Sewage treatment device for drug laboratory

Abstract

The invention relates to the technical field of sewage treatment, in particular to a drug laboratory sewage treatment device which comprises a sewage reaction box, a water inlet pipe for adding sewage into the sewage reaction box is arranged on the side face of the sewage reaction box, and a water outlet pipe for discharging sewage in the sewage reaction box is further arranged below the water inlet pipe. A medicament feeding mechanism for feeding a sewage medicament is arranged at the top of the sewage reaction tank; through cooperation of the chemical feeding mechanism, the transmission mechanism, the chemical feeding box, a servo motor, a first bevel gear, a second bevel gear, an eccentric wheel, a partition plate and other structures, sewage chemicals in the chemical feeding box are intermittently fed through the partition plate, and local high-concentration gathering of the chemicals is avoided; and a chelating agent, a flocculating agent and other key agents are fully mixed with sewage for multiple times in a small amount, so that side reaction easily caused in a local high-concentration area can be prevented, the utilization rate of the agents can be improved, and the treatment cost can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a pharmaceutical laboratory sewage treatment device. BACKGROUND

[0002] Pharmaceutical laboratory sewage is sewage generated in the process of drug synthesis, drug preparation or drug analysis. The pharmaceutical laboratory sewage contains a large amount of highly toxic and difficult-to-degrade pollutants. Direct discharge will cause harm to water bodies, soil and biological chains. For example, antibiotics entering natural water bodies can induce microorganisms to produce drug resistance genes, weakening the self-purification ability of water bodies. Therefore, the pharmaceutical laboratory sewage needs to be treated before being discharged to the outside world to meet the discharge standard of environmental protection requirements. This requires the use of a pharmaceutical laboratory sewage treatment device.

[0003] The existing pharmaceutical laboratory sewage treatment device adopts a one-time batch addition mode for reagent addition, which directly leads to uneven distribution of reagents in the sewage. Local high-concentration areas are prone to side reactions, and low-concentration areas cannot fully degrade pollutants due to insufficient reagents. Even if some processes are assisted by mixing, the reagents are difficult to uniformly contact with the sewage, which significantly reduces the utilization rate of key reagents such as chelating agents and flocculants, indirectly increasing the overall treatment cost. Therefore, a specific pharmaceutical laboratory sewage treatment device is urgently needed. SUMMARY

[0004] In order to overcome the shortcomings of the prior art, the present application provides a pharmaceutical laboratory sewage treatment device.

[0005] To solve the above technical problems, the present application provides the following technical scheme: A pharmaceutical laboratory sewage treatment device, comprising a sewage reaction tank, a water inlet pipe for adding sewage into the sewage reaction tank is arranged on the side of the sewage reaction tank, a water outlet pipe for discharging sewage in the sewage reaction tank is further arranged below the water inlet pipe, a reagent feeding mechanism for feeding sewage reagents is arranged on the top of the sewage reaction tank, the reagent feeding mechanism comprises a fixing frame fixed on the top of the sewage reaction tank, a reagent feeding box for intermittently feeding sewage reagents is arranged on the outer side of the fixing frame, an eccentric wheel is rotatably installed in the reagent feeding box, a stirring fan blade for stirring sewage is arranged below the fixing frame, a lifting rod for driving the stirring fan blade to lift is arranged on the side of the fixing frame away from the reagent feeding box, a transmission mechanism for driving the eccentric wheel to rotate is further arranged in the middle of the fixing frame, and a lifting mechanism for driving the lifting rod to lift is further arranged between the fixing frame and the lifting rod.

[0006] In a preferred embodiment of the present invention, the transmission mechanism includes a medicine dispensing box fixed to the top of a fixed frame. A first bevel gear is fixed to the output shaft of a servo motor. A second bevel gear is located at the bottom of the first bevel gear. The end of the second bevel gear away from the first bevel gear is fixed to an eccentric wheel. Several partition plates are also fixed to the outer wall of the eccentric wheel. A main dispensing port and a secondary dispensing port are symmetrically arranged at the top of the medicine dispensing box, and a medicine outlet is provided at the bottom of the medicine dispensing box for discharging the medicine. The first bevel gear meshes with the second bevel gear, and the second bevel gear is rotatably mounted. In the middle of the fixed frame, an eccentric wheel is eccentrically positioned inside the reagent dispensing tank. The reagent dispensing tank is fixed to the side of the fixed frame near the second bevel gear, and the end of the partition plate away from the eccentric wheel is in contact with the inner wall of the reagent dispensing tank. The output shaft of the servo motor drives the first bevel gear to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the eccentric wheel to rotate, causing the eccentric wheel to rotate eccentrically inside the reagent dispensing tank. The eccentric wheel drives the partition plate to rotate eccentrically inside the reagent dispensing tank, and several partition plates are used to separate the wastewater reagent put into the reagent dispensing tank.

