Cutting fluid purification apparatus and method

Abstract

The application discloses a cutting fluid purification device and method, comprising a bearing and a purification system component arranged thereon. The purification system comprises an oil filtering tank, a filter group, a cavitation deodorizer and an ultraviolet device connected in sequence. The oil filtering tank is divided into an oil skimming chamber, an oil separation chamber and a purification chamber by a partition, and the oil skimming chamber is provided with a disc type oil skimmer to remove impure oil, and the oil separation chamber is provided with an overflow port to store the impure oil into an oil storage tank. The filter group filters impurities in the cutting fluid; the cavitation deodorizer uses ultrasonic cavitation effect to inhibit bacteria and remove odor, and the ultraviolet device performs secondary sterilization and then outputs to complete the purification cycle. The application integrates the functions of impure oil filtering, impurity filtering and sterilization and deodorization, does not need to input chemical agents in the purification cycle, avoids secondary pollution, and has excellent purification effect. Meanwhile, the device is provided with universal wheels supporting movement, so that on-site deployment and operation and maintenance are facilitated.

Description

Technical Field

[0001] This invention relates to the field of cutting fluid treatment technology, and in particular to a cutting fluid purification device and method. Background Technology

[0002] In the mechanical field, cutting fluid is a widely used liquid for lubrication, cooling, and cleaning in machine tool processing. Due to cost considerations, cutting fluid is typically recycled for extended periods. During this process, influenced by environmental and operating conditions, the cutting fluid continuously deteriorates due to the intrusion of various contaminants. The main reasons include: the mixing of machine tool guideway oil, hydraulic oil, and other miscellaneous oils into the cutting fluid, forming an oil layer; the introduction of metal particles and impurities generated during processing; and the long-term exposure of the cutting fluid to the environment, which easily leads to the growth of bacteria and fungi, causing liquid spoilage and unpleasant odors. The cumulative effect of these oil stains, impurities, and microbial contamination significantly shortens the service life of the cutting fluid, necessitating frequent discharge of waste cutting fluid and replenishment with new fluid, substantially increasing production costs and environmental pressure for enterprises.

[0003] Currently, various types of treatment equipment and processes exist in the industry for the purification of cutting fluids, but overall, significant technological limitations remain. Existing cutting fluid treatment equipment generally has limited functionality, typically equipped with only a single filtration or skimming module. It can only filter and remove impurities or floating oil, failing to achieve integrated treatment of impurities, floating oil, and bacteria. Furthermore, the treated cutting fluid still suffers from microbial contamination, making it difficult to meet the quality requirements for recycling. Some treatment equipment uses the addition of bactericides, deodorizers, and other chemical agents to combat microbial contamination. While this method can achieve antibacterial and deodorizing effects in the short term, the continuous addition of chemicals during recycling will damage the stability of the cutting fluid and easily lead to chemical residues causing secondary pollution, which does not meet environmental protection requirements.

[0004] In addition, existing cutting fluid purification equipment is generally a fixed, split structure, which occupies a large area and is not convenient for on-site relocation, deployment, and daily operation and maintenance.

[0005] Therefore, there is an urgent need for a cutting fluid purification device that can integrate multiple purification functions to achieve comprehensive treatment and recycling of cutting fluid. Summary of the Invention

[0006] To address the shortcomings of the aforementioned technologies, this invention provides a cutting fluid purification device.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: a cutting fluid purification device, including a support structure, and a purification system component is installed on the support structure; The purification system components include an oil filter tank, a filter assembly, an cavitation deodorizer, and an ultraviolet light device connected in sequence. The oil filter tank is equipped with a first partition and a second partition, and the oil filter tank is divided into an oil skimming chamber, an oil separating chamber and a purification chamber by the first partition and the second partition; a disc-type oil skimmer is installed at the top of the oil skimming chamber, and the oil outlet of the disc-type oil skimmer is guided to the oil separating chamber. The oil filter tank is connected to the unit's inlet and overflow port, and the ultraviolet light device is connected to the unit's outlet. The bottom of the support structure is equipped with casters, and the support structure is also fitted with a housing.

