A wastewater treatment device for pharmaceutical intermediates

Abstract

The utility model relates to the technical field of pharmaceutical intermediate processing, and discloses a wastewater treatment device for pharmaceutical intermediates, including a treatment tank, a rotary cover is rotatably arranged inside the treatment tank, a funnel-shaped separation screen is fixedly connected to the bottom of the rotary cover, the bottom of the separation screen is fixedly connected to a discharge pipe, and a first solenoid valve is arranged in the discharge pipe; the end of the discharge pipe away from the separation screen passes through the treatment tank and is sealed and rotatably connected with the treatment tank; the top of the treatment tank is connected to a liquid inlet pipe, the liquid inlet pipe passes through the rotary cover and is connected to the inside of the separation screen; the liquid inlet pipe is coaxially rotatably connected with the rotary cover; a motor is fixedly arranged on the top of the treatment tank, and the output shaft of the motor is connected to the rotary cover through a first transmission mechanism. The output shaft of the motor of the utility model drives the rotary cover to rotate through the first transmission mechanism, the rotation of the rotary cover drives the screening net to rotate, the screening net drives the solid to rotate, and the liquid attached to the solid is thrown out under the action of centrifugal force, the solid-liquid separation is more thorough, and the risk of pollution is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical intermediate processing, in particular to a wastewater treatment device for pharmaceutical intermediates. Background Art

[0002] The main characteristics of pharmaceutical intermediate wastewater are complex water quality, unstable water volume, high COD, and difficult biochemical treatment. Intermediate wastewater is high-concentration organic wastewater, containing large suspended particles, such as fibrous substances. If these suspended particles are not separated and removed first, it will inevitably affect the normal progress of subsequent treatment processes. Generally, grids are used to intercept suspended matter in wastewater, and coagulation sedimentation or flotation is used to remove impurities in wastewater after adjustment.

[0003] The disclosure discloses a fully automatic real-time belt deviation correction device, which comprises a processing tank, a feed trough is provided on the top of the processing tank, a sealing mechanism is provided in the inner cavity of the feed trough, and a top plate, a circular plate and a sealing ring are provided. The circular plate is inserted into the feed trough and then cooperates with the sealing ring to achieve the sealing operation of the inside of the feed trough; the solid-liquid separation of the wastewater is achieved by providing a filter screen, a vertical pipe, a hose and a discharge pipe.

[0004] Based on the above technical features, the problem that arises is that in the prior art, solid-liquid separation is generally performed through a screen. After the solid-liquid separation, a small amount of liquid will generally adhere to the surface of the solid, and the separation is not thorough, which can easily cause pollution.

[0005] Therefore, it is necessary to solve the above problems through a wastewater treatment device for pharmaceutical intermediates. Summary of the invention

[0006] The purpose of the utility model is to provide a wastewater treatment device for pharmaceutical intermediates to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a wastewater treatment device for pharmaceutical intermediates, comprising a treatment tank, a rotating cover is coaxially rotatably arranged inside the treatment tank, a funnel-shaped separation screen is coaxially fixedly connected to the bottom of the rotating cover, the bottom of the separation screen is coaxially fixedly connected to a discharge pipe, a first solenoid valve is arranged in the discharge pipe; the end of the discharge pipe away from the separation screen passes through the treatment tank and is sealed and rotatably connected to the treatment tank; the top of the treatment tank is connected to a liquid inlet pipe, the liquid inlet pipe passes through the rotating cover and is connected to the inside of the separation screen; the liquid inlet pipe is coaxially rotatably connected to the rotating cover; a motor is fixedly arranged on the top of the treatment tank, and the output shaft of the motor is transmission-connected to the rotating cover through a first transmission mechanism for driving the rotating cover to rotate.

[0008] Preferably, the first transmission mechanism includes a second driving gear, a second driven gear and a rotating sleeve; the rotating sleeve is coaxially fixedly connected to the rotating cover, and the rotating sleeve passes through the processing tank and is rotatably connected to the processing tank; the second driven gear is in transmission cooperation with the rotating sleeve, and the rotating sleeve and the second driven gear are both rotatably sleeved on the liquid inlet pipe; the second driving gear is fixedly sleeved on the output shaft of the motor, and the second driving gear is meshingly cooperated with the second driven gear.

