Petrochemical industry production sewage treatment device

Abstract

The invention discloses a petrochemical industry production sewage treatment device, and relates to the technical field of petrochemical industry sewage treatment, the petrochemical industry production sewage treatment device comprises an air floatation tank, the top of the air floatation tank is fixedly provided with a fixed plate, the fixed plate is used for installing an aeration device, the petrochemical industry production sewage treatment device also comprises a collection tank, the collection tank is arranged in the air floatation tank, and the aeration device is arranged in the collection tank. A drainage pipe is arranged on the outer wall of the collecting tank and fixedly penetrates through the inner wall of the air floatation tank; the loading plate is fixedly mounted at the top of the collecting tank; the rotating roller is rotationally mounted on the inner wall of the loading plate; the chain wheel is fixedly mounted on the circumferential surface of the rotating roller; through the inclined surface of the scum scraping plate, the advancing resistance of the scum scraping plate in oily sewage can be obviously reduced, oily scum adhered in the collecting tank channel can be scraped, and the scum collecting effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of petrochemical sewage treatment, and specifically to a sewage treatment device for petrochemical production. Background Art

[0002] The sewage treatment device for petrochemical production is a dedicated system for treating high-concentration, highly toxic, and difficult-to-degrade industrial wastewater generated during petroleum refining and chemical production. Its core goal is to remove oils, organic substances, heavy metals, and toxic substances in the wastewater to ensure that the effluent meets the environmental protection discharge or reuse standards.

[0003] The patent with the patent announcement number CN222498776U relates to a sewage treatment device for petrochemical production. The sewage treatment device for petrochemical production includes: an oil skimming tank. One side wall surface of the oil skimming tank is fixedly connected with a side plate. The top surface of the side plate is bolted with a rack. A chute is longitudinally opened on the upper surface of the side plate at a position on one side of the rack. A sliding seat is slidably connected inside the chute. The top of the sliding seat is installed with a third motor through a connecting block. The output end of the third motor is fixedly connected with a gear. The gear meshes with the rack. One side wall surface of the sliding seat is welded with a vertical frame through a connecting plate. A threaded rod is rotatably connected to the surface of the vertical frame. The sewage treatment device for petrochemical production provided by this patent has the advantage of being able to carefully clean the oil stains attached to the inner wall of the oil skimming tank automatically.

[0004] In the above patent, it has the advantage of improving the cleaning effect. However, in petrochemical sewage treatment, it is necessary to separate the floating scum for treatment. During the collection process, the oily floating scum in petrochemical sewage is likely to adhere to the inner wall of the collection channel, resulting in channel blockage and affecting the overall treatment efficiency and cleaning effect. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a sewage treatment device for petrochemical production, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A sewage treatment device for petrochemical production, including an air flotation tank, on the top of the air flotation tank, a fixed plate is fixedly installed, and the fixed plate is used to install an aeration device. Start the aeration device on the fixed plate, which releases microbubbles at the bottom of the sewage. The microbubbles adhere to the surface of the suspended solids, reducing their density and floating to the liquid surface with the bubbles to form a scum layer. It also includes: a collection tank, which is arranged inside the air flotation tank, and a drain pipe is arranged on the outer wall of the collection tank, and the drain pipe fixedly penetrates the inner wall of the air flotation tank; a loading plate, which is fixedly installed on the top of the collection tank; a rotating roller, which is rotatably installed on the inner wall of the loading plate; a sprocket, which is fixedly installed on the circumferential surface of the rotating roller; a chain, which is arranged on the outer wall of the sprocket, and the chain meshes with the sprocket; a slag scraping plate, which is fixedly installed on the outer wall of the chain, and a slope is opened on the side of the slag scraping plate close to the collection tank. The slope of the slag scraping plate can scrape the oily scum adhering to the inner wall of the collection tank passage during movement, avoiding blockage caused by long-term accumulation in the passage.

[0007] According to the above technical solution, a pulley is arranged on the circumferential surface of the rotating roller, and the pulley is used for the rotating roller to be connected with the motor through belt drive. Start the motor, drive the rotating roller to rotate through belt drive, and the rotating roller drives the chain to move in a cycle through the sprocket.

[0008] According to the above technical solution, a rotating plate is rotatably installed on the inner wall of the collection tank. The slag scraping plate contacts the side of the rotating plate away from the T-shaped block during movement. At this time, the slag scraping plate pushes the rotating plate to rotate downward, and a first torsion spring is arranged between the rotating plate and the collection tank.

