Coal float-and-sink separation apparatus

Abstract

The present application relates to the technical field of coal preparation, in particular to a coal float-and-sink separation equipment. The coal float-and-sink separation equipment comprises a machine body, a plurality of separation medium storage barrels, a separation mechanism and a conveying mechanism. The separation mechanism comprises a separation pool. The separation medium storage barrels store separation medium, and the density of the separation medium stored in each separation medium storage barrel is different. The machine body is divided into two layers, the separation medium storage barrels are arranged in the lower layer of the machine body, and the separation mechanism is arranged in the upper layer of the machine body. The conveying mechanism sequentially conveys the separation medium to the separation pool according to the density of the separation medium from high to low to realize multi-stage separation, shorten the test steps, and reduce the workload. The separation medium storage barrels are arranged in the lower layer of the machine body, which can greatly reduce the volume of the equipment and the space occupied by the equipment.

Description

Technical Field

[0001] This invention relates to the field of coal preparation technology, specifically to a coal flotation and sedimentation separation device. Background Technology

[0002] The coal float-sink test utilizes Archimedes' principle to separate coals with different relative densities using suspensions of heavy media with varying densities. Through this test, the yield and quality characteristics of different density grades can be determined, revealing the coal's washability. This provides a technical basis for designing coal washing plants, determining sorting methods, process flows, and equipment requirements.

[0003] Coal flotation and sinking separation equipment generally includes a separation tank, a density liquid tank, a desliming screen, and a desliming screen. The density liquid tank stores the separation medium, which is used for flotation and sinking tests. During the test, the desliming screen removes mud and scale from the surface of the coal sample. The separation medium in the density liquid tank is transported to the separation tank through a pipeline system. Coal samples with a density greater than that of the separation medium sink, while those with a density less than that of the separation medium float. The coal sample that has sunk into the separation tank is then sent to the desliming screen to remove magnetite powder and coal slime adhering to the surface of the coal.

[0004] Test apparatus for buoyancy and sinking tests generally includes a separation tank and a density liquid tank. The density liquid tank is used to prepare the separation medium, which is then used for the buoyancy and sinking test. During the test, the separation medium in the prepared tank is transported to the separation tank, and the coal that sinks into the separation tank is retrieved. However, existing test apparatuses require manual preparation of the separation medium for each test, cannot perform multi-density separation, resulting in cumbersome test procedures, a large workload, high production costs, and significant space occupation, leading to large equipment size and low overall operating efficiency. Summary of the Invention

[0005] (I) The problem to be solved by the present invention is that the existing test device requires manual preparation of sorting medium for each test, which makes it impossible to perform multi-density sorting, resulting in complicated test steps, large workload, high production cost, and occupying most of the space, resulting in large equipment size and low overall operating efficiency.

[0006] (II) Technical Solution

[0007] A coal flotation and sinking separation device includes a body, multiple separation medium storage tanks, a separation mechanism and a conveying mechanism, wherein the separation mechanism includes a separation pool;

[0008] The sorting medium storage tank contains sorting medium, and the density of the sorting medium stored in each sorting medium storage tank is different.

[0009] The machine body is divided into two layers, and a plurality of sorting medium storage barrels are arranged in the lower layer of the machine body, and the sorting mechanism is arranged in the upper layer of the machine body.

[0010] The conveying mechanism is connected with the sorting pool and the sorting medium storage barrel respectively, and the conveying mechanism can convey the sorting medium between the sorting pool and the sorting medium storage barrel.

[0011] According to an embodiment of the present application, the sorting pool is provided with a liquid inlet, and the conveying mechanism conveys the sorting medium from the liquid inlet to the sorting pool.

[0012] According to an embodiment of the present application, the coal float-and-sink sorting device further comprises a blowing device, the lower end of the sorting medium storage barrel is provided with a liquid outlet pipe, and the blowing device is connected with the liquid outlet pipe and the conveying mechanism respectively.

[0013] According to an embodiment of the present application, the conveying mechanism comprises an internal circulation assembly, the first end of the internal circulation assembly is connected with the liquid outlet pipe of the sorting medium storage barrel, and the 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.

[0014] According to an embodiment of the present application, the conveying mechanism further comprises a replenishing assembly and a suspension liquid inlet and outlet assembly, the replenishing assembly is connected with the sorting medium storage barrel, and is used for replenishing the sorting medium in the sorting medium storage barrel;

[0015] The suspension liquid inlet and outlet assembly is connected with the internal circulation assembly, the replenishing assembly and the sorting pool respectively, and the suspension liquid inlet and outlet assembly is used for conveying the sorting medium in the internal circulation assembly to the sorting pool or returning the sorting medium in the sorting pool to the sorting medium storage barrel.

[0016] According to an embodiment of the present application, the sorting mechanism further comprises a desliming screen, a medium removal screen and a weighing mechanism, the sorting pool, the desliming screen, the medium removal screen and the weighing mechanism are arranged in the upper layer of the machine body in sequence, the machine body is provided with a coal sample discharge port, and the discharge end of the weighing mechanism is close to the coal sample discharge port.

[0017] According to an embodiment of the present application, the desliming screen and the medium removal screen are respectively provided with a first high-pressure flushing structure and a second high-pressure flushing structure.

[0018] The coal float-and-sink sorting device further comprises a water replenishing assembly, and the water replenishing assembly is connected with the replenishing assembly, the first high-pressure flushing structure and the second high-pressure flushing structure respectively.

[0019] According to one embodiment of the present application, the medium draining screen is provided with a water draining outlet connected with a plant area recovery pipeline.

[0020] According to one embodiment of the present application, the replenishing assembly comprises a replenishing main pipe, a plurality of replenishing branch pipes and a plurality of replenishing valve bodies, the plurality of sorting medium storage barrels are connected with the replenishing main pipe through the replenishing branch pipes, each of the replenishing branch pipes is provided with a replenishing valve body, one end of the replenishing main pipe is connected with the suspension liquid inlet and outlet assembly, and a second pinch valve is installed at the connection position of the replenishing main pipe and the suspension liquid inlet and outlet assembly.

[0021] According to one embodiment of the present application, the inner circulation assembly comprises a circulation pump, an inlet pipe and an outlet pipe, the inlet of the circulation pump is connected with the lower end of the sorting medium storage barrel through the inlet pipe, and the outlet of the circulation pump is connected with the upper end of the sorting medium storage barrel through the outlet pipe; a first knife gate valve is installed on the inlet pipe, and a first pinch valve is installed on the outlet pipe.

