A coal washing and processing device and its washing method

Abstract

The present invention relates to the technical field of coal washing, and discloses a coal washing and processing device and a washing method thereof, including: a base and a bearing assembly, the bearing assembly is used to accommodate the coal to be screened, and is arranged on the upper side of the base; the bearing assembly includes a container, the container is fixedly installed on the base, a bearing plate is fixedly installed on the inner bottom of the container, and a screening assembly is arranged on the base. The present invention adopts the technical means of the cooperation of the screening assembly and water flow. The screening assembly drives the coal and gangue on the bearing plate to move, and cooperates with the barbs on the bearing plate to scrape the impurities on the coal and gangue. At the same time, the push rod is used to push the coal and gangue piled up on the bearing plate, so that the coal mixed in the gangue floats up, and the gangue sinks to the bottom of the container under the push of the push rod. This device can complete the screening of coal and gangue with only a small amount of water resources, overcomes the deficiencies of the prior art, and further improves the practicability of this device.

Description

Technical Field

[0001] The present invention relates to the technical field of coal washing, and more specifically, it relates to a coal washing and processing device and its washing method. Background Art

[0002] Coal washing generally refers to the process of removing gangue and other impurities from coal. Its principle is to utilize the different densities of coal and gangue, and cooperate with washing equipment to complete the screening operation of coal.

[0003] In the prior art, a relatively large washing device is mostly used for screening. The specific operation is as follows: Coal doped with gangue and other impurities is conveyed to the feeding port of the washing device through a belt conveyor. Then, the water flowing in a specific direction is used to drive it to move together. During the moving process, the water can wash other impurities on the coal and gangue. And because the density of gangue is greater than that of coal, the coal gradually floats on the upper layer of the water flow during the moving process, while the gangue sinks to the lower layer of the water flow. Finally, with the wave-like impact of the water flow, the screened coal is sent into another collection space in batches, thus completing the coal washing operation.

[0004] Although the above technical solution can better complete the coal washing operation, in the actual operation process, since the screening of coal in this device mainly depends on the continuous flow of water, this leads to a large amount of water resources being consumed in each washing operation. At the same time, due to the large volume of this device, it is mainly applicable to the washing operation of a large amount of coal. When a small amount of remaining coal needs to be screened, starting this device easily causes waste of electric energy and the cost is relatively high. Summary of the Invention

[0005] The present invention provides a coal washing and processing device to solve the technical problems in the related art that the existing washing devices are prone to waste of water resources and relatively high cost.

[0006] The present invention provides a coal washing and processing device, including: a base and a bearing assembly. The bearing assembly is used to accommodate the coal to be screened and is arranged on the upper side of the base; the bearing assembly includes a container, the container is fixedly installed on the base, and a bearing plate is fixedly installed at the inner bottom of the container;

[0007] A screening assembly, arranged on the base. The screening assembly includes a screening pipe. The lower end of the screening pipe is rotatably arranged on the base. The container and the bearing plate are both rotatably connected to the middle section of the screening pipe. At least one push rod is fixedly connected to the outer side of the screening pipe. A driving device for driving the screening pipe to rotate is arranged on the base;

[0008] A water supply assembly, arranged on the base. The water outlet end of the water supply assembly is arranged inside the container;

[0009] The feeding assembly is arranged on the container and is used to convey the coal to be screened onto the bearing plate.

[0010] Preferably, a floating assembly is arranged in the container. The floating assembly includes an annular guide rail fixedly installed on the edge of the upper pipe orifice of the sieve pipe. A lower annular block is rotatably connected to the annular guide rail. A corrugated pipe is fixedly installed on the lower annular block. The upper side of the corrugated pipe is fixedly connected to an upper annular block. At least two cross bars are fixedly connected to the upper annular block. One end of each cross bar far away from the upper annular block is fixedly connected to a sleeve. The container is fixedly installed with vertical rods corresponding to the number of the sleeves. Each sleeve is slidably connected to the corresponding vertical rod. A spring is sleeved on the vertical rod, and the spring is located below the corresponding sleeve. A moving assembly for driving the upper annular block to move up and down is arranged on the sieve pipe.

