CN118908391A - Heavy metal wastewater treatment device - Google Patents

Abstract

The invention discloses a heavy metal wastewater treatment device, which comprises: a case; the first filter screen is horizontally arranged in the box body; the water adding mechanism comprises a first vertical pipe, a second vertical pipe and a water adding transverse pipe; the feeding pipe is provided with a plurality of elastic pressing blocks, a feeding opening and a sealing plug. The heavy metal wastewater treatment device provided by the invention can realize the addition of wastewater and treatment reagents, and the wastewater and the treatment reagents are uniformly sprayed, so that the mixing uniformity of the wastewater and the treatment reagents is improved, the degradation rate of organic matters in the wastewater is improved, and the wastewater treatment efficiency is further improved.

Description

Heavy metal wastewater treatment device

Technical Field

The present invention relates to the technical field of wastewater treatment equipment, and more specifically, to a heavy metal wastewater treatment device.

Background Art

The rare earth processing industry includes a series of processing production chains, including mineral processing, separation, smelting and processing. The smelting process will produce a large amount of heavy metal wastewater. If these heavy metal wastewaters are directly discharged into the environment, the difficult-to-degrade organic matter will exist in the environment for a long time, which is bound to cause great harm to human health and ecological cases. Therefore, it is necessary to treat and purify the wastewater generated in the rare earth smelting process so that it can meet the emission standards before being discharged into the environment.

During the treatment of heavy metal wastewater, treatment reagents are added to the wastewater, which can react with the difficult-to-degrade organic matter in the wastewater to change the biodegradability, solubility and coagulation and sedimentation properties of the organic matter. In the existing process of treating heavy metal wastewater with reagents, local addition of reagents to the heavy metal wastewater to be treated can easily cause excessive concentration of local reagents, thereby leading to local high reaction, while the edge reaction far away from the addition area is weaker. In order to increase the completion rate of the reaction of organic matter in the wastewater, excessive reagents are usually added, resulting in reagent waste and low reagent utilization. Excessive reagents can also cause secondary pollution. In addition, in the treatment process of the prior art, the stirring dimension is single, resulting in uneven mixing of the reagents and heavy metal wastewater, further reducing the reagent utilization rate.

Summary of the invention

An object of the present invention is to solve at least the above problems and to provide at least the advantages which will be described hereinafter.

In order to achieve these purposes and other advantages according to the present invention, a heavy metal wastewater treatment device is provided, comprising:

The box body has a drain port at the bottom;

A first filter screen is horizontally inscribed in the box body, and the first filter screen divides the interior of the box body into a first space and a second space;

A water adding mechanism is provided in the first space, and the water adding mechanism comprises:

A water supply vertical pipe is coaxially arranged with the box body, and comprises a first vertical pipe and a second vertical pipe rotatably connected through a bearing ring, the top of the first vertical pipe extends upward to the top of the box body and is connected to a water supply funnel; the first vertical pipe is connected to the top of the box body through a support member; a water wheel is arranged in the second vertical pipe, and the central axis of the water wheel is connected to the second vertical pipe;

A water supply horizontal pipe, which is arranged horizontally and whose midpoint is located on the axis of the second vertical pipe, and the water supply horizontal pipe is connected to the bottom of the second vertical pipe; a plurality of water supply nozzles are arranged at intervals along the length direction of the bottom of the water supply horizontal pipe; a plurality of protrusions are arranged at the bottom of the water supply horizontal pipe;

A feeding pipe, which is horizontally arranged in the first space and located below the water-adding horizontal pipe, a plurality of elastic pressing blocks corresponding to the plurality of protrusions are arranged on the top of the feeding pipe, and a plurality of feeding ports corresponding to the plurality of elastic protrusions are arranged on the bottom, the distance between each pressing block and the axis of the box body is equal to the distance between the protrusion corresponding to the pressing block and the axis of the box body, each elastic pressing block is sealed and slidably arranged on the top of the feeding pipe in the vertical direction, each feeding port is correspondingly provided with a sealing plug, and each sealing plug is connected to the corresponding elastic pressing block;

The protrusions, elastic pressure blocks and corresponding sealing plugs are configured as follows: in a natural state, the top of each pressure block is higher than the bottom of the corresponding protrusion, and the sealing plug blocks the corresponding feeding port; during the rotation of the water adding horizontal pipe, each protrusion is driven to rotate, and during the rotation stroke, the protrusion presses the corresponding elastic protrusion downward, thereby driving the corresponding sealing plug to move downward and open the corresponding feeding port.