[0008] The supporting structure also houses electrical box components that are electrically connected to the purification system components.

[0009] Furthermore, the oil skimming chamber of the oil filter tank is provided with a tank inlet, and the oil skimming chamber is provided with a chamber overflow outlet that connects to the purification chamber.

[0010] Furthermore, the oil separator of the oil filter tank is provided with an oil overflow port that connects to the outside; an oil storage tank is provided on one side of the oil filter tank, and the oil storage tank is located below the outlet end of the oil overflow port.

[0011] Furthermore, the purification chamber of the oil filter tank is equipped with a tank outlet and a tank overflow port, and the tank overflow port is connected to a quick-connect valve to form the unit overflow port of the equipment. A liquid level sensor is installed in the purification chamber.

[0012] Furthermore, the oil filter tank is connected to a first pump set, and the inlet of one pump of the first pump set is connected to a quick-connect valve to form the unit inlet of the equipment; the outlet of one pump of the first pump set is connected to the tank inlet of the oil filter tank. The unit's liquid inlet is connected to a lifting liquid inlet mechanism.

[0013] Furthermore, a second pump set is installed between the oil filter tank and the filter assembly; the inlet of the second pump set is connected to the outlet of the oil filter tank; the outlet of the second pump set is connected to the filter inlet of the filter assembly.

[0014] Furthermore, the filter assembly has a built-in filter element for removing impurities, and the filter assembly is equipped with a sensor assembly.

[0015] Furthermore, the cavitation deodorizer includes an ultrasonic device for generating a cavitation effect, and the ultrasonic device is connected to the filter outlet of the filter assembly; the ultrasonic device is provided with an ultrasonic outlet, and the ultrasonic outlet is connected to the device inlet of the ultraviolet device.

[0016] Furthermore, the ultraviolet device has a built-in ultraviolet lamp, and the device outlet of the ultraviolet device is connected to the unit outlet of the equipment via a quick-connect fitting.

[0017] The purification method based on the above-mentioned cutting fluid purification equipment includes the following steps: Step 1: Start the first pump unit. The first pump unit delivers the cutting fluid to be purified through the unit's inlet to the skimming chamber of the oil filter tank. Step 2: The cutting fluid to be purified separates into layers in the skimming chamber. Impurities rise to the top as a floating oil layer, while the cutting fluid settles at the bottom. The disc skimmer operates, guiding the floating oil to the oil separation chamber. The floating oil in the oil separation chamber overflows through the floating oil overflow port into the oil storage tank for storage. At the same time, the cutting fluid deposited in the skimming chamber is transported to the purification chamber through the chamber overflow port. Step 3: The liquid level sensor in the purification chamber monitors the liquid level. When the liquid level exceeds the threshold, the second pump set starts to deliver the cutting fluid in the purification chamber to the filter set. Step 4: After the cutting fluid is introduced into the filter group, its built-in filter element filters out impurities in the cutting fluid, and the cutting fluid after the impurities are filtered out is output to the cavitation deodorizer. Step 5: After the ultrasonic device of the cavitation deodorizer is input into the cutting fluid, the ultrasonic device is activated and generates a cavitation effect, which destroys the cell structure of bacteria and fungi in the cutting fluid and eliminates odor. The treated cutting fluid is then output to the ultraviolet device. Step six: After the cutting fluid is introduced into the ultraviolet device, the ultraviolet lamps built into the ultraviolet device are activated and emit ultraviolet light to kill the remaining microorganisms in the cutting fluid. The purified cutting fluid is then output through the unit's outlet.

