A cutting fluid management system

Abstract

The present invention discloses a cutting fluid management system, including a liquid supply unit, a liquid return unit, a regeneration unit and a control device. The liquid supply unit includes a liquid supply pump, a liquid supply main pipe and a liquid supply branch pipe, and the cutting fluid is transported to the processing equipment through the liquid supply main pipe and the liquid supply branch pipe; the liquid return unit includes a liquid return main pipe and a liquid return branch pipe, and the liquid return branch pipe is provided with a liquid return tank and a lifting pump, and the used cutting fluid is stored in the liquid return pipe and is transported to the regeneration unit after being pressurized by the lifting pump; the regeneration unit includes a centralized filter, and the used cutting fluid is filtered by the centralized filter to achieve reuse, and the liquid supply pump and the lifting pump in the system are controlled by the control device. The cutting fluid management system provided by the present invention transports the cutting fluid through pipelines, and there is no need to dig the factory floor, and there is no need to reserve space for the ditch when designing the factory, and it has good applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a cutting fluid management system. Background Art

[0002] During the machining process, cutting fluid is sprayed onto the workpiece to flush the workpiece, lubricate the tool, and cool the workpiece. In the prior art, the cutting fluid is discharged from the chip discharge port of the equipment into a trench, where it then flows back into a return tank.

[0003] On the one hand, using trenches to recycle cutting fluid requires digging trenches at the bottom of the factory building, burying the return liquid tank underground, and having a certain slope in the trenches. It is also necessary to set chip flushing ports at certain intervals. This is a large amount of engineering work and will have an impact on the structure of the factory building. The location and depth of the trenches need to be considered at the beginning of the factory building design, and the design requirements are high. On the other hand, the cutting fluid flowing in the trench is easily mixed with dust and other impurities. Since the impurities have a small particle size, they are difficult to filter, resulting in a reduced reuse rate of the cutting fluid.

[0004] Therefore, how to provide a cutting fluid management system with good applicability and high sealing performance is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The object of the present invention is to provide a cutting fluid management system which transports cutting fluid through pipelines without digging trenches and has good applicability and high sealing performance.

[0006] To achieve the above objectives, the present invention provides a cutting fluid management system, comprising:

[0007] A liquid supply unit, comprising a liquid supply pump and a liquid supply main pipe, one end of the liquid supply main pipe being connected to the outlet of the liquid supply pump, and the liquid supply main pipe being connected to a plurality of liquid supply branches for connecting to processing equipment;

[0008] A liquid return unit, comprising a liquid return main pipe and a liquid return branch pipe, one end of the liquid return branch pipe being connected to the processing equipment and the other end being connected to the liquid return main pipe, a liquid return tank for recovering cutting fluid being provided in the liquid return branch pipe, a lift pump being provided at the outlet of the liquid return tank, and the outlet of the lift pump being connected to the liquid return main pipe;

[0009] The filtration unit includes a centralized filter, the liquid return main pipe is connected to the inlet of the centralized filter, and the outlet of the centralized filter is connected to the inlet of the liquid supply pump;

[0010] A control device is connected to the fluid supply pump and the lift pump to control the flow of the cutting fluid.

[0011] Preferably, the liquid supply system further comprises a plurality of liquid supply main pipes, all of which are connected to the liquid supply main pipe, and the liquid supply main pipes are connected to a plurality of liquid supply branch pipes;

[0012] The liquid return unit further comprises a plurality of liquid return main pipes, all of which are connected to the liquid return main pipe, and the liquid return main pipe is connected to a plurality of liquid return branch pipes.

[0013] Preferably, the liquid supply branch pipe is provided with a liquid supply solenoid valve, and the liquid supply solenoid valve is connected to the control device.

[0014] Preferably, the liquid supply branch pipe is further provided with a branch filter, and a ball valve is provided upstream of the branch filter.

[0015] Preferably, the liquid return branch pipe is provided with a one-way valve.

[0016] Preferably, a main pipe reversing valve is provided between the liquid supply main pipe and the liquid return main pipe. When the main pipe reversing valve is in a first valve position, the liquid supply main pipe is disconnected from the liquid return main pipe. When the main pipe reversing valve is in a second valve position, the liquid supply main pipe is connected to the liquid return main pipe.

