Microbubble cleaning device and method

Abstract

The invention discloses a micro-bubble cleaning device and method, and relates to the technical field of liquid cleaning, the micro-bubble cleaning device comprises a gas-liquid mixing device used for generating micro-bubbles, a cleaning tank used as a cleaning cavity, and a micro-bubble adjusting device used for re-micro-bubbling of a gas-liquid mixture; a gas-liquid-cleaning tank control valve and a gas-liquid-adjusting device control valve are arranged between the gas-liquid mixing device and the cleaning tank and between the gas-liquid mixing device and the microbubble adjusting device in a communicating mode, and the microbubble adjusting device is communicated with a gas generating device. The gas-liquid mixture is subjected to re-microbubbling through the microbubble adjusting device, the variable-diameter jet pipe is arranged for pressurization, the blade group cuts the gas-liquid mixture at a high speed, and the air holes uniformly distributed in an array form uniformly release gas, so that the bubble density in the gas-liquid mixture is improved, the size of the microbubbles is further reduced, and the uniformity of bubble distribution is improved; and microbubble attenuation or quenching caused by long-distance microbubble conveying is avoided, so that a stable and continuously-adjustable good cleaning effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cleaning, and in particular to a micro-bubble cleaning device and method for cleaning objects. Background Art

[0002] Microbubbles usually refer to bubbles with a size between 1 and 1000 μm. They have the characteristics of large specific surface area, slow floating speed, long residence time, high interfacial potential, high interphase mass transfer efficiency, and strong adsorption performance. Based on the above characteristics, they exhibit the functionality of self-pressurized dissolution, free radical generation, and enhanced mass transfer efficiency. As a result, they have been widely used in sewage treatment, flotation, oil production and metallurgical industry, film production, medical diagnosis and treatment, etc.

[0003] Through prior art search, there are the following known technical solutions: Prior art 1: A pressurized dissolved air micro-nano bubble generator and its working method Application number: CN202410627186.7, application date: 2024.05.21, publication (announcement) date: 2024.08.13.

[0004] Prior art 1 is applicable to the field of wastewater treatment and environmental cleaning, and specifically provides a pressurized dissolved air micro-nano bubble generator, which is composed of an air compressor, an air pipe, a water tank, and a micro-nano bubble generator. Clean water is provided inside the water tank, and the micro-nano bubble generator is placed inside the water tank; the air compressor provides an air source and pressure. The micro-nano bubble generator is mainly composed of an air intake structure, a bubble generating structure, and an air outlet structure; the air intake structure is connected to the air pipe and connected to the air compressor, and the air entering the micro-nano bubble generator is changed by adjusting the pressure of the air compressor; the bubble generating structure is connected to the air intake structure in the gas-liquid mixing area at the lower end of the generator through an inorganic ceramic membrane to generate micro-nano bubbles, and micro-nano bubble water is obtained through the air outlet structure. The present invention can realize the generation of uniform and stable micro-nano bubbles at a low cost through a pressurized dissolved air micro-nano bubble generator, and can also be used for wastewater treatment and environmental cleaning to improve its treatment efficiency.

[0005] However, the prior art 1 uses an air compressor to inject gas into the water body to form a gas-water mixture, and forms microbubbles through the micropores of the ceramic aeration release head. The size of the generated microbubbles is mainly concentrated above 150um, and the microbubble size is relatively large. The larger the size of the microbubble, the shorter the residence time in the water body, the more unstable it is, and it is easy to overflow, and the cleaning effect is difficult to guarantee.

[0006] Prior art 2: Microbubble cleaning device and microbubble cleaning method Application number: CN201780046445.5, application date: 2017.07.28, publication (announcement) date: 2019.04.02.

[0007] Prior art 2 discloses a microbubble generating device that generates microbubbles in a cleaning liquid to generate a bubble cleaning liquid; a bubble spontaneous bursting device that shortens the life of the microbubbles in the bubble cleaning liquid to generate a short-life bubble cleaning liquid; and a cleaning tank that is used to bring the short-life bubble cleaning liquid into contact with an object to be cleaned. The microbubble cleaning device pre-sets the life of the microbubbles to be short, so that the microbubbles spontaneously burst when they reach the object to be cleaned, thereby improving the cleaning power.

[0008] Prior art 3: An industrial micro-nano bubble cleaning device Application number: CN202321397159.2, application date: 2023.06.04, publication (announcement) date: 2023.11.28.

[0009] Prior art 3 relates to the technical field of automatic cleaning equipment, and in particular to an industrial micro-nano bubble cleaning device, including a cleaning tank, wherein a secondary water tank is provided below the first cleaning tank; the first cleaning tank is provided with a drain port, and the drain port is connected to the secondary water tank; the secondary water tank is provided with a water pump connected by a pipeline, and the water pump is connected to an ejector; the ejectors are provided in two groups, and the jet directions of the two groups of ejectors intersect; the secondary water tank is also connected with a gas-liquid mixing pump through a pipeline, and the first cleaning tank is provided with a nano bubble releaser, and the gas-liquid mixing pump is connected to the nano bubble releaser. By providing ejectors with mutually intersecting jet directions, the mobility of nano bubbles is increased, and the cleaning ability of heavily polluted industrial product parts is improved. Moreover, this device does not require the additional use of petroleum-based solvent cleaning agents, which reduces the difficulty of subsequent sewage treatment, saves resources, and reduces the cost of cleaning production.

