A non-discharge cleaning device based on an automatic cleaning filter machine

Abstract

The utility model discloses a kind of no pollution cleaning device based on automatic cleaning filter, including filter unit component, for filtering the impurity-containing electroplating solution generated when electroplating tank electroplating;Circulation pipeline is used to deliver the impurity-containing electroplating solution generated by electroplating tank to filter unit component, and the electroplating solution removed impurity after filter unit component is delivered back to electroplating tank;Cleaning component is used to deliver cleaning high-pressure air and cleaning liquor to filter unit component, and recycling cleaning liquor after cleaning filter unit component.This application realizes electroplating solution circulation filtration by circulation pipeline, realizes closed-loop recycling of cleaning liquor using cleaning component, realizes filter material automatic cleaning under the drive of rotary motor combined with high-pressure gas and cleaning liquor, effectively avoid the direct discharge of heavy metal-containing wastewater, with the advantages of realizing cleaning liquor recycling, avoiding heavy metal-containing wastewater discharge, reducing environmental governance cost.

Description

Technical Field

[0001] This utility model relates to the field of automatic cleaning filter machines, and in particular to a non-sewage cleaning device based on an automatic cleaning filter machine. Background Technology

[0002] Industrial automated cleaning filters play a crucial role in electroplating processes, maintaining the cleanliness of the electroplating solution through a circulating filtration system. Traditional electroplating solution filtration systems commonly generate large amounts of wastewater containing heavy metals during the cleaning process. This wastewater contains undecomposed grease contaminants, metal particles, and strong acid and alkali cleaning agents, causing not only serious environmental pollution but also a huge waste of water resources and chemical agents.

[0003] Current technologies primarily employ an open-loop cleaning model, directly discharging wastewater into the wastewater treatment system. This approach increases environmental costs for businesses and fails to achieve resource recycling. Particularly in high-precision electroplating, the frequent need for filter media cleaning clashes sharply with stringent environmental requirements, making it difficult for conventional backwashing techniques to balance filtration effectiveness and environmental performance. More critically, existing systems lack a closed-loop recovery mechanism for the cleaning media, resulting in the consumption of large amounts of fresh cleaning solutions and the generation of wastewater with each cleaning cycle. This technological deficiency severely hinders the electroplating industry's transition to green manufacturing.

[0004] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a non-sewage cleaning device based on an automatic cleaning filter to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A non-sewage cleaning device based on an automatic cleaning filter includes...

[0008] Filter assembly, used to filter electroplating solutions containing impurities generated during electroplating in an electroplating tank;

[0009] The circulation pipeline is used to transport the electroplating solution containing impurities from the electroplating tank to the filter assembly, and to transport the electroplating solution after the impurities have been removed by the filter assembly back to the electroplating tank.

[0010] The cleaning unit is used to supply high-pressure air and cleaning solution for cleaning the filter assembly and to recover the cleaning solution after cleaning the filter assembly.

[0011] Furthermore, the filter assembly includes a filter barrel, with an upper cover plate and a lower cover plate respectively provided at the top and bottom of the filter barrel;

[0012] A rotary motor is provided at the bottom of the lower cover plate. The output shaft of the rotary motor passes through the lower cover plate and is connected to a rotating bracket installed inside the filter barrel. Cleaning brushes are provided on the inner and outer sides of the rotating bracket. A first filter assembly is provided on the outer side of the cleaning brushes. The first filter assembly includes a first filter material frame fixed on the lower cover plate and a first filter material installed on the first filter material frame.

[0013] The bottom of the top cover is equipped with a first filter assembly, and the second filter assembly extends into the interior of the filter barrel and is located inside the cleaning brush. The second filter assembly includes a second filter material frame fixedly connected to the top cover and a second filter material disposed on the second filter material frame.

[0014] Furthermore, the filter barrel is provided with an axially penetrating main filter channel inside, and an auxiliary filter channel is provided between the first filter assembly and the inner wall of the filter barrel.

[0015] The lower cover plate is provided with an inlet and a drain port that are connected to the main filter channel and the auxiliary filter channel, and the upper cover plate is provided with an outlet that is connected to the main filter channel and the auxiliary filter channel.

[0016] Furthermore, the circulation pipeline includes an inlet pipeline for connecting the inlet of the electroplating tank and the filter assembly, and an outlet pipeline for connecting the outlet of the filter assembly and the electroplating tank. An inlet valve is provided on the inlet pipeline, and an outlet valve is provided on the outlet pipeline.

