Cutting fluid circulating supply system for machine tool

Abstract

The utility model relates to the field of machine tool machining, in particular to a cutting fluid circulating supply system for a machine tool, which comprises a recovery and purification unit, the recovery and purification unit is used for receiving and purifying cutting fluid dirty fluid discharged by the machine tool, and the recovery and purification unit is connected with a concentration detection device. The concentration detection device is communicated with a proportioning conveying pipe, one end of the proportioning conveying pipe is communicated with the concentration detection device, the other end of the proportioning conveying pipe is connected with a liquid proportioning unit, one end of the clean liquid conveying pipe is communicated with the proportioning conveying pipe, the other end of the clean liquid conveying pipe is connected with a clean liquid storage unit, and a first valve is arranged on the proportioning conveying pipe. A first valve is arranged on the proportioning conveying pipe, the first valve is used for controlling on-off of the proportioning conveying pipe, a second valve is arranged on the purified liquid conveying pipe, the second valve is used for controlling on-off of the purified liquid conveying pipe, and the second valve is located in the downstream direction of the joint of the proportioning conveying pipe and the purified liquid conveying pipe. And repeated proportioning of the cutting fluid is avoided.

Description

Technical Field

[0001] This utility model relates to the field of machine tool processing technology, and in particular to a cutting fluid circulation supply system for machine tools. Background Technology

[0002] Cutting fluid, as an important process medium in machining, is widely used in metal cutting, grinding, and other machining processes, primarily serving to lubricate, cool, clean, and prevent rust. However, in actual use, impurities such as metal chips, abrasive particles, and oil generated during machine tool processing continuously mix into the cutting fluid system. With each cycle, the impurity content accumulates. These suspended particles not only clog pipes and nozzles, causing abnormal wear on machining equipment, but also reduce the cooling performance of the cutting fluid, leading to increased surface roughness and, in severe cases, even causing deviations in workpiece dimensional accuracy.

[0003] More significantly, during long-term circulation, the effective concentration of cutting fluid decreases continuously due to evaporation, oxidative decomposition, and loss carried by the workpiece. When the cutting fluid concentration falls below a critical value (typically 3%-5%), its antibacterial properties decline significantly, making it prone to spoilage. Simultaneously, its lubrication and rust-preventing effects deteriorate drastically. Furthermore, existing cutting fluid circulation systems typically return all used cutting fluid (regardless of concentration) to the mixing tank for remixing. Even if the cutting fluid concentration is within acceptable limits, the system forcibly mixes it with new fluid. This design leads to unnecessary dilution or concentration of the cutting fluid, wasting the original fluid and increasing costs. Utility Model Content

[0004] The purpose of this invention is to address the problems in the existing technology where long-term use of cutting fluid in machine tools leads to excessive impurities in the cutting fluid, and the long-term use of cutting fluid causes a decrease in its concentration, resulting in a decline in its antibacterial ability and deterioration, thus reducing its lubrication and rust prevention effects. Furthermore, the existing cutting fluid purification process requires the fluid to be sent to a mixing tank for mixing regardless of its concentration, leading to waste of the original fluid. This invention provides a cutting fluid circulation supply system for machine tools.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A cutting fluid circulation supply system for machine tools, applied to a machine tool, includes a recovery and purification unit for receiving and purifying the cutting fluid contaminants discharged from the machine tool. The recovery and purification unit is connected to a concentration detection device, which is connected to a proportioning and delivery pipe. One end of the proportioning and delivery pipe is connected to the concentration detection device, and the other end is connected to a liquid proportioning unit. The system also includes a clean liquid delivery pipe, one end of which is connected to the proportioning and delivery pipe, and the other end of which is connected to a clean liquid storage unit.

[0007] The proportioning and conveying pipe is equipped with a first valve, which is used to control the opening and closing of the proportioning and conveying pipe.

[0008] The purified liquid delivery pipe is equipped with a second valve, which is used to control the opening and closing of the purified liquid delivery pipe; the second valve is located downstream of the connection between the proportioning delivery pipe and the purified liquid delivery pipe.

