Dual-wavelength ultraviolet disinfection equipment

Abstract

The utility model discloses dual-wavelength ultraviolet disinfection equipment and relates to the technical field of water treatment. The dual-wavelength ultraviolet disinfection equipment comprises a shell, a dual-wavelength ultraviolet lamp, a transmission tube, a fixing assembly and an ozone exhaust connector; a gap is formed between the transmission tube and the dual-wavelength ultraviolet lamp, the gap forms an ozone generation channel, and the dual-wavelength ultraviolet lamp is used for generating ultraviolet rays of a first wavelength and ultraviolet rays of a second wavelength; and a water treatment cavity is formed between the transmission tube and the inner wall of the shell. According to the dual-wavelength ultraviolet disinfection equipment disclosed by the utility model, the ultraviolet rays with the second wavelength can be used for directly irradiating a water body to achieve a disinfection effect, and the generated ultraviolet rays with the first wavelength can be in contact with air to generate ozone, so that ozone disinfection can be further carried out on the water body and organic pollutants in the water can be removed; and moreover, an ozone generator does not need to be additionally arranged, so that the disinfection cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a dual-wavelength ultraviolet disinfection device. Background Technology

[0002] Traditionally, swimming pool water treatment primarily employs chemical methods to disinfect and remove contaminants. However, chemical methods may leave residues that could adversely affect human health. Ultraviolet (UV) disinfection, as a physical disinfection method, effectively kills pathogens in water without producing chemical byproducts. In particular, UV-C ultraviolet light with a wavelength of 254nm has a strong bactericidal effect. Based on the development of UV disinfection technology, some UV disinfection devices based on this principle have gradually appeared on the market for disinfecting swimming pool water. Currently, common UV disinfection devices typically use 254nm ultraviolet light to treat water for disinfection. Disinfection using this single wavelength UV disinfection device often has poor effectiveness and fails to meet disinfection requirements. To further improve water treatment efficiency, an ozone generator is added to the UV disinfection device. The ozone generated by the ozone generator further treats the water. However, the equipment cost and maintenance costs of ozone generators are relatively high, further increasing disinfection costs. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to propose a dual-wavelength ultraviolet disinfection device that can achieve the dual disinfection effect of ultraviolet disinfection and ozone disinfection, without the need for an external ozone generator, which can effectively reduce disinfection costs and solve the problems of poor disinfection effect and high disinfection cost of existing ultraviolet disinfection devices.

[0004] To solve the above-mentioned technical problems, this utility model provides a dual-wavelength ultraviolet disinfection device, including a shell, a dual-wavelength ultraviolet lamp, a transmission tube, a fixing component and an ozone exhaust connector;

[0005] The dual-wavelength ultraviolet lamp and the transmission tube are both installed in the inner cavity of the housing. The transmission tube is sleeved on the outside of the dual-wavelength ultraviolet lamp, and there is a gap between the transmission tube and the dual-wavelength ultraviolet lamp. The gap forms an ozone generation channel. The dual-wavelength ultraviolet lamp is used to generate ultraviolet light of a first wavelength and ultraviolet light of a second wavelength. The first wavelength ultraviolet light is used to react with air to generate ozone, and the second wavelength ultraviolet light is used to disinfect the water to be treated.

[0006] The housing has a first connecting end and a second connecting end on both sides respectively. The fixing component is connected to the first connecting end. The fixing component has a vent hole. The input end of the vent hole is connected to the outside air. The output end of the vent hole is connected to the ozone generation channel. The ozone exhaust connector is connected to the second connecting end, and the input end of the ozone exhaust connector is connected to the ozone generation channel.

[0007] A water treatment cavity is formed between the transmission tube and the inner wall of the housing. The outer side of the housing is provided with a water inlet connector and a water outlet connector, which are respectively connected to the water treatment cavity.

[0008] As an improvement to the above technical solution, the dual-wavelength ultraviolet disinfection device further includes an elastic element and a second connecting element;

[0009] One end of the second connector is connected to the second connection end, and the other end of the second connector is connected to the ozone exhaust connector;

[0010] One end of the elastic element is connected to the second connector, and the other end is connected to the end of the dual-wavelength ultraviolet lamp away from the fixing component. The elastic element is located inside the transmission tube and is used to press the dual-wavelength ultraviolet lamp towards the side closer to the fixing component. The side of the dual-wavelength ultraviolet lamp closer to the fixing component is engaged with the fixing component.