[0017] Furthermore, the cleaning assembly includes a gas pipeline for introducing high-pressure gas and a dosing tank for storing cleaning chemicals.

[0018] One end of the gas pipeline is used to connect to a high-pressure gas source, and an inlet valve is provided on the gas pipeline. The other end of the gas pipeline is connected to an outlet pipe.

[0019] The outlet end of the dosing tank is connected to the inlet pipeline via a dosing pipeline, and a dosing valve is provided on the dosing pipeline. The inlet end of the dosing tank is connected to the drain outlet via a return pipeline, and a drain valve and a slag removal bucket are provided on the return pipeline.

[0020] In summary, this utility model has the following beneficial effects:

[0021] In existing technologies, industrial automated cleaning filters commonly suffer from high-pollution wastewater discharge during electroplating solution treatment. Traditional cleaning processes employ a fixed water volume rinsing mode, resulting in the generation of large amounts of wastewater containing heavy metal particles and chemical agents. Electroplating workshops generally face the dilemma of high investment and operating costs for wastewater treatment facilities, especially in precision electroplating operations, where the frequent need for filter media cleaning creates a sharp contradiction with wastewater discharge restrictions.

[0022] To address the aforementioned issues, researchers observed a deficiency in existing cleaning systems: the unidirectional consumption of cleaning solutions. Analysis of the electroplating solution treatment process revealed that conventional backwashing was insufficient to completely remove adhesive impurities when filter media became clogged, forcing operators to increase the rinsing frequency. This led to the idea of ​​recycling the cleaning medium, attempting to construct a closed-loop cleaning system. Further research revealed that simple liquid rinsing lacked sufficient kinetic energy, necessitating the introduction of an auxiliary cleaning medium. After multiple experimental verifications, it was found that gas-liquid two-phase flow cleaning significantly improved filter media regeneration efficiency, and establishing a chemical recovery channel enabled resource closure.

[0023] This application achieves electroplating solution circulation filtration through a circulation pipeline, realizes closed-loop recycling of cleaning chemicals through a cleaning component, and achieves automatic cleaning of filter media by combining high-pressure gas and cleaning chemicals under the drive of a rotary motor. This effectively avoids the direct discharge of wastewater containing heavy metals and has the advantages of realizing the recycling of cleaning chemicals, avoiding the discharge of wastewater containing heavy metals, and reducing environmental protection costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the non-sewage cleaning device based on an automatic cleaning filter according to the present invention.

[0025] Figure 2 This is a schematic diagram of the automatic cleaning filter machine described in this utility model. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0027] like Figure 1 and Figure 2 As shown, the present invention proposes a non-sewage cleaning device based on an automatic cleaning filter, including a filter assembly 1, a circulation pipeline 2, and a cleaning assembly 4. The filter assembly 1 is used to filter the electroplating solution containing impurities generated by the electroplating tank 3; the circulation pipeline 2 is used to transport the electroplating solution containing impurities to the filter assembly 1 and return the filtered liquid to the electroplating tank 3; the cleaning assembly 4 transports high-pressure air and cleaning solution and recycles the used solution.

[0028] The filter assembly 1 is the core device for solid-liquid separation, with filter layers on its inner and outer sides capable of intercepting metal particles of different sizes. The circulation pipeline 2 is the transport channel connecting the electroplating tank 3 and the filter device; it can be implemented using corrosion-resistant pipes and control valves to form a closed-loop flow path for the electroplating solution. The cleaning assembly 4 is the subsystem providing cleaning energy and media; it can be implemented using a gas-liquid mixing jet device and a chemical storage tank.

[0029] Specifically, the electroplating solution containing metallic impurities in electroplating tank 3 is pumped to filter assembly 1. After being intercepted by multiple layers of filter media, the clean liquid is returned to the production system. When the accumulation of impurities on the filter media surface reaches a threshold, circulation pipeline 2 switches to cleaning mode. High-pressure air and cleaning chemicals work together on the filter media surface, and the detached impurities enter the recovery channel with the waste liquid. The cleaning waste liquid is then returned to the storage tank after slag removal treatment, achieving the reuse of the chemicals. Throughout the entire process, the electroplating solution and cleaning medium are in a closed-loop circulation state, with no external wastewater discharge.

