A fully automatic endoscopic pure water machine using a physical disinfection method

Abstract

This invention relates to the field of pure water machine technology, specifically a fully automatic endoscopic pure water machine using a physical disinfection method. It includes: a pre-filter, a resin filter, a precision filter, a high-pressure pump, an RO module, a sterile water tank, a pure water pump, a flow-through ultraviolet device, a bacterial filter, and an outlet valve, all arranged in series. The pre-filter's inlet is connected to an inlet solenoid valve, a first sampling port, a water hammer device, an inlet manual valve, and a raw water pressure transformer. A main solenoid valve is located between the resin filter and the precision filter. The resin filter is connected to a brine tank. The sterile water tank is connected to a water tank pressure transformer and a drain valve. A second sampling port, a pressure tank, and a pure water pressure transformer are located between the flow-through ultraviolet device and the bacterial filter. It employs multiple physical disinfection processes without the continuous addition of any chemical disinfectants, thus avoiding the risk of chemical reactions with residual disinfectant in the endoscope and preventing potential irritation or allergic reactions to patients caused by residual disinfectants.

Description

Technical Field

[0001] This invention relates to the field of pure water machine technology, specifically to a fully automatic endoscopic pure water machine using a physical disinfection method. Background Technology

[0002] Endoscopes are indispensable precision instruments in hospital diagnosis and treatment, and the quality of their cleaning and disinfection directly affects patient safety. WS507-2016, the "Technical Specification for Cleaning and Disinfection of Flexible Endoscopes," clearly requires that after disinfection, endoscopes must undergo a final rinse with purified or sterile water for at least 2 minutes to thoroughly remove disinfectant residues from the endoscope surface and tubing. The core purpose of the final rinse is "cleaning and residue removal," not "secondary disinfection."

[0003] Currently, most endoscopic water purification systems on the market use a method of continuously adding disinfectant to purified water to meet the total bacterial count requirements, which has significant technical defects: On the one hand, the disinfectant used in the endoscope disinfection process has a complex composition, and the disinfectant in the final rinsing water may react chemically with the residual disinfectant in the endoscope to produce harmful substances; on the other hand, disinfectant residue may cause allergic reactions or mucosal irritation in patients with sensitive constitutions, and the chemical agents can cause the conductivity of purified water to increase, exceeding the ≤15μs / cm standard specified in WS310-2016, affecting the service life of the endoscope and the accuracy of diagnosis and treatment. Summary of the Invention

[0004] To address the technical problems existing in the background art, the present invention provides a fully automatic endoscopic pure water machine with physical disinfection method. It adopts multiple physical disinfection processes without the continuous addition of any chemical disinfectant, thereby avoiding the risk of chemical reaction with residual disinfectant in the endoscope, and also avoiding the potential irritation or allergic reactions of residual disinfectant to patients.

[0005] The technical solution adopted by this invention to solve its technical problem is: A fully automatic endoscopic water purifier using a physical disinfection method includes: The system consists of a pre-filter, resin filter, precision filter, high-pressure pump, RO module, sterile water tank, pure water pump, ultraviolet light filter, bacterial filter, and outlet valve, all connected in series.

[0006] Furthermore, the inlet end of the pre-filter is connected to an inlet solenoid valve, a first sampling port, a water hammer protection device, an inlet manual valve, and a raw water pressure transformer. A main solenoid valve is installed between the resin filter and the precision filter; The resin filter is connected to a salt tank; The sterile water tank is connected to a water tank pressure transformer and a drain valve; A second sampling port, a pressure tank, and a pure water pressure transformer are installed between the ultraviolet light device and the bacterial filter. A valve and a pure water outlet valve are installed between the bacterial filter and the water outlet valve.

[0007] Furthermore, a pure water flow meter, a conductivity meter, and a qualified valve are installed between the RO module and the sterile water tank; An unqualified valve is installed between the conductivity meter and the qualified valve.

