Cutting fluid circulating injection device and circulating injection method

Abstract

The invention relates to a cutting fluid circulating injection device which comprises a tap water supply device, a machining center chip cleaner, a first-order and second-order lathe chip cleaner and a cutting fluid circulating device, and the tap water supply device is connected with the machining center chip cleaner and the first-order and second-order lathe chip cleaner. The tap water supply device is located at liquid outlets of the machining center chip cleaner and the first-second-order lathe chip cleaner, the liquid inlet end of the cutting fluid circulation device is connected with a flowing liquid collecting opening of the machining center chip cleaner and a flowing liquid collecting opening of the first-second-order lathe chip cleaner, and the liquid outlet end of the cutting fluid circulation device is connected with the first-second-order lathe chip cleaner. Cutting fluid collected at the flowing liquid collecting opening of the machining center chip cleaner and the flowing liquid collecting opening of the first-order and second-order lathe chip cleaner is circulated into the first-order and second-order lathe chip cleaner through the cutting fluid circulating device.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, and in particular to a cutting fluid circulation injection device and a circulation injection method. Background Art

[0002] As we all know, the use process of cutting fluid in machining is as follows:

[0003] First, the cutting fluid is mixed with water at a certain ratio and stored in the external water tank of the machine tool. Then the cutting fluid pump transports the mixed working fluid stored in the tank to the processing surface through the cutting fluid pipeline to cool, clean and lubricate the tool and workpiece.

[0004] However, since the working fluid is the product of the original cutting fluid mixed with water in a certain proportion, it must be stored in a water tank for recycling. This leads to the problem that the concentration of the working fluid does not match the workpiece when the workpiece is replaced. And because of the large flow rate of traditional cutting fluid supply, the liquid supply system must use a large volume of liquid storage tank, resulting in long-term recycling of the working fluid, so the working fluid is very easy to corrupt and deteriorate, and it is inevitable to produce waste liquid that is hazardous waste.

[0005] The above situation will cause the following problems in actual production:

[0006] 1. The generation of waste liquid will lead to corresponding environmental problems (such as odor in the factory area, excessive atmospheric emissions, etc.).

[0007] 2. The generation of waste liquid is also a waste in the use of cutting fluid.

[0008] 3. The working fluid deteriorates, resulting in reduced working fluid performance, which will reduce the service life of the tool and the surface quality of the workpiece.

[0009] When the working fluid concentration does not match the workpiece, if the concentration is too high, it will cause a waste of cutting fluid; if the concentration is too low, it will cause a reduction in the service life of the tool and a decrease in the surface quality of the workpiece.

[0010] Therefore, a cutting fluid circulation injection device is urgently needed. Summary of the invention

[0011] The invention aims to solve the problem of working fluid deterioration caused by excessive liquid storage in a large-capacity liquid tank equipped with a machine tool, long-term storage and poor fluidity, and provides a cutting fluid circulation injection device.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] On the one hand, the present invention provides a cutting fluid circulation injection device, comprising a tap water supply device, a machining center chip conveyor, a first- and second-sequence lathe chip conveyor and a cutting fluid circulation device, wherein the tap water supply device is connected to the machining center chip conveyor and the first- and second-sequence lathe chip conveyor, respectively, and the tap water supply device is located at the liquid outlet of the machining center chip conveyor and the first- and second-sequence lathe chip conveyor, the liquid inlet end of the cutting fluid circulation device is connected to the liquid collection port of the machining center chip conveyor and the liquid collection port of the first- and second-sequence lathe chip conveyor, and the liquid outlet end of the cutting fluid circulation device is connected to the first- and second-sequence lathe chip conveyor, so as to realize that the cutting fluid collected at the liquid collection port of the machining center chip conveyor and the liquid collection port of the first- and second-sequence lathe is circulated to the first- and second-sequence lathe chip conveyor through the cutting fluid circulation device.