[0009] This invention relates to a cutting fluid circulation supply system for machine tools. It incorporates a recovery and purification unit to collect and purify used cutting fluid from the machine tool. A concentration detection device is also connected to monitor the concentration of the purified cutting fluid. This device is connected to a liquid proportioning unit via a proportioning and delivery pipe, which supplies the cutting fluid to the liquid proportioning unit. A clean liquid delivery pipe is connected to the proportioning and delivery pipe, which supplies the cutting fluid to a clean liquid storage unit. The proportioning and delivery pipe has a first valve that controls its own opening and closing, and the clean liquid delivery pipe has a second valve that controls its own opening and closing. The second valve is located downstream of the connection between the proportioning and delivery pipes, ensuring that it only controls the clean liquid. The delivery pipe is controlled so that when the first valve is closed and the second valve is open, the purified cutting fluid can flow into the purified fluid storage unit through the purified fluid delivery pipe. Conversely, when the second valve is open and the first valve is closed, the purified cutting fluid can flow into the liquid proportioning unit through the proportioning delivery pipe. Furthermore, this application includes a concentration detection device to detect the cutting fluid concentration. This allows the flow direction of the cutting fluid to be selected based on its concentration during operation. The recycling and purification unit completes the recycling and purification of the cutting fluid. The proportioning delivery pipe and concentration detection device also enable adjustment of the cutting fluid flow direction based on its concentration. This coordinated operation avoids the repeated proportioning process of the cutting fluid, improving work efficiency, reducing waste of raw materials, and lowering costs.

[0010] As a preferred embodiment of this utility model, the liquid proportioning unit is connected to the purified liquid storage unit, and the purified liquid storage unit is used to supply cutting fluid to the machine tool.

[0011] The liquid is proportioned by the liquid mixing unit and then sent to the clean liquid storage unit. The clean liquid storage unit then supplies the machine tool with clean cutting fluid, ensuring that the machine tool always has clean cutting fluid during operation.

[0012] As a preferred embodiment of this utility model, the liquid proportioning unit includes a proportioning tank, and the proportioning tank is connected to a cutting fluid raw material supply pipe and a water inlet pipe.

[0013] As a preferred embodiment of this utility model, the water inlet pipe is equipped with a solenoid valve.

[0014] The water intake is controlled by a solenoid valve.

[0015] As a preferred embodiment of this utility model, the liquid proportioning unit is further provided with a proportioning and mixing pump.

[0016] The mixing pump can fully mix the stock solution with water.

[0017] As a preferred embodiment of this utility model, a concentration module, a pH monitoring module, and a valve are provided between the liquid proportioning unit and the purified liquid storage unit.

[0018] The concentration module and pH monitoring module can monitor the mixed cutting fluid in the liquid mixing unit. Once the mixture meets the requirements, the valve is opened to allow the mixed liquid to flow into the clean liquid storage unit, and then the clean liquid storage unit supplies the liquid to the machine tool.

[0019] As a preferred embodiment of this utility model, the recycling and purification unit includes a liquid recycling tank, one end of which is connected to the machine tool and the other end is connected to a purification device. The end of the purification device that is not connected to the liquid recycling tank is connected to the concentration detection device.

[0020] By designing a liquid recovery tank and purification device, waste cutting fluid can be recovered and purified for reuse, reducing cutting fluid consumption and waste discharge, and effectively reducing resource waste.

[0021] As a preferred embodiment of this utility model, the liquid recovery tank and the purification device are connected through a liquid infusion pipe and a return pipe. The liquid infusion pipe is equipped with a third valve, which is used to control the opening and closing of the liquid infusion pipe. The return pipe is equipped with a fourth valve, which is used to control the opening and closing of the return pipe.

[0022] Valves are installed on the return pipe and the infusion pipe to prevent backflow of liquid during the purification process, thereby ensuring that the purified liquid is not contaminated and guaranteeing the stability and effectiveness of the purification system. Furthermore, when the machine tool is not in operation, the purification device can still clean the waste liquid in the recovery tank by opening and closing the third and fourth valves before sending it back to the recovery tank for subsequent use.

