Metal surface treatment equipment for hardware processing

Abstract

The present invention discloses a metal surface treatment equipment for hardware processing, including a circular track, a cleaning box, a cleaning roller, a driving assembly and a recovery liquid supply assembly. A first partition is provided in the inner extension direction of the cleaning box to divide the inner side of the cleaning box into a "U"-shaped cleaning groove, and the cleaning groove includes vertical grooves located on both sides and a curved groove located at one end of the two vertical grooves; the cleaning roller includes a driving cleaning roller and a driven cleaning roller arranged oppositely in each of the vertical grooves, the driving cleaning roller is arranged on the first partition, and the driven cleaning roller is arranged on the cleaning box. The present invention relates to the field of hardware cleaning technology, and mobile online cleaning of hardware is realized by using a circular track, an electric hoist and a cleaning box with a U-shaped cleaning groove. This design not only improves the cleaning efficiency, but also ensures the uniformity of cleaning, so that each hardware can be fully processed.

Description

Technical Field

[0001] The invention relates to the technical field of hardware cleaning, in particular to metal surface treatment equipment for hardware processing. Background Art

[0002] In the field of hardware processing, metal surface treatment is a key step to ensure product quality and extend service life. In the traditional hardware processing process, after metal materials are processed by machine tools into various parts, further surface treatment is usually required to improve their performance and appearance. These treatments include cleaning, degreasing, rust removal and other processes, the purpose of which is to remove impurities, oil stains and other pollutants generated during the processing to prevent corrosion and improve the durability and appearance of the product.

[0003] However, existing metal surface treatment equipment for hardware processing has some shortcomings when performing these processes. For example, in the cleaning and degreasing process, immersion or spray washing methods are commonly used. Although these methods are simple, they often cannot completely remove impurities and oil layers on hardware in a short period of time, especially for parts with complex structures or rough surfaces, the cleaning effect is even more difficult to be satisfactory. In addition, the cleaning liquid in the traditional method often cannot fully contact all surfaces of the hardware, resulting in uneven cleaning and affecting the quality of the final product.

[0004] In order to solve the above problems, the industry urgently needs a device that can efficiently and comprehensively treat the surface of hardware. Such equipment should be able to adapt to hardware of different shapes and sizes, ensure that the cleaning liquid can cover every corner, and at the same time improve cleaning efficiency, shorten processing time, reduce environmental pollution, and reduce operating costs. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a metal surface treatment device for hardware processing, which solves the problem that the existing cleaning equipment cannot clean the hardware thoroughly.

[0006] To achieve the above object, the present invention is implemented through the following technical scheme: a metal surface treatment equipment for hardware processing, comprising:

[0007] A circular track on which a number of electric hoists are arranged;

[0008] A cleaning box is located below the annular track; a first partition is provided in the inner extension direction of the cleaning box to divide the inner side of the cleaning box into a "U"-shaped cleaning groove, and the cleaning groove includes vertical grooves located on both sides and a curved groove located at one end of the two vertical grooves;

[0009] Cleaning rollers, including a driving cleaning roller and a driven cleaning roller arranged opposite to each other in each of the vertical grooves, the driving cleaning roller being arranged on the first partition plate, and the driven cleaning roller being arranged on the cleaning box;

[0010] A driving assembly drives the driving cleaning roller to rotate;

[0011] The liquid supply recovery component is arranged at the end of the cleaning box away from the curved groove.

[0012] Preferably, both ends of the driven cleaning roller are arranged on a support assembly, and the support assembly comprises:

[0013] A side support frame, fixed on the wall surface of the cleaning box;

[0014] A rectangular groove formed on the side support frame;

[0015] A guide rail, fixed in the rectangular groove;

[0016] A slider is slidably connected to the guide rail, and the driven cleaning roller is rotatably connected to the slider;

[0017] A pneumatic telescopic adjustment component is arranged at the middle of the driven cleaning roller, which drives the driven cleaning roller to approach or move away from the driving cleaning roller in a rotating state.

