Coal washing and selecting processing equipment and washing and selecting method thereof

Abstract

The invention relates to the technical field of coal washing and dressing, and discloses coal washing and dressing processing equipment and a washing and dressing method.The coal washing and dressing processing equipment comprises a base and a bearing assembly, and the bearing assembly is used for containing coal to be screened and arranged on the upper side of the base; the bearing assembly comprises a container, the container is fixedly installed on the base, a bearing disc is fixedly installed at the inner bottom of the container, and the screening assembly is arranged on the base. The technical means that the screening assembly and water flow are matched is adopted, the screening assembly drives coal and gangue on the bearing disc to move, barbs on the bearing disc are matched to scrape impurities on the coal and the gangue, meanwhile, the push rod is used for pushing the coal and the gangue accumulated on the bearing disc, the coal mingled in the gangue floats upwards, and the coal and the gangue are separated from the bearing disc. According to the coal and gangue screening device, screening of coal and gangue can be completed only through a small amount of water resources, the defects in the prior art are overcome, and then the practicability of the coal and gangue screening device is improved.

Description

Technical Field

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

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

[0003] The existing technology mostly uses a relatively large-scale washing equipment for screening. The specific operation is to transport the coal mixed with gangue and other impurities to the feeding port of the washing equipment through a belt conveyor, and then use the directional flow of water to drive it to move together. During the movement, the water flow can wash away other impurities on the coal and gangue. Since the density of gangue is greater than that of coal, the coal gradually floats on the upper layer of the water flow during the movement, and 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, thereby completing the coal washing operation.

[0004] Although the above technical solution can complete the coal washing operation well, in the actual operation process, since the screening of coal in the device mainly depends on the continuous flow of water, a large amount of water resources are consumed for each washing operation. At the same time, due to the large size of the equipment, it is mainly suitable for large-scale coal washing operations. When a small amount of residual coal needs to be screened, activating the device is likely to cause waste of electricity and high cost. Summary of the invention

[0005] The present invention provides a coal washing and processing equipment, which solves the technical problems of the existing coal washing and processing equipment in the related art that the existing coal washing and processing equipment easily causes waste of water resources and has high cost.

[0006] The present invention provides a coal washing and processing equipment, comprising: a base and a bearing assembly, wherein the bearing assembly is used to contain coal to be screened and is arranged on the upper side of the base; the bearing assembly comprises a container, which is fixedly mounted on the base, and a bearing plate is fixedly mounted on the inner bottom of the container; A screening assembly is arranged on the base, the screening assembly comprises a screening tube, the lower end of the screening tube is rotatably arranged on the base, the container and the carrying plate are both rotatably connected to the middle section of the screening tube, at least one push rod is fixedly connected to the outer side of the screening tube, and a driving device for driving the screening tube to rotate is arranged on the base; A water supply component is arranged on the base, and a water outlet of the water supply component is arranged in the container; A feeding assembly is arranged on the container and is used for conveying the coal to be screened onto the carrying plate.

[0007] Preferably, a floating assembly is provided in the container, and the floating assembly includes an annular guide rail fixedly mounted on the edge of the pipe mouth of the screening tube, a lower annular block is rotatably connected to the annular guide rail, a bellows is fixedly mounted on the lower annular block, an upper annular block is fixedly connected to the upper side of the bellows, at least two cross bars are fixedly connected to the upper annular block, and one end of each cross bar away from the upper annular block is fixedly connected to a sleeve, a corresponding number of vertical bars are fixedly mounted on the container, each sleeve is slidably connected to the corresponding vertical bar, a spring is sleeved on the vertical bar, and the spring is located on the lower side of the corresponding sleeve, and a moving assembly for driving the upper annular block to move up and down is provided on the screening tube.

[0008] Preferably, the moving assembly includes a moving block fixedly mounted on the screen pipe, a guide groove being provided on the moving block, an extension rod being fixedly connected to the lower side of each cross bar, a convex portion being provided at the lower end of the extension rod, and the convex portion being slidably connected to the guide groove, a corresponding number of mounting blocks being fixedly connected to the lower annular block as the extension rods, and each mounting block being provided with a through groove for the corresponding extension rod to penetrate and slide.

