A nano-bubble assisted cleaning nozzle and system

Abstract

The application relates to the technical field of cleaning spray heads, in particular to a nano-bubble-assisted cleaning spray head and system, which comprises a mounting plate, a flow guide connecting pipe and a bubble nozzle. The top of the mounting plate is fixedly connected with a positioning clamping base, the top of the positioning clamping base is detachably connected with a top plate, the positioning clamping base is used for positioning the flow guide connecting pipe, the flow guide connecting pipe is fixedly connected with the bubble nozzle and is in internal communication, the surface of the bubble nozzle is provided with elastic vibration pieces, the top surface of the top plate is provided with vibration plates corresponding to the elastic vibration pieces, the surface of the bubble nozzle is annularly arranged with a plurality of elastic vibration pieces, and the elastic vibration pieces are connected with elastic connecting rings. The application aims at solving the problems that impurities will gradually accumulate to form blockages, the internal flow channel of the nozzle will become narrow, the flow of cleaning liquid will attenuate, and the pressure will be unstable with the prolongation of cleaning time.

Description

Technical Field

[0001] The present invention relates to the technical field of nozzle cleaning, in particular to a nano bubble assisted nozzle cleaning system. Background Art

[0002] Nanobubble cleaning uses the dual mechanisms of physical cavitation stripping and chemical oxidation decomposition to efficiently remove pollutants on the surface of photovoltaic silicon wafers while protecting the surface microstructure to the greatest extent. It is both environmentally friendly and economical, and is an important direction for the next generation of photovoltaic cleaning technology. When nanobubbles burst on or near the surface of the silicon wafer, they instantly release energy, generating local high-pressure and high-speed microjets. The microjets impact pollutants such as metal particles and polishing liquid residues, destroying their van der Waals forces and electrostatic adsorption with the silicon wafer surface, achieving physical stripping. When the bubbles burst, high-frequency shock waves are generated, penetrating the microstructure of the silicon wafer surface, such as the pyramid texture formed by texturing, and removing submicron pollutants within the texture. When the nanobubbles burst, the high-energy environment at the gas-liquid interface promotes the dissociation of water molecules, generating strong oxidizing free radicals, and decomposing organic pollutants. The burst of nanobubbles causes a local pH decrease, which promotes the dissolution and removal of metal ions.

[0003] In nanobubble cleaning technology, the nozzle is the core executive component, and its precise spraying ability directly determines the cleaning effect. However, during the cleaning process, the nozzle is very likely to be clogged due to the attachment and accumulation of impurities. The impurities mainly come from dirt particles on the surface of the object to be cleaned. During the flushing process of the cleaning liquid, they are carried to the vicinity of the nozzle and settle and adhere due to changes in flow rate. The attachment of these impurities has obvious regional tendencies and is particularly prone to being retained in areas with strong fluid disturbance or slow flow rate such as the streamline corners of the inner wall of the nozzle and the edge of the outlet. In the early stage, it only manifests as local trace attachment. As the cleaning time increases, impurities will gradually accumulate to form obstructions, narrowing the internal flow channel of the nozzle, resulting in attenuation of the cleaning liquid flow and unstable pressure, resulting in uneven spray coverage and the appearance of local cleaning blind spots. Summary of the Invention

[0004] The purpose of the present invention is to provide a nanobubble-assisted cleaning nozzle and system to solve the problem that as the cleaning time increases, impurities will gradually accumulate to form blockages, causing the internal flow channel of the nozzle to narrow, resulting in attenuation of cleaning liquid flow and unstable pressure.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A nano-bubble assisted cleaning nozzle includes a mounting plate, a guide connecting pipe and a bubble nozzle. The top of the mounting plate is fixedly connected to a positioning card seat, and the top of the positioning card seat is detachably connected to a top plate. The positioning card seat is used to position the guide connecting pipe. The guide connecting pipe is fixedly connected to the bubble nozzle and is internally connected. An elastic vibration plate is installed on the surface of the bubble nozzle, and a vibration dial for moving the elastic vibration plate is correspondingly provided on the top surface of the top plate.

