Coal particle recovery device and slime water treatment system

Abstract

The utility model relates to a coal particle recovery device and a slime water treatment system. The coal particle recovery device comprises a drainage screen, a liquid receiving tank and a dewatering screen, the drainage screen is provided with a first inlet and a first outlet, the drainage screen is provided with a first screen plate, the first inlet and the liquid receiving tank are located on the two sides of the first screen plate in the first direction, and the liquid receiving tank is provided with a liquid outlet. The second sieve plate is provided with a first end and a second end which are opposite in the second direction, the first end is opposite to the first outlet in the first direction and is adjacent to the liquid outlet relative to the second end in the first direction, and the first vibration motor is connected with the second sieve plate. According to the coal particle recovery device, coarse coal particles can be separated from centrifugal liquid, the dehydration effect of the coarse coal particles is improved, dehydrated coal particle products are prepared, the coarse coal particles can be prevented from circulating in subsequent procedures, energy consumption can be saved, and adverse effects caused by the coarse coal particles in the subsequent procedures are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of slime water treatment, in particular to a coal particle recovery device and a slime water treatment system. Background Art

[0002] The fine (medium) coal centrifuge is a commonly used secondary dehydration device in the coal washing industry. The incoming material is mainly the oversize material dehydrated by the upper medium-removing and dehydration screen for the first time. The fine (medium) coal centrifuge dehydrates the material under the action of centrifugal force. After dehydration, the dry material is transported by a conveying device, and the centrifugate finally goes to the slime water treatment system. However, in actual production, a certain amount of smaller-sized coal passes through the screen basket of the centrifuge and enters the centrifugate, resulting in losses. At the same time, the entry of smaller-sized coal into the centrifugate also increases the concentration and viscosity of the slime water. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related technologies to some extent. Therefore, an embodiment of the utility model provides a coal particle recovery device. Through the cooperation of a water-draining screen and a dehydration screen, coarse coal particles can be separated from the centrifugate, improving the dehydration effect of the coarse coal particles, preparing a dehydrated coal particle product, and avoiding the circulation of the coarse coal particles in subsequent processes. This not only saves energy consumption but also avoids the adverse effects caused by the coarse coal particles in subsequent processes.

[0004] An embodiment of the utility model provides a slime water treatment system.

[0005] The coal particle recovery device according to the embodiment of the utility model includes a water-draining screen, a liquid receiving tank, and a dehydration screen. The water-draining screen has a first inlet and a first outlet opposite to each other in a first direction. The water-draining screen is provided with a first screen plate. The included angle between the first screen plate and a second direction is 45° - 60°, and the second direction is perpendicular to the first direction. The first inlet is located on one side of the first screen plate in the first direction. The liquid receiving tank is located on the other side of the first screen plate in the first direction, and the liquid receiving tank is provided with a liquid discharge port. The dehydration screen includes a second screen plate and a first vibration motor. The second screen plate is located between the first outlet and the liquid discharge port in the first direction. The second screen plate has opposite first and second ends in the second direction. The first end is opposite to the first outlet in the first direction, and the first end is closer to the liquid discharge port than the second end in the first direction. The first vibration motor is connected to the second screen plate.

[0006] The coal particle recovery device of the utility model embodiment performs preliminary dehydration of coarse coal particles through an inclined first screen plate, and sends the coarse coal particles to the dehydration screen. The dehydration screen drives the second screen plate to vibrate through the first vibration motor, which not only drives the coal particles to vibrate and move the coal particles to the higher second end for discharge, but also performs a second dehydration during the vibration process of the coal particles. At the same time, the first end of the second screen plate is lower than the second end, which also increases the time for the coal particles to vibrate and move on the second screen plate, thereby improving the dehydration and drying effect of the coal particles.

[0007] In some embodiments, the coal particle recovery device further comprises a distribution box, and the distribution box comprises:

[0008] a box body, the box body being located on a side of the first inlet away from the liquid discharge port in the first direction, and the box body being provided with a liquid inlet and a first liquid outlet on two sides in the first direction respectively;

[0009] a plurality of buffer plates, the plurality of buffer plates are arranged at intervals in the first direction, two adjacent buffer plates are respectively arranged on both sides of the box body, and parts of the two adjacent buffer plates are opposite to each other in the first direction; and

[0010] A first liquid outlet pipe, one end of which is connected to the first liquid outlet, and the other end of which is connected to the first inlet. The other end of the first liquid outlet pipe is adjacent to the first sieve plate

[0011] In some embodiments, the buffer plate includes a first plate segment and a second plate segment, one end of the first plate segment is connected to the box body, a leakage hole is provided on the first plate segment, the other end of the first plate segment is connected to the second plate segment, and the second plate segment faces the liquid inlet.

