Cavitation microbubble enhanced ultraviolet sterilization lamp tube

Abstract

The utility model discloses a cavitation microbubble enhanced ultraviolet sterilization lamp tube, and aims to solve the problems that a traditional ultraviolet sterilization technology is difficult to effectively treat bacterial clusters and is influenced by water quality. According to the lamp tube, the hydrodynamic cavitation technology and ultraviolet sterilization are combined, a bacterial cluster structure is destroyed through microbubble blasting, bacteria are comprehensively killed, and meanwhile the bacteria are prevented from being attached to the surface of the lamp tube. The utility model is characterized in that a special tank body structure and an abrupt change structure are designed, so that higher energy utilization rate and sterilization effect are realized, the equipment structure is simplified, the space is saved, and the efficiency and reliability of sterilization operation are improved. Due to the uniqueness and practicability of the device, the device has important innovation and application prospects in the technical field of sterilization equipment.

Description

Technical Field

[0001] This utility model relates to the field of sterilization equipment technology, and in particular to a device for a cavitation microbubble enhanced ultraviolet germicidal lamp tube. Background Technology

[0002] Ultraviolet (UV) disinfection technology works by disrupting the DNA or RNA structure of pathogens, thus blocking their replication and reproduction. It is highly effective against individual, free-floating bacteria, viruses, and other microorganisms. However, its efficiency is typically lower when dealing with bacterial clumps (i.e., aggregated bacteria). Bacterial clumps are usually composed of an outer layer of bacteria surrounding an inner layer, which acts as a physical barrier protecting the inner bacteria. Even if UV light successfully kills the microorganisms on the outer layer of the clump, the inner bacteria can still survive. Furthermore, impurities and bacteria in wastewater can adhere to the outside of the lamp, affecting the penetration of UV light and its sterilization effect. Summary of the Invention

[0003] In view of the above-mentioned problems in the prior art, the main purpose of this utility model is to overcome the problem that ordinary ultraviolet disinfection lamps have limited ability to treat pathogens in wastewater and cannot kill bacterial clusters. It provides a device for cavitation microbubble enhanced ultraviolet germicidal lamp tubes to solve the problems of ordinary ultraviolet disinfection lamps being difficult to treat condensed bacteria and easily affected by water turbidity.

[0004] The technical solution of this utility model is as follows: A cavitation microbubble enhanced ultraviolet germicidal lamp tube includes:

[0005] The tank has a uniformly varying pipe diameter on its inner wall surface and a constant pipe diameter on its outer wall surface. The outer wall surface has an inlet pipe and an outlet pipe.

[0006] An ultraviolet lamp is inserted into the can body, and there is an electrode at each end of the lamp.

[0007] A flange for the ultraviolet lamp to pass through and for securing the ultraviolet lamp;

[0008] The inner wall of the tank is provided with a mutation structure that changes the liquid flow area.

[0009] Preferably, the water inlet pipe is tangentially arranged to the outer wall of the tank.

[0010] Preferably, the mutation structure consists of a section with a decreasing inner diameter, a throat, and a section with a increasing inner diameter on the inner wall of the tank, thereby creating hydraulic cavitation.

[0011] Preferably, the number of mutation structures that change the liquid flow area is 2-5, and they are evenly distributed.

[0012] Preferably, the mutation structure is fixedly connected to the outer wall surface.

[0013] Preferably, the minimum inner diameter of the mutation structure is at least 0.5 mm away from the outer diameter of the ultraviolet lamp.

[0014] Preferably, the mutation structure is a perforated plate, which has uniformly distributed circular holes with a hole diameter greater than 0.5 mm.

[0015] Preferably, the perforated plate has ≥3 circular holes.

[0016] Preferably, the ultraviolet lamps are electrically connected to an external control device.

[0017] Preferably, the ultraviolet lamp tube is provided with lamp heads at both ends, a lamp holder is provided outside the lamp head, and a sealing element is provided between the lamp holder and the flange.

[0018] Compared with existing technologies, the advantages and positive effects of this invention are as follows: by using the microbubble explosion generated by hydraulic cavitation technology to destroy the outer bacterial layer of the bacterial cluster, the bacterial cluster is disintegrated, thereby using ultraviolet light to completely kill the bacteria. At the same time, it avoids bacteria adhering to the surface of the ultraviolet lamp tube. The hydraulic cavitation turbulence structure and the ultraviolet lamp tube are combined in the same device, which improves the spatiotemporal and fluid dynamic matching degree, improves the energy utilization rate of ultraviolet light, simplifies the equipment, saves space, and thus better completes the ultraviolet sterilization operation of wastewater. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a UV germicidal lamp tube enhanced by cavitation microbubbles.

