An immersed high-frequency micro-pressure cleaning device and an immersed high-frequency micro-pressure cleaning process

Abstract

The embodiment of the application discloses an immersed high-frequency micro-pressure cleaning device and an immersed high-frequency micro-pressure cleaning process, wherein the immersed high-frequency micro-pressure cleaning device comprises a soaking cleaning pool, an outer surface bubble brushing device, an inner surface bubble brushing device and an air compressor; the exhaust pipe and the first air pipe are communicated through a three-way pipe in the outer surface bubble brushing device, and a plurality of exhaust holes are arranged in the three-way pipe; the second air pipe and the connecting hose are communicated in the inner surface bubble brushing device, the end of the connecting hose away from the second air pipe is connected with a microporous bubble generator; the first air pipe and the second air pipe are connected to the air compressor, when the air compressor generates compressed air, the compressed air is used for bubble brushing through the exhaust holes; the microporous bubble generator is driven by the compressed air to flush forward in the product, and the energy-saving and efficient operation of the heating / cooling system and the filtering system can be ensured, the service life of the coil system and the membrane filtering system is prolonged, and the use and maintenance cost of the user equipment is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of glass substrate production process, in particular to an immersion type high-frequency micro-pressure cleaning device and an immersion type high-frequency micro-pressure cleaning process. BACKGROUND

[0002] With the development of modern glass display substrate industry, power heating system and cooling system are becoming more and more common and important in the application of glass display substrate manufacturing, which plays a great role in the manufacturing and quality improvement of glass substrate. Therefore, the extension of the service life of the boiler system and the air conditioning system is particularly important in reducing production and operation costs. In order to achieve better heating / cooling performance, a large number of various types of coils (copper coils, stainless steel coils, etc.) are used in these heating / cooling systems. These heating / cooling coils use water / pure water / liquid containing chemical agents in the running process. After a long time of running in the pipeline, the inside and outside walls of the pipeline are often scaled, which affects the heat conduction performance of the coil. The various chemical substances contained in the scale also cause corrosion to the coil, thereby affecting the service life of the coil.

[0003] Similarly, various water treatment membrane filtration systems such as reverse osmosis membranes, ultrafiltration membranes (tubular ultrafiltration membranes, flat plate ultrafiltration membranes, and cord ultrafiltration membranes) and various filtration membranes for various liquids will be blocked by scale and other pollutants attached to the membrane surface after a long time of running. The surface scale of the coil and the filter membrane needs to be treated in time, otherwise it will not only directly affect the operation of the equipment, but also affect the heat conduction of the coil, increase the energy consumption of the heating / cooling system, shorten the service life of the coil, and even cause the coil to rupture and cause equipment operation accidents. If the scale on the surface of the filter membrane is not treated in time, it will directly reduce the filtration flux, and in severe cases, it will damage the filter membrane and reduce the filtration effect. SUMMARY

[0004] In order to solve the cleaning of the inner and outer tube wall / surface fouling in the coil system and membrane filtration system, ensure the energy saving and efficient operation of the heating / cooling system and filtration system, prolong the service life of the coil system and membrane filtration system, and reduce the use and maintenance cost of the user equipment, the application provides an immersed high-frequency micro-pressure cleaning device and an immersed high-frequency micro-pressure cleaning process.

[0005] The technical scheme adopted by the application to solve the above technical problems is as follows:

[0006] The application provides an immersed high-frequency micro-pressure cleaning device for a glass substrate production line, which comprises a soaking cleaning pool, an outer surface bubble brushing device, an inner surface bubble brushing device and an air compressor.

[0007] The outer surface bubble brushing device comprises a first air pipe and an exhaust pipe, the exhaust pipe is communicated with the first air pipe through a tee joint, the exhaust pipe is arranged at the bottom position in the soaking cleaning pool, and a plurality of exhaust holes are formed in the exhaust pipe.

[0008] The inner surface bubble brushing device comprises a second air pipe and a connecting hose, the second air pipe is communicated with the connecting hose, and a microporous bubble generator is connected to the end of the connecting hose away from the second air pipe.