[0011] Preferably, the moving assembly includes a moving block fixedly installed on the sieve pipe. A guiding groove is formed in the moving block. An extension rod is fixedly connected to the lower side of each cross bar. The lower end of the extension rod has a convex part, and the convex part is slidably connected to the guiding groove. Installation blocks corresponding to the number of the extension rods are fixedly connected to the lower annular block. A through groove for the corresponding extension rod to penetrate and slide is formed in each installation block.

[0012] Preferably, a hollow water storage cavity is formed inside the base. The lower end of the sieve pipe is communicated with the water storage cavity. A discharging assembly is arranged in the base. The discharging assembly includes a guide plate fixedly installed in the base. A plurality of water leakage holes are formed in the guide plate. The feeding side of the guide plate is arranged directly below the sieve pipe. The discharging side of the guide plate extends outside the base. A water outlet is formed in the container. The lower edge of the water outlet is flush with the upper surface of the upper annular block. A hose is fixedly connected to the container. The hose is communicated with the water outlet. A flushing pipe is fixedly installed on the base. One end of the hose far away from the container is communicated with the flushing pipe. And the flushing port of the flushing pipe is located above the guide plate. A filter screen is fixedly installed on the water outlet.

[0013] Preferably, a plurality of barbs are fixedly connected to the upper surface of the bearing plate, and each barb is inclined. The barbs are made of rubber.

[0014] Preferably, the driving device includes a speed regulating motor fixedly installed on the base. The output end of the speed regulating motor is fixedly connected to a driving gear. A driven gear is fixedly connected to the outer side of the sieve pipe. The driving gear is meshed with the driven gear.

[0015] Preferably, the feeding assembly includes a feed pipe fixedly installed on the container, and a carbon outlet groove is formed on one side of the feed pipe close to the screening assembly.

[0016] Preferably, a sewage discharge pipe is also fixedly installed on the container and is communicated therewith, and a pipe cap is threadedly connected to the sewage discharge pipe.

[0017] Preferably, the water supply assembly includes an electric water pump fixedly installed on the base. The input end of the electric water pump is fixedly connected to a water inlet pipe and is communicated therewith. The water inlet end of the water inlet pipe extends into the water storage cavity. The output end of the electric water pump is fixedly connected to a water outlet pipe. The water outlet pipe is fixedly connected to the container and is communicated therewith, and the water outlet end of the water outlet pipe extends into the container. A water level sensor is fixedly installed in the container, and the water level sensor is in signal connection with the electric water pump.

[0018] Preferably, its washing and screening method includes the following steps:

[0019] S1: First, start the electric water pump. The input end of the electric water pump cooperates with the water inlet pipe to draw water from the base and send it into the container through the water outlet pipe. When the liquid level in the container rises to a set height, pour the coal to be screened into the container from the feed inlet on the feed pipe. Part of the relatively clean coal floats out directly from the carbon outlet groove under the buoyancy of the water and floats on the water surface. The rest of the coal contaminated with more slime or squeezed by gangue sinks to the bearing plate.

[0020] S2: At the same time, start the speed-regulating motor to drive the sieve pipe to rotate. Since the bearing plate is concave, the gangue and coal are annularly gathered at the position close to the sieve pipe on the inner side of the bearing plate. At this time, the rotating sieve pipe drives the push rod to rotate synchronously. While pushing the coal and gangue to roll, it can gradually push them away from the bearing plate. During the rolling process, the coal is washed by the water and gradually removes the attached slime. The rolling coal continuously impacts the barbs on the rolling path. The flexible barbs can gradually scrape off the slime attached to the coal without scratching the coal itself too much, and at the same time, it is no longer squeezed by the gangue and can float up. The gangue is gradually pushed to the outer ring by the push rod until it separates from the bearing plate and sinks to the inner bottom of the container, completing the preliminary screening operation of coal and gangue.

[0021] S3: Meanwhile, the rotating sieve pipe drives the moving block to rotate synchronously. The guide grooves on the moving block squeeze the convex parts on multiple extension rods, causing the convex parts, together with the extension rods and the corresponding mounting blocks, to slide relative to each other. During the process where multiple convex parts synchronously slide from the highest point of the upward concave part along the guide grooves to the lowest point of the downward protruding part, multiple extension rods, together with the upper annular block, move downward synchronously. Conversely, during the process where multiple convex parts synchronously slide from the lowest point of the downward protruding part along the guide grooves to the highest point of the upward concave part, multiple extension rods, together with the upper annular block, move upward synchronously. This cycle repeats, enabling the upper annular block to move up and down stably. When the upper annular block moves downward, it can suck part of the water body and coal into the sieve pipe;

