Biological treatment device for polyether polyol production wastewater

Abstract

The invention discloses a polyether polyol production wastewater biological treatment device, and relates to the technical field of wastewater biological treatment.The discharging device further comprises a protruding block and an elastic telescopic column, the protruding block is fixedly installed on the inner wall, away from a gear, of a fixed circle, and the fixed end of the elastic telescopic column is fixedly installed at the top of a bottom column; when the two-way pipe rotates, the medicine boxes at the top of the sealing box can be equivalently transported, the amount of medicine falling to the top of the sealing box is fixed every time, the two-way pipe makes contact with the protruding block when rotating, and the two-way pipe vibrates when making contact with the protruding block.

Description

Technical Field

[0001] This invention belongs to the field of biological wastewater treatment, specifically relating to a biological treatment device for wastewater from the production of polyether polyols. Background Technology

[0002] The biological treatment device for wastewater from polyether polyol production is an intelligent pretreatment unit or supporting device for reagent dosing, mixing and stirring, and automatic cleaning of impurities. It aims to automate multiple operation steps to improve efficiency, ensure accuracy, and reduce the intensity of manual operation.

[0003] The patent with publication number CN201062218Y relates to an equalization tank, a wastewater treatment tank, an inclined tube sedimentation device, and a disinfection device, all connected to a wastewater inlet pipe. The equalization tank is equipped with a level controller, and the high-efficiency organic wastewater biological treatment device is equipped with a power pump and a dosing device controlled by the measurement signal of the level measuring device. The inlet of the power pump is connected to the equalization tank, and the outlet is connected to the wastewater treatment tank. The dosing device is connected to the disinfection device. This patent can automatically control the power pump and the dosing device to operate automatically, occupies little space, and saves energy. This patent can be widely used in wastewater treatment.

[0004] In the aforementioned patent, the automatic control power pump and dosing device operate automatically, occupy little space, and save energy. This patent can be widely used in sewage treatment. However, there are still problems. When adding chemicals, it is not possible to actively increase or decrease the amount of chemicals based on the content of the wastewater. At the same time, it is difficult to ensure that internal impurities can be quickly and safely removed during stirring. Summary of the Invention

[0005] The purpose of this invention is to provide a biological treatment device for wastewater from polyether polyol production, in order to solve the problem of the inability to quickly mix wastewater with an equal amount of reagent.

[0006] To achieve the above objectives, the present invention provides a biological treatment device for wastewater from polyether polyol production, including a tank and a motor, and a discharge device for rapidly mixing the required proportions, including the discharge device, which further includes; A sealed box is fixedly installed on the top of the tank. A sliding rod slides through the top of the sealed box, and a buoyancy ball is fixedly installed at the bottom of the sliding rod. The buoyancy ball is used to detect the content of wastewater inside the tank. A fixed circle is fixedly installed on the inner wall of the sealed box. A gear is rotatably inserted through the side of the fixed circle near the slide rod, and a bidirectional tube is fixedly installed on the side of the gear away from the slide rod. The bidirectional tube is used to rapidly release a specific drug. A fixed block is fixedly installed on the top of the tank. A rotating column passes through the top of the fixed block and is fixedly connected to the output end of the motor. A bottom column passes through the top of the tank. The rotating column is used to separate the motor from the bottom column for easy maintenance. When the wastewater content inside the tank rises, it will push the buoyancy ball upward. When the buoyancy ball moves upward, it will drive the sliding rod to move. When the sliding rod moves, it will drive the gear on the fixed circle to rotate.

[0007] In one or more embodiments of the present invention, the feeding device further includes a protrusion and an elastic telescopic column. The protrusion is fixedly installed on the inner wall of the fixed circle away from the gear. The fixed end of the elastic telescopic column is fixedly installed on the top of the bottom column. When the bidirectional tube rotates, it will transport the medicine box at the top of the sealed box in an equal amount, so that the amount of medicine falling into the box each time is quantitative. When the bidirectional tube rotates, it will contact the protrusion. When the bidirectional tube contacts the protrusion, it will cause the bidirectional tube to vibrate.