[0010] The above-mentioned prior art 2 and prior art 3 respectively enhance the cleaning ability of microbubbles through a microbubble spontaneous rupture device, and increase the mobility of nanobubbles by setting ejectors with intersecting jet directions, so as to improve the cleaning ability of heavily polluted industrial product parts. However, both of them cannot achieve effective regulation of the density of microbubbles in the cleaning system, and the density of microbubbles in the gas-liquid mixture formed by long-distance transportation cannot be effectively controlled.

[0011] Through the above search, it is found that the above technical solutions do not affect the novelty of the present invention; and the mutual combination of the above prior arts does not destroy the creativity of the present invention. Summary of the invention

[0012] In order to avoid the above-mentioned deficiencies in the prior art, the present invention provides a micro-bubble cleaning device and method.

[0013] The present invention adopts the following technical solutions to solve the technical problems: a microbubble cleaning device, comprising a gas-liquid mixing device for generating microbubbles and a cleaning tank as a cleaning chamber, wherein the outlet of the gas-liquid mixing device is connected to the inlet opened at the lower part of the cleaning tank, and the outlet of the cleaning tank is opened at the upper part, and further comprising a microbubble regulating device, a gas-liquid-cleaning tank control valve, a gas-liquid-regulating device control valve and a gas generating device, wherein the outlet of the gas-liquid mixing device is connected to the inlet of the cleaning tank and the gas-liquid-cleaning tank control valve is provided; The micro-bubble regulating device is provided with a tank body, a water inlet pipe, a release pipe and at least one level of bubble regulating structure; when only one level of the bubble regulating structure is provided, the bubble regulating structure serves as both the first level and the last level; when multiple levels of the bubble regulating structure are provided, the bubble regulating structures at each level are connected in sequence step by step; The end of the water inlet pipe is connected to the inlet of the first-stage bubble regulating structure, and the front end is connected to the gas-liquid outlet, and the gas-liquid regulating device control valve is also connected between the front end of the water inlet pipe and the gas-liquid outlet; the outlet of the final-stage bubble regulating structure is connected to the tank body through the release pipe; the tank body is provided with a tank body water outlet, and the tank body water outlet is connected to the inlet of the cleaning tank between the gas-liquid-cleaning tank control valve and the inlet of the cleaning tank; The air inlet end of the bubble regulating structure is connected to the gas generating device, and an air inlet control valve is provided between the two.

[0014] Further, the bubble regulating structure includes a jet tube and a gas releaser; The gas releaser is an annular columnar structure, the center of which forms a cylindrical cavity, and the annular columnar structure is hollow, forming an inner cavity; The inner cavity serves as the air inlet end of the bubble regulating structure, is connected to the gas generating device, is filled with microporous hydrophobic filler, and is connected to the containing cavity through the air holes evenly distributed in an array on the inner side wall of the annular cylindrical structure; The cavity connects the jet tube with the jet tube in the next-level bubble regulating structure or the release tube.

[0015] Furthermore, the jet tube has a variable diameter structure with a diameter decreasing in sections from the front end to the rear end, and the diameter of the jet tube in each level of the bubble adjustment structure decreases step by step.

[0016] Furthermore, the microbubble regulating device is also provided with a blade set; The blade group is provided at least at any one of the inlet of the jet tube and the inlet of the release tube in each of the bubble regulating structures; the blade group includes annular blades sequentially arranged along the axial direction of the jet tube or the release tube.

[0017] Furthermore, at least two blade groups are provided in the microbubble regulating device, and from the water inlet pipe toward the release pipe, the angle between the annular blade in each blade group and the corresponding jet pipe or the release pipe decreases.

[0018] Furthermore, the center of the bottom of the tank body is concave upward to form an installation bin separated from the interior of the tank body, and the water inlet pipe, the bubble adjustment structures at each level and the release pipe are arranged from bottom to top in the installation bin; The release pipe is connected to the interior of the tank body at the upper part of the tank body, and the water outlet of the tank body is opened at the lower part of the tank body; inside the tank body, between the top of the installation bin and the water outlet of the tank body, baffles of various annular structures are arranged vertically around the circumference of the installation bin, and the baffles are arranged downwardly from the center to the outside.

[0019] Furthermore, it also includes a control module and a water inlet flow meter, a gas-liquid mixing device pressure gauge, a bubble density detector, a tank pressure gauge and a gas regulating pressure gauge which are data-connected with the control module; the water inlet flow meter is connected between the gas-liquid water inlet and the water source; the gas-liquid mixing device pressure gauge is used to measure the pressure at the gas-liquid outlet, and the bubble density detector is used to detect the bubble density in the cleaning tank; The tank pressure gauge is used to measure the internal pressure of the tank; the gas regulating pressure gauge is used to measure the gas supply pressure of the gas generating device; The control module is also data-connected with the water inlet regulating valve, the air inlet regulating valve, the gas-liquid-cleaning tank control valve, the gas-liquid-regulating device control valve and the gas generating device.

