Multi-stage filtering equipment and filtering method for metal chippings

Abstract

The invention relates to the field of metal scrap filtering, in particular to metal scrap multi-stage filtering equipment and a filtering method.The metal scrap multi-stage filtering equipment comprises a filtering box, a gear motor is fixedly installed on the outer surface of the filtering box, a first rotating shaft is fixed to the output end of the gear motor, and the first rotating shaft penetrates through the filtering box and is rotationally connected into the filtering box; and a first baffle is fixed to the outer surface of the first rotating shaft, a guide frame is fixed in the filtering box, and the bottom of the guide frame is in an arc shape. A gear motor drives a first baffle to intermittently swing left and right, so that cutting fluid in a guide frame periodically flows into filtering frames on the left side and the right side through a second baffle which intermittently swings, circulating relay filtering of the two filtering frames is achieved, filtering cotton which is not filtered can be soaked in a water containing frame, and the filtering effect is improved. And the metal scraps on the water containing frame escape into water in the water containing frame, so that the filter cotton can be periodically and automatically cleaned, shutdown operation is not needed, and the production efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of metal debris filtering, and in particular to a metal debris multi-stage filtering device and a filtering method. Background Art

[0002] In the process of machining various workpieces, machine tool machining centers will generate a lot of metal flying chips, and the metal flying chips are of different sizes and shapes. The workpieces and tools need to be flushed with cutting fluid to cool the tools and workpieces and flush away the metal debris generated in the machining process. The metal debris will be discharged with the cutting fluid, and the used cutting fluid can be recycled after treatment.

[0003] In order to ensure the treatment effect of cutting fluid, a common method is to filter the debris in the cutting fluid. The common way is to use filters with different mesh sizes for layer-by-layer filtering. The debris is very easy to get stuck on the sieve with smaller meshes, and the filter needs to be frequently stopped to disassemble and clean to prevent the filter from being blocked, which is troublesome and has low production efficiency.

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

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a multi-stage filtering device and filtering method for metal debris, so as to solve the problem that when filtering layer by layer using filter screens of different mesh sizes, the debris is very easy to get stuck on the sieve screen with smaller mesh holes, and the filter screen needs to be frequently stopped to disassemble and clean to prevent the filter screen from being blocked, which is troublesome and has low production efficiency.

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

[0007] A multi-stage filtering device for metal debris comprises a filter box, a reduction motor is fixedly mounted on the outer surface of the filter box, a first rotating shaft is fixed to the output end of the reduction motor, the first rotating shaft passes through the filter box and is rotatably connected to the inside of the filter box, a first baffle is fixed to the outer surface of the first rotating shaft, a guide frame is fixed to the inside of the filter box, the bottom of the guide frame is arc-shaped, and the top of the first baffle is in contact with the arc-shaped bottom of the guide frame, a feed opening is provided at the bottom of the guide frame, a second baffle is fixed to the top of the first baffle, and the second baffle is rotatably arranged inside the feed opening and adapted to the feed opening, and filter frames are fixed to opposite sides of the first baffle.

[0008] Preferably, a vertically arranged fixing column is fixed at the bottom of the filter frame, a connecting plate is vertically slid on the fixing column, a second spring is sleeved on the outside of the fixing column, and two ends of the second spring are respectively connected to the filter frame and the connecting plate, a U-shaped frame is fixed at one end of the connecting plate, 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 holding frame is placed at the bottom of the filter box, a slide rail is provided in the horizontal direction of the bottom of the filter frame, a moving block is slid inside the slide rail, a first wedge block is fixed on the moving block, a fourth wedge block is fixedly connected to one end of the connecting plate away from the U-shaped frame, and the fourth wedge block is slidably adapted to the first wedge block, guide columns are vertically slidably provided on the front and rear sides of the filter frame, a third wedge block is fixed at the bottom of the guide column, a round rod is fixed on the first wedge block, second wedge blocks are respectively fixed at both ends of the round rod, and the second wedge block is slidably adapted to the third wedge block, a horizontal plate is horizontally fixed inside the filter box, and 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 fixed inside the filter box from top to bottom, and filter plates are arranged obliquely inside the mounting frames. A slide groove is provided on the inner wall of the mounting frame, and a slider is fixed at the corresponding position of the filter plate. The filter plate slides inside the mounting frame through the slider and the slide groove, and the aperture of the filter plate gradually decreases from top to bottom. Guide grooves are provided on both sides of the mounting frame, and the guide frame is located below the lowest mounting frame for conveying cutting fluid preliminarily filtered by the filter plate.

