A wastewater filtering device for metal processing

Abstract

The application relates to the technical field of wastewater filtering, in particular to a wastewater filtering device for metal processing, which comprises a supporting frame, a filtering cylinder rotatably connected to the top of the supporting frame, a filter hole and a cylinder surface of the filtering cylinder, a cylinder cover arranged at the end of the filtering cylinder, a water inlet connected to the cylinder cover, a hollow box arranged above the filtering cylinder, a horizontal plate slidably connected to the inner cavity side wall of the hollow box, a first spring connected to the upper end of the horizontal plate, the other end of the first spring being connected to the inner cavity top wall of the hollow box, a plurality of insertion rods connected to the bottom of the horizontal plate, a through hole arranged at the bottom of the hollow box and used for allowing the insertion rods to pass through, the diameter of the insertion rods being smaller than that of the filter hole, and the insertion rods being connected to the cylinder surface by penetrating through the through hole or penetrating through the through hole and the filter hole. When the filtering cylinder rotates, the insertion rods move to the position of the filter hole, at this moment, the pressure on the first spring disappears, so the first spring resets and drives the horizontal plate to descend, the insertion rods descend when the horizontal plate descends, and then the insertion rods penetrate through the filter hole and push out the impurities blocking the filter hole, so as to prevent the filter hole from being blocked.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater filtration, in particular to a wastewater filtration device for metal processing. BACKGROUND

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

[0003] Chinese patent CN215947046U discloses that the once-filtered water is sequentially subjected to a composite biological reaction membrane and a filter screen for second filtration and magnetization. However, the filter screen cannot be prevented from being blocked. When the particulate impurities in the metal wastewater block the filter screen, the filter screen cannot achieve filtration, and replacement of the new filter screen will indirectly increase the filtration cost. SUMMARY

[0004] In view of the above deficiencies of the prior art, the present application aims to provide a wastewater filtration device for metal processing.

[0005] To achieve the above object, the technical solution adopted is:

[0006] A wastewater filtration device for metal processing, comprising a support frame, a filter cylinder rotatably connected to the top of the support frame, the filter cylinder comprising filter holes and a cylinder surface, the cylinder surface being the filter hole-free area of the filter cylinder, an end of the filter cylinder being provided with a cylinder cover, the cylinder cover being connected to a water inlet, a hollow box being provided above the filter cylinder, a horizontal plate being slidably connected to the inner cavity side wall of the hollow box, a first spring being connected to the upper end of the horizontal plate, the other end of the first spring being connected to the inner cavity top wall of the hollow box, a plurality of vertically arranged insertion rods being connected to the bottom of the horizontal plate, a plurality of through holes being provided in the bottom of the hollow box for the insertion rods to pass through, the diameter of the insertion rods being smaller than the diameter of the filter holes, the insertion rods being connected to the cylinder surface by passing through the through holes or the through holes and the filter holes.

[0007] Further, the length of the insertion rods protruding after being inserted into the filter holes is not more than 2mm.

[0008] The beneficial effects of the above technical solutions are that: the insertion rod is located at the position of the cylinder surface in the initial state, and the first spring is compressed at this time; when the filter cartridge is rotated to the position where the insertion rod is located at the filter hole, the first spring pushes the horizontal plate to move downward, thereby driving the insertion rod to descend, and then the insertion rod penetrates through the filter hole, which can push out the impurities blocking the filter hole, preventing the filter hole from being blocked; the protruding length of the insertion rod after being inserted into the filter hole is not more than 2mm; since the spring is flexible, the spring will deform as the filter cartridge continues to rotate, and finally the insertion rod is separated from the filter hole until it is in contact with the cylinder surface again; and the diameter of the insertion rod is smaller than the diameter of the filter hole, which ensures that the insertion rod can be inserted into the filter hole for dredging, and a certain gap is maintained between the insertion rod and the filter hole, which facilitates the separation of the insertion rod from the filter hole.