[0009] Preferably, the processing tank is fixedly connected to a medicine supply pipe, in which a second solenoid valve is fixedly arranged; a plurality of stirring rods are fixedly arranged on the outer circumferential surface of the discharge pipe; the processing tank is fixedly connected to a liquid outlet pipe, in which a third solenoid valve is fixedly arranged.

[0010] Preferably, the bottom of the liquid inlet pipe is fixedly connected to a curved pipe, which is away from the pipe mouth of the liquid inlet pipe and faces the curved inner wall of the separation screen; the liquid inlet pipe is connected to the output shaft of the motor through a second transmission mechanism to drive the liquid inlet pipe to rotate.

[0011] Preferably, the second transmission mechanism includes a first driving gear and a first driven gear, the first driven gear is transmission-sleeved on the liquid inlet pipe, the first driving gear is fixedly sleeved on the output shaft of the motor, and the first driving gear is meshed with the first driven gear.

[0012] Preferably, a clamping block is fixedly provided on the inner curved surface of the first driven gear, a sliding groove is axially provided on the tube body of the liquid inlet pipe, the clamping block is inserted into the sliding groove and slidingly engaged with the sliding groove; the second driven gear is slidingly sleeved on the liquid inlet pipe and a plurality of transmission rods are fixedly provided at the bottom, a plurality of plug-in grooves are provided on the top of the rotating sleeve, the plurality of transmission rods correspond to the plurality of plug-in grooves one by one and are plug-engaged in transmission; the first driven gear and the second driven gear are both located between the first driving gear and the second driving gear, and the first driven gear and the second driven gear are transmission-connected to the same toggle mechanism.

[0013] Preferably, the toggle mechanism includes an electric push rod, which is fixedly arranged on the top of the processing tank; the output end of the electric push rod is fixedly connected to a push plate, and the push plate is fixedly connected to a connecting ring, and the connecting ring is slidably mounted on the liquid inlet pipe; the connecting ring is located between the first driven gear and the second driven gear, and the first driven gear and the second driven gear are both rotatably connected to the connecting ring.

[0014] Technical effects and advantages of the utility model:

[0015] First, after the screening net of the utility model leaves the solids in the liquid, the output shaft of the motor drives the rotary cover to rotate through the first transmission mechanism, the rotation of the rotary cover drives the screening net to rotate, and the screening net drives the solids to rotate. Under the action of centrifugal force, the liquid attached to the solid is thrown out, the solid-liquid separation is more thorough, and the risk of pollution is reduced.

[0016] Second, the stirring rod in the utility model is fixedly arranged on the outer curved surface of the discharge pipe. The screen mesh rotates while driving the discharge pipe to rotate. The discharge pipe drives the stirring rod to stir the wastewater containing the pharmaceutical intermediates. No separate driving source is required, the driving source is reduced, and the structure is simple.

[0017] Third, when the utility model adds liquid through the liquid inlet pipe, the liquid inlet pipe rotates relative to the screening net, and the position of the pipe mouth changes relative to the screening net. The solids in the wastewater are evenly spread in the screening net and are not concentrated in only one direction. The center of gravity does not shift, ensuring stable rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a semi-section schematic diagram of the utility model;

[0020] Figure 3 It is a partial cross-sectional schematic diagram of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the utility model;

[0022] Figure 5 It is a partial transmission schematic diagram of the utility model.

[0023] In the figure: 1. treatment tank; 2. mounting plate; 3. support frame; 4. liquid inlet pipe; 5. separation screen; 6. discharge pipe; 7. rotating cover; 8. rotating sleeve; 9. stirring rod; 10. medicine feeding pipe; 11. liquid discharge pipe; 12. electric push rod; 13. motor; 14. push plate; 15. connecting ring; 16. first driven gear; 17. second driven gear; 18. transmission rod; 19. plug-in slot; 20. first driving gear; 21. second driving gear; 22. first solenoid valve; 23. second solenoid valve; 24. third solenoid valve. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] Embodiment 1

[0026] The utility model provides a wastewater treatment device for pharmaceutical intermediates, comprising a treatment tank 1. The treatment tank 1 is cylindrical. Figure 1 As shown, the treatment tank 1 is fixedly connected to the drug supply pipe 10 and the liquid outlet pipe 11. Figure 3 As shown, a second solenoid valve 23 is fixedly installed in the medicine feeding pipe 10 to control the addition of flocculants into the treatment tank 1. The flocculants react with substances in the liquid to form flocs. A third solenoid valve 24 is fixedly installed in the liquid outlet pipe 11 to control the outflow of liquid in the treatment tank 1.