[0020] Furthermore, the inlet of the cleaning tank is connected to a mixture release structure with hole-shaped outlets arranged in an array, the mixture release structure is located at the bottom of the cleaning tank, and each of the hole-shaped outlets faces upward.

[0021] Furthermore, the gas-liquid mixing device includes a gas-liquid mixing pump, a water inlet flow regulating valve and an air inlet regulating valve; The gas-liquid mixing pump is provided with two inlets, namely a gas-liquid water inlet and a gas-liquid air inlet, and one gas-liquid outlet; the gas-liquid water inlet is connected with the water source, and the water inlet flow regulating valve is provided between the two, and the gas-liquid air inlet is connected with the air source, and the air inlet regulating valve is provided between the two.

[0022] A microbubble cleaning method, using the above-mentioned microbubble cleaning device to clean an article, comprises the following steps: The first step is to confirm that all valves are in the closed state, then start the gas-liquid mixing device, open the water inlet regulating valve, the air inlet regulating valve and the gas-liquid-cleaning tank control valve; According to the type of items to be cleaned, adjust the opening of the water inlet regulating valve and the air inlet regulating valve so that the water source and the air source are respectively supplied from the gas-liquid water inlet and the gas-liquid air inlet at a preset initial water inlet flow rate. and the preset initial intake air flow Supply water and gas to the gas-liquid mixing pump to form a gas-liquid mixture enriched with microbubbles, which is then sent out from the gas-liquid outlet, flows through the gas-liquid-cleaning tank control valve and enters the cleaning tank to clean the items; In the second step, the bubble density detector measures the real-time bubble density in the gas-liquid mixture in the cleaning tank. To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the intake flow of the current intake regulating valve And the indication of the pressure gauge of the gas-liquid mixing device Make a judgment: like and , then adjust the opening of the intake regulating valve to increase the intake flow of the intake regulating valve , then execute the second step again; in, The preset re-intake air flow adjustment step is that the re-intake air flow adjustment at the intake control valve 6 is generally fine-tuned, so in actual setting, Generally significantly smaller than ; is the maximum allowable re-intake volume; Step 5: If If the micro-bubble regulating device 2 has a next-stage bubble regulating structure 23, the intake control valve 6 corresponding to the next-stage bubble regulating structure 23 is regulated and controlled according to the adjustment method of the intake control valve 6 of the first-stage bubble regulating structure 23 in the third step to the fourth step; like If the micro-bubble regulating device 2 has no next-stage bubble regulating structure 23, the re-intake flow rate of the intake control valve 6 of the first-stage bubble regulating structure 23 is set to Adjust to maximum value , clean the items until the cleaning is completed.

[0023] like or , then execute the third step; in, Adjust the step size for the preset intake flow. is the maximum allowable air intake volume, is the maximum allowable pressure; The third step is to close the gas-liquid-cleaning tank control valve and open the gas-liquid-regulating device control valve; Subsequently, the air intake control valve corresponding to the first-stage air bubble adjustment structure in the micro-bubble adjustment device is opened, and the opening of the air intake control valve is adjusted so that the gas generating device is at a preset initial re-intake flow rate. supplying air to the first-stage bubble regulating structure; At this time, the gas-liquid mixture sent out from the gas-liquid outlet flows through the gas-liquid regulating device control valve and enters the micro-bubble regulating device through the water inlet pipe, flows through each level of bubble regulating structure in turn, flows into the tank body through the release pipe, and then flows out of the micro-bubble regulating device through the tank body water outlet, and then enters the cleaning tank through the inlet of the cleaning tank to clean the items; The fourth step is to use a bubble density detector to measure the real-time bubble density of the gas-liquid mixture in the cleaning tank. To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the re-intake flow rate of the intake control valve of the first-stage bubble regulation structure is Make a judgment: like , then adjust the opening of the intake regulating valve to increase the intake flow of the intake regulating valve , then execute step 4 again; Otherwise, execute step 5; in, Adjust the step size for the preset re-intake air flow. is the maximum allowable re-intake volume; Step 5: If If the micro-bubble regulating device has a next-level bubble regulating structure, the air intake control valve corresponding to the next-level bubble regulating structure is regulated and controlled according to the regulating method of the air intake control valve of the first-level bubble regulating structure in the third and fourth steps; like If the micro-bubble regulating device has no next-level bubble regulating structure, the re-intake flow rate of the intake control valve of the first-level bubble regulating structure is set to Adjust to maximum value , clean the items until the cleaning is completed.