[0007] As a preferred embodiment of the present invention, the outer wall of the agent dispensing tank is movably connected to two sliding plates, with a pull rod fixed between the two sliding plates. The outer wall of the agent dispensing tank is also fixed with several limiting posts to limit the sliding plates. A storage tank for temporarily storing wastewater agents is also provided in the middle of the partition plate. The length of both sliding plates is greater than the main dispensing port and the auxiliary dispensing port. One sliding plate blocks the auxiliary dispensing port. When multiple different types of agents need to be dispensed, the pull rod is pulled along the outer wall of the agent dispensing tank, causing the two sliding plates to rotate around the axis of the agent dispensing tank. Both sliding plates move to the sides of the main dispensing port and the auxiliary dispensing port, allowing agents to be dispensed into the agent dispensing tank through the main dispensing port and the auxiliary dispensing port respectively. Two different agents can flow into the outlet on both sides of the eccentric wheel, enabling simultaneous dispensing of multiple different types of agents. Simultaneously, the agent in the auxiliary dispensing port can be dispensed into the storage tank, allowing the two agents to mix before being added to the wastewater reaction tank.

[0008] In a preferred embodiment of the present invention, the lifting mechanism includes a third bevel gear disposed on the side of the first bevel gear away from the second bevel gear. A worm gear is fixed to the end of the third bevel gear away from the fixed frame. A worm wheel meshing with the worm gear is disposed below the worm gear. A U-shaped rod is fixed to the top of the lifting rod. Lifting wheels for driving the U-shaped rod to move up and down are disposed on both sides of the worm wheel. A connecting plate for driving the stirring fan blades to move up and down is also fixed to the bottom of the lifting rod. The top of the lifting rod extends above the wastewater reaction tank, and the U-shaped rod is disposed above the wastewater reaction tank. The lifting wheels are elliptical in shape. The third bevel gear meshes with the first bevel gear and is disposed below the first bevel gear. The worm gear is rotatably mounted on the side of the fixed frame away from the second bevel gear, and a rotating shaft is fixed in the middle of the worm gear. The lifting wheel is fixed at both ends of the rotating shaft. A mounting bracket is provided between the rotating shaft and the fixed frame. The rotating shaft is rotatably mounted on the side of the mounting bracket away from the fixed frame, and the mounting bracket is fixed on the side of the fixed frame away from the second bevel gear. When the servo motor drives the first bevel gear to rotate, the first bevel gear drives the third bevel gear to rotate, the third bevel gear drives the worm to rotate, the worm drives the worm wheel meshing with it to rotate, the worm wheel drives the lifting wheel to rotate through the rotating shaft, the lifting wheel drives the U-shaped rod to rise and fall, the U-shaped rod drives the lifting rod to rise and fall, and the lifting rod drives the stirring fan blades to rise and fall through the connecting plate.

[0009] As a preferred embodiment of the present invention, the outer wall of the slide plate is further fixed with a main clamping plate and a secondary clamping plate. A spring is also provided between the secondary clamping plate and the sewage reaction tank to drive the lifting rod to quickly reset. The main clamping plate is located above the sewage reaction tank. The main clamping plate and the secondary clamping plate are made of corrosion-resistant elastic material. When the worm gear drives the lifting wheel to rotate, the lifting wheel changes from a horizontal state to a vertical state. The lifting wheel drives the U-shaped rod to move the lifting rod upward. The lifting rod drives the secondary clamping plate to move upward. The secondary clamping plate compresses the spring. When the lifting wheel changes from a vertical state to a horizontal state, the spring releases pressure and pushes the secondary clamping plate to move downward quickly. The secondary clamping plate drives the lifting rod to move downward quickly. The lifting rod drives the stirring fan blade to move downward quickly through the connecting plate.