[0009] The first air pipe and the second air pipe are connected to the air compressor, when the air compressor generates compressed air, the compressed air enters the exhaust pipe through the first air pipe, and bubble brushing is performed through the exhaust holes.

[0010] When the compressed air enters the connecting hose and the microporous bubble generator through the second air pipe, the compressed air drives the microporous bubble generator to flush forward in the product.

[0011] Optionally, in some embodiments of the application, in the outer surface bubble brushing device, the exhaust holes are uniformly arranged on the exhaust pipe, and the distance between adjacent exhaust holes is 10mm, and the aperture of the exhaust hole is 2mm.

[0012] Optionally, in some embodiments of the application, a cleaning agent is further included, the cleaning agent is provided with a biological enzyme solution, and the pH value of the biological enzyme solution ranges from 7.1 to 7.5.

[0013] The biological enzyme solution is located in the soaking cleaning pool.

[0014] Optionally, in some embodiments of the application, a detection mechanism is further included, the detection mechanism comprises a pressure detection system, a visual detection system and a pH detection system.

[0015] Optionally, in some embodiments of the present application, the pressure detection system detects the air pressure of the air compressor; the visual detection system includes an endoscope for visual image capture inspection of the inside of the product.

[0016] The PH detection system detects the PH value of the liquid inside the soaking cleaning tank.

[0017] Optionally, the present application further provides an immersion type high frequency micro-pressure cleaning process, which is carried out by the above immersion type high frequency micro-pressure cleaning device, and includes the following steps.

[0018] S1, disassembling the product, removing impurities, and preliminarily inspecting the product, wherein the product includes a coil system and a membrane filtration system;

[0019] S2, pressure testing the inspected product, checking whether the product is complete under the rated pressure, and determining whether the product is qualified or unqualified;

[0020] S3, putting the qualified product in the pressure testing into a soaking cleaning tank, adding cleaning agents in the soaking cleaning tank, and cleaning the product by an external surface bubble brushing device and an internal surface bubble brushing device;

[0021] S4, inspecting the cleaned product to determine whether it is clean;

[0022] S5, second pressure testing the cleaned product and taking a photo for archiving;

[0023] S6, performing an oxidation resistance treatment on the product and performing assembly testing, debugging, and trial operation.

[0024] Optionally, in some embodiments of the present application, in the S1, the preliminary inspection includes visual inspection, and when the product is damaged in the visual inspection, the product is marked for processing.

[0025] Optionally, in some embodiments of the present application, in the S2, when the product does not deform and leak under the rated pressure, the product is determined to be a qualified product; when the product deforms and leaks under the rated pressure, the product is determined to be an unqualified product, and the damaged position is marked for scrapping or repairing.

[0026] Optionally, in some embodiments of the present application, in the S4, the inspection includes removing the cleaning agents on the surface of the product, and inspecting the inside of the product by an endoscope to determine whether there are attachments; when there are no attachments, the product is washed by clean water and enters the next step; when there are attachments, the product returns to the previous step for further cleaning until the attachments fall off from the product.

[0027] Optionally, in some embodiments of the present application, in the S5, the secondary pressure test comprises presetting a pressure on the product, and the preset pressure is greater than or equal to 15% of the design pressure of the product.

[0028] Compared with the prior art, the beneficial effects in the present application are:

[0029] 1. The use of environmentally friendly enzymes for scale removal and cleaning of coil assemblies and membrane assemblies can avoid the corrosion of conventional acid reagent scale removal on the surface of the coil and membrane assemblies.

[0030] 2. The environmentally friendly enzyme is made from natural plant materials and has little pollution to the environment after use, and can be directly discharged or used for greening irrigation. Unlike conventional hydrochloric acid cleaning agent waste liquid, it does not need harmless environmental protection treatment.

[0031] 3. The inner and outer surface bubble cleaning device designed according to the coil and membrane assembly can simultaneously perform high-frequency micro-pressure cleaning on the outside and inside of the coil and membrane assembly, and will not cause damage to the surface of the coil and membrane assembly similar to high-pressure water gun flushing and manual cleaning.