[0014] The cutting fluid circulation injection device, preferably, the tap water supply device includes a tap water supply pipeline, a liquid level gauge and a first valve assembly, the tap water supply pipeline is respectively connected to the liquid inlet of the machining center chip conveyor and the liquid inlet of the first- and second-sequence lathe chip conveyor, and the first valve assembly is provided at the liquid inlet of the machining center chip conveyor and the liquid inlet of the first- and second-sequence lathe chip conveyor, and the liquid level gauge is provided in both the machining center chip conveyor and the first- and second-sequence lathe chip conveyor.

[0015] The cutting fluid circulation injection device preferably includes a circulation pipeline and a second valve assembly, the liquid inlet end of the circulation pipeline is respectively connected to the reflux liquid collecting port of the machining center chip conveyor and the reflux liquid collecting port of the first- and second-sequence lathe chip conveyor, the liquid outlet end of the circulation pipeline is arranged inside the first- and second-sequence lathe chip conveyor, so as to circulate the cutting fluid recovered by the reflux liquid collecting port of the machining center chip conveyor and the reflux liquid collecting port of the first- and second-sequence lathe chip conveyor to the first- and second-sequence lathe chip conveyor, and the liquid outlet end of the circulation pipeline is provided with the second valve assembly.

[0016] The cutting fluid circulation injection device preferably comprises the first valve assembly and the second valve assembly each comprising a solenoid valve and a needle valve, and the needle valve and the solenoid valve are arranged in sequence along the liquid flow direction at the liquid inlet of the machining center chip conveyor, the liquid inlet of the first- and second-sequence lathe chip conveyor, and at the liquid outlet end of the circulation pipeline.

[0017] The cutting fluid circulation injection device preferably also includes a machining center operating device and a one-two sequence lathe operating device, the machining center operating device is connected to the machining center chip conveyor, and the one-two sequence lathe operating device is connected to the one-two sequence lathe chip conveyor.

[0018] The cutting fluid circulation injection device, preferably, the machining center operation device includes a machining center filter device, a machining center fluid supply pump, a machining center mixer, a machining center gear pump, a machining center solenoid valve and a machining center fluid supply nozzle, the machining center filter device is arranged in the machining center chip conveyor, and the machining center filter device is located before the fluid inlet end of the machining center fluid supply pump, so that the cutting fluid filtered by the machining center filter device enters the fluid inlet end of the machining center fluid supply pump, the fluid outlet end of the machining center fluid supply pump is connected to the fluid inlet end of the machining center mixer, the machining center mixer is provided with the machining center gear pump, the fluid outlet end of the machining center mixer is connected to the machining center fluid supply nozzle, and the fluid outlet end of the machining center mixer is provided with the machining center solenoid valve;

[0019] The machining center mixer includes a venturi tube and a kneading tube, the kneading tube is a static mixer, the liquid outlet end of the machining center liquid supply pump is connected to the liquid inlet of the venturi tube, the liquid outlet of the venturi tube is connected to the liquid inlet of the static mixer, and the liquid outlet of the static mixer is connected to the machining center liquid supply nozzle.

[0020] The cutting fluid circulation injection device, preferably, the one-two sequence lathe operation device comprises a one-two sequence lathe filter device, a one-two sequence lathe liquid supply pump, a one-two sequence lathe mixer, a one-two sequence lathe gear pump, a one-two sequence lathe liquid supply nozzle and a liquid mist mixing injection device, the one-two sequence lathe filter device is arranged in the one-two sequence lathe chip conveyor, and the one-two sequence lathe filter device is located before the liquid inlet end of the one-two sequence lathe liquid supply pump, so as to realize that the cutting fluid filtered by the one-two sequence lathe filter device enters the liquid inlet end of the one-two sequence lathe liquid supply pump, the liquid outlet end of the one-two sequence lathe liquid supply pump is connected to the liquid inlet end of the one-two sequence lathe mixer, the one-two sequence lathe mixer is provided with the one-two sequence lathe gear pump, and the liquid outlet end of the one-two sequence lathe mixer is connected to the one-two sequence lathe liquid supply nozzle;

[0021] The liquid mist mixing injection device includes a first liquid supply nozzle and a second liquid supply nozzle. The first liquid supply nozzle and the second liquid supply nozzle are respectively arranged at the liquid outlet end of the first and second sequence lathe mixers. The first liquid supply nozzle, the second liquid supply nozzle and the first and second sequence lathe liquid supply nozzles are respectively provided with solenoid valves at the liquid inlets.

