CN116251663B - A coal flotation and sinking separation device - Google Patents

Abstract

The invention relates to the technical field of coal dressing, in particular to coal floating and sinking separation equipment. The invention provides coal floating and sinking separation equipment which comprises a machine body, a plurality of separation medium storage barrels, a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation pool, separation mediums are stored in the separation medium storage barrels, the density of the separation mediums stored in each separation medium storage barrel is different, the machine body is divided into an upper layer and a lower layer, the separation medium storage barrels are arranged in the lower layer of the machine body, and the separation mechanism is arranged on the upper layer of the machine body. The conveying mechanism sequentially conveys the sorting media into the sorting pool from high to low according to the density of the sorting media, multi-stage sorting is achieved, the testing steps are shortened, the workload is reduced, a plurality of sorting media storage barrels are arranged in the lower layer of the machine body, the volume of equipment can be reduced to a great extent, and the space occupied by the equipment is reduced.

Description

Coal sink-float separation equipment

Technical Field

The invention relates to the technical field of coal dressing, in particular to coal floating and sinking separation equipment.

Background

The coal float and sink test is a test for distinguishing coal with different relative densities by using Archimedes principle and using dense medium suspensions with different relative densities. Through a floating and sinking test, the yield and quality characteristics of different density levels can be obtained, and the selectivity of coal is known, so that technical basis is provided for determining a separation method, a process flow, equipment requirements and the like for the design of a coal washery.

The coal floating and sinking separation equipment generally comprises a separation tank, a density liquid barrel, a desliming screen, a medium-removing screen and other structures, wherein separation media are stored in the density liquid barrel and used for floating and sinking tests, when the tests are carried out, the desliming screen is used for removing mud on the surface of a coal sample, the separation media in the density liquid barrel are conveyed into the separation tank through a pipeline system, the coal sample with the density greater than that of the separation media is sunk, the coal sample with the density less than that of the separation media is floated, and then coal sunk into the separation tank is fished and sent into the medium-removing screen to remove magnet mineral powder and coal slime attached to the surface of the coal.

The test device for carrying out the floating and sinking test generally comprises structures such as a separation tank, a density liquid barrel and the like, wherein the density liquid barrel is used for preparing separation media, the separation media are used for carrying out the floating and sinking test, and during the test, the separation media in the modulation barrel are conveyed into the separation tank, and coal which is sunk into the separation tank is fished out. However, the existing test device needs to be manually provided with a sorting medium during each test, and cannot perform multi-density sorting, so that the test steps are complicated, the workload is large, the production cost is high, most of space is occupied, the volume of the equipment is large, and the overall operation efficiency of the equipment is low.

Disclosure of Invention

The invention solves the problems that the existing test device needs to be manually provided with a sorting medium when each test is performed, and multi-density sorting cannot be performed, so that the test steps are complicated, the workload is high, the production cost is high, most of the space is occupied, the volume of the equipment is large, and the overall operation efficiency of the equipment is low.

(II) technical scheme

The coal floating and sinking separation equipment comprises a machine body, a plurality of separation medium storage barrels, a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation tank;

Sorting media are stored in the sorting media storage barrels, and the density of the sorting media stored in each sorting media storage barrel is different;

the machine body is divided into an upper layer and a lower layer, a plurality of sorting medium storage barrels are arranged in the lower layer of the machine body, and the sorting mechanism is arranged on the upper layer of the machine body;

the conveying mechanism is respectively communicated with the sorting pool and the sorting medium storage barrel, and can convey sorting medium between the sorting pool and the sorting medium storage barrel.

According to one embodiment of the invention, the bottom of the separation tank is provided with a liquid inlet, and the conveying mechanism conveys separation media from the liquid inlet into the separation tank.

According to one embodiment of the invention, the coal floating and sinking separation device further comprises a blowing device, a liquid outlet pipe is arranged at the lower end of the separation medium storage barrel, and the blowing device is respectively communicated with the liquid outlet pipe and the conveying mechanism.

According to one embodiment of the invention, the conveying mechanism comprises an internal circulation assembly, a first end of the internal circulation assembly is connected with a liquid outlet pipe of the sorting medium storage barrel, a second end of the internal circulation assembly is connected with the top of the sorting medium storage barrel, and the internal circulation assembly is used for circulating the sorting medium in the sorting medium storage barrel.

According to one embodiment of the invention, the conveying mechanism further comprises a replenishing assembly and a suspension inlet and outlet assembly, wherein the replenishing assembly is communicated with the sorting medium storage barrel and is used for replenishing the sorting medium into the sorting medium storage barrel;

The suspension inlet and outlet assembly is respectively communicated with the internal circulation assembly, the replenishing assembly and the sorting tank, and the suspension inlet and outlet assembly is used for conveying sorting media in the internal circulation assembly into the sorting tank or refluxing the sorting media in the sorting tank into the sorting media storage barrel.

According to one embodiment of the invention, the sorting mechanism further comprises a desliming screen, a desliming screen and a weighing mechanism, wherein the sorting pool, the desliming screen and the weighing mechanism are sequentially arranged on the upper layer of the machine body, a coal sample discharging port is arranged on the machine body, and the discharging end of the weighing mechanism is close to the coal sample discharging port.

According to one embodiment of the invention, a first high-pressure flushing structure and a second high-pressure flushing structure are respectively arranged on the desliming screen and the medium-stripping screen;

The coal sink-float separation equipment further comprises a water supplementing assembly, and the water supplementing assembly is respectively connected with the water supplementing assembly, the first high-pressure flushing structure and the second high-pressure flushing structure.

According to one embodiment of the invention, the medium removing sieve is provided with a drainage outlet, and the drainage outlet is connected with a factory recovery pipeline.

According to one embodiment of the invention, the replenishing assembly comprises a replenishing main pipe, a plurality of replenishing branch pipes and a plurality of replenishing valve bodies, wherein the plurality of sorting medium storage barrels are communicated with the replenishing main pipe through the replenishing branch pipes, each replenishing branch pipe is provided with the replenishing valve body, one end of the replenishing main pipe is communicated with the suspension inlet and outlet assembly, and a second pinch valve is arranged at the joint of the replenishing main pipe and the suspension inlet and outlet assembly.

