CN104772231B - A kind of pre- de slime flotation complete set of equipments - Google Patents

Abstract

The invention belongs to the technical field of mineral separation, and in particular relates to a complete set of pre-sliming flotation equipment. By setting up the self-interference elastic rectification and desliming unit, the inclined rectification hole formed by the inclined plate is used as the rectification device, which can change the turbulent flow into laminar flow and accelerate the sedimentation of particles, shortening the settling time; The narrow diversion channel forms a high-speed flow, which forms convective interference on the material flow at the bottom of the first material drainage channel in the self-interference mixing zone, thereby making the material disturb and settle, accelerating the separation of clean coal and fine mud, and improving the efficiency of flotation feeding. Desliming in advance to reduce the viscosity of the flotation feed material; at the same time, the connecting rod jet stirring suction mechanism is adopted, and the suction nozzle is used to spray the impeller in the air chamber, driving the connecting rod stirring impeller in the flotation tank, overcoming the resistance of the sprayed water body, and greatly reducing energy consumption , so that pulps of different concentrations are fully mixed under reasonable impeller agitation and provide sufficient air intake to improve flotation efficiency.

Description

A complete set of pre-desliming flotation equipment

technical field

The invention belongs to the technical field of mineral separation, and in particular relates to a complete set of pre-sliming flotation equipment.

Background technique

In the process of wet coal preparation, the clay minerals mixed into the coal seam are muddy after being soaked in water, dispersed into fine mud, and accumulated in the floating coal slurry. The flotation speed of high-ash fine mud is fast, resulting in "sticky" foam, which brings difficulties to the subsequent flotation clean coal dehydration operation. At the same time, the fine mud has a large specific surface area, which "preemptively" adsorbs the flotation agent, so that ordinary coal particles cannot obtain the agent. It makes it more difficult for general coal particles to adhere to air bubbles, which deteriorates the flotation effect and is extremely unfavorable to coal preparation production. Therefore, it is necessary to deslime the coal slime in the coal preparation plant before selection. However, the existing flotation feed desliming tank occupies a large area, and the vertical tube bundle rectification device adopted changes the rising water flow from turbulent flow to laminar flow, and the free settlement is not sufficient in the time period. At the same time, in the flotation stage, because the commonly used jet flotation machine is not equipped with a stirring device, when the concentration of the pulp is high, it cannot provide enough power to realize the full mixing and dispersion of the pulp, air bubbles, and flotation agents; while the mechanical stirring type The high speed of the stirring device of the flotation machine requires high energy consumption, and the low speed cannot form a good flow field and suction volume. However, the new jet suction stirring mechanism is close to the plume because the slurry in the jet section is submerged. Most of the injection energy is consumed by the pulp, so the injection efficiency is greatly reduced, which greatly reduces the stirring efficiency and interferes with the stirring flow field.

Contents of the invention

The purpose of the present invention is to provide a complete set of pre-desliming flotation equipment, which can effectively pre-desilt the flotation feed materials by setting a self-interference elastic rectification desliming unit, improve the flotation desliming effect, and occupy an area The area is small; at the same time, the connecting rod jet stirring and suction mechanism is adopted to overcome the resistance of the sprayed water body and reduce energy consumption, so that the pulp of different concentrations can be fully mixed evenly under the lower impeller stirring action and provide sufficient suction capacity to improve floating. Choose efficiency.

In order to achieve the above object, the present invention adopts the following technical solutions: a complete set of pre-desliming flotation equipment, including self-interference elastic rectification desliming unit, slurry pump, slurry delivery pipe, bracket and connecting rod jet stirring suction flotation device.

The self-interference elastic rectification deslimer unit includes a slurry inlet bin, a first feed pipe, a self-interference elastic rectification desilter, and an underflow collection bin.

The pulp inlet bin is set above the self-interference elastic rectification desilter, the upper end of the pulp inlet bin is provided with a first inlet, and the side wall is uniformly provided with a pulp distribution outlet connected to the first inlet pipe. feed port;

The self-interference elastic rectifying desilter is located below the slurry feeding bin, and is arranged in multiples and distributed uniformly in a circle, mainly including a feeding valve, an inclined box, an overflow port, a diversion partition, a drainage partition, Elastic inclined tube bundle rectification device, first material drainage channel, second material drainage channel, inclined plate, rectification hole, overflow plate, self-interference mixing area, underflow valve, first underflow port, spring.