[0022] The suspension liquid inlet and outlet assembly comprises a connected conveying pipe and an interface pipe, the outlet pipe of the inner circulation assembly is connected with the conveying pipe through a connecting branch pipe, each of the connecting branch pipes is provided with a third knife gate valve, the connecting branch pipe is located between the first pinch valve and the circulation pump, one end of the interface pipe is connected with one end of the replenishing main pipe, a second pinch valve is installed at the connection position of the interface pipe and the replenishing main pipe, and at least one liquid conveying pipeline is connected between the interface pipe and the sorting pool.

[0023] The coal floating and sinking separation equipment provided by the present application comprises a machine body, a plurality of sorting medium storage barrels, a sorting mechanism and a conveying mechanism, the sorting mechanism comprises a sorting pool, the sorting medium storage barrels store sorting medium, the density of the sorting medium stored in each sorting medium storage barrel is different, the machine body is divided into upper and lower two layers, the sorting medium storage barrels are arranged in the lower layer of the machine body, the sorting mechanism is arranged in the upper layer of the machine body, the conveying mechanism is connected with the sorting pool and the sorting medium storage barrels, and the conveying mechanism can convey the sorting medium between the sorting pool and the sorting medium storage barrels.

[0024] During the floating and sinking test, the conveying mechanism conveys the sorting medium in one of the sorting medium storage barrels to the sorting pool to separate the material, and after the separation, the sorting medium storage barrel conveys the sorting medium in the sorting pool back to the corresponding sorting medium storage barrel. In addition, the conveying mechanism conveys the sorting medium to the sorting pool in sequence according to the density of the sorting medium from high to low to realize multi-stage separation, shorten the test steps and reduce the workload.

[0025] The body is divided into upper and lower layers, the plurality of sorting medium storage barrels are arranged in the lower layer of the body, and the sorting mechanism is arranged on the upper layer of the body, so that the volume of the equipment can be greatly reduced, the space occupied by the equipment is reduced, and the length of the conveying mechanism can be controlled, thereby saving the cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and the drawings can also be obtained by those skilled in the art without creative effort.

[0027] Figure 1 The first perspective view provided for the embodiment of the present application;

[0028] Figure 2 The second perspective view provided for the embodiment of the present application;

[0029] Figure 3 The structure view after removing the shell provided for the embodiment of the present application;

[0030] Figure 4 The first perspective view of the sorting medium storage barrel, the internal circulation assembly, the replenishment assembly, the suspension liquid inlet and outlet assembly, the water replenishment assembly and the air blowing device provided for the embodiment of the present application;

[0031] Figure 5 The second perspective view of the sorting medium storage barrel, the internal circulation assembly, the replenishment assembly, the suspension liquid inlet and outlet assembly, the water replenishment assembly and the air blowing device provided for the embodiment of the present application;

[0032] Figure 6 The first perspective view of the internal circulation assembly, the replenishment assembly and the suspension liquid inlet and outlet assembly provided for the embodiment of the present application;

[0033] Figure 7 The second perspective view of the internal circulation assembly, the replenishment assembly and the suspension liquid inlet and outlet assembly provided for the embodiment of the present application;

[0034] Figure 8 The structure view of the internal circulation assembly and part of the suspension liquid inlet and outlet assembly provided for the embodiment of the present application;

[0035] Figure 9 The structure view of the replenishment assembly and the water replenishment assembly provided for the embodiment of the present application;

[0036] Figure 10 The structure view of the sorting medium storage barrel and the air blowing device provided for the embodiment of the present application;

[0037] Figure 11A structural diagram of the desliming screen provided for the embodiment of the present application;

[0038] Figure 12 A structural diagram of the desliming screen provided for the embodiment of the present application;

[0039] Figure 13 A structural diagram of the weighing mechanism provided for the embodiment of the present application;

[0040] Figure 14 A structural diagram of the fishing device provided for the embodiment of the present application.

[0041] Icon: 1-machine frame; 101-housing; 102-coal sample discharge port; 2-desliming screen; 201-feeding port; 202-vibration motor; 203-grid sieve plate; 204-first high-pressure flushing structure; 3-sorting pool; 301-main body frame; 302-sorting groove pool; 303-deceleration motor; 304-driving chain sprocket; 305-coal sample scraper; 306-driven chain set; 307-chain tensioner; 308-feeding slot; 4-desliming screen; 401-drainage mesh port; 402-second high-pressure flushing structure; 403-drainage outlet; 5-weighing mechanism; 501-belt weighing conveyor; 502-baffle; 503-driving motor; 6-sorting medium storage barrel; 601-density meter; 602-ultrasonic radar; 7-internal circulation assembly; 701-circulation pump; 702-liquid inlet pipe; 703-sewage pipe; 704-first knife gate valve; 705-second knife gate valve; 706-liquid outlet pipe; 707-first pinch valve; 8-supply assembly; 801-supply main pipe; 802-supply branch pipe; 803-supply valve body; 804-second pinch valve; 805-overflow pipe; 806-third pinch valve; 9-suspension liquid inlet and outlet assembly; 901-conveying pipe; 902-third knife gate valve; 903-elliptical pipe joint; 904-joint pipe; 905-joint; 10-blowing device; 1001-blowing pipe; 1002-first blowing branch pipe; 1003-first blowing valve; 1004-second blowing branch pipe; 1005-second blowing valve; 11-water supply assembly; 1101-water supply pipe; 1102-first water supply branch pipe; 1103-second water supply branch pipe. DETAILED DESCRIPTION

[0042] The technical solutions of the present application will be described clearly and completely in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0043] As Figures 1-14As shown, one embodiment of the present application provides a coal float-and-sink separation device, which comprises a machine body, a plurality of separation medium storage barrels 6, a separation mechanism and a conveying mechanism. The separation mechanism comprises a separation tank 3. The separation medium storage barrels 6 store separation medium, and the density of the separation medium stored in each separation medium storage barrel 6 is different. The machine body is divided into an upper layer and a lower layer. The plurality of separation medium storage barrels 6 are arranged in the lower layer of the machine body, and the separation mechanism is arranged in the upper layer of the machine body. The conveying mechanism is connected to the separation tank 3 and the separation medium storage barrels 6, and can convey the separation medium between the separation tank 3 and the separation medium storage barrels 6.

