A rust removal device for hardware machining
By designing an automated conveyor belt, pH adaptive adjustment, and circulating filtration system for rust removal in hardware processing, the problem of pickling solutions not being reusable in existing technologies has been solved. This achieves efficient, stable, and environmentally friendly rust removal for hardware parts, while reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN ZHONGGONG HUANYU MACHINERY CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-06-05
AI Technical Summary
Existing pickling solutions cannot be reused multiple times, resulting in energy waste and failing to achieve low-cost rust removal for metal processing.
A rust removal device was designed, comprising a conveyor belt, a pH detector, a hydraulic cylinder, and a filter. The device transports hardware parts via an automated conveyor belt, removes rust using an acidic solution with adaptive pH adjustment, purifies the rust removal solution through a circulating filtration system, and uses a hydraulic cylinder to drive the filter plate to lift and facilitate the removal of the workpiece.
It achieves efficient, stable and environmentally friendly rust removal of hardware parts, extends the service life of the rust removal fluid, reduces maintenance costs, and improves work efficiency and rust removal quality.
Smart Images

Figure CN224325418U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hardware processing, and in particular to a rust removal device for hardware processing. Background Technology
[0002] The main function of rust removal for hardware is to restore the surface properties of metal and extend the service life of workpieces. Rust can damage the structural strength of metal, affecting dimensional accuracy and assembly performance. Rust removal can remove the oxide layer (Fe2O3, etc.), restoring the electrical conductivity, thermal conductivity, and mechanical properties of the substrate. Simultaneously, a clean surface facilitates subsequent anti-corrosion treatments such as spraying and electroplating, improves coating adhesion, and prevents secondary corrosion. In hardware processing, rust removal can also reduce equipment wear (such as bearings and gears), ensure product appearance quality, meet export or high-end application rust prevention standards (such as salt spray testing for more than 72 hours), ultimately reducing scrap costs caused by rust and improving economic efficiency.
[0003] While existing technologies can achieve a certain degree of rust removal, they suffer from drawbacks such as the inability to repeatedly use pickling solutions, resulting in low-cost rust removal and energy waste. In view of this, we propose a rust removal device for hardware processing that solves the above problems. Utility Model Content
[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a rust removal device for hardware processing.
[0005] The technical solution of this utility model is as follows: A rust removal device for hardware processing includes a box, a filter, and a neutralizing agent storage tank. A mounting frame is provided on one side of the box, a conveyor belt is provided in the middle of the mounting frame, baffles are provided on both sides of the upper end of the conveyor belt, a filter is provided at the lower end of the box, the filter is connected to the box via a pipe, a filter plate is provided inside the box, a hydraulic cylinder is fixed at the lower end of the box, and a neutralizing agent storage tank is provided at the upper end of the box.
[0006] When using this device, the hardware parts that need rust removal can be placed on the top of the conveyor belt. The motor drives the conveyor belt to send the hardware parts into the chamber, which is filled with an acidic solution. By using a pH detector and adding a neutralizing agent, the pH is made to reach a suitable range for rust removal. Then, the water pump drives the water inside the chamber through transmission pipe one, transmission pipe two, and the filter before returning to the chamber. While ensuring flow, the water is purified to remove impurities. After rust removal is completed, the hydraulic cylinder can drive the filter plate to move up a certain distance, making it convenient for the user to remove the rust-removed hardware parts. This device has a self-cleaning rust removal effect and, with pH adaptive adjustment, achieves good rust removal results, making it highly practical.
[0007] Preferably, the mounting bracket is fixed to a base at its lower end, and the hydraulic cylinder is provided with a base plate at its lower end. The base enhances the stability of the device, and the hydraulic cylinder base plate distributes the force to prevent the equipment from tilting or shifting, thus ensuring safe operation.
[0008] Preferably, a controller is provided on one side of the outer wall of the tank, and a water outlet is provided at the lower end of the controller. The controller centrally manages the operation of the equipment, and the water outlet facilitates the discharge of waste liquid after multiple cycles of use, thereby improving the ease of operation and environmental friendliness.