[0010] Preferably, a linkage mechanism is provided inside the filter box, the linkage mechanism includes a rack, a sliding block is fixed on the rack, and a vertical sliding groove is opened on the inner wall of the filter box, and the rack slides up and down inside the filter box through the sliding block and the sliding groove, and a first gear is fixed to the front and rear ends of the first rotating shaft, and a second rotating shaft is rotated on the front and rear sides of the mounting frame, and the second rotating shaft is fixed on the second rotating shaft, and the teeth on the rack are respectively adapted to mesh with the first gear and the second gear, and a paddle is fixed on the second rotating shaft, and connecting strips are provided on the front and rear sides of the mounting frame, and connecting rods are fixed on both ends of the connecting strip, and one end of the connecting rod is fixedly connected to the filter plate, and the other end of the connecting rod slides on the mounting frame, and a third spring is sleeved on the outside of the connecting rod, and the two ends of the third spring are respectively connected to the connecting strip and the mounting frame, and a fixing plate is fixed on the connecting strip, and the paddle and the fixing plate are close to each other.

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

[0012] Preferably, a switch door is provided on the side of the filter box, and the water frame is moved out of the filter box through the switch door.

[0013] Preferably, the upper surface of the filter frame is in a step shape, and a groove is provided at the junction of each step.

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

[0015] A filtering method of a metal debris multi-stage filtering device comprises the following steps:

[0016] S1: The cutting fluid enters the filter box through the liquid inlet pipe, and after being filtered by the filter plate, the initially filtered cutting fluid enters the next filter plate through the holes on the filter plate until it enters the guide frame. The blocked metal debris rolls through the filter plate and falls into the water frame at the bottom of the filter box;

[0017] S2: The cutting fluid entering the guide frame falls onto the filter frame through the guidance of the second baffle, wherein a part of the metal debris stays in the groove, and the other part of the metal debris is blocked by the filter cotton on the filter frame. The cutting fluid enters the liquid collecting frame after fine filtration by the filter cotton and is discharged through the liquid outlet hose;

[0018] S3: When the filter frame on the other side needs to filter, the reduction motor drives the first rotating shaft to swing, so that the guide column in contact with the horizontal plate is separated from the horizontal plate, and the connection plate moves down with the U-shaped frame and the filter cotton under the reset force of the second spring, and the fourth wedge block drives the first wedge block to reset, and the second wedge block drives the third wedge block to move up and reset until the filter cotton is immersed in the water of the water frame. On the contrary, the guide column on the other side will contact the horizontal plate and be squeezed by the horizontal plate, so that the third wedge block will descend and drive the second wedge block and the first wedge block to slide horizontally at the bottom of the filter frame, so that the second spring is compressed, and the U-shaped frame and the filter cotton are also moved up to the unloading position of the filter frame, so that the filter cotton filters the cutting fluid and blocks the passage of metal debris;

[0019] S4: When the reduction motor drives the filter frame to rotate, it will synchronously drive the first gear to rotate, so that the rack is lifted and lowered, and the lifting of the rack drives the second gear and the second shaft to rotate, so that the paddle moves the fixed plate, so that the connecting bar drives the filter plate to lift and lower. When the paddle moves the fixed plate and disengages from the fixed plate, the third spring will instantly reset next to the connecting bar and the connecting rod, so that the filter plate is instantly reset, thereby intermittently shaking off the metal debris remaining on the filter plate through vibration force.

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

[0021] 1. The present invention drives the first baffle plate to intermittently swing left and right through a reduction motor, so that the cutting fluid in the guide frame periodically flows into the filter frames on the left and right sides through the intermittently swinging second baffle plate, so as to realize cyclic relay filtration of the two filter frames, and 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, so that the filter cotton can be automatically cleaned periodically without stopping the operation, and the production efficiency is high.

[0022] 2. In the present invention, when the filter frame on the other side needs to be filtered, the first rotating shaft is driven to swing by the reduction motor, so that the guide column in contact with the horizontal plate is separated from the horizontal plate, and the connecting plate moves downward with the U-shaped frame and the filter cotton under the reset force of the second spring, and the fourth wedge block drives the first wedge block to reset, and the second wedge block drives the third wedge block to move up and reset until the filter cotton is soaked in the water in the water frame. At this time, the top of the filter cotton moves to the bottom of the filter frame, and the filter cotton no longer blocks the debris, so that the debris on the filter frame can slide into the water better.