[0009] Further, the inner cavity of the hollow box is rotationally connected with a brush, and the brush can be connected with the insertion rod.

[0010] The beneficial effects of the above further technical solutions are that: the cooperation of the brush in the hollow box and the insertion rod can clean the impurities attached to the surface of the insertion rod when the insertion rod moves up and down, preventing the insertion rod from being stuck.

[0011] Further, the filter cartridge or the 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 engaged with the teeth, and the brush is located in the circumferential direction of the insertion rod.

[0012] The beneficial effects of the above further technical solutions are that: through the engagement of the first gear and the filter cartridge teeth, the synchronous driving of the brush and the filter cartridge is realized, without the need for an additional power source, and the design of the brush located on both sides of the insertion rod can expand the cleaning range and improve the cleaning effect of the insertion rod.

[0013] Further, 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 insertion rods is equal to the number of each group of filter holes, one insertion rod corresponds to one filter hole, and one side or both sides of the hollow box are provided with a detachable box cover.

[0014] The beneficial effects of the above further technical solutions are that: the filter holes are arranged in the axial direction and cooperate with the corresponding number of insertion rods to realize the cleaning of the entire row of filter holes, improve the dredging efficiency, and the detachable box cover of the hollow box facilitates the maintenance or replacement of internal components such as the insertion rod and the brush, thereby reducing the maintenance cost.

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

[0016] The beneficial effects of the above further technical solutions are that: the support rod is used to support the hollow box, ensuring the precise alignment of the insertion rod and the filter cartridge, avoiding the deviation caused by vibration, enhancing the stability of the hollow box, and guaranteeing the long-term reliable operation of the insertion rod and the brush.

[0017] Further, the lower part of the filter cartridge is provided with a collecting box, an opening is formed in 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 with a motor, a screw rod is rotatably connected in the inside of the collecting box, the output end of the motor is connected with the screw rod, the other end of the screw rod is connected with a transmission assembly, and the transmission assembly is in transmission connection with the teeth.

[0018] The beneficial effects of adopting the above further technical solutions are that the opening of the collecting box is located directly below the filter cartridge, the size of the opening is larger than the size of the filter cartridge, the opening can receive the filtrate from the filter cartridge in a larger range, the motor drives the screw rod and the transmission assembly, the transmission assembly is in transmission connection with the teeth of the filter cartridge, the power of the motor is transmitted to the filter cartridge and the collecting box at the same time, and linkage control of the rotation of the filter cartridge and the treatment of the filtrate is realized.

[0019] Further, the transmission assembly comprises a first pulley, a first transmission belt, a second pulley and a second gear, the other end of the screw rod extends to the outside of the collecting box and is connected with the first pulley, the support frame is rotatably connected with a rotating shaft, and the second pulley and the second gear are respectively connected at the two ends of the rotating shaft, the second gear is in meshing with the teeth, and the first pulley and the second pulley are connected through the first transmission belt.

[0020] The beneficial effects of adopting the above further technical solutions are that the second gear is in meshing with the teeth of the filter cartridge, so that the rotation speed of the filter cartridge is synchronized with the transmission assembly.

[0021] Further, a hollow frame is arranged at the top of the inner cavity of the collecting box, a vertical pressing plate is connected in the inside of the hollow frame, the screw rod penetrates through the pressing plate and is in threaded connection with the pressing plate, the screw rod rotates to drive the pressing plate to slide in the horizontal direction, and the hollow frame is provided with a discharge port, which is located at the bottom of the hollow frame.

[0022] Further, an electric valve is arranged on one side of the hollow frame of the collecting box.

[0023] The beneficial effects of adopting the above two-step further technical solutions are that the electric valve can be opened to put the flocculating agent or alum into the hollow frame, the screw rod rotates forward and reversely, and then drives the pressing plate to move back and forth, the flocculating agent and the alum are pressed when the pressing plate moves, the caked flocculating agent or alum can be crushed, the crushed material can be discharged from the discharge port and into the inside of the collecting box.

