Ultraviolet sterilization module

Abstract

The utility model discloses an ultraviolet sterilization module which comprises a module shell, the outer side of the module shell is sleeved with a first sealing ring, the first sealing ring is used for radial sealing between the module shell and a liquid container, the module shell is provided with an installation groove and a light outlet hole which are communicated with each other, and the side wall of the installation groove is provided with a first fastening structure; the light source assembly is arranged in the mounting groove, and the light emitting side of the light source assembly is opposite to the light emitting hole; the quartz glass is arranged on the light emitting side of the light source assembly, and a second sealing ring is arranged between the quartz glass and the groove bottom of the mounting groove; and the module support is inserted into the mounting groove and abuts against the backlight side of the light source assembly, and a second fastening structure matched with the first fastening structure is arranged on the outer side of the module support. The waterproof structure is improved, the first sealing ring is arranged in the radial direction to prevent water in the liquid container from seeping to the outside, the second sealing ring is arranged in the module to prevent water from seeping into the module, and the structure is simple and compact.

Description

Technical Field

[0001] The utility model relates to the technical field of ultraviolet sterilization, in particular to an ultraviolet sterilization module. Background Art

[0002] As a non-contact physical sterilization method, ultraviolet light does not require any chemical agents and does not produce any side effects. It has the superior performance of environmental protection and high efficiency. Therefore, ultraviolet technology is widely used in water treatment.

[0003] At present, the light source emitted by the existing ultraviolet sterilization module needs to be scattered through quartz glass. However, limited by the structure of quartz glass, when used in a water environment, there is a problem of sealing leakage in the LED lamp, and insufficient structural compactness is likely to cause water leakage and pose a safety hazard. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an ultraviolet sterilization module, aiming to improve the waterproof structure of the sterilization module to avoid water leakage caused by insufficient structural compactness.

[0005] To achieve the above purpose, the utility model provides an ultraviolet sterilization module, including: a module housing for being installed in a liquid container, a first sealing ring is sleeved outside the module housing, the first sealing ring is used for radial sealing between the module housing and the liquid container, and an installation groove and a light outlet hole communicating with each other are formed in the module housing, and a first fastening structure is arranged on the side wall of the installation groove; a light source assembly for providing a light source, which is arranged in the installation groove, and the light-emitting side of the light source assembly faces the light outlet hole; a quartz glass for scattering the light source, which is arranged on the light-emitting side of the light source assembly, and a second sealing ring is arranged between the quartz glass and the installation groove; a module bracket for pressing the light source assembly, the quartz glass, and the second sealing ring, the module bracket is inserted into the installation groove and abuts against the backlight side of the light source assembly, and a second fastening structure cooperating with the first fastening structure is arranged on the outside of the module bracket;

[0006] The first fastening structure and the second fastening structure are thread structures.

[0007] Optionally, the light source assembly includes a substrate and lamp beads arranged on one side of the substrate, and the wavelength range of the ultraviolet light emitted by the lamp beads is 245nm to 345nm.

[0008] Optionally, an annular fastening gasket is arranged between the light source assembly and the quartz glass.

[0009] Optionally, the material of the fastening gasket is polytetrafluoroethylene.

[0010] Optionally, a first sealing ring limiting groove for accommodating the first sealing ring is formed on the outer side of the module housing, and a second sealing ring limiting groove for accommodating the second sealing ring is formed in the installation groove.

[0011] Optionally, a plurality of the first sealing rings may be provided.

[0012] Optionally, a waterproof convex ring is further protruded on the outer side of the module housing.

[0013] Optionally, the quartz glass is of a cylindrical structure, and the thickness range of the quartz glass is 1 mm to 2 mm.

