CN117645339A - Sludge separation device for coal chemical wastewater treatment - Google Patents

Abstract

The invention relates to the technical field of sludge separation, and discloses a sludge separation device for coal chemical industry sewage treatment, which includes a main body and a liquid storage device. The liquid storage device is arranged below the main body. A transfer tank is provided on the top of the main body. It also includes a centrifugal mechanism. , the centrifugal mechanism is arranged inside the main body, and the centrifugal mechanism includes a sleeve, which is rotatably connected to the outer wall of the top of the main body, and a solid-liquid centrifuge cylinder is fixedly connected to the center of the bottom of the sleeve. The present invention uses the bracket to drive the thickness-limiting tube to rise inside the solid-liquid centrifuge barrel, and causes the leakage port to rise to the inside of the solid-liquid centrifuge barrel. When the solid-liquid centrifuge barrel stops rotating, the sludge deposits on the inner wall of the solid-liquid centrifuge barrel will Due to the high humidity and low adhesion, the phenomenon of collapse occurs, so that it is wrapped around the outer wall of the thickness-limited tube to avoid causing the sludge sediment layer to cover the bottom surface of the centrifuge. At the same time, the liquid left inside the solid-liquid centrifuge tube will be in the solid-liquid centrifuge tube. The bottom of the liquid centrifuge tube flows into the inside of the thickness limiting tube through the leakage port, thereby flowing out of the solid-liquid centrifuge tube.

Description

A sludge separation device for coal chemical wastewater treatment

Technical field

The invention relates to the technical field of sludge separation, specifically a sludge separation device for coal chemical wastewater treatment.

Background technique

Coal chemical industry is a comprehensive industrial process that uses mined coal as raw material and converts it into various fuels and chemicals through a series of chemical and chemical processes. As one of the traditional industries, coal chemical industry has always been characterized by high energy consumption, high emissions, and low efficiency. restrict the development of the industry. Although the introduction of new green coal chemical technology in recent years has improved the pollution situation, the serious environmental pollution caused by the coal chemical industry still cannot be effectively solved. When coal chemical wastewater is separated by centrifugal sludge, the sludge particles are affected by centrifugal force. , will be pushed to the centrifuge wall to form a solid sediment layer, while the separated liquid is located inside the solid sediment layer, close to the central axis of the centrifuge. Due to the centrifugal force, the separated liquid will move along the solid sediment layer. The flow occurs inside the layer and flows out along the central axis of the centrifuge.

Under the action of centrifugal force, the sludge particles will be pushed to the centrifuge wall to form a solid sediment layer. Generally, the sludge sediment layer will stick to the surface of the centrifuge. When the solid sediment layer is taken out, workers usually use The tool removes the separated sludge from the centrifuge. At the same time, when the centrifuge stops rotating, it will cause the sludge sediment layer to collapse and cover the bottom of the centrifuge, making it difficult for workers to remove the sludge sediment from deep areas. As a result, sludge deposits accumulate inside the centrifuge, causing problems such as unstable centrifuge speed, increased noise, and increased vibration in the device, and may even cause damage to the centrifuge.

Contents of the invention

The object of the present invention is to provide a sludge separation device for coal chemical wastewater treatment to solve the problems raised in the above background technology.

In order to solve the above technical problems, the present invention is implemented through the following technical solutions:

The invention is a sludge separation device for coal chemical wastewater treatment, which includes a main body and a liquid storage device. The liquid storage device is arranged below the main body. A transfer tank is provided on the top of the main body. It also includes:

The centrifugal mechanism is arranged inside the main body, and the centrifugal mechanism includes a sleeve, which is rotatably connected to the outer wall of the top of the main body, and a solid-liquid centrifuge cylinder is fixedly connected to the center of the bottom of the sleeve;

The thickness limiting mechanism is set inside the solid-liquid centrifuge cylinder. The thickness limiting mechanism includes three hydraulic lifting rods 2. The three hydraulic lifting rods 2 are fixedly connected to the inner wall of the main body. The output ends of the three hydraulic lifting rods 2 are fixedly connected with brackets. The bracket is fixedly connected to a finite-thickness pipe at the center of the top of the bracket;

The pushing mechanism is arranged inside the solid-liquid centrifuge cylinder. The pushing mechanism includes a push plate. The push plate is slidingly connected inside the solid-liquid centrifuge cylinder. There are three connecting rods fixedly connected to the bottom of the push plate.