[0008] Furthermore, the sterile water tank is connected in series with an ejector, a pure water reflux valve, and a return water valve, with the return water valve connected to the pure water outlet valve.

[0009] Furthermore, the jet injector is connected to an ozone disinfection valve, a check valve, and an ozone generator; The jet injector is also connected to a disinfectant inlet valve.

[0010] Furthermore, a bypass valve is installed between the outlet end of the valve and the inlet end of the inlet manual valve.

[0011] Furthermore, the RO module is connected to an RO transformer; The RO module is connected to a pressure gauge, a proportional control valve, and a concentrate flow meter. The RO module is connected to a flushing solenoid valve, which is set in parallel with the proportional control valve and the concentrate flow meter.

[0012] Furthermore, a disinfection valve is installed between the outlet of the sterile water tank and the inlet of the precision filter.

[0013] Furthermore, the overcurrent ultraviolet device includes: The casing has an inlet and an outlet; The light-emitting component is located inside the housing, and a cylindrical flow channel connecting the inlet and outlet is formed between the housing and the light-emitting component; A flow guiding component is disposed within a cylindrical flow channel; The flow guiding component is composed of several conical spiral plates arranged in a stacked manner around the outside of the light-emitting component; A bypass opening is formed between adjacent conical spiral plates.

[0014] Furthermore, each end of the conical spiral blade is provided with a fixed post, and the fixed post is fitted with a movable sleeve.

[0015] The beneficial effects of this invention are: (1) The multi-physical disinfection process of ultraviolet light, ozone and bacterial filtration is adopted, without the continuous addition of any chemical disinfectant, which avoids the risk of chemical reaction between the disinfectant and the endoscope residue, and also eliminates the risk of irritation or allergy to patients caused by disinfectant residue, which fully meets the core requirement of "residue removal" in the final rinse.

[0016] (2) Physical disinfection does not introduce any chemical impurities. After RO water production, the conductivity can be stably controlled at ≤15μs / cm, which meets the WS310-2016 standard. At the same time, it avoids scale deposition and equipment corrosion caused by disinfectants, and extends the service life of endoscopes and pure water machines.

[0017] (3) Multiple disinfection synergistic effects: immersion ultraviolet light covers the water tank for storage, pipeline ultraviolet light covers the transportation process, ozone disinfection covers the circulation pipeline, and a bacterial filter serves as the final protection, effectively killing bacteria, viruses, pyrogens, and other microorganisms. The total bacterial count is consistently ≤10 CFU / 100mL, meeting the requirements of WS507-2016. The water supply pipeline is designed with a circulating backflow structure, combined with regular pulse flushing, to eliminate dead corners in the pipeline and avoid secondary pollution from the source.

[0018] (4) The raw water is compatible with municipal tap water and the water supply pressure is stable. It can meet the water needs of various equipment such as endoscope cleaning and disinfection machines, special flowing water cleaning tanks, pressure water guns, and ultrasonic cleaners. It is suitable for endoscope cleaning and disinfection centers in various hospitals.

[0019] (5) The flow guiding component formed by the superposition of conical spiral plates makes the water flow spiral propulsion and local turbulence in the cylindrical flow channel, which prolongs the contact time between the water flow path and the ultraviolet irradiation, avoids the flow dead zone, ensures the uniform and sufficient addition of ultraviolet dose, and greatly improves the sterilization efficiency.

[0020] (6) The bypass opening formed between the conical spiral plates can re-enter the mainstream water flow that is far away from the central radiation area of ​​the light-emitting component. During the re-entry process, it can also disturb the mainstream water flow, enhance the mixing and turbulence intensity inside the water flow, thereby eliminating the irradiation quiet zone or low dose zone, making the ultraviolet radiation more uniform, improving the consistency of ultraviolet radiation dose, and thus strengthening the overall sterilization effect.