[0008] In one or more embodiments of the present invention, the free end of the elastic telescopic column is in contact with the rotating column, the bidirectional tube is in contact with the protrusion, the slide rod is rotatably mounted with a toothed block on the side near the gear, the slide rod meshes with the gear, and a medicine box is provided on the top of the sealing box. The machine tank is equipped with a cleaning device inside to quickly remove impurities formed after the agent combines with the contents, and a prevention device on the top of the machine tank to press down the agent and prevent agitation without agent. When the bidirectional tube vibrates, the agent inside the bidirectional tube will not become stuck or hollow. After the wastewater is filled, the operator starts the motor, which drives the rotating column on the top of the fixed block to rotate.

[0009] In one or more embodiments of the present invention, the cleaning device includes a ring, a connecting plate, a screen frame, a slider, a connecting rod, a sliding plate, a scraper, and a baffle. A reciprocating spiral groove is formed on the circumferential surface of the bottom column. The ring is slidably mounted on the reciprocating spiral groove. One end of the connecting plate is fixedly mounted on the circumferential surface of the ring, and the other end of the connecting plate is slidably connected to the inner wall of the tank. The screen frame is fixedly mounted on the bottom circumferential surface of the bottom column. One end of the slider is slidably mounted on the bottom of the ring. One end of the connecting rod is rotatably mounted on the other end of the slider. The sliding plate is rotatably mounted on the other end of the connecting rod and slidably mounted inside the screen frame. The scraper is rotatably mounted on the side of the sliding plate near the screen frame. The baffle is fixedly mounted on the side of the scraper near the bottom column. When the stirring of the wastewater is stopped and the water is discharged, the buoyancy ball will move downward. At the same time, since the toothed plate of the buoyancy ball is rotatably connected to the buoyancy ball, the downward movement of the buoyancy ball will not drive the gear to rotate. However, when the buoyancy ball moves downward, it will drive the soft rod to move.

[0010] In one or more embodiments of the present invention, the cleaning device further includes a collection pipe, a bottom plate, a bottom block, and a flexible rod. The collection pipe is fixedly installed on the side of the screen frame away from the bottom column. The bottom plate is slidably installed on the bottom of the collection pipe. The bottom block is slidably installed on the bottom of the tank. A rotating plate is rotatably installed on the top of the bottom block. The flexible rod is fixedly installed on the bottom of the buoyancy ball. When the ring moves upward, it causes the scraper to rotate towards the collection pipe. However, when the ring moves downward, it causes the scraper to rotate towards the bottom column. But due to the obstruction of the baffle, the scraper cannot rotate.

[0011] In one or more embodiments of the present invention, the flexible rod contacts the screen frame, the rotating plate at the top of the bottom block contacts the bottom plate, the scraper contacts the baffle, and a spring door is slidably installed on the side of the collecting pipe near the screen frame. The rotating plate at the top of the bottom block is rotatably installed so it will not affect the bottom plate. When the flexible rod blocks the screen frame in a suitable position, the rotating plate at the top of the bottom block will be vertical at the bottom of the bottom plate. At this time, the worker pushes the bottom block inward.

[0012] In one or more embodiments of the present invention, the prevention device includes an elastic telescopic rod, a right-angle plate, a pressure plate, an elastic telescopic contact plate, a vertical plate, a trapezoidal block, and a limiting plate. The fixed end of the elastic telescopic rod is fixedly installed on the top of the connecting plate. One end of the right-angle plate is fixedly installed on the free end of the elastic telescopic rod. The pressure plate is fixedly installed on the other end of the right-angle plate and is slidably connected to the medicine box. The fixed end of the elastic telescopic contact plate is fixedly installed on the top of the machine tank. One end of the vertical plate is fixedly installed on the top of the free end of the elastic telescopic contact plate. The limiting plate is slidably installed on the top of the machine tank. The trapezoidal block is fixedly installed on the top of the end of the limiting plate away from the rotating column. When the right-angle plate moves downward, it contacts the vertical plate on the free end of the elastic telescopic contact plate. When the right-angle plate contacts the vertical plate, it causes the vertical plate to move downward. When the vertical plate moves downward, it contacts the trapezoidal block.

[0013] In one or more embodiments of the present invention, the vertical plate is in contact with the trapezoidal block, the limiting plate is in contact with the elastic telescopic column, and the right-angle plate is in contact with the elastic telescopic contact plate. When the limiting plate moves, it will release the restriction on the free end of the elastic telescopic column. After the restriction on the free end of the elastic telescopic column is released, the free end of the elastic telescopic column will move downward.