[0032] 4. The use of the inner and outer surface bubble cleaning device for simultaneous high-frequency micro-pressure cleaning on the outside and inside of the coil and membrane assembly is more efficient and thorough in scale removal.

[0033] 5. The detection and inspection method using two air pressure detections and endoscopy detection can detect damaged components that cannot be visually detected before cleaning, thereby avoiding the occupation of cleaning resources and the waste of labor and materials. Endoscopy detection can take photos of the inside of the component after cleaning, so that the inspection results can be checked. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 A high-frequency micro-pressure cleaning process flow diagram is provided for the embodiments of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present application. It can be understood that the drawings are provided only for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for clear description, and does not limit the connection mode.

[0037] Specifically, as shown in the drawings, Figure 1 The cleaning device provided in the embodiments of the present application mainly cleans the coil system and the membrane filtration system in the glass substrate production process, so as to facilitate the glass substrate processing of the coil system and the membrane filtration system.

[0038] Specifically,

[0039] The cleaning device comprises a soaking cleaning pool, an outer surface bubble brushing device, an inner surface bubble brushing device and an air compressor. The outer surface bubble brushing device and the inner surface bubble brushing device are arranged in the soaking cleaning pool. The outer surface bubble brushing device comprises a first air pipe and a plurality of exhaust pipes. The plurality of exhaust pipes are connected with the first air pipe through a tee joint. The air in the first air pipe enters the plurality of exhaust pipes through the tee joint. In the embodiments of the present application, the plurality of exhaust pipes are uniformly distributed at the bottom of the soaking cleaning pool. A plurality of exhaust holes are uniformly arranged on the exhaust pipe. The interval of the exhaust holes on the exhaust pipe is 10 mm, and the diameter of the exhaust hole is 2 mm. The gas generated by the air compressor can be uniformly discharged at the bottom of the soaking cleaning pool. The air compressor is connected with the first air pipe.

[0040] In the outer surface bubble brushing device, the exhaust pipe is arranged through the bottom gear of the soaking cleaning pool. After being manufactured, the device is laid on the four edges of the pool bottom and is attached to the four edges of the pool bottom.

[0041] In order to prevent the outer surface bubble brushing device from floating after being aerated in the soaking cleaning pool, the outer surface bubble brushing device needs to be fixed at the bottom of the soaking cleaning pool.

[0042] The inner surface bubble brushing device comprises a second air pipe, a connecting hose and a microporous bubble generator. An air compressor is connected to the second air pipe. A plurality of connecting hoses are connected to the second air pipe through branch joints. The other ends of the connecting hoses are connected to the microporous bubble generator. The microporous bubble generator has a cylindrical structure and is provided with a plurality of micropores. The micropores are connected to the connecting hoses and the second air pipe. Air generated by the air compressor enters the microporous bubble generator through the second air pipe and the connecting hoses, and is sprayed through the micropores.

[0043] The inner surface bubble brushing device is used to clean the inside of the coil system and the membrane filtration system. When the bubbles are sprayed out of the microporous bubble generator, the microporous bubble generator moves. At the same time, the airflow drives the cleaning liquid behind to move forward and circulate, thereby strengthening the contact between the cleaning liquid and the surface of the coil (membrane assembly), the micro-pressure brushing, and promoting the decomposition and falling of the surface dirt.

[0044] In the above process, in order to more efficiently clean the coil system and the membrane filtration system, the air compressor adjusts the air volume through the compressed air pipe to adjust the bubble generation and movement frequency, the bubble and coil or membrane assembly rubbing pressure, and the descaling efficiency of the medicament on the coil or membrane assembly to accelerate the decomposition and falling of the dirt.

[0045] In the cleaning process, cleaning agents are added to the soaking cleaning tank. The cleaning agents mainly include a biological enzyme solution. The pH value of the biological enzyme solution is in the range of 7.1-7.5.