[0027] like Figure 2 As shown, a disc-shaped rotary cover 7 is rotatably mounted in the processing tank 1, and the rotary cover 7 is coaxially rotatably connected to the processing tank 1. The rotary cover 7 is close to the top tank body of the processing tank 1. The bottom of the rotary cover 7 is coaxially fixedly connected to a funnel-shaped separation screen 5, and a plurality of sieve holes are drilled on the separation screen 5. It is used to discharge liquid. The bottom of the separation screen 5 is coaxially fixedly connected to a discharge pipe 6, and the bottom of the discharge pipe 6 passes downward through the bottom tank body of the processing tank 1 and is sealed and rotatably connected to the tank body. A first solenoid valve 22 is fixedly assembled in the discharge pipe 6, and the first solenoid valve 22 is located at the bottom end of the separation screen 5, and is used to control the solid in the separation screen 5 to flow out from the discharge pipe 6. A plurality of stirring rods 9 are welded on the outer circumferential surface of the discharge pipe 6, and each stirring rod 9 is arranged along the radial direction of the discharge pipe 6, and the plurality of stirring rods 9 are evenly distributed on the outer circumferential surface of the discharge pipe 6 along the circumference of the discharge pipe 6. The stirring rod 9 is used to stir the liquid.

[0028] A vertical liquid inlet pipe 4 is coaxially inserted into the treatment tank 1, and the liquid inlet pipe 4 passes through the top tank body of the treatment tank 1, the rotary cover 7 and communicates with the separation screen 5. The liquid inlet pipe 4 is rotatably connected to the rotary cover 7. Wastewater enters the treatment tank 1 through the liquid inlet pipe 4 and is separated into solid and liquid through the separation screen 5.

[0029] The top of the treatment tank 1 is welded with a support frame 3, the top of the support frame 3 is welded with a mounting plate 2, and the liquid inlet pipe 4 passes through the mounting plate 2 and is rotatably connected to the mounting plate 2. The top of the mounting plate 2 is bolted with a motor 13, and the output shaft of the motor 13 passes vertically downward through the mounting plate 2 and is inserted into the tank body at the top of the treatment tank 1. The output shaft of the motor 13 is rotatably connected to both the mounting plate 2 and the top tank body of the treatment tank 1.

[0030] The output shaft of the motor 13 is connected to the rotary cover 7 through a first transmission mechanism. The output shaft of the motor 13 drives the rotary cover 7 to rotate along its own axis through the first transmission mechanism, and the rotary cover 7 drives the separation screen 5 to rotate along its own axis. The first transmission mechanism includes an I-shaped rotating sleeve 8, a second driven gear 17, and a second driving gear 21. The rotating sleeve 8 is rotatably sleeved on the liquid inlet pipe 4. The rotating sleeve 8 is coaxially fixedly connected with the rotary cover 7. The rotating sleeve 8 passes through the top tank body of the processing tank 1 upward and is rotatably connected with the tank body. The top of the rotating sleeve 8 is coaxially connected to the second driven gear 17, and the second driven gear 17 is rotatably sleeved on the liquid inlet pipe 4. The second driving gear 21 is fixedly sleeved on the output shaft of the motor 13, and the second driving gear 21 is meshed with the second driven gear 17.

[0031] Working principle of embodiment 1:

[0032] In the initial state, the first solenoid valve 22 , the second solenoid valve 23 and the third solenoid valve 24 are all in a closed state.

[0033] When in use, wastewater is added into the treatment tank 1 through the liquid inlet pipe 4, and the wastewater is sprayed into the separation screen 5 through the liquid inlet pipe 4. Then, the liquid in the wastewater flows into the treatment tank 1 through the sieve holes of the separation screen 5, and the solid in the wastewater remains in the separation screen 5.

