A multi-stage filtering device and filtering method for metal scraps

Abstract

The present invention relates to the field of metal debris filtration, and specifically to a multi-stage metal debris filtration device and a filtration method. The device includes a filtration box, on the outer surface of which a reduction motor is fixedly installed. The output end of the reduction motor is fixed with a first rotating shaft, which penetrates the filtration box and is rotatably connected inside the filtration box. A first baffle is fixed on the outer surface of the first rotating shaft. A guiding frame is fixedly installed inside the filtration box, and the bottom of the guiding frame is arc-shaped. In the present invention, the reduction motor drives the first baffle to swing intermittently left and right, so that the cutting fluid in the guiding frame periodically flows into the filtration frames on the left and right sides through the intermittently swinging second baffle, so as to realize the cyclic relay filtration of the two filtration frames. The unfiltered filter cotton can be immersed in the water-containing frame, so that the metal debris on the water-containing frame escapes into the water in the water-containing frame, thereby being able to automatically clean the filter cotton periodically without stopping the machine operation, and the production efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of metal chip filtration, and particularly relates to a multi-stage metal chip filtration device and a filtration method. Background Art

[0002] During the machining process of a machine tool machining center for various workpieces, a lot of metal chips will be generated, and the sizes and shapes of the metal chips are different. It is necessary to flush the workpiece and the tool with cutting fluid to cool the tool and the workpiece, and wash away the metal chips generated during the machining process. The metal chips will be discharged along with the cutting fluid, and the used cutting fluid can be recycled after treatment.

[0003] In order to ensure the treatment effect of the cutting fluid, a common method is to filter the chips in the cutting fluid. The commonly used method is to layer-filter with filter meshes of different mesh numbers. The chips are very easy to get stuck on the filter mesh with smaller mesh holes, and it is necessary to frequently stop the machine to disassemble and clean the filter mesh to prevent the filter mesh from being blocked, which is rather troublesome and the production efficiency is low.

[0004] Therefore, the present invention provides a multi-stage metal chip filtration device and a filtration method to solve the above problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the deficiencies of the prior art, the present invention provides a multi-stage metal chip filtration device and a filtration method to solve the problems that when layer-filtering with filter meshes of different mesh numbers, the chips are very easy to get stuck on the filter mesh with smaller mesh holes, and it is necessary to frequently stop the machine to disassemble and clean the filter mesh to prevent the filter mesh from being blocked, which is rather troublesome and the production efficiency is low.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] A multi-stage metal chip filtration device includes a filtration tank. A reduction motor is fixedly installed on the outer surface of the filtration tank. The output end of the reduction motor is fixed with a first rotating shaft, and the first rotating shaft penetrates through the filtration tank and is rotatably connected inside the filtration tank. A first baffle is fixed on the outer surface of the first rotating shaft. A guiding frame is fixedly installed inside the filtration tank. The bottom of the guiding frame is arc-shaped, and the top of the first baffle is in contact with the arc-shaped bottom of the guiding frame. A feeding port is opened at the bottom of the guiding frame. A second baffle is fixed on the top of the first baffle, and the second baffle is rotatably arranged inside the feeding port and is adapted to the feeding port. Filter frames are fixedly installed on both side surfaces of the first baffle and are arranged oppositely.

[0008] Preferably, a vertically arranged fixed column is fixed to the bottom of the filter frame. A connecting plate slides vertically on the fixed column. A second spring is sleeved outside the fixed column, and two ends of the second spring are respectively connected to the filter frame and the connecting plate. One end of the connecting plate is fixed with a U-shaped frame. A filter cotton is fixed inside the U-shaped frame, and the filter cotton is in contact with one end of the filter frame away from the first baffle. A water receiving frame is placed at the bottom of the filter box. A slide rail is horizontally arranged at the bottom of the filter frame. A moving block slides inside the slide rail. A first wedge block is fixed to the moving block. One end of the connecting plate away from the U-shaped frame is fixedly connected with a fourth wedge block, and the fourth wedge block is slidably matched with the first wedge block. Guide columns slide vertically on the front and rear sides of the filter frame. A third wedge block is fixed to the bottom of the guide column. A round rod is fixed to the first wedge block. Second wedge blocks are respectively fixed to two ends of the round rod, and the second wedge blocks are slidably matched with the third wedge block. A horizontal plate is horizontally and fixedly arranged inside the filter box. One of the guide columns is in contact with the bottom surface of the horizontal plate.

