A filtering cooling system and machine tool

Abstract

The application provides a filtering cooling system and a machine tool, and the filtering cooling system comprises a first water tank, a second water tank, a first water pump, a centrifugal machine, a cutting fluid cooling machine, a second water pump, a first pipeline, a second pipeline and a spraying device; a filtering basket is arranged on the first water tank, the first water pump is arranged on the first water tank, and the first water pump is connected with the centrifugal machine through the first pipeline; the outlet of the centrifugal machine is communicated with the second water tank, the heat exchange end of the cutting fluid cooling machine is located in the second water tank, the input end of the second water pump is communicated with the second water tank, and the output end of the second water pump is connected with the spraying device through the second pipeline. The filtering cooling system of the application physically integrates and logically links components such as the first water tank, the second water tank, the centrifugal machine and the cutting fluid cooling machine, realizes an efficient multi-stage filtering and cooling integrated architecture, has reasonable layout, can effectively reduce energy loss, optimizes the space utilization rate of the machine tool, and is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of machine tools, and more specifically, to a filtration and cooling system and a machine tool. Background Technology

[0002] In the field of machine tool processing, efficient filtration and precise temperature control of cutting fluid are key to ensuring machining accuracy and extending tool life. With the continuous development of precision machining and high-speed cutting technologies, the forms of chips generated during machining are becoming more diverse, such as large metal fragments, fine powders, and oil-stain mixtures, which place higher demands on the filtration efficiency and temperature stability of machine tools.

[0003] Traditional machine tool filtration systems, such as oil-water separation filtration systems or conventional filter tanks, are ineffective at filtering tiny particles generated during processing and often lack active temperature control modules, resulting in unstable cooling performance. Existing machine tools have been improved through multi-stage filtration or external cooling equipment; however, these solutions often have several drawbacks. For example, filtration equipment, cooling equipment, and water tanks are often independent modules, with dispersed components, complex piping connections, and large space requirements. Furthermore, filtration and cooling have poor coordination; the cooling equipment struggles to match the dynamic processing rhythm of the filtration equipment, lacks closed-loop control of filtration efficiency, liquid level, and temperature, and cannot adjust parameters in real time according to processing conditions. Utility Model Content

[0004] The embodiments of this application aim to solve at least one of the problems of existing technologies. The embodiments of this application provide a filtration cooling system and a machine tool. The filtration cooling system physically integrates and logically links components such as a primary water tank, a secondary water tank, a centrifuge, and a cutting fluid cooler, achieving a highly efficient multi-stage filtration and cooling integrated architecture. Its layout is reasonable, effectively reducing energy loss, optimizing machine tool space utilization, and facilitating maintenance. Through devices such as liquid level sensors, temperature sensors, and flow regulating valves, it matches the processing load in real time, achieving closed-loop control of centrifuge speed, cooler power, and water pump flow. The water distribution component supports independent adjustment of multiple branches to adapt to the cooling needs of different processing positions.

[0005] The relevant technical solutions of the embodiments of this application include the following:

[0006] A first aspect of the embodiments of this application provides a filtration and cooling system, comprising: a primary water tank, a secondary water tank, a first water pump, a centrifuge, a cutting fluid cooler, a second water pump, a first pipeline, a second pipeline, and a spraying device; a filter basket is provided on the primary water tank, the first water pump is disposed on the primary water tank, and the first water pump is connected to the centrifuge through the first pipeline; the centrifuge and the cutting fluid cooler are disposed on the secondary water tank, the outlet of the centrifuge is connected to the secondary water tank, the heat exchange end of the cutting fluid cooler is located inside the secondary water tank, the input end of the second water pump is connected to the secondary water tank, and the output end of the second water pump is connected to the spraying device through the second pipeline.

[0007] Optionally, the filter basket is located in the middle above the primary water tank, and a debris collection basket is provided inside the filter basket. Multiple flow holes are evenly arranged at the bottom of the debris collection basket, and a first-stage filter screen is fixedly installed above the flow holes.

[0008] Optionally, the bottom of the filter basket is a mesh structure, and a second-stage filter screen is fixedly installed above the mesh structure, wherein the pore size of the second-stage filter screen is smaller than that of the first-stage filter screen.