[0012] In some embodiments, the fabric box further includes a concentration meter, which is disposed inside the box.

[0013] In some embodiments, the box body is provided with a second liquid outlet;

[0014] The material distribution box further comprises:

[0015] a first valve, wherein the first valve is arranged on the first liquid outlet pipe;

[0016] a second liquid outlet pipe, one end of which is connected to the second liquid outlet, and the other end of which is connected to the liquid receiving tank; and

[0017] A second valve is provided on the second liquid outlet pipe.

[0018] In some embodiments, the cloth bin further includes a diversion plate, which is inclined in the direction of the first sieve plate and arranged in the first liquid outlet pipe. There are a plurality of the diversion plates, and two adjacent buffer plates are respectively arranged on opposite sides of the first liquid outlet pipe.

[0019] In some embodiments, the water drainage sieve includes a second vibration motor, and the second vibration motor is connected to the first sieve plate.

[0020] In some embodiments, the water drainage sieve includes a first sieve frame and a first spraying assembly. The first sieve frame is connected to the first sieve plate. The first spraying assembly includes a first water pipe and a plurality of first nozzles. The first water pipe is arranged on the first sieve frame, and a plurality of the first nozzles are arranged on the first water pipe; and / or,

[0021] The dehydration sieve includes a second sieve frame and a second spraying assembly. The second sieve frame is connected to the second sieve plate. The second spraying assembly includes a second water pipe and a plurality of second nozzles. The second water pipe is arranged on the second sieve frame, and a plurality of second nozzles are arranged on the second water pipe.

[0022] In some embodiments, the angle between the second sieve plate and the second direction is 1° - 5°.

[0023] The coal slime water treatment system according to the embodiment of the present invention includes the coal particle recovery device described above. Description of the Drawings

[0024] Figure 1 is one of the structural schematic diagrams of the coal particle recovery device according to the embodiment of the present invention;

[0025] Figure 2 is the second structural schematic diagram of the coal particle recovery device according to the embodiment of the present invention;

[0026] Reference Signs:

[0027] Coal particle recovery device 100;

[0028] Water drainage sieve 1, first inlet 11, first outlet 12, first sieve plate 13, second vibration motor 14, first sieve frame 15, first spraying assembly 16, first nozzle 161, first water pipe 162;

[0029] Liquid receiving tank 2, liquid discharge port 21;

[0030] Dehydration sieve 3, second sieve plate 31, first end 311, second end 312, first vibration motor 32, second sieve frame 33, second spraying assembly 34, second water pipe 41, second nozzle 342;

[0031] Fabric box 4, box body 41, liquid inlet 411, buffer plate 42, first plate section 421, second plate section 422, first liquid outlet pipe 43, concentration meter 44, first valve 45, second liquid outlet pipe 46, second valve 47, diversion plate 48. Detailed implementation mode

[0032] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0033] As Figures 1 to 2 shown, the coal particle recovery device 100 of the embodiment of the present invention includes a water drainage sieve 1, a liquid receiving tank 2 and a dehydration sieve 3.

[0034] The water drainage sieve 1 has a first inlet 11 and a first outlet 12 opposite to each other in a first direction (for example Figure 1 the up and down direction in Figure 1 ). The water drainage sieve 1 is provided with a first sieve plate 13. The included angle between the first sieve plate 13 and a second direction (for example

[0035] the left and right direction in Figure 1 ) is 45° - 60°. The first inlet 11 is located on one side of the first sieve plate 13 in the first direction. The liquid receiving tank 2 is located on the other side of the first sieve plate 13 in the first direction. The liquid receiving tank 2 is provided with a liquid discharge port 21. The dehydration sieve 3 includes a second sieve plate 31 and a first vibration motor 32. The second sieve plate 31 is located between the first outlet 12 and the liquid discharge port 21 in the first direction. The second sieve plate 31 has opposite first end 311 and second end 312 in the second direction. The first end 311 is opposite to the first outlet 12 in the first direction. The first end 311 is closer to the liquid discharge port 21 than the second end 312 in the first direction. The first vibration motor 32 is connected to the second sieve plate 31.