[0018] This invention provides a cutting fluid purification device that integrates an oil filter tank, filter group, cavitation deodorizer, and ultraviolet device into a single unit, constructing a purely physical purification chain. This system efficiently removes floating oil, impurities, odors, and microbial flora from the cutting fluid, achieving comprehensive treatment of multiple pollutants. It effectively overcomes the shortcomings of existing equipment that is limited in function and unable to achieve integrated purification. Furthermore, the entire process requires no addition of any chemical agents such as bactericides or deodorizers, avoiding damage to the cutting fluid's lubrication and cooling properties from chemical residues and eliminating the risk of secondary pollution. In addition, the device integrates all functional components onto a flexible and movable support structure, resulting in a compact overall structure and small footprint. Combined with a lifting inlet mechanism and quick-connect valves, it can be quickly deployed between different workstations, and operation and maintenance are extremely simple, greatly improving the flexibility and convenience of on-site use. It possesses high practical value and broad application prospects. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the internal mechanism of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the first pump unit of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the oil filter tank of the present invention.

[0023] Figure 5 This is a side view of the oil filter tank of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the second pump unit of the present invention.

[0025] Figure 7 This is a three-dimensional structural diagram of the filter assembly of the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the ultraviolet device of the present invention.

[0027] In the diagram: 1. Lifting-type liquid inlet mechanism; 2. Unit liquid inlet; 3. Unit liquid outlet; 4. Unit overflow outlet; 10. First pump group; 11. First pump inlet; 12. First pump outlet; 20. Second pump group; 21. Second pump inlet; 22. Second pump outlet; 30. Ultraviolet light device; 31. Device liquid inlet; 32. Device liquid outlet; 40. Filter group; 41. Filter liquid inlet; 42. Filter liquid outlet; 43. Sensor assembly; 5 0. Oil filter tank; 51. Skimming chamber; 52. Oil separator; 53. Purification chamber; 54. Chamber overflow port; 55. Floating oil overflow port; 56. Tank inlet; 57. Tank outlet; 58. Tank overflow port; 60. Disc skimmer; 70. Oil storage tank; 80. Cavitation deodorizer; 81. Ultrasonic device; 82. Ultrasonic outlet; 90. Electrical box assembly; 101. Support structure; 102. Housing; 103. Casters. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0029] Example 1: like Figure 1 and Figure 2 As shown, this invention discloses a cutting fluid purification device, which includes a support frame 101 and purification system components mounted on it. The purification system components include an oil filter tank 50, a filter assembly 40, an ultraviolet light device 30, a cavitation deodorizer 80, and connecting piping components. The support frame 101 is the mounting base of the device, and its four bottom corners are equipped with casters 103 supporting multi-directional movement to facilitate the movement, deployment, and maintenance of the device. A housing 102 is provided outside the support frame 101 to protect the internal purification system components.

[0030] An electrical control box assembly 90 is installed on the support structure 101. The electrical control box assembly 90 contains a power supply module, a control module, and a human-machine operating system. The power supply module supplies the power required for the entire equipment; the control module adopts a programmable logic controller, which receives sensor signals and controls the operation of the purification system components; the human-machine operating system includes an operation panel, a display screen, start / stop buttons, and an emergency stop button, which facilitates operators to monitor and adjust the operating parameters and working status of the equipment.

[0031] The present invention also includes a first pump assembly 10, such as Figure 3 The first pump unit 10 shown is located at the inlet end of the purification system component and is used to draw the cutting fluid to be purified from the external storage container and deliver it to the purification system component of the equipment. Specifically, the input end of the first pump unit 1 is a pump inlet 11, and the output end is a pump outlet 12. The pump inlet 11 is connected to a quick-connect valve through a pipeline, forming the unit inlet 2 of the equipment; the pump outlet 12 is connected to the tank inlet 56 of the oil filter tank 50 through a pipeline.

[0032] The unit inlet 56 of the equipment is connected to a lifting inlet mechanism 1, which is used to adjust the inlet height of the equipment and supports a variety of different inlet liquid levels to adapt to different liquid storage containers or machine tool liquid tanks.

