A lathe cutting fluid filtering device

Abstract

The present application relates to a lathe cutting fluid filtering device, including a mounting frame, a filter tube, a magnetic suction mechanism, a flipping mechanism, a cleaning mechanism and a flow detection mechanism. The filter tube is rotatably mounted on the mounting frame. The magnetic suction mechanism is arranged on the filter tube to adsorb the magnetic waste contained in the cutting fluid flowing through the filter tube to the inner wall of the filter tube. The flipping mechanism is used to control the filter tube to rotate around the axis. The cleaning mechanism is used to clean the magnetic waste on the inner wall of the filter tube flipped above the liquid surface of the cutting fluid in the filter tube. The flow detection mechanism is used to detect the flow of the cutting fluid flowing through the filter tube, and the flipping mechanism and the cleaning mechanism are sequentially started when the predetermined flow rate is reached. The cleaned cutting fluid is then filtered through the filter membrane, which reduces the burden of the filter membrane during filtration, increases the service life of the filter membrane and extends the cleaning cycle of the filter membrane.

Description

Technical Field

[0001] The present application relates to the field of machine tools, and in particular to a lathe cutting fluid filtering device. Background Art

[0002] When using a lathe to process taps or dies, since the taps and dies are made of high-speed steel, a large amount of heat is generated during processing, and a large amount of cutting fluid is required to cool and lubricate the processed parts.

[0003] Since the cost of cutting fluid is high, directly discarding it after one use will lead to a sharp increase in production costs. Therefore, the used cutting fluid is usually recycled.

[0004] On the workbench and bed of the lathe, a reflux trough is usually designed to guide the cutting fluid back to the cutting fluid barrel for recovery. A wire screen is installed in the reflux trough to filter strip-shaped and large-particle powdered magnetic waste chips. The cutting fluid recovered in the cutting fluid barrel will be pumped back to the workbench of the machine tool by a water pump for recycling.

[0005] However, since the cutting fluid in the cutting fluid barrel still contains a certain amount of powdered small particles of powdered magnetic waste, direct recycling will not only damage the surface of the parts being processed on the workbench, but also reduce the cooling and lubricating effect of the cutting fluid, and also cause wear on the cutting fluid circulation system inside the machine tool. Therefore, the recovered cutting fluid needs to be further filtered.

[0006] A common filtration method is usually to use a filter membrane, which can effectively remove powdered magnetic waste and grease in the cutting fluid, and can significantly extend the service life of the cutting fluid.

[0007] However, when the cutting fluid is filtered directly through the filter membrane, the iron powder and grease in the cutting fluid are removed by the filter membrane, which causes great loss to the filter membrane. The cost of cleaning or replacing the filter membrane is high, which increases the overall production and processing cost. Summary of the Invention

[0008] In order to solve the problem that filtering the recovered cutting fluid directly through a filter membrane will lead to increased production costs, the present application provides a lathe cutting fluid filtering device.

[0009] The present application provides a lathe cutting fluid filtering device that adopts the following technical solution:

[0010] A lathe cutting fluid filtering device includes a mounting frame, a filter tube, a magnetic attraction mechanism, a flipping mechanism, a cleaning mechanism and a flow detection mechanism. The filter tube is rotatably mounted on the mounting frame. The magnetic attraction mechanism is provided on the filter tube to adsorb magnetic waste chips contained in the cutting fluid flowing through the filter tube onto the inner wall of the filter tube. The flipping mechanism is used to control the rotation of the filter tube around the axis. The cleaning mechanism is used to clean the magnetic waste chips on the inner wall of the filter tube that are flipped over to above the liquid level of the cutting fluid in the filter tube. The flow detection mechanism is used to detect the flow rate of the cutting fluid flowing through the filter tube, and to start the flipping mechanism and the cleaning mechanism in sequence when a predetermined flow rate is reached.

