CN118559873A - Pneumatic mixing device for modified concrete - Google Patents

Abstract

The present invention provides a pneumatic mixing device for modified concrete, wherein a powder catcher is installed in a material barrel, a conveying pipeline and an air outlet pipe are respectively arranged on the material barrel, a plurality of feed augers are arranged on the conveying pipeline, and the plurality of feed augers are independently arranged, each feed augers is used to quantitatively push a powder material into the conveying pipeline, the conveying pipeline is filled with compressed air, and the compressed air is used to blow and mix a plurality of powder materials and then blow them into the material barrel, a material collecting hopper is arranged at the lower end of the material barrel, the powder catcher is used to capture the powder in the material barrel and settle it in the material collecting hopper, the material collecting hopper is connected to the discharging augers, and the discharging augers are used to export the powder material in the material collecting hopper, and the compressed air in the material barrel is exported through the air outlet pipe. The pneumatic mixing device for modified concrete described in the present invention can process the pre-mixing of modified concrete powder continuously on-line, has high mixing efficiency, and controllable mixing quality.

Description

Pneumatic mixing device for modified concrete

Technical Field

The invention belongs to the field of concrete mixing, and in particular relates to a pneumatic mixing device for modified concrete.

Background Art

Ordinary concrete refers to cement as a gel material, sand and gravel as aggregates, which is mixed with water, cast into shape, and solidified into an "artificial stone" with a certain strength. It is one of the most important materials in the field of civil engineering. In order to improve the setting efficiency of concrete or meet the needs of special working conditions, it is necessary to add modified materials to the concrete in the prior art, such as graphene, expansion agent, rubber powder, gypsum or water-soluble gel and other additives to form modified concrete. When in use, it is necessary to add the required additives to the cement mortar according to the proportion of the ratio, which reduces the production efficiency and increases the labor intensity. This deficiency can be compensated by premixing the cement and the additives to be added. When the powder is premixed, it is stirred by traditional stirring blades, which is less efficient.

Summary of the invention

In view of this, the present invention aims to propose a pneumatic mixing device for modified concrete to solve the problem that the addition of a single material during the mixing of the modified concrete in the prior art reduces the production efficiency and requires premixing of the modified concrete, while the powder premixing mixing efficiency of the prior art is low.

To achieve the above object, the technical solution of the present invention is achieved as follows:

A pneumatic mixing device for modified concrete comprises a material barrel, a conveying pipeline, a feeding auger, a discharging auger and a powder catcher, wherein the powder catcher is installed in the material barrel, and the material barrel is respectively provided with a conveying pipeline and an air outlet pipe, and a plurality of feeding augers are arranged on the conveying pipeline, and the plurality of feeding augers are independently provided, and each feeding auger is used for quantitatively pushing a powder material into the conveying pipeline, and the conveying pipeline is filled with compressed air, and the compressed air is used for blowing and mixing a plurality of powder materials and then blowing them into the material barrel, and a material collecting hopper is provided at the lower end of the material barrel, and the powder catcher is used for capturing the powder in the material barrel and settling it into the material collecting hopper, and the material collecting hopper is connected with the discharging auger, and the discharging auger is used for leading out the powder material in the material collecting hopper, and the compressed air in the material barrel is led out through the air outlet pipe.

Furthermore, the powder catcher includes a support frame, and the two ends of the support frame are respectively fixedly connected to the material barrel, the inner circle of the support frame is a capture space, a capture net is arranged on the periphery of the support frame, and the two ends of the capture space are respectively connected to the conveying pipeline and the material collection bucket, and the compressed air can blow the mixed powder material to the inner circle of the support frame, and the mixed powder material falls into the material collection bucket through the capture space, and the compressed air passes through the capture net and is discharged from the material barrel through the air outlet pipe;

Furthermore, the mesh number of the capture net is not less than 300 meshes.

