Laboratory sewage discharge treatment device

Abstract

The device comprises a discharge table 1, a sewage purifier 2, and a collection and treatment bottle 3; a sewage tank is arranged on the discharge table 1, a sewage pipe 32 is between the discharge ta

Description

TECHNICAL FIELD The present invention relates to the technical field of sewage discharge, and in particular, to a treatment device for laboratory sewage discharge. BACKGROUND The sewage in chemical laboratories has complex components, often containing harmful substances such as heavy metal ions, acid-base materials, and organic solvents. Effective treatment is required before discharge to avoid polluting water sources and the environment. However, before purifying laboratory sewage, experimental solutions in various test tubes and reagent bottles must first be poured into specialized collection and treatment bottles for centralized handling. During the discharge process, such treatment bottles typically require unscrewing the cap, pouring the sewage into a discharge table, and then purifying it through a sewage purifier for safe discharge. Laboratory sewage often generates volatile toxic gases or other harmful gases that easily escape in large quantities when opening the cap or pouring the solution. Although staff wear protective equipment such as masks, the volatilized gases still affect human health within the laboratory. Additionally, subsequent cleaning of the collection and treatment bottles can release residual harmful gases from the sewage, posing health risks to experimenters. Based on this, the present invention provides a treatment device for laboratory sewage discharge, which can eliminate the drawbacks of existing devices. SUMMARY OF THE INVENTION The objective of the present invention is to provide a treatment device for laboratory sewage discharge, aiming to solve the problem in the background art where modem collection and treatment bottles easily release large amounts of harmful gases when opening the cap or pouring the solution. To achieve the above objective, the present invention provides the following technical solution: A treatment device for laboratory sewage discharge comprises a discharge table, a sewage purifier, and a collection and treatment bottle. A sewage tank is arranged on the upper surface of the discharge table, a sewage pipe is arranged between the discharge table and the sewage purifier, and the collection and treatment bottle is placed inside the sewage tank. The collection and treatment bottle comprises a collection tank and a support frame, with the support frame arranged on the peripheral side of the collection tank. An opening / closing assembly is provided at a top opening of the collection tank for quickly pouring sewage into the collection and treatment bottle, thereby reducing the volatilization of harmful gases into the air. A drainage assembly is provided at a bottom opening of the collection tank and the bottom of the sewage tank for quickly discharging sewage from the collection and treatment bottle, thereby reducing the volatilization of harmful gases into the air. A cleaning assembly is arranged inside the collection tank for quickly cleaning the collection and treatment bottle, thereby reducing the volatilization of harmful gases into the air. Based on the above technical solution, the present invention further provides the following optional technical solutions: In an optional solution: The opening / closing assembly includes a fixed box and a first baffle. The fixed box is fixedly connected to the upper surface of the collection tank. Both the top and bottom walls of the fixed box are provided with holes of the same size as the opening in the top wall of the collection tank. The opposite side walls of the fixed box are respectively slidably connected through a first baffle and a second baffle, which are slidably connected to each other. Both the first baffle and the second baffle are provided with semi-water holes, and springs are fixedly connected between both the second baffle and the first baffle and the inner side walls of the fixed box. In an optional solution: The drainage assembly includes a plug cylinder and a spherical plug. A rotating inner liner is rotatably arranged on the inner side wall of the collection tank. The plug cylinder is fixedly connected to the inner bottom wall of the rotating inner liner via a bracket. The spherical plug is slidably connected to the inner side wall of the plug cylinder, with a spring fixedly connected between the spherical plug and the inner top wall of the plug cylinder. A square cylinder is fixedly connected to the upper surface of the spherical plug, and a telescopic cylinder is slidably connected to the inner side wall of the square cylinder, with the upper surface of the telescopic cylinder fixedly connected to the plug cylinder. The bottom wall of the rotating inner liner is provided with a hole having the same shape as the bottom opening of the collection tank, the spherical plug abuts against the bottom hole of the rotating inner liner, and the top wall of the rotating inner liner is provided with a hole. The inner bottom wall of the sewage tank is connected to a rotating cylinder via a bearing, and the rotating cylinder is connected to a fixed cylinder via a bearing. A water delivery steel pipe is fixedly connected to the inner wall of the fixed cylinder via a bracket, with a push block fixedly connected to the periphery of the water delivery steel pipe. The push block penetrates the spherical plug, plug cylinder, square cylinder, and telescopic cylinder, and abuts against the lower surface of the spherical plug. The fixed cylinder is connected to the sewage pipe. In an optional solution: The cleaning assembly includes a first fixed pipe and a water delivery steel pipe. A circular truncated cone box is connected to the upper surface of the plug cylinder via a bearing, and the first fixed pipe is connected to the plug cylinder via a bearing. The water delivery steel pipe is connected to a water inlet pipe, which penetrates the fixed cylinder. The first fixed pipe is connected to two spray heads, and the top end of the water delivery steel pipe is in butt joint with the first fixed pipe. In an alternative embodiment: A motor is fixedly attached to the lower surface of the sewage tank via a bracket, while a rotating shaft is connected to the same surface through a bearing. This rotating shaft links to the motor's output end and is fitted with a first gear. A second gear, which meshes with the first gear, is fixed to the circumference of the rotating cylinder. At the top of the rotating cylinder, a first electromagnet is installed. The