The feeding valve is located at the lower part of the slurry feeding bin and is connected with the first feeding pipe, and its opening is adjustable to control the amount of feeding; the upper end of the inclined box is connected with the feeding valve for the feeding of materials. Sorting, the outside is provided with an overflow port, and the inside is provided with a diversion partition, a drainage partition and an elastic inclined tube bundle rectification mechanism; the diversion partition is placed inside the inclined box and at the lower end of the feed valve to divide the feed flow into two Part, the upper left and the drainage partition also placed inside the inclined box form the first material drainage channel, the lower right and the inner cavity of the inclined box form the second material drainage channel, the drainage partition is placed inside the inclined box, and the right The bottom and the diversion partition form the first material drainage channel, and the upper left and the inner cavity of the inclined box are used to place the elastic inclined tube bundle rectification mechanism; The cross-section is a parallelogram grid-like rectification hole; the setting is a tank body with the same width as the inclined box body, and the upper right end is connected with the overflow port outside the inclined box body; the self-interference mixing area is located in the inclined box body The lower ends of the first material drainage channel and the second material drainage channel of the box; the underflow valve is located at the lower end of the elastic inclined tube bundle rectification mechanism, and is used to control the discharge of underflow products from the first underflow port.

Preferably: the upper end of the diversion partition is arranged on the side close to the drainage partition, and the lower end is arranged on the side close to the inclined box, so that the cross-section of the second material drainage channel is formed into a trapezoidal shape, so that the second material drainage channel can obtain The high-speed flow forms convective interference on the bottom flow of the first material drainage channel in the self-interference mixing zone, so that the material is subjected to interference sedimentation and sorting, ensuring that the fine mud is fully separated from the clean coal, reducing the viscosity of the flotation feed material, and improving the flotation efficiency.

Preferably: the upper and lower corners of the elastic inclined tube bundle rectification mechanism are provided with springs for connecting the inclined box and the drainage partition, so that the elastic inclined tube bundle rectification mechanism can generate buoyancy according to the difference in feed concentration and feed amount Different automatic fine-tuning heights ensure that overflowing materials have a reasonable time to interfere with settlement, thereby ensuring effective removal of fine mud materials.

Preferably: the elastic inclined tube bundle rectification mechanism is composed of inclined plates, which shortens the particle settlement distance, increases the settlement area, shortens the settlement time, achieves rapid settlement, and increases the number of settlements; at the same time, the inclined plate forms a parallelogram rectification The hole makes the rising water flow change from turbulent flow to laminar flow, prevents the formation of vortex, and improves the desliming efficiency.

The underflow collection bin is located in the middle of each self-interference elastic rectification desilter, and the side wall of the underflow collection bin is uniformly provided with a second inlet for connecting the first underflow port of the self-interference elastic rectification desilter; The lower end of the underflow collection bin is provided with a second underflow port.

The bracket is located below the self-interference elastic rectification and desliming unit, and is used to support the self-interference elastic rectification and desliming unit.

The slurry delivery pump is fixed on the bracket, the inlet of the slurry delivery pump is connected with the second underflow port of the underflow collection bin, and the outlet of the slurry delivery pump is connected with one end of the slurry delivery pipe.

The connecting-rod jet-stirring suction flotation device includes a flotation cell, a rotating support, and a connecting-rod jet-stirring suction mechanism.

The pulp inlet and the pulp outlet are respectively arranged on the body of the flotation cell; the pulp inlet of the flotation cell is connected with the other end of the slurry delivery pipe; the upper side of the flotation cell is provided with a rotating bracket, and the rotating bracket There is a scraper on the top of the flotation cell, and a separator 1 and a separator 2 are arranged in the middle of the flotation cell. The height of the support, the area between the inner wall of the flotation cell and the first partition and the second partition is the concentrate secondary enrichment area, and the scrapers are respectively arranged on the upper side of the concentrate secondary enrichment area. The bottom of the flotation cell is provided with a false bottom and a through hole under the false bottom.

The connecting rod jet agitation suction mechanism includes a jet rotation area, a diversion area, a stirring mixing area, and a connecting rod impeller mechanism.

