Desliming type fine coal separation overflow clean coal grading mechanism

Abstract

The application discloses a desliming type fine coal separation overflow clean coal grading mechanism and relates to the technical field of clean coal grading. The desliming type fine coal separation overflow clean coal grading mechanism comprises cyclones, a feeding mechanism, a pump water mechanism, a pushing mechanism, a fine coal material processing assembly and a coarse coal material processing assembly. The cyclones are arranged in a linear array in multiple groups. An inlet box and a fine coal material processing box are arranged above the cyclones. A feeding pipe is connected to the flanges of the inlet mouths of the cyclones. The end of the feeding pipe is connected to and communicates with the bottom of the inlet box. The desliming type fine coal separation overflow clean coal grading mechanism can use high-pressure water flow to flush the coal material in the inlet box. The high-pressure water flow can ensure that the sludge attached to the coal material is completely separated from the coal material, thereby providing a guarantee for the quality of subsequent desliming separation operations. Meanwhile, the high-pressure water flow is used to drive the rotation of the spiral blades, thereby assisting the coal material to enter the cyclones through the feeding pipe and to be separated and processed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clean coal grading, in particular to a desliming type fine coal separation overflow clean coal grading mechanism. BACKGROUND

[0002] The application discloses a desliming type liquid-solid fluidized bed coarse slime separation overflow clean coal grading device, which comprises a separation grading barrel body, a fluid distributor and an overflow desliming device.

[0003] The above-mentioned clean coal grading device has the problems that coal is easy to block the inside when being discharged through the coarse clean coal discharge valve and the tailing valve, actual grading treatment efficiency is poor, and part of the slurry is still attached to the coal after being separated and is discharged together, actual desliming separation effect is limited. SUMMARY

[0004] The present application aims at least to solve one of the problems in the prior art, and provides a desliming type fine coal separation overflow clean coal grading mechanism, which can solve the problems of poor grading treatment efficiency and limited desliming separation effect of part of the clean coal grading structure.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a desliming type fine coal separation overflow clean coal grading mechanism, which comprises a cyclone, a feeding mechanism, a pump water mechanism, a pushing mechanism, a fine coal treatment assembly and a coarse coal treatment assembly.

[0006] The number of cyclones is multiple and arranged in a straight line array, an inlet box is arranged above the cyclones, a feeding pipe is flange-connected to an inlet of the cyclones, an end of the feeding pipe is connected and communicated with a bottom of the inlet box, a discharge pipe is flange-connected to an overflow port of the cyclones, and an end of the discharge pipe is connected and communicated with a side wall of the fine coal treatment box.

[0007] The pump water mechanism is arranged outside the feeding box and can deliver high-pressure water flow into the feeding box, the feeding mechanism is arranged between the feeding box and the feeding pipe and can deliver the coal by the high-pressure water flow delivered by the pump water mechanism, and the pushing mechanism is arranged on the feeding box and can assist the coal in the feeding box to enter the feeding pipe.

[0008] The fine coal processing assembly is arranged between the feeding box and the fine coal processing box and can clean the fine coal discharged from the overflow outlet of the cyclone by the water flow delivered by the pump water mechanism, and the coarse coal processing assembly is arranged below the cyclone and can filter the coarse coal discharged from the discharge outlet of the cyclone.

[0009] Preferably, the feeding mechanism comprises mounting rods, spiral blades and fans, the inner top of the feeding box is rotationally connected with mounting rods consistent with the number of the feeding pipes, the bottom end of the mounting rod extends to the inner side of the feeding pipe through the feeding box, the outer wall of the section of the mounting rod located in the inner side of the feeding box is fixedly connected with multiple groups of fans arranged in a ring array, and the outer wall of the section of the mounting rod located in the inner side of the feeding pipe is fixedly installed with spiral blades.

[0010] Preferably, the pump water mechanism comprises a water tank, a high-pressure water pump, a pump water pipe and a water inlet pipe, the top of the feeding box is provided with the water tank, the bottom of the water tank is fixedly connected with water inlet pipes consistent with the number of the mounting rods, the bottom end of the water inlet pipe extends to the inner side of the feeding box and faces the fans, the sidewall of the feeding box is fixedly installed with the high-pressure water pump, the output end of the high-pressure water pump is fixedly connected with the pump water pipe, and one end of the pump water pipe is connected with the outer wall of the water tank and communicates with the inside of the water tank.