[0044] The float-and-sink device provided in the embodiment can convey the separation medium in one of the separation medium storage barrels 6 to the separation tank 3 to separate the material when the float-and-sink test is performed. After the separation is completed, the separation medium storage barrels 6 can convey the separation medium in the separation tank 3 back to the corresponding separation medium storage barrels 6. In addition, the conveying mechanism can convey the separation medium to the separation tank 3 in order from high to low density to realize multi-stage separation.

[0045] In the embodiment, the machine body is divided into an upper layer and a lower layer, the plurality of separation medium storage barrels 6 are arranged in the lower layer of the machine body, and the separation mechanism is arranged in the upper layer of the machine body. Therefore, the volume of the device can be greatly reduced, the space occupied by the device can be reduced, and the length of the conveying mechanism can be controlled, thereby saving costs.

[0046] The float-and-sink device provided in the embodiment comprises a machine body, a plurality of separation medium storage barrels 6, a separation mechanism and a conveying mechanism. The separation medium storage barrels 6 are used to store separation medium. The separation medium can be heavy medium suspension, zinc chloride solution or other solutions. In the embodiment, the separation medium is heavy medium suspension, which is a mixture of magnetite powder, coal slime and water and has no corrosive property.

[0047] It should be noted that the densities of the separation medium in the plurality of separation medium storage barrels 6 are different to meet the requirements of different densities of the separation medium in the float-and-sink test of coal.

[0048] The density of the sorting medium in the sorting medium storage barrel 6 in the embodiment is arranged in a gradient, such as 1.8 kg / L, 1.7 kg / L, 1.6 kg / L, 1.5 kg / L, and 1.4 kg / L. The conveying mechanism is used to convey the storage liquid in the sorting medium storage barrel 6 into the sorting pool 3 in order of density from high to low. For example, the conveying mechanism first conveys the sorting medium with a density of 1.8 kg / L into the sorting pool 3. Then, the coal sample is input into the sorting pool 3. The coal with a density less than 1.8 kg / L will float on the surface of the sorting medium, and the coal with a density greater than 1.8 kg / L will sink to the bottom of the sorting pool 3. Then, the coal sample sunk to the bottom of the sorting pool 3 is fished out by the fishing assembly. Then, the conveying mechanism conveys the sorting medium with a density of 1.8 kg / L back into the sorting medium storage barrel 6 for storing the sorting medium with a density of 1.8 kg / L. Then, the sorting medium with a density of 1.7 kg / L is input into the sorting pool 3. By repeatedly performing the above process, the multi-stage sorting is realized until the sorting of all the coal samples is completed, and the test is completed.

[0049] By sequentially conveying the sorting medium into the sorting pool 3 in order of density from high to low, the accuracy of the test result is ensured, and the two coal samples with different densities but both higher than the density of the sorting medium are prevented from being mixed and fished out of the sorting pool 3 by the fishing assembly.

[0050] Since the plurality of sorting medium storage barrels 6 for storing the sorting medium are arranged, compared with the prior art, it is not necessary to manually prepare the sorting medium each time, the participation of the person in the float-and-sink test is reduced, the accuracy of the float-and-sink test result is improved, the automatic multi-density sorting is realized, the test steps are simple, and the workload and production cost are reduced.

[0051] Preferably, the float-and-sink device provided by the embodiment is as shown in Figure 2 and Figure 3 The plurality of sorting medium storage barrels 6 are arranged in the lower layer of the machine body, the sorting mechanism is arranged in the upper layer of the machine body, the bottom of the sorting pool 3 is provided with a liquid inlet, and the conveying mechanism conveys the sorting medium into the sorting pool 3 from the liquid inlet. Arranging the sorting medium storage barrels 6 in the lower layer can greatly reduce the volume of the equipment and the space occupied by the equipment.

[0052] Preferably, as shown in Figure 4 The coal float-and-sink sorting equipment further comprises a blowing device 10. The lower end of the sorting medium storage barrel 6 is provided with a liquid outlet pipe. The blowing device 10 is connected to the liquid outlet pipe and the conveying mechanism in communication. The blowing device 10 blows high-pressure gas into the liquid outlet pipe below the sorting medium storage barrel 6 to generate bubbles in the sorting medium storage barrel 6, which helps to circulate the suspension and prevent the suspension from settling.

[0053] Preferably, as shown in Figure 4 and Figure 5As shown, the conveying mechanism comprises an inner circulation assembly 7, a first end of the inner circulation assembly 7 being connected with the liquid outlet of the sorting medium storage barrel 6, and a second end of the inner circulation assembly 7 being connected with the top of the sorting medium storage barrel 6, the inner circulation assembly 7 being used for circulating the sorting medium in the sorting medium storage barrel 6.

[0054] The sorting medium in the sorting medium storage barrel 6 is circulated by the inner circulation assembly 7, so that the sorting medium in the sorting medium storage barrel 6 continuously exits from the liquid outlet at the bottom of the sorting medium storage barrel 6 and enters the sorting medium storage barrel 6 from the top of the sorting medium storage barrel, so as to impact and stir the sorting medium in the sorting medium storage barrel 6, so that the sorting medium in the sorting medium storage barrel 6 is uniform, the density of the sorting medium is uniform, and precipitation is prevented.

[0055] Preferably, as shown in the drawings, Figures 5-9 As shown, the conveying mechanism further comprises a replenishing assembly 8 and a suspension inlet and outlet assembly 9, the replenishing assembly 8 being connected with the sorting medium storage barrel 6 and being used for replenishing the sorting medium in the sorting medium storage barrel 6, and the suspension inlet and outlet assembly 9 being connected with the inner circulation assembly 7, the replenishing assembly 8 and the sorting pool 3 respectively, the suspension inlet and outlet assembly 9 being used for conveying the sorting medium in the inner circulation assembly 7 to the sorting pool 3 or returning the sorting medium in the sorting pool 3 to the sorting medium storage barrel 6.

[0056] When conveying the sorting medium to the sorting pool 3, the sorting medium is first extracted by the inner circulation assembly 7, the sorting medium is then conveyed to the suspension inlet and outlet assembly 9 by the inner circulation assembly 7, and the sorting medium is then conveyed to the sorting pool 3 by the suspension inlet and outlet assembly 9 for sorting. After the completion of the first sorting step, the sorting medium in the sorting pool 3 is conveyed to the replenishing assembly 8 by the suspension inlet and outlet assembly 9, and the sorting medium is then returned to the sorting medium storage barrel 6 by the replenishing assembly 8.

