CN110935208B - Multi-product rake-free concentration device - Google Patents

Abstract

The invention relates to the field of coal slime water treatment, in particular to a multi-product harrow-free concentration device which comprises a feeding assembly, a flow guide assembly, a clean coal collecting assembly and a central groove body, wherein coal slime water flows from the upper part of the central groove body to the middle part of the central groove body through the feeding assembly and then diffuses towards the periphery, mineralized residual bubbles and fine coal slime move upwards from the inner side wall of the central groove body to the clean coal collecting assembly after reaction, the clean coal collecting assembly is positioned above an outlet of the flow guide assembly, and the clean coal collecting assembly is sequentially provided with an edge feeding area and a foam removing area from the outside to the inside. The invention has the advantages that: this device realizes that traditional multistage concentrated pond is structural unites two into one, the area in traditional multistage concentrated pond that has significantly reduced.

Description

Multi-product rake-free concentration device

Technical Field

The invention relates to the field of slime water treatment, in particular to a multi-product rake-free concentration device.

Background

The treatment of coal slurry water in the washing and selecting process of coal is used as the ending link of the washing and selecting process, which is the key of the effective collection and utilization of coal slurry and the closed-circuit circulation of washing and selecting water, and the concentration device is widely used as the carrier and the key equipment of the treatment of coal slurry water, and has important significance for the closed-circuit circulation of washing and selecting water, the full utilization of underflow concentrate and environmental protection.

Along with the integration and large-scale of coal washing plants, the treatment capacity is greatly improved, the output of slime water and the content of fine mud in the slime water are also greatly increased, so that the diameter of a concentration device is continuously increased in the application process, the existing equipment has a specification reaching 45m or more, and the fine mud is more refined and the treatment capacity is increased, so that the settling time period is short, the settling effect is poor, the fine mud in washing circulating water cannot be effectively separated, the coal washing quality is seriously influenced, and therefore, two-stage concentration or even three-stage concentration is added for further purifying the washing circulating water in many coal washing plants, a large amount of land is occupied, coal-carrying foam which is not completely recovered in a flotation stage is still remained in the slime water, the waste of fine coal is caused, and the economic loss is caused.

Disclosure of Invention

In order to fully utilize the multistage sedimentation technology to realize the multistage concentration combination on the structure of the thickener, the defoaming technology is utilized to realize the recovery and utilization of clean coal on the residual mineralized foam, so that the occupied area is greatly reduced, the clean coal recovery is increased, the multistage diversified utilization of the coal slime is realized, the economic income is increased, and the waste is reduced. Therefore, the invention provides a multi-product rake-free concentrating device.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a no harrow enrichment facility of many products, the device includes pan feeding subassembly, water conservancy diversion subassembly, clean coal collection subassembly, the water conservancy diversion subassembly still includes central cell body, and coal slime water flows to the middle part of central cell body from the top of central cell body through the pan feeding subassembly, then to diffusing all around, and remaining mineralize mineralization bubble and fine coal slime after the reaction are from the inside wall upward movement of central cell body to the clean coal collection subassembly in, the clean coal collection subassembly is located the top that the water conservancy diversion subassembly exported, the clean coal collection subassembly has set gradually edge feed area, defoaming district from the extroversion.

The invention has the advantages that:

(1) this device realizes that traditional multistage concentrated pond is structural unites two into one, the area in traditional multistage concentrated pond that has significantly reduced.

(2) The clean coal collecting assembly is arranged in the central groove body, coal slime water is gradually settled from top to bottom along the radial direction through the high-level plate and the low-level plate, overflow water is collected in a flowing manner, and unpowered flowing of fluid is achieved.

(3) The separation of coarse coal slime products and fine coal slime products is realized, the coarse coal slime products can be used as the coal blending of middling coal products due to high coal content, the economic income is increased, the waste is reduced, the fine coal slime products are accumulated and discharged in a centralized manner, the pollution is reduced, the more sufficient separation of the fine coal slime and water is realized, and the washing process deterioration phenomenon caused by circulating water is greatly improved.