Furthermore, a plurality of powder catchers are arranged in parallel with each other in the material barrel, a switch plate is arranged corresponding to each powder catcher, a partition plate is arranged in the material barrel, a feeding hole is arranged on the partition plate, each feeding hole corresponds to a powder catcher, and the upper end of the powder catcher is fixedly connected to the lower end of the partition plate, a switch plate is slidably arranged on the upper end of the partition plate, and the sliding switch plate is used for opening and closing the feeding hole.

Furthermore, a sliding shaft is provided on one side of the switch plate, and the periphery of the sliding shaft is slidably connected to the partition plate through a first shaft seat, a screw is provided at one end of the sliding shaft, the periphery of the screw is threadedly connected to a screw sleeve, and one end of the screw sleeve is rotatably sleeved on the partition plate through a second shaft seat, saw teeth are evenly distributed on the periphery of the screw sleeve, and the screw rod is rotatably sleeved on the partition plate, and the periphery of the screw rod is meshed with the saw teeth;

Furthermore, an end cover is arranged at the upper end of the material barrel, the outer periphery of the lead screw is rotatably sleeved onto the end cover, and a hand wheel is arranged at one end of the lead screw, and the hand wheel is located outside the material barrel.

Furthermore, the periphery of the sliding shaft is a polygonal structure, a sliding hole corresponding to the polygonal structure is provided on the first shaft seat, the periphery of the sliding shaft is slidably connected to the sliding hole, and the first shaft seat is fixedly connected to the partition plate.

Furthermore, a lower closing plate is arranged corresponding to each feeding hole on the partition plate, and the feeding hole and the lower closing plate are arranged concentrically, the lower closing plate is a hollow cylindrical structure, and an elastic sealing gasket is arranged between the lower closing plate and the partition plate, the upper end of the lower closing plate is provided with a first wedge-shaped slope, and the lower end of the switch plate is provided with a second wedge-shaped slope, the first wedge-shaped slope and the second wedge-shaped slope are arranged opposite to each other, and the lower end of the switch plate can be attached to the upper end of the lower closing plate.

Furthermore, a pressing plate is arranged on the periphery of the lower closing plate, and the pressing plate does not interfere with the sliding of the switch plate, one end of the pressing plate is fixedly connected to the upper end of the partition plate, and the lower end of the pressing plate can abut against the upper end of the switch plate;

Furthermore, the cross section of the pressed plate is an L-shaped structure.

Furthermore, a plurality of sliding rods are provided at the lower end of the lower closing plate, one end of each sliding rod is fixedly connected to the lower end of the lower closing plate, the other end of the sliding rod passes through the partition plate and a locking cap is installed, a spring is provided around the periphery of the sliding rod, both ends of the spring are respectively fixedly connected to the lower end of the partition plate and the periphery of the locking cap, and the periphery of the sliding rod is threadedly connected to a positioning nut, and the upper end of the positioning nut can abut against the lower end of the partition plate.

Furthermore, the material collecting hopper is a funnel-shaped structure, the lower end of the material collecting hopper is connected to the discharging auger through a material passing pipe, and a first on-off valve is arranged on the material passing pipe.

Furthermore, an exhaust space is provided between the lower end of the partition plate, the periphery of the capture net and the bottom of the material barrel, a first pressure gauge is provided on the material barrel, one end of the first pressure gauge is connected to the exhaust space, the first pressure gauge is used to detect the air pressure in the exhaust space, an air inlet pipe is provided on the material barrel, and both the air inlet pipe and the air outlet pipe are connected to the exhaust space; a discharge space is provided between the upper end of the partition plate, the lower end of the end cover and the inside of the material barrel, a second pressure gauge is provided on the material barrel, one end of the second pressure gauge is connected to the discharge space, the second pressure gauge is used to detect the air pressure in the discharge space, and a second on-off valve is provided at the discharge end of the conveying pipeline.