[0009] Preferably, a hollow water storage chamber is provided inside the base, the lower end of the screen tube is communicated with the water storage chamber, a discharge assembly is provided in the base, the discharge assembly includes a guide plate fixedly mounted in the base, a plurality of water leakage holes are provided on the guide plate, the feed side of the guide plate is arranged directly below the screen tube, the discharge side of the guide plate extends to the outside of the base, a water outlet is provided on 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 mounted on the base, the end of the hose away from the container is communicated with the flushing pipe, and the flushing port of the flushing pipe is located on the upper side of the guide plate, and a filter is fixedly mounted on the water outlet.

[0010] Preferably, a plurality of barbs are fixedly connected to the upper surface of the carrying plate, and each of the barbs is arranged at an angle, and the barbs are made of rubber material.

[0011] Preferably, the driving device comprises a speed regulating motor fixedly mounted on the base, the output end of the speed regulating motor is fixedly connected to a driving gear, the outer side of the screening tube is fixedly connected to a driven gear, and the driving gear is meshingly connected to the driven gear.

[0012] Preferably, the feed assembly comprises a feed pipe fixedly mounted on the container, and a carbon outlet groove is provided on a side of the feed pipe close to the screening assembly.

[0013] Preferably, a sewage pipe is fixedly mounted on the container and is in communication with the container, and a pipe cover is threadedly connected to the sewage pipe.

[0014] Preferably, the water supply assembly includes an electric water pump fixedly mounted on the base, the input end of the electric water pump is fixedly connected to a water inlet pipe and communicated therewith, the water inlet end of the water inlet pipe extends into the water storage chamber, the output end of the electric water pump is fixedly connected to a water outlet pipe, the water outlet pipe is fixedly connected to and communicated with the container, and the water outlet end of the water outlet pipe extends into the container, a water level sensor is fixedly mounted in the container, and the water level sensor is signal-connected to the electric water pump.

[0015] Preferably, the washing method comprises the following steps: S1: First, start the electric water pump. The input end of the electric water pump cooperates with the water inlet pipe to pump water from the base and send it into the container through the water outlet pipe. When the liquid level in the container rises to the set height, pour the coal to be screened from the feed port on the feed pipe. Some of the cleaner coal floats directly from the coal outlet trough under the buoyancy of the water and floats on the water surface. The rest of the coal that is contaminated with more coal slime or squeezed by gangue sinks to the carrying plate; S2: Start the speed regulating motor at the same time to drive the screen tube to rotate. Since the bearing plate is set in an inner concave shape, the gangue and coal gather in a ring shape on the inner side of the bearing plate near the screen tube. At this time, the rotating screen tube drives the push rod to rotate synchronously, pushing the coal and gangue to roll while gradually pushing them away from the bearing plate. The coal is washed by the water in the process of tumbling, and the attached coal slime is gradually washed away. The tumbling coal constantly hits the barbs on the tumbling path. The barbs made of flexible material can gradually scrape off the coal 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 circle by the push rod until it is separated from the bearing plate and sinks to the inner bottom of the container, completing the preliminary screening of coal and gangue. S3: At the same time, the rotating screening tube drives the moving block to rotate synchronously, and the guide groove on the moving block squeezes the convex parts on the multiple extension rods, so that the convex parts together with the extension rods and the corresponding mounting blocks slide relatively. In the process that the multiple convex parts synchronously slide along the guide groove from the highest point of the upward depression to the lowest point of the downward protrusion, the multiple extension rods together with the upper annular block move downward synchronously. Conversely, in the process that the multiple convex parts synchronously slide along the guide groove from the lowest point of the downward protrusion to the highest point of the upward depression, the multiple extension rods together with the upper annular block move upward synchronously. This cycle is repeated, so that the upper annular block can move up and down stably. When the upper annular block moves downward, part of the water and coal can be sucked into the screening tube of the device; S4: The coal after screening and preliminary cleaning mixed with a small amount of water falls into the screening tube, slides from the lower end of the screening tube to the guide plate, and the water in it falls into the water storage cavity along the water leakage hole on the guide plate to be recycled, and the coal slides along the guide plate to the outside of the base. Since the water in the container is mixed with other impurities, during the sliding of the coal on the guide plate, the water in the container fluctuates in a wave-like manner under the push of the floating component, so that part of the filtered water can be discharged from the water outlet intermittently, and the water filtered by the filter screen flows out along the hose and the flushing pipe. Since the lower pipe mouth of the flushing pipe faces the guide plate, the water flowing out of the flushing pipe just covers the coal sliding on the guide plate, washes it twice, and finally falls into the water storage cavity of the base from the water leakage hole; S5: With the operation of the device, the water in the container and the screened coal flow out through the screening pipe, and the water level sensor monitors the height of the liquid level in the container in real time. When the water level sensor detects that the liquid level is lower than the set value, the electric water pump starts to replenish water resources in the container to the set height to ensure the normal operation of the device.