[0022] S4: The coal after screening and preliminary cleaning, mixed with a small amount of water body, falls into the sieve pipe, slides down from the lower end of the sieve pipe to the guide plate. The water body therein falls into the water storage cavity along the water leakage holes on the guide plate for recycling. The coal slides down the guide plate to the outside of the base. Since the water body in the container is mixed with other impurities, during the process of the coal sliding on the guide plate, the water body in the container, including the container, undulates in a wavy manner under the pushing action of the floating assembly, enabling part of the filtered water body to be intermittently discharged from the water outlet. The water body flowing out through the filter screen flows along the hose and the flushing pipe. Since the lower nozzle of the flushing pipe is directly facing the guide plate, the water body flowing out through the flushing pipe just covers the coal sliding on the guide plate for secondary cleaning, and finally falls into the water storage cavity of the base through the water leakage holes;

[0023] S5: As the device operates, the water in the container, together with the screened coal, flows out through the sieve pipe. The water level sensor continuously monitors the height of the liquid level in the container. When the water level sensor detects that the liquid level is lower than the set value, the electric water pump is activated to supplement water resources into the container to the set height to ensure the normal operation of the device.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention adopts the technical means of combining the screening assembly and the water flow. The screening assembly drives the coal and gangue on the bearing plate to move, and cooperates with the barbs on the bearing plate to scrape the impurities on the coal and gangue. At the same time, the push rod is used to push the coal and gangue piled up on the bearing plate, making the coal mixed in the gangue float, while the gangue sinks to the bottom of the container under the push of the push rod. The device can complete the screening of coal and gangue with only a small amount of water resources, overcoming the deficiencies of the prior art, and thus improving the practicability of the device.

[0026] The present invention adopts the technical means of combining the floating assembly and the sieve pipe. By using the rotation of the sieve pipe to drive the upper annular block to move up and down, during the downward movement of the upper annular block, the screened coal is intermittently sucked into the screening barrel and then discharged through the discharging assembly, automatically completing the coal collection work, and thus improving the work efficiency.

[0027] The present invention adopts the technical means of cooperating a floating component and a discharging component. When coal passes through the output channel, through the up-and-down floating of the floating component, part of the filtered water body is intermittently sent above the conveying channel to scour the screened coal again, washing the impurities on it clean, further improving the quality of the screened coal, and thus improving the practicability of the device. Brief Description of the Drawings

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a three-dimensional structure schematic diagram of the present invention for showing the internal structure of the screening barrel;

[0030] Figure 3 is a three-dimensional structure schematic diagram of the present invention for showing the driving device;

[0031] Figure 4 is a three-dimensional structure schematic diagram of the present invention for showing the water supply component;

[0032] Figure 5 is a three-dimensional structure schematic diagram of the present invention for showing the floating component;

[0033] Figure 6 is an exploded schematic diagram of the present invention for showing the screening pipe and the moving block;

[0034] Figure 7 is a three-dimensional structure schematic diagram of the present invention for showing the moving component;

[0035] Figure 8 is a three-dimensional structure schematic diagram of the present invention for showing the discharging component;

[0036] Figure 9 is a three-dimensional structure schematic diagram of the present invention for showing the internal structure of the base.

[0037] In the figure: 100, base; 200, bearing component; 300, screening component; 400, water supply component; 500, feeding component; 600, floating component; 700, discharging component;

[0038] 201, container; 202, bearing plate; 203, barbs;

[0039] 301, screening pipe; 302, push rod; 303, speed control motor; 304, driving gear; 305, driven gear;

[0040] 401, electric water pump; 402, water inlet pipe; 403, water outlet pipe; 404, water level sensor;

[0041] 501, Feed pipe; 502, Charcoal outlet tank;

[0042] 601, Ring guide rail; 602, Lower ring block; 603, Bellows; 604, Upper ring block; 605, Cross bar; 606, Sleeve; 607, Vertical bar; 608, Spring; 609, Moving assembly;

[0043] 6091, Moving block; 6092, Guide groove; 6093, Extension rod; 6094, Mounting block;

[0044] 701, Guide plate; 702, Water outlet; 703, Hose; 704, Flushing pipe; 705, Filter screen; 706, Sewage pipe; 707, Pipe cap. Detailed implementation manners