Further, the top and bottom of the main body are connected, an extension frame is fixedly connected to the outer wall of the main body, and four supporting legs are fixedly connected to the bottom of the extension frame. The diameter of the liquid storage device is larger than that of the main body, and a movable hole is provided on the outer wall of the main body close to the liquid storage device.

Further, a transmission mechanism is provided on the top of the extension frame. The transmission mechanism includes two hydraulic lifting rods. The output ends of the two hydraulic lifting rods are fixedly connected to a motor. The output end of the motor is fixedly connected to a connecting closing cover. The bottom of the connecting closing cover is connected to the The tops of the solid-liquid sleeves are offset, and the bottom of the connecting closure cover is fixedly connected with a blocking block. The bottom of the connecting closure cover is fixedly connected with five connecting blocks. The five connecting blocks are symmetrically distributed with the connecting closure cover as the center.

Further, the centrifugal mechanism also includes a swivel ring, which is fixedly connected to the bottom of the casing, and the swivel ring is rotationally connected to the inner wall of the swivel groove. There are five shrinkage grooves on the top of the casing frame, and the five shrinkage grooves are arranged in a circumferential array with the casing frame as the center. , two springs are fixedly connected to the inner walls of the bottom of the five contraction grooves.

Further, a pressure block is fixedly connected to the top of the two springs. The pressure block is slidingly connected to the inner wall of the shrinkage groove. The top of the pressure block offsets the bottom of the connecting block. The solid-liquid centrifuge tube is set inside the main body. The top of the solid-liquid centrifuge tube is provided with a material inlet. port, and the outer wall of the plug is plugged into the feed port at the top of the solid-liquid centrifuge barrel.

Furthermore, the thickness limiting mechanism also includes two water leaks. The two water leaks are symmetrically distributed with the thickness limiting pipe as the center. Each hydraulic lifting rod 2 is distributed between the Meilinger hydraulic lifting rod 3. The top of the bracket is in contact with the solid-liquid The bottoms of the centrifuge tubes are in contact with each other, and the thickness-limiting tube slides through the bottom of the solid-liquid centrifuge tube.

Further, the push plate is slidingly connected to the outer wall of the thickness-limiting pipe. The pushing mechanism also includes three hydraulic lifting rods 3. The three hydraulic lifting rods 3 are fixedly connected to the inner wall of the main body. The output ends of the three hydraulic lifting rods 3 are fixedly connected with supporting rings.

Further, a fitting groove is provided at the top of the support ring, and the fitting rings are fixedly connected to the bottoms of the three connecting rods. The tops of the fitting rings offset the bottom of the swivel ring, the bottoms of the fitting rings are embedded inside the fitting grooves, and the connecting rods slide through The bottom of the solid-liquid centrifuge tube.

Further, a scraping mechanism is provided inside the main body. The scraping mechanism includes a control handle. The control handle is slidingly connected to the inner wall of the movable hole. The control handle is fixedly connected to a connecting ring on one side inside the main body. There are three expansion rings fixedly connected to the top of the connecting ring. There are three expansion scraping blades in a circular array with the connecting ring as the center, and the outer wall of the connecting ring offsets the inner wall of the main body.

The invention has the following beneficial effects:

(1) When the quick separation of the present invention is completed, the separated sludge deposits will stick to the inner wall of the solid-liquid centrifuge barrel. The hydraulic lifting rod 2 is activated to drive the thickness-limiting tube to rise inside the solid-liquid centrifuge barrel through the bracket, and the leakage port is raised. When the solid-liquid centrifuge cylinder stops rotating, the sludge deposits on the inner wall of the solid-liquid centrifuge cylinder will collapse due to high humidity and low adhesion, causing them to wrap around the thickness-limited tube. The outer wall prevents the sludge sediment layer from covering the bottom surface of the centrifuge. At the same time, the liquid left inside the solid-liquid centrifuge barrel will flow into the thickness limiting tube through the leakage port at the bottom of the solid-liquid centrifuge barrel, thereby flowing out of the solid-liquid centrifuge barrel.

