A purification and regeneration system for working fluid

Abstract

This utility model relates to the field of working fluid reprocessing, specifically a working fluid purification and regeneration system. It includes an electrical control box, a sterilization module, and a functional regeneration module. Both the sterilization module and the functional regeneration module are electrically connected to the electrical control box. The sterilization module includes a heater, a circulating pump, a dialysis filtration device, a first level gauge, and a filtration purification cartridge for holding the working fluid in use. The functional regeneration module includes a liquid-drawing mixer, a second level gauge, and a functional regeneration cartridge for holding the regenerated fluid. The liquid-drawing mixer is connected to the original fluid cartridge and is equipped with a second flow meter and a water inlet valve. A dispensing valve is installed between the circulating pump and the liquid-drawing mixer, and a return valve is also installed on the circulating pump. This product can achieve impurity and sterilization of the working fluid and concentration adjustment, ensuring the working fluid remains in an effective state and enabling long-term recycling of the working fluid without waste discharge or hazardous waste treatment.

Description

Technical Field

[0001] This utility model relates to the field of working fluid reprocessing, specifically a working fluid purification and regeneration system. Background Technology

[0002] Various parts processing uses a large amount of water-based cutting fluids, grinding fluids, cleaning fluids, and forming fluids for stamping, drawing, and wire drawing. Most of these working fluids are concentrated stock solutions made from mineral oil, emulsifiers, and various additives, which are then diluted with water to form cutting fluids, grinding fluids, cleaning fluids, and forming fluids. During use, these fluids can become contaminated with slag, oil, or anaerobic bacteria, leading to a gradual decline in their effectiveness, an increase in fine impurities, and ultimately, performance degradation. Microbial growth can also cause spoilage and foul odors. The traditional management model involves replacing the fluid only when it is no longer usable; this approach is defined in this paper as "replacing with new fluid after it has been used up."

[0003] Sterilizing cutting fluids can extend their service life, but sterilization with bactericides or ozone can cause chemical reactions that can damage the quality of the cutting fluid. Ultraviolet irradiation sterilization is less effective for cutting fluids due to their poor transparency and short flow contact time.

[0004] Replacing waste water-based processing fluids with new ones is a traditional method to ensure processing quality, but the waste fluids generated are detrimental to the environment. Continuously preparing new fluids for replacement consumes a large amount of water resources, while hazardous waste treatment increases production costs.

[0005] These waste liquids typically contain sludge, surfactants, metal ions, suspended impurities, fungicides, and various other additives. Indiscriminate discharge of these waste liquids will pollute water resources and soil, poison aquatic life, and cause multifaceted damage to the ecological environment. The aforementioned waste liquids are listed as HW09 hazardous waste in the National Hazardous Waste Inventory.

[0006] my country's manufacturing industry uses a large amount of water-based working fluids. In addition to forming fluids, drawing fluids, etc., a large amount of waste liquid from water-based processing fluids has caused great environmental pressure and water waste.

[0007] Currently, various hazardous waste treatment methods are used to transform these hazardous liquids into dischargeable waste liquids, or to recover water from the waste liquid using technologies such as low-temperature evaporation for reuse, thus reducing the volume of waste liquid before it is treated as hazardous waste. However, problems still exist, such as high cost of chemical treatment, the need for further treatment of the resulting clarified liquid to meet standards, and high investment, maintenance, and replacement costs.

[0008] With the continuous development of my country's manufacturing industry, the demand for water-based processing fluids is also increasing, and the amount of waste liquid generated is also increasing accordingly. The "waste-for-new" management model is facing huge environmental pressure.

[0009] The active ingredients in the aforementioned processing fluid gradually diminish and weaken during use, impurities gradually increase, and some may even become infected with bacteria and emit an odor, gradually deteriorating. However, this does not affect normal use until it eventually becomes ineffective. This "usable" state can last for several weeks or months. This article defines it as the "qualified and usable" state.