[0011] Through the above technical solution, the powdered magnetic waste in the cutting fluid flowing through the filter tube is adsorbed onto the inner wall of the filter tube by the magnetic attraction mechanism, thereby realizing the separation and removal of the powdered magnetic waste. At the same time, the flow of the cutting fluid flowing through the filter tube is detected by the flow detection mechanism. When it is detected that the flow meets the standard, the flipping mechanism is started to drive the filter tube to rotate, and the inner wall of the filter tube whose adsorption amount has reached the predetermined amount is rotated to the upper side of the cutting fluid in the filter tube. Then, the cleaning mechanism is started to clean the powdered magnetic waste on the inner wall of the filter tube, which can effectively prevent the excessive accumulation of powdered magnetic waste in the filter tube and affect the cleaning ability of the magnetic attraction mechanism. Finally, the cleaned cutting fluid is filtered through the filter membrane again, which reduces the burden on the filter membrane during filtration, improves the service life of the filter membrane and extends the cleaning cycle of the filter membrane.

[0012] Optionally, the flow detection mechanism includes a detection wheel rotatably mounted on the mounting frame via a mounting shaft, a plurality of baffles are circumferentially spaced apart on the side wall of the detection wheel, a detection groove is provided on the baffle, and the detection groove is used to receive the cutting fluid flowing out of the filter tube, a detection gear is rotatably mounted on the mounting frame, the detection gear is connected to the mounting shaft via a reduction assembly, a starting rod is provided on the detection gear, and a proximity sensor is provided on the mounting frame, the starting rod can be rotated until one end thereof is close to the proximity sensor, and the proximity sensor is used to start the flipping mechanism and the cleaning mechanism in sequence.

[0013] Through the above technical solution, since the cross-sectional area of ​​the cutting fluid passing through the filter tube cannot be determined, the flow rate of the cutting fluid cannot be measured by measuring the flow velocity. Instead, a rough detection of the flow rate of the cutting fluid passing through the filter tube is performed through the detection slot in the baffle, which can meet the flow monitoring needs of the cleaning mechanism.

[0014] Optionally, the magnetic suction mechanism includes permanent magnetic suction cups provided on opposite side walls of the filter tube, and the cleaning mechanism includes a first slide rail provided on the mounting frame, the first slide rail passes through the filter tube, a slider is slidably installed on the first slide rail, a collecting bucket is provided on the slider for collecting powdered magnetic waste falling from the filter tube after the permanent magnetic suction cup is closed, a driving assembly is provided on the mounting frame for driving the slider to slide, and a pushing assembly is provided on the mounting frame for moving the lever of the permanent magnetic suction cup.

[0015] Optionally, the flipping mechanism includes a driving gear coaxially arranged on the filter tube, a driving rack slidably mounted on the mounting frame, and a driving cylinder arranged on the mounting frame, the driving cylinder is activated by the proximity sensor, the driving cylinder is used to push the driving rack to slide, the driving assembly includes a first conveyor belt rotatably mounted on the mounting frame, the first conveyor belt slides through the first slide rail, and the first conveyor belt is connected to the slider.

[0016] Optionally, the pushing assembly includes a mounting block slidably mounted on the mounting frame, a pushing rack provided on the mounting block, and a second conveyor belt rotatably mounted on the mounting frame, the second conveyor belt rotates synchronously with the first conveyor belt, a pushing gear engaged with the pushing rack is coaxially provided on the lever shaft of the permanent magnetic suction cup, the second conveyor belt is connected to the mounting block, and the mounting block is used to drive the pushing rack to slide to engage with the pushing gear, thereby pushing the pushing gear to rotate.

[0017] Optionally, the lower end of the first slide rail is bent downward, and a waste bucket is provided on the mounting frame below the first slide rail for holding powdered magnetic waste falling from the collecting hopper.

[0018] Optionally, a sliding groove for slidingly installing the slider is opened on the first slide rail, the slider is cylindrical, and a stabilizing wheel is rotatably installed on the collecting bucket, and the stabilizing wheel rolls against the top wall of the first slide rail.

[0019] Optionally, the stabilizing wheel is mounted on the collecting bucket via a support rod, the support rod and the collecting bucket are slidingly connected, a support spring is provided between the support rod and the collecting bucket, and the support spring is used to support the stabilizing wheel against the first slide rail.

[0020] Optionally, a plurality of mounting wheels are coaxially provided on the outer wall of the filter tube, an arcuate groove is provided on the mounting frame, the mounting wheels are rotatably installed in the arcuate groove, a second slide rail is provided between the mounting wheels, and the second slide rail is used for slidingly installing the push rack.

[0021] Optionally, the filter tube is in the shape of a square tube.

