A method for treating machine tool swarf fluid

Abstract

The application discloses a processing method of machine tool chip liquid, and belongs to the technical field of machine tool chip liquid processing. The processing method of the application carries out secondary processing on the machine tool chip liquid between the secondary filtration, and then uses the central water outlet pump to continuously pump the secondary filtrate into the machine tool main shaft water supply pipeline for the use of the machine tool main shaft. The waste liquid is mixed into the chip liquid after flowing out of the machine tool main shaft and is discharged from the machine tool chip outlet, thereby connecting the circulating flow path of the machine tool main shaft liquid, realizing the filtration and use of the machine tool main shaft liquid; and the cooling pump and the chip flushing pump connect the circulating loop of the first filtrate, machine tool cooling and chip flushing, chip liquid generation, filtration and first filtrate generation. The application can centrally and hierarchically process the machine tool output chip liquid, recycle the machine tool output chip liquid, and meet the liquid supply requirements of different precision of multiple parts of the machine tool. The application solves the problem that the chain plate type or scraper type chip removal device, backflushing drum chip removal machine and other devices cannot completely remove the chip liquid of the machine tool and cannot process other impurities.

Description

[0001] This invention application is a divisional application, with parent application number: 2018101643783; parent application title: A machine tool chip fluid treatment device and treatment method thereof; parent application date: 2018-02-28. Technical Field

[0002] This invention belongs to the field of machine tool cutting fluid treatment technology, specifically a method for treating machine tool cutting fluid. Background Technology

[0003] In recent years, with the rapid development of the processing and manufacturing industry, the technological development of machine tools and machine tool accessories has also accelerated. Less labor, lower cost, stronger functionality, and environmental friendliness are all characteristics that these devices urgently need to possess. Among them, in the treatment of machine tool cutting fluid and the recycling of metal scrap, chain plate or scraper chip conveyor devices and backflushing roller chip conveyors are often used to filter and remove chips from the machine tool cutting fluid.

[0004] Traditional chip removal devices can only remove larger metal chips from the machine tool cutting fluid, but cannot remove smaller metal chips. The chip removal is incomplete, and they can only remove metal chips from the cutting fluid, leaving other impurities untouched. Their function is limited. The treated cutting fluid has a high impurity content, poor recycling effect, and a significant impact on the lifespan and machining accuracy of the machine tool itself.

[0005] Chinese Patent Application No. 200820234027.7, Publication Date: November 11, 2009, discloses a composite chip removal and filtration device, including a housing, a chain plate chip removal device, a scraper chip removal device, and a backwash drum filter device. The housing is composed of upper and lower platform cavities and a ramp cavity. The upper platform cavity is provided with a chip discharge port. The housing is provided with a first and a second bottom plate. The chain plate chip removal device is set on the first bottom plate, and the second bottom plate is set on the lower end of the lower scraper of the scraper chip removal device. The backwash drum filter device is placed in the ramp cavity and includes a drum drive sprocket, a filter screen, a liquid outlet cap, and a chip flushing pipe. The drum drive sprocket is screwed to the front and rear ends of the filter screen respectively. The drum drive sprocket is engaged with the chain of the scraper chip removal device. The liquid outlet cap is provided with a liquid outlet hole. One end of the chip flushing pipe passes through the rear drum drive sprocket and is connected and fixed to the housing. Several nozzles are provided on the wall of the chip flushing pipe placed in the inner cavity of the filter screen. This invention thoroughly removes chips, but its function is limited and it cannot remove other impurities from the waste liquid.

[0006] Chinese Patent Application No. 201620155595.2, Publication Date: July 27, 2016, discloses a cleaning fluid fine filtration device, including a water tank with a wastewater tank, a primary cleaning tank, and a secondary cleaning tank, and a backwash filter chip conveyor, a vortex separator, a bag filter, and a filter transfer pump located on the upper part of the water tank. The backwash filter chip conveyor is used to filter the cleaning fluid in the wastewater tank and discharge it to the primary cleaning tank. The filter transfer pump is used to draw the cleaning fluid from the primary cleaning tank to the vortex separator. The bag filter is used to filter the cleaning fluid discharged from the vortex separator to the secondary cleaning tank. This utility model has high filtration accuracy and thorough impurity separation. However, when applied to machine tool chip fluid treatment, it cannot remove liquid impurities such as oil stains from the chip fluid. The chip fluid deteriorates after being in the water tank for a long time, and the temperature of the filtered chip fluid is too high, making it unsuitable for direct use in machine tool cooling and chip flushing. Summary of the Invention