[0010] As a preferred embodiment of the present invention, a fourth bevel gear is provided below the second and third bevel gears. A transmission rod is fixed to the bottom of the fourth bevel gear, and a collar is fitted around the outside of the transmission rod. The bottom of the collar is fixed to the top of the stirring blade. The end of the connecting plate away from the lifting rod is rotatably connected to the collar. The fourth bevel gear meshes with the second and third bevel gears. The lower half of the transmission rod is inserted inside the wastewater reaction tank, and the stirring blade is located inside the wastewater reaction tank. When the second and third bevel gears rotate, they drive the fourth bevel gear to rotate. The fourth bevel gear drives the transmission rod to rotate, and the transmission rod drives the stirring blade to rotate. The stirring blade mixes the wastewater and wastewater reagent inside the wastewater reaction tank.

[0011] As a preferred embodiment of the present invention, the outer wall of the transmission rod is further fixed with a limiting block, and the middle of the collar and the stirring blade are both provided with through grooves adapted to the transmission rod. The inner wall of the through groove is also provided with a limiting groove adapted to the limiting block. The outer wall of the collar is also fixed with a positioning ring, and the end of the connecting plate away from the lifting rod is provided with a positioning groove adapted to the positioning ring. When the transmission rod rotates, the transmission rod drives the collar and the stirring blade to rotate through the cooperation of the limiting block and the limiting groove. Through the cooperation of the positioning ring and the positioning groove, the collar rotates around the axis of the transmission rod. By utilizing the cooperation of the positioning ring and the positioning groove, the stirring blade can rise and fall along the outer wall of the transmission rod while rotating.

[0012] As a preferred embodiment of the present invention, the top of the wastewater reaction tank is provided with a medicine inlet, and a baffle plate for opening and closing the medicine inlet is inserted at the end of the wastewater reaction tank away from the lifting rod. A handle is also fixed on the side of the baffle plate away from the wastewater reaction tank. The medicine inlet of the wastewater reaction tank is opened and closed by the baffle plate to prevent the wastewater medicine inside the wastewater reaction tank from mixing with the wastewater and causing a violent reaction that splashes the wastewater into the medicine dispensing tank.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are: This invention utilizes a combination of a reagent dispensing mechanism, a transmission mechanism, a reagent dispensing tank, a servo motor, a first bevel gear, a second bevel gear, an eccentric wheel, and a partition plate. By using the partition plate, the wastewater reagents inside the reagent dispensing tank are intermittently dispensed, avoiding localized high-concentration accumulation of reagents. This allows key reagents such as chelating agents and flocculants to be fully mixed with the wastewater in small, frequent batches. This not only prevents side reactions that can easily occur in areas of high local concentration but also improves the utilization rate of the reagents and reduces treatment costs. This invention utilizes a combination of a reagent dispensing box, sliding plates, limiting posts, and partitions to move two sliding plates to the sides of the main and auxiliary dispensing ports of the reagent dispensing box, allowing different reagents to be dispensed into the box. The dispensing rhythm of the main and auxiliary ports can be independently controlled, and the diverse wastewater treatment needs of pharmaceutical laboratories can be met without replacing the equipment. This invention utilizes a combination of a drug delivery box, a sliding plate, a limiting column, and a partition plate to allow the drug from the secondary delivery port to flow into the storage tank of the partition plate. The drug is then premixed with the drug from the main delivery port in the storage tank before being uniformly delivered into the wastewater reaction tank. This eliminates the need for an additional independent mixing device, reducing equipment footprint and energy consumption, while also avoiding the cleaning and maintenance costs of the mixing device. This invention utilizes a combination of a servo motor, a transmission rod, a first bevel gear, a second bevel gear, a fourth bevel gear, and a stirring fan blade to simultaneously stir the mixture during intermittent dosing. This allows the reagent to be quickly dispersed by the stirring fan blade as soon as it enters the wastewater, preventing the reagent from accumulating near the dosing point and forming a high-concentration area. This fundamentally reduces side reactions caused by excessively high local concentrations and lowers the risk to the effluent environment. This invention utilizes a combination of a transmission rod, stirring blades, a lifting rod, a third bevel gear, a worm gear, a worm wheel, a lifting wheel, and a connecting plate to enable the stirring blades to rotate while simultaneously moving up and down inside the wastewater reaction tank. When the stirring blades descend, they can disturb the sediment at the bottom of the tank, and when they rise, they can break up the floating oil on the surface, ensuring that the chemicals can accurately act on pollutants in different layers, thereby further improving the reaction speed between wastewater and wastewater chemicals. This invention uses a barrier plate to open and close the inlet of the wastewater reaction tank. The inlet is opened when the reagent is added to ensure that the reagent enters the reaction tank smoothly. The inlet is closed during the interval between reagent additions or when the reaction is intense, forming a physical barrier to block the reverse splashing path of wastewater, effectively blocking splashed wastewater and preventing it from contacting operators or equipment circuits, thus reducing the risk of chemical burns. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drug delivery mechanism of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing frame of the present invention; Figure 4 This is a schematic diagram of the structure of the skateboard of the present invention; Figure 5 This is a schematic diagram of the structure of the drug dispensing box of the present invention; Figure 6 This is a schematic diagram of the eccentric wheel of the present invention; Figure 7 This is a schematic diagram of the structure of the partition plate of the present invention; Figure 8 This is a schematic diagram of the lifting rod of the present invention; Figure 9 This is a schematic diagram of the connecting plate of the present invention; Figure 10 For the present invention Figure 9 A magnified schematic diagram of the partial structure at point A in the middle; Figure 11 This is a schematic diagram of the collar structure of the present invention.