[0023] As a preferred embodiment of this utility model, the reflux pipe is connected to the proportioning and conveying pipe through a reversing valve, and the reversing valve is located upstream of the connection between the proportioning and conveying pipe and the purified liquid conveying pipe.

[0024] By installing a reversing valve, operators can control the flow of cutting fluid in the purification system into the proportioning delivery pipe or the return pipe.

[0025] As a preferred embodiment of this utility model, the purification device includes a sterilization and oil removal module, which is connected to the liquid recovery tank through an infusion pipeline. A sedimentation module is connected downstream of the sterilization and oil removal module, and the sedimentation module is connected to the concentration detection device, which is located downstream of the sedimentation module.

[0026] The sterilization and degreasing module effectively removes bacteria, oil, and other contaminants from the cutting fluid, ensuring the quality of the recovered liquid. Through multi-stage treatment of the purification system (sterilization and degreasing module + sedimentation module), the cutting fluid is purified more comprehensively, ensuring the liquid is clean and uncontaminated. The combined design of the sterilization and degreasing module, sedimentation module, and concentration detection device makes the entire purification process more automated and intelligent. The concentration detection device provides real-time feedback, and the system can automatically adjust the liquid flow rate and concentration control during the recovery and purification process as needed, improving system operating efficiency.

[0027] As a preferred embodiment of this utility model, the cutting fluid circulation purification system further includes a waste tank, which is connected to the sterilization and degreasing module.

[0028] The design, which connects the waste bin to the sterilization and degreasing module, effectively collects and stores waste generated during the purification process (such as oil, impurities, and sediment). This design prevents waste from spreading throughout the system, reduces pollution to the environment and equipment, and facilitates subsequent waste disposal.

[0029] As a preferred embodiment of this utility model, a filtration device is provided between the machine tool and the liquid recovery tank.

[0030] The filtration device can filter out solid impurities, metal shavings, oil stains and other particulate matter generated in the machine tool before the cutting fluid is recovered, preventing these impurities from entering the liquid recovery tank, thereby reducing the burden on the purification system and improving the efficiency of cutting fluid recovery.

[0031] As a preferred embodiment of this utility model, the machine tool is connected to the purified liquid storage unit through a pipe, and a sixth valve is provided between the machine tool and the purified liquid storage unit. The machine tool is also connected to the liquid recovery tank through a pipe, and a seventh valve is provided between the machine tool and the liquid recovery tank.

[0032] The sixth and seventh valves allow the machine tool to flexibly switch between the supply and recovery paths of the cutting fluid. The sixth valve opens when fluid supply is needed, and the seventh valve opens when fluid recovery is required, thus ensuring the stability and efficiency of the system.

[0033] As a preferred embodiment of this utility model, pumps are respectively provided at the connection points between the machine tool and the liquid recovery tank and the clean liquid storage unit. The pumps and valves enable the cutting fluid in the clean liquid storage unit to flow into the machine tool and the cutting fluid contaminant in the machine tool to flow into the liquid recovery tank.

[0034] As a preferred embodiment of this utility model, it also includes a controller, which is communicatively connected to the first valve and the second valve.

[0035] Through the communication connection between the controller and the valve, the system can automatically adjust the liquid flow state.