bottom of the rotating inner liner is crafted from a magnetic material. The top end of the water delivery steel pipe features a second electromagnet, and the first fixed pipe, also made of magnetic material, has two symmetrical rotating pipes connected to its circumference via bearings. These rotating pipes extend beyond the truncated cone box and connect to the spray heads. The rotating pipe is fixedly connected with a first spiral bevel gear, a push block is fixedly connected to the upper surface of the plug cylinder, and both first spiral bevel gears are meshed with a second spiral bevel gear. In an optional solution: Extrusion rods are fixedly connected to the side walls of both the second baffle and the first baffle. In an optional solution: A scraping plate is fixedly connected to the inner top wall of the collection tank, and the scraping plate is in sliding connection with the inner wall of the rotating inner liner. In an optional solution: The support frame is in sliding connection with the inner side wall of the sewage tank. Compared with the prior art, the present invention has the following beneficial effects: 1. The opening / closing assembly enables a faster and more convenient process for pouring wastewater from reagent bottles into the collection tank. By simply pressing and releasing the extrusion rods with one hand, the opening / closing of the collection tank's inlet can be completed, which takes significantly less time than conventional bottle cap unscrewing and tightening. This effectively reduces the amount of harmful gases volatilizing into the air during the pouring process, minimizing harm to experimenters. 2. Unlike conventional collection and treatment bottles that require opening and pouring, leading to significant harmful gas leakage, the drainage assembly allows the collection tank to discharge wastewater into pipelines quickly within a closed environment simply by placing it in the sewage tank. This effectively prevents harmful gas leakage and reduces risks to experimenters. 3. The cleaning assembly enables internal cleaning of the collection tank in a closed state, and it can automatically initiate cleaning immediately after wastewater discharge. This significantly reduces harmful gas leakage, shortens subsequent cleaning time, and minimizes harm caused by residual wastewater volatilization to experimenters. 4. In the present invention, by activating the first electromagnet, the second electromagnet, and the motor: The first electromagnet adsorbs the bottom wall of the rotating inner liner, and the second electromagnet adsorbs the first fixed pipe. The motor drives the first gear to rotate, and the first gear drives the rotating cylinder to rotate through meshing with the second gear. The rotating cylinder drives the first electromagnet to rotate, which in turn drives the rotating inner liner to rotate via magnetic force. The rotating inner liner drives the plug cylinder to rotate, and the plug cylinder drives the second spiral bevel gear to rotate. Meanwhile, the water delivery steel pipe remains stationary, and the second electromagnet's magnetic force keeps the first fixed pipe from rotating. The rotation of the second spiral bevel gear meshes with the first spiral bevel gears to drive the rotating pipes to rotate, which in turn drives the spray heads to rotate. This causes water to spray out rotatably from the spray heads. As the rotating inner liner revolves around the spray heads, water is sprayed omni-directionally inside the rotating inner liner, significantly improving the cleaning effect on the sewage residue within the rotating inner liner. DESCRIPTION OF DRAWINGS FIG. 1 is the schematic structural diagram of the present invention. FIG. 2 is the schematic diagram of the discharge table structure. FIG. 3 is the schematic diagram of the collection and treatment bottle structure. FIG. 4 is the schematic diagram of the water delivery steel pipe structure. FIG. 5 is the schematic partial sectional oblique view of the present invention. FIG. 6 is the schematic partial sectional front view of the present invention. FIG. 7 is the enlarged view of area A in FIG. 6. FIG. 8 is the schematic diagram of the internal structure of the collection tank. FIG. 9 is the enlarged view of area B in FIG. 8. Annotation of Reference Numerals: 1. Discharge table; 2. Sewage purifier; 3. Collection and treatment bottle; 4. Opening / closing assembly; 5. Drainage assembly; 6. Cleaning assembly; 7. Collection tank; 8. Support frame; 9. Fixed box; 10. First baffle; 11. Second baffle; 12. Extrusion rod; 13. Semi-water hole; 14. Rotating inner liner; 15. Spherical plug; 16. Plug cylinder; 17. Square cylinder; 18. Telescopic cylinder; 19. Circular truncated cone box; 20. Spray head; 21. First fixed pipe; 22. First spiral bevel gear; 23. Second spiral bevel gear; 24. Motor; 25. First gear; 26. Second gear; 27. Rotating cylinder; 28. First electromagnet; 29. Fixed cylinder; 30. Water delivery steel pipe; 31. Water inlet pipe; 32. Sewage pipe; 33. Push block; 34. Rotating shaft; 35. Second electromagnet; 36. Scraping plate; 37. Rotating pipe. DETAILED DESCRIPTION OF THE INVENTION To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. In one embodiment, as shown in FIGS. 1 to 9, a treatment device for laboratory sewage discharge includes a discharge table 1, a sewage purifier 2, and a collection and treatment bottle 3. A sewage tank is arranged on the upper surface of the discharge table 1, a sewage pipe 32 is arranged between the discharge table 1 and the sewage purifier 2, the collection and treatment bottle 3 is placed inside the sewage tank, and the collection and treatment bottle 3 includes a collection tank 7 and a support frame 8. The support frame 8 is arranged on the peripheral side of the collection tank 7. An opening / closing assembly 4 is provided at the top opening of the collection tank 7, which is used to quickly pour sewage into the collection and treatment bottle 3 and reduce the volatilization of harmful gases into the air; A drainage assembly 5 is provided at the bottom opening of the collection tank 7 and the bottom of the sewage tank, which is used to quickly discharge the sewage in the collection and treatment bottle 3 and reduce the volatilization of harmful gases into the air; A cleaning assembly 6 is arranged inside the collection tank 7, which is used to quickly clean the collection and treatment bottle 3 and reduce the volatilization of harmful gases into the air. In one embodiment, the opening / closing assembly 4 includes a fixed box 9 and a first baffle 10. The fixed box 9 is fixedly connected to the upper surface of the collection tank 7. Both the top and bottom walls