(2) After the solid-liquid centrifuge of the present invention is stationary, the hydraulic lifting rod 3 drives the supporting ring to rise, so that the fitting groove is sleeved on the outer wall of the fitting ring, thereby driving the connecting rod and the push plate to rise inside the solid-liquid centrifuge, and the dirt is removed. The mud sediment is pushed to the top of the solid-liquid centrifuge barrel, thereby facilitating the movement of the sludge sediment at the bottom of the solid-liquid centrifuge barrel to the top of the main body for cleaning, and avoiding the accumulation of difficult-to-remove sludge sediment inside the solid-liquid centrifuge barrel. This leads to the possibility of problems such as unstable solid-liquid centrifuge speed, increased noise, and intensified vibration in the device. At the same time, after the sludge sediment is pushed out of the solid-liquid centrifuge through the push plate, the pushed-out sludge sediment will lose its connection with the solid-liquid centrifuge. The squeezing force of the inner wall of the cylinder will be dispersed into the collection devices placed on both sides of the main body, thereby improving the practicability of the device.

(3) In the present invention, after the coal chemical industry sewage is added to the inside of the solid-liquid centrifuge barrel, the motor is driven down through the hydraulic lifting rod, so that the connecting closing cover and the plug block seal the inlet opened at the top of the solid-liquid centrifuge barrel, and the connecting closing cover is lowered. When the connecting block is against the top of the pressure block, the shrinking groove is driven to slide inside the shrinking groove, and the spring is compressed at the same time, so that the connecting block is stuck inside the shrinking groove, and the motor drives the connecting closing cover to rotate while driving the sleeve. The solid-liquid centrifuge drum rotates inside the main body to separate the internal coal chemical wastewater from solid and liquid. The liquid is thrown into the main body through the structure set inside the solid-liquid centrifuge drum, so that the liquid drips along the inner wall of the main body. The liquid is collected inside the liquid storage device to prevent sewage from polluting the external environment.

(4) The present invention covers the top of the shrink tank with a pressing block to prevent the sludge deposits inside the solid-liquid centrifuge cylinder from entering the shrink tank and causing blockage. When the device is being cleaned, it can be controlled by The handle moves inside the movable hole, and the expansion scraper drives the three expansion scrapers to rotate on the inner wall of the main body, thereby scraping and cleaning the inside of the main body, which improves the practicality of the device.

Of course, any product implementing the present invention does not necessarily need to achieve all the above advantages at the same time.

Description of drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the drawings needed to describe the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention and are not relevant to the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

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

Figure 2 is an overall cross-sectional view of the present invention;

Figure 3 is a schematic diagram of the main body structure of the present invention;

Figure 4 is a schematic diagram of the internal structure of the main body of the present invention;

Figure 5 is a schematic structural diagram of the centrifugal mechanism of the present invention;

Figure 6 is a schematic structural diagram of the scraping mechanism of the present invention;

Figure 7 is an enlarged view of point A in Figure 5;

Figure 8 is an enlarged view of B in Figure 6.

In the drawings, the parts represented by each number are listed as follows:

In the picture: 1. Main body; 101. Extension frame; 102. Supporting legs; 103. Movable hole; 104. Liquid storage device; 105. Transfer tank; 2. Transmission mechanism; 201. Hydraulic lifting rod one; 202. Motor; 203 , connect the closing cover; 204, connect the block; 205, block; 3, centrifugal mechanism; 301, solid-liquid centrifuge; 302, sleeve; 303, swivel; 304, shrinkage groove; 305, spring; 306, pressure Block; 4. Thickness limiting mechanism; 401. Hydraulic lifting rod two; 402. Bracket; 403. Thickness limiting pipe; 404. Water leak; 5. Pushing mechanism; 501. Hydraulic lifting rod three; 502. Support ring; 503. Fitting groove; 504, fitting ring; 505, connecting rod; 506, push plate; 6, scraping mechanism; 601, control handle; 602, connecting ring; 603, expansion scraper blade.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Embodiment 1, please refer to Figures 1 to 8. The present invention is a sludge separation device for coal chemical industry sewage treatment, which includes a centrifugal mechanism 3. The centrifugal mechanism 3 is arranged inside the main body 1. The centrifugal mechanism 3 includes a sleeve. 302. The sleeve 302 is rotatably connected to the top outer wall of the main body 1. A solid-liquid centrifuge cylinder 301 is fixedly connected to the center of the bottom of the sleeve 302. The centrifugal mechanism 3 also includes a swivel 303. The swivel 303 is fixedly connected to the bottom of the sleeve 302 and rotates. The ring 303 is rotatably connected to the inner wall of the rotating groove 105. Five shrinking grooves 304 are provided on the top of the sleeve 302. The five shrinking grooves 304 are arranged in a circumferential array with the sleeve 302 as the center. Two springs are fixedly connected to the bottom inner walls of the five shrinking grooves 304. 305. The tops of the two springs 305 are fixedly connected with a pressure block 306. The pressure block 306 is slidingly connected to the inner wall of the shrinkage groove 304. The top of the pressure block 306 offsets the bottom of the connecting block 204. The solid-liquid centrifuge 301 is set inside the main body 1. There is an inlet at the top of the centrifuge tube 301, and the outer wall of the plug 205 is plugged into the inlet at the top of the solid-liquid centrifuge tube 301. The liquid left inside the solid-liquid centrifuge tube 301 will pass through the leakage port 404 at the bottom of the solid-liquid centrifuge tube 301. Flows into the inside of the thickness limiting tube 403, thereby flowing out of the solid-liquid centrifuge cylinder 301;

The thickness limiting mechanism 4 is arranged inside the solid-liquid centrifuge 301. The thickness limiting mechanism 4 includes three hydraulic lifting rods 401. The three hydraulic lifting rods 401 are fixedly connected to the inner wall of the main body 1. The three hydraulic lifting rods 401 The second 401 output end is fixedly connected to a bracket 402, and the top center of the bracket 402 is fixedly connected to a limited thickness pipe 403. The thickness limiting mechanism 4 also includes two leaks 404, and the two leaks 404 are symmetrically distributed with the thickness limit pipe 403 as the center. , each hydraulic lift rod 401 is distributed between the Meilinger hydraulic lift rods 3 501 , the top of the bracket 402 is against the bottom of the solid-liquid centrifuge 301 , the thickness limiter tube 403 slides through the bottom of the solid-liquid centrifuge 301 , and the hydraulic lift is started. The second rod 401 drives the thickness-limiting tube 403 to rise inside the solid-liquid centrifuge tube 301 through the bracket 402, and causes the water leakage port 404 to rise to the inside of the solid-liquid centrifuge tube 301;

The pushing mechanism 5 is arranged inside the solid-liquid centrifuge 301. The pushing mechanism 5 includes a push plate 506. The push plate 506 is slidingly connected inside the solid-liquid centrifuge 301. There are three connecting rods 505 fixedly connected to the bottom of the push plate 506. The push plate 506 is slidingly connected to the outer wall of the thickness limiting pipe 403. The pushing mechanism 5 also includes three hydraulic lift rods 501. The three hydraulic lift rods 501 are fixedly connected to the inner wall of the main body 1. The output ends of the three hydraulic lift rods 501 are fixedly connected. There is a support ring 502, and a fitting groove 503 is provided at the top of the support ring 502. The bottom of the three connecting rods 505 is fixedly connected with a fitting ring 504. The top of the fitting ring 504 offsets the bottom of the swivel 303, and the bottom of the fitting ring 504 is The grooves 503 are embedded inside, and the connecting rod 505 slides through the bottom of the solid-liquid centrifuge tube 301. After the solid-liquid centrifuge tube 301 is stationary, the hydraulic lift rod 3 501 drives the supporting ring 502 to rise, so that the fitting groove 503 is sleeved on the outer wall of the fitting ring 504. , thereby driving the connecting rod 505 and the push plate 506 to rise inside the solid-liquid centrifuge tube 301, pushing the sludge sediment to the top of the solid-liquid centrifuge tube 301, thereby facilitating the movement of the sludge sediment at the bottom of the solid-liquid centrifuge tube 301 to The top of the main body 1 is cleaned, and the sludge sediments are pushed out of the solid-liquid centrifuge tube 301 through the push plate 506. The pushed sludge sediments will lose the force of squeezing against the inner wall of the solid-liquid centrifuge tube 301, and will be dispersed to both sides of the main body 1. placed inside the collection device.