[0030] Compared to existing technologies, traditional cleaning systems employ an open drainage design, generating a fixed amount of contaminated wastewater per cleaning cycle. This solution, by constructing a gas-liquid two-phase cleaning system, reduces chemical consumption while achieving the same cleaning effect.

[0031] Through the above technical solution, this application effectively blocks the leakage path of pollutants during the electroplating solution treatment process, and all waste liquid containing impurities generated during the cleaning operation is reused after treatment. The electroplating workshop does not need to be equipped with large-scale wastewater treatment facilities, and the amount of cleaning solution replenished is reduced.

[0032] Example 1

[0033] The further filtration assembly 1 of this application includes a filter barrel 101, with an upper cover plate 102 and a lower cover plate 103 at the top and bottom of the filter barrel 101, respectively. A rotary motor 104 is provided at the bottom of the lower cover plate 103, and the output shaft of the rotary motor 104 passes through the lower cover plate 103 and is connected to a rotating bracket 105 disposed inside the filter barrel 101. Cleaning brushes 106 are provided on the inner and outer sides of the rotating bracket 105, respectively. A first filter assembly is provided on the outer side of the cleaning brushes 106. The first filter assembly includes a first filter material frame 107 fixed on the lower cover plate 103 and a first filter material 108 disposed on the first filter material frame 107. The first filter assembly is installed at the bottom of the upper cover plate 102. A second filter assembly extends into the interior of the filter barrel 101 and is located inside the cleaning brushes 106. The second filter assembly includes a second filter material frame 109 fixedly connected to the upper cover plate 102 and a second filter material disposed on the second filter material frame 109.

[0034] The filter canister 101 is a sealed container for housing the filter assembly, which can be a stainless steel cylindrical structure, with its upper and lower ends sealed by cover plates to form a closed cavity. The rotary motor 104 is the power source driving the cleaning mechanism, which can be a servo motor with a reducer, with its output shaft passing through the lower cover plate 103 via a mechanical seal. The rotating bracket 105 is the rotating frame supporting the cleaning brush 106, which can be a metal bracket rigidly connected to the motor shaft. The cleaning brush 106 is a physical cleaning tool for removing impurities from the filter media surface, which can be a combination of nylon bristles and a stainless steel base. The first filter media skeleton 107 is the fixed frame supporting the outer filter media, and the second filter media skeleton 109 is the suspension frame supporting the inner filter media.

[0035] Specifically, the filter canister 101 has a double-layer filtration space, with the outer first filter component and the inner second filter component forming a filter layer. When liquid containing impurities enters the filter canister 101, the impurities are trapped by the first filter media 108 and the second filter media 110. During cleaning, when the rotary motor 104 drives the rotating bracket 105 to rotate, the inner and outer cleaning brushes 106 mechanically scrape the surfaces of the two filter media. The outer cleaning brush 106 moves circumferentially along the outer surface of the first filter media 108 to remove solid impurities deposited in the pores of the filter media; the inner cleaning brush 106 forms a reverse flush on the inner surface of the second filter media 110 to remove colloidal contaminants attached to the filter media fibers.

[0036] This solution utilizes a rotating dual-cleaning brush 106 in conjunction with dual-layer filter media to complete online cleaning while maintaining continuous equipment operation. Existing technologies often employ a single-direction backwash water flow, which can easily cause localized clogging of the filter media. This solution, however, combines bidirectional rotating brushing with air scouring to create a multi-directional cleaning force field. Traditional filter media support frames are typically integral, requiring the entire filter unit to be removed for replacement. This solution's modular filter media frame design allows for the individual replacement of any single layer of filter media.

[0037] Through the above technical solutions, this application achieves online self-cleaning of the filter components, effectively reducing downtime for maintenance. The dual-layer filtration structure extends the service life of the filter media and reduces the frequency of replacement. The coordinated design of the rotary cleaning mechanism and the fixed filter media frame avoids water waste caused by traditional backwashing. The bidirectional cleaning action ensures deep cleaning of the filter media pores and maintains a stable filtration flux. The split-type filter media support structure simplifies the equipment maintenance process and improves operational convenience.

[0038] Example 2

[0039] This application further proposes that the filter barrel 101 has an axially penetrating main filter channel 111 inside, an auxiliary filter channel 112 is provided between the first filter assembly and the inner wall of the filter barrel 101, the lower cover plate 103 is provided with an inlet 113 and a drain 114 communicating with the main filter channel 111 and the auxiliary filter channel 112, and the upper cover plate 102 is provided with an outlet 115 communicating with the main filter channel 111 and the auxiliary filter channel 112.