[0036] During use, the centrifugate discharged from the centrifuge enters the drain sieve 1 from the first inlet 11. The centrifugate falls from the upper end of the first sieve plate 13 and flows towards the first sieve plate 13. Since the angle between the first sieve plate 13 and the second direction is 45° - 60°, the first sieve plate 13 has a relatively large inclination relative to the horizontal direction. On the one hand, the inclined first sieve plate 13 filters the centrifugate, screening out the coarser granular coal with a diameter larger than the sieve holes of the first sieve plate 13, and the coarser granular coal flows downward along the first sieve plate 13 under its own weight and the impact of the centrifugate, and is then discharged through the first outlet 12. On the other hand, the inclined first sieve plate 13 increases the path of the centrifugate flowing downward along the first sieve plate 13, increases the amount of liquid flowing through the first sieve plate 13, and at the same time increases the amount of liquid that can pass through the sieve holes and flow towards the liquid receiving tank 2, so that a large amount of liquid in the centrifugate can pass through the first sieve plate 13 when passing through the first sieve plate 13, enabling a large amount of liquid in the centrifugate to quickly separate from the coarse coal particles and realizing the preliminary dehydration of the coarse coal particles. The liquid flowing down from the first sieve plate 13 flows along the liquid receiving tank 2 towards the drain port 21, and the coarse coal particles screened out from the first sieve plate 13 are discharged from the first outlet 12 to the dehydration sieve 3. The first vibration motor 32 is started, and the first vibration motor 32 drives the second sieve plate 31 to vibrate. The vibration of the second sieve plate 31 drives the coarse coal particles located thereon to vibrate, causing the coarse coal particles to be gradually vibrated from a lower position to a higher position, that is, moving the coarse coal particles from the first end 311 to the second end 312, and being discharged from the second end 312 under the action of vibration. At the same time, the vibration of the second sieve plate 31 drives the coarse coal particles and the attached liquid to vibrate. Due to the different masses and densities of the coarse coal particles and the liquid water droplets, the vibration causes a velocity difference between the coarse coal particles and the liquid, thereby separating the coal particles from the liquid. The liquid is discharged from the sieve holes of the second sieve plate 31 to the liquid receiving tank 2, realizing the further dehydration of the coal particles. Moreover, during the process of the coal particles being vibrated from the first end 311 to the second end 312, there is a certain time, enabling the coal particles to have a certain vibration time, which can also improve the dehydration and drying effect of the coal particles.

[0037] The coarse coal particles discharged from the second end 312 of the dehydration sieve 3 can be recycled and reused, and the liquid discharged from the drain port 21 enters other processes for reprocessing.

[0038] The coal particle recovery device 100 of the embodiment of the present utility model preliminarily dehydrates the coarse coal particles through the inclined first sieve plate 13 and sends the coarse coal particles to the dehydration sieve 3. The dehydration sieve 3 drives the second sieve plate 31 to vibrate through the first vibration motor 32, which not only drives the coal particles to vibrate and moves the coal particles to the higher second end 312 for discharge, but also performs secondary dehydration during the vibration of the coal particles. At the same time, the first end 311 of the second sieve plate 31 is lower than the second end 312, which also increases the vibration movement time of the coal particles on the second sieve plate 31, thereby improving the dehydration and drying effect of the coal particles.

[0039] Therefore, the coal particle recovery device 100 of the embodiment of the present utility model can separate coarse coal particles from the centrifugal liquid through the cooperation of the water drainage sieve 1 and the dehydration sieve 3, improve the dehydration effect of the coarse coal particles, prepare dehydrated coal particle products, and avoid the circulation of coarse coal particles in subsequent processes. This can not only save energy consumption but also avoid the adverse effects caused by coarse coal particles in subsequent processes.

[0040] For the convenience of understanding the solution of this application, it is described by taking the first direction being the same as the up and down direction and the second direction being the same as the left and right direction as an example. Among them, the up and down direction is as Figure 1 and Figure 2 shown, the left and right direction is as Figure 1 shown, and the front and back direction is as Figure 2 shown.

[0041] The coal particle recovery device 100 of the embodiment of the present utility model includes a water drainage sieve 1, a liquid receiving tank 2, a dehydration sieve 3, and a cloth box 4.