[0022] To sum up, the present application pre-treats the lathe cutting fluid through a permanent magnetic suction cup and a filter tube, separates and removes most of the powdered magnetic waste chips in the lathe cutting fluid, reduces the workload of the filter membrane when it is working, and at the same time detects the flow through the filter tube through the detection wheel and the baffle. When the flow meets the standard, the drive cylinder is started to push the filter tube to rotate and turn over, and then the first conveyor belt and the second conveyor belt are started. After the collecting bucket reaches the position, the permanent magnetic suction cup is closed, so that the iron powder falls into the collecting bucket under the action of gravity and is collected. The cleaning of the iron powder is relatively convenient, and by bending the lower end of the first slide rail downward, the collecting bucket slides to the lower end of the first slide rail and flips downward to pour the iron powder into the waste bucket, so that the powdered magnetic waste chips in the collecting bucket will not accumulate excessively and fall back into the cutting fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of this application.

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present application, in which part of the mounting frame is removed.

[0025] Figure 3 This application is relative Figure 2 Schematic diagram of the three-dimensional structure from another angle.

[0026] Figure 4 It is a cross-sectional view of this application.

[0027] Figure 5 yes Figure 4 Enlarged schematic diagram of part A in the middle.

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the present application after removing the mounting frame, the first conveyor belt and the second conveyor belt.

[0029] Figure 7 It is a three-dimensional structural diagram of the filter tube and its upper mechanism and part of the mounting frame of the present application.

[0030] Figure 8 It is a schematic diagram of the three-dimensional structure of the first slide rail and the collecting bucket of the present application.

[0031] Figure 9 It is a cross-sectional view of the damping gear of the present application.

[0032] Figure 10 It is a cross-sectional view of the detection gear of the present application.

[0033] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0034] Reference numerals: 1, mounting frame; 11, recycling bin; 12, waste bin; 13, arc groove; 14, second slide rail; 141, dovetail groove; 2, filter tube; 21, mounting wheel; 211, notch; 3, magnetic attraction mechanism; 31, permanent magnetic chuck; 4, cleaning mechanism; 41, first slide rail; 411, slide groove; 42, slider; 43, collection bucket; 44, stabilizing wheel; 45, support rod; 46, cleaning brush; 5, flow detection mechanism; 51, installation Shaft; 52, detection wheel; 53, baffle; 531, detection slot; 54, detection gear; 55, starting rod; 56, proximity sensor; 57, damping gear; 58, rubber plate; 6, flip mechanism; 61, driving gear; 62, driving rack; 63, driving cylinder; 7, driving assembly; 71, first conveyor belt; 8, pushing assembly; 81, mounting block; 82, connecting rod; 83, pushing rack; 84, second conveyor belt; 85, pushing gear. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1 —10 provides further details of this application.

[0036] The present application discloses a lathe cutting fluid filtering device, referring to Figure 1 and Figure 2 It includes a mounting frame 1, a filter tube 2 rotatably mounted on the mounting frame 1, a magnetic attraction mechanism 3 provided on the filter tube 2, a flipping mechanism 6 provided on the mounting frame 1, a cleaning mechanism 4 provided on the mounting frame 1 and a flow detection mechanism 5.

[0037] Reference Figure 2 and Figure 7 The filter tube 2 is in the shape of a square tube, and the magnetic attraction mechanism 3 includes a number of permanent magnetic suction cups 31 evenly fixedly installed on the opposite side walls of the filter tube 2. The levers of the permanent magnetic suction cups 31 on the same surface are located on the same side, and the levers of the permanent magnetic suction cups 31 on the opposite side walls are in opposite directions.

[0038] Reference Figure 3 and Figure 4 The filter tube 2 is inclined, and the discharge end of the lathe cutting fluid recovery pump transports the used cutting fluid to the upper end of the filter tube 2 through a pipeline. A recovery bucket 11 is fixedly installed on the mounting frame 1 at the lower end of the filter tube 2 to recover the cutting fluid flowing out from the lower end of the filter tube 2. After the cutting fluid flows through the filter tube 2, most of the powdered magnetic waste chips in the cutting fluid will be sucked out by the permanent magnetic suction cup 31 and attached to the inner wall of the filter tube 2, thereby cleaning the powdered magnetic waste chips in the cutting fluid.

