Waste liquid recovery device

By introducing diversion and cooling components into the waste liquid recovery device, the problem of small contact area of ​​cooling pipes is solved, achieving efficient cooling and convenient disassembly, thus improving the practicality and safety of the waste liquid recovery device.

CN224062476UActive Publication Date: 2026-03-31YANGTZE RIVER PHARM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-04
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Traditional waste liquid recovery devices have a small contact area between the cooling pipes and the condenser, resulting in low cooling recovery efficiency and the risk of solvent decomposition, which affects the practicality and safety of the device.

Method used

The device employs a split-flow and cooling component design, including a split-flow pipe, condenser cylinder, condenser, and fan. It improves heat exchange efficiency through a multi-stage condensation and split-flow structure, and enables convenient disassembly and maintenance of the device through quick-release components.

Benefits of technology

This technology enables efficient cooling and recovery of waste liquid, improves the practicality and safety of the equipment, reduces the risk of solvent decomposition, and enhances the efficiency and environmental friendliness of waste liquid recovery.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of waste liquid recovery, and discloses a waste liquid recovery device which comprises a supporting table, a plurality of heating vessels are fixedly connected in the supporting table, heating furnaces are arranged below the heating vessels, sealing covers are arranged on the upper surfaces of the heating vessels, a flow dividing assembly is installed on one side of the outer wall of the supporting table, and the flow dividing assembly is connected with the heating vessels. A guide assembly is installed in the sealing cover, and a cooling assembly is installed on the upper surface of the supporting table. The cooling assembly comprises a condensation cylinder, the lower surface of the condensation cylinder is fixedly connected to the upper surface of the supporting table, and a condenser is fixedly connected to the upper surface of the condensation cylinder. According to the organic waste liquid recycling device, waste liquid is conveyed to the multiple heating vessels through the first flow dividing pipe to be heated, evaporated organic gas is guided to the organic waste liquid recycling pipe through the draught fan and then conveyed to the second flow dividing pipe through the annular pipeline, meanwhile, the condenser cooling condensation barrel and the conical sleeve make contact with condensate, efficient cooling gas condensation is achieved, and collection is convenient; and the practicability of the device is improved.
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Description

Technical Field

[0001] This utility model relates to the field of waste liquid recycling technology, and in particular to a waste liquid recycling device. Background Technology

[0002] Waste liquid refers to waste liquids containing hazardous substances generated in laboratories or industrial production. Waste liquid recovery devices purify and regenerate organic solvents in waste liquids through technologies such as filtration, distillation, and adsorption, achieving resource recycling. Its core functions include: reducing hazardous waste emissions and mitigating environmental pollution risks; recovering high-value solvents, significantly reducing consumable costs; avoiding direct discharge that violates environmental regulations; and ensuring operational safety. It is an important supporting equipment for green laboratories and industrial production.

[0003] Traditional waste liquid recovery devices often employ a single-stage condensation structure to treat volatile organic waste liquids, using a single condenser to cool and recover the evaporated gas. However, the piping systems of such devices typically use a simple direct-connection design, lacking diversion or enhanced heat exchange structures. This results in excessively long residence times of waste liquid vapors in the pipes, hindering efficient heat exchange and significantly reducing cooling and recovery efficiency. This inefficient heat transfer mechanism not only prolongs the treatment cycle but may also lead to solvent decomposition due to localized overheating, ultimately limiting the overall practicality and safety of the device. Therefore, a waste liquid recovery device is proposed to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a waste liquid recovery device, which aims to improve the problem that the contact area between the cooling pipe and the condenser is small in the prior art, resulting in poor waste liquid treatment effect of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a waste liquid recycling device, including a support platform, a plurality of heating vessels fixedly connected inside the support platform, a heating furnace provided below each of the plurality of heating vessels, a sealing cover provided on the upper surface of each of the plurality of heating vessels, a diversion component installed on one side of the outer wall of the heating vessel, a guiding component installed inside the sealing cover, and a cooling component installed on the upper surface of the support platform;

[0006] The cooling assembly includes a condenser cylinder, the lower surface of which is fixedly connected to the upper surface of a support platform. A condenser is fixedly connected to the upper surface of the condenser cylinder. An annular pipe is fixedly connected inside the condenser cylinder. Multiple branch pipes are fixedly connected to one side of the outer wall of the annular pipe. Multiple conical sleeves are fixedly connected to the outer walls of the multiple branch pipes. A transmission pipe is fixedly connected to one end of each branch pipe, and a liquid recovery tank is fixedly connected to one end of the transmission pipe.