[0021] (7) When the water flows near the movable sleeve, it can generate dynamic pressure, which can drive the movable sleeve to make irregular micro-movements, thereby further disturbing the surrounding flow field, inducing additional turbulence, promoting secondary mixing of the nearby water, and thus further enhancing the efficiency of ultraviolet sterilization. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a schematic diagram of the piping system of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a cross-sectional view of the ultraviolet light transmission device. Figure 4 This is a schematic diagram of the flow guiding component; Figure 5This is a schematic diagram of the flow guide vane.

[0024] In the picture: 1. Inlet solenoid valve, 2. First sampling port, 3. Water hammer device, 4. Inlet manual valve, 5. Raw water pressure transformer, 6. Pre-filter, 7. Resin filter, 8. Brine tank, 9. Main solenoid valve, 10. Precision filter, 11. High-pressure pump, 12. RO module, 13. RO pressure transformer, 14. Pressure gauge, 15. Proportional regulating valve, 16. Concentrate flow meter, 17. Flushing solenoid valve, 18. Pure water flow meter, 19. Conductivity meter, 20. Non-compliant valve, 21. compliant valve, 2 2. Sterile water tank; 23. Ejector; 24. Disinfectant inlet valve; 25. Ozone disinfection valve; 26. Pure water return valve; 27. Check valve; 28. Ozone generator; 29. ​​Water tank pressure transformer; 30. Drain valve; 31. Pure water pump; 32. Flow ultraviolet device; 33. Disinfection valve; 34. Second sampling port; 35. Pressure tank; 36. Pure water pressure transformer; 37. Bacterial filter; 38. Valve; 39. Bypass valve; 40. Return water valve; 41. Pure water outlet valve; 42. Outlet valve; 321. Housing; 322. Light-emitting component; 323. Airflow guiding component; 324. Bypass port; 3231. Conical spiral blade, 3232. Fixed column, 3233. Movable sleeve. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1 , 2 As shown, a fully automatic endoscopic pure water machine using a physical disinfection method includes: a pre-filter 6, a resin filter 7, a precision filter 10, a high-pressure pump 11, an RO module 12, a sterile water tank 22, a pure water pump 31, an ultraviolet (UV) filter 32, a bacterial filter 37, and an outlet valve 42, all arranged in series. The pre-filter 6, resin filter 7, precision filter 10, high-pressure pump 11, and RO module 12 form the water production pipeline, while the sterile water tank 22, pure water pump 31, UV filter 32, bacterial filter 37, and outlet valve 42 form the water supply pipeline.

[0027] The pre-filter 6, resin filter 7 and precision filter 10 form a pretreatment system to remove impurities such as silt, colloids, metal ions, residual chlorine and organic matter from the raw water, protect the subsequent RO module 12, and ensure the stable operation of the water purification system.

[0028] The pre-filter 6 contains refined quartz sand and coconut shell activated carbon to remove impurities such as silt, colloids, metal ions, residual chlorine, and organic matter from the raw water. It is equipped with a fully automatic control valve with multiple valves in the same valve body. The controller sends instructions to the multi-way valve according to the set program, and the multi-way valve automatically completes the opening and closing of multiple valves, thus realizing fully automatic operation, backwashing and forward washing programs.

[0029] The resin filter 7 has a built-in cation exchange resin and is equipped with a brine tank 8, which can convert the feed water into soft water. Softened water refers to water whose hardness has been removed or reduced to a certain level. During the softening process, only the hardness decreases, while the total salt content remains unchanged. To prevent chemical scaling on the concentrate side of the reverse osmosis system, especially on the concentrate side of the last membrane element in the reverse osmosis pressure vessel, which would affect the membrane element's performance, sodium ion softening technology is used before the reverse osmosis feed water. This exchanges calcium and magnesium ions with sodium ions in the water, resulting in a residual hardness of <17.8 mg / L in the effluent, achieving the softening purpose and meeting the feed water quality requirements of the RO module 12. Equipped with a fully automatic control valve, the controller sends commands to the multi-way valve according to a set program. The multi-way valve automatically completes the opening and closing of multiple valves, thus achieving fully automatic operation, including backwashing, regeneration, replacement, and forward washing procedures.