Compared with the prior art, the pneumatic mixing device for modified concrete of the present invention has the following beneficial effects:

(1) In the pneumatic mixing device for modified concrete described in the present invention, during the production process, workers put modified concrete additives such as cement powder, sand ash and gel particles into the feed hoppers of different feeding augers. Different speeds are set for each feeding augers to achieve different specific gravities of powder put into the conveying pipeline at the same time. Powders of different specific gravities are mixed and blown into a material barrel through the compression space of the conveying pipeline. A powder catcher is arranged in the material barrel. The powder catcher is used to separate the powder and compressed air, and the compressed air is discharged through the air outlet pipe. The powder is collected through the material collection hopper and unloaded through the discharging augers. The pneumatic mixing device can continuously process the pre-mixing of modified concrete powder on the line, with high mixing efficiency and controllable mixing quality.

(2) In the pneumatic mixing device for modified concrete described in the present invention, the support frame is used to improve the structural strength of the capture net. The mesh number of the capture net is not less than 300 meshes to prevent the overflow of cement powder and other particles, thereby ensuring the powder capture quality in the capture space. At the same time, an air purification device is connected in series at the end of the air outlet pipe to prevent the discharged compressed air from polluting the working environment.

(3) In the pneumatic mixing device for modified concrete described in the present invention, multiple powder catchers can improve the powder capture efficiency. At the same time, multiple powder catchers are also a safety measure to prevent pressure buildup in the material barrel. During implementation, at least one catcher needs to be kept clean and unused. If pressure buildup is found in the material barrel, the clean catcher can be opened to release the pressure in the material barrel, thereby ensuring production safety.

(4) In the pneumatic mixing device for modified concrete described in the present invention, the first wedge-shaped slope and the second wedge-shaped slope arranged opposite to each other can be tightly fitted, thereby reducing the extrusion force when the switch plate and the lower closing plate are fitted together, and reducing the risk of friction damage and pressure leakage on the fitting surface. An elastic sealing gasket is arranged between the lower closing plate and the partition plate to ensure the sealing performance of this part. The elastic sealing gasket can provide upward elasticity for the lower closing plate, so that the lower closing plate can be tightly fitted to the end face of the switch plate.

(5) In the pneumatic mixing device for modified concrete described in the present invention, the cross-section of the clamping plate is an L-shaped structure. The clamping plate is used to limit the end face of the switch plate to prevent the lower clamping plate from pressing upward to cause bending damage to the switch plate, thereby increasing the service life of the device.

(6) In the pneumatic mixing device for modified concrete described in the present invention, the slide rod can stabilize the relative position of the lower closing plate, and a spring is arranged on the periphery of the slide rod. The spring is used for elastic reset of the lower closing plate, and the relative position of the lower closing plate on the partition plate can be adjusted by screwing the positioning nut, so that the staff can adjust the initial position of the lower closing plate.

(7) The pneumatic mixing device for modified concrete described in the present invention does not place electrical control devices in the discharge space, conveying pipeline, exhaust space and capture space to prevent dust explosion caused by electric sparks. The mechanical transmission structure has high reliability, while improving production safety.

(8) In the pneumatic mixing device for modified concrete described in the present invention, the air inlet pipe can inject compressed air into the material barrel, and the injected compressed air enters the capture space through the exhaust space, which can reversely blow and wash the mesh of the capture net, thereby achieving the purpose of cleaning the capture net, improving production efficiency, and improving equipment stability.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

FIG1 is a schematic structural diagram of a pneumatic mixing device for modified concrete according to an embodiment of the present invention;

FIG2 is a schematic diagram of the structure inside the material barrel according to an embodiment of the present invention;

FIG3 is a schematic diagram of a structure in which a plurality of switch plates are arranged on a partition plate according to an embodiment of the present invention;

FIG4 is a schematic diagram of the structure of the switch plate and the lower closing plate according to an embodiment of the present invention;

5 is a cross-sectional schematic diagram of the screw rod, the screw sleeve, the sliding shaft and the switch plate according to the embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of a material barrel according to an embodiment of the present invention.