[0024] Further, an agitating assembly is arranged in the collecting box and is connected with the screw rod.

[0025] Further, the stirring assembly comprises a support plate, a first round rod, a first chain wheel, a cam, a second chain wheel, a chain, a second round rod, a push plate, and an extension handle, the screw rod penetrates through and is fixedly connected to the second chain wheel, the second chain wheel is connected to the first chain wheel through the chain, the bottom of the inner cavity of the collecting box is provided with two support plates, the two support plates are rotationally connected to the first round rod, the two ends of the first round rod are respectively connected to the first chain wheel and the cam, the surface of the cam is circumferentially provided with closed swing ribs, the second round rod penetrates through the two support plates, the second round rod can rotate relative to the support plate 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 ribs are 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 effects of adopting the above further technical solutions are that: the rotation of the screw rod drives the rotation of the second chain wheel, then drives the rotation of the first chain wheel through the chain, and then drives the rotation of the first round rod and the cam, the second spring is in a compressed state, so that the cam and the extension handle are always in contact, at the same time, the swing ribs are always in the notch of the extension handle in the process of rotating, and the swing ribs drive the extension handle to make reciprocating movement along the axial direction of the second round rod, and then drive the second round rod and the push plate to make reciprocating movement along the axial direction of the second round rod, so as to realize the stirring effect, improve the range of stirring the wastewater in the collecting box, and make the particle flocculant and alum quickly dissolve in water to realize secondary purification.

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

[0028] The beneficial effects of adopting the above further technical solutions are that: the detachable cylinder cover facilitates the cleaning of the inside of the filter cylinder or the replacement of the filter cylinder, and improves the convenience of maintenance.

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

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

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

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

[0033] Further, the bottom end edge of the insertion rod is smoothly arranged.

[0034] Further, the bottom end of the insertion rod is embedded with a ball, 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 is not more than 2 mm.

[0035] The beneficial effects of adopting the above two-step further technical solution are that the bottom end edge of the insertion rod is roundly arranged and the bottom end of the insertion rod is embedded with a ball, which can reduce the wear of the insertion rod during the process of separating from the filter hole, and the round arrangement of the bottom end edge of the insertion rod is also beneficial to the more smooth separation of the insertion rod from the filter hole. BRIEF DESCRIPTION OF DRAWINGS

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

[0037] Figure 2 It is a structural schematic diagram of the collecting box of the application;

[0038] Figure 3 It is a structural schematic diagram of the inside of the collecting box of the application;

[0039] Figure 4 It is a structural schematic diagram of the inside of the hollow box of the application;

[0040] Figure 5 It is an enlarged view of A in the application; Figure 1

[0041] Figure 6 It is an enlarged view of B in the application; Figure 4

[0042] Figure 7 It is an enlarged view of C in the application; Figure 3

[0043] In the figure: 1, support frame; 2, filter cylinder; 3, filter hole; 4, cylinder surface; 5, tooth; 6, cylinder cover; 7, water inlet; 8, support rod; 9, hollow box; 10, cross plate; 11, first spring; 12, insertion rod; 13, brush; 14, first gear; 15, collecting box; 16, motor; 17, screw rod; 18, first pulley; 20, second pulley; 21, second gear; 22, first conveyor belt; 23, hollow frame; 24, pressing 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 technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.​​​

[0045] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "providing" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances, and the embodiments thereof will be described below according to the overall structure of the present application.