[0007] Preferably, a plurality of elastic vibration sheets are arranged in a ring array on the surface of the bubble nozzle, and an elastic connecting ring is connected between each of the elastic vibration sheets.

[0008] Preferably, the surface of the top plate is rotatably connected to a vertically arranged screw rod, and the surface of the vibration dial plate is fixedly connected to a vertically arranged movable seat, and the movable seat is provided with a thread groove for threaded connection of the screw rod.

[0009] Preferably, a guide protective sleeve is fixedly connected to the surface of the top plate, and a guide groove is correspondingly provided on the movable seat, and the guide groove and the guide protective sleeve are slidably matched.

[0010] Preferably, a positioning block is fixedly connected to the surface of the diversion connecting pipe, and a positioning groove for the positioning block to be embedded in the inner wall of the positioning socket is formed.

[0011] A nanobubble-assisted cleaning system comprises the nanobubble-assisted cleaning nozzle, a bubble pool and a clear water pool, wherein the mounting plate is fixedly mounted on the inner wall of the bubble pool, a water inlet pipe is mounted on the surface of the bubble pool, a liquid inlet joint is mounted on the surface of the diversion connecting pipe, and the liquid inlet joint is connected to the water inlet pipe through a pipe.

[0012] Preferably, the bubble pool and the clear water pool are connected in a splicing manner, and a return pipe is installed on the surface of the clear water pool.

[0013] Preferably, an overflow trough is provided at the connection between the clear water pool and the bubble pool.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By periodically moving the vibration plate up and down, the elastic vibration plate can bend and then generate vibration with the help of elastic reset, which in turn drives the bubble nozzle to vibrate. This vibration is transmitted to the bubble nozzle, which can shake off attached impurities through mechanical vibration, preventing blockage and playing an anti-clogging role. The elastic vibration plate is formed into an integral whole by an elastic connecting ring. The drive structure of the screw rod and the movable seat is modular. The functions of each component are clear and the linkage is strong, which reduces the difficulty of assembly and maintenance.

[0016] 2. The vibration plate is driven up and down by the threaded connection between the screw and the movable base, ensuring stable power transmission. The guide sleeve not only protects the screw from contamination by impurities, but also provides a rigid guide for the movable base to prevent deviation, ensuring that the vibration plate accurately acts on the elastic vibration plate, and improving the stability of the anti-blocking effect.

[0017] 3. Multiple elastic vibration plates are arranged in a circular array on the surface of the bubble nozzle, and cooperate with the elastic connecting ring to form an overall structure. Turning any vibration plate can drive all vibration plates to vibrate synchronously, ensuring that the vibration is evenly distributed in the circumferential direction of the nozzle, covering the nozzle without dead angles, avoiding dead angle blockage caused by local loss of vibration sensation, and specifically solving the problem of local blockage of traditional nozzles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the installation of the cleaning nozzle of the present invention;

[0019] Figure 2 This is a schematic structural diagram of the cleaning nozzle of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the mounting plate of the present invention;

[0021] Figure 4 It is a cross-sectional schematic diagram of the combination of the top plate and the vibration paddle plate of the present invention;

[0022] Figure 5 is a schematic cross-sectional view of the top plate of the present invention;

[0023] Figure 6 is a cross-sectional schematic diagram of the vibration paddle of the present invention;

[0024] Figure 7 It is a partial structural schematic diagram of the cleaning system of the present invention.

[0025] In the figure: 1. Bubble pool; 2. Mounting plate; 3. Positioning card seat; 4. Positioning groove; 5. Positioning block; 6. Diversion connecting pipe; 7. Liquid inlet joint; 8. Water inlet pipe; 9. Overflow trough; 10. Clear water pool; 11. Return pipe; 12. Top plate; 13. Drive motor; 14. Screw; 15. Guide protection sleeve; 16. Moving seat; 17. Vibration dial plate; 18. Bubble nozzle; 19. Elastic vibration plate; 20. Elastic connecting ring; 21. Guide groove; 22. Threaded groove. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figures 1 to 6 , the present invention provides a technical solution.