[0023] 3. The present invention adopts the coordinated design of the rack, the first gear, the second gear, the paddle, the fixed plate, the connecting strip, the paddle and the connecting rod. Whenever the first rotating shaft swings the filter frame, the first gear is synchronously driven to rotate, so that the rack is lifted and lowered. The lifting of the rack drives the second gear and the second rotating shaft to rotate, so that the paddle paddles the fixed plate, so that the connecting strip drives the filter plate to lift and lower. When the paddle paddles the fixed plate and disengages from the fixed plate, the third spring will instantly reset next to the connecting strip and the connecting rod, so that the filter plate is instantly reset, so that the metal debris remaining on the filter plate is intermittently shaken off by the vibration force, and the filtering effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 This is the first cross-sectional view of the present invention.

[0026] Figure 3 For the present invention Figure 2 A magnified view of the structure in the middle.

[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 For the present invention Figure 5 Schematic diagram of the enlarged view of the structure at B in the middle.

[0030] Figure 7 It 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] Fig. 9 It is a schematic diagram of the interior of the guide 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 collecting frame; 7, first spring; 8, guide 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, guide frame; 18, first baffle; 19, guide column; 20, second spring; 21, U Frame; 22, connecting plate; 23, fixing column; 24, fourth wedge block; 25, mounting frame; 26, connecting strip; 27, fixing plate; 28, paddle; 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, guide groove; 38, third spring; 39, discharge port; 40, horizontal plate; 41, round rod; 42, second baffle. DETAILED DESCRIPTION

[0034] The following will describe various embodiments of the present invention in detail with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles 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 Figure 1-9As shown, it includes a filter box 1, and a plurality of inclined mounting frames 25 are fixed inside the filter box 1 from top to bottom, and filter plates 35 are arranged obliquely inside the mounting frames 25. The aperture of the filter plates 35 gradually decreases from top to bottom, and multi-stage filtering can be performed. The inner top wall of the filter box 1 is connected with a liquid inlet pipe 2, and the liquid inlet pipe 2 is located in the middle position above the filter plate 35. Guide grooves 37 are provided on both sides of the mounting frame 25. A guide frame 17 is fixed inside the filter box 1, and the guide frame 17 is located below the lowest mounting frame 25 for conveying cutting fluid preliminarily filtered by the filter plate 35. Through the inclined filter plate 35, the cutting fluid flowing down from the liquid inlet pipe 2 is filtered by the filter plate 35, and the cutting fluid falls into the guide frame 17, while metal debris slides down from the lower side of the mounting frame 25 through the guide groove 37.

[0036] The bottom of the guide frame 17 is set in an arc shape, and 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, and 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, and the top of the first baffle 18 is in contact with the arc-shaped bottom of the guide frame 17. The first baffle 18 always fits the inner wall of the guide frame 17 when swinging. A discharge port 39 is opened at the bottom of the guide frame 17, and a second baffle 42 is fixed to the top of the first baffle 18. The top of the second baffle 42 is against the inner wall of the guide frame 17, and the second baffle 42 is rotatably set inside the discharge port 39 and adapted to the discharge port 39. The filter frame 15 is fixed on both sides of the first baffle 18, and the second baffle 18 is relatively set. The front and rear sides of 42 are in contact with the front and rear side walls of the discharge port 39, and the reduction motor 4 drives the first baffle 18 to swing intermittently left and right, 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 that is filtering is in a horizontal state, and the filter frame 15 that is not filtering is tilted downward, so that the debris accumulated on the filter frame 15 can be poured down. 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 in 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 in the guide frame 17 passes through the filter frame 15 and is filtered.

[0037] The upper surface of the filter frame 15 is stepped, and a groove 31 is provided at the junction of each step. The provided groove 31 can retain the debris in the cutting fluid in the groove 31. A vertically provided fixing column 23 is fixed to the bottom of the filter frame 15. A connecting plate 22 slides vertically on the fixing column 23. A second spring 20 is sleeved on the outside of the fixing column 23, and the 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 to 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 one 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, and clean water is arranged inside the water holding frame 12. Through the circulation filtration of the two filter frames 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 of the water holding frame 12, so that the filter cotton 32 can be automatically cleaned periodically without stopping the operation, and the production efficiency is high. A switch door 3 is opened on the side of the filter box 1, and the water holding frame 12 is moved out of the interior of the filter box 1 through the switch door 3.

