A cooling oil filtration device for an EDM machine

Abstract

This invention relates to the field of cooling oil filtration, specifically disclosing a cooling oil filtration device for an EDM machine. It solves the problems of existing EDM cooling oil filtration devices being inconvenient to clean, having limited functionality, and high operating costs. The proposed solution includes an upper cylinder, a lower cylinder, a motor compartment, a chuck, a filter element, a telescopic component, a circular disc, a first circular ring, a guide plate, a scraper, and a cleaning brush. A pulling assembly is provided on the circular disc, and an unfolding assembly is provided between the vertical plate and the guide plate. A driving assembly is also provided inside the upper cylinder to drive the first circular ring to rotate, thereby causing the scraper to clean the inner wall of the upper cylinder and the cleaning brush to clean the outer surface of the filter element. This device can be used independently or in combination with an EDM machine, increasing functionality. It allows for multiple oil inlets, greatly improving the efficiency of cooling oil filtration. It is self-cleaning, has good cleaning effect, and low operating costs.

Description

Technical Field

[0001] This invention relates to the field of cooling oil filtration, and more particularly to a cooling oil filtration device for an EDM machine. Background Technology

[0002] The cooling oil for EDM machines is specifically designed for EDM. It possesses excellent insulation properties, ensuring that the discharge process occurs only between the electrodes and the workpiece, preventing short circuits and other abnormalities. Furthermore, EDM oil has a high flash point, good safety, and strong chemical stability, making it resistant to decomposition and deterioration, resulting in a relatively long service life. During use, the cooling oil may become contaminated with electrolytic debris and other impurities, requiring periodic filtration. Specialized filtration equipment can be used to remove solid impurities, maintaining the cooling oil's optimal performance.

[0003] Currently, the filtration of cooling oil for EDM machines can be achieved either by directly installing a circulating filter on the EDM machine or by using an external device to collect the cooling oil before filtration. However, regardless of the filtration method, the filter device can only be used individually and cannot be flexibly combined with external devices or installed on the EDM machine. Furthermore, existing filter devices require regular cleaning of the inner walls and replacement of the filter element after prolonged use. This is because existing centrifugal cooling oil filters centrifuge and throw larger debris onto the inner wall of the filter device, while the surface of the central filter element also accumulates a large amount of smaller debris. Over time, this reduces the effectiveness and efficiency of centrifugal filtration. Current cleaning and replacement methods typically involve disassembly, which is cumbersome, and frequent filter element replacements increase costs.

[0004] Chinese patent application number CN201921787637.4 discloses "a multi-layer cooling and filtering device for oil in an EDM machine tool. Through an operating rack, a disc, and a limiting shaft, when installing or removing the filter plate, the user moves the operating rack up or down, which drives the gear to rotate. Because the gear and the disc are coaxially arranged, the disc and the gear rotate synchronously, causing the limiting shaft to move outward or inward to engage the transverse locking shaft, thus achieving the purpose of installing or removing the filter plate. This overcomes the shortcomings of springs, which are prone to fatigue during long-term use, weakening their elasticity and increasing equipment maintenance costs. It is beneficial for long-term use, and the overall structure is simple and easy to operate. The filter plate can be quickly and easily removed from the cooling and filtering device body, facilitating cleaning and replacement of the filter plate, simplifying operation for workers, reducing the workload for workers, and meeting people's needs."

[0005] While this technical solution allows for convenient replacement and cleaning of the filter plate, it still requires cumbersome replacement operations, making cleaning inconvenient. Furthermore, it cannot be used flexibly in operational situations and cannot clean the inner walls of the equipment. Therefore, a cooling oil filtration device for an EDM machine is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a cooling oil filtration device for an EDM machine, which solves the problems of existing EDM cooling oil filtration devices being inconvenient to clean, having limited use, and having high operating costs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cooling oil filtration device for an EDM machine, comprising an upper cylinder and a lower cylinder connected vertically, a motor compartment installed in the lower cylinder, and a chuck connected above the motor compartment, a filter element being clamped on the chuck, and a telescopic component installed at the bottom of the lower cylinder, and a sealed sliding disc mounted on the outside of the motor compartment being rotatably connected to the telescopic component.

[0008] The upper cylinder is rotatably connected to a ring, a vertical plate is connected to the ring and a guide plate is slidably connected to it, a scraper is slidably connected to the vertical plate and a cleaning brush is slidably connected to the guide plate, and a pulling assembly is provided on the ring disc. The pulling assembly is used to pull the slide away from the vertical plate when the chuck moves down.