[0040] The main filtration channel 111 is the core liquid channel that runs axially through the filter barrel 101, and the first filter assembly is arranged inside it to intercept particulate impurities. The auxiliary filtration channel 112 is an annular gap channel formed around the main filtration channel 111, and the inner wall of this space forms an auxiliary filtration area between the inner wall of the filter barrel 101 and the inner wall of the filter barrel 101. The inlet 113 is a bidirectional fluid interface provided on the lower cover plate 103, which can be implemented by a flange interface with a flow splitting structure, allowing both the introduction of the liquid to be filtered and the injection of cleaning chemicals. The drain port 114 is a slag discharge channel provided at the bottom of the lower cover plate 103, which can be implemented by installing a funnel structure with a screen, used to discharge the mixture of waste liquid and impurities generated during cleaning. The outlet 115 is a multi-functional interface provided at the top of the upper cover plate 102, which serves as both an outlet for the filtered liquid and can be switched to a high-pressure gas inlet.

[0041] Specifically, after the liquid containing impurities enters the filter tank 101 through the inlet 113, most of it is filtered along the main filter channel 111, with large particles of impurities being trapped by the first filter element. A portion of the liquid enters the auxiliary filter channel 112 through the gap between the first filter element and the tank wall, where it is filtered in the annular space. The cleaned liquid ultimately returns to the electroplating tank 3 through the outlet 115, while the high-pressure gas from the cleaning stage is injected in reverse through the outlet 115, creating turbulent scouring with the cleaning solution in the auxiliary filter channel 112.

[0042] Compared to existing technologies, traditional filters employ a single-channel structure, resulting in limited filtration area and a tendency to experience localized blockages, forcing shutdowns for cleaning. This solution utilizes a dual-channel design (main and auxiliary channels) to achieve liquid diversion filtration, increasing the effective filtration area within the same volume. The annular gap structure of the auxiliary filtration channel 112 forms a self-cleaning channel, assisting in particle trapping during normal filtration and transforming into a flushing channel during cleaning.

[0043] Through the above technical solution, this application effectively solves the filtration efficiency bottleneck caused by a single flow channel. It extends the service life of the filter media through staged filtration, and simultaneously utilizes optimized flow channel structure to achieve directional discharge of cleaning wastewater, significantly reducing wastewater generation per unit output. The synergistic effect of the main and auxiliary flow channels forms a closed loop between the filtration and cleaning processes, reducing system energy consumption while ensuring filtration accuracy.

[0044] Example 3

[0045] This application further proposes that the circulation pipeline 2 includes an inlet pipeline 21 for connecting the electroplating tank 3 and the inlet 113 of the filter assembly 1, and an outlet pipeline 22 for connecting the outlet 115 of the filter assembly 1 and the electroplating tank 3. An inlet valve 23 is provided on the inlet pipeline 21, and an outlet valve 24 is provided on the outlet pipeline 22.

[0046] The inlet pipe 21 is the fluid transport channel connecting the electroplating tank 3 and the filter assembly 1. It can be implemented using a corrosion-resistant metal pipe or a polymer material pipe, and its function is to directionally transport the electroplating solution containing impurities into the filter for purification. The outlet pipe 22 is the fluid return channel connecting the filter assembly 1 and the electroplating tank 3. It can be implemented using a pipe of the same material as the inlet pipe 21, and its function is to return the filtered clean electroplating solution to the production system for recycling. The inlet valve 23 is a flow control device installed in the inlet pipe 21, and its function is to precisely control the flow rate of the electroplating solution entering the filter by adjusting its opening degree. The outlet valve 24 is an opening and closing device installed on the outlet pipe 22, and can be implemented using a solenoid shut-off valve. Its function is to block or guide the return path of the filtered electroplating solution.

[0047] Specifically, during the electroplating solution filtration stage, inlet valve 23 and outlet valve 24 are open. The liquid containing impurities in the electroplating tank 3 enters the filter assembly 1 through the inlet pipe 21 for purification. The filtered clean liquid returns to the electroplating tank 3 through the outlet pipe 22. During this process, inlet valve 23 can adjust the inlet flow rate to match the filter's processing capacity, preventing a decrease in filtration efficiency due to excessive flow. When the filter needs cleaning, outlet valve 24 closes to disconnect the electroplating tank 3 from the filter, preventing cleaning chemicals from entering the production system. Simultaneously, inlet valve 23 can coordinate with the dosing pipeline to control the injection volume of cleaning chemicals. This combination of bidirectional pipelines and valves forms a closed-loop fluid control system with switchable operating modes.