[0009] The chip collection basket includes two, and a flow channel is formed between the two chip collection baskets and the filter basket, as well as between the two chip collection baskets.

[0010] Optionally, the first water pump is a centrifugal water supply pump. The first water pump includes an inlet end extending into the interior of the primary water tank. The bottom of the inlet end is close to the bottom of the primary water tank. A water level sensing device is installed inside the inlet end. Multiple water inlets are evenly arranged at the lower part of the inlet end.

[0011] The second water pump is located on one side of the secondary water tank, and the input end of the second water pump is connected to the secondary water tank through a water supply pipe.

[0012] Optionally, the first pipeline is equipped with a flow regulating valve and a pressure sensor. The flow regulating valve is located on the section of the first pipeline near the first water pump, and the pressure sensor is located on the section of the pipeline between the flow regulating valve and the centrifuge. The detection data from the flow regulating valve and / or the pressure sensor is used to control the rotational speed of the first water pump.

[0013] Optionally, the centrifuge includes a centrifuge body, a centrifuge motor and a centrifuge control cabinet disposed on the upper end of the centrifuge body, a sensing device for sensing the liquid level inside the centrifuge body is disposed on the side wall of the centrifuge body, and a buffer device is disposed at the bottom of the centrifuge body.

[0014] Optionally, the secondary water tank is equipped with a liquid level sensor and a temperature sensor. The liquid level sensor is connected to the control circuit of the first water pump, and the temperature sensor is connected to the control circuit of the cutting fluid cooler.

[0015] Optionally, the output end of the second pipeline is connected to a head water distribution assembly. The head water distribution assembly includes a main branch pipe and multiple parallel branch pipes. The main branch pipe is connected to the second pipeline, and the outlet end of each branch pipe is connected to the spraying device. Each branch pipe is equipped with a flow regulating valve.

[0016] A second aspect of this application provides a machine tool, the machine tool including a body, a spindle and a worktable disposed on the body, a cutting tool disposed on the spindle, and a chip removal channel disposed below the worktable, characterized in that it further includes a filtration and cooling system as described in one of the aforementioned embodiments, the machine head water distribution assembly being connected to the spindle, the spraying device being disposed around the outer periphery of the cutting tool, and the chip removal channel outlet leading to the primary water tank.

[0017] Optionally, the machine tool further includes a controller, and a control valve is also provided on the second pipeline. The control valve is connected to the controller and is used to control the flow rate of the second pipeline.

[0018] The primary water tank and the secondary water tank are separately configured, with the primary water tank and the secondary water tank located on opposite sides of the main body.

[0019] The technical solution regarding the processing head in this application embodiment has at least the following technical effects:

[0020] The filtration and cooling system provided in this embodiment physically integrates and logically links components such as a primary water tank, a secondary water tank, a centrifuge, and a cutting fluid cooler, achieving a highly efficient multi-stage filtration and cooling integrated architecture. Its layout is reasonable, effectively reducing energy loss, optimizing machine tool space utilization, and facilitating maintenance. Through devices such as liquid level sensors, temperature sensors, and flow regulating valves, it matches the processing load in real time, realizing closed-loop control of centrifuge speed, cooler power, and water pump flow. The water distribution component supports independent adjustment of multiple branches to adapt to the cooling needs of different processing positions.

[0021] It is easy to understand that the relevant technical solutions of the machine tool in the embodiments of this application have at least the corresponding technical effects of the technical solutions of the machine tool body, which will not be elaborated here. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the filtration and cooling system in the embodiments of this application;

[0023] Figure 2This is a top view of the primary water tank in an embodiment of this application;

[0024] Figure 3 This is a bottom view of the filter basket in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the centrifuge structure in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the structure of the secondary water tank, centrifuge, cutting fluid cooler, second water pump, second pipeline, spraying device, water supply pipeline, etc. in the embodiments of this application.

[0027] The attached figures are labeled as follows:

[0028] 1- Primary water tank, 2- Secondary water tank, 3- First water pump, 4- Centrifuge, 5- Cutting fluid cooler, 6- Second water pump, 7- First pipeline, 8- Second pipeline, 9- Filter basket, 10- Spraying device, 11- Water supply pipeline

[0029] 31-Water inlet end, 32-Water inlet, 41-Centrifuge body, 42-Centrifuge motor, 43-Centrifuge control cabinet, 71-Flow regulating valve, 81-Head water distribution assembly, 91-Scrap basket, 92-Flow channel

[0030] 811-Main branch pipe, 812-Branch branch pipe, 911-Flow hole Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0032] It should be noted that in the description of this application, the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" and "second" may explicitly or implicitly include one or more features.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection or a connection that allows communication between the two; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements, an indirect connection, or an interaction between two elements.