[0022] A second aspect of the present invention provides a cutting fluid circulation injection method, comprising the cutting fluid circulation injection device, and specifically comprising the following steps:

[0023] The tap water is mixed with the cutting fluid accumulated in the chip conveyor of the machining center to obtain a first mixed liquid;

[0024] The tap water is mixed with the cutting fluid accumulated in the chip conveyor of the first and second sequence lathes to obtain a second mixed liquid;

[0025] The first mixed liquid is sprayed through the working device of the machining center;

[0026] The second mixed liquid is sprayed through the first and second sequence lathe operation device;

[0027] The first mixed liquid after spraying returns to the chip conveyor of the machining center, and circulates to the chip conveyor of the first and second sequence lathes through the cutting fluid circulation device;

[0028] The sprayed second mixed liquid is circulated to the chip conveyor of the first and second sequence lathes through the cutting fluid circulation device.

[0029] In the cutting fluid circulation injection method, preferably, the step of "injecting the first mixed liquid through a machining center operating device" specifically includes:

[0030] The processing center filtering device filters the first mixed liquid;

[0031] The filtered first mixed liquid enters the machining center mixer through the machining center liquid supply pump, the machining center gear pump pumps lubricant into the machining center mixer, the lubricant and the first mixed liquid are mixed through the machining center mixer, the machining center mixer supplies liquid to the machining center liquid supply nozzle, and the machining center liquid supply nozzle realizes spraying.

[0032] In the cutting fluid circulation injection method, preferably, the step of "injecting the second mixed liquid through a first-second sequence lathe operation device" specifically includes:

[0033] The first and second sequence lathe filter device filters the second mixed liquid;

[0034] The filtered second mixed liquid enters the first and second sequence lathe mixer through the first and second sequence lathe liquid supply pump. The first and second sequence lathe gear pump pumps lubricant into the first and second sequence lathe mixer. The lubricant and the second mixed liquid are mixed through the first and second sequence lathe mixer, and the first and second sequence lathe liquid supply nozzle realizes the spraying.

[0035] The present invention adopts the above technical solution, which has the following advantages:

[0036] 1. The accumulated liquid in the chip conveyor of the machining center and the accumulated liquid chip conveyor of the first and second sequence lathes is first mixed with tap water, and the tap water mixing device is set at the liquid outlet of the chip conveyor of the machining center and the liquid outlet of the first and second sequence lathes, so that the working fluid in the chip conveyor of the machining center and the liquid chip conveyor of the first and second sequence lathes is in a laminar state to form a concentration gradient, and the chips brought out by the chip conveyor of the machining center and the liquid chip conveyor of the first and second sequence lathes are cleaned with tap water to reduce pollutants during subsequent chip re-refining. At the same time, the concentration of the working fluid taken away by the chip conveyor of the machining center and the liquid chip conveyor of the first and second sequence lathes is reduced, and the loss of working fluid is reduced, so as to better recover the accumulated liquid and perform subsequent filtration.

[0037] 2. Since the machining center operating device and the first and second sequence lathe operating device have different concentration requirements for the working fluid, the return working fluid with the concentration reduced by tap water can meet the concentration requirements of the first and second sequence lathe operating device.

[0038] 3. In the present application, the mixer of the processing center adopts a venturi tube and a kneading tube, the branch of the venturi tube is set to zero negative pressure, and the supply amount of the raw liquid is controlled by the liquid supply pump of the processing center.