[0010] The reasons for working fluid failure are: (1) the consumption of effective ingredients leads to a decrease in functional activity, affecting the processing quality or cleaning quality; (2) the excessive concentration of fine impurities affects the tool life, surface finish or cleaning cleanliness; (3) the growth of bacteria leads to deterioration and odor.

[0011] If the working fluid can be maintained like equipment is regularly maintained—by continuously filtering out fine impurities and replenishing the active ingredients as needed—to keep the regeneration function active, failure can be avoided and it can be used repeatedly for a long time.

[0012] Water-based processing fluids, forming fluids, and other working fluids are usually formulated from base oils, surfactants, various additives and metal ions, fungicides and bactericides, etc. Cleaning fluids are usually formulated from a compound of surfactants, complexing agents, corrosion inhibitors, stabilizers, solubilizers, fungicides and bactericides, emulsifiers, etc.

[0013] The maintenance methods are: (1) Use fine filtration to remove impurities and bacteria (control anaerobic bacteria to below 1000 CFU / ml) to keep it clean; (2) Detect changes in active ingredients and replenish them to restore their functional vitality.

[0014] If, like performing regular maintenance and upkeep on equipment, the processing fluid is used regularly—by continuously purifying, sterilizing, and replenishing lost active ingredients—it will not become ineffective and can be used for a long time. This method is similar to kidney patients undergoing regular hemodialysis to remove toxins from their blood and maintain vitality. Continuous purification and regeneration, keeping the fine impurities and bacteria in the working fluid within permissible limits and adjusting the concentration to achieve regeneration, maintains the functional activity of the working fluid, prevents deterioration and foul odor, and allows for long-term recycling, preventing it from becoming waste and being discharged. Utility Model Content

[0015] To achieve the above objectives, the present invention aims to provide a purification and regeneration system for working fluid, which can solve the problems existing in the background art. The present invention provides the following technical solution:

[0016] A working fluid purification and regeneration system includes an electrical control box, a sterilization module, and a functional regeneration module. Both the sterilization module and the functional regeneration module are mounted on a base and electrically connected to the electrical control box. The sterilization module includes a heater, a circulation pump, a dialysis filtration device, a first level gauge, and a filtration cartridge for holding the working fluid in use. The first level gauge and the circulation pump are both connected to the filtration cartridge, and the circulation pump is also connected to the dialysis filtration device. The heater is installed at the bottom of the filtration cartridge. The dialysis filtration device is connected to the circulation pump, and a filtration unit is installed between the dialysis filtration device and the circulation pump. A regulating valve is installed between the dialysis filtration unit and the filtration purification cartridge. The filtration purification cartridge is equipped with an inlet valve, a switching valve, and a drain valve. The functional regeneration module includes a liquid-drawing mixer, a second level gauge, and a functional regeneration cartridge for holding the regeneration solution. Both the liquid-drawing mixer and the second level gauge are connected to the functional regeneration cartridge. A concentration meter is installed on the functional regeneration cartridge. The functional regeneration cartridge is also connected to the dialysis filtration unit, the circulating pump, and the original solution cartridge. The liquid-drawing mixer is connected to the original solution cartridge, which is equipped with an original solution valve and a first flow meter. The liquid-drawing mixer is equipped with a second flow meter and a charging valve. A dispensing valve is installed between the water valve, the circulating pump, and the liquid mixer. A return valve is also installed on the circulating pump. The circulating pump delivers the working solution from the fine filtration cartridge to the dialysis fine filtration unit. The dialysis fine filtration unit removes impurities and sterilizes the working solution. After impurity removal and sterilization, the working solution flows back to the fine filtration cartridge. The working solution gradually decreases during continuous circulation and filtration between the circulating pump and the dialysis fine filtration unit. When the liquid level in the fine filtration cartridge drops to a low level, the first level gauge sends a low-level detection signal, controlling the inlet valve to open. When the liquid level is increased to a high level, the second level gauge... When a level gauge sends a high-level detection signal, the inlet valve closes, stopping the addition of liquid. The working solution can continue to circulate and filter. When the working solution temperature is too low or the viscosity is too high, it needs to be heated appropriately. At this time, the heater works, which can improve the efficiency of dialysis filtration. The number of fine impurities and bacteria intercepted by dialysis filtration in the working solution will accumulate and increase, and the concentration will also increase. When the viscosity increases to the point that it is not conducive to the circulation pump, open the switching valve and drain valve at the bottom of the fine filtration purification cartridge to drain the thick dirty liquid. Then open the inlet valve and input the working solution in use to start the next round of fine filtration. The small amount of thick dirty liquid discharged can be mixed with sawdust and dried for solid waste treatment. The process of adjusting the concentration of the working solution in use is as follows: set the concentration parameters on the electrical control box, measure the liquid level signal by the second level gauge to calculate the amount of solution to be prepared, and monitor the concentration of the regenerated solution in real time by the concentration meter. If the measured concentration is too low, turn on the circulation pump, dispensing valve and raw material valve to pump and circulate the liquid. The fluid generates negative pressure in the pump mixer, and the required amount of raw material is pumped in through the raw material valve and the first flow meter. The raw material is quickly mixed in the pump mixer, and then the impeller of the circulation pump cuts and stirs it at high speed to fully mix it into the working solution with the required concentration.If the measured concentration is too high, open the water inlet valve and input the required water through the second flow meter. Turn on the circulation pump and dispensing valve to circulate and mix the solution until the set concentration is reached. Then, open the return valve and close the dispensing valve. The circulation pump will send the regenerated solution with adjusted concentration to the fine filtration purification cartridge for reuse. The process of preparing new working solution is as follows: First, open the water inlet valve to input water according to the dispensing volume set in the control box and accurately measure it. Then, open the circulation pump, dispensing valve, and raw material valve to draw in the raw material. The amount of raw material drawn in is accurately measured by the first flow meter and controlled by the raw material valve. The drawn-in raw material is rapidly mixed in the liquid mixer, and then subjected to high-speed cutting and stirring by the circulation pump impeller to achieve a fully mixed working solution of the required concentration. Open the return valve and close the dispensing valve. The circulation pump will send the prepared working solution to the fine filtration purification cartridge. The automatic liquid replenishment process during equipment operation is as follows: Open the circulation pump and return valve, and replenish the required amount of working solution according to the liquid level signal in the liquid-using equipment tank. The purification and regeneration of the working fluid are handled in parallel during its operation. A portion of the working fluid in use is extracted for bypass circulation maintenance, and the maintained working fluid is returned to the equipment using the fluid for reuse. This bypass treatment does not affect the operation of the original equipment or the working fluid. The bypass circulation volume can be calculated based on the total amount of working fluid and its expiration cycle. It is economically reasonable to ensure that the bacteria content of the working fluid in use is always controlled below 1000 CFU / ml, ensuring that the working fluid remains at a qualified and usable level for long-term recycling and will not become ineffective or need for disposal.

[0017] As a further aspect of this invention: the dialysis filtration device includes a housing and a sterilizing filter membrane unit installed within the housing. The sterilizing filter membrane unit includes a filter membrane and a ceramic membrane filter tube. The filter membrane is sintered onto the surface of the ceramic membrane filter tube. It can selectively intercept certain types of bacteria based on their size, hence the name "sterilizing filter membrane." It can generally filter impurities and bacteria larger than 0.5 micrometers. The bacterial separation process is based on a "cross-flow filtration" mode, where the fluid flows tangentially across the filter membrane surface. This reduces pore clogging and achieves precise interception and removal of certain types of bacteria through selective sieving of pore size.

[0018] As a further embodiment of this invention: the dialysis filtration device is connected using flanges and connecting bolts. A shut-off valve is also installed on the dialysis filtration device. Because the processing capacity of the sterilization membrane unit may decrease due to clogging after prolonged use, the shut-off valve can be closed, the flange and connecting bolts removed, and the entire unit can be removed and replaced with a spare for continued use. The replaced sterilization membrane unit can be reused after cleaning.

[0019] As a further embodiment of this utility model, both the fine filtration purification cartridge and the functional regeneration cartridge are made of PVC material, which is easy to process and has a long service life.

