A cleaning and painting system for steel member processing

The automated cleaning and spraying process of the steel component processing cleaning and spraying system solves the problems of numerous cleaning procedures and low efficiency in the existing technology, and achieves fast and stable cleaning and spraying results, adapting to steel components of different specifications.

CN116551539BActive Publication Date: 2025-12-23安徽伟宏钢结构集团股份有限公司
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Patent Information

Application Number
CN202310540396.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-15
Publication Date
2025-12-23
Estimated Expiration
2043-05-15

AI Technical Summary

Technical Problem

The existing steel component cleaning process involves numerous steps, requires a large amount of manpower, affects work efficiency, and is not thorough.

Method used

A cleaning and spraying system for steel component processing is adopted. Through the cooperation of actuators and auxiliary mechanisms, the cleaning and spraying processes are automated. Multifunctional brushes and adsorption blocks are used to clean steel components, reducing processes and improving efficiency.

Benefits of technology

It enables rapid and stable cleaning and spraying of steel components, reduces procedures, improves work efficiency, and reduces the leakage of harmful gases and dust during the cleaning process, adapting to steel components of different specifications.

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Abstract

The present application relates to the field of steel component processing device, disclose a kind of cleaning and spraying system for steel component processing, including work tank, its inside is provided with holder;Cross electric slide rail, it is fixedly connected at the top of work tank, its moving pipe is connected with storage box one;Storage box two, it is fixedly connected at the lower side of storage box one, its bottom is connected with adjusting structure;Actuator, it is connected on adjusting mechanism, its two sides are provided with auxiliary mechanism connected with adjusting mechanism;Processing mechanism, it is arranged at the bottom of work tank, the present application can complete the whole process of cleaning and spraying, reduce process, increase efficiency, and different functional brushes that can be unfolded in actuator can increase the whole cleaning efficiency, further guarantee the whole work to carry out quickly and stably.
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Description

TECHNICAL FIELD

[0001] The present application relates to the field of steel member processing device, especially to a cleaning and spraying system for steel member processing. BACKGROUND

[0002] Steel member refers to a steel structure combined member capable of bearing and transmitting load, which is formed by connecting steel plates, angle steels, channel steels, I-beams, welded or hot-rolled H-shaped steel cold bending or welding connecting members. Before the steel member is processed, many steel members are placed in the outside world and exposed to the air, and the outer surface has rust or other impurities, which has a certain influence on the subsequent processing. Therefore, before processing, a certain cleaning and surface treatment is generally performed.

[0003] The existing cleaning generally adopts manual polishing or high-pressure water washing, and then wiping, adding surface treatment agent, the overall process is more, the labor input is larger, and the overall work efficiency is affected. SUMMARY

[0004] In order to solve the technical problem of poor cleaning, the present application provides a cleaning and spraying system for steel member processing.

[0005] The present application adopts the following technical scheme: a cleaning and spraying system for steel member processing, comprising:

[0006] A work tank is internally provided with a clamp; a cross-shaped electric sliding rail is fixedly connected to the top of the work tank, and a storage tank one is connected to the moving pipe thereof; a storage tank two is fixedly connected to the lower side of the storage tank one, and an adjusting structure is connected to the bottom thereof; an executing mechanism is connected to the adjusting mechanism, and auxiliary mechanisms are arranged on both sides of the adjusting mechanism; and a processing mechanism is arranged at the bottom of the work tank.

[0007] As a further improvement of the above-mentioned scheme, the adjusting mechanism comprises a balance plate fixedly connected to the storage tank two, a plurality of telescopic rods are fixedly connected to the lower side of the balance plate, an adjusting plate is fixedly connected to the moving end of the telescopic rod, and the executing mechanism and the auxiliary mechanism are fixedly connected to the adjusting plate.