Preferably, the heavy metal wastewater treatment device further comprises a stirring mechanism disposed in the second space, comprising:

A sleeve is coaxially disposed in the second space, and two ends of the sleeve are rotatably connected to the bottom of the first filter screen and the bottom surface of the box body respectively;

A plurality of pairs of stirring components are arranged at intervals along the vertical direction on the circumferential side wall of the sleeve, and each pair of stirring components are symmetrically arranged on both sides of the sleeve along the axis of the box body. Each stirring component includes a stirring rod arranged radially along the sleeve and a plurality of stirring blades arranged on the stirring rod, and one end of each stirring rod is rotatably connected to the circumferential side wall of the sleeve.

Preferably, in the heavy metal wastewater treatment device, the stirring mechanism further comprises:

A fixed rod is coaxially arranged in the sleeve, and the bottom is fixedly connected to the bottom surface of the box body; one end of the stirring rod corresponding to the pair of stirring assemblies located at the uppermost part passes through the circumferential side wall of the sleeve and extends into the annular space formed by the sleeve and the fixed rod;

A first bevel gear, which is coaxially fixedly sleeved on the fixing rod;

Two second bevel gears are coaxially fixedly sleeved on one end of the pair of stirring rods at the top, and each second bevel gear is meshed with the first bevel gear;

A plurality of gear plates are provided, and a coaxial fixed sleeve is provided with a gear plate on the other end of each stirring rod, and two gear plates adjacent to each other are meshed with each other.

Preferably, in the heavy metal wastewater treatment device, a threaded section is provided on the circumferential side surface of the fixing rod;

The heavy metal wastewater treatment device further comprises a heating mechanism disposed in the annular space formed by the sleeve and the fixing rod, which comprises:

A rotating sleeve is arranged on the fixed rod, and one end of the two stirring rods at the uppermost part is rotatably connected to the rotating sleeve;

A threaded sleeve, whose thread is rotatably arranged on the threaded section of the fixed rod, and the threaded sleeve is connected to the rotating sleeve via a vertically arranged telescopic rod;

The electric heating block is fixed on the threaded sleeve.

Preferably, in the heavy metal wastewater treatment device, the lower end of the sleeve extends vertically downward to the bottom of the box, and the sleeve is rotatably connected to the bottom surface of the box through a sealed bearing;

The stirring mechanism also includes a motor, which is arranged on the side wall of the box body. The output shaft of the motor extends vertically downward and is transmission-connected to the lower end of the sleeve through a transmission belt.

Preferably, in the heavy metal wastewater treatment device, the support member comprises:

A support plate, which is horizontally arranged above the box body, wherein the middle portion of the support plate is arranged at a through hole for the second vertical pipe to pass through, and the inner wall of the through hole is rotatably connected to the side wall of the second vertical pipe through a bearing ring;

A support rod, one end of which is fixedly connected to the top of the support plate, and the other end of which is fixedly connected to the side wall of the first vertical pipe.

Preferably, in the heavy metal wastewater treatment device, the support member further comprises a vertically telescopic lifting mechanism, which is arranged between the support plate and the top surface of the box body;

The lifting mechanism comprises a pair of hydraulic cylinders symmetrically arranged along the axis of the box body, the body of each hydraulic cylinder is fixed on the top surface of the box body, and the piston rod extends vertically upward and is connected to the bottom surface of the support plate.

The present invention has at least the following beneficial effects:

1. The heavy metal wastewater treatment device provided by the present invention can realize adding wastewater and treatment reagents at the same time, and the wastewater and treatment reagents are evenly sprayed, which improves the mixing uniformity of the wastewater and the treatment reagents, improves the degradation rate of organic matter in the wastewater, and thus improves the wastewater treatment efficiency;

2. The present invention further provides a stirring mechanism in the second space, which can stir the mixture of heavy metal wastewater and treatment reagent in multiple dimensions, thereby improving the reaction efficiency and further improving the degradation rate of organic matter in the heavy metal wastewater, thereby achieving the purpose of improving the treatment efficiency;

3. The present invention links the rotation of the sleeve with the rotation of the multiple stirring rods by setting a gear assembly, so that the rotation of the sleeve can synchronously drive the rotation of the multiple stirring rods, reducing the setting of the driving source and achieving the effect of saving energy.

Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the heavy metal wastewater treatment device of the present invention in a state where the feed port is open;

FIG2 is a partial enlarged view of A in FIG1 of the present invention;

FIG3 is a schematic structural diagram of the heavy metal wastewater treatment device of the present invention in a state where the feed port is closed;

FIG. 4 is a partial enlarged view of B in FIG. 3 of the present invention.

Explanation of the reference numerals: 1-housing; 2-first filter screen; 31-first vertical pipe; 32-second vertical pipe; 33-water adding funnel; 34-water wheel; 351-support plate; 352-support rod; 353-lifting mechanism; 36-water adding horizontal pipe; 361-nozzle; 362-bump; 4-feeding pipe; 41-elastic pressure block; 42-feeding port; 43-sealing plug; 51-sleeve; 52-stirring rod; 521-stirring blade; 53-fixed rod; 54-first bevel gear; 55-second bevel gear; 56-gear plate; 61-rotating sleeve; 62-threaded sleeve; 63-telescopic rod; 64-electric heating block; 71-motor; 72-belt.