[0030] The precision filter 10 has a built-in melt-blown polypropylene filter element, whose main function is to remove particulate impurities such as quartz sand and activated carbon powder left over from the previous process, as well as impurities, pollutants, colloids, and suspended solids in the residual water. The filter element of the precision filter 10 uses a melt-blown polypropylene filter element, which provides deep filtration and has the advantages of large dirt holding capacity, long service life, and easy replacement.

[0031] RO module 12 is a membrane separation device driven by pressure difference. Its core is a spiral wound composite reverse osmosis membrane, which can remove 96%-99% of dissolved salts, colloids, microorganisms, organic matter and other impurities from water. It is the core unit of the water purification system.

[0032] The sterile water tank 22 is a sealed, sanitary-grade water storage tank made of 304 stainless steel. The inner surface has a sanitary-grade mirror polished finish, while the outer surface has a brushed matte finish. It is used to store the pure water produced by the system. It is equipped with a pressure-type liquid level device and a breather made of 0.22μm hydrophobic material on the top to prevent airborne contaminants from entering. It also has a built-in 360-degree cleaning spray ball to prevent bacterial growth. The sterile water tank 22 contains an immersion ultraviolet sterilizer. This immersion ultraviolet sterilizer uses a sealed quartz sleeve structure, ensuring uniform and thorough irradiation, effectively killing contaminating bacteria within the sterile water tank 22 and ensuring the sterility of the pure water inside.

[0033] The main body of the ultraviolet device 32 is made of stainless steel, eliminating the problem of metal ion contamination. The product structure is a sealed quartz sleeve type with an internal electrical control device. The ultraviolet device 32 is installed on the pure water outlet pipeline to ensure that the water remains sterile after passing through components such as the pure water pump 31.

[0034] The Bacterial Filter 37 has a built-in 0.22μm pleated filter element, which serves as the last line of defense for pure water supply. It can filter out particles and bacteria larger than 0.2μm, with high filtration accuracy and no media shedding, ensuring that the water output at the point of use is sterile.

[0035] In a specific embodiment, the inlet of the pre-filter 6 is connected to the municipal tap water pipe, and the outlet of the pre-filter 6 is connected to the inlet of the resin filter 7 via a sanitary pipe. The outlet of the resin filter 7 is connected to the inlet of the precision filter 10. The outlet of the precision filter 10 is connected to the inlet of the high-pressure pump 11 via a pipe.

[0036] The outlet of the high-pressure pump 11 is connected to the inlet of the RO module 12. The concentrate outlet of the RO module 12 is connected to the drain pipe. The product water outlet of the RO module 12 is connected to the inlet of the sterile water tank 22.

[0037] The inlet of the sterile water tank 22 is connected to the product water outlet of the RO module 12, and the outlet of the sterile water tank 22 is connected to the inlet of the pure water pump 31. An immersion-type ultraviolet sterilizer is built into the top of the sterile water tank 22, providing continuous immersion ultraviolet sterilization to prevent secondary contamination of the pure water inside the sterile water tank 22. A level sensor is installed at the bottom of the sterile water tank 22 and connected to the control system via a cable. A breather and a spray ball are installed on the top of the sterile water tank 22, with the spray ball connected to the pure water circulation system via a return pipe. The spray ball uses the pure water return flow to periodically clean the inner wall of the sterile water tank 22, preventing bacterial growth.

[0038] The outlet of the pure water pump 31 is sequentially connected to the ultraviolet (UV) light source device 32, the pressure tank 35, and the bacterial filter 37. The outlet of the bacterial filter 37 is connected to the water point pipeline and simultaneously connected to the jet injector 23 via a return pipeline to the sterile water tank 22, forming a closed-loop circulation. The pure water pump 31 and the pressure tank 35 work together to achieve constant pressure water supply. The UV light source device 32 further sterilizes the pure water during the transportation process. The bacterial filter 37 serves as the final filtration, ensuring the sterility of the water at the water point. The circulation pipeline design avoids dead ends and prevents secondary contamination.