The spraying rotation area is located on the upper side of the rotating support, and consists of a mixing bin, a third feeding port, a second feeding pipe, a flotation agent adding pipe, a stirring chamber, a jetting suction nozzle, a bearing fixing groove, a first suctioning tube, automatic regulating valve; the mixing bin presents an inverted "U" shape, used for mixing flotation reagents and flotation feeding materials, and a third material inlet is provided on the outer side wall of the mixing bin, The inner wall of the mixing bin is evenly arranged with jet suction nozzles, and the upper end is provided with a concave bearing fixing groove; the mixing chamber is surrounded by the inner side wall of the mixing bin and steel plates; the jet suction nozzles are evenly fixed On the inner side wall of the stirring chamber, and the first suction pipe is nested inside the jet suction nozzle, and one end of the first suction pipe communicates with the atmosphere; the discharge end of the second feeding pipe is nested in In the discharge end of the flotation agent addition pipe, and connected with the third feed port; the upper end of the flotation agent addition pipe is provided with an automatic regulating valve fixed on the inner wall of the flotation agent addition pipe through a hinge, which can be adjusted according to the input The injection speed of the material is used to adjust the feeding amount of the flotation agent.

The stirring and mixing area includes a closed cover, a second suction pipe, and a discharge channel; the closed cover is conical, and its upper end connects with the lower port of the diversion area. The lower port of the second suction pipe communicates with the suction holes evenly distributed on the upper end of the closure cover, and the upper port of the second suction pipe communicates with the atmosphere; The groove is surrounded by the inner wall of the closed cover, and the lower side wall of the upper port is surrounded by a circular opening, which communicates with the lower port of the second diversion tube in the diversion area.

The diversion zone is composed of a first diversion cylinder and a second diversion cylinder; the upper port of the first diversion cylinder is connected with the lower port of the jet rotation zone, and the lower port of the first diversion cylinder is connected with the stirring The port on the sealing cover of the mixing zone is connected; the second guide tube is nested in the first guide tube, and the outer wall of the second guide tube is separated from the inner wall of the first guide tube to form an annular guide channel, The diameter of the inner ring of the second guide tube is greater than the diameter of the connecting rod, so that the connecting rod can pass through smoothly; the lower port of the second guide tube is connected with the circular opening surrounded by the lower wall of the upper port of the discharge channel, thereby Ensure that the diversion channel is connected with the discharge channel, so that the material is discharged at the outer edge of the blade of the second stirring impeller.

The connecting rod impeller mechanism is composed of a first stirring impeller, a connecting rod, a second stirring impeller, and double bearings; the connecting rod is placed in the cavity where the jet rotation area, the diversion area and the stirring mixing area are connected; The upper end of the connecting rod is set as a screw end, and after passing through the inner ring of the double bearing placed in the bearing fixing groove, it is tightened by a nut and suspended under the bearing fixing groove; the blades of the first stirring impeller are evenly fixed It is connected to the upper part of the connecting rod and placed in the stirring chamber; the blade of the second stirring impeller is uniformly fixed to the lower part of the connecting rod and placed under the closed cover in the stirring and mixing area.

A kind of pre-deliming flotation complete set of the present invention, its beneficial effect is manifested in:

1. The self-interference elastic rectification desliming unit described in the present invention has a simple structure, a small footprint, and convenient equipment layout. At the same time, multiple machines are used in parallel to process materials, and the processing capacity is large; the unit is a non-powered structure, which reduces energy consumption and increases equipment service life.

2. The self-interference elastic rectification desilter of the present invention adopts the inclined rectification hole formed by the inclined plate as the rectification device, which can change the turbulent flow into laminar flow and accelerate particle sedimentation, shorten the settling time and improve the desilting efficiency .

3. The self-interference elastic rectification desilter of the present invention adopts a diversion channel with a wide top and a narrow bottom in the cross section to form a high-speed flow, and form convective interference to the material flow at the bottom of the first material drainage channel in the self-interference mixing zone, so that The material disturbs the settlement, accelerates the separation of clean coal and fine mud, reduces the viscosity of the flotation feed material, and improves the flotation efficiency.

4. The self-interference elastic rectification desilter of the present invention adopts an elastic inclined plate rectification device and an elastic connection, which can self-adaptively adjust to changes in different concentrations and feed amounts, and improve the effect of sorting and desliming.

5. The connecting rod jet stirring and suction mechanism of the present invention adopts the method of spraying and adding flotation agents. Since the feeding nozzle is nested in the flotation agent adding pipe, the amount of flotation agents added can be adjusted according to the speed of the feed flow. To adjust, so that the flotation agent can be added stably and quantitatively according to the production needs, and the material and the flotation agent can be fully mixed.