According to one embodiment of the invention, the internal circulation assembly comprises a circulation pump, a liquid inlet pipe and a liquid outlet pipe, wherein a liquid inlet of the circulation pump is communicated with the lower end of the sorting medium storage barrel through the liquid inlet pipe, and a liquid outlet of the circulation pump is communicated with the upper end of the sorting medium storage barrel through the liquid outlet pipe;

The suspension business turn over subassembly is including conveyer pipe and the interface pipe that are connected, the internal circulation subassembly the drain pipe with be connected through the connecting branch pipe between the conveyer pipe, every all install the third knife gate valve on the connecting branch pipe, the connecting branch pipe is located first pinch valve with between the circulating pump, the one end of interface pipe with the one end that the supply was responsible for is connected, the interface pipe with the second pinch valve is installed to the junction that the supply was responsible for, the interface pipe with be connected with an infusion pipeline at least between the sorting pond.

The coal floating and sinking separation equipment has the beneficial effects that the coal floating and sinking separation equipment comprises a machine body, a plurality of separation medium storage barrels, a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation pond, separation mediums are stored in the separation medium storage barrels, the density of the separation mediums stored in each separation medium storage barrel is different, the machine body is divided into an upper layer and a lower layer, the separation medium storage barrels are arranged in the lower layer of the machine body, the separation mechanism is arranged on the upper layer of the machine body, the conveying mechanism is respectively communicated with the separation pond and the separation medium storage barrels, and the conveying mechanism can convey the separation mediums between the separation pond and the separation medium storage barrels.

When a floating test is carried out, the conveying mechanism conveys the sorting medium in one of the sorting medium storage barrels into the sorting pool for sorting materials, and after sorting is completed, the sorting medium storage barrel conveys the sorting medium in the sorting pool back into the corresponding sorting medium storage barrel. And the conveying mechanism sequentially conveys the sorting media into the sorting pool from high to low according to the density of the sorting media, so that multi-stage sorting is realized, the test steps are shortened, and the workload is reduced.

Because the organism divide into upper and lower two-layer, a plurality of separation medium storage barrels are built-in the lower floor of organism, and separation mechanism installs in the upper strata of organism, can reduce the volume of equipment to a great extent, reduces the space that equipment occupy, and conveying mechanism's length can be controlled, has saved the cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a first perspective view of an embodiment of the present invention;

FIG. 2 is a second perspective view of an embodiment of the present invention;

FIG. 3 is a block diagram of the embodiment of the invention after the shell is removed;

FIG. 4 is a first perspective view of a sorting media storage bucket, an internal circulation assembly, a replenishment assembly, a suspension inlet and outlet assembly, a replenishment assembly, and a blower device according to an embodiment of the present invention;

FIG. 5 is a second perspective view of a sorting media storage bucket, an internal circulation assembly, a replenishment assembly, a suspension inlet and outlet assembly, a replenishment assembly, and a blower device provided in an embodiment of the present invention;

FIG. 6 is a first perspective view of an internal circulation assembly, a replenishment assembly, and a suspension inlet and outlet assembly provided in accordance with an embodiment of the present invention;

FIG. 7 is a second perspective view of an internal circulation assembly, a replenishment assembly and a suspension inlet and outlet assembly provided in accordance with an embodiment of the present invention;

FIG. 8 is a block diagram of an internal circulation assembly and a portion of a suspension inlet and outlet assembly provided in an embodiment of the present invention;

FIG. 9 is a block diagram of a refill assembly and a refill assembly according to an embodiment of the present invention;

FIG. 10 is a block diagram of a sorting media storage bucket and blower apparatus provided in an embodiment of the present invention;

FIG. 11 is a block diagram of a desliming screen provided by an embodiment of the present invention;

FIG. 12 is a block diagram of a stripping screen according to an embodiment of the present invention;

FIG. 13 is a block diagram of a weighing mechanism provided by an embodiment of the present invention;

fig. 14 is a block diagram of a fishing device according to an embodiment of the present invention.

Icon 1-machine frame; 101-a housing; 102-coal sample discharge port, 2-desliming screen, 201-feed port, 202-exciting motor, 203-grid screen plate, 204-first high pressure flushing structure, 3-sorting pool, 301-main frame, 302-sorting tank, 303-reducing motor, 304-driving chain sprocket, 305-coal sample scraper, 306-driven chain group, 307-chain tensioner, 308-feed slot, 4-desliming screen, 401-drainage screen port, 402-second high pressure flushing structure, 403-drainage outlet, 5-weighing mechanism, 501-belt weighing conveyor, 502-baffle plate, 503-driving motor, 6-sorting medium storage bucket, 601-densitometer, 602-ultrasonic radar, 7-internal circulation assembly, 701-circulation pump, 702-feed pipe, 703-sewage pipe, first knife gate valve, 705-second knife gate valve, 706-liquid pipe, 706-first pinch valve, 8-pinch valve, 801-makeup pipe, 802-feed branch pipe, 804-second gate valve, 402-second pinch valve, 402-third pinch valve, 805-third pinch valve, third pinch valve, 805-joint-805-third pinch valve, 11-joint-805-10-third joint-11-joint-10-35, third-joint-805-11-third-joint-35 Water pipe 1102-first water supplementing branch pipe 1103-second water supplementing branch pipe.

Detailed Description

The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-14, one embodiment of the invention provides a coal floating and sinking separation device, which comprises a machine body, a plurality of separation medium storage barrels 6, a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation tank 3, separation mediums are stored in the separation medium storage barrels 6, the separation medium density stored in each separation medium storage barrel 6 is different, the machine body is divided into an upper layer and a lower layer, the separation medium storage barrels 6 are arranged in the lower layer of the machine body, the separation mechanism is arranged on the upper layer of the machine body, the conveying mechanism is respectively communicated with the separation tank 3 and the separation medium storage barrels 6, and the conveying mechanism can convey the separation mediums between the separation tank 3 and the separation medium storage barrels 6.

In the floating and sinking device provided in this embodiment, when performing the floating and sinking test, the conveying mechanism conveys the sorting medium in one of the sorting medium storage barrels 6 to the sorting tank 3 for sorting the materials, and after sorting is completed, the sorting medium storage barrels 6 convey the sorting medium in the sorting tank 3 back to the corresponding sorting medium storage barrel 6. And, the said conveying mechanism conveys the said sorting medium to the said sorting pond 3 sequentially and sorts according to the order from high to low of the density of the sorting medium, realize the multistage sorting.