[0007] Furthermore, the diversion assembly includes multiple diversion tubes, one end of each diversion tube is fixedly connected to one side of the outer wall of multiple heating vessels, a liquid distributor is fixedly connected to one side of the outer wall of each diversion tube, and a check valve is fixedly connected to the side of the outer wall of each diversion tube away from the liquid distributor.

[0008] Furthermore, the guiding component includes a fan, the outer wall of which is disposed through the inside of the sealing cover, the outer wall of which is covered with a collection hopper, and an organic waste liquid recovery pipe is fixedly connected to the outer wall of the collection hopper.

[0009] Furthermore, a second discharge pipe is fixedly connected to one side of the outer wall of the heating vessel, a connecting pipe is fixedly connected to the outer wall of the second discharge pipe, a valve is fixedly connected to the outer wall of the connecting pipe, a liquid recovery tank is provided at one end of the connecting pipe, and a quick-release assembly is installed inside the connecting pipe.

[0010] Furthermore, the quick-release assembly includes a ball bearing, the outer wall of which is slidably connected to the inside of a connecting tube. The inside of the connecting tube has a movable groove, and the outer wall of the connecting tube is slidably connected to a sliding sleeve. A protrusion is fixedly connected to one side of the inner wall of the sliding sleeve. A spring is sleeved on the outer wall of the connecting tube, and a connecting tube is slidably connected to the inner wall of the connecting tube.

[0011] Furthermore, one end of the organic waste liquid recovery pipe is fixedly connected to one side of the outer wall of the annular pipe, and the organic waste liquid recovery pipe is used to guide steam.

[0012] Furthermore, a sealing ring is provided inside the connecting pipe, which is used to seal the connection between the connecting pipe and the communicating pipe. A discharge pipe is fixedly connected to one side of the outer wall of both the liquid recovery tank 1 and the liquid recovery tank 2, which is used to guide the discharge of the collected liquid.

[0013] Furthermore, the lower end of the connecting pipe is fixedly connected to the upper surface of the liquid recovery tank two, and the connecting pipe is used for quick disassembly of the liquid recovery tank two.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the waste liquid is transmitted to multiple heating vessels through a first distribution pipe, and the liquid inside the heating vessels is heated. At the same time, the evaporated organic gas is transmitted to the inside of the annular pipe through an organic waste liquid recovery pipe by a fan, and then the gas is transmitted to the inside of a second distribution pipe through the annular pipe. Meanwhile, the inside of the condenser is cooled by a condenser, and the conical sleeve makes efficient contact with the condensate inside the condenser, thereby achieving the effect of rapid cooling of the gas for condensation and easy collection, thus improving the practicality of the device.

[0016] 2. In this utility model, the waste liquid is controlled by the valve to be transmitted to the connecting pipe through the connecting pipe, and then the liquid is transferred to the liquid recovery tank for collection. When the liquid recovery tank needs to be removed for use, the sliding sleeve is pulled to make the protrusion squeeze the spring, thereby causing the ball to disengage from the slot inside the connecting pipe. This makes it easy to remove the connecting pipe and move the liquid recovery tank for use, thus improving the practicality of the device. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a waste liquid recovery device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the heating furnace part of a waste liquid recovery device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the conical sleeve portion of a waste liquid recovery device proposed in this utility model;

[0020] Figure 4 This is a schematic diagram of the spring section of a waste liquid recycling device proposed in this utility model.