[0042] The liquid receiving tank 2 is located below the cloth box 4, the water drainage sieve 1, and the dehydration sieve 3, and is used for receiving the liquid discharged from the first sieve plate 13 of the water drainage sieve 1, the liquid discharged from the second sieve plate 31 of the dehydration sieve 3, and the liquid discharged from the cloth box 4. A liquid discharge port 21 is provided at the lower end of the liquid receiving tank 2. After the liquid flows into the liquid receiving tank 2, it is discharged through the liquid discharge port 21.

[0043] The cloth box 4 includes a box body 41, a first liquid discharge pipe 43, and a plurality of buffer plates 42. The box body 41 is located on the side of the first inlet 11 of the water drainage sieve 1 that deviates from the liquid discharge port 21 in this first direction, that is, the box body 41 is located above the first inlet 11 of the water drainage sieve 1. Liquid inlet ports 411 and a first liquid discharge port are respectively provided on both sides of the box body 41 in this first direction, as Figure 1 shown. The liquid inlet port 411 is located above the box body 41, and the first liquid discharge port is located below the box body 41. The plurality of buffer plates 42 are arranged at intervals in this first direction. Adjacent two buffer plates 42 are respectively provided on both sides of the box body 41, and a part of adjacent two buffer plates 42 is opposite in the first direction. One end of the first liquid discharge pipe 43 is communicated with the first liquid discharge port, and the other end of the first liquid discharge pipe 43 is communicated with the first inlet 11.

[0044] The centrifugal liquid discharged from the centrifuge in the previous process enters the box body 41 through the liquid inlet port 411. During the downward flow of the centrifugal liquid, after being blocked by the buffer plates 42, it turns. Since adjacent two buffer plates 42 are respectively provided on both sides of the box body 41 and a part of adjacent two buffer plates 42 is opposite in this first direction, adjacent two buffer plates 42 can block all the liquid of the centrifugal liquid, so that after the centrifugal liquid passes through a plurality of cross-distributed buffer plates 42, the overall flow rate of the centrifugal liquid decreases, and then it is discharged to the water drainage sieve 1 through the first liquid discharge pipe 43.

[0045] The centrifugal liquid discharged from the centrifuge has a high flow rate, and multiple buffer plates 42 form a buffering and deceleration effect on the centrifugal liquid, thereby reducing the impact of the centrifugal liquid on the drainage screen 1, ensuring the flow time of the centrifugal liquid on the drainage screen 1, and ensuring the dehydration effect of the drainage screen 1 on the coarse coal particles.

[0046] In some embodiments, the buffer plate 42 includes a first plate segment 421 and a second plate segment 422, one end of the first plate segment 421 is connected to the box body 41, a leakage hole is provided on the first plate segment 421, the other end of the first plate segment 421 is connected to the second plate segment 422, and the second plate segment 422 faces the liquid inlet 411. The buffer plate 42 is "L" shaped, which can not only block the centrifugal liquid, but also requires the centrifugal liquid to accumulate a certain amount on the first plate segment 421 before flowing downward over the second plate segment 422, thereby further reducing the speed of the centrifugal liquid. In addition, the first plate segment 421 is provided with a leakage hole, which can allow particles in the liquid to pass through, avoiding the accumulation of particles in the liquid on the first plate segment 421, ensuring that the particles in the liquid flow to the drainage screen 1, thereby ensuring that the coal particle recovery device 100 of the embodiment of the utility model recovers coarser coal particles.

[0047] Specifically, Figure 1 As shown, there are two buffer plates 42. The diameter of the leakage hole is 1 mm, which can make the coal particles in the centrifugal liquid flow downward through the first plate section 421, and can also prevent excessive centrifugal liquid from flowing downward from the leakage hole, ensuring the purpose of the buffer plate 42 to reduce the overall speed of the centrifugal liquid.

[0048] In some embodiments, the material distribution box 4 further includes a guide plate 48, which is arranged in the first liquid outlet pipe 43 and is inclined in the direction of the first sieve plate 13. In other words, one end of the guide plate 48 is arranged in the first liquid outlet pipe 43, and the other end of the guide plate 48 is inclined in the direction of the first sieve plate 13. Figure 1 As shown, the other end of the guide plate 48 is inclined downward. There are multiple guide plates 48, and two adjacent buffer plates 42 are respectively arranged on opposite sides of the first liquid outlet pipe 43. When the centrifugal liquid flows downward through the guide plate 48, the guide plate 48 plays a role of blocking and guiding the liquid, which can not only further reduce the speed of the centrifugal liquid, but also prevent coal particles from accumulating on the guide plate 48.