When in use, when the separation is about to end, the separated sludge deposits will stick to the inner wall of the solid-liquid centrifuge tube 301. The hydraulic lifting rod 401 is started to drive the thickness limiting tube 403 through the bracket 402 to rise inside the solid-liquid centrifuge tube 301, and make the The leakage port 404 rises to the inside of the solid-liquid centrifuge tube 301. When the solid-liquid centrifuge tube 301 stops rotating, the sludge deposits on the inner wall of the solid-liquid centrifuge tube 301 will collapse due to high humidity and low adhesion, causing the solid-liquid centrifuge tube 301 to stop rotating. It is wrapped around the outer wall of the thickness-limiting tube 403 to prevent the sludge sediment layer from covering the bottom surface of the centrifuge. At the same time, the liquid left inside the solid-liquid centrifuge tube 301 will flow into the thickness-limiting tube through the leakage port 404 at the bottom of the solid-liquid centrifuge tube 301. Inside the tube 403, the solid-liquid centrifuge tube 301 flows out. After the solid-liquid centrifuge tube 301 is stationary, the support ring 502 is driven up through the hydraulic lift rod 3 501, so that the fitting groove 503 is sleeved on the outer wall of the fitting ring 504, thereby driving the connecting rod 505 The push plate 506 rises inside the solid-liquid centrifuge tube 301 and pushes the sludge sediment to the top of the solid-liquid centrifuge tube 301, thereby facilitating the movement of the sludge sediment at the bottom of the solid-liquid centrifuge tube 301 to the top of the main body 1 for cleaning. At the same time, after the sludge sediments are pushed out of the solid-liquid centrifuge cylinder 301 through the push plate 506, the pushed sludge sediments will lose the force of squeezing against the inner wall of the solid-liquid centrifuge cylinder 301, and will be dispersed into the collection devices placed on both sides of the main body 1 .

Embodiment 2, please refer to Figures 1 to 8, including a main body 1 and a liquid storage device 104. The liquid storage device 104 is arranged below the main body 1. A transfer groove 105 is provided on the top of the main body 1. The top and bottom of the main body 1 are connected. 1. An extension frame 101 is fixedly connected to the outer wall, and four support legs 102 are fixedly connected to the bottom of the extension frame 101. The diameter of the liquid storage device 104 is larger than that of the main body 1. A movable hole 103 is provided on the outer wall of the main body 1 close to the liquid storage device 104;

A transmission mechanism 2 is provided on the top of the extension frame 101. The transmission mechanism 2 includes two hydraulic lifting rods 201. The output ends of the two hydraulic lifting rods 201 are fixedly connected to a motor 202. The output end of the motor 202 is fixedly connected to a connecting closure cover 203. The bottom of the connecting closure cover 203 is against the top of the solid-liquid sleeve 302. The bottom of the connecting closure cover 203 is fixedly connected with a plug 205. The bottom of the connecting closure cover 203 is fixedly connected with five connecting blocks 204. The five connecting blocks 204 are used to connect the closure. The cover 203 is distributed symmetrically about the center. The hydraulic lift rod 201 drives the motor 202 to descend, so that the connecting closing cover 203 and the plug 205 seal the inlet opened at the top of the solid-liquid centrifuge barrel 301. When the connecting closing cover 203 descends, the connecting closing cover 203 is lowered. The clamping block 204 is against the top of the pressing block 306, driving the shrinking slot 304 to slide inside the shrinking slot 304, and at the same time compressing the spring 305, so that the connecting clamping block 204 is stuck inside the shrinking slot 304, and the motor 202 drives the connecting closing cover 203 The rotation simultaneously drives the sleeve 302 and the solid-liquid centrifuge tube 301 to rotate inside the main body 1 to perform centrifugal solid-liquid separation of the internal coal chemical wastewater;