[0045] Now, the subject matter described herein will be discussed with reference to exemplary implementation manners. It should be understood that discussing these implementation manners is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0046] As Figure 1 - Figure 9 shown, this implementation provides a coal washing and processing device, including:

[0047] A base 100 and a loading assembly 200. The loading assembly 200 is used to hold the coal to be screened and is disposed on the upper side of the base 100. The loading assembly 200 includes a container 201, the container 201 is fixedly installed on the base 100, a loading tray 202 is fixedly installed at the inner bottom of the container 201, a screening assembly 300, which is disposed on the base 100. The screening assembly 300 includes a screening pipe 301, the lower end of the screening pipe 301 is rotatably disposed on the base 100, both the container 201 and the loading tray 202 are rotatably connected to the middle section of the screening pipe 301. At least one push rod 302 is fixedly connected to the outer side of the screening pipe 301. A driving device for driving the screening pipe 301 to rotate is disposed on the base 100, a water supply assembly 400, which is disposed on the base 100, the water outlet end of the water supply assembly 400 is disposed inside the container 201, and a feeding assembly 500, which is disposed on the container 201 and is used to convey the coal to be screened onto the loading tray 202.

[0048] The working principle and beneficial effects of the above technical solution are as follows: First, water is supplied to the container 201 through the water supply component 400. When the liquid level in the container 201 rises to the set height, the coal to be screened is conveyed to the bearing plate 202 through the feeding component 500. Some of the coal with a relatively clean surface directly floats to the water surface, and the slime on the surface is initially washed clean during the floating process. The remaining coal with more attached slime or driven by gangue, together with the gangue, sinks to the bearing plate 202. At the same time, the driving device is started, and the driving device drives the screening pipe 301 to rotate. Since the bearing plate 202 is arranged in a concave shape, the gangue and coal are annularly gathered at a position near the screening pipe 301 on the inner side of the bearing plate 202. At this time, the rotating screening pipe 301 drives the push rod 302 to rotate synchronously. Since the push rod 302 is inclined, while pushing the coal and gangue to roll, it can gradually push them out in a direction away from the bearing plate 202. The coal is washed by the water body during the tumbling process, and the attached slime is gradually washed away. At the same time, it is no longer squeezed by the gangue. Because its density is less than the density of the water body, it floats upward. The gangue is gradually pushed to the outer ring by the push rod 302 until it separates from the bearing plate 202. Because its density is greater than the density of the water body, it sinks to the inner bottom of the container 201. Thus, the screening operation of coal is completed on the premise of using only a small amount of water body.

[0049] It should be noted that the base 100 is also provided with a water inlet and a sewage outlet for timely replacement of the water resources in the water storage cavity. Since it is a common existing technology in life, it is not shown in the figure.

[0050] In a specific embodiment: A floating component 600 is arranged in the container 201. The floating component 600 includes an annular guide rail 601 fixedly installed on the edge of the upper pipe orifice of the screening pipe 301. A lower annular block 602 is rotatably connected to the annular guide rail 601. A corrugated pipe 603 is fixedly installed on the lower annular block 602. The upper side of the corrugated pipe 603 is fixedly connected to an upper annular block 604. At least two cross bars 605 are fixedly connected to the upper annular block 604. One end of each cross bar 605 away from the upper annular block 604 is fixedly connected to a sleeve 606. The container 201 is fixedly installed with vertical rods 607 corresponding to the number of the sleeves 606. Each sleeve 606 is slidably connected to the corresponding vertical rod 607. A spring 608 is sleeved on the vertical rod 607, and the spring 608 is located below the corresponding sleeve 606. A moving component 609 for driving the upper annular block 604 to move up and down is arranged on the screening pipe 301.

[0051] The working principle and beneficial effects of the above technical solution are as follows: The rotating sieve tube 301 cooperates with the moving assembly 609 to drive the upper annular block 604 to move up and down. When the upper annular block 604 moves downward, it drives the corresponding cross bar 605 and the sleeve 606 to move downward synchronously, causing relative sliding between the sleeve 606 and the corresponding vertical rod 607. The spring 608 and the corrugated pipe 603 are both compressed. On the contrary, when the upper annular block 604 moves downward to a specified position, it moves upward under the elastic force of the spring 608, and the corrugated pipe 603 is stretched. In this way, the upper annular block 604 can repeatedly move up and down. While the sieve tube 301 rotates, it drives the annular guide rail 601 to rotate synchronously, causing relative rotation between the annular guide rail 601 and the lower annular block 602, and preventing excessive torsion of the corrugated pipe 603.