[0021] Legend:

[0022] 1. Support platform; 2. Heating vessel; 3. Heating furnace; 4. Sealing cover; 5. Diverter pipe one; 6. Liquid distributor; 7. Check valve; 8. Fan; 9. Collection hopper; 10. Organic waste liquid recovery pipe; 11. Condenser cylinder; 12. Condenser; 13. Circular pipe; 14. Diverter pipe two; 15. Conical sleeve; 16. Transfer pipe; 17. Liquid recovery tank one; 18. Discharge pipe one; 19. Discharge pipe two; 20. Connecting pipe; 21. Valve; 22. Ball bearing; 23. Movable groove; 24. Sliding sleeve; 25. Protrusion; 26. Spring; 27. Sealing ring; 28. Connecting pipe; 29. ​​Liquid recovery tank two. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 , Figure 2 and Figure 3An embodiment of this utility model is provided: a waste liquid recycling device, including a support platform 1, a plurality of heating vessels 2 are fixedly connected inside the support platform 1, a heating furnace 3 is provided below each of the plurality of heating vessels 2, a sealing cover 4 is provided on the upper surface of each of the plurality of heating vessels 2, a diversion component is installed on one side of the outer wall of the 2, a guiding component is installed inside the sealing cover 4, and a cooling component is installed on the upper surface of the support platform 1.

[0025] The cooling assembly includes a condenser cylinder 11, the lower surface of which is fixedly connected to the upper surface of the support platform 1. A condenser 12 is fixedly connected to the upper surface of the condenser cylinder 11. An annular pipe 13 is fixedly connected inside the condenser cylinder 11. Multiple diversion pipes 14 are fixedly connected to one side of the outer wall of the annular pipe 13. Multiple conical sleeves 15 are fixedly connected to the outer wall of the multiple diversion pipes 14. A transmission pipe 16 is fixedly connected to one end of the diversion pipe 14. A liquid recovery tank 17 is fixedly connected to one end of the transmission pipe 16. The diversion assembly includes multiple diversion pipes 5. One end of the multiple diversion pipes 5 is fixedly connected to one side of the outer wall of multiple heating vessels 2. A liquid distributor 6 is fixedly connected to one side of the outer wall of the diversion pipes 5. A check valve 7 is fixedly connected to the side of the outer wall of the diversion pipes 5 away from the liquid distributor 6. The guiding assembly includes a fan 8. The outer wall of the fan 8 is installed inside the sealing cover 4. A collection hopper 9 is provided on the outer wall of the fan 8. An organic waste liquid recovery pipe 10 is fixedly connected to the outer wall of the collection hopper 9.