[0014] Optionally, a heat conduction groove for heat conduction of the light source assembly is formed in the module bracket, a sealant is coated on the inner surface of the heat conduction groove, and a charging port communicating with the heat conduction groove is further formed at one end of the module bracket.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The first sealing ring on the outer side of the module bracket protects against the risk of liquid leakage from the liquid container in radial sealing. In addition, a plurality of first sealing rings may be provided to achieve a multiple protection effect. The existing annular sealing rings are divided into flat gaskets and O-rings. Flat gaskets are mostly used for axial sealing, while O-rings can be used for axial or radial sealing. In this embodiment, the first sealing ring and the module housing are in radial sealing. Since the material of the liquid container (such as a water tank) usually adopts PVC-like materials, concave points and burrs are easily generated during the processing process. Using an axial sealing gasket will cause deformation and leakage. The radial sealing ring can overcome this problem, is not restricted by the requirements of the shaft, and prevents the liquid in the liquid container from leaking to the outside, improving the reliability and safety of the module.

[0017] In addition, the first fastening structure and the second fastening structure are thread structures, that is, the module bracket is screwed into the module housing and provides a pressing force towards the light-emitting hole direction for the light source assembly, thereby completing the compression of the quartz glass and the second sealing ring to seal the inside of the ultraviolet sterilization module.

[0018] At the same time, the quartz glass is of a cylindrical structure with a thickness range of 1 mm - 2 mm, effectively maintaining the compressive strength while ensuring the sterilization effect. The space occupied by the structure is reduced, and the overall compactness of the structure is improved. In addition, the fastening is of an annular structure, which can not only fix and limit the lamp board, but also reflect light. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the ultraviolet sterilization module according to an embodiment of the present invention;

[0021] Figure 2 It is a schematic exploded view of the ultraviolet sterilization module according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic cross-sectional view of the ultraviolet sterilization module according to an embodiment of the present invention.

[0023] Explanation of the reference numerals in the drawings:

[0024] Module housing 1; mounting groove 11; light outlet hole 12; first fastening structure 13; first sealing ring limiting groove 14; second sealing ring limiting groove 15; waterproof convex ring 16;

[0025] Light source assembly 2; substrate 2a; lamp beads 2b;

[0026] Quartz glass 3;

[0027] Module bracket 4; second fastening structure 41; heat conduction groove 42; charging port 43;

[0028] First sealing ring 5; second sealing ring 6; fastening gasket 7.

[0029] The realization of the object, functional features and advantages of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back, etc.) involved in the embodiments of the present utility model, then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0033] Referring to Figures 1 to 3 , the present utility model provides an ultraviolet sterilization module, including: a module housing 1 for being installed in a liquid container. A first sealing ring 5 is sleeved outside the module housing 1, and the first sealing ring 5 is used for radial sealing between the module housing 1 and the liquid container. An installation groove 11 and a light-emitting hole 12 that communicate with each other are formed in the module housing 1, and a first fastening structure 13 is arranged on the side wall of the installation groove 11; a light source assembly 2 for providing a light source is arranged in the installation groove 11, and the light-emitting side of the light source assembly 2 faces the light-emitting hole 12; a quartz glass 3 for scattering the light source is arranged on the light-emitting side of the light source assembly 2, and a second sealing ring 6 is arranged between the quartz glass 3 and the installation groove 11; a module bracket 4 for pressing the light source assembly 2, the quartz glass 3, and the second sealing ring 6. The module bracket 4 is inserted into the installation groove 11 and abuts against the backlight side of the light source assembly 2, and a second fastening structure 41 that cooperates with the first fastening structure 13 is arranged on the outside of the module bracket 4.

[0034] Specifically, the module housing 1 and the module bracket 4 are both cylindrical structures. The cylindrical structure can help the light source assembly 2 to radiate ultraviolet rays evenly. At the same time, the cylindrical structure is usually easier to install and integrate into a liquid container, taking up less space, making the overall device more compact and easier to maintain. The mounting groove 11 is a cylindrical through groove with one end open, and the inner diameter of the mounting groove 11 is slightly larger than the outer diameter of the module bracket 4, so as to reserve sufficient assembly space for the installation of the module bracket 4. The light outlet hole 12 is a circular through hole, located at the bottom of the mounting groove 11, that is, on the side away from the opening of the mounting groove 11. A focusing plate is also arranged on the outside of the light outlet hole 12. The focusing plate is a hexagonal frame, which is arranged close to the light outlet side edge of the light outlet hole 12 to reduce light scattering and improve the focusing effect.