[0009] Preferably, a plurality of inclined mounting frames are fixedly arranged inside the filter box from top to bottom, and filter plates are inclined inside the mounting frames. Slide grooves are formed in the inner walls of the mounting frames. Sliders are fixed at corresponding positions of the filter plates. The filter plates slide inside the mounting frames through the sliders and the slide grooves. The pore diameters of the filter plates gradually decrease from top to bottom. Guide grooves are formed on both sides of the mounting frames. The guide frame is located below the lowermost mounting frame and is used for conveying the cutting fluid preliminarily filtered by the filter plates.

[0010] Preferably, a linkage mechanism is arranged inside the filter box. The linkage mechanism includes a rack. A sliding block is fixed to the rack. A vertically oriented sliding groove is formed in the inner wall of the filter box. The rack slides up and down inside the filter box through the sliding block and the sliding groove. First gears are respectively fixed to the front and rear ends of the first rotating shaft. Second rotating shafts rotate on the front and rear sides of the mounting frame. Second gears are fixed to the second rotating shafts. The teeth on the rack are respectively matched and meshed with the first gears and the second gears. A dial is fixed to the second rotating shaft. Connecting strips are arranged on the front and rear sides of the mounting frame. Two ends of each connecting strip are respectively fixed with a connecting rod, and one end of the connecting rod is fixed to the filter plate. The other end of the connecting rod slides on the mounting frame. A third spring is sleeved outside the connecting rod, and two ends of the third spring are respectively connected to the connecting strip and the mounting frame. A fixing plate is fixed to the connecting strip, and the dial and the fixing plate are close to each other.

[0011] Preferably, liquid collecting frames are arranged on both sides inside the filtering box. The openings of the two liquid collecting frames face the U-shaped frame. A horizontally arranged guide rod is fixed inside the filtering box. The guide rod is slidably connected to the bottom of the liquid collecting frame. A first spring is arranged outside the guide rod, and both ends of the first spring are respectively connected to the inner wall of the filtering box and the bottom of the liquid collecting frame. A liquid outlet hose is communicated with the inner bottom wall of the liquid collecting frame, and one end of the liquid outlet hose away from the liquid collecting frame extends to the outside of the filtering box and is communicated with an external collecting device through a pump.

[0012] Preferably, a switch door is provided on the side of the filtering box, and the water-containing frame is removed from the inside of the filtering box through the switch door.

[0013] Preferably, the upper surface of the filtering frame is stepped, and grooves are provided at the junction of each step.

[0014] Preferably, a liquid inlet pipe is communicated with the inner top wall of the filtering box, and the liquid inlet pipe is located at the middle position above the filter plate.

[0015] A filtering method for a multi-stage metal chip filtering device includes the following steps:

[0016] S1: The cutting fluid enters the filtering box through the liquid inlet pipe. After being filtered by the filter plate, the preliminarily filtered cutting fluid enters the next layer of filter plate through the holes in the filter plate until it enters the guiding frame. The blocked metal chips roll down the filter plate into the water-containing frame at the bottom of the filtering box;

[0017] S2: The cutting fluid entering the guiding frame falls onto the filtering frame through the guiding of the second baffle. Part of the metal chips stay in the grooves, and the other part of the metal chips are blocked on the filtering frame by the filter cotton. The cutting fluid enters the liquid collecting frame after being finely filtered by the filter cotton and is discharged through the liquid outlet hose;

[0018] S3: When it is necessary to filter with the other filtering frame, the reduction motor drives the first rotating shaft to swing, so that the guiding column in contact with the horizontal plate disengages from the horizontal plate. Under the restoring force of the second spring, the connecting plate drives the U-shaped frame and the filter cotton to move downwards. The fourth wedge block drives the first wedge block to reset, and the second wedge block drives the third wedge block to move upwards and reset until the filter cotton is immersed in the water in the water-containing frame. On the contrary, the guiding column on the other side will contact the horizontal plate and be squeezed by the horizontal plate, causing the third wedge block to descend and drive the second wedge block and the first wedge block to slide horizontally at the bottom of the filtering frame, so that the second spring is compressed, and the U-shaped frame and the filter cotton also move up to the position of the blanking place of the filtering frame, so that the filter cotton filters the cutting fluid and blocks the passage of metal chips;

