A UV lamp sterilization device with backwashing structure

Abstract

The invention discloses an ultraviolet lamp sterilization device with a backwashing structure, comprising a tube body, a mounting block is arranged on the top of the tube body, a quartz tube is installed in the tube body through the mounting block, an ultraviolet sterilization lamp is arranged in the quartz tube, a water inlet is arranged on the left side of the tube body, a water outlet is arranged on the right side of the tube body, a water inlet baffle is arranged on the left side of the tube body, the water inlet baffle divides the inside of the tube body into a water inlet cavity and a sterilization cavity, a filter screen is arranged below the tube body, a plurality of water outlet holes are arranged on the guide plate below the filter screen, a drain valve is arranged at the lower part of the tube body, and when the drain valve is opened, water remaining in the stainless steel tube is caused to flow downward to flush the filter screen by gravity, so that cleaning is convenient and clogging of the filter screen is prevented, thereby increasing the filtering effect of the filter screen.

Description

Technical Field

[0001] The invention relates to an ultraviolet lamp sterilization device with a backwashing structure. Background Art

[0002] The ultraviolet sterilization device of the water heater sterilizes the water in the water heater through ultraviolet lamp sterilization technology. The existing ultraviolet sterilization device of the water heater has a quartz tube arranged in the tube body, and an ultraviolet sterilization lamp arranged in the quartz tube. The water is initially filtered through a layer of filter and then flows into the stainless steel tube for ultraviolet sterilization. The water flows directly into the stainless steel tube for sterilization and then flows out. It is found that the sterilization effect is not ideal, and the filter is not convenient to clean. The long-term use of the filter is prone to poor filtering effect and filter blockage. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a tube body, a mounting block is provided on the top of the tube body, a quartz tube is installed on the tube body through the mounting block, an ultraviolet sterilization lamp is provided in the quartz tube, a water inlet is provided on the left side of the tube body, a water outlet is provided on the right side of the tube body, a water inlet baffle is provided on the left side of the tube body, the water inlet baffle divides the interior of the tube body into a water inlet chamber and a sterilization chamber, a plurality of guide plates are provided in the sterilization chamber, a filter screen is provided below the tube body, a plurality of water outlet holes are provided on the guide plate below the filter screen, and a drain valve is provided at the lower part of the tube body.

[0004] Preferably, the guide plate is provided with a plurality of diversion holes, and the plurality of diversion holes are arranged in a circular array on the guide plate. A plurality of water retaining inclined plates are obliquely arranged above each diversion hole to cut the water flow, thereby achieving the purpose of dispersing the water flow, so that the water can rotate around the quartz tube and flow upward, making the ultraviolet sterilization lamp more thorough.

[0005] Preferably, a central through hole is provided in the center of the guide plate, and the quartz tube passes through the central through hole. The central through hole is provided with an arc-shaped flange to increase the contact area between the quartz tube and the guide plate and prevent the quartz tube from breaking.

[0006] Preferably, the water outlet is arranged obliquely upward toward the filter screen, and the water outlet is facing the filter screen. When cleaning, the water inlet can be opened at the same time to let water in, and the water flows toward the filter screen through the water inlet hole, thereby increasing the cleaning efficiency of the filter screen.

[0007] Preferably, the angle between the water retaining inclined plate and the guide plate is 15°-45°.

[0008] Preferably, the guide plate is made of stainless steel.

[0009] Preferably, the surface of the water retaining inclined plate is a polished surface, and the surface is polished to reflect ultraviolet light into the diversion holes, further increasing the sterilization effect.

[0010] The beneficial effects of the present invention are as follows: by arranging a water-retaining inclined plate on the guide plate, the water is rotated and moves upward, so that the ultraviolet light can irradiate the water for a longer time to sterilize, and the sterilization is more thorough. When flushing, the drain valve is opened, and the water remaining in the stainless steel pipe flows downward to flush the filter screen by gravity, which is convenient for cleaning and prevents the filter screen from being blocked, thereby increasing the filtering effect of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the main schematic diagram of the present invention.

[0012] Figure 2 It is a schematic diagram of the internal structure when the present invention has two guide plates.

[0013] Figure 3 It is a structural schematic diagram of the guide plate of the present invention.

[0014] Figure 4 It is a structural diagram of embodiment 2 of the present invention.

