Water purification equipment capable of guaranteeing total number of bacteria in endoscope

Abstract

The invention discloses water purification equipment capable of guaranteeing the total number of endoscope bacteria, and relates to the technical field of water purification equipment.The water purification equipment comprises a water inlet and a raw water pump, the water inlet end of the raw water pump communicates with the water inlet, and the water outlet end of the raw water pump communicates with a multi-medium filtering tank; a water pressure and flow controller I and a water inlet electromagnetic valve are mounted at the raw water pump. A raw water pump, a multi-medium filtering tank, a softening filtering tank, a security filter, a reverse osmosis membrane group, a pure water tank and other parts are arranged, and a precision filter I, an ozone generator, a precision filter II and the like are arranged between the pure water tank and a water using point, so that water can be disinfected while being stored in the pure water tank for a long time; and the ultraviolet disinfection device and the ultrafiltration device are arranged below the water using point, so that the total bacterial count of pure water can reach the endoscope water standard when the pure water comes out from the water using point after long-distance conveying, cross infection of the endoscope is avoided, the structural design is reasonable, and the disinfection efficiency of the endoscope water is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pure water equipment, in particular to pure water equipment for ensuring the total number of endoscopic bacteria. Background Art

[0002] Pure water equipment that guarantees the total bacterial count of endoscopes plays a vital role in modern medicine, especially during endoscopic examinations and treatments. Endoscopes are important medical tools for diagnosing and treating various diseases, but because they are in direct contact with the patient's body cavity, the presence of any bacteria or contaminants may lead to infection risks. Therefore, it is crucial to ensure the quality of water used in the cleaning and disinfection of endoscopes. Pure water equipment includes pretreatment, reverse osmosis (RO), ultraviolet disinfection and subsequent treatment, which can provide high-purity water to ensure that the total bacterial count is significantly lower than medical standards. In hospitals and clinics, the use of this high-quality pure water can not only ensure the cleanliness and safety of endoscopes, but also reduce the risk of cross-infection, thereby improving patient safety and treatment effects.

[0003] Pure water equipment is usually disinfected by ultraviolet radiation and ozone disinfection, but in this process, the water is in a flowing state, so the ultraviolet radiation time is insufficient, resulting in low disinfection efficiency of pure water treatment equipment. In addition, pure water may suffer from secondary contamination during storage and long-distance transportation, leading to bacterial regeneration. Summary of the invention

[0004] The present invention provides a pure water device for ensuring the total bacterial count of an endoscope, which has the beneficial effect of ensuring that the total bacterial count in pure water is lower than a standard value during storage and long-distance transportation.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pure water device for ensuring the total number of bacteria in an endoscope, comprising a water inlet and a raw water pump, wherein the water inlet end of the raw water pump is connected to the water inlet, the water outlet end of the raw water pump is connected to a multi-media filter tank, and a water pressure and water flow controller 1 and a water inlet solenoid valve are installed at the raw water pump, wherein the water pressure and water flow controller 1 is used to control the water pressure of the water inlet of the raw water pump;

[0007] A softening filter tank is installed at the water outlet of the multi-media filter tank. An automatic control valve is installed on the top of the multi-media filter tank. The automatic control valve is used to control the state of the multi-media filter tank. A softening control valve is installed on the top of the softening filter tank. The softening control valve is used to control the state of the softening filter tank.

[0008] A security filter is installed at the water outlet of the softening filter tank. A high-pressure pump is installed at the water outlet of the security filter. A low-pressure switch is installed on the high-pressure pump. The low-pressure switch is used to control the low-pressure protection function of the high-pressure pump.

[0009] A reverse osmosis membrane group is installed at the water outlet of the high-pressure pump, and a concentrated water regulating valve and a flushing solenoid valve are also installed at the water inlet of the reverse osmosis membrane group;

[0010] A pure water tank is installed at the water outlet end of the reverse osmosis membrane group. A water supply conductivity detector and a water supply pump are installed at the water outlet end of the pure water tank in sequence. A water pressure and water flow controller 2 is installed at the water supply pump. A precision filter 1 is installed at the water outlet end of the water supply pump. The water outlet end of the precision filter 1 is connected in parallel with several water use points. Ultraviolet disinfection and ultrafiltration are installed between the precision filter 1 and the water use points. An ozone generator is installed on the pure water tank. The water outlet end of the precision filter 1 is connected to the pure water tank through a pipeline, and a precision filter 2 is installed on the pipeline.