(4) Whether the fine mud can settle in the thickener depends mainly on the vertical movement distance of fine particles, and the arrangement of high and low guide plates in the diversion settling sieve can ensure that the second-stage slime water obtains sufficient settling time in a limited space, thereby realizing the full settling of the fine mud.

(5) The setting of bubble breaker can realize the desorption of concentrate on the residual mineralize mineralization bubble through the mode of pulsation hammering, and the efflux water still can realize washing and collecting of attaches wall concentrate simultaneously.

(6) Gather magnetic shower's setting and can use magnetic particle as the kind of magnetism, strengthen the depending on of flocculating agent to the adhesion of thin mud and flocculating agent is accelerated, the settlement with higher speed of realizing thin mud, the abundant separation of further realization mud and water.

(7) The pan feeding adopts horn mouth pan feeding and dispersion guide plate to cut apart the loudspeaker discharge gate and form the multiple channel export cloth for the cloth is more even, optimizes the settlement environment.

(8) The setting of pan feeding subassembly is through drawing the interpolation that penetrates the effect and realize flocculating agent, expands suddenly through the fluid simultaneously and contracts suddenly, leads to the change of pressure differential, leads to appearing the turbulent aggravation phenomenon to realize the intensive mixing of flocculating agent and ore pulp.

Drawings

FIG. 1 is a schematic view showing the direction of flow of coal water in the present invention.

Fig. 2 is a structural diagram of the whole device when the diversion settling area is the first scheme.

Fig. 3 is a structural diagram of the whole device when the diversion settling area is the second scheme.

Fig. 4 is a structural diagram of the whole apparatus when the guide settling zone is the third scheme.

FIG. 5 is a structural diagram of a clean coal collection assembly with a diversion settling zone as the first option.

Fig. 6 is a schematic structural diagram of a guided settling zone as a foam killer.

Fig. 7 is a structural diagram of a diversion sedimentation zone in the first scheme.

Fig. 8-9 are structural diagrams of the foam-eliminating area when the diversion sedimentation area is the second scheme and the third scheme.

Fig. 10 is a structural view of the guide settling zone in the second embodiment.

Fig. 11-12 are structural diagrams of a third embodiment of the flow-guiding settling zone.

Fig. 13 is a structural view of a first distributing device, a second distributing device and a third distributing device.

The notations in the figures have the following meanings:

11-main feeding pipe 12-reducing section 13-medicament injection pipe

21-central groove body 22-central feeding pipe 23-dispersion guide plate 24-first discharging hole

25-bubble guiding plate 26-horizontal supporting rod 27-overflow groove

31-edge feed zone 32-connecting rod

320-lower board 321-side board 322-upper board 323-lower board

324-sudden shrinkage and sudden expansion spoiler 325-spoiler settlement plate

331-first underflow discharge pipe 332-first discharge valve 333-first overflow discharge pipe

341-impact tube 342-grooved roller 343-hammering foam-removing plate 344-hammering rod

345-diversion bent plate 346-reciprocating spring 347-clean coal collecting groove 348-support

351-first magnetism-gathering injection pipe 352-first magnetic powder feeding pipe 353-first distributor

361-second magnetic gathering injection pipe 362-second magnetic powder feeding pipe 363-second distributing device

371-ring groove 3711-second spoiler baffle 3712-second underflow discharge outlet

372-second inclined plate diversion and discharge pipe 373-second underflow discharge pipe 374-second overflow discharge pipe

381-third magnetic injection pipe 382-third magnetic powder feeding pipe 383-third distributing device

391-settling tank 3911-third baffle

392-third inclined plate flow guide and discharge pipe 393-third underflow discharge pipe 394-third overflow discharge pipe

395-connecting pipe

Detailed Description

A multi-product rake-free concentrating device comprises a feeding assembly, a flow guide assembly and a clean coal collecting assembly. The water conservancy diversion subassembly includes that the upper end is central cell body 21 of cylinder portion, lower extreme for funnel portion, central cell body 21 is the cavity structure, the pan feeding subassembly sets up in the cavity top of central cell body 21, the lower tip of central cell body 21 is provided with first discharge gate 24. The coarse slime is gradually settled above the first discharge port 24 of the central groove body 21 and is settled to reach a certain settlement amount, the coarse slime is discharged through the first discharge port 24, and materials discharged from the first discharge port 24 are collected and used for blending middlings or used as building materials, so that the economic income is increased.