[0039] Typically, one side wall of the filter tube 2 is equipped with a permanent magnetic suction cup 31 at the bottom to absorb powdered magnetic waste in the cutting fluid. Multiple mounting wheels 21 are coaxially fixedly mounted on the outer wall of the filter tube 2. Arc-shaped grooves 13 are provided on the mounting frame 1 above and below the mounting wheels 21. The mounting wheels 21 are rotatably mounted in the arc-shaped grooves 13, and the filter tube 2 is rotatably mounted on the mounting frame 1 via the mounting wheels 21. While the installation of the filter tube 2 is stable, the mounting wheels 21 minimally interfere with the mechanisms on the mounting frame 1 and within the filter tube 2, making it easy to avoid interference.

[0040] Reference Figure 3 and Figure 6 The flipping mechanism 6 is used to drive the filter tube 2 to rotate. The flipping mechanism 6 includes a driving gear 61 coaxially fixedly installed at the lower end of the filter tube 2, a driving rack 62 horizontally slidably installed on the mounting frame 1, and a driving cylinder 63 fixedly installed on the mounting frame 1. The piston rod of the driving cylinder 63 is connected to the driving rack 62 to push the driving rack 62 to slide, and the driving rack 62 is engaged with the driving gear 61.

[0041] Reference Figure 4 The flow detection mechanism 5 includes a detection wheel 52 rotatably mounted on the recovery barrel 11 through an installation shaft 51. A plurality of baffles 53 are fixedly mounted on the side wall of the detection wheel 52 at intervals in the circumferential direction. The axis of the detection wheel 52 is horizontal. A detection groove 531 is provided on the baffle 53. When the cutting fluid flows out of the filter tube 2, it falls into the detection groove 531.

[0042] Reference Figure 4 and Figure 9 A damping gear 57 is fixedly mounted on the mounting frame 1 and coaxially connected to the mounting shaft 51. A rubber plate 58 is fixedly mounted on the mounting frame 1 below the damping gear 57, pressing against the teeth of the damping gear 57. When the weight of the cutting fluid in the detection tank 531 reaches a specified value, the baffle 53 pushes the detection wheel 52 and the damping gear 57 to rotate until the cutting fluid in the detection tank 531 is poured into the recovery barrel 11, at which point the rubber plate 58 again blocks the damping gear 57 and the detection wheel 52.

[0043] Reference Figure 3 At the same time, a circulation pump is fixedly installed in the recovery barrel 11. The circulation pump transports the cutting fluid after preliminary filtration to the next cleaning mechanism 4 to filter the grease and remaining powdered magnetic waste chips in the cutting fluid through the filter membrane.

[0044] Through the above method, the amount of cutting fluid passing through the filter tube 2 can be obtained by calculating the volume of the detection tank 531 and the number of rotations. Compared with direct detection through a flow meter, the cross-sectional area of ​​the cutting fluid passing through the filter tube 2 is more difficult to calculate. Therefore, the above measurement method of the present application is more accurate.

[0045] Reference Figure 10 The flow detection mechanism 5 also includes a detection gear 54 rotatably mounted on the mounting frame 1. The detection gear 54 is transmission-connected to the mounting shaft 51 through a reduction mechanism. A starting rod 55 is fixedly mounted on the end face of the detection gear 54. A proximity sensor 56 is fixedly mounted on the mounting frame 1. The proximity sensor 56 is used to start the driving cylinder 63.

[0046] When the detection gear 54 rotates until the start lever 55 approaches the proximity sensor 56 and triggers the proximity sensor 56, it indicates that the amount of cutting fluid flowing through the filter tank has reached the specified value. At this time, the amount of powdered magnetic waste adsorbed on the inner wall of the filter tube 2 has reached the specified value and needs to be cleaned. At this time, the proximity sensor 56 activates the drive cylinder 63, which drives the drive gear 61 and the filter tube 2 to rotate through the drive rack 62, causing the filter tube 2 to turn over. The permanent magnetic suction cup 31 on the upper side rotates to the lower side to continue to adsorb and remove the powdered magnetic waste in the cutting fluid, and the cleaning mechanism 4 is activated at the same time.

