Overflow type sterilizer

Abstract

The utility model relates to the technical field of overflowing type ultraviolet sterilization, in particular to an overflowing type sterilizer. Comprising a shell, a light-transmitting pipe is installed in the shell, connecting pipes are arranged at the two ends of the light-transmitting pipe respectively and connected with an external water inlet pipeline and an external water outlet pipeline respectively, a reflecting film is arranged on the local area of the outer surface of the light-transmitting pipe, and at least one light source assembly is arranged on the area, not covered by the reflecting film, of the outer side of the light-transmitting pipe. The light source assembly emits ultraviolet light into the light-transmitting tube, and the reflecting film reflects the ultraviolet light penetrating through the light-transmitting tube back into the light-transmitting tube. The reflecting film has the beneficial effects that the reflecting film adopts a semi-surrounding design, so that compared with a cylindrical reflecting film, the splicing process and the trepanning process are reduced, and the production efficiency is improved. Meanwhile, the reflecting film and the light source assembly form an annular structure, one side of a circuit board of the light source assembly is coated with a reflecting layer, and the reflecting layer can make up the reflecting effect of the reflecting film.

Description

Technical Field

[0001] The utility model relates to the technical field of over-flow type ultraviolet sterilization, in particular to an over-flow type sterilizer. Background Art

[0002] Ultraviolet lamp is a commonly used sterilization and disinfection equipment, which can effectively remove bacteria, viruses, spores and other pathogens. Ultraviolet LED is a diode that emits ultraviolet light, generally referring to LEDs with a central wavelength of less than 400nm. When the wavelength is greater than 380nm, it is called near-ultraviolet LED, and when it is shorter than 300nm, it is called deep ultraviolet LED. Ultraviolet LED, especially deep ultraviolet LED, is widely used in biomedicine and purification (water, air, etc.) fields because of its good sterilization effect of short-wavelength light.

[0003] However, in the existing disclosed flow-through sterilizers, in order to better utilize the sterilization effect of the ultraviolet lamp, a layer of reflective film is generally wrapped around the outer layer of the flow tube, such as the flow-through sterilizer disclosed in the Chinese invention patent (application number: 202322021070.2). The ultraviolet rays entering the flow tube are continuously reflected in the flow tube under the action of the reflective film, thereby improving the sterilization efficiency. The production steps of the sterilizer disclosed in the prior art are as follows: first, a tubular reflective film is produced according to the outer diameter of the flow tube. The tubular reflective film is generally formed by connecting a piece of reflective film to form a tubular shape; then, a hole is opened in the reflective film according to the installation position of the ultraviolet lamp. The flow-through sterilizer with this structure has the following disadvantages:

[0004] 1. Low production efficiency, requiring multiple processes including reflective film docking and reflective film opening;

[0005] 2. The installation efficiency is low. During installation, workers are required to install the LED light source on the light board in correspondence with the opening position of the reflective film; Utility Model Content

[0006] The purpose of the utility model is to provide a flow-through sterilizer to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A flow-through sterilizer comprises: a shell, a light-transmitting tube is installed in the shell, a reflective film is arranged in a local area of the outer surface of the light-transmitting tube, at least one group of light source components is arranged in the area of the outer side of the light-transmitting tube not covered by the reflective film, the light source component emits ultraviolet light into the light-transmitting tube, and the reflective film reflects the ultraviolet light passing through the light-transmitting tube back into the light-transmitting tube.

[0009] As a further embodiment of the present utility model, the reflective film is in a U-shaped structure and wraps around the outer surface of the light-transmitting tube. The light source assembly is arranged on the opening side of the reflective film. The reflective film and the light source assembly form a closed ring to surround the outer surface of the light-transmitting tube.

[0010] As a further embodiment of the present utility model, on both sides of the inner wall of the outer shell, first protrusions, second protrusions, third protrusions, fourth protrusions, and fifth protrusions are sequentially arranged in a mirror image from top to bottom.

[0011] The vertices of the first protrusion, the second protrusion, and the third protrusion press the reflective film tightly against the outer surface of the light-transmitting tube.

[0012] A clamping groove is formed between the fourth protrusion and the fifth protrusion for fixing the edge of the reflective film.

[0013] As a further embodiment of the present utility model, a clamping groove is arranged on the side of the fifth protrusion away from the fourth protrusion. The positions of adjacent two clamping grooves fix the light source assembly.