In this embodiment, the organism divide into upper and lower two-layer, and a plurality of sorting medium storage barrels 6 are built-in the lower floor of organism, and sorting mechanism installs in the upper strata of organism, can reduce the volume of equipment to a great extent, reduces the space that equipment occupy, and conveying mechanism's length can be controlled, has saved the cost.

The floating device provided by the embodiment comprises a machine body, a plurality of sorting medium storage barrels 6, a sorting mechanism and a conveying mechanism. The sorting medium storage barrel 6 is used for storing a sorting medium, and the sorting medium can be a heavy medium suspension, also can be zinc chloride solution or other solutions, and in the embodiment, the sorting medium is a heavy medium suspension, and is a mixed solution of magnetite powder, coal slime and water, and the sorting medium is not corrosive.

It should be noted that the densities of the sorting media in the plurality of sorting media storage barrels 6 are all different to meet the demands of sorting media with different densities in the float and sink test process of coal.

In this embodiment, the density of the sorting medium in the sorting medium storage bucket 6 is set in a gradient, for example, 1.8kg/L, 1.7kg/L, 1.6kg/L, 1.5kg/L, 1.4kg/L, etc. The conveying mechanism is used for conveying the storage liquid in the sorting medium storage barrel 6 into the sorting tank 3 according to the order of the density from high to low, for example, the conveying mechanism firstly conveys the sorting medium with the density of 1.8kg/L into the sorting tank 3, then conveys coal samples into the sorting tank 3, coal with the density of less than 1.8kg/L floats on the surface of the sorting medium, coal with the density of more than 1.8kg/L sinks into the bottom of the sorting tank 3, then the coal samples sunk into the bottom of the sorting tank 3 are fished out through the salvaging assembly, then the conveying mechanism conveys the sorting medium with the density of 1.8kg/L back into the sorting medium storage barrel 6 with the density of 1.8kg/L, and then the sorting medium with the density of 1.7kg/L is input into the sorting tank 3, and the above processes are repeated until all the coal samples are sorted, and the test is completed, so that multi-stage sorting is realized.

The separation media are sequentially conveyed into the separation tank 3 from high to low according to the density gradient, so that the accuracy of test results is ensured, two kinds of coal samples with different densities but the densities higher than the density of the separation media are prevented from being mixed and fished out of the separation tank 3 by the salvage component.

Due to the fact that the sorting medium storage barrels 6 used for storing sorting media are arranged, compared with the prior art, sorting media do not need to be manually arranged each time, participation of people in a floating and sinking test is reduced, accuracy of a floating and sinking test result is improved, automatic multi-density sorting is achieved, test steps are simple, and workload and generation cost are reduced.

Preferably, as shown in fig. 2 and 3, the sink-float device provided in this embodiment is provided with a plurality of sorting medium storage barrels 6 arranged in a lower layer of the machine body, a sorting mechanism is arranged in an upper layer of the machine body, a liquid inlet is arranged at the bottom of the sorting tank 3, and a conveying mechanism conveys sorting mediums from the liquid inlet to the inside of the sorting tank 3, so that the sorting medium storage barrels 6 are selectively arranged in the lower layer, the volume of the equipment can be reduced to a great extent, and the space occupied by the equipment is reduced.

Preferably, as shown in fig. 4, the coal floating and sinking separation device further comprises a blowing device 10, a liquid outlet pipe is arranged at the lower end of the separation medium storage barrel 6, the blowing device 10 is respectively communicated with the liquid outlet pipe and the conveying mechanism, and high-pressure gas is blown into the separation medium storage barrel 6 towards the liquid outlet pipe below the separation medium storage barrel 6 through the blowing device 10 to generate bubbles, thereby being beneficial to the circulation of suspension liquid and preventing the suspension liquid from precipitating.

Preferably, as shown in fig. 4 and 5, the conveying mechanism comprises an inner circulation assembly 7, a first end of the inner circulation assembly 7 is connected with a liquid outlet pipe of the sorting medium storage barrel 6, a second end of the inner circulation assembly 7 is connected with the top of the sorting medium storage barrel 6, and the inner circulation assembly 7 is used for circulating the sorting medium in the sorting medium storage barrel 6.

The internal circulation assembly 7 is used for circulating the sorting media in the sorting media storage barrel 6, so that the sorting media in the sorting media storage barrel 6 continuously leave from a liquid outlet at the bottom of the sorting media storage barrel 6 and enter the sorting media storage barrel 6 from the top of the sorting media storage barrel, and a certain impact and stirring effect is generated on the sorting media in the sorting media storage barrel 6, so that the sorting media in the sorting media storage barrel 6 are uniform, the density uniformity of the sorting media is ensured, and sedimentation is prevented.

Preferably, as shown in fig. 5-9, the conveying mechanism further comprises a replenishing assembly 8 and a suspension inlet and outlet assembly 9, wherein the replenishing assembly 8 is communicated with the sorting medium storage barrel 6 and is used for replenishing the sorting medium into the sorting medium storage barrel 6, the suspension inlet and outlet assembly 9 is respectively communicated with the internal circulation assembly 7, the replenishing assembly 8 and the sorting tank 3, and the suspension inlet and outlet assembly 9 is used for conveying the sorting medium in the internal circulation assembly 7 into the sorting tank 3 or refluxing the sorting medium in the sorting tank 3 into the sorting medium storage barrel 6.

When the sorting media are conveyed into the sorting tank 3, the sorting media are firstly extracted through the internal circulation assembly 7, then the internal circulation assembly 7 conveys the sorting media into the suspension inlet and outlet assembly 9, and the suspension inlet and outlet assembly 9 conveys the sorting media into the sorting tank 3 for sorting. After the one-time sorting step is finished, the sorting media in the sorting tank 3 are conveyed to the replenishing assembly 8 through the suspension inlet and outlet assembly 9, and the sorting structure is refluxed into the sorting media storage barrel 6 through the replenishing assembly 8.

The internal circulation assembly 7 can play a role of circulating the suspension liquid and can pump the suspension liquid in the sorting medium storage barrel 6 into the suspension liquid inlet and outlet assembly 9, so that the suspension liquid inlet and outlet assembly 9 conveys the suspension liquid into the sorting tank 3, and a pump body is not required to be installed on the suspension liquid inlet and outlet assembly 9. The replenishment module 8 is capable of receiving the suspension flowing back from the suspension inlet and outlet module 9 and replenishing the suspension into the sorting medium storage tank 6 in addition to the function of actively replenishing the suspension into the sorting medium storage tank 6. The replenishing assembly 8, the internal circulation assembly 7 and the suspension inlet and outlet assembly 9 are matched with each other for use, so that the length of a pipeline is shortened, and one pipe is multipurpose.