[0018] Preferably, the pneumatic telescopic adjustment component comprises:

[0019] A cylinder is fixed on the wall of the cleaning box, an air cavity is formed inside the cylinder, and an air supply pipe for inflating the air cavity is provided on the cylinder;

[0020] A spring, arranged in the air cavity, with its bottom fixed to the inner bottom surface of the cylinder;

[0021] A piston rod is inserted into the air cavity and fixedly connected to the spring, and a first exhaust nozzle is provided at the portion of the piston rod inserted into the air cavity;

[0022] The main support frame is fixed to the end of the piston column extending out of the air cavity, and the driven cleaning roller is rotatably connected to the main support frame.

[0023] Preferably, the pneumatic telescopic adjustment component further comprises:

[0024] an impeller, fixed on the driven cleaning roller;

[0025] The second exhaust nozzle is fixed on the main support frame, and the air outlet end is arranged toward the impeller, and the second exhaust nozzle is communicated with the air cavity.

[0026] Preferably, the driving cleaning roller and the driven cleaning roller are provided with roller brush cylinders.

[0027] Preferably, the liquid recovery and supply assembly comprises:

[0028] An operating table is arranged at the end of the cleaning box away from the curved groove, and the interior of the operating table is divided into a recovery liquid chamber and an operating chamber by a baffle;

[0029] A reflux pipe is provided on the operating table and communicated with the recovery liquid chamber, and the reflux pipe is arranged in a vertical groove located on the right side;

[0030] A filter connected to the recovery liquid chamber through a liquid return pipe;

[0031] A suction pump is fixed on the filter, a liquid outlet end of the suction pump is connected to a liquid outlet nozzle through a liquid supply pipe, and the liquid outlet nozzle is arranged in a vertical groove located on the left side.

[0032] Preferably, the top surface of the operating table is divided into a connecting table and a hanging table by a second partition, a liquid flow hole is opened on the inner side of the second partition, so that the connecting table and the hanging table are connected, and a through hole connected to the recovery liquid chamber is opened on the connecting table;

[0033] A drainage mesh plate is arranged on the top of the connecting piece table.

[0034] Preferably, the driving assembly is arranged in the operating cavity, and the driving assembly comprises:

[0035] A motor, fixed in the operating cavity;

[0036] The chain is wound around the output ends of the two driving cleaning rollers and the motor in sequence.

[0037] Preferably, a bottom groove plate is fixed to the bottom of the two vertical grooves and the curved groove, and the top surface of the bottom groove plate is an arc-shaped surface.

[0038] Preferably, upper baffles are fixed on both sides of the tops of the two vertical grooves, and a gap groove is formed between the two upper baffles.

[0039] Beneficial effects of the present invention: By using the metal surface treatment equipment for hardware processing provided by the present invention, compared with the prior art, the metal surface treatment equipment for hardware processing realizes mobile online cleaning of hardware by using a circular track, an electric hoist and a cleaning box with a U-shaped cleaning tank. This design not only improves the cleaning efficiency, but also ensures the uniformity of cleaning, so that each hardware can be fully treated.

[0040] The countercurrent flushing method can ensure the cleaning effect while reducing the amount of cleaning fluid used and reducing costs. At the same time, by setting the driving cleaning roller and the driven cleaning roller to squeeze the moving hardware, the stubborn stains and oil layer on the surface of the hardware can be effectively removed, improving the cleaning quality.

[0041] High-pressure gas is ejected through the second air nozzle and acts on the impeller, causing the impeller to rotate and drive the driven cleaning roller to rotate. This design not only increases the cleaning power, but also causes the hardware and the cleaning liquid to produce continuous vibration, further enhancing the cleaning effect. At the same time, the design of the air pressure in the air cavity gradually increases to push the piston column and the main support frame outward, causing the driven cleaning roller to move toward the driving cleaning roller to squeeze and rub the hardware, which can increase the contact area and pressure on the hardware, thereby improving the cleaning efficiency.

[0042] When the first exhaust nozzle moves out of the cylinder, the high-pressure gas in the air cavity is ejected from the first exhaust nozzle and acts on the bottom position of the hardware along the arc surface. This design makes the hardware shake irregularly, ensuring that different surfaces of the hardware can contact the driving cleaning roller and the driven cleaning roller, thereby achieving all-round cleaning without dead ends.

