Grinding fluid filtering and sterilizing system

Abstract

The utility model discloses a grinding fluid filtering and sterilizing system which comprises a precise filtering device used for removing solid particles in grinding fluid, a liquid purifying box of the precise filtering device is communicated with a sterilizing device used for killing microorganisms in the grinding fluid, and the sterilizing device comprises an electrolytic bath, a boron-doped diamond anode plate and a titanium cathode plate. Wherein the boron-doped diamond anode plates and the titanium cathode plates are alternately arranged in the electrolytic tank, the multiple boron-doped diamond anode plates are connected in series through anode electrode rods, and the multiple titanium cathode plates are connected in series through cathode electrode rods. Hydroxyl free radicals with strong oxidizing property are generated by electrolyzing water, so that the cellular structure of microorganisms can be quickly destroyed, and various microorganisms such as bacteria, viruses and fungi can be effectively killed.

Description

Technical Field

[0001] This utility model relates to the field of grinding fluid filtration systems, and more particularly to a grinding fluid filtration and sterilization system. Background Technology

[0002] In the metal grinding industry, grinding fluid plays a crucial role. It not only helps cool workpieces and tools, reducing friction and wear, but also removes chips and other debris. However, used grinding fluids often contain various impurities, including metal powder, grinding wheel particles, and organic matter, necessitating treatment through precision filtration equipment for recycling. Water-based grinding fluids, in particular, become susceptible to bacterial growth after repeated use due to their suitable environment. These microorganisms not only degrade the quality of the grinding fluid but also create biofilms. These biofilms adhere to the outside of the filter element in the filter canister, causing blockage and severely impacting the filter's throughput and efficiency.

[0003] To address this issue, current industrial practices typically employ physical or chemical methods to inhibit bacterial growth. Ultraviolet (UV) sterilization is one option, achieving sterilization by disrupting bacterial DNA structure. However, UV light has limited penetrating power, and its sterilization efficiency may be significantly reduced for grinding fluids with a high concentration of suspended matter. Furthermore, it cannot guarantee that all areas receive a sufficient radiation dose, resulting in less than satisfactory sterilization effects.

[0004] On the other hand, ozone, as a strong oxidant, can effectively kill a variety of microorganisms and has a high sterilization rate. However, ozone has a long residual time, which may cause the additives in the grinding fluid to decompose, changing their chemical properties and thus affecting the functionality of the grinding fluid. In addition, long-term exposure to high concentrations of ozone may accelerate the corrosion of metal components in the filtration system, shorten equipment life, and increase maintenance costs.

[0005] To address the above problems, this application proposes a solution. Summary of the Invention

[0006] Purpose of the utility model: The purpose of this utility model is to provide a grinding fluid filtration and sterilization system that can improve the sterilization effect of grinding fluid without affecting the life of metal components and equipment, and ensure the filtration efficiency of grinding fluid.

[0007] Technical Solution: The present invention discloses a grinding fluid filtration and sterilization system, comprising a precision filtration device for removing solid particles from the grinding fluid. The system is characterized in that: the clean fluid tank of the precision filtration device is connected to a sterilization device for eliminating microorganisms in the grinding fluid. The sterilization device includes an electrolytic cell, boron-doped diamond anode plates, and titanium cathode plates. The boron-doped diamond anode plates and titanium cathode plates are alternately arranged within the electrolytic cell. Multiple boron-doped diamond anode plates are connected in series via anode electrode rods, and multiple titanium cathode plates are connected in series via cathode electrode rods.

[0008] Preferably, the precision filtration device includes a filter tank and a purified liquid tank, the outlet of the filter tank is connected to the purified liquid tank, and the purified liquid tank is pumped into the sterilization device by a water pump.

[0009] Preferably, the anode electrode rod and the cathode electrode rod are connected to an external power source, and a circuit is formed using the grinding fluid after energization.

[0010] Preferably, the electrolytic cell is provided with an inlet tank and an outlet tank at both ends, and the inlet tank and the electrolytic cell are connected by a mesh plate with uniform through holes.

[0011] Preferably, the through holes on the mesh plate are oriented parallel to the arrangement direction of the boron-doped diamond anode and titanium cathode plates in the electrolytic cell.

[0012] Preferably, the liquid inlet is provided with a sterilization inlet, and the sterilization inlet and the through hole are oriented alternately, connecting the liquid inlet and the clean liquid tank.

[0013] Preferably, the liquid outlet is provided with a sterilization outlet, which is located at the top of the liquid outlet and connects the liquid outlet to the clean liquid tank.

[0014] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0015] (1) This utility model uses boron-doped diamond electrode as the core component of the sterilization device. By electrolyzing water, it generates highly oxidizing hydroxyl radicals (·OH), which can quickly destroy the cell structure of microorganisms and effectively kill various microorganisms such as bacteria, viruses and fungi.