of the fixed box 9 are provided with holes of the same size as the opening in the top wall of the collection tank 7. The opposite side walls of the fixed box 9 are respectively connected with a first baffle 10 and a second baffle 11 in a penetrating and sliding manner. The first baffle 10 and the second baffle 11 are slidably connected, and both the first baffle 10 and the second baffle 11 are provided with semi-water holes 13. Springs are fixedly connected between both the second baffle 11 and the first baffle 10 and the inner side walls of the fixed box 9. The pouring process is fast and convenient: simply pressing and releasing the extrusion rod 12 with one hand can open / close the pouring hole of the collection tank 7. Compared with conventional bottle caps that require screwing on / off, this method takes less time, effectively reducing the volatilization of harmful gases into the air during wastewater pouring from test tubes into the collection tank 7, and minimizing harm to experimenters. In one embodiment, the drainage assembly 5 includes a plug cylinder 16 and a spherical plug 15. A rotating inner liner 14 is rotatably arranged on the inner sidewall of the collection tank 7. The inner bottom wall of the rotating inner liner 14 is fixedly connected to the plug cylinder 16 via a bracket. The spherical plug 15 is slidably connected to the inner sidewall of the plug cylinder 16, with a spring fixedly connected between the spherical plug 15 and the inner top wall of the plug cylinder 16. A square cylinder 17 is fixedly connected to the upper surface of the spherical plug 15, and a telescopic cylinder 18 is slidably connected to the inner sidewall of the square cylinder 17. The upper surface of the telescopic cylinder 18 is fixedly connected to the plug cylinder 16. The bottom wall of the rotating inner liner 14 is provided with a hole matching the shape of the bottom opening of the collection tank 7, where the spherical plug 15 abuts against the bottom hole of the rotating inner liner 14. The top wall of the rotating inner liner 14 is also provided with a hole. In one embodiment, the bottom wall of the sewage tank is connected to a rotating cylinder 27 via a bearing, and the rotating cylinder 27 is connected to a fixed cylinder 29 via a bearing. The inner wall of the fixed cylinder 29 is fixedly connected to a water delivery steel pipe 30 via a bracket. A push block 33 is fixedly connected to the circumferential side of the water delivery steel pipe 30. The push block 33 penetrates through the spherical plug 15, plug cylinder 16, square cylinder 17, and telescopic cylinder 18, and abuts against the lower surface of the spherical plug 15. The fixed cylinder 29 is connected to the sewage pipe 32. When the wastewater collection is complete, the collection and treatment bottle 3 is inserted into the sewage tank. Guided by the cooperation between the inner wall of the sewage tank and the support frame 8, the water delivery steel pipe 30 is inserted into the spherical plug 15. When the collection and treatment bottle 3 is fully inserted into the sewage tank, the push block 33 lifts the spherical plug 15, allowing the wastewater in the collection tank 7 to quickly drain from the bottom opening into the rotating cylinder 27 and fixed cylinder 29, and then flow into the discharge table 1 through the sewage pipe 32 for purification treatment. Unlike conventional collection and treatment bottles 3 that require opening and pouring (causing significant harmful gas leakage), simply placing the collection tank 7 into the sewage tank enables rapid discharge of wastewater into pipelines within a closed environment. This effectively prevents harmful gas leakage and reduces potential hazards to experimenters. In one embodiment, the cleaning assembly 6 includes a first fixed pipe 21 and a water delivery steel pipe 30. The upper surface of the plug cylinder 16 is connected to a circular truncated cone box 19 via a bearing, and the plug cylinder 16 is connected to the first fixed pipe 21 via a bearing. The water delivery steel pipe 30 is connected to a water inlet pipe 31, which penetrates the fixed cylinder 29. The first fixed pipe 21 is connected to two spray heads 20, and the top end of the water delivery steel pipe 30 is butted against the first fixed pipe 21. Clean water enters the water delivery steel pipe 30 through the water inlet pipe 31, then flows into the first fixed pipe 21, and is sprayed out from the spray heads 20 to clean the inner wall of the rotating inner liner 14 in the collection tank 7. The cleaned wastewater flows out from the bottom. During the internal cleaning of the collection tank 7, the system remains in a closed state, and the automatic internal cleaning can be directly carried out after the sewage discharge is completed. This effectively reduces the leakage of harmful gases, shortens the subsequent cleaning time, and minimizes the harm caused by volatile harmful gases to experimenters. In one embodiment, a motor 24 is fixedly connected to the lower surface of the sewage tank via a bracket, and a rotating shaft 34 is connected to the lower surface of the sewage tank via a bearing. The rotating shaft 34 is connected to the output end of the motor 24, and a first gear 25 is fixedly connected to the rotating shaft 34. A second gear 26 is fixedly connected to the circumferential side of the rotating cylinder 27 and meshes with the first gear 25. A first electromagnet 28 is fixedly arranged at the top end of the rotating cylinder 27. The bottom of the rotating inner liner 14 is made of a magnetic material. A second electromagnet 35 is arranged at the top end of the water delivery steel pipe 30, and the first fixed pipe 21 is made of a magnetic material. Two symmetrical rotating pipes 37 are connected to the circumferential side of the first fixed pipe 21 via bearings. The rotating pipes 37 penetrate outside the circular truncated cone box 19 and are connected to the spray heads 20. A first spiral bevel gear 22 is fixedly connected to each rotating pipe 37. A push block 33 is fixedly connected to the upper surface of the plug cylinder 16, and both first spiral bevel gears 22 mesh with the second spiral bevel gear 23. During the cleaning process, activate the first electromagnet 28, second electromagnet 35, and motor 24. The first electromagnet 28 magnetically adsorbs the bottom wall of the rotating inner liner 14, while the second electromagnet 35 adsorbs the first fixed pipe 21. The motor 24 drives the first gear 25 to rotate, which drives the rotating cylinder 27 to rotate through the engagement with the second gear 26. The rotation of the rotating cylinder 27 drives the first electromagnet 28 to