A device for treating wastewater in the production of levofloxacin

Abstract

The application accords with the field of water pollution control and treatment technology, and particularly relates to a wastewater treatment device for producing left phosphorus right amine salt. The device comprises an evaporation reaction kettle, a plurality of evaporation pipes are fixedly connected to the middle part of the evaporation reaction kettle, the evaporation reaction kettle is divided into a feeding cavity, a discharging cavity and a heat exchange cavity, the evaporation reaction kettle is provided with a temperature sensor for detecting the gas in the heat exchange cavity, the evaporation reaction kettle is fixedly connected with a first push rod, the evaporation reaction kettle is slidably connected with a sliding shaft, the telescopic end of the first push rod is fixedly connected with the sliding shaft, the sliding shaft is fixedly connected with a blocking frame, and the blocking frame is used for blocking the plurality of evaporation pipes. After the high-temperature steam temperature is lower than the required value, the injection of wastewater is stopped and the plurality of evaporation pipes are blocked, so that the wastewater is accumulated in the feeding cavity, the wastewater is isolated from entering the evaporation pipes, the production amount of incompletely evaporated concentrated liquid is reduced, and the concentration of the concentrated liquid is stabilized.

Description

Technical Field

[0001] This invention belongs to the field of water pollution control and treatment technology, and in particular relates to a wastewater treatment device for the production of levophosphorus and daminozide salts. Background Technology

[0002] Levophosphorus and amine salts are compounds containing phosphorus and amine groups, widely used in the synthesis of various chemicals such as pesticides and pharmaceuticals. The production of levophosphorus and amine salts generates high-salt wastewater. If this wastewater is directly discharged into the environment, it will cause serious pollution to aquatic ecosystems. Therefore, falling film evaporators are usually used to treat this high-salt wastewater. By heating the wastewater, the water in the wastewater is evaporated, thereby concentrating the dissolved salts for subsequent treatment or recycling.

[0003] The working principle of a falling film evaporator is to heat wastewater using a heat source (usually steam supplied by a boiler). The wastewater flows downward along the wall of the evaporation tubes inside the equipment, forming a thin film and rapidly evaporating the water. However, in actual operation, the operational stability of a falling film evaporator is affected by a variety of factors, the most critical of which is the stability of the heat source supply. Due to factors such as untimely fuel addition and unstable combustion efficiency, the temperature of the boiler providing the heat source may fluctuate, causing the actual treatment temperature of the wastewater to be lower than the required evaporation temperature. This results in a reduction in evaporation efficiency, specifically insufficient evaporation of water from the wastewater. Consequently, the concentration of the final concentrate does not meet the expected standards, affecting the effectiveness of subsequent treatment processes and the recycling rate. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the background art, the present invention provides a wastewater treatment device for the production of levophosphorus and daminozide salts.

[0005] The technical implementation scheme of the present invention is as follows: a wastewater treatment device for the production of levophosphorus and dextromethorphan salts, comprising an evaporation reactor, wherein a plurality of evaporation tubes are fixedly connected to the middle of the evaporation reactor, the evaporation reactor is divided into a feed chamber, a discharge chamber and a heat exchange chamber, the feed chamber is connected to the discharge chamber through the plurality of evaporation tubes, the evaporation reactor is provided with a temperature sensor for detecting the gas in the heat exchange chamber, the evaporation reactor is fixedly connected with a first push rod, the evaporation reactor is slidably connected with a sliding shaft, the telescopic end of the first push rod is fixedly connected to the sliding shaft, the sliding shaft is fixedly connected with a sealing frame, the sealing frame is used to seal the plurality of evaporation tubes, isolating the feed chamber from the evaporation tubes, the evaporation reactor is provided with a docking module for material discharge and injection, and the evaporation reactor is provided with a collection component for collecting wastewater in the evaporation tubes.

[0006] Furthermore, a grid plate for uniformly diverting wastewater is fixedly connected to the sealing frame.