[0009] According to the above technical solution, a T-shaped block is fixedly installed at the bottom of the rotating plate, a limiting frame is fixedly installed on the inner wall of the collection tank, and the T-shaped block contacts the top of the inner wall of the limiting frame. The rotating plate drives the T-shaped block to rotate synchronously, and the T-shaped block rotates and disengages from the contact with the limiting frame.

[0010] According to the above technical solution, a collection device for collecting scum is arranged on the loading plate, and an auxiliary device for facilitating the cleaning of the filter plate is arranged on the outer wall of the carrying frame; the collection device includes a carrying frame and a filter plate. The carrying frame is slidably installed on the outer wall of the loading plate, the filter plate is rotatably installed on the inner wall of the carrying frame, a wire winding device is fixedly installed on the inner wall of the carrying frame, a metal wire is arranged on the circumferential surface of the wire winding device, and one side of the metal wire away from the wire winding device is fixedly connected with the filter plate. Start the wire winding device to tighten the metal wire, drive the filter plate to turn upward to a specified angle, and form a collection space with the carrying frame. A filter net is arranged on the inner wall of the carrying frame, the filter plate contacts the inner wall of the collection tank, and a lifting device is arranged on the top of the air flotation tank, and the output end of the lifting device is rotatably connected with the top of the carrying frame.

[0011] According to the above technical solution, a cross plate slidably penetrates through one side of the carrying frame close to the slag scraping plate. A spring piece is arranged between the cross plate and the carrying frame. A hollow plate is fixedly installed on the outer wall of the carrying frame. The cross plate contacts the inner wall of the hollow plate. An arc surface is formed on one side of the cross plate away from the spring piece. During the movement of the slag scraping plate, it contacts the arc surface of the cross plate and continuously applies a thrust force to push the cross plate to contract towards the carrying frame.

[0012] According to the above technical solution, the auxiliary device includes an outer frame and a sliding plate. The outer frame is fixedly installed on the outer wall of the carrying frame. The sliding plate is slidably installed on the inner wall of the outer frame. A blocking plate is rotatably installed on the inner wall of the sliding plate. A convex block is rotatably installed on the inner wall of the sliding plate. A limiting rod slidably penetrates through the outer wall of the sliding plate. A second torsion spring is arranged between the blocking plate and the sliding plate. One side of the blocking plate away from the limiting rod contacts the convex block. A blind hole is formed on one side of the carrying frame close to the limiting rod. The limiting rod contacts the inner wall of the blind hole. The filter plate rotates upwards and contacts one side of the blocking plate away from the limiting rod, pushing the blocking plate to rotate towards the limiting rod.

[0013] According to the above technical solution, a rectangular block is fixedly installed on the outer wall of the sliding plate. An elastic piece is arranged between the outer frame and the rectangular block. The rectangular block moves to squeeze the elastic piece.

[0014] The present invention provides a sewage treatment device for petrochemical production. It has the following beneficial effects: (1) For this sewage treatment device for petrochemical production, the moving floating slag is blocked by the reset rotating plate, preventing it from re-entering the flotation tank. Through the physical block formed by the rotating plate in the collection tank, it can effectively prevent the collected oil floating slag from escaping, ensuring a high recovery rate of petrochemical sewage floating slag. At the same time, the inclined surface of the slag scraping plate can scrape off the oily floating slag adhering to the inner wall of the collection tank passage. Through the inclined surface of the slag scraping plate, not only can the traveling resistance of the slag scraping plate in the oily sewage be significantly reduced, but also the oily floating slag adhering to the collection tank passage can be scraped off, improving the effect of floating slag collection.

[0015] (2) For this sewage treatment device for petrochemical production, the cross plate regularly impacts the hollow plate to generate vibration. By regularly colliding the cross plate with the hollow plate to generate vibration, the adhesion force of the oily particles in the petrochemical sewage can be destroyed, avoiding caking and hardening, and ensuring the filtration efficiency. At the same time, the filter plate rotates upwards to form a collection space with the carrying frame. By adjusting the angle of the filter plate, not only can it facilitate the operator to clean the carrying frame and the filter plate, but also prevent the floating slag in the collection tank from scattering during the cleaning process, ensuring the recovery rate of the floating slag.