[0009] An unfolding assembly is provided between the vertical plate and the guide plate. The unfolding assembly is used to drive the scraper to unfold from the inside of the vertical plate to the outside and fit against the inner wall of the upper cylinder when the slide plate moves away from the vertical plate. It also drives the cleaning brush to unfold from the inside of the guide plate to the outside and fit against the outer side of the filter element. A driving assembly is also provided inside the upper cylinder. The driving assembly is used to drive the ring to rotate so that the scraper cleans the inner wall of the upper cylinder and the cleaning brush cleans the outer side of the filter element.

[0010] Preferably, the upper end of the upper cylinder is provided with an oil inlet port, and an oil inlet booster pump is also installed at the oil inlet port. An oil outlet flange cover is installed at the center of the upper cylinder. A groove is provided at the bottom of the filter element. A locking block is connected to the upper end of the chuck. The locking block cooperates with the groove to lock in place. The filter element is locked between the oil outlet flange cover and the chuck.

[0011] Preferably, the upper and lower sides of the inner wall of the upper cylinder are connected to annular slide rails, the annular ring is rotatably fitted inside the annular slide rails, the vertical plate is connected between the upper and lower annular rings, the annular ring is radially connected to a guide plate, and the sliding plate is slidably fitted on the outside of the guide plate.

[0012] Preferably, the traction assembly includes a second annular slide rail and a second circular ring. The second annular slide rail is connected to the circular disc, and the second circular ring is rotatably fitted inside the second annular slide rail. Each slide plate is rotatably connected to the second circular ring by a first rotating plate.

[0013] Preferably, the unfolding assembly includes a limiting slide rod, a slide block seat, a spring, a hinge seat, and a top plate. Both the vertical plate and the sliding plate have openings. A groove is formed on the side of the vertical plate and the sliding plate that are close to each other, and the groove communicates with the opening. The limiting slide rod is connected to the groove. The slide block seat is slidably connected to the opening and slidably sleeved on the outside of the limiting slide rod. The spring is sleeved on the outside of the limiting slide rod, and both ends of the spring are respectively connected to the inner walls of the slide block seat and the groove. The hinge seat is located between the openings on both sides. A second rotating plate is rotatably connected between the hinge seat and the two slide blocks on both sides. The top plate is connected to the extension end of the rotating plate second and the slide block seat at the rotatable connection point, and slides against and abuts against the slide block seat.

[0014] Preferably, the cleaning brush and the scraper are slidably connected in their respective openings, and the inner wall of the opening of the vertical plate is also connected to a rubber curtain with an opening, and the two sides of the scraper slide against the inner edge of the opening of the rubber curtain.

[0015] Preferably, the driving assembly includes a rotating ring, an electromagnetic magnetic rod, a ring gear, a motor, and a sleeve plate. The rotating ring is rotatably mounted on the upper end of the inner wall of the upper cylinder. The electromagnetic magnetic rod array is installed on the inner wall of the rotating ring. The ring gear is connected to the upper end of the rotating ring. The motor is installed on the upper end of the upper cylinder, and its output end extends into the upper cylinder, with a gear meshing with the ring gear connected to the extended end. The sleeve plate is connected to the upper end of the sliding plate, and the sleeve plate is slidably fitted on the outside of the electromagnetic magnetic rod. A cleaning ring brush is connected to the upper end of the upper cylinder, and the sleeve plate slides and scrapes against the outside of the cleaning ring brush. Rectifier plates are connected to both sides of the sliding plate.

[0016] Preferably, a limiting seat is connected to the second annular slide rail, and a limiting block is connected to one end of the first rotating plate near the second annular plate. The limiting block is a limiting block that engages with the limiting seat when the angle between the first rotating plate and the annular plate is greater than °.

[0017] Preferably, a lever is connected to the lower end of the annular disc, an oil collecting ring box is connected to the bottom of the lower cylinder, multiple fan-shaped filter screens are bolted to the upper end of the oil collecting ring box, a collection ring box is connected to the upper end of the fan-shaped filter screens, a solenoid valve pipe is connected through the lower cylinder and the oil collecting ring box, and fan-shaped maintenance doors are symmetrically opened on both sides of the lower cylinder.

[0018] Preferably, the lower cylinder is connected to a guide ring platform on the inner wall above the fan-shaped inspection door, the bottom of the circular disc is connected to a ring groove, the upper end of the telescopic component is connected to a retaining ring that rotates with the ring groove, and the inner wall of the upper cylinder and the outer edge of the upper end of the circular disc are also connected to arc-angle retaining teeth.