[0047] Reference Figure 7 and Figure 8 The cleaning mechanism 4 includes a first slide rail 41 fixedly mounted on the mounting frame 1, a slider 42 slidably mounted on the first slide rail 41, a collecting bucket 43 fixedly mounted on the slider 42, and a pushing component 8 for pushing the rotating shaft of the permanent magnetic suction cup 31 lever.

[0048] The first slide rail 41 passes through the filter tube 2 and is parallel to the filter tube 2 .

[0049] Reference Figure 2 、 Figure 7 and Figure 8 A driving assembly 7 is provided on the mounting frame 1 for driving the slider 42 to slide. The driving assembly 7 includes a first conveyor belt 71 rotatably mounted on the mounting frame 1. The first conveyor belt 71 slides through the first slide rail 41. The slider 42 is fixedly connected to the first conveyor belt 71, and the slider 42 is driven to slide by the first conveyor belt 71.

[0050] Reference Figure 2 、 Figure 3 and Figure 6The pushing assembly 8 includes a mounting block 81 slidably mounted on the mounting frame 1 and a pushing rack 83 fixedly mounted on the mounting block 81 through a connecting rod 82. The lever of the permanent magnetic suction cup 31 is removed, and a pushing gear 85 is coaxially fixedly mounted on the rotating shaft of the lever of the permanent magnetic suction cup 31. The pushing gear 85 and the pushing rack 83 are engaged with each other.

[0051] Reference Figure 2 、 Figure 3 and Figure 6 A second conveyor belt 84 is rotatably mounted on the mounting frame 1 . The second conveyor belt 84 and the first conveyor belt 71 are driven by the same main shaft, and the mounting block 81 is fixedly connected to the second conveyor belt 84 .

[0052] When the first conveyor belt 71 is started, the second conveyor belt 84 is also started synchronously. When the collecting bucket 43 moves to a position where it can receive the powdered magnetic waste within the adsorption range of the first permanent magnetic suction cup 31, the pushing rack 83 is engaged with the pushing gear 85 on the permanent magnetic suction cup 31 and just pushes the lever shaft of the permanent magnetic suction cup 31 to rotate to the magnetic closing position of the permanent magnetic suction cup 31. The magnetic force of the permanent magnetic suction cup 31 disappears, and the powdered magnetic waste adsorbed on the side wall of the filter tube 2 falls into the collecting bucket 43.

[0053] Reference Figure 2 、 Figure 3 and Figure 6 Notches 211 are provided on both sides of the mounting wheel 21. A second slide rail 14 is provided on both sides of the mounting wheel 21. The second slide rail 14 passes through the notches 211 and is fixedly connected to the mounting wheel 21. Two notches are also provided on the driving gear 61 to allow for the second slide rail 14 to pass through. A dovetail groove 141 is provided on the second slide rail 14. The push rack 83 slides and engages with the dovetail groove 141. When the push rack 83 drives the push gear 85 to rotate, the push rack 83 slides and is installed in the dovetail groove 141. The second slide rail 14 limits the movement of the push rack 83, making it less likely for the push rack 83 to shake and slip when driving the push gear 85 to rotate. The second slide rail 14 connects the multiple mounting wheels 21, forming a whole, further enhancing the rotational stability of the filter tube 2.

[0054] Reference Figure 8 When the collecting bucket 43 enters the filter tube 2, the port of the collecting bucket 43 fits against the inner wall of the filter tube 2, making it difficult for the powdered magnetic waste to leak back into the cutting fluid. The moving direction of the collecting bucket 43 when collecting the powdered magnetic waste is taken as the positive direction. A cleaning brush 46 is fixedly installed on the reverse end of the collecting bucket 43. When the collecting bucket 43 is located in the filter tube 2, the bristles of the cleaning brush 46 press against the top wall of the filter tube 2 to further clean the top wall of the filter tube 2.

[0055] Reference Figure 2 、 Figure 3 and Figure 6 A waste scrap bucket 12 is also fixedly mounted on the mounting frame 1 at the lower end of the filter tube 2. The lower end of the first slide rail 41 is bent downward and positioned within the opening of the waste scrap bucket 12. A slide groove 411 is defined on the top wall of the first slide rail 41. A cylindrical slider 42 is slidably mounted within the slide groove 411. When the slider 42 slides to the lower end of the first slide rail 41, the collection hopper 43, guided by the bent portion of the lower end of the first slide rail 41, flips and pours the powdered magnetic scraps into the waste scrap bucket 12.