[0007] Furthermore, the collection assembly includes a collection shell, which is fixedly connected to the evaporation reactor and located in the discharge chamber. A sealing piston is fixedly connected to the sliding shaft inside the collection shell. The sealing piston is used to seal the collection shell and collect wastewater from several evaporation tubes. The evaporation reactor is equipped with a reflux assembly for returning the wastewater from the collection shell to the feed chamber.

[0008] Furthermore, the reflux assembly includes an extraction pump, which is fixedly connected to the outside of the evaporation reactor. A first pipe and a second pipe are fixedly connected to the outside of the evaporation reactor. The two ends of the first pipe are respectively connected to the collection shell and the liquid inlet of the extraction pump. The two ends of the second pipe are respectively connected to the feed chamber and the liquid outlet of the extraction pump. The evaporation reactor is provided with a pusher assembly for the stable entry of wastewater into the evaporation tube.

[0009] Furthermore, the evaporation reactor is fixedly connected to a water pipe, which is connected to the collection shell and used to dilute the wastewater in the collection shell.

[0010] Furthermore, the water pipe is spiral-shaped inside the discharge chamber to increase the heat exchange area with the concentrate.

[0011] Furthermore, the feeding assembly includes a second push rod, which is fixedly connected to the evaporation reactor. A sleeve is fixedly connected to the telescopic end of the second push rod. The sleeve is slidably connected to the sliding shaft, and the sliding shaft is located inside the sleeve. The sleeve is slidably and sealed to the evaporation reactor. A sliding plate is fixedly connected to the sleeve, and several evaporation tubes are slidably and sealed to the sliding plate.

[0012] Furthermore, it also includes a bulk material assembly for dispersing the refluxed wastewater. The bulk material assembly is disposed inside the evaporation reactor and located in the feed chamber. The bulk material assembly includes a fixed outer ring, which is fixedly connected to the inner wall of the feed chamber. The fixed outer ring is rotatably connected to a rotating inner ring, and the two cooperate to form a cavity. This cavity is connected to the second pipe. The evaporation reactor is provided with a drive module that drives the rotating inner ring to rotate. The rotating inner ring is rotatably connected to a nozzle. A flexible tube is fixedly connected between the nozzle and the rotating inner ring. The cavity formed by the fixed outer ring and the rotating inner ring is connected to the nozzle through the flexible tube.

[0013] Furthermore, the rotating inner ring is slidably connected to a rack frame, the nozzle is fixedly connected to a transmission gear that meshes with the rack frame, and an elastic element is provided between the rack frame and the rotating inner ring.

[0014] Furthermore, the fixed outer ring is fixedly connected with circumferentially distributed extrusion blocks, which are used to extrude the rack frame to move.

[0015] The beneficial effects of the present invention are as follows: 1. The present application stops the injection of wastewater and blocks several evaporation tubes after the high temperature steam temperature is lower than the required value, so that the wastewater accumulates in the feed chamber, isolates the wastewater from entering the evaporation tubes, reduces the amount of incompletely evaporated concentrate, and stabilizes the concentration of the concentrate.

[0016] 2. By sealing the collection shell with a sealing piston, the concentrate that has not been completely evaporated through several evaporation tubes is collected and returned to the feed chamber for secondary evaporation, further reducing the amount of incompletely evaporated concentrate and stabilizing the concentration of the concentrate.

[0017] 3. Inject purified water into the collection shell through the water injection pipe to dilute the concentrate, reduce the load on the extraction pump, and maintain the original concentration of wastewater in the feed chamber to prevent the concentration of wastewater in the feed chamber from increasing, thereby increasing the probability of excessive evaporation in the evaporation tube.