[0026] Specifically, multiple heating vessels 2 are fixedly connected inside the support platform 1. Each heating vessel 2 has a heating furnace 3 located below it. The combined operation of the heating vessels 2 and the heating furnace 3 provides continuous heat, heating the waste liquid within the heating vessels to promote its volatilization or decomposition. Each heating vessel 2 has a sealing cover 4 on its upper surface. The sealing cover 4 effectively prevents gas leakage during waste liquid volatilization, ensuring the safety of the waste liquid recovery device and guaranteeing gas flow and pressure stability within the system. A guiding component, including a fan 8, is installed inside the sealing cover 4. The fan 8 penetrates the interior of the sealing cover 4, accelerating the collection and transfer of waste liquid gas through airflow. The outer wall cover is equipped with a collection hopper 9, which is used to collect the waste gas or vapor guided by the fan 8, preventing waste gas leakage and ensuring the high efficiency and environmental friendliness of the waste liquid recovery process. An organic waste liquid recovery pipe 10 is fixedly connected to the outer wall of the collection hopper 9, which is used to introduce the waste liquid gas or vapor into the system for further treatment. A cooling assembly is installed on the upper surface of the support platform 1. The cooling assembly includes a condenser cylinder 11. The lower surface of the condenser cylinder 11 is fixedly connected to the upper surface of the support platform 1. The condenser cylinder 11 is used to receive the gas from the waste gas collection system and condense it into liquid waste liquid through the cooling process. A condenser 12 is fixedly connected to the upper surface of the condenser cylinder 11. The condenser 12 reduces the gas temperature by transferring heat during the cooling process. To condense the waste liquid in the gas into a liquid state, an annular pipe 13 is fixedly connected inside the condenser cylinder 11. The design of the annular pipe 13 provides a flow channel for the cooling gas and enhances the condensation effect. Multiple diversion pipes 14 are fixedly connected to one side of the outer wall of the annular pipe 13. The diversion pipes 14 are used to divert the liquid from the annular pipe 13 to different areas to ensure the high efficiency of the liquid recovery process. Multiple conical sleeves 15 are fixedly connected to the outer wall of the multiple diversion pipes 14. The conical sleeves 15 help to adjust the flow direction of the waste liquid and ensure that the waste liquid can flow smoothly into the predetermined recovery container. A transfer pipe 16 is fixedly connected to one end of the diversion pipe 14. The transfer pipe 16 transfers the liquid from the diversion pipe 14 to the liquid recovery tank. To ensure the effective collection and storage of liquid waste, the diversion assembly includes multiple diversion pipes 5, one end of which is fixedly connected to one side of the outer wall of multiple heating vessels 2. The function of the diversion pipes 5 is to divert the waste gas in the heating vessels 2 into different treatment pipes, thereby improving treatment efficiency. A liquid diverter 6 is fixedly connected to one side of the outer wall of the diversion pipes 5. The liquid diverter 6 further diverts the waste gas or steam to multiple areas, optimizing the waste liquid recovery process. A check valve 7 is fixedly connected to the side of the outer wall of the diversion pipes 5 away from the liquid diverter 6. The check valve 7 is used to prevent the backflow of waste liquid or gas, ensuring unidirectional flow of the waste liquid recovery system, preventing pollution and gas leakage, and enhancing the operational safety of the device.

[0027] Reference Figure 1 and Figure 4A discharge pipe 2 is fixedly connected to one side of the outer wall of the heating vessel 2. A connecting pipe 20 is fixedly connected to the outer wall of the discharge pipe 2. A valve 21 is fixedly connected to the outer wall of the connecting pipe 20. A liquid recovery tank 29 is provided at one end of the connecting pipe 20. A quick-release assembly is installed inside the connecting pipe 20. The quick-release assembly includes a ball bearing 22, the outer wall of which is slidably connected to the inside of the connecting pipe 20. A movable groove 23 is provided inside the connecting pipe 20. A sliding sleeve 24 is slidably connected to the outer wall of the connecting pipe 20. A protrusion 25 is fixedly connected to one side of the inner wall of the sliding sleeve 24. A spring 26 is fitted onto the outer wall of the connecting pipe 20. A connecting pipe 28 is slidably connected to the inner wall of the connecting pipe 20; one end of the organic waste liquid recovery pipe 10 is fixedly connected to one side of the outer wall of the annular pipe 13, and the organic waste liquid recovery pipe 10 is used to guide steam; a sealing ring 27 is provided inside the connecting pipe 20, and the sealing ring 27 is used to seal between the connecting pipe 20 and the connecting pipe 28; a discharge pipe 18 is fixedly connected to one side of the outer wall of both the liquid recovery tank 17 and the liquid recovery tank 29, and the discharge pipe 18 is used to guide the discharge of the collected liquid; the lower end of the connecting pipe 28 is fixedly connected to the upper surface of the liquid recovery tank 29, and the connecting pipe 28 is used to quickly disassemble the liquid recovery tank 29.