[0011] Optionally, the ultraviolet disinfection and the ultrafiltration are integrated and installed below the water use point.

[0012] Optionally, a liquid level rod is installed in the pure water tank, and a respirator is installed on the top of the pure water tank.

[0013] Optionally, the softening filter tank is connected to a salt box via a pipeline.

[0014] Optionally, a pressure gauge 1 is installed on the top of the security filter, and the pressure gauge 1 is used to detect the operating pressure change of the security filter. A pressure gauge 2 is installed at the high-pressure pump, and the pressure gauge 2 is used to detect the pressure change at the water outlet of the high-pressure pump. A pressure gauge 3 is installed at the reverse osmosis membrane group, and the pressure gauge 3 is used to detect the pressure change of the concentrated water when the reverse osmosis membrane group is running.

[0015] Optionally, a concentrated water flow meter and a pure water flow meter are installed at the reverse osmosis membrane group.

[0016] Optionally, a conductivity detector is installed at the water inlet end of the pure water tank.

[0017] Optionally, a check valve is installed between the pure water tank and the reverse osmosis membrane group.

[0018] Optionally, a ball valve 1 is installed at the water outlet end of the pure water tank, and a ball valve 2 is installed at the water outlet end of the precision filter 1.

[0019] Optionally, a return ball valve is installed at the water inlet end of the second precision filter.

[0020] The present invention provides a pure water device for ensuring the total number of bacteria in an endoscope, which has the following beneficial effects compared with the prior art:

[0021] By setting up components such as raw water pumps, multi-media filter tanks, softening filter tanks, security filters, reverse osmosis membrane groups, pure water tanks, etc., precision filter one, ozone generator, precision filter two, etc. are installed between the pure water tank and the water use point. Water can be disinfected while being stored in the pure water tank for a long time, and ultraviolet disinfection and ultrafiltration are installed below the water use point. In this way, even after long-distance transportation, the total number of bacteria in the pure water can still meet the endoscope water standard when it comes out of the water use point, avoiding cross infection of the endoscope. The structural design is reasonable, which improves the disinfection efficiency of endoscope water. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A flow chart showing the direction of water flow when the present invention is used;

[0023] Figure 2 For the present invention Figure 1 Flowchart of the front-end part;

[0024] Figure 3 For the present invention Figure 1 The middle part flow chart of

[0025] Figure 4 For the present invention Figure 1 The backend part of the flow chart.

[0026] In the figure: 1. Water inlet; 2. Raw water pump; 3. Water pressure and flow controller 1; 4. Water inlet solenoid valve; 5. Multi-media filter tank; 6. Automatic control valve; 7. Softening filter tank; 8. Softening control valve; 9. Salt box; 10. Security filter; 11. Pressure gauge 1; 12. Low pressure switch; 13. High pressure pump; 14. Pressure gauge 2; 15. Reverse osmosis membrane group; 16. Pressure gauge 3; 17. Concentrated water flow meter; 18. Concentrated water regulating valve; 19. Flushing solenoid valve; 20. Check valve; 21. Conductivity tester; 22. Pure water flow meter; 23. Pure water tank; 24. Ball valve one; 25. Water supply conductivity tester; 26. Water supply pump; 27. Water pressure and water flow controller two; 28. Precision filter one; 29. ​​Ball valve two; 30. Ultraviolet disinfection; 31. Ultrafiltration; 32. Return ball valve; 33. Precision filter two; 34. Respirator; 35. Liquid level rod; 36. Ozone generator. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 4The present invention provides a technical solution: a pure water device for ensuring the total number of bacteria in an endoscope, comprising a water inlet 1 and a raw water pump 2, the water inlet end of the raw water pump 2 is connected to the water inlet 1, the water outlet end of the raw water pump 2 is connected to a multi-media filter tank 5, a water pressure and water flow controller 3 and a water inlet solenoid valve 4 are installed at the raw water pump 2, and the water pressure and water flow controller 3 is used to control the water pressure of the water inlet of the raw water pump 2;

