An evaporator and condenser cleaning control and maintenance device

Abstract

This utility model relates to the technical field of cleaning and maintenance devices, and discloses a cleaning control and maintenance device for evaporators and condensers, including a dosing tank and a mixing agent tank, with a connecting guide pipe between the dosing tank and the mixing agent tank. This utility model, by setting the bottom ends of the flushing outlet pipe and the flushing return pipe, can seamlessly connect to the flooded evaporator and condenser equipment of a water-cooled chiller unit. During cleaning, there is no need to disassemble or shut down the evaporator and condenser, resulting in high cleaning adaptability. The flushing outlet pipe and the flushing return pipe form a circulation loop when connected to the evaporator and condenser for flushing, facilitating flushing. If the pH value of the mixing agent tank is too low after flushing, the dosing tank can automatically replenish the agent, making the device highly targeted and adaptable, with high cleaning efficiency and quality, low maintenance costs, and improved heat exchange efficiency of the water-cooled unit, achieving energy saving.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning and maintenance devices, and in particular to a cleaning control and maintenance device for evaporators and condensers. Background Technology

[0002] In the cooling systems of large data centers, the flooded evaporators and condensers of water-cooled chillers are key components ensuring efficient system operation. They primarily function in cooling mode. However, due to the long-term circulation of cooling water, bacteria, algae, and other microorganisms easily proliferate in the water. Simultaneously, minerals such as calcium and magnesium in the water gradually precipitate, leading to scale formation inside the condenser. This scale and microbial fouling significantly reduce the heat exchange efficiency of the equipment, increase energy consumption, and may even shorten its lifespan. Therefore, regular cleaning of the evaporators and condensers is crucial. Evaporator and condenser cleaning, control, and maintenance equipment is specifically designed for cleaning, condition monitoring, and maintenance control of this type of equipment.

[0003] Since data center cooling water systems are mostly open systems, bacteria and algae easily grow in the cooling water, leading to scale buildup inside the condenser and affecting heat exchange efficiency. This necessitates cleaning and maintenance of the pipes in the flooded evaporators and condensers of the chiller units. However, this process requires disassembling the evaporators and condensers for cleaning, which is impractical and lacks convenience. Improper disassembly can damage the sealing performance and structural integrity of the equipment, creating potential safety hazards such as leaks and abnormal pressure in subsequent system operation. Furthermore, manual cleaning is labor-intensive, resulting in relatively high maintenance costs and poor cleaning efficiency and quality. Therefore, we propose an evaporator and condenser cleaning control and maintenance device to address these issues. Utility Model Content

[0004] In response to the problems raised, this utility model provides an evaporator and condenser cleaning control and maintenance device to solve the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An evaporator and condenser cleaning control and maintenance device includes a dosing tank and a mixing agent tank, wherein a connecting guide pipe is connected between the dosing tank and the mixing agent tank;

[0007] The connecting guide pipe is equipped with a drug injection pump, a drug injection filter, and a drug injection electric valve. The outside of the mixing agent tank is equipped with a connected flushing water outlet pipe and a flushing water return pipe. The flushing water outlet pipe is equipped with a booster flushing pump, and the flushing water return pipe is equipped with a backwash impurity filter.

[0008] Both the dosing tank and the mixing tank are equipped with pH detectors.

[0009] Preferably, both the dosing tank and the mixing tank are equipped with level gauges, and both the dosing tank and the mixing tank are equipped with inlet / outlet water control pipes at the bottom of their sides.

[0010] Preferably, the two ends of the connecting guide pipe extend through and to the inner bottom of the dosing tank and the mixing agent tank, respectively, and the dosing tank injects medicine into the mixing agent tank through the connecting guide pipe.

[0011] Preferably, the mixing tank is equipped with a temperature monitoring controller and an electric heater, which are electrically connected.

[0012] Preferably, the top ends of the flushing outlet pipe and the flushing return pipe are respectively installed on the top and bottom of the outside of the mixing agent tank. The bottom ends of the flushing outlet pipe and the flushing return pipe are fixedly installed with flushing installation heads. One-way loop valves are correspondingly provided on the flushing outlet pipe and the flushing return pipe. A loop pressure measuring gauge is provided on the flushing return pipe.