[0017] Preferably, the regeneration unit further includes a sterilization device and a cutting fluid replenishing device.

[0018] Preferably, a first backwash reversing valve and a second backwash reversing valve are provided in the centralized filter, a backwash inlet pipe is provided on the post-filtration side of the centralized filter, and a backwash outlet pipe is provided on the pre-filtration side, the first valve position of the first backwash reversing valve connects the liquid supply main pipe with the inlet of the centralized filter, the second valve position of the first backwash reversing valve connects the liquid supply main pipe with the backwash inlet pipe, the first valve position of the second backwash reversing valve connects the outlet of the centralized filter with the return liquid main pipe, and the second valve position of the second backwash reversing valve connects the outlet of the centralized filter with the backwash outlet pipe.

[0019] Preferably, the first backwash reversing valve and the second backwash reversing valve are both connected to the control device, and the control device controls the first backwash reversing valve and the second backwash reversing valve to switch to the first valve position or the second valve position synchronously.

[0020] The cutting fluid management system provided by the present invention includes a liquid supply unit, a liquid return unit, a regeneration unit and a control device. The liquid supply unit includes a liquid supply pump and a liquid supply main pipe. One end of the liquid supply main pipe is connected to the outlet of the liquid supply pump, and the liquid supply main pipe is connected to multiple liquid supply branches for connecting processing equipment; the liquid return unit includes a liquid return main pipe and a liquid return branch pipe. One end of the liquid return branch pipe is connected to the processing equipment, and the other end is connected to the liquid return main pipe. A liquid return tank for recovering cutting fluid is provided in the liquid return branch pipe, and a lifting pump is provided at the outlet of the liquid return tank, and the outlet of the lifting pump is connected to the liquid return main pipe; the regeneration unit includes a centralized filter, the liquid return main pipe is connected to the inlet of the centralized filter, and the outlet of the centralized filter is connected to the inlet of the liquid supply pump; the control device is connected to the liquid supply pump and the lifting pump to control the flow of cutting fluid.

[0021] The cutting fluid management system supplies cutting fluid to processing equipment via a main and branch supply pipes. Used cutting fluid is recovered through return pipes and a main return pipe for regeneration and reuse. These return pipes and main return pipe are located above the factory floor, eliminating the need for excavation or reserved trench space during factory design. This reduces the construction workload and design complexity, enhancing its applicability. Furthermore, the cutting fluid flows in a closed pipeline, minimizing contact with air, preventing impurities from entering the fluid, and simplifying regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 This is a structural diagram of the cutting fluid management system provided by the present invention.

[0024] in, Figure 1 The accompanying drawings are:

[0025] Liquid supply pump 1, liquid supply main pipe 2, liquid supply branch pipe 21, liquid supply solenoid valve 22, branch pipe filter 23, ball valve 24, liquid return main pipe 3, liquid return branch pipe 31, liquid return tank 32, lift pump 33, one-way valve 34, main pipe reversing valve 5, processing equipment 6. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Please refer to Figure 1 , Figure 1 This is a structural diagram of the cutting fluid management system provided by the present invention.

[0029] The present invention provides a cutting fluid management system, comprising a fluid supply unit, a fluid return unit, a regeneration unit, and a control device. The fluid supply unit is responsible for delivering cutting fluid to processing equipment 6. Used cutting fluid from each processing equipment 6 is delivered to the regeneration unit via the fluid return unit. The regeneration unit is responsible for processing the used cutting fluid and regenerating it into usable cutting fluid. The control device is responsible for controlling each unit.

[0030] Specifically, the liquid supply unit includes a liquid supply pump 1, a liquid supply main pipe 2, and liquid supply branches 21. The inlet of the liquid supply pump 1 is connected to the regeneration unit, and the outlet is connected to the liquid supply main pipe 2. The liquid supply main pipe 2 is connected to multiple liquid supply branches 21, and the liquid supply branches 21 are connected to each processing equipment 6. The regenerated cutting fluid is pressurized by the liquid supply pump 1 and delivered to each processing equipment 6.