[0018] 4. By changing the height of the sliding plate, the level of wastewater accumulated in the feeding chamber is lowered to below the top of the evaporation tube. The sliding plate is then gradually reset, causing the wastewater in the feeding chamber to gradually overflow into the evaporation tube from the top, allowing the wastewater to flow down the inner wall of the evaporation tube and ensuring complete evaporation of the wastewater. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This is a three-dimensional cross-sectional view of the evaporation reactor of the present invention;

[0021] Figure 3 This is a three-dimensional structural diagram of the collecting shell and the sealing piston of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the second push rod and sleeve of the present invention;

[0023] Figure 5 This is a three-dimensional structural diagram of the sliding shaft and sleeve of the present invention;

[0024] Figure 6 This is a three-dimensional structural diagram of the water injection pipe of the present invention;

[0025] Figure 7 This is a three-dimensional structural diagram of the fixed outer ring and the rotating inner ring of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of the rack frame and transmission gear of the present invention;

[0027] Reference numerals: 1-Evaporation reactor, 2-Evaporation tube, 3-Feed chamber, 4-Discharge chamber, 5-Heat exchange chamber, 6-Temperature sensor, 7-First push rod, 8-Sliding shaft, 9-Sealing frame, 10-Water injection pipe, 11-Drainage pipe, 12-Gas injection pipe, 13-Exhaust pipe, 14-Steam outlet pipe, 15-Grid plate, 201-Collection shell, 202-Sealing piston, 203-Extraction pump, 204-First pipe, 205-Second pipe, 301-Water pipe, 401-Second push rod, 402-Sleeve, 403-Sliding plate, 501-Fixed outer ring, 502-Rotating inner ring, 503-Drive module, 504-Nozzle, 505-Flexible tube, 506-Rack frame, 507-Transmission gear, 508-Elastic element, 509-Extrusion block. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] The operational stability of falling film evaporators is affected by a variety of factors, among which the stability of the heat source supply is particularly critical. Issues such as untimely fuel replenishment or incomplete combustion in the heating boiler can easily cause temperature fluctuations, resulting in the actual temperature during wastewater treatment being lower than the required evaporation temperature. This reduces evaporation efficiency, specifically manifesting as insufficient evaporation of water from the wastewater, and the concentration of the resulting concentrate failing to meet the set standards, thus affecting subsequent treatment effects and resource recovery rates.

[0030] Example 1

[0031] This embodiment discloses a wastewater treatment device for the production of levophosphorus and dextromethorphan salts, used to treat wastewater from the production of levophosphorus and dextromethorphan salts.

[0032] like Figures 1-5As shown, the reactor includes an evaporation reactor 1. Several evaporation tubes 2 are fixedly connected to the center of the reactor 1, and are evenly distributed inside. The reactor 1 is divided into a feed chamber 3, a discharge chamber 4, and a heat exchange chamber 5, located at the upper, middle, and lower parts of the reactor 1, respectively. The feed chamber 3 is connected to the discharge chamber 4 via the evaporation tubes 2, allowing the wastewater produced during the preparation of levophosphorus and dextromethorphan salts (hereinafter referred to as wastewater) to flow downwards for evaporation. The reactor 1 is equipped with a temperature sensor 6 for detecting the gas inside the heat exchange chamber 5. The temperature sensor 6 is located in the middle of the evaporation reactor 1, specifically at the heat exchange chamber 5. A support frame is fixedly connected to the top of the evaporation reactor 1, and a first push rod 7 is fixedly connected to the support frame at the top of the evaporation reactor 1. The first push rod 7 is an electric push rod. A sliding shaft 8 is slidably connected inside the evaporation reactor 1. The telescopic end of the first push rod 7 is fixedly connected to the sliding shaft 8. A sealing frame 9 is fixedly connected to the sliding shaft 8. The sealing frame 9 is used to seal several evaporation tubes 2. The telescopic end of the first push rod 7 drives the sealing frame 9 downward through the sliding shaft 8, which can seal several evaporation tubes 2, isolating the feed chamber 3 from the evaporation tubes 2. The initial state is sealed. The sealing frame 9 does not block several evaporation tubes 2. A grid plate 15 for uniformly diverting wastewater is fixedly connected to the sealing frame 9. The grid plate 15 is used to divert wastewater. The sealing frame 9 is located below the grid plate 15 to prevent wastewater from directly entering the evaporation tubes 2. The evaporation reactor 1 is equipped with a docking module for material discharge and injection. The docking module consists of a water injection pipe 10, a liquid discharge pipe 11, a gas injection pipe 12, a gas exhaust pipe 13, and a steam outlet pipe 14. The top and bottom of the evaporation reactor 1 are fixedly connected to the water injection pipe 10 and the liquid discharge pipe 11, respectively. The water injection pipe 10 is connected to the feed chamber 3, and the liquid discharge pipe 11 is connected to the discharge chamber 4. The water injection pipe 10 is used for... Wastewater is injected into the feed chamber 3, and the drain pipe 11 is used to discharge the concentrated liquid after evaporation. The middle part of the evaporation reactor 1 is fixedly connected to the gas injection pipe 12 and the exhaust pipe 13. Both the gas injection pipe 12 and the exhaust pipe 13 are connected to the heat exchange chamber 5. The gas injection pipe 12 is located above the exhaust pipe 13. The gas injection pipe 12 is used to inject high-temperature steam into the heat exchange chamber 5, and the exhaust pipe 13 is used to discharge high-temperature steam. The lower part of the evaporation reactor 1 is fixedly connected to the steam outlet pipe 14. The steam outlet pipe 14 is connected to the discharge chamber 4. The steam outlet pipe 14 is used to discharge the steam after the wastewater is evaporated. The evaporation reactor 1 is equipped with a collection component for collecting wastewater in the evaporation pipe 2.