[0019] S4: When the reduction motor drives the filter frame to rotate, it will synchronously drive the first gear to rotate, thereby causing the rack to move up and down. The up and down movement of the rack drives the second gear and the second rotating shaft to rotate, causing the paddle to push the fixed plate, so that the connecting bar drives the filter plate to move up and down. When the paddle pushes the fixed plate and disengages from the fixed plate, the third spring will instantaneously reset against the connecting bar and the connecting rod, causing the filter plate to instantaneously reset, thereby intermittently shaking off the metal debris staying on the filter plate through the vibration force.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention drives the first baffle to swing left and right intermittently through a reduction motor, so that the cutting fluid in the guiding frame periodically flows into the filter frames on the left and right sides through the intermittently swinging second baffle, so as to realize the cyclic relay filtration of the two filter frames. It can soak the unfiltered filter cotton in the water holding frame, so that the metal debris on the water holding frame escapes into the water in the water holding frame, thereby being able to automatically clean the filter cotton periodically without stopping the machine, and the production efficiency is high.

[0022] 2. When the other filter frame needs to be filtered, the present invention drives the first rotating shaft to swing through a reduction motor, so that the guiding column in contact with the horizontal plate disengages from the horizontal plate. Under the restoring force of the second spring, the connecting plate drives the U-shaped frame and the filter cotton to move downwards. The fourth wedge block drives the first wedge block to reset, and the second wedge block drives the third wedge block to move upwards and reset until the filter cotton is soaked in the water in the water holding frame. At this time, the top of the filter cotton moves to the lower part of the filter frame, and the filter cotton no longer blocks the debris, so that the debris on the filter frame can better slide into the water.

[0023] 3. Through the cooperative design of the rack, the first gear, the second gear, the paddle, the fixed plate, the connecting bar, the paddle and the connecting rod, whenever the first rotating shaft drives the filter frame to swing, it will synchronously drive the first gear to rotate, thereby causing the rack to move up and down. The up and down movement of the rack drives the second gear and the second rotating shaft to rotate, causing the paddle to push the fixed plate, so that the connecting bar drives the filter plate to move up and down. When the paddle pushes the fixed plate and disengages from the fixed plate, the third spring will instantaneously reset against the connecting bar and the connecting rod, causing the filter plate to instantaneously reset, thereby intermittently shaking off the metal debris staying on the filter plate through the vibration force, and the filtering effect is better. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0025] Figure 2 It is the first sectional view of the present invention.

[0026] Figure 3 It is the Figure 2 enlarged view of the structure at A in the present invention.

[0027] Figure 4 This is the second cross-sectional view of the present invention.

[0028] Figure 5 This is a schematic diagram of the connection between the mounting frame and the filter plate of the present invention.

[0029] Figure 6 This is the present invention Figure 5 Schematic diagram of the enlarged structure at position B in the present invention.

[0030] Figure 7 This is a schematic diagram of the connection between the second wedge block and the third wedge block of the present invention.

[0031] Figure 8 This is a schematic diagram of the bottom of the filter frame of the present invention.

[0032] Figure 9 This is a schematic diagram of the inside of the guiding frame of the present invention.

[0033] In the figure: 1, filter box; 2, liquid inlet pipe; 3, switch door; 4, reduction motor; 5, liquid outlet hose; 6, liquid collection frame; 7, first spring; 8, guiding rod; 9, first gear; 10, rack; 11, first wedge block; 12, water holding frame; 13, second wedge block; 14, third wedge block; 15, filter frame; 16, first rotating shaft; 17, guiding frame; 18, first baffle; 19, guiding column; 20, second spring; 21, U-shaped frame; 22, connecting plate; 23, fixed column; 24, fourth wedge block; 25, mounting frame; 26, connecting strip; 27, fixing plate; 28, dial; 29, second rotating shaft; 30, second gear; 31, groove; 32, filter cotton; 33, moving block; 34, slide rail; 35, filter plate; 36, connecting rod; 37, guiding groove; 38, third spring; 39, discharge opening; 40, horizontal plate; 41, round rod; 42, second baffle. Detailed implementation manners