The material and the medicament flow from the upper part of the central groove body 21 to the middle part of the central groove body 21, namely the direction a in fig. 1, then diffuse from the middle part to the periphery in the direction b, enter the funnel part of the central groove body 21, after the material and the medicament react, the coarse coal slime flows out from the first discharge hole 24, and the guide component enables the floated mineralized bubbles and the fine coal slime to move upwards along the inner side wall of the central groove body in the direction c, then enter the clean coal collecting component, flow from the middle part of the central groove body to the outer side wall of the central groove body 21 after flowing to the middle part of the central groove body 21 in the direction d, and sequentially pass through the defoaming area and the settling area in the process, so that the water and the settled fine coal slime are separated.

The components are described in detail below.

1. Feeding assembly

As shown in fig. 2-4, the feeding assembly includes a main feeding pipe 11, a horizontal supporting rod 26, and a chemical injecting pipe 13.

Coal slime water is input to the one end of main pan feeding pipe 11, and the other end is as the output of pan feeding subassembly, the middle part of main pan feeding pipe 11 includes reducing section 12, and in this scheme, reducing section 12 comprises ball and pipe, forms suddenly to expand and suddenly contracts alternative calabash form.

The medicament draws penetrates pipe 13 equipartition in the department that contracts suddenly of reducing section 12 to be linked together with the pipe of department that contracts suddenly, because the velocity of flow of department that contracts suddenly can increase, draw the handing-over department formation negative pressure of pipe 13 and reducing section 12 at the medicament, consequently can draw the flocculating agent of expecting in the pipe 13 to the medicament and play fine suction effect, at the increase of the department pressure that expands suddenly, the velocity of flow slows down, turbulence intensity increases at this moment, flocculating agent and slime water obtain intensive mixing.

The opening degree of the inlet of the medicament injection pipe 13 can be controlled by a superior valve to regulate and control the inhalation amount of the medicament. The materials and the medicament are mixed by the injection of the reducer section 12.

2. Flow guide assembly

As shown in fig. 2-4, the diversion assembly includes a jet feeding pipe 22 and a dispersion diversion plate 23, an input end of the jet feeding pipe 22 is connected with an outlet end of the feeding assembly, and the dispersion diversion plate 23 diffuses the coal slime water output by the jet feeding pipe 22 to the periphery. The materials and the medicament are mixed and reacted at the funnel part of the central groove body 21, the coarse coal slime is gradually settled to the deep cone of the central groove body 21 for deposition, and a certain deposition amount is discharged through the first discharge hole 24. A foam guiding plate 25 is further arranged above the outlet of the dispersion guide plate 23, and the foam generated after the reaction carries fine coal slime to move upwards along with the foam guiding plate 25 from the outer side wall of the central groove body 21 to the clean coal collecting assembly. In this scheme, the water conservancy diversion subassembly is discharged coarse coal mud from first discharge gate 24 on the one hand, and on the other hand makes fine coal mud water along with remaining mineralized bubble upwards move to clean coal collection subassembly along inside wall all around in central cell body 21 through leading bubble board 25, makes fine coal mud and separation of water.

In order to support the upper feeding assembly and the jet feeding pipe 22, a horizontal support rod 26 is fixed on the outer side wall of the jet feeding pipe 22.

3. Clean coal collecting assembly

Clean coal collection assembly is including the marginal feeding zone 31 that is located central cell body 21 medial surface department, a plurality of defoaming district, the subsidence area that corresponds with the defoaming district, dispersion guide plate 23 in the water conservancy diversion subassembly is located the below in defoaming district, a plurality of defoaming district annular array are between marginal feeding zone 31 and central pan feeding pipe 22.