[0036] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0037] 1. This utility model relates to a cutting fluid circulation supply system for machine tools. It includes a recovery and purification unit to recover and purify the used cutting fluid, and a concentration detection device to monitor the concentration of the purified cutting fluid. The concentration detection device is connected to a liquid proportioning unit via a proportioning and delivery pipe, which delivers the cutting fluid into the liquid proportioning unit. A clean liquid delivery pipe is connected to the proportioning and delivery pipe, which delivers the cutting fluid into a clean liquid storage unit. The proportioning and delivery pipe has a first valve that controls its own opening and closing, and the clean liquid delivery pipe has a second valve that controls its own opening and closing. The second valve is located downstream of the connection between the proportioning and delivery pipes, ensuring that it only controls the clean liquid. The liquid delivery pipe is controlled so that when the first valve is closed and the second valve is open, the purified cutting fluid can flow into the purified liquid storage unit through the purified liquid delivery pipe. Conversely, when the second valve is open and the first valve is closed, the purified cutting fluid can flow into the liquid proportioning unit through the proportioning pipe. Furthermore, this application includes a concentration detection device to detect the cutting fluid concentration. This allows the flow direction of the cutting fluid to be selected based on the concentration during operation. The recycling and purification unit completes the recycling and purification of the cutting fluid. The proportioning pipe and concentration detection device also enable adjustment of the cutting fluid flow direction based on the cutting fluid concentration. The coordination of the purified liquid delivery pipe and concentration detection device avoids the process of repeatedly proportioning the cutting fluid, improving work efficiency, reducing waste of raw materials, and lowering costs. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the cutting fluid circulation and purification system of this utility model;

[0039] Figure 2 This is a schematic diagram of the cutting fluid circulation and purification system of this utility model, which uses a proportioning delivery pipe to transport cutting fluid.

[0040] Figure 3This is a schematic diagram of the cutting fluid circulation and purification system of this utility model, which uses a clean fluid delivery pipe to transport cutting fluid.

[0041] Figure 4 This is a schematic diagram showing the connection between the recycling and purification unit and the concentration detection device of this utility model;

[0042] Figure 5 This is a schematic diagram of the connection between the cutting fluid circulation and purification system of this utility model and the machine tool;

[0043] Figure 6 This is a top view of the cutting fluid circulation and purification system of this utility model before it is connected to the machine tool;

[0044] Figure 7 This is a three-dimensional structural diagram of the cutting fluid circulation and purification system of this utility model before it is connected to the machine tool.

[0045] Icons: 1-Recovery and purification unit; 11-Liquid recovery tank; 12-Purification device; 121-Sterilization and oil removal module; 122-Sedimentation module; 13-Infusion pipeline; 131-Third valve; 14-Return pipeline; 141-Fourth valve; 2-Concentration detection device; 3-Proportioning and delivery pipe; 31-First valve; 4-Clean liquid delivery pipe; 41-Second valve; 5-Liquid proportioning unit; 51-Proportioning tank; 52-Cutting fluid concentrate supply pipe; 53-Water inlet pipe; 531-Solenoid valve; 6-Clean liquid storage unit; 7-Waste bin; 8-Reversing valve; 9-Controller; 10-Fifth valve; 20-Sixth valve; 30-Seventh valve; 40-Machine tool. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0047] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationship of the product / equipment / device during its usual use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution. They do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship, and therefore should not be construed as a limitation of this utility model.

[0048] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0049] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0050] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0051] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0052] Example 1

[0053] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7The diagram shows a cutting fluid circulation supply system for a machine tool. The system is connected to the machine tool 40 and includes a liquid proportioning unit 5. The liquid proportioning unit 5 is connected downstream to a clean fluid storage unit 6, which supplies purified cutting fluid to the machine tool 40. The system also includes a recovery and purification unit 1, which receives and purifies the cutting fluid contaminants discharged from the machine tool 40. The recovery and purification unit 1 is connected downstream to a concentration detection device 2, which detects the concentration of the cutting fluid discharged from the recovery and purification unit 1.

[0054] The concentration detection device 2 is connected to the proportioning and conveying pipe 3, which enables the concentration detection device 2 to be connected to the liquid proportioning unit 5. The proportioning and conveying pipe 3 is also connected to the purified liquid conveying pipe 4, which enables the concentration detection device 2 to be connected to the purified liquid storage unit 6.

[0055] The proportioning and conveying pipe 3 is equipped with a first valve 31, which can control the opening and closing of the proportioning and conveying pipe 3. The purified liquid conveying pipe 4 is equipped with a second valve 41, which is used to control the opening and closing of the purified liquid conveying pipe 4. The second valve 41 is located downstream of the connection between the proportioning and conveying pipe 3 and the purified liquid conveying pipe 4.