[0015] The components include: 1. Wastewater reaction tank; 2. Inlet pipe; 3. Outlet pipe; 4. Chemical dispensing mechanism; 401. Fixing frame; 402. Chemical dispensing box; 403. Servo motor; 404. Transmission rod; 405. Stirring fan blade; 406. Lifting rod; 407. First bevel gear; 408. Second bevel gear; 409. Third bevel gear; 410. Fourth bevel gear; 411. Worm gear; 412. Worm wheel; 413. Eccentric wheel; 414. Divider plate; 415. Barrier plate; 416. Slide plate; 417. U-shaped rod; 418. Lifting wheel; 419. Connecting plate; 420. Spring; 421. Positioning ring; 422. Collar; 423. Limiting post. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0017] Example: The present invention provides, as follows Figure 1 and Figure 2 The wastewater treatment device for a pharmaceutical laboratory shown includes a wastewater reaction tank 1. An inlet pipe 2 for adding wastewater into the wastewater reaction tank 1 is provided on the side of the wastewater reaction tank 1. An outlet pipe 3 for discharging wastewater from the inside of the wastewater reaction tank 1 is also provided below the inlet pipe 2.

[0018] As can be seen from the above, when it is necessary to treat sewage, the sewage to be treated is transported into the sewage reaction tank 1 through the inlet pipe 2, and sewage treatment agent is added into the sewage reaction tank 1 so that the sewage and sewage treatment agent react in the sewage reaction tank 1. The sewage treatment agent after reaction is discharged from the sewage reaction tank 1 through the outlet pipe 3 and enters the next process.

[0019] refer to Figure 3 , Figure 4 , Figure 5As shown, the top of the wastewater reaction tank 1 is provided with a chemical dispensing mechanism 4 for dispensing wastewater chemicals. The chemical dispensing mechanism 4 includes a fixed frame 401 fixed to the top of the wastewater reaction tank 1. The outer side of the fixed frame 401 is provided with a chemical dispensing box 402 for intermittently dispensing wastewater chemicals. An eccentric wheel 413 is rotatably installed inside the chemical dispensing box 402. A stirring fan blade 405 for stirring wastewater is provided below the fixed frame 401. A lifting rod 406 for driving the stirring fan blade 405 to rise and fall is provided on the side of the fixed frame 401 away from the chemical dispensing box 402. A transmission mechanism for driving the eccentric wheel 413 to rotate is also provided in the middle of the fixed frame 401.