[0035] Among them, the first fastening structure 13 and the second fastening structure 41 on the module housing 1 and the module bracket 4 can adopt a variety of different forms according to specific needs, such as a threaded structure, and the module bracket 4 is screwed into the installation groove 11 through the threaded cooperation between the module housing 1 and the module bracket 4 to achieve rotation and tightening. As another optional embodiment, the first fastening structure 13 and the second fastening structure 41 can also be a fast assembly structure of a buckle or a hole. As another optional embodiment, the first fastening structure 13 and the second fastening structure 41 can also be a matching structure of a guide groove or a guide protrusion. By setting a protrusion and a corresponding groove on the module bracket 4 and the module housing 1, it is ensured that they can be accurately positioned and firmly connected.

[0036] Furthermore, the first sealing ring 5 is an O-shaped rubber ring, which is sleeved on the outer side of the module housing 1 and has an interference fit with the module housing 1. Existing annular sealing rings are divided into flat pads and O-shaped rubber rings. Flat pads are mostly used for axial sealing, while O-shaped rubber rings can be used for axial or radial sealing. Axial sealing refers to the use of a flat pad sealing ring to sleeve on the axis of the module housing 1 and against the inner wall side of the liquid container after the module housing 1 is loaded into the liquid container. Since the material of the liquid container (such as a water tank) is usually made of PVC, it is easy to produce pits and burrs during the processing process. The use of an axial sealing gasket will cause deformation and leakage. In this embodiment, there is a radial seal between the first sealing ring 5 and the module housing 1. The radial sealing ring can overcome this problem, is not limited by the requirements of the shaft, prevents the risk of liquid in the liquid container leaking to the outside, and improves the reliability and safety of the module.

[0037] As an example, an installation position (such as a cylindrical boss) is provided on the liquid container. The module housing 1 is inserted into the installation position by means of threads or the like, and the light-emitting hole 12 of the module housing 1 faces the inside of the liquid container to sterilize the liquid to be treated. The first sealing ring 5 achieving radial sealing means that the first sealing ring 5 is arranged between the installation position and the module housing 1, and the ultraviolet sterilization module is sealed through the interference fit between the first sealing ring 5 and the installation position, and multiple sealing structures are supported to be added.

[0038] Furthermore, the second sealing ring 6, the quartz glass 3, and the light source assembly 2 are stacked in the installation groove 11 of the module housing 1 in sequence, and they are parallel to each other. The second sealing ring 6 is located between the bottom of the installation groove 11 and the quartz glass 3. The bottom of the installation groove 11 refers to the side of the installation groove 11 close to the light-emitting hole 12. The inner diameter of the second sealing ring 6 is larger than the inner diameter of the light-emitting hole 12, and the second sealing ring 6 elastically abuts against the inner wall of the installation groove 11 so that it will not fall off from the light-emitting hole 12. First, the quartz glass 3 presses the second sealing ring 6, and the light source assembly 2 is abutted against one side of the quartz glass 3. Finally, the module bracket 4 extends into the installation groove 11 of the module housing 1 to support the light source assembly 2, thereby completing the compression of the quartz glass 3 and the second sealing ring 6 to seal the light source assembly 2.

[0039] See Figures 1 to 3 In this embodiment, the first fastening structure 13 and the second fastening structure 41 are thread structures. The first fastening structure 13 is an internal thread structure arranged in the installation groove 11 of the module housing 1, and the second fastening structure 41 is an external thread structure arranged on the outside of the module bracket 4. Compared with other forms of fastening structures, the thread structure can be connected by simply rotating and tightening, and can better press structures such as the second sealing ring 6, with simple operation and high stability. At the same time, the thread structure connectors can be disassembled and installed repeatedly and are not easily damaged, having good reusability.

[0040] See Figures 1 to 3 In this embodiment, the light source assembly 2 includes a substrate 2a and lamp beads 2b arranged on one side of the substrate 2a. The wavelength range of the ultraviolet light emitted by the lamp beads 2b is 245 nm to 345 nm. The principle of the ultraviolet sterilization module is to use ultraviolet light to irradiate microorganisms such as bacteria and viruses, destroy the structure of DNA (deoxyribonucleic acid) in the body, and make them die immediately or lose their reproductive ability. The ultraviolet absorption and photochemical sensitivity range of DNA in the cell nucleus of microorganisms overlap, which is 240 - 280 nm, and the absorption peak is around 265 nm. Based on practical tests, the light source assembly 2 within this wavelength range has the best sterilization effect.