[0039] 4. The concept of minimal lubrication in fine turning is applied to rough turning.

[0040] The present invention solves the problem of working fluid deterioration caused by excessive storage of liquid in a large-capacity liquid tank equipped with a machine tool, long-term storage, and poor fluidity. The circulation system and liquid-mist mixed injection reduce the amount of liquid used in the entire processing process, so that the machine tool does not need to be equipped with a large-capacity liquid tank to store liquid, fundamentally solving the problem of working fluid easily deteriorating due to excessive storage of working fluid in the field of rough turning. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the structure of the present invention.

[0042] In the figure:

[0043] 1. Tap water supply pipeline; 2. First solenoid valve; 3. First needle valve; 4. Processing center filter device;

[0044] 5. Liquid supply pump for machining center; 6. Mixer for machining center; 7. Gear pump for machining center; 8. Solenoid valve for machining center;

[0045] 9. Liquid supply nozzle of machining center; 10. Reflux liquid collection port of machining center; 11. Second solenoid valve;

[0046] 12. Second needle valve; 13. Filter device for first and second sequence lathes; 14. Liquid supply pump for first and second sequence lathes;

[0047] 15. Mixer for first and second sequence lathes; 16. Gear pump for first and second sequence lathes; 17. Solenoid valve for first and second sequence lathes;

[0048] 18. First and second sequence lathe liquid supply nozzle; 19. Third solenoid valve; 20. First liquid supply nozzle; 21. Fourth solenoid valve;

[0049] 22. The second liquid supply nozzle; 23. The reflux liquid collection port of the first and second sequence lathes; 24. The fifth solenoid valve;

[0050] 25. The third needle valve; 26. The first liquid level gauge; 27. The second liquid level gauge; 28. The chip conveyor of the machining center;

[0051] 29. Chip conveyor for first and second sequence lathes; 30. Circulation pipeline. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 work are within the scope of protection of the present invention.

[0053] The present invention provides a cutting fluid circulation injection device, including a tap water supply device, a machining center chip conveyor, a first- and second-sequence lathe chip conveyor, and a cutting fluid circulation device, wherein the tap water supply device is connected to the machining center chip conveyor and the first- and second-sequence lathe chip conveyor, respectively, and the tap water supply device is located at the liquid outlet of the machining center chip conveyor and the first- and second-sequence lathe chip conveyor, the liquid inlet end of the cutting fluid circulation device is connected to the liquid collection port of the machining center chip conveyor and the liquid collection port of the first- and second-sequence lathe chip conveyor, and the liquid outlet end of the cutting fluid circulation device is connected to the first- and second-sequence lathe chip conveyor, so as to realize that the cutting fluid collected at the liquid collection port of the machining center chip conveyor and the liquid collection port of the first- and second-sequence lathe chip conveyor is circulated to the first- and second-sequence lathe chip conveyor through the cutting fluid circulation device. The present invention solves the problem of deterioration of the working fluid caused by excessive liquid storage, long-term storage, and poor circulation in the large-capacity liquid tank equipped with the machine tool.

[0054] Example 1

[0055] Reference Figure 1As shown, the present invention provides a cutting fluid circulation injection device, including a tap water supply device, a machining center chip conveyor 28, a first- and second-sequence lathe chip conveyor 29 and a cutting fluid circulation device, wherein the tap water supply device is connected to the machining center chip conveyor 28 and the first- and second-sequence lathe chip conveyor 29, respectively, and the tap water supply device is located at the liquid outlet of the machining center chip conveyor 28 and the first- and second-sequence lathe chip conveyor 29, the liquid inlet end of the cutting fluid circulation device is connected to the machining center chip conveyor 28 and the first- and second-sequence lathe chip conveyor 29, and the liquid outlet end of the cutting fluid circulation device is connected to the first- and second-sequence lathe chip conveyor 29, so as to realize that the cutting fluid collected at the liquid collection port 10 of the machining center chip conveyor and the liquid collection port 23 of the first- and second-sequence lathe is circulated to the first- and second-sequence lathe chip conveyor 29 through the cutting fluid circulation device.