[0036] The following disclosure provides many different implementation methods or examples for different schemes of implementing this application.

[0037] like Figures 1 to 5 As shown, a first aspect of this application provides a filtration cooling system. As... Figure 1As shown, the filtration and cooling system includes a primary water tank 1, a secondary water tank 2, a first water pump 3, a centrifuge 4, a cutting fluid cooler 5, a second water pump 6, a first pipeline 7, a second pipeline 8, and a spraying device 10. The primary water tank 1 is equipped with a filter basket 9. Untreated cutting fluid first undergoes preliminary filtration through the filter basket 9. The pre-filtered cutting fluid is temporarily stored in the primary water tank 1. Particles in the pre-filtered cutting fluid settle within the primary water tank 1, achieving a certain degree of separation between fine particles and the cutting fluid. The first water pump 3 is located on the primary water tank 1 for convenient extraction of the cutting fluid. The first water pump 3 is connected to the centrifuge 4 via the first pipeline 7, transporting the cutting fluid from the primary water tank to the centrifuge 4. The centrifuge 4 is located on the secondary water tank 2, and achieves solid-liquid separation through high-speed rotation. The centrifuge 4 removes tiny particles from the cutting fluid, achieving thorough filtration. The outlet of the centrifuge 4 is connected to the secondary water tank 2, where the filtrate is temporarily stored. A cutting fluid cooler 5 is also installed on the secondary water tank 2, with its heat exchange end located inside the tank, cooling the filtrate. The input of the second water pump 6 is connected to the secondary water tank 2, and its output is connected to the spraying device 10 via a second pipeline 8, transporting the fully cooled filtrate from the secondary water tank 2 to the spraying device 10, ultimately achieving the filtration, cooling, and utilization of the cutting fluid.

[0038] Therefore, the filtration and cooling system of this application first filters the cutting fluid through the filter basket 9, then fully filters the first filtered cutting fluid through the centrifuge 4, and finally cools the filtrate through the cutting fluid cooler 5 to obtain a usable filtrate. This filtration and cooling process is simple, and the related equipment layout is reasonable and compact, effectively reducing energy consumption. The filter basket 9 is positioned above the primary water tank 1, forming a top-down preliminary filtration path. This significantly shortens the flow of cutting fluid from machine tool chip removal to preliminary filtration, saving energy and avoiding the risk of pipeline blockage. The first water pump 3 is directly installed on the side of the primary water tank, allowing for maintenance and parts replacement without disassembling the tank, greatly reducing maintenance time. The side installation also allows for direct observation of the pump's operating status, such as vibration and leakage, facilitating quick assessment of the tank level and pump synergy by operators. The centrifuge 4 and the cutting fluid cooler 5 are installed on top of the secondary water tank 2, forming a highly integrated filtration-cooling unit. The centrifuge outlet is directly connected to the secondary water tank, utilizing gravity flow to reduce pipeline bends. The cooler's heat exchange end is located inside the secondary water tank 2, achieving efficient contact cooling and improving heat exchange efficiency.

[0039] like Figure 2As shown, the filter basket 9 is located in the middle above the primary water tank 1. Inside the filter basket 9 is a chip collection basket 91. Multiple flow holes 911 are evenly arranged at the bottom of the chip collection basket 91, and a first-stage filter screen is fixedly installed above the flow holes 911. The filter basket 9 serves as the main structure of the primary filtration unit, with the chip collection basket 91 inside. The cutting fluid discharged from the machine tool first enters the chip collection basket 91, and then flows out quickly through the flow holes 911, preventing fluid accumulation in the chip collection basket. Larger particles in the cutting fluid are filtered into the chip collection basket 91 by the first-stage filter screen fixed above the flow holes 911. When larger particles accumulate to a certain extent, the chip collection basket 91 can be removed and cleaned.

