Metal processing wastewater filtering device

Abstract

The invention relates to the technical field of wastewater filtering, in particular to a metal processing wastewater filtering device which comprises a supporting frame, the top of the supporting frame is rotationally connected with a filtering cylinder, the filtering cylinder comprises filtering holes and a cylinder surface, the end of the filtering cylinder is provided with a cylinder cover, the cylinder cover is connected with a water receiving opening, and a hollow box is arranged above the filtering cylinder. The side wall of an inner cavity of the hollow box is slidably connected with a transverse plate, the upper end of the transverse plate is connected with a first spring, the other end of the first spring is connected with the top wall of the inner cavity of the hollow box, the bottom of the transverse plate is connected with a plurality of insertion rods, the bottom of the hollow box is provided with through holes allowing the insertion rods to penetrate through, and the diameter of the insertion rods is smaller than that of the filter holes; the inserting rod penetrates through the through hole to be connected with the barrel surface or penetrates through the through hole and the filtering holes. When the filter cartridge rotates, the insertion rod moves to the position of the filter hole, the pressure borne by the first spring disappears, the first spring resets to drive the transverse plate to descend, the insertion rod descends when the transverse plate descends, then the insertion rod penetrates through the filter hole, and impurities blocking the filter hole are ejected out to prevent blockage.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater filtration, and in particular to a wastewater filtration device for metal processing. Background Art

[0002] A large amount of water is used in the metal processing process, including water for cooling equipment, water for quenching, etc. In the process, it is inevitable that metal debris, metal oxides, etc. are mixed in the water to form wastewater, which needs to be filtered before it can be discharged.

[0003] Chinese patent CN215947046U discloses that the water filtered once is passed through a composite bioreactor membrane and a filter screen in sequence, and then the water is filtered and magnetized for a second time. However, the filter screen cannot be prevented from being blocked. When the particle impurities in the metal wastewater block the filter screen, the filter screen cannot be filtered, and replacing the filter screen with a new one will indirectly increase the filtering cost. Summary of the invention

[0004] In view of the above deficiencies in the prior art, an object of the present invention is to provide a wastewater filtering device for metal processing.

[0005] To achieve the above objectives, the technical solutions adopted are:

[0006] A wastewater filtering device for metal processing comprises a supporting frame, the top of which is rotatably connected to a filter cartridge, the filter cartridge comprising filter holes and a cartridge surface, the cartridge surface being an area of ​​the filter cartridge without filter holes, a cartridge cover being provided at the end of the filter cartridge, the cartridge cover being connected to a water inlet, a hollow box being provided above the filter cartridge, a transverse plate being slidably connected to the inner cavity side wall of the hollow box, the upper end of the transverse plate being connected to a first spring, the other end of the first spring being connected to the inner cavity top wall of the hollow box, a plurality of vertically arranged plug rods being connected to the bottom of the transverse plate, a plurality of through holes being provided at the bottom of the hollow box for the plug rods to pass through, the diameter of the plug rods being smaller than the diameter of the filter holes, the plug rods passing through the through holes to connect to the cartridge surface or passing through the through holes and the filter holes.

[0007] Furthermore, the protruding length of the insertion rod after being inserted into the filter hole does not exceed 2 mm.

[0008] The beneficial effect of adopting the above technical solution is that: the insertion rod in the initial state is located at the position of the cylinder surface and the first spring is compressed at this time. When the filter cylinder rotates to the position of the insertion rod at the filter hole, the first spring pushes the cross plate downward, thereby driving the insertion rod to descend. The insertion rod then passes through the filter hole, which can push out impurities blocking the filter hole and prevent the filter hole from being blocked. The protruding length of the insertion rod after inserting into the filter hole does not exceed 2 mm. Since the spring is flexible, as the filter cylinder continues to rotate, the spring will deform, and eventually the insertion rod will be separated from the filter hole until it contacts the cylinder surface again. The diameter of the insertion rod is smaller than the diameter of the filter hole, ensuring that the insertion rod can be inserted into the filter hole for dredging, and maintaining a certain gap between the insertion rod and the filter hole to facilitate the insertion rod to separate from the filter hole.