[0056] Continue to refer to Figure 1 The tap water supply device includes a tap water supply pipeline 1 and a first valve assembly, the second valve assembly includes a first liquid level gauge 26, a second liquid level gauge 27, a first solenoid valve 2, a second solenoid valve 11, a first needle valve 3 and a second needle valve 12, the tap water supply pipeline 1 is respectively connected to the liquid inlet of the machining center chip conveyor 28 and the liquid inlet of the first- and second-sequence lathe chip conveyor 29, a first liquid level gauge 26 is provided in the machining center chip conveyor 28, a second liquid level gauge 27 is provided in the first- and second-sequence lathe chip conveyor 29, a first needle valve 3 and a first solenoid valve 2 are arranged in sequence along the liquid flow direction at the liquid inlet of the machining center chip conveyor 28, and a second needle valve 12 and a second solenoid valve 11 are arranged in sequence along the liquid flow direction at the liquid inlet of the first- and second-sequence lathe chip conveyor 29.

[0057] Continue to refer to Figure 1 The cutting fluid circulation device includes a circulation pipeline 30 and a second valve assembly, the second valve assembly includes a fifth solenoid valve 24 and a third needle valve 25, the liquid inlet end of the circulation pipeline 30 is respectively connected to the reflux liquid collecting port 10 of the machining center chip conveyor and the reflux liquid collecting port 23 of the first- and second-sequence lathe chip conveyor, the liquid outlet end of the circulation pipeline 30 is arranged inside the first- and second-sequence lathe chip conveyor 29, so that the cutting fluid recovered from the reflux liquid collecting port 10 of the machining center chip conveyor and the reflux liquid collecting port 23 of the first- and second-sequence lathe chip conveyor is circulated to the first- and second-sequence lathe chip conveyor 29, and the liquid outlet end of the circulation pipeline 30 arranges the third needle valve 25 and the fifth solenoid valve 24 in sequence along the liquid flow direction.

[0058] Continue to refer to Figure 1 The cutting fluid circulation injection device of the present invention also includes a machining center operating device and a one-two sequence lathe operating device. The machining center operating device is connected to the machining center chip conveyor 28, and the one-two sequence lathe operating device is connected to the one-two sequence lathe chip conveyor 29.

[0059] Among them, the machining center operating device includes a machining center filter device 4, a machining center liquid supply pump 5, a machining center mixer 6, a machining center gear pump 7, a machining center solenoid valve 8 and a machining center liquid supply nozzle 9. The machining center filter device 4 is arranged in the machining center chip conveyor, and the machining center filter device 4 is located before the liquid inlet end of the machining center liquid supply pump 5, so that the cutting fluid filtered by the machining center filter device 4 enters the liquid inlet end of the machining center liquid supply pump 5, the liquid outlet end of the machining center liquid supply pump 5 is connected to the liquid inlet end of the machining center mixer 6, the machining center gear pump 7 is provided on the machining center mixer 6, the liquid outlet end of the machining center mixer 6 is connected to the machining center liquid supply nozzle 9, and the liquid outlet end of the machining center mixer 6 is provided with a machining center solenoid valve 8.

[0060] Among them, the machining center mixer 6 includes a venturi tube and a kneading tube, the kneading tube is a static mixer, the liquid outlet end of the machining center liquid supply pump 5 is connected to the liquid inlet of the venturi tube, the liquid outlet of the venturi tube is connected to the liquid inlet of the static mixer, and the liquid outlet of the static mixer is connected to the machining center liquid supply nozzle 9.

[0061] The inlet of the tributary of the venturi is at zero pressure, which is convenient for the machining center liquid supply pump 5 to control the liquid supply of the venturi (the inlet of the tributary of the venturi is normally at negative pressure, sucking the liquid or gas in the tributary). Since the sprayed working fluid requires the original liquid to be fully mixed with the working fluid in the chip conveyor, the venturi alone cannot achieve this function, and a static mixer is required to assist in the full mixing of the two.