6. The first stirring impeller of the connecting rod impeller mechanism adopted in the present invention is placed in the air chamber, and the jet suction nozzle sprays the impeller in the jet rotation area to drive the impeller to rotate, which avoids the huge energy loss during submerged jetting and improves the second The stirring speed of the stirring impeller in the slurry increases the air intake and optimizes the stirring effect.

7. The present invention uses the jet suction nozzle to drive the impeller, and the jet flow drives the suction pipe to suck air, which increases the suction capacity of the flotation mechanism, and the impeller ejects the material, which better improves the mixing effect of the material and the pulp .

8. The present invention adopts diversion channels and discharge channels, so that the mixed pulp is discharged along the outer edge of the blades of the second stirring impeller, reducing the rotational resistance of the second stirring impeller and ensuring a good suction environment.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Figure 2 is a schematic diagram of the self-interference elastic rectification desilter

Figure 3 is a schematic diagram of the structure of the elastic inclined tube bundle rectification device

Figure 4 is a schematic diagram of the structure of the overflow

Figure 5 is a schematic diagram of the structure of the connecting rod jet stirring suction mechanism

Figure 6 is a schematic diagram of the structure of the flotation reagent injection addition device

Figure 7 is a schematic diagram of the structure of the flotation cell

The reference signs in the figure have the following meanings:

10—Self-interference elastic rectification deslimer unit 11—Pulp input bin 110—First material inlet 111—Ore pulp distribution outlet 12—First feed pipe 13—Self-interference elastic rectification desilter 130—Feed valve 131—inclined box 132—overflow port 133—distribution partition 134—drainage partition 135—elastic inclined tube bundle rectification device 1350—inclined plate 1351—rectification hole 136—first material drainage channel 137—second material drainage channel 138 - overflow plate 139 - self-interference mixing area 1310 - underflow valve 1311 - first underflow port 1312 - spring 14 - underflow collection bin 141 - second material inlet 142 - second underflow port 20 - slurry pump 30 - delivery Slurry pipe 40—support 50—connecting rod jet stirring suction flotation device 51—flotation cell 511—pulp inlet 512—pulp outlet 513—scraper 515—partition one 516—partition two 517—concentrate secondary enrichment Collecting area 518—false bottom 519—through hole 52—rotating bracket 53—connecting rod jet stirring suction mechanism 531—jet rotation area 5311—mixing bin 5312—third material inlet 5313—second material inlet pipe 5314—floating Selective agent addition pipe 5315—stirring chamber 5316—jet suction nozzle 5317—bearing fixing groove 5318—first suction pipe 5319—automatic regulating valve 532—diversion area 5321—first diversion cylinder 5322—second diversion cylinder 5323—guiding channel 533—stirring and mixing area 5331—closed cover 5332—second suction pipe 5333—discharge channel 534—connecting rod impeller mechanism 5341—first stirring impeller 5342—connecting rod 5343—second stirring impeller 5344— double bearing

Detailed ways

As shown in Figures 1-7, in order to achieve the above object, the present invention adopts the following technical solutions:

A complete set of pre-desliming flotation equipment, including a self-interference elastic rectification desliming unit (10), a slurry delivery pump (20), a slurry delivery pipe (30), a support (40) and a connecting rod jet stirring suction flotation device (50).

The self-interference elastic rectification deslimer unit (10) includes a slurry feeding bin (11), a first feeding pipe (12), a self-interference elastic rectification deslimer (13), and an underflow collection bin (14).

The pulp feeding bin (11) is arranged above the self-interference elastic rectifying desilter (13), the upper end of the pulp feeding bin (11) is provided with a first feeding port (110), and the side walls are uniformly arranged There is an ore slurry distribution outlet (111) connected with the first feeding pipe (12).

The self-interference elastic rectifying desilter (13) is located below the pulp feeding bin (11), and is arranged in multiples and distributed uniformly in a circle, mainly including a feeding valve (130), an inclined box (131), Overflow port (132), diversion partition (133), drainage partition (134), elastic inclined tube bundle rectification device (135), first material drainage channel (136), second material drainage channel (137), inclined plate (1350), rectification hole (1351), overflow plate (138), self-interference mixing zone (139), underflow valve (1310), first underflow port (1311), spring (1312).