[0033] The oil filter tank 50 is a component of the purification system used to filter out impurities in the cutting fluid, such as... Figure 4 As shown, the filter tank 50 is internally equipped with a first partition and a second partition, which divide the filter tank 50 into an oil skimming chamber 51, an oil separating chamber 52, and a purification chamber 53. The filter tank inlet of the filter tank 50 is located on the end wall of the oil skimming chamber 51. The cutting fluid to be purified first enters the oil skimming chamber 51 through the oil tank inlet 56. A disc-type oil skimmer 60 is provided at the top of the oil skimming chamber 51, and the disc portion of the disc-type oil skimmer 60 is placed in the oil skimming chamber 51. The first partition between the oil skimming chamber 51 and the purification chamber 53 is provided with a chamber overflow port 54 for communication. The outlet end of the chamber overflow port 54 is located at the upper end of the purification chamber 51, and the inlet end is connected to a pipeline and extends to the lower end of the oil skimming chamber 51.

[0034] Due to the density difference between oil and water, the cutting fluid to be purified will exhibit stratification. Impurities in the oil will rise to the surface due to gravity, forming a floating oil layer, while the cutting fluid will settle at the bottom of the skimming chamber 51. Continuous injection of the cutting fluid will cause the liquid level to rise and gradually submerge the disc portion of the disc skimmer 60. The cutting fluid deposited in the skimming chamber 51 will enter the purification chamber 53 through the overflow port 54 (communicating vessel principle). Simultaneously, the disc skimmer 60 rotates, adsorbing the floating oil and causing it to rotate until the floating oil is scraped off by the built-in scraper plate into the oil outlet trough. The oil outlet trough is located on the second partition between the skimming chamber 51 and the oil separating chamber 52, and is inclined. The floating oil, guided by gravity, falls into the oil separating chamber 52 under the guidance of the oil outlet trough, thus achieving the filtration of impurities.

[0035] like Figure 4 The oil separator 52 shown has an oil overflow port 55 at its upper end, which penetrates the tank end wall of the oil separator 52 to overflow the mixed oil that is full in the oil separator 52 to the outside. An oil storage tank 70 is provided on one side of the oil filter tank 50, and the oil storage tank 70 is located below the outlet end of the oil overflow port 55. It is used to collect and store the mixed oil overflowing from the oil separator 52, which can be further processed for recycling.

[0036] Furthermore, such as Figure 5 The purification chamber 53 shown has a liquid tank outlet 57 and a liquid tank overflow outlet 58 on its end wall. The liquid tank outlet 57 is connected to a second pump unit via piping; the liquid tank overflow outlet 58 is connected to a quick-connect valve via piping, forming the unit overflow outlet 4 of the equipment. The liquid tank overflow outlet 58 is positioned higher than the liquid tank outlet 57, and the liquid phase overflow outlet 58 is lower than the chamber overflow outlet 54. Therefore, when the liquid level in the purification chamber 53 exceeds the safe height, the liquid will be transported through the liquid tank overflow outlet 58 to the unit overflow outlet 4, and then through the unit overflow outlet to an external storage container, preventing equipment overflow failure.

[0037] like Figure 6 The second pump unit 20 shown serves as a secondary delivery device for the unit and is located between the oil filter tank 50 and the filter group 40. The second pump inlet 21 of the second pump unit 20 is connected to the tank outlet 57 of the purification chamber 53, while the second pump outlet 22 is connected to the filter inlet 41 of the filter group 40 via piping. Simultaneously, a liquid level sensor electrically connected to the electrical control assembly 90 is installed in the purification chamber 53. When the liquid level in the purification chamber 53 exceeds a preset level, the second pump unit, driven by the electrical control assembly 90, extracts the cutting fluid from the purification chamber 53 and delivers it to the filter group 40.