In the embodiment, the replenishing assembly 8, the internal circulation assembly 7 and the suspension inlet and outlet assembly 9 are integrated and designed through pipelines, so that the number of pipelines is reduced, the device is multipurpose, the volume of the device is reduced, and the operation efficiency of the device is improved.

Preferably, the sorting mechanism further comprises a desliming screen 2, a desliming screen 4 and a weighing mechanism 5, wherein the sorting pool 3, the desliming screen 2, the desliming screen 4 and the belt weighing conveyor 501 are sequentially arranged on the upper layer of the machine body, the machine body is provided with a coal sample discharge port 102, and the discharge end of the weighing mechanism 5 is close to the coal sample discharge port 102.

Specifically, the desliming sieve 2, the separation pool 3, the desliming sieve 4 and the weighing mechanism 5 are arranged along a shape of a Chinese character 'hui', so that the space is saved and the occupied area of equipment is reduced. The discharge end of the desliming sieve 2 is positioned above the separation tank 3, the coal slime outlet of the separation tank 3 is positioned above the feed end of the desliming sieve 4, the discharge port of the desliming sieve 4 is positioned above the weighing mechanism 5, and the discharge end of the weighing mechanism 5 is close to the coal sample discharge port 102.

Specifically, the desliming sieve 2 has coal sample entry and coal sample export, connect the export of the conveyer belt of coal preparation production line of coal preparation factory to be located the coal sample entry of desliming sieve 2, during the use, coal sample on the coal preparation production line of coal preparation factory is directly thrown to the conveyer belt, carry the coal sample to the desliming sieve 2 departments that are located the conveyer belt terminal through the conveyer belt, the coal sample entry of desliming sieve 2 is located the below at the conveyer belt terminal, the coal sample on the coal preparation production line from coal preparation factory is directly thrown into desliming sieve 2 through the coal sample entry, the mud on desliming sieve 2 desorption coal sample surface is located the just above the separation tank 3, separation tank 3 open setting, the coal sample is directly thrown into in separation tank 3 after desliming sieve 2 desorption mud.

Preferably, as shown in fig. 1, the machine body comprises a machine frame 1 and a housing 101, a sorting medium storage tub 6 and a circulating pump 701 are installed at the lower end of the machine frame 1, a desliming screen 2, a sorting tank 3, a desliming screen 4 and a weighing mechanism 5 are installed at the upper end of the machine frame 1, the housing 101 is arranged on the side surface of the machine frame 1, and a plurality of switch doors are installed on the housing 101, so that the circulating pump 701 inside is convenient to maintain.

Further, as shown in fig. 14, a salvaging device is arranged in the separation tank 3, the salvaging device comprises a coal sample scraping plate 305, a transmission component and a driving piece, the separation tank 3 comprises a main body frame 301 and a separation tank pool 302, the separation tank pool 302 is located at one end of the main body frame 301, the driving piece is located at the other end of the main body frame 301 and is provided with the separation tank pool 302, a feeding notch 308 is formed in the side wall of the separation tank pool 302, the driving piece is in transmission connection with the coal sample scraping plate 305 through the transmission component, and the driving piece drives the coal sample scraping plate 305 to scrape materials to the discharge hole.

In this embodiment, the driving member is a gear motor 303, and the transmission assembly includes a driving chain sprocket 304 and a driven chain set 306, and the driving chain sprocket 304 is driven by the gear motor 303 to rotate so as to drive the driven chain set 306 to rotate, so that the coal sample scraper 305 on the driving chain sprocket 304 and the coal sample scraper 305 on the driven chain set 306 move, and thus the coal sunk into the bottom of the separation tank 3 is scraped to the discharge hole. The drive assembly further comprises a chain tensioner 307 for adjusting the tightness of the driven chain set 306.

When the device is used, after separation is completed, the gear motor 303 is started, the coal slime coal sample scraping plate 305 positioned at the bottom of the separation tank 3 is driven to move through the transmission assembly, the coal sample scraping plate 305 moves along the bottom wall of the separation tank 3 and then moves upwards along the side wall of the separation tank 3, and materials move to a discharge port under the action of the coal sample scraping plate 305.

In this embodiment, one of the side walls of the separation tank 3 is inclined so as to facilitate scraping by the coal sample scraper 305. In order to ensure no leakage, the width of the coal sample scraper 305 is also required to be equal to the width of the separation tank 3. One of the side walls of the separation tank 3 is obliquely arranged, namely, the section of the separation tank 3 perpendicular to the coal sample scraping plate 305 is trapezoid, and the discharge hole is formed at the end part of the obliquely arranged side wall. When in use, the coal sample scraping plate 305 moves along the bottom wall of the separation tank 3 and the side wall arranged obliquely, and scrapes the materials in the separation tank 3 to the discharge port.

Preferably, as shown in fig. 13, the weighing mechanism 5 is used to measure the weight of the coal. By measuring the weight of coal samples of different densities, subsequent processes, such as burning ash or other assays, are facilitated.

Optionally, the weighing mechanism 5 is a belt weighing conveyer 501, which includes a baffle 502 and a driving motor 503, and the structure, principle and usage thereof are well known in the art, and will not be described herein.

Preferably, the desliming screen 2 and the desliming screen 4 are respectively provided with a first high-pressure flushing structure 204 and a second high-pressure flushing structure 402, the coal floating and sinking separation equipment further comprises a water supplementing assembly 11, and the water supplementing assembly 11 is respectively connected with the supplementing assembly 8, the first high-pressure flushing structure 204 and the second high-pressure flushing structure 402.

The first high-pressure flushing structure 204 is used for flushing out mud and dirt on the surface of the coal sample on the desliming screen 2, and the second high-pressure flushing structure 402 is used for flushing out magnetite powder and coal slime attached to the surface of the coal sample.

The coal sink-float separation apparatus further includes a water replenishment assembly 11, as shown in fig. 8, the water replenishment assembly 11 being in communication with the replenishment assembly 8, the first high pressure flushing structure 204 and the second high pressure flushing structure 402, respectively.

The water supplementing assembly 11 can supply water to the first high-pressure flushing structure 204 so as to flush out the mud on the surface of the coal sample on the desliming screen 2, the second high-pressure flushing structure 402 can supply water so as to flush out magnetite powder and coal slime attached to the surface of the coal sample, and finally, the water can be input into the supplementing assembly 8 so as to flow into the sorting medium storage barrel 6 from the supplementing assembly 8, water is supplemented to the sorting medium storage barrel 6, and the density of the sorting medium is adjusted.