[0014] Compared with the prior art, the beneficial effects of the present invention are that vibration can effectively break the adhesion and bridging between drug particles or between the drug and the pipe wall, preventing the drug from being blocked or stuck inside the bidirectional tube, ensuring the continuity and smoothness of the delivery process. Vibration can make the drug fill the tube more densely, expel air, and avoid the formation of "voids" or "semi-empty" states in the pipeline during the delivery process. This ensures that the dosage of drug delivered by the rotation of the bidirectional tube is full, stable and predictable each time, thereby achieving precise quantitative dosing.

[0015] This device cleverly uses existing mechanical movements such as the descent of the buoyant ball and the rotation of the bottom column to drive the scraper, automatically scraping away solid impurities intercepted on the screen frame. The spring door design pushes these impurities into the collection pipe. The entire process does not require manual cleaning of the screen. When the water level drops, the soft rod positions the screen frame, and the rotating plate on the bottom block turns to a vertical position, forming a temporary baffle. The staff only needs to push the bottom block inward from the outside of the equipment to open the bottom of the collection pipe, allowing the accumulated impurities to be discharged quickly and centrally under the action of gravity.

[0016] This device automatically triggers and cuts off the power transmission of the stirring device when the reagent in the reagent box is completely depleted. This effectively prevents the equipment from continuing to "stir without adding reagent," avoiding the waste of electrical energy and meaningless equipment operation time, and improving energy efficiency and operating economy. As long as stirring is in progress, it means that the pressure plate is squeezing and supplying reagent, preventing the ineffective or unqualified treatment state of stirring without adding reagent, and ensuring the reliability and stability of the biological treatment process. Attached Figure Description

[0017] Figure 1 This is an overall view of the tank in one embodiment of the present invention; Figure 2 This is a detailed view of the sealing box and the buoyancy ball in one embodiment of the present invention; Figure 3 This is a detailed view of the slide bar and the fixed circle in one embodiment of the present invention; Figure 4 This is a detailed view of the fixed circle and the bidirectional tube in one embodiment of the present invention; Figure 5 This is a detailed view of the connecting plate and the elastic telescopic rod in one embodiment of the present invention; Figure 6 As shown in one embodiment of the present invention Figure 5 Enlarged view of A in the middle; Figure 7 This is a detailed view of the baffle and the base plate in one embodiment of the present invention; Figure 8 This is a detailed view of the sealing box and the elastic telescopic rod in one embodiment of the present invention; Figure 9This is a detailed view of the elastic telescopic contact plate and the limiting plate in one embodiment of the present invention.

[0018] Explanation of key figure labels: 1. Machine tank; 201. Sealed box; 202. Slide bar; 203. Buoyancy ball; 205. Fixed circle; 206. Gear; 207. Two-way tube; 208. Protrusion; 210. Fixed block; 211. Rotating column; 212. Bottom column; 213. Elastic telescopic column; 301. Ring; 302. Connecting plate; 303. Screen frame; 304. Sliding block; 305. Connecting rod; 306. Slide plate; 307. Scraper; 308. Baffle; 309. Collection pipe; 310. Bottom plate; 311. Bottom block; 312. Flexible rod; 401. Elastic telescopic rod; 402. Right angle plate; 403. Pressure plate; 404. Elastic telescopic contact plate; 405. Vertical plate; 406. Trapezoidal block; 407. Limiting plate. Detailed Implementation

[0019] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0020] like Figures 1-9 As shown, one embodiment of the present invention is: a biological treatment device for wastewater from polyether polyol production, including a tank 1 and a motor, and a discharge device for rapidly mixing the required proportions, including a discharge device, the discharge device further including; A sealing box 201 is fixedly installed on the top of the tank 1. A sliding rod 202 slides through the top of the sealing box 201. A buoyancy ball 203 is fixedly installed at the bottom of the sliding rod 202. The buoyancy ball 203 is used to detect the content of wastewater inside the tank 1. A fixed circle 205 is fixedly installed on the inner wall of the sealed box 201. A gear 206 is rotatably inserted through the side of the fixed circle 205 near the slide bar 202. A bidirectional tube 207 is fixedly installed on the side of the gear 206 away from the slide bar 202. The bidirectional tube 207 is used to rapidly release a specific drug. A fixing block 210 is fixedly installed on the top of the machine tank 1. A rotating column 211 is rotatably inserted through the top of the fixing block 210. The top of the rotating column 211 is fixedly connected to the output end of the motor. A bottom column 212 is rotatably inserted through the top of the machine tank 1. The rotating column 211 is used to separate the motor from the bottom column 212 for easy subsequent maintenance. Vibration can make the medicine fill the tube more densely, expel air, and avoid the formation of "voids" or "half-empty" states in the pipeline during transportation. This ensures that the dosage of medicine transported by the rotation of the bidirectional tube 207 is full, stable, and predictable, thereby achieving precise quantitative dosing.