[0016] (3) The petrochemical production sewage treatment device, where the baffle provides support for the filter plate to form a stable working angle. Through the support of the baffle, the impact force on the metal wire during high-pressure flushing can be offset, preventing the metal wire from fatigue fracture due to repeated stress, extending the service life of the metal wire. At the same time, after both side baffles are separated from the filter plate, the rope winding device is started to slowly release the metal wire. With the limitation of the limiting rod, the operator can flexibly adjust the position of the baffle, not only ensuring the standardization of the operation, but also reducing the danger caused by operation errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall semi-sectional structure of the present invention; Figure 3 is a schematic diagram of the collection tank and loading plate structure of the present invention; Figure 4 is a schematic diagram of the limiting frame position structure of the present invention; Figure 5 is a schematic diagram of the T-shaped block structure of the present invention; Figure 6 is a schematic diagram of the internal structure of the carrying frame of the present invention; Figure 7 is a schematic diagram of the metal wire structure of the present invention; Figure 8 is a schematic diagram of the elastic piece structure of the present invention; Figure 9 is a schematic diagram of the overall structure of the outer frame of the present invention; Figure 10 is a schematic diagram of the baffle and convex block structure of the present invention.

[0018] In the figure: 1, air flotation tank; 2, fixed plate; 3, collection tank; 4, loading plate; 5, roller; 6, sprocket; 7, chain; 8, slag scraping plate; 9, rotating plate; 10, T-shaped block; 11, limiting frame; 21, carrying frame; 22, filter plate; 23, rope winding device; 24, metal wire; 25, cross plate; 26, elastic piece; 27, hollow plate; 31, lifting device; 41, outer frame; 42, sliding plate; 43, baffle; 44, convex block; 45, limiting rod; 46, rectangular block; 47, elastic sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part 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 shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1 - 10 , an embodiment of the present invention is: a sewage treatment device for petrochemical production, including a flotation tank 1. A fixing plate 2 is fixedly installed on the top of the flotation tank 1, and the fixing plate 2 is used for installing an aeration device. It also includes: a collection tank 3, the collection tank 3 is arranged inside the flotation tank 1, a drain pipe is arranged on the outer wall of the collection tank 3, and the drain pipe fixedly penetrates the inner wall of the flotation tank 1; a loading plate 4, the loading plate 4 is fixedly installed on the top of the collection tank 3; a rotating roller 5, the rotating roller 5 is rotatably installed on the inner wall of the loading plate 4; a sprocket 6, the sprocket 6 is fixedly installed on the circumferential surface of the rotating roller 5; a chain 7, the chain 7 is arranged on the outer wall of the sprocket 6, and the chain 7 meshes with the sprocket 6; a slag scraping plate 8, the slag scraping plate 8 is fixedly installed on the outer wall of the chain 7, and a slope is provided on one side of the slag scraping plate 8 close to the collection tank 3. Through the slope of the slag scraping plate 8, not only can the traveling resistance of the slag scraping plate 8 in the oily sewage be significantly reduced, but also the oily floating slag adhered to the channel of the collection tank 3 can be scraped off, improving the effect of floating slag collection.

[0021] A pulley is arranged on the circumferential surface of the rotating roller 5, and the pulley is used for the rotating roller 5 to be connected with the motor through belt transmission. By setting the pulley, it is ensured that the rotating roller 5 can work efficiently.

[0022] A rotating plate 9 is rotatably installed on the inner wall of the collection tank 3, and a first torsion spring is arranged between the rotating plate 9 and the collection tank 3. Through the physical block formed by the rotating plate 9 in the collection tank 3, the escaped oil floating slag that has been collected can be effectively prevented, ensuring a high recovery rate of petrochemical sewage floating slag.

[0023] A T-shaped block 10 is fixedly installed at the bottom of the rotating plate 9, and a limiting frame 11 is fixedly installed on the inner wall of the collection tank 3. The T-shaped block 10 contacts the top of the inner wall of the limiting frame 11. By setting the limiting frame 11, the rotating plate 9 is prevented from rotating in an unexpected direction, affecting the use of its effect.