[0028] Specifically, a discharge pipe 2 19 is fixedly connected to one side of the outer wall of the heating vessel 2. The discharge pipe 2 19 is used to discharge waste gas or liquid from the heating vessel 2, ensuring that the gas or liquid during the heating process can be discharged smoothly without clogging the system and improving waste liquid recovery efficiency. A connecting pipe 20 is fixedly connected to the outer wall of the discharge pipe 2 19. The connecting pipe 20 guides the waste gas or liquid to a further treatment or recovery system. A valve 21 is fixedly connected to the outer wall of the connecting pipe 20. The valve 21 is used to control the flow rate of the liquid or gas. By adjusting the opening and closing of the valve 21, the smooth and precise flow of the liquid or gas is ensured, avoiding excessive leakage or insufficient flow. A liquid recovery tank 29 is installed at one end of the connecting pipe 20. The waste liquid or gas collection bin 29 is used to collect waste liquid or gas transmitted from the connecting pipe 20, ensuring effective recycling of waste liquid and reducing environmental pollution. A quick-release assembly is installed inside the connecting pipe 20 for quick disassembly and assembly, facilitating cleaning and maintenance. The quick-release assembly includes a ball bearing 22, whose outer wall is slidably connected inside the connecting pipe 20. The ball bearing 22 design reduces friction between the connecting pipe 20 and other components, ensuring smooth disassembly. A movable groove 23 is provided inside the connecting pipe 20, allowing the quick-release assembly to be flexibly adjusted, improving disassembly convenience. A sliding sleeve 24 is slidably connected to the outer wall of the connecting pipe 20, and a fixed component is connected to one side of the inner wall of the sliding sleeve 24. The protrusion 25, through its cooperation with the movable groove 23, ensures the stability of the sliding sleeve 24, preventing it from loosening or shifting during operation. A spring 26 is fitted on the outer wall of the connecting pipe 20, providing a restoring force for the quick-release assembly, ensuring that the assembly automatically returns to its original position after disassembly, improving disassembly and installation efficiency. A connecting pipe 28 is slidably connected to the inner wall of the connecting pipe 20, providing a path for liquid or gas flow and ensuring stable flow within the system. One end of the organic waste liquid recovery pipe 10 is fixedly connected to one side of the outer wall of the annular pipe 13. The organic waste liquid recovery pipe 10 is used to guide steam, introducing the waste gas or steam generated during heating into the recovery system, ensuring that the waste gas does not... In case of leakage into the environment, a sealing ring 27 is installed inside the connecting pipe 20. The sealing ring 27 is used to seal between the connecting pipe 20 and the connecting pipe 28 to prevent liquid or gas leakage and improve the system's sealing performance and safety. Both the liquid recovery tank 17 and the liquid recovery tank 29 have a discharge pipe 18 fixedly connected to one side of their outer walls. The discharge pipe 18 is used to guide the discharge of the collected liquid, ensuring that the liquid can be discharged smoothly from the recovery tank and avoiding water accumulation or leakage. The lower end of the connecting pipe 28 is fixedly connected to the upper surface of the liquid recovery tank 29. The connecting pipe 28 is used to quickly disassemble the liquid recovery tank 29 for easy cleaning and maintenance, ensuring that the equipment can operate efficiently for a long time. The connecting pipe 28 is made of flexible hose.

[0029] Working principle: When the recycling device is needed, the waste liquid is first transferred to the vicinity of the liquid distributor 6 through the first distribution pipe 5. The liquid distributor 6 can evenly distribute the waste liquid into each heating vessel 2. At the same time, the check valve 7 can prevent the waste liquid from flowing back. Then, the heating furnace 3 is started to heat the waste liquid inside the heating vessel 2. Then, the blower 8 is started to drive steam into the collection hopper 9 and then into the organic waste liquid recovery pipe 10. Then, the gas is transferred to the annular pipe 13 through the organic waste liquid recovery pipe 10. Then, the gas is evenly distributed into multiple second distribution pipes 14 through the annular pipe 13, so that the gas can increase the contact area with the condensate inside the condenser cylinder 11. Then, the gas is transferred to the annular pipe 14. The condenser 12 cools the coolant inside the condenser cylinder 11, thereby accelerating the steam cooling rate and allowing it to enter the liquid recovery tank 17 for collection. At this time, by opening the valve 21, the residual liquid inside the heater vessel 2 is transferred through the discharge pipe 29 to the connecting pipe 28 inside the connecting pipe 20, and then through the connecting pipe 28 to the liquid recovery tank 29 for collection. When the liquid recovery tank 29 needs to be disassembled for use, by pulling the sliding sleeve 24, the protrusion 25 slides in a limited position on the inner wall of the movable groove 23, thereby compressing the spring 26. Then, the ball bearing 22 disengages from the slot inside the connecting pipe 28, thus facilitating the removal of the connecting pipe 28.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A waste liquid recovery device comprising a support table (1), characterized in that: The support table (1) is internally fixedly connected with a plurality of heating vessels (2), a plurality of the heating vessels (2) are provided below with heating furnaces (3), the upper surfaces of the plurality of heating vessels (2) are provided with sealing covers (4), the outer wall of the heating vessel (2) is installed with a shunt assembly, the sealing cover (4) is internally installed with a guide assembly, and the upper surface of the support table (1) is installed with a cooling assembly. The cooling assembly comprises a condensing cylinder (11), the lower surface of the condensing cylinder (11) is fixedly connected to the upper surface of the support table (1), the upper surface of the condensing cylinder (11) is fixedly connected with a condenser (12), the condensing cylinder (11) is internally fixedly connected with an annular pipeline (13), the outer wall of the annular pipeline (13) is fixedly connected with a plurality of shunt pipes II (14), the outer wall of the plurality of shunt pipes II (14) is fixedly connected with a plurality of tapered sleeves (15), one end of the shunt pipe II (14) is fixedly connected with a transmission pipe (16), and one end of the transmission pipe (16) is fixedly connected with a liquid recovery tank I (17).