[0034] After a certain amount of wastewater is added, the liquid covers all the stirring rods 9, then stop adding wastewater, and start the motor 13, the output shaft of the motor 13 drives the second driving gear 21 to rotate, the second driving gear 21 drives the second driven gear 17 to rotate, the second driven gear 17 drives the rotating sleeve 8 to rotate, the rotating sleeve 8 drives the rotating cover 7 to rotate, the rotating cover 7 drives the separation screen 5 to rotate, the separation screen 5 drives the discharge pipe 6 to rotate, and the discharge pipe 6 drives the stirring rod 9 to stir the liquid. At the same time, the second solenoid valve 23 is opened, and a certain amount of flocculant is added to the treatment tank 1 through the medicine tube 10. In the process of stirring the liquid by the stirring rod 9, the reaction between the flocculant and the substances in the liquid is accelerated, thereby accelerating the generation of flocs.

[0035] During the rotation of the separation screen 5, the solid adheres to the inner wall of the separation screen 5 and revolves around the central axis of the separation screen 5. As a result, under the action of centrifugal force, the liquid attached to the solid is thrown out and flows into the liquid inside the treatment tank 1 through the sieve holes on the separation screen 5 to react with the flocculant.

[0036] When the liquid on the solid is dried, the motor 13 is turned off, and the first electromagnetic valve 22 is opened, and the solid flows out through the discharge pipe 6. When the flocculation reaction is completed, the third electromagnetic valve 24 is opened, and the floccules and liquid flow out through the liquid discharge pipe 11.

[0037] Embodiment 2

[0038] The difference between this embodiment and the first embodiment is that the bottom of the liquid inlet pipe 4 is fixedly connected to the elbow, the elbow is located in the separation screen 5, and the pipe opening faces the curved inner wall of the separation screen 5. The liquid inlet pipe 4 is connected to the output shaft of the motor 13 through the second transmission mechanism, and the liquid inlet pipe 4 is driven to rotate by the second transmission mechanism, and the liquid inlet pipe 4 drives the elbow to rotate, and the elbow rotates relative to the inner wall of the separation screen 5, ensuring that the solids in the separation screen 5 can be laid relatively evenly in the separation screen 5 to prevent the center of gravity from shifting during rotation.

[0039] The second transmission mechanism includes a first driven gear 16 and a first driving gear 20 . The first driving gear 20 is fixedly sleeved on the output shaft of the motor 13 . The first driven gear 16 is transmission sleeved on the liquid inlet pipe 4 . The first driving gear 20 meshes with the first driven gear 16 .

[0040] Working principle of the second embodiment:

[0041] When the motor 13 is started, the output shaft of the motor 13 drives the first driving gear 20 and the second driving gear 21 to rotate. The first driving gear 20 drives the first driven gear 16 to rotate, and the first driven gear 16 drives the liquid inlet pipe 4 to rotate. By setting the first driven gear 16, the second driven gear 17, the first driving gear 20 and the second driving gear 21 of different specifications, a speed difference is formed between the liquid inlet pipe 4 and the separation screen 5, so that the curved pipe rotates relative to the inner wall of the separation screen 5.

[0042] The other working processes of this working principle are the same as those of the first embodiment.

[0043] Embodiment 3

[0044] In order to improve the adaptability of the entire device, on the basis of the second embodiment, a toggle mechanism is added between the first driven gear 16 and the second driven gear 17. Figure 5 As shown, the first driven gear 16 is slidably sleeved on the liquid inlet pipe 4, a fixed clamping block is welded on the inner circumferential surface of the first driven gear 16, a slide groove is cut axially on the tube body of the liquid inlet pipe 4, and the clamping block is slidably clamped in the slide groove, ensuring that the first driven gear 16 can both drive the liquid inlet pipe 4 to rotate and slide up and down along the axial direction of the liquid inlet pipe 4.

[0045] like Figure 4 As shown, the second driven gear 17 is slidably sleeved on the liquid inlet pipe 4 and is rotatably connected to the liquid inlet pipe 4, and a plurality of vertical transmission rods 18 are welded and fixed to the bottom of the second driven gear 17. A plurality of vertical plug-in slots 19 are drilled on the top of the rotating sleeve 8, and the plurality of transmission rods 18 correspond to the plurality of plug-in slots 19 one by one, and each transmission rod 18 is plug-in-transmission matched with the corresponding plug-in slot 19, and the second driven gear 17 is transmission-connected to the rotating sleeve 8 through the plug-in transmission match of the plurality of transmission rods 18 and the plurality of plug-in slots 19.