[0011] Preferably, the pushing mechanism comprises rotating rods and rubber paddles, the inner top of the feeding box is rotationally connected with multiple groups of rotating rods, the multiple groups of rotating rods are respectively arranged between adjacent two groups of mounting rods, the bottom end of the rotating rod is rotationally connected to the inner bottom of the feeding box, and the rotating rod is close to the feeding box.

[0012] Preferably, the pushing mechanism further comprises a motor, a belt pulley and a transmission belt, the outer wall of each of the adjacent two groups of rotating rods is fixedly connected with a group of belt pulleys, the transmission belt is sleeved and mounted between the adjacent two groups of belt pulleys, the top of the feeding box is fixedly installed with the motor, and the output shaft of the motor extends to the inner side of the feeding box through a shaft coupling and is fixedly connected with the top end of one of the rotating rods.

[0013] Preferably, the fine coal processing assembly comprises a first filter plate, a communication pipe and a water distribution box, the inner wall of the fine coal processing box is embedded with the first filter plate arranged obliquely, a plurality of communication pipes are fixedly connected between the outer wall of the water tank and the top of the fine coal processing box, the communication pipes are in communication with the interiors of the water tank and the fine coal processing box, the inner side top of the fine coal processing box is fixedly installed with the water distribution box, a plurality of spray holes are formed in the bottom of the water distribution box, and the end of the communication pipe extends into the inner side of the water distribution box.

[0014] Preferably, the fine coal processing assembly further comprises a material blocking door and a water blocking plate, a discharge hole is formed in the outer wall of the fine coal processing box away from the cyclone, the discharge hole is above the first filter plate, the discharge hole is hingedly installed with the material blocking door capable of closing the discharge hole, a waste discharge hole is formed in the bottom of the fine coal processing box, the waste discharge hole is below the first filter plate, and the waste discharge hole is hingedly installed with the water blocking plate capable of closing the waste discharge hole.

[0015] Preferably, the coarse coal processing assembly comprises a coarse coal processing box, a second filter plate and a waste discharge pipe, the coarse coal processing box is fixedly installed at the discharge port of the cyclone, the inner wall of the coarse coal processing box is embedded with the second filter plate arranged obliquely, a discharge hole is formed in the front side of the coarse coal processing box, the discharge hole is above the second filter plate, a plurality of waste discharge pipes in communication with the interior of the coarse coal processing box are fixedly connected to the rear side of the coarse coal processing box, the waste discharge pipes are below the second filter plate, a base is fixedly installed at the bottom of the coarse coal processing box, an inlet is formed in the top of the feed box, and the inlet is hingedly installed with the feed door capable of closing the inlet.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] The desliming type fine coal separation overflow clean coal grading mechanism, by cooperation of the feed box, the feeding pipe, the feeding mechanism and the pump water mechanism, can utilize the high-pressure water flow to flush the coal in the feed box, compared with the ordinary structure, the high-pressure water flow can ensure that the mud attached to the coal is completely separated from the coal, thereby providing guarantee for the quality of subsequent desliming separation operation, and the high-pressure water flow is also used to drive the spiral blade to rotate, thereby assisting the coal to enter the cyclone through the feeding pipe for separation treatment, thereby effectively reducing the coal blockage, and providing guarantee for the efficiency and quality of coal treatment.

[0018] The desliming type fine coal separation overflow clean coal grading mechanism, by cooperation of the fine coal processing assembly and the coarse coal processing assembly, on the one hand, can perform secondary flushing and filtering on the fine coal discharged from the overflow port of the cyclone, thereby improving the quality of the fine coal product, and on the other hand, can perform screening treatment on the coarse coal discharged from the discharge port of the cyclone, thereby further removing the mud component, and improving the effect and quality of the mechanism in grading the fine coal separation overflow clean coal.