There is a scraping mechanism 6 inside the main body 1. The scraping mechanism 6 includes a control handle 601. The control handle 601 is slidingly connected to the inner wall of the movable hole 103. The control handle 601 is fixedly connected to a connecting ring 602 on one side inside the main body 1. The connecting ring There are three expansion scraping blades 603 fixedly connected to the top of 602. The three expansion scraping blades 603 are in a circular array with the connecting ring 602 as the center. The outer wall of the connecting ring 602 offsets the inner wall of the main body 1. By controlling the handle 601 to move inside the movable hole 103, the expansion The scraping blade 603 drives three expansion scraping blades 603 to rotate on the inner wall of the main body 1, thereby scraping and cleaning the inside of the main body 1.

During use, after coal chemical wastewater is added into the solid-liquid centrifuge tube 301, the motor 202 is driven down through the hydraulic lifting rod 201, so that the connecting closing cover 203 and the blocking block 205 seal the inlet opened at the top of the solid-liquid centrifuge tube 301. When the connection closing cover 203 is lowered, the connection block 204 is pressed against the top of the pressure block 306 to drive the shrinking groove 304 to slide inside the shrinking groove 304, and at the same time the spring 305 is compressed, so that the connection block 204 is stuck inside the shrinking groove 304. , the motor 202 drives the connecting closing cover 203 to rotate and at the same time drives the sleeve 302 and the solid-liquid centrifuge 301 to rotate inside the main body 1 to centrifuge the solid-liquid separation of the internal coal chemical wastewater, and pass the liquid through the solid-liquid centrifuge 301. The structure is thrown into the interior of the main body 1, so that the liquid drips along the inner wall of the main body 1 and falls inside the liquid storage device 104 for collection, and the top of the shrinkage groove 304 is covered by the pressing block 306 to avoid damage to the inside of the solid-liquid centrifuge cylinder 301 The sludge deposits enter the shrink tank 304 and cause blockage. When the device is cleaning, the control handle 601 can be controlled to move inside the movable hole 103, and the expansion scraper 603 drives the three expansion scrapers 603 to The inner wall of the main body 1 rotates, thereby scraping and cleaning the inside of the main body 1 .

The preferred embodiments of the invention disclosed above are only intended to help illustrate the invention. The preferred embodiments do not describe all details, nor do they limit the invention to the specific implementations described. Obviously, many modifications and variations are possible in light of the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (9)