[0046] The toggle mechanism includes an electric push rod 12, which is bolted to the mounting plate 2 above the treatment tank 1, and the output end of the electric push rod 12 vertically passes through the mounting plate 2 downward and slides with the mounting plate 2. The output end of the electric push rod 12 is fixedly connected to a horizontal push plate 14, and the end of the push plate 14 away from the output end of the electric push rod 12 is fixedly connected to a connecting ring 15, which is slidably sleeved on the liquid inlet pipe 4, and the connecting ring 15 is located between the first driven gear 16 and the second driven gear 17, and the first driven gear 16 and the second driven gear 17 are both located between the first driving gear 20 and the second driving gear 21. The top end of the connecting ring 15 is coaxially connected to the first driven gear 16, and the bottom end of the connecting ring 15 is coaxially connected to the second driven gear 17. It is ensured that when the first driving gear 20 is meshed with the first driven gear 16 , the second driving gear 21 is not meshed with the second driven gear 17 ; when the second driving gear 21 is meshed with the second driven gear 17 , the first driving gear 20 is not meshed with the first driven gear 16 .

[0047] Working principle of embodiment 3:

[0048] During use, when the liquid inlet pipe 4 needs to rotate, the output end of the electric push rod 12 is retracted upward. During this process, the output end of the electric push rod 12 drives the push plate 14 to move upward, and the push plate 14 drives the connecting ring 15 to slide upward along the axial direction of the liquid inlet pipe 4. The connecting ring 15 drives the first driven gear 16 and the second driven gear 17 to slide upward along the axial direction of the liquid inlet pipe 4. When the first driven gear 16 is fully meshed with the first driving gear 20, the electric push rod 12 is closed. At this time, the second driven gear 17 is disengaged from the second driving gear 21.

[0049] Then the motor 13 is started, the output shaft of the motor 13 drives the first driving gear 20 and the second driving gear 21 to rotate, the first driving gear 20 drives the first driven gear 16 to rotate, the first driven gear 16 drives the liquid inlet pipe 4 to rotate, and the liquid inlet pipe 4 drives the curved pipe to rotate. In this process, the second driving gear 21 is idle, and the separation screen 5 is in a stationary state.

[0050] When the separation screen 5 needs to rotate, the output end of the electric push rod 12 extends. In this process, the output end of the electric push rod 12 drives the push plate 14 to move downward, and the push plate 14 drives the connecting ring 15 to slide downward along the axial direction of the liquid inlet pipe 4. The connecting ring 15 drives the first driven gear 16 and the second driven gear 17 to slide downward along the axial direction of the liquid inlet pipe 4. The second driven gear 17 drives the transmission rod 18 to be inserted into the corresponding plug-in groove 19, and the second driven gear 17 is connected to the rotating sleeve 8. When the second driven gear 17 is fully meshed with the second driving gear 21, the electric push rod 12 is closed. At this time, the first driven gear 16 is disengaged from the first driving gear 20.

[0051] Then the motor 13 is started, the output shaft of the motor 13 drives the first driving gear 20 and the second driving gear 21 to rotate, the second driving gear 21 drives the second driven gear 17 to rotate, the second driven gear 17 drives the rotating sleeve 8 to rotate, the rotating sleeve 8 drives the rotating cover 7 to rotate, and the rotating cover 7 drives the separation screen 5 to rotate. In this process, the first driven gear 16 is idle, and the liquid inlet pipe 4 is in a stationary state.

