UV sterilization device for water purifier

Abstract

The UV sterilization device comprises a shell, a control unit, a water inlet pipe, a filtering unit, a sterilization unit and a water outlet pipe, the control unit is fixedly installed at the top of the shell, the water inlet pipe is fixedly installed at the bottom of the shell, the filtering unit is fixedly installed at the inner bottom of the shell, and the sterilization unit is fixedly installed at the inner bottom of the shell. The sterilizing unit is fixedly mounted on the shell, and the water outlet pipe is fixedly mounted on the filtering unit. The sterilization water tank, the inner glass cylinder, the gas glass cylinder and the outer glass cylinder are divided into a first ultraviolet sterilization area, a second ultraviolet sterilization area and a third ultraviolet sterilization area, and the first ultraviolet sterilization area plays a role in primary sterilization; and the water is irradiated by ultraviolet rays of the second ultraviolet sterilization area and the third ultraviolet sterilization area, so that the sterilization effect is effectively improved, the water is ensured to be thoroughly disinfected in multiple stages, and the problem of incomplete sterilization caused by non-uniform water flow is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification equipment, and particularly to a UV ultraviolet sterilization device for a water purifier. Background Art

[0002] In modern household and commercial environments, water purifiers, as important equipment for ensuring the safety of drinking water, their performance and reliability directly affect the health of users. The UV ultraviolet sterilization device is a key component in water purifiers for eliminating harmful microorganisms in water. However, existing UV ultraviolet sterilization devices have significant deficiencies in practical applications, especially in the problems of incomplete sterilization effect caused by uneven water flow and limited penetration of 254-nanometer UV-C ultraviolet rays emitted by ultraviolet lamps in water. These problems not only affect the safety of water quality but also pose challenges to user experience.

[0003] Currently, the UV ultraviolet sterilization devices on the market usually irradiate the flowing water body with 254-nanometer UV-C ultraviolet rays emitted by ultraviolet lamps to destroy the DNA structures of microorganisms such as bacteria and viruses in the water, so as to achieve the purpose of sterilization. Although this method can effectively remove pathogens in water in theory, in actual operation, due to the problem of uneven water flow, some areas of water are not fully irradiated, thus reducing the overall sterilization efficiency. Specifically, when the water flow rate is too fast or the distribution is uneven, some water molecules may only come into contact with ultraviolet rays for a short time, or even completely avoid the light irradiation path, making the microorganisms in these areas unable to be completely inactivated. In this case, even after the so-called "sterilization" treatment, there may still be surviving harmful microorganisms in the effluent water, bringing potential risks to the health of users.

[0004] In addition, although UV-C ultraviolet rays with a wavelength of 254 nanometers are most suitable for sterilization, their penetration in water is very limited, and the effective sterilization distance is usually between 1 and 3 centimeters. Beyond this range, the sterilization effect will be significantly weakened. This means that when designing a UV ultraviolet sterilization device, it is necessary to ensure that all water molecules can receive sufficient ultraviolet radiation within this limited distance. However, many traditional devices do not take this into account, resulting in some water bodies not being able to reach this optimal sterilization distance during actual use.

[0005] Existing UV ultraviolet sterilization devices lack an optimization and adjustment mechanism for different flow conditions. Due to the change of daily water use requirements, water purifiers need to adapt to different flow rates and water volumes. However, many traditional devices do not consider this. When facing peak water use periods or intermittent water use, their sterilization effect will be greatly reduced. Under low flow conditions, although the water flow is slow, if the device is not reasonably designed, it may also cause stagnant water flow in local areas, forming dead zones, which is also not conducive to comprehensive sterilization.

[0006] The poor adaptability of existing UV ultraviolet sterilization devices to water quality changes is also a problem that cannot be ignored. Water sources from different origins contain different suspended solids, dissolved organic matters, and mineral components. These substances may absorb or scatter ultraviolet rays, reducing their penetration power and sterilization efficiency. However, most traditional devices are not equipped with effective pretreatment units to reduce the impact of such interfering factors. For example, a high turbidity or color in water may cause ultraviolet rays to be absorbed prematurely, resulting in insufficient energy reaching the surface of microorganisms to complete the inactivation process. This not only weakens the overall performance of the UV device but also may mislead users into thinking that the treated water has reached the safe drinking standard, increasing health risks.

[0007] Existing UV ultraviolet sterilization devices meet the basic requirements to a certain extent, but there are still obvious deficiencies in dealing with incomplete sterilization caused by uneven water flow and the limited penetration power of ultraviolet rays in water.