3.1 edge feed zone 31

As shown in fig. 2-6 and 8, in order to support the bubble-removing area, the bubble-removing area is connected with the inner side surface of the central groove 21 by a plurality of connecting rods 32, and an edge feeding area 31 is formed between two adjacent connecting rods 32. The end part of the foam guiding plate 25 close to the connecting rod 32 is connected with the bottom of the foam extinguishing area and is kept in a sealing state, and the foam is prevented from carrying fine coal slime to enter the upper part of the dispersing guide plate 23. In the scheme, the defoaming area is gradually reduced towards the center of the central groove body 21, in order to prevent the foam carrying fine coal slime from directly entering the tail end of the defoaming area, the bottom of the defoaming area and the foam guiding plate 25 form a sealed cavity, and specifically, the foam guiding plate 25 is of a spherical structure.

3.2 bubble eliminating zone

As shown in fig. 2-6 and 8-9, the bubble-removing area includes a first diversion sedimentation screen and a plurality of bubble-removing devices located at a set position above the first diversion sedimentation screen, and the plurality of bubble-removing devices are sequentially arranged along the fluid flowing direction, so as to improve the bubble-removing effect.

3.2.1 first diversion sedimentation screen

As shown in fig. 2-6 and fig. 8-9, the first diversion and sedimentation screen includes two side edge plates 321, a first diversion area is enclosed by a lower plate body 320, the lower plate body 320 is communicated with a first underflow discharge pipe 331 therebelow through a first discharge valve 332, so that the clean coal deposited at the bottom can be recovered. The output end of the first underflow discharge pipe 331 extends out of the central trough body 21. The first material discharge valve 332 is opened at a fixed time, so that the material with clean coal deposited on the lower plate body 320 can be discharged. The upper end of the edge plate 321 is higher than the outer edge of the edge feeding area 31, so that the material overflowing from the edge feeding area 31 to the first guiding area can not overflow directly and needs to be processed by the clean coal collecting assembly. The height of the upper end part of the high-level plate 322 of the first diversion area is gradually reduced along the flow direction of the slime water.

Preferably, the first flow guiding region is alternately provided with high plates 322 and low plates 323 at intervals along the fluid flowing direction, and the high plates 322 and the low plates 323 are staggered up and down and are fixedly connected between the two side plates 321 at intervals. Fluid flows through the lower end of the high-level plate 322 and the upper end of the low-level plate 323, and the sedimentation rate of the fine coal slime is increased. The right side of the first discharge valve 332 at each lower plate 320 is a high plate 322, and the left side is a low plate 323.

Preferably, a sudden shrinkage and sudden expansion spoiler 324 is arranged in an ascending flow area formed by enclosing the high-level plate 322 and the low-level plate 323 of the first diversion sedimentation screen, so that the secondary enrichment effect of escaping foam is increased, fine coal slime is removed, and hammering foam-removing recovery at the rear end of a foam-removing area is facilitated.

3.2.2 bubble trap

As shown in fig. 6, each bubble removing area includes a plurality of bubble removing devices arranged along a radial direction of the cylindrical portion, and each bubble removing device includes a supporting unit, a hammering unit, a driving unit, and a flow guide unit.

The support unit includes brackets 348, a first bracket 348 is fixed above the plate body where the first diversion area and the edge feeding area 31 intersect, and the other brackets 348 are fixed on the upper end surface of the elevation plate 322. In particular, the support 348 is tripod-shaped with the underlying support plate by two side bars, which not only provides support, but also does not interfere with the flow of material into and through the first flow guide region.

The hammering unit comprises a hammering foam-removing plate 343, a clean coal collecting groove 347 and a hammering rod 344. One end of the hammering rod 344 is hinged with the bracket 348, the other end is hinged with the hammering defoaming plate 343, and the clean coal collecting groove 347 is fixed on the side plate 321.

