Circulating purification device for harmful waste liquid of methyl methylpropanecarboxylate

Abstract

The invention discloses a methyl methylpropanecarboxylate harmful waste liquid circulation purification device, and belongs to the technical field of liquid purification equipment, the methyl methylpropanecarboxylate harmful waste liquid circulation purification device comprises a purification pool and a separation tank, the side face of the purification pool is provided with a conveying pipe, and the tail end of the conveying pipe is arranged in the separation tank; the surface of the purification tank is fixedly connected with a fixed plate; a pipe sleeve is rotatably arranged in the purification tank, a rotating shaft is movably connected to the interior of the purification tank through a reciprocating mechanism, and the left side of the rotating shaft is movably arranged in the pipe sleeve. According to the circulating purification device for the harmful waste liquid of methyl methylpropanecarboxylate, in the using process, the waste liquid is added into the purification pool through the liquid adding pipe, chemicals are added into the purification pool through the equipment plate, the waste liquid enters the separation tank after preliminary purification, and after liquid standing and liquid separation are carried out in the separation tank, the chemicals are recycled. The organic phase is conveyed into the purification tank through the conveying pipe and purified again, the process is repeated, and finally circulating purification is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid purification equipment, and specifically relates to a circulating purification device for harmful waste liquid of methyl methacrylate carboxylic acid. Background Art

[0002] In the process of chemical production and material processing, harmful waste liquid of methyl methacrylate carboxylic acid will be generated. After the harmful waste liquid of methyl methacrylate carboxylic acid enters the water body, it will inhibit the respiration of aquatic organisms, affect the survival of algae, fish, etc., and damage the water ecological balance. Therefore, it is very necessary to purify the harmful waste liquid of methyl methacrylate carboxylic acid. During the purification process of the harmful waste liquid of methyl methacrylate carboxylic acid, it is necessary to initially adjust the pH value of the waste liquid, and separate the high-viscosity organic phase (containing unneutralized acid and ester) by standing. Then, the separated organic phase is returned to the neutralization tank, mixed with the new waste liquid, and medicament is added again to gradually increase the neutralization degree (the neutralization rate increases by 20%-30% each time in the cycle). In this process, a circulating purification device needs to be used.

[0003] When the circulating purification device is working, the mixing depth of the medicament and the waste liquid is extremely important. If the mixing depth of the medicament and the waste liquid is insufficient, it will affect the subsequent operations. To overcome this defect, Prior Art 1 (a Chinese patent application with the application number 202222494200.X and the application date of September 21, 2022), an environmental protection chemical waste liquid purification device, when it is working, by setting an oscillation structure, it can make the waste liquid in the neutralization cylinder oscillate, accelerate the contact and mixing of the waste liquid and the neutralization medicament, and the mixing is relatively sufficient, improving the treatment effect of the environmental protection chemical waste liquid purification device on chemical waste liquid. Prior Art 2 (a Chinese patent application with the application number 202022624536.4 and the application date of November 13, 2020), a chemical and chemical waste liquid purification and treatment device, when it is working, by designing an adjustment tank with baffles, it can mix waste water from different times or different concentrations, make the outflow water quality relatively uniform, and is convenient and safe to install, and is very thorough in purifying chemical waste liquid. It is a new type of chemical and chemical waste liquid purification and treatment device.

[0004] However, in the mixing process, the single mixing structure still has insufficient mixing depth, and the waste liquid purification devices in the above applications do not have multiple mixing effects when working, and the working efficiency is still low, bringing unnecessary trouble to the purification of waste liquid. Summary of the Invention

[0005] The purpose of the present invention is to provide a circulating purification device for harmful waste liquid of methyl methacrylate carboxylic acid to solve the problem proposed in the above background art that when working, it does not have multiple mixing effects, the working efficiency is still low, and it brings unnecessary trouble to the purification of waste liquid.