[0038] Filter assembly 40 is a purification system component used to filter out impurities from the cutting fluid, such as... Figure 7As shown, the filter assembly 40 is equipped with a filter inlet 41, a filter outlet 42, and a sensor assembly 43. The cutting fluid, after oil filtration, enters the filter assembly 40 through the filter inlet 41. The high-precision filter element built into the filter assembly 40 intercepts metal particles, abrasive particles from grinding wheels, and other impurities carried in the cutting fluid, thus removing them. The sensor assembly 43 monitors the inlet and outlet pressure difference of the filter assembly 40 in real time and feeds it back to the electrical control assembly 90. When the filter element becomes clogged, causing the inlet and outlet pressure difference to exceed the safety threshold, the electrical control assembly 90 triggers an alarm, prompting the operator to replace the filter element promptly to ensure the filtration effect of the filter assembly 40. The cutting fluid filtered by the filter assembly 40 is output through the filter outlet 42 and input into the cavitation deodorizer 80.

[0039] The cavitation deodorizer 80 is a purification system component used to filter out odors from cutting fluid. It is equipped with an ultrasonic device 81, which is directly connected to the filter outlet 42 of the filter assembly 40. The cutting fluid output from the filter assembly 40 is fed into the ultrasonic device 81. The ultrasonic device 81 generates an ultrasonic cavitation effect, which destroys the cell structure of bacteria and fungi in the cutting fluid. At the same time, the high temperature and high pressure released by the cavitation effect eliminate odors in the cutting fluid. This process does not require the addition of bactericides, deodorizers, or other chemical agents, thus avoiding performance degradation and secondary pollution problems caused by the addition of chemical agents. The ultrasonic device 81 is also equipped with an ultrasonic outlet 82, through which the cutting fluid treated by the cavitation deodorizer 80 is output to the subsequent ultraviolet device 30.

[0040] Ultraviolet device 30 Figure 8 As shown, the device is equipped with a liquid inlet 31 and a liquid outlet 32. The liquid inlet 31 is connected to the ultrasonic liquid outlet 82 via a pipe fitting; the liquid outlet 32 ​​is connected to a quick-connect valve via a pipe fitting, forming the unit liquid outlet 3 of the equipment. The ultraviolet device 30 has a built-in ultraviolet lamp, which emits ultraviolet light to further kill residual microorganisms in the cutting fluid, thereby inhibiting the spoilage and deterioration of the cutting fluid and extending its service life. The cutting fluid treated by the ultraviolet device 30 is output through the device outlet 32 ​​to the unit liquid outlet 3, and then flows back to the external storage container through the unit liquid outlet 3, completing a complete purification cycle.

[0041] Example 2: Based on the above-mentioned cutting fluid purification equipment, the purification method is as follows: Liquid Inlet. The first pump unit operates, drawing the cutting fluid to be purified from the external storage container into the first pump unit via a lifting inlet mechanism. After being pressurized by the first pump unit, the cutting fluid enters the skimming chamber of the oil filter tank through the liquid tank inlet.

[0042] Oil filtration. After the purified cutting fluid enters the skimming chamber, it settles and separates into layers in the chamber. Due to density differences, the impurities rise to the surface of the fluid to form a floating oil layer.

[0043] As the cutting fluid to be purified is continuously injected, the fluid level in the skimming chamber gradually rises and submerges the disc of the disc skimmer. The disc skimmer rotates, adsorbing and rotating the floating oil until it is scraped off by the built-in scraper into the oil outlet trough. The floating oil is then guided down into the oil separator chamber. The floating oil in the oil separator chamber overflows into the oil storage tank through the overflow port. Simultaneously, the cutting fluid at the bottom of the skimming chamber enters the purification chamber through the overflow port.

[0044] Delivery. The liquid level sensor in the purification chamber detects the liquid level in the chamber in real time and feeds the liquid level signal back to the electrical control unit.

[0045] When the liquid level in the purification chamber exceeds the preset liquid level threshold in the electrical control unit, the electrical control unit controls the operation of the second pump group; the second pump group draws cutting fluid from the liquid tank outlet of the purification chamber through the second pump inlet and delivers it to the filter group through the second pump outlet.