[0040] like Figure 3 As shown, the filter basket serves as the carrier of the entire primary filtration unit. Its bottom has a mesh structure, and a second-stage filter screen is fixedly installed above the mesh structure. The pore size of the second-stage filter screen is smaller than that of the first-stage filter screen. Utilizing the difference in pore size between the two stages of filter screens, progressive filtration of impurities of different particle sizes is achieved, resulting in an effective gradient filtration effect from coarse to fine filtration. Two chip collection baskets 91 are included, and flow channels 92 are formed between the two chip collection baskets 91 and the filter basket 9, as well as between the two chip collection baskets 91. This increases the flow area of ​​the cutting fluid, reduces the fluid flow rate, and allows the cutting fluid more time to pass through the filter screen within the filter basket 9, improving filtration efficiency. Simultaneously, it ensures uniform distribution of the cutting fluid, preventing concentrated impact on a specific area of ​​the first-stage filter screen and reducing the risk of localized clogging.

[0041] like Figure 4 As shown, the first water pump 3 is a centrifugal water supply pump. The first water pump 3 includes an inlet end 31 extending into the primary water tank 1. The bottom of the inlet end 31 is close to the bottom of the primary water tank 1, drawing most of the coolant from the tank to reduce residue and shorten the water inlet path, reducing resistance. A water level sensor is installed inside the inlet end 31 to monitor the water level in real time. When the water level is below a set threshold, a signal is sent to the control system to automatically shut down the first water pump 3 to prevent damage from dry running. Multiple inlets 32 are evenly distributed at the lower part of the inlet end 31 to disperse water intake, avoiding excessively fast local water flow and preventing the formation of eddies, thus ensuring stable water flow. Meanwhile, the second water pump 6 is located on one side of the secondary water tank 2. The input end of the second water pump 6 is connected to the secondary water tank 2 via a water supply pipe 11, which stably delivers the coolant from the secondary water tank 2 to the second water pump 6.

[0042] In some embodiments of this application, the first pipeline 7 serves as a channel connecting the first water pump 3 and the centrifuge 4, transmitting the filtrate drawn by the first water pump 3 to provide a processing liquid source for the centrifuge 4. The first pipeline 7 is equipped with a flow regulating valve and a pressure sensor. The flow regulating valve is located on the section of the first pipeline 7 close to the first water pump 3, directly regulating the flow rate when the filtrate is just output from the first water pump 3 and has not yet flowed through a long pipeline and experienced complex pressure changes. It can also pre-adjust the filtrate flow rate to the stable value required by the centrifuge 4, avoiding shocks to the centrifuge 4 due to sudden flow changes and ensuring its stable operation. The pressure sensor is located on the section of the pipeline between the flow regulating valve 71 and the centrifuge 4, acquiring the stable pressure value after flow regulation. It can eliminate interference from pressure transients during flow regulation, ensuring that the monitoring data accurately reflects the actual pressure delivered to the centrifuge 4.

[0043] Data detected by the flow regulating valve and pressure sensor is used to control the speed of the first water pump 3, forming a closed-loop control. When the operating conditions of the centrifuge 4 change, such as a change in the material of the processed workpiece leading to different impurity contents, the demand for filtrate flow rate and pressure will also change accordingly. At this time, the flow regulating valve adjusts its opening to change the filtrate flow rate, the pressure sensor monitors the pipeline pressure in real time, and transmits the data to the control system. The control system adjusts the speed of the first water pump 3 according to the preset pressure value and flow rate demand, thereby achieving a dynamic balance between flow rate and pressure, ensuring that the centrifuge 4 is always in the optimal working state.

[0044] like Figure 5 As shown, the centrifuge 4 includes a centrifuge body 41, a centrifuge motor 42 mounted on the upper part of the centrifuge body 41, and a centrifuge control cabinet 43. The vertically stacked design reduces the footprint of the centrifuge 4, forming a compact filtration and cooling unit. Each module can be independently disassembled and maintained, achieving a balance between high-efficiency separation, energy-saving operation, and convenient maintenance. The side wall of the centrifuge body 41 is equipped with a sensor to detect the liquid level inside the centrifuge body 41. When the liquid level in the centrifuge body 41 reaches the set upper limit, the first water pump 3 stops feeding to prevent liquid overflow. When the liquid level is below the lower limit, an early warning is triggered, and the shutdown is delayed to prevent the centrifuge 4 from running dry and causing wear. Simultaneously, a buffer device is installed at the bottom of the centrifuge body 41 to buffer the vibration generated by the high-speed rotation of the centrifuge, reducing the vibration transmitted to the entire filtration and cooling system and lowering noise.