[0016] The beneficial effects of the present invention are: The present invention adopts a technical means of cooperating with a screening component and a water flow. The screening component drives the coal and gangue on the carrying plate to move, and the barbs on the carrying plate are used to scrape off impurities on the coal and gangue. At the same time, a push rod is used to push the coal and gangue accumulated on the carrying 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. The device can complete the screening of coal and gangue with only a small amount of water resources, overcomes the shortcomings of the existing technology, and further improves the practicability of the device.

[0017] The present invention adopts the technical means of cooperating with the floating component and the screening pipe, and utilizes the rotation of the screening 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 component, thereby automatically completing the coal collection work and improving work efficiency.

[0018] The present invention adopts technical means of cooperating with a floating component and a discharging component. When the coal passes through the output channel, the floating component floats up and down, and part of the filtered water is intermittently sent to the top of the conveying channel to flush the screened coal again, flushing away the impurities on it, further improving the quality of the screened coal, and then improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram for displaying the internal structure of the screening barrel of the present invention; Figure 3 It is a three-dimensional structural schematic diagram for displaying the driving device of the present invention; Figure 4 It is a three-dimensional structural schematic diagram for displaying a water supply component of the present invention; Figure 5 It is a three-dimensional structural schematic diagram for displaying a floating assembly according to the present invention; Figure 6 It is an exploded schematic diagram of the present invention for showing the screen tube and the moving block; Figure 7 It is a three-dimensional structural schematic diagram for displaying a moving component of the present invention; Figure 8 It is a three-dimensional structural schematic diagram for displaying the discharging assembly of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram for displaying the internal structure of the base according to the present invention.

[0020] In the figure: 100, base; 200, bearing assembly; 300, screening assembly; 400, water supply assembly; 500, feeding assembly; 600, floating assembly; 700, discharging assembly; 201, container; 202, carrier plate; 203, barb; 301, screening tube; 302, push rod; 303, speed regulating motor; 304, driving gear; 305, driven gear; 401, electric water pump; 402, water inlet pipe; 403, water outlet pipe; 404, water level sensor; 501, feed pipe; 502, charcoal outlet trough; 601, annular guide rail; 602, lower annular block; 603, bellows; 604, upper annular block; 605, crossbar; 606, sleeve; 607, vertical bar; 608, spring; 609, moving assembly; 6091, moving block; 6092, guide groove; 6093, extension rod; 6094, mounting block; 701, guide plate; 702, water outlet; 703, hose; 704, flushing pipe; 705, filter screen; 706, sewage pipe; 707, pipe cover. DETAILED DESCRIPTION

[0021] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the present specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0022] like Figure 1 - Fig. 9 As shown, this embodiment provides a coal washing and processing equipment, including: A base 100 and a carrying assembly 200, the carrying assembly 200 is used to accommodate the coal to be screened, and is arranged on the upper side of the base 100, the carrying assembly 200 includes a container 201, the container 201 is fixedly installed on the base 100, a carrying plate 202 is fixedly installed on the inner bottom of the container 201, a screening assembly 300 is arranged on the base 100, the screening assembly 300 includes a screening tube 301, the lower end of the screening tube 301 is rotatably arranged on the base 100, the container 201 and the carrying plate 202 are both rotatably connected to the middle section of the screening tube 301, at least one push rod 302 is fixedly connected to the outer side of the screening tube 301, and a driving device for driving the screening tube 301 to rotate is arranged on the base 100, a water supply assembly 400 is arranged on the base 100, and the water outlet end of the water supply assembly 400 is arranged in the container 201, and a feeding assembly 500 is arranged on the container 201, and is used to transport the coal to be screened to the carrying plate 202.