DETAILED DESCRIPTION

The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

It should be understood that the terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or more other elements or combinations thereof.

It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified.

In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

As shown in Figures 1 to 4, the present invention provides a heavy metal wastewater treatment device, which includes:

The box body 1 has a drain port at the bottom;

A first filter screen 2, which is horizontally connected to the box body 1, and the first filter screen 2 divides the interior of the box body 1 into a first space and a second space;

A water adding mechanism is provided in the first space, and the water adding mechanism comprises:

A water supply vertical pipe is coaxially arranged with the box body 1, and comprises a first vertical pipe 31 and a second vertical pipe 32 rotatably connected through a bearing ring, the top of the first vertical pipe 31 extends upward to the top of the box body 1 and is connected to a water supply funnel 33; the first vertical pipe 31 is connected to the top of the box body 1 through a support; a water wheel 34 is arranged in the second vertical pipe 32, and the central axis thereof is connected to the second vertical pipe 32;

A water supply transverse pipe 36 is horizontally arranged with its midpoint located on the axis of the second vertical pipe 32, and the water supply transverse pipe 36 is connected to the bottom of the second vertical pipe 32; a plurality of water supply nozzles 361 are arranged at intervals along the length direction of the bottom of the water supply transverse pipe 36; a plurality of protrusions 362 are arranged at the bottom of the water supply transverse pipe 36;

A feeding pipe 4 is horizontally arranged in the first space and below the water-adding horizontal pipe 36. A plurality of elastic pressing blocks 41 corresponding to the plurality of protrusions 362 are arranged on the top of the feeding pipe 4. A plurality of feeding ports 42 corresponding to the plurality of elastic protrusions 362 are arranged on the bottom. The distance between each elastic pressing block 41 and the axis of the box body 1 is equal to the distance between the protrusion 362 corresponding to the elastic pressing block 41 and the axis of the box body 1. Each elastic pressing block 41 is sealed and slidably arranged on the top of the feeding pipe 4 in the vertical direction. A sealing plug 43 is correspondingly arranged on each feeding port 42. Each sealing plug 43 is a conical structure with the tip facing upward. Each sealing plug 43 is connected to the corresponding elastic pressing block 41. One end of the feeding pipe 4 is connected to the feeding port arranged on the side wall of the box body 1.

The protrusion 362, the elastic pressure block 41 and the corresponding sealing plug 43 are configured as follows: in a natural state, the top of each pressure block is higher than the bottom of the corresponding protrusion 362, and the sealing plug 43 blocks the corresponding feeding port 42; during the rotation of the water adding horizontal pipe 36, each protrusion 362 is driven to rotate, and during the rotation stroke, the protrusion 362 presses the corresponding elastic protrusion 362 downward, thereby driving the corresponding sealing plug 43 to move downward, opening the corresponding feeding port 42.

In the above technical scheme, the present invention provides a heavy metal wastewater treatment device, which can be used to treat heavy metal wastewater generated in the rare earth smelting process. Specifically, through this device, a treatment reagent, such as Fenton reagent, can be added to the heavy metal wastewater, which can partially oxidize, couple or oxidize the difficult-to-degrade organic matter in the heavy metal wastewater, and convert the organic matter into an intermediate product with a relatively small molecular weight, thereby changing the biodegradability, solubility and concrete precipitation of the difficult-to-degrade organic matter, and subsequently using biochemical methods, coagulation precipitation methods and other processes to remove it, and finally achieve purification of the heavy metal wastewater.