[0009] Furthermore, a brush is rotatably connected to the inner cavity of the hollow box, and the brush can be connected to the insertion rod.

[0010] The beneficial effect of adopting the above further technical solution is that the cooperation between the brush in the hollow box and the insertion rod can simultaneously clean the impurities attached to the surface of the insertion rod when the insertion rod moves up and down, thereby preventing the insertion rod from getting stuck.

[0011] Furthermore, the filter cartridge or cartridge cover is provided with teeth, the end of the brush extends to the outside of the hollow box and is provided with a first gear, the first gear is meshed with the teeth, and the brush is located in the circumference of the insertion rod.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that through the meshing of the first gear and the teeth of the filter cartridge, the brush and the filter cartridge are synchronously driven without the need for an additional power source. The design of the brushes on both sides of the insertion rod can expand the cleaning range and improve the cleaning effect of the insertion rod.

[0013] Furthermore, the filter holes are arranged in multiple groups, each group of filter holes is arranged along the axial direction of the filter cartridge, the number of the multiple plug rods is equal to the number of each group of filter holes, one plug rod corresponds to one filter hole, and a removable box cover is provided on one or both sides of the hollow box.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is that the filter holes are arranged axially, and with the corresponding number of plug rods, the entire row of filter holes can be cleaned, thereby improving the dredging efficiency. The removable cover of the hollow box is convenient for maintenance or replacement of internal components such as plug rods and brushes, thereby reducing maintenance costs.

[0015] Furthermore, the upper end of the hollow box is connected to a support rod, and the other end of the support rod is connected to a support frame.

[0016] The beneficial effect of adopting the above further technical solution is that the support rod is used to support the hollow box, ensure the precise alignment of the insertion rod and the filter cartridge, avoid deviation caused by vibration, enhance the stability of the hollow box, and ensure the long-term reliable operation of the insertion rod and the brush.

[0017] Furthermore, a collecting box is provided below the filter cartridge, an opening is provided on the top of the collecting box, the size of the opening is larger than the size of the filter cartridge, the collecting box is connected to a motor, a screw is rotatably connected inside the collecting box, the output end of the motor is connected to the screw, the other end of the screw is connected to a transmission assembly, and the transmission assembly is connected to the tooth transmission.

[0018] The beneficial effect of adopting the above-mentioned further technical solution is that the opening of the collection box is located directly below the filter cartridge, and the size of the opening is larger than the size of the filter cartridge, so that the filtrate from the filter cartridge can be received in a larger range, and the screw and transmission assembly are driven by a motor, and the transmission assembly is connected to the filter cartridge teeth for transmission, so that the power of the motor is transmitted to the filter cartridge and the collection box at the same time, thereby realizing the linkage control of the filter cartridge rotation and the filtrate treatment.

[0019] Furthermore, the transmission assembly includes a first pulley, a first conveyor belt, a second pulley and a second gear. The other end of the screw extends to the outside of the collection box and is connected to the first pulley. The support frame is rotatably connected to a rotating shaft and a second pulley and a second gear are respectively connected to both ends of the rotating shaft. The second gear is meshed with the teeth, and the first pulley and the second pulley are connected through the first conveyor belt.

[0020] The beneficial effect of adopting the above further technical solution is that the second gear meshes with the teeth of the filter cartridge to ensure that the rotation speed of the filter cartridge is synchronized with the transmission assembly.

[0021] Furthermore, a hollow frame is provided at the top of the inner cavity of the collection box, and a vertically arranged pressure plate is connected to the inside of the hollow frame. The screw passes through the pressure plate and is threadedly connected to the pressure plate. The rotation of the screw drives the pressure plate to slide in a horizontal direction. The hollow frame is provided with a discharge port, and the discharge port is located at the bottom of the hollow frame.