[0046] When the liquid level in the purification chamber exceeds the safe height, the cutting fluid in the purification chamber is transported to an external storage container through the overflow port of the liquid tank and the overflow port of the unit.

[0047] Filtration. The cutting fluid enters the filter assembly, where the built-in filter element intercepts metal particles and abrasive impurities carried in the fluid. The filtered cutting fluid is then output to the ultrasonic device of the cavitation deodorizer. Simultaneously, the filter assembly's sensor components monitor the inlet and outlet pressure difference in real time and feed the pressure difference signal back to the electrical control unit. When the inlet and outlet pressure difference exceeds a preset safety threshold in the electrical control unit, an alarm is triggered to prompt filter element replacement, ensuring the filter assembly's filtration performance.

[0048] Cavitation deodorization treatment. After the filtered cutting fluid is fed into the ultrasonic device, the electrical control unit controls the operation of the ultrasonic device. The ultrasonic device generates an ultrasonic cavitation effect in the cutting fluid. The high temperature and high pressure released by the cavitation effect destroy the cell structure of bacteria and fungi in the cutting fluid and eliminate the odor in the cutting fluid.

[0049] Ultraviolet (UV) treatment. After cavitation treatment, the cutting fluid is introduced into the UV device. The electrical control unit operates the built-in UV lamps to further kill any remaining bacteria and fungi in the cutting fluid. The purified cutting fluid, after UV sterilization, flows back to an external storage container through the device's outlet and the unit's outlet, completing a full purification cycle.

[0050] In summary, this invention integrates multiple purification functions, including oil filtration, impurity filtration, and antibacterial and deodorizing effects, by combining an oil filter tank, filter assembly, cavitation deodorizer, and ultraviolet light device. This allows for comprehensive purification of cutting fluids, overcoming the limitations of traditional equipment that only performs single-function purification. Furthermore, the equipment utilizes ultrasonic cavitation combined with ultraviolet light for physical sterilization and deodorization, eliminating the need for chemical agents such as bactericides and deodorizers. This avoids the risk of secondary pollution from chemical residues and prevents damage to the cutting fluid's performance, aligning with environmentally friendly production requirements. The purification components are mounted on a caster-equipped support structure, making it a mobile integrated unit. This facilitates convenient on-site deployment and daily maintenance, and the lifting-type fluid inlet mechanism adapts to different machine tool fluid tanks and various fluid level conditions. Therefore, this invention possesses high practical value and broad application prospects.

[0051] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solutions of the present invention are also within the protection scope of the present invention.

Claims

1. A cutting fluid purification device, characterized in that: It includes a support structure (101), and a purification system component is installed on the support structure (101); The purification system components include an oil filter tank (50), a filter group (40), a cavitation deodorizer (80), and an ultraviolet device (30) connected in sequence. The oil filter tank (50) is provided with a first partition and a second partition, and the oil filter tank is divided into an oil skimming chamber (51), an oil separating chamber (52) and a purification chamber (53) by the first partition and the second partition; a disc skimmer (60) is provided at the top of the oil skimming chamber (51), and the oil outlet of the disc skimmer (60) is guided to the oil separating chamber (52). The oil filter tank (50) is connected to the unit inlet (2) and the unit overflow port (4), and the ultraviolet device (30) is connected to the unit outlet (3). The bottom of the support structure (101) is provided with casters (103), and the support structure (101) is fitted with a shell (102). The support structure (101) is also equipped with an electrical box assembly (90) that is electrically connected to the purification system components.

2. The cutting fluid purification equipment according to claim 1, characterized in that: The oil skimming chamber (51) of the oil filter tank (50) is provided with a tank inlet (56), and the oil skimming chamber (51) is provided with a chamber overflow port (54) that connects to the purification chamber (53).