[0008] Therefore, how to provide a UV ultraviolet sterilization device for water purifiers is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0009] An object of the present invention is to provide a UV ultraviolet sterilization device for a water purifier. The present invention divides the sterilization water tank, inner glass cylinder, air glass cylinder, and outer glass cylinder into a first ultraviolet sterilization area, a second ultraviolet sterilization area, and a third ultraviolet sterilization area. The first ultraviolet sterilization area plays a role in primary sterilization. The water is then irradiated by ultraviolet rays in the second ultraviolet sterilization area and the third ultraviolet sterilization area, effectively improving the sterilization effect, ensuring that the water is thoroughly disinfected in multiple stages, and avoiding the problem of incomplete sterilization caused by uneven water flow.

[0010] Through the structural design of the annular base, electrode ring, power connection ring seat, filament, inner glass cylinder, air glass cylinder, and outer glass cylinder, the present invention forms an ultraviolet lamp tube between the outer layer of the inner glass cylinder and the inner layer of the air glass cylinder, and an outer glass cylinder is arranged outside the ultraviolet lamp tube; this design forms the second ultraviolet sterilization area and the third ultraviolet sterilization area, making the ultraviolet lamp tube closely combined with these areas, thereby ensuring the effective coverage and sterilization effect of the ultraviolet sterilization area.

[0011] A UV ultraviolet sterilization device for a water purifier according to an embodiment of the present invention includes a housing, a control unit, a water inlet pipe, a filtration unit, a sterilization unit, and a water outlet pipe. Among them, the control unit is fixedly installed on the top of the housing, the water inlet pipe is fixedly installed on the bottom of the housing, the filtration unit is fixedly installed on the inner bottom of the housing, the sterilization unit is fixedly installed on the housing, and the water outlet pipe is fixedly installed on the filtration unit;

[0012] The sterilization unit includes a sterilization water tank, a wire mesh cover, an ultraviolet sterilization component, and a sterilization tube component. Among them, the sterilization water tank is fixedly installed on the housing, there are two wire mesh covers, and the two wire mesh covers are respectively fixedly installed on the top and bottom of the sterilization water tank. Both ends of the ultraviolet sterilization component are fixedly installed on the sterilization water tank, and the sterilization tube component is fixedly installed on the ultraviolet sterilization component;

[0013] The ultraviolet sterilization component includes an annular base, an electrode ring, a power connection ring seat, a filament, an inner glass cylinder, a gas glass cylinder, and an outer glass cylinder. Among them, the annular base is fixedly sleeved on both ends of the inner glass cylinder, the electrode ring is fixedly installed inside the annular base, the power connection ring seat is fixedly installed on the annular base, the filament is fixedly installed on the electrode ring, both ends of the gas glass cylinder are fixedly inserted into the annular base, and both ends of the outer glass cylinder are fixedly sleeved on the outer wall of the annular base;

[0014] Both sides of the outer wall of the power connection ring seat are provided with power connection grooves.

[0015] Furthermore, a first mounting plate is fixedly arranged inside the housing, a second mounting plate is fixedly arranged inside the housing, a third mounting plate is fixedly arranged inside the housing, and a lifting cushion block is fixedly arranged at the bottom of the housing.

[0016] Furthermore, the control unit includes a display screen, a processor, and a button group. Among them, the display screen is fixedly installed on the top of the housing, the processor is fixedly installed on the inner top of the housing, and the button group is fixedly installed on the top of the housing.

[0017] Furthermore, the filtering unit includes a first water delivery pipe, a cotton core filter cartridge, a water inlet solenoid valve, and a booster pump. Among them, inside one end of the first water delivery pipe, inside the first water delivery pipe, the other end of the cotton core filter cartridge is threadedly sleeved on the water outlet pipe, the water inlet solenoid valve is fixedly installed on the first water delivery pipe, the pump seat of the booster pump is fixedly installed inside the housing, and the working area of the booster pump is fixedly installed on the first water delivery pipe, an activated carbon filter core cartridge, a granular carbon filter core cartridge, and a first three-way water pipe. Among them, the PP cotton filter core cartridge is fixedly installed on the first mounting plate, the activated carbon filter core cartridge is fixedly installed on the first mounting plate, the granular carbon filter core cartridge is fixedly installed on the first mounting plate, the water inlet end of the PP cotton filter core cartridge is fixedly installed on the water inlet end of the first water delivery pipe and is fixedly installed on the water outlet end of the PP cotton filter core cartridge, the water inlet end of the granular carbon filter core cartridge is fixedly installed on the water outlet end of the activated carbon filter core cartridge, and the bottom of the first three-way water pipe is fixedly installed on the water outlet end of the granular carbon filter core cartridge.

[0018] Further, the filtering unit further includes a reverse osmosis membrane cylinder, a first fixing ring, a second three-way water pipe, a first one-way valve and a sewage solenoid valve. Among them, there are two reverse osmosis membrane cylinders, and the two reverse osmosis membrane cylinders are fixedly installed in the first fixing ring. The first fixing ring is fixedly installed on the second mounting plate. One end of the second three-way water pipe is fixedly installed on the reverse osmosis membrane cylinder. The first one-way valve is fixedly installed at one end of the second three-way water pipe close to the reverse osmosis membrane cylinder. The other end of the second three-way water pipe extends out of the housing, and the sewage solenoid valve is fixedly installed at the other end of the second three-way water pipe away from the first one-way valve.