[0046] With reference to Figures 1-7 A kind of metal processing wastewater filtering device, including support frame 1, the top of the support frame 1 is rotatably connected with filter cylinder 2, the filter cylinder 2 includes filter hole 3 and cylinder face 4, the cylinder face 4 is the filter hole 3 area of filter cylinder 2, the end of the filter cylinder 2 is equipped with cylinder cover 6, the cylinder cover 6 is connected with water inlet 7, the top of the filter cylinder 2 is equipped with hollow box 9, the inner cavity side wall of the hollow box 9 is slidably connected with horizontal plate 10, the upper end of the horizontal plate 10 is connected with first spring 11, the other end of the first spring 11 is connected with the inner cavity top wall of the hollow box 9, the bottom of the horizontal plate 10 is connected with multiple vertically arranged insertion rods 12, the bottom of the hollow box 9 is equipped with multiple through holes for the insertion rod 12 to pass through, the diameter of the insertion rod 12 is less than the diameter of the filter hole 3, the insertion rod 12 is connected with cylinder face 4 by passing through the through hole or passes through the through hole and filter hole 3.

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

[0048] As a preferred embodiment, the filter cylinder 2 or the cylinder cover 6 is provided with a tooth 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 engaged with the tooth 5, and the brush 13 is located in the circumferential direction 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 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 one side or both sides of the hollow box 9 is provided with a detachable box cover.

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

[0051] As a preferred embodiment, the lower part of the filter cartridge 2 is provided with a collection box 15, the top of the collection box 15 is provided with an opening 37, the size of the opening 37 is larger than the size of the filter cartridge 2, the collection box 15 is connected with a motor 16, the inside of the collection box 15 is rotatably connected with a screw rod 17, the output end of the motor 16 is connected with the screw rod 17, the other end of the screw rod 17 is connected with a transmission assembly, and the transmission assembly is in transmission connection with the teeth 5.

[0052] As a preferred embodiment, the transmission assembly includes a first pulley 18, a first transmission 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 with the first pulley 18, the top of the support frame 1 is rotatably connected with a rotating shaft, and the two ends of the rotating shaft are respectively connected with the second pulley 20 and the second gear 21, the second gear 21 is in meshing connection with the teeth 5, and the first pulley 18 and the second pulley 20 are connected through the first transmission belt 22. In this embodiment, the first transmission belt 22 is a belt.

[0053] In this embodiment, the top of the inner cavity of the collection box 15 is provided with a hollow frame 23, the inside of the hollow frame 23 is connected with a vertically arranged pressing plate 24, the screw rod 17 penetrates through the pressing plate 24 and is in threaded connection with the pressing plate 24, the screw rod 17 drives the pressing plate 24 to slide in the horizontal direction, and the hollow frame 23 is provided with a discharge port, which is located at the bottom of the hollow frame 23.

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

[0055] As a preferred embodiment, the collection box 15 is provided with an agitating assembly, and the agitating assembly is connected with the screw rod 17.

[0056] In the embodiment, 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, an extension handle 34, the screw rod 17 penetrates and is fixedly connected to the second sprocket 30, the second sprocket 30 is connected to the first sprocket 27 through the chain 31, the bottom of the inner cavity of the collecting tank 15 is provided with two support plates 25, the two support plates 25 are rotationally connected to the first round rod 26, the first round rod 26 penetrates 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 a closed swing rib 29, the swing rib 29 is closed around the cam 28, and slowly transitions from one end of the cam 28 to the other end, the second round rod 32 is further provided above the first round rod 26 on the two support plates 25, the second round rod 32 penetrates the two support plates 25, the second round rod 32 can rotate relative to the support plate 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 with the push plate 33 and the 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 with a second spring 36, the other end of the second spring 36 is connected with the hollow frame 23.

[0057] In the embodiment, the barrel cover 6 is a detachable structure, and the barrel cover 6 is rotationally connected with the water inlet 7.

[0058] In the embodiment, the side edge of the collecting tank 15 is provided with a drain valve, which can discharge the filtrate purified in the collecting tank 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 the embodiment, the bottom end edge of the insertion rod 12 is smoothly arranged.

[0062] In an optional embodiment, the bottom end of the insertion rod 12 is embedded with a ball, the bottom end of the ball protrudes from the insertion rod 12, and the vertical distance between the bottom end of the ball and the bottom end of the insertion rod 12 is not more than 2 mm.