[0043] In summary, the metal surface treatment equipment for hardware processing has shown significant advantages in improving cleaning efficiency, ensuring cleaning quality, saving resources and reducing costs, and is of great significance to improving the overall level of the hardware processing industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0045] Figure 2 For the present invention Figure 1 A top view of

[0046] Figure 3 It is a cross-sectional view of the cleaning box of the present invention;

[0047] Figure 4 A top view of the operating table of the present invention;

[0048] Figure 5 This is a schematic diagram of the internal structure of the operating table of the present invention;

[0049] Figure 6 It is a schematic diagram of the connection structure of the motor, chain and driving cleaning roller of the present invention;

[0050] Figure 7 It is a schematic diagram of the structure of the driven cleaning roller group of the present invention;

[0051] Figure 8 It is a schematic diagram of the connection structure between the pneumatic telescopic adjustment component and the driven cleaning roller group of the present invention;

[0052] Fig. 9 This is a state diagram of the gap groove structure of the present invention.

[0053] Description of reference numerals in the figures

[0054] 1. Circular track, 2. Cleaning box, 3. Operating table, 4. Filter, 5. First partition, 6. Cleaning tank, 61. Vertical tank, 62. Bend tank, 7. Connecting table, 8. Hanging table, 9. Suction pump, 10. Upper baffle, 11. Gap tank, 12. Drain screen, 13. Liquid return pipe, 14. Second partition, 15. Liquid outlet nozzle, 16. Reflux pipe, 17. Driving cleaning roller, 18. Driven cleaning roller, 19. Bottom tank plate, 20. Curved surface, 21. Pneumatic Telescopic adjustment component, 211, cylinder, 212, main support frame, 213, air cavity, 214, spring, 215, air supply pipe, 216, first exhaust nozzle, 217, second exhaust nozzle, 218, impeller, 219, piston column, 22, through hole, 23, liquid supply pipe, 24, liquid flow hole, 25, liquid recovery cavity, 26, operating cavity, 27, motor, 28, chain, 29, side support frame, 30, roller brush, 31, rectangular groove, 32, slider, 33, guide rail. DETAILED DESCRIPTION

[0055] 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. As long as the effects of the present invention can be exerted, various changes can be made to the implementation scheme.

[0056] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process.

[0057] Reference Figure 1-9 A metal surface treatment device for hardware processing according to this embodiment will be described.

[0058] The processing equipment includes a circular track 1 and a cleaning box 2, wherein the circular track 1 is located directly above the cleaning box 2, and a plurality of electric hoists are arranged on the circular track 1. When in use, the hardware is fastened to a traction rope, and each electric hoist is hooked with a traction rope and moves on the circular track 1, carrying the hardware to move in the cleaning box 2 during the movement.

[0059] like Figure 1 , Figure 2 and Figure 3As shown, a first partition 5 is provided in the inner extension direction of the cleaning box 2, dividing the inner side of the cleaning box 2 into a "U"-shaped cleaning groove 6, in which cleaning liquid flows, and the cleaning groove 6 includes vertical grooves 61 located on both sides and curved grooves 62 located at one end of the two vertical grooves 61. When the electric hoist moves on the circular track 1, it first moves from one end of one vertical groove 61 to the curved groove 62, and then moves to the other vertical groove 61 after passing through the curved groove 62, so as to clean the hardware and remove impurities and oil on the surface of the hardware.

[0060] Upper baffles 10 are fixed on both sides of the top of the two vertical grooves 61, and a gap groove 11 is formed between the two upper baffles 10. The upper baffles 10 prevent the cleaning liquid from splashing outward, and can limit the moving track of the hardware to prevent deviation during the movement. Fig. 9 As shown, the gap groove 11 can be straight or continuously curved. In the straight state, the traction rope carries the hardware to move in a straight line in the cleaning tank 6; in the continuously curved state, the traction rope carries the hardware to move in the cleaning tank 6 by swinging left and right according to the repeatedly curved gap groove 11, and can contact the driving cleaning roller 17 and the driven cleaning roller 18 on both sides.