[0007] The technical problem that the invention aims to solve

[0008] To address the problems of incomplete chip removal and inability to handle other impurities in machine tool cutting fluid using existing chain-plate or scraper-type chip conveyors and backflushing roller chip conveyors, this invention provides a method for treating machine tool cutting fluid. By incorporating a roller chip conveyor, oil cooler, and oil-water separator, the cutting fluid is filtered, cooled, and recycled. The filtration accuracy is high, and the filtered cutting fluid can be directly used for machine tool cooling and chip flushing. Furthermore, the cutting fluid does not easily deteriorate in the water tank.

[0009] Technical solution

[0010] To solve the above problems, the technical solution provided by the present invention is as follows:

[0011] A machine tool cutting fluid treatment device includes a water tank. A chip receiving trough and a roller chip conveyor are connected in the middle of the water tank. The chip receiving trough receives the cutting fluid discharged from the machine tool's chip outlet and guides it into the roller chip conveyor. The roller chip conveyor uses a backwash roller to filter and remove chips from the cutting fluid, producing primary filtrate. The chip receiving trough and the roller chip conveyor divide the water tank into a right chamber and a left chamber. The right and left chambers are connected by a channel between the outer wall of the chip receiving trough and the side wall of the water tank. After filtration by the roller chip conveyor, the cutting fluid produces primary filtrate which enters the right chamber. The filtration accuracy is 150μm; the outlet of the drum chip conveyor is connected to the right chamber; the right chamber is equipped with an oil cooler and an oil-water separator. The oil cooler is located near the liquid inlet of the right chamber, and the oil-water separator is located on the side of the oil cooler away from the liquid inlet of the right chamber. After the primary filtrate enters the right chamber, it is first cooled by the oil cooler and then the oil is removed by the oil-water separator. After the oil is removed by the oil-water separator, the primary filtrate flows from the right chamber into the left chamber through the channel set between the outer wall of the chip receiving trough and the side wall of the water tank, for machine tool cooling and chip flushing.

[0012] Furthermore, a cooling pump and a chip flushing pump for supplying water to the machine tool are installed on the left chamber. The inlets of the cooling pump and the chip flushing pump are both connected to the left chamber. The cooling pump and the chip flushing pump extract the primary filtrate from the left chamber and deliver it to the machine tool's cooling and chip flushing system for cooling and chip flushing of the machine tool's machining parts.

[0013] Furthermore, a backwash pump is also installed on the left chamber. The inlet of the backwash pump is connected to the primary filtrate in the left chamber, and the outlet is connected to the drum chip conveyor. The backwash pump draws out the primary filtrate in the left chamber and transports it to the drum chip conveyor to flush the filter screen on the surface of the backwash drum inside the drum chip conveyor, preventing the filter screen from becoming clogged due to the accumulation of metal debris.

[0014] Furthermore, an oxygenation pump is installed on the right chamber. The exhaust port of the oxygenation pump is connected to the primary filtrate in the right chamber after oil removal, and the air inlet is connected to the outside. The oxygenation pump is used to introduce air into the primary filtrate to increase the dissolved oxygen content in the primary filtrate and prevent the primary filtrate from decomposing and smelling bad in an oxygen-free environment.

[0015] Furthermore, it also includes a vortex separator and a secondary water tank. The vortex separator is located at the upper end of the chip collection trough. The liquid inlet of the vortex separator is connected to the water outlet of the backwash pump, the slag outlet leads into the chip collection trough, and the liquid outlet is connected to the secondary water tank, which is located on one side of the water tank. The backwash pump outputs liquid in two ways: one way supplies the drum chip conveyor for backwashing and chip removal; the other way enters the vortex separator through its liquid inlet, filters out impurities, and produces secondary filtrate with a filtration accuracy of 20μm. The impurities include metal chips and other solid particles. The impurities are discharged into the chip collection trough through the slag outlet of the vortex separator and enter the drum chip conveyor for filtration and chip removal along with the cutting liquid in the chip collection trough. The secondary filtrate is discharged into the secondary water tank through the liquid outlet of the vortex separator and supplied to the machine tool spindle.