[0019] The desliming type fine coal separation overflow clean coal grading mechanism can stir the coal after entering the feed box, increase the contact area between the coal and the high-pressure water flow, improve the washing and desliming effect and efficiency, and can assist the feeding mechanism to feed the coal into the feeding pipe for processing, prevent the coal from being blocked and accumulated in the corner of the feed box, and improve the practicality. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below in combination with the drawings and embodiments:

[0021] Figure 1 It is a perspective view of the application;

[0022] Figure 2 It is a structure view of the feed box of the application;

[0023] Figure 3 It is an enlarged view of part A of the application;

[0024] Figure 4 It is a rear side view of the application;

[0025] Figure 5 It is a structure view of the fine coal treatment box of the application;

[0026] Figure 6 It is a rear view of the application.

[0027] Reference signs: 1, cyclone; 2, feed box; 3, feeding pipe; 4, feeding mechanism; 401, mounting rod; 402, spiral blade; 403, fan blade; 5, water pumping mechanism; 501, water tank; 502, high-pressure water pump; 503, water pumping pipe; 504, water inlet pipe; 6, pushing mechanism; 601, rotating rod; 602, motor; 603, rubber paddle; 604, belt pulley; 605, transmission belt; 7, fine coal treatment assembly; 701, first filter plate; 702, communication pipe; 703, water distribution tank; 704, material blocking door; 705, water blocking plate; 8, coarse coal treatment assembly; 801, coarse coal treatment box; 802, second filter plate; 803, waste discharge pipe; 9, fine coal treatment box; 10, discharge pipeline; 11, base; 12, feed door. DETAILED DESCRIPTION

[0028] This part will describe the specific embodiments of the application in detail, the preferred embodiments of the application are shown in the drawings, the role of the drawings is to supplement the description of the text part with figures, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the application, but it cannot be understood as a limitation on the protection scope of the application.

[0029] In the description of the application, it should be understood that the orientation description, such as the orientation or position relationship indicated by the upper, lower, front, rear, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0030] In the description of the application, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If the first, second is described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features or the order of the indicated technical features.

[0031] In the description of the application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the application in combination with the specific content of the technical scheme.

[0032] Please refer to Figures 1-6The application provides a technical scheme: a desliming type fine coal separation overflow clean coal grading mechanism, which comprises cyclones 1, a feeding mechanism 4, a water pumping mechanism 5, a pushing mechanism 6, a fine coal material processing assembly 7 and a coarse coal material processing assembly 8. The cyclones 1 are arranged in a linear array and in multiple groups, an upper portion of the cyclone 1 is provided with a feeding box 2 and a fine coal material processing box 9, a flange at an upper feeding port of the cyclone 1 is connected with a feeding pipe 3, an end of the feeding pipe 3 is connected with and communicates with a bottom of the feeding box 2, a flange at an overflow port of the cyclone 1 is connected with a discharge pipe 10, and an end of the discharge pipe 10 is connected with and communicates with a side wall of the fine coal material processing box 9. The water pumping mechanism 5 is arranged outside the feeding box 2 and can deliver high-pressure water flow into the feeding box 2, the feeding mechanism 4 is arranged between the feeding box 2 and the feeding pipe 3 and can deliver coal material by the high-pressure water flow delivered by the water pumping mechanism 5, and the pushing mechanism 6 is arranged on the feeding box 2 and can assist the coal material entering the feeding box 2 to pass into the feeding pipe 3. The fine coal material processing assembly 7 is arranged between the feeding box 2 and the fine coal material processing box 9 and can clean the fine coal material discharged from the overflow port of the cyclone 1 by the water flow delivered by the water pumping mechanism 5, and the coarse coal material processing assembly 8 is arranged below the cyclone 1 and can filter the coarse coal material discharged from the discharge port of the cyclone 1. The feeding mechanism 4 comprises mounting rods 401, spiral blades 402 and fan blades 403, the inside top of the feeding box 2 is rotationally connected with the mounting rods 401 consistent in number with the feeding pipe 3, the bottom end of the mounting rod 401 extends to the inside of the feeding pipe 3 through the feeding box 2, a plurality of groups of the fan blades 403 are fixedly connected with the outside wall of the section of the mounting rod 401 located inside the feeding box 2 and arranged in a ring array, the spiral blades 402 are fixedly installed on the outside wall of the section of the mounting rod 401 located inside the feeding pipe 3, the water pumping mechanism 5 comprises a water tank 501, a high-pressure water pump 502, a water pumping pipe 503 and a water inlet pipe 504, the upper portion of the feeding box 2 is provided with the water tank 501, the bottom of the water tank 501 and the top of the feeding box 2 are fixedly connected with the water inlet pipes 504 consistent in number with the mounting rods 401, the bottom end of the water inlet pipe 504 extends to the inside of the feeding box 2 and faces the fan blades 403, the high-pressure water pump 502 is fixedly installed on the side wall of the feeding box 2, the output end of the high-pressure water pump 502 is fixedly connected with the water pumping pipe 503, one end of the water pumping pipe 503 is connected with the outside wall of the water tank 501 and communicates with the inside of the water tank 501, can agitate the coal material after the coal material enters the feeding box 2, increase the contact area between the coal material and the high-pressure water flow, improve the washing and desliming effect and efficiency, simultaneously, can assist the feeding mechanism 4 to send the coal material into the feeding pipe 3 for processing, prevent the coal material from being blocked and accumulated in the corner of the feeding box 2, and provide guarantee for subsequent grading processing quality.