[0052] In a specific embodiment: The moving assembly 609 includes a moving block 6091 fixedly installed on the sieve tube 301. A guiding groove 6092 is formed on the moving block 6091. A lower side of each cross bar 605 is fixedly connected with an extension rod 6093. A lower end of the extension rod 6093 has a convex portion, and the convex portion is slidably connected with the guiding groove 6092. The lower annular block 602 is fixedly connected with mounting blocks 6094 corresponding to the number of the extension rods 6093. Each mounting block 6094 is provided with a through groove for the corresponding extension rod 6093 to penetrate and slide through.

[0053] The working principle and beneficial effects of the above technical solution are as follows: The rotating sieve tube 301 drives the moving block 6091 to rotate synchronously. The guiding groove 6092 on the moving block 6091 presses the convex portions on the plurality of extension rods 6093, causing relative sliding between the convex portions together with the extension rods 6093 and the corresponding mounting blocks 6094. Since the guiding groove 6092 is arranged in a regular undulating shape, and the extension rod 6093 can only move in the vertical direction under the limiting action of the sleeve 606, during the process of the plurality of convex portions synchronously sliding from the highest point of the upward concave portion of the guiding groove 6092 to the lowest point of the downward protruding portion, the plurality of extension rods 6093 together with the upper annular block 604 move downward synchronously. On the contrary, during the process of the plurality of convex portions synchronously sliding from the lowest point of the downward protruding portion of the guiding groove 6092 to the highest point of the upward concave portion, the plurality of extension rods 6093 together with the upper annular block 604 move upward synchronously. In this way, the upper annular block 604 can stably move up and down. When the upper annular block 604 moves downward, it can suck part of the water body and coal into the sieve tube 301, and discharge the coal along the sieve tube 301, reducing the manual workload. At the same time, during its up and down movement, it will cause the water surface in the container 201 to have a wavy undulation. At the same time, the mounting block 6094 cooperates with the extension rod 6093 to limit the movement of the lower annular block 602 and the corrugated pipe 603, preventing them from rotating with the rotation of the sieve tube 301, thereby ensuring the service life of the corrugated pipe 603.

[0054] It should be noted that the open guide groove 6092 can prevent slime or other impurities from being embedded therein, affecting the normal operation of the device.

[0055] In a specific embodiment: a hollow water storage cavity is provided inside the base 100, the lower end of the sieve pipe 301 is communicated with the water storage cavity, a discharge assembly 700 is arranged inside the base 100, the discharge assembly 700 includes a guide plate 701 fixedly installed inside the base 100, a plurality of water leakage holes are provided on the guide plate 701, the feed side of the guide plate 701 is arranged directly below the sieve pipe 301, the discharge side of the guide plate 701 extends outside the base 100, a water outlet 702 is provided on the container 201, the lower edge of the water outlet 702 is flush with the upper surface of the upper annular block 604, a hose 703 is fixedly connected to the container 201, the hose 703 is communicated with the water outlet 702, a flushing pipe 704 is fixedly installed on the base 100, one end of the hose 703 away from the container 201 is communicated with the flushing pipe 704, and the flushing port of the flushing pipe 704 is located above the guide plate 701, and a filter screen 705 is fixedly installed on the water outlet 702.

[0056] The working principle and beneficial effects of the above technical solution are as follows: The coal after screening and preliminary cleaning, mixed with a small amount of water, falls into the sieve pipe 301, slides down from the lower end of the sieve pipe 301 to the guide plate 701, and the water therein falls into the water storage cavity along the water leakage holes on the guide plate 701 for recycling, while the coal slides down the guide plate 701 to the outside of the base 100. Since the water in the container 201 is mixed with other impurities, during the sliding process of the coal on the guide plate 701, the water in the container 201 and the like undulates in a wave shape under the pushing action of the floating assembly 600, so that part of the water can be intermittently discharged from the water outlet 702 after being filtered by the filter screen 705. The water filtered by the filter screen 705 flows out along the hose 703 and the flushing pipe 704. Since the lower pipe orifice of the flushing pipe 704 is directly facing the guide plate 701, the water flowing out of the flushing pipe 704 just covers the coal sliding on the guide plate 701 for secondary cleaning, and finally falls into the water storage cavity of the base 100 through the water leakage holes.