[0015] Figure 5 It is a schematic diagram of the structure of embodiment 5 of the present invention.

[0016] Figure 6 It is a schematic diagram of the present invention when used for ultraviolet sterilization of commercial water heaters.

[0017] In the figure: tube body 1, mounting block 2, quartz tube 3, ultraviolet sterilization lamp 4, water inlet 5, water outlet 6, water inlet baffle 7, filter screen 8, drain valve 9, guide plate 10, diversion hole 11, water retaining inclined plate 12, water outlet hole 13, sterilization chamber 14, water inlet chamber 15. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0019] In the description of the invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the invention.

[0020] In the description of the invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components, and a fixed connection can be welding, gluing, etc. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Embodiment 1:

[0022] like Figure 1-3 As shown, an ultraviolet lamp sterilization device with a backwash structure includes a tube body 1, a mounting block 2 is arranged on the top of the tube body 1, a quartz tube 3 is installed in the tube body 1 through the mounting block 2, and an ultraviolet sterilization lamp 4 is arranged in the quartz tube 3. The above is the prior art, and the specific setting method will not be repeated here.

[0023] A water inlet 5 is arranged on the left side of the tube body 1, a water outlet 6 is arranged on the right side of the tube body 1, a water inlet baffle 7 is arranged on the left side inside the tube body 1, and the water inlet baffle 7 divides the inside of the tube body into a water inlet chamber 15 and a sterilization chamber 14, and a plurality of guide plates 10 are arranged in the sterilization chamber 14.

[0024] The guide plate 10 is provided with a plurality of flow guide holes 11, which are arranged in a circular array on the guide plate. A plurality of water retaining inclined plates 12 are obliquely arranged above each flow guide hole 11. The water retaining inclined plates are polished surfaces, which reflect ultraviolet rays into the flow guide holes 11, further increasing the sterilization efficiency. The angle between the water retaining inclined plates 12 and the guide plates is 15°-45°, so that water rotates and flows upward in the pipe body and cuts and disperses the water flow, increasing the sterilization effect. The specific number of the guide plates can be set according to the actual conditions such as the length of the pipe body.

[0025] A filter screen 8 is arranged below the tube body 1, and a plurality of water outlet holes 13 are arranged on the guide plate 7 below the filter screen 8. The water outlet holes are arranged upwardly and inclined toward the filter screen. The water outlet holes face the filter screen. When cleaning, the water inlet can be opened at the same time to let water in, and the water is rushed to the filter screen through the water inlet holes to increase the cleaning efficiency of the filter screen. A drain valve 9 is arranged at the lower part of the tube body 1. When sterilizing, water enters the water inlet cavity from the water inlet and flows downward, enters the sterilization cavity through the water outlet holes, is initially filtered through the filter screen, spirals upward, and then passes through the ultraviolet sterilization lamp for sterilization, and finally flows out through the water outlet.

[0026] When cleaning the filter, open the drain valve. Due to gravity, the residual water in the pipe body will flow downward to flush the filter, thereby achieving the effect of cleaning the filter, preventing the filter from being blocked, increasing the service life of the filter, and improving the filtering effect of the filter.

[0027] Embodiment 2:

[0028] This embodiment is the tube body 1 in embodiment 1, the tube body specification is Φ32mm×80mm, the built-in guide plate is three pieces, the guide plate 10 is provided with a central through hole in the center, and the quartz tube passes through the central through hole, and the central through hole is provided with an arc-shaped flange. The angle between the water retaining inclined plate on the guide plate and the guide plate is 45°, and the thickness is 1.5mm.

[0029] Embodiment 3:

[0030] In this embodiment, only the angle of the water retaining inclined plate is 15°, and the other structures are the same as those in Embodiment 2.

[0031] Embodiment 4:

[0032] In this embodiment, only the angle of the water retaining inclined plate is 30°, and the other structures are the same as those in Embodiment 2.

[0033] Embodiment 5:

[0034] In this embodiment, only the angle of the water retaining inclined plate is 60°, and the other structures are the same as those in Embodiment 2.

[0035] Embodiment 6:

[0036] This embodiment adopts a guide plate without a water retaining inclined plate, and other structures are the same as those of Embodiment 2.

[0037] Embodiment 7:

[0038] This embodiment is a tube body without a guide plate. Except for the absence of the guide plate, the other structures in the tube body are the same as those in Embodiment 2.