rotate, and the first electromagnet 28 drives the rotating inner liner 14 to rotate via magnetic force. The rotating inner liner 14 drives the plug cylinder 16 to rotate, and the plug cylinder 16 drives the second spiral bevel gear 23 to rotate. Meanwhile, the water delivery steel pipe 30 remains stationary. The water delivery steel pipe 30 keeps the first fixed pipe 21 from rotating via the magnetic force of the second electromagnet 35. The rotation of the second spiral bevel gear 23 drives the rotating pipe 37 to rotate through the engagement with the first spiral bevel gear 22. The rotating pipe 37 drives the spray head 20 to rotate, causing water to spray out rotatably from the spray head 20. When the rotating inner liner 14 rotates around the spray head 20, water can be sprayed omni-directionally inside the rotating inner liner 14, improving the cleaning effect of the wastewater inside the rotating inner liner 14. In one embodiment, the side walls of both the second baffle 11 and the first baffle 10 are fixedly connected with an extrusion rod 12, facilitating single-handed operation. In one embodiment, a scraping plate 36 is fixedly connected to the inner top wall of the collection tank 7, and the scraping plate 36 is in sliding contact with the inner wall of the rotating inner liner 14. When the rotating inner liner 14 rotates, the fixed collection tank 7 cooperates with the scraping plate 36 to scrape off flocculent dirt adhering to the inner wall of the rotating inner liner 14, further improving the cleaning effect on the collection tank 7. In one embodiment, the support frame 8 is slidably connected to the inner side wall of the sewage tank, guiding the collection and treatment bottle 3. The above embodiments disclose a treatment device for laboratory wastewater discharge, with its specific working principle and process as follows: SI: First, collect experimental wastewater from various reagent bottles and test tubes in the laboratory and pour it into the collection and treatment bottle 3. During the pouring process, simply press the two extrusion rods 12 with two fingers. The extrusion rods 12 respectively drive the second baffle 11 and the first baffle 10 to move toward each other. At this point, the semi-water holes 13 of the second baffle 11 and the first baffle 10 combine to form a complete hole, allowing the wastewater in the test tube to be poured into the collection tank 7. After releasing the hand, the first baffle 10 and the second baffle 11 are reset by the spring. The non-porous positions of the first baffle 10 and the second baffle 11 respectively shield the two semi-water holes 13 to complete the closing operation. The pouring process is fast and convenient: the opening / closing of the pouring hole of the collection tank 7 can be completed by simply pressing and releasing the extrusion rod 12 with one hand. Compared with the conventional method of screwing on / off the bottle cap, this method takes less time, effectively reducing the volatilization of harmful gases into the air during the pouring of wastewater from the test tube into the collection tank 7, and minimizing harm to experimenters. S2: Once the wastewater collection is complete, insert the collection and treatment bottle 3 into the sewage tank. Guided by the cooperation between the inner wall of the sewage tank and the support frame 8, the water delivery steel pipe 30 is inserted into the spherical plug 15. When the collection and treatment bottle 3 is fully inserted into the sewage tank, the push block 33 lifts the spherical plug 15, allowing the wastewater in the collection tank 7 to rapidly drain from the bottom opening into the rotating cylinder 27 and fixed cylinder 29. The wastewater then flows into the discharge table 1 through the sewage pipe 32 for purification treatment. Unlike conventional collection and treatment bottles 3, which require opening and pouring—thereby causing significant leakage of harmful gases—the system allows for rapid discharge of wastewater from collection tank 7 into pipelines within a closed environment simply by placing the tank into the sewage tank. This effectively prevents the leakage of harmful gases and reduces the harm caused to experimenters. S3: After the wastewater is discharged, the water valve is opened. Clean water enters the water delivery steel pipe 30 from the water inlet pipe 31, then flows from the water delivery steel pipe 30 into the first fixed pipe 21, and is sprayed out from the spray head 20 to clean the inner wall of the rotating inner tank 14 in the collection tank 7. The cleaned wastewater flows out from the bottom. When the interior of the collection tank 7 is cleaned, it remains in a closed state, and the internal cleaning can be automatically carried out directly after the wastewater discharge is completed. This effectively reduces the leakage of harmful gases, shortens the subsequent cleaning time, and minimizes the harm caused by volatile harmful gases to experimenters. During the cleaning process, the first electromagnet 28, second electromagnet 35, and motor 24 are activated. The first electromagnet 28 magnetically adsorbs the bottom wall of the rotating inner liner 14, while the second electromagnet 35 adsorbs the first fixed pipe 21. The motor 24 drives the first gear 25 to rotate, which engages with the second gear 26 to drive the rotating cylinder 27. As the rotating cylinder 27 spins, it drives the first electromagnet 28, which uses magnetic force to rotate the inner liner 14. The inner liner 14 then drives the plug cylinder 16 and the second spiral bevel gear 23. Meanwhile, the water delivery steel pipe 30 remains stationary. Through the magnetic force of the second electromagnet 35, the first fixed pipe 21 is held in place. The rotating second spiral bevel gear 23 meshes with the first spiral bevel gear 22 to drive the rotating pipe 37 and spray head 20. This causes water to spray out in a rotating motion from the spray head 20. As the inner liner 14 rotates around the spray head 20, water is sprayed omni-directionally inside the inner liner 14, significantly improving the cleaning efficiency for wastewater residues within. While the rotating inner liner 14 is in motion, the fixed collection tank 7 works in conjunction to scrape off flocculent dirt adhering to the inner wall of the rotating inner liner 14, further improving the cleaning effect on the collection tank 7. The above are only specific implementation manners of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art who can easily conceive of changes or substitutions within the technical scope disclosed in this application shall be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