[0019] Further, the filtering unit further includes a four-way water pipe, a second one-way valve, and an activated carbon fiber filter cartridge second fixing ring. Among them, one end of the four-way water pipe is fixedly installed on the reverse osmosis membrane cylinder. The second one-way valve is fixedly installed at one end of the four-way water pipe close to the reverse osmosis membrane cylinder. There are two activated carbon fiber filter cartridges, and the two activated carbon fiber filter cartridges are fixedly installed in the second fixing ring. The two activated carbon fiber filter cartridges are fixedly installed at the other end of the four-way water pipe, and the second fixing ring is fixedly installed on the third mounting plate.

[0020] Further, the filtering unit further includes a third three-way water pipe and a third one-way valve. One end of the third three-way water pipe is fixedly installed on the activated carbon fiber filter cartridge. The other end of the third three-way water pipe sequentially penetrates through the third mounting plate, the second mounting plate and the first mounting plate and extends into the sterilization water tank. The third one-way valve is fixedly installed at one end of the third three-way water pipe close to the activated carbon fiber filter cartridge.

[0021] Further, the ultraviolet sterilization component further includes a sealing column, a first water connection pipe, a second water connection pipe, an inner rubber sealing ring and an outer rubber sealing ring. Among them, the sealing column is fixedly installed at the inner top and inner bottom of the inner glass cylinder. The first water connection pipe is fixedly inserted into the sealing column. The second water connection pipe is fixedly installed at the upper and lower ends of the outer glass cylinder. The inner rubber sealing ring is fixedly sleeved on the outer wall of the air glass cylinder. The outer rubber sealing ring is fixedly sleeved on the outer wall of the annular base.

[0022] Furthermore, the sterilization tube assembly includes a first sterilization water pipe, a sterilization rotating water pipe, a second sterilization water pipe, and a sterilization drain pipe. The first sterilization water pipe is fixedly installed on the first water connection pipe and the second water connection pipe at the bottom of the ultraviolet sterilization assembly. One end of the sterilization rotating water pipe is fixedly installed on the top of the sterilization water tank, and the other end of the sterilization rotating water pipe is fixedly installed on the second water connection pipe at the top of the ultraviolet sterilization assembly. The second sterilization water pipe is fixedly installed on the first water connection pipe and the second water connection pipe at the top of the ultraviolet sterilization assembly. One end of the sterilization drain pipe is fixedly installed on the first water connection pipe at the top of the ultraviolet sterilization assembly, and the other end of the sterilization drain pipe extends into the housing. The end of the sterilization drain pipe extending into the housing is fixedly installed on the water outlet pipe.

[0023] The beneficial effects of the present invention are as follows:

[0024] In the present invention, the sterilization water tank, the inner glass cylinder, the air glass cylinder, and the outer glass cylinder divide the area into a first ultraviolet sterilization area, a second ultraviolet sterilization area, and a third ultraviolet sterilization area. The first ultraviolet sterilization area plays a role in primary sterilization. After the water passes through the ultraviolet irradiation in the second ultraviolet sterilization area and the third ultraviolet sterilization area, the sterilization effect is effectively improved, ensuring that the water is thoroughly disinfected at multiple stages and avoiding the problem of incomplete sterilization caused by uneven water flow.

[0025] Through the structural design of the annular base, the electrode ring, the power connection ring seat, the filament, the inner glass cylinder, the air glass cylinder, and the outer glass cylinder, an ultraviolet lamp tube is formed between the outer layer of the inner glass cylinder and the inner layer of the air glass cylinder, and an outer glass cylinder is arranged outside the ultraviolet lamp tube; this design forms the second ultraviolet sterilization area and the third ultraviolet sterilization area, enabling the ultraviolet lamp tube to be closely combined with these areas, thereby ensuring the effective coverage and sterilization effect of the ultraviolet sterilization area. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0027] Figure 1 is a schematic structural diagram of an overall UV ultraviolet sterilization device for a water purifier proposed by the present invention;

[0028] Figure 2 is a schematic structural diagram of a PP cotton filter core cylinder of an UV ultraviolet sterilization device for a water purifier proposed by the present invention;

[0029] Figure 3 is an UV ultraviolet sterilization device for a water purifier proposed by the present invention Figure 2 is an enlarged view of part A;

[0030] Figure 4The enlarged view of part B of a UV ultraviolet sterilization device for a water purifier proposed by the present invention Figure 2 ; enlarged view at B

[0031] Figure 5 The enlarged view of part C of a UV ultraviolet sterilization device for a water purifier proposed by the present invention Figure 2 ; enlarged view at C