[0011] As an improvement to the above technical solution, the fixing component includes a first connector, the first connector includes a first connecting part and an annular limiting part, the annular limiting part is installed inside the first connector, the first connecting part is connected to a first connecting end, and the first connecting part is provided with the vent hole;

[0012] The dual-wavelength ultraviolet lamp is connected to the ballast at one end with an electrical connector, which is engaged with the annular limiting part.

[0013] As an improvement to the above technical solution, the side of the electrical connector used to connect with the ballast is provided with a snap-fit ​​part, and the diameter of the snap-fit ​​part gradually decreases along the direction closer to the ballast;

[0014] The annular limiting part has a through hole at its center that mates with the snap-fit ​​part, and one side of the snap-fit ​​part passes through the through hole and snaps into the annular limiting part.

[0015] As an improvement to the above technical solution, the fixing component further includes a locking member and a fastener. One end of the locking member is connected to the first connecting portion, and the other end of the locking member is connected to the fastener. The end of the locking member away from the fastener abuts against the limiting portion.

[0016] As an improvement to the above technical solution, the locking member includes a second connecting part and a second limiting part. The second limiting part is disposed outside the second connecting part. One end of the second connecting part is connected to the first connecting part, and the other end of the second connecting part is connected to the fastener. Both sides of the second limiting part abut against the first connecting part and the fastener, respectively.

[0017] As an improvement to the above technical solution, the interior of the housing is provided with a first baffle and a second baffle, the first baffle and the second baffle are respectively connected to the inner wall of the housing, and the positions of the first baffle and the second baffle correspond to the positions of the water inlet connector and the water outlet connector, respectively.

[0018] As an improvement to the above technical solution, the distance between the transmission tube and the dual-wavelength ultraviolet lamp is 3mm to 10mm.

[0019] As an improvement to the above technical solution, a first sealing ring is provided between the first connecting end and the transmission tube, and a second sealing ring is provided between the second connecting end and the transmission tube.

[0020] As an improvement to the above technical solution, the dual-wavelength ultraviolet lamp is electrically connected to an external ballast to generate ultraviolet light of the first wavelength and ultraviolet light of the second wavelength. The first wavelength ultraviolet light is 185nm ultraviolet light, and the second wavelength ultraviolet light is 254nm ultraviolet light.

[0021] Implementing this utility model has the following beneficial effects: By adopting dual-wavelength ultraviolet lamps and optimizing the structure of the equipment, the dual-wavelength ultraviolet disinfection equipment can directly generate ozone by reacting ultraviolet light with air using the first wavelength to disinfect water, without the need for an external ozone generator. It can also directly disinfect water using the second wavelength of ultraviolet light, achieving a dual disinfection effect of ultraviolet disinfection and ozone disinfection. This not only achieves efficient and environmentally friendly disinfection and removal of pollutants, but also effectively reduces disinfection costs because no external ozone generator is required. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a dual-wavelength ultraviolet disinfection device in one embodiment of the present invention;

[0023] Figure 2 yes Figure 1 The cross-sectional view of the dual-wavelength ultraviolet disinfection device at point AA is shown.

[0024] Figure 3 yes Figure 2 The enlarged view of the dual-wavelength ultraviolet disinfection device at the first connection end is shown.

[0025] Figure 4 yes Figure 2 An enlarged view of the dual-wavelength ultraviolet disinfection device at the second connection end;

[0026] Figure 5 yes Figure 1 The diagram shows the internal structure of the housing in the dual-wavelength ultraviolet disinfection device.

[0027] Figure 6 yes Figure 1 A schematic diagram of the structure of the first connector in the dual-wavelength ultraviolet disinfection device shown;

[0028] Figure 7 yes Figure 6 The first connector shown is a cross-sectional view at the vent.