[0063] Working principle: metal wastewater is located in the wastewater pool, the drain pipe of wastewater pool is rotatably connected with the water inlet 7, so that the wastewater in the wastewater pool can enter into the inside of the filter cylinder 2 through the drain pipe, the motor 16 drives the screw rod 17 to rotate and then drives the first pulley 18 to rotate, then the second pulley 20 is driven to rotate through the first conveyor belt 22, the second pulley 20 drives the second gear 21 to rotate through the rotating shaft, and the filter cylinder 2 is driven to rotate under the cooperation of the gear teeth 5, then the wastewater passes through the filter hole 3, and the metal impurities in the wastewater are left in the inside of the filter cylinder 2, but the metal impurities may block the filter hole 3 in the process of use, and the solution is as follows: the insertion rod 12 abuts against the cylinder surface 4 in the initial state, at this time, the first spring 11 is compressed, when the filter cylinder is rotated to the position that the insertion rod 12 is located in the filter hole 3, the first spring 11 drives the horizontal plate 10 to move downwards, and then the insertion rod 12 is driven to descend, then the insertion rod 12 penetrates through the filter hole 3, can push out the impurities blocking the filter hole 3 to prevent the blockage, with the continuous rotation of the filter cylinder 2, the spring is bent and deformed, the insertion rod 12 is inclined and moves out of the filter hole 3 and contacts the cylinder surface 4 again, the process is repeated, each filter hole is cleaned, the blockage is prevented, since the first gear 14 is also engaged with the gear teeth 5, when the gear teeth 5 are driven to rotate by the filter cylinder 2, the first gear 14 is driven to rotate and then drives the brush 13 to rotate, when the brush 13 rotates, the surface of the insertion rod 12 can be cleaned, the insertion rod 12 is cleaned, the impurities adhered to the insertion rod 12 are prevented from accumulating, so that the insertion rod 12 is stuck when the insertion rod 12 penetrates through the filter hole 3, the cylinder cover 6 is regularly disassembled, and the impurities in the filter cylinder 2 are taken out;

[0064] The waste water filtered by the filter cartridge 2 once enters 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, the electric valve can be opened to put the granular flocculants or alum into the inside of the hollow frame 23 before filtering, the flocculants and the alum are water purification materials, and the hollow frame 23 is provided with a discharge port at the bottom, the motor 16 can rotate in the positive and negative directions, so the screw rod 17 can rotate in the positive and negative directions, and then the pressing plate 24 is reciprocated, the flocculants and the alum are crushed when the pressing plate 24 moves, the caked flocculants or alum can be crushed, and the crushed flocculants and alum can leak into the inside of the collecting box 15 from the discharge port, the purpose of crushing is that the small granular flocculants and alum can quickly mix with water, the time of secondary filtering water is shortened, and the rotation of the screw rod 17 drives the second sprocket 30 to rotate, then drives the first sprocket 27 to rotate through the chain 31, and then drives the first round rod 26 and the cam 28 to rotate, the cam 28 contacts the extension handle 34 when rotating, and then drives the second round rod 32 and the push plate 33 to rotate, and the swing rib 29 swings when the cam 28 rotates, and moves in the position of the slot 35, drives the second round rod 32 and the push plate 33 to move forward and backward, and the push plate 33 can realize the two movement modes of rotation and forward and backward movement, the range of stirring the waste water in the collecting box 15 is improved through the two movement modes, the granular flocculants and alum are quickly dissolved in water to realize secondary purification, the flocculants can quickly absorb the small impurities in the waste water, and the alum can purify water, and the water valve installed on the side of the collecting box 15 can discharge the purified water in the collecting box 15.