[0032] Figure 6 Schematic structural diagram of the activated carbon filter core cylinder of a UV ultraviolet sterilization device for a water purifier proposed by the present invention

[0033] Figure 7 The enlarged view of part D of a UV ultraviolet sterilization device for a water purifier proposed by the present invention Figure 6 ; enlarged view at D

[0034] Figure 8 Schematic structural diagram of the granular carbon filter core cylinder of a UV ultraviolet sterilization device for a water purifier proposed by the present invention

[0035] Figure 9 The enlarged view of part E of a UV ultraviolet sterilization device for a water purifier proposed by the present invention Figure 8 ; enlarged view at E

[0036] In the figure: 1. Outer shell; 101. First mounting plate; 102. Second mounting plate; 103. Third mounting plate; 104. Lifting cushion block; 2. Water inlet pipe; 3. Water outlet pipe; 4. Sterilization water tank; 5. Mesh cover; 6. Ultraviolet sterilization component; 601. Annular base; 602. Electrode ring; 603. Power connection ring seat; 604. Filament; 605. Inner glass cylinder; 606. Gas glass cylinder; 607. Outer glass cylinder; 608. Power connection groove; 609. Sealing column; 6010. First water connection pipe; 6011. Second water connection pipe; 6012. Inner rubber seal ring; 6013. Outer rubber seal ring; 7. Sterilization pipe component; 701. First sterilization water pipe; 702. Sterilization rotating water pipe; 703. Second sterilization water pipe; 704. Sterilization drain pipe; 8. Display screen; 9. Processor; 10. Button group; 11. First water delivery pipe; 12. Cotton core filter cylinder; 13. Water inlet solenoid valve; 14. Booster pump; 15. PP cotton filter core cylinder; 16. Activated carbon filter core cylinder; 17. Granular carbon filter core cylinder; 18. First three-way water pipe; 19. Reverse osmosis membrane cylinder; 20. First fixing ring; 21. Second three-way water pipe; 22. First one-way valve; 23. Drainage solenoid valve; 24. Four-way water pipe; 25. Second one-way valve; 26. Activated carbon fiber filter core cylinder; 27. Second fixing ring; 28. Third three-way water pipe; 29. Third one-way valve Detailed implementation mode

[0037] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0038] Please refer to Figures 1 to 9 , the present invention provides a UV ultraviolet sterilization device for a water purifier, including a housing 1, a control unit, a water inlet pipe 2, a filtration unit, a sterilization unit, and a water outlet pipe 3. Among them, the control unit is fixedly installed on the top of the housing 1, the water inlet pipe 2 is fixedly installed on the bottom of the housing 1, the filtration unit is fixedly installed on the inner bottom of the housing 1, the sterilization unit is fixedly installed on the housing 1, and the water outlet pipe 3 is fixedly installed on the filtration unit.

[0039] Specifically, the sterilization unit includes a sterilization water tank 4, a mesh cover 5, an ultraviolet sterilization component 6, and a sterilization tube component 7. Among them, the sterilization water tank 4 is fixedly installed on the housing 1, there are two mesh covers 5, and the two mesh covers 5 are respectively fixedly installed on the top and bottom of the sterilization water tank 4. The two ends of the ultraviolet sterilization component 6 are fixedly installed on the sterilization water tank 4. The ultraviolet rays irradiated in the sterilization water tank 4 are the first ultraviolet sterilization area. The sterilization tube component 7 is fixedly installed on the ultraviolet sterilization component 6; the ultraviolet sterilization component 6 includes an annular base 601, an electrode ring 602, a power connection ring seat 603, a filament 604, an inner glass cylinder 605, a gas glass cylinder 606, and an outer glass cylinder 607. Among them, the annular base 601 is fixedly sleeved on both ends of the inner glass cylinder 605, the electrode ring 602 is fixedly installed inside the annular base 601, the power connection ring seat 603 is fixedly installed on the annular base 601, the filament 604 is fixedly installed on the electrode ring 602, both ends of the gas glass cylinder 606 are fixedly inserted into the annular base 601, and both ends of the outer glass cylinder 607 are fixedly sleeved on the outer wall of the annular base 601; both sides of the outer wall of the power connection ring seat 603 are provided with power connection grooves 608. The inner glass cylinder 605, the gas glass cylinder 606, and the outer glass cylinder 607 are made of quartz glass. Mercury vapor is filled between the outer layer of the inner glass cylinder 605 and the inner layer of the gas glass cylinder 606. The area between the outer layer of the gas glass cylinder 606 and the inner layer of the outer glass cylinder 607 is the second ultraviolet sterilization area. The inside of the inner glass cylinder 605 is the third ultraviolet sterilization area. The ultraviolet lamp tube becomes a water pipe to better sterilize the water. The ultraviolet lamp tube usually emits UV-C ultraviolet rays of 254 nanometers. This wavelength is most suitable for sterilization, but its penetration in water is limited, and the effective sterilization distance is between 1 - 3 cm. The effective sterilization is concentrated in the second ultraviolet sterilization area and the third ultraviolet sterilization area to avoid uneven sterilization when the water flows, resulting in incomplete sterilization of the water.