The driving unit comprises an impact pipe 341, a grooved roller 342 and a reciprocating spring 346, wherein the upper end of the impact pipe 341 is communicated with the jet flow feeding pipe 22, and the lower end of the impact pipe is opposite to the inner wall of the clean coal collecting groove 347 on the grooved roller 342. The middle part of the hammering rod 344 is connected with the middle parts of two side rods of a bracket 348 through a reciprocating spring 346, and the grooved roller 342 is arranged on the hammering rod 344 and is connected through a rotating shaft; the hammer blow plate 343 is hammered downward and the hammer rod 344 is impacted and deflected centrally by an amount less than the compression of the reciprocating spring 346. When the material in the jet feeding pipe 22 flows into the grooved roller 342 from the impact pipe 341, the grooved roller 342 rotates at a non-uniform speed, the whole driving unit and the hammering unit increase in mass, the reciprocating spring 346 is in a compressed state, the hammering defoaming plate 343 compresses into the clean coal collecting groove 347 until the material in the grooved roller 342 is too much, so that the roller rotates to dump all the material, here, the hammering defoaming plate 343 is far away from the clean coal collecting groove 347 due to the energy accumulated by the reciprocating spring 346, the hammering defoaming plate 343 beats the clean coal collecting groove 347 in a reciprocating manner by periodic motion, and defoaming is realized. The coal slime water thrown out from the impact pipe 341 washes clean coal on the hammering foam-eliminating plate 343, so that the clean coal is discharged from a concentrate discharge port into a clean coal collecting groove 347 and is collected.

The flow guide unit comprises a flow guide bent plate 345, and the flow guide bent plate 345 is arranged at the lower section of the clean coal collecting groove 347 and is arranged in a down-flow interval surrounded by the high-level plate 322 and the low-level plate 323 of the first flow guide settling sieve. The mineralized foam enters the foam extinguishing area, rises to the inlet of the clean coal collecting groove 347 along the guide bent plate 345 in the roller pulse foam extinguishing device, and enters the clean coal collecting groove 347.

In summary, the non-settled fine coal slurry and the mineralized bubbles regenerated by the residual flotation reagent and the clean coal are collected to the edge feeding area 31 along with the water flow; then the water is shunted to the first diversion sedimentation sieve, and then passes through the second diversion sedimentation sieve, and the slime water containing fine slime flows to the edge of the central groove body 21 along the radial direction.

3.3 flow guiding settling zone

The diversion settling zone can have various schemes, which are specifically described as follows:

a3.3 first scheme of diversion settling zone

As shown in fig. 2 and 7, the diversion sedimentation areas are multiple and correspondingly arranged at the rear of the foam-removing area, and are both located between the inner side walls of the edge feeding area 31 and the central groove body 21, and each diversion sedimentation area comprises a second diversion sedimentation screen and a magnetic gathering sprayer located at a set position above the second diversion sedimentation screen.

A3.3.1 second diversion sedimentation screen

As shown in fig. 2 and 7, the second guiding sedimentation screen and the first guiding sedimentation screen are integrated, and the turbulence plates 325 are replaced by the suddenly-contracted and suddenly-expanded turbulence plates 324 in the first guiding sedimentation screen, so as to increase the disturbing sedimentation effect of the fine coal slurry, and the other structures are the same. Specifically, the height of the uppermost elevation plate 322 is the same as that of the overflow groove 27 in the middle of the central groove 21, so that the fluid after defoaming can overflow to the overflow groove 27, and the bottom of the overflow groove 27 is provided with a first overflow discharge pipe 333 for discharging and recovering the water after precipitation in the overflow groove 27. The outer side wall of the upper end of the cylindrical part of the central groove body 21 is also annularly provided with an overflow groove 27. The first diversion sedimentation screen and the second diversion sedimentation screen are matched to realize multistage sedimentation of slime water, a two-stage thickener is avoided, the occupied area is reduced, and meanwhile, sufficient sedimentation time of fine mud is provided through the mode of central collection and multistage diversion sedimentation.