[0016] (2) This utility model uses boron-doped diamond electrodes for sterilization. The generated active substances will quickly decompose into water and oxygen. After sterilization, no harmful substances or chemical residues will be left, thus maintaining the quality of the grinding fluid and avoiding secondary pollution.

[0017] (3) The hydroxyl radicals generated by the boron-doped diamond electrode in this invention reduce the risk of long-term corrosion to the filtration system and other metal components, and help extend the service life of the equipment.

[0018] (4) The design of the inlet and outlet tanks in this utility model prevents the grinding fluid from directly impacting the electrode plate, thus avoiding affecting the sterilization effect. At the same time, it ensures that the electrode plate is completely immersed in the grinding fluid during the working process, thereby improving work efficiency and safety. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention.

[0020] Figure 2 This is a schematic diagram of the three-dimensional view of this utility model after removing the top structure.

[0021] Figure 3 This is a three-dimensional structural diagram of the sterilization device after removing the outer shell.

[0022] Among them: 100, precision filtration device; 101, filter tank; 102, clean liquid tank; 103, water pump; 104, dirty liquid tank; 105, filter pump; 106, inlet pipe; 107, outlet pipe; 108, supply pump; 200, sterilization device; 201, electrolytic cell; 202, boron-doped diamond anode plate; 203, titanium cathode plate; 204, anode electrode rod; 205, cathode electrode rod; 206, inlet tank; 207, outlet tank; 208, first mesh plate; 209, second mesh plate; 210, through hole; 211, sterilization inlet; 212, sterilization outlet. Detailed Implementation

[0023] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0024] Example 1:

[0025] See appendix Figures 1-3 The figure shows a grinding fluid filtration and sterilization system of the present invention, which includes a precision filtration device for removing solid particles from the grinding fluid. The precision filtration device 100 includes a filter tank 101 and a clean liquid tank 102. The outlet of the filter tank 101 is connected to the clean liquid tank 102. The clean liquid tank 102 uses a water pump 103 to transport the grinding fluid into a sterilization device 200 for killing microorganisms in the grinding fluid.

[0026] In this embodiment, the sterilization device 200 includes an electrolytic cell 201, a boron-doped diamond anode plate 202, and a titanium cathode plate 203. The boron-doped diamond anode plate 202 and the titanium cathode plate 203 are alternately arranged in the electrolytic cell 201. Multiple boron-doped diamond anode plates 202 are connected in series through an anode electrode rod 204, and multiple titanium cathode plates 203 are connected in series through a cathode electrode rod 205.

[0027] In this embodiment, the anode electrode rod 204 and the cathode electrode rod 205 are respectively disposed inside the electrolytic cell 201 and connected to an external power source. After being energized, they form a circuit using the grinding fluid.

[0028] When the anode electrode rod 204 and the cathode electrode rod 205 are connected to an external power source, current flows through the grinding fluid to form a circuit between the anode and cathode. Multiple sets of boron-doped diamond anode plates 202 and titanium cathode plates 203 serve as working electrodes. Under the action of current, oxidation-reduction reactions occur. At the anode, due to the special properties of diamond material, it can withstand a high oxidation potential, allowing water molecules or chloride ions in the solution to be oxidized on the anode surface. The generated active substances, such as hydroxyl radicals (·OH) and hypochlorous acid (HOCl), have strong oxidizing power and can destroy the structure of microbial cells, thereby achieving a bactericidal effect. At the cathode, a reduction reaction occurs, and hydrogen ions (H+) are oxidized. + It gains electrons to produce hydrogen gas (H2).

[0029] In this embodiment, an inlet tank 206 and an outlet tank 207 are respectively provided at both ends of the electrolytic cell 201. A first mesh plate 208 is provided between the inlet tank 206 and the electrolytic cell 201. Through holes 210 are uniformly provided on the first mesh plate 208. A second mesh plate 209 is provided between the outlet tank 207 and the electrolytic cell 201. Through holes 210 are also uniformly provided on the second mesh plate 209. The inlet tank 206 and the electrolytic cell 201, and the outlet tank 207 and the electrolytic cell 201 are connected through the through holes 210.

[0030] In this embodiment, the through holes 210 on the first mesh plate 208 and the second mesh plate 209 are oriented parallel to the arrangement direction of the boron-doped diamond anode sheet 202 and titanium cathode sheet 203 in the electrolytic cell 210. This arrangement can prevent the boron-doped diamond anode sheet 202 and titanium cathode sheet 203 from interfering with the flow of grinding fluid when the grinding fluid enters and exits the electrolytic cell 201.