[0016] Furthermore, a central outlet pump is installed on the secondary water tank. The inlet of the central outlet pump is connected to the secondary filtrate in the secondary water tank, and the outlet is connected to the machine tool spindle water supply pipeline. The central outlet pump can continuously pump the secondary filtrate into the machine tool spindle water supply pipeline for use by the machine tool spindle.

[0017] Furthermore, a low-level alarm is also installed on the secondary water tank, which is used to sound an alarm when the liquid level in the secondary water tank is too low or too high.

[0018] Furthermore, a filter element is installed in the secondary water tank and is located at the inlet of the central water pump. The filter element is immersed in the secondary filtrate. When the central water pump draws the secondary filtrate, the secondary filtrate is first filtered by the filter element and then supplied to the machine tool spindle by the central water pump to prevent the primary filtrate from directly entering the machine tool spindle due to damage or failure of the previous filter.

[0019] Furthermore, the secondary water tank is located on one side of the left chamber, and a partition is installed between the secondary water tank and the left chamber. An overflow outlet is installed above the partition. The secondary water tank and the left chamber are connected through the overflow outlet. After the secondary water tank is full of secondary filtrate, the excess secondary filtrate overflows from the overflow outlet into the left chamber and mixes with the primary filtrate.

[0020] A method for treating machine tool cutting fluid using one or more machine tool cutting fluid treatment devices, comprising the following steps:

[0021] Step 1: Discharge the cutting fluid from the chip outlet of the machine tool into the chip collection groove, and then guide it into the drum chip conveyor for filtration and chip removal to produce primary filtrate.

[0022] Step 2: The primary filtrate flows into the right chamber of the water tank through the outlet of the drum chip conveyor for secondary treatment.

[0023] A. The primary filtrate first flows through an oil cooler to cool down;

[0024] B. After cooling, use an oil-water separator to separate and discharge the oil from the primary filtrate.

[0025] C. Use an oxygenation pump to introduce air into the primary filtrate;

[0026] Step 3: The primary filtrate after secondary treatment is introduced into the left chamber of the water tank through the channel between the outer wall of the chip collection tank and the side wall of the water tank.

[0027] Step 4: Use the cooling pump and chip flushing pump to extract the primary filtrate from the left chamber and supply it to the machine tool for chip flushing and cooling. After use, the generated cutting fluid is discharged from the machine tool's chip outlet into the chip collection tank.

[0028] Step 5: Use a backwash pump to extract the primary filtrate from the left chamber. The backwash pump has two outlets: one supplying the drum chip conveyor for backwashing and the other supplying the eddy current separator.

[0029] Step 6: The primary filtrate is filtered by a vortex separator to separate impurities and produce secondary filtrate;

[0030] Step 7: The secondary filtrate flows into the secondary water tank through the pipeline, while impurities enter the chip collection tank and enter the drum chip conveyor for filtration and chip removal along with the cutting liquid in the chip collection tank.

[0031] Step 8: The secondary filtrate is filtered again by the filter element and then pumped out by the central water pump to supply the machine tool spindle.

[0032] Beneficial effects

[0033] Compared with the prior art, the technical solution provided by this invention has the following advantages:

[0034] (1) The present invention provides a machine tool cutting fluid treatment device and treatment method, which can achieve fine filtration of machine tool cutting fluid by means of a drum chip conveyor to produce primary filtrate with a filtration accuracy of up to 150μm; the oil cooler can be used to cool the primary filtrate first to increase the viscosity of the oil and increase the degree of oil-water separation, which is convenient for subsequent oil removal; the oil-water separator can remove the oil in the primary filtrate to avoid the oil from fermenting and deteriorating in the water tank, thereby avoiding secondary pollution;

[0035] (2) The present invention provides a machine tool cutting fluid treatment device and its treatment method. The cooling pump and the chip flushing pump are both installed on the left chamber, which can save installation space, improve the space utilization rate of the production workshop, and reduce production costs. In addition, the cooling pump and the chip flushing pump are connected to the circulation loop from primary filtrate → machine tool cooling, chip flushing → generating cutting fluid → filtering to generate primary filtrate, realizing the uninterrupted recycling of cutting fluid.

[0036] (3) The present invention provides a machine tool chip fluid treatment device and treatment method, which is equipped with a backflush pump. The backflush pump extracts the primary filtrate in the left chamber and transports it to the drum chip conveyor to flush the filter screen on the surface of the backflush drum in the drum chip conveyor, so as to prevent the filter screen mesh from being blocked due to the deposition of metal chips.

