Intelligent centralized processing liquid supply system and method for liquid for machine tool

Abstract

The invention discloses an intelligent centralized treatment liquid supply system for liquid for machine tools, and belongs to the field of centralized liquid supply for liquid for machine tools, the intelligent centralized treatment liquid supply system for liquid for machine tools comprises a paper tape filter and a demulsification and oil removal module, the demulsification and oil removal module comprises a first treatment pond and a second treatment pond, the first treatment pond is used for storing filtrate filtered by the paper tape filter, and the second treatment pond is used for storing filtrate filtered by the paper tape filter; the same cavitation loop is shared; overflow ports are formed in the first treatment tank and the second treatment tank; the floating oil tank is arranged on the overflow port side; the intermediate liquid tank is located on one side of the floating oil tank, and the floating oil tank is provided with a U-shaped pipe communicated with the intermediate liquid tank; a floating oil separation device is connected between the floating oil tank and the intermediate liquid tank; the intermediate liquid tank is respectively provided with a circulation loop connected with the first treatment tank and the second treatment tank; the first treatment tank and the second treatment tank are respectively connected with a machine tool liquid supply pipeline. After machine tool waste liquid is recycled in a centralized mode, two treatment ponds are used for alternate cavitation treatment and multi-stage oil removal, oil removal is thorough, the machine tool liquid recycling rate is high, and normal liquid supply use of a machine tool is not affected.

Description

Technical Field

[0001] The present invention relates to the field of centralized liquid supply for machine tools, and in particular to an intelligent centralized processing and supply system for liquid for machine tools. Background Art

[0002] Currently, large-scale centralized fluid supply projects collect and centrally process machine tool fluids. Treatment of the recovered fluid typically involves filtering for particulate matter, then adjusting the concentration of the filtered treated fluid before returning it to the machine tools for reuse. This is because cutting fluid, after being used by cutting tools, contains not only particulate matter but also a significant amount of impurities such as oil. These impurities can harbor microorganisms. If left untreated for extended periods, the cutting fluid can become smelly and deteriorate. Some factories centrally collect waste fluid from machine tool tanks and purify it through three-phase separation and UV sterilization. Conventional three-phase separation can only remove floating oil from the liquid. For oil-in-water, separation from the liquid system is virtually impossible due to the water crust on the oil's surface, resulting in ineffective purification. During subsequent use, heat from the machining tools often raises the temperature of the machine tool fluid, causing fine particles and impurities in the oil-in-water to precipitate, compromising workpiece surface finish and causing tool wear. Furthermore, traditional treatment methods are complex, require high equipment costs, and fail to fully purify the waste fluid for reuse.

[0003] Typically, the treatment tank is purified by circulating the treatment tank several times until the purification is achieved. If the machine tool uses a large amount of fluid, circulating the treatment tank takes time, making it impossible to ensure the fluid supply to the machine tool. Staggering the treatment tank purification and the machine tool fluid supply will affect the machine tool's production efficiency and result in inadequate purification. Summary of the Invention

[0004] In order to solve the above-mentioned problems of the existing centralized liquid supply for machine tool liquid purification treatment, the present invention provides an intelligent centralized liquid supply system for machine tool liquid, which can centrally recover machine tool waste liquid, remove oil through multi-stage demulsification, and use two treatment pools for alternating cavitation treatment, which is carried out synchronously with the machine tool liquid supply without affecting the normal use of the machine tool; and the oil removal is thorough, and the reuse rate of machine tool liquid is high.

[0005] Based on the above problems, the solution is as follows:

[0006] The intelligent centralized processing and supply system for machine tool fluid includes a paper belt filter connected to a machine tool group and used to receive machine tool fluid discharged from the machine tool group; the centralized processing and supply system also includes a demulsification and oil removal module, which includes:

[0007] The first treatment tank and the second treatment tank are used to store the filtrate filtered by the paper belt filter;

[0008] a cavitation circuit, wherein the liquid inlet of the cavitation circuit is connected to the first treatment tank and the second treatment tank respectively through valves, and the liquid outlet of the cavitation circuit is connected to the first treatment tank and the second treatment tank respectively through valves;

[0009] The first treatment tank and the second treatment tank are both provided with overflow ports;

[0010] An oil floating tank is provided on the overflow port side;

[0011] An intermediate liquid tank is located on one side of the oil floating tank, and the oil floating tank is provided with a U-shaped pipe connected to the intermediate liquid tank;

[0012] An oil floating separation device is connected between the oil floating tank and the intermediate liquid tank; the intermediate liquid tank is provided with a circulation loop connected to the first treatment tank and the second treatment tank; the first treatment tank and the second treatment tank are respectively connected to the machine tool liquid supply pipeline.