[0034] The following will explain each embodiment of the present invention with reference to the accompanying drawings in detail. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0035] A metal debris multi-stage filtering device and filtering method, as shown in the attached Figures 1-9As shown in the figure, it includes a filter box 1. Inside the filter box 1, several inclined mounting frames 25 are fixedly arranged from top to bottom. And filter plates 35 are inclinedly arranged inside the mounting frames 25. The pore sizes of the filter plates 35 gradually decrease from top to bottom, enabling multi-stage filtration. A liquid inlet pipe 2 is connected to the inner top wall of the filter box 1. The liquid inlet pipe 2 is located at the middle position above the filter plates 35. Guide grooves 37 are formed on both sides of the mounting frames 25. A guide frame 17 is fixedly arranged inside the filter box 1. The guide frame 17 is located below the lowermost mounting frame 25. The guide frame 17 is used to convey the cutting fluid preliminarily filtered by the filter plates 35. Through the inclined filter plates 35, the cutting fluid flowing down from the liquid inlet pipe 2 is filtered by the filter plates 35. The cutting fluid falls into the guide frame 17, while the metal chips slide down from the lower side of the mounting frame 25 through the guide grooves 37.

[0036] The bottom of the guide frame 17 is arc-shaped. A reduction motor 4 is fixedly installed on the outer surface of the filter box 1. The output end of the reduction motor 4 is fixed with a first rotating shaft 16. The first rotating shaft 16 penetrates the filter box 1 and is rotatably connected inside the filter box 1. A first baffle 18 is fixed on the outer surface of the first rotating shaft 16. And the top of the first baffle 18 is in contact with the arc-shaped bottom of the guide frame 17. When the first baffle 18 swings, it always fits the inner wall of the guide frame 17. A discharge opening 39 is formed at the bottom of the guide frame 17. A second baffle 42 is fixed on the top of the first baffle 18. The top of the second baffle 42 abuts against the inner wall of the guide frame 17. And the second baffle 42 is rotatably arranged inside the discharge opening 39 and is adapted to the discharge opening 39. Filter frames 15 are fixedly arranged on both sides of the first baffle 18 in a relative manner. The front and rear sides of the second baffle 42 are in contact with the front and rear side walls inside the discharge opening 39. The reduction motor 4 drives the first baffle 18 to swing left and right intermittently, so that the cutting fluid in the guide frame 17 periodically flows into the filter frames 15 on the left and right sides through the intermittently swinging second baffle 42, so as to realize the cyclic relay filtration of the two filter frames 15. The filter frame 15 in the process of filtration work is in a horizontal state, while the filter frame 15 not in filtration is inclined downward, and can pour down the chips accumulated on the filter frame 15. The front and rear side spacing of the second baffle 42 is smaller than the front and rear side spacing of the first baffle 18. And the second baffle 42 is located at the middle position of the first baffle 18, so that the cutting fluid flowing down along the second baffle 42 will not flow to the outside of the front and rear ends of the filter frame 15, ensuring that the cutting fluid flowing down from the guide frame 17 passes through the filter frame 15 and is filtered.

[0037] The upper surface of the filter box 15 is stepped, and a groove 31 is provided at the junction of each step. By means of the provided groove 31, debris in the cutting fluid can be retained in the groove 31. A vertically arranged fixed column 23 is fixed to the bottom of the filter box 15. A connecting plate 22 slides vertically on the fixed column 23. A second spring 20 is sleeved outside the fixed column 23, and the two ends of the second spring 20 are respectively connected to the filter box 15 and the connecting plate 22. One end of the connecting plate 22 is fixed with a U-shaped frame 21. A filter cotton 32 is fixed inside the U-shaped frame 21, and the filter cotton 32 is in contact with one end of the filter box 15 away from the first baffle 18. A water holding frame 12 is placed at the bottom of the filter box 1. Purified water is provided inside the water holding frame 12. Through the cyclic filtration of the two filter boxes 15, the unfiltered filter cotton 32 can be immersed in the water holding frame 12, so that the metal debris on the water holding frame 12 escapes into the water in the water holding frame 12, thereby enabling the automatic cleaning of the filter cotton 32 periodically without the need for shutdown operation, with high production efficiency. A switch door 3 is provided on the side of the filter box 1. The water holding frame 12 is removed from the inside of the filter box 1 through the switch door 3.