[0045] In some embodiments of this application, the secondary water tank 2 is equipped with a liquid level sensor and a temperature sensor. The liquid level sensor is connected to the control circuit of the first water pump 3, and the temperature sensor is connected to the control circuit of the cutting fluid cooler 5. The secondary water tank 2 receives the cutting fluid filtered by the centrifuge 4 and provides cooling space for the cutting fluid cooler 5. The integrated liquid level sensor and temperature sensor enable real-time monitoring of the liquid level and temperature within the tank. When the liquid level in the secondary water tank 2 is below a set lower limit, the first water pump 3 is triggered to accelerate; when the liquid level reaches a set upper limit, the speed of the first water pump 3 is reduced or stopped to prevent overflow, precisely controlling the liquid level fluctuations in the secondary water tank 2 and ensuring stable cutting fluid circulation. When the temperature of the filtrate in the secondary water tank 2 is higher than a set value, the operating power of the cutting fluid cooler is increased to quickly reduce the cutting fluid temperature; when the temperature of the filtrate in the secondary water tank 2 is lower than a set value, the cooler 5 reduces its power or goes into standby mode to avoid over-cooling and energy waste. By real-time monitoring and coordinated control of liquid level and temperature, the entire process of the filtration and cooling system is automated, which not only ensures the safety and stability of equipment operation, but also reduces production costs through energy efficiency optimization.

[0046] like Figure 5 As shown, the output end of the second pipeline 8 is connected to the machine head water distribution assembly 81. The machine head water distribution assembly 81 includes a main distribution pipe 811 and multiple parallel branch pipes 812. The main distribution pipe 811 is connected to the second pipeline 8, and the outlet end of each branch pipe 812 is connected to the spraying device 10. Each branch pipe 812 is equipped with a flow regulating valve. Utilizing the parallel flow distribution structure, the fluid in the main distribution pipe 811 is evenly or proportionally distributed to the multiple branch pipes 812. The multiple branch pipes 812 can correspond to different spraying positions, meeting the spraying needs of multiple workstations and multiple nozzles. The independent flow regulating valve allows the operator to dynamically adjust the flow rate of each branch pipe 812 according to real-time processing requirements, optimizing the cooling and lubrication effect. At the same time, by changing the resistance of the branch pipe 812 through the flow regulating valve, on-demand distribution can be achieved, suitable for the differentiated requirements of cutting fluid flow rate for different processing technologies.

[0047] A second aspect of this application provides a machine tool, including a body, a spindle and a worktable disposed on the body, a cutting tool disposed on the spindle, a chip removal channel disposed below the worktable, and a filtration and cooling system as described in one of the preceding embodiments. A headstock water distribution assembly 81 is connected to the spindle, a spraying device 10 is disposed around the outer periphery of the cutting tool, and the chip removal channel outlet leads to a primary water tank 1, achieving efficient filtration, cooling, and recycling of the cutting fluid. Since this machine tool has the aforementioned machine tool body, it also possesses the corresponding effects of that machine tool body, which will not be elaborated further here.

[0048] In some embodiments of this application, the machine tool also includes a controller, and a control valve is also provided on the second pipeline 8. The control valve is connected to the controller and is used to precisely control the flow of the second pipeline 8, dynamically adjusting the cutting fluid flow according to processing requirements to avoid waste or insufficiency, while reducing manual intervention, improving processing efficiency, and adapting to complex working conditions. The primary water tank 1 and the secondary water tank 2 are located on both sides of the main body, that is, the primary water tank 1 and the secondary water tank 2 are separately laid out, reducing maintenance costs, while adapting to the machine tool structural design, facilitating the integration of the filtration and cooling system, and improving the overall compactness of the machine tool.