[0008] As a further improvement of the above-mentioned scheme, the actuator comprises: a function box fixedly connected with the adjusting plate, wherein a total pipe is rotatably connected in the middle; a motor fixedly connected on one side of the function box, with an output end drivingly connected with a speed changer, and the output end of the speed changer drivingly connected with two groups of transmission assemblies, one group of transmission assemblies drivingly connected with the total pipe, and the other group of transmission assemblies drivingly connected with a half gear ring; a processing cavity arranged in the function box, with a gas pump arranged in the processing cavity, and an input end of the gas pump connected with a drawer arranged in the function box; a separation box fixedly connected in the middle of the function box, rotatably connected with the total pipe, and provided with a guide hole on one side in communication with the drawer; a rotating box rotatably connected with the function box, and fixedly connected with the half gear ring; a first branch pipe fixedly connected with the total pipe, and provided with second branch pipes on both sides, and one side of the second branch pipe provided with a third branch pipe slidingly connected with the rotating box, and the outer wall of the second branch pipe and the third branch pipe and the first branch pipe fixedly sleeved with a fixed ring, and the fixed ring rotatably connected with a rotating ring, and the two rotating rings connected with an extension pipe, and the bottom end of the second branch pipe, the third branch pipe and the first branch pipe fixedly connected with a hollow ring, and the bottom of the hollow ring fixedly clamped with an adsorption block, and one side of the adsorption block fixedly connected with a function brush, and the outer wall of the hollow ring fixedly connected with two meshing gears; a moving unit arranged in the rotating box, and rotatably connected with the third branch pipe.

[0009] As a further improvement of the above-mentioned scheme, the function box is provided with a filtering cavity, the drawer is arranged in the filtering cavity, and the drawer is provided with a plurality of filter plates and filter cotton, and one side of the drawer is provided with a communication hole for communication.

[0010] As a further improvement of the above-mentioned scheme, the outer side of the function box is fixedly connected with a protective cover, the half gear ring is arranged in the protective cover, the function box is provided with a control cavity, and the control cavity is provided with a controller.

[0011] As a further improvement of the above-mentioned scheme, the moving unit comprises: a maintenance box rotatably connected with the second branch pipe, and provided with guide plates fixedly connected with the rotating box on both sides; a through pipe rotatably sleeved with the second branch pipe, and rotatably sleeved with an isolation box fixedly connected with the maintenance box on the top, and one side of the maintenance box connected with a telescopic hose, and one end of the telescopic hose arranged in a space surrounded by the isolation box and the maintenance box, and the other end fixedly connected with a maintenance sleeve rotatably adjusted with the first branch pipe, and one side of the telescopic hose connected with an auxiliary hose connected with the filtering cavity; a gear two fixedly sleeved on the outer wall of the through pipe, and meshingly connected with a transmission box, and the output end of the transmission box drivingly connected with a gear three, and the gear three meshingly connected with a rack arranged in the guide plate.

[0012] As a further improvement of the above-mentioned scheme, the fixed ring and the rotating ring are provided with communication holes, and one side of the fixed ring is provided with a plurality of guide pipes in communication with the branch pipes.

[0013] As a further improvement of the above scheme, the auxiliary mechanism comprises a one-slotted slide rail fixedly connected with the adjusting plate, a moving end of the one-slotted slide rail is fixedly connected with an auxiliary box, the bottom of the auxiliary box is clamped with a replacement box, a rotating pipe is rotatably connected in the replacement box, the bottom end of the rotating pipe is fixedly connected with a cleaning plate, the bottom of the cleaning plate is clamped with a brush, the top of the auxiliary box is connected with connecting hoses, one of the connecting hoses is connected with the storage box one, and the other two connecting hoses are connected with the storage box two.

[0014] As a further improvement of the above scheme, the clamping device comprises a mover in contact with the working box, one side of the mover is fixedly connected with a telescopic assembly, the extension end of the telescopic assembly is connected with a chuck, and the working box is provided with a moving groove for the movement of the mover.

[0015] As a further improvement of the above scheme, the processing mechanism comprises a collection box at the bottom of the working box, one side of the collection box is communicated with a processing box, one side of the processing box is connected with a processing pump, and the upper cover plate of the collection box is provided with a plurality of processing holes.

[0016] Compared with the prior art, the beneficial effects of the present application are that:

[0017] 1. By cleaning the execution mechanism and cooperating with other devices by the auxiliary auxiliary mechanism, the whole process of cleaning and spraying can be completed, the process is reduced, the efficiency is increased, and the different functional brushes that can be unfolded in the execution mechanism can increase the whole cleaning efficiency, and further ensure that the whole work is quickly and stably carried out.