[0019] Compared with related technologies, the cooling oil filtration device for an EDM machine provided by the present invention has the following beneficial effects:

[0020] 1. This invention drives the chuck to rotate via the motor compartment, which in turn rotates the filter element mounted on it within the upper cylinder to centrifugally filter the cooling oil flowing in through the oil inlet. After filtration, the oil is discharged from the center of the filter element upwards through the oil outlet flange cover. During this process, the cooling oil flowing in through the oil inlet passes through an electromagnetic magnetic attracting rod, which attracts large metal fragments, thus adding an extra layer of magnetic filtration. Furthermore, the design of multiple oil inlets allows this device to be flexibly installed on an EDM machine for use, or it can be used independently and connected to multiple oil inlet pipes to improve processing efficiency.

[0021] 2. This invention uses a telescopic component to move the annular disc downwards, opening the bottom of the upper cylinder and connecting the upper and lower cylinders. The downward movement of the annular disc pulls the rotating plate, causing the sliding plate to slide away from the vertical plate. Through the linkage of the unfolding component, the scraper sliding in the opening of the vertical plate is pushed to fit against the inner wall of the upper cylinder, while the cleaning brush sliding in the opening of the sliding plate is pushed to fit against the outer side of the filter element. Driven by the drive component, the scraper cleans and scrapes the inner wall of the upper cylinder, and the cleaning brush cleans the outer side of the filter element. During the movement of the sliding plate, large metal particles adsorbed on the electromagnetic suction rod are pushed towards the cleaning ring brush by the sleeve plate. At the same time, the electromagnetic suction rod is de-energized to cancel the magnetic force, and the drive component also drives the rotating ring to rotate synchronously. The cleaning ring brush removes the large metal particles pushed close to the electromagnetic suction rod, which facilitates the cleaning of the inner wall of the upper cylinder and the filter element, and avoids the problem of frequent filter element replacement and increased usage costs.

[0022] 3. By moving the annular disc downwards, the present invention allows the limiting block to engage with the limiting seat. This enables the drive assembly to rotate simultaneously with the annular disc as the annular disc rotates via the sleeve plate. The downward movement of the annular disc moves the lever into the collection ring box, allowing a small amount of oil to enter through the oil inlet. This washes the interior of the upper cylinder, cleaned by the scraper and cleaning brush. The washed cooling oil is filtered through the fan-shaped filter and flows into the collection ring box for reuse. The fan-shaped filter removes debris, and the rotation of the lever agitates the collected cooling oil in the collection ring box above the fan-shaped filter, preventing excessive debris from clogging the filter and reducing the cooling oil flow efficiency. This allows for simultaneous cleaning and rinsing, improving the cleaning effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a cross-sectional view of the front structure of the present invention.

[0025] Figure 3 This is a top view of the structure of the present invention.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0027] Figure 5 This is a schematic diagram of the structure of the present invention without a lower cylinder.

[0028] Figure 6 This is a schematic diagram of the structure of the present invention without an upper cylinder and a lower cylinder.

[0029] Figure 7 This is a schematic diagram of the internal structure of the upper cylinder of the present invention.

[0030] Figure 8 This is a schematic diagram of the traction component of the present invention.

[0031] Figure 9 This is a schematic diagram of the structure of the unfolding component of the present invention.

[0032] Figure 10 This is a schematic diagram of the internal structure of the vertical plate and the sliding plate of the present invention.

[0033] Figure 11 This is a schematic diagram of the relevant structure between the vertical plate and the sliding plate of the present invention.