[0023] 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 a set height, the coal to be screened is transported to the carrier plate 202 through the feed component 500. Some of the coal with a relatively clean surface directly floats to the water surface. During the floating process, the coal slime on the surface is preliminarily cleaned. The remaining coal with a large amount of coal slime or driven by gangue sinks to the carrier plate 202 together with the gangue. At the same time, the driving device is started, and the driving device drives the screening tube 301 to rotate. Since the carrier plate 202 is arranged in a concave shape, the gangue and coal are gathered in a ring shape on the inner side of the carrier plate 202. At a position close to the screening tube 301, the rotating screening tube 301 drives the push rod 302 to rotate synchronously. Since the push rod 302 is arranged at an angle, it can gradually push the coal and gangue away from the supporting plate 202 while pushing them to roll. The coal is washed by the water in the process of tumbling, and the attached coal slime is gradually washed away. At the same time, the coal is no longer squeezed by the gangue, and since its density is less than that of the water, it can float. The gangue is gradually pushed to the outer circle by the push rod 302 until it is separated from the supporting plate 202. Since its density is greater than that of the water, it can sink to the inner bottom of the container 201, thereby completing the coal screening operation under the premise of using only a small amount of water.

[0024] It should be noted that the base 100 is also provided with a water inlet and a sewage outlet for timely replacing the water resources in the water storage chamber. Since it is a common existing technology in life, it is not shown in the figure.

[0025] In a specific embodiment: a floating assembly 600 is provided in the container 201, and the floating assembly 600 includes an annular guide rail 601 fixedly installed on the edge of the upper pipe mouth of the screening pipe 301, a lower annular block 602 is rotatably connected to the annular guide rail 601, a bellows 603 is fixedly installed on the lower annular block 602, an upper annular block 604 is fixedly connected to the upper side of the bellows 603, at least two cross bars 605 are fixedly connected to the upper annular block 604, and each cross bar 605 is fixedly connected to a sleeve 606 at one end away from the upper annular block 604, and a corresponding number of vertical rods 607 are fixedly installed on the container 201, 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 at the lower side of the corresponding sleeve 606, and a moving assembly 609 for driving the upper annular block 604 to move up and down is provided on the screening pipe 301.

[0026] The working principle and beneficial effects of the above technical solution are as follows: the rotating screen 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, so that the sleeve 606 and the corresponding vertical bar 607 slide relative to each other, and the spring 608 and the bellows 603 are both compressed. On the contrary, when the upper annular block 604 moves downward to the specified position, it moves upward under the elastic force of the spring 608, and the bellows 603 is stretched. This cycle is repeated, so that the upper annular block 604 can move up and down repeatedly. While the screen tube 301 rotates, it drives the annular guide rail 601 to rotate synchronously, so that the annular guide rail 601 and the lower annular block 602 rotate relative to each other, and the bellows 603 will not be excessively twisted.

[0027] In a specific embodiment: the moving assembly 609 includes a moving block 6091 fixedly mounted on the screening tube 301, a guide groove 6092 is provided 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 portion, and the convex portion is slidably connected to the guide groove 6092, and a corresponding number of mounting blocks 6094 are fixedly connected to the lower annular block 602, and each mounting block 6094 is provided with a through groove for the corresponding extension rod 6093 to penetrate and slide.

[0028] The working principle and beneficial effects of the above technical solution are as follows: the rotating screen tube 301 drives the moving block 6091 to rotate synchronously, and the guide groove 6092 on the moving block 6091 squeezes the convex parts on the multiple extension rods 6093, so that the convex parts together with the extension rods 6093 and the corresponding mounting blocks 6094 slide relative to each other. Since the guide groove 6092 is arranged in a regular undulating shape, and the extension rods 6093 can only move in the vertical direction under the limiting effect of the sleeve 606, in the process that the multiple convex parts synchronously slide along the guide groove 6092 from the highest point of the upward depression to the lowest point of the downward protrusion, the multiple extension rods 6093 together with the upper annular block 604 move downward synchronously, and vice versa. In the process of sliding from the lowest point of the downward protrusion to the highest point of the upward depression, the plurality of extension rods 6093 move upward synchronously together with the upper annular block 604, and this cycle is repeated, so that the upper annular block 604 can move up and down stably. When the upper annular block 604 moves downward, part of the water and coal can be sucked into the screen pipe 301 of the device, and the coal can be discharged along the screen pipe 301, thereby reducing the amount of manual work. At the same time, in the process of its up and down movement, the water surface in the container 201 will produce wave-like fluctuations. 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 bellows 603, and prevent them from rotating with the rotation of the screen pipe 301, thereby ensuring the service life of the bellows 603.