[0021] The feeding device also includes a protrusion 208 and an elastic telescopic column 213. The protrusion 208 is fixedly installed on the inner wall of the fixed circle 205 away from the gear 206. The fixed end of the elastic telescopic column 213 is fixedly installed on the top of the bottom column 212. When the bidirectional tube 207 rotates, it will transport the medicine box on the top of the sealing box 201 in an equal amount, so that the amount of medicine falling each time is quantitative. When the bidirectional tube 207 rotates, it will contact the protrusion 208. When the bidirectional tube 207 contacts the protrusion 208, it will cause the bidirectional tube 207 to vibrate.

[0022] The free end of the elastic telescopic column 213 contacts the rotating column 211, the bidirectional tube 207 contacts the protrusion 208, the slide rod 202 has a toothed block rotatably installed on the side near the gear 206, the slide rod 202 meshes with the gear 206, and the top of the sealing box 201 is provided with a medicine box. When the bidirectional tube 207 vibrates, the medicine inside the bidirectional tube 207 will not be stuck in the hollow inside. After the wastewater filling is completed, the staff starts the motor. When the motor starts, it will drive the rotating column 211 on the top of the fixed block 210 to rotate.

[0023] In this embodiment, during operation: the operator fills the medicine box at the top of the sealed box 201 with medicine. After the medicine is filled, wastewater is poured into the machine tank 1. When the wastewater content inside the machine tank 1 rises, it will push the buoyancy ball 203 upward. When the buoyancy ball 203 moves upward, it will drive the slide bar 202 to move. When the slide bar 202 moves, it will drive the gear 206 on the fixed circle 205 to rotate. When gear 206 rotates, it drives bidirectional tube 207 to rotate. When bidirectional tube 207 rotates, it transports the medicine box on top of sealed box 201 in an equal amount, so that the amount of medicine dropped each time is fixed. When bidirectional tube 207 rotates, it contacts protrusion 208. When bidirectional tube 207 contacts protrusion 208, it causes bidirectional tube 207 to vibrate. When bidirectional tube 207 vibrates, it prevents the medicine inside bidirectional tube 207 from getting stuck in the hollow inside. After the wastewater filling is completed, the staff starts the motor. When the motor starts, it will drive the rotating column 211 on the top of the fixed block 210 to rotate. When the rotating column 211 rotates, it will drive the elastic telescopic column 213 to rotate. When the elastic telescopic column 213 rotates, it will drive the bottom column 212 to rotate.

[0024] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the interior of the machine tank 1 is provided with a cleaning device for quickly cleaning impurities formed after the internal components combine with the pharmaceutical agent, and the top of the machine tank 1 is provided with a prevention device for pressing down the pharmaceutical agent and preventing agitation without the pharmaceutical agent. The cleaning device includes a ring 301, a connecting plate 302, a sieve frame 303, a slider 304, a connecting rod 305, a sliding plate 306, a scraper 307, and a baffle 308. A reciprocating spiral groove is formed on the circumferential surface of the bottom column 212. The ring 301 is slidably mounted on the reciprocating spiral groove. One end of the connecting plate 302 is fixedly mounted on the circumferential surface of the ring 301, and the other end of the connecting plate 302 is slidably connected to the inner wall of the machine tank 1. The sieve frame 303 is fixedly mounted on the bottom column 212. On the bottom circumferential surface, one end of the slider 304 is slidably mounted on the bottom of the ring 301, one end of the connecting rod 305 is rotatably mounted on the other end of the slider 304, the slide plate 306 is rotatably mounted on the other end of the connecting rod 305, the slide plate 306 is slidably mounted inside the screen frame 303, the scraper 307 is rotatably mounted on the side of the slide plate 306 near the screen frame 303, and the baffle 308 is fixedly mounted on the side of the scraper 307 near the bottom column 212. After the flexible rod 312 positions the screen frame 303, the rotating plate on the bottom block 311 will turn to a vertical state, forming a temporary baffle 308. The operator only needs to push the bottom block 311 inward from the outside of the equipment to open the bottom of the collection pipe 309, allowing the accumulated impurities to be discharged quickly and centrally under the action of gravity.