[0029] In the diagram: 1. Housing; 2. Dual-wavelength UV lamp; 3. Transmission tube; 4. Ballast; 5. Fixing assembly; 6. Ozone exhaust connector; 7. Elastic component; 8. Second connector; 11. Water inlet connector; 12. Water outlet connector; 13. First baffle; 14. Second baffle; 15. First connecting end; 16. Second connecting end; 17. Water treatment chamber; 18. Ozone generation channel; 21. Electrical connector; 51. First connector; 52. Locking component; 53. Fastener; 91. First sealing ring; 92. Second sealing ring; 211. Snap-fit ​​part; 511. First connecting part; 512. Annular limiting part; 521. Second connecting part; 522. Second limiting part; 5111. Vent hole; 5121. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figures 1 to 7 As shown, this embodiment discloses a dual-wavelength ultraviolet disinfection device, including a housing 1, a dual-wavelength ultraviolet lamp 2, a transmission tube 3, a fixing component 5, and an ozone exhaust connector 6.

[0034] The dual-wavelength ultraviolet lamp 2 and the transmission tube 3 are both installed inside the housing 1. The transmission tube 3 is sleeved outside the dual-wavelength ultraviolet lamp 2, and a gap is provided between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2. The gap forms an ozone generation channel 18. The dual-wavelength ultraviolet lamp 2 is electrically connected to an external ballast 4 to generate ultraviolet light of the first wavelength and ultraviolet light of the second wavelength. The ballast 4 can provide a stable operating voltage and current for the dual-wavelength ultraviolet lamp 2 to ensure that the dual-wavelength ultraviolet lamp 2 can emit light normally and generate ultraviolet light. The first wavelength ultraviolet light is ultraviolet light that can react with air to generate ozone, and the second wavelength ultraviolet light is ultraviolet light that can disinfect the water to be treated. More preferably, the first wavelength ultraviolet light is ultraviolet light with a wavelength of 185nm (hereinafter referred to as 185nm ultraviolet light), and the second wavelength ultraviolet light is ultraviolet light with a wavelength of 254nm (hereinafter referred to as 254nm ultraviolet light).

[0035] The housing 1 has a first connecting end 15 and a second connecting end 16 on both sides respectively. The fixing component 5 is connected to the first connecting end 15. The fixing component 5 has a vent 5111. The input end of the vent 5111 is connected to the outside air, and the output end of the vent 5111 is connected to the ozone generation channel 18. The ozone exhaust connector 6 is connected to the second connecting end 16, and the input end of the ozone exhaust connector 6 is connected to the ozone generation channel 18.

[0036] A water treatment chamber 17 is formed between the transmission tube 3 and the inner wall of the housing 1. The outer side of the housing 1 is provided with a water inlet connector 11 and a water outlet connector 12, which are respectively connected to the water treatment chamber 17.

[0037] It is worth noting that by employing a dual-wavelength ultraviolet lamp 2 capable of generating both 185nm and 254nm ultraviolet light simultaneously, and through structural optimization of the equipment, this embodiment of the dual-wavelength ultraviolet disinfection device not only uses 254nm ultraviolet light to directly irradiate the water for disinfection, but also generates ozone through contact with air using the 185nm ultraviolet light. This ozone, when introduced into the water, further disinfects the water and removes organic pollutants. The dual-wavelength ultraviolet disinfection device of this embodiment can perform both ultraviolet and ozone disinfection on swimming pool water, achieving a dual disinfection effect. This effectively enhances the disinfection effect and removes pollutants from the water, and eliminates the need for an external ozone generator, thus significantly reducing disinfection costs.

[0038] In one embodiment, the dual-wavelength ultraviolet disinfection equipment operates as follows: Before disinfection, the inlet connector 11 is connected to the water supply pipeline, the outlet connector 12 is connected to an external transfer tank or transfer pool, the output end of the ozone exhaust connector 6 is connected to the input end of an external air pump, and the output end of the air pump is connected to the water supply pipeline. When disinfecting the water to be treated (which may be used swimming pool wastewater), the ballast 4 is connected to a power source to turn on the dual-wavelength ultraviolet lamp 2, generating 185nm and 254nm ultraviolet rays. The air pump is started, and external air enters the ozone generation channel 18 through the vent 5111. In the ozone generation channel 18, the 185nm ultraviolet rays emitted by the dual-wavelength ultraviolet lamp 2 react with oxygen molecules in the air to generate ozone. The ozone moves through the ozone generation channel 18 to the ozone exhaust connector 6, and under the action of the air pump, the ozone is introduced into the water supply pipeline. The ozone disinfects the water, killing bacteria and removing organic pollutants from the water. After ozone disinfection, the water enters the water treatment chamber 17 through the water inlet connector 11 via the water transport pipe. The 254nm ultraviolet light generated by the dual-wavelength ultraviolet lamp 2 irradiates the water treatment chamber 17 through the transmission tube 3. At this time, the water entering the water treatment chamber 17 is fully exposed to the 254nm ultraviolet light. The 254nm ultraviolet light can further disinfect the ozone-disinfected water. The water disinfected by the 254nm ultraviolet light is output to the transfer tank or transfer pool through the water outlet connector 12, thereby achieving a dual disinfection effect.