The present invention provides a heavy metal wastewater treatment device, which includes a box body 1 with a hollow cylindrical structure, a drain port is provided at the bottom, and a second filter screen is connected to the drain port to separate solids generated during the reagent treatment process. The water treated with the reagent can be discharged through the drain port and transported to the next process equipment (such as biochemical reaction equipment, sedimentation tank, etc.). The heavy metal wastewater to be treated is injected into the box body 1 through a water adding mechanism, and a treatment reagent is added into the box body 1 through a feeding pipe 4 (the treatment reagent used in the present invention is a liquid reagent, and if it is a solid treatment agent, it can also be added to the solid treatment agent). The first filter screen 2 is configured to mix the liquid and add it into the box body 1 through the feeding pipe 4), and a first filter screen 2 is arranged inside the box body 1 to perform preliminary filtration on the heavy metal wastewater, and remove the fixed impurities in the heavy metal wastewater before the wastewater is mixed with the treatment reagent, so as to avoid the solid impurities affecting the reaction between the reagent and the organic matter in the heavy metal wastewater; the first filter screen 2 divides the interior of the box body 1 into a first space and a second space (as a preferred embodiment, the first filter screen 2 can be arranged as an upwardly convex curved surface, which can not only improve the impact resistance of the heavy metal wastewater, but also use the water flow to flush the impurities along the curved surface, so that the impurities can fall into the box body 1 autonomously). The water adding mechanism includes a first vertical pipe 31 and a second vertical pipe 32 which are connected and communicated by a bearing ring. The upper end of the first vertical pipe 31 extends vertically upward through the box body 1 and is connected with a water adding funnel 33. The first vertical pipe 31 is connected to the top of the box body 1 through a support member to limit the circumferential rotation of the first vertical pipe 31. A water wheel 34 is provided in the second vertical pipe 32. When water flows through the second vertical pipe 32, the water wheel 34 rotates to drive the second vertical pipe 32 to rotate around its own axis. Under the limiting effect, the first vertical pipe 31 does not rotate, and a horizontally arranged water-adding transverse pipe 36 is connected at the bottom of the second vertical pipe 32, the two ends of which are closed and a plurality of water-adding nozzles 361 are arranged at the bottom. The water-adding transverse pipe 36 and the water-adding nozzles 361 rotate under the rotation of the second vertical pipe 32 to realize uniform spraying of heavy metal wastewater onto the first filter screen 2, thereby improving the primary filtration efficiency; further, a feeding pipe 4 is horizontally arranged between the first filter screen 2 and the water-adding transverse pipe 36, the two ends of the feeding pipe 4 are sealed and connected to the inner wall of the box body 1, and one end of the feeding pipe 4 is connected to the feeding port arranged on the side wall of the box body 1. The treatment reagent is added into the feeding pipe 4 through the feeding port. Specifically, one end of the feeding pipe 4 can be connected to the outside through a feeding pipe. One end of the feeding pipe is connected to one end of the feeding pipe 4, and the other end extends to the outside of the box body 1 through the side wall of the box body 1. The treatment reagent is injected into the feeding pipe, and then added to the feeding pipe 4; a plurality of elastic pressing blocks 41 are arranged on the top of the feeding pipe 4 in an extended length direction, and each pressing block is sealed and slidably arranged on the top of the feeding pipe 4 in a vertical direction, that is, the upper end of the pressing block is located above the feeding pipe 4, and the lower part passes through the feeding pipe 4 and extends vertically to the feeding pipe 4. The contact part between the pressing block and the side wall of the feeding tube 4 is always sealed to prevent leakage; the pressing block is connected to the inner wall of the feeding tube 4 through a vertically retractable elastic member, and the number of the pressing blocks is consistent with the number of the protrusions 362 at the bottom of the water-adding transverse tube 36, and the corresponding pressing blocks and protrusions 362 are at the same distance from the axis of the box body 1 (so that when the water-adding transverse tube 36 rotates around the axis of the box body 1 until the axis of the water-adding transverse tube 36 and the axis of the feeding tube 4 are in the same vertical plane, the corresponding protrusion 362 is located directly above the pressing block, so that the protrusion 362 can squeeze and push the pressing block downward. As a preferred embodiment of the present invention, the protrusion 362 can be The bottom of the block 362 is set as a smooth curved surface, and the top of the pressing block is set as a conical structure with the top facing upward, so as to reduce the resistance of the protrusion 362 to the pressing block pushing downward through the pressing block during the rotation process, and ensure that the protrusion 362 can produce a downward extrusion thrust on the pressing block as the water adding cross pipe 36 rotates, thereby opening the feeding port 42 at the bottom of the feeding pipe 4, and adding wastewater and treatment reagents at the same time). A row of feeding ports 42 are provided in the extended length direction of the bottom of the feeding pipe 4, and a feeding port 42 is correspondingly provided directly below each elastic pressing block 41, and a sealing plug 43 is correspondingly provided in the feeding port 42, which It is a conical structure with the tip facing upward. Each sealing plug 43 is connected to the corresponding elastic pressing block 41, so that the up and down movement of the elastic pressing block 41 can drive the up and down movement of the sealing plug 43, thereby opening the feeding port 42, and the opening size of the feeding port 42 can be adjusted to achieve the addition of treatment reagents while adding heavy metal wastewater, greatly improving the uniformity of mixing heavy metal wastewater and treatment reagents, avoiding local addition of treatment reagents resulting in excessive concentration of local reagents, thereby causing local high reaction, while other parts have low reaction rates due to insufficient reagents, resulting in low organic matter degradation rate;

Specifically: before adding heavy metal wastewater into the box 1, the water adding horizontal pipe 36 and the feeding pipe 4 are located on different vertical planes, any protrusion 362 and the corresponding pressing block do not contact each other, the elastic pressing block 41 is in a natural state, and the blocking block blocks the corresponding feeding port 42;