[0057] In this way, the inner circulation assembly 7 can not only circulate the suspension, but also pump the suspension in the sorting medium storage barrel 6 to the suspension inlet and outlet assembly 9, so that the suspension inlet and outlet assembly 9 can convey the suspension to the sorting pool 3, and the suspension inlet and outlet assembly 9 does not need to be provided with a pump body. The replenishing assembly 8 can not only actively replenish the suspension to the sorting medium storage barrel 6, but also receive the returned suspension from the suspension inlet and outlet assembly 9 and replenish the suspension to the sorting medium storage barrel 6. The replenishing assembly 8, the inner circulation assembly 7 and the suspension inlet and outlet assembly 9 are used in cooperation, so that the length of the pipeline is shortened and one pipeline is used for multiple purposes.

[0058] In the embodiment, the replenishing assembly 8, the inner circulation assembly 7 and the suspension inlet and outlet assembly 9 are integrated in the pipeline, so that the number of pipelines is reduced, one pipeline is used for multiple purposes, the size of the equipment is reduced, and the operation efficiency of the equipment is improved.

[0059] Preferably, the sorting mechanism further comprises a desliming screen 2, a desliming screen 4 and a weighing mechanism 5, the sorting pool 3, the desliming screen 2, the desliming screen 4 and the belt weighing conveyor 501 are arranged in sequence 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.

[0060] Specifically, the desliming screen 2, the sorting pool 3, the desliming screen 4 and the weighing mechanism 5 are arranged in a back-to-back shape, which saves space and reduces the floor area occupied by the equipment. The discharge end of the desliming screen 2 is located above the sorting pool 3, the coal slime outlet of the sorting pool 3 is located above the feed end of the desliming screen 4, and the discharge port of the desliming screen 4 is located above the weighing mechanism 5, and the discharge end of the weighing mechanism 5 is close to the coal sample discharge port 102.

[0061] Specifically, the desliming screen 2 has a coal sample inlet and a coal sample outlet, the outlet of the conveying belt of the coal preparation production line of the coal preparation plant is located above the coal sample inlet of the desliming screen 2, and in use, the coal sample on the coal preparation production line of the coal preparation plant is directly delivered to the conveying belt, and the coal sample is conveyed to the desliming screen 2 at the end of the conveying belt through the conveying belt. The coal sample inlet of the desliming screen 2 is located below the end of the conveying belt, and the coal sample from the coal preparation production line of the coal preparation plant is directly fed into the desliming screen 2 through the coal sample inlet, the desliming screen 2 removes the dirt on the surface of the coal sample, and the coal sample outlet of the desliming screen 2 is located directly above the sorting pool 3, and the sorting pool 3 is provided with an open mouth, and the coal sample is directly fed into the sorting pool 3 after the dirt is removed by the desliming screen 2.

[0062] Preferably, as shown in the Figure 1 machine body comprises a machine frame 1 and a shell 101, the sorting medium storage barrel 6 and the circulating pump 701 are installed at the lower end of the machine frame 1, and the desliming screen 2, the sorting pool 3, the desliming screen 4 and the weighing mechanism 5 are installed at the upper end of the machine frame 1, the shell 101 is arranged on the side of the machine frame 1, and a plurality of switch doors are arranged on the shell 101, so that the circulating pump 701 inside can be easily maintained.

[0063] Further, as shown in the Figure 14 fishing equipment is arranged in the sorting pool 3, and the fishing equipment comprises a coal sample scraper 305, a transmission assembly and a driving piece. The sorting pool 3 comprises a main body frame 301 and a sorting groove pool 302, the sorting groove 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, the sorting groove pool 302 is provided with a feeding slot 308, the driving piece is in transmission connection with the coal sample scraper 305 through the transmission assembly, and the driving piece drives the coal sample scraper 305 to scrape the material to the discharge port.

[0064] In the embodiment, the driving member is a speed reducer 303, the transmission assembly includes a driving chain sprocket 304 and a driven chain set 306, the driving chain sprocket 304 is driven to rotate by the speed reducer 303, thereby driving the driven chain set 306 to rotate, so that the coal sample scrapers 305 on the driving chain sprocket 304 and the coal sample scrapers 305 on the driven chain set 306 move, thereby scraping the coal sinking to the bottom of the separation tank 3 to the discharge port. The transmission assembly further includes a chain tensioner 307 for adjusting the tightness of the driven chain set 306.

[0065] In use, after the separation is completed, the speed reducer 303 is started, the coal sample scrapers 305 located at the bottom of the separation tank 3 are moved by the transmission assembly, the coal sample scrapers 305 move along the bottom wall of the separation tank 3, and then move upward along the side wall of the separation tank 3, and the material is moved to the discharge port under the action of the coal sample scrapers 305.

[0066] In the embodiment, one of the side walls of the separation tank 3 is inclined to facilitate the scraping of the coal sample scrapers 305. In addition, in order to ensure that the material is not leaked, the width of the coal sample scrapers 305 needs to be equal to the width of the separation tank 3. One of the side walls of the separation tank 3 is inclined, that is, the cross section of the separation tank 3 perpendicular to the coal sample scrapers 305 is trapezoidal, and the discharge port is formed at the end of the inclined side wall. In use, the coal sample scrapers 305 move along the bottom wall and the inclined side wall of the separation tank 3, and the material in the separation tank 3 is scraped to the discharge port.

[0067] Preferably, the coal sample scrapers 305 are arranged in a plurality of rows, and the coal sample scrapers 305 in each row are arranged in a plurality of columns. Figure 13 The weighing mechanism 5 is used to measure the weight of the coal. By measuring the weight of the coal sample of different densities, subsequent processes such as ash burning or other tests can be facilitated.

[0068] Optionally, the weighing mechanism 5 is a belt weighing conveyor 501, which includes a baffle 502 and a transmission motor 503, the structure, principle and use method of which are known in the art, and will not be described here.

[0069] Preferably, the desliming screen 2 and the medium screen 4 are respectively provided with a first high-pressure washing structure 204 and a second high-pressure washing structure 402, and the coal floating and sinking separation equipment further includes a water supplement assembly 11 connected with the supply assembly 8, the first high-pressure washing structure 204 and the second high-pressure washing structure 402.