[0034] In the diagram: 1. Upper cylinder; 2. Lower cylinder; 3. Oil inlet; 4. Oil outlet flange cover; 5. Oil inlet booster pump; 6. Motor compartment; 7. Guide ring platform; 8. Chuck; 9. Filter element; 10. Clamping block; 11. Rotary ring; 12. Electromagnetic suction rod; 13. Ring gear; 14. Motor; 15. Gear; 16. Cleaning ring brush; 17. Telescopic component; 18. Circular disc; 19. Ring groove; 20. Clamping ring; 21. Arc-angle clamping tooth; 22. Lever; 23. Circular slide rail one; 24. Circular ring one; 25. Vertical plate; 26. 27. Guide plate; 28. Slide plate; 29. ​​Rectifier plate; 30. Sleeve plate; 31. Cleaning brush; 32. Scraper; 33. Circular slide rail II; 34. Circular ring II; 35. Rotating plate I; 36. Opening; 37. Tank; 38. Limiting slide rod; 39. Slide bar seat; 40. Spring; 41. Hinge seat; 42. Rotating plate II; 43. Top plate; 44. Rubber curtain; 45. Limiting block; 46. Limiting seat; 47. Collection ring box; 48. Oil collection ring box; 49. Fan-shaped filter screen; 50. Solenoid valve tube; 61. Fan-shaped inspection door. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-11 This invention provides a technical solution: a cooling oil filtration device for an EDM machine, comprising an upper cylinder 1 and a lower cylinder 2 connected vertically. A motor compartment 6 is installed inside the lower cylinder 2, and a chuck 8 is connected above the motor compartment 6. A filter element 9 is mounted on the chuck 8. A telescopic component 17 is installed at the bottom of the lower cylinder 2, and a sealed sliding annular disc 18, which is rotatably connected to the telescopic component 17, is mounted on the outside of the motor compartment 6. Figure 1 and 2 As shown, the diameter of the upper cylinder 1 is smaller than that of the lower cylinder 2, and the annular disk 18 is located at the junction of the upper cylinder 1 and the lower cylinder 2, and can perform a clamp seal on the lower end of the upper cylinder 1. The drive motor is sealed and installed inside the motor compartment 6, and the output end of the drive motor is sealed through the motor compartment 6. A chuck 8 is installed on the outside of the motor compartment 6.

[0037] A circular ring 24 is rotatably connected inside the upper cylinder 1. A vertical plate 25 is connected to the circular ring 24 and a guide plate 26 is slidably connected to it. A scraper 31 is slidably connected inside the vertical plate 25 and a cleaning brush 30 is slidably connected inside the guide plate 26. A pulling component is provided on the circular disc 18. The pulling component is used to pull the slide plate 27 away from the vertical plate 25 when the chuck 8 moves down.

[0038] An unfolding assembly is provided between the vertical plate 25 and the guide plate 26. The unfolding assembly is used to drive the scraper 31 to unfold from the inside of the vertical plate 25 to the outside and to fit against the inner wall of the upper cylinder 1 when the slide plate 27 slides away from the vertical plate 25. It also drives the cleaning brush 30 to unfold from the inside of the guide plate 26 to the outside and to fit against the outer side of the filter element 9. A driving assembly is also provided inside the upper cylinder 1. The driving assembly is used to drive the ring 24 to rotate so that the scraper 31 cleans the inner wall of the upper cylinder 1 and the cleaning brush 30 cleans the outer side of the filter element 9.

[0039] Furthermore, the upper end of the upper cylinder 1 is provided with an oil inlet port 3, and an oil inlet booster pump 5 is also installed at the oil inlet port 3. An oil outlet flange cover 4 is installed at the center of the upper cylinder 1. A groove is provided at the bottom of the filter element 9. A locking block 10 is connected to the upper end of the chuck 8. The locking block 10 cooperates with the groove to lock in place. The filter element 9 is locked between the oil outlet flange cover 4 and the chuck 8. Figure 1 and 2 As shown, the filter element 9 is located between the oil outlet flange cover 4 and the chuck 8, and can be stably driven to rotate by the chuck 8 through the cooperation of the groove and the locking block 10 to achieve centrifugal filtration. At the same time, the setting of multiple oil inlet ports 3 and the installation of oil inlet booster pumps 5 on the oil inlet ports 3 make it convenient to connect multiple cooling oil sources at the same time when the device is used alone. The device can also be installed on an EDM machine for follow-up use.

[0040] Furthermore, both the upper and lower sides of the inner wall of the upper cylinder 1 are connected to annular slide rails 23. A circular ring 24 is rotatably fitted within the annular slide rails 23. A vertical plate 25 is connected between the upper and lower circular rings 24. A guide plate 26 is radially connected to the circular rings 24. A sliding plate 27 is slidably fitted onto the outside of the guide plate 26. Figure 7 As shown, the rotating sleeve of the annular slide rail 23 and the circular ring 24 can enhance the stability of the circular ring 24 rotating inside the upper cylinder 1, and the setting of the guide plate 26 can also stably guide the sliding of the slide plate 27.

[0041] Furthermore, the traction assembly includes an annular slide rail 32 and a circular ring 33. The annular slide rail 32 is connected to the circular disc 18, and the circular ring 33 is rotatably fitted inside the annular slide rail 32. Each slide plate 27 is rotatably connected to the circular ring 33 by a rotating plate 34. Figure 8 As shown, when the annular disc 18 is moved downward by the telescopic component 17, opening the lower end of the upper cylinder 1 and forming a through connection with the lower cylinder 2, the rotating plate 34 will rotate, pulling the slide plate 27 to slide away from the vertical plate 25 on the guide plate 26.