LO CXI1. A treatment device for laboratory sewage discharge, characterized in that it comprises a discharge table (1), a sewage purifier (2), and a collection and treatment bottle (3); a sewage tank is arranged on the upper surface of the discharge table (1), a sewage pipe (32) is arranged between the discharge table (1) and the sewage purifier (2), the collection and treatment bottle (3) is placed inside the sewage tank, and the collection and treatment bottle (3) comprises a collection tank (7) and a support frame (8), with the support frame (8) arranged on the peripheral side of the collection tank (7);an opening / closing assembly (4) is provided at a top opening of the collection tank (7) for quickly pouring sewage into the collection and treatment bottle (3), thereby reducing the volatilization of harmful gases into the air;a drainage assembly (5) is provided at a bottom opening of the collection tank (7) and the bottom of the sewage tank for quickly discharging sewage from the collection and treatment bottle (3), thereby reducing the volatilization of harmful gases into the air;a cleaning assembly (6) is provided inside the collection tank (7) for quickly cleaning the collection and treatment bottle (3), thereby reducing the volatilization of harmful gases into the air.

2. The treatment device for laboratory sewage discharge according to claim 1, wherein the opening / closing assembly (4) comprises a fixed box (9) and a first baffle (10); wherein the fixed box (9) is fixedly connected to the upper surface of the collection tank (7); wherein both the top and bottom walls of the fixed box (9) are provided with holes of the same size as the opening in the top wall of the collection tank (7); the opposite side walls of the fixed box (9) are respectively slidably connected through a first baffle (10) and a second baffle (11), which are slidably connected to each other; wherein both the first baffle (10) and the second baffle (11) are provided with semi-water holes (13); and wherein springs are fixedly connected between both the second baffle (11) and the first baffle (10) and the inner side walls of the fixed box (9).