The feeding valve (130) is located at the lower part of the slurry feeding bin (11), connected to the first feeding pipe (12), and has an adjustable opening, which is used to control the amount of feeding; the inclined box (131 ) is connected to the feed valve (130) at the upper end for material sorting, with an overflow port (132) on the outside, a flow divider (133), a drainage divider (134) and an elastic inclined tube bundle rectification mechanism ( 135); the splitter baffle (133) is placed inside the inclined casing (131) and is positioned at the lower end of the feed valve (130), and the feed flow is divided into two parts, and the upper left and the same are placed in the inclined casing (131) The internal drainage partition (134) constitutes the first material drainage channel (136), the lower right and the inner cavity of the inclined box (131) form the second material drainage channel (137), and the drainage partition (134) is placed on an inclined Inside the box (131), the lower right and the diverter partition (133) form the first material drainage channel (136), and the upper left and the inner cavity of the inclined box (131) are used to place the elastic inclined tube bundle rectification mechanism (135); The elastic inclined tube bundle rectification mechanism (135) is parallel to the drainage partition (134), and a grid-like rectification hole (1351) with a parallelogram cross section surrounded by an inclined plate (1350) is arranged on it; the (138 ) is set as a tank with the same width as the inclined box (131), and the upper right end is connected to the overflow port (132) outside the inclined box (131); the self-interference mixing zone (139) is located in the inclined box (131) the lower end of the first material drainage channel (136) and the second material drainage channel (137); the underflow valve (1310) is located at the lower end of the elastic inclined tube bundle rectification mechanism (135), and is used to control the first underflow port ( 1311) discharge the underflow product.

Preferably: the upper end of the diversion baffle (133) is set on the side close to the drainage baffle (134), and the lower end is set on the side close to the inclined box (131), so that the cross section of the second material drainage channel (137) is formed It is trapezoidal, so that high-speed flow is obtained in the second material drainage channel (137), and convective interference is formed on the bottom flow of the first material drainage channel (136) in the self-interference mixing zone (139), so that the material is subjected to interference sedimentation sorting, Ensure that the fine mud is fully separated from the clean coal, reduce the viscosity of the flotation feed material, and improve the flotation efficiency.

Preferably: the upper and lower corners of the elastic inclined tube bundle rectifying mechanism (135) are provided with springs (1312) for connecting the inclined box body (131) and the drainage partition (136), so that the elastic inclined tube bundle rectifying mechanism (135) ) can automatically fine-tune the height according to the different buoyancy produced by the different feeding concentration and feeding amount, so as to ensure that the overflowing material has a reasonable time to disturb the settlement, so as to ensure the effective removal of fine mud material.

Preferably: the elastic inclined tube bundle rectification mechanism (135) is composed of an inclined plate (1350), which shortens the particle settlement distance, increases the settlement area, shortens the settlement time, achieves rapid settlement, and increases the number of settlements; at the same time, the inclined plate (1350 ) to form rectifying holes (1351) with a parallelogram cross section to change the rising water flow from turbulent flow to laminar flow, prevent vortex formation and improve desliming efficiency.

The underflow collection bin (14) is located in the middle of the respective interference elastic rectification desilters (13), and the side walls of the underflow collection bins (14) are evenly provided with holes for connecting the self-interference elastic rectification desilters (13) The second material inlet (141) of the first bottom flow port (1311); the second bottom flow port (142) is provided at the lower end of the bottom flow collection bin (14).

The support (40) is located below the self-interference elastic rectification and desliming unit (10), and is used to support the self-interference elastic rectification and desliming unit (10).

The slurry delivery pump (20) is fixed on the support (40), the inlet of the slurry delivery pump (20) is connected with the second underflow port (142) of the underflow collection bin (14), and the slurry delivery pump ( 20) the outlet links to each other with the slurry pipe (30) one end.

The connecting rod jet stirring suction flotation device (50) comprises a flotation cell (51), a rotating support (52), and a connecting rod jet stirring suction mechanism (53).

The pulp inlet (511) and the pulp outlet (512) are respectively arranged on the body of the flotation cell (51), and the pulp inlet (511) of the flotation cell (51) is connected to the other end of the slurry delivery pipe (30) ; The upper side of the flotation cell (51) is provided with a rotary support (52), the rotary support (52) is provided with a scraper (513), the center of the flotation cell (51) is provided with a partition (515) and dividing plate two (516), the two ends of described dividing plate one (515) and dividing plate two (516) are respectively connected with the two ends inner wall of flotation cell (51) and the top is all lower than rotating support ( 52), the area between the inner wall of the flotation cell (51) and partition one (515) and partition two (516) is the concentrate secondary enrichment zone (517), and the scraper (513 ) are respectively arranged on the upper side of the concentrate secondary enrichment area (517), and the bottom of the flotation cell (51) is provided with a false bottom (518) and a through hole (519) below the false bottom (518).