[0056] After the recycling and purification unit 1 purifies the cutting fluid, it delivers the cutting fluid to the concentration detection device 2. When the cutting fluid concentration is found to be qualified, the first valve 31 is closed and the second valve 41 is opened, so that the cutting fluid flows from the concentration detection device 2 into the clean liquid delivery pipe 4. At this time, because the first valve 31 is closed, the proportioning delivery pipe 3 cannot send the cutting fluid into the liquid proportioning unit 5, while the second valve 41 is open, so that the cutting fluid flows into the clean liquid storage unit 6 through the clean liquid delivery pipe 4, and supplies liquid to the machine tool 40 through the clean liquid storage unit 6.

[0057] When the cutting fluid concentration is detected to be too low, the first valve 31 is opened and the second valve 41 is closed. Since the second valve 41 is located downstream of the connection between the proportioning and delivery pipe 3 and the clean liquid delivery pipe 4, the proportioning and delivery pipe 3 is in the open state and the clean liquid delivery pipe 4 is in the closed state. The cutting fluid flows out from the concentration detection device 2 and flows into the liquid proportioning unit 5 through the proportioning and delivery pipe 3. The cutting fluid is proportioned and the concentration is adjusted in the liquid proportioning unit 5. The adjusted cutting fluid is then sent to the clean liquid storage unit 6, and the machine tool 40 is supplied with liquid through the clean liquid storage unit 6.

[0058] In one or more embodiments, the liquid proportioning unit 5 is connected to the clean fluid storage unit 6. The clean fluid storage unit 6 is used to supply cutting fluid to the machine tool 40. The liquid proportioning unit 5 proportions the liquid before sending it to the clean fluid storage unit 6, and then the clean fluid storage unit 6 supplies fluid to the machine tool 40, ensuring that the machine tool 40 has clean cutting fluid available at all times during operation. Figure 1 , Figure 5 and Figure 6 As shown.

[0059] In one or more embodiments, the liquid proportioning unit 5 includes a proportioning tank 51, with a cutting fluid concentrate supply pipe 52 and a water inlet pipe 53 connected to the proportioning tank 51. A solenoid valve 531 is installed on the water inlet pipe 53 to control the water inlet flow rate. Figure 1 As shown.

[0060] In one or more embodiments, the liquid proportioning unit 5 is further provided with a proportioning and mixing pump, which can fully mix the stock solution with water.

[0061] Furthermore, a concentration module, a pH monitoring module, and a valve are provided between the liquid mixing unit 5 and the clean liquid storage unit 6. The concentration module and pH monitoring module can monitor the mixed cutting fluid in the liquid mixing unit 5. Once the fluid meets the requirements, the valve is opened to allow the mixed liquid to flow into the clean liquid storage unit 6 and be supplied to the machine tool 40 through the clean liquid storage unit 6.

[0062] In one or more embodiments, the recycling and purification unit 1 includes a liquid recycling tank 11. One end of the liquid recycling tank 11 is connected to the machine tool 40, and the other end is connected to a purification device 12. The end of the purification device 12 not connected to the liquid recycling tank 11 is connected to a concentration detection device 2. Through the design of the liquid recycling tank 11 and the purification device 12, waste cutting fluid can be recycled and purified for reuse, reducing the consumption of cutting fluid and waste liquid discharge, effectively reducing resource waste. Figure 1 and Figure 2 As shown.

[0063] In one or more embodiments, the liquid recovery tank 11 and the purification device 12 are connected via a liquid delivery pipe 13 and a return pipe 14. A third valve 131 is provided on the liquid delivery pipe 13 to control its opening and closing. A fourth valve 141 is provided on the return pipe 14 to control its opening and closing. The valves on the return pipe 14 and the liquid delivery pipe 13 prevent backflow of the liquid during the purification process, thus ensuring that the purified liquid is not contaminated and guaranteeing the stability and effectiveness of the purification system. Furthermore, even when the machine tool 40 is not in operation, the opening and closing of the third valve 131 and the fourth valve 141 allows the purification device 12 to clean the waste liquid in the recovery tank before sending it back into the recovery tank for subsequent use. Figure 1 As shown.