[0042] Furthermore, the unfolding assembly includes a limiting slide rod 37, a slide block seat 38, a spring 39, a hinge seat 40, and a top plate 42. Openings 35 are provided on both the vertical plate 25 and the sliding plate 27. Grooves 36 are provided on the sides of the vertical plate 25 and the sliding plate 27 that are close to each other, and the grooves 36 communicate with the openings 35. The limiting slide rod 37 is connected within the groove 36. The slide block seat 38 is slidably connected within the openings 35 and slidably sleeved on the outside of the limiting slide rod 37. The spring 39 is sleeved on the outside of the limiting slide rod 37, and both ends of the spring 39 are connected to the inner walls of the slide block seat 38 and the groove 36, respectively. The hinge seat 40 is located between the openings 35 on both sides. A second rotating plate 41 is rotatably connected between the hinge seat 40 and the two slide blocks 38. The top plate 42 is connected to the extension end of the rotating plate 41 at the rotatable connection point between the second rotating plate 41 and the slide block seat 38, and slides against and abuts against the slide block seat 38. Figure 9 , 10 As shown in Figure 11, when the slide plate 27 slides away from the vertical plate 25, it will pull the rotating plate 41 to rotate, causing the two hinge seats 40 between the vertical plate 25 and the slide plate 27 to move away from each other. The rotation of the rotating plate 41 will also cause the top plate 42 connected to the extended end of the rotating connection with the slide seat 38 to come into contact with the slide seat 38. This will cause the scraper 31 and cleaning brush 30, which slide in the inner opening 35 of the vertical plate 25 and the slide plate 27 respectively, to move away from each other and extend to the outside of their respective openings 35. This will cause the scraper 31 to be in contact with the inner wall of the upper cylinder 1 and the cleaning brush 30 to be in contact with the outer side of the filter element 9, so as to achieve cleaning of the inner wall of the upper cylinder 1 and the filter element 9. At the same time, it can avoid frequent replacement of the filter element 9 and reduce the cost of use.

[0043] Furthermore, the cleaning brush 30 and the scraper 31 are slidably connected within their respective openings 35. A rubber curtain 43 with openings is also connected to the inner wall of the opening 35 of the vertical plate 25. The two sides of the scraper 31 slide against the inner edge of the opening of the rubber curtain 43, as shown. Figure 9 and 11 As shown, the reciprocating sliding of the slide plate 27 allows the scraper 31 and the cleaning brush 30 to slide within their respective openings 35. Consequently, the scraper 31 will scrape against the rubber curtain 43 within the opening 35 to achieve self-cleaning, and the cleaning brush 30 will scrape against the inner wall of the opening 35 to achieve self-cleaning. Thus, in the cleaning state, the scraper 31 and the cleaning brush 30 are self-cleaned by the occasional reciprocating sliding of the slide plate 27.

[0044] Furthermore, the drive assembly includes a rotating ring 11, an electromagnetic magnetic attracting rod 12, a ring gear 13, a motor 14, and a sleeve 29. The rotating ring 11 is rotatably mounted on the upper end of the inner wall of the upper cylinder 1. The electromagnetic magnetic attracting rod 12 is arrayed and installed on the inner wall of the rotating ring 11. The ring gear 13 is connected to the upper end of the rotating ring 11. The motor 14 is installed at the upper end of the upper cylinder 1, and its output end extends into the upper cylinder 1. A gear 15 meshing with the ring gear 13 is connected to the extended end. The sleeve 29 is connected to the upper end of the slide plate 27, and the sleeve 29 is slidably fitted on the outside of the electromagnetic magnetic attracting rod 12. A cleaning ring brush 16 is connected to the upper end of the upper cylinder 1. The sleeve 29 slides and scrapes against the outside of the cleaning ring brush 16. Rectifier plates 28 are connected to both sides of the slide plate 27. Figure 2 and 7 As shown, the electromagnetic magnetic suction rod 12 can perform the first magnetic filtration of the cooling oil entering through the oil inlet 3, avoiding the contamination of large metal particles, thereby enhancing the filtration effect of subsequent centrifugal filtration. Since the slide plate 27 is connected to the sleeve plate 29 and slides on the outside of the electromagnetic magnetic suction rod 12, when the motor 14 drives the rotating ring 11 to rotate the electromagnetic magnetic suction rod 12, the sleeve plate 29 will also rotate the ring 24. At the same time, the sliding of the slide plate 27 can also push the large particles of debris on the electromagnetic magnetic suction rod 12, which is de-energized and has lost its magnetic force, to the side closer to the cleaning ring brush 16 during cleaning. The rotation of the electromagnetic magnetic suction rod 12 will then wipe off the large particles of debris. The rectifier plate 28 is designed to facilitate the reshaping of the structure on the slide plate 27 when it is close to the vertical plate 25 and not rotating during centrifugal filtration, so that the cooling oil to be filtered in the upper cylinder 1 can be smoothly centrifuged.