[0033] Further, the pushing mechanism 6 comprises a rotating rod 601 and a rubber push piece 603, a plurality of groups of rotating rods 601 are rotatably connected to the inner top of the feeding box 2, the plurality of groups of rotating rods 601 are respectively arranged between two adjacent groups of mounting rods 401, the bottom end of the rotating rod 601 is rotatably connected to the inner bottom of the feeding box 2, the rotating rod 601 is close to the feeding box, the pushing mechanism 6 further comprises a motor 602, a belt pulley 604 and a transmission belt 605, one group of belt pulleys 604 is fixedly connected to the outer wall of each of the two adjacent groups of rotating rods 601, the transmission belt 605 is sleeved and arranged between the two adjacent groups of belt pulleys 604, the motor 602 is fixedly installed at the top of the feeding box 2, the output shaft of the motor 602 extends into the inner side of the feeding box 2 through a shaft coupling and is fixedly connected to the top end of one group of rotating rods 601, the coal can be stirred after entering the feeding box 2, the contact area between the coal and the high-pressure water flow is increased, the washing and desilting effect and efficiency are improved, at the same time, the coal can be sent into the feeding pipe 3 by the feeding mechanism 4 for processing, the coal is prevented from being blocked and accumulated in the corner of the feeding box 2, the subsequent classification processing quality is guaranteed.

[0034] Further, the fine coal processing assembly 7 comprises a first filter plate 701, a communication pipe 702 and a water distribution box 703, the inner wall of the fine coal processing box 9 is embeddedly installed with the first filter plate 701 arranged obliquely, a plurality of communication pipes 702 are fixedly connected between the outer wall of the water tank 501 and the top of the fine coal processing box 9, the communication pipes 702 are in communication with the interiors of the water tank 501 and the fine coal processing box 9, the inner side top of the fine coal processing box 9 is fixedly installed with the water distribution box 703, a plurality of spray holes are formed in the bottom of the water distribution box 703, the end of the communication pipe 702 extends to the inner side of the water distribution box 703, the fine coal processing assembly 7 further comprises a material blocking door 704 and a water blocking plate 705, the outer wall of the fine coal processing box 9 away from the cyclone 1 is provided with a discharging opening, the discharging opening is located above the first filter plate 701, the discharging opening is hingedly installed with the material blocking door 704 which can close the discharging opening, the bottom of the fine coal processing box 9 is provided with a waste discharging opening, the waste discharging opening is located below the first filter plate 701, the waste discharging opening is hingedly installed with the water blocking plate 705 which can close the waste discharging opening, the coarse coal processing assembly 8 comprises a coarse coal processing box 801, a second filter plate 802 and a waste discharging pipe 803, the coarse coal processing box 801 is fixedly installed at the discharging opening of the cyclone 1, the inner wall of the coarse coal processing box 801 is embeddedly installed with the second filter plate 802 arranged obliquely, the front side of the coarse coal processing box 801 is provided with a discharging opening, the discharging opening is located above the second filter plate 802, the rear side of the coarse coal processing box 801 is fixedly connected with a plurality of waste discharging pipes 803 in communication with the interior of the coarse coal processing box 801, the waste discharging pipes 803 are located below the second filter plate 802, the bottom of the coarse coal processing box 801 is fixedly installed with the base 11, the top of the feeding box body 2 is provided with a feeding opening, the feeding opening is hingedly installed with the feeding door 12 which can close the feeding opening, the fine coal overflowed from the overflow opening of the cyclone 1 can be subjected to secondary washing and filtering, the quality of the fine coal product is improved, the coarse coal discharged from the discharging opening of the cyclone 1 can be subjected to screening and filtering, the slurry component in the coarse coal is further removed, and the effect and quality of the mechanism in grading the fine coal overflowed from the cyclone 1 are improved.