[0031] The liquid return unit includes a main liquid return pipe 3 and a branch liquid return pipe 31. The main liquid return pipe 3 is connected to the regeneration unit. One end of the branch liquid return pipe 31 is connected to the processing equipment 6, and the other end is connected to the main liquid return pipe 3. A liquid return tank 32 is installed in the branch liquid return pipe 31. A lift pump 33 is installed downstream of the liquid return tank 32. The outlet of the liquid return tank 32 is connected to the inlet of the lift pump 33, and the outlet of the lift pump 33 is connected to the main liquid return pipe 3. The liquid return tank 32 is also equipped with a liquid level sensor, which is connected to a control device. When the liquid level in the liquid return tank 32 reaches a preset height, the control device activates the lift pump 33 in this branch to deliver the cutting fluid. The lift pump 33 can be a gear pump, a plunger pump, or the like.

[0032] Optionally, a predetermined distance is provided between the outlet of the return tank 32 and the bottom of the return tank 32. Since the cutting fluid often contains debris generated during machining, the return tank 32 can act as a sedimentation tank, separating the debris from the cutting fluid. During the cutting fluid delivery process, the cutting fluid flows out of the outlet, and the settled debris is stored at the bottom of the return tank 32.

[0033] The regeneration unit includes a centralized filter 4, the return liquid main pipe 3 is connected to the inlet of the centralized filter 4, and the outlet of the centralized filter 4 is connected to the inlet of the liquid supply pump 1; the debris mixed in the cutting fluid is filtered out by the centralized filter 4, so that the filtered cutting fluid meets the requirements of mechanical processing for cutting fluid.

[0034] The control device is also connected to the liquid supply pump 1. Before the processing equipment 6 is started, the control device can start the liquid supply pump 1 to supply cutting fluid to the processing equipment 6. The control device can be specifically a single chip microcomputer, MCU controller, etc.

[0035] In this embodiment, used cutting fluid is transported to the regeneration unit via the return branch pipe 31 and the return main pipe 3 of the return unit. This eliminates the need for pre-designed trenches during factory building design, making the return unit suitable for a variety of factory buildings, thus improving the applicability of the cutting fluid management system. Furthermore, the return unit is equipped with a return tank 32. This serves to store used cutting fluid. Furthermore, used cutting fluid, which contains a high concentration of machining debris, can settle in the return tank 32, achieving solid-liquid separation.

[0036] When the factory building is large and there are many processing equipment 6, the liquid supply unit is only provided with a liquid supply main pipe and a liquid supply branch pipe 21, which cannot meet the demand of supplying cutting fluid to all processing equipment 6. Therefore, the liquid supply system can also include multiple liquid supply main pipes. The regeneration unit can be set on one side of the factory building, and the liquid supply main pipe 2 is set along this side. All liquid supply main pipes are connected to the liquid supply main pipe 2 and extend to the side opposite to the location of the regeneration unit. The liquid supply main pipe is connected to multiple liquid supply branch pipes 21, and the liquid supply branch pipes 21 are connected to each processing equipment 6. Of course, the user can also set the regeneration unit in the center of the factory building or other locations as needed, which is not limited here. Multi-level liquid supply main pipes can be set between the liquid supply main pipe 2 and the liquid supply branch pipes 21.

[0037] Correspondingly, the liquid return unit also includes multiple liquid return main pipes. The liquid return branch pipe 31 transports the used cutting fluid to the liquid return main pipe. All liquid return main pipes are connected to the liquid return main pipe 3. The liquid return main pipe transports the used cutting fluid to the liquid return main pipe 3 and finally returns to the regeneration unit.

[0038] Optionally, the liquid supply unit and liquid return unit can be secured via a beam-structured mounting frame, with square steel or other materials serving as supports fixed to the factory floor. The upper portions of the square steel supports are welded to the longitudinal beams, which can be made of I-beams or angle steel. Crossbeams are also provided between adjacent longitudinal beams, securing the longitudinal beams via the crossbeams to enhance the robustness of the mounting frame. A triangular support frame is also provided on the square steel supports, with its supporting portion being an I-beam perpendicular to the square steel supports. The liquid supply main pipe or liquid return main pipe is secured to the supporting portion via a latch or other means. A horizontally extending support rod is also provided below the triangular support frame, to which the liquid supply branch pipe 21 or liquid return branch pipe 31 is secured.