[0033] like Figure 2 , Figure 3 and Figure 6As shown, the collection assembly includes a collection shell 201, which is fixedly connected to the evaporation reactor 1. The collection shell 201 is located in the discharge chamber 4. The upper part of the collection shell 201 is attached to the inner wall of the evaporation reactor 1, the middle part is conical to guide the concentrated liquid, and the bottom is a cylindrical shell. A blocking piston 202 is fixedly connected to the sliding shaft 8 inside the collection shell 201. The blocking piston 202 is used to block the collection shell 201. The telescopic end of the first push rod 7 drives the blocking frame 9 to move downward through the sliding shaft 8 to block several evaporation tubes 2. At the same time, it drives the blocking piston 202 on the sliding shaft 8 to block the collection shell 201 and collect the wastewater in several evaporation tubes 2. In the initial state, the sliding shaft 8 does not block the collection shell 201. The evaporation reactor 1 is equipped with a reflux assembly for returning the wastewater in the collection shell 201 to the feed chamber 3.

[0034] like Figure 2 , Figure 3 and Figure 6 As shown, the reflux assembly includes a pump 203, which is fixedly connected to the outside of the evaporation reactor 1. A first pipe 204 and a second pipe 205 are fixedly connected to the outside of the evaporation reactor 1. The two ends of the first pipe 204 are connected to the collection shell 201 and the inlet of the pump 203, respectively. The connection between the first pipe 204 and the collection shell 201 is located at the cylindrical shell at the bottom of the collection shell 201. When the sliding shaft 8 drives the sealing piston 202 to seal the collection shell 201, the sealing piston 202 moves to below the first pipe 204. The two ends of the second pipe 205 are connected to the feed chamber 3 and the outlet of the pump 203, respectively. The pump 203 can reflux the collection shell 201 through the first pipe 204 and the second pipe 205. The concentrated liquid is returned to the feed chamber 3. The evaporation reactor 1 is equipped with a pusher assembly for the stable entry of wastewater into the evaporation tube 2. The evaporation reactor 1 is fixedly connected to a water pipe 301. The connection between the water pipe 301 and the collection shell 201 is also located at the cylindrical shell at the bottom of the collection shell 201. The water pipe 301 is connected to the collection shell 201 to dilute the wastewater in the collection shell 201. The connection between the collection shell 201, the water pipe 301, and the first pipe 204 is at the same height. The water pipe 301 is spiral in the discharge chamber 4 to increase the heat exchange area with the concentrated liquid. A one-way valve (not shown in the figure) is provided at the connection between the water pipe 301 and the collection shell 201 to prevent the concentrated liquid in the collection shell 201 from entering the water pipe 301.