Preferably, as shown in fig. 12, the medium removing sieve 4 comprises a vibrating motor, a drainage net mouth 401, a second high-pressure flushing structure 402 and a drainage outlet 403, the vibrating motor drives the medium removing sieve 4 to vibrate, the second high-pressure flushing structure 402 flushes the surface of coal, so that magnetite powder and coal slime attached to the surface of the coal are separated from the coal, the magnetite powder, the coal slime and water flow into the drainage outlet 403 from the drainage net mouth 401 and are discharged, the drainage outlet 403 is butted into a factory recovery pipeline, wastewater, waste liquid, the magnetite powder and the coal slime are recovered, and the magnetite powder is finally recovered after subsequent treatment. The spray head is in a long pipe shape, and a plurality of spray heads are arranged on the long pipe along the length direction of the long pipe.

Preferably, as shown in fig. 11, the desliming screen 2 includes a feed inlet 201, a grid screen plate 203, a first high-pressure flushing structure 204 and an excitation motor 202, the excitation motor 202 drives the grid screen plate 203 to vibrate, the first high-pressure flushing structure 204 is installed at the side of the desliming screen 2 to flush coal samples, the specific first high-pressure flushing structure 204 can be long pipe-shaped, a plurality of spray heads are arranged on the long pipe along the length direction of the long pipe, and the mud and scale on the surface of the coal samples are flushed by the first high-pressure flushing structure 204.

Preferably, since the sorting medium storage barrel 6 is arranged below the sorting tank 3, sorting medium automatically flows into the suspension inlet and outlet assembly 9 under the influence of gravity, and further flows back into the replenishing assembly 8 from the suspension inlet and outlet assembly 9 under the action of inertia and impact force, and finally is replenished into the sorting medium storage barrel 6 from the replenishing assembly 8, thus a pump body is not required to be arranged independently, and electric power is saved.

Preferably, a funnel-shaped flow channel is formed at the lower end of the sorting medium storage barrel 6, a liquid outlet is formed at the bottom end of the flow channel, a high-pressure air port is arranged on the inner wall of the flow channel, the air blowing device 10 is connected with the high-pressure air port, and the air blowing device 10 blows high-pressure gas into the high-pressure air port to generate bubbles, so that circulation of suspension liquid is facilitated, and suspension liquid precipitation is prevented.

In addition, the air blower 10 is also communicated with the suspension inlet and outlet assembly 9, so that high-pressure air can enter the suspension inlet and outlet assembly 9 and then enter the inner circulation assembly 7 and the replenishing assembly 8, and backwash is carried out on the suspension inlet and outlet assembly 9, the replenishing assembly 8 and the inner circulation assembly 7, so that residues in the pipeline are cleaned.

Preferably, as shown in fig. 10, three sorting medium storage barrels 6 are provided, and one densitometer 601 and an ultrasonic radar 602 are installed in each sorting medium storage barrel 6. Wherein the densitometer 601 is used to detect the density of the sorting medium in the sorting medium storage vat 6, and the ultrasonic radar 602 is used to detect the level of the sorting medium in the sorting medium storage vat 6. By setting the densimeter 601 to monitor the density of the sorting media, whether the density of the sorting media in the sorting media storage barrel 6 is at a preset value is judged, so that timely adjustment is facilitated, and sorting accuracy is ensured. By setting the ultrasonic radar 602 to monitor the liquid level of the sorting medium, it is convenient to determine whether the liquid level of the sorting medium storage barrel 6 reaches a preset value, so that the sorting medium can be timely supplemented and the water supplementing or the sorting medium can be timely stopped.

Alternatively, the ultrasonic radar 602 may be replaced with a level gauge.

Alternatively, the number of sorting medium storage barrels 6 may be flexibly adjusted as required, for example, six or eight are provided.

Preferably, as shown in fig. 5 and 6, the internal circulation assembly 7 is provided with three, the internal circulation assembly 7 comprises a circulation pump 701, a liquid inlet pipe 702 and a liquid outlet pipe 706, the liquid inlet of the circulation pump 701 is connected with one end of the liquid inlet pipe 702, the other end of the liquid inlet pipe 702 is communicated with the lower end of the sorting medium storage barrel 6, the liquid outlet of the circulation pump 701 is communicated with the upper end of the sorting medium storage barrel 6 through the liquid outlet pipe 706, a first knife gate valve 704 is installed on the liquid inlet pipe 702, and a first pinch valve 707 is installed on the liquid outlet pipe 706.

By opening the circulation pump 701, the first knife gate valve 704 and the first pinch valve 707, the circulation pump 701 pumps the sorting media in the sorting media storage barrel 6 into the liquid inlet pipe 702 and then flows back into the sorting media storage barrel 6 again from the liquid outlet pipe 706, so that a complete circulation is completed, a certain impact and stirring effect are generated on the sorting media in the sorting media storage barrel 6, the sorting media in the sorting media storage barrel 6 are uniform, and the density of the sorting media is ensured to be uniform.

Optionally, a drain pipe is further connected to the liquid inlet pipe 702, a second knife gate valve 705 is additionally installed on the sewage pipe 703, and the suspension needs to be replaced periodically after a certain period of use, so that the sewage pipe 703 is provided, when the old sorting medium is discharged, the circulation pump 701, the first knife gate valve 704 and the second knife gate valve 705 are opened, the first pinch valve 707 is closed, and sewage enters the sewage pipe 703 and is discharged.

Preferably, as shown in fig. 6 and 7, the replenishment module 8 includes a replenishment main pipe 801, three replenishment branch pipes 802 and three replenishment valve bodies 803, one end of the replenishment main pipe 801 is a replenishment inlet for sorting media, the other end of the replenishment main pipe is communicated with the suspension inlet and outlet module 9, and the three replenishment branch pipes 802 are sequentially installed on the replenishment main pipe 801, wherein a first replenishment branch pipe 802 is communicated with a first sorting media storage tank 6, a second replenishment branch pipe 802 is communicated with a third sorting media storage tank 6, and a third replenishment branch pipe 802 is communicated with a second sorting media storage tank 6, and one replenishment valve body 803 is installed on each replenishment branch pipe 802.