[0022] Furthermore, an electric valve is provided on one side of the hollow frame of the collection box.

[0023] The beneficial effects of taking the above two-step technical solution are: the electric valve can be opened to put the flocculant or alum into the hollow frame, and the screw can rotate forward and reverse, thereby driving the pressure plate to move back and forth. When the pressure plate moves, it compresses the flocculant and alum, and the agglomerated flocculant or alum can be crushed, so that the crushed material can be discharged from the discharge port and enter the interior of the collection box.

[0024] Furthermore, a stirring assembly is provided in the collecting box, and the stirring assembly is connected to the screw.

[0025] Furthermore, the stirring assembly includes a support plate, a first round rod, a first sprocket, a cam, a second sprocket, a chain, a second round rod, a push plate, and an extension handle. The screw rod passes through and is fixedly connected to the second sprocket. The second sprocket is connected to the first sprocket through the chain. Two support plates are provided at the bottom of the inner cavity of the collecting box. The two support plates are rotatably connected to the first round rod. The two ends of the first round rod are respectively connected to the first sprocket and the cam. The surface of the cam is circumferentially provided with closed swing ribs. The second round rod passes through the two support plates. The second round rod can rotate relative to the support plates and slide along the length direction of the second round rod. The two ends of the second round rod are respectively connected to the push plate and the extension handle, and the extension handle is provided with a notch. The swing rib is located in the notch. The extension handle is connected to a second spring, and the other end of the second spring is connected to the hollow frame.

[0026] The beneficial effect of adopting the above-mentioned further technical solution is that the rotation of the screw will drive the second sprocket to rotate and then drive the first sprocket to rotate through the chain, and then drive the first round rod and the cam to rotate. The second spring is in a compressed state, so that the cam is always in contact with the extension handle. At the same time, the swinging ribs are always in the grooves of the extension handle during the rotation of the cam, and the swinging ribs drive the extension handle to reciprocate along the axis of the second round rod, thereby driving the second round rod and the push plate to reciprocate along the axis of the second round rod, thereby achieving a stirring effect, increasing the range of stirring of the wastewater in the collection box, and allowing the granular flocculant and alum to quickly dissolve in the water to achieve secondary purification.

[0027] Furthermore, the cylinder cover is a detachable structure, and the cylinder cover is rotatably connected to the water inlet.

[0028] The beneficial effect of adopting the above further technical solution is that the detachable cartridge cover facilitates cleaning the inside of the filter cartridge or replacing the filter cartridge, thereby improving maintenance convenience.

[0029] Furthermore, a drain valve is provided on the side of the collecting box, which can discharge the purified filtrate in the collecting box.

[0030] Furthermore, the bottom end of the insertion rod is an inverted frustum structure.

[0031] Furthermore, the insertion rod is made of elastic material, such as rubber.

[0032] The beneficial effects of adopting the above two-step further technical solution are: the insertion rod is made of elastic material and the inverted frustum structure facilitates the separation of the insertion rod from the filter hole.

[0033] Furthermore, the bottom edge of the insertion rod is rounded.

[0034] Furthermore, a ball is embedded in the bottom end of the insertion rod, the bottom end of the ball protrudes from the insertion rod, and the vertical distance between the bottom end of the ball and the bottom end of the insertion rod does not exceed 2 mm.

[0035] The beneficial effects of the above two further technical solutions are: the rounded bottom edge of the rod and the ball embedded in the bottom of the rod can reduce the wear of the rod during the process of detaching from the filter hole. The rounded bottom edge of the rod also helps the rod to detach from the filter hole more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic structural diagram of the metal processing wastewater filtering device of the present invention;

[0037] Figure 2 It is a schematic diagram of the structure of the collection box of the present invention;

[0038] Figure 3 It is a schematic diagram of the internal structure of the collection box of the present invention;

[0039] Figure 4 It is a schematic diagram of the internal structure of the hollow box of the present invention;

[0040] Figure 5 For the present invention Figure 1 A in the enlarged view;