Description of reference numerals:

1-Material barrel; 11-Exhaust space; 12-Discharge space; 2-Conveying pipeline; 3-Feeding auger; 4-Exhaust pipe; 5-Material collecting hopper; 51-Feeding pipe; 6-Discharge auger; 7-Powder catcher; 71-Support frame; 72-Switch plate; 73-Partition plate; 74-Sliding shaft; 75-Screw; 76-Screw sleeve; 77-Screw rod; 78-End cover; 79-Handwheel; 710-First shaft seat; 711-Lower closing plate; 712-Elastic sealing pad; 713-Pressure plate; 714-Sliding rod; 715-Spring; 716-Capture space; 8-Inlet pipe.

DETAILED DESCRIPTION

It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

As shown in Figures 1 to 6, the pneumatic mixing device for modified concrete includes a material barrel 1, a conveying pipeline 2, a feed auger 3, a discharge auger 6 and a powder catcher 7. The powder catcher 7 is installed in the material barrel 1, and the conveying pipeline 2 and the air outlet pipe 4 are respectively arranged on the material barrel 1. A plurality of feed augers 3 are arranged on the conveying pipeline 2, and the plurality of feed augers 3 are independently arranged. Each feed augers 3 is used to quantitatively push a kind of powder material into the conveying pipeline 2. The conveying pipeline 2 is filled with compressed air, and the compressed air is used to blow and mix a variety of powder materials and then blow them into the material barrel 1. A material collecting hopper 5 is arranged at the lower end of the material barrel 1. The powder catcher 7 is used to capture the powder in the material barrel 1 and settle it in the material collecting hopper 5. The material collecting hopper 5 is connected to the discharge auger 6, and the discharge auger 6 is used to export the material collection. The powder material in the bucket 5 and the compressed air in the material barrel 1 are discharged through the outlet pipe 4. During the production process, the staff puts modified concrete additives such as cement powder, sand ash and gel particles into the feeding buckets of different feeding screw dragons 3. Each feeding screw dragon 3 is set with a different speed to achieve the specific gravity of different powders put into the conveying pipe 2 at the same time. The powders with different specific gravities are mixed and blown into the material barrel 1 through the compression space of the conveying pipe 2. A powder catcher 7 is arranged in the material barrel 1. The powder catcher 7 is used to separate the powder and compressed air, and the compressed air is discharged through the outlet pipe 4. The powder is collected through the material collecting bucket 5 and then unloaded through the discharging screw dragon 6. The pneumatic mixing device can continuously process the pre-mixing of modified concrete powder on the line, with high mixing efficiency and controllable mixing quality.

The powder catcher 7 includes a support frame 71, and both ends of the support frame 71 are fixedly connected to the material barrel 1 respectively. The inner circle of the support frame 71 is a capture space 716. A capture net is arranged on the periphery of the support frame 71, and both ends of the capture space 716 are connected to the conveying pipe 2 and the material collecting bucket 5 respectively. Compressed air can blow the mixed powder material to the inner circle of the support frame 71, and the mixed powder material falls into the material collecting bucket 5 through the capture space 716. The compressed air passes through the capture net and is discharged from the material barrel 1 through the air outlet pipe 4. The support frame 71 is used to improve the structural strength of the capture net. During implementation, the capture net can be a multi-layer composite net with a mesh number of not less than 300 meshes to prevent cement powder and other particulate matter from overflowing and ensure the powder capture quality of the capture space 716. At the same time, an air purification device is connected in series at the end of the air outlet pipe 4 to prevent the discharged compressed air from polluting the working environment. The air purification device of this embodiment is a water pool, which is filled with water, and the outlet end of the air outlet pipe 4 is located in the water body.

A plurality of powder catchers 7 are arranged in the material barrel 1, and the plurality of powder catchers 7 are arranged parallel to each other, and a switch plate 72 is correspondingly arranged for each powder catcher 7, and a partition plate 73 is arranged in the material barrel 1, and a feeding hole is arranged on the partition plate 73, and each feeding hole corresponds to a powder catcher 7, and the upper end of the powder catcher 7 is fixedly connected to the lower end of the partition plate 73, and a switch plate 72 is slidably arranged on the upper end of the partition plate 73, and the sliding switch plate 72 is used for opening and closing the feeding hole. A plurality of powder catchers 7 can improve the powder capturing efficiency, and at the same time, a plurality of powder catchers 7 are also a safety measure to prevent pressure build-up in the material barrel 1. During implementation, at least one catcher needs to be kept clean and unused. When pressure build-up is found in the material barrel 1, the catcher kept clean can be opened to release the pressure in the material barrel 1 to ensure production safety, and the switch plate 72 is the on-off structure of the powder catcher 7, so as to realize the control of the working state of each powder catcher 7.