It is to be understood that the replenishment main pipe 801 is connected to a suspension replenishment apparatus in a heavy-duty shop, and the suspension is replenished to the replenishment main pipe 801.

Sorting media are pumped into the sorting media supply inlet at one end of the supply main pipe 801, then the supply valve bodies 803 on the three supply branch pipes 802 are selectively opened, so that sorting media can be supplied into the sorting media storage barrels 6, the supply valve bodies 803 can be simultaneously opened, sorting media can be simultaneously supplied into the three sorting media storage barrels 6, sorting media can be sequentially supplied into the three sorting media storage barrels 6, and the sorting media can be flexibly arranged in specific cases.

It is to be noted that a solenoid valve is further provided in the replenishment main pipe 801, and is provided between the replenishment inlet of the separation medium and the first replenishment branch pipe 802, and when the suspension flows back from the separation tank 3 to the replenishment main pipe 801, the solenoid valve is closed, and the suspension can flow only from the replenishment branch pipe 802 to the replenishment medium storage tank 6, not to the replenishment inlet of the replenishment main pipe 801.

Preferably, as shown in fig. 7, 8 and 9, the suspension inlet and outlet assembly 9 comprises a delivery pipe 901, an elbow joint 903 and a mouthpiece 904 which are sequentially connected, wherein a first end of the delivery pipe 901 is connected to the outlet pipe 706 of the first circulation pump 701, the other end thereof is connected to the elbow joint 903, and according to fig. 7, a left end of the delivery pipe 901 is connected to the outlet pipe 706 of the first circulation pump 701, and a right end thereof is connected to the elbow joint 903. One end of the mouthpiece 904 is connected to the elbow 903, and the other end is connected to the replenishment main 801.

Further, the liquid outlet pipes 706 and the delivery pipes 901 of the remaining two circulation pumps 701 are all connected through pipes, for convenience of description, the pipe between the second circulation pump 701 and the delivery pipe 901 is referred to as a first pipe, the pipe between the third circulation pump 701 and the delivery pipe 901 is referred to as a second pipe, wherein one third knife gate valve 902 is installed at each of the first pipe, the second pipe and one end of the delivery pipe 901 connected with the liquid outlet pipe 706 of the first circulation pump 701, specifically, the connection between the left end of the delivery pipe 901 and the liquid outlet pipe 706 of the first circulation pump 701 is located between the liquid outlet end of the first circulation pump 701 and the first pinch valve 707, the connection between the first pipe and the liquid outlet pipe 706 of the second circulation pump 701 is located between the liquid outlet end of the second circulation pump 701 and the first pinch valve 707 on the second circulation pump 701, and the connection between the second pipe and the liquid outlet pipe 706 of the third circulation pump 701 is located between the liquid outlet end of the third circulation pump 701 and the first pinch valve 707 on the third circulation pump 701.

Further, a second pinch valve 804 is installed at the connection between the interface pipe 904 and the replenishment main pipe 801, a plurality of interfaces 905 are provided on the interface pipe 904, a pipe is installed on the interfaces 905, and the other end of the pipe is connected with the separation tank 3.

Thus, when the sorting medium is conveyed into the sorting tank 3, the first knife gate valve 704 on the circulation pump 701 is opened, the second knife gate valve 705 is closed, the first pinch valve 707 is closed, the corresponding third knife gate valve 902 is opened, the second pinch valve 804 is closed, the circulation pump 701 draws the sorting medium in the sorting medium storage barrel 6 into the conveying pipe 901, the sorting medium further enters the interface pipe 904 and then flows into the sorting tank 3 from the pipeline on the interface 905, and the sorting medium supplementing work of the sorting tank 3 is completed.

Optionally, a gate valve is mounted at elbow 903 to sever elbow 903 so that the sorting media does not enter elbow 903 when the sorting media is returned.

In addition, after one sorting operation of the sorting tank 3 is completed, the three third knife gate valves 902 or gate valves on the elbow joint 903 are closed, the second pinch valve 804 is opened, the electromagnetic valve on the replenishment main pipe 801 is closed, the replenishment valve 803 on the replenishment branch pipe 802 is correspondingly opened, and as the sorting tank 3 is arranged above the sorting medium storage bucket 6, the sorting medium in the sorting tank 3 naturally flows into the interface pipe 904 from the pipeline on the interface 905 under the action of gravity, and further flows into the replenishment main pipe 801 from the interface pipe 904 under the action of inertia and impact force, and then finally flows into the corresponding sorting medium storage bucket 6 from the replenishment main pipe 801 into the replenishment branch pipe 802.

If the sorting medium in the first sorting medium storage tank 6 is fed into the sorting tank 3, after the sorting operation in the sorting tank 3 is completed, only the replenishment valve 803 on the replenishment branch pipe 802 connected to the first sorting medium storage tank is opened, and the other two replenishment valve 803 are closed, so that the sorting medium in the first sorting medium storage tank 6 is returned to the first sorting medium storage tank 6 again.

Optionally, as shown in fig. 5, the interface tube 904 is a mouth shape, and is composed of four communicated pipes, namely two first round pipes and two second round pipes, wherein two ends of the two first round pipes are respectively in a sealed shape, the two first round pipes are symmetrically arranged, the two second round pipes are symmetrically connected between the two first round pipes to form a mouth shape, one of the first round pipes is communicated with the elbow joint 903, the other first round pipe is communicated with the supply main pipe 801, three interfaces 905 are respectively arranged on the two second round pipes, and the total of six interfaces 905 can increase the conveying efficiency of sorting media.

Preferably, as shown in fig. 7, an overflow pipe 805 is connected to the supply main pipe 801, the other end of the overflow pipe 805 is connected to the separation tank 3, the overflow pipe 805 is located between the third supply branch pipe 802 and the second pinch valve 804, and a third pinch valve 806 is installed on the overflow pipe 805.

Optionally, a tee is connected between second pinch valve 804 and one end of makeup header 801, with the other opening of the tee being connected to overflow tube 805.

Specifically, be provided with the level gauge in the separation tank 3, after the separation medium is mended in towards separation tank 3, carry the coal sample again towards separation tank 3 in, along with the volume of coal sample increases gradually, the liquid level can rise gradually until quick overflow, this moment, the accessible is opened the third pinch valve 806 on the overflow pipe 805, close the valve 803 on second pinch valve 804 and the replenishment main pipe 801 on the solenoid valve on the corresponding replenishment branch pipe 802 again, flow the separation medium that overflows in the separation tank 3 from overflow pipe 805 to the replenishment main pipe 801, finally flow into corresponding separation medium storage barrel 6 in, avoided separation medium to overflow separation tank 3 to cause the waste of separation medium.