[0041] Figure 6 For the present invention Figure 4 The enlarged view of point B in the figure;

[0042] Figure 7 For the present invention Figure 3 The enlarged view of point C in the figure;

[0043] In the figure: 1, support frame; 2, filter cartridge; 3, filter hole; 4, cartridge surface; 5, teeth; 6, cartridge cover; 7, water inlet; 8, support rod; 9, hollow box; 10, cross plate; 11, first spring; 12, plug rod; 13, brush; 14, first gear; 15, collection box; 16, motor; 17, screw; 18, first pulley; 20, second pulley; 21, second gear; 22, first conveyor belt; 23, hollow frame; 24, pressure plate; 25, support plate; 26, first round rod; 27, first sprocket; 28, cam; 29, swing rib; 30, second sprocket; 31, chain; 32, second round rod; 33, push plate; 34, extension handle; 35, notch; 36, second spring; 37, opening. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to 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 only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of its embodiments based on the overall structure of the present invention.

[0046] Reference Figure 1 to Figure 7 , a metal processing wastewater filtering device comprises a supporting frame 1, the top of the supporting frame 1 is rotatably connected with a filter cartridge 2, the filter cartridge 2 comprises a filter hole 3 and a cartridge surface 4, the cartridge surface 4 is an area of ​​the filter cartridge 2 without a filter hole 3, the end of the filter cartridge 2 is provided with a cartridge cover 6, the cartridge cover 6 is connected with a water inlet 7, a hollow box 9 is provided above the filter cartridge 2, the inner cavity side wall of the hollow box 9 is slidably connected with a cross plate 10, the upper end of the cross plate 10 is connected with a first spring 11, the other end of the first spring 11 is connected to the inner cavity top wall of the hollow box 9, the bottom of the cross plate 10 is connected with a plurality of vertically arranged plug rods 12, the bottom of the hollow box 9 is provided with a plurality of through holes for the plug rods 12 to pass through, the diameter of the plug rods 12 is smaller than the diameter of the filter hole 3, the plug rods 12 pass through the through holes to connect with the cartridge surface 4 or pass through the through holes and the filter hole 3.

[0047] As a preferred embodiment, the inner cavity of the hollow box 9 is rotatably connected with a brush 13 , and the brush 13 can be connected to the insertion rod 12 .

[0048] As a preferred embodiment, the filter cartridge 2 or cartridge cover 6 is provided with teeth 5 , the end of the brush 13 extends to the outside of the hollow box 9 and is provided with a first gear 14 , the first gear 14 is meshed with the teeth 5 , and the brush 13 is located circumferentially of the insertion rod 12 .

[0049] As a preferred embodiment, the filter holes 3 are arranged in multiple groups, each group of filter holes 3 is arranged along the axial direction of the filter cartridge 2, the number of the multiple insertion rods 12 is equal to the number of each group of filter holes 3, one insertion rod 12 corresponds to one filter hole 3, and a removable box cover is provided on one side or both sides of the hollow box 9.

[0050] As a preferred embodiment, the upper end of the hollow box 9 is connected to a support rod 8 , and the other end of the support rod 8 is connected to the support frame 1 .

[0051] As a preferred embodiment, a collecting box 15 is provided below the filter cartridge 2, an opening 37 is provided on the top of the collecting box 15, the size of the opening 37 is larger than the size of the filter cartridge 2, the collecting box 15 is connected to a motor 16, the interior of the collecting box 15 is rotatably connected to a screw 17, the output end of the motor 16 is connected to the screw 17, the other end of the screw 17 is connected to a transmission assembly, and the transmission assembly is transmission-connected to the teeth 5.

[0052] As a preferred embodiment, the transmission assembly includes a first pulley 18, a first conveyor belt 22, a second pulley 20 and a second gear 21. The other end of the screw 17 extends to the outside of the collection box 15 and is connected to the first pulley 18. The top of the support frame 1 is rotatably connected to a rotating shaft and a second pulley 20 and a second gear 21 are respectively connected to both ends of the rotating shaft. The second gear 21 is meshed with the teeth 5. The first pulley 18 and the second pulley 20 are connected by a first conveyor belt 22. In this embodiment, the first conveyor belt 22 is a belt.