[0028] The top of the positioning card holder 3 is detachably connected to the top plate 12, and the top plate 12 is detachably connected to the top plate 12. The detachable method can be adaptively selected, for example, by bolt connection. The detachable top plate 12 adopts a detachable connection method such as bolts, which is convenient for later disassembly and maintenance, solves the problem of cumbersome disassembly of traditional fixed structures, and improves the maintenance efficiency of the equipment. The positioning card holder 3 is used to position the guiding connecting pipe 6. The specific positioning method is: the surface of the guiding connecting pipe 6 is fixedly connected with a positioning block 5, and the inner wall of the positioning card holder 3 is cooperated to open a positioning groove 4 for the positioning block 5 to be embedded. During assembly, the positioning block 5 is first embedded in the positioning groove 4 to connect the guiding connecting pipe 6 to the positioning card holder 3, and then the top plate 12 is installed on the top surface of the positioning card holder 3 to prevent the positioning block 5 from detaching from the positioning groove 4. The nozzle 18 is fixedly connected and internally connected. An elastic vibration piece 19 is installed on the surface of the bubble nozzle 18. A vibration dial 17 for dialing the elastic vibration piece 19 is correspondingly provided on the top surface of the top plate 12. By periodically moving the vibration dial 17 up and down, the elastic vibration piece 19 can be bent and then vibrate with the help of elastic reset, thereby driving the bubble nozzle 18 to vibrate. This vibration is transmitted to the bubble nozzle 18, which can shake off the attached impurities through mechanical vibration to prevent blockage and play an anti-blocking role. The various components cooperate with each other. The vibration dial 17 is indirectly connected to the top plate 12 through the sliding cooperation between the moving seat 16 and the screw rod 14. The movement trajectory of the vibration dial 17 is jointly constrained by the threaded transmission of the screw rod 14 and the thread groove 22 and the sliding guide of the guide groove 21 and the guide protective sleeve 15. The vibration dial 17 is made of SUS316L stainless steel and the surface is treated with chemical nickel-phosphorus alloy plating to adapt to the chemical environment of the nano bubble cleaning liquid.

[0029] A plurality of elastic vibration plates 19 are arranged in a circular array on the surface of the bubble nozzle 18, and an elastic connecting ring 20 is connected between each elastic vibration plate 19, so that the plurality of elastic vibration plates 19 are connected as a whole. Therefore, by turning any elastic vibration plate 19, all vibration plates can be driven to vibrate synchronously, ensuring that the bubble nozzle 18 is vibrated all around. By arranging a plurality of elastic vibration plates 19 in a circular array, the vibration points can be evenly distributed in the circumferential direction of the bubble nozzle 18, and the bubble nozzle 18 is targetedly covered all around. This design ensures that each direction of the nozzle is directly vibrated, avoiding dead corner blockage caused by local lack of vibration.

[0030] The surface of the top plate 12 is rotatably connected to a vertically arranged screw rod 14, and the surface of the vibration dial plate 17 is fixedly connected to a vertically arranged moving seat 16. The moving seat 16 is provided with a threaded groove 22 for threaded connection of the screw rod 14. By rotating the screw rod 14 and through the threaded cooperation between the screw rod 14 and the moving seat 16, the rotating screw rod 14 can drive the moving seat 16 to move axially along the screw rod 14, thereby driving the vibration dial plate 17 to move up and down to dial the elastic vibration piece 19. A drive motor 13 is installed at the lower end of the top plate 12, and the output end of the drive motor 13 is coaxially fixedly connected to the screw rod 14. Starting the drive motor 13 can drive the screw rod 14 to rotate. Considering the working environment, a submersible motor can be selected for the drive motor 13.