[0025] The cleaning device also includes a collection pipe 309, a bottom plate 310, a bottom block 311, and a flexible rod 312. The collection pipe 309 is fixedly installed on the side of the screen frame 303 away from the bottom column 212. The bottom plate 310 is slidably installed on the bottom of the collection pipe 309. The bottom block 311 is slidably installed on the bottom of the tank 1. A rotating plate is rotatably installed on the top of the bottom block 311. The flexible rod 312 is fixedly installed on the bottom of the buoyancy ball 203. When the ring 301 moves upward, it will cause the scraper 307 to rotate towards the collection pipe 309. However, when the ring 301 moves downward, it will cause the scraper 307 to rotate towards the bottom column 212. However, due to the obstruction of the baffle 308, the scraper 307 cannot rotate.

[0026] The flexible rod 312 contacts the screen frame 303, the rotating plate on the top of the bottom block 311 contacts the bottom plate 310, the scraper 307 contacts the baffle 308, and the collecting pipe 309 has a spring door slidably installed on the side near the screen frame 303. The rotating plate on the top of the bottom block 311 is rotatably installed so it will not affect the bottom plate 310. When the flexible rod 312 blocks the screen frame 303 in a suitable position, the rotating plate on the top of the bottom block 311 will be vertical at the bottom of the bottom plate 310. At this time, the worker pushes the bottom block 311 inward.

[0027] The preventive device includes an elastic telescopic rod 401, a right-angle plate 402, a pressure plate 403, an elastic telescopic contact plate 404, a vertical plate 405, a trapezoidal block 406, and a limiting plate 407. The fixed end of the elastic telescopic rod 401 is fixedly installed on the top of the connecting plate 302. One end of the right-angle plate 402 is fixedly installed on the free end of the elastic telescopic rod 401. The pressure plate 403 is fixedly installed on the other end of the right-angle plate 402 and is slidably connected to the medicine box. The fixed end of the elastic telescopic contact plate 404 is fixedly installed on the top of the tank 1. The vertical plate 405, trapezoidal block 406, and limiting plate 407 are also present. One end of plate 405 is fixedly installed on the top of the free end of elastic telescopic contact plate 404, limit plate 407 is slidably installed on the top of tank 1, and trapezoidal block 406 is fixedly installed on the top of the end of limit plate 407 away from rotating column 211. This avoids the waste of electrical energy and meaningless equipment running time, improves energy efficiency and operating economy. When the agent is exhausted, the mechanical signal will eventually stop the stirring through a chain reaction, preventing the ineffective or unqualified treatment state of stirring without adding medicine, and ensuring the reliability and stability of the biological treatment process.

[0028] The vertical plate 405 contacts the trapezoidal block 406, the limiting plate 407 contacts the elastic telescopic column 213, and the right-angle plate 402 contacts the elastic telescopic contact plate 404. When the limiting plate 407 moves, it will release the limitation on the free end of the elastic telescopic column 213. After the limitation on the free end of the elastic telescopic column 213 is released, the free end of the elastic telescopic column 213 will move downward.