The connecting rod jet agitation suction mechanism (53) includes a jet rotation area (531), a diversion area (532), a stirring mixing area (533), and a link impeller mechanism (534).

The spraying rotation area (531) is located on the upper side of the rotating bracket (52), and consists of a mixing bin (5311), a third material inlet (5312), a second material inlet pipe (5313), and a flotation reagent addition pipe (5314) ), a stirring chamber (5315), a jet suction nozzle (5316), a bearing fixing groove (5317), a first suction pipe (5318), and an automatic regulating valve (5319); the mixing bin (5311) is inverted The "U" shape is used for mixing flotation reagents and flotation feed materials. A third material inlet (5312) is provided on one side of the outer wall of the mixing bin (5311), and the mixing bin (5311) Jet suction nozzles (5316) are evenly arranged on the inner side wall, and a concave bearing fixing groove (5317) is arranged on the upper end; the mixing chamber (5315) is surrounded by the inner side wall of the mixing bin (5311) and steel plates; The jet suction nozzle (5316) is evenly fixed on the inner side wall of the stirring chamber (5315), and the jet suction nozzle (5316) is nested inside the first suction pipe (5318), and the first suction pipe ( 5318) is connected to the atmosphere; the discharge end of the second feed pipe (5313) is nested in the discharge end of the flotation agent addition pipe (5314), and is connected to the third feed port (5312) Connect; the upper end of the flotation agent addition pipe (5314) is provided with an automatic regulating valve (5319) fixed on the inner wall of the flotation agent addition pipe (5314) by a hinge, which can adjust the flow rate of the flotation agent according to the injection speed of the feed. Feed amount.

The stirring and mixing area (533) includes a closed cover (5331), a second suction pipe (5332), and a discharge channel (5333); ) are connected to the lower ports. The lower port of the second suction pipe (5332) communicates with the suction holes (5334) evenly distributed on the upper end of the closure cover (5331), and the upper port of the second suction pipe (5332) communicates with the atmosphere; The discharge channel (5333) is surrounded by a groove with a "U" shape in cross section and the inner wall of the closure cover (5331), and is arranged in multiples, and the lower side wall of the upper port forms a circular opening, and the diversion area (532) The lower port of the second guide tube (5322) is connected.

The diversion area (532) is composed of a first diversion cylinder (5321) and a second diversion cylinder (5322); the upper port of the first diversion cylinder (5321) and the lower port of the jet rotation region (531) The ports are connected, and the lower port of the first guide tube (5321) is connected with the upper port of the closure cover (5331) of the mixing zone (531); the second guide tube (5322) is nested in the first guide tube In the tube (5321), the outer wall of the second guide tube (5322) is separated from the inner wall of the first guide tube (5321) to form an annular guide channel (5323), and the inner ring of the second guide tube (5322) The diameter is greater than the diameter of the connecting rod (5342), ensuring that the connecting rod (5342) can pass through smoothly; The port (5334) is connected, thereby ensuring that the diversion channel (5323) is connected with the discharge channel (5333), so that the material is discharged at the outer edge of the blade of the second stirring impeller (5343).

The connecting rod impeller mechanism (534) is composed of a first stirring impeller (5341), a connecting rod (5342), a second stirring impeller (5343), and double bearings (5344); area (531), diversion area (532) and stirring mixing area (533) three connected cavity; the upper end of the connecting rod (5342) is set as a screw end, through the bearing fixed groove (5317 The inner ring of the double bearing (5344) in the ) is tightened by a nut, and is suspended under the bearing fixing groove (5317); the blades of the first stirring impeller (5341) are evenly fixed on the The upper part, and placed in the stirring chamber (5315); the blades of the second stirring impeller (5343) are evenly consolidated on the lower part of the connecting rod (5342), and placed in the closed cover ( 5331) under.