[0041] See Figures 1 to 3, in this embodiment, an annular fastening gasket 7 is provided between the light source assembly 2 and the quartz glass 3. Since a protruding lamp bead 2b is provided on the light source assembly 2, the contact surface between it and the quartz glass 3 is not flat. The height of the fastening gasket 7 is greater than or equal to the height of the lamp bead 2b, which plays an auxiliary supporting role. At the same time, the annular structure of the fastening gasket 7 can also fix and limit the light source assembly 2.

[0042] See Figures 1 to 3 , in this embodiment, the material of the fastening gasket 7 is polytetrafluoroethylene. As a kind of high molecular polymer, polytetrafluoroethylene has the characteristics of being acid and alkali resistant and resistant to various organic solvents, and is almost insoluble in all solvent materials. At the same time, polytetrafluoroethylene has the characteristics of high temperature resistance, excellent ultraviolet resistance and weather resistance, and the radiation dose threshold of polytetrafluoroethylene is 2–7X 104rads.

[0043] See Figures 1 to 3 , in this embodiment, a first sealing ring limit groove 14 for accommodating the first sealing ring 5 is provided on the outer side of the module housing 1, and a second sealing ring limit groove 15 for accommodating the second sealing ring 6 is provided in the installation groove 11. Through the setting of the sealing ring limit groove, the first sealing ring 5 and the second sealing ring 6 can be effectively fixed and positioned, ensuring that their positions are accurate during the installation process, thereby improving the sealing performance. At the same time, it can also effectively prevent the sealing ring from accidentally shifting or falling off during use, ensuring that the sealing effect is lasting and stable.

[0044] See Figures 1 to 3 , in this embodiment, multiple first sealing rings 5 can be provided. By providing multiple first sealing rings 5, a multiple sealing barrier can be formed when connecting components, improving the sealing performance and further reducing the risk of leakage.

[0045] See Figures 1 to 3 , in this embodiment, a waterproof convex ring 16 is also convexly provided on the outer side of the module housing 1. The waterproof convex ring 16 can complement the first sealing ring 5 to enhance the overall sealing performance.

[0046] See Figures 1 to 3, in this embodiment, the quartz glass 3 has a cylindrical structure, and the thickness range of the quartz glass 3 is from 1 mm to 2 mm. The quartz glass 3 is the channel for light source scattering, and its thickness range determines the scattering distance and angle. Through the test of quartz glass 3 with different thicknesses, when the thickness of the quartz glass 3 changes from 1 mm to 4 mm, the irradiation intensity of the light source through the glass shows a decreasing distribution. Generally speaking, the greater the thickness of the glass, the lower the light transmittance. This is because when light passes through the glass, it will lose some energy due to the absorption and scattering of the glass itself. The greater the thickness of the glass, the longer the distance the light passes through, and the more energy is lost. For the same type of glass, the light transmittance at a thickness of 2 mm is 90%, but at a thickness of 4 mm, the light transmittance is about 80%, and at a thickness of 10 mm, the light transmittance is only about 60%. However, considering the fragile characteristics of the glass, a certain compressive strength, that is, a certain thickness, is required. Combining the actual needs and practical tests, choosing quartz glass 3 with a thickness of 1 mm to 2 mm is a better choice for both light transmission and compression resistance.

[0047] See Figures 1 to 3 , in this embodiment, a heat-conducting groove 42 for the heat conduction of the light source assembly 2 is provided on the module bracket 4. The inner surface of the heat-conducting groove 42 is coated with a sealant, and a charging port 43 communicating with the heat-conducting groove 42 is further provided at one end of the module bracket 4. The heat-conducting groove 42 realizes the hollow-structured module bracket 4. In addition to supporting the internal components of the ultraviolet sterilization module, the module bracket 4 is also the main channel for heat dissipation of the light source module. Whether the light source module conducts heat well affects the luminous efficiency of the lamp bead 2b. Its main principle is to make the light source module have a large contact area with the air and use silicone with good heat-conducting performance for sealing. The luminous efficiency and service life of the light source module are closely related to the temperature of the light source module. The higher the temperature, the more the peak wavelength of the light source will produce a red-shift phenomenon. The hollow design of the module bracket 4, on the one hand, takes away part of the heat of the light source module through the heat conduction of the air, and on the other hand, the sealant will be injected into the hollow inner surface, and the sealant will radiate the absorbed heat. In this way, the temperature of the light source module will be stabilized within a certain range, thereby ensuring the luminous rate and service life of the light source module.