[0013] Preferably, a flow pressure gauge is provided on the connecting flow guide pipe, and the flow pressure gauge is located on the side of the connecting flow guide pipe near the mixing agent tank.

[0014] Preferably, the backwash impurity filter includes a filter box and a filter element. The filter box is installed in the middle of the backwash water pipeline. Both ends of the filter box are threadedly sealed to the backwash water pipeline. The filter element is filled and installed inside the filter box.

[0015] Preferably, the drug injection filter has threaded mounting ends on both sides, and the two threaded mounting ends are respectively installed in the middle of the connecting guide pipe. The drug injection filter is provided with an impurity filter element inside, and the impurity filter element is installed between the two threaded mounting ends.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. This evaporator and condenser cleaning control and maintenance equipment connects to a mixing agent tank via flushing outlet and return water pipes. The bottom ends of these pipes can seamlessly connect to the flooded evaporator and condenser of a water-cooled chiller unit, allowing flushing without disassembly. The flushing outlet pipe uses a booster pump to extract the chemical solution from the mixing agent tank and pressurize it for flushing into the pipes of the evaporator and condenser, cleaning residual scale, algae, and bacteria. The chemical solution is then guided from the other end to the return water pipe, where it and the scale flow back into the mixing agent tank, creating a circulating flushing effect. This circulating flushing provides good cleaning results, conserves chemical solution, and allows for cleaning without disassembling the evaporator and condenser. It is highly targeted and adaptable, saves on chemical solution, and has low maintenance costs.

[0018] 2. This evaporator and condenser cleaning control and maintenance equipment connects the dosing tank and the mixing agent tank via a connecting pipeline. This pipeline, in conjunction with a pump, draws the cleaning solution from the dosing tank into the mixing agent tank. A filter removes impurities, and an electric valve controls the on / off operation. Both the dosing tank and the mixing agent tank are equipped with pH detectors. During cleaning in the mixing agent tank, the pH detectors monitor the pH value of the solution in real time. If the pH value is too low, the dosing tank can control the dosing to maintain a higher pH level in the mixing agent tank, improving cleaning quality and efficiency. The equipment boasts a high degree of automation and cleaning efficiency, reducing maintenance costs. It allows for automated solution replenishment, resulting in high cleaning efficiency and quality with low maintenance costs. Attached Figure Description

[0019] Figure 1 This utility model provides a frontal perspective three-dimensional schematic diagram of an evaporator and condenser cleaning control and maintenance device;

[0020] Figure 2 This utility model provides a front view sectional perspective diagram of an evaporator and condenser cleaning control and maintenance device;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This utility model provides a top-view perspective view of an evaporator and condenser cleaning control and maintenance device;

[0023] Figure 5 This utility model provides a top-view sectional perspective view of an evaporator and condenser cleaning control and maintenance device.

[0024] Figure 6 This is a frontal perspective three-dimensional schematic diagram of the connection structure of the connecting guide pipe, the injection pump and the injection filter of this utility model.

[0025] In the diagram: 1. Dosing tank; 2. Mixing agent tank; 3. Connecting guide pipe; 301. Guide pressure gauge; 4. Injection pump; 5. Injection filter; 501. Threaded mounting end; 502. Impurity filter element; 6. Injection electric valve; 7. Flushing outlet pipe; 8. Flushing return pipe; 801. Flushing mounting end; 802. One-way loop valve; 803. Loop pressure gauge; 9. Booster flushing pump; 10. Backwash impurity filter; 101. Filter box; 102. Filter element; 11. pH detector; 12. Level gauge; 13. Inlet / outlet water control pipe; 14. Temperature monitoring controller; 15. Electric heater. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Please see Figures 1-6 An evaporator and condenser cleaning control and maintenance device includes a dosing tank 1 and a mixing agent tank 2, with a connecting guide pipe 3 connecting the dosing tank 1 and the mixing agent tank 2.