[0035] Working principle: When the wastewater produced from the preparation of levophosphorus and dextromethorphan salts needs to be treated, high-temperature steam enters the heat exchange chamber 5 through the gas injection pipe 12 and is discharged through the exhaust pipe 13. Then, the wastewater enters the feed chamber 3 at the top of the evaporation reactor 1 through the water injection pipe 10. The wastewater falls downwards under gravity onto the grid plate 15 on the upper side of the sealing frame 9, so that the wastewater is evenly dispersed and flows downwards through the grid plate 15 and enters several evaporation tubes 2. The wastewater flows downwards along the inner wall of the evaporation tubes 2, and exchanges heat with the high-temperature steam in the heat exchange chamber 5 during this period, evaporating the water in the wastewater and turning the wastewater into concentrated liquid and steam. The concentrated liquid moves downwards into the discharge chamber 4, where it accumulates. The steam is discharged along the steam outlet pipe 14. When the accumulated concentrated liquid forms a liquid seal, the drain pipe 11 at the bottom is opened to gradually discharge the concentrated liquid. This cycle continues until the wastewater treatment is completed. Then, the injection of high-temperature steam and the injection of wastewater are stopped, and the concentrated liquid at the bottom is discharged. When the wastewater needs to be treated again, the above steps are repeated.

[0036] During the above process, the temperature sensor 6 will continuously detect the temperature of the high-temperature steam in the heat exchange chamber 5. When the temperature of the high-temperature steam is lower than the evaporation temperature for a long time (this time can be between 5 and 10 seconds), the telescopic end of the first push rod 7 drives the sliding shaft 8 to slide downward, so that the sliding shaft 8 drives the sealing frame 9 to fit against several evaporation tubes 2, sealing several evaporation tubes 2. At the same time, the injection of wastewater into the feed chamber 3 is stopped. By stopping the injection of wastewater and sealing several evaporation tubes 2 after the temperature of the high-temperature steam is lower than the required value, the wastewater is accumulated in the feed chamber 3, isolating the wastewater from entering the evaporation tubes 2, reducing the amount of incompletely evaporated concentrate, and stabilizing the concentration of the concentrate.

[0037] As the sliding shaft 8 slides downward, it drives the sealing piston 202 to move downward synchronously, causing the sealing piston 202 to seal the collection shell 201. This causes the wastewater in the evaporation tube 2 to accumulate in the collection shell 201, preventing it from falling into the concentrate at the bottom of the discharge chamber 4. Then, the extraction pump 203 is turned on, drawing out the concentrate accumulated in the collection shell 201. The concentrate then flows back to the feed chamber 3 along the first pipe 204, the extraction pump 203, and the second pipe 205, mixing with the wastewater in the feed chamber 3 for secondary evaporation. By sealing the collection shell 201 with the sealing piston 202, the concentrate that has not been completely evaporated through the evaporation tubes 2 is collected and returned to the feed chamber 3 for secondary evaporation, further reducing the amount of incompletely evaporated concentrate and stabilizing the concentration of the concentrate.

[0038] When the pump 203 draws the concentrate from the collection shell 201, clean water is first injected into the water pipe 301. The clean water flows into the collection shell 201 along the water pipe 301 to dilute the concentrate. During this process, the water pipe 301 exchanges heat with the concentrate at the bottom of the discharge chamber 4 to increase the temperature of the clean water and enhance the dilution and mixing rate of the clean water and the concentrate. Then, the pump 203 is turned on, and the diluted concentrate flows back to the feed chamber 3. Clean water is then injected into the collection shell 201 through the water pipe 301 to dilute the concentrate, reducing the load on the pump 203 and maintaining the original concentration of wastewater in the feed chamber 3. This prevents the concentration of wastewater in the feed chamber 3 from increasing, which would increase the probability of excessive evaporation in the evaporation tube 2.

[0039] After the above reflux operation is completed and the temperature sensor 6 detects that the temperature of the high-temperature steam has returned to normal, the telescopic end of the first push rod 7 drives the sliding shaft 8 to reset, releasing the sealing frame 9 from the sealing of several evaporation tubes 2. At the same time, the sealing piston 202 releases the sealing of the collection shell 201 and injects wastewater into the feed chamber 3 again. At this moment, the wastewater in the feed chamber 3 enters several evaporation tubes 2 to carry out evaporation again. When the above problem occurs again, the above steps are repeated.