[0040] The ultraviolet sterilization component 6 further includes a sealing column 609, a first water connection pipe 6010, a second water connection pipe 6011, an inner rubber sealing ring 6012 and an outer rubber sealing ring 6013. Among them, the sealing column 609 is fixedly installed at the inner top and inner bottom of the inner glass cylinder 605. The first water connection pipe 6010 is fixedly inserted into the sealing column 609. The second water connection pipe 6011 is fixedly installed at the upper and lower ends of the outer glass cylinder 607. The inner rubber sealing ring 6012 is fixedly sleeved on the outer wall of the air glass cylinder 606. The outer rubber sealing ring 6013 is fixedly sleeved on the outer wall of the annular base 601. The inner rubber sealing ring 6012 and the outer rubber sealing ring 6013 are used to seal the gaps among the air glass cylinder 606, the annular base 601 and the outer glass cylinder 607.

[0041] The sterilization pipe assembly 7 includes a first sterilization water pipe 701, a sterilization rotating water pipe 702, a second sterilization water pipe 703 and a sterilization drain pipe 704. The first sterilization water pipe 701 is fixedly installed on the first water connection pipe 6010 and the second water connection pipe 6011 at the bottom of the ultraviolet sterilization component 6. One end of the sterilization rotating water pipe 702 is fixedly installed at the top of the sterilization water tank 4, and the other end of the sterilization rotating water pipe 702 is fixedly installed on the second water connection pipe 6011 at the top of the ultraviolet sterilization component 6. The second sterilization water pipe 703 is fixedly installed on the first water connection pipe 6010 and the second water connection pipe 6011 at the top of the ultraviolet sterilization component 6. One end of the sterilization drain pipe 704 is fixedly installed on the first water connection pipe 6010 at the top of the ultraviolet sterilization component 6, and the other end of the sterilization drain pipe 704 extends into the housing 1. The end of the sterilization drain pipe 704 extending into the housing 1 is fixedly installed on the water outlet pipe 3.

[0042] More specifically, a first mounting plate 101 is fixedly arranged inside the housing 1, a second mounting plate 102 is fixedly arranged inside the housing 1, a third mounting plate 103 is fixedly arranged inside the housing 1, and a lifting cushion block 104 is fixedly arranged at the bottom of the housing 1. The control unit includes a display screen 8, a processor 9 and a button group 10. Among them, the display screen 8 is fixedly installed on the top of the housing 1, the processor 9 is fixedly installed on the inner top of the housing 1, and the button group 10 is fixedly installed on the top of the housing 1.

[0043] More specifically, the filtering unit includes a first water delivery pipe 11, a cotton core filter cartridge 12, a water inlet solenoid valve 13 and a booster pump 14. Among them, one end of the first water delivery pipe 11 is threadedly inserted into one end of the cotton core filter cartridge 12, and the other end of the first water delivery pipe 11 extends into the housing 1. The other end of the cotton core filter cartridge 12 is threadedly sleeved on the water outlet pipe 3. The water inlet solenoid valve 13 is fixedly installed on the first water delivery pipe 11. The pump base of the booster pump 14 is fixedly installed in the housing 1, and the working area of the booster pump 14 is fixedly installed on the first water delivery pipe 11. The filtering unit further includes a PP cotton filter core cartridge 15, an activated carbon filter core cartridge 16, a granular carbon filter core cartridge 17 and a first three-way water pipe 18. Among them, the PP cotton filter core cartridge 15 is fixedly installed on the first mounting plate 101, the activated carbon filter core cartridge 16 is fixedly installed on the first mounting plate 101, the granular carbon filter core cartridge 17 is fixedly installed on the first mounting plate 101. The water inlet end of the PP cotton filter core cartridge 15 is fixedly installed on the first water delivery pipe 11. The water inlet end of the activated carbon filter core cartridge 16 is fixedly installed on the water outlet end of the PP cotton filter core cartridge 15. The water inlet end of the granular carbon filter core cartridge 17 is fixedly installed on the water outlet end of the activated carbon filter core cartridge 16. The bottom of the first three-way water pipe 18 is fixedly installed on the water outlet end of the granular carbon filter core cartridge 17.