[0061] like Figure 3 As shown, the bottom of the two vertical grooves 61 and the curved groove 62 is fixed with a bottom groove plate 19, and the top surface of the bottom groove plate 19 is an arc surface 20. Specifically, the bottom surface thickness of the bottom groove plate 19 gradually decreases from one end of the liquid nozzle 15 in the cleaning tank 6 to one end of the return pipe 16, that is, the bottom surface horizontal line of the bottom groove plate 19 at the return pipe 16 is lower than the bottom surface horizontal line of the bottom groove plate 19 at the liquid nozzle 15, so that the cleaning liquid can flow along the slope toward the return pipe 16 when it flows in the cleaning tank 6 after being sprayed by the liquid nozzle 15. The moving direction of the hardware is opposite to the flow direction of the cleaning liquid, that is, it moves from the return pipe 16 to the liquid nozzle 15. The purpose of adopting the above-mentioned design method is to enable the hardware to be flushed by the flowing cleaning liquid when moving against the current, thereby improving the cleaning effect of the hardware; and, when the hardware enters the cleaning tank 6 from the position of the reflux pipe 16, it first contacts the sewage, and gradually contacts the clean water sprayed by the liquid spray nozzle 15 during the movement, so that the hardware is impacted by the sewage during the entry stage and contacts the clean water during the removal stage, thereby improving the surface cleanliness of the hardware.

[0062] like Figure 1 , Figure 2 and Figure 3As shown, cleaning rollers are arranged in the cleaning box 2, and the cleaning rollers include a driving cleaning roller 17 and a driven cleaning roller 18 arranged opposite to each other in each vertical groove 61, and a roller brush cylinder 30 is arranged on the driving cleaning roller 17 and the driven cleaning roller 18. Specifically, the driving cleaning roller 17 is arranged on the first partition 5, and the driven cleaning roller 18 is arranged on the cleaning box 2. When the traction rope carries the hardware to move in the cleaning tank 6 and is washed and cleaned by the flowing cleaning liquid, it is also contacted by the roller brushes of the driven cleaning roller 17 and the driven cleaning roller 18, and the impurities and oil on the surface of the hardware are removed by physical contact.

[0063] In one embodiment, Figure 8 As shown, both ends of the driven cleaning roller 18 are arranged on a support assembly, and the support assembly includes a side support frame 29, a rectangular groove 31, a guide rail 33 and a slider 32. The side support frame 29 is fixed on the wall surface of the cleaning box 2, the rectangular groove 31 is formed on the side support frame 29, the guide rail 33 is fixed in the rectangular groove 31, the slider 32 is slidably connected to the guide rail 33, and the driven cleaning roller 18 is rotatably connected to the slider 32. The guide rail 33 is laid along the cross-sectional direction of the cleaning tank 6, so that when the driven cleaning roller 18 is driven, the slider 32 is driven to move on the guide rail 33, and when moving, it moves close to or away from the driving cleaning roller 17. When close to each other, the driven cleaning roller 18 and the driving cleaning roller 17 squeeze and rub the hardware to enhance the cleaning effect on the hardware.

[0064] like Figure 8 As shown, a pneumatic telescopic adjustment component 21 is provided in the middle of the driven cleaning roller 18 to drive the driven cleaning roller 18 to approach or move away from the driving cleaning roller 17 in a rotating state. The pneumatic telescopic adjustment component 21 includes a cylinder 211, a spring 214, a piston column 219 and a main support frame 212. The cylinder 211 is fixed on the wall of the cleaning box 2, and an air cavity 213 is formed on the inner side of the cylinder 211. An air supply pipe 215 for inflating the air cavity 213 is provided on the cylinder 211, and the air supply pipe 215 is connected to an air pump; the spring 214 is arranged in the air cavity 213, and the bottom is fixed to the bottom surface of the cylinder 211; the piston column 219 is inserted into the air cavity 213 and is fixedly connected to the spring 214, and the part of the piston column 219 inserted into the air cavity 213 is provided with a first exhaust nozzle 216; the main support frame 212 is fixed to the end of the piston column 219 extending out of the air cavity 213, and the driven cleaning roller 18 is rotatably connected to the main support frame 212. It also includes an impeller 218 and a second exhaust nozzle 217. The impeller 218 is fixed on the driven cleaning roller 18. The second exhaust nozzle 217 is fixed on the main support frame 212, and the air outlet end is arranged toward the impeller 218. The second exhaust nozzle 217 is connected to the air cavity 213. A one-way valve is arranged in the first exhaust nozzle 216 and the second exhaust nozzle 217. It should be noted that the air outlet volume of the second exhaust nozzle 217 is L1, and the air intake volume of the air supply pipe 215 is L2, wherein L2>L1.