3. The cutting fluid purification equipment according to claim 2, characterized in that: The oil separator (52) of the oil filter tank (50) is provided with an oil overflow port (55) that connects to the outside; an oil storage tank (70) is provided on one side of the oil filter tank (50), and the oil storage tank (70) is located below the outlet end of the oil overflow port (55).

4. The cutting fluid purification equipment according to claim 3, characterized in that: The purification chamber (53) of the oil filter tank (50) is provided with a tank outlet (57) and a tank overflow port (58), and the tank overflow port (58) is connected to the unit overflow port (4) of the equipment consisting of a quick-connect valve. A liquid level sensor is installed in the purification chamber (53).

5. The cutting fluid purification equipment according to claim 4, characterized in that: The oil filter tank (50) is connected to a first pump group (10), and a pump inlet (11) of the first pump group (10) is connected to a quick-connect valve forming the unit inlet (2); a pump outlet (12) of the first pump group (10) is connected to the tank inlet (56) of the oil filter tank (50). The unit's liquid inlet (2) is connected to a lifting liquid inlet mechanism (1).

6. The cutting fluid purification equipment according to claim 5, characterized in that: A second pump group (20) is also provided between the oil filter tank (50) and the filter group (40); the second pump inlet (21) of the second pump group (20) is connected to the tank outlet (57) of the oil filter tank (50); the second pump outlet (22) of the second pump group (20) is connected to the filter inlet (41) of the filter group (40).

7. The cutting fluid purification equipment according to claim 1, characterized in that: The filter assembly (40) has a built-in filter element for filtering out impurities, and the filter assembly (40) is provided with a sensor assembly (43).

8. The cutting fluid purification equipment according to claim 1, characterized in that: The cavitation deodorizer (80) includes an ultrasonic device (81) for generating cavitation effect, and the ultrasonic device (81) is connected to the filter outlet (42) of the filter group (40); the ultrasonic device (81) is provided with an ultrasonic outlet (82), and the ultrasonic outlet (82) is connected to the device inlet (31) of the ultraviolet device (30).

9. The cutting fluid purification equipment according to claim 1, characterized in that: The ultraviolet device (30) has an ultraviolet lamp built in, and the device outlet (32) of the ultraviolet device (30) is connected to the unit outlet (3) of the equipment consisting of quick-connect fittings.

10. A purification method based on the cutting fluid purification equipment according to claims 1-9, characterized in that: Includes the following steps: Step 1: Start the first pump group (10). The first pump group (10) delivers the cutting fluid to be purified through the unit inlet (2) to the skimming chamber (51) of the oil filter tank (10). Step 2: The cutting fluid to be purified separates into layers in the skimming chamber (51), with the impurities rising to form a floating oil layer and the cutting fluid settling at the bottom; the disc skimmer (60) operates, guiding the floating oil to the oil separation chamber (52), and the floating oil in the oil separation chamber (52) overflows into the oil storage tank (70) through the floating oil overflow port (55); at the same time, the cutting fluid settled in the skimming chamber (51) is transported to the purification chamber (53) through the chamber overflow port (54); Step 3: The liquid level sensor in the purification chamber (53) monitors the liquid level. When the liquid level exceeds the threshold, the second pump group (20) starts and delivers the cutting fluid in the purification chamber (53) to the filter group (40). Step 4: After the cutting fluid is input into the filter group (40), the built-in filter element filters out the impurities in the cutting fluid, and the cutting fluid after the impurities are filtered out is output to the cavitation deodorizer (80). Step 5: After the ultrasonic device (81) of the cavitation deodorizer (80) is input into the cutting fluid, the ultrasonic device (81) is activated and generates a cavitation effect, which destroys the cell structure of bacteria and fungi in the cutting fluid and eliminates odor. The treated cutting fluid is then output to the ultraviolet device (30). Step six: After the ultraviolet device (30) inputs the cutting fluid, the ultraviolet lamp built into the ultraviolet device (30) starts and emits ultraviolet light to kill the remaining microorganisms in the cutting fluid. The purified cutting fluid is then output through the unit outlet (3).

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