[0014] As a further embodiment of the present utility model, connecting pipes and end caps are respectively arranged at both ends of the light-transmitting tube. The connecting pipes and the end caps adopt an integrated design or a split design. The connecting pipes are respectively connected to an external water inlet pipe and an external water outlet pipe. The end caps are fixed to both ends of the outer shell by bolts. Internal threads are arranged between the second protrusion and the third protrusion. The threaded end of the bolt is connected to the internal thread.

[0015] As a further embodiment of the present utility model, the connecting pipe includes a connecting end and an inserting end. A raised stop is arranged between the connecting end and the inserting end. The inserting end is installed inside the light-transmitting tube. At least one first sealing groove is arranged on the outer side of the inserting end. A sealing ring is arranged in the first sealing groove. The stop is installed between the end cap and the port of the light-transmitting tube. The connecting end passes through the end cap and is connected to an external pipeline. At least one second sealing groove is arranged on the outer side of the connecting end.

[0016] As a further embodiment of the present utility model, a cable and a connector are further included. The cable is electrically connected to the light source assembly. The connector is electrically connected to the cable. The connector is used for connecting to an external power supply.

[0017] As a further embodiment of the present utility model, the light source assembly includes a circuit board, a light source, and a wiring terminal. The light source is an LED ultraviolet light source. The light source is welded on the circuit board. The circuit board is a metal-based circuit board. The cable is electrically connected to the wiring terminal.

[0018] As a further embodiment of the present utility model, a reflective coating is provided on one side of the circuit board close to the light-transmitting tube, and the reflective coating reflects the ultraviolet light passing through the light-transmitting tube back into the light-transmitting tube.

[0019] The beneficial effects of the present utility model are as follows: The reflective film adopts a semi-surround design, which reduces the splicing process and the hole-opening process compared with the cylindrical reflective film, improving the production efficiency. At the same time, the reflective film and the light source assembly form an annular structure, and a reflective layer is coated on one side of the circuit board of the light source assembly, which can make up for the reflection effect of the U-shaped reflective film.

[0020] Other features and advantages of the present utility model will be disclosed in detail in the following specific embodiments and drawings. Description of the Drawings

[0021] Figure 1 is a perspective view of a flow-through sterilizer of the present utility model;

[0022] Figure 2 is Figure 1 the axial sectional view of

[0023] Figure 3 is an enlarged sectional view of the end cap connection area;

[0024] Figure 4 is Figure 1 the radial sectional view of

[0025] Figure 5 is the front view of the connecting pipe;

[0026] Figure 6 is a perspective view of the light source assembly;

[0027] Figure 7 is a perspective view of the existing reflective film.

[0028] List of reference numerals: light-transmitting tube 1, reflective film 2, housing 3, light source assembly 4, connecting pipe 5, sealing ring 6, cable 7, joint 8, end cap 9, bolt 10, first protrusion 301, second protrusion 302, third protrusion 303, fourth protrusion 304, fifth protrusion 305, card slot 306, connection end 501, insertion end 502, stop 503, first sealing groove 504, second sealing groove 505, circuit board 401, light source 402, wiring terminal 403. Detailed Description of the Preferred Embodiments

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] In the prior art, the production process of the sterilizer includes multiple key steps. First, a tubular reflective film is made according to the outer diameter of the flow-through pipe (as Figure 7 shown). This process usually requires docking a reflective film to form the required tubular structure. Immediately afterwards, according to the installation position of the ultraviolet lamp (or LED light source), precise hole opening is performed on the already made tubular reflective film to ensure that the light can penetrate smoothly and irradiate the target area. However, this production method has significant disadvantages: on the one hand, since it involves multiple independent processes, including the docking and hole opening of the reflective film, and some links may rely on manual operation, the production efficiency is low, increasing the production cost and cycle; on the other hand, during the installation process, workers need to ensure that the LED light sources on the lamp board are precisely aligned with the hole positions on the reflective film. This step not only takes a long time but is also prone to errors, thus affecting the sterilization effect and the overall quality of the product. Therefore, in order to improve the production efficiency and installation efficiency, it is necessary to further optimize and improve the production process of this sterilizer.