[0020] As a further embodiment of this utility model: the regulating valve, water filling valve, liquid dispensing valve, return valve, liquid inlet valve, switching valve and liquid discharge valve are all made of PVC material.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This product is rationally designed. Through the cooperation of various components, it can remove impurities and bacteria from the working solution and adjust its concentration, so that the working solution can always be in an effective state and can be used for a long time. Attached Figure Description

[0023] Figure 1 This is a side view of the purification and regeneration system of the working fluid in an embodiment of this utility model.

[0024] Figure 2 This is a front view of the purification and regeneration system of the working fluid in an embodiment of this utility model.

[0025] Figure 3 This is a top view of the purification and regeneration system of the working fluid in an embodiment of this utility model.

[0026] Figure 4 This is a schematic diagram illustrating the working principle of the purification and regeneration system for the working fluid in this embodiment of the present invention.

[0027] Figure 5 A comparison diagram showing the operation of cutting fluid using existing methods and the present invention.

[0028] Figure 6 A comparison diagram showing the operation of the cleaning fluid using existing methods and the present invention.

[0029] In the diagram: 2-Switching valve; 3-Dispensing valve; 4-Base; 5-Second level gauge; 6-Circulating pump; 7-Return valve; 8-Electrical control box; 9-Regulating valve; 10-Concentration meter; 11-Dialysis fine filtration device; 12-Liquid extraction mixer; 13-Functional regeneration cylinder; 14-Heater; 15-Fine filtration purification cylinder; 16-First level gauge; 17-Discharge valve; 18-Dialysis outlet pipe; 19-Stop valve; 20-Inlet valve; 21-First flow meter; 22-Second flow meter; 23-Supplier valve; 24-Water valve; 25-Supplier cylinder. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0032] Example 1, please refer to Figures 1-4This utility model provides a working fluid purification and regeneration system, including an electrical control box 8, a sterilization module, and a functional regeneration module. Both the sterilization module and the functional regeneration module are mounted on a base 4 and electrically connected to the electrical control box 8. The sterilization module includes a heater 14, a circulation pump 6, a dialysis filtration device 11, a first level gauge 16, and a filtration purification cartridge 15 for holding the working fluid in use. The first level gauge 16 and the circulation pump 6 are both connected to the filtration purification cartridge 15, and the circulation pump 6 is also connected to the dialysis filtration device 11. The heater 14 is installed at the lower part of the filtration purification cartridge 15. The dialysis filtration device 11 is connected to the circulation pump 8. Regulating valves 9 are installed between the circulating pump 6 and between the dialysis filtration unit 11 and the filtration purification cartridge 15. The filtration purification cartridge 15 is equipped with an inlet valve 20, a switching valve 2, and a drain valve 17. The functional regeneration module includes a liquid pumping mixer 12, a second level gauge 5, and a functional regeneration cartridge 13 for holding the regeneration solution. The liquid pumping mixer 12 and the second level gauge 5 are both connected to the functional regeneration cartridge 13. A concentration meter 10 is installed on the functional regeneration cartridge 13. The functional regeneration cartridge 13 is also connected to the dialysis filtration unit 11, the circulating pump 6, and the original solution cartridge 25. The liquid pumping mixer 12 is connected to the original solution cartridge 25, and an original solution valve 23 and a first flow meter are installed on the original solution cartridge 25. 21. A second flow meter 22 and a water inlet valve 24 are installed on the liquid mixing unit 12. A liquid dispensing valve 3 is installed between the circulating pump 6 and the liquid mixing unit 12. A return valve 7 is also installed on the circulating pump 6. The circulating pump 6 sends the working fluid in the fine filtration cartridge 15 into the dialysis fine filtration device 11. The dialysis fine filtration device 11 removes impurities and sterilizes the working fluid in use. The working fluid in use after removing impurities and sterilizing flows back to the fine filtration cartridge 15. The working fluid in use gradually decreases during the continuous circulation and filtration between the circulating pump 6 and the dialysis fine filtration device 11. When the liquid level in the fine filtration cartridge 15 drops to a low level, the first level gauge 16 sends a low level detection signal, controlling... When the inlet valve 20 is opened and the liquid level is reached, the first level gauge 16 sends a high-level detection signal, the inlet valve 20 closes, and the liquid addition stops. The working liquid can continue to circulate and filter. When the working