Below in conjunction with Fig. 1-7, the working process of the present invention is further described:

Coal slime water flows out from the slurry distribution outlet (111) of the slurry input bin (11), enters the self-interfering elastic rectification desilter (13) through the first feeding pipe (12), and flows through the splitter (133) The distributing flow is two streams of material flow with the same velocity, one stream of material is conveyed downward along the first material drainage channel (136), and the other stream of material is transported downward along the second material drainage channel (137) with the same initial velocity. transport, and form an upward interference flow at the bottom of the self-interference mixing zone (139) with a high-speed flow to carry out self-interference settlement with the flow in the first material drainage channel (136), to accelerate the separation of clean coal and fine mud, so as to ensure fine mud Effective removal of materials; then the height of the mixture flow continues to rise, passing through the rectification holes on the elastic inclined tube bundle rectification mechanism (135), turbulent flow becomes laminar flow, and the inclined plate (1350) increases the settling area and shortens the settling distance, accelerating the particle Settling; at the same time, the elastic inclined tube bundle rectification mechanism (135) can automatically fine-tune the height according to the buoyancy produced by the difference in feed concentration and feed amount, so as to ensure that the overflow material has a reasonable time to disturb the settlement, thereby ensuring the effective removal of fine mud materials. remove. After disturbing the settlement, the mud ash flows out from the overflow port (132) along with the overflow, and at the same time, the underflow material flows out from the first bottom flow port (1311) of the self-interference elastic rectification desilter (13) and gathers in the bottom flow collection bin (14 ), enter the slurry pump (20) through the second bottom outlet (142), the slurry pump (20) pumps the material out under pressure, and enter the flotation tank under pressure from the slurry inlet (511) through the slurry delivery pipe (30) (51) participates in flotation, while the circulating slurry at the bottom of the flotation tank (51) is sucked out from the bottom through hole by the underflow pump, and is injected into the mixing chamber (5311) under pressure, and at the same time, the jet flow drives the flotation agents into the mixing chamber (5311). The silo (5311) is mixed, and the mixed pulp is ejected through the jet suction nozzle (5316), and the first stirring impeller (5341) is driven to rotate while sucking in a large amount of gas, thereby driving the second stirring impeller at the lower end of the connecting rod (5342). The impeller (5343) rotates and stirs the pulp to perform flotation; the pulp jetted by the first stirring impeller (5341) is mixed again and then discharged to the outer edge of the impeller through the diversion channel (5323) and the discharge channel (5333) , to ensure a good inhalation environment. The flotation mineralized foam is thrown out from the outer edge of the blade of the second stirring impeller (5343), then floats up to the liquid level above the flotation area, and fully accumulates at the upper ends of the first partition (515) and the second partition (516). , and is scraped out of the flotation cell (51) by the scraper (513), while the unscraped mineralized foam is deposited downwards to the concentrate secondary enrichment area (517), and the concentrate secondary enrichment area on both sides The mineralized foam that sinks in the collection area (517) sinks to the lower ends of the first partition (515) and the second partition (516), and crosses the first partition (515) and the second partition (516) respectively. to the flotation area to realize flotation again; the ore pulp that settles to the bottom of the flotation tank (51) then enters the next flotation tank (51) through the outlet for flotation again.

This description is only a description of the preferred embodiment of the invention, and is not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements to the technical solutions of the present invention may be made by those skilled in the art. All should fall within the scope of protection determined by the claims of the present invention.

Claims (6)