[0039] In addition, the output end of the air pump can also be connected to a transfer tank or transfer pool. In this implementation method, the water to be treated is directly introduced into the water treatment chamber 17, and the water to be treated is disinfected by 254nm ultraviolet light. The water after ultraviolet disinfection is output to the transfer tank or transfer pool through the water outlet connector 12. At the same time, the ozone generated in the ozone generation channel 18 is introduced into the water after ultraviolet disinfection to further disinfect the water with ozone, thereby achieving a dual disinfection effect.

[0040] Specifically, the dual-wavelength ultraviolet lamp 2 used in this embodiment is an ultraviolet lamp capable of generating 185nm and 254nm ultraviolet rays. The 254nm ultraviolet rays generated by the dual-wavelength ultraviolet lamp 2 disinfect the water, while the generated 185nm ultraviolet rays combine with air to form ozone. This ozone is then injected into the water for ozone disinfection and treatment of pollutants such as algae. This achieves efficient and environmentally friendly disinfection, solving the problems of chemical residues and potential byproducts associated with chemical disinfection and pollutant treatment. Furthermore, the dual-wavelength ultraviolet disinfection method in this embodiment eliminates the need for an ozone generator, reducing equipment and operating costs, and consequently lowering the overall disinfection cost.

[0041] Preferably, the material of the transmission tube 3 is selected to allow ultraviolet light to pass through, so that the water to be treated entering the water treatment chamber 17 can be fully exposed to ultraviolet light to achieve a better disinfection effect.

[0042] In one embodiment, the transmission tube 3 is a glass tube.

[0043] Preferably, the positions of the water inlet connector 11 and the water outlet connector 12 correspond to the positions on both sides of the dual-wavelength ultraviolet lamp 2, so that the water passes through the ultraviolet lamp for a longer distance, thereby increasing the time the water is exposed to ultraviolet light and further improving the disinfection effect and efficiency.

[0044] In one embodiment, the dual-wavelength ultraviolet disinfection device further includes an elastic element 7 and a second connecting element 8;

[0045] One end of the second connector 8 is connected to the second connector 16, and the other end of the second connector 8 is connected to the ozone exhaust connector 6;

[0046] One end of the elastic element 7 is connected to the second connecting element 8, and the other end is connected to the end of the dual-wavelength ultraviolet lamp 2 away from the fixing component 5. The elastic element 7 is located inside the transmission tube 3. The elastic element 7 is used to press the dual-wavelength ultraviolet lamp 2 towards the side closer to the fixing component 5. The side of the dual-wavelength ultraviolet lamp 2 close to the fixing component 5 is engaged with the fixing component 5. Through the cooperation of the second connecting element 8, the elastic element 7 and the fixing component 5, the dual-wavelength ultraviolet lamp 2 is fixedly installed in the inner cavity of the housing 1.

[0047] More preferably, the elastic element 7 can be a spring, which is compressed inside the transmission tube 3, thereby pressing the dual-wavelength ultraviolet lamp 2 toward the side closer to the fixing component 5.

[0048] In one embodiment, the fixing component 5 includes a first connector 51, the first connector 51 includes a first connecting portion 511 and an annular limiting portion 512, the annular limiting portion 512 is installed inside the first connector 51, the first connecting portion 511 is connected to a first connecting end 15, and the first connecting portion 511 is provided with the vent hole 5111.

[0049] The dual-wavelength ultraviolet lamp 2 is connected to the ballast 4 at one end with an electrical connector 21. The electrical connector 21 is engaged with the annular limiting part 512. Through the cooperation of the elastic member 7 and the first connecting member 51, the dual-wavelength ultraviolet lamp 2 is fixed in the inner cavity of the housing 1.

[0050] In one embodiment, the electrical connector 21 has a snap-fit ​​portion 211 on the side for connecting to the ballast 4, and the diameter of the snap-fit ​​portion 211 gradually decreases in the direction close to the ballast 4.