[0048] Compared to existing technologies, traditional open-loop rinsing systems employ a unidirectional flow design, which prevents the recycling of the cleaning medium, resulting in a large amount of cleaning solution being discharged with the wastewater. This solution, however, constructs a closed-loop circulation pipeline 2, allowing the electroplating solution and cleaning solution to flow in independent channels, effectively isolating the production system from the cleaning system. The fixed flow rate rinsing operation of existing technologies is replaced with an adjustable valve-controlled flow rate, allowing for dynamic adjustment of the cleaning medium dosage based on the actual degree of contamination.

[0049] Through the above technical solution, this application achieves dynamic control of the electroplating solution circulation filtration and cleaning process, solving the problem of excessive wastewater discharge caused by fixed water volume rinsing. The synergistic effect of the valve group and pipelines enables the cleaning solution to flow in a directional manner and be reused, avoiding the loss of ineffective solution. During the cleaning stage, the closing operation of the outlet valve 24 effectively blocks the reverse permeation of contaminants into the production system, ensuring the purity of the solution in the electroplating tank 3. The closed-loop design of the pipeline system significantly reduces the wastewater treatment load and also reduces the amount of fresh cleaning solution needed for replenishment.

[0050] Example 4

[0051] This application further proposes that the cleaning component 4 includes a gas pipeline 41 for introducing high-pressure gas and a dosing tank 42 for storing cleaning solution; one end of the gas pipeline 41 is connected to a high-pressure gas source, and an inlet valve 45 is provided on the gas pipeline 41; the other end of the gas pipeline 41 is connected to an outlet 115; the outlet end of the dosing tank 42 is connected to an inlet pipeline 21 through a dosing pipeline, and a dosing valve 46 is provided on the dosing pipeline; the inlet end of the dosing tank 42 is connected to a drain outlet 114 through a return pipeline, and a drain valve 43 and a slag removal tank 44 are provided on the return pipeline.

[0052] Among them, gas pipeline 41 refers to the fluid channel connecting the high-pressure gas source and the filter assembly 1, which can be implemented using stainless steel pipe or pressure-resistant rubber pipe. Its function is to inject high-pressure gas into the filter assembly 1 in a reverse direction to form a reverse flushing force. Chemical dosing tank 42 refers to the container used to store cleaning chemicals, which can be implemented using a PE material storage tank with a liquid level sensor. Its function is to provide chemical agents for the cleaning stage and establish a chemical solution circulation system. Slag removal tank 44 refers to the solid-liquid separation device, which can be implemented using a sedimentation container with a filter screen. Its function is to intercept solid impurities that are shed during the cleaning process and maintain the reusability of the cleaning chemicals.

[0053] Specifically, during the cleaning stage, after the electroplating solution outlet valve 24 is closed, the air inlet valve 45 and the drain valve 43 are opened in conjunction. High-pressure gas enters the filter assembly 1 in reverse direction from the outlet 115 through the gas pipeline 41, forming a gas-liquid mixture with the cleaning solution output from the dosing tank 42 within the filter tank 101. The rotary motor 104 drives the cleaning brush 106 to mechanically scrape the surface of the filter material, and the turbulence effect generated by the gas-liquid mixture accelerates the removal of contaminants. The cleaning solution carrying impurities enters the return pipeline through the drain port 114, and the slag removal tank 44 separates solid particles through physical interception. The purified solution returns to the dosing tank 42 to form a closed-loop circulation. The synchronous control of the dosing valve 46 and the drain valve 43 ensures the directional flow of the cleaning medium within the system and prevents leakage of the cleaning solution.

[0054] Compared to existing technologies, traditional backwashing systems employ a unidirectional open pipeline design, directly discharging the cleaning medium after use, resulting in no chemical recovery and generating a large amount of wastewater. This solution constructs a circulation loop between the gas pipeline 41 and the dosing tank 42, enabling high-pressure gas and cleaning chemicals to form a synergistic cleaning mode, while simultaneously utilizing the slag removal tank 44 to achieve solid-liquid separation. In existing technologies, the cleaning chemicals can only be used once; this solution, through the cooperation of the return pipeline and the dosing tank 42, allows the chemicals to be recycled more than five times.