[0045] Furthermore, a limiting seat 45 is connected to the second annular slide rail 32, and a limiting block 44 is connected to one end of the first rotating plate 34 near the second annular ring 33. When the angle between the first rotating plate 34 and the annular disk 18 is greater than 45°, the limiting block 44 engages with the limiting seat 45. Figure 8 As shown, when the annular disk 18 moves down, it pulls the slide plate 27, causing the scraper 31 to fit against the inner wall of the upper cylinder 1, and the cleaning brush 30 to fit against the filter element 9. At this time, the limiting block 44 and the limiting seat 45 are locked. In this state, the operation of the drive component drives the annular disk 18 to rotate.

[0046] Furthermore, a lever 22 is connected to the lower end of the annular disc 18, and an oil collecting ring box 47 is connected to the bottom of the lower cylinder 2. Multiple fan-shaped filter screens 48 are bolted to the upper end of the oil collecting ring box 47. A collection ring box 46 is connected to the upper end of the fan-shaped filter screens 48. A solenoid valve pipe 49 is connected through one side of the lower cylinder 2 and the oil collecting ring box 47. Fan-shaped inspection doors 50 are symmetrically opened on both sides of the lower cylinder 2. Figure 1 , 2As shown in Figure 6, the downward movement of the annular disc 18 will cause the lever 22 to move down into the collection ring box 46. At this time, when the scraper 31 and the cleaning brush 30 are cleaning, the cooling oil to be filtered can be introduced through the oil inlet 3 to rinse the upper cylinder 1. Then, the rinsed cooling oil will be guided into the collection ring box 46 and fall into the oil collection ring box 47 through the fan-shaped filter screen 48, so as to facilitate re-filtration and reuse through the solenoid valve pipe 49. The debris will be retained on the fan-shaped filter screen 48. The lever 22 can agitate the debris on the fan-shaped filter screen 48 to prevent the debris from accumulating and clogging the fan-shaped filter screen 48, thus reducing its flow efficiency.

[0047] Furthermore, the lower cylinder 2 has a guide ring platform 7 connected to the inner wall above the fan-shaped inspection door 50, the bottom of the annular disc 18 has an annular groove 19 connected to it, the upper end of the telescopic component 17 has a retaining ring 20 that rotates with the annular groove 19, and the inner wall of the upper cylinder 1 and the outer edge of the upper end of the annular disc 18 are also connected with arc-shaped retaining teeth 21, such as... Figure 2 As shown, the ring groove 19 and the retaining ring 20 can stabilize the rotation of the annular disk 18, while the arc-angle retaining teeth 21 can easily lock the annular disk 18 into place with the upper cylinder 1 when it moves upward to seal it, ensuring that the annular disk 18 can remain stable and not rotate, thus maintaining the seal. It can also collect the debris collected in the ring box 46 and can be cleaned by opening the fan-shaped maintenance door 50.

[0048] Working principle: The motor compartment 6 drives the chuck 8 to rotate, which in turn drives the filter element 9 mounted on it to rotate inside the upper cylinder 1. This centrifugal filters the cooling oil flowing in through the oil inlet 3. After being filtered by the filter element 9, the oil is discharged from the center of the filter element 9 through the oil outlet flange cover 4. During the process, the cooling oil to be filtered flowing in through the oil inlet 3 will pass through the electromagnetic magnetic suction rod 12. The electromagnetic magnetic suction rod 12 will attract large metal debris, thus adding an extra layer of magnetic filtration. The design of multiple oil inlets 3 allows this device to be flexibly installed on an EDM machine for use, or it can be used alone and connected to multiple oil inlets to improve processing efficiency.