A3.3.2 magnetic gathering sprayer

As shown in fig. 7, the magnetic concentration sprayer comprises a first magnetic concentration injection pipe 351, a first magnetic powder feeding pipe 352 and a first distributor 353, and the magnetic concentration sprayer is arranged on the elevated plate 322 at the inlet above the second diversion and sedimentation sieve. The upper end of the first magnetic gathering injection pipe 351 is also communicated with the jet flow feeding pipe 22, the lower end of the first magnetic gathering injection pipe is communicated with the first distributing device 353, one end of the first magnetic powder feeding pipe 352 is connected with a pipeline at a magnetic powder supply position, and the other end of the first magnetic gathering injection pipe 351 is communicated with the first magnetic gathering injection pipe 351; the outlet at the lower end of the first distributing device 353 is in a fan-shaped arrangement and is separated by a plurality of partition plates, so that the magnetic material is uniformly gathered and flows down along the side wall of the guide plate fixed on the high-level plate 322, and the accelerated sedimentation of fine coal slime is realized. When the slime water passes through the second diversion sedimentation screen, the magnetism gathering sprayer sprays magnetic seeds to obtain high-efficiency sedimentation, the slime water flows around from the bottom of the high-level plate 322 step by step again, then overflows to a groove body formed between the high-level plate 322 and the low-level plate 323 of the next stage through the top of the low-level plate 323, in the process, the fine slime water can be fully settled through interference sedimentation of the turbulence sedimentation plate 325, is separated from water more thoroughly, is deposited on the lower plate body 320, is discharged through the first underflow discharge pipe 331, and overflows settled through the second diversion sedimentation screen are discharged into the overflow groove 27 to enter a washing process again as circulating water, so that closed-loop circulation is realized.

B3.3, second scheme of diversion settling zone

As shown in fig. 3 and 10, the diversion sedimentation area comprises an annular diversion sedimentation screen and a magnetic gathering sprayer, and the annular diversion sedimentation screen is spirally arranged downwards around a central groove body 21. In this embodiment, the first diversion sedimentation screen in the defoaming area extends to the inner side wall of the central groove 21, and the slime water which is not settled at the first diversion sedimentation screen after defoaming overflows from the central groove 21 to the inlet of the annular diversion sedimentation screen. A magnetism gathering sprayer is arranged above the overflow outlet of each foam extinguishing area.

B3.3.1 annular diversion sedimentation screen

As shown in fig. 3 and 10, the annular flow guiding sedimentation screen comprises an annular groove 371 spirally arranged around a central groove body 21, second turbulence partition plates 3711 are sequentially arranged in the annular groove 371, a second underflow discharge outlet 3712 is arranged on a bottom plate between two adjacent second turbulence partition plates 3711, and the second turbulence partition plates 3711 increase the interference sedimentation effect of fine coal slime. Second inclined plate diversion discharge pipes 372 are arranged below the second underflow discharge ports 3712, outlets of all the second inclined plate diversion discharge pipes 372 are converged to the second underflow discharge pipe 373, namely settled materials are discharged from the second underflow discharge pipe 373, settled water passes through a second turbulence partition plate 3711 in the annular groove 371 and then is discharged from a second overflow discharge pipe 374 arranged at the tail end of the annular groove 371, and the water is used as circulating water to enter the washing and sorting process again, so that closed cycle is realized.

B3.3.2 magnetic gathering sprayer

As shown in fig. 3 and 10, the magnetism gathering sprayer includes a second magnetism gathering ejector 361, a second magnetic powder feeding pipe 362, and a second material distributor 363. The upper end of the second magnetic particle injection pipe 361 is also communicated with the jet flow feeding pipe 22, the lower end of the second magnetic particle injection pipe 361 is communicated with the second distributing device 363, one end of the second magnetic particle feeding pipe 362 is connected with a pipeline at a magnetic particle supply position, and the other end of the second magnetic particle feeding pipe 361 is communicated with the second magnetic particle injection pipe 361; the outlet at the lower end of the second material distributor 363 is in a fan shape and is separated by a plurality of partition plates, so that magnetic materials collected at the outlet flow down along the side wall of the guide plate uniformly, and accelerated sedimentation of fine coal slime is realized. When the slime water passes through the annular diversion sedimentation screen, the magnetism gathering sprayer sprays magnetic seeds to obtain high-efficiency sedimentation.