[0038] 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 provided inside the slide rail 34, and a first wedge block 11 is fixed to the moving block 33. A fourth wedge block 24 is fixedly connected to the end of the connecting plate 22 away from the U-shaped frame 21, and the fourth wedge block 24 is slidably adapted to the first wedge block 11. Guide columns 19 are vertically slidably provided on the front and rear sides of the filter frame 15, and a third wedge block 14 is fixed to the bottom of the guide column 19. A round rod 41 is fixed to the first wedge block 11, and the round rod The second wedge block 13 is fixed at both ends of 41, and the second wedge block 13 is slidably adapted to the third wedge block 14. A horizontal plate 40 is fixed horizontally inside the filter box 1, and one of the guide columns 19 is in contact with the bottom surface of the horizontal plate 40. The filter frame 15 being filtered is in a horizontal state, and 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 unloading position of the filter frame 15. When the filter frame 15 on the other side 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 reset force of the second spring 20, the connecting plate 22 moves down with the U-shaped frame 21 and the filter cotton 32, 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 holding frame 12. At this time, the top of the filter cotton 32 moves to the bottom of the filter frame 15, and the filter cotton 32 no longer filters the debris. 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 will descend and drive 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.

[0039] Liquid collecting frames 6 are arranged on both sides inside the filter box 1, and the openings of the two liquid collecting frames 6 face the U-shaped frame 21, and the part of the U-shaped frame 21 in the filtering state is located inside the liquid collecting frame 6, and 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 a bevel, which is convenient for entering or moving out of the liquid collecting frame 6 when the U-shaped frame 21 is turned over. 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, and a first spring is arranged outside the guide rod 8 7, 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. When the U-shaped frame 21 swings, the U-shaped frame 21 contacts the hypotenuse of the liquid collecting frame 6, so that the liquid collecting frame 6 slides horizontally under the guidance of the hypotenuse and the guide rod 8, so that the liquid collecting frame 6 avoids the swinging path of the U-shaped frame 21. After the U-shaped frame 21 swings, the liquid collecting frame 6 is reset by the first spring 7, and the inner bottom wall of the liquid collecting frame 6 is connected to the 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 the external collection device through the 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 solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand 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); filter frames (15) are fixedly arranged opposite to each other on both sides of the first baffle (18).

2. The metal debris multi-stage filtering device according to claim 1, characterized in that: A vertically arranged fixing column (23) is fixed at the bottom of the filter frame (15), a connecting plate (22) is vertically slidably disposed 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), 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 disposed 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).

3. The metal debris multi-stage filtering device according to claim 2, characterized in that: 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 a 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) and is used to convey the cutting fluid preliminarily filtered by the filter plate (35).

4. The metal debris multi-stage filtering device according to claim 3, characterized in that: A linkage mechanism is provided 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); connecting strips (26) are provided on both the front and rear sides of the mounting frame (25); connecting rods (36) are fixed to both ends of the connecting strip (26); one end of the connecting rod (36) is fixedly connected to the filter plate (35); the other end of the connecting rod (36) slides on the mounting frame (25); a third spring (38) is sleeved on the outside of the connecting rod (36); and both ends of the third spring (38) are respectively connected to the connecting strip (26) and the mounting 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.

5. The metal debris multi-stage filtering device according to claim 4, 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.

6. The metal debris multi-stage filtering device according to claim 5, 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).

7. The metal debris multi-stage filtering device according to claim 6, 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.

8. The metal debris multi-stage filtering device according to claim 7, 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).

9. A filtering method using the metal debris multi-stage filtering device according to claim 8, characterized in that: The following steps are involved: S1: The cutting fluid enters the filter box (1) through the liquid inlet pipe (2), is filtered by the filter plate (35), and 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) is guided by the second baffle (42) and falls onto the filter frame (15), 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 is finely filtered by the filter cotton (32) and then enters the liquid collecting frame (6) 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 move up and down. The lifting 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 move up and down. 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 metal debris remaining on the filter plate (35) through vibration force.

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