[0009] Preferably, the upper end of the hydraulic cylinder is provided with a hydraulic rod, and the upper end of the hydraulic rod passes through the lower end of the box and is fixedly connected to the lower end of the filter plate. The passing part is designed with a sealing ring. The hydraulic rod precisely controls the lifting and lowering of the filter plate, and the sealing ring prevents liquid leakage, maintains the sealing of the box, and avoids the overflow of acidic solution.
[0010] Preferably, a transmission pipe is provided between the bottom side of the box and the filter, and a transmission pipe is provided between the filter and the upper side of the box. The two transmission pipes form a circulation path to ensure continuous flow and filtration of the rust removal liquid, maintain the cleanliness of the solution and the rust removal efficiency. The box is equipped with a pH detector and a control valve for the neutralizing agent storage tank to dynamically add neutralizing agent (Ca(OH)2) and stabilize the pH of the waste liquid at 6-8 before it is treated and reused by the filter.
[0011] Preferably, a fixing frame is fixed to the upper end of the box, the neutralizing agent storage tank is embedded in the upper end of the fixing frame, a control valve is provided at the lower end of the neutralizing agent storage tank, and a pH detector is provided at the lower end of the fixing frame. The fixing frame stabilizes the neutralizing agent storage tank, the control valve precisely adjusts the amount of neutralizing agent added, and the pH detector monitors the acidity and alkalinity in real time to achieve dynamic balance.
[0012] Preferably, a motor is provided on the outer wall of the mounting frame, and the output shaft of the motor is fixedly connected to the input end of the conveyor belt. The motor drives the conveyor belt to rotate at a constant speed, ensuring that the hardware parts enter the box smoothly in batches, thereby improving the degree of automation and the consistency of rust removal.
[0013] Preferably, a water pump is provided on one side of the outer wall of the filter, and the water pump is connected to the transmission pipe. The filter is equipped with alternating activated carbon and ion exchange resin. The water pump enhances the liquid circulation power, and the dual filtration of activated carbon and ion exchange resin effectively adsorbs impurities and metal ions, keeping the rust removal liquid pure.
[0014] Compared with existing technologies, the advantages of this utility model are:
[0015] This invention achieves automatic conveying of hardware parts through a conveyor belt, reducing manual operation; an acidic solution and pH adaptive adjustment system ensure efficient rust removal; a filter and water pump circulate and purify the rust removal solution, extending its service life; and a hydraulic cylinder drives the filter plate to lift, facilitating the removal of workpieces and improving work efficiency.
[0016] Based on the first beneficial effect, this device achieves efficient, stable, and environmentally friendly rust removal of hardware parts through the synergistic effect of an automated conveyor belt, pH adaptive adjustment, a circulating filtration system, and a hydraulically lifting filter plate. Its structural design balances functionality and safety, with leak-proof sealing rings and centralized controller management, significantly improving rust removal efficiency and quality. The multi-stage purification of the filter and the dynamic addition of neutralizing agents extend the solution's lifespan and reduce maintenance costs.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] Figure 1 This is a three-dimensional perspective view of the present invention from a first angle;
[0019] Figure 2 This is a two-dimensional perspective view of the present invention.
[0020] Figure 3 This is a top view of the present invention;
[0021] Figure 4 This is a schematic diagram showing the distribution of activated carbon and ion exchange resin in this invention.
[0022] Figure label:
[0023] 1. Housing; 2. Neutralizing agent storage tank; 3. Fixing frame; 4. Controller; 5. Water outlet; 6. Transmission pipe two; 7. Transmission pipe one; 8. Filter; 9. Water pump; 10. Base; 11. Mounting frame; 12. Conveyor belt; 13. Baffle; 14. pH detector; 15. Motor; 16. Hydraulic cylinder; 17. Filter plate; 18. Activated carbon; 19. Ion exchange resin. Detailed Implementation
[0024] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0028] Example 1
[0029] Please see Figures 1-4 As shown, this embodiment is a rust removal device for hardware processing, including a box 1, a filter 8 and a neutralizing agent storage tank 2. A mounting frame 11 is provided on one side of the box 1, a conveyor belt 12 is provided in the middle of the mounting frame 11, baffles 13 are provided on both sides of the upper end of the conveyor belt 12, a filter 8 is provided at the lower end of the box 1, the filter 8 is connected to the box 1 by a pipe, a filter plate 17 is provided inside the box 1, a hydraulic cylinder 16 is fixed at the lower end of the box 1, and a neutralizing agent storage tank 2 is provided at the upper end of the box 1.