[0024] The present invention provides a micro-bubble cleaning device and method, which have the following beneficial effects: 1. The present invention re-microbubbles the gas-liquid mixture through a microbubble regulating device, thereby increasing the bubble density in the gas-liquid mixture and improving the uniformity of bubble distribution, thereby improving the cleaning effect of microbubble cleaning.

[0025] 2. The gas-liquid mixing device of the present invention is provided with a variable diameter jet tube for pressurization, a blade group for high-speed cutting of the gas-liquid mixture, and array-shaped evenly distributed air holes for uniformly releasing gas, thereby further improving the density and uniformity of microbubbles after the gas-liquid mixture is secondary microbubbled, further reducing the size of microbubbles, and improving the cleaning effect of microbubble cleaning.

[0026] 3. The microbubble cleaning device of the present invention avoids the attenuation or quenching of microbubbles caused by long-distance microbubble transportation, and maintains the cleaning system with continuously adjustable cleaning effectiveness.

[0027] 4. The microbubble cleaning method of the present invention adjusts the gas-liquid ratio in the gas-liquid mixing device through the air intake regulating valve, and further realizes the re-intake volume adjustment of the multi-stage bubble adjustment structure of the microbubble adjustment device through the air intake control valve, and controls the bubble density in the cleaning tank in real time, thereby ensuring the effectiveness of cleaning and the stability of the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the principle of the present invention; Figure 2 It is a structural schematic diagram of the microbubble regulating device of the present invention;

[0029] In the figure: 1. Gas-liquid mixing device, 11. Gas-liquid mixing pump, 12. Gas-liquid water inlet, 13. Water inlet regulating valve, 14. Gas-liquid air inlet, 15. Air inlet regulating valve, 16. Gas-liquid outlet; 2. Micro-bubble regulating device, 21. Tank body, 22. Water inlet pipe, 23. Bubble regulating structure, 231. Jet tube, 232. Gas generator, 24. Release pipe, 25. Tank body water outlet, 26. Blade group, 27. Baffle; 3. Cleaning tank, 31. Mixture release structure; 4. Gas-liquid-cleaning tank control valve; 5. Gas-liquid-regulating device control valve; 6. Air inlet control valve; 7. Gas generating device. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0031] like Figure 1~Figure 2As shown, a microbubble cleaning device has the following structural relationship: it includes a gas-liquid mixing device 1 for generating microbubbles and a cleaning tank 3 as a cleaning chamber, the outlet of the gas-liquid mixing device 1 is connected with the inlet opened at the lower part of the cleaning tank 3, the outlet of the cleaning tank 3 is opened at the upper part, and also includes a microbubble regulating device 2, a gas-liquid-cleaning tank control valve 4, a gas-liquid-regulating device control valve 5 and a gas generating device 7, and the outlet of the gas-liquid mixing device 1 is connected with the inlet of the cleaning tank 3 and the gas-liquid-cleaning tank control valve 4 is provided; The micro-bubble regulating device 2 is provided with a tank body 21, a water inlet pipe 22, a release pipe 24 and at least one level of bubble regulating structure 23; when only one level of bubble regulating structure 23 is provided, the bubble regulating structure 23 serves as both the first level and the last level; when multiple levels of bubble regulating structures 23 are provided, the bubble regulating structures 23 of each level are connected in sequence. The end of the water inlet pipe 22 is connected to the inlet of the first-stage bubble regulating structure 23, and the front end is connected to the gas-liquid outlet 16, and a gas-liquid regulating device control valve 5 is also connected between the front end of the water inlet pipe 22 and the gas-liquid outlet 16; the outlet of the final-stage bubble regulating structure 23 is connected to the tank body 21 through a release pipe 24; the tank body 1 is provided with a tank body water outlet 25, and the tank body water outlet 25 is connected to the inlet of the cleaning tank 3 between the gas-liquid-cleaning tank control valve 4 and the inlet of the cleaning tank 3; The air inlet end of the bubble regulating structure 23 is connected to the gas generating device 7, and an air inlet control valve 6 is provided between the two.

[0032] During actual configuration, the tank body 21 should also be provided with an automatic exhaust valve for emptying as required.

[0033] Preferably, the bubble regulating structure 23 includes a jet tube 231 and a gas releaser 232; The gas releaser 232 is an annular cylindrical structure, wherein a cylindrical cavity is formed in the middle thereof, and the annular cylindrical structure is hollow, and an inner cavity is formed inside; The inner cavity serves as the air inlet end of the bubble regulating structure 23, which is connected to the gas generating device 7, and is filled with microporous hydrophobic filler, which is air-permeable and water-impermeable, so as to prevent the cleaning water from flowing into the air inlet regulating valve 15; The inner cavity is connected to the containing cavity through air holes evenly distributed in an array on the inner side wall of the annular cylindrical structure; The cavity connects the jet tube 231 with the jet tube 231 or the release tube 24 in the next-stage bubble adjustment structure 23 .

[0034] Preferably, the jet tube 231 has a variable diameter structure with a diameter decreasing in sections from the front end to the rear end, and the diameter of the jet tube 231 in each level of the bubble adjustment structure 23 decreases step by step.