[0039] The inlet of the pre-filter 6 is connected to an inlet solenoid valve 1, a first sampling port 2, a water hammer prevention device 3, an inlet manual valve 4, and a raw water pressure transformer 5. A main solenoid valve 9 is installed between the resin filter 7 and the precision filter 10. The sterile water tank 22 is connected to a tank pressure transformer 29 and a drain valve 30. A second sampling port 34, a pressure tank 35, and a pure water pressure transformer 36 are installed between the ultraviolet light device 32 and the bacterial filter 37. A valve 38 and a pure water outlet valve 41 are installed between the bacterial filter 37 and the outlet valve 42.

[0040] A pure water flow meter 18, a conductivity meter 19, and a pass / fail valve 21 are installed between the RO module 12 and the sterile water tank 22. A fail / fail valve 20 is installed between the conductivity meter 19 and the pass / fail valve 21. The conductivity meter 19 is installed on the product water pipeline of the RO module 12 for real-time monitoring of the product water quality. Concentrate is discharged after being metered by the concentrate flow meter 16, and pure water enters the sterile water tank 22 after passing the conductivity meter 19 test.

[0041] The sterile water tank 22 is connected to a jet injector 23, a pure water return valve 26 and a return water valve 40 arranged in series. The return water valve 40 is connected to the pure water outlet valve 41.

[0042] The ejector 23 is connected to an ozone disinfection valve 25, a one-way valve 27, and an ozone generator 28. The ozone generator 28 is connected to the ejector 23 via the ozone disinfection valve 25, and the ejector 23 is connected in series in the water supply circulation pipeline. The ozone generated by the ozone generator 28 is mixed with circulating pure water via the ejector 23. By mixing ozone with pure water through the ejector 23 and utilizing a closed-loop circulation system in the pure water pipeline, a concentration of 0.3-2 mg / L is maintained within the pipeline, killing bacteria within 0.5-1 minute, thus disinfecting the entire water supply pipeline. Ozone has strong oxidizing properties and a broad spectrum of activity; after disinfection, it self-decomposes back to oxygen, leaving no residue or secondary pollution.

[0043] The ejector 23 is also connected to a disinfectant inlet valve 24. Peracetic acid disinfectant is added via the disinfectant inlet valve 24 using a self-priming method, providing comprehensive disinfection of the water purification system, water supply pipelines, and water usage points. When chemical disinfection is required, the disinfectant inlet valve 24 can be opened to draw in the disinfectant.

[0044] A bypass valve 39 is installed between the outlet end of valve 38 and the inlet end of inlet hand valve 4. The bypass valve 39 allows pure water to flow back to the connected water production pipeline for cleaning.

[0045] RO module 12 is connected to RO transformer 13. RO module 12 is also connected to pressure gauge 14, proportional control valve 15, and concentrate flow meter 16. RO module 12 is further connected to flushing solenoid valve 17, which is configured in parallel with proportional control valve 15 and concentrate flow meter 16.

[0046] A disinfection valve 33 is installed between the outlet of the sterile water tank 22 and the inlet of the precision filter 10. The disinfection valve 33 enables the precision filter 10, the high-pressure pump 11, the RO module 12 and the sterile water tank 22 to form a disinfection circuit.

[0047] The system also includes a control system comprised of a PLC controller, a touchscreen, pressure sensors, level sensors, alarm devices, and water immersion sensors. All sensors are connected to the PLC controller via cables. The touchscreen is mounted on the front of the cabinet and communicates bidirectionally with the PLC. Alarm devices, water immersion sensors, and all pumps and valves are connected to the control system. The control system can automatically produce water, automatically flush, automatically disinfect, and automatically supply water. It also provides parameter monitoring and various protection functions, and includes a manual operation mode.