[0062] The one-two lathe operation device includes a one-two lathe filter device 13, a one-two lathe liquid supply pump 14, a one-two lathe mixer 15, a one-two lathe gear pump 16, a one-two lathe solenoid valve 17, a one-two lathe liquid supply nozzle 18, a third solenoid valve 19 and a liquid mist mixing injection device. The one-two lathe filter device 13 is arranged in the one-two lathe chip conveyor, and the one-two lathe filter device 13 is located in the one-two lathe. Before the liquid inlet end of the liquid supply pump 14, the cutting fluid filtered by the first- and second-sequence lathe filter device 13 enters the liquid inlet end of the first- and second-sequence lathe liquid supply pump 14. The liquid outlet end of the first- and second-sequence lathe liquid supply pump 14 is connected to the liquid inlet end of the first- and second-sequence lathe mixer 15. The first- and second-sequence lathe mixer 15 is provided with a first- and second-sequence lathe gear pump 16. The liquid outlet end of the first- and second-sequence lathe mixer 15 is respectively connected to the first- and second-sequence lathe liquid supply nozzle 18 and the liquid mist mixing injection device.

[0063] The liquid mist mixing injection device includes a first liquid supply nozzle 20 and a second liquid supply nozzle 22, and the first liquid supply nozzle 20 and the second liquid supply nozzle 22 are respectively arranged at the liquid outlet end of the first and second sequence lathe mixer 15. Further, the first liquid supply nozzle 20, the second liquid supply nozzle 22 and the first and second sequence lathe liquid supply nozzle 18 are connected to the liquid outlet end of the first and second sequence lathe mixer 15 through a three-way connecting pipe, and the liquid inlet of the first liquid supply nozzle 20, the second liquid supply nozzle 22 and the first and second sequence lathe liquid supply nozzle 18 are respectively provided with a third solenoid valve 19, a fourth solenoid valve 21 and a first and second sequence lathe solenoid valve 17.

[0064] Among them, the first liquid supply nozzle 20, the second liquid supply nozzle 22 and the first and second sequence lathe liquid supply nozzles 18 can all be adjusted to mist spray, and can also be adjusted to water column spray.

[0065] Example 2

[0066] A cutting fluid circulation injection method specifically comprises the following steps:

[0067] Among them, the working processes of the machining center operating device and the first and second sequence lathe operating device are not in order, that is, step S1 and step S2 are not in order.

[0068] S1: tap water is mixed with the cutting fluid accumulated in the chip conveyor 28 of the machining center to obtain a first mixed liquid.

[0069] S11: The first mixed liquid is sprayed through the machining center operating device.

[0070] S12: The processing center filtering device 4 filters the first mixed liquid.

[0071] S13: The filtered first mixed liquid enters the machining center mixer 6 through the machining center liquid supply pump 5, the machining center gear pump 7 pumps lubricant into the machining center mixer 6, the lubricant and the first mixed liquid are mixed through the machining center mixer 6, the machining center mixer 6 supplies liquid to the machining center liquid supply nozzle 9, and the machining center liquid supply nozzle 9 realizes spraying.

[0072] S14: The first mixed liquid after injection returns to the liquid collection port 10 of the chip conveyor of the machining center, and circulates to the chip conveyor 29 of the first and second lathes through the cutting fluid circulation device.

[0073] S2: The tap water is mixed with the cutting fluid accumulated in the chip conveyor 29 of the first and second sequence lathe to obtain a second mixed liquid.

[0074] S21: The second mixed liquid is sprayed through the first and second sequence lathe operation device.

[0075] S22: The first and second lathe filtering device 13 filters the second mixed liquid.