[0020] refer to Figure 5 , Figure 6 , Figure 7 As shown, the transmission mechanism includes a medicine dispensing box 402 fixed to the top of the fixed frame 401. A first bevel gear 407 is fixed to the output shaft of the servo motor 403. A second bevel gear 408 is located at the bottom of the first bevel gear 407. The end of the second bevel gear 408 away from the first bevel gear 407 is fixed to an eccentric wheel 413. Several partition plates 414 are also fixed to the outer wall of the eccentric wheel 413. A main dispensing port and a secondary dispensing port are symmetrically arranged on the top of the medicine dispensing box 402, and a dispensing port for discharging medicine is also provided at the bottom of the medicine dispensing box 402. The first bevel gear 407 meshes with the second bevel gear 408, and the second bevel gear 408 is rotatably mounted in the middle of the fixed frame 401. The eccentric wheel 41... 3. An eccentric setting is provided inside the agent dispensing tank 402. The agent dispensing tank 402 is fixed to the side of the fixing frame 401 near the second bevel gear 408, and the end of the partition plate 414 away from the eccentric wheel 413 is in contact with the inner wall of the agent dispensing tank 402. The output shaft of the servo motor 403 drives the first bevel gear 407 to rotate, the first bevel gear 407 drives the second bevel gear 408 to rotate, and the second bevel gear 408 drives the eccentric wheel 413 to rotate, so that the eccentric wheel 413 rotates eccentrically inside the agent dispensing tank 402. The eccentric wheel 413 drives the partition plate 414 to rotate eccentrically inside the agent dispensing tank 402. Several partition plates 414 are used to separate the sewage agent put into the agent dispensing tank 402.

[0021] refer to Figure 5 , Figure 6 , Figure 7As shown, two sliding plates 416 are movably connected to the outer wall of the reagent dispensing tank 402. A pull rod is fixed between the two sliding plates 416, and several limiting posts 423 are also fixed to the outer wall of the reagent dispensing tank 402 to limit the sliding plates 416. A storage tank for temporarily storing sewage reagents is also opened in the middle of the partition plate 414. The length of both sliding plates 416 is greater than the main dosing port and the auxiliary dosing port. One of the sliding plates 416 blocks the auxiliary dosing port. When multiple different types of reagents need to be dispensed, the pull rod is pulled along the reagent dispensing tank. The outer wall of 402 moves, causing the two slide plates 416 to rotate around the axis of the agent dispensing tank 402. Both slide plates 416 move to the sides of the main dosing port and the auxiliary dosing port, respectively dispensing agents into the agent dispensing tank 402 through the main dosing port and the auxiliary dosing port. It also allows two different agents to flow into the outlet on both sides of the eccentric wheel 413, realizing the simultaneous dispensing of multiple different types of agents. At the same time, the agent in the auxiliary dosing port can be dispensed into the storage tank, so that the two agents can be mixed before being put into the sewage reaction tank 1.

[0022] The output shaft of the servo motor 403 drives the first bevel gear 407 to rotate, the first bevel gear 407 drives the second bevel gear 408 to rotate, and the second bevel gear 408 drives the eccentric wheel 413 to rotate, causing the eccentric wheel 413 to rotate eccentrically inside the medicine dispensing tank 402. The eccentric wheel 413 drives the partition plate 414 to rotate eccentrically inside the medicine dispensing tank 402. Several partition plates 414 are used to separate the wastewater medicine put into the medicine dispensing tank 402. The separated medicine is intermittently dispensed through the medicine outlet. The storage tank can temporarily store the wastewater medicine between two adjacent partition plates 414 to prevent the wastewater medicine inside the partition plate 414 from being too much when the partition plate 414 is separated from the medicine dispensing tank 402, which would block the medicine outlet. Pulling the lever moves it along the outer wall of the drug dispensing box 402, causing the two slide plates 416 to rotate around the axis of the drug dispensing box 402. Both slide plates 416 move to the sides of the main dispensing port and the auxiliary dispensing port, and the drugs are dispensed into the drug dispensing box 402 through the main dispensing port and the auxiliary dispensing port, respectively. It can also allow two different drugs to flow into the dispensing port on both sides of the eccentric wheel 413, so as to realize the simultaneous dispensing of multiple different types of drugs.