[0044] The filtering unit further includes a reverse osmosis membrane cylinder 19, a first fixing ring 20, a second three-way water pipe 21, a first one-way valve 22 and a sewage solenoid valve 23. Among them, there are two reverse osmosis membrane cylinders 19, and the two reverse osmosis membrane cylinders 19 are fixedly installed in the first fixing ring 20. The first fixing ring 20 is fixedly installed on the second mounting plate 102. One end of the second three-way water pipe 21 is fixedly installed on the reverse osmosis membrane cylinder 19, and the first one-way valve 22 is fixedly installed on the second three-way water pipe 21 near the reverse osmosis membrane cylinder 19. The other end of the second three-way water pipe 21 extends out of the housing 1, and the sewage solenoid valve 23 is fixedly installed on the second three-way water pipe 21 away from the first one-way valve 22. The filtering unit further includes a four-way water pipe 24, a second one-way valve 25, an activated carbon fiber filter cartridge 26 and a second fixing ring 27. Among them, one end of the four-way water pipe 24 is fixedly installed on the reverse osmosis membrane cylinder 19, and the second one-way valve 25 is fixedly installed on the four-way water pipe 24 near the reverse osmosis membrane cylinder 19. There are two activated carbon fiber filter cartridges 26, and the two activated carbon fiber filter cartridges 26 are both fixedly installed in the second fixing ring 27. The two activated carbon fiber filter cartridges 26 are fixedly installed on the other end of the four-way water pipe 24, and the second fixing ring 27 is fixedly installed on the third mounting plate 103. The filtering unit further includes a third three-way water pipe 28 and a third one-way valve 29. One end of the third three-way water pipe 28 is fixedly installed on the activated carbon fiber filter cartridge 26, and the other end of the third three-way water pipe 28 sequentially penetrates through the third mounting plate 103, the second mounting plate 102 and the first mounting plate 101 and extends into the sterilization water tank 4. The third one-way valve 29 is fixedly installed on the third three-way water pipe 28 near the activated carbon fiber filter cartridge 26.

[0045] Furthermore, the water inlet pipe 2 is connected to an external water pipe. The water inlet solenoid valve 13 and the booster pump 14 are turned on. Water passes through the cotton core filter cartridge 12 from the water inlet pipe 2 for primary filtration, and the water enters the first water delivery pipe 11. The booster pump 14 starts to increase the pressure of the water flow, and then enters the PP cotton filter cartridge 15, the activated carbon filter cartridge 16 and the granular carbon filter cartridge 17 for secondary filtration. After the water flows out of the granular carbon filter cartridge 17, it enters the first three-way water pipe 18, and then enters the two reverse osmosis membrane cylinders 19 through the first three-way water pipe 18. The reverse osmosis membrane cylinder 19 is connected to the second three-way water pipe 21. The sewage solenoid valve 23 is turned on, and the sewage inside the reverse osmosis membrane cylinder 19 is discharged from the second three-way water pipe 21. The reverse osmosis membrane cylinder 19 is connected to the four-way water pipe 24. The reverse osmosis water enters the four-way water pipe 24. The water passes through the second one-way valve 25 on the four-way water pipe 24 and enters the activated carbon fiber filter cartridge 26. After being filtered by the activated carbon fiber filter cartridge 26, the water enters the third three-way water pipe 28. The water passes through the third one-way valve 29, and the third three-way water pipe 28 delivers the filtered water into the sterilization water tank 4.

[0046] The annular base 601, the electrode ring 602, the power connection ring base 603, the filament 604, the inner glass cylinder 605 and the air glass cylinder 606 emit UV-C ultraviolet rays of 254 nm. After the ultraviolet rays pass through the outer glass cylinder 607, they irradiate inside the sterilization water tank 4. The first ultraviolet sterilization area corresponds to the water inside the sterilization water tank 4 and initially sterilizes the water. Water is continuously injected into the sterilization water tank 4, increasing the internal pressure of the sterilization water tank 4. The water inside the sterilization water tank 4 enters the area between the outer layer of the air glass cylinder 606 and the inner layer of the outer glass cylinder 607 through the sterilization transfer water pipe 702. The water enters the second ultraviolet sterilization area. The second ultraviolet sterilization area is within the effective sterilization distance of the ultraviolet ray irradiation. After the water exits the second ultraviolet sterilization area, it enters the inside of the inner glass cylinder 605 through the first sterilization water pipe 701. The water enters the third ultraviolet sterilization area. The third ultraviolet sterilization area is within the effective sterilization distance of the ultraviolet ray irradiation, avoiding uneven sterilization when the water flows, resulting in incomplete sterilization of the water. The water replaces the next set of ultraviolet sterilization components 6 through the second sterilization water pipe 703. Finally, the water flows out from the sterilization drain pipe 704. The sterilization drain pipe 704 is docked with the water outlet pipe 3, and the sterilized water is discharged from the water outlet pipe 3. The water outlet pipe 3 is connected to the water pipe for supplying water.