[0035] The flow rate of the cleaning water increases as the diameter of the jet tube 231 decreases. When the cleaning water enters the cavity from the jet tube 231, it presents a high flow rate state, which is conducive to the full mixing of the cleaning water and the gas entering the cavity. In actual setting, in order to adapt to the variable diameter structure of the jet tube 231, a sealing connection structure should be provided at the bottom of the cavity in the gas generator 232 accordingly. Preferably, the bottom of the cavity is sealed, and a connection hole sealed and connected to the jet tube 231 is provided.

[0036] Preferably, the microbubble regulating device 2 is further provided with a blade assembly 26; A blade set 26 is provided at least at any one of the inlet of the jet tube 231 and the inlet of the release tube 24 in each bubble regulating structure 23 ; the blade set 26 includes annular blades sequentially arranged along the axial direction of the jet tube 231 or the release tube 24 .

[0037] The annular blade is used to cut the microbubbles at high speed to form microbubbles with high density and smaller size.

[0038] Preferably, at least two blade groups 26 are provided in the microbubble regulating device 2, and from the water inlet pipe 22 to the release pipe 24, the angle between the annular blade in each blade group 26 and the corresponding jet pipe 231 or the release pipe 24 decreases.

[0039] Preferably, the center of the bottom of the tank body 21 is concave to form an installation chamber separated from the inside of the tank body 21, and the water inlet pipe 22, the bubble adjustment structures 23 at each level and the release pipe 24 are arranged from bottom to top in the installation chamber; The release pipe 24 is connected to the inside of the tank body 21 at the upper part of the tank body 21, and the tank body water outlet 25 is opened at the lower part of the tank body 21; inside the tank body 21, baffles 27 of various annular structures are arranged vertically around the circumference of the installation bin between the top of the installation bin and the tank body water outlet 25, and the baffles 27 are arranged downwardly from the center to the outside.

[0040] The bottom-in-top-out structure of the microbubble regulating device 2 and the setting of the baffle 27 prevent the water flow from falling, thereby ensuring the stability of the microbubbles in the gas-liquid mixture.

[0041] Preferably, it also includes a control module and a water inlet flow meter, a gas-liquid mixing device pressure gauge, a bubble density detector, a tank pressure gauge and a gas regulating pressure gauge which are data-connected to the control module; the water inlet flow meter is connected between the gas-liquid water inlet 12 and the water source; the gas-liquid mixing device pressure gauge is used to measure the pressure at the gas-liquid outlet 16, and the bubble density detector is used to detect the bubble density in the cleaning tank 31; In actual setting, the collection end of the bubble density detector is preferably arranged in the middle to upper part of the cleaning tank 3, and the setting height is less than the outlet height of the cleaning tank 3; The tank pressure gauge is used to measure the internal pressure of the tank 21; the gas regulating pressure gauge is used to measure the gas supply pressure of the gas generating device 7; The control module is also data-connected with the water inlet regulating valve 13 , the air inlet regulating valve 15 , the gas-liquid-cleaning tank control valve 4 , the gas-liquid-regulating device control valve 5 and the gas generating device 7 .

[0042] In actual settings, the control module is preferably Siemens YK20221130PLCKZGPLC control system; The water inlet flow meter is preferably Shanghai Guanghua electromagnetic flow meter LDZ-6 type, with a flow rate of 0-100 tons / hour; the pressure gauge of the gas-liquid mixing device, the tank pressure gauge and the gas regulating pressure gauge are preferably Shanghai Instrument Group Co., Ltd. pressure gauge Y-150 type, with a range of (0-1.6MPa); The collection end of the bubble density detector is an image collection device such as a camera. The bubble density detector uses a dual-tip optical probe and high-speed imaging technology to monitor the microbubble density. Liang Qianqing, Bu Yifeng, Men Zhuowu. Research and Application Status of Microbubbles in Multiphase Systems[J]. Applied Chemical Industry, 2022, 51(9):2721-2725.

[0043] Preferably, the inlet of the cleaning tank 3 is connected to a mixture release structure 31 with hole-shaped outlets arranged in an array, and the mixture release structure 31 is located at the bottom of the cleaning tank 3, and each hole-shaped outlet faces upward.

[0044] Preferably, the gas-liquid mixing device 1 comprises a gas-liquid mixing pump 11, a water inlet flow regulating valve 13 and an air inlet regulating valve 15; The gas-liquid mixing pump 11 is provided with two inlets, a gas-liquid water inlet 12 and a gas-liquid air inlet 14, and one gas-liquid outlet 16; the gas-liquid water inlet 12 is connected to a water source, and a water inlet flow regulating valve 13 is provided between the two, and the gas-liquid air inlet 14 is connected to an air source, and an air inlet regulating valve 15 is provided between the two.