[0029] A softening filter tank 7 is installed at the water outlet of the multi-media filter tank 5. An automatic control valve 6 is installed on the top of the multi-media filter tank 5. The automatic control valve 6 is used to control the state of the multi-media filter tank 5. A softening control valve 8 is installed on the top of the softening filter tank 7. The softening control valve 8 is used to control the state of the softening filter tank 7.

[0030] The safety filter 10 is installed at the water outlet of the softening filter tank 7. A high-pressure pump 13 is installed at the water outlet of the safety filter 10. A low-pressure switch 12 is installed on the high-pressure pump 13. The low-pressure switch 12 is used to control the low-pressure protection function of the high-pressure pump 13.

[0031] The reverse osmosis membrane group 15 is installed at the water outlet of the high-pressure pump 13, and the water inlet of the reverse osmosis membrane group 15 is also installed with a concentrated water regulating valve 18 and a flushing solenoid valve 19;

[0032] A pure water tank 23 is installed at the water outlet end of the reverse osmosis membrane group 15. A water supply conductivity detector 25 and a water supply pump 26 are installed at the water outlet end of the pure water tank 23 in sequence. A water pressure and water flow controller 27 is installed at the water supply pump 26. A precision filter 28 is installed at the water outlet end of the water supply pump 26. The water outlet end of the precision filter 28 is connected in parallel with several water use points. Ultraviolet disinfection 30 and ultrafiltration 31 are installed between the precision filter 28 and the water use points. An ozone generator 36 is installed on the pure water tank 23. The water outlet end of the precision filter 28 is connected to the pure water tank 23 through a pipeline, and a precision filter 2 33 is installed on the pipeline.