The heavy metal wastewater to be treated enters the first vertical pipe 31 through the water adding funnel 33, and then enters the second vertical pipe 32 and the water adding transverse pipe 36, and then flows downward to the first filter screen 2 through multiple water adding ports. When the water flows through the second vertical pipe 32, the water flow can drive the water wheel 34 to rotate, and then drive the second vertical pipe 32 and the water adding transverse pipe 36 to rotate around the axis of the box body 1, so as to realize rotary water adding, so that the heavy metal wastewater can be evenly sprayed on the first filter screen 2, thereby improving the initial filtration efficiency and avoiding the accumulation of impurities in the same position to cause the filter mesh to be blocked; further, a feeding pipe 4 is horizontally arranged between the first filter screen 2 and the water adding transverse pipe 36. During the addition of heavy metal wastewater, the water adding transverse pipe 36 rotates in a circle around the axis of the box body 1 relative to the feeding pipe 4. When the water adding transverse pipe 36 rotates to be on the same plane as the feeding pipe 4, the convex The block 362 will generate a downward squeezing force on the corresponding elastic pressure block 41. The downward movement of the elastic pressure block 41 drives the corresponding sealing plug 43 to move downward, thereby opening the feeding port 42, and the treatment reagent in the feeding pipe 4 flows downward through the opened feeding port 42 to mix with the heavy metal wastewater; the water adding transverse pipe 36 continues to rotate, and when the protrusion 362 rotates to a position where it does not interfere with the corresponding pressure block, the elastic pressure block 41 moves upward and resets under the action of the elastic force, driving the sealing plug 43 to reset. For each rotation of the water adding transverse pipe 36, multiple feeding ports 42 are opened once; in one treatment cycle, the amount of water added to the heavy metal wastewater is controlled so that the liquid level of the heavy metal wastewater in the box 1 is not higher than the first filter screen 2. After stopping the water addition, react for a period of time, open the drain port to discharge the water in the box 1, and transport it to the next treatment section.

The heavy metal wastewater treatment device provided by the present invention can realize adding wastewater and treatment reagent at the same time, and both the wastewater and the treatment reagent are sprayed evenly, thereby improving the mixing uniformity of the wastewater and the treatment reagent, improving the degradation rate of organic matter in the wastewater, and thus achieving improved wastewater treatment efficiency.

In another technical solution, the heavy metal wastewater treatment device further includes a stirring mechanism disposed in the second space, which includes:

A sleeve 51 is coaxially disposed in the second space, and two ends of the sleeve 51 are rotatably connected to the bottom of the first filter screen 2 and the bottom surface of the box body 1 respectively;

A plurality of pairs of stirring assemblies are arranged at intervals along the vertical direction on the circumferential side wall of the sleeve 51, and each pair of stirring assemblies are symmetrically arranged on both sides of the sleeve 51 along the axis of the housing 1. Each stirring assembly includes a stirring rod 52 arranged radially along the sleeve 51 and a plurality of stirring blades 521 arranged on the stirring rod 52. One end of each stirring rod 52 is rotatably connected to the circumferential side wall of the sleeve 51.

The present invention further arranges a stirring mechanism in the second space, which can stir the mixture of heavy metal wastewater and treatment reagent in multiple dimensions and in large scale, thereby improving the reaction efficiency and further improving the degradation rate of organic matter in the heavy metal wastewater, thereby achieving the purpose of improving the treatment efficiency.

The specific stirring mechanism includes a sleeve 51 that is coaxially rotatably arranged in the second space, the upper end of which is rotatably connected to the bottom of the first filter 2, and the lower end is rotatably connected to the bottom surface of the box body 1. The sleeve 51 can rotate around its own axis. The two ends of the sleeve 51 are closed. A plurality of pairs of stirring components are arranged on the sleeve 51 at intervals along the vertical direction. Each pair of stirring components is symmetrically arranged on both sides of the sleeve 51 along the axis of the box body 1. Each stirring component includes a stirring rod 52, one end of which is rotatably connected to the side wall of the sleeve 51 and the other end of which extends horizontally along the radial direction of the sleeve 51, and a plurality of stirring blades 521 are arranged on the stirring rod 52 at intervals. The stirring blades 521 of any two vertically adjacent stirring components do not interfere with each other. Each stirring rod 52 can rotate around its own axis relative to the sleeve 51, that is, each stirring component can rotate around the axis of the box body 1 with the sleeve 51. At the same time, the stirring component can rotate around the axis of its own stirring rod 52, thereby realizing multi-dimensional stirring, so that the treatment reagent can fully contact with the organic matter in the heavy metal wastewater, thereby further improving the treatment efficiency.