[0064] In one or more embodiments, the return pipe 14 and the proportioning delivery pipe 3 are connected via a reversing valve 8. The reversing valve 8 is located upstream of the connection between the proportioning delivery pipe 3 and the purified liquid delivery pipe 4. By setting the reversing valve 8, the operator can control the flow of cutting fluid in the purification system into the proportioning delivery pipe 3 or the return pipe 14. Figure 1 As shown.

[0065] In one or more embodiments, the purification device 12 includes a sterilization and oil removal module 121, which is connected to the liquid recovery tank 11 via a liquid delivery pipe 13. A sedimentation module 122 is connected downstream of the sterilization and oil removal module 121, and the sedimentation module 122 is connected to a concentration detection device 2, which is located downstream of the sedimentation module 122. The sterilization and oil removal module 121 effectively removes bacteria, oil, and other contaminants from the cutting fluid, ensuring the quality of the recovered liquid. Through the multi-stage treatment of the purification system (sterilization and oil removal module 121 and sedimentation module 122), the cutting fluid can be purified more comprehensively, ensuring the liquid is clean and uncontaminated. The combined design of the sterilization and oil removal module 121, sedimentation module 122, and concentration detection device 2 makes the entire purification process more automated and intelligent. The concentration detection device 2 can provide real-time feedback, and the system can automatically adjust the liquid flow rate and concentration control during the recovery and purification process as needed, improving the system's operating efficiency.

[0066] Furthermore, the cutting fluid circulation and purification system also includes a waste bin 7, which is connected to the sterilization and degreasing module 121. This connection between the waste bin 7 and the sterilization and degreasing module 121 effectively collects and stores waste generated during the purification process (such as oil, impurities, and sediment). This design prevents waste from spreading throughout the system, reducing pollution to the environment and equipment, and facilitating subsequent waste disposal. Figure 4 and Figure 1 As shown.

[0067] In one or more embodiments, a filter device is provided between the machine tool 40 and the liquid recovery tank 11. The filter device can filter out solid impurities, metal shavings, oil stains and other particulate matter generated in the machine tool 40 before the cutting fluid is recovered, so as to prevent these impurities from entering the liquid recovery tank 11, thereby reducing the burden on the purification system and improving the efficiency of cutting fluid recovery.

[0068] In one or more embodiments, a controller 9 is further included. The controller 9 is communicatively connected to the first valve 31 and the second valve 41. Through the communication connection between the controller 9 and the valves, the system can automatically adjust the liquid flow state, such as... Figure 5 , Figure 6 and Figure 7 As shown.

[0069] In one or more embodiments, the mixing tank 51 is connected to the purified liquid storage unit 6 by a pipe and is provided with a fifth valve 10;

[0070] Furthermore, a sixth valve 20 is provided between the clean fluid storage unit 6 and the machine tool 40 to control the flow state of the cutting fluid between the clean fluid storage unit 6 and the machine tool 40, such as... Figure 1 As shown.

[0071] In one or more embodiments, a seventh valve 30 is provided between the machine tool 40 and the liquid recovery tank 11 to control the flow state of the cutting fluid between the machine tool 40 and the liquid recovery tank 11, such as... Figure 1 As shown.

[0072] In this application, the first valve 31, the second valve 41, the third valve 131, the fourth valve 141, the fifth valve 10, the sixth valve 20, the seventh valve 30 and the solenoid valve 531 are all liquid solenoid valves, and the reversing valve 8 is a liquid reversing valve.