[0045] A microbubble cleaning method, using the above-mentioned microbubble cleaning device to clean an article, comprises the following steps: The first step is to confirm that all valves are in the closed state, then start the gas-liquid mixing device 1, open the water inlet regulating valve 13, the air inlet regulating valve 15 and the gas-liquid-cleaning tank control valve 4; According to the type of items to be cleaned, the opening of the water inlet regulating valve 13 and the air inlet regulating valve 15 is adjusted so that the water source and the air source are respectively supplied from the gas-liquid water inlet 12 and the gas-liquid air inlet 14 at a preset initial water inlet flow rate. and the preset initial intake air flow Supply water and gas to the gas-liquid mixing pump 11 to form a gas-liquid mixture enriched with microbubbles, which is sent out from the gas-liquid outlet 16 and flows through the gas-liquid-cleaning tank control valve 4 into the cleaning tank 3 to clean the items; In the second step, the bubble density detector measures the real-time bubble density in the gas-liquid mixture in the cleaning tank 3. To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the intake flow of the current intake regulating valve 15 And the indication of the pressure gauge of the gas-liquid mixing device Make a judgment: like and , then adjust the opening of the intake regulating valve 15 to increase the intake flow of the intake regulating valve 15 , then execute the second step again; like or , then execute the third step; in, Adjust the step size for the preset intake flow. To allow the maximum air intake, the gas-liquid mixing device 1 is generally limited by its own performance. It is the maximum allowable pressure, which is usually preset according to safety requirements; The third step is to close the gas-liquid-cleaning tank control valve 4 and open the gas-liquid-regulating device control valve 5; Then, the air intake control valve 6 corresponding to the first-stage air bubble adjustment structure 23 in the micro-bubble adjustment device 2 is opened, and the opening of the air intake control valve 6 is adjusted so that the gas generating device 7 is at a preset initial re-intake flow rate. Supplying air to the first-stage bubble regulating structure 23; At this time, the gas-liquid mixture sent out by the gas-liquid outlet 16 flows through the gas-liquid regulating device control valve 5 and enters the micro-bubble regulating device 2 through the water inlet pipe 22, flows through each level of bubble regulating structure 23 in sequence, flows into the tank body 21 through the release pipe 24, and then flows out of the micro-bubble regulating device 2 through the tank body water outlet 25, and then enters the cleaning tank 3 through the inlet of the cleaning tank 3 to clean the objects; Step 4: The bubble density detector measures the real-time bubble density in the gas-liquid mixture in the cleaning tank 3. To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the re-intake flow rate of the intake control valve 6 of the first-stage bubble adjustment structure 23 Make a judgment: like , then adjust the opening of the intake regulating valve 15 to increase the intake flow of the intake regulating valve 15 , then execute step 4 again; Otherwise, execute step 5; in, The preset re-intake air flow adjustment step is that the re-intake air flow adjustment at the intake control valve 6 is generally fine-tuned, so in actual setting, Generally significantly smaller than ; is the maximum allowable re-intake volume; Step 5: If If the micro-bubble regulating device 2 has a next-stage bubble regulating structure 23, the intake control valve 6 corresponding to the next-stage bubble regulating structure 23 is regulated and controlled according to the adjustment method of the intake control valve 6 of the first-stage bubble regulating structure 23 in the third step to the fourth step; like If the micro-bubble regulating device 2 has no next-stage bubble regulating structure 23, the re-intake flow rate of the intake control valve 6 of the first-stage bubble regulating structure 23 is set to Adjust to maximum value , clean the items until the cleaning is completed.

[0046] Example 1 In the above-mentioned micro-bubble cleaning device, the number of the bubble adjustment structures 23 is preferably two, and the water inlet diameters of the jet tubes 231 in the two bubble adjustment structures 23 are preferably decreased by 50%, that is, the diameter of the first-stage jet tube 231 is 1 / 2 of the water inlet tube 22, and the diameter of the second-stage jet tube 231 is 1 / 4 of the water inlet tube 22; The microbubble cleaning device is provided with two sets of blade groups 26; the first set of blade groups 26 is arranged at the inlet of the second-stage jet tube 231, the blade group 26 is preferably made of stainless steel, with a width of 3~5cm, and the angle between it and the second-stage jet tube 231 is preferably 60~85°; the second set of blade groups 26 is arranged at the inlet of the release tube 24, the blade group 26 is preferably made of stainless steel, with a width of 3~5cm, and the angle between it and the release tube 24 is preferably 75~85°.

[0047] According to the above-mentioned microbubble cleaning method, the microbubble cleaning device is used to clean objects, wherein the gas-liquid ratio of the gas-liquid mixture generated by the gas-liquid mixing device 1 is preferably 1:10, and the gas-liquid ratio of the gas-liquid mixture generated by the microbubble regulating device 2 is preferably 1:5 to 1:10.

[0048] Example 2 Based on the microbubble cleaning device of Example 1, the width of the first blade group 26 is further preferably 5 cm, and the angle between it and the second-stage jet tube 231 is further preferably 75°; the width of the second blade group 26 is further preferably 5 cm, and the angle between it and the release tube 24 is further preferably 82°.

[0049] Based on the microbubble cleaning method of Example 1, the gas-liquid ratio of the gas-liquid mixture generated by the microbubble adjusting device 2 is further preferably 1:10.