[0029] In this embodiment, when the bottom column 212 rotates, it will drive the screen frame 303 to rotate. When the stirring of wastewater stops and the water is discharged, the buoyancy ball 203 will move downward. At the same time, since the toothed plate of the buoyancy ball 203 is rotatably connected to the buoyancy ball 203, the downward movement of the buoyancy ball 203 will not drive the gear 206 to rotate. At the same time, when the buoyancy ball 203 moves downward, it will drive the flexible rod 312 to move. When the flexible rod 312 moves downward, it will contact the screen frame 303, so that the screen frame 303 can stay in a suitable position. When the bottom column 212 rotates, the ring 301 on the connecting plate 302 moves up and down. When the ring 301 moves, it drives the slider 304 to move. When the slider 304 moves, it drives the connecting rod 305 to move. When the connecting rod 305 moves, it drives the slide plate 306 to move. When the slide plate 306 moves, it drives the scraper 307 to move. When the ring 301 moves upward, it causes the scraper 307 to rotate towards the collection pipe 309. However, when the ring 301 moves downward, it causes the scraper 307 to rotate towards the bottom column 212. However, due to the obstruction of the baffle 308, the scraper 307 cannot rotate. At this time, the scraper 307 will scrape off the impurities on the screen frame 303. When the scraper 307 moves to the direction of the collection pipe 309, the spring door of the collection pipe 309 will be squeezed open, allowing the impurities scraped between the scraper 307 and the collection pipe 309 to enter the interior of the collection pipe 309. At the same time, when the screen frame 303 rotates, the bottom plate 310 will contact the bottom block 311. However, since the rotating plate on the top of the bottom block 311 is rotatably installed, it will not affect the bottom plate 310. When the flexible rod 312 blocks the screen frame 303 in a suitable position, the rotating plate on the top of the bottom block 311 will be vertical at the bottom of the bottom plate 310. At this time, the operator pushes the bottom block 311 inward. When the bottom block 311 is pushed, the impurities inside the collection pipe 309 will fall to the bottom for quick cleaning.

[0030] When the connecting plate 302 moves, it will drive the elastic telescopic rod 401 to move. When the elastic telescopic rod 401 moves, it will drive the right-angle plate 402 to move. When the right-angle plate 402 moves, it will drive the pressure plate 403 inside the medicine box to move. When the pressure plate 403 moves, it will squeeze the medicine inside the medicine box towards the bidirectional tube 207. Combined with the vibration of the bidirectional tube 207, it will prevent the medicine inside the bidirectional tube 207 from being in short supply. When the amount of medicine inside the medicine box decreases to zero, the right-angle plate 402 will move downward. When the right-angle plate 402 moves downward, it will contact the vertical plate 405 on the free end of the elastic telescopic contact plate 404. When the right-angle plate 402 contacts the vertical plate 405, it will cause the vertical plate 405 to move downward. When the vertical plate 405 moves downward, it will contact the trapezoidal block 406. When the vertical plate 405 contacts the trapezoidal block 406, it will cause the trapezoidal block 406 to move outward. When the trapezoidal block 406 moves, it will drive the limiting plate 407 to move. When the limiting plate 407 moves, it will release the limit on the free end of the elastic telescopic column 213. After the limit on the free end of the elastic telescopic column 213 is released, the free end of the elastic telescopic column 213 will move downward. When the free end of the elastic telescopic column 213 moves downward, it will disengage from the rotating column 211. When the rotating column 211 disengages from the elastic telescopic column 213, the bottom column 212 will stop rotating, thus avoiding wasting time due to the lack of reagent stirring.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A biological treatment device for wastewater from polyether polyol production, comprising a tank (1) and a motor, characterized in that, A dispensing device for rapidly mixing materials in the required proportions, comprising a dispensing device, the dispensing device further comprising; A sealing box (201) is fixedly installed on the top of the machine tank (1). A sliding rod (202) slides through the top of the sealing box (201). A buoyancy ball (203) is fixedly installed at the bottom of the sliding rod (202). The buoyancy ball (203) is used to detect the content of wastewater inside the machine tank (1). A fixed circle (205) is fixedly installed on the inner wall of the sealed box (201). A gear (206) is rotatably inserted through the side of the fixed circle (205) near the slide rod (202). A bidirectional tube (207) is fixedly installed on the side of the gear (206) away from the slide rod (202). The bidirectional tube (207) is used to rapidly release a specific drug. A fixing block (210) is fixedly installed on the top of the machine tank (1). A rotating column (211) is rotatably passed through the top of the fixing block (210). The top of the rotating column (211) is fixedly connected to the output end of the motor. A bottom column (212) is rotatably passed through the top of the machine tank (1). The rotating column (211) is used to separate the motor from the bottom column (212) for easy subsequent maintenance.