[0023] refer to Figure 8 , Figure 9 and Figure 10As shown, a lifting mechanism for driving the lifting rod 406 to rise and fall is also provided between the fixed frame 401 and the lifting rod 406. The lifting mechanism includes a third bevel gear 409 located on the side of the first bevel gear 407 away from the second bevel gear 408. A worm gear 411 is fixed to the end of the third bevel gear 409 away from the fixed frame 401. A worm wheel 412 meshing with the worm gear 411 is provided below the worm gear 411. A U-shaped rod 417 is fixed to the top of the lifting rod 406. Lifting wheels 418 for driving the U-shaped rod 417 to rise and fall are provided on both sides of the worm wheel 412. A connecting plate 419 for driving the stirring fan blade 405 to rise and fall is also fixed to the bottom of the lifting rod 406. The top of the lifting rod 406 extends to the top of the sewage reaction tank 1, and the U-shaped rod 417 is located above the sewage reaction tank 1. The lifting wheels 418 are elliptical. The third bevel gear 409 meshes with the first bevel gear 407, and the third bevel gear 409 is located on the side of the first bevel gear 407 away from the second bevel gear 408. Below the first bevel gear 407, the worm gear 411 is rotatably mounted on the side of the fixed frame 401 away from the second bevel gear 408, and a rotating shaft is fixed in the middle of the worm wheel 412. The lifting wheel 418 is fixed at both ends of the rotating shaft. A mounting bracket is provided between the rotating shaft and the fixed frame 401. The rotating shaft is rotatably mounted on the side of the mounting bracket away from the fixed frame 401, and the mounting bracket is fixed on the side of the fixed frame 401 away from the second bevel gear 408. When the servo motor 403 drives the first bevel gear 407 to rotate, the first bevel gear 407 drives the third bevel gear 409 to rotate. The third bevel gear 409 drives the worm gear 411 to rotate. The worm gear 411 drives the worm wheel 412 that meshes with it to rotate. The worm wheel 412 drives the lifting wheel 418 to rotate through the rotating shaft. The lifting wheel 418 drives the U-shaped rod 417 to rise and fall. The U-shaped rod 417 drives the lifting rod 406 to rise and fall. The lifting rod 406 drives the stirring fan blade 405 to rise and fall through the connecting plate 419.

[0024] refer to Figure 8 , Figure 9 and Figure 10 As shown, the outer wall of the slide plate 416 is also fixed with a main plate and a secondary plate. A spring 420 is also provided between the secondary plate and the sewage reaction tank 1 to drive the lifting rod 406 to quickly reset. The main plate is located above the sewage reaction tank 1. The main plate and the secondary plate are made of corrosion-resistant elastic material. When the worm gear 412 drives the lifting wheel 418 to rotate, the lifting wheel 418 changes from a horizontal state to a vertical state. The lifting wheel 418 drives the U-shaped rod 417 to drive the lifting rod 406 to move upward. The lifting rod 406 drives the secondary plate to move upward. The secondary plate compresses the spring 420. When the lifting wheel 418 changes from a vertical state to a horizontal state, the spring 420 releases the pressure and pushes the secondary plate to move downward quickly. The secondary plate drives the lifting rod 406 to move downward quickly. The lifting rod 406 drives the stirring fan blade 405 to move downward quickly through the connecting plate 419.

[0025] refer to Figure 9 , Figure 10and Figure 11 As shown, a fourth bevel gear 410 is provided below the second bevel gear 408 and the third bevel gear 409. A transmission rod 404 is fixed to the bottom of the fourth bevel gear 410. A collar 422 is also sleeved on the outside of the transmission rod 404. The bottom of the collar 422 is fixed to the top of the stirring blade 405. The end of the connecting plate 419 away from the lifting rod 406 is rotatably connected to the collar 422. The fourth bevel gear 410 meshes with the second bevel gear 408 and the third bevel gear 409. The transmission rod 404 is located inside the wastewater reaction tank 1. A retaining ring is also fixed to the outside of the 10. The fourth bevel gear 410 is rotatably installed inside the fixed frame 401 through the retaining ring, and the stirring blade 405 is set inside the sewage reaction tank 1. When the second bevel gear 408 and the third bevel gear 409 rotate, the second bevel gear 408 and the third bevel gear 409 drive the fourth bevel gear 410 to rotate. The fourth bevel gear 410 drives the transmission rod 404 to rotate. The transmission rod 404 drives the stirring blade 405 to rotate. The stirring blade 405 stirs and mixes the sewage and sewage reagent inside the sewage reaction tank 1.

[0026] refer to Figure 9 , Figure 10 and Figure 11 As shown, a limiting block is fixed to the outer wall of the transmission rod 404. The middle of the collar 422 and the stirring blade 405 are provided with through grooves that are compatible with the transmission rod 404, and the inner wall of the through groove is also provided with a limiting groove that is compatible with the limiting block. A positioning ring 421 is also fixed to the outer wall of the collar 422. The end of the connecting plate 419 away from the lifting rod 406 is provided with a positioning groove that is compatible with the positioning ring 421. When the transmission rod 404 rotates, the transmission rod 404 drives the collar 422 and the stirring blade 405 to rotate through the cooperation of the limiting block and the limiting groove. Through the cooperation of the positioning ring 421 and the positioning groove, the collar 422 rotates around the axis of the transmission rod 404. With the cooperation of the positioning ring 421 and the positioning groove, the stirring blade 405 can rise and fall along the outer wall of the transmission rod 404 while rotating.