[0047] In the present invention, the sterilization water tank 4, the inner glass cylinder 605, the air glass cylinder 606 and the outer glass cylinder 607 are divided into the first ultraviolet sterilization area, the second ultraviolet sterilization area and the third ultraviolet sterilization area. The first ultraviolet sterilization area plays the role of initial sterilization. After the water passes through the ultraviolet ray irradiation in the second ultraviolet sterilization area and the third ultraviolet sterilization area, the sterilization effect is effectively improved, ensuring that the water is thoroughly disinfected in multiple stages and avoiding the problem of incomplete sterilization caused by uneven water flow. Through the structural design of the annular base 601, the electrode ring 602, the power connection ring base 603, the filament 604, the inner glass cylinder 605, the air glass cylinder 606 and the outer glass cylinder 607, an ultraviolet lamp tube is formed between the outer layer of the inner glass cylinder 605 and the inner layer of the air glass cylinder 606, and the outer glass cylinder 607 is arranged outside the ultraviolet lamp tube. This design forms the second ultraviolet sterilization area and the third ultraviolet sterilization area, enabling the ultraviolet lamp tube to be closely combined with these areas, thereby ensuring the effective coverage and sterilization effect of the ultraviolet sterilization area.

[0048] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A UV sterilizing device for a water purifier, characterized in that: The invention comprises a housing (1), a control unit, a water inlet pipe (2), a filter unit, a sterilization unit and a water outlet pipe (3), wherein the control unit is fixedly mounted on the top of the housing (1), the water inlet pipe (2) is fixedly mounted on the bottom of the housing (1), the filter unit is fixedly mounted on the inner bottom of the housing (1), the sterilization unit is fixedly mounted on the housing (1), and the water outlet pipe (3) is fixedly mounted on the filter unit; The sterilization unit comprises a sterilization water tank (4), a mesh cover (5), an ultraviolet sterilization component (6) and a sterilization tube component (7), wherein the sterilization water tank (4) is fixedly mounted on the housing (1), two mesh covers (5) are provided, and the two mesh covers (5) are respectively fixedly mounted on the top and bottom of the sterilization water tank (4), both ends of the ultraviolet sterilization component (6) are fixedly mounted on the sterilization water tank (4), and the sterilization tube component (7) is fixedly mounted on the ultraviolet sterilization component (6); The ultraviolet sterilization component (6) comprises an annular base (601), an electrode ring (602), an electric ring seat (603), a filament (604), an inner glass tube (605), an air glass tube (606) and an outer glass tube (607), wherein the annular base (601) is fixedly sleeved on both ends of the inner glass tube (605), the electrode ring (602) is fixedly mounted inside the annular base (601), the electric ring seat (603) is fixedly mounted on the annular base (601), the filament (604) is fixedly mounted on the electrode ring (602), both ends of the air glass tube (606) are fixedly inserted into the annular base (601), and both ends of the outer glass tube (607) are fixedly sleeved on the outer wall of the annular base (601); Power connection grooves (608) are provided on both sides of the outer wall of the power connection ring seat (603).

2. A UV sterilizing device for a water purifier according to claim 1, characterized in that: A first mounting plate (101) is fixedly arranged inside the shell (1), a second mounting plate (102) is fixedly arranged inside the shell (1), a third mounting plate (103) is fixedly arranged inside the shell (1), and a lifting pad (104) is fixedly arranged at the bottom of the shell (1).

3. A UV sterilizing device for a water purifier according to claim 1, characterized in that: The control unit comprises a display screen (8), a processor (9) and a button group (10), wherein the display screen (8) is fixedly mounted on the top of the housing (1), the processor (9) is fixedly mounted on the inner top of the housing (1), and the button group (10) is fixedly mounted on the top of the housing (1).

4. A UV sterilizing device for a water purifier according to claim 1, characterized in that: The filter unit comprises a first water delivery pipe (11), a cotton core filter cartridge (12), a water inlet solenoid valve (13) and a booster pump (14), wherein one end of the first water delivery pipe (11) is threadedly inserted into one end of the cotton core filter cartridge (12), the other end of the first water delivery pipe (11) extends into the housing (1), the other end of the cotton core filter cartridge (12) is threadedly sleeved on the water outlet pipe (3), the water inlet solenoid valve (13) is fixedly mounted on the first water delivery pipe (11), the pump seat of the booster pump (14) is fixedly mounted in the housing (1), and the working area of ​​the booster pump (14) is fixedly mounted on the first water delivery pipe (11).