[0076] S23: The filtered second mixed liquid enters the first-second lathe mixer 15 through the first-second lathe liquid supply pump 14, the first-second lathe gear pump pumps lubricant into the first-second lathe mixer 15, the lubricant and the second mixed liquid are mixed through the first-second lathe mixer 15, the first-second lathe mixer 15 supplies liquid to the first-second lathe liquid supply nozzle 18, and the first-second lathe liquid supply nozzle 18 realizes spraying.

[0077] S24: The sprayed second mixed liquid is circulated to the chip conveyor 29 of the first and second lathes through the cutting fluid circulation device.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cutting fluid circulation injection device, characterized in that: It includes a tap water supply device, a machining center chip conveyor, a first- and second-sequence lathe chip conveyor and a cutting fluid circulation device. The tap water supply device is connected to the machining center chip conveyor and the first- and second-sequence lathe chip conveyors respectively, and the tap water supply device is located at the fluid outlet of the machining center chip conveyor and the first- and second-sequence lathe chip conveyors. The fluid inlet end of the cutting fluid circulation device is connected to the fluid collection port of the machining center chip conveyor and the fluid collection port of the first- and second-sequence lathe chip conveyor, and the fluid outlet end of the cutting fluid circulation device is connected to the first- and second-sequence lathe chip conveyor, so as to realize that the cutting fluid collected at the fluid collection port of the machining center chip conveyor and the fluid collection port of the first- and second-sequence lathe chip conveyor is circulated to the first- and second-sequence lathe chip conveyor through the cutting fluid circulation device.

2. The cutting fluid circulation injection device according to claim 1, characterized in that: The tap water supply device includes a tap water supply pipeline, a liquid level meter and a first valve assembly. The tap water supply pipeline is respectively connected to the liquid inlet of the machining center chip conveyor and the liquid inlet of the first- and second-sequence lathe chip conveyor, and the first valve assembly is provided at the liquid inlet of the machining center chip conveyor and the liquid inlet of the first- and second-sequence lathe chip conveyor. The liquid level meter is provided in both the machining center chip conveyor and the first- and second-sequence lathe chip conveyor.

3. The cutting fluid circulation injection device according to claim 2, characterized in that: The cutting fluid circulation device includes a circulation pipeline and a second valve assembly. The liquid inlet end of the circulation pipeline is respectively connected to the reflux liquid collecting port of the machining center chip conveyor and the reflux liquid collecting port of the first- and second-sequence lathe chip conveyor. The liquid outlet end of the circulation pipeline is arranged inside the first- and second-sequence lathe chip conveyor to realize the circulation of the cutting fluid recovered by the reflux liquid collecting port of the machining center chip conveyor and the reflux liquid collecting port of the first- and second-sequence lathe chip conveyor to the first- and second-sequence lathe chip conveyor. The liquid outlet end of the circulation pipeline is provided with the second valve assembly.

4. The cutting fluid circulation injection device according to claim 3, characterized in that: The first valve assembly and the second valve assembly both include a solenoid valve and a needle valve, which are arranged in sequence along the direction of liquid flow at the liquid inlet of the machining center chip conveyor, the liquid inlet of the first- and second-sequence lathe chip conveyor, and the liquid outlet end of the circulation pipeline.

5. The cutting fluid circulation injection device according to any one of claims 1 to 4, characterized in that: It also includes a machining center operating device and a one-two sequence lathe operating device. The machining center operating device is connected to the machining center chip conveyor, and the one-two sequence lathe operating device is connected to the one-two sequence lathe chip conveyor.

6. The cutting fluid circulation injection device according to claim 5, characterized in that: The machining center operation device includes a machining center filter device, a machining center liquid supply pump, a machining center mixer, a machining center gear pump, a machining center solenoid valve and a machining center liquid supply nozzle. The machining center filter device is arranged in the machining center chip conveyor, and the machining center filter device is located before the liquid inlet end of the machining center liquid supply pump, so that the cutting fluid filtered by the machining center filter device enters the liquid inlet end of the machining center liquid supply pump, the liquid outlet end of the machining center liquid supply pump is connected to the liquid inlet end of the machining center mixer, the machining center gear pump is arranged on the machining center mixer, the liquid outlet end of the machining center mixer is connected to the machining center liquid supply nozzle, and the machining center solenoid valve is arranged at the liquid outlet end of the machining center mixer; The machining center mixer includes a venturi tube and a kneading tube, the kneading tube is a static mixer, the liquid outlet end of the machining center liquid supply pump is connected to the liquid inlet of the venturi tube, the liquid outlet of the venturi tube is connected to the liquid inlet of the static mixer, and the liquid outlet of the static mixer is connected to the machining center liquid supply nozzle.