[0065] High-pressure gas is filled into the air cavity 213, and the high-pressure gas is ejected through the second air nozzle 217 and acts on the impeller 218. The rotation of the impeller 218 drives the driven cleaning roller 18 to rotate. At the same time, the impeller 218 guides the high-pressure gas to the roller brush cylinder 30, so that the high-pressure gas acts on the hardware in contact with the roller brush cylinder 30; and the air pressure in the air cavity 213 gradually increases to push the piston column 219 and the main support frame 212 to move outward, so that the driven cleaning roller 18 moves toward the direction of the driving cleaning roller 17 to squeeze and rub the hardware. When the first exhaust nozzle 216 moves out of the cylinder 211, the high-pressure gas in the air cavity 213 is ejected by the first exhaust nozzle 216 and acts on the bottom position of the hardware along the arc surface 20; after the air pressure in the air cavity 213 is reduced, the spring 214 pulls the main support frame 212 and the driven cleaning roller 18 to reset.

[0066] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the treatment equipment also includes a recovery liquid supply component, which is arranged at the end of the cleaning box 2 away from the curved groove 62. The recovery liquid supply component includes an operating table 3, a reflux pipe 16, a filter 4 and a suction pump 9. The filter 4 is a multi-media filter. The operating table 3 is arranged at the end of the cleaning box 2 away from the curved groove 62. The interior of the operating table 3 is separated by a baffle to form a recovery liquid chamber 25 and an operation chamber 26; the reflux pipe 16 is opened on the operating table 3 and is connected to the recovery liquid chamber 25. The reflux pipe 16 is arranged in the vertical groove 61 located on the right; the filter 4 is connected to the recovery liquid chamber 25 through the return liquid pipe 13; the suction pump 9 is fixed on the filter 4, and the liquid outlet end of the suction pump 9 is connected to the liquid outlet nozzle 15 through the liquid supply pipe 23. The liquid outlet nozzle 15 is arranged in the vertical groove 61 located on the left. The cleaning liquid is recycled, and the impurities in the cleaning liquid are filtered by the filter 4 and then put into use again.

[0067] The operation mode of the recovery liquid supply component is: the suction pump 9 sucks the cleaning liquid filtered by the filter 4, and sprays it into the cleaning tank 6 through the liquid supply pipe 23 and the liquid outlet nozzle 15. After flowing from one end to the other end in the cleaning tank 6, the dirty liquid flows into the recovery liquid chamber 25 through the return pipe 16, and the dirty liquid in the recovery liquid chamber 25 enters the filter 4 through the return pipe 13.

[0068] The top surface of the operating table 3 is divided into a connecting table 7 and a hanging table 8 by a second partition 14. A liquid flow hole 24 is provided on the inner side of the second partition 14, so that the connecting table 7 and the hanging table 8 are connected. A through hole 22 connected to the recovery liquid chamber 25 is provided on the connecting table 7. It should be noted that the electric hoist starts from the hanging table 8, moves around the circular track 1, and stops at the connecting table 7; the hanging table 8 is located at the end position of the vertical groove 61 where the reflux pipe 16 is installed, and the connecting table 7 is located at the end position of the vertical groove 61 where the liquid outlet nozzle 15 is installed. The cleaning liquid dripping on the surface of the hanging table 8 is gathered on the connecting table 7 by the liquid flow hole 24, and finally flows into the recovery liquid chamber 25 through the through hole 22.