[0070] The first high-pressure washing structure 204 is used to wash away the dirt on the surface of the coal sample on the desliming screen 2, and the second high-pressure washing structure 402 is used to wash away the magnetite powder and coal slime attached to the surface of the coal sample.

[0071] The coal floating and sinking separation equipment further includes a water supplement assembly 11, which is connected with the supply assembly 8, the first high-pressure washing structure 204 and the second high-pressure washing structure 402. Figure 8As shown, the water replenishment component 11 is connected to the water supply component 8, the first high-pressure flushing structure 204, and the second high-pressure flushing structure 402, respectively.

[0072] In this way, the water supply component 11 can supply water to the first high-pressure flushing structure 204, thereby washing away the mud and dirt on the surface of the coal sample on the desliming screen 2, and can supply water to the second high-pressure flushing structure 402, thereby washing away the magnetite powder and coal sludge attached to the surface of the coal sample. Finally, water can also be input into the supply component 8, and then flow from the supply component 8 into the sorting medium storage tank 6 to replenish the sorting medium storage tank 6 and adjust the density of the sorting medium.

[0073] Preferred, such as Figure 12 As shown, the desliming screen 4 includes a vibrating motor, a drainage screen 401, a second high-pressure washing structure 402, and a drainage outlet 403. The vibrating motor drives the desliming screen 4 to vibrate, and the second high-pressure washing structure 402 washes the surface of the coal, separating the magnetite powder and coal slurry adhering to the coal surface from the coal. The magnetite powder, coal slurry, and water flow from the drainage screen 401 into the drainage outlet 403 and are discharged. The drainage outlet 403 is connected to the plant's recycling pipeline for the recovery of wastewater, waste liquid, magnetite powder, and coal slurry. After subsequent treatment, the magnetite powder is finally recovered. The screen can be a long tube with multiple nozzles arranged along its length.

[0074] Preferred, such as Figure 11 As shown, the desliming screen 2 includes a feed inlet 201, a mesh screen plate 203, a first high-pressure flushing structure 204, and an excitation motor 202. The excitation motor 202 drives the mesh screen plate 203 to vibrate. The first high-pressure flushing structure 204 is installed on the side of the desliming screen 2 to flush the coal sample. Specifically, the first high-pressure flushing structure 204 can be a long tube with multiple nozzles arranged along the length of the tube. The mud and dirt on the surface of the coal sample are washed away by the first high-pressure flushing structure 204.

[0075] Preferably, since the sorting medium storage tank 6 is located below the sorting pool 3, the sorting medium automatically flows into the suspension inlet / outlet component 9 under the influence of gravity, and further flows back from the suspension inlet / outlet component 9 to the replenishment component 8 under the action of inertia and impact force, and finally replenishes the sorting medium storage tank 6 from the replenishment component 8. This eliminates the need for a separate pump body and saves electricity.

[0076] Preferably, a funnel-shaped flow channel is formed at the lower end of the sorting medium storage tank 6, and a liquid outlet is formed at the bottom end of the flow channel. A high-pressure air port is provided on the inner wall of the flow channel. The blower 10 is connected to the high-pressure air port. The blower 10 blows high-pressure gas into the high-pressure air port to generate bubbles, which helps the suspension to circulate and prevents the suspension from settling.

[0077] In addition, the blower 10 is connected to the suspension inlet / outlet assembly 9, so that high-pressure gas can enter the suspension inlet / outlet assembly 9 and then enter the internal circulation assembly 7 and the replenishment assembly 8 to backwash the suspension inlet / outlet assembly 9, the replenishment assembly 8 and the internal circulation assembly 7, and clean up the residue in the pipeline.

[0078] Preferred, such as Figure 10 As shown, three sorting medium storage tanks 6 are provided, each equipped with a densitometer 601 and an ultrasonic radar 602. The densitometer 601 detects the density of the sorting medium within the storage tank 6, while the ultrasonic radar 602 detects the liquid level of the sorting medium. By using the densitometer 601 to monitor the density of the sorting medium, it is determined whether the density in the storage tank 6 is within a preset value, facilitating timely adjustments and ensuring sorting accuracy. By using the ultrasonic radar 602 to monitor the liquid level of the sorting medium, it is possible to determine whether the liquid level in the storage tank 6 has reached a preset value, thus facilitating timely replenishment of the sorting medium and timely cessation of water replenishment or replenishment of the sorting medium.

[0079] Optionally, the ultrasonic radar 602 can be replaced with a level gauge.

[0080] Optionally, the number of sorting media storage tanks 6 can be flexibly adjusted as needed, for example, six or eight.

[0081] Preferred, such as Figure 5 and Figure 6 As shown, there are three internal circulation components 7. Each internal circulation component 7 includes a circulation pump 701, an inlet pipe 702, and an outlet pipe 706. The inlet of the circulation pump 701 is connected to one end of the inlet pipe 702, and the other end of the inlet pipe 702 is connected to the lower end of the sorting medium storage tank 6. The outlet of the circulation pump 701 is connected to the upper end of the sorting medium storage tank 6 through the outlet pipe 706. A first knife gate valve 704 is installed on the inlet pipe 702, and a first clamp valve 707 is installed on the outlet pipe 706.

[0082] By activating the circulation pump 701, the first knife gate valve 704, and the first pinch valve 707, the circulation pump 701 pumps the sorting medium in the sorting medium storage tank 6 into the inlet pipe 702, and then returns it to the sorting medium storage tank 6 from the outlet pipe 706, completing a complete cycle. This generates a certain impact and stirring effect on the sorting medium in the sorting medium storage tank 6, making the sorting medium in the sorting medium storage tank 6 uniform and ensuring that the density of the sorting medium is uniform.

[0083] Optionally, a drain pipe is also connected to the inlet pipe 702, and a second gate valve 705 is installed on the sewage pipe 703. The suspension needs to be replaced periodically after a certain period of use, so a sewage pipe 703 is set up. When discharging the old sorting medium, the circulation pump 701, the first gate valve 704 and the second gate valve 705 are turned on, and then the first clamp valve 707 is closed, and the sewage enters the sewage pipe 703 for discharge.

[0084] Preferred, such as Figure 6 and Figure 7 As shown, the supply assembly 8 includes a main supply pipe 801, three supply branch pipes 802, and three supply valve bodies 803. One end of the main supply pipe 801 is the supply inlet for the sorting medium, and the other end is connected to the suspension inlet / outlet assembly 9. The three supply branch pipes 802 are installed sequentially on the main supply pipe 801. The first supply branch pipe 802 is connected to the first sorting medium storage tank 6, the second supply branch pipe 802 is connected to the third sorting medium storage tank 6, and the third supply branch pipe 802 is connected to the second sorting medium storage tank 6. Each supply branch pipe 802 is equipped with a supply valve body 803.