[0013] An oil separation device is connected between the oil floating tank and the intermediate liquid tank to further separate the floating oil in the oil floating tank into oil and liquid, so that the oil removal is more thorough and the recovery rate of the machine tool liquid is high.

[0014] Preferably, the cavitation circuit is provided with a high-pressure pump and a cavitation generator in sequence; the cavitation generator includes a container with an inner diameter decreasing from top to bottom, a liquid inlet pipe arranged tangentially to the outer circumference of the container, and a liquid outlet pipe inserted into the interior of the container; the high-pressure pump is connected to the two liquid inlet pipes; the high-pressure pump is connected to the first treatment tank and the second treatment tank through a first valve and a second valve respectively; the liquid outlet pipe of the cavitation generator is connected to the first treatment tank and the second treatment tank through a third valve and a fourth valve respectively.

[0015] The first treatment tank and the second treatment tank are respectively connected to the same cavitation circuit. Through valve switching, the two treatment tanks perform cavitation treatment alternately, which improves the treatment efficiency and does not affect the fluid supply of the machine tool.

[0016] The high pressure, shock waves and microjets generated by hydrodynamic cavitation squeeze or impact the oil-water interface film, destroying it and breaking the oil-in-water system. The locally generated high temperature also helps to break the emulsion. During the hydrodynamic cavitation process, microbubbles are generated and grow, and the dispersed tiny oil droplets gather again with the tiny bubbles as carriers and float up with the rapid rise of the microbubbles, thus achieving rapid removal of the oil-in-water system.

[0017] Preferably, the paper belt filter is provided with liquid inlets leading to the first treatment tank and the second treatment tank respectively; and liquid inlet valves are respectively provided before the liquid inlets.

[0018] Preferably, the floating oil separation device is provided with a floating liquid suction port, which is located in the floating oil tank; the floating oil separation device is provided with a liquid discharge port, which is connected to the intermediate liquid tank.

[0019] The floating oil in the upper layer of the floating oil tank is pumped to the floating oil separation device by using a floating liquid suction port for further oil-liquid separation. The floating oil is further concentrated and the liquid is then introduced into the intermediate liquid tank, thereby improving the reuse rate of the machine tool liquid.

[0020] Preferably, the first treatment tank, the second treatment tank, the floating oil tank and the intermediate liquid tank are all provided with liquid level gauges.

[0021] Preferably, a pressure pump is provided on the circulation loop, and the pressure pump is connected to the first treatment tank and the second treatment tank via a fifth valve and a sixth valve respectively.

[0022] Preferably, the machine tool liquid supply pipeline is provided with a liquid supply pump group, and liquid outlet valves are respectively provided between the first treatment tank, the second treatment tank and the liquid supply pump group.

[0023] Preferably, the liquid supply pump group includes a first pump and a second pump, and valves are provided before and after the first pump and the second pump.

[0024] The liquid supply pump group has one backup and one backup, and valves are set before and after the pumps, which makes it more convenient to repair the faulty pump without affecting the normal liquid supply of the machine tool.

[0025] The present invention also provides a method for intelligent centralized processing and supplying of machine tool fluid, which uses the intelligent centralized processing and supply system for machine tool fluid, and the method includes the following steps:

[0026] S1, the cutting fluid collected from the machine tool group is filtered by a paper belt filter and then introduced into the first treatment tank to fill the first treatment tank;

[0027] S2. Cavitation treatment is performed on the first treatment tank; the cavitation treatment breaks up the oil in water, and the floating oil and fine particles float on the surface of the liquid, and the floating oil with liquid overflows into the floating oil tank; the first treatment tank is continuously filled with liquid, and the floating oil with liquid continuously overflows into the floating oil tank;

[0028] S3, there is oil stratification in the oil floating tank, the bottom liquid is introduced into the middle liquid tank, and the floating oil on the upper layer of the oil floating tank is retained in the oil floating tank;

[0029] S4. The floating oil in the floating oil tank is pumped away by the floating oil separator for further oil-liquid separation; the concentrated oil separated by the floating oil separator is pumped into the concentrated oil collection tank for collection; the intermediate liquid separated by the floating oil separator is pumped into the intermediate liquid tank again;

[0030] S5. When the liquid level in the intermediate liquid tank reaches a certain level, the liquid in the intermediate liquid tank is pumped back to the first treatment tank. After multiple cavitation treatments, the floating oil on the first treatment tank is very little or close to zero, and the cavitation treatment is stopped.