[0069] A drain mesh plate 12 is provided on the top of the connecting table 7 . The function of the drain mesh plate 12 is to temporarily place the cleaned hardware so that the cleaning liquid on the surface of the hardware can drip onto the connecting table 7 through the drain mesh plate 12 .

[0070] The processing device also includes a driving assembly, which drives the driving cleaning roller 17 to rotate. The driving assembly is arranged in the operating chamber 26, and the driving assembly includes a motor 27 and a chain 28. The motor 27 is fixed in the operating chamber 26, and the chain 28 is wound around the two driving cleaning rollers 17 and the output end of the motor 27 in sequence.

[0071] Working principle: The cleaning liquid filtered by the filter 4 is sucked by the suction pump 9 and sprayed into the cleaning tank 6 through the liquid supply pipe 23 and the liquid outlet nozzle 15. The electric hoist is hooked with a traction rope and moves on the circular track 1. First, it moves from one end of a vertical groove 61 to the curved groove 62, and then moves to another vertical groove 61 after passing through the curved groove 62. The hardware is washed by the flowing cleaning liquid when moving in countercurrent.

[0072] When the hardware moves in the vertical groove 61, high-pressure gas is filled into the air cavity 213, and the high-pressure gas is ejected through the second air nozzle 217 and acts on the impeller 218. The rotation of the impeller 218 drives the driven cleaning roller 18 to rotate. At the same time, the impeller 218 guides the high-pressure gas to the roller brush cylinder 30, so that the high-pressure gas acts on the hardware in contact with the roller brush cylinder 30, so that the hardware and the cleaning liquid produce continuous vibration, thereby improving the contact effect between the hardware and the cleaning liquid; and the air pressure in the air cavity 213 gradually increases to push the piston column 219 and the main support frame 212 Move outward, so that the driven cleaning roller 18 moves toward the driving cleaning roller 17 to squeeze and rub the hardware, increasing the contact area and pressure on the hardware. When the first exhaust nozzle 216 moves out of the cylinder 211, the high-pressure gas in the air cavity 213 is ejected from the first exhaust nozzle 216, and acts on the bottom position of the hardware along the arc surface 20, causing the hardware to shake irregularly, so that different surfaces of the hardware contact the driving cleaning roller 17 and the driven cleaning roller 18; after the air pressure in the air cavity 213 is reduced, the spring 214 pulls the main support frame 212 and the driven cleaning roller 18 to reset. Repeating this process realizes squeezing, friction and air flow agitation of the hardware.