[0038] A slide rail 34 is horizontally provided at the bottom of the filter box 15. A moving block 33 slides inside the slide rail 34. A first wedge block 11 is fixed on the moving block 33. One end of the connecting plate 22 away from the U-shaped frame 21 is fixedly connected with a fourth wedge block 24, and the fourth wedge block 24 is slidably adapted to the first wedge block 11. Guide columns 19 are vertically slid on the front and rear sides of the filter box 15. A third wedge block 14 is fixed at the bottom of the guide column 19. A round rod 41 is fixed on the first wedge block 11. Second wedge blocks 13 are respectively fixed at both ends of the round rod 41, and the second wedge blocks 13 are slidably adapted to the third wedge block 14. A horizontal plate 40 is horizontally fixed inside the filter box 1. One of the guide columns 19 is in contact with the bottom surface of the horizontal plate 40. The filter box 15 being filtered is in a horizontal state. The second spring 20 is in a compressed state. At the same time, the U-shaped frame 21 and the filter cotton 32 are located at the blanking position of the filter box 15. When the other filter box 15 needs to be filtered, the reduction motor 4 drives the first rotating shaft 16 to swing, so that the guide column 19 in contact with the horizontal plate 40 is separated from the horizontal plate 40. Under the restoring force of the second spring 20, the connecting plate 22 drives the U-shaped frame 21 and the filter cotton 32 to move downward. The fourth wedge block 24 drives the first wedge block 11 to reset. The second wedge block 13 drives the third wedge block 14 to move upward and reset until the filter cotton 32 is immersed in the water in the water holding box 12. At this time, the top of the filter cotton 32 moves below the filter box 15, and the filter cotton 32 no longer blocks the debris, so that the debris on the filter box 15 can better slide into the water. On the contrary, the other guide column 19 will contact the horizontal plate 40 and be squeezed by the horizontal plate 40, causing the third wedge block 14 to descend and drive the second wedge block 13 and the first wedge block 11 to horizontally slide at the bottom of the filter box 15, so that the second spring 20 is compressed, and the U-shaped frame 21 and the filter cotton 32 also move up to the blanking position of the filter box 15, so that the filter cotton 32 filters the cutting fluid and blocks the passage of metal debris.

[0039] Liquid collecting frames 6 are arranged on both sides inside the filtering box 1. The openings of the two liquid collecting frames 6 face the U-shaped frame 21, and a part of the U-shaped frame 21 in the filtering state is located inside the liquid collecting frame 6. The cutting fluid filtered by the filter cotton 32 enters the liquid collecting frame 6 and is collected through the liquid outlet hose 5. The opposite side of the liquid collecting frame 6 and the U-shaped frame 21 is an inclined side, which is convenient for the U-shaped frame 21 to enter or exit the liquid collecting frame 6 when it flips. A horizontally arranged guide rod 8 is fixed inside the filtering box 1. The guide rod 8 is slidably connected to the bottom of the liquid collecting frame 6. A first spring 7 is arranged outside the guide rod 8, and both ends of the first spring 7 are respectively connected to the inner wall of the filtering box 1 and the bottom of the liquid collecting frame 6. When the U-shaped frame 21 swings, the U-shaped frame 21 contacts the inclined side of the liquid collecting frame 6, so that the liquid collecting frame 6 slides horizontally under the guidance of the inclined side and the guide rod 8, enabling the liquid collecting frame 6 to avoid the swinging path of the U-shaped frame 21. After the U-shaped frame 21 finishes swinging, the liquid collecting frame 6 is reset by the first spring 7. The inner bottom wall of the liquid collecting frame 6 is communicated with a liquid outlet hose 5, and one end of the liquid outlet hose 5 far away from the liquid collecting frame 6 extends to the outside of the filtering box 1 and is connected to an external collecting device through a pump.