[0050] See Table 1 below for a comparison of the microbubble size distribution ratio in the gas-liquid mixture of this embodiment and commercially available equipment: Table 1 Comparison of microbubble size distribution ratio in gas-liquid mixture The microbubble cleaning device and method of this embodiment makes the proportion of microbubbles below 100 um in the cleaning tank 3 exceed 85%. Compared with commercially available equipment, the proportion of microbubbles below 100 um is greatly increased, thereby improving the effect of microbubble cleaning.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A microbubble cleaning device, comprising a gas-liquid mixing device (1) for generating microbubbles and a cleaning tank (3) as a cleaning chamber, wherein the outlet of the gas-liquid mixing device (1) is connected to an inlet opened at the lower part of the cleaning tank (3), and the outlet of the cleaning tank (3) is opened at the upper part, characterized in that: It also comprises a micro-bubble regulating device (2), a gas-liquid-cleaning tank control valve (4), a gas-liquid-regulating device control valve (5) and a gas generating device (7), wherein the gas-liquid-cleaning tank control valve (4) is provided between the outlet of the gas-liquid mixing device (1) and the inlet of the cleaning tank (3); The micro-bubble regulating device (2) is provided with a tank body (21), a water inlet pipe (22), a release pipe (24), and at least one level of bubble regulating structure (23); when only one level of the bubble regulating structure (23) is provided, the bubble regulating structure (23) serves as both the first level and the last level; when multiple levels of the bubble regulating structure (23) are provided, the bubble regulating structures (23) at each level are connected in sequence. The end of the water inlet pipe (22) is connected to the inlet of the first-stage bubble regulating structure (23), and the front end is connected to the gas-liquid outlet (16), and the gas-liquid regulating device control valve (5) is also connected between the front end of the water inlet pipe (22) and the gas-liquid outlet (16); the outlet of the final-stage bubble regulating structure (23) is connected to the inside of the tank body (21) through the release pipe (24); the tank body (1) is provided with a tank body water outlet (25), and the tank body water outlet (25) is connected to the inlet of the cleaning tank (3) between the gas-liquid cleaning tank control valve (4) and the inlet of the cleaning tank (3); The air inlet end of the bubble regulating structure (23) is in communication with the gas generating device (7), and an air inlet control valve (6) is provided between the two.

2. A microbubble cleaning device according to claim 1, characterized in that: The bubble regulating structure (23) comprises a jet tube (231) and a gas releaser (232); The gas releaser (232) is in the form of an annular columnar structure, a cylindrical cavity is formed in the middle thereof, and the annular columnar structure is hollow, forming an inner cavity therein; The inner cavity serves as the air inlet end of the bubble regulating structure (23), is communicated with the gas generating device (7), is filled with microporous hydrophobic filler, and is communicated with the containing cavity through air holes evenly distributed in an array on the inner side wall of the annular cylindrical structure; The cavity connects the jet tube (231) with the jet tube (231) in the bubble regulating structure (23) of the next level or with the release tube (24).

3. A microbubble cleaning device according to claim 2, characterized in that: The jet tube (231) is a variable diameter structure with a diameter that decreases in sections from the front end to the rear end, and the diameter of the jet tube (231) in each level of the bubble adjustment structure (23) decreases step by step.

4. A microbubble cleaning device according to any one of claims 2 to 4, characterized in that: The micro-bubble regulating device (2) is further provided with a blade assembly (26); The blade group (26) is provided at least at any one of the inlet of the jet tube (231) and the inlet of the release tube (24) in each of the bubble adjustment structures (23); the blade group (26) comprises annular blades sequentially arranged along the axial direction of the jet tube (231) or the release tube (24).

5. A microbubble cleaning device according to any one of claim 5, characterized in that: At least two blade groups (26) are provided in the micro-bubble regulating device (2), and the angle between the annular blades in each blade group (26) and the corresponding jet tube (231) or the release tube (24) decreases gradually from the water inlet pipe (22) to the release tube (24).

6. A microbubble cleaning device according to any one of claim 2, characterized in that: The center of the bottom of the tank body (21) is concave upward to form an installation chamber separated from the interior of the tank body (21), and the water inlet pipe (22), the bubble adjustment structures (23) at each level, and the release pipe (24) are arranged from bottom to top in the installation chamber; The release pipe (24) is connected to the inside of the tank body (21) at the upper part of the tank body (21), and the tank body water outlet (25) is opened at the lower part of the tank body (21); inside the tank body (21), baffles (27) of various annular structures are arranged vertically around the circumference of the installation bin between the top of the installation bin and the tank body water outlet (25), and the baffles (27) are arranged downwardly and inclined from the center to the outside.