[0037] (4) The present invention provides a machine tool cutting fluid treatment device and treatment method, which is equipped with an oxygenation pump. The oxygenation pump is used to input air into the primary filtrate to increase the dissolved oxygen content in the primary filtrate and prevent the primary filtrate from deteriorating and smelling bad in an oxygen-free environment.

[0038] (5) The present invention provides a machine tool cutting fluid treatment device and its treatment method, which can perform secondary filtration of cutting fluid through the eddy current separator and the secondary water tank, and can adapt to the different precision requirements of the liquid supply in multiple parts of the machine tool, realizing the graded treatment and tiered zoned utilization of machine tool cutting fluid;

[0039] (6) The present invention provides a machine tool cutting fluid treatment device and its treatment method, which uses a central water pump to continuously pump the secondary filtrate into the machine tool spindle water supply pipeline for use by the machine tool spindle, connects the circulation path of the machine tool spindle fluid, and realizes the immediate filtration and use of the machine tool spindle fluid;

[0040] (7) The present invention provides a machine tool cutting fluid treatment device and treatment method, wherein a low liquid level alarm is also provided on the secondary water tank, which realizes real-time monitoring and alarm of the liquid level in the secondary water tank, thereby improving the safety of the equipment.

[0041] (8) The present invention provides a machine tool cutting fluid treatment device and treatment method, wherein a filter element is provided at the inlet of the central water pump to prevent the first-stage filtrate from directly entering the machine tool spindle due to damage or failure of the previous filter, thereby avoiding damage to the machine tool spindle;

[0042] (9) The present invention provides a machine tool cutting fluid treatment device and treatment method, wherein a partition is provided between the secondary water tank and the left chamber, and an overflow port is provided above the partition. After the secondary water tank is filled with secondary filtrate, the excess secondary filtrate overflows from the overflow port into the left chamber and mixes with the primary filtrate, thereby protecting the secondary water tank and its upstream equipment and improving the safety of the equipment.

[0043] (10) The present invention provides a machine tool cutting fluid treatment device and treatment method, which can realize the recycling of machine tool cutting fluid, reduce water costs, and avoid environmental pollution;

[0044] (11) The present invention provides a method for treating machine tool cutting fluid, which can centrally classify and process the cutting fluid output by the machine tool, recycle it, has a good filtration effect, and is widely applicable; and can meet the different precision requirements of the liquid supply in multiple parts of the machine tool. Attached Figure Description

[0045] Figure 1 A schematic diagram of the structure of the present invention;

[0046] Figure 2 Top view of the present invention;

[0047] Figure 3 The left view of the present invention;

[0048] Figure 4 A front view of the present invention;

[0049] Figure 5 A schematic diagram of the structure of the secondary water tank in this invention.

[0050] In the attached diagram: 1. Chip receiving trough; 2. Drum chip conveyor; 3. Oil cooler; 4. Oil-water separator; 5. Aeration pump; 6. Cooling pump; 7. Chip flushing pump; 8. Vortex separator; 9. Secondary water tank; 10. Water tank; 11. Central control cabinet; 21. Backflush pump; 91. Low liquid level alarm; 92. Central outlet pump; 93. Overflow port; 94. Baffle plate; 95. Filter element; 100. Outer wall of chip receiving trough; 101. Right chamber; 102. Left chamber. Detailed Implementation

[0051] To further understand the content of this invention, a detailed description of the invention will be provided in conjunction with the accompanying drawings and embodiments.

[0052] Example 1

[0053] A machine tool cutting fluid treatment device, such as Figure 1 , 2As shown, the system includes a water tank 10, with a chip collection trough 1 and a rotary chip conveyor 2 connected in the middle. The chip collection trough 1 receives the cutting fluid discharged from the machine tool's chip outlet and guides it into the rotary chip conveyor 2. The rotary chip conveyor 2 uses a backwash roller to filter and remove chips from the cutting fluid, producing primary filtrate. The chip collection trough 1 and the rotary chip conveyor 2 divide the water tank 10 into a right chamber 101 and a left chamber 102, which are connected by a channel between the outer wall 100 of the chip collection trough and the side wall of the water tank 10. The outlet of the rotary chip conveyor 2 is connected to the right chamber 101. After the cutting fluid is filtered by the rotary chip conveyor 2, it produces primary filtrate and enters the right chamber. The right chamber 101 has a filtration accuracy of 150μm, resulting in less metal debris entering the right chamber 101. The right chamber 101 is equipped with an oil cooler 3 and an oil-water separator 4. The oil cooler 3 is positioned near the liquid inlet of the right chamber 101, while the oil-water separator 4 is located on the side of the oil cooler 3 away from the liquid inlet of the right chamber 101. After entering the right chamber 101, the primary filtrate is first cooled by the oil cooler 3, and then passes through the oil-water separator 4 to remove oil. The primary filtrate, after being degreased by the oil-water separator 4, flows from the right chamber 101 into the left chamber 102 through a channel located between the outer wall 100 of the chip collection trough and the side wall of the water tank 10, for machine tool cooling and chip removal.