[0039] Since machining equipment 6 only requires cutting fluid during workpiece machining, the cutting fluid supply can be stopped during machining intervals to reduce machining costs. Therefore, a liquid supply solenoid valve 22 is provided in the liquid supply branch pipe 21. The liquid supply solenoid valve 22 is connected to a control device, which is connected to the control system of the machining equipment 6. The liquid supply solenoid valve 22 can be controlled to open or close based on the operating status of the machining equipment 6. The liquid supply solenoid valve 22 can be specifically a two-position, four-way solenoid valve. When the liquid supply solenoid valve 22 is in the first valve position, the liquid supply branch pipe 21 is disconnected. When the liquid supply solenoid valve 22 is in the second valve position, the liquid supply branch pipe 21 is open.

[0040] To prevent impurities from entering the regenerated cutting fluid and affecting workpiece machining accuracy, the liquid supply branch pipe 21 is equipped with a branch pipe filter 23. This filter is located upstream of the liquid supply solenoid valve 22, and a ball valve 24 is located upstream of the branch pipe filter 23. "Upstream" refers to the direction of the cutting fluid flow. If a malfunction occurs in the branch pipe filter 23 or the liquid supply solenoid valve 22, personnel can manually close the ball valve 24 while repairing or replacing the branch pipe filter 23 or the liquid supply solenoid valve 22.

[0041] Multiple liquid return branches 31 are connected to the liquid return main pipe. In order to prevent the cutting fluid from flowing back to the processing equipment 6 along the liquid return branch 31, the liquid return branch 31 is provided with a one-way valve 34 downstream of the lift pump 33. A manual valve can also be provided downstream of the one-way valve 34. When the one-way valve 34 or the lift pump 33 fails, the manual valve can be closed to isolate the branch so that the staff can repair or replace it.

[0042] In this embodiment, the cutting fluid management system is provided with a liquid supply main pipe and a liquid return main pipe, thereby increasing the number of processing equipment 6 managed by the cutting fluid management system. In addition, both the liquid supply unit and the liquid return unit are fixed by a mounting bracket, and the processing equipment 6 is arranged in the mounting bracket. The liquid supply unit and the liquid return unit form a modular design, which increases the flexibility of the layout of the processing equipment 6 and facilitates the expansion of the factory building and the expansion of the cutting fluid management system. The cutting fluid management system provided by this application is particularly suitable for applications in the consumer electronics processing industry, where processing equipment 6 is relatively densely populated.

[0043] After prolonged use, debris often accumulates in the liquid return unit, causing excessive pressure drop in the liquid return unit and even clogging of the pipeline. Cleaning the liquid return unit requires a lot of manpower and time. In this embodiment, a manifold reversing valve 5 is installed between the liquid supply main pipe 2 and the liquid return main pipe 3 of the centralized filter 4. The manifold reversing valve 5 can connect the liquid supply main pipe 2 and the liquid return main pipe 3. Due to the high pressure of the liquid supply pump 1, the cutting fluid is pressurized by the liquid supply pump 1 to flush the liquid return main pipe 3, which can effectively clear the debris, save a lot of manpower and time, and improve the efficiency of the enterprise.

[0044] Specifically, the manifold reversing valve 5 is connected to a control device that controls the valve position of the manifold reversing valve 5. When the manifold reversing valve 5 is in the first position, the liquid supply manifold 2 is disconnected from the liquid return manifold 3, allowing the liquid supply manifold 2 to supply cutting fluid to the processing equipment 6. When the manifold reversing valve 5 is switched to the second position, the control device stops all lift pumps 33, connecting the liquid supply manifold 2 and the liquid return manifold 3. Cutting fluid flows from the liquid supply manifold 2 into the liquid return manifold 3, flushing debris in the liquid return manifold 3 into the regeneration unit. The manifold reversing valve 5 can be specifically a two-position, four-way solenoid valve.

[0045] In other embodiments, a main pipe reversing valve may also be provided to control the connection or disconnection of the liquid supply main pipe and the liquid return main pipe. When the liquid supply main pipe is connected to the liquid return main pipe, the cutting fluid is used to flush the debris in the liquid return main pipe to avoid blockage of the liquid return main pipe.