[0024] When the present embodiment is working, after the sewage enters the flotation tank 1, the aeration device on the fixed plate 2 is started, which releases microbubbles at the bottom of the sewage. The microbubbles adhere to the surface of the suspended matter, reducing its density and floating to the liquid surface with the bubbles, forming a scum layer; then the motor is started, and the roller 5 is driven to rotate by the belt drive, and the roller 5 drives the chain 7 to circulate through the sprocket 6, and the scraper 8 on the chain 7 moves synchronously; the scraper 8 contacts the scum during movement and pushes it into the channel of the collection tank 3. The scum is continuously pushed by the scraper 8 and finally enters the collection tank 3. After the pushing is completed, the scraper 8 is separated from the liquid surface along with the chain 7, and the subsequent scraper 8 repeats this process in sequence; the inclined surface of the scraper 8 can scrape off the oily scum adhered to the inner wall of the channel of the collection tank 3 during movement, avoiding blockage caused by long-term accumulation in the channel. The inclined surface of the scraper 8 can not only significantly reduce the moving resistance of the scraper 8 in the oily sewage, but also scrape off the oily scum adhered in the channel of the collection tank 3, thereby improving the scum collection efficiency. The scraper plate 8 contacts the side of the rotating plate 9 away from the T-shaped block 10 during movement. At this time, the scraper plate 8 pushes the rotating plate 9 to rotate downward, and the rotating plate 9 drives the T-shaped block 10 to rotate synchronously. The T-shaped block 10 rotates and disengages from the limiting frame 11. At the same time, the rotating plate 9 stretches the No. 1 torsion spring. The rotated rotating plate 9 forms an inclined angle after rotating downward, and lifts the sewage in the subsequent movement, so that the scum follows the water flow over the rotating plate 9 and enters the collection tank 3; when the scraper plate 8 is out of contact with the rotating plate 9, the No. 1 torsion spring drives the rotating plate 9 and the T-shaped block 10 to return to the initial position, and the T-shaped block 10 contacts the limiting frame 11 again; after the sewage passes through the rotating plate 9, it hits the inner wall of the collection tank 3, generating reverse ripples to push the scum back. The moving scum is blocked by the reset rotating plate 9 to prevent it from re-entering the flotation tank 1. The physical barrier formed by the rotating plate 9 in the collection tank 3 can effectively prevent the collected oil scum from escaping, thereby ensuring a high recovery rate of petrochemical wastewater scum.

[0025] See also Figures 1 - 10, on the basis of the above embodiments, in another embodiment of the present invention, a collecting device for collecting scum is provided on the loading plate 4, and an auxiliary device for facilitating the cleaning of the filter plate 22 is provided on the outer wall of the carrying frame 21; the collecting device includes the carrying frame 21 and the filter plate 22, the carrying frame 21 is slidably installed on the outer wall of the loading plate 4, the filter plate 22 is rotatably installed on the inner wall of the carrying frame 21, a rope winding device 23 is fixedly installed on the inner wall of the carrying frame 21, a metal wire 24 is arranged on the circumferential surface of the rope winding device 23, and one side of the metal wire 24 away from the rope winding device 23 is fixedly connected to the filter plate 22. A filter net is arranged on the inner wall of the carrying frame 21, the filter plate 22 is in contact with the inner wall of the collecting pool 3, and a lifting device 31 is arranged on the top of the air flotation pool 1. The output end of the lifting device 31 is rotatably connected to the top of the carrying frame 21. By adjusting the angle of the filter plate 22, it is not only convenient for the operator to clearly clean the carrying frame 21 and the filter plate 22, but also can prevent the scum in the collecting pool 3 from drifting during the cleaning process, ensuring the recovery rate of the scum.

[0026] A cross plate 25 slidably penetrates through one side of the carrying frame 21 close to the slag scraping plate 8. A spring piece 26 is arranged between the cross plate 25 and the carrying frame 21. A hollow plate 27 is fixedly installed on the outer wall of the carrying frame 21. The cross plate 25 is in contact with the inner wall of the hollow plate 27. An arc surface is formed on one side of the cross plate 25 away from the spring piece 26. By regularly colliding the cross plate 25 with the hollow plate 27 to generate vibration, the adhesion force of the oily particles in the petrochemical sewage can be destroyed, avoiding hardening and ensuring the filtration efficiency.