[0065] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A metalworking wastewater filtration apparatus comprising: Support frame (1), characterized in that the top of the support frame (1) is rotatably connected with a filter cartridge (2), the filter cartridge (2) comprises filter holes (3) and a cylinder surface (4), the end of the filter cartridge (2) is provided with a cylinder cover (6), the cylinder cover (6) is connected with a water inlet (7), the upper side of the filter cartridge (2) is provided with a hollow box (9), the inner cavity side wall of the hollow box (9) is slidably connected with a horizontal plate (10), the upper end of the horizontal plate (10) is connected with a first spring (11), the other end of the first spring (11) is connected with the inner cavity top wall of the hollow box (9), the bottom of the horizontal plate (10) is connected with a plurality of vertically arranged insertion rods (12), the bottom of the hollow box (9) is provided with a plurality of through holes for the insertion rods (12) to pass through, the diameter of the insertion rod (12) is smaller than the diameter of the filter hole (3), the insertion rod (12) is connected with the cylinder surface (4) by passing through the through hole and the filter hole (3). The inner cavity of the hollow box (9) is rotatably connected with a brush (13), the brush (13) can be connected with the insertion rod (12); the filter cartridge (2) or the cylinder cover (6) is provided with a gear tooth (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 engaged with the gear tooth (5), and the brush (13) is located in the circumferential direction of the insertion rod (12).

2. The metal working wastewater filtration apparatus of claim 1, wherein, 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 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 one side or both sides of the hollow box (9) is provided with a detachable box cover.

3. The metal working wastewater filtration apparatus of claim 1, wherein, The upper end of the hollow box (9) is connected with a support rod (8), and the other end of the support rod (8) is connected with the support frame (1).

4. A metalworking wastewater filtration apparatus as defined in claim 3, wherein, The lower side of the filter cartridge (2) is provided with a collection box (15), the top of the collection box (15) is provided with an opening (37), the collection box (15) is connected with a motor (16), the inside of the collection box (15) is rotatably connected with a screw rod (17), the output end of the motor (16) is connected with the screw rod (17), the other end of the screw rod (17) is connected with a transmission assembly, and the transmission assembly is in transmission connection with the gear tooth (5).

5. The metal working wastewater filtration apparatus of claim 4, wherein, The transmission assembly comprises a first pulley (18), a first transmission 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 with the first pulley (18), the support frame (1) is rotatably connected with a rotating shaft, and the second pulley (20) and the second gear (21) are respectively connected at both ends of the rotating shaft, the second gear (21) is engaged with the gear tooth (5), and the first pulley (18) and the second pulley (20) are connected through the first transmission belt (22).

6. The metal working wastewater filtration apparatus of claim 4, wherein, The top of the inner cavity of the collecting box (15) is provided with a hollow frame (23), the inside of the hollow frame (23) is connected with a vertically arranged pressing plate (24), the screw rod (17) penetrates through the pressing plate (24) and is threadedly connected with the pressing plate (24), the screw rod (17) drives the pressing plate (24) to slide in the horizontal direction, and the hollow frame (23) is provided with a discharge port.

7. A metal working wastewater filtration device according to claim 4, wherein The collecting box (15) is internally provided with an agitating assembly, and the agitating assembly is connected with the screw rod (17).

8. A metalworking wastewater filtration apparatus as defined in claim 7, wherein, The agitating assembly comprises a support plate (25), a first round rod (26), a first chain wheel (27), a cam (28), a second chain wheel (30), a chain (31), a second round rod (32), a push plate (33) and an extension handle (34), the screw rod (17) penetrates through and is fixedly connected to the second chain wheel (30), the second chain wheel (30) is connected to the first chain wheel (27) through the chain (31), the bottom of the inner cavity of the collecting box (15) is provided with two support plates (25), the two support plates (25) are rotationally connected with the first round rod (26), the two ends of the first round rod (26) are connected with the first chain wheel (27) and the cam (28) respectively, the surface of the cam (28) is circumferentially provided with a closed swing rib (29), the second round rod (32) penetrates through the two support plates (25), the second round rod (32) can rotate relative to the support plate (25) and slide along the length direction of the second round rod (32), the two ends of the second round rod (32) are connected with the push plate (33) and the extension handle (34) respectively, 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 with a second spring (36), and the other end of the second spring (36) is connected with the hollow frame (23).

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