[0033] The water inlet 1 can be municipal tap water, groundwater, etc. The water pressure and water flow controller 3 provides constant pressure control for the raw water pump 2. The water inlet solenoid valve 4 works synchronously with the raw water pump 2 to effectively control the inflow of raw water. The raw water pump 2 pumps the water from the water inlet 1 through a pipeline into the multi-media filter tank 5. The multi-media filter tank 5 is filled with quartz sand and activated carbon. The quartz sand filter material filters the water quality and blocks large particles and suspended substances in the water. It is mainly used for those fine suspended substances and can also be used to remove In addition to manganese and iron in water, activated carbon can absorb residual chlorine that cannot be removed in the previous stage filtration, which can effectively ensure the service life of the subsequent equipment, improve the water quality, and prevent pollution, especially preventing the free residual oxygen poisoning pollution of the subsequent reverse osmosis membrane, ion exchange resin, etc. At the same time, it also absorbs small molecular organic matter and other pollutants leaked from the previous stage, and has a more obvious adsorption and removal effect on odor, colloids, pigments, heavy metal ions, etc. in water, and also has the effect of reducing COD, ensuring SDI <5, TOC <2. pm, the water after the multi-media filter tank 5 enters the softening filter tank 7, which contains softening resin. The softening water resin is a plastic micro-bead used for water treatment, which can remove hardness ions in water, such as calcium and magnesium, making the water softer and more suitable for use. In this process, the automatic control valve 6 is used to control the normal operation state, forward washing state and backwashing state of the water in the multi-media filter tank 5, and the softening control valve 8 is used to control the normal operation state, forward washing state and backwashing state of the water in the softening filter tank 7. The water filtered by the softening filter tank 7 will enter the security filter 10. The security filter 10 is a filter that uses a filter element as a filter medium and uses pressure to separate liquid and solid. The liquid to be filtered is pressed into the inlet of the security filter 10, and the filter element passes through the filter layer from the outside to the inside and is filtered into a clear liquid, and then discharged from the outlet of the security filter 10. Impurities are trapped in the deep layer and surface of the filter element. It is mainly used to filter solid particles of 0.5 to 10 μm or particles larger than 0.5μm but the particles are non-rigid, easy to deform, and the viscosity between particles or between particles and filter media is high. The filtered water enters the high-pressure pump 13. At this time, the low-pressure switch 12 controls the low-pressure protection function of the high-pressure pump 13. The high-pressure pump 13 pumps water into the reverse osmosis membrane group 15. With the selective interception effect of the semi-permeable membrane, the impurities such as dissolved salts, colloids, bacteria, viruses, bacterial endotoxins and most organic matter in the water are effectively removed. The main separation object of the reverse osmosis membrane is the ion range in the solution. No chemicals are required and the salt in the water can be effectively removed. The system desalination rate is generally above 98%. In this process, the concentrated water regulating valve 18 can adjust the membrane element / concentrated water flow channel resistance according to the structural characteristics of the reverse osmosis membrane element. At the same time, the flushing solenoid valve 19 is used to control the switch during the concentrated water flushing. The water treated by the reverse osmosis membrane group 15 enters the pure water tank 23 again. When the pure water tank 23 is discharged, it will pass through the supply The water conductivity detector 25 monitors the content of dissolved solids (such as salt, minerals, etc.) in pure water, and then pumps the water into the delivery pipeline through the water supply pump 26. When supplying water, the water pressure and water flow controller 27 provides constant pressure control for the water supply pump 26 to keep the pressure in a stable state, and is filtered through the precision filter 28. The precision filter 28 is equipped with a PTFE filter element. The filtration accuracy of the PTFE folded filter element is usually between 0.1 microns and 10 microns, which can filter tiny particles, viruses, bacteria and other harmful substances. When the water comes out of the water point, it is disinfected by ultraviolet light 30 and ultrafiltration 31 to make the water quality meet the endoscope water standard. When the pure water enters the pure water tank 23 again after transportation, it will be filtered through the precision filter 2 33 to purify the water quality returning to the water tank, ensuring that the water quality can still be within the endoscope water standard during the entire transportation process, storage process or use. .

[0034] Furthermore, the ultraviolet disinfection 30 and the ultrafiltration 31 are integrated and installed below the water use point.

[0035] See also Figure 1 , Figure 4 When the delivery pipeline is long, install the two below the water point. The pore size of the filter membrane inside the ultrafiltration 31 is ≤0.2μm. The integrated design reduces the space occupied by the equipment and is suitable for environments with limited space. It is easy to install and maintain. At the same time, installing it at the water point can reduce the retention time of pure water and ensure that the water quality of the outlet is safer and cleaner.

[0036] Furthermore, a liquid level rod 35 is installed in the pure water tank 23 , and a breather 34 is installed on the top of the pure water tank 23 .

[0037] See also Figure 4The liquid level rod 35 is used to control the liquid level in the pure water tank 23, and is also used to prevent the water supply pump 26 from being out of water. The respirator 34 is used to isolate the pure water and the liquid from direct contact with the air and to prevent impurities such as bacteria, dust, mosquitoes, etc. in the air from entering the pure water tank 23 with the air to cause secondary pollution of the water quality.

[0038] Furthermore, the softening filter tank 7 is connected to a salt box 9 via a pipeline.

[0039] See also Figure 2 The salt box 9 is filled with softening salt, which provides a regeneration function for the softening resin in the softening filter tank 7, ensuring that the softening resin in the softening filter tank 7 can continue to guarantee the function of softening water quality.

[0040] Furthermore, a pressure gauge 11 is installed on the top of the security filter 10, and the pressure gauge 11 is used to detect the operating pressure change of the security filter 10. A pressure gauge 2 14 is installed at the high-pressure pump 13, and the pressure gauge 2 14 is used to detect the pressure change at the water outlet of the high-pressure pump 13. A pressure gauge 3 16 is installed at the reverse osmosis membrane group 15, and the pressure gauge 3 16 is used to detect the pressure change of the concentrated water when the reverse osmosis membrane group 15 is running.