[0031] In this embodiment, a sterilization inlet 211 is provided on the liquid inlet tank 206. The sterilization inlet 211 and the through hole 210 are oriented alternately, connecting the liquid inlet tank 206 and the clean liquid tank 102. The alternate orientation of the sterilization inlet 211 and the through hole 210 can prevent the grinding fluid from flowing too fast and directly contacting the boron-doped diamond anode plate 202 and the titanium cathode plate 203, thus affecting the sterilization effect.

[0032] In this embodiment, a sterilization outlet 212 is provided on the liquid outlet tank 207. The sterilization outlet 212 is located at the top of the liquid outlet tank 207 and connects the liquid outlet tank 207 with the clean liquid tank 102. The arrangement of the sterilization outlet 212 at the top of the liquid outlet tank 207 can ensure that the boron-doped diamond anode plate 202 and titanium cathode plate 203 can be completely immersed in the liquid during the circulation and sterilization of the grinding fluid, thus preventing damage to the boron-doped diamond anode plate 202 and titanium cathode plate 203.

[0033] Example 2:

[0034] When the device is in operation, the untreated grinding fluid flows from the machine into the dirty liquid tank 104 of the precision filtration device 100. Under the action of the filter pump 105, the grinding fluid is transported to the filter tank 101 through the inlet pipe 106. The filter tank 101 is equipped with a filter element, which filters the grinding fluid. The filtered grinding fluid is discharged from the outlet of the filter tank 101 and transported to the clean liquid tank 102 for temporary storage through the outlet pipe 107. The grinding fluid in the clean liquid tank 102 is transported to the machine for use by the supply pump 108. The grinding fluid is circulated and filtered online.

[0035] When grinding fluid is used for a long time, a large number of microorganisms will grow, leading to bacterial growth and affecting the quality of the grinding fluid. At this time, sterilization device 200 is used to circulate and sterilize the grinding fluid in clean liquid tank 102.

[0036] The water pump 103 is started to deliver the grinding fluid from the clean liquid tank 102 to the inlet tank 206 through the sterilization inlet 211, and then into the electrolytic cell 201 through the first mesh plate 208. At this time, the anode electrode rod 204 and the cathode electrode rod 205 are connected to the power supply and energized. The current passes through the grinding fluid and forms a circuit between the anode and the cathode. Multiple sets of boron-doped diamond anode plates 202 and titanium cathode plates 203 serve as working electrodes. Under the action of the current, an oxidation-reduction reaction occurs, which sterilizes the grinding fluid in the electrolytic cell 201.

[0037] After being sterilized by the electrolytic cell 201, the grinding fluid flows from the second screen plate 208 into the outlet tank 207 and out of the sterilization outlet 212, re-entering the clean liquid tank 102, thus completing the entire sterilization process.

[0038] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A grinding fluid filtration and sterilization system comprising a precision filtration device for removing solid particles from a grinding fluid, characterized by: The precision filtering device is provided with a sterilization device for killing microorganisms in the grinding fluid in the clean liquid tank, the sterilization device comprises an electrolytic tank, boron-doped diamond anode plates and titanium cathode plates, the boron-doped diamond anode plates and the titanium cathode plates are alternately arranged in the electrolytic tank, a plurality of the boron-doped diamond anode plates are connected in series through anode electrode rods, and a plurality of the titanium cathode plates are connected in series through cathode electrode rods.

2. The grinding fluid filtration and sterilization system of claim 1, wherein: The precision filtering device comprises a filtering tank and a clean liquid tank, the liquid outlet of the filtering tank is communicated with the clean liquid tank, and the clean liquid tank delivers the grinding fluid into the sterilization device through a water pump.

3. The grinding fluid filtration and sterilization system of claim 1, wherein: The anode electrode rods and the cathode electrode rods are connected with an external power supply, and a loop of the grinding fluid is formed after electrification.

4. The filtration and sterilization system for grinding fluid according to claim 1, wherein: The electrolytic tank is provided with an inlet tank and an outlet tank at two ends, respectively, and the inlet tank and the electrolytic tank and the outlet tank and the electrolytic tank are communicated through mesh plates provided with uniform through holes.

5. The filtration and sterilization system for grinding fluid according to claim 4, wherein: The through holes on the mesh plate are parallel to the arrangement direction of the boron-doped diamond anode plates and the titanium cathode plates in the electrolytic tank.

6. The filtration and sterilization system for abrasive slurry according to claim 4, wherein: The inlet tank is provided with a sterilization inlet, the sterilization inlet is staggered with the through holes, and the inlet tank and the clean liquid tank are communicated.

7. The filtration and sterilization system for abrasive slurry according to claim 4, wherein: The outlet tank is provided with a sterilization outlet, the sterilization outlet is located at the top of the outlet tank, and the outlet tank and the clean liquid tank are communicated.

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