[0053] In this embodiment, a hollow frame 23 is provided at the top of the inner cavity of the collecting box 15, and a vertically arranged pressure plate 24 is connected to the inside of the hollow frame 23. The screw 17 passes through the pressure plate 24 and is threadedly connected to the pressure plate 24. The screw 17 drives the pressure plate 24 to slide in a horizontal direction. The hollow frame 23 is provided with a discharge port, and the discharge port is located at the bottom of the hollow frame 23.

[0054] In this embodiment, an electric valve is provided on one side of the hollow frame 23 of the collection box 15 .

[0055] As a preferred embodiment, a stirring assembly is provided in the collecting box 15 , and the stirring assembly is connected to the screw 17 .

[0056] In this embodiment, the stirring assembly includes a support plate 25, a first round rod 26, a first sprocket 27, a cam 28, a second sprocket 30, a chain 31, a second round rod 32, a push plate 33, and an extension handle 34. The screw 17 passes through and is fixedly connected to the second sprocket 30. The second sprocket 30 is connected to the first sprocket 27 through the chain 31. Two support plates 25 are provided at the bottom of the inner cavity of the collection box 15. The two support plates 25 are rotatably connected to the first round rod 26. The first round rod 26 passes through the two support plates 25. The two ends of the first round rod 26 are respectively connected to the first sprocket 27 and the cam 28. The surface of the cam 28 is circumferentially provided with closed swing ribs 29. The rib 29 is closed around the cam 28 and slowly transitions from one end of the cam 28 to the other end. A second round rod 32 is also provided on the two support plates 25 above the first round rod 26. The second round rod 32 penetrates the two support plates 25. The second round rod 32 can rotate relative to the support plates 25 and slide along the length direction of the second round rod 32. The two ends of the second round rod 32 are respectively connected to a push plate 33 and an extension handle 34, and the extension handle 34 is provided with a notch 35. The swing rib 29 is located in the notch 35 to connect the cam 28 and the extension handle 34. The extension handle 34 is connected to a second spring 36, and the other end of the second spring 36 is connected to the hollow frame 23.

[0057] In this embodiment, the cylinder cover 6 is a detachable structure, and the cylinder cover 6 is rotatably connected to the water inlet 7.

[0058] In this embodiment, a drain valve is provided on the side of the collection box 15 to discharge the purified filtrate in the collection box 15 .

[0059] As a preferred embodiment, the bottom end of the insertion rod 12 is an inverted frustum structure.

[0060] As a preferred embodiment, the insertion rod 12 is made of elastic material, such as rubber.

[0061] In this embodiment, the bottom edge of the insertion rod 12 is rounded.

[0062] In an optional embodiment, a ball is embedded in the bottom end of the insertion rod 12, the bottom end of the ball protrudes out of the insertion rod 12, and the vertical distance between the bottom end of the ball and the bottom end of the insertion rod 12 does not exceed 2 mm.