[0040] A linkage mechanism is provided inside the filter box 1, and the linkage mechanism includes a rack 10, on which a sliding block is fixed, and a vertical sliding groove is provided on the inner wall of the filter box 1, and the rack 10 slides up and down inside the filter box 1 through the sliding block and the sliding groove, and the front and rear ends of the first rotating shaft 16 are fixed with a first gear 9, and the front and rear sides of the mounting frame 25 are both rotated with a second rotating shaft 29, and a second gear 30 is fixed on the second rotating shaft 29, and the teeth on the rack 10 are respectively adapted to mesh with the first gear 9 and the second gear 30, and a paddle 28 is fixed on the second rotating shaft 29, and a connecting strip 26 is provided on the front and rear sides of the mounting frame 25, and a connecting rod 36 is fixed at both ends of the connecting strip 26, and one end of the connecting rod 36 is fixedly connected to the filter plate 35, and the other end of the connecting rod 36 slides on the mounting frame 25, and a sliding groove is provided on the inner wall of the mounting frame 25, and a slider is fixed at the corresponding position of the filter plate 35, and the filter plate 35 slides inside the mounting frame 25 through the slider and the sliding groove, and the outer sleeve of the connecting rod 36 is provided There is a third spring 38, and the two ends of the third spring 38 are respectively connected to the connecting bar 26 and the mounting frame 25. A fixing plate 27 is fixed on the connecting bar 26, and the paddle 28 and the fixing plate 27 are close to each other. Through the coordinated design of the rack 10, the first gear 9, the second gear 30, the paddle 28, the fixing plate 27, the connecting bar 26, the paddle 28 and the connecting rod 36, whenever the first rotating shaft 16 swings with the filter frame 15, the first gear 9 will be synchronously driven to rotate, so that the rack 10 is lifted and lowered, and the lifting and lowering of the rack 10 drives the second gear 30 and the second rotating shaft 29 to rotate, so that the paddle 28 paddles the fixing plate 27, so that the connecting bar 26 drives the filter plate 35 to lift and lower. When the paddle 28 paddles the fixing plate 27 and disengages from the fixing plate 27, the third spring 38 will be instantly reset next to the connecting bar 26 and the connecting rod 36, so that the filter plate 35 is instantly reset, so that the metal debris remaining on the filter plate 35 is intermittently shaken off by the vibration force, and the filtering effect is better.

[0041] A filtering method of a metal debris multi-stage filtering device comprises the following steps:

[0042] S1: The cutting fluid enters the filter box 1 through the liquid inlet pipe 2, and is filtered by the filter plate 35. The initially filtered cutting fluid enters the next filter plate 35 through the holes on the filter plate 35, and then enters the guide frame 17. The blocked metal debris rolls through the filter plate 35 and falls into the water frame 12 at the bottom of the filter box 1;

[0043] S2: The cutting fluid entering the guide frame 17 falls onto the filter frame 15 through the guidance of the second baffle 42, wherein a part of the metal debris stays in the groove 31, and another part of the metal debris is blocked by the filter cotton 32 on the filter frame 15. The cutting fluid enters the liquid collecting frame 6 after fine filtration by the filter cotton 32 and is discharged through the liquid outlet hose 5;

[0044] S3: When the filter frame 15 on the other side needs to filter, the reduction motor 4 drives the first rotating shaft 16 to swing, so that the guide column 19 in contact with the horizontal plate 40 is separated from the horizontal plate 40, and the connecting plate 22 moves down with the U-shaped frame 21 and the filter cotton 32 under the reset force of the second spring 20, and the fourth wedge block 24 drives the first wedge block 11 to reset, and the second wedge block 13 drives the third wedge block 14 to move up and reset until the filter cotton 32 is immersed in the water of the water frame 12. On the contrary, the guide column 19 on the other side will contact the horizontal plate 40 and be squeezed by the horizontal plate 40, so that the third wedge block 14 descends and drives the second wedge block 13 and the first wedge block 11 to slide horizontally at the bottom of the filter frame 15, so that the second spring 20 is compressed, and the U-shaped frame 21 and the filter cotton 32 also move up to the unloading position of the filter frame 15, so that the filter cotton 32 filters the cutting fluid and blocks the passage of metal debris;

[0045] S4: When the reduction motor 4 drives the filter frame 15 to rotate, it will synchronously drive the first gear 9 to rotate, so that the rack 10 is lifted and lowered. The lifting and lowering of the rack 10 drives the second gear 30 and the second rotating shaft 29 to rotate, so that the paddle 28 moves the fixed plate 27, so that the connecting bar 26 drives the filter plate 35 to lift and lower. When the paddle 28 moves the fixed plate 27 and disengages from the fixed plate 27, the third spring 38 will instantly reset next to the connecting bar 26 and the connecting rod 36, so that the filter plate 35 is instantly reset, thereby intermittently shaking off the metal debris remaining on the filter plate 35 through vibration force.