[0029] The connecting guide pipe 3 is equipped with a drug injection pump 4, a drug injection filter 5, and a drug injection electric valve 6. The outside of the mixing agent tank 2 is equipped with a connected flushing water outlet pipe 7 and a flushing water return pipe 8. The flushing water outlet pipe 7 is equipped with a booster flushing pump 9, and the flushing water return pipe 8 is equipped with a backwash impurity filter 10.

[0030] Both the dosing tank 1 and the mixing tank 2 are equipped with pH detectors 11.

[0031] The beneficial effects of this solution are as follows: A connecting pipe 3 connects the dosing tank 1 and the mixing tank 2. The connecting pipe 3, in conjunction with the injection pump 4, draws the liquid medicine from the dosing tank 1 and introduces it into the mixing tank 2. The injection filter 5 filters impurities. The injection electric valve 6 acts as an on / off control. Both the dosing tank 1 and the mixing tank 2 are equipped with pH detectors 11. When the pH value of the mixing tank 2 is too low after rinsing with liquid medicine, the dosing tank 1 can automatically replenish the liquid medicine, which facilitates the measurement and control of the pH value of the liquid medicine.

[0032] The side of the mixing agent tank 2 is equipped with a flushing outlet pipe 7 and a flushing return pipe 8. The bottom ends of the flushing outlet pipe 7 and the flushing return pipe 8 can be seamlessly connected to the flooded evaporator and condenser of the water-cooled chiller unit. During cleaning, there is no need to disassemble or shut down the evaporator and condenser. The cleaning adaptability is high. The flushing outlet pipe 7 is pumped out of the mixing agent tank 2 by the booster flushing pump 9 and pressurized to flush into the pipes of the evaporator and condenser to flush away the scale and algae bacteria remaining in the pipes. The liquid is guided from the other end to the flushing return pipe 8. The liquid and dirt flow back into the mixing agent tank 2 to form a circulating flushing effect. The backwash impurity filter 10 filters and guides the backflow of impurities and dirt, which is convenient for flushing. The subsequent cleaning and maintenance are convenient, improving the cleaning quality and efficiency. The automation level and cleaning efficiency are high, and the maintenance cost is reduced.

[0033] This device allows for cleaning without disassembling the evaporator and condenser, offering good targeting and adaptability. It also minimizes the risk of damaging components during later maintenance, making it convenient to use. The cleaning efficiency and quality are high, and the maintenance cost is low. This improves the heat exchange efficiency of the water-cooled unit, achieving the goal of energy saving.

[0034] Furthermore, both the dosing tank 1 and the mixing tank 2 are equipped with level gauges 12, and both the dosing tank 1 and the mixing tank 2 are equipped with inlet and outlet water control pipes 13 at the bottom of their sides.

[0035] Specifically, both the dosing tank 1 and the mixing tank 2 are equipped with a level gauge 12. The level gauge 12 can monitor the liquid level in the tank in real time, so that the liquid can be replenished or stopped in time when it is too high or too low. It is convenient to use. The inlet and outlet water control pipe 13 can conveniently replenish or drain the liquid in the dosing tank 1 and the mixing tank 2. It is convenient to replenish or drain the liquid and easy to use.

[0036] Furthermore, the two ends of the connecting guide pipe 3 extend through and extend to the bottom of the dosing tank 1 and the mixing agent tank 2 respectively, and the dosing tank 1 injects the agent into the mixing agent tank 2 through the connecting guide pipe 3;

[0037] Specifically, the connecting pipe 3 connects the dosing tank 1 and the mixing tank 2. When the liquid in the mixing tank 2 is deteriorated or the pH value decreases, the dosing tank 1 and the liquid inside can be injected into the mixing tank 2 through the connecting pipe 3. The dosing tank 1 injects the liquid into the mixing tank 2 through the connecting pipe 3. The liquid injection is convenient and the matching effect is good.

[0038] Furthermore, the mixing tank 2 is equipped with a temperature monitoring controller 14 and an electric heater 15, which are electrically connected.