[0031] The surface of the top plate 12 is fixedly connected with a guide protective sleeve 15, and a guide groove 21 is correspondingly opened on the movable seat 16. The guide groove 21 slides with the guide protective sleeve 15. The guide protective sleeve 15 plays a role in protecting the screw rod 14. During the up and down movement of the movable seat 16, it can block or wrap the screw rod 14 to prevent external impurities from contacting the screw rod 14 thread, ensuring that the threaded cooperation between the screw rod 14 and the movable seat 16 is always smooth and reliable. The guide protective sleeve 15 is sleeved on the outside of the screw rod 14 and is in contact with the movable seat 16. The guide groove 21 is slidably fitted, and during the up and down movement of the movable seat 16, the protective cover always blocks or wraps the screw rod 14. An annular gap is reserved between the guide protective cover 15 and the screw rod 14. When the movable seat 16 moves axially along the screw rod 14, the guide protective cover 15 always covers the area of ​​the screw rod 14 that is not blocked by the movable seat 16. The threaded groove 22 of the movable seat 16 directly engages with the screw rod 14, and the guide protective cover 15 slides with the movable seat 16 through the guide groove 21 to form an independent guide system.

[0032] The precise sliding fit between the guide groove 21 and the guide protective sleeve 15 provides additional support and guidance for the movable seat 16. During the screw transmission process, if the drive only relies on the threaded pair, the movable seat 16 may be offset or shaken due to the lateral force, affecting the alignment accuracy between the paddle and the elastic vibration piece 19. The guide structure limits the freedom of the movable seat 16, offsets the lateral force, and makes the movement trajectory of the movable seat 16 more precise, ensuring that the vibration paddle 17 can accurately paddle the elastic vibration piece 19, thereby improving the stability of the anti-blocking effect.

[0033] See also Figures 1 to 7A nano bubble assisted cleaning system includes a nano bubble assisted cleaning nozzle, a bubble pool 1 and a clean water pool 10. The mounting plate 2 is fixedly installed on the inner wall of the bubble pool 1. A water inlet pipe 8 is installed on the surface of the bubble pool 1. A liquid inlet joint 7 is installed on the surface of the diversion connecting pipe 6. The liquid inlet joint 7 and the water inlet pipe 8 are connected through a pipeline. The diversion connecting pipe 6 adopts a tree-like diversion structure (for example, an H-shaped tree structure). The diversion connecting pipe 6 includes an installation positioning section and a liquid inlet diversion section. The positioning block 5 is arranged in the installation positioning section and cooperates with the positioning card seat 3. The liquid inlet joint 7 is arranged on the side wall surface of the liquid inlet diversion section to connect the external liquid supply pipeline. The three are formed into a continuous flow channel by casting or welding.

[0034] The bubble pool 1 and the clean water pool 10 are connected by splicing. An overflow trough 9 is provided at the connection between the clean water pool 10 and the bubble pool 1, so that the bubble pool 1 and the clean water pool 10 can communicate with each other through overflow. A return pipe 11 is installed on the surface of the clean water pool 10.

[0035] The bubble pool 1 serves as the core generation area of ​​nanobubbles. A cleaning liquid containing nanobubbles is transported to the flow guide connecting pipe 6 via the water inlet pipe 8 and the liquid inlet joint 7. Nanobubbles have a high specific surface area, strong adsorption properties, and slow floating characteristics, effectively stripping and adsorbing dirt particles, improving cleaning efficiency. The bubble pool 1 is connected to the clean water tank 10 via the overflow trough 9. The liquid level difference is used to allow the liquid to flow naturally without the need for additional power, simplifying the system structure and reducing energy consumption. The combined design of the bubble pool 1 and the clean water tank 10 achieves the multiple goals of efficient cleaning, resource conservation, and system simplification through functional zoning, natural overflow, recycling, and modular structure.