[0006] To achieve the above object, the present invention provides the following technical solution: A methyl methacrylate harmful waste liquid circulation purification device, including a purification tank and a separation tank. A delivery pipe is provided on the side of the purification tank, and the end of the delivery pipe is arranged inside the separation tank. The separation tank is connected to the purification tank through an external connection pipe, and a feeding pipe is provided on the left side of the purification tank; A connecting shaft is arranged inside the purification tank; A long pin is rotatably arranged inside the purification tank, and mixing blades are fixedly connected to the surfaces of the long pin and the connecting shaft. A nozzle is fixedly connected to the surface of the long pin; A fixing plate is fixedly connected to the surface of the purification tank, and an airbag is adhered to the surface of the fixing plate; A pipe sleeve is rotatably arranged inside the purification tank, and a rotating shaft is movably connected to the inside of the purification tank through a reciprocating mechanism. The left side of the rotating shaft is movably arranged inside the pipe sleeve, and stirring blades are fixedly connected to the surface of the rotating shaft; The upper surface of the purification tank is movably connected to an equipment plate through a swinging mechanism.

[0007] Preferably, a convex structure in an inverted "L" shape is provided on the left side of the purification tank, and a motor is bolted at the position of the inverted "L" convex. The output end of the motor is fixedly connected to the connecting shaft, and the connecting shaft and the long pin are connected through a pulley.

[0008] Preferably, a pushing block is fixedly connected to the surface of the connecting shaft. A guiding plate is fixedly connected to the outer wall of the purification tank, and the top view of the guiding plate is in an inverted "U" shape. A stress plate is sleeved and connected to the surface of the guiding plate.

[0009] Preferably, a connecting spring is fixedly connected to the surface of the stress plate, and the other side of the connecting spring is fixedly connected to the inner wall of the guiding plate. The guiding plates are symmetrically distributed on both sides of the purification tank, and an external connecting rod is fixedly connected to the outer wall of the stress plate.

[0010] Preferably, tooth blocks are fixedly connected to the lower surface of the external connecting rod at equal intervals. The reciprocating mechanism includes an external magnet fixedly connected to the outer wall of the purification tank. A circular plate is fixedly connected to the end of the rotating shaft, and an internal magnet is fixedly connected to the inner wall of the circular plate. A gear meshing with the tooth blocks is fixedly connected to the surface of the pipe sleeve.

[0011] Preferably, the internal magnets are evenly distributed on the inner wall of the circular plate, and the magnetic poles on the surface of the internal magnets are opposite to the magnetic poles on the surface of the external magnet. The part of the rotating shaft located inside the pipe sleeve is convex, and the inside of the pipe sleeve is concave. A return spring is fixedly connected to the surface of the rotating shaft, and the other side of the return spring is fixedly connected to the inner wall of the pipe sleeve.

[0012] Preferably, an extrusion plate is fixedly connected to the surface of the force-bearing plate on the left side, and the surface of the extrusion plate is in contact with the surface of the airbag. A feed pipe is fixedly connected to the side of the airbag, and a discharge pipe is fixedly connected to the lower surface of the airbag. The feed pipe is connected to the output end of an external feeding device, and the nozzles are evenly distributed on the surface of the long pin.

[0013] Preferably, the outer wall of the purification tank is convex, and a connecting pipe is fixedly connected to the inside of the convex position of the purification tank. The end of the connecting pipe is located inside the long pin, and the connecting pipe is connected to the discharge pipe through an external hose. Check valves are fixedly connected to the surfaces of both the discharge pipe and the feed pipe.

[0014] Preferably, the swing mechanism includes an upper connecting plate fixedly connected to the upper surface of the purification tank. A device plate is rotatably arranged inside the upper connecting plate. The device plate is connected to the output end of an external feeding device through an external hose, and a vertical rod is attached to the lower surface of the device plate.