[0057] In a specific embodiment: a plurality of barbs 203 are fixedly connected to the upper surface of the bearing plate 202, and each barb 203 is inclined, and the barb 203 is made of rubber material.

[0058] The working principle and beneficial effects of the above technical solution are as follows: The gangue and coal on the carrier plate 202 roll under the pushing action of the push rod 302. Since the rotation direction of the push rod 302 is opposite to the inclination direction of the barbs 203, the moving direction of the coal is also opposite to the inclination direction of the barbs 203. The tumbling coal continuously impacts the barbs 203 on the tumbling path. The barbs 203 made of flexible material can gradually scrape off the slime attached to the coal without excessively scratching the coal itself, achieving the technical effect of cleaning the coal.

[0059] In a specific embodiment: The driving device includes a speed-regulating motor 303 fixedly installed on the base 100. The output end of the speed-regulating motor 303 is fixedly connected with a driving gear 304. The outer side of the screening pipe 301 is fixedly connected with a driven gear 305. The driving gear 304 is meshed and connected with the driven gear 305.

[0060] The working principle and beneficial effects of the above technical solution are as follows: Start the speed-regulating motor 303. The output shaft of the speed-regulating motor 303 rotates, driving the driving gear 304 to rotate, and then driving the driven gear 305 to rotate and the screening pipe 301 to rotate synchronously.

[0061] In a specific embodiment: The feeding assembly 500 includes a feeding pipe 501 fixedly installed on the container 201. A coal outlet groove 502 is formed on one side of the feeding pipe 501 close to the screening assembly 300.

[0062] The working principle and beneficial effects of the above technical solution are as follows: When feeding, the coal to be screened is poured from the feeding port on the feeding pipe 501 mechanically or manually. Part of the relatively clean coal floats out directly from the coal outlet groove 502 under the buoyancy of the water body and floats on the water surface. The rest of the coal contaminated with more slime or squeezed by gangue sinks to the carrier plate 202.

[0063] In a specific embodiment: A sewage discharge pipe 706 is also fixedly installed on the container 201 and is communicated therewith. A pipe cap 707 is threadedly connected to the sewage discharge pipe 706.

[0064] The working principle and beneficial effects of the above technical solution are as follows: Every time the screening of the remaining coal is completed, or when the quantity of gangue accumulated at the bottom of the container 201 is relatively large, turn off the device, open the pipe cap 707, and discharge the gangue and the remaining water body in the container 201 from the sewage discharge pipe 706.

[0065] In a specific embodiment: The water supply assembly 400 includes an electric water pump 401 fixedly installed on the base 100. The input end of the electric water pump 401 is fixedly connected to and communicated with a water inlet pipe 402. The water inlet end of the water inlet pipe 402 extends into the water storage cavity. The output end of the electric water pump 401 is fixedly connected to a water outlet pipe 403. The water outlet pipe 403 is fixedly connected to and communicated with the container 201, and the water outlet end of the water outlet pipe 403 extends into the container 201. A water level sensor 404 is fixedly installed in the container 201, and the water level sensor 404 is in signal connection with the electric water pump 401.

[0066] The working principle and beneficial effects of the above technical solution are as follows: Start the electric water pump 401. The input end of the electric water pump 401 cooperates with the water inlet pipe 402 to pump water from the base 100, and send it into the container 201 through the water outlet pipe 403 until the water level in the container 201 rises to a position flush with the upper surface of the upper annular block 604. As the device operates, the water in the container 201 flows out through the sieve pipe 301 together with the screened coal. When the water level sensor 404 detects that the water level is too low, the electric water pump 401 is started to replenish the water resource in the container 201 to the set height (the water level sensor 404 in the text is a prior art, and its working principle will not be described in detail here).