liquid temperature is too low or the viscosity is too high, it needs to be heated appropriately. At this time, the heater 14 works, which can improve the efficiency of dialysis filtration. The number of fine impurities and bacteria intercepted by dialysis filtration in the working liquid will accumulate and increase, and the concentration will also increase. When the viscosity increases to a level that is not conducive to the circulation pump 6, the switching valve 2 and the drain valve 17 at the bottom of the fine filtration purification cylinder 15 are opened to discharge the thick dirty liquid. Then the inlet valve 20 is opened again to input the working liquid in use and start the next round of fine filtration. The small amount of thick dirty liquid discharged can be mixed with sawdust and dried for solid waste treatment. The process of adjusting the concentration of the working liquid in use is as follows: the concentration parameter is set on the electrical control box 8, the liquid level signal is measured by the second level gauge 5, and the amount of liquid to be prepared is calculated. The concentration of the regenerated liquid is monitored in real time by the concentration meter 10.If the measured concentration is too low, the circulation pump 6, the dispensing valve 3, and the raw liquid valve 23 are opened for liquid pumping and circulation. The fluid generates negative pressure in the pumping mixer 12, drawing in the required amount of raw liquid through the raw liquid valve 23 and the first flow meter 21. This raw liquid is rapidly mixed in the pumping mixer 12, and then further mixed evenly by the impeller of the circulation pump 6 at high speed to achieve the required concentration of working solution. If the measured concentration is too high, the water supply valve 24 is opened, and the required amount of water is input through the second flow meter 22. The circulation pump 6 and the dispensing valve 3 are then opened for circulation, stirring, and mixing until the set concentration is reached. Then, the return valve 7 is opened and the dispensing valve 3 is closed. The circulation pump 6 sends the regenerated solution with adjusted concentration to the fine filtration purification cartridge 15 for reuse. The process of preparing a new working solution is as follows: First, according to the dispensing volume set in the electrical control box 8, the water supply valve 24 is opened to input water and accurately measured. Then, the circulation pump 6, the dispensing valve 3, and the raw liquid valve 23 are opened to pump in the raw liquid. The amount of raw liquid pumped in is accurately measured by the first flow meter 21 and controlled by the raw liquid valve 23. The drawn-in stock solution is rapidly mixed in the liquid mixer 12, and then subjected to high-speed cutting and stirring by the impeller of the circulating pump 6 to achieve a fully mixed working solution of the required concentration. The return valve 7 is opened and the dispensing valve 3 is closed, and the circulating pump 6 sends the prepared working solution into the fine filtration purification cartridge 15. The automatic liquid replenishment process during equipment operation involves opening the circulating pump 6 and the return valve 7, and replenishing the required amount of working solution according to the liquid level signal in the liquid-using equipment tank. The purification and regeneration of the working solution are handled in parallel during operation. A portion of the working solution in use is extracted for bypass circulation maintenance, and the maintained working solution is returned to the liquid-using equipment for reuse. This bypass treatment does not affect the operation of the original equipment and the working solution. The bypass circulation volume can be calculated based on the total amount of working solution and its failure cycle to ensure that the bacteria count in the working solution is always controlled below 1000 CFU / ml for economical and reasonable operation, ensuring that the working solution remains at a qualified and usable level for long-term reuse without becoming unusable.

[0033] In one embodiment of this utility model, the dialysis fine filtration device 11 includes a housing and a sterilization filter membrane unit installed inside the housing. The technology is mature, the performance is good, and it is readily available on the market.

[0034] In one embodiment of this invention, the sterilization filter membrane unit includes a filter membrane and a ceramic membrane filter tube. The filter membrane is sintered onto the surface of the ceramic membrane filter tube. The filter membrane pore size can be selectively used to intercept certain types of bacteria based on their size; this is called a "sterilization filter membrane." It can generally filter impurities and bacteria larger than 0.5 micrometers. The bacterial separation process is based on a "cross-flow filtration" mode, where the fluid flows tangentially across the filter membrane surface. This reduces pore blockage and achieves precise interception and removal of certain types of bacteria through pore size selective sieving.