[0085] It should be noted that the main supply pipe 801 is connected to the suspension supply equipment in the heavy media workshop, thereby supplying suspension to the main supply pipe 801.

[0086] The sorting medium is pumped into the sorting medium supply inlet at one end of the main supply pipe 801. Then, the supply valves 803 on the three supply branch pipes 802 are selectively opened to supply the sorting medium into the sorting medium storage tank 6. The supply valves 803 can be opened simultaneously to supply the sorting medium into the three sorting medium storage tanks 6 at the same time, or the sorting medium can be supplied into the three sorting medium storage tanks 6 sequentially. The specific settings can be flexibly configured.

[0087] It should be noted that a solenoid valve is also installed on the main supply pipe 801. The solenoid valve is located between the sorting medium supply inlet and the first supply branch pipe 802. When the suspension flows back from the sorting tank 3 to the main supply pipe 801, the solenoid valve is closed. The suspension can only flow from the supply branch pipe 802 into the sorting medium storage tank 6, and will not flow to the supply inlet of the main supply pipe 801.

[0088] Preferred, such as Figure 7 , Figure 8 and Figure 9 As shown, the suspension inlet / outlet assembly 9 includes a delivery pipe 901, a bend joint 903, and an interface pipe 904 connected in sequence. The first end of the delivery pipe 901 is connected to the outlet pipe 706 of the first circulation pump 701, and its other end is connected to the bend joint 903. Figure 7Specifically, the left end of the delivery pipe 901 is connected to the outlet pipe 706 of the first circulation pump 701, and its right end is connected to the elbow joint 903. One end of the interface pipe 904 is connected to the elbow joint 903, and its other end is connected to the main supply pipe 801.

[0089] Furthermore, the outlet pipes 706 of the remaining two circulation pumps 701 are connected to the delivery pipe 901 via pipes. For ease of description, the pipe between the second circulation pump 701 and the delivery pipe 901 is referred to as the first pipe, and the pipe between the third circulation pump 701 and the delivery pipe 901 is referred to as the second pipe. A third knife gate valve 902 is installed at the end of the first pipe, the second pipe, and the end of the delivery pipe 901 that connects to the outlet pipe 706 of the first circulation pump 701. Specifically, the left end of the delivery pipe 901... The connection point between the first pipe and the outlet pipe 706 of the first circulation pump 701 is located between the outlet end of the first circulation pump 701 and the first clamp valve 707. The connection point between the first pipe and the outlet pipe 706 of the second circulation pump 701 is located between the outlet end of the second circulation pump 701 and the first clamp valve 707 on the second circulation pump 701. The connection point between the second pipe and the outlet pipe 706 of the third circulation pump 701 is located between the outlet end of the third circulation pump 701 and the first clamp valve 707 on the third circulation pump 701.

[0090] Furthermore, a second clamp valve 804 is installed at the connection between the interface pipe 904 and the main supply pipe 801. Multiple interfaces 905 are provided on the interface pipe 904, and pipes are installed on the interfaces 905. The other end of the pipes is connected to the sorting tank 3.

[0091] When conveying the sorting medium into the sorting pool 3, the first knife gate valve 704 on the circulating pump 701 needs to be opened, the second knife gate valve 705 needs to be closed, the first clamp valve 707 needs to be closed, and then the corresponding third knife gate valve 902 needs to be opened and the second clamp valve 804 needs to be closed. The circulating pump 701 draws the sorting medium from the sorting medium storage tank 6 into the conveying pipe 901. The sorting medium further enters the interface pipe 904 and then flows into the sorting pool 3 from the pipe on the interface 905, completing the replenishment of the sorting medium into the sorting pool 3.

[0092] Optionally, a gate valve is installed at the bend joint 903 to shut off the bend joint 903, so that the sorting medium does not enter the bend joint 903 when the sorting medium is returned.

[0093] In addition, after the sorting operation of the sorting pool 3 is completed, the three third knife gate valves 902 or the gate valve on the bend joint 903 is closed, the second clamp valve 804 is opened, the solenoid valve on the main supply pipe 801 is closed, and the supply valve body 803 on the supply branch pipe 802 is opened accordingly. Since the sorting pool 3 is located above the sorting medium storage tank 6, under the action of gravity, the sorting medium in the sorting pool 3 naturally flows to the pipe on the interface 905 and then to the interface pipe 904. Due to the action of inertia and impact force, the sorting medium further flows from the interface pipe 904 to the main supply pipe 801, and then from the main supply pipe 801 to the supply branch pipe 802 and finally to the corresponding sorting medium storage tank 6.

[0094] It should be noted that if the sorting medium in the first sorting medium storage tank 6 is transported to the sorting pool 3, then after the sorting work in the sorting pool 3 is completed, only the supply valve 803 on the supply branch pipe 802 connected to the first sorting medium storage tank is opened, while the other two supply valves 803 are closed, so that the sorting medium in the first sorting medium storage tank 6 flows back into the first sorting medium storage tank 6.

[0095] Optional, such as Figure 5 As shown, the interface pipe 904 is orifice-shaped and consists of four interconnected pipes: two first circular pipes and two second circular pipes. Both ends of the two first circular pipes are sealed. The two first circular pipes are symmetrically arranged, and the two second circular pipes are symmetrically connected between the two first circular pipes to form an orifice shape. One of the first circular pipes is connected to the bend connector 903, and the other first circular pipe is connected to the main supply pipe 801. Each of the two second circular pipes is provided with three interfaces 905, for a total of six interfaces 905. This can increase the conveying efficiency of the sorting medium.

[0096] Preferred, such as Figure 7 As shown, an overflow pipe 805 is connected to the main supply pipe 801. The other end of the overflow pipe 805 is connected to the sorting tank 3. The overflow pipe 805 is located between the third supply branch pipe 802 and the second clamp valve 804. A third clamp valve 806 is installed on the overflow pipe 805.

[0097] Optionally, a tee is connected between one end of the second clamp valve 804 and the main supply pipe 801, and the other opening of the tee is connected to the overflow pipe 805.