[0031] As Figures 1 to 6 shown, a flow-through sterilizer includes: a housing 3, a light-transmitting pipe 1 is installed inside the housing 3, a layer of reflective film 2 is disposed on a partial area of the outer surface of the light-transmitting pipe 1, at least one group of light source components 4 is disposed in the area of the light-transmitting pipe 1 that is not covered by the reflective film 2, the light source components 4 emit ultraviolet light into the light-transmitting pipe 1, and the reflective film 2 reflects the ultraviolet light passing through the light-transmitting pipe 1 back into the light-transmitting pipe 1.

[0032] This embodiment provides a flow-through sterilizer. A layer of reflective film 2 is disposed on a partial area of the outer surface of the light-transmitting pipe 1 to form a non-fully enclosed wrapping state. Specifically, the reflective film is arranged in a semi-surrounding form around the pipeline and deliberately leaves openings or exits at specific positions for installing the light source components 4. This design aims to achieve specific reflection and sterilization effects through partial coverage of the reflective film, while reducing the splicing process and hole opening process of the reflective film 2, and at the same time, the assembly process of the entire flow-through sterilizer is relatively simplified.

[0033] As a preferred embodiment, the reflective film 2 is in a U-shaped structure and wraps around the outer surface of the light-transmitting tube 1. The light source assembly 4 is arranged on the opening side of the reflective film 2. The reflective film 2 and the light source assembly 4 form a closed ring to surround the outer surface of the light-transmitting tube 1. Meanwhile, to further improve the reflection effect, a reflective coating is also provided on the side of the circuit board 401 close to the light-transmitting tube 1, and the reflective coating reflects the ultraviolet light passing through the light-transmitting tube 1 back into the light-transmitting tube 1.

[0034] In this embodiment, to improve the reflection effect of the reflective film 2, the reflective film 2 is bent into a U-shaped structure, and the opening part of this structure exactly corresponds to the position where the light source assembly can be placed. At the same time, the reflective coating provided on the circuit board 401 makes up for the reflection loss of the U-shaped opening part.

[0035] As a preferred embodiment, on both sides of the inner wall of the housing 3, first protrusions 301, second protrusions 302, third protrusions 303, fourth protrusions 304, and fifth protrusions 305 are arranged in mirror image from top to bottom. The vertices of the first protrusions 301, second protrusions 302, and third protrusions 303 press the reflective film 2 tightly against the outer surface of the light-transmitting tube 1. A slot is formed between the fourth protrusions 304 and the fifth protrusions 305 for fixing the edge of the reflective film 2.

[0036] In this embodiment, a housing 3 is provided, and multiple protrusions are arranged on its inner wall for fixing the light-transmitting tube 1 and the reflective film 2.

[0037] To fix the position of the light source assembly 4 so that its light source position exactly corresponds to the opening of the reflective film 2, in this embodiment, a slot 306 is provided on the side of the fifth protrusion 305 away from the fourth protrusion 304, and the positions of the adjacent two slots 306 fix the position of the light source assembly 4.

[0038] As a preferred embodiment, connection pipes 5 and end caps 9 are respectively arranged at both ends of the light-transmitting tube 1. The connection pipes 5 and the end caps 9 can be integrally designed or separately designed. The connection pipes 5 are respectively connected to an external water inlet pipe and a water outlet pipe. End caps 9 are respectively arranged at both ends of the housing 3, and the end caps 9 are fixed to both ends of the housing 3 by bolts 10. Internal threads are provided between the second protrusions 302 and the third protrusions 303, and the threaded ends of the bolts 10 are connected to the internal threads.

[0039] In this embodiment, the connection pipes 5 and the end caps 9 can be separately designed or integrally designed. The integral design can further reduce the installation process and improve the production efficiency.

[0040] As a preferred embodiment, this embodiment provides an installation method for the light-transmitting tube 1 and the connecting tube 5, which can achieve an effective sealing effect. Specifically: The connecting tube 5 includes a connecting end 501 and an insertion end 502. A raised rabbet 503 is provided between the connecting end 501 and the insertion end 502. The insertion end 502 is installed inside the light-transmitting tube 1. At least one first sealing groove 504 is provided on the outer side of the insertion end 502. A sealing ring 6 is provided in the first sealing groove 504. The rabbet 503 is installed between the end cover 9 and the port of the light-transmitting tube 1. The connecting end 501 passes through the end cover 9 and is connected to an external pipeline. At least one second sealing groove 505 is provided on the outer side of the connecting end 501.

[0041] As a preferred embodiment, it further includes a cable 7 and a connector 8. The cable 7 is electrically connected to the light source assembly 4. The connector 8 is electrically connected to the cable 7. The connector 8 is used to connect to an external power supply.