[0035] In one embodiment of this utility model, the dialysis filtration device 11 is connected by flanges and connecting bolts. A shut-off valve 19 is also installed on the dialysis filtration device 11. Because the processing capacity of the sterilization membrane unit may decrease due to clogging after prolonged use, the shut-off valve 19 can be closed, the flange and connecting bolts removed, and the entire unit can be removed and replaced with a spare for continued use. The replaced sterilization membrane unit can be cleaned and reused, reducing equipment costs.

[0036] In one embodiment of this utility model, both the fine filtration purification cylinder 15 and the functional regeneration cylinder 13 are made of PVC material, which is easy to process and has a long service life.

[0037] In one embodiment of this utility model, the regulating valve 9, the water adding valve 24, the liquid dispensing valve 3, the return valve 7, the liquid inlet valve 20, the switching valve 2, and the liquid draining valve 17 are all made of PVC material.

[0038] The existing technology of "generating waste liquid first and then treating waste liquid" and this product's "purification, regeneration, and reuse" are two different technical solutions. For working fluids such as cutting fluids and cleaning fluids, the difference between the two technical solutions can be expressed using a working fluid management model diagram, see [link to diagram]. Figure 5 and Figure 6 .

[0039] Figure 5 and Figure 6 The horizontal axis represents the usage time of the working fluid, and the vertical axis represents the degree of contamination of the working fluid in use. The arrows and diagonal lines indicate the quality changes of the processing fluid from when it was first prepared until the extended usage time. Figure 5 The left image and Figure 6 The left figures show traditional technical solutions for the treatment of hazardous waste generated from cutting fluid and cleaning fluid. Figure 5 The left image and Figure 6 The left image shows that the effective components of newly prepared cutting fluids and cleaning fluids gradually diminish during use, impurities increase, and anaerobic bacteria slowly multiply. However, they remain in a "qualified and usable" state for the first few months. Odor emission and gradual performance degradation become increasingly severe over time, eventually leading to spoilage, foul odor, and ineffectiveness after about six months. In such cases, they are discarded for hazardous waste disposal and reconstituted with fresh fluid. This traditional management model for cutting fluids and cleaning fluids continuously generates both products and waste fluids. Different qualities of working fluids have different lifespans; some companies discard them for hazardous waste disposal every three months and reconstitute with fresh fluid. This approach is creating an increasingly large-scale hazardous waste treatment industry.

[0040] Figure 5 The right image and Figure 6 The right figures show new technological solutions for cutting fluid and cleaning fluid that produce no waste liquid and require no hazardous waste treatment. Figure 5 The right image and Figure 6As shown in the right-hand diagram, purification and regeneration maintenance should be performed during the "qualified and usable" stage of the working fluid (e.g., around 4 months, depending on the working fluid). This purification and regeneration keeps the working fluid in a "qualified and usable" state, preventing it from becoming "waste fluid" and reducing "waste disposal" at the source. If the treatment cycle is shortened to 2 months, the quality of the purified and regenerated working fluid will be even better. If it is shortened to 1 month, the quality of the purified and regenerated working fluid will be almost the same as newly prepared.

[0041] from Figure 5 and Figure 6 As can be seen, the traditional approach involves first generating wastewater during the production process and then treating it. As the amount of wastewater generated by industrial manufacturing increases, the amount of wastewater produced by traditional technologies for full treatment also increases, placing a huge burden on environmental protection and wasting resources—an unsustainable working fluid management model. In contrast, the new technology solution of this product eliminates the generation of wastewater during the production process, replacing hazardous waste treatment with purification and regeneration maintenance. This significantly reduces the environmental burden, saves substantial resources, and represents a sustainable working fluid management model.