[0015] Preferably, the vertical rod is slidably arranged at the convex position of the purification tank. An auxiliary block is fixedly connected to the upper surface of the external connecting rod, and the auxiliary blocks are evenly distributed on the upper surface of the external connecting rod. Both the left and right sides of the auxiliary block are inclined.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: With a novel structural design, through the provided purification tank and separation tank, the cyclic multi-stage purification of waste liquid is achieved. At the same time, during the purification process, mixing blades and stirring blades are provided, which play a role in multiple stirring, enabling the medicament and the waste liquid to be deeply mixed, so that the waste liquid can be better purified. An airbag is also provided, enabling the nozzles to inject ammonia gas into the purification tank. Ammonia is easily soluble in water, and the stirring effect can be achieved simultaneously during the bubbling ventilation process, optimizing the stirring depth and improving the working efficiency. The specific content is as follows: During the use of this methyl methacrylate harmful waste liquid cyclic purification device, the waste liquid is added into the purification tank through a liquid adding pipe, and the medicament is added into the purification tank through the device plate. After preliminary purification, the waste liquid enters the separation tank. After the liquid and liquid are separated by standing in the separation tank, the organic phase is transported into the purification tank through a conveying pipe for re-purification. By repeating the above process, cyclic purification is finally achieved.

[0017] The methyl methacrylate harmful waste liquid circulation purification device, during the purification process, starts the motor. The motor drives the connecting shaft to rotate, and the connecting shaft drives the long pin to rotate through the pulley. At this time, the mixing blades play a basic mixing role. At the same time, under the action of the thrust of the pushing block, the guiding plate and the connecting spring, the stress plate makes a reciprocating linear motion in the horizontal direction. At this time, the stress plate drives the sleeve to rotate inside the purification tank through the external rod, the tooth block and the gear. When the sleeve rotates, it drives the rotating shaft and the stirring blades to rotate. At this time, the stirring blades play a role in assisting stirring from the side, optimizing the mixing effect of the medicament and the waste liquid.

[0018] Furthermore, during the rotation of the sleeve and the rotating shaft, the circular plate at the end of the rotating shaft rotates synchronously. At this time, the inner magnet on the surface of the circular plate will intermittently approach the outer magnet on the surface of the purification tank. Then, under the action of the mutual attraction magnetic force and the reset spring, the rotating shaft moves inside the sleeve. At this time, the mixing effect of the rotating shaft and the stirring blades is better, making the mixing degree of the medicament and the waste liquid deeper.

[0019] In the methyl methacrylate harmful waste liquid circulation purification device, during the movement of the stress plate on the left side, the stress plate will intermittently squeeze the air bag through the extrusion plate. Then, the air bag supplies ammonia gas to the long pin through the discharge pipe and the connecting pipe, that is, the nozzle sprays ammonia gas. Ammonia gas is easily soluble in water, and the stirring effect can be achieved simultaneously during the bubbling ventilation process. Moreover, ammonia gas can promote the separation of organic substances, reduce emulsification, and improve the recovery efficiency.

[0020] In the methyl methacrylate harmful waste liquid circulation purification device, during operation, when the external rod moves in the horizontal direction, it will intermittently push the vertical rod through the auxiliary block. Then, under the action of the thrust and its own gravity, the vertical rod makes a reciprocating linear motion in the vertical direction. Then, the vertical rod will intermittently push the equipment plate, making the equipment plate swing inside the upper connecting plate under the action of the thrust and its own gravity. At this time, the effect of spraying the medicament by the equipment plate is better, and the medicament can be sprayed into the purification tank more evenly. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of the purification tank and the separation tank of the present invention; Figure 2 It is a schematic diagram of the connection structure of the purification tank and the separation tank of the present invention; Figure 3 It is a schematic diagram of the sectional state structure of the purification tank of the present invention; Figure 4 It is a schematic diagram of the connection structure of the purification tank and the connecting shaft of the present invention; Figure 5 It is a schematic diagram of the connection structure of the motor and the pushing block of the present invention; Figure 6 It is a schematic diagram of the distribution state structure of the stirring blades of the present invention; Figure 7 For the present inventionFigure 6 Schematic diagram of the enlarged structure at location A in [the figure]; Figure 8 Schematic diagram of the connection structure between the rotating shaft and the bushing of the present invention; Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at location B in [the figure]; Figure 10 Schematic diagram of the connection structure between the circular plate and the inner magnet of the present invention; Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at location C in [the figure]; Figure 12 Schematic diagram of the connection structure between the fixing plate and the airbag of the present invention; Figure 13 Schematic diagram of the connection structure between the airbag and the discharge pipe of the present invention; Figure 14 Schematic diagram of the connection structure between the external connecting rod and the auxiliary block of the present invention.