[0031] Furthermore, when the first treatment tank performs steps S2 to S5, the liquid inlet valve is switched from the first treatment tank to the second treatment tank to replenish the liquid in the second treatment tank.

[0032] Furthermore, after the first treatment pool is subjected to multiple cavitation treatments, the first valve and the third valve of the cavitation circuit are connected, and then the second valve and the fourth valve are switched, and the second treatment pool is then subjected to cavitation treatment; the second treatment pool performs steps S2 to S5.

[0033] Furthermore, when the second treatment tank is subjected to cavitation treatment, the liquid outlet valve of the first treatment tank is opened to supply liquid to the machine tool group;

[0034] Alternatively, when the second treatment pool is subjected to cavitation treatment, concentration matching is performed on the first treatment pool, and after the matching is completed, liquid is supplied to the machine tool group.

[0035] Compared with the prior art, the beneficial technical effects of the present invention are:

[0036] 1. The two treatment pools perform cavitation treatment and degreasing treatment alternately. When one treatment pool is cavitating, the other treatment pool replenishes liquid or supplies liquid to the machine tool group. This reduces the waiting time for replenishing or supplying liquid due to cavitation, improves the cavitation treatment efficiency, and does not affect the normal use of the machine tool, ensuring the liquid usage of the machine tool water tank.

[0037] 2. After cavitation treatment, floating oil and fine particles overflow into the floating oil tank, and then are pumped from the floating oil tank to the floating oil separation device through the floating liquid suction port for filtration, further oil-liquid separation, and further concentration of the floating oil, thereby improving the recovery rate of useful components in the machine tool fluid.

[0038] 3. Use a liquid supply pump group to supply liquid to the machine tool. One liquid supply pump is in standby mode and the other is in use. When one pump fails, the other pump works normally to ensure the stable operation of the machine tool liquid supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the system flow of the processing system of the present invention.

[0040] Figure 2 This is a flow chart of the oil floating separation device.

[0041] Figure 3 1 is a top view system flow diagram of the processing system of the present invention.

[0042] In the figure: first treatment tank 10, liquid inlet valve 100, liquid outlet valve 101, second treatment tank 11, liquid inlet valve 110, liquid outlet valve 111, paper belt filter 2, liquid inlet 20, liquid inlet 21, liquid inlet pump 23, cavitation circuit 3, high-pressure pump 30, cavitation generator 31, liquid inlet pipe 310, liquid outlet pipe 311, container 313, first valve 32, second valve 33, third valve 34, fourth valve 35, oil floating tank 4, overflow port 40, partition 41, intermediate liquid tank 5, U shaped tube 50, floating oil separation device 6, floating liquid suction port 60, filter 61, pump 62, packing layer 63, lead-out pipe 64, concentrated oil collection barrel 65, drain port 66, circulation loop 7, pressure pump 70, fifth valve 71, sixth valve 72, machine tool liquid supply pipeline 8, liquid supply pump group 80, first pump 801, second pump 802, liquid level meter 9, machine tool group 12, concentration detection system 13, raw liquid input pipeline 130, tap water input pipeline 131, detection loop 132. DETAILED DESCRIPTION

[0043] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0044] like Figure 1 、 Figure 3 As shown, the intelligent centralized processing and supply system for machine tool liquid includes a first treatment tank 10, a second treatment tank 11, and a paper belt filter 2. The machine tool group 12 is connected to the paper belt filter 2 through a pipeline. A liquid inlet pump 23 is provided between the machine tool group 2 and the paper belt filter 2. The paper belt filter 2 is provided with a liquid inlet 20 and a liquid inlet 21 leading to the first treatment tank 10 and the second treatment tank 11 respectively. A liquid inlet valve 100 and a liquid inlet valve 110 are provided between the liquid inlet 20 and the liquid inlet 21 and the paper belt filter 2 respectively. The filtrate filtered by the paper belt filter enters the first treatment tank 10 and the second treatment tank 11.