C3.3, third scheme of diversion settling zone

As shown in fig. 11-12, the water conservancy diversion settlement zone includes laminar flow diversion sieve and magnetic gathering sprayer, laminar flow diversion sieve sets up to the lower floor along central cell body 21 outer wall, and in this embodiment, the first water conservancy diversion sieve in defoaming district extends to the inside wall department of central cell body 21, and the coal slime water that does not subside in first water conservancy diversion sieve department after the defoaming spills over central cell body 21 to laminar flow diversion sieve in. A magnetism gathering sprayer is arranged above the overflow outlet of each foam extinguishing area.

C3.3.1 layered descending diversion sedimentation screen

As shown in fig. 11-12, the laminar flow guiding and settling sieve includes a plurality of third flow guiding and settling subgroups arranged along the outer wall of the central groove 21 in sequence, each third flow guiding and settling subgroup includes a settling tank 391, a plurality of third spoiler plates 3911 are alternately arranged in the settling tank 391, the third spoiler plates 3911 can be alternately arranged on two side plates of the settling tank 391 according to the arrangement mode of the high-level plate 322 and the low-level plate 323, wherein the third spoiler plates 3911 increase the disturbing settling effect of the fine coal slurry.

A third underflow discharge port is arranged on the bottom plate of each settling tank 391, a third inclined plate flow guide discharge pipe 392 is arranged below each settling tank 391, fine coal slime discharged from all the third underflow discharge ports in each settling tank 391 is collected, outlets of all the third inclined plate flow guide discharge pipes 392 are collected to the third underflow discharge pipe 393, and finally, the fine coal slime after settling is discharged from the third underflow discharge pipe 393.

The part of the coal slime water which is not settled passes through all the third turbulence partition plates 3911 in each third diversion settlement sub-group, and is output to the inlet of the next third diversion settlement sub-group from the connecting pipe 395 to the third diversion settlement sub-group at the lowest part, and the water which is completely settled is output from the third overflow discharge pipe 394 at the output end of the third diversion settlement sub-group at the lowest part and is used as circulating water to enter the washing and dressing process again, so that closed cycle is realized.

C3.3.2 magnetic gathering sprayer

As shown in fig. 4 and fig. 11-12, the magnetism gathering sprayer includes a third magnetism gathering injection pipe 381, a third magnetic powder feeding pipe 382, and a third distributing device 383, the upper end of the third magnetism gathering injection pipe 381 is also communicated with the jet flow feeding pipe 22, the lower end is communicated with the third distributing device 383, one end of the third magnetic powder feeding pipe 382 is connected with a pipeline at a magnetic powder supply position, and the other end is communicated with the third magnetism gathering injection pipe 381; the outlet at the lower end of the third distributing device 383 is in a fan shape and is separated by a plurality of partition plates, so that magnetic materials are uniformly gathered at the outlet and flow down along the side wall of the guide plate, and accelerated sedimentation of fine coal slime is realized. When the slime water passes through the layer falling diversion sedimentation screen, the magnetism gathering sprayer sprays magnetic seeds to obtain high-efficiency sedimentation, and then the fine slime is fully sedimentated in the process and is separated from the water more thoroughly. In order to realize better settlement effect, in the scheme, the input ends of the third diversion settlement subgroups are respectively provided with a magnetism gathering sprayer.

As shown in fig. 13, the first distributor 353, the second distributor 363, and the third distributor 383 are all identical in structure. The multi-runner distributor is adopted, so that the distributor is more uniform, the stirring of the rakes is not needed in the working process, the rake pressing phenomenon is thoroughly solved, and the continuous and stable work of the thickener is ensured.

In summary, in the clean coal collecting assembly, the structure of the edge feeding area 31 and the foam-removing area and the three diversion sedimentation areas are combined at will to form different technical schemes.