[0046] In addition, as the use time increases, the pressure difference on both sides of the centralized filter 4 will gradually increase. In order to avoid excessive pressure difference in the centralized filter 4 and affect the flow of cutting fluid, the centralized filter 4 also has a backwash structure.

[0047] Specifically, the backwash inlet pipe and the first backwash reversing valve are provided on the post-filtration side of the centralized filter 4. When the first backwash reversing valve is in the first valve position, the liquid supply main pipe 2 is connected to the inlet of the centralized filter 4; when the first backwash reversing valve is in the second valve position, the liquid supply main pipe 2 is connected to the backwash inlet pipe. A backwash outlet pipe and a second backwash reversing valve are provided on the pre-filtration side. When the second backwash reversing valve is in the first valve position, the outlet of the centralized filter 4 is connected to the return liquid main pipe 3; when the second backwash reversing valve is in the second valve position, the outlet of the centralized filter 4 is connected to the backwash outlet pipe. Of course, the positions of the first backwash reversing valve and the second backwash reversing valve can be set according to user needs and are not limited here.

[0048] Obviously, when both the first backwash reversing valve and the second backwash reversing valve are in the first valve position, the centralized filter 4 is in a normal filtering state. When both the first backwash reversing valve and the second backwash reversing valve are switched to the second valve position, the cutting fluid enters from the post-filtration side of the centralized filter 4 and is discharged from the pre-filtration side, thereby discharging debris, impurities, etc. accumulated on the pre-filtration side and achieving backwashing of the centralized filter 4.

[0049] The first and second backwash reversing valves are both connected to a control device, whose switching is controlled by the control device. When the centralized filter 4 is backwashing, the control device switches both the main pipe reversing valve 5 and the liquid supply solenoid valve 22 to the first valve position, and simultaneously switches the first and second backwash reversing valves to either the first or second valve positions. At this point, all cutting fluid output from the liquid supply pump 1 flows from the post-filtration side to the pre-filtration side, completing the backwash of the centralized filter 4 through a large pressure differential.

[0050] Optionally, the backwash outlet pipe is also connected to a waste liquid recovery tank. The waste liquid generated by backwashing contains a large amount of impurities. If it is discharged at will, it will cause pollution to the environment. Recycling through the waste liquid recovery tank can prevent the waste liquid from being discharged into the environment, thereby improving the environmental performance of the cutting fluid management system.

[0051] Optionally, the regeneration unit also includes a sterilization device and a cutting fluid replenishing device. Since anaerobic bacteria are easily bred in cutting fluid, the sterilization device can introduce ozone into the cutting fluid to sterilize the cutting fluid. The cutting fluid replenishing device may include a cutting fluid replenishing tank and a cutting fluid replenishing pump. The cutting fluid replenishing tank is filled with a well-proportioned cutting fluid. A liquid level detection device may be provided in the centralized filter 4. The liquid level detection device is connected to the control device. When the cutting fluid level in the centralized filter 4 is low, the control device starts the cutting fluid replenishing pump to replenish the new cutting fluid in the cutting fluid replenishing tank into the cutting fluid control system. The sterilization device and the cutting fluid replenishing device can refer to the existing technology and will not be described in detail here.

[0052] In this embodiment, the cutting fluid control system is equipped with a manifold solenoid valve. The control device controls this valve, connecting the supply manifold 2 with the return manifold 3. This allows cutting fluid to flush the return manifold 3, preventing debris from accumulating there and potentially blocking the system. Furthermore, the centralized filter 4 is equipped with a backwash mechanism. When the pressure differential across the centralized filter 4 is high, the control device activates the backwash mechanism to flush the centralized filter 4. In this embodiment, the cutting fluid control system flushes under the control of the control device, saving manpower and time required for flushing the system and improving enterprise efficiency.