[0041] See also Figure 2 , Figure 3 The pressure gauge 11, the pressure gauge 2 14 and the pressure gauge 3 16 can be used to monitor the changes in the concentrated water pressure in the safety filter 10, the high-pressure pump 13 and the reverse osmosis membrane group 15 in real time when the equipment is running, so as to timely grasp the running status of the equipment and play a role in fault warning, so as to timely replace the filter element in the safety filter 10, or to evaluate the performance of the inner membrane of the reverse osmosis membrane group 15 and find problems in time.

[0042] Furthermore, a concentrated water flow meter 17 and a pure water flow meter 22 are installed at the reverse osmosis membrane group 15 .

[0043] See also Figure 3 The concentrate flowmeter 17 is used to monitor the flow of concentrate in the reverse osmosis membrane group 15, and the pure water flowmeter 22 is used to monitor the flow of pure water in the reverse osmosis membrane group 15, so as to adjust the flow of concentrate and pure water in time, so that the concentrate flow and pure water flow of the system maintain a certain ratio, that is, to meet the requirements of the system recovery rate. The ratio of concentrate to pure water is usually 5 or 6:4.

[0044] Furthermore, a conductivity detector 21 is installed at the water inlet end of the pure water tank 23 .

[0045] See also Figure 1 , Figure 3 , Figure 4The conductivity detector 21 is used to detect the water quality when the reverse osmosis membrane group 15 produces water. By monitoring the conductivity of pure water, the water quality of pure water is evaluated and the concentration of dissolved substances in water is timely understood. The pure water tank 23 is a water storage tank for the water produced by the reverse osmosis membrane group 15, which guarantees a certain amount of water for the subsequent water supply to the water use point.

[0046] Furthermore, a check valve 20 is installed between the pure water tank 23 and the reverse osmosis membrane group 15 .

[0047] See also Figure 1 , Figure 3 , Figure 4 The main function of the check valve 20 is to prevent the liquid from flowing back in the system and ensure that the pure water does not flow back to the reverse osmosis membrane group 15. The check valve 20 can effectively prevent the mixing of different water qualities (such as pure water and concentrated water) and reduce the on-site installation time.

[0048] Furthermore, a ball valve 24 is installed at the water outlet of the pure water tank 23, and a ball valve 29 is installed at the water outlet of the precision filter 28.

[0049] See also Figure 4 The ball valve 1 24 and the ball valve 2 29 can conveniently adjust and control the opening and closing of the water flow, and can conveniently cut off the water flow during maintenance and overhaul, avoiding the risk of water outage and water leakage.

[0050] Furthermore, a water return ball valve 32 is installed at the water inlet end of the precision filter 2 33 .

[0051] See also Figure 4 The return ball valve 32 can flexibly control the switch of the water flow, and plays a role in regulating the return flow when replacing the filter element in the precision filter 2 33.

[0052] When the pure water equipment for ensuring the total number of bacteria in endoscopes is used, when the equipment is in normal operation, turn on the following switches in sequence: inlet-raw water pump 2-water pressure and flow controller 1 3-water inlet solenoid valve 4-automatic control valve 6-softening control valve 8-security filter 10-low pressure switch 12-high pressure pump 13-pressure gauge 2 14-reverse osmosis membrane group 15-conductivity detector 21-pure water flow meter 22-pure water tank 23-ball valve 1 24-water supply conductivity detector 25-water supply pump 26-water pressure and flow control 2-precision filter 1 28-ball valve 2 29-ultraviolet disinfection 30-ultrafiltration 31-return ball valve 32-precision filter 2 33-pure water tank 23;

[0053] When flushing the equipment, turn on the following switches in sequence: inlet-raw water pump 2-water pressure and flow controller 1 3-water inlet solenoid valve 4-automatic control valve 6-softening control valve 8-safety filter 10-low pressure switch 12-high pressure pump 13-pressure gauge 2 14-pressure gauge 3 16-flushing solenoid valve 19-check valve 20;

[0054] When the equipment is disinfected, turn on the following switches in sequence: ozone generator 36-ball valve 1 24-water supply conductivity detector-water supply pump 26-water pressure and water flow controller 2 27-precision filter 1 28-ball valve 2 29-ultraviolet disinfection 30-ultrafiltration 31-return ball valve 32-precision filter 2 33-pure water tank 23.