[0045] like Figure 1 、 Figure 3 As shown, the intelligent centralized processing and supply system for machine tool liquid also includes a cavitation circuit 3, on which a high-pressure pump 30 and a cavitation generator 31 are sequentially provided. The cavitation generator 31 includes a container 313 with an inner diameter that decreases from top to bottom, two liquid inlet pipes 310 arranged tangentially to the outer periphery of the container, and a liquid outlet pipe 311 inserted into the container. The high-pressure pump 30 is connected to the two liquid inlet pipes 310, and a first valve 32 and a second valve 33 are respectively connected between the high-pressure pump 30 and the first treatment tank 10 and the second treatment tank 11; a third valve 34 and a fourth valve 35 are connected between the liquid outlet pipe 311 of the cavitation generator and the first treatment tank 10 and the second treatment tank 11.

[0046] like Figure 1 The first treatment tank 10 and the second treatment tank 11 are both provided with an overflow port 40, and an oil floating tank 4 is provided on the overflow port side. Figure 2As shown, an intermediate liquid tank 5 is provided on one side of the oil floating tank 4, a partition 41 is provided between the oil floating tank 4 and the intermediate liquid tank 5, and the oil floating tank 4 is further provided with a U-shaped tube 50 connected to the intermediate liquid tank 5, and the height of the U-shaped tube is lower than the height of the partition 41.

[0047] like Figure 1 Outside the oil floating tank 4 and the intermediate liquid tank 5, an oil floating separation device 6 is connected between the oil floating tank 4 and the intermediate liquid tank 5. The oil floating separation device is provided with a floating liquid suction port 60, which is arranged on the liquid surface of the oil floating tank.

[0048] like Figure 2 As shown, the floating oil separator 6 is internally equipped with a filter 61, a pump 62, a packing layer 63, a discharge pipe 64, a concentrated oil collection tank 65, and a drain port 66. The floating oil separator uses the pump 62 to remove floating oil from the surface of the floating oil tank. Fine particulate impurities are filtered out through the filter 61. The floating oil is further separated by the baffles and packing layer 63 within the floating oil separator. The floating oil rises and overflows into the concentrated oil tank, where it is introduced into the concentrated oil collection tank 65. The separated liquid flows through the discharge pipe 64 to the intermediate liquid collection tank. Then, due to the height difference between the drain port 66 of the intermediate liquid collection tank and the intermediate liquid tank 5, it flows into the intermediate liquid tank 5.

[0049] The floating liquid suction port 60 absorbs the floating oil on the upper layer of the oil floating tank, and at the same time lowers the liquid level of the oil floating tank, so that a liquid level height difference is formed among the first treatment tank, the second treatment tank and the oil floating tank, and the floating oil in the treatment tank continuously overflows into the oil floating tank.

[0050] like Figure 1 Liquid level gauges are provided in the first treatment tank 10 , the second treatment tank 11 , the floating oil tank 4 , and the intermediate liquid tank 5 .

[0051] like Figure 1 、 Figure 3 As shown, the intermediate liquid tank 5 is provided with a circulation loop 7 connected to the first treatment tank 10 and the second treatment tank 11, and a pressure pump 70 is provided on the circulation loop. The pressure pump 70 is connected to the first treatment tank 10 and the second treatment tank 11 through a fifth valve 71 and a sixth valve 72 respectively.

[0052] The liquid obtained by further separation of the floating oil separation device flows into the intermediate liquid tank again, causing the liquid level of the intermediate liquid tank to rise. The intermediate liquid is then pumped to the first treatment tank or the second treatment tank through a circulation loop, which not only replenishes the liquid level lost due to overflow of the treatment tank, but also further cavitates the intermediate liquid after oil removal, making it more thoroughly purified.

[0053] like Figure 1 、 Figure 3As shown, the first treatment tank 10 and the second treatment tank 11 are respectively connected to the machine tool liquid supply pipeline 8, and the machine tool liquid supply pipeline 8 is connected to the machine tool group 12. The machine tool liquid supply pipeline 8 is equipped with a liquid supply pump group 80. The first treatment tank 10 and the second treatment tank 11 are respectively equipped with liquid outlet valves 101 and liquid outlet valves 111 that flow into the liquid supply pump group. The liquid supply pump group includes a first pump 801 and a second pump 802, and valves are installed before and after the first pump 801 and the second pump 802.

[0054] The liquid supply pump group is equipped with a first pump and a second pump. If one pump fails, the other pump can be used as a backup. Valves are installed before and after the first and second pumps. If one pump fails, the valves before and after the pump can be closed to repair the pump. When repairing one pump, it will not affect the other pump's supply of liquid to the machine tool.