[0049] In some embodiments, the material distribution box 4 further includes a concentration meter 44, which is arranged in the box body 41. The concentration meter 44 can detect the concentration of the centrifuge at any time. When the detected concentration data is greater than the set range value, it means that the screen basket of the centrifuge is damaged, and more coal particles are discharged with the centrifuge through the damaged screen basket and enter the buffer material distribution box 4. When the concentration data detected by the concentration meter 44 is greater than the set range value, an alarm is sounded to remind personnel to replace the screen basket, which is conducive to the normal production operation of the centrifuge.

[0050] The housing 41 is provided with a second liquid outlet, which is located at the lower end of the housing 41 and is adjacent to the first liquid outlet. The cloth box 4 further includes a first valve 45, a second liquid discharge pipe 46 and a second valve 47. The first valve 45 is arranged on the first liquid discharge pipe 43 to control the on-off of the first liquid discharge pipe 43. One end of the second liquid discharge pipe 46 is communicated with the second liquid outlet, and the other end of the second liquid discharge pipe 46 is communicated with the liquid receiving tank 2. The second valve 47 is arranged on the second liquid discharge pipe 46 to control the on-off of the second liquid discharge pipe 46. When the water drainage screen 1 and / or the dehydration screen 3 fails and needs to be repaired, the first valve 45 on the first liquid discharge pipe 43 is closed, and the second valve 47 on the second liquid discharge pipe 46 is opened, so that the centrifugal liquid is discharged from the second liquid discharge pipe 46 and directly discharged to the liquid receiving tank 2. Thus, it can be ensured that when the water drainage screen 1 and / or the dehydration screen 3 fails, the coal particle recovery device 100 of the embodiment of the present utility model can normally receive the liquid discharged from the centrifuge, avoid the shutdown of the centrifuge, and does not affect the normal production of the centrifuge, and there is no worry in use.

[0051] The water drainage screen 1 has a first inlet 11 and a first outlet 12 opposite in the first direction. The water drainage screen 1 is provided with a first screen plate 13, and the included angle between the first screen plate 13 and the second direction is 45°-60°. The first inlet 11 is located on one side (upper side) of the first screen plate 13 in the first direction, and the lower side of the first outlet 12 is the dehydration screen 3. The centrifugal liquid discharged from the first liquid discharge pipe 43 flows to the first screen plate 13, and the first screen plate 13 performs preliminary screening and dehydration on the coarser coal particles.

[0052] Specifically, the diameter of the screen holes of the first screen plate 13 is 0.2 mm. The coal particles with a diameter larger than 0.2 mm are screened out and flow to the dehydration screen 3, and the coal particles and liquid with a diameter smaller than 0.2 mm pass through the screen holes of the first screen plate 13 and flow to the liquid receiving tank 2.

[0053] Optionally, the included angle between the first screen plate 13 and the second direction is 45°, 50°, 55° or 60°. As Figure 1 shown in the embodiment, the included angle between the first screen plate 13 and the second direction is 50°. The larger inclination angle between the first screen plate 13 and the second direction is beneficial to the rapid separation of the liquid and the coal particles with smaller diameters from the coal particles with larger diameters when the centrifugal liquid passes through the first screen plate 13.

[0054] Specifically, the water drainage screen 1 further includes a first support leg (not shown in the figure) and a first screen frame 15. Support legs are provided on both the front and rear sides of the first screen frame 15, and the first screen plate 13 is arranged on the first screen frame 15. The first support leg is installed on the platform where the coal particle recovery device 100 of the embodiment of the present utility model is located, and the first support leg supports the first screen frame 15 and the first screen plate 13.