[0036] It also includes a bubble generator, which has a stirring device and a pressure sensor inside. The stirring device is used to preliminarily mix water and ozone, and the pressure sensor is used to monitor the pressure inside the bubble generator. The outlet of the bubble generator is connected to the water inlet pipe 8 through a pipeline, and the bubble-containing mixed liquid is transported to the bubble nozzle 18 through the diversion connecting pipe 6.

[0037] It also includes an ozone generator, the air outlet of the ozone generator is connected to the air inlet of the bubble generator through a pipeline, and is used to generate ozone gas. The ozone concentration sensor is arranged at the air outlet of the ozone generator, which can monitor the ozone concentration in real time and feed back the signal to the intelligent control unit. The intelligent control unit adjusts the operating parameters of the ozone generator according to the set value.

[0038] It also includes a water tank and a water pump. The inlet of the water pump is connected to the water tank, and the outlet is connected to the water inlet of the bubble generator through a pipeline to provide a stable water flow for the system. A liquid level sensor is provided in the water tank to monitor the water level in real time and transmit the signal to the intelligent control unit. The return pipe 11 is connected to the water tank through a pipeline to form a water circulation system.

[0039] It also includes a water cooler. The cooling water outlet of the water cooler is connected to the cooling water inlet of the ozone generator through a pipeline to transport low-temperature cooling water. The cooling water outlet of the ozone generator returns the hot water after absorbing heat to the return water outlet of the water cooler through a pipeline. After being cooled by the water cooler, it circulates again to achieve continuous cooling of the ozone generator.

[0040] First, the water pump transports the water in the water tank to the bubble generator. At the same time, the ozone gas generated by the ozone generator is also introduced into the bubble generator. In the bubble generator, the stirring device preliminarily mixes the water and ozone to form a mixed liquid containing micron-sized bubbles. The mixed liquid containing micron-sized bubbles is subjected to strong mechanical shearing through the high-speed rotation of the rotating impeller, which further breaks up the micron-sized bubbles and mixes them evenly. Subsequently, when the mixed liquid flows through the Venturi tube structure, the sudden change in flow velocity produces a hydraulic cavitation effect, which causes the bubbles to be subjected to strong impact and stretching, breaking them into submicron-sized bubbles. The submicron-sized bubbles are acted upon by the ultrasonic waves emitted by the ultrasonic vibrator, resonate and burst, and eventually form nanobubbles with a diameter of less than 50nm.

[0041] The cleaning liquid containing nanobubbles is sprayed out through the bubble nozzle 18 and acts on the surface of the object to be cleaned in the clean water tank 10. The nanobubbles gradually shrink and burst during the rising process, generating local high pressure and hydroxyl free radicals. At the same time, ozone has strong oxidizing properties and can decompose organic pollutants to achieve efficient cleaning of the object to be cleaned. The excess liquid in the bubble tank 1 overflows into the clean water tank 10 through the overflow tank 9, completing the cycle.

[0042] The specific scheme is as follows: start the water tank and the water pump, so that the water in the water tank is transported to the water inlet of the bubble generator through the water pump to ensure that the water flow is stable, start the ozone generator to generate ozone gas, and the ozone gas is transported to the air inlet of the bubble generator through the pipeline. At the same time, observe the value of the ozone concentration sensor to ensure that the ozone concentration meets the cleaning requirements. If the concentration does not meet the requirements, adjust the operating parameters of the ozone generator through the intelligent control unit, start the bubble generator, and the stirring device inside it starts to work to preliminarily mix the water and ozone. At the same time, the pressure sensor monitors the pressure inside the bubble generator in real time to ensure that the pressure is within the normal working range. After the mixed liquid in the bubble generator reaches a certain amount, the mixed liquid containing bubbles is transported to the water inlet pipe 8 through the pipeline, and then enters the diversion connecting pipe 6 through the liquid inlet joint 7, and finally flows to the bubble nozzle 18.