[0051] The annular limiting part 512 has a through hole 5121 at its center that cooperates with the snap-fit ​​part 211. One side of the snap-fit ​​part 211 passes through the through hole 5121 and snaps into the annular limiting part 512.

[0052] The cooperation between the annular limiting part 512 and the electrical connector 21 not only restricts the position of the dual-wavelength ultraviolet lamp 2 and fixes it in the inner cavity of the housing 1, but also allows the inner cavity of the first connector 51 to form two non-communicating areas on both sides of the annular limiting part 512. This ensures that external air can only enter the ozone generation channel 18 through the vent 5111, and the ozone generated in the ozone generation channel 18 will not leak to the outside through the opening of the first connector 15.

[0053] More preferably, a plurality of vent holes 5111 are provided, and the plurality of vent holes 5111 are circumferentially distributed and spaced apart at the first connecting portion 511.

[0054] In one embodiment, the fixing component 5 further includes a locking member 52 and a fastener 53. One end of the locking member 52 is connected to the first connecting portion 511, and the other end of the locking member 52 is connected to the fastener 53. The end of the locking member 52 away from the fastener 53 abuts against the limiting portion 512. The cooperation of the locking member 52 and the fastener 53 further fixes the position of the first connecting member 51, ensuring that the dual-wavelength ultraviolet lamp 2 is securely installed inside the housing 1, preventing it from loosening during use. Furthermore, the fixing component also protects the electrical connector 21, ensuring the stability and safety of the electrical connection.

[0055] In one embodiment, the locking member 52 includes a second connecting portion 521 and a second limiting portion 522. The second limiting portion 522 is disposed outside the second connecting portion 521. One end of the second connecting portion 521 is connected to the first connecting portion 511, and the other end of the second connecting portion 521 is connected to the fastener 53. The two sides of the second limiting portion 522 abut against the first connecting portion 511 and the fastener 53, respectively, making the connection relationship between the first connecting member 51, the locking member 52 and the fastener 53 more reliable, better fixing and protecting the dual-wavelength ultraviolet lamp 2, and keeping the two sides of the annular limiting portion 512 always separated, thereby blocking the opening of the first connecting end 15 and preventing ozone leakage.

[0056] In one embodiment, the housing 1 is provided with a first baffle 13 and a second baffle 14 inside. The first baffle 13 and the second baffle 14 are respectively connected to the inner wall of the housing 1, and the positions of the first baffle 13 and the second baffle 14 correspond to the positions of the water inlet connector 11 and the water outlet connector 12, respectively. The first baffle 13 and the second baffle 14 can buffer and protect the transmission tube 3, preventing the water flow from directly impacting the transmission tube 3 during water intake and avoiding damage to the transmission tube 3.

[0057] In one embodiment, the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2 is 3mm to 10mm. By limiting the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2, an effective ozone generation and conduction channel, namely ozone generation channel 18, can be formed in the gap between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2. Ozone generation channel 18 enables the 185nm ultraviolet light emitted by the dual-wavelength ultraviolet lamp 2 to effectively react with oxygen molecules in the air to generate ozone. Furthermore, by controlling the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2 to 3mm to 10mm, sufficient space is provided for the generation and accumulation of ozone, and the generated ozone can be more smoothly introduced into the water body.

[0058] Specifically, a limiting structure can be used to control the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2 to 3mm to 10mm; alternatively, the positions of the transmission tube 3 and the dual-wavelength ultraviolet lamp 2 can be fixed respectively, thereby controlling the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2 to 3mm to 10mm; in addition, other existing methods can be used to control the distance between the transmission tube 3 and the dual-wavelength ultraviolet lamp 2.

[0059] In one embodiment, a first sealing ring 91 is provided between the first connecting end 15 and the transmission tube 3, and a second sealing ring 92 is provided between the second connecting end 16 and the transmission tube 3. Through the action of the first sealing ring 91 and the second sealing ring 92, not only can the ozone generation channel 18 and the water treatment chamber 17 be completely isolated, but the transmission tube 3 can also be fixed in place.