[0054] Using the machine tool cutting fluid treatment device of this embodiment, the machine tool cutting fluid can be finely filtered to produce a primary filtrate with a filtration accuracy of up to 150μm. The oil cooler 3 is used to cool the primary filtrate first, which increases the viscosity of the oil and the degree of oil-water separation, making it easier for subsequent oil removal. The oil-water separator 4 removes the oil from the primary filtrate, which can prevent the oil from fermenting and deteriorating in the water tank 10, thereby avoiding secondary pollution.

[0055] Example 2

[0056] This embodiment of the machine tool chip fluid treatment device has the same basic structure as Embodiment 1, but the differences and improvements are as follows: Figure 1 , 2 As shown in Figure 3, a cooling pump 6 and a chip flushing pump 7 for supplying water to the machine tool are installed on the left chamber 102. The inlets of the cooling pump 6 and the chip flushing pump 7 are both connected to the left chamber 102. The cooling pump 6 and the chip flushing pump 7 extract the primary filtrate from the left chamber 102 and deliver it to the cooling and chip flushing system of the machine tool for cooling and chip flushing of the machine tool's machining parts.

[0057] In this embodiment, a machine tool cutting fluid treatment device is provided. The cooling pump 6 and the chip flushing pump 7 are both installed on the left chamber 102, which can save installation space, improve the space utilization rate of the production workshop, and reduce production costs. In addition, the cooling pump 6 and the chip flushing pump 7 are connected to a circulation loop from primary filtrate → machine tool cooling, chip flushing → generation of cutting fluid → filtration to generate primary filtrate, realizing uninterrupted recycling of cutting fluid.

[0058] Example 3

[0059] This embodiment of a machine tool cutting fluid treatment device has the same basic structure as Embodiment 1 or 2, but the difference and improvement are as follows: Figure 1 , 2 As shown in Figure 3, a backwash pump 21 is also installed on the left chamber 102. The inlet of the backwash pump 21 is connected to the primary filtrate in the left chamber 102, and the outlet is connected to the drum chip conveyor 2. The backwash pump 21 extracts the primary filtrate in the left chamber 102 and transports it to the drum chip conveyor 2 to flush the filter screen on the surface of the backwash drum in the drum chip conveyor 2, so as to prevent the filter screen mesh from being blocked due to the accumulation of metal debris.

[0060] Example 4

[0061] This embodiment of a machine tool chip fluid treatment device has the same basic structure as Embodiments 1, 2, or 3, but the differences and improvements are as follows: Figure 1 , 2 As shown, an oxygen pump 5 is also installed on the right chamber 101. The exhaust port of the oxygen pump 5 is connected to the first-stage filtrate after oil removal in the right chamber 101, and the air inlet is connected to the outside. The oxygen pump 5 is used to input air into the first-stage filtrate to increase the dissolved oxygen content in the first-stage filtrate and prevent the first-stage filtrate from decomposing and smelling bad in an oxygen-free environment.

[0062] Example 5

[0063] The machine tool chip fluid treatment device of this embodiment has the same basic structure as that of Embodiment 3, but the difference and improvement are as follows: Figures 1 to 4 As shown, it also includes a vortex separator 8 and a secondary water tank 9. The vortex separator 8 is located at the upper port of the chip collection tank 1. The liquid inlet of the vortex separator 8 is connected to the water outlet of the backwash pump 21. The slag outlet is connected to the chip collection tank 1. The liquid outlet is connected to the secondary water tank 9. The secondary water tank 9 is located on one side of the water tank 10.