[0040] Example 2

[0041] This embodiment discloses a wastewater treatment device for the production of levophosphorus and dextromethorphan salts, which is a further improvement on the basis of Embodiment 1.

[0042] like Figure 3 and Figure 4 As shown, the feeding assembly includes a second push rod 401, which is fixedly connected to a support frame on the top of the evaporation reactor 1. A sleeve 402 is fixedly connected to the telescopic end of the second push rod 401. The sleeve 402 is slidably connected to the sliding shaft 8, and the sliding shaft 8 is located inside the sleeve 402. A through groove is provided on the sleeve 402 for connecting the sliding shaft 8 to the sealing frame 9 and for providing space for the sliding shaft 8 to drive the sealing frame 9. The sleeve 402 is slidably and sealed to the evaporation reactor 1. A sliding plate 403 is fixedly connected to the sleeve 402. In the initial state, the upper side of the sliding plate 403 is flush with the upper side of several evaporation tubes 2. Several evaporation tubes 2 are slidably and sealed to the sliding plate 403. The telescopic end of the second push rod 401 can drive the sliding plate 403 to slide downward through the sleeve 402, so that the upper side of the sliding plate 403 is lower than the upper side of several evaporation tubes 2, thereby increasing the volume of the feeding chamber 3.

[0043] Working principle: After the concentrated liquid flows back into the feed chamber 3 and mixes with the wastewater inside, the sealing frame 9 is still blocking the evaporation tubes 2. The wastewater in the feed chamber 3 cannot enter the evaporation tubes 2. At this time, the wastewater in the feed chamber 3 is in a state of accumulation. If the sealing frame 9 is directly released from the evaporation tubes 2, a large amount of wastewater accumulated in the feed chamber 3 will enter the evaporation tubes 2. Some of the wastewater will fall directly from the middle of the evaporation tubes 2 and cannot flow along the inner wall, reducing the amount of wastewater evaporation. When the concentrated liquid in the collection shell 201 is completely returned to the feed chamber 3, the telescopic end of the second push rod 401 drives the sleeve 402 to move downward, causing the sleeve 402 to drive the sliding plate 403 to move downward. At this time, the sliding plate 403 moves downward synchronously along the evaporation tubes 2, causing the wastewater level accumulated in the feed chamber 3 to drop below the top of the evaporation tubes 2.

[0044] When wastewater treatment needs to continue, after the sealing frame 9 releases the seal on several evaporation tubes 2, the telescopic end of the second push rod 401 drives the sliding plate 403 to move upward through the sleeve 402, causing the wastewater level in the feeding chamber 3 to gradually rise. When the wastewater level rises to the top of the evaporation tube 2, the wastewater in the feeding chamber 3 gradually overflows into the interior of the evaporation tube 2 around the top, causing the wastewater to flow downward along the inner wall of the evaporation tube 2, ensuring the amount of wastewater evaporation. This continues until the sliding plate 403 returns to its initial state, that is, all the wastewater in the feeding chamber 3 flows into the evaporation tube 2. Then, wastewater is injected into the feeding chamber 3 through the water injection pipe 10 to continue the wastewater treatment.

[0045] Example 3

[0046] This embodiment discloses a wastewater treatment device for the production of levophosphorus and dextrin, which is a further improvement on the basis of embodiment 2.