Preferably, as shown in fig. 10, the blowing device 10 includes a blower tube 1001, three first blowing branches 1002 and one second blowing branch 1004 connected, wherein the three first blowing branches 1002 are connected between the blower tube 1001 and the three sorting medium storage tanks 6, respectively, the second blowing branch 1004 is connected between the blower tube 1001 and the delivery tube 901, and the first blowing valve 1003 and the second blowing valve 1005 are mounted on the first blowing branches 1002 and the second blowing branches 1004, respectively.

The inner wall of the flow channel at the lower end of the sorting medium storage barrel 6 is provided with a high-pressure air port, the first air blast branch pipe 1002 is connected with the high-pressure air port, the air blast device 10 blows high-pressure air into the high-pressure air port through the first air blast branch pipe 1002 to generate bubbles, circulation of suspension is facilitated, and the high-pressure air can enter the conveying pipe 901 to enter the inner circulation assembly 7 and the replenishing assembly 8, and backwash is performed on the suspension inlet and outlet assembly 9, the replenishing assembly 8 and the inner circulation assembly 7.

Preferably, as shown in fig. 9, the water replenishing assembly 11 includes a water replenishing pipe 1101, a first water replenishing branch pipe 1102 and a second water replenishing branch pipe 1103, one end of the water replenishing pipe 1101 is a water inlet, the other end of the water replenishing pipe 1101 is connected with the second high-pressure flushing structure 402 on the medium removing screen 4, the second water replenishing branch pipe 1103 is connected between the water replenishing pipe 1101 and the water replenishing assembly 8, the first water replenishing branch pipe 1102 is connected between the water replenishing pipe 1101 and the first high-pressure flushing structure 204, and valves are installed at water outlets of the first water replenishing branch pipe 1102, the second water replenishing branch pipe 1103 and the water replenishing pipe 1101.

During sorting, the valve on the first water supplementing branch pipe 1102 is opened, the valve on one end of the water supplementing pipe 1101 is opened, the valve on the second water supplementing branch pipe 1103 is closed, water flows into the first high-pressure flushing structure 204 on the desliming screen 2 from the first water supplementing branch pipe 1102, and meanwhile, water flows into the second high-pressure flushing structure 402 on the medium-removing screen 4 from one end of the water supplementing pipe 1101. The water supply assembly 11 can supply water for the first high-pressure flushing structure 204 so as to flush out the mud and the scale on the surface of the coal sample on the desliming screen 2, and the water supply assembly can supply water for the second high-pressure flushing structure 402 so as to flush out the magnetite powder and the coal slime attached to the surface of the coal sample.

When water replenishing in the sorting medium storage barrel 6 needs to be regulated, the valve on the first water replenishing branch pipe 1102 is closed, the valve at one end of the water replenishing pipe 1101 is closed, the electromagnetic valve on the replenishing main pipe 801 is opened, the second pinch valve 804 and the third pinch valve 806 are closed, the corresponding replenishing valve 803 is opened, water flows into the replenishing branch pipe 802 from the second water replenishing branch pipe 1103, and accordingly water flows into the corresponding sorting medium storage barrel 6 from the corresponding replenishing branch pipe 802, water replenishing is carried out for the sorting medium storage barrel 6, and the density of sorting mediums is regulated. The water replenishing assembly 11 is multipurpose, namely, the water can be supplied to the desliming screen 2 and the medium removing screen 4, water can be replenished to the medium separating storage barrel 6, and the water replenishing assembly 11 is used for conveying water into the replenishing assembly 8 and then replenishing water by utilizing the replenishing assembly 8, so that a pipeline is shortened, and the cost is saved.

Optionally, in this embodiment, the floating device includes a control system, where the control system is connected to the densimeter 601, the ultrasonic radar 602, and each valve on the pipeline system, the density of the sorting medium in the sorting medium storage tank 6 monitored by the densimeter 601 is fed back to the control system, the liquid level of the sorting medium in the sorting medium storage tank 6 monitored by the ultrasonic radar 602 is fed back to the control system, and the control system controls each valve to perform linkage.

Optionally, be provided with separation medium circulation mechanism in the separation tank 3, separation medium circulation mechanism includes the delivery pump, the inlet of delivery pump is connected with the liquid outlet of separation tank 3 top through the pipeline, the liquid outlet of delivery pump is connected with the inlet of separation tank 3 bottom through the pipeline, separation medium circulation mechanism makes the separation medium in the separation tank 3 produce the circulation, make the separation medium in the separation tank 3 constantly leave separation tank 3 from the liquid outlet, enter into in the separation tank 3 from the inlet of separation tank 3 bottom again, also can produce certain impact and stirring effect to the separation medium in the separation tank 3, make the separation medium in the separation tank 3 even, avoid coal slime and magnetite powder to deposit, guarantee the accuracy of separation result.

When the floating and sinking device provided by the embodiment of the invention is used, the sorting medium is taken as a heavy medium suspension liquid, firstly, the prepared heavy medium suspension liquid with different densities (which is a mixed liquid of magnetite powder, coal slime and water) is respectively filled in the corresponding sorting medium storage barrel 6, and meanwhile, the inner circulation assembly 7 is started to circulate the suspension liquid, so that the sedimentation of the magnetite powder and the coal slime is avoided. Taking the example that the density of the separation medium in the three separation medium storage barrels 6 is 1.8kg/L, 1.6kg/L and 1.4kg/L respectively, firstly, a first knife gate valve 704 on a corresponding circulation pump 701 is opened, a second knife gate valve 705 is closed, a first pinch valve 707 is closed, a corresponding third knife gate valve 902 is opened, a second pinch valve 804 is closed, the 1.8kg/L heavy medium suspension in the separation medium storage barrels 6 is pumped into a conveying pipe 901 by the corresponding circulation pump 701, the 1.8kg/L heavy medium suspension further enters an interface pipe 904 and then flows into a separation tank 3 from a pipeline on an interface 905, meanwhile, coal samples of a coal separation plant are input into the separation tank 3 after desliming by a desliming sieve 2, coal with density higher than 1.8kg/L starts to sink into the bottom of the separation tank 3, the salvaging equipment scrapes the heavy medium suspension in the bottom of the separation tank 3 to a place of the desliming sieve 4, and the desliming sieve 4 works, so that the coal samples and magnetite are separated from coal samples and powder magnetite. When all the coals with the density higher than 1.8kg/L are sunk into the bottom of the separation tank 3, the salvaging equipment stops working. Immediately after closing the three third knife gate valves 902 or gate valves on the elbow joint 903, opening the second pinch valve 804, closing the solenoid valve on the replenishment main pipe 801, and correspondingly opening the replenishment valve 803 on the sorting media storage vat 6 containing the dense medium suspension with a density of 1.8kg/L, since the sorting tank 3 is disposed above the sorting media storage vat 6, under the action of gravity, 1.8kg/L of the dense medium suspension in the sorting tank 3 naturally flows into the interface pipe 904 from the pipe on the interface 905, under the action of inertia and impact force, 1.8kg/L of the dense medium suspension further flows into the replenishment main pipe 801 from the replenishment main pipe 801 to the replenishment branch pipe 802, and finally flows into the sorting media storage vat 6 containing the dense medium suspension with a density of 1.8kg/L, while preparing to switch the sorting media with a density of 1.6kg/L into the sorting tank 3, and then repeating the above process until the density of more than 1.6kg/L, the density of more than 1.6kg/L and the density of all the coal samples of less than 1.4kg/L can be sorted.