[0055] The water discharge sieve 1 further includes a second vibration motor 14, and the second vibration motor 14 is connected to the first sieve plate 13. Specifically, the second vibration motor 14 is arranged on the cross beam of the first sieve frame 15. After the second vibration motor 14 is started, the second vibration motor 14 drives the first sieve frame 15 to vibrate, and the first sieve frame 15 drives the first sieve plate 13 to vibrate, so that the first sieve plate 13 drives the coarser coal particles flowing through it to vibrate, thereby increasing the velocity difference between the coarse coal particles and the liquid, accelerating the separation of the coarse coal particles from the liquid, improving the dehydration capacity of the water discharge sieve 1, and further improving the preliminary dehydration effect of the coarse coal particles.

[0056] Specifically, as Figure 2 shown, the length of the cloth feeding box 4 in the front-rear direction < the length of the water discharge sieve 1 in the front-rear direction < the length of the dehydration sieve 3 in the front-rear direction < the length of the liquid receiving tank 2 in the front-rear direction, so as to ensure that the liquid flowing down from the first sieve plate 13 and the second sieve plate 31 can flow into the liquid receiving tank 2, ensure that the coarse coal particles flow to the dehydration sieve 3, avoid the overflow of the centrifugal liquid when passing through the coal particle recovery device 100 of the embodiment of the present invention, and ensure the safety and reliability of the coal particle recovery device 100 of the embodiment of the present invention during use.

[0057] It should be noted that the second vibration motor 14 drives the first sieve frame 15 and the first sieve plate 13 to vibrate. A first elastic member is arranged between the first sieve frame 15 and the first support leg. The first elastic member can reduce vibration and absorb energy to avoid the second vibration motor 14 driving the first support leg to vibrate when vibrating, thereby ensuring the stability and installation of the water discharge sieve 1. For example, the first elastic member is a spring.

[0058] The dehydration sieve 3 includes a second sieve plate 31 and a first vibration motor 32. The first vibration motor 32 is connected to the second sieve plate 31. The second sieve plate 31 is located between the first outlet 12 and the liquid discharge port 21 in the first direction. The second sieve plate 31 has opposite first end 311 and second end 312 in the second direction. The second direction is perpendicular to the first direction. The first end 311 is opposite to the first outlet 12 in the first direction, and the first end 311 is closer to the liquid discharge port 21 than the second end 312 in the first direction. That is to say, the first end 311 is located below the second end 312.

[0059] The coarse coal particles discharged from the first outlet 12 of the water discharge sieve 1 enter the dehydration sieve 3. The first vibration motor 32 drives the second sieve plate 31 to vibrate, so that the coal particles are gradually vibrated from a low place to a high place, that is, the coal particles are moved from the first end 311 to the second end 312, and are discharged from the second end 312 under the action of vibration. At the same time, the vibration of the second sieve plate 31 separates the coal particles from the liquid, and the liquid is discharged from the sieve holes of the second sieve plate 31 to the liquid receiving tank 2, realizing the further dehydration of the coal particles. Moreover, during the process of the coal particles being vibrated from the first end 311 to the second end 312, the continuous vibration of the coal particles can also improve the dehydration and drying effect of the coal particles.

[0060] Specifically, the included angle between the second sieve plate 31 and the second direction is 1° - 5°. For example, the included angle between the second sieve plate 31 and the second direction is 2°, 3° or 4°.

[0061] As Figure 1 shown, the included angle between the second sieve plate 31 and the second direction is 2°.

[0062] Specifically, the dewatering sieve 3 further includes a second sieve frame 33 and second legs (not shown in the figure). Second legs are provided on both the front and rear sides of the second sieve frame 33. The second legs are installed on the platform where the coal particle recovery device 100 of the embodiment of the present utility model is located. The second legs support the second sieve frame 33 and the second sieve plate 31. The first vibration motor 32 is provided on the cross beam of the second sieve frame 33. The first vibration motor 32 drives the second sieve frame 33 to vibrate, and the second sieve frame 33 drives the second sieve plate 31 to vibrate. It should be noted that there are gaps between the lower end of the first sieve plate 13 and the first outlet 12 and the dewatering sieve 3, ensuring that the vibrations between the first sieve plate 13 and the second sieve plate 31 are independent of each other.

[0063] It should be noted that the first vibration motor 32 drives the second sieve frame 33 and the second sieve plate 31 to vibrate. A second elastic member is provided between the second sieve frame 33 and the second legs. The second elastic member can reduce vibration and absorb energy to prevent the first vibration motor 32 from driving the second legs to vibrate, thereby ensuring the stability and installation of the dewatering sieve 3. For example, the second elastic member is a spring.