[0056] Reference Figure 5 and Figure 8 Four support rods 45 are slidably installed at the bottom of the collecting bucket 43, and a stabilizing wheel 44 is rotatably installed on the support rods 45. A supporting spring is provided between the support rods 45 and the collecting bucket 43. Under the action of the supporting spring, the stabilizing wheel 44 rolls tightly on the top wall of the first slide rail 41, so that the collecting bucket 43 is not easy to overturn and shake when sliding, and the powdered magnetic waste chips in the collecting bucket 43 are less likely to fall into the cutting fluid again.

[0057] The working principle of the lathe cutting fluid filtering device of the embodiment of the present application is as follows: the cutting fluid passes through the filter tube 2, and the powdered magnetic waste in the cutting fluid is sucked out by the permanent magnetic suction cup 31 and attached to the bottom wall of the filter tube 2. Then the cutting fluid flows out of the filter tube 2 and falls onto the baffle 53 in the recovery barrel 11.

[0058] When the detection groove 531 of the baffle 53 is full, it overcomes the resistance of the rubber plate 58 and drives the detection wheel 52 to rotate. After rotating for a fixed number of times, the detection gear 54 rotates until the starting rod 55 approaches the proximity sensor 56. The proximity sensor 56 activates the driving cylinder 63. The driving cylinder 63 starts and drives the driving rack 62 to slide. The sliding of the driving rack 62 drives the driving gear 61 to rotate, which drives the filter tube 2 to rotate.

[0059] After the driving cylinder 63 is fully extended, the filter tube 2 rotates to turn over, and the original top wall serves as the bottom wall to continue to adsorb and remove the powdered magnetic waste in the cutting fluid. At the same time, the first conveyor belt 71 and the second conveyor belt 84 are started, and the first conveyor belt 71 drives the collection bucket 43 to enter the filter tube 2. When the collection bucket 43 slides to a point where it can receive the powdered magnetic waste that falls after the first permanent magnetic suction cup 31 is closed, the rack 83 is pushed to drive the gear 85 to rotate until the lever shaft of the permanent magnetic suction cup 31 rotates to the other side. The first permanent magnetic suction cup 31 is closed, and the powdered magnetic waste falls into the collection bucket 43. Then the collection bucket 43 continues to slide down, and the permanent magnetic suction cup 31 is closed in turn. The powdered magnetic waste on the top wall of the filter tube 2 falls into the collection bucket 43 and is collected. When the collection bucket 43 slides to the lower end of the first slide rail 41, the collection bucket 43 pours the powdered magnetic waste into the waste bucket 12 under the guidance of the first slide rail 41.

[0060] Then the first conveyor belt 71 and the second conveyor belt 84 are reversed and reset, and at the same time, the permanent magnetic chucks 31 located on the top wall of the filter tube 2 are reopened in sequence so as to be used when the filter tube 2 is turned over in the next round.

[0061] During the next turning round, the driving cylinder 63 is completely retracted and the filter tube 2 is reversed.