7. The cutting fluid circulation injection device according to claim 5, characterized in that: The one-two sequence lathe operation device comprises a one-two sequence lathe filter device, a one-two sequence lathe liquid supply pump, a one-two sequence lathe mixer, a one-two sequence lathe gear pump, a one-two sequence lathe liquid supply nozzle and a liquid mist mixing injection device, wherein the one-two sequence lathe filter device is arranged in the one-two sequence lathe chip conveyor, and the one-two sequence lathe filter device is located before the liquid inlet end of the one-two sequence lathe liquid supply pump, so as to realize that the cutting fluid filtered by the one-two sequence lathe filter device enters the liquid inlet end of the one-two sequence lathe liquid supply pump, the liquid outlet end of the one-two sequence lathe liquid supply pump is connected to the liquid inlet end of the one-two sequence lathe mixer, the one-two sequence lathe mixer is provided with the one-two sequence lathe gear pump, and the liquid outlet end of the one-two sequence lathe mixer is connected to the one-two sequence lathe liquid supply nozzle; The liquid mist mixing injection device includes a first liquid supply nozzle and a second liquid supply nozzle. The first liquid supply nozzle and the second liquid supply nozzle are respectively arranged at the liquid outlet end of the first and second sequence lathe mixers. The first liquid supply nozzle, the second liquid supply nozzle and the first and second sequence lathe liquid supply nozzles are respectively provided with solenoid valves at the liquid inlets.

8. A cutting fluid circulation injection method, characterized in that: The cutting fluid circulation injection device according to any one of claims 1 to 7 specifically comprises the following steps: The tap water is mixed with the cutting fluid accumulated in the chip conveyor of the machining center to obtain a first mixed liquid; The tap water is mixed with the cutting fluid accumulated in the chip conveyor of the first and second sequence lathes to obtain a second mixed liquid; The first mixed liquid is sprayed through the working device of the machining center; The second mixed liquid is sprayed through the first and second sequence lathe operation device; The first mixed liquid after spraying returns to the chip conveyor of the machining center, and circulates to the chip conveyor of the first and second sequence lathes through the cutting fluid circulation device; The sprayed second mixed liquid is circulated to the chip conveyor of the first and second sequence lathes through the cutting fluid circulation device.

9. The cutting fluid circulation injection method according to claim 8, characterized in that: The step of "spraying the first mixed liquid through the machining center operating device" specifically includes: The processing center filtering device filters the first mixed liquid; The filtered first mixed liquid enters the machining center mixer through the machining center liquid supply pump, the machining center gear pump pumps lubricant into the machining center mixer, the lubricant and the first mixed liquid are mixed through the machining center mixer, the machining center mixer supplies liquid to the machining center liquid supply nozzle, and the machining center liquid supply nozzle realizes spraying.

10. The cutting fluid circulation injection method according to claim 8, characterized in that: The step of "spraying the second mixed liquid through a first-second sequence lathe operation device" specifically includes: The first and second sequence lathe filter device filters the second mixed liquid; The filtered second mixed liquid enters the first and second sequence lathe mixer through the first and second sequence lathe liquid supply pump. The first and second sequence lathe gear pump pumps lubricant into the first and second sequence lathe mixer. The lubricant and the second mixed liquid are mixed through the first and second sequence lathe mixer, and the first and second sequence lathe liquid supply nozzle realizes the spraying.

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