[0055] like Figure 1 The first treatment tank 10 and the second treatment tank 11 are respectively connected to the concentration proportioning system 13, and the concentration proportioning system 13 includes a raw liquid input pipeline 130 and a tap water input pipeline 131. The first treatment tank 10 and the second treatment tank 11 are also respectively connected to a detection circuit 132, and a circulation pump and a concentration detection device are sequentially provided on the detection circuit.

[0056] The treated liquid in the first and second treatment tanks, which has undergone multiple cavitation treatments and multi-stage oil removal, is then proportioned to a predetermined concentration so as to be supplied to the machine tool.

[0057] The present invention further provides a method for purifying machine tool fluid, which uses the above-mentioned intelligent centralized processing and supply system for machine tool fluid. The method includes the following steps:

[0058] S1, the cutting fluid collected from the machine tool group is filtered by a paper belt filter and then introduced into the first treatment tank to fill the first treatment tank;

[0059] S2. Cavitation treatment is performed on the first treatment tank; the cavitation treatment breaks up the oil in water, and the floating oil and fine particles float on the surface of the liquid, and the floating oil with liquid overflows into the floating oil tank; the first treatment tank is continuously filled with liquid, and the floating oil with liquid continuously overflows into the floating oil tank;

[0060] S3, there is oil stratification in the oil floating tank, the bottom liquid is introduced into the middle liquid tank, and the floating oil on the upper layer of the oil floating tank is retained in the oil floating tank;

[0061] S4. The floating oil in the floating oil tank is pumped away by the floating oil separator for further oil-liquid separation; the concentrated oil separated by the floating oil separator is pumped into the concentrated oil collection tank for collection; the intermediate liquid separated by the floating oil separator is pumped into the intermediate liquid tank again;

[0062] S5. When the liquid level in the intermediate liquid tank reaches a certain level, the liquid in the intermediate liquid tank is pumped back to the first treatment tank. After multiple cavitation treatments, the floating oil on the first treatment tank is very little or close to zero, and the cavitation treatment is stopped.

[0063] When performing steps S2 to S5 on the first treatment pool 10, the liquid inlet valve 100 is closed, the liquid inlet valve 110 is opened, and the valve is switched from the first treatment pool to the second treatment pool to replenish the liquid in the second treatment pool.

[0064] After the cavitation treatment of the first treatment pool 10 times is completed, the first valve 32 and the third valve 34 connected to the cavitation circuit are closed, the second valve 33 and the fourth valve 35 are opened, and the second treatment pool 11 is then cavitated; the second treatment pool performs steps S2 to S5.

[0065] When the second treatment tank 11 is subjected to cavitation treatment, the liquid outlet valve 101 of the first treatment tank is opened to supply liquid to the machine tool group.

[0066] Alternatively, when the second treatment tank 11 is subjected to cavitation treatment, the first treatment tank 10 is subjected to concentration matching, and after the matching is completed, liquid is supplied to the machine tool group.

[0067] The two treatment pools perform cavitation treatment and oil removal treatment alternately. When one pool is purifying, the other pool replenishes liquid or supplies liquid to the machine tool group, which improves the cavitation treatment efficiency without affecting the normal operation of the machine tool and ensures the liquid usage of the machine tool water tank.

[0068] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention to solve substantially the same technical problems and achieve substantially the same technical effects are all included in the scope of protection of the present invention.

Claims

1. An intelligent centralized processing and supply system for machine tool fluids, comprising a paper belt filter connected to a machine tool group and configured to receive machine tool fluids discharged from the machine tool group; characterized in that: The centralized processing liquid supply system also includes a demulsification and oil removal module, which includes: The first treatment tank and the second treatment tank are used to store the filtrate filtered by the paper belt filter; a cavitation circuit, wherein the liquid inlet of the cavitation circuit is connected to the first treatment tank and the second treatment tank respectively through valves, and the liquid outlet of the cavitation circuit is connected to the first treatment tank and the second treatment tank respectively through valves; The first treatment tank and the second treatment tank are both provided with overflow ports; An oil floating tank is provided on the overflow port side; An intermediate liquid tank is located on one side of the oil floating tank, and the oil floating tank is provided with a U-shaped pipe connected to the intermediate liquid tank; An oil floating separation device is connected between the oil floating tank and the intermediate liquid tank; the intermediate liquid tank is provided with a circulation loop connected to the first treatment tank and the second treatment tank; the first treatment tank and the second treatment tank are respectively connected to the machine tool liquid supply pipeline.