[0018] 2. By the mutual cooperation between the plurality of devices, multiple suction can be carried out, the overflow of harmful gas or dust is reduced, the production environment is ensured, and different specifications of steel members can be executed, and the effectiveness of the work is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a front view of the present application;

[0020] Figure 2 is a left view of the present application;

[0021] Figure 3 is a partial front view of the present application;

[0022] Figure 4 is a front view of the execution mechanism;

[0023] Figure 5 is a left view of the execution mechanism;

[0024] Figure 6Schematic diagram of the execution mechanism from the local top view;

[0025] Figure 7 For Figure 4 Schematic diagram of the structure amplified at A in the middle;

[0026] Figure 8 For the main view of the moving unit;

[0027] Figure 9 For the left view of the moving unit;

[0028] Figure 10 For the main view of the auxiliary mechanism.

[0029] Main symbol explanation:

[0030] 1, work box; 2, storage box one; 3, storage box two; 4, auxiliary mechanism; 5, execution mechanism; 6, 7, cross electric slide rail; 8, clamping device; 9, processing pump; 10, processing box; 11, collection box; 12, moving groove; 13, balance plate; 14, telescopic rod; 15, adjusting plate; 41, connecting pipe soft; 42, one character slide rail; 43, rotating pipe; 44, brush; 45, cleaning plate; 46, replacement box; 47, auxiliary box; 50, function box; 51, drawer; 52, main pipe; 53, partition box; 54, transmission; 55, motor; 56, transmission assembly; 57, half tooth ring; 58, function brush; 59, telescopic hose; 60, maintenance set; 61, auxiliary hose; 62, rotating box; 63, moving unit; 64, extension pipe; 65, branch pipe two; 66, branch pipe one; 67, hollow ring; 68, branch pipe three; 69, processing cavity; 70, air pump; 71, guide plate; 72, fixed ring; 73, rotating ring; 74, maintenance box; 75, isolation box; 76, through pipe; 77, gear two; 78, gear three. DETAILED DESCRIPTION

[0031] Next, the application will be further described in conjunction with the drawings and specific embodiments, it should be noted that, without conflict, the following description of each embodiment or between the technical features can be arbitrarily combined to form a new embodiment.

[0032] Embodiment:

[0033] Please combine Figures 1-10The utility model provides a kind of cleaning and spraying system for steel member processing, including: work tank 1, its inside is provided with holder 8, work tank 1 supports, while holder 8 carries out certain clamping to steel member, cross electric slide rail 7 is fixedly connected at the top of work tank 1, its moving pipe is connected with storage tank one 2, cross electric slide rail 7 is prior art device, can drive storage tank one 2 to move in two directions, storage tank two 3 is fixedly connected at the downside of storage tank one 2, its bottom is connected with adjusting structure, storage tank two 3 moves with this storage tank one 2, storage tank one 2 and storage tank two 3 are filled with raw material, actuating mechanism 5 is connected on adjusting mechanism, its both sides are provided with auxiliary mechanism 4 connected with adjusting mechanism, actuating mechanism 5 cooperates with auxiliary mechanism 4 and carries out the work of cleaning and spraying, processing mechanism is set at the bottom of work tank 1, and processing mechanism carries out the processing work of auxiliary.

[0034] Adjusting mechanism includes balance plate 13 fixedly connected with storage tank two 3, the downside of balance plate 13 is fixedly connected with a plurality of telescopic rods 14, the moving end of telescopic rod 14 is fixedly connected with adjusting plate 15, actuating mechanism 5 and auxiliary mechanism 4 are fixedly connected with adjusting plate 15, balance plate 13 carries out leveling work, telescopic rod 14 extends and shrinks, realizes the adjustment of distance, adjusting plate 15 carries out stabilization and support fixation.