[0035] Working principle: open the feeding door 12, put the coal to be graded into the feeding box body 2 through the feeding opening at the top of the feeding box body 2, connect the input end of the high-pressure water pump 502 with an external water source through a pipeline, control the high-pressure water pump 502 to start, send high-pressure water flow into the water tank 501 through the pump water pipe 503, then send high-pressure water flow into the feeding box body 2 through the water inlet pipe 504, the high-pressure water flow washes the coal in the feeding box body 2 and drives the fan blade 403 to rotate, drives the installation rod 401 and the spiral blade 402 to rotate, the coal enters the feeding pipe 3 through the spiral blade 402 and then enters the cyclone 1, during which the motor 602 is controlled to start, drives the rubber paddle 603 to rotate through the transmission of the belt pulley 604 and the transmission belt 605, the rubber paddle 603 stirs the coal and drives the coal to tumble, and at the same time pushes the coal to the feeding pipe 3;

[0036] The cyclone 1 separates the coal, the fine coal is introduced into the fine coal treatment tank 9 through the overflow port and the discharge pipe 10 of the cyclone 1, and then falls onto the first filter plate 701 for filtration; part of the water in the water tank 501 is introduced into the fine coal treatment tank 9 through the communication pipe 702 and the spray holes at the bottom of the water distribution tank 703 to perform secondary washing on the fine coal; the filtered fine coal is discharged by opening the baffle door 704; and the slurry waste water is discharged by opening the water baffle 705.

[0037] The coarse coal is introduced into the coarse coal treatment tank 801 through the discharge port of the cyclone 1, and then falls onto the second filter plate 802; the second filter plate 802 filters the coarse coal and the slurry waste water; the coarse coal is discharged through the second filter plate 802; and the slurry waste water is discharged through the waste discharge pipe 803.

[0038] The above has described the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A desliming type fine coal separation overflow clean coal classifying mechanism, characterized in that, The utility model relates to a coal washing device, which comprises the following: a plurality of cyclones (1) arranged in a straight line, a feed tank (2) and a fine coal treatment tank (9) arranged above the cyclones (1), a feeding pipe (3) connected to the cyclones (1) through flanges, the end of the feeding pipe (3) connected to the bottom of the feed tank (2), a discharge pipe (10) connected to the cyclones (1) through flanges, the end of the discharge pipe (10) connected to the side wall of the fine coal treatment tank (9); a feeding mechanism (4), a water pumping mechanism (5) and a pushing mechanism (6), the water pumping mechanism (5) arranged outside the feed tank (2) and capable of pumping high-pressure water into the feed tank (2), the feeding mechanism (4) arranged between the feed tank (2) and the feeding pipe (3) and capable of pumping coal into the feeding pipe (3) with the help of the high-pressure water pumped by the water pumping mechanism (5), and the pushing mechanism (6) arranged on the feed tank (2) and capable of assisting the coal entering the feed tank (2) to enter the feeding pipe (3); a fine coal treatment assembly (7) arranged between the feed tank (2) and the fine coal treatment tank (9) and capable of cleaning the fine coal discharged from the overflow port of the cyclone (1) with the help of the water pumped by the water pumping mechanism (5), and a coarse coal treatment assembly (8) arranged below the cyclone (1) and capable of filtering the coarse coal discharged from the discharge port of the cyclone (1).

2. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 1, characterized in that: The feeding mechanism (4) comprises mounting rods (401), spiral blades (402) and fan blades (403), the inside top of the feed tank (2) is rotatably connected with mounting rods (401) consistent in number with the feeding pipes (3), the bottom end of each mounting rod (401) extends through the feed tank (2) and is arranged inside the feeding pipe (3), a plurality of fan blades (403) arranged in a ring array are fixedly connected to the outer wall of the section of each mounting rod (401) inside the feed tank (2), and a spiral blade (402) is fixedly installed on the outer wall of the section of each mounting rod (401) inside the feeding pipe (3).

3. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 2, characterized in that: The water pumping mechanism (5) comprises a water tank (501), a high-pressure water pump (502), a water pumping pipe (503) and a water inlet pipe (504), the top of the feed tank (2) is provided with the water tank (501), the bottom of the water tank (501) and the top of the feed tank (2) are fixedly connected with water inlet pipes (504) consistent in number with the mounting rods (401), the bottom end of each water inlet pipe (504) extends inside the feed tank (2) and faces the fan blades (403), the side wall of the feed tank (2) is fixedly installed with the high-pressure water pump (502), the output end of the high-pressure water pump (502) is fixedly connected with the water pumping pipe (503), and one end of the water pumping pipe (503) is connected to the outer wall of the water tank (501) and communicates with the inside of the water tank (501).

4. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 3, characterized in that: The pushing mechanism (6) comprises rotating rods (601) and rubber push plates (603), the inner top of the feeding box (2) is rotationally connected with a plurality of groups of rotating rods (601), the rotating rods (601) are respectively arranged between adjacent two groups of mounting rods (401), the bottom end of the rotating rod (601) is rotationally connected to the inner bottom of the feeding box (2), and the outer wall of the section of the rotating rod (601) close to the inner bottom of the feeding box (2) is fixedly connected with a plurality of groups of rubber push plates (603) arranged in an annular array.

5. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 4, characterized in that: The pushing mechanism (6) further comprises a motor (602), a belt pulley (604) and a transmission belt (605), the outer wall of each of the adjacent two groups of rotating rods (601) is fixedly connected with a group of belt pulleys (604), the transmission belt (605) is sleeved and mounted between the adjacent two groups of belt pulleys (604), the top of the feeding box (2) is fixedly installed with the motor (602), and the output shaft of the motor (602) extends into the inner side of the feeding box (2) through a shaft coupling and is fixedly connected with the top end of one of the rotating rods (601).

6. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 5, characterized in that: The fine coal material processing assembly (7) comprises a first filter plate (701), a communication pipe (702) and a water distribution box (703), the inner wall of the fine coal material processing box (9) is embeddedly installed with an inclined first filter plate (701), a plurality of groups of communication pipes (702) are fixedly connected between the outer wall of the water tank (501) and the top of the fine coal material processing box (9), the communication pipes (702) are in communication with the interiors of the water tank (501) and the fine coal material processing box (9), the inner top of the fine coal material processing box (9) is fixedly installed with a water distribution box (703), the bottom of the water distribution box (703) is provided with dense spray holes, and the end of the communication pipe (702) extends into the inner side of the water distribution box (703).

7. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 6, characterized in that: The fine coal material processing assembly (7) further comprises a material blocking door (704) and a water blocking plate (705), the outer wall of the side of the fine coal material processing box (9) away from the cyclone (1) is provided with a material discharging opening, the material discharging opening is located above the first filter plate (701), the material discharging opening is hingedly installed with the material blocking door (704) capable of closing the material discharging opening, the bottom of the fine coal material processing box (9) is provided with a waste discharging opening, the waste discharging opening is located below the first filter plate (701), and the waste discharging opening is hingedly installed with the water blocking plate (705) capable of closing the waste discharging opening.

8. The deslimed fine coal separation overflow clean coal classifying mechanism according to claim 7, characterized in that: The coarse coal treatment assembly (8) comprises a coarse coal treatment box (801), a second filter plate (802) and a waste pipe (803), the coarse coal treatment box (801) is fixedly installed at the discharge port of the cyclone (1), the inner wall of the coarse coal treatment box (801) is inlaidly installed with the second filter plate (802) which is arranged obliquely, a discharge opening is formed in the front side of the coarse coal treatment box (801), the discharge opening is located above the second filter plate (802), a plurality of groups of waste pipes (803) which are in communication with the inside of the coarse coal treatment box (801) are fixedly connected to the rear side of the coarse coal treatment box (801), the waste pipes (803) are located below the second filter plate (802), a base (11) is fixedly installed at the bottom of the coarse coal treatment box (801), a feeding port is formed in the top of the feeding box body (2), and a feeding door (12) which can close the feeding port is hingedly installed.

Images