[0064] The backwash pump 21 has two outlets. One outlet supplies liquid to the drum chip conveyor 2 for backwashing and chip removal. The other outlet enters the vortex separator 8 through its inlet, where impurities are filtered out and secondary filtrate is produced. The filtration accuracy is 20μm. The impurities include metal shavings and other solid particles. The impurities are discharged into the chip collection tank 1 through the slag outlet of the vortex separator 8 and enter the drum chip conveyor 2 for filtration and chip removal along with the cutting liquid in the chip collection tank 1. The secondary filtrate is discharged into the secondary water tank 9 through the outlet of the vortex separator 8 and supplied to the machine tool spindle.

[0065] This embodiment of a machine tool cutting fluid treatment device, through the eddy current separator 8 and the secondary water tank 9, can perform secondary filtration of the cutting fluid, which can adapt to the different precision requirements of multiple parts of the machine tool, and realize the graded treatment and tiered zoned utilization of the machine tool cutting fluid.

[0066] Example 6

[0067] The machine tool chip fluid treatment device of this embodiment has the same basic structure as that of Embodiment 5, but the difference and improvement are as follows: Figures 1 to 5 As shown, a central water pump 92 is installed on the secondary water tank 9. The inlet of the central water pump 92 is connected to the secondary filtrate in the secondary water tank 9, and the outlet is connected to the machine tool spindle water supply pipeline. The central water pump 92 can continuously pump the secondary filtrate into the machine tool spindle water supply pipeline for use by the machine tool spindle. After the waste liquid flows out of the machine tool spindle, it mixes with the cutting fluid and is discharged from the machine tool chip outlet, thus connecting the circulation path of the machine tool spindle fluid and realizing the on-demand filtration of the machine tool spindle fluid.

[0068] Example 7

[0069] This embodiment of a machine tool chip fluid treatment device has the same basic structure as embodiments 5 or 6, but the differences and improvements are as follows: Figures 1 to 5 As shown, a low liquid level alarm 91 is also installed on the secondary water tank 9, which is used to alarm when the liquid level in the secondary water tank 9 is too low or too high, thereby improving the safety of the equipment.

[0070] Example 8

[0071] The machine tool chip fluid treatment device of this embodiment has the same basic structure as that of Embodiments 6 or 7, but the difference and improvement are as follows: Figure 5 As shown, the secondary water tank 9 is equipped with a filter element 95, which is located at the inlet of the central water pump 92 and is submerged in the secondary filtrate. When the central water pump 92 draws the secondary filtrate, the secondary filtrate is first filtered by the filter element 95 and then supplied to the machine tool spindle by the central water pump 92. This is to prevent the primary filtrate from directly entering the machine tool spindle due to damage or failure of the preceding filter, thereby avoiding damage to the machine tool spindle.

[0072] Example 9

[0073] This embodiment of a machine tool cutting fluid treatment device has the same basic structure as embodiments 6, 7, or 8, but the differences and improvements are as follows: Figure 3 , 5 As shown, the secondary water tank 9 is located on one side of the left chamber 102. A partition 94 is provided between the secondary water tank 9 and the left chamber 102, separating the secondary water tank 9 and the left chamber 102. An overflow port 93 is provided above the partition 94, and the secondary water tank 9 and the left chamber 102 are connected through the overflow port 93. After the secondary water tank 9 is full of secondary filtrate, the excess secondary filtrate overflows from the overflow port 93 into the left chamber 102 and mixes with the primary filtrate, protecting the secondary water tank 9 and its upstream equipment and improving the safety of the equipment.

[0074] The method for treating the cutting fluid in the machine tool cutting fluid treatment device of this embodiment includes the following steps:

[0075] Step 1: The cutting fluid is discharged from the chip outlet of the machine tool into the chip collection tank 1, and then introduced into the drum chip conveyor 2 for filtration and chip removal to produce primary filtrate.

[0076] Step 2: The primary filtrate flows into the right chamber 101 of the water tank 10 through the outlet of the drum chip conveyor 2 for secondary treatment.

[0077] A. The primary filtrate first flows through oil cooler 3 to cool down;

[0078] B. After cooling, use oil-water separator 4 to separate and discharge the oil from the primary filtrate;

[0079] C. Use oxygen pump 5 to introduce air into the primary filtrate;

[0080] Step 3: The primary filtrate after secondary treatment is introduced into the left chamber 102 of the water tank 10 through the channel between the outer wall 100 of the chip collection tank and the side wall of the water tank 10.

[0081] Step 4: Use cooling pump 6 and chip flushing pump 7 to extract the primary filtrate from the left chamber 102 and supply it to the machine tool for chip flushing and cooling. After use, the generated cutting fluid is discharged from the machine tool chip outlet into the chip receiving tank 1.