In the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims (7)

1. The coal floating and sinking separation equipment is characterized by comprising a machine body, a plurality of separation medium storage barrels (6), a separation mechanism and a conveying mechanism, wherein the separation mechanism comprises a separation tank (3);

Sorting media are stored in the sorting media storage barrels (6), and the density of the sorting media stored in each sorting media storage barrel (6) is different;

the machine body is divided into an upper layer and a lower layer, a plurality of sorting medium storage barrels (6) are arranged in the lower layer of the machine body, and the sorting mechanism is arranged on the upper layer of the machine body;

The conveying mechanism is respectively communicated with the separation tank (3) and the separation medium storage barrel (6), the conveying mechanism can be used for conveying separation medium between the separation tank (3) and the separation medium storage barrel (6), the conveying mechanism comprises an inner circulation assembly (7), a replenishing assembly (8) and a suspension inlet and outlet assembly (9), a first end of the inner circulation assembly (7) is connected with a liquid outlet pipe of the separation medium storage barrel (6), a second end of the inner circulation assembly (7) is connected with the top of the separation medium storage barrel (6), the inner circulation assembly (7) is used for circulating the separation medium in the separation medium storage barrel (6), the replenishing assembly (8) is communicated with the separation medium storage barrel (6) and is used for replenishing the separation medium in the separation medium storage barrel (6), the suspension inlet and outlet assembly (9) is respectively communicated with the inner circulation assembly (7), the replenishing assembly (8) and the separation medium storage barrel (3), a second end of the inner circulation assembly (7) is connected with the top of the separation medium storage barrel (6), the inner circulation assembly (7) is used for circulating the separation medium in the main pipe (6) to the separation medium storage barrel (3), the replenishing assembly (8) is used for conveying the separation medium in the main pipe (801) into the separation medium storage barrel (3) or the replenishing assembly (3) and the separation medium storage barrel (6) is used for circulating the separation medium in the main pipe (801) A plurality of replenishing branch pipes (802) and a plurality of replenishing valve body (803), a plurality of sorting medium storage barrel (6) with be linked together through replenishing branch pipe (802) between replenishing main pipe (801), every replenishment valve body (803) are all installed on replenishing branch pipe (802), the one end of replenishing main pipe (801) with suspension business turn over subassembly (9) are linked together, replenishing main pipe (801) with second pinch valve (804) are installed in the junction of suspension business turn over subassembly (9).

2. The coal floating and sinking separation device according to claim 1, wherein a liquid inlet is arranged at the bottom of the separation tank (3), and the conveying mechanism conveys separation media from the liquid inlet into the separation tank (3).

3. The coal sink and float separation equipment according to claim 1, further comprising a blast device (10), wherein a liquid outlet pipe is arranged at the lower end of the separation medium storage barrel (6), and the blast device (10) is respectively communicated with the liquid outlet pipe and the conveying mechanism.

4. The coal floating and sinking separation device according to claim 1, wherein the separation mechanism further comprises a desliming screen (2), a desliming screen (4) and a weighing mechanism (5), the separation tank (3), the desliming screen (2), the desliming screen (4) and the weighing mechanism (5) are sequentially arranged on the upper layer of the machine body, a coal sample discharge port (102) is arranged on the machine body, and the discharge end of the weighing mechanism (5) is close to the coal sample discharge port (102).

5. The coal floating and sinking separation equipment according to claim 4, wherein a first high-pressure flushing structure (204) and a second high-pressure flushing structure (402) are respectively arranged on the desliming screen (2) and the medium-stripping screen (4);

the coal sink-float separation equipment further comprises a water supplementing assembly (11), and the water supplementing assembly (11) is respectively connected with the water supplementing assembly (8), the first high-pressure flushing structure (204) and the second high-pressure flushing structure (402).

6. The coal sink-float separation equipment according to claim 5, wherein the medium-removing sieve (4) is provided with a drainage outlet (403), and the drainage outlet (403) is connected with a factory recovery pipeline.

7. The coal floating and sinking separation device according to claim 1, wherein the internal circulation assembly (7) comprises a circulation pump (701), a liquid inlet pipe (702) and a liquid outlet pipe (706), wherein a liquid inlet of the circulation pump (701) is communicated with the lower end of the separation medium storage barrel (6) through the liquid inlet pipe (702), a liquid outlet of the circulation pump (701) is communicated with the upper end of the separation medium storage barrel (6) through the liquid outlet pipe (706), a first knife gate valve (704) is arranged on the liquid inlet pipe (702), and a first pinch valve (707) is arranged on the liquid outlet pipe (706);

The suspension business turn over subassembly (9) are including conveyer pipe (901) and interface pipe (904) that are connected, internal circulation subassembly (7) drain pipe (706) with be connected through connecting branch pipe between conveyer pipe (901), every connect and all install third knife gate valve (902) on the branch pipe, connect the branch pipe to be located first pinch valve (707) with between circulating pump (701), the one end of interface pipe (904) with the one end of supply main pipe (801) is connected, interface pipe (904) with the junction of supply main pipe (801) installs second pinch valve (804), interface pipe (904) with be connected with an infusion pipeline at least between sorting pond (3).