[0042] The new technology proposed for this product defines the quality of the working fluid as "qualified and usable" before it fails. The new technology solution aims to determine the economically reasonable treatment cycle and cyclic treatment volume required to maintain "qualified and usable".

[0043] The bypass circulation treatment cycle and treatment capacity of the new technology solution are calculated based on the total amount of working fluid in the equipment and the time when the working fluid concentration decays beyond the standard or the time when the number of bacteria multiplies exceeds the standard.

[0044] With a total volume of 10m 3 Taking the working fluid as an example, if we take 1m 3 If a bypass circulation is performed at a circulation rate of / h, then theoretically all the working fluid can be circulated and processed once in 10 hours.

[0045] If the measured working solution concentration decay exceeds the standard for 100 hours and the bacterial growth exceeds the standard for 150 hours, take 1m 3 If a loop of / h is used as a bypass loop, then the processing cycle is calculated based on the shorter over-limit time as follows:

[0046] Processing cycle (hours) = 100h - (10m) 3 / 1m 3 / h) = 90h

[0047] If we take 5m 3 If a bypass circulation is used with a circulation rate of / h, then theoretically the entire working fluid can be circulated and processed once in 2 hours. The processing cycle (hours) = 100h - (10m) 3 / 5m 3 / h)=98h

[0048] Besides the total amount and quality of the working fluid, the circulation capacity is also related to the investment in equipment. Under the premise of ensuring that concentration decay and bacterial growth do not exceed limits, choosing a smaller circulation capacity is clearly more reasonable and economical from a techno-economic perspective. The technical solution of this product is based on this principle—that is, determining the purification and regeneration cycle and bypass circulation volume is based on maintaining the working fluid as "qualified and usable" and preventing it from becoming waste liquid.

[0049] This technical solution can be implemented by concentration sensor detection + bacterial count detection + electronic control system (suitable for large systems), or it can be completed by manual detection and adjustment (suitable for small systems with low-cost investment).

[0050] It should be noted that, in this utility model, unless otherwise explicitly specified and limited, the terms "fixed," "set up," etc., should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A working fluid purification and regeneration system, comprising an electric control box, a bacteria removal module and a functional regeneration module, the bacteria removal module and the functional regeneration module are both installed on a base and electrically connected with the electric control box, characterized in that, The sterilization module includes a heater, a circulating pump, a dialysis filtration device, a first level gauge, and a filtration purification cartridge for holding the working solution in use. The first level gauge and the circulating pump are both connected to the filtration purification cartridge, and the circulating pump is also connected to the dialysis filtration device. The heater is installed at the bottom of the filtration purification cartridge. Regulating valves are installed between the dialysis filtration device and the circulating pump, and between the dialysis filtration device and the filtration purification cartridge. The filtration purification cartridge is equipped with an inlet valve, a switching valve, and a drain valve. The functional regeneration module includes a liquid extraction mixer, a second level gauge, and a functional regeneration cartridge for holding the regeneration solution. The liquid extraction mixer and the second level gauge are both connected to the functional regeneration cartridge. A concentration meter is installed on the functional regeneration cartridge. The functional regeneration cartridge is also connected to the dialysis filtration device, the circulating pump, and the stock solution cartridge. The liquid extraction mixer is connected to the stock solution cartridge. The stock solution cartridge is equipped with a stock solution valve and a first flow meter. The liquid extraction mixer is equipped with a second flow meter and a water addition valve. A dispensing valve is installed between the circulating pump and the liquid extraction mixer. A return valve is also installed on the circulating pump.

2. The purification and regeneration system for the working fluid according to claim 1, characterized in that, The dialysis filtration device includes a housing and a sterile filter membrane unit installed inside the housing.

3. The purification and regeneration system for the working fluid according to claim 1, characterized in that, The dialysis filtration device is connected using flanges and connecting bolts.

4. The purification and regeneration system for the working fluid according to claim 1 or 2, characterized in that, The dialysis filtration device is also equipped with a shut-off valve.

5. The purification and regeneration system for the working fluid according to claim 1, characterized in that, Both the fine filtration purification cartridge and the functional regeneration cartridge are made of PVC material.

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