5. The UV sterilizing device for a water purifier according to claim 1, characterized in that: The filter unit further comprises a PP cotton filter cartridge (15), an activated carbon filter cartridge (16), a granular carbon filter cartridge (17) and a first three-way water pipe (18), wherein the PP cotton filter cartridge (15) is fixedly mounted on the first mounting plate (101), the activated carbon filter cartridge (16) is fixedly mounted on the first mounting plate (101), the granular carbon filter cartridge (17) is fixedly mounted on the first mounting plate (101), the water inlet end of the PP cotton filter cartridge (15) is fixedly mounted on the first water delivery pipe (11), the water inlet end of the activated carbon filter cartridge (16) is fixedly mounted on the water outlet end of the PP cotton filter cartridge (15), the water inlet end of the granular carbon filter cartridge (17) is fixedly mounted on the water outlet end of the activated carbon filter cartridge (16), and the bottom of the first three-way water pipe (18) is fixedly mounted on the water outlet end of the granular carbon filter cartridge (17).

6. A UV sterilizing device for a water purifier according to claim 1, characterized in that: The filtration unit further comprises a reverse osmosis membrane cartridge (19), a first fixing ring (20), a second three-way water pipe (21), a first one-way valve (22) and a sewage discharge solenoid valve (23), wherein two reverse osmosis membrane cartridges (19) are provided, the two reverse osmosis membrane cartridges (19) are fixedly mounted in the first fixing ring (20), the first fixing ring (20) is fixedly mounted on the second mounting plate (102), one end of the second three-way water pipe (21) is fixedly mounted on the reverse osmosis membrane cartridge (19), the first one-way valve (22) is fixedly mounted on one end of the second three-way water pipe (21) close to the reverse osmosis membrane cartridge (19), the other end of the second three-way water pipe (21) extends out of the housing (1), and the sewage discharge solenoid valve (23) is fixedly mounted on one end of the second three-way water pipe (21) away from the first one-way valve (22).

7. A UV sterilizing device for a water purifier according to claim 1, characterized in that: The filtration unit further comprises a four-way water pipe (24), a second one-way valve (25), an activated carbon fiber filter cartridge (26) and a second fixing ring (27), wherein one end of the four-way water pipe (24) is fixedly mounted on the reverse osmosis membrane cartridge (19), the second one-way valve (25) is fixedly mounted on one end of the four-way water pipe (24) close to the reverse osmosis membrane cartridge (19), two activated carbon fiber filter cartridges (26) are provided, both of the two activated carbon fiber filter cartridges (26) are fixedly mounted in the second fixing ring (27), the two activated carbon fiber filter cartridges (26) are fixedly mounted on the other end of the four-way water pipe (24), and the second fixing ring (27) is fixedly mounted on the third mounting plate (103).

8. The UV sterilizing device for a water purifier according to claim 1, characterized in that: The filter unit also includes a third three-way water pipe (28) and a third one-way valve (29), one end of the third three-way water pipe (28) is fixedly mounted on the activated carbon fiber filter cartridge (26), the other end of the third three-way water pipe (28) passes through the third mounting plate (103), the second mounting plate (102) and the first mounting plate (101) in sequence and extends into the sterilization water tank (4), and the third one-way valve (29) is fixedly mounted on one end of the third three-way water pipe (28) close to the activated carbon fiber filter cartridge (26).

9. A UV sterilizing device for a water purifier according to claim 1, characterized in that: The ultraviolet sterilization component (6) also includes a sealing column (609), a first water receiving pipe (6010), a second water receiving pipe (6011), an inner rubber sealing ring (6012) and an outer rubber sealing ring (6013), wherein the sealing column (609) is fixedly mounted on the inner top and inner bottom of the inner glass cylinder (605), the first water receiving pipe (6010) is fixedly inserted in the sealing column (609), the second water receiving pipe (6011) is fixedly mounted on the upper and lower ends of the outer glass cylinder (607), the inner rubber sealing ring (6012) is fixedly sleeved on the outer wall of the gas glass cylinder (606), and the outer rubber sealing ring (6013) is fixedly sleeved on the outer wall of the annular base (601).

10. The UV sterilizing device for a water purifier according to claim 1, characterized in that: The sterilization pipe assembly (7) comprises a first sterilization water pipe (701), a sterilization water transfer pipe (702), a second sterilization water pipe (703) and a sterilization drainage pipe (704); the first sterilization water pipe (701) is fixedly mounted on a first water receiving pipe (6010) and a second water receiving pipe (6011) at the bottom of the ultraviolet sterilization assembly (6); one end of the sterilization water transfer pipe (702) is fixedly mounted on the top of the sterilization water tank (4); and the other end of the sterilization water transfer pipe (702) is fixedly mounted on the top of the ultraviolet sterilization assembly (6). The second sterilizing water pipe (703) is fixedly mounted on the first water receiving pipe (6010) and the second water receiving pipe (6011) at the top of the ultraviolet sterilizing component (6); one end of the sterilizing drainage pipe (704) is fixedly mounted on the first water receiving pipe (6010) at the top of the ultraviolet sterilizing component (6); the other end of the sterilizing drainage pipe (704) extends into the housing (1); and the end of the sterilizing drainage pipe (704) extending into the housing (1) is fixedly mounted on the water outlet pipe (3).

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