[0046] The biological enzyme is made of natural plant materials and can be purchased as a finished product or can be made by self-fabrication using discarded plant waste such as melon peel and leaf. The natural plant enzyme has a certain acidic pH value (the conventional pH is 4.5-5.5) and needs to be diluted when used. The natural enzyme does not contain toxic and harmful chemical substances. The waste cleaning liquid after cleaning the coil and membrane assembly only needs to filter out the solid substances such as metal particles precipitated in the cleaning liquid and can be directly discharged, without any pollution to the environment. Even the enzyme cleaning liquid after use can be directly used for greening irrigation. The unique components of the enzyme are more conducive to plant growth and disease prevention.

[0047] Based on the above device, the coil system and the membrane filtration system can be cleaned as a whole. The cleaning process mainly includes the following steps:

[0048] S1, disassemble the product, remove impurities, and preliminarily inspect the product, wherein the product includes a coil system and a membrane filtration system.

[0049] S2, pressure test the checked product, check whether the product is complete under the rated pressure, and make a pass or fail determination on the product;

[0050] S3, put the product that passes the pressure test into the soaking cleaning tank, add cleaning agent in the soaking cleaning tank, and clean the product by the external surface bubble brushing device and the internal surface bubble brushing device;

[0051] S4, check the cleaned product to determine whether it is clean;

[0052] S5, second pressure test the cleaned product and take a photo for archiving;

[0053] S6, perform an oxidation resistance treatment on the product and perform assembly test, debugging and trial operation.

[0054] In the above steps, specifically:

[0055] In S1, the coil system and the membrane filtration system are disassembled as a whole, specifically:

[0056] The coil system mainly includes a large number of various pipes, which mainly function as a transport medium for refrigerant in the refrigeration and heating system during the glass substrate manufacturing process. These heating / cooling coils use water / pure water / liquid containing chemical agents during operation. After a long time of operation, the liquid in the pipe often causes scale to form on the inner and outer walls of the pipe, thereby affecting the heat conduction performance of the coil. The various chemical substances contained in the scale also cause corrosion to the coil, thereby affecting the service life of the coil.

[0057] The membrane system mainly includes various membranes, specifically reverse osmosis membranes, ultrafiltration membranes (tubular ultrafiltration membranes, flat plate ultrafiltration membranes, and cord ultrafiltration membranes), and various filtration membranes for filtering water and various liquids. After a long time of operation, the membrane surface is often blocked by scale and other contaminants in the filtered liquid that adhere to the membrane surface, thereby affecting the filtration gap.

[0058] For the above-mentioned coil system and membrane system, they will be disassembled, specifically:

[0059] 1. The disassembled coil and membrane assemblies are numbered using tags (waterproof tags or metal laser tags) according to the disassembly order, which facilitates installation in order after cleaning, and can effectively improve the matching of installation and reduce the possibility of water leakage at the connection site;

[0060] 2. Remove the old sealing ring at the connection site, and temporarily seal the system main pipe opening to prevent foreign matter from entering;

[0061] 3. Remove the superficial deposits on the coil (membrane module), remove the easily cleaned deposits on the surface, which can reduce the entry of superficial deposits into the cleaning process, reduce the pressure on the cleaning solution, improve the cleanliness of the cleaning solution, and prolong the service life of the cleaning solution;

[0062] 4. Visual inspection of the coil (membrane module), if damaged, mark and report for disposal, and store separately.

[0063] After disassembly and processing, enter the S2 stage, which tests the pressure of the disassembled coil and membrane system components. The test mainly tests the rated pressure of the product. During the test, a detection mechanism is provided, which specifically includes a pressure detection system, and a press is provided in the pressure detection system. The press is pre-set with a rated pressure. When the press extrudes the pipe wall through the pre-set pressure, it is determined whether the pipe wall is damaged, deformed, and leaked. When the pipe wall does not appear obvious damage, deformation, and leakage, it is determined that the pipe wall is a qualified product; when the pipe wall appears obvious damage, deformation, and leakage, it is determined that the pipe wall is an unqualified product.

[0064] When the pipe wall is a qualified product, enter the S3 stage, which needs to put the coil and membrane system components into the soaking cleaning pool for cleaning. High-pressure air is pumped into the first air pipe and the second air pipe through the air compressor. The first air pipe discharges air into the biological enzyme solution through the exhaust hole on the exhaust pipe, and cleans the outer surface of the coil and membrane system components.