[0067] The embodiments of the present invention have been described above, but these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A coal washing and processing device, characterized in that Comprising: A base (100) and a bearing assembly (200), the bearing assembly (200) being used for accommodating the coal to be screened and being arranged on the upper side of the base (100); the bearing assembly (200) includes a container (201), the container (201) is fixedly installed on the base (100), and a bearing plate (202) is fixedly installed on the inner bottom of the container (201); A screening assembly (300), arranged on the base (100), the screening assembly (300) includes a screening pipe (301), the lower end of the screening pipe (301) is rotatably arranged on the base (100), both the container (201) and the bearing plate (202) are rotatably connected to the middle section of the screening pipe (301), at least one push rod (302) is fixedly connected to the outer side of the screening pipe (301), and a driving device for driving the screening pipe (301) to rotate is arranged on the base (100); A water supply assembly (400), arranged on the base (100), the water outlet end of the water supply assembly (400) is arranged inside the container (201); A feeding assembly (500), arranged on the container (201) and used for conveying the coal to be screened onto the bearing plate (202); A floating assembly (600) is arranged inside the container (201), the floating assembly (600) includes an annular guide rail (601) fixedly installed on the edge of the upper pipe orifice of the screening pipe (301), a lower annular block (602) is rotatably connected to the annular guide rail (601), a corrugated pipe (603) is fixedly installed on the lower annular block (602), an upper annular block (604) is fixedly connected to the upper side of the corrugated pipe (603), at least two cross bars (605) are fixedly connected to the upper annular block (604), a sleeve (606) is fixedly connected to one end of each cross bar (605) away from the upper annular block (604), the container (201) is fixedly installed with vertical rods (607) corresponding to the number of the sleeves (606), each sleeve (606) is slidably connected to the corresponding vertical rod (607), a spring (608) is sleeved on the vertical rod (607), and the spring (608) is located below the corresponding sleeve (606), and a moving assembly (609) for driving the upper annular block (604) to move up and down is arranged on the screening pipe (301); The moving component (609) includes a moving block (6091) fixedly installed on the sieve pipe (301). A guiding groove (6092) is formed on the moving block (6091). An extension rod (6093) is fixedly connected to the lower side of each cross bar (605). The lower end of the extension rod (6093) has a convex part which is slidably connected with the guiding groove (6092). A mounting block (6094) corresponding to the number of the extension rods (6093) is fixedly connected to the lower annular block (602). A through groove for the corresponding extension rod (6093) to penetrate and slide is formed on each mounting block (6094).

2. The coal washing and processing equipment according to claim 1, characterized in that, A hollow water storage cavity is formed inside the base (100). The lower end of the sieve pipe (301) is communicated with the water storage cavity. A discharging component (700) is arranged inside the base (100). The discharging component (700) includes a guide plate (701) fixedly installed inside the base (100). A plurality of water leakage holes are formed on the guide plate (701). The feeding side of the guide plate (701) is arranged directly below the sieve pipe (301). The discharging side of the guide plate (701) extends outside the base (100). A water outlet (702) is formed on the container (201). The lower edge of the water outlet (702) is flush with the upper surface of the upper annular block (604). A hose (703) is fixedly connected to the container (201). The hose (703) is communicated with the water outlet (702). A flushing pipe (704) is fixedly installed on the base (100). One end of the hose (703) far away from the container (201) is communicated with the flushing pipe (704). The flushing port of the flushing pipe (704) is located above the guide plate (701). A filter screen (705) is fixedly installed on the water outlet (702).

3. A coal washing and processing device according to claim 2, characterized in that, A plurality of barbs (203) are fixedly connected to the upper surface of the bearing plate (202). Each barb (203) is inclined. The barbs (203) are made of rubber material.

4. A coal washing and processing device according to claim 3, characterized in that, The driving device includes a speed regulating motor (303) fixedly installed on the base (100). The output end of the speed regulating motor (303) is fixedly connected with a driving gear (304). A driven gear (305) is fixedly connected to the outer side of the sieve pipe (301). The driving gear (304) is meshed and connected with the driven gear (305).

5. A coal washing and processing device according to claim 4, characterized in that, The feeding component (500) includes a feeding pipe (501) fixedly installed on the container (201). A carbon discharging groove (502) is formed on one side of the feeding pipe (501) close to the screening component (300).

6. The coal washing and processing equipment according to claim 5, characterized in that, A sewage discharge pipe (706) is also fixedly installed on the container (201) and communicated therewith. A pipe cap (707) is threadedly connected to the sewage discharge pipe (706).