[0035] The actuating mechanism 5 comprises: a function box 50 fixedly connected with the adjusting plate 15, wherein a total pipe 52 is rotatably connected in the middle of the function box 50, the function box 50 is defined and connected with other devices through the total pipe 52, a motor 55 fixedly connected on one side of the function box 50, an output end of the motor 55 is drivingly connected with a speed changer 54, an output end of the speed changer 54 is drivingly connected with two groups of transmission assemblies 56, one group of the transmission assemblies 56 is drivingly connected with the total pipe 52, the other group of the transmission assemblies 56 is drivingly connected with a half tooth ring 57, the motor 55 provides torque, and the motor 55 rotates periodically back and forth to realize periodic torque providing in different directions, the total pipe 52 and the half tooth ring 57 are driven to rotate by the transmission assemblies 56, and the rotating directions of the total pipe 52 and the half tooth ring 57 are different, a treatment cavity 69 arranged in the function box 50, a gas pump 70 arranged in the treatment cavity 69, an input end of the gas pump 70 is connected with a drawer 51 arranged in the function box 50, the treatment cavity 69 filters gas, the gas pump 70 sucks gas from the drawer 51 to form flow, a separation box 53 fixedly connected in the middle of the function box 50, the separation box 53 is rotatably connected with the total pipe 52, one side of the separation box 53 is provided with a guide hole communicated with the drawer 51, the separation box 53 separates necessary, and further guides gas, a rotating box 62 rotatably connected with the function box 50, and the rotating box 62 is fixedly connected with the half tooth ring 57; a first branch pipe 66 fixedly connected with the total pipe 52, two second branch pipes 65 arranged on two sides of the first branch pipe 66, one side of the second branch pipe 65 is slidingly connected with a third branch pipe 68, the second branch pipe 65 and the third branch pipe 68, and the second branch pipe 65 and the first branch pipe 66 are all fixedly sleeved with a fixed ring 72, the fixed ring 72 is rotatably connected with a rotating ring 73, the two rotating rings 73 are connected with an extension pipe 64, the bottom ends of the second branch pipe 65, the third branch pipe 68 and the first branch pipe 66 are all fixedly connected with a hollow ring 67, the bottom of the hollow ring 67 is fixedly connected with an adsorption block, one side of the adsorption block is fixedly connected with a function brush 58, the outer wall of the hollow ring 67 is fixedly connected with two gears meshing with each other, the three branch pipes can rotate relative to the fixed ring 72, and the internal multiple spaces are communicated through the extension pipe 64 to form an integral whole, the position of the hollow ring 67 changes to form different working radii with the driving of a moving unit 63, different grinding and cleaning are realized with the rotation of the rotating box 62, the function brush 58 is in contact with the steel member, and the surface is cleaned with the rotation of the branch pipes, the moving unit 63 arranged in the rotating box 62 is rotatably connected with the third branch pipe 68, the moving unit drives the second branch pipe 68 to move, and then different opening angles are realized under the limitation, the function brush 58 below the first branch pipe 66 coarsely grinds, the function brush 58 below the second branch pipe 65 finely grinds, and the function brush 58 below the third branch pipe 68 sweeps.

[0036] The function box 50 is provided with a filtering cavity, the drawer 51 is located in the filtering cavity, a plurality of filter plates and filter cotton are arranged in the drawer 51, a communication hole for communication is arranged on one side of the drawer 51, the filter plates cooperate with the filter cotton to filter, the communication hole is used for guiding the gas, the outer side of the function box 50 is fixedly connected with a protective cover, the half tooth ring 57 is located in the protective cover, the function box 50 is provided with a control cavity, and a controller is arranged in the control cavity; the controller in the control cavity is an existing mechanism, and controls the internal part of the device.

[0037] The moving unit 63 comprises a maintaining box 74, a guide plate 71 fixedly connected with the rotating box 62 is arranged on the two sides of the maintaining box 74, the maintaining box 74 is limited with the guide plate 71, thereby limiting the moving track of the whole branch pipe three 68, a conducting pipe 76 rotatably sleeved with the branch pipe two 68, an isolation box 75 fixedly connected with the maintaining box 74 is rotatably sleeved on the top of the conducting pipe 76, one side of the maintaining box 74 is connected with the flexible hose 59, one end of the flexible hose 59 is located in the space surrounded by the isolation box 75 and the maintaining box 74, and the other end is fixedly connected with the maintaining sleeve 60 rotatably adjusted with the branch pipe one 66; one side of the flexible hose 59 is connected with the auxiliary hose 61 connected with the filtering cavity, the gas is guided and transported through the hose, a gear two 77 is fixedly sleeved on the outer wall of the conducting pipe 76, and a transmission box 79 is engagedly connected; the output end of the transmission box 79 is in transmission connection with a gear three 78, the gear three 78 is engagedly connected with a rack located in the guide plate 71, the conducting pipe 76 is driven to rotate while the branch pipe three 68 rotates, and further transmission is made, so that the rack and the gear three 78 are matched with each other, and the movement of the whole maintaining box 74 is realized.