[0039] Specifically, the mixing tank 2 is equipped with a temperature monitoring controller 14 and an electric heater 15. The temperature monitoring controller 14 can monitor the temperature of the liquid in the mixing tank 2. When the temperature is too low, the electric heater 15 can heat the liquid, thereby enhancing the cleaning effect when cleaning the pipes, facilitating the rapid cleaning of scale and sludge inside the evaporator and condenser, improving heat exchange efficiency, and achieving the purpose of energy saving.

[0040] Furthermore, the top ends of the flushing outlet pipe 7 and the flushing return pipe 8 are respectively installed on the top and bottom of the outside of the mixing agent tank 2. The bottom ends of the flushing outlet pipe 7 and the flushing return pipe 8 are fixedly installed with flushing installation end 801. One-way loop valves 802 are correspondingly provided on the flushing outlet pipe 7 and the flushing return pipe 8. A loop pressure measuring gauge 803 is provided on the flushing return pipe 8.

[0041] Specifically, the top ends of the flushing outlet pipe 7 and the flushing return pipe 8 are respectively installed at the top and bottom of the outside of the mixing agent tank 2, allowing for the separate injection and return of the chemical solution, ensuring stable chemical solution circulation. Both the flushing outlet pipe 7 and the flushing return pipe 8 have flushing installation ends 801 fixedly installed at their bottom ends. For the internal pipe ends of the evaporator and condenser, two flushing installation ends 801 can be used to seal the two ends, facilitating internal pipe flushing without disassembly. Flushing is simple and convenient. Both the flushing outlet pipe 7 and the flushing return pipe 8 are equipped with one-way loop valves 802, ensuring good flow stability and preventing backflow. The flushing return pipe 8 is equipped with a loop pressure gauge 803, which prevents backflow during flushing. When blockage occurs in the pipe, the loop pressure gauge 803 allows for direct pressure measurement, facilitating timely detection of blockages and other abnormalities, making it convenient to use.

[0042] Furthermore, a flow pressure gauge 301 is provided on the connecting flow pipe 3, and the flow pressure gauge 301 is located on the side of the connecting flow pipe 3 near the mixing agent tank 2;

[0043] Specifically, a pressure gauge 301 is installed on the connecting flow guide pipe 3, which can monitor the pressure changes in the connecting flow guide pipe 3 in real time, prevent excessive pressure from damaging the pipe body and equipment, and has good practicality.

[0044] Furthermore, the backwash impurity filter 10 includes a filter box 101 and a filter element 102. The filter box 101 is installed in the middle of the flushing return water pipe 8. Both ends of the filter box 101 are threadedly sealed to the flushing return water pipe 8. The filter element 102 is filled and installed inside the filter box 101.

[0045] Specifically, the filter box 101 serves as an installation guide, and the filter element 102 inside the filter box 101 plays a good role in filtering impurities, preventing excessive impurities from flowing back into the mixing agent tank 2 and causing pollution, and facilitating the discharge of filtered impurities.

[0046] Furthermore, the injection filter 5 has threaded mounting ends 501 on both sides, and both threaded mounting ends 501 are installed in the middle of the connecting guide pipe 3. The injection filter 5 has an impurity filter element 502 inside, which is installed between the two threaded mounting ends 501.

[0047] Specifically, the injection filter 5 has threaded mounting ends 501 on both sides, which makes it easy to install the injection filter 5 on the connecting guide pipe 3 through the two threaded mounting ends 501. The installation and disassembly are convenient. In addition, the injection filter 5 is equipped with an impurity filter element 502 inside, which plays a role in filtering impurities in the medicine liquid, preventing excessive impurities and ensuring stable operation.

[0048] How to use and how to work this device:

[0049] By setting up a dosing tank 1 and a mixing tank 2, the corresponding dosing and mixing of the medicine can be carried out. After the dosing tank 1 is filled with medicine, the connecting guide pipe 3, together with the injection pump 4, draws the medicine from the dosing tank 1 and introduces it into the mixing tank 2. During the introduction process, the mixing operation is carried out. During the introduction process, the injection filter 5 can filter impurities. The injection electric valve 6 plays an on / off control role, which makes it easy to stably mix the medicine from the dosing tank 1 into the mixing tank 2. The mixing is convenient. Both the dosing tank 1 and the mixing tank 2 are equipped with pH detectors 11 to measure and control the pH value of the medicine in the tank. The medicine remains stable when flushing the pipeline.