[0029] It should be noted that the open guide groove 6092 can prevent coal slime or other impurities from being embedded therein and affecting the normal operation of the device.

[0030] In a specific embodiment, a hollow water storage chamber is provided inside the base 100, the lower end of the screen tube 301 is connected to the water storage chamber, a discharge assembly 700 is provided inside the base 100, and 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 provided directly below the screen tube 301, and the discharge side of the guide plate 701 extends outside the base 100, and the container 20 1 is provided with a water outlet 702, 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 on the upper side of the guide plate 701, and a filter screen 705 is fixedly installed on the water outlet 702.

[0031] 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 screening tube 301, slides from the lower end of the screening tube 301 to the guide plate 701, and the water in the coal falls into the water storage cavity along the water leakage hole on the guide plate 701 to be recycled, and the coal slides along 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 process of the coal sliding on the guide plate 701, the coal in the container 201 is The water body rises and falls in a wave-like manner under the push of the floating assembly 600, so that part of the water body can be intermittently discharged from the water outlet 702 after being filtered by the filter screen 705. The water body filtered by the filter screen 705 flows out along the hose 703 and the flushing pipe 704. Since the lower pipe mouth of the flushing pipe 704 is facing the guide plate 701, the water body flowing out of the flushing pipe 704 just covers the coal sliding down from the guide plate 701, and washes it twice, and finally falls into the water storage cavity of the base 100 from the leaking hole.

[0032] In a specific embodiment: a plurality of barbs 203 are fixedly connected to the upper surface of the carrier plate 202 , and each barb 203 is arranged at an angle, and the barb 203 is made of rubber material.

[0033] The working principle and beneficial effects of the above technical solution are as follows: the gangue and coal on the supporting plate 202 tumble under the pushing action of the push rod 302, and since the rotation direction of the push rod 302 is opposite to the inclination direction of the barb 203, the movement direction of the coal is also opposite to the inclination direction of the barb 203. The tumbling coal continuously hits the barb 203 on the tumbling path. The barb 203 made of flexible material can gradually scrape off the coal slime attached to the coal without excessively scratching the coal itself, thereby achieving the technical effect of cleaning the coal.

[0034] In a specific embodiment: the driving device includes a speed regulating motor 303 fixedly mounted on the base 100, the output end of the speed regulating motor 303 is fixedly connected to a driving gear 304, the outer side of the screening tube 301 is fixedly connected to a driven gear 305, and the driving gear 304 is meshingly connected with the driven gear 305.

[0035] The working principle and beneficial effects of the above technical solution are: 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 tube 301 to rotate synchronously.

[0036] In a specific embodiment, the feed assembly 500 includes a feed pipe 501 fixedly mounted on the container 201 , and a charcoal outlet groove 502 is provided on one side of the feed pipe 501 close to the screening assembly 300 .

[0037] The working principle and beneficial effects of the above technical solution are as follows: when feeding, the coal to be screened is poured into the feed port on the feed pipe 501 mechanically or manually, and some of the cleaner coal floats directly out of the coal outlet trough 502 under the buoyancy of the water body and floats on the water surface, while the rest of the coal that is contaminated with more coal slime or squeezed by gangue sinks to the supporting plate 202.

[0038] In a specific embodiment: a sewage pipe 706 is fixedly mounted on the container 201 and is in communication therewith, and a pipe cover 707 is threadedly connected to the sewage pipe 706 .

[0039] The working principle and beneficial effects of the above technical solution are: each time the residual media is screened, or when a large amount of gangue accumulates at the bottom of the container 201, the device is closed, the pipe cover 707 is opened, and the gangue and residual water in the container 201 are discharged from the sewage pipe 706.

[0040] In a specific embodiment: 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 the water inlet pipe 402 and communicated therewith, the water inlet end of the water inlet pipe 402 extends into the water storage chamber, the output end of the electric water pump 401 is fixedly connected to the 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 signal-connected to the electric water pump 401.

[0041] The working principle and beneficial effects of the above technical solution are as follows: the electric water pump 401 is started, and the input end of the electric water pump 401 cooperates with the water inlet pipe 402 to pump water from the base 100, and sends 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 and the screened coal flow out through the screening pipe 301. When the water level sensor 404 detects that the water level is too low, the electric water pump 401 is started to replenish water resources in the container 201 to the set height (the water level sensor 404 in the text is a prior art, and its working principle is not described in detail here).