[0022] In the figure: 1, purification tank; 2, separation tank; 3, motor; 4, connecting shaft; 5, long pin; 6, mixing blade; 7, pulley; 8, rotating shaft; 9, bushing; 10, stirring blade; 11, guide plate; 12, stress plate; 13, pushing block; 14, connecting spring; 15, external connecting rod; 16, tooth block; 17, gear; 18, external magnet; 19, circular plate; 20, inner magnet; 21, return spring; 22, fixing plate; 23, airbag; 24, feed pipe; 25, discharge pipe; 26, connecting pipe; 27, nozzle; 28, upper connecting plate; 29, auxiliary block; 30, vertical rod; 31, equipment plate; 32, extrusion plate. Specific embodiments

[0023] 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 of 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.

[0024] The present invention provides the following technical solutions: A harmful waste liquid circulation purification device for methyl methacrylate.

[0025] Embodiment 1: By providing the long pin 5 and the connecting shaft 4, the mixing blade 6 realizes the most basic material mixing function. At the same time, by providing the separation tank 2, the waste liquid can be recycled and purified, as Figures 1 - 8As shown in the figure, it includes a purification tank 1 and a separation tank 2. A conveying pipe is arranged on the side of the purification tank 1, and the end of the conveying pipe is arranged inside the separation tank 2. The separation tank 2 is connected to the purification tank 1 through an external connecting pipe. An inlet pipe is arranged on the left side of the purification tank 1. A connecting shaft 4 is arranged inside the purification tank 1. A long pin 5 is rotatably arranged inside the purification tank 1. Mixing blades 6 are fixedly connected to the surfaces of both the long pin 5 and the connecting shaft 4. A convex part with an inverted "L" structure is arranged on the left side of the purification tank 1. A motor 3 is bolted at the position of the inverted "L" convex part. The output end of the motor 3 is fixedly connected to the connecting shaft 4. The connecting shaft 4 and the long pin 5 are connected through a pulley 7.

[0026] A pipe sleeve 9 is rotatably arranged inside the purification tank 1. A rotating shaft 8 is movably connected to the inside of the purification tank 1 through a reciprocating mechanism. The left side of the rotating shaft 8 is movably arranged inside the pipe sleeve 9. Stirring blades 10 are fixedly connected to the surface of the rotating shaft 8. A pushing block 13 is fixedly connected to the surface of the connecting shaft 4. A guiding plate 11 is fixedly connected to the outer wall of the purification tank 1. The top view of the guiding plate 11 is an inverted "U" shape. A stress plate 12 is sleeved and connected to the surface of the guiding plate 11.

[0027] During the use process, waste liquid is added into the purification tank 1 through a liquid adding pipe. Chemical agents are added into the purification tank 1 through an equipment plate 31. During the purification process, the motor 3 is started. The motor 3 drives the connecting shaft 4 to rotate. The connecting shaft 4 drives the long pin 5 to rotate through a pulley 7. At this time, the mixing blades 6 play a basic mixing role. At the same time, the pushing block 13 intermittently pushes the stress plate 12. When the stress plate 12 is pushed, the stress plate 12 moves on the surface of the guiding plate 11 in the direction of squeezing the connecting spring 14. When the stress plate 12 is not pushed, the stress plate 12 moves back under the action of the connecting spring 14. Repeating the above process, the stress plate 12 makes a reciprocating linear motion in the horizontal direction. At this time, the stress plate 12 drives the pipe sleeve 9 to rotate inside the purification tank 1 through an external connecting rod 15, a tooth block 16 and a gear 17. When the pipe sleeve 9 rotates, it drives the rotating shaft 8 and the stirring blades 10 to rotate. At this time, the stirring blades 10 play a role of auxiliary stirring on the side, optimizing the mixing effect of the chemical agent and the waste liquid. After preliminary purification, the waste liquid enters the separation tank 2. After the liquid and liquid are separated by standing in the separation tank 2, the organic phase is conveyed into the purification tank 1 through the conveying pipe for re-purification. Repeating the above process, the cyclic purification is finally realized.