1. A sludge separation device for coal chemical wastewater treatment, including a main body (1) and a liquid storage device (104). The liquid storage device (104) is arranged below the main body (1), and the top of the main body (1) There is a transfer slot (105), which is characterized in that it also includes: Centrifugal mechanism (3), the centrifugal mechanism (3) is arranged inside the main body (1), the centrifugal mechanism (3) includes a sleeve (302), the sleeve (302) is rotatably connected to the main body (1) On the top outer wall, a solid-liquid centrifuge tube (301) is fixedly connected to the center of the bottom of the rack (302); Thickness limiting mechanism (4). The thickness limiting mechanism (4) is arranged inside the solid-liquid centrifuge cylinder (301). The thickness limiting mechanism (4) includes three hydraulic lifting rods (401). The two lifting rods (401) are fixedly connected to the inner wall of the main body (1). The three output ends of the two hydraulic lifting rods (401) are fixedly connected with brackets (402). There is a limited fixed connection at the top center of the brackets (402). thick tube(403); The pushing mechanism (5) is arranged inside the solid-liquid centrifuge (301). The pushing mechanism (5) includes a push plate (506), and the push plate (506) is slidably connected to the solid-liquid centrifuge cylinder (301). Inside the liquid centrifuge barrel (301), three connecting rods (505) are fixedly connected to the bottom of the push plate (506). 2. A sludge separation device for coal chemical wastewater treatment according to claim 1, characterized in that: the top and bottom of the main body (1) are connected, and an extension frame (101) is fixedly connected to the outer wall of the main body (1). ), the bottom of the extension frame (101) is fixedly connected with four supporting legs (102), the diameter of the liquid storage device (104) is larger than the main body (1), and the outer wall of the main body (1) is close to the liquid storage device (104) A movable hole (103) is provided at one place. 3. A sludge separation device for coal chemical wastewater treatment according to claim 2, characterized in that: a transmission mechanism (2) is provided on the top of the extension frame (101), and the transmission mechanism (2) includes Two hydraulic lift rods (201), the output ends of the two hydraulic lift rods (201) are fixedly connected to a motor (202), and the output ends of the motor (202) are fixedly connected to a connecting closure cover (203), so The bottom of the connection closure cover (203) is against the top of the solid-liquid sleeve (302). The bottom of the connection closure cover (203) is fixedly connected with a blocking block (205). The bottom of the connection closure cover (203) is fixedly connected with five blocks. There are three connecting blocks (204), and the five connecting blocks (204) are symmetrically distributed with the connecting closing cover (203) as the center. 4. A sludge separation device for coal chemical wastewater treatment according to claim 3, characterized in that: the centrifugal mechanism (3) further includes a swivel (303), and the swivel (303) is fixedly connected to The bottom of the sleeve (302), and the swivel (303) is rotationally connected to the inner wall of the rotating groove (105). There are five shrinking grooves (304) on the top of the sleeve (302), and the five shrinking grooves (304) are provided at the top of the sleeve (302). 304) With the sleeve frame (302) as the central circumferential array, two springs (305) are fixedly connected to the bottom inner walls of the five contraction grooves (304). 5. A sludge separation device for coal chemical wastewater treatment according to claim 4, characterized in that: the tops of the two springs (305) are fixedly connected with pressure blocks (306), and the pressure blocks (306) It is slidingly connected to the inner wall of the shrinking groove (304), and the top of the pressure block (306) offsets the bottom of the connecting block (204). The solid-liquid centrifuge tube (301) is arranged inside the main body (1). A feed inlet is provided at the top of the barrel (301), and the outer wall of the plug (205) is plugged into the feed inlet at the top of the solid-liquid centrifuge barrel (301). 6. A sludge separation device for coal chemical wastewater treatment according to claim 5, characterized in that: the thickness limiting mechanism (4) further includes two water leakage ports (404), and the two water leakage ports (404) 404) is symmetrically distributed with the thickness limiting tube (403) as the center, each of the two hydraulic lifting rods (401) is distributed between the three hydraulic lifting rods (501) of Meilinge, and the top of the bracket (402) is in contact with the solid The bottoms of the liquid centrifuge cylinder (301) are in contact with each other, and the thickness limiting tube (403) slides through the bottom of the solid-liquid centrifuge cylinder (301). 7. A sludge separation device for coal chemical wastewater treatment according to claim 6, characterized in that: the push plate (506) is slidingly connected to the outer wall of the thickness-limiting pipe (403), and the pushing mechanism (5) It also includes three hydraulic lifting rods three (501). The three hydraulic lifting rods three (501) are fixedly connected to the inner wall of the main body (1). The output ends of the three hydraulic lifting rods three (501) are fixedly connected with support rings. (502). 8. A sludge separation device for coal chemical wastewater treatment according to claim 7, characterized in that: a fitting groove (503) is provided on the top of the support ring (502), and three connecting rods (505) ) is fixedly connected with a fitting ring (504) at the bottom, the top of the fitting ring (504) offsets the bottom of the swivel (303), and the bottom of the fitting ring (504) is embedded inside the fitting groove (503), The connecting rod (505) slides through the bottom of the solid-liquid centrifuge barrel (301). 9. A sludge separation device for coal chemical wastewater treatment according to claim 8, characterized in that: a scraping mechanism (6) is provided inside the main body (1), and the scraping mechanism (6) includes There is a control handle (601). The control handle (601) is slidingly connected to the inner wall of the movable hole (103). The control handle (601) is fixedly connected to a connecting ring (602) on one side inside the main body (1). Three expansion scraping blades (603) are fixedly connected to the top of the connecting ring (602). The three expansion scraping blades (603) are in a circular array with the connecting ring (602) as the center. The outer wall of the connecting ring (602) is in contact with the main body (602). 1) The inner walls offset each other.