[0027] refer to Figure 9 , Figure 10 and Figure 11 As shown, the top of the wastewater reaction tank 1 is also provided with a medicine inlet, and a baffle plate 415 for opening and closing the medicine inlet is inserted at the end of the wastewater reaction tank 1 away from the lifting rod 406. A handle is also fixed on the side of the baffle plate 415 away from the wastewater reaction tank 1. The medicine inlet of the wastewater reaction tank 1 is opened and closed by the baffle plate 415 to prevent the wastewater medicine inside the wastewater reaction tank 1 from mixing with the wastewater and causing a violent reaction that splashes the wastewater into the medicine dispensing tank 402.

[0028] When the wastewater treatment agent is added, the first bevel gear 407 drives the third bevel gear 409 to rotate, the third bevel gear 409 drives the worm gear 411 to rotate, the worm gear 411 drives the worm wheel 412 meshing with it to rotate, the worm wheel 412 drives the lifting wheel 418 to rotate through the rotating shaft, the lifting wheel 418 drives the U-shaped rod 417 to rise and fall, the U-shaped rod 417 drives the lifting rod 406 to rise and fall, the lifting rod 406 drives the connecting plate 419 to rise and fall, the connecting plate 419 drives the collar 422 to rise and fall through the positioning ring 421, the collar 422 drives the stirring blade 405 to rise and fall along the outer wall of the transmission rod 404. At the same time, the second bevel gear 408 and the third bevel gear 409 drive the fourth bevel gear 410 to rotate, the fourth bevel gear 410 drives the transmission rod 404 to rotate, and the transmission rod 404 drives the collar 422 and the stirring blade 405 to rotate through the cooperation of the limiting block and the limiting groove, so that the transmission rod 404 can fully mix the wastewater and the wastewater treatment agent.

[0029] Working principle: The output shaft of the servo motor 403 drives the first bevel gear 407 to rotate, the first bevel gear 407 drives the second bevel gear 408 to rotate, and the second bevel gear 408 drives the eccentric wheel 413 to rotate, causing the eccentric wheel 413 to rotate eccentrically inside the medicine dispensing tank 402. The eccentric wheel 413 drives the partition plate 414 to rotate eccentrically inside the medicine dispensing tank 402. Several partition plates 414 are used to separate the wastewater medicine put into the medicine dispensing tank 402. The separated medicine is intermittently dispensed through the medicine outlet. The storage tank can temporarily store the wastewater medicine between two adjacent partition plates 414 to prevent the wastewater medicine inside the partition plate 414 from being too much when the partition plate 414 is separated from the medicine dispensing tank 402, which would block the medicine outlet. When the wastewater treatment agent is added, the first bevel gear 407 drives the third bevel gear 409 to rotate, the third bevel gear 409 drives the worm gear 411 to rotate, the worm gear 411 drives the worm wheel 412 meshing with it to rotate, the worm wheel 412 drives the lifting wheel 418 to rotate through the rotating shaft, the lifting wheel 418 drives the U-shaped rod 417 to rise and fall, the U-shaped rod 417 drives the lifting rod 406 to rise and fall, the lifting rod 406 drives the connecting plate 419 to rise and fall, the connecting plate 419 drives the collar 422 to rise and fall through the positioning ring 421, the collar 422 drives the stirring blade 405 to rise and fall along the outer wall of the transmission rod 404. At the same time, the second bevel gear 408 and the third bevel gear 409 drive the fourth bevel gear 410 to rotate, the fourth bevel gear 410 drives the transmission rod 404 to rotate, and the transmission rod 404 drives the collar 422 and the stirring blade 405 to rotate through the cooperation of the limiting block and the limiting groove, so that the transmission rod 404 can fully mix the wastewater and the wastewater treatment agent. Pulling the lever moves it along the outer wall of the drug dispensing box 402, causing the two slide plates 416 to rotate around the axis of the drug dispensing box 402. Both slide plates 416 move to the sides of the main dispensing port and the auxiliary dispensing port, and the drugs are dispensed into the drug dispensing box 402 through the main dispensing port and the auxiliary dispensing port, respectively. It can also allow two different drugs to flow into the dispensing port on both sides of the eccentric wheel 413, so as to realize the simultaneous dispensing of multiple different types of drugs.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wastewater treatment device for a pharmaceutical laboratory, comprising a wastewater reaction tank, wherein an inlet pipe for adding wastewater into the wastewater reaction tank is provided on the side of the wastewater reaction tank, and an outlet pipe for discharging wastewater from the inside of the wastewater reaction tank is provided below the inlet pipe, characterized in that, The wastewater reaction tank is equipped with a chemical dosing mechanism at its top for dispensing wastewater chemicals. The chemical dosing mechanism includes a fixed frame on the top of the wastewater reaction tank, a chemical dosing box for intermittently dispensing wastewater chemicals on the outer side of the fixed frame, an eccentric wheel rotatably mounted inside the chemical dosing box, a stirring fan blade for stirring the wastewater below the fixed frame, a lifting rod for raising and lowering the stirring fan blade on the side of the fixed frame away from the chemical dosing box, a transmission mechanism for rotating the eccentric wheel in the middle of the fixed frame, and a lifting mechanism for raising and lowering the lifting rod between the fixed frame and the lifting rod.