[0043] The cleaning liquid containing nano bubbles is sprayed out from the bubble nozzle 18 and acts on the surface of the object to be cleaned in the bubble pool 1. The drive motor 13 is started periodically, and the drive motor 13 drives the screw 14 to rotate. Since the movable seat 16 is threadedly connected to the screw 14, the rotation of the screw 14 causes the movable seat 16 to move up and down along the axis of the screw 14, thereby driving the vibration dial 17 to move up and down. During the up and down movement of the vibration dial 17, the elastic vibration plate 19 on the surface of the bubble nozzle 18 is moved. After the elastic vibration plate 19 is bent, it vibrates with the help of elastic reset. Through the elastic connecting ring 20, all the elastic vibration plates 19 are driven to vibrate synchronously, thereby driving the bubble nozzle 18 to vibrate to prevent impurities from clogging the nozzle. The liquid in the bubble pool 1 smoothly overflows into the clean water tank 10 through the overflow groove 9. At the same time, the liquid in the clean water tank 10 returns to the water tank through the return pipe 11 to form a water circulation system.

[0044] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A nano bubble assisted cleaning nozzle, comprising a mounting plate (2), a flow guide connecting pipe (6) and a bubble nozzle (18), characterized in that: The top of the mounting plate (2) is fixedly connected to a positioning card seat (3), and the top of the positioning card seat (3) is detachably connected to a top plate (12). The positioning card seat (3) is used to position the diversion connecting pipe (6). The diversion connecting pipe (6) is fixedly connected to the bubble nozzle (18) and is internally connected. An elastic vibration plate (19) is installed on the surface of the bubble nozzle (18), and a vibration dial plate (17) for dialing the elastic vibration plate (19) is correspondingly provided on the top surface of the top plate (12); The surface of the top plate (12) is rotatably connected to a vertically arranged screw rod (14), and the surface of the vibration dial plate (17) is fixedly connected to a vertically arranged movable seat (16), and the movable seat (16) is provided with a thread groove (22) for threaded connection of the screw rod (14); A driving motor (13) is installed at the lower end of the top plate (12), and the output end of the driving motor (13) is coaxially fixedly connected to the screw rod (14).

2. The nano bubble assisted cleaning nozzle according to claim 1, characterized in that: A plurality of elastic vibration sheets (19) are arranged in a circular array on the surface of the bubble nozzle (18), and an elastic connecting ring (20) is connected between each of the elastic vibration sheets (19).

3. The nano bubble assisted cleaning nozzle according to claim 1, characterized in that: A guide protective sleeve (15) is fixedly connected to the surface of the top plate (12), and a guide groove (21) is correspondingly provided on the movable seat (16), and the guide groove (21) is slidably matched with the guide protective sleeve (15).

4. The nano bubble assisted cleaning nozzle according to claim 1, characterized in that: A positioning block (5) is fixedly connected to the surface of the diversion connecting pipe (6), and a positioning groove (4) for the positioning block (5) to be embedded is formed on the inner wall of the positioning holder (3).

5. A nano bubble assisted cleaning system, characterized in that: The invention comprises a bubble pool (1), a clean water pool (10) and the nano bubble assisted cleaning nozzle according to claim 4, wherein the mounting plate (2) is fixedly mounted on the inner wall of the bubble pool (1), a water inlet pipe (8) is mounted on the surface of the bubble pool (1), a liquid inlet joint (7) is mounted on the surface of the diversion connecting pipe (6), and the liquid inlet joint (7) and the water inlet pipe (8) are connected via a pipe; The diversion connecting pipe (6) adopts a tree-like diversion structure, and comprises an installation positioning section and a liquid inlet diversion section. The positioning block (5) is arranged on the installation positioning section, and the liquid inlet joint (7) is arranged on the side wall surface of the liquid inlet diversion section.

6. A nanobubble-assisted cleaning system according to claim 5, characterized in that: The bubble pool (1) and the clear water pool (10) are connected in a splicing manner, and a return pipe (11) is installed on the surface of the clear water pool (10).

7. The nanobubble-assisted cleaning system according to claim 5, characterized in that: An overflow trough (9) is provided at the connection between the clear water tank (10) and the bubble tank (1).

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