A sliding shaft 74 is provided on one side of the switch plate 72, and the periphery of the sliding shaft 74 is slidably connected to the partition plate 73 through a first shaft seat 710, a screw rod 75 is provided at one end of the sliding shaft 74, the periphery of the screw rod 75 is threadedly connected to a screw sleeve 76, and one end of the screw sleeve 76 is rotatably sleeved on the partition plate 73 through a second shaft seat, the periphery of the screw sleeve 76 is uniformly serrated, and a screw rod 77 is rotatably sleeved on the partition plate 73, and the periphery of the screw rod 77 is meshed with the serrations, an end cover 78 is provided on the upper end of the material barrel 1, the periphery of the screw rod is rotatably sleeved on the end cover 78, a hand wheel 79 is provided at one end of the screw rod 77, and the hand wheel 79 is located outside the material barrel 1, and the sliding The periphery of the moving shaft 74 is a polygonal structure, and a sliding hole corresponding to the polygonal structure is provided on the first shaft seat 710. The periphery of the sliding shaft 74 is slidably connected to the sliding hole, and the first shaft seat 710 is fixedly connected to the partition plate 73. The staff can open and close a single powder capturer 7 by turning the hand wheel 79 outside the material barrel 1. Its working principle is that the screw rod 77 drives the screw sleeve 76 to rotate, and the polygonal sliding hole interferes with the rotation of the sliding shaft 74 and the screw 75, so that the screw 75 and the screw sleeve 76 rotate with each other, and the screw 75 drives the sliding shaft 74 and the switch plate 72 to slide axially, thereby realizing the opening or closing of a single capturer.

Each feeding hole on the partition plate 73 corresponds to a lower closing plate 711, and the feeding hole is concentrically arranged with the lower closing plate 711. The lower closing plate 711 is a hollow cylindrical structure, and an elastic sealing pad 712 is arranged between the lower closing plate 711 and the partition plate 73. The upper end of the lower closing plate 711 is provided with a first wedge-shaped slope, and the lower end of the switch plate 72 is provided with a second wedge-shaped slope. The first wedge-shaped slope and the second wedge-shaped slope are arranged oppositely, and the lower end of the switch plate 72 can be attached to the upper end of the lower closing plate 711. As shown in FIG4 , the first wedge-shaped slope and the second wedge-shaped slope arranged opposite to each other can be airtightly fitted, thereby reducing the extrusion force when the switch plate 72 and the lower closing plate 711 are fitted together, and reducing the risk of friction damage to the fitting surface and pressure leakage. An elastic sealing gasket 712 is arranged between the lower closing plate 711 and the partition plate 73 to ensure the sealing performance of this part. The elastic sealing gasket 712 can provide upward elasticity for the lower closing plate 711, so that the lower closing plate 711 can be tightly fitted to the end face of the switch plate 72.

A pressing plate 713 is arranged on the periphery of the lower closing plate 711, and the pressing plate 713 does not interfere with the sliding of the switch plate 72. One end of the pressing plate 713 is fixedly connected to the upper end of the partition plate 73, and the lower end of the pressing plate 713 can abut against the upper end of the switch plate 72. As shown in FIG. 4 , the cross-section of the pressing plate 713 is an L-shaped structure. The pressing plate 713 is used to limit the end face of the switch plate 72 to prevent the lower closing plate 711 from pressing upward to cause bending damage to the switch plate 72, so as to improve the service life of the device.