[0050] The side of the mixing agent tank 2 is equipped with a flushing outlet pipe 7 and a flushing return pipe 8. The bottom ends of the flushing outlet pipe 7 and the flushing return pipe 8 can be seamlessly connected to the flooded evaporator and condenser of the water-cooled chiller unit. During cleaning, there is no need to disassemble or shut down the evaporator and condenser. The cleaning adaptability is high. The flushing outlet pipe 7 is pumped out of the mixing agent tank 2 by the booster flushing pump 9 and pressurized to flush into the pipes of the evaporator and condenser to flush away the scale and algae bacteria remaining in the pipes. The liquid is guided from the other end to the flushing return pipe 8. The liquid and dirt flow back into the mixing agent tank 2 to form a circulating flushing effect, which can complete the rapid flushing cleaning effect. During the return flow, the flushing return pipe 8 is filtered and guided by the return impurity filter 10. The filter is easy to adapt and does not need to be disassembled during the flushing process. It is easy to flush and convenient for subsequent cleaning and maintenance.

[0051] Both the dosing tank 1 and the mixing tank 2 are equipped with pH detectors 11. When the mixing tank 2 is used for mixing and cleaning, the pH detectors 11 can monitor the pH value of the solution in real time. When the pH value is too low, the dosing tank 1 can control the dosing to keep the solution in the mixing tank 2 at a high value, thereby improving the cleaning quality and efficiency. The system is highly automated and efficient, and reduces maintenance costs.

[0052] Both the dosing tank 1 and the mixing tank 2 are equipped with level gauges 12. The level gauges 12 can monitor the liquid level in the tank in real time, so that the liquid can be replenished or stopped in time when it is too high or too low. It is convenient to use. The inlet and outlet water control pipes 13 can conveniently replenish or drain the liquid in the dosing tank 1 and the mixing tank 2. It is convenient to replenish or drain the liquid and easy to use.

[0053] The connecting guide pipe 3 connects the dosing tank 1 and the mixing tank 2. When the liquid in the mixing tank 2 is dry or the pH value decreases, the dosing tank 1 and the liquid inside can be injected into the mixing tank 2 through the connecting guide pipe 3. The dosing tank 1 injects the liquid into the mixing tank 2 through the connecting guide pipe 3. The liquid injection is convenient and the matching effect is good.

[0054] The mixing tank 2 is equipped with a temperature monitoring controller 14 and an electric heater 15. The temperature monitoring controller 14 can monitor the temperature of the liquid in the mixing tank 2. When the temperature is too low, the electric heater 15 can heat the liquid, thereby enhancing the cleaning effect when cleaning the pipes, facilitating the rapid cleaning of scale and sludge inside the evaporator and condenser, improving heat exchange efficiency, and achieving the purpose of energy saving.

[0055] The top ends of the flushing outlet pipe 7 and the flushing return pipe 8 are respectively installed at the top and bottom of the outside of the mixing agent tank 2, allowing for the separate injection and return of the chemical solution, ensuring stable chemical solution circulation. Both the bottom ends of the flushing outlet pipe 7 and the flushing return pipe 8 are fixedly equipped with flushing installation heads 801. For the internal pipe ends of the evaporator and condenser, two flushing installation heads 801 can be used to seal the two ends, facilitating internal pipe flushing without disassembly. Flushing is simple and convenient. Both the flushing outlet pipe 7 and the flushing return pipe 8 are equipped with corresponding one-way loop valves 802, ensuring good flow stability and preventing backflow. The flushing return pipe 8 is equipped with a loop pressure gauge 803, which prevents backflow during flushing. When blockage occurs in the pipe, the loop pressure gauge 803 allows for direct pressure measurement, facilitating timely detection of blockages and other abnormalities, making it convenient to use.