[0042] The above describes an embodiment of the present invention, but this embodiment is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make many forms, all of which are protected by this embodiment.

Claims

1. A coal washing and processing equipment, characterized in that: include: A base (100) and a bearing assembly (200), wherein the bearing assembly (200) is used to contain coal to be screened and is arranged on the upper side of the base (100); the bearing assembly (200) comprises a container (201), the container (201) is fixedly mounted on the base (100), and a bearing plate (202) is fixedly mounted on the inner bottom of the container (201); A screening assembly (300) is arranged on the base (100), the screening assembly (300) comprises a screening tube (301), the lower end of the screening tube (301) is rotatably arranged on the base (100), the container (201) and the supporting plate (202) are both rotatably connected to the middle section of the screening tube (301), at least one push rod (302) is fixedly connected to the outer side of the screening tube (301), and a driving device for driving the screening tube (301) to rotate is arranged on the base (100); A water supply component (400) is arranged on the base (100), and a water outlet end of the water supply component (400) is arranged in the container (201); A feeding assembly (500) is arranged on the container (201) and is used to convey the coal to be screened onto the supporting plate (202).

2. A coal washing and processing equipment according to claim 1, characterized in that: A floating assembly (600) is arranged in the container (201), and the floating assembly (600) comprises an annular guide rail (601) fixedly mounted on the edge of the upper pipe opening of the screening pipe (301), a lower annular block (602) being rotatably connected to the annular guide rail (601), a bellows (603) being fixedly mounted on the lower annular block (602), an upper annular block (604) being fixedly connected to the upper side of the bellows (603), and at least two cross bars (605) being fixedly connected to the upper annular block (604), and each of the cross bars (605) being remote from the screening pipe (301). One end away from the upper annular block (604) is fixedly connected with a sleeve (606), and a number of vertical rods (607) corresponding to the number of the sleeves (606) are fixedly installed on the container (201). Each of the sleeves (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 at the lower side of the corresponding sleeve (606). The screening tube (301) is provided with a moving component (609) for driving the upper annular block (604) to move up and down.

3. A coal washing and processing equipment according to claim 2, characterized in that: The moving assembly (609) comprises a moving block (6091) fixedly mounted on the screen pipe (301), the moving block (6091) being provided with a guide groove (6092), an extension rod (6093) being fixedly connected to the lower side of each cross bar (605), the lower end of the extension rod (6093) having a convex portion, and the convex portion being slidably connected to the guide groove (6092), and a corresponding number of mounting blocks (6094) being fixedly connected to the lower annular block (602) corresponding to the extension rod (6093), and each mounting block (6094) being provided with a through groove for the corresponding extension rod (6093) to penetrate and slide into.

4. A coal washing and processing equipment according to claim 3, characterized in that: A hollow water storage cavity is provided inside the base (100), the lower end of the sieve tube (301) is in communication with the water storage cavity, a discharge assembly (700) is provided inside the base (100), the discharge assembly (700) comprises a guide plate (701) fixedly mounted inside the base (100), a plurality of water leakage holes are provided on the guide plate (701), a feed side of the guide plate (701) is provided directly below the sieve tube (301), a discharge side of the guide plate (701) extends outside the base (100), and a water outlet ( 702), 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 in communication with the water outlet (702), a flushing pipe (704) is fixedly mounted on the base (100), one end of the hose (703) away from the container (201) is in communication with the flushing pipe (704), and the flushing port of the flushing pipe (704) is located on the upper side of the guide plate (701), and a filter screen (705) is fixedly mounted on the water outlet (702).

5. A coal washing and processing equipment according to claim 4, characterized in that: A plurality of barbs (203) are fixedly connected to the upper surface of the carrier plate (202), and each barb (203) is arranged at an angle, and the barb (203) is made of rubber material.

6. The coal washing and processing equipment according to claim 5, characterized in that: The driving device comprises a speed regulating motor (303) fixedly mounted on the base (100); a driving gear (304) is fixedly connected to the output end of the speed regulating motor (303); a driven gear (305) is fixedly connected to the outer side of the screening tube (301); and the driving gear (304) is meshingly connected to the driven gear (305).