[0020] Figure 2 This is a schematic diagram of the central cross-section of the cavitation microbubble enhanced ultraviolet germicidal lamp tube in Example 1.

[0021] Figure 3 This is a cross-sectional view of the cavitation microbubble enhanced ultraviolet germicidal lamp tube of Example 1.

[0022] In the diagram: UV lamp 1, lamp holder 10, tank 2, inlet pipe 20, outlet pipe 21, flange 3, abrupt change structure 4, inner diameter decreasing section 40, throat 42, inner diameter increasing section 42, lamp holder 6, seal 7. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown to avoid unnecessarily obscuring the utility model; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments. Example

[0025] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model provides a technical solution: a cavitation microbubble enhanced ultraviolet germicidal lamp tube includes a tank 2. The inner wall of the tank is provided with a uniformly varied abrupt change structure 4 that alters the liquid flow area. An ultraviolet lamp tube 1 is installed inside the tank. Flanges 3 are provided at both ends of the tank 1. Lamp heads 10 are provided at both ends of the ultraviolet lamp tube 1. The two ends of the ultraviolet lamp tube 1 extend out of the flanges 3 and are fixed to the flanges 3 by lamp holders 6. A sealing element 7 is provided between the lamp holder 6 and the flanges 3. A water inlet pipe 20 is provided on the outer wall of the tank 2, tangentially to the tank. The ultraviolet lamp tube 1 is a quartz tube filled with mercury vapor, and an electrode is connected to each end.

[0026] like Figure 2 The mutation structure 4 includes a segment with a decreasing inner diameter, a throat, and a segment with a increasing inner diameter. The angle between the segment with a decreasing inner diameter and the outer wall of the UV lamp tube 2 is α. The throat has the smallest inner diameter and a gap of c between it and the outer wall of the UV lamp tube 2. The angle between the segment with a increasing inner diameter and the outer wall of the UV lamp tube 2 is b, where α > b and c ≥ 0.5 mm. In this embodiment, the mutation structure is set in two places: the inlet pipe 20 is set between the first mutation structure and the flange, and the outlet pipe 21 is set between the second mutation structure and the flange 3.

[0027] In this embodiment, water enters the tank 2 in a spiral motion through a tangential inlet pipe 20, preventing impact on the tank and reducing hydraulic losses caused by impact. After entering the tank, the water flows downwards, and the diameter of the pipe on the inner wall of the tank 2 gradually decreases, reducing the flow area and increasing the flow velocity. When the pressure decreases below the saturated vapor pressure, microbubbles are generated. Subsequently, the pipe diameter gradually recovers, and the microbubbles burst, generating a hydraulic cavitation effect that breaks up bacterial clusters and improves the ultraviolet sterilization effect. At the same time, the hydraulic cavitation effect can also prevent bacteria from adhering to the ultraviolet lamp tube and affecting the ultraviolet transmittance. The water is constantly under ultraviolet radiation inside the tank, passing through multiple cavitation stages, and finally flows out through the outlet pipe.

Claims

1. A cavitation microbubble enhanced ultraviolet germicidal lamp tube, characterized in that, include: The tank has a uniformly varying pipe diameter on its inner wall surface and a constant pipe diameter on its outer wall surface. The outer wall surface has an inlet pipe and an outlet pipe. An ultraviolet lamp is inserted into the can body, with an electrode at each end of the lamp. A flange for the ultraviolet lamp to pass through and for securing the ultraviolet lamp; The inner wall of the tank is provided with a mutation structure that changes the liquid flow area.

2. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The water inlet pipe is tangentially positioned to the outer wall of the tank.

3. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The mutation structure consists of a section with a decreasing inner diameter, a throat, and a section with a increasing inner diameter on the inner wall of the tank, which creates a hydraulic cavitation effect.

4. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The number of mutation structures that change the liquid flow area is 2-5, and they are evenly distributed.

5. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The mutation structure is fixedly connected to the outer wall surface.

6. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 3, characterized in that, The minimum inner diameter of the mutation structure is at least 0.5 mm away from the outer diameter of the UV lamp.

7. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The ultraviolet lamps are electrically connected to external control equipment.

8. The cavitation microbubble enhanced ultraviolet germicidal lamp tube according to claim 1, characterized in that, The ultraviolet lamp tube is provided with lamp heads at both ends, and a lamp holder is provided outside the lamp head. A sealing element is provided between the lamp holder and the flange.

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