[0049] The telescopic component 17 drives the annular disc 18 to move downward, opening the bottom of the upper cylinder 1 and allowing the upper cylinder 1 to connect with the lower cylinder 2. The downward movement of the annular disc 18 pulls the rotating plate 34 to rotate, causing the sliding plate 27 to slide away from the vertical plate 25. The top plate 42 connected to the rotating plate 41 pushes the sliding strip seat 38, pushing the scraper 31 sliding in the opening 35 of the vertical plate 25 until it is in contact with the inner wall of the upper cylinder 1. Meanwhile, the cleaning brush 30 sliding in the opening 35 of the sliding plate 27 is pushed until it is in contact with the outer side of the filter element 9. At this time, the motor 14 runs, driving the rotating ring 11 to rotate, allowing the filter element 2 to pass through the sleeve plate 2. The sleeved arrangement of filter element 9 and electromagnetic magnetic rod 12 drives scraper 31 to clean and scrape the inner wall of upper cylinder 1, and cleaning brush 30 to clean the outer side of filter element 9. During the movement of slide plate 27, large metal debris adsorbed on electromagnetic magnetic rod 12 will be pushed to cleaning ring brush 16 through sleeve plate 29. At the same time, the electromagnetic magnetic rod 12 is de-energized to cancel the magnetic force, and then the large metal debris pushed to the electromagnetic magnetic rod 12 near it is removed by cleaning ring brush 16. This facilitates the cleaning of the inner wall of upper cylinder 1 and filter element 9, and can also avoid the problem of frequent replacement of filter element 9 and increased use costs.

[0050] The downward movement of the annular disc 18 allows the limiting block 44 to engage with the limiting seat 45. When the sleeve 29 rotates along with the annular disc 24, it also synchronously drives the annular disc 18 to rotate. At this time, the downward movement of the annular disc 18 moves the lever 22 into the collecting ring box 46, allowing a small amount of oil to enter through the oil inlet 3. This washes the interior of the upper cylinder 1, which has been cleaned by the scraper 31 and cleaning brush 30. The washed cooling oil flows through the fan-shaped filter screen 48 to the oil collecting ring. Inside the box 47, the filter can be reused, and the fan-shaped filter 48 can filter out debris. During the process, the rotation of the lever 22 will agitate the flushing cooling oil collected in the collection ring box 46 above the fan-shaped filter 48, so as to avoid excessive debris causing blockage of the fan-shaped filter 48 and reducing the flow efficiency of the cooling oil. This allows for flushing during cleaning, improving the cleaning effect. The debris collected in the collection ring box 46 can also be cleaned by opening the fan-shaped maintenance door 50.

Claims

1. A cooling oil filtration device for an EDM machine, comprising an upper cylinder (1) and a lower cylinder (2) connected vertically, wherein a motor compartment (6) is installed inside the lower cylinder (2), and a chuck (8) is connected above the motor compartment (6), and a filter element (9) is mounted on the chuck (8), characterized in that, The bottom of the lower cylinder (2) is equipped with a telescopic component (17), and a sealed sliding sleeve on the outside of the motor compartment (6) is rotatably connected to the telescopic component (17). The upper cylinder (1) is rotatably connected to a ring (24), a vertical plate (25) is connected to the ring (24) and a guide plate (26) is slidably connected to it, a scraper (31) is slidably connected to the vertical plate (25), a cleaning brush (30) is slidably connected to the guide plate (26), and a pulling assembly is provided on the ring disc (18). The pulling assembly is used to pull the slide plate (27) away from the vertical plate (25) when the chuck (8) moves down. The upper and lower sides of the inner wall of the upper cylinder (1) are connected to the first and second ring slide rails (23). The first ring (24) is rotatably fitted inside the first ring slide rail (23). The vertical plate (25) is connected between the upper and lower rings (24). The first ring (24) is radially connected to the guide plate (26). The slide plate (27) is slidably fitted on the outside of the guide plate (26). The traction assembly includes the second ring slide rail (32) and the second ring (33). The second ring slide rail (32) is connected to the ring disc (18). The second ring (33) is rotatably fitted inside the second ring slide rail (32). Each slide plate (27) is rotatably connected to the second ring (33) by a rotating plate (34). An unfolding assembly is provided between the vertical plate (25) and the guide plate (26). The unfolding assembly is used to drive the scraper (31) to unfold from the inside of the vertical plate (25) to the outside and to fit against the inner wall of the upper cylinder (1) when the slide plate (27) slides away from the vertical plate (25). It also drives the cleaning brush (30) to unfold from the inside of the guide plate (26) to the outside and to fit against the outer side of the filter element (9). A driving assembly is also provided inside the upper cylinder (1). The driving assembly is used to drive the ring (24) to rotate so that the scraper (31) cleans the inner wall of the upper cylinder (1) and the cleaning brush (30) cleans the outer side of the filter element (9). The unfolding assembly includes a limiting slide rod (37), a slide block seat (38), a spring (39), a hinge seat (40), and a top plate (42). Both the vertical plate (25) and the sliding plate (27) have openings (35). A groove (36) is formed on the side of the vertical plate (25) and the sliding plate (27) that are close to each other, and the groove (36) communicates with the opening (35). The limiting slide rod (37) is connected within the groove (36), and the slide block seat (38) is slidably connected within the opening (35) and slidably fitted onto the limiting slide rod. The spring (39) is sleeved on the outside of the limiting slide rod (37), and the two ends of the spring (39) are respectively connected to the inner wall of the slide block seat (38) and the groove (36). The hinge seat (40) is located between the openings (35) on both sides. The hinge seat (40) and the two slide blocks (38) on both sides are rotatably connected to the rotating plate two (41). The top plate (42) is connected to the extension end of the rotating plate two (41) and the slide block seat (38) at the rotatable connection point, and slides against the slide block seat (38).