[0028] Embodiment 2: Different from Embodiment 1, by arranging an inner magnet 20 and an outer magnet 18, the rotating shaft 8 can be moved in the horizontal direction, optimizing the mixing effect of the stirring blades 10. For example Figures 8 - 11As shown in the figure, a connecting spring 14 is fixedly connected to the surface of the force-bearing plate 12, and the other side of the connecting spring 14 is fixedly connected to the inner wall of the guide plate 11. The guide plates 11 are symmetrically distributed on both sides of the purification tank 1. An external rod 15 is fixedly connected to the outer wall of the force-bearing plate 12.

[0029] Equidistantly fixed to the lower surface of the external rod 15 are tooth blocks 16. The reciprocating mechanism includes an external magnet 18 fixedly connected to the outer wall of the purification tank 1. The end of the rotating shaft 8 is fixedly connected to a circular plate 19, and an internal magnet 20 is fixedly connected to the inner wall of the circular plate 19. A gear 17 engaged with the tooth blocks 16 is fixedly connected to the surface of the pipe sleeve 9. The internal magnets 20 are equidistantly distributed on the inner wall of the circular plate 19, and the magnetic poles on the surface of the internal magnet 20 are opposite to the magnetic poles on the surface of the external magnet 18. The part of the rotating shaft 8 located inside the pipe sleeve 9 is convex, and the inside of the pipe sleeve 9 is concave. A return spring 21 is fixedly connected to the surface of the rotating shaft 8, and the other side of the return spring 21 is fixedly connected to the inner wall of the pipe sleeve 9.

[0030] When the pipe sleeve 9 and the rotating shaft 8 rotate, the rotating shaft 8 will drive the circular plate 19 and the internal magnet 20 to rotate synchronously. At this time, the internal magnet 20 will intermittently approach the external magnet 18. When the internal magnet 20 approaches the external magnet 18, under the action of the mutual attraction magnetic force, the circular plate 19 and the rotating shaft 8 move in the direction of squeezing the return spring 21. When the internal magnet 20 moves away from the external magnet 18, the rotating shaft 8 moves toward the outside of the pipe sleeve 9 under the action of the return spring 21. Repeating the above process, the rotating shaft 8 drives the stirring blade 10 to move in the horizontal direction. At this time, the mixing effect of the stirring blade 10 is better.

[0031] Embodiment 3: By providing the airbag 23 and the nozzle 27, ammonia gas can be introduced into the purification tank 1 when the long pin 5 rotates, optimizing the mixing effect. As Figure 12 and Figure 13 shown in the figure, a fixing plate 22 is fixedly connected to the surface of the purification tank 1, and an airbag 23 is adhesively bonded to the surface of the fixing plate 22; a nozzle 27 is fixedly connected to the surface of the long pin 5; an extrusion plate 32 is fixedly connected to the surface of the left force-bearing plate 12, and the surface of the extrusion plate 32 is in contact with the surface of the airbag 23. A feed pipe 24 is fixedly connected to the side of the airbag 23, and a discharge pipe 25 is fixedly connected to the lower surface of the airbag 23. The feed pipe 24 is connected to the output end of an external feeding device. The nozzles 27 are equidistantly distributed on the surface of the long pin 5. The outer wall of the purification tank 1 is convex, and a connecting pipe 26 is fixedly connected to the inside of the convex position of the purification tank 1. The end of the connecting pipe 26 is located inside the long pin 5, and the connecting pipe 26 is connected to the discharge pipe 25 through an external hose. Check valves are fixedly connected to the surfaces of both the discharge pipe 25 and the feed pipe 24.