[0039] Now pour the E. coli liquid into a bucket filled with dechlorinated tap water, stir evenly, prepare spiked water as raw water, and test Examples 2-7 at a flow rate of 9 L / min using GB / T 5750.12-2006 "Standard Test Methods for Drinking Water - Microbiological Indicators". The test results are shown in Table 1:

[0040] Table 1:

[0041]

[0042] From Table 1 above, it can be seen that after the guide plate is set, even if there is no water-retaining inclined plate to change the direction of water flow, the sterilization effect can be improved, because the diversion holes will cut the water flow, thereby improving the sterilization effect. After the guide plate with a water-retaining inclined plate is set in the tube body of the UV sterilizer, the sterilization effect can be further improved, and the sterilization rate reaches more than 99.91%.

[0043] In order to further verify the sterilization effect of the present invention, the same raw water is used at a flow rate of 9L / min, and GB / T 5750.12-2006 "Standard Test Methods for Drinking Water - Microbiological Indicators" is used to test the UV sterilizer without a guide plate. When the tube body specification reaches Φ51mm×300mm long, the sterilization rate can reach 99%. This specification is much larger than Φ32mm×80mm. That is, for the same sterilization effect, the present invention only needs 4 / 15 of the length of the existing tube body and a smaller diameter, which occupies less space and is more practical.

[0044] Example 8

[0045] like Figure 6 As shown, this embodiment is based on the embodiment 2, and a timer switch is added to the valve. Specifically, when the present invention is used for ultraviolet sterilization of commercial water heaters, the water in the water tank is first filtered through PP cotton and activated carbon before being pumped into the present invention by the pump. After entering the present invention, the lower part of the pipe body is connected to the water tank through a water pipe, so that the water for flushing the filter screen flows into the water tank again for reuse. A timer switch is installed on the valve to control the valve to open once every thirty minutes on average to flush the filter screen, and each flushing lasts three minutes. After flushing, the water flows back into the water tank for recycling. This method saves water and greatly increases the overall sterilization performance.

[0046] When the present invention is used for ultraviolet sterilization of domestic water heaters, the lower part of the pipe body is connected to the sewer, and the valve is opened for flushing for two minutes every three hours on average through a timer switch control valve, so that the present invention can achieve the antibacterial effect while saving water resources.

[0047] In this embodiment, the time setting and line connection of the above-mentioned specific timing switch are already existing technologies and will not be described in detail here.

[0048] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An ultraviolet lamp sterilization device with a backwashing structure, comprising a tube body (1), a mounting block (2) being arranged on the top of the tube body (1), a quartz tube (3) being installed in the tube body (1) via the mounting block (2), and an ultraviolet sterilization lamp (4) being arranged in the quartz tube (3), characterized in that: The tube body (1) is provided with a water inlet (5) on the left side, the tube body (1) is provided with a water outlet (6) on the right side, a water inlet baffle (7) is provided on the left side inside the tube body (1), the water inlet baffle (7) divides the inside of the tube body into a water inlet chamber (15) and a sterilization chamber (14), a plurality of guide plates (10) are provided in the sterilization chamber (14), a filter screen (8) is provided below the tube body (1), and the guide plate (10) is located below the filter screen (8). A plurality of water outlet holes (13) are arranged at the position, and a drain valve (9) is arranged at the lower part of the pipe body (1); a plurality of flow guide holes (11) are arranged on the guide plate (10), and the plurality of flow guide holes (11) are arranged in a circular row on the guide plate, and a plurality of water retaining inclined plates (12) are obliquely arranged on each of the flow guide holes (11), and the angle between the water retaining inclined plates (12) and the guide plate (10) is 15°-45°, and the guide plate (10) is made of stainless steel.

2. The ultraviolet lamp sterilization device with a backwashing structure according to claim 1 is characterized in that: A central through hole is provided in the center of the guide plate (10), and the quartz tube passes through the central through hole, and the central through hole is provided with an arc-shaped flange.

3. The ultraviolet lamp sterilization device with a backwashing structure according to claim 1, characterized in that: The water outlet hole (13) is arranged obliquely upward in the direction of the filter screen (8).

4. The ultraviolet lamp sterilization device with a backwashing structure according to claim 1, characterized in that: The surface of the water retaining inclined plate (12) is a polished surface.

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