[0056] The connecting guide pipe 3 is equipped with a guide pressure gauge 301, which can monitor the pressure changes in the connecting guide pipe 3 in real time, prevent excessive pressure from damaging the pipe body and equipment, and has good practicality;

[0057] The backwash impurity filter 10 includes a filter box 101 and a filter element 102. The filter box 101 serves as a guide for the flow, and the filter element 102 inside the filter box 101 provides a good impurity filtration effect, preventing excessive impurities from flowing back into the mixing agent tank 2 and causing pollution. The impurities are also easily filtered and discharged.

[0058] The injection filter 5 has threaded mounting ends 501 on both sides, which makes it easy to install the injection filter 5 on the connecting guide pipe 3 through the two threaded mounting ends 501. The installation and disassembly are convenient. The injection filter 5 is equipped with an impurity filter element 502 inside, which plays a role in filtering impurities in the liquid medicine, preventing excessive impurities and ensuring stable operation.

[0059] This device allows for cleaning without disassembling the evaporator and condenser, offering good targeting and adaptability. It also minimizes the risk of damaging components during later maintenance, making it convenient to use, with high cleaning efficiency and quality, and low maintenance costs.

[0060] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A control maintenance equipment for cleaning of evaporator and condenser comprising a dosing tank (1) and a mixing agent tank (2), characterized in that: A connecting pipe (3) connects the dosing tank (1) and the mixing tank (2); The connecting guide pipe (3) is equipped with a drug injection pump (4), a drug injection filter (5), and a drug injection electric valve (6). The outside of the mixing agent tank (2) is equipped with a flushing water outlet pipe (7) and a flushing water return pipe (8). The flushing water outlet pipe (7) is equipped with a booster flushing pump (9), and the flushing water return pipe (8) is equipped with a backwash impurity filter (10). Both the dosing tank (1) and the mixing tank (2) are equipped with pH detectors (11).

2. A control and maintenance apparatus for cleaning of an evaporator and condenser according to claim 1, characterized in that The dosing tank (1) and the mixing tank (2) are both equipped with level gauges (12), and the bottom of the side of the dosing tank (1) and the mixing tank (2) are both equipped with inlet and outlet water control pipes (13).

3. A control and maintenance apparatus for cleaning of an evaporator and condenser according to claim 1, characterized in that: The two ends of the connecting guide pipe (3) extend through and to the bottom of the dosing tank (1) and the mixing agent tank (2), respectively. The dosing tank (1) injects medicine into the mixing agent tank (2) through the connecting guide pipe (3).

4. A control and maintenance apparatus for cleaning of an evaporator and condenser according to claim 1, characterized in that: The mixing tank (2) is equipped with a temperature monitoring controller (14) and an electric heater (15) inside, and the temperature monitoring controller (14) and the electric heater (15) are electrically connected.

5. A control and maintenance apparatus for cleaning of evaporators and condensers according to claim 1, characterized in that: The top ends of the flushing outlet pipe (7) and the flushing return pipe (8) are respectively installed on the top and bottom of the outside of the mixing agent tank (2). The bottom ends of the flushing outlet pipe (7) and the flushing return pipe (8) are fixedly installed with flushing installation end (801). The flushing outlet pipe (7) and the flushing return pipe (8) are respectively provided with one-way loop valves (802). The flushing return pipe (8) is provided with a loop pressure measuring gauge (803).

6. A control and maintenance apparatus for cleaning of evaporators and condensers according to claim 1, characterized in that: The connecting flow guide pipe (3) is equipped with a flow guide pressure gauge (301), which is located on the side of the connecting flow guide pipe (3) near the mixing agent tank (2).

7. The evaporator and condenser cleaning control and maintenance equipment according to claim 1, characterized in that: The backwash impurity filter (10) includes a filter box (101) and a filter element (102). The filter box (101) is installed in the middle of the flushing return water pipeline (8). Both ends of the filter box (101) are threadedly sealed to the flushing return water pipeline (8). The filter element (102) is filled and installed inside the filter box (101).

8. The evaporator and condenser cleaning control and maintenance equipment according to claim 2, characterized in that: The drug injection filter (5) has threaded mounting ends (501) on both sides. Both threaded mounting ends (501) are installed in the middle of the connecting guide pipe (3). The drug injection filter (5) is provided with an impurity filter element (502) inside. The impurity filter element (502) is installed between the two threaded mounting ends (501).

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