[0065] The second air pipe enters the micro-porous bubble generator through the connecting hose. The air is sprayed through the micro-porous hole of the micro-porous bubble generator, which drives the micro-porous bubble generator to move, facilitating the flushing of the inner wall of the coil and the flushing of the membrane system components.

[0066] The above process is as follows: according to the scaling condition of the coil, membrane surface and inside, the inner circulating cleaning liquid + bubbles in the cleaning pool are used to immerse and brush the coil and membrane components. Compressed air passes through the bubble generating device to form a large number of small particle bubbles, which continuously brush the surface of the coil and membrane components at high frequency. The contact of bubbles with the surface can promote the penetration of cleaning solution to the surface dirt. The micro-pressure impact force formed by the bubble burst can form local pressure on the surface dirt from different directions to accelerate the falling of the dirt.

[0067] During the soaking and brushing process, due to the continuous action of oxygen in the air and the enzyme, the enzyme activity in the enzyme solution will decrease, the PH value will rise to neutral, which will reduce the cleaning ability of the cleaning solution and directly affect the cleaning effect and efficiency. The PH value should be detected by test paper at any time according to the solution soaking time and cleaning amount, and the cleaning solution should be replaced in time.

[0068] The detection of the PH is processed by a PH detection system in the detection mechanism, which includes PH test paper or a PH meter. The solution can be replaced in time by detecting the PH value in the biological enzyme solution.

[0069] Meanwhile, a pressure detection system is also arranged in the detection system, which includes a pressure detection machine. The pressure detection machine detects the air pressure in the compressed air to control the cleaning efficiency.

[0070] After the cleaning is completed, the process enters the S4 stage, in which the cleaned coil and membrane system assembly need to be inspected. The inspection process includes removing the cleaning agent on the surface of the product and checking the inside of the product through an endoscope. When there is no attachment, the product is washed with clean water and enters the next link; when there is attachment, the product returns to the previous link for continuous cleaning until the attachment falls off the product.

[0071] After the above inspection is completed, the process enters the S5 stage for secondary pressure testing. The secondary pressure testing will detect the coil and membrane system assembly again, specifically:

[0072] In the secondary pressure testing, a pressure detection machine is arranged for detection, and a set test pressure is arranged. The size of the set test pressure is greater than or equal to 15% of the size of the design pressure of the product. At the same time, an ultra-long detection distance high-definition endoscope is used to fully detect the inside of the coil and take photos of multiple different parts for archiving and user on-site quality acceptance.

[0073] The detection process is mainly to prevent dirt from adhering to the surface of the damaged part of the coil when it is not cleaned. In the case of damage but no abnormality in pressure testing.

[0074] After the secondary detection process is completed, the surface of the coil and membrane system assembly is subjected to an anti-oxidation treatment to prevent the coil and membrane assembly from being exposed to air and oxidized after being stacked after cleaning. At the same time, special water treatment membrane materials such as ultrafiltration, MBR membrane group and other PTFE hydrophilic membrane groups need to be soaked in pure water to prevent water loss and dry aging failure.

[0075] After the above treatment, the coil and membrane system assembly are subjected to assembly testing, specifically:

[0076] 1. Install the cleaned coil and membrane assembly to the original position of the equipment

[0077] The residual sealing ring of the original joint at both ends needs to be thoroughly cleaned. The joint part can be lightly polished to make the surface smooth, and all sealing rings are replaced with new ones.

[0078] The joint between the coil (membrane assembly) and the equipment should not be tightened too tightly at one time to prevent damage due to excessive force.

[0079] 2. Low pressure test run leak detection

[0080] After the installation of the coil (membrane assembly) is completed, the equipment is started, the running pressure is adjusted, the water leakage of each connection part is detected, the slow tightening of the water leakage part is performed, and the tightening is performed until no leakage occurs.

[0081] 3. Stepwise pressure test run

[0082] After the solution of the leakage points of each connection part, the equipment is gradually pressurized and run, the pressure increase is not too large, the running of each department is checked after each pressurization to ensure that the newly added leakage points are tightened again until no leakage occurs.