[0027] The auxiliary device includes an outer frame 41 and a sliding plate 42. The outer frame 41 is fixedly installed on the outer wall of the carrying frame 21. The sliding plate 42 is slidably installed on the inner wall of the outer frame 41. A blocking plate 43 is rotatably installed on the inner wall of the sliding plate 42. A convex block 44 is rotatably installed on the inner wall of the sliding plate 42. A limiting rod 45 slidably penetrates through the outer wall of the sliding plate 42. A second torsion spring is arranged between the blocking plate 43 and the sliding plate 42. One side of the blocking plate 43 away from the limiting rod 45 is in contact with the convex block 44. A blind hole is formed on one side of the carrying frame 21 close to the limiting rod 45. The limiting rod 45 is in contact with the inner wall of the blind hole. By the support of the blocking plate 43, the impact force on the metal wire 24 during high-pressure flushing can be offset, avoiding fatigue fracture of the metal wire 24 due to repeated stress and prolonging the service life of the metal wire 24.

[0028] A rectangular block 46 is fixedly installed on the outer wall of the sliding plate 42. An elastic piece 47 is arranged between the outer frame 41 and the rectangular block 46. Through the limitation of the limiting rod 45, the operator can flexibly adjust the position of the blocking plate 43, not only ensuring the standardization of the operation, but also reducing the danger caused by operation errors.

[0029] During the operation of this embodiment, the slag scraping plate 8 contacts the arc surface of the cross plate 25 during movement and continuously applies a thrust force to push the cross plate 25 to contract towards the carrying frame 21. At this time, the cross plate 25 disengages from the inner wall of the hollow plate 27 and simultaneously squeezes the elastic piece 26, causing it to deform and store elastic potential energy. When the slag scraping plate 8 disengages from the cross plate 25, the elastic piece 26 pushes the cross plate 25 to reset and collide with the hollow plate 27. The subsequent periodic movement of the slag scraping plate 8 repeats this process, causing the cross plate 25 to regularly impact the hollow plate 27, generating vibrations. These vibrations are transmitted to the filter plate 22 through the carrying frame 21, preventing particulate matter from accumulating and clogging on the surface of the filter plate 22. By regularly colliding the cross plate 25 with the hollow plate 27 to generate vibrations, the adhesion force of the oily particles in the petrochemical sewage can be destroyed, avoiding hardening and ensuring the filtration efficiency. When cleaning the floating slag in the collection tank 3, the sewage in the collection tank 3 is drained through the drain pipe. The floating slag that loses buoyancy support naturally settles on the surface of the filter plate 22. The wire winding device 23 is started to tighten the metal wire 24, driving the filter plate 22 to flip upwards to a specified angle, forming a collection space with the carrying frame 21 to ensure that the floating slag is completely intercepted. The lifting device 31 is started to drive the carrying frame 21 and the filter plate 22 to move upwards synchronously to a specified height for easy manual cleaning. At this time, the staff uses a flushing tool to flush the carrying frame 21 and the filter plate 22 to remove the sludge carried on the surface of the floating slag. The flushing sewage flows back to the collection tank 3 along the carrying frame 21. After flushing, the wire winding device 23 releases the metal wire 24 to reset the filter plate 22. At this time, the dehydrated floating slag can be centrally taken out for subsequent treatment. By adjusting the angle of the filter plate 22, it is not only convenient for the operator to clean the carrying frame 21 and the filter plate 22, but also prevents the floating slag in the collection tank 3 from drifting during the cleaning process, ensuring the recovery rate of the floating slag; During the cleaning operation, the filter plate 22 rotates upward and contacts the side of the blocking plate 43 away from the limit rod 45, pushing the blocking plate 43 to rotate in the direction of the limit rod 45. At this time, the blocking plate 43 and the convex block 44 are separated, and the No. 2 torsion spring is stretched to store elastic potential energy. When the filter plate 22 is out of contact with the blocking plate 43, the No. 2 torsion spring releases the elastic potential energy to drive the blocking plate 43 to reset and re-contact the convex block 44, and the rope winding device 23 is started to release the metal wire 24. The filter plate 22 rotates to the initial position under the action of gravity until it contacts the side of the blocking plate 43 close to the limit rod 45. At this time, the blocking plate 43 provides support for the filter plate 22, forming a stable working angle, ensuring the impact force during flushing, and will not wear the service life of the metal wire 24. The support of the blocking plate 43 can offset the impact force on the metal wire 24 during high-pressure flushing, thereby preventing the metal wire 24 from being repeatedly stressed. The filter plate 22 is then released from the filter housing 22 and the filter housing 22 is released from the filter housing 22. The filter housing 22 is then released from the filter housing 22 and the filter housing 22 is released from the filter housing 22. The filter housing 22 is then released from the filter housing 22 and the filter housing 22 is released from the filter housing 22.