[0053] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0054] The above is a detailed introduction to the cutting fluid management system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that, for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications may be made to the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cutting fluid management system, characterized in that: include: A liquid supply unit, comprising a liquid supply pump (1) and a liquid supply main pipe (2), one end of the liquid supply main pipe (2) being connected to an outlet of the liquid supply pump (1), and the liquid supply main pipe (2) being connected to a plurality of liquid supply branch pipes (21) for connecting to processing equipment (6); A liquid return unit comprises a liquid return main pipe (3) and a liquid return branch pipe (31), wherein one end of the liquid return branch pipe (31) is connected to the processing equipment (6), and the other end is connected to the liquid return main pipe (3), a liquid return tank (32) for recovering cutting fluid is provided in the liquid return branch pipe (31), a lifting pump (33) is provided at the outlet of the liquid return tank (32), and the outlet of the lifting pump (33) is connected to the liquid return main pipe (3); The regeneration unit comprises a centralized filter (4), the liquid return main pipe (3) is connected to the inlet of the centralized filter (4), and the outlet of the centralized filter (4) is connected to the inlet of the liquid supply pump (1); A control device connected to the liquid supply pump (1) and the lift pump (33) to control the flow of cutting fluid; The liquid supply unit further comprises a plurality of liquid supply main pipes, all of which are connected to the liquid supply main pipe (2), and the liquid supply main pipes are connected to a plurality of liquid supply branch pipes (21); The liquid return unit further comprises a plurality of liquid return main pipes, all of which are connected to the liquid return main pipe (3), and the liquid return main pipes are connected to a plurality of liquid return branch pipes (31); The liquid supply unit and the liquid return unit are fixed by a mounting frame of a beam frame structure, the square steel pillar is fixed to the floor of the factory building, the upper part of the square steel pillar is welded to the longitudinal beam, a cross beam is provided between adjacent longitudinal beams, the longitudinal beam is fixed by the cross beam, and the firmness of the mounting frame is increased, a triangular support frame is also provided on the square steel pillar, the supporting part of the triangular support frame is an I-beam perpendicular to the square steel pillar, the liquid supply main pipe or the liquid return main pipe is fixed to the supporting part by a lock, and a support rod extending in the horizontal direction is also provided below the triangular support frame, and the liquid supply branch pipe (21) or the liquid return branch pipe (31) is fixed on the support rod; A main pipe reversing valve (5) is provided between the liquid supply main pipe (2) and the liquid return main pipe (3). The main pipe reversing valve (5) is connected to a control device, and the control device can control the valve position of the main pipe reversing valve (5). When the main pipe reversing valve (5) is located at a first valve position, the liquid supply main pipe (2) is disconnected from the liquid return main pipe (3), and the liquid supply main pipe (2) supplies cutting fluid to the processing equipment (6); when the main pipe reversing valve (5) is located at a second valve position, the control device controls all lift pumps (33) to stop running, the liquid supply main pipe (2) is connected to the liquid return main pipe (3), and the cutting fluid flows from the liquid supply main pipe (2) into the liquid return main pipe (3), flushing the debris in the liquid return main pipe (3) into the regeneration unit; The centralized filter (4) is provided with a first backwash reversing valve and a second backwash reversing valve. A backwash inlet pipe is provided on the rear side of the centralized filter (4), and a backwash outlet pipe is provided on the front side of the centralized filter (4). The first valve position of the first backwash reversing valve connects the liquid supply main pipe (2) with the inlet of the centralized filter (4). The second valve position of the first backwash reversing valve connects the liquid supply main pipe (2) with the backwash inlet pipe. The first valve position of the second backwash reversing valve connects the outlet of the centralized filter (4) with the liquid return main pipe (3). The second valve position of the second backwash reversing valve connects the outlet of the centralized filter (4) with the backwash outlet pipe. The first backwash reversing valve and the second backwash reversing valve are both connected to the control device, and the control device controls the first backwash reversing valve and the second backwash reversing valve to switch to the first valve position or the second valve position synchronously.

2. The cutting fluid management system according to claim 1, characterized in that: The liquid supply branch pipe (21) is provided with a liquid supply solenoid valve (22), and the liquid supply solenoid valve (22) is connected to the control device.

3. The cutting fluid management system according to claim 2, characterized in that: The liquid supply branch pipe (21) is further provided with a branch pipe filter (23), and a ball valve (24) is provided upstream of the branch pipe filter (23).

4. The cutting fluid management system according to claim 3, characterized in that: The liquid return branch pipe (31) is provided with a one-way valve (34).

5. The cutting fluid management system according to any one of claims 1 to 4, wherein the regeneration unit further comprises a sterilization device and a cutting fluid replenishing device.

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