[0046] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A multi-stage filtering device for metal debris, comprising a filter box (1), characterized in that: A reduction motor (4) is fixedly mounted on the outer surface of the filter box (1), a first rotating shaft (16) is fixed to the output end of the reduction motor (4), the first rotating shaft (16) penetrates the filter box (1) and is rotatably connected to the inside of the filter box (1), a first baffle (18) is fixed to the outer surface of the first rotating shaft (16), a guide frame (17) is fixed to the inside of the filter box (1), the bottom of the guide frame (17) is arc-shaped, and the top of the first baffle (18) is in contact with the arc-shaped bottom of the guide frame (17), a feed opening (39) is provided at the bottom of the guide frame (17), a second baffle (42) is fixed to the top of the first baffle (18), and the second baffle (42) is rotatably arranged inside the feed opening (39) and is adapted to the feed opening (39), and filter frames (15) arranged opposite to each other are fixed to both side surfaces of the first baffle (18); A vertically arranged fixing column (23) is fixed at the bottom of the filter frame (15), a connecting plate (22) is vertically slidably arranged on the fixing column (23), a second spring (20) is sleeved on the outside of the fixing column (23), and two ends of the second spring (20) are respectively connected to the filter frame (15) and the connecting plate (22), a U-shaped frame (21) is fixed at one end of the connecting plate (22), a filter cotton (32) is fixed inside the U-shaped frame (21), and the filter cotton (32) is in contact with an end of the filter frame (15) away from the first baffle (18), a water holding frame (12) is placed at the bottom of the filter box (1), a slide rail (34) is provided in the horizontal direction at the bottom of the filter frame (15), and a moving block (33) is slidably arranged inside the slide rail (34), A first wedge block (11) is fixed on the moving block (33); a fourth wedge block (24) is fixedly connected to one end of the connecting plate (22) away from the U-shaped frame (21), and the fourth wedge block (24) is slidably matched with the first wedge block (11); guide columns (19) are vertically slidably provided on the front and rear sides of the filter frame (15); a third wedge block (14) is fixed to the bottom of the guide column (19); a round rod (41) is fixed on the first wedge block (11); second wedge blocks (13) are respectively fixed at both ends of the round rod (41), and the second wedge block (13) is slidably matched with the third wedge block (14); a horizontal plate (40) is horizontally fixed inside the filter box (1), and one of the guide columns (19) is in contact with the bottom surface of the horizontal plate (40); A plurality of inclined mounting frames (25) are fixed from top to bottom inside the filter box (1), and filter plates (35) are arranged inclined inside the mounting frames (25). A slide groove is provided on the inner wall of the mounting frame (25), and a slider is fixed at the corresponding position of the filter plate (35). The filter plate (35) slides inside the mounting frame (25) through the slider and the slide groove, and the aperture of the filter plate (35) gradually decreases from top to bottom. Guide grooves (37) are provided on both sides of the mounting frame (25), and the guide frame (17) is located below the lowest mounting frame (25). The guide frame (17) is used to convey the cutting fluid preliminarily filtered by the filter plate (35); A linkage mechanism is arranged inside the filter box (1), the linkage mechanism comprising a rack (10), a sliding block is fixed on the rack (10), a vertical sliding groove is provided on the inner wall of the filter box (1), the rack (10) slides up and down inside the filter box (1) through the sliding block and the sliding groove, a first gear (9) is fixed to the front and rear ends of the first rotating shaft (16), a second rotating shaft (29) is rotatable on the front and rear sides of the mounting frame (25), a second gear (30) is fixed to the second rotating shaft (29), the teeth on the rack (10) are respectively adapted to mesh with the first gear (9) and the second gear (30), A paddle (28) is fixed on the second rotating shaft (29), and connecting strips (26) are provided on both the front and rear sides of the installation frame (25). Connecting rods (36) are fixed on both ends of the connecting strip (26), and one end of the connecting rod (36) is fixedly connected to the filter plate (35), and the other end of the connecting rod (36) slides on the installation frame (25). A third spring (38) is sleeved on the outside of the connecting rod (36), and the two ends of the third spring (38) are respectively connected to the connecting strip (26) and the installation frame (25). A fixing plate (27) is fixed on the connecting strip (26), and the paddle (28) and the fixing plate (27) are close to each other.