3. The treatment device for laboratory sewage discharge according to claim 1, wherein the drainage assembly (5) comprises a plug cylinder (16) and a spherical plug (15); a rotating inner liner (14) is rotatably arranged on the inner side wall of the collection tank (7); the plug cylinder (16) is fixedly connected to the inner bottom wall of the rotating inner liner (14) via a bracket; the spherical plug (15) is slidably connected to the inner side wall of the plug cylinder (16), with a spring fixedly connected between the spherical plug (15) and the inner top wall of the plug cylinder (16); a square cylinder (17) is fixedly connected to the upper surface of the spherical plug (15), and a telescopic cylinder (18) is slidably connected to the inner side wall of the square cylinder (17), with the upper surface of the telescopic cylinder (18) fixedly connected to the plug cylinder (16); the bottom wall of the rotating inner liner (14) is provided with a hole having the same shape as the bottom opening of the collection tank (7), the spherical plug (15) abuts against the bottom hole of the rotating inner liner (14), and the top wall of the rotating inner liner (14) is provided with a hole;wherein the inner bottom wall of the sewage tank is connected to a rotating cylinderLO CXI(27) via a bearing, and the rotating cylinder (27) is connected to a fixed cylinder (29) via a bearing; a water delivery steel pipe (30) is fixedly connected to the inner wall of the fixed cylinder (29) via a bracket, with a push block (33) fixedly connected to the periphery of the water delivery steel pipe (30); the push block (33) penetrates the spherical plug (15), plug cylinder (16), square cylinder (17), and telescopic cylinder (18), and abuts against the lower surface of the spherical plug (15); wherein the fixed cylinder (29) is connected to the sewage pipe (32).