[0082] Step 5: Use backwash pump 21 to extract the primary filtrate from the left chamber 102. Backwash pump 21 has two outlets: one supplying the roller chip conveyor 2 to backwash and remove chips, preventing the filter screen from clogging due to metal debris accumulation; the other supplying the eddy current separator 8.

[0083] Step 6: The primary filtrate is filtered by vortex separator 8 to separate impurities and produce secondary filtrate;

[0084] Step 7: The secondary filtrate flows into the secondary water tank 9 through the pipeline, while impurities enter the chip collection tank 1 and enter the drum chip conveyor 2 for filtration and chip removal along with the cutting liquid in the chip collection tank 1.

[0085] Step 8: The secondary filtrate is filtered again by filter element 95 and then pumped out by the central water pump 92 to supply the machine tool spindle.

[0086] This embodiment of a machine tool cutting fluid treatment method can centrally classify and process the cutting fluid output by the machine tool, recycle it, has good filtration effect, and is widely applicable; and can meet the fluid supply requirements of different precision in multiple parts of the machine tool.

[0087] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A method for treating machine tool cutting fluid, characterized in that, Processed by machine tool cutting fluid treatment device; The machine tool cutting fluid treatment device includes a water tank (10), in which a chip receiving groove (1) and a roller chip conveyor (2) are connected in the middle. The chip receiving groove (1) and the roller chip conveyor (2) divide the water tank (10) into a right chamber (101) and a left chamber (102). The right chamber (101) and the left chamber (102) are connected by a channel between the outer wall (100) of the chip receiving groove and the side wall of the water tank (10). The outlet of the roller chip conveyor (2) is connected to the right chamber (101). An oil cooler (3) and an oil-water separator (4) are installed in the right chamber (101). A cooling pump (6) for supplying water to the machine tool and a flushing pump are installed on the left chamber (102). The inlets of the chip pump (7), the cooling pump (6), and the chip flushing pump (7) are all connected to the left chamber (102); the left chamber (102) is also equipped with a backwash pump (21), the inlet of the backwash pump (21) is connected to the left chamber (102), and the outlet is connected to the drum chip conveyor (2); it also includes a vortex separator (8) and a secondary water tank (9), the vortex separator (8) is located at the upper port of the chip receiving groove (1), the liquid inlet of the vortex separator (8) is connected to the outlet of the backwash pump (21), the slag outlet is connected to the chip receiving groove (1), and the liquid outlet is connected to the secondary water tank (9), the secondary water tank (9) is located on one side of the water tank (10); The machine tool cutting fluid treatment device performs secondary treatment on the machine tool cutting fluid between the two-stage filtration stages. Then, the central water pump (92) continuously pumps the secondary filtrate into the machine tool spindle water supply pipeline for use by the machine tool spindle. The waste liquid flows out of the machine tool spindle, mixes with the cutting fluid, and is discharged from the machine tool, connecting the circulation path of the machine tool spindle fluid. The machine tool spindle fluid is filtered and used immediately. The specific steps are as follows: The cutting fluid is introduced into the drum chip conveyor (2) for filtration and chip removal, producing primary filtrate; The primary filtrate flows into the right chamber (101) of the water tank (10) via the roller chip conveyor (2) for secondary treatment; The primary filtrate after secondary treatment is introduced into the left chamber (102) of the water tank (10). The primary filtrate in the left chamber (102) is supplied to the machine tool for chip flushing and cooling using a cooling pump (6) and a chip flushing pump (7); The backwash pump (21) has two outlets. The backwash pump (21) supplies the primary filtrate in the left chamber (102) to the roller chip conveyor (2) for backwashing and chip removal, and supplies the other outlet to the eddy current separator (8). The primary filtrate is filtered by the vortex separator (8) to separate impurities and produce a secondary filtrate; The secondary filtrate flows into the secondary water tank (9) through the pipeline, while impurities enter the chip collection tank (1); The secondary filtrate is then filtered by filter element (95) and pumped out by central water pump (92) to supply the machine tool spindle; The secondary processing includes the following steps: A. The primary filtrate first flows through an oil cooler (3) to cool down; B. After cooling, use an oil-water separator (4) to separate and discharge the oil from the primary filtrate; C. Use the oxygenation pump (5) to introduce air into the primary filtrate.

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