[0032] During the movement of the force-bearing plate 12 on the left side, the force-bearing plate 12 intermittently squeezes the airbag 23 through the squeezing plate 32. Then, the airbag 23 supplies ammonia gas to the long pin 5 through the discharge pipe 25 and the connecting pipe 26, that is, the nozzle 27 sprays ammonia gas. Ammonia gas is easily soluble in water, and the stirring effect can be achieved simultaneously during the bubbling ventilation process. Moreover, ammonia gas can promote the separation of organic substances, reduce emulsification, and improve the recovery efficiency. When the airbag 23 is not squeezed, ammonia gas inside the feeding device is inhaled into the airbag 23 through the feeding pipe 24, facilitating the next use of the airbag 23. The one-way valve makes the air flow direction from the airbag 23 to the nozzle 27, ensuring the stability of the air flow operation.

[0033] Example 4: Different from Example 3, through the provided swinging mechanism, the equipment plate 31 can swing inside the upper connecting plate 28, expanding the working range of the equipment plate 31. As Figure 14 shown, the upper surface of the purification tank 1 is movably connected with the equipment plate 31 through the swinging mechanism. The swinging mechanism includes the upper connecting plate 28 fixedly connected to the upper surface of the purification tank 1, and the equipment plate 31 is rotatably arranged inside the upper connecting plate 28. The equipment plate 31 is connected to the output end of the external feeding device through an external hose, and the lower surface of the equipment plate 31 is attached to the vertical rod 30.

[0034] The vertical rod 30 is slidably arranged at the protruding position of the purification tank 1. The upper surface of the external connecting rod 15 is fixedly connected with the auxiliary block 29, and the auxiliary blocks 29 are evenly distributed on the upper surface of the external connecting rod 15. The left and right sides of the auxiliary block 29 are both inclined.

[0035] During operation, when the external connecting rod 15 moves horizontally, it intermittently pushes the vertical rod 30 through the auxiliary block 29. Then, the vertical rod 30 will perform reciprocating linear motion in the vertical direction under the action of the thrust and its own gravity. Further, the vertical rod 30 intermittently pushes the equipment plate 31. When the equipment plate 31 is pushed, the equipment plate 31 rotates upward inside the upper connecting plate 28. When the equipment plate 31 is not pushed by the vertical rod 30, the equipment plate 31 rotates back under the action of its own gravity. Repeating the above process, the equipment plate 31 swings inside the upper connecting plate 28 under the action of the thrust and its own gravity. At this time, the effect of spraying the medicament by the equipment plate 31 is better, and the medicament can be sprayed into the purification tank 1 more evenly. The lower surface of the vertical rod 30 is provided with rollers, which play a role in assisting the movement of the vertical rod 30 and making the operation of the vertical rod 30 smoother.

[0036] The above is the working process of the entire device, and the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A harmful waste liquid circulation purification device for methyl methacrylate, comprising a purification pool (1) and a separation tank (2). A conveying pipe is arranged on the side of the purification pool (1), and the end of the conveying pipe is arranged inside the separation tank (2). The separation tank (2) is connected to the purification pool (1) through an external connecting pipe. An inlet pipe is arranged on the left side of the purification pool (1). It is characterized in that: A connecting shaft (4) is arranged inside the purification pool (1). A long pin (5) is rotatably arranged inside the purification pool (1). Mixing blades (6) are fixedly connected to the surfaces of both the long pin (5) and the connecting shaft (4). A nozzle (27) is fixedly connected to the surface of the long pin (5). A fixing plate (22) is fixedly connected to the surface of the purification pool (1), and an air bag (23) is adhesively connected to the surface of the fixing plate (22). A pipe sleeve (9) is rotatably arranged inside the purification pool (1). A rotating shaft (8) is movably connected to the inside of the purification pool (1) through a reciprocating mechanism. The left side of the rotating shaft (8) is movably arranged inside the pipe sleeve (9). Stirring blades (10) are fixedly connected to the surface of the rotating shaft (8). The upper surface of the purification pool (1) is movably connected to an equipment plate (31) through a swinging mechanism.