2. The intelligent centralized processing and supply system for machine tool fluid according to claim 1, characterized in that: The cavitation circuit is provided with a high-pressure pump and a cavitation generator in sequence; the cavitation generator includes a container with an inner diameter decreasing from top to bottom, a liquid inlet pipe arranged tangentially to the outer circumference of the container, and a liquid outlet pipe inserted into the interior of the container; the high-pressure pump is connected to the two liquid inlet pipes; the high-pressure pump is connected to the first treatment tank and the second treatment tank through a first valve and a second valve respectively; the liquid outlet pipe of the cavitation generator is connected to the first treatment tank and the second treatment tank through a third valve and a fourth valve respectively.

3. The intelligent centralized processing and supply system for machine tool fluid according to claim 1, characterized in that: The paper belt filter is provided with liquid inlets leading to the first treatment tank and the second treatment tank respectively; and liquid inlet valves are provided between the paper belt filter and the liquid inlets respectively.

4. The intelligent centralized processing and supply system for machine tool fluids according to claim 1, characterized in that: The floating oil separation device is provided with a floating liquid suction port, and the floating liquid suction port is located in the floating oil tank; the floating oil separation device is provided with a liquid discharge port, and the liquid discharge port is connected to the intermediate liquid tank.

5. The intelligent centralized processing and supply system for machine tool fluid according to claim 1, characterized in that: The first treatment tank, the second treatment tank, the floating oil tank and the intermediate liquid tank are all provided with liquid level gauges.

6. The intelligent centralized processing and supply system for machine tool fluid according to claim 1, characterized in that: A pressure pump is provided on the circulation loop, and a fifth valve and a sixth valve are connected between the pressure pump and the first treatment tank and the second treatment tank respectively.

7. The intelligent centralized processing and supply system for machine tool fluids according to claim 1, characterized in that: The machine tool liquid supply pipeline is connected to the liquid supply pump group, and liquid outlet valves are respectively provided between the first processing tank, the second processing tank and the liquid supply pump group.

8. The intelligent centralized processing and supply system for machine tool fluid according to claim 7, characterized in that: The liquid supply pump group is provided with a first pump and a second pump, and valves are provided before and after the first pump and the second pump.

9. Intelligent centralized processing and supply method for machine tool fluid, characterized in that: The intelligent centralized processing and supply system for machine tool fluid according to any one of claims 1 to 8 is applied, and the method comprises the following steps: S1, the cutting fluid collected from the machine tool group is filtered by a paper belt filter and then introduced into the first treatment tank to fill the first treatment tank; S2. Cavitation treatment is performed on the first treatment tank; the cavitation treatment breaks up the oil in water, and the floating oil and fine particles float on the surface of the liquid, and the floating oil with liquid overflows into the floating oil tank; the first treatment tank is continuously filled with liquid, and the floating oil with liquid continuously overflows into the floating oil tank; S3, there is oil stratification in the oil floating tank, the bottom liquid is introduced into the middle liquid tank, and the floating oil on the upper layer of the oil floating tank is retained in the oil floating tank; S4. The floating oil in the floating oil tank is pumped away by the floating oil separator for further oil-liquid separation; the concentrated oil separated by the floating oil separator is pumped into the concentrated oil collection tank for collection; the intermediate liquid separated by the floating oil separator is pumped into the intermediate liquid tank again; S5. When the liquid level in the intermediate tank reaches a certain level, the liquid in the intermediate tank is pumped back to the first treatment tank. After multiple cavitation treatments, the floating oil on the first treatment tank is very little or close to zero, and the cavitation treatment is stopped.

10. The intelligent centralized processing and supply method for machine tool fluid according to claim 9, characterized in that: When the first treatment pool is performing steps S2 to S5, the liquid inlet valve is switched from the first treatment pool to the second treatment pool to replenish the liquid in the second treatment pool.

11. The intelligent centralized processing and supply method for machine tool fluid according to claim 10, characterized in that: After multiple cavitation treatments are completed on the first treatment pool, the first valve and the third valve of the cavitation circuit are connected, and then the second valve and the fourth valve are switched to perform cavitation treatment on the second treatment pool; the second treatment pool performs steps S2 to S5.

12. The intelligent centralized processing and supply method for machine tool fluid according to claim 11, characterized in that: When the second treatment tank is subjected to cavitation treatment, the liquid outlet valve of the first treatment tank is opened to supply liquid to the machine tool group; Alternatively, when the second treatment tank is subjected to cavitation treatment, the treatment liquid in the first treatment tank is subjected to concentration proportioning, and after the proportioning is completed, the liquid is supplied to the machine tool group.

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