In another technical solution, the heavy metal wastewater treatment device, the stirring mechanism further comprises:

A fixed rod 53 is coaxially disposed in the sleeve 51, and the bottom is fixedly connected to the bottom surface of the box body 1; one end of the stirring rod 52 corresponding to the pair of stirring assemblies at the top passes through the circumferential side wall of the sleeve 51 and extends into the annular space formed by the sleeve 51 and the fixed rod 53;

A first bevel gear 54, which is coaxially fixedly sleeved on the fixing rod 53;

Two second bevel gears 55 are coaxially fixedly sleeved on one end of the pair of stirring rods 52 at the top, and each second bevel gear 55 is meshed with the first bevel gear 54;

A plurality of gear plates 56 are provided. A gear plate 56 is coaxially fixedly sleeved on the other end of each stirring rod 52. Two gear plates 56 adjacent to each other are meshed with each other.

In the above technical scheme, the present invention links the rotation of the sleeve 51 with the rotation of the multiple stirring rods 52 by setting a gear assembly, so that the rotation of the sleeve 51 can synchronously drive the rotation of the multiple stirring rods 52, reduce the setting of the driving source, and achieve the effect of saving energy; specifically, a fixed rod 53 is coaxially fixedly arranged inside the sleeve 51, and the two ends of the fixed rod 53 are fixedly connected to the first filter screen 2 and the bottom surface of the box body 1, and a first bevel gear 54 is coaxially fixedly sleeved on the fixed rod 53, and an annular space is formed between the fixed rod 53 and the sleeve 51, and one end of the uppermost pair of stirring rods 52 is horizontally extended inward into the annular space, and a second bevel gear 55 is fixedly sleeved on one end of the pair of stirring rods 52, and each second bevel gear 55 is meshed with the first bevel gear 54. A gear plate 56 is fixedly mounted on the other end of each stirring rod 52. Any two adjacent gear plates 56 in the vertical direction are meshed, so that all the stirring rods 52 are transmitted through the gear plate 56. During the rotation of the sleeve 51 around its own axis, the stirring rod 52 is driven to rotate around the axis of the box body 1. The stirring rod 52 located at the top can synchronously rotate around its own axis under the meshing action of the first bevel gear 54 and the second bevel gear 55. The stirring rod 52 located at the top rotates around its own axis, and through the transmission of the gear plate 56, it can drive multiple stirring rods 52 located below it to rotate around themselves, and the rotation directions of any two adjacent stirring rods 52 are opposite, so that the liquid in the box body 1 can be stirred significantly and without dead angles, creating turbulence, thereby further improving the processing efficiency.

In another technical solution, in the heavy metal wastewater treatment device, a threaded section is provided on the circumferential side surface of the fixing rod 53;

The heavy metal wastewater treatment device further includes a heating mechanism disposed in the annular space formed by the sleeve 51 and the fixing rod 53, which includes:

The rotating sleeve 61 is disposed on the fixed rod 53, and one end of the two stirring rods 52 at the top is rotatably connected to the rotating sleeve 61;

A threaded sleeve 62, whose thread is rotatably arranged on the threaded section of the fixed rod 53, and the threaded sleeve 62 is connected to the rotating sleeve 61 through a vertically arranged telescopic rod 63;

The electric heating block 64 is fixed on the threaded sleeve 62 .

In the process of treating heavy metal wastewater, proper heating of the treatment reagent can accelerate the reaction rate. For example, in the process of treating wastewater, the preferred temperature of Fenton reagent is 60°C, which cannot be too high or too low. The existing heating tubes are mostly fixed, and heating at a local position will cause the local temperature to be too high, affecting the degradation efficiency. In order to solve the above technical problems, in the above technical scheme, the present invention further provides a heating mechanism, which can properly heat the liquid in the box 1. Specifically, a rotating sleeve 61 and a threaded section are respectively provided on the fixed rod 53 from top to bottom, and the rotating sleeve 61 is connected to the fixed rod through a bearing member. 53 is rotatably connected, a threaded rotating sleeve 61 is provided with a threaded sleeve 62 on the threaded section, the threaded sleeve 62 is connected to the rotating sleeve 61 through a telescopic rod 63, and an electric heating block 64 is provided on the threaded sleeve 62. When the multiple stirring rods 52 rotate around the axis of the box body 1, the rotating sleeve 61 will be driven to rotate around the axis of the fixed rod 53, thereby driving the threaded sleeve 62 to rotate around the axis of the fixed rod 53. Since the threaded sleeve 62 is rotatably connected with the threaded section, the threaded sleeve 62 will move in the vertical direction while rotating around the axis of the fixed rod 53, thereby driving the electric heating block 64 to move up and down, thereby evenly heating the liquid in the box body 1. Preferably, the sleeve 51 is made of a heat-conducting material.