[0063] Working principle: the metal wastewater is located in the wastewater pool. The drain pipe of the wastewater pool is connected to the water inlet 7 by rotation, so that the wastewater in the wastewater pool can enter the interior of the filter cartridge 2 through the drain pipe. The starting motor 16 drives the screw 17 to rotate and then drives the first pulley 18 to rotate, and then drives the second pulley 20 to rotate through the first conveyor belt 22. The second pulley 20 drives the second gear 21 to rotate through the rotating shaft, and drives the filter cartridge 2 to rotate under the cooperation with the teeth 5. Then the wastewater passes through the filter hole 3, and the metal impurities in the wastewater remain in the filter cartridge 2. However, during use, the filter hole 3 may be blocked by metal impurities. The solution to this problem is as follows: the insertion rod 12 in the initial state abuts against the cylinder surface 4. At this time, the first spring 11 is compressed. When the filter cartridge rotates to the position where the insertion rod 12 is located at the filter hole 3, the first spring 11 is compressed. A spring 11 pushes the cross plate 10 downward, thereby driving the plunger 12 to descend, and then the plunger 12 passes through the filter hole 3, which can push out the impurities blocking the filter hole 3 to prevent clogging. As the filter cartridge 2 continues to rotate, the spring bends and deforms, and the plunger 12 tilts and moves out of the filter hole 3 to contact the cartridge surface 4 again. This process is repeated repeatedly, and each filter hole is cleaned row by row to prevent clogging. Since the first gear 14 is also meshed with the teeth 5, when the filter cartridge 2 drives the teeth 5 to rotate, it drives the first gear 14 to rotate and then drives the brush 13 to rotate. When the brush 13 rotates, it can clean the surface of the plunger 12 to clean the plunger 12, prevent the accumulation of impurities attached to the plunger 12, and cause the plunger 12 to get stuck when it passes through the filter hole 3. The cartridge cover 6 is regularly disassembled to remove the impurities in the filter cartridge 2.

[0064] The wastewater filtered once by the filter cartridge 2 will enter the collecting box 15 from the opening 37. The collecting box 15 is provided with an electric valve at the back of the hollow frame 23. Before filtering, the electric valve can be opened to put granular flocculants or alum into the hollow frame 23. The flocculants and alum are items for purifying water quality, and a discharge port is provided at the bottom of the hollow frame 23. The rotation of the motor 16 can be forward and reverse, so it can drive the screw 17 to rotate forward and reverse, and then drive the pressing plate 24 to move back and forth. When the pressing plate 24 moves, it presses the flocculants and alum, and the agglomerated flocculants or alum can be squeezed and crushed, so that the crushed flocculants and alum can leak out from the discharge port into the interior of the collecting box 15. The purpose of crushing is that the small granular flocculants and alum can quickly merge with water, shortening the time for secondary filtration of water, and the screw The rotation of 17 will drive the second sprocket 30 to rotate, and then drive the first sprocket 27 to rotate through the chain 31, and then drive the first round rod 26 and the cam 28 to rotate. When the cam 28 rotates, it will contact the extension handle 34, and then the second round rod 32 and the push plate 33 will rotate. At the same time, when the cam 28 rotates, the swing rib 29 will move at the position of the groove 35, and will drive the second round rod 32 and the push plate 33 to move back and forth. In summary, the push plate 33 can realize two movement modes: rotation and back and forth movement. Through the two movement modes, the range of stirring of the wastewater in the collection box 15 can be increased, so that the granular flocculant and alum can be quickly dissolved in the water to achieve secondary purification. The flocculant can quickly absorb tiny impurities in the wastewater, and the alum can purify the water quality. A drain valve is installed on the side of the collection box 15 to discharge the purified water in the collection box 15.

[0065] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wastewater filtration device for metal processing, comprising: A support frame (1), characterized in that a filter cartridge (2) is rotatably connected to the top of the support frame (1), the filter cartridge (2) comprises a filter hole (3) and a cartridge surface (4), a cartridge cover (6) is provided at the end of the filter cartridge (2), the cartridge cover (6) is connected to a water inlet (7), a hollow box (9) is provided above the filter cartridge (2), a transverse plate (10) is slidably connected to the inner cavity side wall of the hollow box (9), and a first spring is connected to the upper end of the transverse plate (10) (11), the other end of the first spring (11) is connected to the top wall of the inner cavity of the hollow box (9), the bottom of the horizontal plate (10) is connected to a plurality of vertically arranged plug rods (12), the bottom of the hollow box (9) is provided with a plurality of through holes for the plug rods (12) to pass through, the diameter of the plug rods (12) is smaller than the diameter of the filter hole (3), and the plug rods (12) pass through the through holes to be connected to the cylinder surface (4) or pass through the through holes and the filter hole (3).