2. A waste fluid recovery apparatus according to claim 1, wherein: The shunt assembly comprises a plurality of shunt pipes I (5), one end of the plurality of shunt pipes I (5) is fixedly connected to the outer wall of the plurality of heating vessels (2), the outer wall of the shunt pipe I (5) is fixedly connected with a liquid shunt (6), and the outer wall of the shunt pipe I (5) is fixedly connected with a check valve (7) on the side away from the liquid shunt (6).

3. The waste fluid recovery device of claim 1, wherein: The guide assembly comprises a fan (8), the outer wall of the fan (8) is provided through the inside of the sealing cover (4), the outer wall of the fan (8) is covered with a collecting hopper (9), and the outer wall of the collecting hopper (9) is fixedly connected with an organic waste liquid recovery pipe (10).

4. A waste fluid recovery apparatus according to claim 3, wherein: The outer wall of the heating vessel (2) is fixedly connected with a discharge pipeline II (19), the outer wall of the discharge pipeline II (19) is fixedly connected with a connecting pipe (20), the outer wall of the connecting pipe (20) is fixedly connected with a valve (21), one end of the connecting pipe (20) is provided with a liquid recovery tank II (29), and the connecting pipe (20) is internally installed with a quick release assembly.

5. A waste fluid recovery apparatus according to claim 4, wherein: The quick release assembly comprises a ball (22), the outer wall of the ball (22) is slidingly connected in the connecting pipe (20), the connecting pipe (20) is internally provided with a movable groove (23), the outer wall of the connecting pipe (20) is slidingly connected with a sliding sleeve (24), the inner wall of the sliding sleeve (24) is fixedly connected with a protruding block (25) on one side, the outer wall of the connecting pipe (20) is sleeved with a spring (26), and the inner wall of the connecting pipe (20) is slidingly connected with a communication pipe (28).

6. A waste fluid recovery device according to claim 3, wherein: One end of the organic waste liquid recovery pipe (10) is fixedly connected to the outer wall of the annular pipeline (13) on one side, and the organic waste liquid recovery pipe (10) is used for guiding steam.

7. A waste fluid recovery apparatus according to claim 4, wherein: The connecting pipe (20) is internally provided with a sealing ring (27), the sealing ring (27) is used for sealing between the connecting pipe (20) and the communication pipe (28), and the outer walls of the liquid recovery tank I (17) and the liquid recovery tank II (29) are fixedly connected with a discharge pipeline I (18) on one side, and the discharge pipeline I (18) is used for guiding the discharge of collected liquid.

8. A waste fluid recovery apparatus according to claim 7, wherein: The lower end of the communication pipe (28) is fixedly connected to the upper surface of the liquid recovery tank two (29), and the communication pipe (28) is used for quickly dismounting the liquid recovery tank two (29).