7. The coal washing and processing equipment according to claim 6, wherein, The water supply component (400) includes an electric water pump (401) fixedly installed on the base (100). The input end of the electric water pump (401) is fixedly connected to and communicated with a water inlet pipe (402). The water inlet end of the water inlet pipe (402) extends into the water storage cavity. The output end of the electric water pump (401) is fixedly connected to a water outlet pipe (403). The water outlet pipe (403) is fixedly connected to and communicated with the container (201), and the water outlet end of the water outlet pipe (403) extends into the container (201). A water level sensor (404) is fixedly installed in the container (201), and the water level sensor (404) is in signal connection with the electric water pump (401).

8. A washing method using the coal washing and processing equipment as described in claim 7, comprising the following steps: S1: First, start the electric water pump (401). The input end of the electric water pump (401) cooperates with the water inlet pipe (402) to pump water from the base (100) and send it into the container (201) through the water outlet pipe (403). When the liquid level in the container (201) rises to the set height, pour the coal to be screened into the feeding port on the feeding pipe (501). Part of the relatively clean coal floats out directly from the coal discharging trough (502) under the buoyancy of the water body and floats on the water surface. The rest of the coal contaminated with more coal slime or squeezed by gangue sinks onto the bearing plate (202). S2: At the same time, start the speed regulating motor (303) to drive the sieve tube (301) to rotate. Since the bearing plate (202) is arranged in a concave shape, the gangue and coal gather in a ring shape at the inner side of the bearing plate (202) close to the sieve tube (301). At this time, the rotating sieve tube (301) drives the push rod (302) to rotate synchronously. While pushing the coal and gangue to roll, it can gradually push them away from the bearing plate (202). During the rolling process, the coal is washed by the water body, and the attached coal slime is gradually washed off. The rolling coal continuously impacts the barbs (203) on the rolling path. The flexible barbs (203) can gradually scrape off the coal slime attached to the coal without excessively scratching the coal itself, and at the same time, it is no longer squeezed by the gangue and can float. The gangue is gradually pushed to the outer circle by the push rod (302) until it separates from the bearing plate (202) and sinks to the inner bottom of the container (201), completing the preliminary screening operation of coal and gangue. S3: Meanwhile, the rotating sieve pipe (301) drives the moving block (6091) to rotate synchronously. The guide groove (6092) on the moving block (6091) presses the convex parts on multiple extension rods (6093), causing the convex parts, together with the extension rods (6093) and the corresponding mounting blocks (6094), to slide relatively. During the process where multiple convex parts synchronously slide from the highest point of the upward concave part of the guide groove (6092) to the lowest point of the downward protruding part, multiple extension rods (6093), together with the upper annular block (604), move downward synchronously. Conversely, during the process where multiple convex parts synchronously slide from the lowest point of the downward protruding part of the guide groove (6092) to the highest point of the upward concave part, multiple extension rods (6093), together with the upper annular block (604), move upward synchronously. This cycle repeats, enabling the upper annular block (604) to move up and down stably. When the upper annular block (604) moves downward, it can suck part of the water body and coal into the sieve pipe (301); S4: The coal after screening and preliminary cleaning, mixed with a small amount of water body, falls into the sieve pipe (301) and slides down from the lower end of the sieve pipe (301) onto the guide plate (701). The water body therein falls into the water storage cavity along the water leakage holes on the guide plate (701) for recycling. The coal slides down the guide plate (701) to the outside of the base (100). Since other impurities are mixed in the water body in the container (201), during the process of the coal sliding on the guide plate (701), the water body including the container (201) undulates in a wavy manner under the pushing action of the floating assembly (600), enabling part of the filtered water body to be intermittently discharged from the water outlet (702). The water body filtered by the filter screen (705) flows out along the hose (703) and the flushing pipe (704). Since the lower pipe orifice of the flushing pipe (704) is directly opposite to the guide plate (701), the water body flowing out of the flushing pipe (704) just covers the coal sliding on the guide plate (701) for secondary cleaning, and finally falls into the water storage cavity of the base (100) through the water leakage holes; S5: As the device operates, the water in the container (201) flows out through the sieve pipe (301) together with the screened coal. The water level sensor (404) monitors the height of the liquid level in the container (201) in real time. When the water level sensor (404) detects that the liquid level is lower than the set value, the electric water pump (401) starts to replenish water resources into the container (201) to the set height to ensure the normal operation of the device.

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