2. A metal processing wastewater filtration device according to claim 1, characterized in that: The inner cavity of the hollow box (9) is rotatably connected to a brush (13), and the brush (13) can be connected to the insertion rod (12).

3. The metal processing wastewater filtration device according to claim 2, characterized in that: The filter cartridge (2) or cartridge cover (6) is provided with teeth (5), the end of the brush (13) extends to the outside of the hollow box (9) and is provided with a first gear (14), the first gear (14) is meshed with the teeth (5), and the brush (13) is located in the circumferential direction of the insertion rod (12).

4. The metal processing wastewater filtration device according to claim 3, characterized in that: The filter holes (3) are arranged in a plurality of groups, each group of filter holes (3) is arranged along the axial direction of the filter cartridge (2), the number of the plurality of insertion rods (12) is equal to the number of each group of filter holes (3), one insertion rod (12) corresponds to one filter hole (3), and a detachable box cover is provided on one or both sides of the hollow box (9).

5. The metal processing wastewater filtration device according to claim 3, characterized in that: The upper end of the hollow box (9) is connected to a support rod (8), and the other end of the support rod (8) is connected to the support frame (1).

6. A metal processing wastewater filtration device according to claim 5, characterized in that: A collecting box (15) is provided below the filter cartridge (2), an opening (37) is provided at the top of the collecting box (15), the collecting box (15) is connected to a motor (16), a screw (17) is rotatably connected inside the collecting box (15), an output end of the motor (16) is connected to the screw (17), the other end of the screw (17) is connected to a transmission assembly, and the transmission assembly is transmission-connected to the teeth (5).

7. The metal processing wastewater filtration device according to claim 6, characterized in that: The transmission assembly comprises a first pulley (18), a first conveyor belt (22), a second pulley (20) and a second gear (21); the other end of the screw rod (17) extends to the outside of the collection box (15) and is connected to the first pulley (18); the support frame (1) is rotatably connected to a rotating shaft and the second pulley (20) and the second gear (21) are respectively connected to the two ends of the rotating shaft; the second gear (21) is meshed with the teeth (5); the first pulley (18) and the second pulley (20) are connected via the first conveyor belt (22).

8. The metal processing wastewater filtration device according to claim 6, characterized in that: A hollow frame (23) is provided at the top of the inner cavity of the collecting box (15), and a vertically arranged pressing plate (24) is connected to the interior of the hollow frame (23). The screw (17) passes through the pressing plate (24) and is threadedly connected to the pressing plate (24). The screw (17) drives the pressing plate (24) to slide in a horizontal direction, and the hollow frame (23) is provided with a discharge port.

9. A metal processing wastewater filtration device according to claim 6, characterized in that: A stirring assembly is provided in the collecting box (15), and the stirring assembly is connected to the screw (17).

10. A metal processing wastewater filtration device according to claim 9, characterized in that: The stirring assembly comprises a support plate (25), a first round rod (26), a first sprocket (27), a cam (28), a second sprocket (30), a chain (31), a second round rod (32), a push plate (33), and an extension handle (34); the screw rod (17) passes through and is fixedly connected to the second sprocket (30); the second sprocket (30) is connected to the first sprocket (27) via the chain (31); two support plates (25) are provided at the bottom of the inner cavity of the collection box (15); the two support plates (25) are rotatably connected to the first round rod (26); the two ends of the first round rod (26) are respectively connected to the first sprocket (27) and the cam (2 8), a closed swing rib (29) is circumferentially arranged on the surface of the cam (28), the second round rod (32) passes through the two support plates (25), the second round rod (32) can rotate relative to the support plates (25) and slide along the length direction of the second round rod (32), the two ends of the second round rod (32) are respectively connected to a push plate (33) and an extension handle (34), and the extension handle (34) is provided with a notch (35), the swing rib (29) is located in the notch (35), the extension handle (34) is connected to a second spring (36), and the other end of the second spring (36) is connected to the hollow frame (23).

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