When the locking nut 715 is unlocked, the locking nut 710 is locked to the locking nut 710 when the locking nut 710 is unlocked, and the lock nut 710 is unlocked when the locking nut 710 is unlocked.

The material collecting hopper 5 is a funnel-shaped structure. The lower end of the material collecting hopper 5 is connected to the discharging auger 6 through a feeding pipe 51, and a first on-off valve is arranged on the feeding pipe 51. An exhaust space 11 is arranged between the lower end of the partition plate 73, the periphery of the capture net and the bottom of the material barrel 1. A first pressure gauge is arranged on the material barrel 1. One end of the first pressure gauge is connected to the exhaust space 11. The first pressure gauge is used to detect the air pressure of the exhaust space 11. An air inlet pipe 8 is arranged on the material barrel 1. The air inlet pipe 8 and the air outlet pipe 4 are both connected to the exhaust space 11. A discharge valve is arranged between the upper end of the partition plate 73, the lower end of the end cover 78 and the inside of the material barrel 1. Space 12, a second pressure gauge is provided on the material barrel 1, one end of the second pressure gauge is connected to the discharge space 12, the second pressure gauge is used to detect the air pressure in the discharge space 12, and a second on-off valve is provided at the discharge end of the conveying pipeline 2, the air outlet pipe 4 and the air inlet pipe 8 are both provided with ball valves of the prior art, the first pressure gauge and the second pressure gauge are both mechanical pressure gauges of the prior art, and no electrical control devices are placed in the discharge space 12, the conveying pipeline 2, the exhaust space 11 and the capture space 716 to prevent dust explosion caused by electric sparks, and the mechanical transmission structure has high reliability, while improving production safety.

The air inlet pipe 8 can inject compressed air into the material barrel 1, and the injected compressed air enters the capture space 716 through the exhaust space 11, and can reversely blow the mesh of the capture net to achieve the purpose of cleaning the capture net, improve production efficiency, and improve equipment stability.

The control method of this embodiment is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. This article is mainly used to protect mechanical devices. The control method and circuit connection are not explained in detail in this article.

Material mixing process of the pneumatic mixing device for modified concrete:

The staff puts different kinds of powder materials into the feeding hoppers of different feeding augers 3 and ensures the continuity of the feeding. Each feeding auger 3 is set to a different speed. Different materials are fed per unit time according to the feeding speed, and different kinds of powder materials are put into the feeding pipeline. The conveying pipeline 2 is filled with compressed air through an external air compressor. The compressed air can blow the powder materials and mix them. The compressed air entrains the materials and blows them into the material barrel 1. The powder catcher 7 arranged in the material barrel 1 separates the powder and the compressed air, and the compressed air is discharged through the air outlet pipe 4. The powder is collected through the material collecting bucket 5 and unloaded through the discharging auger 6, so as to realize the pre-mixing of the modified concrete powder in a continuous on-line manner with high mixing efficiency.

Working process of the switch plate opening and closing the material hole:

The staff turns the hand wheel 79, which drives the screw rod 77 to rotate. The outer periphery of the screw rod meshes with the saw teeth, and the screw sleeve 76 is rotatably sleeved on the partition plate 73 through the second shaft seat. The fixed screw can drive the screw sleeve 76 to rotate. The sliding shaft 74 is slidably connected to the partition plate 73 through the first shaft seat 710. The polygonal sliding hole interferes with the rotation of the sliding shaft 74 and the screw rod 75, so that the screw rod 75 and the screw sleeve 76 rotate relative to each other. The rotating screw sleeve 76 can drive the screw rod 75, the sliding shaft 74 and the switch plate 72 to slide axially. When the switch plate 72 slides downwardly to the closing plate 711, the first When the locking cam 715 is in the unlocking state, the spring 715 is tightened to lock the locking cam 714 in the unlocking state, thereby locking the locking cam 714 in the unlocking state.