[0047] like Figure 2 , Figure 7 and Figure 8As shown, it also includes a bulk material assembly for dispersing the reflux wastewater. The bulk material assembly is disposed inside the evaporation reactor 1 and located in the feed chamber 3. The bulk material assembly includes a fixed outer ring 501, which is fixedly connected to the inner wall of the feed chamber 3 and located above the sealing frame 9. The fixed outer ring 501 is rotatably connected to a rotating inner ring 502, and the two cooperate to form a cavity. This cavity is connected to the second pipe 205. The concentrated liquid in the collection shell 201 is drawn into the fixed outer ring 502 by the extraction pump 203. Within the cavity formed by the rotating inner ring 502, the evaporation reactor 1 is equipped with a drive module 503 that drives the rotating inner ring 502 to rotate. The drive module 503 consists of a servo motor, a spur gear, and a gear ring. The servo motor is fixedly connected to a support frame at the top of the evaporation reactor 1. The output shaft of the servo motor is rotatably connected to the evaporation reactor 1. The output shaft of the servo motor is fixedly connected to a spur gear. The rotating inner ring 502 is fixedly connected to a gear ring that meshes with the spur gear. A nozzle 504 is rotatably connected to the rotating inner ring 502. A flexible tube 505 is fixedly connected between the outer ring 501 and the inner rotating ring 502. The length of the flexible tube 505 is provided to accommodate changes in the position of the nozzle 504. The cavity formed by the outer ring 501 and the inner rotating ring 502 is connected to the nozzle 504 through the flexible tube 505. This allows the concentrated liquid in the cavity formed by the outer ring 501 and the inner rotating ring 502 to enter the feed chamber 3 after passing through the flexible tube 505 and the nozzle 504. The inner rotating ring 502 is slidably connected to a rack and pinion frame 506, and the nozzle 504 is fixedly connected to a rack and pinion frame 506. The rack and pinion 506 is engaged with a transmission gear 507. An elastic element 508, which is a spring, is provided between the rack and pinion 506 and the rotating inner ring 502. The elastic element 508 is used to drive the rack and pinion 506 to reset. A circumferentially distributed pressing block 509 is fixedly connected to the fixed outer ring 501. The pressing block 509 is an isosceles triangle. The base of the pressing block 509 is in contact with the fixed outer ring 501. The pressing block 509 is used to press the rack and pinion 506 to move. The waist of the pressing block 509 is used to press the rack and pinion 506 to move downward.

[0048] Working principle: When the concentrated liquid in the collection shell 201 flows back to the feeding chamber 3 under the action of the extraction pump 203, the concentrated liquid first enters the cavity formed by the fixed outer ring 501 and the rotating inner ring 502 along the second pipe 205. The concentrated liquid enters the flexible tube 505 from this cavity, and then is sprayed out by the nozzle 504, so that the concentrated liquid enters the feeding chamber 3. At the same time, the drive module 503 is activated. The drive module 503 controls the rotating inner ring 502 to rotate along the fixed outer ring 501. The rotating inner ring 502 drives the nozzle 504 to rotate synchronously, continuously changing the position of the nozzle 504 spraying the concentrated liquid, so that the concentrated liquid is evenly mixed with the wastewater in the feeding chamber 3. When the rotating inner ring 502 drives the nozzle 504 to rotate, the rotating inner ring 502... The rack and pinion 506 on it rotates synchronously, and the rack and pinion 506 contacts the extrusion block 509. The extrusion block 509 extrudes the rack and pinion 506 downward, while the elastic element 508 is compressed. The rack and pinion 506 drives the nozzle 504 to deflect through the transmission gear 507, changing the spray angle of the nozzle 504. When the rack and pinion 506 separates from the extrusion block 509, the elastic element 508 drives the rack and pinion 506 to reset. At the same time, the rack and pinion 506 drives the nozzle 504 to reset through the transmission gear 507, causing the nozzle 504 to swing back and forth, changing the spray angle of the nozzle 504, further improving the mixing uniformity of the concentrate and wastewater, stabilizing the concentration of the mixed wastewater in the feed chamber 3, and ensuring that the degree of wastewater evaporation is uniform and stable.