[0060] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A dual-wavelength ultraviolet disinfection device, characterized in that, Includes housing, dual-wavelength ultraviolet lamp, transmission tube, mounting components, and ozone exhaust connector; The dual-wavelength ultraviolet lamp and the transmission tube are both installed in the inner cavity of the housing. The transmission tube is sleeved on the outside of the dual-wavelength ultraviolet lamp, and there is a gap between the transmission tube and the dual-wavelength ultraviolet lamp. The gap forms an ozone generation channel. The dual-wavelength ultraviolet lamp is used to generate ultraviolet light of a first wavelength and ultraviolet light of a second wavelength. The first wavelength ultraviolet light is used to react with air to generate ozone, and the second wavelength ultraviolet light is used to disinfect the water to be treated. The housing has a first connecting end and a second connecting end on both sides respectively. The fixing component is connected to the first connecting end. The fixing component has a vent hole. The input end of the vent hole is connected to the outside air. The output end of the vent hole is connected to the ozone generation channel. The ozone exhaust connector is connected to the second connecting end, and the input end of the ozone exhaust connector is connected to the ozone generation channel. A water treatment cavity is formed between the transmission tube and the inner wall of the housing. The outer side of the housing is provided with a water inlet connector and a water outlet connector, which are respectively connected to the water treatment cavity.

2. The dual-wavelength ultraviolet disinfection device according to claim 1, characterized in that, The dual-wavelength ultraviolet disinfection device also includes an elastic component and a second connecting component; One end of the second connector is connected to the second connection end, and the other end of the second connector is connected to the ozone exhaust connector; One end of the elastic element is connected to the second connector, and the other end is connected to the end of the dual-wavelength ultraviolet lamp away from the fixing component. The elastic element is located inside the transmission tube and is used to press the dual-wavelength ultraviolet lamp towards the side closer to the fixing component. The side of the dual-wavelength ultraviolet lamp closer to the fixing component is engaged with the fixing component.

3. The dual-wavelength ultraviolet disinfection device according to claim 2, characterized in that, The fixing component includes a first connector, which includes a first connecting part and an annular limiting part. The annular limiting part is installed inside the first connector. The first connecting part is connected to a first connecting end. The first connecting part is provided with the vent hole. The dual-wavelength ultraviolet lamp is connected to the ballast at one end with an electrical connector, which is engaged with the annular limiting part.

4. The dual-wavelength ultraviolet disinfection device according to claim 3, characterized in that, The electrical connector has a snap-fit ​​part on the side for connecting to the ballast, and the diameter of the snap-fit ​​part gradually decreases along the direction closer to the ballast; The annular limiting part has a through hole at its center that mates with the snap-fit ​​part, and one side of the snap-fit ​​part passes through the through hole and snaps into the annular limiting part.

5. The dual-wavelength ultraviolet disinfection device according to claim 4, characterized in that, The fixing component further includes a locking member and a fastener. One end of the locking member is connected to the first connecting portion, and the other end of the locking member is connected to the fastener. The end of the locking member away from the fastener abuts against the limiting portion.

6. The dual-wavelength ultraviolet disinfection device according to claim 5, characterized in that, The locking member includes a second connecting part and a second limiting part. The second limiting part is located outside the second connecting part. One end of the second connecting part is connected to the first connecting part, and the other end of the second connecting part is connected to the fastener. Both sides of the second limiting part abut against the first connecting part and the fastener, respectively.

7. The dual-wavelength ultraviolet disinfection device according to claim 1, characterized in that, The housing is provided with a first baffle and a second baffle, which are respectively connected to the inner wall of the housing, and the positions of the first baffle and the second baffle correspond to the positions of the water inlet connector and the water outlet connector, respectively.

8. The dual-wavelength ultraviolet disinfection device according to claim 1, characterized in that, The distance between the transmission tube and the dual-wavelength ultraviolet lamp is 3mm to 10mm.

9. The dual-wavelength ultraviolet disinfection device according to claim 1, characterized in that, A first sealing ring is provided between the first connecting end and the transmission tube, and a second sealing ring is provided between the second connecting end and the transmission tube.

10. The dual-wavelength ultraviolet disinfection device according to claim 1, characterized in that, The dual-wavelength ultraviolet lamp is electrically connected to an external ballast to generate ultraviolet light of the first wavelength and ultraviolet light of the second wavelength. The first wavelength ultraviolet light is 185nm ultraviolet light, and the second wavelength ultraviolet light is 254nm ultraviolet light.

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