[0064] In some embodiments, the water drainage sieve 1 includes a first spraying assembly 16. The first spraying assembly 16 includes a first water pipe 162 and a plurality of first nozzles 161. The first water pipe 162 is provided on the first sieve frame 15. The first water pipe 162 is connected to an external water supply system. A plurality of first nozzles 161 are provided on the first water pipe 162. When the first sieve plate 13 of the water drainage sieve 1 needs to be cleaned, the water supply system supplies water to the first water pipe 162, and the first nozzles 161 spray water onto the first sieve plate 13, thereby being able to clean the sieve surface of the first sieve plate 13, preventing particle blockage of the sieve holes of the first sieve plate 13, and ensuring the normal use of the first sieve plate 13.

[0065] Specifically, there are two first spraying assemblies 16. The plurality of first nozzles 161 of each first spraying assembly 16 are arranged in a line in the front - rear direction on the first sieve frame 15. The orientations of adjacent first nozzles 161 are different, which is conducive to increasing the water spraying area of the plurality of first nozzles 161, enlarging the cleaning area, and further improving the cleaning effect on the first sieve frame 15.

[0066] Furthermore, when the first water pipe 162 is connected to the first sieve frame 15, a vibration - damping pad is provided between the first water pipe 162 and the first sieve frame 15 to prevent damage to the first water pipe 162 caused by the vibration of the first sieve frame 15.

[0067] In some embodiments, the dewatering screen 3 includes a second spraying assembly 34. The second spraying assembly 34 includes a second water pipe 341 and a plurality of second nozzles 342. The second water pipe 341 is arranged on the second screen frame 33. The second water pipe 341 is connected to an external water supply system, and a plurality of second nozzles 342 are arranged on the second water pipe 341. When the second screen plate 31 of the dewatering screen 3 needs to be cleaned, the water supply system supplies water to the second water pipe 341, and the second nozzles 342 spray water onto the second screen plate 31, so as to clean the screen surface of the second screen plate 31, avoid particle blockage of the screen holes of the second screen plate 31, and ensure the normal use of the second screen plate 31.

[0068] Specifically, the plurality of second nozzles 342 are arranged in a line along the inclined direction of the second screen plate 31 on the second screen frame 33. The different orientations of adjacent second nozzles 342 are conducive to increasing the water spraying area of the plurality of second nozzles 342 and enlarging the cleaning area, further improving the cleaning effect on the second screen plate 31.

[0069] Furthermore, when the second water pipe 341 is connected to the second screen frame 33, a vibration damping pad is provided between the second water pipe 341 and the second screen frame 33 to prevent the vibration of the second screen frame 33 from damaging the second water pipe 341.

[0070] The arrangements of the first spraying assembly 16 and the second spraying assembly 34 make the cleaning of the first screen plate 13 and the second screen plate 31 convenient and efficient, which is conducive to reducing the downtime of the drainage screen 1 and the dewatering screen 3, improving the operation efficiency of the coal particle recovery device 100 of the embodiment of the present invention for recovering coarser coal particles, and increasing the recovery amount.

[0071] Next, the coal slime water treatment system of the embodiment of the present invention will be described.

[0072] The coal slime water treatment system of the embodiment of the present invention includes a coal particle recovery device 100.

[0073] Therefore, the coal slime water treatment system of the embodiment of the present invention can recover coarser coal particles in the centrifugate, and the dehydrating effect of the coarse coal particles is good and the drying property is good. It can avoid the circulation of the coarse coal particles in the subsequent processes, not only saving energy consumption, but also avoiding the wear of the pipeline by the coarse coal particles in the subsequent processes and the formation of coal slime due to the self-wear of the coarse coal particles into small-sized pulverized coal, resulting in the waste of coal resources and economic losses. Therefore, the coal slime water treatment system of the embodiment of the present invention is conducive to energy conservation and consumption reduction, improving the recovery efficiency of coarse coal particles in the centrifugate, and increasing economic benefits.