2. The pharmaceutical laboratory wastewater treatment device according to claim 1, characterized in that, The transmission mechanism includes a medicine dispensing box fixed to the top of the fixed frame, a first bevel gear fixed to the output shaft of the servo motor, a second bevel gear set at the bottom of the first bevel gear, the end of the second bevel gear away from the first bevel gear fixed to an eccentric wheel, and several partition plates fixed to the outer wall of the eccentric wheel. The top of the medicine dispensing box is symmetrically provided with a main dispensing port and a secondary dispensing port, and the bottom of the medicine dispensing box is also provided with a dispensing port for discharging medicine.

3. The pharmaceutical laboratory wastewater treatment device according to claim 2, characterized in that, The outer wall of the drug dispensing box is movably connected to two sliding plates, and a pull rod is fixed between the two sliding plates. The outer wall of the drug dispensing box is also fixed with several limiting posts to limit the sliding plates. A storage tank for temporarily storing wastewater drugs is also opened in the middle of the partition plate.

4. A pharmaceutical laboratory wastewater treatment device according to claim 2, characterized in that, The lifting mechanism includes a third bevel gear located on the side of the first bevel gear away from the second bevel gear. A worm gear is fixed to the end of the third bevel gear away from the fixed frame. A worm wheel meshing with the worm gear is located below the worm gear. A U-shaped rod is fixed to the top of the lifting rod. Lifting wheels that drive the U-shaped rod to move up and down are provided on both sides of the worm wheel. A connecting plate that drives the stirring fan blades to move up and down is also fixed to the bottom of the lifting rod.

5. A pharmaceutical laboratory wastewater treatment device according to claim 3, characterized in that, The outer wall of the slide plate is also fixed with a main plate and a secondary plate, and a spring is provided between the secondary plate and the sewage reaction tank to drive the lifting rod to quickly reset.

6. A pharmaceutical laboratory wastewater treatment device according to claim 2, characterized in that, A fourth bevel gear is provided below the second and third bevel gears. A transmission rod is fixed to the bottom of the fourth bevel gear, and a collar is fitted around the outside of the transmission rod. The bottom of the collar is fixed to the top of the stirring blade, and the end of the connecting plate away from the lifting rod is rotatably connected to the collar.

7. A pharmaceutical laboratory wastewater treatment device according to claim 6, characterized in that, The outer wall of the transmission rod is also fixed with a limiting block. The middle part of the collar and the stirring fan blade are both provided with a through groove that matches the transmission rod. The inner wall of the through groove is also provided with a limiting groove that matches the limiting block. The outer wall of the collar is also fixed with a positioning ring. The end of the connecting plate away from the lifting rod is provided with a positioning groove that matches the positioning ring.

8. A pharmaceutical laboratory wastewater treatment device according to claim 7, characterized in that, The wastewater reaction tank is also provided with a medicine inlet at the top, and a baffle plate for opening and closing the medicine inlet is inserted at the end of the wastewater reaction tank away from the lifting rod.

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