[0052] In this embodiment, the specifications of the gear set are not limited and the adaptability is stronger.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wastewater treatment device for pharmaceutical intermediates, comprising a treatment tank (1), characterized in that: A rotating cover (7) is coaxially rotatably arranged inside the processing tank (1), the bottom of the rotating cover (7) is coaxially fixedly connected to a funnel-shaped separation screen (5), the bottom of the separation screen (5) is coaxially fixedly connected to a discharge pipe (6), and a first solenoid valve (22) is arranged inside the discharge pipe (6); the end of the discharge pipe (6) away from the separation screen (5) passes through the processing tank (1) and is sealed and rotatably connected to the processing tank (1); the top of the processing tank (1) is connected to a liquid inlet pipe (4), the liquid inlet pipe (4) passes through the rotating cover (7) and is connected to the inside of the separation screen (5); the liquid inlet pipe (4) is coaxially rotatably connected to the rotating cover (7); a motor (13) is fixedly arranged on the top of the processing tank (1), the output shaft of the motor (13) is transmission-connected to the rotating cover (7) through a first transmission mechanism, and is used to drive the rotating cover (7) to rotate.

2. A pharmaceutical intermediate wastewater treatment device according to claim 1, characterized in that: The first transmission mechanism comprises a second driving gear (21), a second driven gear (17) and a rotating sleeve (8); the rotating sleeve (8) is coaxially fixedly connected to the rotating cover (7), and the rotating sleeve (8) passes through the processing tank (1) and is rotatably connected to the processing tank (1); the second driven gear (17) is in transmission cooperation with the rotating sleeve (8), and the rotating sleeve (8) and the second driven gear (17) are both rotatably sleeved on the liquid inlet pipe (4); the second driving gear (21) is fixedly sleeved on the output shaft of the motor (13), and the second driving gear (21) is meshingly cooperated with the second driven gear (17).

3. A wastewater treatment device for pharmaceutical intermediates according to claim 1, characterized in that: The processing tank (1) is fixedly connected to a medicine supply pipe (10), and a second solenoid valve (23) is fixedly arranged inside the medicine supply pipe (10); a plurality of stirring rods (9) are fixedly arranged on the outer circumferential curved surface of the discharge pipe (6); the processing tank (1) is fixedly connected to a liquid discharge pipe (11), and a third solenoid valve (24) is fixedly arranged inside the liquid discharge pipe (11).

4. A pharmaceutical intermediate wastewater treatment device according to claim 2, characterized in that: The bottom of the liquid inlet pipe (4) is fixedly connected to a curved pipe, which is away from the pipe opening of the liquid inlet pipe (4) and faces the curved inner wall of the separation screen (5); the liquid inlet pipe (4) is connected to the output shaft of the motor (13) through a second transmission mechanism, which is used to drive the liquid inlet pipe (4) to rotate.

5. A pharmaceutical intermediate wastewater treatment device according to claim 4, characterized in that: The second transmission mechanism comprises a first driving gear (20) and a first driven gear (16); the first driven gear (16) is transmission-sleeved on the liquid inlet pipe (4); the first driving gear (20) is fixedly sleeved on the output shaft of the motor (13); the first driving gear (20) is meshed with the first driven gear (16).

6. A wastewater treatment device for pharmaceutical intermediates according to claim 5, characterized in that: A clamping block is fixedly arranged on the inner curved surface of the first driven gear (16); a sliding groove is axially provided on the body of the liquid inlet pipe (4); the clamping block is inserted into the sliding groove and is slidably engaged with the sliding groove; the second driven gear (17) is slidably sleeved on the liquid inlet pipe (4) and a plurality of transmission rods (18) are fixedly arranged on the bottom; a plurality of plug-in grooves (19) are provided on the top of the rotating sleeve (8); the plurality of transmission rods (18) correspond to the plurality of plug-in grooves (19) one by one and are plug-engaged in transmission; the first driven gear (16) and the second driven gear (17) are both located between the first driving gear (20) and the second driving gear (21); the first driven gear (16) and the second driven gear (17) are transmission-connected to the same toggle mechanism.

7. A wastewater treatment device for pharmaceutical intermediates according to claim 6, characterized in that: The toggle mechanism comprises an electric push rod (12), which is fixedly arranged on the top of the processing tank (1); the output end of the electric push rod (12) is fixedly connected to a push plate (14), and the push plate (14) is fixedly connected to a connecting ring (15), and the connecting ring (15) is slidably sleeved on the liquid inlet pipe (4); the connecting ring (15) is located between a first driven gear (16) and a second driven gear (17), and the first driven gear (16) and the second driven gear (17) are both rotatably connected to the connecting ring (15).

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