[0038] The communication hole is arranged between the fixed ring 72 and the rotating ring 73, a plurality of flow guide pipes 74 in communication with the branch pipes are arranged on one side of the fixed ring 72, and the communication hole and the flow guide pipes 74 ensure the communication of the whole fluid flow.

[0039] The auxiliary mechanism 4 comprises a T-shaped sliding rail 42 fixedly connected with the adjusting plate 15, the moving end of the T-shaped sliding rail 42 is fixedly connected with an auxiliary box 47, the bottom of the auxiliary box 47 is clamped with a replacement box 46, a rotating pipe 43 is rotatably connected in the replacement box 46, the bottom end of the rotating pipe 43 is fixedly connected with a cleaning plate 45, the bottom of the cleaning plate 45 is clamped with a brush 44, and the top of the auxiliary box 47 is connected with a connecting hose 41; one of the connecting hose 41 is connected with the storage box one 2, and the other two connecting hoses 41 are connected with the storage box two 3; the T-shaped sliding rail 42 is an existing mechanism, and realizes movement in one direction; the pump bodies are arranged in the storage box one 2 and the storage box two 3, the internal solution or powder is pumped out, then is pumped out through the connecting hose 41, and finally is pumped out through the rotating pipe 43, the cleaning plate 45 and the brush 44, so as to be cleaned or sprayed.

[0040] The holder 8 comprises a mover in contact with the working box 1, one side of the mover is fixedly connected with a telescopic assembly, the extension end of the telescopic assembly is connected with a chuck, the working box 1 is provided with a moving groove 12 for the movement of the mover, the mover is of a prior structure and can rotate, and the chuck can be moved through the telescopic assembly, so that steel members of certain specifications can be accommodated, the processing mechanism comprises a collecting box 11 at the bottom of the working box 1, one side of the collecting box 11 is communicated with a processing box 10, one side of the processing box 10 is connected with a processing pump 9, and the upper cover plate of the collecting box 11 is provided with a plurality of processing holes, so that the gas in the working box 1 is treated through the processing box 10 after passing through the collecting box 11, and the auxiliary work is realized.

[0041] The implementation principle of the embodiment of the application is that when working, the holder 8 is moved to the outside, then the chuck is used to clamp the steel member, then the steel member is moved into the working box 1 through the holder 8, at this time, the holder 14 works, so that the functional brush 58 contacts the steel member, the motor 55 is started, the main pipe 52, the branch pipe one 66 and the half tooth ring 57 are periodically rotated, the branch pipe two 65 and the branch pipe three 68 are periodically rotated through transmission, different cleaning brushes 58 are used to realize different work, and at the same time of the rotation of the branch pipe three 68, the movement unit 63 is driven to move, the branch pipe three 68 is further moved, the path in the cleaning process is different, different cleaning is realized, after a certain period of cleaning, the cross-shaped electric sliding rail 7 works, the whole device is moved, the work in the next area is carried out, the cleaning of the whole steel member is ensured, and after the cleaning of the area is completed, the pump-out through the pump body can clean, and the subsequent uniform spraying can be carried out, and the work is completed.

[0042] The above embodiment is only a preferred embodiment of the application, and cannot be used to limit the protection scope of the application, and any non-essential change and replacement made by a person skilled in the art on the basis of the application belongs to the protection scope of the application.