In another technical solution, in the heavy metal wastewater treatment device, the lower end of the sleeve 51 extends vertically downward to the bottom of the box body 1, and the sleeve 51 is rotatably connected to the bottom surface of the box body 1 through a sealed bearing;

The stirring mechanism further comprises a motor 71, which is arranged on the side wall of the box body 1, and the output shaft of the motor 71 extends vertically downward and is connected to the lower end of the sleeve 51 through a transmission belt 72. The motor 71 is preferably a servo motor 71 that can cycle forward and reverse.

In the above technical solution, the motor 71 arranged on the side wall of the box body 1 is used as a power source, and the click output shaft is connected to the lower end of the sleeve 51 through the belt 72, driving the sleeve 51 to rotate in the box body 1.

In another technical solution, the heavy metal wastewater treatment device, the support member comprises:

A support plate 351 is horizontally disposed above the box body 1, and a middle portion of the support plate 351 is disposed at a through hole for the second vertical pipe 32 to pass through, and an inner wall of the through hole is rotatably connected to a side wall of the second vertical pipe 32 via a bearing ring;

The support rod 352 has one end fixedly connected to the top of the support plate 351 , and the other end fixedly connected to the side wall of the first vertical pipe 31 .

A support member consisting of a support plate 351 and a support rod 352 is provided to stably support and install the first vertical pipe 31 and the top of the box body 1. Preferably, a plurality of support rods 352 can be provided along the circumferential direction to improve the stability of the support for the first vertical pipe 31 and the water adding funnel 33.

In another technical solution, in the heavy metal wastewater treatment device, the support member also includes a vertically telescopic lifting mechanism 353, which is arranged between the support plate 351 and the top surface of the box body 1; the lifting mechanism 353 includes a pair of hydraulic cylinders symmetrically arranged along the axis of the box body 1, and the body of each hydraulic cylinder is fixed on the top surface of the box body 1, and the piston rod extends vertically upward and is connected to the bottom surface of the support plate 351.

A lifting mechanism 353 is set on the top of the support member, which can adjust the height of the water adding mechanism, and then adjust the distance between the water adding transverse pipe 36 and the feeding pipe 4. When there is no need to add treatment reagent to the box body 1 (when the amount of treatment reagent added is sufficient, or after the heavy metal wastewater is added, the water adding transverse pipe 36 is close to the position on the same plane as the feeding pipe 4), the water adding mechanism can be lifted up by the lifting mechanism 353, and the water adding transverse pipe 36 can be driven to move upward to a position where it does not interfere with the feeding pipe 4. The water adding transverse pipe 36 continues to rotate, or remains in the state of being on the same plane as the feeding pipe 4 after water adding is completed, and will not generate downward squeezing force on the elastic pressure block 41, and will not open the feeding port 42 to continue unnecessary feeding operations.

The lifting mechanism 353 can also be set to adjust the amount of treatment reagent added while adding water. The closer the water-adding transverse pipe 36 is to the feeding pipe 4, the greater the stroke of the protrusion 362 pressing the elastic pressure block 41 downward, the larger the feeding port 42 is opened, and the more treatment reagent is added for each rotation of the water-adding transverse pipe 36. For example, when the concentration of organic matter in the heavy metal wastewater is relatively high, the water-adding transverse pipe 36 can be moved downward to a position closer to the feeding pipe 4 by the lifting mechanism 353. Conversely, if the concentration of organic matter in the heavy metal wastewater is relatively low, the water-adding transverse pipe 36 can be lifted upward to a position farther away from the feeding pipe 4 by the lifting mechanism 353, thereby increasing the distance between the water-adding transverse pipe 36 and the feeding pipe 4. At this time, for each rotation, the protrusion 362 acts on the pressure block to drive the pressure block to move downward. The feeding port 42 is opened less, and less treatment reagent is added.

The number of devices and processing scales described here are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be obvious to those skilled in the art.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims (7)

1. Heavy metal wastewater treatment device, its characterized in that includes:

The bottom of the box body is provided with a liquid outlet;

the first filter screen is horizontally connected in the box body in an inscribing way, and divides the interior of the box body into a first space and a second space;

the mechanism adds water, it locates in the first space, add water mechanism includes:

The water adding vertical pipe is coaxially arranged with the box body, the water adding vertical pipe comprises a first vertical pipe and a second vertical pipe which are rotationally connected through a bearing ring, and the top of the first vertical pipe extends upwards to the upper part of the box body and is communicated with a water adding funnel; the first vertical pipe is connected with the top of the box body through a supporting piece; a water wheel is arranged in the second vertical pipe, and the central shaft of the water wheel is connected with the second vertical pipe;