[0055] Through the above technical solution, this application achieves closed-loop recycling of cleaning chemicals, effectively reducing wastewater discharge. Solid pollutants are concentrated and retained in the slag removal tank 44, and the repeated liquid supply function of the dosing tank 42 improves the utilization rate of chemical agents and prevents the chemical solution from being lost with wastewater. The gas-liquid synergistic cleaning mode doubles the filter media cleaning efficiency and shortens downtime for cleaning.

[0056] Example 5

[0057] A non-sludge cleaning method based on an automatic cleaning filter includes the following steps:

[0058] S1. Filtering

[0059] Open the inlet valve 23 and the outlet valve 24. The electroplating solution containing impurities in the electroplating tank 3 enters the interior of the filter assembly 1 through the inlet pipe 21 under the action of the pump. During the process of flowing through the main filter channel 111 and the filter channel, the impurities are filtered out by the first filter assembly and the second filter assembly. The filtered electroplating solution flows back to the electroplating tank 3 through the outlet pipe 22.

[0060] S2. Cleaning

[0061] When too many impurities are trapped on the first and second filter components, the electroplating liquid outlet and outlet valve 24 of the electroplating tank 3 are closed, and the air inlet valve 45 and drain valve 43 are opened. High-pressure gas and cleaning solution enter the filter assembly 1 through the outlet 115 and inlet 113 respectively.

[0062] Start the rotary motor 104, which drives the rotating bracket 105 and the cleaning brush 106 to rotate. During the rotation of the rotating bracket 105 and the cleaning brush 106, the cleaning brush 106 removes the impurities trapped on the first and second filter components under the combined action of high-pressure gas and cleaning solution. The cleaning solution containing the impurities enters the slag removal tank 44 through the drain port 114. The impurities are trapped in the slag removal tank 44, and the cleaning solution flows back to the dosing tank 42.

[0063] The closure of the electroplating solution outlet and outlet valve 24 refers to establishing an independent cleaning circuit by cutting off the connecting pipeline between the electroplating tank 3 and the filter assembly 1. This can be achieved through the linkage control of a solenoid valve group, which isolates the production process from the cleaning operation. The combined action of high-pressure gas and cleaning solution refers to the delivery of compressed air and chemical solvent through the gas pipeline 41 and the chemical dosing pipeline, respectively. An alkaline cleaning agent with a pH of 9-11 and a gas-liquid two-phase flushing flow can be formed using a gas pressure of 0.6-0.8MPa. The rotation of the cleaning brush 106 by the rotary motor 104 refers to the rotation of the rotating bracket with nylon bristles by a geared motor, with the speed controllable in the range of 30-50rpm. This mechanical movement generates physical friction to remove scale from the surface of the filter media. The solid-liquid separation achieved by the slag removal tank 44 refers to the use of a multi-layer stainless steel filter screen structure with a mesh size of 50-100μm, which can trap metal particles with a diameter greater than 80μm.

[0064] Specifically, in the filtration stage, the electroplating solution is purified through a dual-filtration system. The main filtration channel 111 handles large particulate impurities, while the auxiliary filtration channel 112 intercepts fine suspended matter. When the differential pressure sensor detects that the channel pressure difference exceeds a set threshold, the control system automatically switches to cleaning mode. During cleaning, high-pressure gas is injected counter-currently from the top of the filtration channel to create turbulence, while cleaning solution is injected forward from the bottom to dissolve contaminants. A rotating cleaning brush 106 mechanically scrapes the surface of the filter media. The gas-liquid mixture carries the detached impurities into the slag removal tank 44, where it is separated by a three-stage filter screen. The purified cleaning solution is then returned to the dosing tank 42 for storage. The entire process is controlled by a PLC controller that coordinates the valve opening and closing sequence according to a preset program, ensuring seamless switching between cleaning operations and the production process.

[0065] Compared to existing technologies, traditional cleaning methods use a fixed water volume for segmented rinsing, such as consuming 500 liters of clean water for three rinsing cycles each time, requiring a pre-set procedure even after the rinsing solution has clarified. This solution, through a closed-loop circulation design, allows the cleaning solution to be reused 20-30 times after sludge removal treatment, reducing liquid consumption by over 95% compared to single-use cleaning methods. Existing technologies require multiple processes for wastewater discharge, including neutralization, flocculation, and membrane treatment, while this solution completely eliminates wastewater treatment steps due to media recycling. Traditional static soaking cleaning takes 2-3 hours, while this solution, through dynamic air-liquid flushing combined with mechanical cleaning, effectively reduces the cleaning time to 15-20 minutes.