2. The methyl methacrylate harmful waste liquid recycling and purification device according to claim 1, characterized in that: A convex part with an inverted "L" structure is arranged on the left side of the purification pool (1). A motor (3) is bolted at the position of the inverted "L" convex part. The output end of the motor (3) is fixedly connected to the connecting shaft (4). The connecting shaft (4) and the long pin (5) are connected through a pulley (7).

3. The methyl methacrylate harmful waste liquid circulation and purification device according to claim 1, characterized in that: A push block (13) is fixedly connected to the surface of the connecting shaft (4). A guide plate (11) is fixedly connected to the outer wall of the purification pool (1). The top view of the guide plate (11) is an inverted "U" shape. A stress plate (12) is sleeved and connected to the surface of the guide plate (11).

4. A methyl methacrylate harmful waste liquid recycling and purification device according to claim 3, characterized in that: A connecting spring (14) is fixedly connected to the surface of the stress plate (12). The other side of the connecting spring (14) is fixedly connected to the inner wall of the guide plate (11). The guide plates (11) are symmetrically distributed on both sides of the purification pool (1). An external connecting rod (15) is fixedly connected to the outer wall of the stress plate (12).

5. The methyl methacrylate harmful waste liquid recycling and purification device according to claim 4, characterized in that: Tooth blocks (16) are fixedly connected to the lower surface of the external connecting rod (15) at equal intervals. The reciprocating mechanism includes an external magnet (18) fixedly connected to the outer wall of the purification pool (1). A circular plate (19) is fixedly connected to the end of the rotating shaft (8). An internal magnet (20) is fixedly connected to the inner wall of the circular plate (19). A gear (17) meshing with the tooth blocks (16) is fixedly connected to the surface of the pipe sleeve (9).

6. A methyl methacrylate harmful waste liquid recycling and purification device according to claim 5, characterized in that: The internal magnets (20) are equally spaced on the inner wall of the circular plate (19). The magnetic poles on the surface of the internal magnets (20) are opposite to the magnetic poles on the surface of the external magnet (18). The part of the rotating shaft (8) located inside the pipe sleeve (9) is convex, and the inside of the pipe sleeve (9) is concave. A return spring (21) is fixedly connected to the surface of the rotating shaft (8). The other side of the return spring (21) is fixedly connected to the inner wall of the pipe sleeve (9).

7. A methyl methacrylate harmful waste liquid recycling and purification device according to claim 3, characterized in that: A pressing plate (32) is fixedly connected to the surface of the force-bearing plate (12) on the left side. The surface of the pressing plate (32) is in contact with the surface of the airbag (23). A feed pipe (24) is fixedly connected to the side of the airbag (23), and a discharge pipe (25) is fixedly connected to the lower surface of the airbag (23). The feed pipe (24) is connected to the output end of an external feeding device. The nozzles (27) are evenly distributed on the surface of the long pin (5).

8. A methyl methacrylate harmful waste liquid circulation purification device according to claim 7, characterized in that: The outer wall of the purification tank (1) is convex. A connecting pipe (26) is fixedly connected inside the convex position of the purification tank (1). The end of the connecting pipe (26) is located inside the long pin (5). The connecting pipe (26) is connected to the discharge pipe (25) through an external hose. Check valves are fixedly connected to the surfaces of both the discharge pipe (25) and the feed pipe (24).

9. A methyl methacrylate harmful waste liquid circulation purification device according to claim 4, characterized in that: The swing mechanism includes an upper connecting plate (28) fixedly connected to the upper surface of the purification tank (1). A device plate (31) is rotatably arranged inside the upper connecting plate (28). The device plate (31) is connected to the output end of an external feeding device through an external hose. A vertical rod (30) is in contact with the lower surface of the device plate (31).

10. A methyl methacrylate harmful waste liquid recycling and purification device according to claim 9, characterized in that: The vertical rod (30) is slidably arranged at the convex position of the purification tank (1). An auxiliary block (29) is fixedly connected to the upper surface of the external connecting rod (15). The auxiliary blocks (29) are evenly distributed on the upper surface of the external connecting rod (15). Both the left and right sides of the auxiliary block (29) are inclined.

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