[0073] After the cleaning, the hardware is separated from the electric hoist on the connecting table 7, and the electric hoist continues to move back on the circular track 1 to the upper part of the hanging table 8 to hook the hardware again. After the cleaning liquid flows from one end to the other end in the cleaning tank 6, the dirty liquid flows into the recovery liquid chamber 25 through the return pipe 16, and the dirty liquid in the recovery liquid chamber 25 enters the filter 4 through the return pipe 13.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal surface treatment equipment for hardware processing, characterized in that: include: A circular track (1) on which a plurality of electric hoists are arranged; A cleaning box (2) is located below the annular track (1); a first partition (5) is provided in the inner extension direction of the cleaning box (2) to divide the inner side of the cleaning box (2) into a "U"-shaped cleaning groove (6); the cleaning groove (6) includes vertical grooves (61) located on both sides and a curved groove (62) located at one end of the two vertical grooves (61); A cleaning roller, comprising a driving cleaning roller (17) and a driven cleaning roller (18) arranged opposite to each other in each of the vertical grooves (61), wherein the driving cleaning roller (17) is arranged on the first partition plate (5), and the driven cleaning roller (18) is arranged on the cleaning box (2); A driving assembly, driving the driving cleaning roller (17) to rotate; A liquid supply recovery component is arranged at an end of the cleaning box (2) away from the curved groove (62); The liquid recovery and supply assembly comprises: An operating table (3) is arranged at an end of the cleaning box (2) away from the curved groove (62), and the interior of the operating table (3) is divided by a baffle to form a recovery liquid chamber (25) and an operating chamber (26); A reflux pipe (16) is provided on the operating table (3) and is connected to the recovery liquid chamber (25); the reflux pipe (16) is arranged in the vertical groove (61) located on the right side; A filter (4) is connected to the recovery liquid chamber (25) via a liquid return pipe (13); A suction pump (9) is fixed on the filter (4); a liquid outlet end of the suction pump (9) is connected to a liquid outlet nozzle (15) via a liquid supply pipe (23); and the liquid outlet nozzle (15) is arranged in a vertical groove (61) located on the left side; A bottom groove plate (19) is fixed at the bottom of the two vertical grooves (61) and the curved groove (62), and the top surface of the bottom groove plate (19) is an arc-shaped surface (20); the bottom surface thickness of the bottom groove plate (19) gradually decreases from one end of the liquid outlet nozzle (15) to one end of the return pipe (16) in the cleaning groove (6), wherein the moving direction of the hardware is opposite to the flow direction of the cleaning liquid, and moves from the return pipe (16) to the liquid outlet nozzle (15); Both ends of the driven cleaning roller (18) are arranged on a support assembly, and the support assembly comprises: A side support frame (29) fixed on the wall surface of the cleaning box (2); A rectangular groove (31) formed on the side support frame (29); A guide rail (33) fixed in the rectangular groove (31); A slider (32) is slidably connected to the guide rail (33), and the driven cleaning roller (18) is rotatably connected to the slider (32); A pneumatic telescopic adjustment component (21) is provided in the middle of the driven cleaning roller (18) to drive the driven cleaning roller (18) to move closer to or farther away from the driving cleaning roller (17) in a rotating state; The pneumatic telescopic adjustment component (21) comprises: A cylinder (211) is fixed on the wall of the cleaning box (2); an air cavity (213) is formed on the inner side of the cylinder (211); and an air supply pipe (215) for inflating the air cavity (213) is provided on the cylinder (211); A spring (214) is disposed in the air cavity (213), and a bottom portion thereof is fixed to the inner bottom surface of the cylinder (211); A piston column (219) is inserted into the air cavity (213) and fixedly connected to the spring (214); a first exhaust nozzle (216) is provided at the portion of the piston column (219) inserted into the air cavity (213); A main support frame (212) is fixed to the end of the piston column (219) extending out of the air cavity (213), and the driven cleaning roller (18) is rotatably connected to the main support frame (212); The pneumatic telescopic adjustment component (21) further comprises: An impeller (218) fixed on the driven cleaning roller (18); A second exhaust nozzle (217) is fixed on the main support frame (212), and an air outlet end is arranged toward the impeller (218), and the second exhaust nozzle (217) is in communication with the air cavity (213); a one-way valve is arranged in each of the first exhaust nozzle (216) and the second exhaust nozzle (217), an air outlet volume of the second exhaust nozzle (217) is L1, and an air intake volume of the air supply pipe (215) is L2, wherein L2>L1; The driving cleaning roller (17) and the driven cleaning roller (18) are provided with a roller brush cylinder (30).

2. The metal surface treatment equipment for hardware processing according to claim 1, characterized in that: The top surface of the operating table (3) is divided into a connecting table surface (7) and a hanging table surface (8) by a second partition (14); a liquid flow hole (24) is provided on the inner side of the second partition (14) so ​​that the connecting table surface (7) and the hanging table surface (8) are connected; and a through hole (22) connected to a recovery liquid chamber (25) is provided on the connecting table surface (7); A drainage mesh plate (12) is provided on the top of the connecting table top (7).

3. The metal surface treatment equipment for hardware processing according to claim 2, characterized in that: The drive assembly is arranged in the operating chamber (26), and the drive assembly comprises: A motor (27) fixed in the operating chamber (26); The chain (28) is wound around the two driving cleaning rollers (17) and the output end of the motor (27) in sequence.

4. The metal surface treatment equipment for hardware processing according to claim 2, characterized in that: Upper baffles (10) are fixed on both sides of the top of the two vertical grooves (61), and a gap groove (11) is formed between the two upper baffles (10).

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