[0083] 4. 24 hours of continuous running at rated pressure

[0084] After the stepwise pressurization and inspection are qualified, the equipment is adjusted to the rated pressure (power) for 24 hours of continuous running, and the running conditions at each time point are recorded. After the inspection is qualified, the filling material and cover of the equipment are all restored to the original state. The equipment enters a normal running state.

[0085] The above examples are only used to illustrate the technical method of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical method of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the present application.

Claims

1. An immersion high frequency micro-pressure cleaning device for use in a glass substrate production line, characterized in that, The device comprises a soaking cleaning tank, an outer surface bubble cleaning device, an inner surface bubble cleaning device and an air compressor. The outer surface bubble cleaning device comprises a first air pipe and an exhaust pipe, the exhaust pipe is communicated with the first air pipe through a tee joint, and the exhaust pipe is arranged at the bottom of the soaking cleaning tank. The inner surface bubble cleaning device comprises a second air pipe and a connecting hose, the second air pipe is communicated with the connecting hose, and the connecting hose is connected with a microporous bubble generator at the end away from the second air pipe. The first air pipe and the second air pipe are connected with the air compressor, when the air compressor generates compressed air, the compressed air enters the exhaust pipe through the first air pipe, and bubble cleaning is carried out through the exhaust holes. When the compressed air enters the connecting hose and the microporous bubble generator through the second air pipe, the compressed air drives the microporous bubble generator to flush forward in the product. The detection mechanism comprises a pressure detection system, a visual detection system and a pH detection system. The pressure detection system detects the air pressure of the air compressor, the visual detection system comprises an endoscope for visual image capture inspection of the product, and the pH detection system detects the pH value of the liquid in the soaking cleaning tank. In the outer surface bubble cleaning device, the exhaust holes are uniformly arranged on the exhaust pipe, and the distance between adjacent exhaust holes is 10 mm, and the diameter of the exhaust holes is 2 mm.

2. The high frequency micro-pressure cleaning device according to claim 1, wherein, The cleaning agent comprises a biological enzyme solution, the pH value of the biological enzyme solution is 7.1-7.5, and the biological enzyme solution is located in the soaking cleaning tank.

3. The high frequency micro-impingement cleaning device according to claim 1, wherein, The device comprises the following steps: S1, disassembling, removing impurities and preliminary inspection of the product, wherein the product comprises a coil system and a membrane filtration system; 4. A process for cleaning by immersion in a high frequency micro-pressure cleaning device according to any one of claims 1 to 3, characterized in that S2, pressure test of the inspected product, whether the product is complete under rated pressure is checked, and the product is determined to be qualified or unqualified; S3, the qualified product in the pressure test is put into the soaking cleaning tank, cleaning agent is added in the soaking cleaning tank, and the product is cleaned by the outer surface bubble cleaning device and the inner surface bubble cleaning device; S4, the cleaned product is inspected to determine whether it is clean; S5, the cleaned product is subjected to secondary pressure test and photo archiving treatment; S6, the product is subjected to antioxidant treatment and assembly test, debugging and trial operation. In S1, the preliminary inspection comprises visual inspection, and when the product is damaged, the product is marked for processing. In S2, when the product does not deform and leak under rated pressure, it is determined to be a qualified product; when the product deforms and leaks under rated pressure, it is determined to be an unqualified product, and the damaged position is marked for scrap or repair.

5. The process of claim 4, wherein the process is a high frequency micro- pressure cleaning process. ​ 6. The process as claimed in claim 4, wherein, ​ 7. The process of claim 4, wherein the process is a high frequency micro- pressure cleaning process. In the S4, the checking includes removing the cleaning agent on the product surface, and checking the product interior through the endoscope, checking whether there is an attachment, when there is no attachment, washing with clean water to enter the next link; when there is an attachment, returning to the previous link to continue cleaning until the attachment falls off from the product.

8. The process as claimed in claim 4, wherein, In the S5, the secondary pressure test includes presetting a pressure on the product, and the preset pressure is greater than or equal to 15% of the design pressure of the product.

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