7. A microbubble cleaning device according to any one of claim 5, characterized in that: It also includes a control module and a water inlet flow meter, a gas-liquid mixing device pressure gauge, a bubble density detector, a tank pressure gauge and a gas regulating pressure gauge which are data-connected to the control module; the water inlet flow meter is connected between the gas-liquid water inlet (12) and a water source; the gas-liquid mixing device pressure gauge is used to measure the pressure at the gas-liquid outlet (16); and the bubble density detector is used to detect the bubble density in the cleaning tank (31); The tank pressure gauge is used to measure the internal pressure of the tank (21); the gas regulating pressure gauge is used to measure the gas supply pressure of the gas generating device (7); The control module is also in data communication with the water inlet regulating valve (13), the air inlet regulating valve (15), the gas-liquid-cleaning tank control valve (4), the gas-liquid-regulating device control valve (5) and the gas generating device (7).

8. A microbubble cleaning device according to claim 1, characterized in that: The inlet of the cleaning tank (3) is connected to a mixture release structure (31) with hole-shaped outlets arranged in an array, the mixture release structure (31) is located at the bottom of the cleaning tank (3), and each of the hole-shaped outlets faces upward.

9. The microbubble cleaning device according to claim 1, characterized in that: The gas-liquid mixing device (1) comprises a gas-liquid mixing pump (11), a water inlet flow regulating valve (13) and an air inlet regulating valve (15); The gas-liquid mixing pump (11) is provided with two inlets, namely a gas-liquid water inlet (12) and a gas-liquid air inlet (14), and one outlet, namely a gas-liquid outlet (16); the gas-liquid water inlet (12) is connected to the water source, and the water inlet flow regulating valve (13) is provided between the two; the gas-liquid air inlet (14) is connected to the air source, and the air inlet regulating valve (15) is provided between the two.

10. A microbubble cleaning method, using the microbubble cleaning device as claimed in claim 7 to clean an article, characterized in that: The process includes: The first step is to confirm that all valves are in a closed state, then start the gas-liquid mixing device (1), open the water inlet regulating valve (13), the air inlet regulating valve (15) and the gas-liquid-cleaning tank control valve (4); According to the type of items to be cleaned, the openings of the water inlet regulating valve (13) and the air inlet regulating valve (15) are adjusted so that the water source and the air source are respectively supplied from the air-liquid water inlet (12) and the air-liquid air inlet (14) at a preset initial water inlet flow rate. and the preset initial intake air flow Supplying water and gas to the gas-liquid mixing pump (11) to form a gas-liquid mixture enriched with microbubbles, which is then sent out from the gas-liquid outlet (16), flows through the gas-liquid-cleaning tank control valve (4) and enters the cleaning tank (3) to clean the articles; In the second step, the bubble density detector measures the real-time bubble density in the gas-liquid mixture in the cleaning tank (3). To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the intake flow rate of the current intake regulating valve (15) And the indication of the pressure gauge of the gas-liquid mixing device Make a judgment: like and , the opening of the intake regulating valve (15) is adjusted to increase the intake flow rate of the intake regulating valve (15). , then execute the second step again; like or , then execute the third step; in, Adjust the step size for the preset intake flow. is the maximum allowable air intake volume, is the maximum allowable pressure; The third step is to close the gas-liquid-cleaning tank control valve (4) and open the gas-liquid-regulating device control valve (5); Subsequently, the air intake control valve (6) corresponding to the first-stage air bubble adjustment structure (23) in the micro-bubble adjustment device (2) is opened, and the opening degree of the air intake control valve (6) is adjusted so that the gas generating device (7) is provided with a preset initial re-intake flow rate. supplying air to the first-stage bubble regulating structure (23); At this time, the gas-liquid mixture delivered by the gas-liquid outlet (16) flows through the gas-liquid regulating device control valve (5) and enters the micro-bubble regulating device (2) through the water inlet pipe (22), flows through each level of bubble regulating structure (23) in sequence, flows into the tank body (21) through the release pipe (24), and then flows out of the micro-bubble regulating device (2) through the tank body water outlet (25), and then enters the cleaning tank (3) through the inlet of the cleaning tank (3) to clean the article; Step 4: The bubble density detector measures the real-time bubble density in the gas-liquid mixture in the cleaning tank (3). To perform the test: like , the microbubble cleaning device is kept in working state to clean the items until the cleaning is completed; like , then the re-intake flow rate of the intake control valve (6) of the first-stage bubble adjustment structure (23) is Make a judgment: like , the opening of the intake regulating valve (15) is adjusted to increase the intake flow rate of the intake regulating valve (15). , then execute step 4 again; Otherwise, execute step 5; in, Adjust the step size for the preset re-intake air flow. is the maximum allowable re-intake volume; Step 5: If If the micro-bubble regulating device (2) has a next-stage bubble regulating structure (23), the air intake control valve (6) corresponding to the next-stage bubble regulating structure (23) is regulated and controlled according to the regulation method of the air intake control valve (6) of the first-stage bubble regulating structure (23) in the third and fourth steps; like If the micro-bubble regulating device (2) has no next-stage bubble regulating structure (23), the re-intake flow rate of the intake control valve (6) of the first-stage bubble regulating structure (23) is set to Adjust to maximum value , clean the items until the cleaning is completed.

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