[0049] This process continues until the concentrated liquid in the collection shell 201 has finished refluxing. Then, the drive module 503 is turned off. When it is necessary to reflux the concentrated liquid in the collection shell 201 again, the above steps are repeated.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts, characterized in that: The reactor includes an evaporation reactor (1), in which several evaporation tubes (2) are fixedly connected in the middle. The evaporation reactor (1) is divided into a feed chamber (3), a discharge chamber (4), and a heat exchange chamber (5). The feed chamber (3) is connected to the discharge chamber (4) through several evaporation tubes (2). The evaporation reactor (1) is equipped with a temperature sensor (6) for detecting the gas in the heat exchange chamber (5). The evaporation reactor (1) is fixedly connected with a first push rod (7). The reactor (1) is slidably connected to a sliding shaft (8), and the telescopic end of the first push rod (7) is fixedly connected to the sliding shaft (8). The sliding shaft (8) is fixedly connected to a sealing frame (9), which is used to seal several of the evaporation tubes (2) and isolate the feed chamber (3) from the evaporation tubes (2). The evaporation reactor (1) is provided with a docking module for material discharge and injection, and the evaporation reactor (1) is provided with a collection component for collecting wastewater in the evaporation tubes (2). The collection assembly includes a collection shell (201), which is fixedly connected to the evaporation reactor (1). The collection shell (201) is located in the discharge chamber (4). The sliding shaft (8) is fixedly connected to a blocking piston (202) in the collection shell (201). The blocking piston (202) is used to block the collection shell (201) and collect wastewater from several evaporation tubes (2). The evaporation reactor (1) is equipped with a reflux assembly for returning the wastewater in the collection shell (201) to the feed chamber (3). The reflux assembly includes an extraction pump (203), which is fixedly connected to the outside of the evaporation reactor (1). The outside of the evaporation reactor (1) is fixedly connected to a first pipe (204) and a second pipe (205). The two ends of the first pipe (204) are respectively connected to the collection shell (201) and the liquid inlet of the extraction pump (203). The two ends of the second pipe (205) are respectively connected to the feed chamber (3) and the liquid outlet of the extraction pump (203). The evaporation reactor (1) is provided with a pusher assembly for the stable entry of wastewater into the evaporation tube (2). The feeding assembly includes a second push rod (401), which is fixedly connected to the evaporation reactor (1). A sleeve (402) is fixedly connected to the telescopic end of the second push rod (401). The sleeve (402) is slidably connected to the sliding shaft (8), and the sliding shaft (8) is located inside the sleeve (402). The sleeve (402) is sealed and slidably connected to the evaporation reactor (1). A sliding plate (403) is fixedly connected to the sleeve (402). Several evaporation tubes (2) are sealed and slidably connected to the sliding plate (403).

2. The wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 1, characterized in that: The sealing frame (9) is fixedly connected to a grid plate (15) for uniformly diverting wastewater.

3. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 1, characterized in that: The evaporation reactor (1) is fixedly connected to a water pipe (301), which is connected to the collection shell (201) and is used to dilute the wastewater in the collection shell (201).

4. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 3, characterized in that: The water pipe (301) is spiral-shaped inside the discharge chamber (4) to increase the heat exchange area with the concentrate.

5. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 1, characterized in that: It also includes a bulk material assembly for dispersing the reflux wastewater. The bulk material assembly is disposed in the evaporation reactor (1) and located in the feed chamber (3). The bulk material assembly includes a fixed outer ring (501), which is fixedly connected to the inner wall of the feed chamber (3). The fixed outer ring (501) is rotatably connected to a rotating inner ring (502). The two cooperate to form a cavity, which is connected to the second pipe (205). The evaporation reactor (1) is provided with a drive module (503) that drives the rotating inner ring (502) to rotate. The rotating inner ring (502) is rotatably connected to a nozzle (504). A flexible tube (505) is fixedly connected between the nozzle (504) and the rotating inner ring (502). The cavity formed by the fixed outer ring (501) and the rotating inner ring (502) is connected to the nozzle (504) through the flexible tube (505).

6. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 5, characterized in that: The rotating inner ring (502) is slidably connected to a rack frame (506), the nozzle (504) is fixedly connected to a transmission gear (507) that meshes with the rack frame (506), and an elastic element (508) is provided between the rack frame (506) and the rotating inner ring (502).

7. A wastewater treatment device for the production of levophosphorus and dextromethorphan salts according to claim 6, characterized in that: The fixed outer ring (501) is fixedly connected to circumferentially distributed extrusion blocks (509), which are used to extrude the rack frame (506) to move.

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