The working process of reverse flushing of the capture net by the air intake pipe:

The staff stops the feeding auger 3 from feeding, stops injecting compressed air into the feeding pipeline, and empties the material in the material collecting bucket 5 through the discharging auger 6, closes the second on-off valve of the conveying pipeline 2, closes the first on-off valve of the feeding pipe 51, closes the passage of each feeding hole through the hand wheel 79, and closes the passage of the air outlet pipe 4, and injects compressed air into the material barrel 1 through the air inlet pipe 8. The pressure of the exhaust space 11 can be read through the first pressure gauge. The pressure of the exhaust space 11 is higher than the pressure of the capture space 716, which will reversely blow the mesh of the capture net. When the pressure in the material barrel 1 reaches the set value, the staff can open the corresponding switch plate 72 through the hand wheel 79 to realize the reverse blowing of the specified capture net. The principle is that the exhaust space The accumulated pressure in 11 will enter the discharge space 12 through the capture space 716 and the material passing hole. When the pressure in the discharge space 12 is equal to that in the exhaust space 11, the mesh of the capture net is blown and cleaned. At this time, the material barrel 1 continues to be pressurized through the air inlet pipe 8. When the set value is reached, the staff opens the second on-off valve, and the discharge space 12 and the exhaust space 11 are quickly depressurized to blow and clean the mesh of the capture net. The multiple switch plates 72 can also be opened to facilitate the reverse flushing of multiple capture nets. When flushing the capture net, the first on-off valve should be avoided to prevent the powder from depressurizing and rushing into the discharge auger 6 in a disorderly manner, which is inconvenient to clean. Cleaning the capture net can be daily maintenance or it can be a pressure relief operation when the second pressure gauge of the discharge space 12 reaches the warning value.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Pneumatic mixing arrangement of modified concrete, its characterized in that: including material bucket (1), pipeline (2), feeding auger (3), ejection of compact auger (6) and powder trapper (7), install powder trapper (7) in material bucket (1), set up pipeline (2) and outlet duct (4) on material bucket (1) respectively, lay a plurality of feeding augers (3) on pipeline (2), and a plurality of feeding augers (3) all independently set up, every feeding auger (3) all are used for the ration to push a powder material in pipeline (2), fill compressed air in pipeline (2), compressed air is used for blowing the mixture with multiple powder material in material bucket (1), material bucket (1) lower extreme sets up material collection fill (5), powder in material collection fill (5) are used for catching material bucket (1) and subside in, material collection fill (5) are connected ejection of compact auger (6), material collection fill (6) are used for exporting the powder material in material collection fill (5), and material bucket (1) are passed through compressed air in outlet duct (4).

2. The pneumatic mixing device for modified concrete according to claim 1, wherein: the powder catcher (7) comprises a supporting framework (71), two ends of the supporting framework (71) are respectively and fixedly connected into the material bucket (1), an inner ring of the supporting framework (71) is a catching space (716), a catching net is arranged on the periphery of the supporting framework (71), two ends of the catching space (716) are respectively communicated with the conveying pipeline (2) and the material collecting bucket (5), compressed air can blow mixed powder materials into the inner ring of the supporting framework (71), the mixed powder materials fall into the material collecting bucket (5) through the catching space (716), and the compressed air passes through the catching net and is discharged out of the material bucket (1) from the air outlet pipe (4);

The number of captured meshes is not less than 300 meshes.

3. The pneumatic mixing device for modified concrete according to claim 2, wherein: set up a plurality of powder trappers (7) in material bucket (1), and a plurality of powder trappers (7) are parallel to each other set up switch board (72) each powder trapper (7) corresponds, set up partition panel (73) in material bucket (1), be equipped with the passing hole on partition panel (73), every passing hole corresponds a powder trapper (7), and the upper end fixed connection of powder trapper (7) is to the lower extreme of partition panel (73), the upper end slip of partition panel (73) board sets up switch board (72), gliding switch board (72) are used for the break-make of passing the material hole.