[0074] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0075] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0076] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0077] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0078] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0079] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A coal particle recovery device (100), characterized in that, include: A drainage screen (1), the drainage screen (1) having a first inlet (11) and a first outlet (12) opposite to each other in a first direction, the drainage screen (1) being provided with a first sieve plate (13), the angle between the first sieve plate (13) and a second direction being 45°-60°, the second direction being perpendicular to the first direction, the first inlet (11) being located on one side of the first sieve plate (13) in the first direction; a liquid receiving trough (2), the liquid receiving trough (2) being located on the other side of the first sieve plate (13) in the first direction, the liquid receiving trough (2) being provided with a liquid discharge port (21); A dewatering screen (3), the dewatering screen (3) comprising a second screen plate (31) and a first vibration motor (32), the second screen plate (31) being located between the first outlet (12) and the liquid discharge port (21) in the first direction, the second screen plate (31) having a first end (311) and a second end (312) opposite to each other in the second direction, the first end (311) being opposite to the first outlet (12) in the first direction, the first end (311) being adjacent to the liquid discharge port (21) relative to the second end (312) in the first direction, and the first vibration motor (32) being connected to the second screen plate (31).

2. The coal particle recovery device (100) according to claim 1, characterized in that, It also includes a material distribution box (4), and the material distribution box (4) includes: a box body (41), the box body (41) being located on a side of the first inlet (11) away from the liquid discharge port (21) in the first direction, and the box body (41) being provided with a liquid inlet (411) and a first liquid outlet on two sides in the first direction, respectively; a plurality of buffer plates (42), the plurality of buffer plates (42) being arranged at intervals in the first direction, two adjacent buffer plates (42) being respectively arranged on both sides of the box body (41), and parts of the two adjacent buffer plates (42) being opposite to each other in the first direction; and A first liquid outlet pipe (43), one end of which is connected to the first liquid outlet, and the other end of which is adjacent to the first sieve plate (13). The other end of the first liquid outlet pipe (43) is connected to the first inlet (11).

3. The coal particle recovery device (100) according to claim 2, characterized in that, The buffer plate (42) comprises a first plate section (421) and a second plate section (422), one end of the first plate section (421) is connected to the box body (41), a material leakage hole is provided on the first plate section (421), the other end of the first plate section (421) is connected to the second plate section (422), and the second plate section (422) faces the liquid inlet (411).

4. The coal particle recovery device (100) according to claim 2, characterized in that, The material distribution box (4) further comprises a concentration meter (44), and the concentration meter (44) is arranged in the box body (41).

5. The coal particle recovery device (100) according to claim 2, characterized in that, The box body (41) is provided with a second liquid outlet; The material distribution box (4) further comprises: A first valve (45), wherein the first valve (45) is disposed on the first liquid outlet pipe (43); A second liquid discharge pipe (46), one end of the second liquid discharge pipe (46) is communicated with the second liquid outlet, and the other end of the second liquid discharge pipe (46) is communicated with the liquid receiving tank (2); and A second valve (47), the second valve (47) is arranged on the second liquid discharge pipe (46).

6. The coal particle recovery device (100) according to claim 2, characterized in that, The cloth bin (4) further includes a flow guide plate (48), the flow guide plate (48) is inclined in the direction of the first sieve plate (13) and arranged in the first liquid discharge pipe (43), there are a plurality of the flow guide plates (48), and two adjacent buffer plates (42) are respectively arranged on opposite sides of the first liquid discharge pipe (43).

7. The coal particle recovery device (100) according to claim 1, characterized in that, The water discharge sieve (1) includes a second vibration motor (14), and the second vibration motor (14) is connected to the first sieve plate (13).

8. The coal particle recovery device (100) according to claim 1, wherein, The water discharge sieve (1) includes a first sieve frame (15) and a first spraying assembly (16), the first sieve frame (15) is connected to the first sieve plate (13), the first spraying assembly (16) includes a first water pipe (162) and a plurality of first nozzles (161), the first water pipe (162) is arranged on the first sieve frame (15), and a plurality of the first nozzles (161) are arranged on the first water pipe (162); and / or, The dehydration sieve (3) includes a second sieve frame (33) and a second spraying assembly (34), the second sieve frame (33) is connected to the second sieve plate (31), the second spraying assembly (34) includes a second water pipe (341) and a plurality of second nozzles (342), the second water pipe (341) is arranged on the second sieve frame (33), and a plurality of second nozzles (342) are arranged on the second water pipe (341).

9. The coal particle recovery device (100) according to claim 1, wherein, The included angle between the second sieve plate (31) and the second direction is 1° - 5°.

10. A slime water treatment system, characterized in that, Including the coal particle recovery device (100) according to any one of claims 1 to 9.

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