4. The treatment device for laboratory sewage discharge according to claim 3, wherein the cleaning assembly (6) comprises a first fixed pipe (21) and a water delivery steel pipe (30); a circular truncated cone box (19) is connected to the upper surface of the plug cylinder (16) via a bearing, and the first fixed pipe (21) is connected to the plug cylinder (16) via a bearing; the water delivery steel pipe (30) is connected to a water inlet pipe (31), which penetrates the fixed cylinder (29); the first fixed pipe (21) is connected to two spray heads (20), and the top end of the water delivery steel pipe (30) is in butt joint with the first fixed pipe (21).

5. The treatment device for laboratory sewage discharge according to claim 4, wherein a motor (24) is fixedly connected to the lower surface of the sewage tank via a bracket, and a rotating shaft (34) is connected to the lower surface of the sewage tank via a bearing; the rotating shaft (34) is connected to the output end of the motor (24) and is fixedly connected with a first gear (25); a second gear (26) is fixedly connected to the periphery of the rotating cylinder (27) and meshes with the first gear (25); a first electromagnet (28) is fixedly arranged at the top end of the rotating cylinder (27), and the bottom of the rotating inner liner (14) is made of magnetic material; a second electromagnet (35) is arranged at the top end of the water delivery steel pipe (30), and the first fixed pipe (21) is made of magnetic material; two symmetrical rotating pipes (37) are connected to the periphery of the first fixed pipe (21) via bearings; the rotating pipes (37) penetrate to the outside of the circular truncated cone box (19) and are connected with the spray heads (20); the rotating pipes (37) are fixedly connected with first spiral bevel gears (22), a push block (33) is fixedly connected to the upper surface of the plug cylinder (16), and both first spiral bevel gears (22) mesh with a second spiral bevel gear (23).

6. The treatment device for laboratory sewage discharge according to claim 2, wherein extrusion rods (12) are fixedly connected to the side walls of both the second baffle (11) and the first baffle (10).

7. The treatment device for laboratory sewage discharge according to claim 5, wherein a scraping plate (36) is fixedly connected to the inner top wall of the collection tank (7), and the scraping plate (36) is in sliding connection with the inner wall of the rotating inner liner (14).

8. The treatment device for laboratory sewage discharge according to claim 1, wherein the support frame (8) is in sliding connection with the inner side wall of the sewage tank.

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