2. The biological treatment device for polyether polyol production wastewater according to claim 1, characterized in that, The feeding device also includes a protrusion (208) and an elastic telescopic column (213). The protrusion (208) is fixedly installed on the inner wall of the fixed circle (205) away from the gear (206), and the fixed end of the elastic telescopic column (213) is fixedly installed on the top of the bottom column (212).

3. The biological treatment device for polyether polyol production wastewater according to claim 2, characterized in that, The free end of the elastic telescopic column (213) is in contact with the rotating column (211), the bidirectional tube (207) is in contact with the protrusion (208), the slide rod (202) has a toothed block rotatably installed on the side near the gear (206), the slide rod (202) meshes with the gear (206), and the top of the sealing box (201) is provided with a medicine box; The machine tank (1) is equipped with a cleaning device inside for quickly cleaning up impurities formed after the agent combines with the interior, and a prevention device on the top of the machine tank (1) for pressing down the agent and preventing agitation without the agent.

4. The biological treatment device for polyether polyol production wastewater according to claim 3, characterized in that, The cleaning device includes a ring (301), a connecting plate (302), a screen frame (303), a slider (304), a connecting rod (305), a sliding plate (306), a scraper (307), and a baffle (308). A reciprocating spiral groove is formed on the circumferential surface of the bottom column (212). The ring (301) is slidably mounted on the reciprocating spiral groove. One end of the connecting plate (302) is fixedly mounted on the circumferential surface of the ring (301), and the other end of the connecting plate (302) is slidably connected to the inner wall of the machine tank (1). The screen frame (303) is fixedly mounted on the bottom column. On the bottom circumferential surface of (212), one end of the slider (304) is slidably mounted on the bottom of the ring (301), one end of the connecting rod (305) is rotatably mounted on the other end of the slider (304), the slide plate (306) is rotatably mounted on the other end of the connecting rod (305), the slide plate (306) is slidably mounted inside the screen frame (303), the scraper (307) is rotatably mounted on the side of the slide plate (306) near the screen frame (303), and the baffle (308) is fixedly mounted on the side of the scraper (307) near the bottom column (212).

5. The biological treatment device for polyether polyol production wastewater according to claim 4, characterized in that, The cleaning device also includes a collection pipe (309), a bottom plate (310), a bottom block (311), and a flexible rod (312). The collection pipe (309) is fixedly installed on the side of the screen frame (303) away from the bottom column (212). The bottom plate (310) is slidably installed on the bottom of the collection pipe (309). The bottom block (311) is slidably installed on the bottom of the machine tank (1). A rotating plate is rotatably installed on the top of the bottom block (311). The flexible rod (312) is fixedly installed on the bottom of the buoyancy ball (203).

6. A biological treatment device for polyether polyol production wastewater according to claim 5, characterized in that, The flexible rod (312) contacts the screen frame (303), the rotating plate at the top of the bottom block (311) contacts the bottom plate (310), the scraper (307) contacts the baffle (308), and a spring door is slidably installed on the side of the collection pipe (309) near the screen frame (303).

7. A biological treatment device for polyether polyol production wastewater according to claim 6, characterized in that, The preventive device includes an elastic telescopic rod (401), a right-angle plate (402), a pressure plate (403), an elastic telescopic contact plate (404), a vertical plate (405), a trapezoidal block (406), and a limiting plate (407). The fixed end of the elastic telescopic rod (401) is fixedly installed on the top of the connecting plate (302). One end of the right-angle plate (402) is fixedly installed on the free end of the elastic telescopic rod (401). The pressure plate (403) is fixedly installed on the other end of the right-angle plate (402). The pressure plate (403) is slidably connected to the medicine box. The fixed end of the elastic telescopic contact plate (404) is fixedly installed on the top of the machine tank (1). One end of the vertical plate (405) is fixedly installed on the top of the free end of the elastic telescopic contact plate (404). The limiting plate (407) is slidably installed on the top of the machine tank (1). The trapezoidal block (406) is fixedly installed on the top of the end of the limiting plate (407) away from the rotating column (211).

8. A biological treatment device for polyether polyol production wastewater according to claim 7, characterized in that, The vertical plate (405) contacts the trapezoidal block (406), the limiting plate (407) contacts the elastic telescopic column (213), and the right-angle plate (402) contacts the elastic telescopic contact plate (404).

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