[0066] Through the above technical solution, this application achieves a fully closed-loop recycling of cleaning chemicals. The liquid containing impurities generated during the cleaning process is reused in the cleaning operation after solid-liquid separation, completely eliminating wastewater discharge. The synergistic effect of the rotary brushing mechanism and the combined gas-liquid cleaning significantly improves the filter media regeneration efficiency and avoids ineffective waste of chemical agents. The closed-loop control system ensures automatic switching between cleaning operations and electroplating production, maintaining stable filtration efficiency during continuous production. The multi-stage filtration design of the slag removal tank 44 effectively extends the service life of the cleaning chemicals and reduces operating costs.

[0067] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present utility model.

[0068] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A non-sewage-discharge cleaning device based on an automatic cleaning filter, characterized in that, include: The filter assembly (1) is used to filter the electroplating solution containing impurities generated during electroplating in the electroplating tank (3); The circulation pipeline (2) is used to transport the electroplating solution containing impurities generated by the electroplating tank (3) to the filter assembly (1) and to transport the electroplating solution with impurities removed by the filter assembly (1) back to the electroplating tank (3). The cleaning assembly (4) is used to deliver high-pressure air and cleaning solution for cleaning to the filter assembly (1) and to recover the cleaning solution after cleaning the filter assembly (1); The filter assembly (1) includes a filter barrel (101), with an upper cover plate (102) and a lower cover plate (103) respectively provided at the top and bottom of the filter barrel (101); A rotary motor (104) is provided at the bottom of the lower cover plate (103). The output shaft of the rotary motor (104) passes through the lower cover plate (103) and is connected to a rotating bracket (105) provided in the filter barrel (101). Cleaning brushes (106) are provided on the inner and outer sides of the rotating bracket (105). A first filter assembly is provided on the outer side of the cleaning brush (106). The first filter assembly includes a first filter material frame (107) fixed on the lower cover plate (103) and a first filter material (108) provided on the first filter material frame (107). The bottom of the upper cover plate (102) is equipped with a first filter assembly, and the second filter assembly extends into the interior of the filter barrel (101) and is located inside the cleaning brush (106). The second filter assembly includes a second filter material frame (109) fixedly connected to the upper cover plate (102) and a second filter material (110) disposed on the second filter material frame (109).

2. The non-sewage cleaning device based on an automatic cleaning filter according to claim 1, characterized in that, The filter barrel (101) has an axially penetrating main filter channel (111) inside, and an auxiliary filter channel (112) is provided between the first filter assembly and the inner wall of the filter barrel (101). The lower cover plate (103) is provided with an inlet (113) and a drain (114) that are connected to the main filter channel (111) and the auxiliary filter channel (112), and the upper cover plate (102) is provided with an outlet (115) that are connected to the main filter channel (111) and the auxiliary filter channel (112).

3. The non-sewage cleaning device based on an automatic cleaning filter according to claim 2, characterized in that, The circulation pipeline (2) includes an inlet pipeline (21) for connecting the inlet (113) of the electroplating tank (3) and the filter assembly (1), and an outlet pipeline (22) for connecting the outlet (115) of the filter assembly (1) and the electroplating tank (3). An inlet valve (23) is provided on the inlet pipeline (21), and an outlet valve (24) is provided on the outlet pipeline (22).

4. The non-sewage cleaning device based on an automatic cleaning filter according to claim 3, characterized in that, The cleaning assembly (4) includes a gas pipeline (41) for introducing high-pressure gas and a dosing tank (42) for storing cleaning solution; One end of the gas pipeline (41) is used to connect to a high-pressure gas source. An inlet valve (45) is provided on the gas pipeline (41), and the other end of the gas pipeline (41) is connected to the outlet (115). The outlet end of the dosing tank (42) is connected to the liquid inlet pipe (21) through the dosing pipeline. A dosing valve (46) is provided on the dosing pipeline. The inlet end of the dosing tank (42) is connected to the drain outlet (114) through the return pipe. A drain valve (43) and a slag removal bucket (44) are provided on the return pipe.

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