The water adding transverse pipe is horizontally arranged, the middle point of the water adding transverse pipe is positioned on the axis of the second vertical pipe, and the water adding transverse pipe is communicated with the bottom of the second vertical pipe; the bottom of the water adding transverse pipe is provided with a plurality of water adding spray heads at intervals along the length direction of the water adding transverse pipe; the bottom of the water adding transverse pipe is provided with a plurality of convex blocks;

The feeding pipe is horizontally arranged in the first space and positioned below the water adding transverse pipe, a plurality of elastic pressing blocks which are in one-to-one correspondence with the plurality of convex blocks are arranged at the top of the feeding pipe, a plurality of feeding holes which are in one-to-one correspondence with the plurality of elastic convex blocks are arranged at the bottom of the feeding pipe, the distance between each pressing block and the axis of the box body is equal to the distance between the convex block corresponding to the pressing block and the axis of the box body, each elastic pressing block is arranged at the top of the feeding pipe in a sealing sliding manner along the vertical direction, each feeding hole is correspondingly provided with a sealing plug, and each sealing plug is connected with the corresponding elastic pressing block;

The lug, the elastic pressing block and the corresponding plugging plug are arranged as follows: in a natural state, the top of each pressing block is higher than the bottom of the corresponding convex block, and the corresponding charging hole is plugged by the plugging plug; in the process of rotating the water adding transverse pipe, each lug is driven to rotate, and in the rotating stroke, the corresponding elastic lug is pressed downwards by the lug, so that the corresponding plugging plug is driven to move downwards, and the corresponding charging hole is opened.

2. The heavy metal wastewater treatment apparatus as recited in claim 1, further comprising a stirring mechanism provided in the second space, comprising:

the sleeve is coaxially arranged in the second space, and two ends of the sleeve are respectively and rotatably connected with the bottom of the first filter screen and the bottom surface of the box body;

The stirring assembly comprises stirring rods radially arranged along the sleeve and a plurality of stirring blades arranged on the stirring rods, and one end of each stirring rod is rotationally connected with the circumferential side wall of the sleeve.

3. The heavy metal wastewater treatment apparatus according to claim 2, wherein the stirring mechanism further comprises:

The fixed rod is coaxially arranged in the sleeve, and the bottom of the fixed rod is fixedly connected with the bottom surface of the box body; one end of the stirring rod corresponding to the uppermost pair of stirring assemblies penetrates through the circumferential side wall of the sleeve and extends into an annular space formed by the sleeve and the fixing rod;

the first bevel gear is coaxially and fixedly sleeved on the fixed rod;

two second bevel gears which are coaxially and fixedly sleeved on one end of the uppermost pair of stirring rods respectively, and each second bevel gear is meshed with the first bevel gear;

And a plurality of gear plates are coaxially and fixedly sleeved on the other end of each stirring rod, and two gear plates which are adjacent up and down are meshed with each other.

4. The heavy metal wastewater treatment device according to claim 3, wherein the circumferential side surface of the fixing rod is provided with a thread section;

The heavy metal wastewater treatment device also comprises an annular space internal heating mechanism formed by the sleeve and the fixing rod, and the heavy metal wastewater treatment device comprises:

The rotating sleeve is rotationally sleeved on the fixed rods, and one end of the two stirring rods positioned at the uppermost part is rotationally connected with the rotating sleeve;

the thread sleeve is rotationally arranged on the thread section of the fixed rod through threads, and is connected with the rotating sleeve through a vertically arranged telescopic rod;

And the electric heating block is fixedly arranged on the thread sleeve.

5. The heavy metal wastewater treatment device according to claim 4, wherein the lower end of the sleeve extends vertically downwards to the lower part of the box body, and the sleeve is rotatably connected with the bottom surface of the box body through a sealing bearing;

the stirring mechanism further comprises a motor which is arranged on the side wall of the box body, and an output shaft of the motor vertically extends downwards and is in transmission connection with the lower end of the sleeve through a transmission belt.

6. The heavy metal wastewater treatment apparatus of claim 5, wherein the support member comprises:

The supporting plate is horizontally arranged above the box body, the middle part of the supporting plate is arranged in a through hole for the second vertical pipe to pass through, and the inner wall of the through hole is rotationally connected with the side wall of the second vertical pipe through a bearing ring;

one end of the supporting rod is fixedly connected with the top of the supporting plate, and the other end of the supporting rod is fixedly connected with the side wall of the first vertical pipe.

7. The heavy metal wastewater treatment apparatus of claim 6, wherein the support member further comprises a vertically telescopic lifting mechanism provided between the support plate and the top surface of the tank body;

the lifting mechanism comprises a pair of hydraulic cylinders symmetrically arranged along the axis of the box body, the body of each hydraulic cylinder is fixedly arranged on the top surface of the box body, and the piston rod vertically extends upwards and is connected with the bottom surface of the supporting plate.