7. The coal washing and processing equipment according to claim 6, characterized in that: The feed assembly (500) comprises a feed pipe (501) fixedly mounted on the container (201), and a charcoal outlet groove (502) is provided on a side of the feed pipe (501) close to the screening assembly (300).

8. The coal washing and processing equipment according to claim 7, characterized in that: A sewage discharge pipe (706) is also fixedly mounted on the container (201) and is in communication with the container (201), and a pipe cover (707) is threadedly connected to the sewage discharge pipe (706).

9. The coal washing and processing equipment according to claim 8, characterized in that: The water supply assembly (400) comprises an electric water pump (401) fixedly mounted on the base (100); an 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 chamber; an 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); the water outlet end of the water outlet pipe (403) extends into the container (201); a water level sensor (404) is fixedly mounted in the container (201); and the water level sensor (404) is signal-connected to the electric water pump (401).

10. A method for washing coal using the coal washing and processing equipment according to claim 9, comprising the following steps: S1: First, the electric water pump (401) is started. 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 water into the container (201) through the water outlet pipe (403). When the liquid level in the container (201) rises to a set height, the coal to be screened is poured into the container from the feed port on the feed pipe (501). Some of the relatively clean coal directly floats out from the coal outlet trough (502) under the buoyancy of the water and floats on the water surface. The remaining coal that is contaminated with a lot of coal slime or squeezed by gangue sinks to the support plate (202); S2: The speed regulating motor (303) is started at the same time to drive the screen tube (301) to rotate. Since the support plate (202) is arranged in a concave shape, the gangue and coal are gathered in a ring shape on the inner side of the support plate (202) near the screen tube (301). At this time, the rotating screen tube (301) drives the push rod (302) to rotate synchronously, pushing the coal and gangue to roll while gradually pushing them away from the support plate (202). The coal is washed by the water during the rolling process. The attached coal slime is gradually washed away, and the tumbling coal continuously hits the barbs (203) on the tumbling path. The barbs (203) made of flexible material can gradually scrape away the coal slime attached to the coal without excessively scratching the coal itself, and at the same time, the coal slime is no longer squeezed by the gangue and can float up. The gangue is gradually pushed to the outer ring by the push rod (302) until it is separated from the supporting plate (202) and sinks to the inner bottom of the container (201), thereby completing the preliminary screening operation of the coal and the gangue; S3: At the same time, the rotating screening tube (301) drives the moving block (6091) to rotate synchronously, and the guide groove (6092) on the moving block (6091) squeezes the protrusions on the plurality of extension rods (6093), so that the protrusions together with the extension rods (6093) and the corresponding mounting blocks (6094) slide relative to each other. In the process that the plurality of protrusions synchronously slide along the guide groove (6092) from the highest point of the upward depression to the lowest point of the downward protrusion, the plurality of extension rods (6093) together with the upper annular block (604) move downward synchronously. Conversely, in the process that the plurality of protrusions synchronously slide along the guide groove (6092) from the lowest point of the downward protrusion to the highest point of the upward depression, the plurality of extension rods (6093) together with the upper annular block (604) move upward synchronously. This cycle is repeated, so that the upper annular block (604) can stably move up and down. When the upper annular block (604) moves downward, part of the water and coal can be sucked into the screening tube (301); S4: The coal after screening and preliminary cleaning is mixed with a small amount of water and falls into the screening tube (301), and slides from the lower end of the screening tube (301) to the guide plate (701). The water in the coal falls into the water storage chamber through the water leakage hole on the guide plate (701) and is recycled. The coal slides along the guide plate (701) to the outside of the base (100). Since the water in the container (201) is mixed with other impurities, the water in the container (201) is floating in the process of the coal sliding on the guide plate (701). The wave-like undulation under the driving action of the component (600) allows part of the filtered water to be discharged intermittently from the water outlet (702), and the water filtered by the filter screen (705) flows out along the hose (703) and the flushing pipe (704). Since the lower pipe opening of the flushing pipe (704) faces the guide plate (701), the water flowing out through the flushing pipe (704) just covers the coal sliding down from the guide plate (701), cleaning it for a second time, and finally falls into the water storage chamber of the base (100) from the water leakage hole; S5: As the device operates, the water in the container (201) and the screened coal flow out through the screening pipe (301), and 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 a set value, the electric water pump (401) starts to replenish water resources in the container (201) to the set height, so as to ensure the normal operation of the device.

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