[0055] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pure water device for ensuring the total bacterial count of an endoscope, comprising a water inlet (1) and a raw water pump (2), characterized in that: The water inlet end of the raw water pump (2) is connected to the water inlet (1), and the water outlet end of the raw water pump (2) is connected to a multi-media filter tank (5). A water pressure and water flow controller (3) and a water inlet solenoid valve (4) are installed at the raw water pump (2). The water pressure and water flow controller (3) is used to control the water pressure of the water inlet of the raw water pump (2); A softening filter tank (7) is installed at the water outlet end of the multi-media filter tank (5); an automatic control valve (6) is installed on the top of the multi-media filter tank (5); the automatic control valve (6) is used to control the state of the multi-media filter tank (5); a softening control valve (8) is installed on the top of the softening filter tank (7); the softening control valve (8) is used to control the state of the softening filter tank (7); A safety filter (10) is installed at the water outlet of the softening filter tank (7); a high-pressure pump (13) is installed at the water outlet of the safety filter (10); a low-pressure switch (12) is installed on the high-pressure pump (13); and the low-pressure switch (12) is used to control the low-pressure protection function of the high-pressure pump (13); A reverse osmosis membrane group (15) is installed at the water outlet of the high-pressure pump (13), and a concentrated water regulating valve (18) and a flushing solenoid valve (19) are also installed at the water inlet of the reverse osmosis membrane group (15); A pure water tank (23) is installed at the water outlet of the reverse osmosis membrane group (15). A water supply conductivity detector (25) and a water supply pump (26) are installed at the water outlet of the pure water tank (23) in sequence. A water pressure and water flow controller (27) is installed at the water supply pump (26). A precision filter (28) is installed at the water outlet of the water supply pump (26). The water outlet of the precision filter (28) is connected in parallel with a plurality of water use points. An ultraviolet disinfection device (30) and an ultrafiltration device (31) are installed between the precision filter (28) and the water use points. An ozone generator (36) is installed on the pure water tank (23). The water outlet of the precision filter (28) is connected to the pure water tank (23) through a pipeline, and a precision filter (33) is installed on the pipeline.

2. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: The ultraviolet disinfection (30) and the ultrafiltration (31) are integrated and installed below the water use point.

3. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: A liquid level rod (35) is installed in the pure water tank (23), and a respirator (34) is installed on the top of the pure water tank (23).

4. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized in that: The softening filter tank (7) is connected to a salt box (9) via a pipeline.

5. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: A pressure gauge 1 (11) is installed at the top of the security filter (10), and the pressure gauge 1 (11) is used to detect the change in the operating pressure of the security filter (10). A pressure gauge 2 (14) is installed at the high-pressure pump (13), and the pressure gauge 2 (14) is used to detect the change in the pressure at the water outlet of the high-pressure pump (13). A pressure gauge 3 (16) is installed at the reverse osmosis membrane group (15), and the pressure gauge 3 (16) is used to detect the change in the concentrated water pressure when the reverse osmosis membrane group (15) is in operation.

6. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: A concentrated water flow meter (17) and a pure water flow meter (22) are installed at the reverse osmosis membrane group (15).

7. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: A conductivity detector (21) is installed at the water inlet end of the pure water tank (23).

8. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: A check valve (20) is installed between the pure water tank (23) and the reverse osmosis membrane group (15).

9. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 is characterized by: The water outlet end of the pure water tank (23) is installed with a ball valve 1 (24), and the water outlet end of the precision filter 1 (28) is installed with a ball valve 2 (29).

10. The pure water equipment for ensuring the total number of bacteria in endoscopes according to claim 1 or 2, characterized in that: A water return ball valve (32) is installed at the water inlet end of the second precision filter (33).

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