[0042] As a preferred embodiment, the light source assembly 4 includes a circuit board 401, a light source 402 and a wiring terminal 403. The light source 402 is an LED ultraviolet light source. The light source 402 is soldered on the circuit board 401. The cable 7 is electrically connected to the wiring terminal 403.

[0043] During the use of the flow-through sterilizer, its LED light source is always in a working state, and a large amount of heat is easily generated. The accumulation of heat will affect the service life of the LED. In order to improve the service life of the product, the circuit board 401 used is a metal-based circuit board, and the metal-based circuit board has a good heat dissipation effect, increasing the heat dissipation area of the LED light source.

[0044] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in-line sterilizer, characterized in that, Comprising: A housing (3), inside which a light-transmitting tube (1) is installed. A reflective film (2) is disposed on a partial area of the outer surface of the light-transmitting tube (1). At least one set of light source components (4) is disposed in the area of the outer side of the light-transmitting tube (1) that is not covered by the reflective film (2). The light source components (4) emit ultraviolet light into the light-transmitting tube (1), and the reflective film (2) reflects the ultraviolet light passing through the light-transmitting tube (1) back into the light-transmitting tube.

2. An in-line sterilizer according to claim 1, wherein: The reflective film (2) is in a U-shaped structure and wraps around the outer surface of the light-transmitting tube (1). The light source components (4) are disposed on the opening side of the reflective film (2). The reflective film (2) and the light source components (4) form a closed ring to surround the outer surface of the light-transmitting tube (1).

3. An in-line sterilizer according to claim 2, wherein: On both sides of the inner wall of the housing (3), first protrusions (301), second protrusions (302), third protrusions (303), fourth protrusions (304), and fifth protrusions (305) are mirror-symmetrically arranged from top to bottom. The vertices of the first protrusions (301), second protrusions (302), and third protrusions (303) press the reflective film (2) tightly against the outer surface of the light-transmitting tube (1). A clamping groove is formed between the fourth protrusions (304) and the fifth protrusions (305) for fixing the edge of the reflective film (2).

4. An in-line sterilizer according to claim 3, wherein: On one side of the fifth protrusions (305) away from the fourth protrusions (304), clamping grooves (306) are provided, and the positions of adjacent two sets of light source components (4) are fixed by the clamping grooves (306).

5. An in-line sterilizer according to claim 4, wherein: Both ends of the light-transmitting tube (1) are respectively provided with a connecting pipe (5) and an end cap (9). The connecting pipe (5) and the end cap (9) are designed integrally or separately. The connecting pipe (5) is respectively connected to an external water inlet pipe and a water outlet pipe. The end cap (9) is fixed to both ends of the housing (3) by bolts (10). Internal threads are provided between the second protrusions (302) and the third protrusions (303), and the threaded ends of the bolts (10) are connected to the internal threads.

6. An in-line sterilizer according to claim 5, wherein: The connecting pipe (5) includes a connecting end (501) and an insertion end (502). A raised stop (503) is provided between the connecting end (501) and the insertion end (502). The insertion end (502) is installed inside the light-transmitting tube (1). At least one first sealing groove (504) is provided on the outer side of the insertion end (502), and a sealing ring (6) is provided in the first sealing groove (504). The stop (503) is installed between the end cap (9) and the port of the light-transmitting tube (1). The connection end (501) passes through the end cap (9) to be connected to an external pipeline, and at least one second sealing groove (505) is arranged on the outer side of the connection end (501).

7. An in-line sterilizer according to claim 6, wherein it further comprises a cable (7) and a connector (8), the cable (7) is electrically connected to the light source assembly (4), the connector (8) is electrically connected to the cable (7), and the connector (8) is used for connecting to an external power supply.

8. An in-line sterilizer according to claim 7, wherein the light source assembly (4) comprises a circuit board (401), a light source (402) and a wiring terminal (403), the light source (402) is an LED ultraviolet light source, the light source (402) is welded on the circuit board (401), the circuit board (401) is a metal-based circuit board, and the cable (7) is electrically connected to the wiring terminal (403).

9. An in-line sterilizer according to claim 8, wherein a reflective coating is arranged on one side of the circuit board (401) close to the light-transmitting tube (1), and the reflective coating reflects the ultraviolet light passing through the light-transmitting tube (1) back into the light-transmitting tube (1).

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