Claims

1. A cleaning and spraying system for processing steel components, characterized in that, include: The work box has a clamp inside; A cross-shaped electric slide rail is fixedly connected to the top of the work box, and its moving tube is connected to a storage box. Storage box two is fixedly connected to the lower side of storage box one, and its bottom is connected to an adjustment structure; An actuator is connected to an adjusting mechanism, and auxiliary mechanisms connected to the adjusting mechanism are provided on both sides of the actuator. The processing mechanism is located at the bottom of the work box; The adjustment mechanism includes a balance plate fixedly connected to the storage box 2, a plurality of telescopic rods fixedly connected to the lower side of the balance plate, and an adjustment plate fixedly connected to the moving end of the telescopic rods. The execution mechanism and the auxiliary mechanism are both fixedly connected to the adjustment plate. The implementing mechanism includes: The function box is fixedly connected to the adjustment plate, and a main pipe is rotatably connected in the middle of it; The motor is fixedly connected to one side of the functional box, and its output end is driven by a gearbox. The output end of the gearbox is driven by two sets of transmission components. One set of transmission components is driven by the main pipe, and the other set of transmission components is driven by a half gear ring. The processing chamber is located inside the functional box, and an air pump is installed inside the processing chamber. The input end of the air pump is connected to a drawer located inside the functional box. The divider box is fixedly connected to the middle of the functional box and is rotatably connected to the main pipe. One side of the divider box has a guide hole that communicates with the drawer. A rotating box, which is rotatably connected to a functional box and fixedly connected to a semi-gear ring; Branch pipe 1 is fixedly connected to the main pipe, and branch pipe 2 is provided on both sides of it. Branch pipe 3 is provided on one side of branch pipe 2 and slidably connected to the rotating box. The outer walls of branch pipe 2 and branch pipe 3, as well as branch pipe 2 and branch pipe 1, are all fixedly fitted with fixing rings. Rotating rings are rotatably connected inside the fixing rings. An extension pipe is connected between the two rotating rings. Hollow rings are fixedly connected to the bottom ends of branch pipe 2, branch pipe 3, and branch pipe 1. An adsorption block is fixedly snapped into the bottom of the hollow ring. A functional brush is fixedly connected to one side of the adsorption block. Two meshing gears are fixedly connected to the outer wall of the hollow ring. The moving unit is located inside the rotating box and is rotatably connected to the three-way branch pipe; The mobile unit includes: The holding box is rotatably connected to the second branch pipe, and guide plates are provided on both sides of the box that are fixedly connected to the rotating box. The guide tube is rotatably connected to the second branch tube, and the top of the guide tube is rotatably connected to the isolation box which is fixedly connected to the maintenance box. A telescopic hose is connected to one side of the maintenance box. One end of the telescopic hose is in the space enclosed by the isolation box and the maintenance box, and the other end is fixedly connected to the maintenance sleeve which is rotatably adjusted to the first branch tube. An auxiliary hose connected to the filter chamber is connected to one side of the telescopic hose. Gear 2 is fixedly sleeved on the outer wall of the guide tube and meshes with a transmission box. The output end of the transmission box is connected to gear 3, and gear 3 meshes with a rack located inside the guide plate. A connecting hole is provided between the fixed ring and the rotating ring, and a plurality of guide pipes connected to the branch pipe are provided on one side of the fixed ring. The auxiliary mechanism includes a linear slide rail fixedly connected to an adjustment plate. An auxiliary box is fixedly connected to the moving end of the linear slide rail. A replacement box is snapped into the bottom of the auxiliary box. A rotating tube is rotatably connected inside the replacement box. A cleaning plate is fixedly connected to the bottom end of the rotating tube. A brush is snapped into the bottom of the cleaning plate. A connecting hose is connected to the top of the auxiliary box. One of the connecting hoses is connected to a storage box, and the other two connecting hoses are connected to a storage box.

2. The cleaning and spraying system for steel component processing as described in claim 1, characterized in that, The functional box is equipped with a filter chamber, and the drawer is located inside the filter chamber. The drawer is equipped with multiple filter plates and filter cotton, and a communication hole is provided on one side of the drawer for communication.

3. The cleaning and spraying system for steel component processing as described in claim 1, characterized in that, A protective cover is fixedly connected to the outside of the functional box, the semi-gear ring is located inside the protective cover, a control cavity is provided inside the functional box, and a controller is provided inside the control cavity.

4. The cleaning and spraying system for steel component processing as described in claim 1, characterized in that, The clamp includes a mover that contacts the work box. A telescopic component is fixedly connected to one side of the mover. A chuck is connected to the extended end of the telescopic component. The work box is provided with a moving slot for moving the mover.

5. The cleaning and spraying system for steel component processing as described in claim 1, characterized in that, The processing mechanism includes a collection box located at the bottom of the working box, a processing box connected to one side of the collection box, a processing pump connected to one side of the processing box, and a plurality of processing holes provided on the upper cover plate of the collection box.

Citation Information

Patent Citations

  • Polishing device for mechanical manufacturing parts

    CN114393486A

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