[0048] like Figure 3 , 4 As shown, the ultraviolet (UV) device 32 includes a housing 321 with an inlet and an outlet. A light-emitting component 322 is disposed inside the housing 321, forming a cylindrical flow channel connecting the inlet and outlet between the housing 321 and the light-emitting component 322. A flow-guiding component 323 is disposed within the cylindrical flow channel. The flow-guiding component 323 is composed of several conical spiral plates 3231 stacked around the outside of the light-emitting component 322. The flow-guiding component 323, formed by the stacked conical spiral plates 3231, creates spiral propulsion and local turbulence in the water flow within the cylindrical flow channel, extending the contact time between the water flow path and the UV radiation generated by the light-emitting component 322, avoiding dead zones, ensuring uniform and sufficient UV dosage, and significantly improving sterilization efficiency.

[0049] A bypass opening 324 is formed between adjacent conical spiral plates 3231. Specifically, the lower end of the upper conical spiral plate 3231 and the upper end of the lower conical spiral plate 3231 are staggered, thus forming the bypass opening 324. The bypass opening 324 allows water flow far from the central radiation area of ​​the light-emitting component 322 to re-enter the main stream. During this re-entry process, it also disturbs the main stream, enhancing the mixing and turbulence intensity within the water flow. This eliminates irradiation dead zones or low-dose zones, making ultraviolet radiation more uniform and improving the consistency of ultraviolet radiation dose, thereby strengthening the overall sterilization effect.

[0050] like Figure 5As shown, fixed posts 3232 are respectively provided at both ends of the conical spiral blade 3231, and a movable sleeve 3233 is fitted onto the fixed posts 3232. In a specific embodiment, the conical spiral blade 3231 is a sheet metal structure, and the fixed posts 3232 are formed by folding sheet metal. The movable sleeve 3233 has a cylindrical structure with a through groove on its side wall, and the movable sleeve 3233 is fitted onto the fixed posts 3232, with the conical spiral blade 3231 located in the through groove. The movable sleeve 3233 has a certain amount of free movement on the fixed posts 3232. When water flows near the movable sleeve 3233, it can drive the movable sleeve 3233 to undergo irregular micro-movements, thereby further disturbing the surrounding flow field, inducing additional turbulence, promoting secondary mixing of the nearby water, and thus further enhancing the efficiency of ultraviolet sterilization.

[0051] The specific workflow includes water production, water supply, and disinfection.

[0052] The water production process is as follows: Municipal tap water, after being stabilized by the raw water booster system, enters the pre-filter 6 to remove suspended solids and residual chlorine. Then, it is softened by the resin filter 7 to remove calcium and magnesium ions. Finally, after passing through the precision filter 10 to filter impurities larger than 0.5μm, it is pressurized by the high-pressure pump 11 and sent to the RO module 12. Under the action of pressure difference, the RO module 12 separates pure water and concentrated water. The concentrated water is discharged, and the pure water, after being tested by a conductivity meter, enters the sterile water tank 22. When the liquid level in the sterile water tank 22 reaches the high-level peak, the control system shuts down the high-pressure pump 11, stopping water production. When the liquid level drops to the low-level peak, the high-pressure pump 11 is restarted to resume water production.

[0053] The water supply process is as follows: When the water point is opened, the pure water pressure drops to the starting pressure of the pure water pump 31, which then starts. The pressure tank 35 works together to maintain a stable water supply pressure. The pure water passes through the ultraviolet light device 32 and the bacterial filter 37 before being delivered to the water point. Unused pure water returns to the sterile water tank 22 through the return pipeline, forming a circulation and preventing stagnant water in the pipeline. When the water point is closed, the pure water pressure rises to the stopping pressure of the pure water pump 31, which then stops operating. The return valve 40 and the pure water return valve 26 open periodically to maintain water flow in the pipeline.

[0054] The disinfection process is as follows: During routine disinfection, the immersion ultraviolet light in the overflow ultraviolet device 32 and the sterile water tank 22 runs continuously, and the ozone generator 28 starts at the set time to disinfect the circulation pipeline.