2. The cooling oil filtration device for an EDM machine according to claim 1, characterized in that, The upper cylinder (1) has an oil inlet port (3) arranged on its upper end. The oil inlet port (3) is also equipped with an oil inlet booster pump (5). An oil outlet flange cover (4) is installed in the center of the upper cylinder (1). A groove is provided at the bottom of the filter element (9). A locking block (10) is connected to the upper end of the chuck (8). The locking block (10) cooperates with the groove to lock in place. The filter element (9) is locked between the oil outlet flange cover (4) and the chuck (8).

3. The cooling oil filtration device for an EDM machine according to claim 1, characterized in that, The cleaning brush (30) and the scraper (31) are slidably connected in their respective openings (35). The inner wall of the opening (35) of the vertical plate (25) is also connected to a rubber curtain (43) with an opening. The two sides of the scraper (31) slide against the inner edge of the opening of the rubber curtain (43).

4. The cooling oil filtration device for an EDM machine according to claim 1, characterized in that, The drive assembly includes a rotating ring (11), an electromagnetic magnetic rod (12), a ring gear (13), a motor (14), and a sleeve plate (29). The rotating ring (11) is rotatably mounted on the upper end of the inner wall of the upper cylinder (1). The electromagnetic magnetic rod (12) array is installed on the inner wall of the rotating ring (11). The ring gear (13) is connected to the upper end of the rotating ring (11). The motor (14) is installed on the upper end of the upper cylinder (1), and its output end extends into the upper cylinder (1). A gear (15) meshing with the ring gear (13) is connected to the extended end. The sleeve plate (29) is connected to the upper end of the slide plate (27), and the sleeve plate (29) is slidably sleeved on the outside of the electromagnetic magnetic rod (12). A cleaning ring brush (16) is connected to the upper end of the upper cylinder (1). The sleeve plate (29) slides and scrapes against the outside of the cleaning ring brush (16). A rectifier plate (28) is connected to both sides of the slide plate (27).

5. The cooling oil filtration device for an EDM machine according to claim 1, characterized in that, The second annular slide rail (32) is connected to a limiting seat (45), and the first rotating plate (34) is connected to a limiting block (44) at one end near the second annular ring (33). The limiting block (44) is a limiting block that locks with the limiting seat (45) when the angle between the first rotating plate (34) and the annular disk (18) is greater than 45°.

6. The cooling oil filtration device for an EDM machine according to claim 5, characterized in that, The lower end of the circular disc (18) is connected to a lever (22), the bottom of the lower cylinder (2) is connected to an oil collecting ring box (47), the upper end face of the oil collecting ring box (47) is bolted with multiple fan-shaped filter screens (48), the upper end of the oil collecting ring box (47) is connected to a collection ring box (46), a solenoid valve pipe (49) is connected through the lower cylinder (2) and the oil collecting ring box (47), and fan-shaped maintenance doors (50) are symmetrically opened on both sides of the lower cylinder (2).

7. The cooling oil filtration device for an EDM machine according to claim 6, characterized in that, The lower cylinder (2) is connected to a guide ring platform (7) on the inner wall above the fan-shaped inspection door (50). The bottom of the circular disc (18) is connected to a ring groove (19). The upper end of the telescopic component (17) is connected to a retaining ring (20) that rotates with the ring groove (19). The inner wall of the upper cylinder (1) and the outer edge of the upper end of the circular disc (18) are also connected to arc-angle retaining teeth (21).

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