[0030] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A petrochemical production sewage treatment device, including an air flotation tank (1), characterized in that A fixing plate (2) is fixedly installed on the top of the air flotation tank (1). The fixing plate (2) is used for installing an aeration device, and further includes: A collection tank (3) is arranged inside the air flotation tank (1). A drain pipe is arranged on the outer wall of the collection tank (3), and the drain pipe fixedly penetrates through the inner wall of the air flotation tank (1); A loading plate (4) is fixedly installed on the top of the collection tank (3); A rotating roller (5) is rotatably installed on the inner wall of the loading plate (4); A sprocket (6) is fixedly installed on the circumferential surface of the rotating roller (5); A chain (7) is arranged on the outer wall of the sprocket (6), and the chain (7) meshes with the sprocket (6); A slag scraping plate (8) is fixedly installed on the outer wall of the chain (7). An inclined surface is arranged on one side of the slag scraping plate (8) close to the collection tank (3).

2. The sewage treatment device for petrochemical production according to claim 1, wherein: A pulley is arranged on the circumferential surface of the rotating roller (5), and the pulley is used for the rotating roller (5) to be connected with a motor through a belt for belt transmission.

3. A petrochemical production sewage treatment device according to claim 2, characterized in that: A rotating plate (9) is rotatably installed on the inner wall of the collection tank (3). A first torsion spring is arranged between the rotating plate (9) and the collection tank (3).

4. An oil and chemical production sewage treatment device according to claim 3, characterized in that: A T-shaped block (10) is fixedly installed at the bottom of the rotating plate (9). A limiting frame (11) is fixedly installed on the inner wall of the collection tank (3), and the T-shaped block (10) contacts the top of the inner wall of the limiting frame (11); Among them, a collection device for collecting floating slag is arranged on the loading plate (4).

5. An oil and chemical production sewage treatment device according to claim 4, characterized in that: The collection device includes a carrying frame (21) and a filter plate (22). The carrying frame (21) is slidably installed on the outer wall of the loading plate (4). The filter plate (22) is rotatably installed on the inner wall of the carrying frame (21). A rope winding device (23) is fixedly installed on the inner wall of the carrying frame (21). A metal wire (24) is arranged on the circumferential surface of the rope winding device (23). One side of the metal wire (24) far from the rope winding device (23) is fixedly connected with the filter plate (22). A filter net is arranged on the inner wall of the carrying frame (21). The filter plate (element) (22) contacts the inner wall of the collection tank (3). A lifting device (31) is arranged on the top of the air flotation tank (1), and the output end of the lifting device (31) is rotatably connected with the top of the carrying frame (21).

6. A petrochemical production sewage treatment device according to claim 5, characterized in that: A cross plate (25) slidably penetrates through one side of the carrying frame (21) close to the slag scraping plate (8). A spring piece (26) is arranged between the cross plate (25) and the carrying frame (21). A hollow plate (27) is fixedly installed on the outer wall of the carrying frame (21). The cross plate (25) contacts the inner wall of the hollow plate (27). An arc surface is arranged on one side of the cross plate (25) far from the spring piece (26); Among them, an auxiliary device for facilitating the cleaning of the filter plate (22) is arranged on the outer wall of the carrying frame (21).

7. An oil and chemical production sewage treatment device according to claim 6, characterized in that: The auxiliary device includes an outer frame (41) and a sliding plate (42). The outer frame (41) is fixedly installed on the outer wall of the carrying frame (21). The sliding plate (42) is slidably installed on the inner wall of the outer frame (41). A blocking plate (43) is rotatably installed on the inner wall of the sliding plate (42). A convex block (44) is rotatably installed on the inner wall of the sliding plate (42). A limiting rod (45) slidably penetrates through the outer wall of the sliding plate (42). A second torsion spring is arranged between the blocking plate (43) and the sliding plate (42). One side of the blocking plate (43) away from the limiting rod (45) contacts the convex block (44). A blind hole is formed on one side of the carrying frame (21) close to the limiting rod (45), and the limiting rod (45) contacts the inner wall of the blind hole.

8. An oil and chemical production sewage treatment device according to claim 7, characterized in that: A rectangular block (46) is fixedly installed on the outer wall of the sliding plate (42). An elastic sheet (47) is arranged between the outer frame (41) and the rectangular block (46).

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