[0073] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cutting fluid circulation supply system for a machine tool, applied to a machine tool (40), characterized by, Including recovery purification unit (1), the recovery purification unit (1) is used to receive the cutting fluid dirty liquid discharged by the machine tool (40) and purifies, the recovery purification unit (1) is connected with concentration detection device (2), the concentration detection device (2), the concentration detection device (2) is communicated with proportioning delivery pipe (3), one end of the proportioning delivery pipe (3) is communicated with the concentration detection device (2), the other end is connected with liquid proportioning unit (5), still include clean liquid delivery pipe (4), one end of the clean liquid delivery pipe (4) is communicated with the proportioning delivery pipe (3), the other end is connected with clean liquid storage unit (6); The first valve (31) is arranged on the proportioning delivery pipe (3), and the first valve (31) is used for controlling the on-off of the proportioning delivery pipe (3); The first valve (31) is located in the downstream direction of the connection position of the proportioning delivery pipe (3) and the clean liquid delivery pipe (4); The second valve (41) is arranged on the clean liquid delivery pipe (4), and the second valve (41) is used for controlling the on-off of the clean liquid delivery pipe (4).

2. The cutting fluid circulation supply system for a machine tool according to claim 1, wherein The liquid proportioning unit (5) is communicated with the clean liquid storage unit (6), and the clean liquid storage unit (6) is used for supplying cutting fluid to the machine tool (40).

3. The cutting fluid circulation supply system for a machine tool according to claim 2, wherein The liquid proportioning unit (5) comprises a proportioning tank (51), and the proportioning tank (51) is communicated with a cutting fluid raw liquid supply pipe (52) and a water inlet pipe (53).

4. The cutting fluid circulation supply system for a machine tool according to claim 3, wherein The recovery purification unit (1) comprises a liquid recovery tank (11), one end of the liquid recovery tank (11) is communicated with a machine tool, and the other end is communicated with a purification device (12), one end of the purification device (12) which is not communicated with the liquid recovery tank (11) is communicated with the concentration detection device (2).

5. The cutting fluid circulation supply system for a machine tool according to claim 4, wherein The liquid recovery tank (11) and the purification device (12) are communicated through a liquid delivery pipeline (13) and a backflow pipeline (14), the third valve (131) is arranged on the liquid delivery pipeline (13), the third valve (131) is used for controlling the on-off of the liquid delivery pipeline (13), the fourth valve (141) is arranged on the backflow pipeline (14), and the fourth valve (141) is used for controlling the on-off of the backflow pipeline (14).

6. The cutting fluid circulating supply system for machine tools according to claim 5, wherein The backflow pipeline (14) and the proportioning delivery pipe (3) are communicated through a reversing valve (8), and the reversing valve (8) is located in the upstream direction of the connection position of the proportioning delivery pipe (3) and the clean liquid delivery pipe (4).

7. The cutting fluid circulating supply system for machine tools according to claim 5, wherein The purification device (12) comprises a sterilization and oil removal module (121), the sterilization and oil removal module (121) is communicated with the liquid recovery tank (11) through the liquid delivery pipeline (13), the downstream direction of the sterilization and oil removal module (121) is communicated with a sedimentation module (122), the sedimentation module (122) is communicated with the concentration detection device (2), and the concentration detection device (2) is located in the downstream direction of the sedimentation module (122).

8. The cutting fluid circulating supply system for machine tools according to claim 7, wherein The cutting fluid circulating liquid supply system further comprises a waste bucket (7), and the waste bucket (7) is communicated with the sterilization and oil removal module (121).

9. The cutting fluid circulating supply system for machine tools according to claim 8, wherein The machine tool (40) and the liquid recovery tank (11) are provided with a filtering device.

10. A cutting fluid circulation and supply system for machine tools according to any one of claims 4 to 9, characterized in that, The machine tool (40) is communicated with the clean liquid storage unit (6) through a pipeline, a sixth valve (20) is arranged between the machine tool (40) and the clean liquid storage unit (6), the machine tool (40) is communicated with the liquid recovery tank (11) through a pipeline, and a seventh valve (30) is arranged between the machine tool (40) and the liquid recovery tank (11).

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