2. The metal debris multi-stage filtering device according to claim 1, characterized in that: Liquid collecting frames (6) are arranged on both sides of the filter box (1), and the openings of the two liquid collecting frames (6) face the U-shaped frame (21). A horizontally arranged guide rod (8) is fixed inside the filter box (1), and the guide rod (8) is slidably connected to the bottom of the liquid collecting frame (6). A first spring (7) is arranged outside the guide rod (8), and the two ends of the first spring (7) are respectively connected to the inner wall of the filter box (1) and the bottom of the liquid collecting frame (6). The inner bottom wall of the liquid collecting frame (6) is connected to a liquid outlet hose (5), and one end of the liquid outlet hose (5) away from the liquid collecting frame (6) extends to the outside of the filter box (1) and is connected to an external collection device through a pump.

3. The metal debris multi-stage filtering device according to claim 2, characterized in that: A switch door (3) is provided on the side of the filter box (1), and the water holding frame (12) is moved out of the filter box (1) through the switch door (3).

4. The metal debris multi-stage filtering device according to claim 3, characterized in that: The upper surface of the filter frame (15) is in a step shape, and a groove (31) is provided at the junction of each step.

5. The metal debris multi-stage filtering device according to claim 4, characterized in that: The inner top wall of the filter box (1) is connected to a liquid inlet pipe (2), and the liquid inlet pipe (2) is located in the middle position above the filter plate (35).

6. A filtering method using the metal debris multi-stage filtering device according to claim 5, characterized in that: The following steps are involved: S1: The cutting fluid enters the filter box (1) through the liquid inlet pipe (2), and is filtered by the filter plate (35). The initially filtered cutting fluid enters the next filter plate (35) through the holes on the filter plate (35) until it enters the guide frame (17). The blocked metal debris passes through the filter plate (35) and rolls down into the water frame (12) at the bottom of the filter box (1); S2: The cutting fluid entering the guide frame (17) falls onto the filter frame (15) through the guidance of the second baffle (42), wherein a portion of the metal debris remains in the groove (31), and another portion of the metal debris is blocked by the filter cotton (32) on the filter frame (15). The cutting fluid enters the liquid collecting frame (6) after fine filtration by the filter cotton (32) and is discharged through the liquid outlet hose (5); S3: When the filter frame (15) on the other side needs to filter, the reduction motor (4) drives the first rotating shaft (16) to swing, so that the guide column (19) in contact with the horizontal plate (40) is separated from the horizontal plate (40), and the connecting plate (22) moves downward with the U-shaped frame (21) and the filter cotton (32) under the reset force of the second spring (20), and the fourth wedge block (24) drives the first wedge block (11) to reset, and the second wedge block (13) drives the third wedge block (14) to move upward and reset, until the filter cotton (32) is soaked. In the water of the water holding frame (12), on the contrary, the guide column (19) on the other side will contact with the horizontal plate (40) and be squeezed by the horizontal plate (40), so that the third wedge block (14) descends and drives the second wedge block (13) and the first wedge block (11) to slide horizontally at the bottom of the filter frame (15), so that the second spring (20) is compressed, and the U-shaped frame (21) and the filter cotton (32) also move up to the unloading position of the filter frame (15), so that the filter cotton (32) filters the cutting fluid and blocks the passage of metal debris; S4: When the reduction motor (4) drives the filter frame (15) to rotate, it will synchronously drive the first gear (9) to rotate, thereby causing the rack (10) to rise and fall. The rise and fall of the rack (10) drives the second gear (30) and the second rotating shaft (29) to rotate, so that the paddle (28) moves the fixed plate (27), thereby causing the connecting bar (26) to drive the filter plate (35) to rise and fall. When the paddle (28) moves the fixed plate (27) and is separated from the fixed plate (27), the third spring (38) will be instantly reset next to the connecting bar (26) and the connecting rod (36), thereby causing the filter plate (35) to be instantly reset, thereby intermittently shaking off the metal debris remaining on the filter plate (35) through vibration force.

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