[0049] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A filtration cooling system, characterized in that, The system includes a primary water tank (1), a secondary water tank (2), a first water pump (3), a centrifuge (4), a cutting fluid cooler (5), a second water pump (6), a first pipeline (7), a second pipeline (8), and a spraying device (10). A filter basket (9) is provided on the primary water tank (1). The first water pump (3) is located on the primary water tank (1) and is connected to the centrifuge (4) through the first pipeline (7). The centrifuge (4) and the cutting fluid cooler (5) are located on the secondary water tank (2). The outlet of the centrifuge (4) is connected to the secondary water tank (2). The heat exchange end of the cutting fluid cooler (5) is located inside the secondary water tank (2). The input end of the second water pump (6) is connected to the secondary water tank (2), and the output end of the second water pump (6) is connected to the spraying device (10) through the second pipeline (8).

2. The filtration and cooling system according to claim 1, characterized in that, The filter basket (9) is located in the middle above the primary water tank (1). Inside the filter basket (9) is a debris collection basket (91). Multiple flow holes (911) are evenly arranged at the bottom of the debris collection basket (91). A first-stage filter screen is fixedly installed above the flow holes (911).

3. The filtration and cooling system according to claim 2, characterized in that, The bottom of the filter basket (9) is a mesh structure, and a second-stage filter screen is fixedly installed above the mesh structure, and the pore size of the second-stage filter screen is smaller than that of the first-stage filter screen. The chip collection basket (91) includes two, and a flow channel (92) is formed between the two chip collection baskets (91) and the filter basket (9) and between the two chip collection baskets (91).

4. The filtration and cooling system according to any one of claims 1-3, characterized in that, The first water pump (3) is a centrifugal water supply pump. The first water pump (3) includes an inlet end (31) extending into the interior of the first-stage water tank (1). The bottom of the inlet end (31) is close to the bottom of the first-stage water tank (1). A water level sensing device is installed inside the inlet end (31). Multiple water inlets (32) are evenly arranged at the lower part of the inlet end (31). The second water pump (6) is located on one side of the secondary water tank (2), and the input end of the second water pump (6) is connected to the secondary water tank (2) through the water supply pipe (11).

5. The filtration and cooling system according to claim 4, characterized in that, The first pipeline (7) is equipped with a flow regulating valve and a pressure sensor. The flow regulating valve is located on the section of the first pipeline (7) close to the first water pump (3). The pressure sensor is located on the section of the pipeline between the flow regulating valve (71) and the centrifuge (4). The detection data of the flow regulating valve and / or the pressure sensor are used to control the speed of the first water pump (3).

6. The filtration and cooling system according to claim 5, characterized in that, The centrifuge (4) includes a centrifuge body (41), a centrifuge motor (42) disposed on the upper end of the centrifuge body (41), and a centrifuge control cabinet (43). The side wall of the centrifuge body (41) is provided with a sensing device for sensing the liquid level inside the centrifuge body (41), and a buffer device is provided at the bottom of the centrifuge body (41).

7. The filtration and cooling system according to claim 6, characterized in that, The secondary water tank (2) is equipped with a liquid level sensing device and a temperature sensor. The liquid level sensing device is connected to the control circuit of the first water pump (3), and the temperature sensor is connected to the control circuit of the cutting fluid cooler (5).

8. The filtration and cooling system according to claim 7, characterized in that, The output end of the second pipeline (8) is connected to the head water distribution assembly (81). The head water distribution assembly (81) includes a main branch pipe (811) and multiple parallel branch pipes (812). The main branch pipe (811) is connected to the second pipeline (8). The outlet end of each branch pipe (812) is connected to the spraying device (10). Each branch pipe (812) is equipped with a flow regulating valve.

9. A machine tool, comprising a body, a spindle and a worktable disposed on the body, a cutting tool disposed on the spindle, and a chip removal channel disposed below the worktable, characterized in that, It also includes the filtration and cooling system according to any one of claims 1 to 8, wherein the head water distribution assembly (81) is connected to the main shaft, the spraying device (10) is arranged around the outer periphery of the cutter, and the chip discharge channel outlet leads to the primary water tank (1).

10. The machine tool according to claim 9, characterized in that, It also includes a controller, and a control valve is provided on the second pipeline (8). The control valve is connected to the controller and is used to control the flow rate of the second pipeline (8). The primary water tank (1) and the secondary water tank (2) are set separately, and the primary water tank (1) and the secondary water tank (2) are located on both sides of the main body.

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