1. A complete set of pre-deliming flotation equipment, characterized in that: it includes a self-interference elastic rectification desliming unit, a slurry delivery pump, a slurry delivery pipe, a bracket and a connecting rod jet stirring suction flotation device; The self-interference elastic rectification deslimer unit includes a slurry inlet bin, a first feed pipe, a self-interference elastic rectification desilter, and an underflow collection bin; The self-interference elastic rectifying desilter is located below the slurry feeding bin, and is arranged in multiples and distributed uniformly in a circle, mainly including a feeding valve, an inclined box, an overflow port, a diversion partition, a drainage partition, Elastic inclined tube bundle rectification device, first material drainage channel, second material drainage channel, inclined plate, rectification hole, overflow plate, self-interference mixing area, underflow valve, first underflow port, spring; The connecting-rod jet-stirring suction flotation device includes a flotation cell, a rotating support, and a connecting-rod jet-stirring suction mechanism. 2. The complete set of pre-desliming flotation equipment according to claim 1, characterized in that: the feeding valve is located at the lower part of the slurry feeding bin; the upper end of the inclined box is connected with the feeding valve, and an overflow is provided outside There are diversion partitions, drainage partitions and elastic inclined tube bundle rectification devices inside; the diversion partitions are placed inside the inclined box and at the lower end of the feed valve, and the upper left is connected to the drainage partition also placed inside the inclined box. Constitute the first material drainage channel, the lower right and the inner cavity of the inclined box form the second material drainage channel; the drainage partition is placed inside the inclined box, the lower right and the diversion partition form the first material drainage channel, the upper left and the inclined box The inner cavity of the box is used to place an elastic inclined tube bundle rectification device; the elastic inclined tube bundle rectification device is parallel to the drainage partition, and a grid-like rectification hole with a parallelogram cross section surrounded by inclined plates is arranged on it; the overflow The flow plate is set in the shape of a tank with the same width as the inclined box, and the upper right end is connected to the overflow port outside the inclined box; the self-interference mixing area is located in the first material drainage channel and the second material of the inclined box. The lower end of the drainage channel; the underflow valve is located at the lower end of the rectification device of the elastic inclined tube bundle. 3. The complete set of pre-desliming flotation equipment according to claim 1, characterized in that: the upper end of the diversion partition is arranged on the side close to the drainage partition, and the lower end is arranged on the side close to the inclined box, so that the second material The cross-section of the drainage channel is formed into a trapezoidal shape; the elastic inclined tube bundle rectification device is composed of inclined plates, and the inclined plate forms a rectification hole with a parallelogram in cross section; the upper and lower corners of the elastic inclined tube bundle rectification device are provided with Springs connecting the tilting box to the drain baffle. 4. The complete set of pre-desliming flotation equipment according to claim 3, characterized in that: said connecting rod jet agitation suction mechanism includes a jet rotation area, a diversion area, an agitation mixing area, and a connecting rod impeller mechanism. 5. The complete set of pre-desliming flotation equipment according to claim 4, characterized in that: the spraying rotating area is located on the upper side of the rotating support, and consists of a mixing bin, a third feeding port, a second feeding pipe, and a flotation The medicine adding pipe, the mixing chamber, the jet suction nozzle, the bearing fixing groove, the first suction pipe, and the automatic regulating valve are composed; the mixing bin presents an inverted "U" shape; one side of the outer wall of the mixing bin is There is a third material inlet; the inner wall of the mixing bin is evenly arranged with jet suction nozzles, and the upper end is provided with a concave bearing fixing groove; the mixing chamber is surrounded by the inner side wall of the mixing bin and steel plates; The jet suction nozzle is evenly fixed on the inner side wall of the mixing chamber, and the first suction pipe is nested inside the jet suction nozzle; one end of the first suction pipe communicates with the atmosphere; the second feeding The discharge end of the tube is nested in the discharge end of the flotation agent addition pipe and connected to the third feed port; the upper end of the flotation agent addition pipe is provided with a hinge fixed to the inner wall of the flotation agent addition pipe. The automatic regulating valve; the stirring and mixing area includes a closed cover, a second suction pipe, and a discharge channel; the closed cover is conical, and the upper end is connected with the lower port of the diversion area; the second suction The lower port of the pipe communicates with the evenly distributed suction holes on the upper end of the closed cover; the upper port of the second suction pipe communicates with the atmosphere; Enclosed, set to a plurality of and the lower side wall of the upper port is surrounded by a circular opening, which communicates with the lower port of the second guide tube in the diversion area; the guide area is composed of the first guide tube and the second guide tube. The flow cylinder is composed of; the upper port of the first flow guide cylinder is connected with the lower port of the jet rotation zone, and the lower port of the first flow guide cylinder is connected with the upper port of the closed cover of the stirring and mixing zone; the second flow guide The tube is nested in the first guide tube; the outer wall of the second guide tube is separated from the inner wall of the first guide tube to form an annular guide channel; the diameter of the inner ring of the second guide tube is larger than the diameter of the connecting rod ; The lower port of the second guide tube is connected to the circular opening surrounded by the lower wall of the upper port of the discharge channel. 6. The complete set of pre-deliming flotation equipment according to claim 5, characterized in that: the connecting rod impeller mechanism is composed of a first stirring impeller, a connecting rod, a second stirring impeller, and double bearings; the connecting rod is placed In the cavity where the jet rotation area, diversion area and stirring mixing area are connected; the upper end of the connecting rod is set as a screw end, which passes through the inner ring of the double bearing placed in the bearing fixing groove and then rotates through the nut. tight, hanging under the bearing fixing groove; the blades of the first stirring impeller are evenly fixed on the upper part of the connecting rod, and placed in the stirring chamber; the blades of the second stirring impeller are evenly fixed on the connecting rod The lower part, and placed under a closed hood in the stirring mixing zone.