[0062] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lathe cutting fluid filtering device, characterized in that: The invention comprises a mounting frame (1), a filter tube (2), a magnetic attraction mechanism (3), a flipping mechanism (6), a cleaning mechanism (4) and a flow detection mechanism (5), wherein the filter tube (2) is rotatably mounted on the mounting frame (1), the magnetic attraction mechanism (3) is arranged on the filter tube (2) and is used to adsorb magnetic waste chips contained in the cutting fluid flowing through the filter tube (2) onto the inner wall of the filter tube (2), the flipping mechanism (6) is used to control the filter tube (2) to rotate around the axis, and the cleaning mechanism (4) is used to clean the filter tube (2) flipped over to a position above the liquid surface of the cutting fluid in the filter tube (2). The flow detection mechanism (5) is used to detect the flow of cutting fluid flowing through the filter tube (2), and to sequentially activate the turning mechanism (6) and the cleaning mechanism (4) when a predetermined flow rate is reached; the flow detection mechanism (5) comprises a detection wheel (52) rotatably mounted on the mounting frame (1) via a mounting shaft (51); a plurality of baffles (53) are circumferentially arranged on the side wall of the detection wheel (52); the baffles (53) are provided with detection grooves (531); the detection grooves (531) are used to receive the cutting fluid flowing out of the filter tube (2); A detection gear (54) is rotatably mounted on the mounting frame (1); the detection gear (54) is transmission-connected to the mounting shaft (51) via a reduction assembly; a starter rod (55) is provided on the detection gear (54); a proximity sensor (56) is provided on the mounting frame (1); the starter rod (55) can be rotated until one end thereof is close to the proximity sensor (56); the proximity sensor (56) is used to sequentially start the turning mechanism (6) and the cleaning mechanism (4); the magnetic suction mechanism (3) comprises permanent magnetic suction cups (31) provided on opposite side walls of the filter tube (2); The cleaning mechanism (4) comprises a first slide rail (41) arranged on the mounting frame (1), the first slide rail (41) passing through the filter tube (2), a slider (42) being slidably mounted on the first slide rail (41), the slider (42) being provided with a collecting bucket (43) for collecting powdered magnetic waste falling from the filter tube (2) after the permanent magnetic suction cup (31) is closed, a driving assembly (7) being provided on the mounting frame (1) for driving the slider (42) to slide, and a pushing assembly (8) being provided on the mounting frame (1) for moving the lever of the permanent magnetic suction cup (31);The turning mechanism (6) comprises a driving gear (61) coaxially mounted on the filter tube (2), a driving rack (62) slidably mounted on the mounting frame (1), and a driving cylinder (63) mounted on the mounting frame (1), wherein the driving cylinder (63) is activated by the proximity sensor (56), and the driving cylinder (63) is used to push the driving rack (62) to slide, and the driving assembly (7) comprises a first conveyor belt (71) rotatably mounted on the mounting frame (1), wherein the first conveyor belt (71) slides through the first slide rail (41), and the first conveyor belt (71) is connected to the slider (42). ; 2. A lathe cutting fluid filtering device according to claim 1, characterized in that: The pushing assembly (8) comprises a mounting block (81) slidably mounted on the mounting frame (1), a pushing rack (83) arranged on the mounting block (81), and a second conveyor belt (84) rotatably mounted on the mounting frame (1); the second conveyor belt (84) rotates synchronously with the first conveyor belt (71); a pushing gear (85) meshing with the pushing rack (83) is coaxially arranged on the lever shaft of the permanent magnetic suction cup (31); the second conveyor belt (84) is connected to the mounting block (81); and the mounting block (81) is used to drive the pushing rack (83) to slide to mesh with the pushing gear (85), thereby driving the pushing gear (85) to rotate.

3. A lathe cutting fluid filtering device according to claim 1, characterized in that: The lower end of the first slide rail (41) is bent downward, and a waste scrap bucket (12) is provided on the mounting frame (1) below the first slide rail (41) for containing powdered magnetic waste scraps dropped from the collecting bucket (43).

4. A lathe cutting fluid filtering device according to claim 3, characterized in that: The first slide rail (41) is provided with a slide groove (411) for slidingly mounting the slide block (42); the slide block (42) is cylindrical; a stabilizing wheel (44) is rotatably mounted on the collection bucket (43); the stabilizing wheel (44) rolls against the top wall of the first slide rail (41).

5. A lathe cutting fluid filtering device according to claim 4, characterized in that: The stabilizing wheel (44) is mounted on the collecting bucket (43) via a support rod (45); the support rod (45) and the collecting bucket (43) are slidably connected; a support spring is provided between the support rod (45) and the collecting bucket (43); the support spring is used to support the stabilizing wheel (44) against the first slide rail (41).

6. A lathe cutting fluid filtering device according to claim 2, characterized in that: A plurality of mounting wheels (21) are coaxially arranged on the outer wall of the filter tube (2), an arc-shaped groove (13) is arranged on the mounting frame (1), the mounting wheels (21) are rotatably mounted in the arc-shaped groove (13), a second slide rail (14) is arranged between the mounting wheels (21), and the second slide rail (14) is used for slidably mounting the push rack (83).

7. A lathe cutting fluid filtering device according to claim 1, characterized in that: The filter tube (2) is in the shape of a square tube.

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