[0055] For routine chemical disinfection every 1-3 months: With the equipment in standby mode, add peracetic acid disinfectant through disinfectant inlet valve 24 to disinfect both the water supply and water production pipelines. After soaking in the disinfectant solution for a period of time, rinse both the water supply and water production pipelines separately. Once no residue is detected, resume normal operation.

[0056] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A fully automatic endoscopic pure water machine using a physical disinfection method, characterized in that, include: The system consists of a pre-filter (6), a resin filter (7), a precision filter (10), a high-pressure pump (11), an RO module (12), a sterile water tank (22), a pure water pump (31), an ultraviolet light device (32), a bacterial filter (37), and an outlet valve (42), all connected in series.

2. The fully automatic endoscopic pure water machine according to claim 1, characterized in that, The inlet end of the pre-filter (6) is connected to an inlet solenoid valve (1), a first sampling port (2), a water hammer device (3), an inlet manual valve (4), and a raw water pressure transformer (5). A main solenoid valve (9) is provided between the resin filter (7) and the precision filter (10). The resin filter (7) is connected to a salt tank (8); The sterile water tank (22) is connected to a water tank pressure transformer (29) and a discharge valve (30); A second sampling port (34), a pressure tank (35), and a pure water pressure transformer (36) are provided between the ultraviolet light device (32) and the bacterial filter (37). A valve (38) and a pure water outlet valve (41) are provided between the bacterial filter (37) and the water outlet valve (42).

3. The fully automatic endoscopic pure water machine using a physical disinfection method according to claim 2, characterized in that, A pure water flow meter (18), a conductivity meter (19), and a qualified valve (21) are installed between the RO module (12) and the sterile water tank (22). An unqualified valve (20) is provided between the conductivity meter (19) and the qualified valve (21).

4. The fully automatic endoscopic pure water machine using a physical disinfection method according to claim 2, characterized in that, The sterile water tank (22) is connected to a jet injector (23), a pure water return valve (26) and a return water valve (40) arranged in series. The return water valve (40) is connected to the pure water outlet valve (41).

5. The fully automatic endoscopic pure water machine according to claim 4, characterized in that, The jet injector (23) is connected to an ozone disinfection valve (25), a one-way valve (27), and an ozone generator (28). The jet injector (23) is also connected to a disinfectant inlet valve (24).

6. The fully automatic endoscopic pure water machine according to claim 2, characterized in that, A bypass valve (39) is provided between the outlet end of the valve (38) and the inlet end of the inlet hand valve (4).

7. The fully automatic endoscopic pure water machine according to claim 1, characterized in that, The RO module (12) is connected to an RO transformer (13); The RO module (12) is connected to a pressure gauge (14), a proportional control valve (15), and a concentrate flow meter (16). The RO module (12) is connected to a flushing solenoid valve (17), which is arranged in parallel with the proportional regulating valve (15) and the concentrate flow meter (16).

8. The fully automatic endoscopic pure water machine according to claim 1, characterized in that, A disinfection valve (33) is provided between the outlet of the sterile water tank (22) and the inlet of the precision filter (10).

9. The fully automatic endoscopic pure water machine according to claim 1, characterized in that, The overcurrent ultraviolet device (32) includes: The shell (321) is provided with an inlet and an outlet; A light-emitting component (322) is disposed inside the housing (321), and a cylindrical flow channel connecting the water inlet and the water outlet is formed between the housing (321) and the light-emitting component (322); The flow guiding component (323) is disposed within the cylindrical flow channel; The flow guiding component (323) is composed of a plurality of conical spiral plates (3231) arranged on the outside of the light-emitting component (322); A bypass opening (324) is formed between adjacent conical spiral plates (3231).

10. A fully automatic endoscopic pure water machine using a physical disinfection method according to claim 9, characterized in that, The conical spiral blade (3231) has fixed posts (3232) at both ends, and the fixed posts (3232) are fitted with movable sleeves (3233).

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