[0098] Specifically, a level gauge is installed in the sorting tank 3. When sorting medium is added to the sorting tank 3, and then coal samples are transported into the sorting tank 3, as the amount of coal samples gradually increases, the liquid level will gradually rise until it is about to overflow. At this time, the third clamp valve 806 on the overflow pipe 805 can be opened, the second clamp valve 804 and the solenoid valve on the main supply pipe 801 can be closed, and the supply valve body 803 on the corresponding supply branch pipe 802 can be opened. The overflowing sorting medium in the sorting tank 3 will flow from the overflow pipe 805 to the main supply pipe 801, and finally flow into the corresponding sorting medium storage tank 6, thus avoiding the waste of sorting medium caused by overflowing the sorting tank 3.

[0099] Preferred, such as Figure 10 As shown, the blower device 10 includes a blower pipe 1001, three first blower branch pipes 1002 and one second blower branch pipe 1004 connected to each other. The three first blower branch pipes 1002 are respectively connected between the blower pipe 1001 and the three sorting medium storage tanks 6, and the second blower branch pipe 1004 is connected between the blower pipe 1001 and the conveying pipe 901. A first blower valve 1003 and a second blower valve 1005 are respectively installed on the first blower branch pipes 1002 and the second blower branch pipes 1004.

[0100] A high-pressure air inlet is provided on the inner wall of the flow channel at the lower end of the sorting medium storage tank 6. The first blower branch pipe 1002 is connected to the high-pressure air inlet. The blower device 10 blows high-pressure gas into the high-pressure air inlet through the first blower branch pipe 1002 to generate bubbles, which helps the suspension to circulate. The high-pressure gas can enter the conveying pipe 901 and then enter the internal circulation component 7 and the replenishment component 8 to backwash the suspension inlet / outlet component 9, the replenishment component 8 and the internal circulation component 7.

[0101] Preferred, such as Figure 9 As shown, the water replenishment component 11 includes a water replenishment pipe 1101, a first water replenishment branch pipe 1102, and a second water replenishment branch pipe 1103. One end of the water replenishment pipe 1101 is a water inlet, and the other end is connected to the second high-pressure flushing structure 402 on the desliming screen 4. The second water replenishment branch pipe 1103 is connected between the water replenishment pipe 1101 and the replenishment component 8. The first water replenishment branch pipe 1102 is connected between the water replenishment pipe 1101 and the first high-pressure flushing structure 204. Valves are installed at the outlets of the first water replenishment branch pipe 1102, the second water replenishment branch pipe 1103, and the water replenishment pipe 1101.

[0102] During sorting, the valve on the first water supply branch pipe 1102 is opened, the valve at one end of the water supply pipe 1101 is opened, and then the valve on the second water supply branch pipe 1103 is closed. Water flows from the first water supply branch pipe 1102 into the first high-pressure flushing structure 204 on the desliming screen 2, and simultaneously, water flows from one end of the water supply pipe 1101 to the second high-pressure flushing structure 402 on the desliming screen 4. The water supply component 11 can supply water to the first high-pressure flushing structure 204, thereby washing away the mud and scale on the surface of the coal sample on the desliming screen 2, and can supply water to the second high-pressure flushing structure 402, thereby washing away the magnetite powder and coal slime adhering to the surface of the coal sample.

[0103] When it is necessary to adjust the water supply to the sorting medium storage tank 6, close the valve on the first water supply branch pipe 1102, close the valve at one end of the water supply pipe 1101, open the solenoid valve on the main supply pipe 801, close the second clamp valve 804 and the third clamp valve 806, and then open the corresponding supply valve body 803. Water flows from the second water supply branch pipe 1103 into the supply branch pipe 802, and then from the corresponding supply branch pipe 802 into the corresponding sorting medium storage tank 6, thereby replenishing the sorting medium storage tank 6 with water and adjusting the density of the sorting medium. The water supply component 11 is multi-purpose, capable of supplying water to the desliming screen 2 and the demediuming screen 4, and also replenishing water to the sorting medium storage tank 6. Moreover, the water supply component 11 sends water into the supply component 8, and then the supply component 8 is used for water replenishment, shortening the pipeline and saving costs.

[0104] Optionally, in this embodiment, the flotation device includes a control system. The control system is connected to the densitometer 601, the ultrasonic radar 602, and various valves on the pipeline system. The density of the sorting medium in the sorting medium storage tank 6 monitored by the densitometer 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. The control system controls the various valves to operate in conjunction.

[0105] Optionally, a sorting medium circulation mechanism is provided in the sorting tank 3. The sorting medium circulation mechanism includes a conveying pump. The inlet of the conveying pump is connected to the outlet at the top of the sorting tank 3 through a pipe, and the outlet of the conveying pump is connected to the inlet at the bottom of the sorting tank 3 through a pipe. The sorting medium circulation mechanism circulates the sorting medium in the sorting tank 3, so that the sorting medium in the sorting tank 3 continuously leaves the sorting tank 3 from the outlet and enters the sorting tank 3 again through the inlet at the bottom of the sorting tank 3. This can also generate a certain impact and stirring effect on the sorting medium in the sorting tank 3, so that the sorting medium in the sorting tank 3 is uniform, avoids the sedimentation of coal slime and magnetite powder, and ensures the accuracy of the sorting results.