4. A pneumatic mixing device for modified concrete according to claim 3, wherein: a sliding shaft (74) is arranged on one side of the switch plate (72), the periphery of the sliding shaft (74) is connected to the partition plate (73) in a sliding manner through a first shaft seat (710), a screw (75) is arranged at one end of the sliding shaft (74), the periphery of the screw (75) is connected into a screw sleeve (76) in a threaded manner, one end of the screw sleeve (76) is sleeved on the partition plate (73) through a second shaft seat in a rotating manner, saw teeth are uniformly distributed on the periphery of the screw sleeve (76), a screw rod (77) is sleeved on the partition plate (73) in a rotating manner, and the periphery of the screw rod (77) is meshed with the saw teeth;

An end cover (78) is arranged at the upper end of the material barrel (1), the periphery of the screw rod is rotatably sleeved on the end cover (78), a hand wheel (79) is arranged at one end of the screw rod (77), and the hand wheel (79) is positioned outside the material barrel (1).

5. The pneumatic mixing device for modified concrete according to claim 4, wherein: the periphery of the sliding shaft (74) is of a polygonal structure, a sliding hole corresponding to the polygonal structure is formed in the first shaft seat (710), the periphery of the sliding shaft (74) is connected into the sliding hole in a sliding mode, and the first shaft seat (710) is fixedly connected onto the partition plate (73).

6. A pneumatic mixing device for modified concrete according to claim 3, wherein: every material passing hole on partition panel (73) corresponds sets up a lower plywood (711), and material passing hole and lower plywood (711) set up with one heart, and lower plywood (711) are hollow cylinder structure, and set up elastic sealing pad (712) between lower plywood (711) and partition panel (73), and the upper end of lower plywood (711) is provided with first wedge slope, and the lower extreme of switch board (72) is equipped with the second wedge slope, first wedge slope with the opposite direction of second wedge slope sets up, and the lower extreme of switch board (72) can laminate to the upper end of lower plywood (711).

7. The pneumatic mixing device for modified concrete according to claim 6, wherein: the periphery of the lower plywood (711) is provided with a pressing board (713), the pressing board (713) does not interfere the sliding of the switch board (72), one end of the pressing board (713) is fixedly connected to the upper end of the partition board (73), and the lower end of the pressing board (713) can be abutted to the upper end of the switch board (72);

the cross section of the pressing plate (713) is L-shaped.

8. The pneumatic mixing device for modified concrete according to claim 6, wherein: the lower extreme of lower plywood (711) sets up a plurality of slide bars (714), and the one end fixed connection of every slide bar (714) is to the lower extreme of lower plywood (711), and the lock is makeed after the other end of slide bar (714) passes partition panel (73), and the periphery of slide bar (714) sets up spring (715), and the both ends of spring (715) are fixed connection to the lower extreme of partition panel (73) respectively, the periphery of lock is makeed, and the peripheral threaded connection locating nut of slide bar (714), and the upper end of locating nut can the butt to the lower extreme of partition panel (73).

9. The pneumatic mixing device for modified concrete according to claim 1, wherein: the material collecting hopper (5) is of a funnel-shaped structure, the lower end of the material collecting hopper (5) is connected to the discharging auger (6) through the material passing pipe (51), and a first on-off valve is arranged on the material passing pipe (51).

10. A pneumatic mixing device for modified concrete according to claim 3, wherein: an exhaust space (11) is arranged between the lower end of the partition plate (73), the periphery of the capturing net and the bottom of the material barrel (1), a first pressure gauge is arranged on the material barrel (1), one end of the first pressure gauge is communicated to the exhaust space (11), the first pressure gauge is used for detecting the air pressure of the exhaust space (11), an air inlet pipe (8) is arranged on the material barrel (1), and the air inlet pipe (8) and the air outlet pipe (4) are both communicated to the exhaust space (11); a discharging space (12) is arranged between the upper end of the partition plate (73), the lower end of the end cover (78) and the inside of the material barrel (1), a second pressure gauge is arranged on the material barrel (1), one end of the second pressure gauge is communicated to the discharging space (12), the second pressure gauge is used for detecting the air pressure of the discharging space (12), and a second on-off valve is arranged at the discharging end of the conveying pipeline (2).