The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Claims (8)

1. The multi-product rake-free concentration device is characterized by comprising a feeding assembly, a flow guide assembly and a clean coal collecting assembly, wherein the flow guide assembly further comprises a central groove body (21), coal slime water flows from the upper part of the central groove body (21) to the middle part of the central groove body (21) through the feeding assembly and then diffuses to the periphery, residual mineralized bubbles and fine coal slime move upwards from the inner side wall of the central groove body (21) to the clean coal collecting assembly after reaction, the clean coal collecting assembly is positioned above an outlet of the flow guide assembly, and the clean coal collecting assembly is sequentially provided with an edge feeding area (31) and a foam removing area from outside to inside;

the flow guide assembly comprises a jet flow feeding pipe (22) and a dispersion guide plate (23), the input end of the jet flow feeding pipe (22) is connected with the outlet end of the feeding assembly, and the dispersion guide plate (23) diffuses the slime water output by the jet flow feeding pipe (22) to the periphery;

the bubble district that disappears includes first water conservancy diversion sieve settler, is located the bubble ware that disappears of first water conservancy diversion sieve settler upper side settlement position department, the bubble ware that disappears includes hammering unit, drive unit, the hammering unit includes hammering bubble board that disappears (343), clean coal collection silo (347), hammer blow pole (344), hammering bubble board that disappears (343) articulates the one end at hammer blow pole (344), be fixed with the support element on the sieve settler of first water conservancy diversion, the other end of hammer blow pole (344) articulates on the support element, clean coal collection silo (347) are fixed on sideboard (321) of first water conservancy diversion sieve settler, drive unit one end is fixed on the support element, and the other end is connected with the middle part of hammer blow pole (344).

2. The rakeless concentrating device for multiple products according to claim 1, wherein the feeding assembly comprises a main feeding pipe (11) and a medicament injection pipe (13); coal slime water is input to the one end of main pan feeding pipe (11), and the other end is as the output of pan feeding subassembly, the middle part of main pan feeding pipe (11) includes reducing section (12), the medicament draws and penetrates pipe (13) equipartition in the suddenly department that contracts of reducing section (12) to be linked together with suddenly department that contracts.

3. A multi-product rakeless thickening device according to claim 1, wherein the flow directing assembly further comprises a bubble directing plate (25), the bubble directing plate (25) being disposed above the outlet of the dispersion flow guide plate (23).

4. A multi-product rake-free concentration device according to claim 3, wherein the foam-removing area is connected with the inner side surface of the central trough body (21) through a plurality of connecting rods (32), and the end part of the foam-guiding plate (25) close to the connecting rods (32) is connected with the bottom of the foam-removing area and is kept in a sealed state.

5. The rakeless concentrated device for multi-product of claim 1, wherein the first diversion sedimentation screen comprises two side edge plates (321), a first diversion area is enclosed by a lower plate body (320), the lower plate body (320) is communicated with a first underflow discharge pipe (331) below the lower plate body through a first discharge valve (332), and a high plate (322) and a low plate (323) are alternately arranged between the two side edge plates (321).

6. A rakeless concentrated device for multi-products according to claim 5, wherein the upper plate (322) and the lower plate (323) are provided with a protruding and expanding spoiler (324) on opposite sides.

7. The multi-product rake-free concentrating device according to claim 5, wherein the clean coal collecting assembly further comprises a flow guiding settling zone arranged behind the foam extinguishing zone, the flow guiding settling zone comprises a second flow guiding settling sieve and a magnetic gathering sprayer, the second flow guiding settling sieve is arranged between the foam extinguishing zone and the center of the central tank body (21), the second flow guiding settling sieve and the first flow guiding settling sieve in the foam extinguishing zone are integrated, and the magnetic gathering sprayer is arranged above the second flow guiding settling sieve.

8. The rakeless concentrating device for the multi-product according to claim 7, wherein the magnetism gathering sprayer comprises a first magnetism gathering injection pipe (351), a first magnetic powder feeding pipe (352) and a first material distributor (353), the upper end of the first magnetism gathering injection pipe (351) is communicated with a jet flow feeding pipe (22) in the feeding assembly, the lower end of the first magnetism gathering injection pipe is communicated with the first material distributor (353), one end of the first magnetic powder feeding pipe (352) is connected with a pipeline at a magnetic powder supply position, and the other end of the first magnetism gathering injection pipe (351) is communicated with the first magnetism gathering injection pipe.

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