[0048] The present invention will be described in more detail below by way of examples. However, the following examples are merely illustrative and should not be considered as limiting the scope of the present invention. Obviously, those skilled in the art can make any changes, improvements or modifications without departing from the spirit of the present invention.

[0049] See Figures 1 to 3 , this example proposes a working principle of an ultraviolet sterilization module:

[0050] In this example, the module housing 1 of the ultraviolet sterilization module is installed in the boss at the bottom of the water tank (i.e., the liquid container). The inside of the module is sealed by the second sealing ring 6 to prevent the liquid in the water tank from penetrating into the lamp beads 2b and affecting the service life of the lamp beads 2b. The outside of the module housing 1 is designed with a double-layer first sealing ring 5. The first sealing ring 5 is in interference fit with the installation boss of the water tank, and radially prevents the liquid in the water tank from leaking to the outside of the water tank through the assembly gap of the ultraviolet sterilization module. At the same time, when powered on, the liquid in the water tank can be disinfected, and the disinfection efficiency is higher as the liquid decreases. The structure is simple, easy to use, has low production cost, is leak-proof and has high sterilization efficiency.

[0051] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. An ultraviolet sterilization module, characterized in that: include: A module housing is used to be installed in a liquid container, a first sealing ring is sleeved on the outer side of the module housing, the first sealing ring is used for radial sealing between the module housing and the liquid container, and the module housing is provided with a mounting groove and a light outlet hole that are interconnected, and a first fastening structure is provided on the side wall of the mounting groove; A light source assembly, used for providing a light source, is arranged in the mounting groove, and a light emitting side of the light source assembly is opposite to the light emitting hole; Quartz glass, used for scattering light sources, is arranged on the light-emitting side of the light source assembly, and a second sealing ring is arranged between the quartz glass and the mounting groove; A module bracket, used for pressing the light source assembly, the quartz glass, and the second sealing ring, the module bracket is inserted into the mounting groove and abuts against the backlight side of the light source assembly, and a second fastening structure cooperating with the first fastening structure is provided on the outer side of the module bracket; The first fastening structure and the second fastening structure are threaded structures.

2. The ultraviolet disinfection module according to claim 1, characterized in that: The light source assembly comprises a substrate and a lamp bead arranged on one side of the substrate, and the wavelength range of the ultraviolet light emitted by the lamp bead is 245nm to 345nm.

3. The ultraviolet disinfection module according to claim 2, characterized in that: An annular fastening gasket is arranged between the light source assembly and the quartz glass.

4. The ultraviolet disinfection module according to claim 3, characterized in that: The material of the fastening gasket is polytetrafluoroethylene.

5. The ultraviolet sterilization module according to claim 1, characterized in that: A first sealing ring limiting groove for accommodating the first sealing ring is formed on the outer side of the module housing, and a second sealing ring limiting groove for accommodating the second sealing ring is formed in the mounting groove.

6. The ultraviolet disinfection module according to claim 1, characterized in that: The first sealing ring may be provided in plurality.

7. The ultraviolet disinfection module according to claim 1, characterized in that: A waterproof convex ring is also convexly provided on the outer side of the module shell.

8. The ultraviolet disinfection module according to claim 1, characterized in that: The quartz glass is a cylindrical structure, and the thickness of the quartz glass ranges from 1 mm to 2 mm.

9. The ultraviolet disinfection module according to claim 1, characterized in that: The module bracket is provided with a heat conduction groove for heat conduction of the light source assembly, the inner surface of the heat conduction groove is coated with sealant, and one end of the module bracket is also provided with a charging port connected to the heat conduction groove.

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