[0106] The flotation and settling device provided in this embodiment of the invention, taking a heavy medium suspension as the sorting medium, is used as follows: First, the prepared heavy medium suspensions of different densities (a mixture of magnetite powder, coal slime, and water) are respectively placed into the corresponding sorting medium storage tanks 6. Simultaneously, the internal circulation component 7 is activated to circulate the suspension, preventing the magnetite powder and coal slime from settling. Taking the sorting medium densities of 1.8 kg / L, 1.6 kg / L, and 1.4 kg / L in the three sorting medium storage tanks 6 as an example, the device first opens the first gate valve 704 on the corresponding circulation pump 701, closes the second gate valve 705, and closes the first clamp valve 707. Then, the corresponding third gate valve 902 is opened and the second clamp valve 804 is closed. The corresponding circulation pump 701 then pumps the 1.8 kg / L heavy medium suspension from the sorting medium storage tank 6. The 1.8 kg / L heavy medium suspension, taken into the conveying pipe 901, further enters the interface pipe 904 and then flows into the sorting tank 3 through the pipe on the interface 905. Simultaneously, the coal sample from the coal preparation plant, after being deslimed by the desliming screen 2, is fed into the sorting tank 3. Coal with a density higher than 1.8 kg / L begins to sink to the bottom of the sorting tank 3. The retrieval equipment scrapes the coal sample that has sunk to the desliming screen 4, which then operates to separate the coal sample from the coal slime and magnetite powder. Once all coal with a density higher than 1.8 kg / L has sunk to the bottom of the sorting tank 3, the retrieval equipment stops operating. Immediately afterwards, close the three third-stage gate valves 902 or the gate valve on the bend joint 903, open the second clamp valve 804, close the solenoid valve on the main supply pipe 801, and correspondingly open the supply valve body 803 on the sorting medium storage tank 6 containing a heavy medium suspension with a density of 1.8 kg / L. Since the sorting tank 3 is located above the sorting medium storage tank 6, under the action of gravity, the 1.8 kg / L heavy medium suspension in the sorting tank 3 naturally flows to the pipe from the interface 905 into the interface pipe 904. Due to inertia and impact force, the 1.8 kg / L heavy medium suspension... The heavy medium suspension with a density of g / L further flows from the interface pipe 904 to the main supply pipe 801, then from the main supply pipe 801 to the branch supply pipe 802, and finally flows to the separation medium storage tank 6 containing the heavy medium suspension with a density of 1.8 kg / L. At the same time, preparations are made to switch to a separation medium with a density of 1.6 kg / L. The separation medium with a density of 1.6 kg / L is injected into the separation tank 3. The above process is repeated until all coal samples with densities greater than 1.6 kg / L, greater than 1.4 kg / L, and less than 1.4 kg / L are separated.

[0107] In the description of this invention, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0108] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0109] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coal flotation and sinking separation device, characterized in that, It includes a body, multiple sorting medium storage tanks (6), a sorting mechanism and a conveying mechanism, wherein the sorting mechanism includes a sorting pool (3); The sorting medium storage tank (6) stores sorting medium, and the density of the sorting medium stored in each sorting medium storage tank (6) is different. The machine body is divided into upper and lower layers. Multiple sorting medium storage tanks (6) are built into the lower layer of the machine body, and the sorting mechanism is installed in the upper layer of the machine body. The conveying mechanism is connected to the sorting pool (3) and the sorting medium storage tank (6) respectively, and the conveying mechanism can convey the sorting medium between the sorting pool (3) and the sorting medium storage tank (6); the conveying mechanism includes an internal circulation component (7), a replenishment component (8) and a suspension inlet / outlet component (9); the first end of the internal circulation component (7) is connected to the outlet pipe of the sorting medium storage tank (6), and the second end of the internal circulation component (7) is connected to the top of the sorting medium storage tank (6), and the internal circulation component (7) is used to circulate the sorting medium in the sorting medium storage tank (6); the replenishment component (8) is connected to the sorting medium storage tank (6) and is used to replenish the sorting medium in the sorting medium storage tank (6); the suspension inlet / outlet component (9) is connected to the internal circulation component (7) respectively. The replenishment component (8) is connected to the sorting tank (3). The suspension inlet / outlet component (9) is used to transport the sorting medium in the internal circulation component (7) to the sorting tank (3) or to return the sorting medium in the sorting tank (3) to the sorting medium storage tank (6). The replenishment component (8) includes a main replenishment pipe (801), multiple replenishment branch pipes (802) and multiple replenishment valve bodies (803). Multiple sorting medium storage tanks (6) are connected to the main replenishment pipe (801) through replenishment branch pipes (802). Each replenishment branch pipe (802) is equipped with a replenishment valve body (803). One end of the main replenishment pipe (801) is connected to the suspension inlet / outlet component (9). A second clamp valve (804) is installed at the connection between the main replenishment pipe (801) and the suspension inlet / outlet component (9).

2. The coal flotation and sinking separation equipment according to claim 1, characterized in that, The bottom of the sorting pool (3) is provided with a liquid inlet, and the conveying mechanism conveys the sorting medium from the liquid inlet into the sorting pool (3).

3. The coal flotation and sinking separation equipment according to claim 1, characterized in that, The coal floating and sinking separation equipment also includes a blower (10), and the lower end of the separation medium storage tank (6) has a liquid outlet pipe. The blower (10) is connected to the liquid outlet pipe and the conveying mechanism respectively.

4. The coal flotation and sinking separation equipment according to claim 1, characterized in that, The sorting mechanism also includes a desliming screen (2), a desliming screen (4), and a weighing mechanism (5). The sorting pool (3), the desliming screen (2), the desliming screen (4), and the weighing mechanism (5) are arranged sequentially on the upper layer of the machine body. A coal sample outlet (102) is installed on the machine body. The discharge end of the weighing mechanism (5) is close to the coal sample outlet (102).

5. The coal flotation and sinking separation equipment according to claim 4, characterized in that, The desliming screen (2) and the desliming screen (4) are respectively equipped with a first high-pressure flushing structure (204) and a second high-pressure flushing structure (402). The coal floating and sinking separation equipment also includes a water replenishment component (11), which is connected to the supply component (8), the first high-pressure flushing structure (204), and the second high-pressure flushing structure (402).

6. The coal flotation and sinking separation equipment according to claim 5, characterized in that, The desliming screen (4) is provided with a drainage outlet (403), which is connected to the plant's recycling pipeline.

7. The coal flotation and sinking separation equipment according to claim 1, characterized in that, The internal circulation component (7) includes a circulation pump (701), an inlet pipe (702), and an outlet pipe (706). The inlet of the circulation pump (701) is connected to the lower end of the sorting medium storage tank (6) through the inlet pipe (702), and the outlet of the circulation pump (701) is connected to the upper end of the sorting medium storage tank (6) through the outlet pipe (706). A first knife gate valve (704) is installed on the inlet pipe (702), and a first clamp valve (707) is installed on the outlet pipe (706). The suspension inlet / outlet assembly (9) includes a delivery pipe (901) and an interface pipe (904) connected together. The outlet pipe (706) of the internal circulation assembly (7) is connected to the delivery pipe (901) through a connecting branch pipe. A third knife gate valve (902) is installed on each connecting branch pipe. The connecting branch pipe is located between the first pinch valve (707) and the circulation pump (701). One end of the interface pipe (904) is connected to one end of the main supply pipe (801). A second pinch valve (804) is installed at the connection between the interface pipe (904) and the main supply pipe (801). At least one delivery pipe is connected between the interface pipe (904) and the sorting tank (3).

Images