[0030] When using this device, the hardware parts that need rust removal can be placed on the upper end of the conveyor belt 12. The motor 15 drives the conveyor belt 12 to send the hardware parts into the tank 1. The tank 1 is filled with an acidic solution. With the help of the pH detector 14 and the addition of a neutralizing agent, the pH can be adjusted to a suitable range for rust removal. Then, the water pump 9 will drive the water inside the tank 1 through the first transmission pipe 7, the second transmission pipe 6, and the filter 8 before returning to the tank 1. While ensuring flow, the water is purified to remove impurities. After rust removal is completed, the hydraulic cylinder 16 can drive the filter plate 17 to move up a certain distance, making it convenient for the user to remove the rust-removed hardware parts. This device has a self-cleaning rust removal effect and, with pH adaptive adjustment, achieves a good rust removal effect, making it highly practical.
[0031] Example 2
[0032] Please see Figures 1-4 As shown, this embodiment further includes, based on embodiment 1: a base 10 is fixed to the lower end of the mounting bracket 11, and a base plate is provided at the lower end of the hydraulic cylinder 16. The base 10 enhances the stability of the device, and the base plate of the hydraulic cylinder 16 distributes the force to prevent the equipment from tilting or shifting, thus ensuring safe operation.
[0033] A controller 4 is installed on one side of the outer wall of the housing 1. A water outlet 5 is provided at the lower end of the controller 4. The controller 4 centrally manages the operation of the equipment, and the water outlet 5 facilitates the discharge of waste liquid after multiple cycles, improving the ease of operation and environmental friendliness.
[0034] The upper end of the hydraulic cylinder 16 is equipped with a hydraulic rod, and the upper end of the hydraulic rod passes through the lower end of the housing 1 and is fixedly connected to the lower end of the filter plate 17. The passing part is designed with a sealing ring. The hydraulic rod precisely controls the lifting and lowering of the filter plate 17, and the sealing ring prevents liquid leakage, maintains the sealing of the housing 1, and avoids the overflow of acidic solution.
[0035] A transmission pipe 7 is provided between the bottom side of the box 1 and the filter 8. A transmission pipe 6 is provided between the filter 8 and the upper side of the box 1. The two transmission pipes form a circulation path to ensure continuous flow and filtration of the rust removal liquid, maintain the cleanliness of the solution and the rust removal efficiency. The box 1 is equipped with a pH detector and a control valve for the neutralizer storage tank 2 to dynamically add neutralizer (Ca(OH)2) to stabilize the pH of the waste liquid at 6-8 before it is treated and reused by the filter 8.
[0036] A mounting bracket 3 is fixed to the upper end of the housing 1. The neutralizing agent storage tank 2 is embedded in the upper end of the mounting bracket 3. A control valve is provided at the lower end of the neutralizing agent storage tank 2. A pH detector 14 is provided at the lower end of the mounting bracket 3. The mounting bracket 3 stabilizes the neutralizing agent storage tank 2. The control valve precisely adjusts the amount of neutralizing agent added. The pH detector 14 monitors the acidity and alkalinity in real time to achieve dynamic balance.
[0037] A motor 15 is provided on the outer wall of the mounting frame 11. The output shaft of the motor 15 is fixedly connected to the input end of the conveyor belt 12. The motor 15 drives the conveyor belt 12 to rotate at a uniform speed, ensuring that the hardware parts enter the box 1 smoothly in batches, thereby improving the degree of automation and the consistency of rust removal.
[0038] A water pump 9 is installed on one side of the outer wall of the filter 8. The water pump 9 is connected to the transmission pipe 6. The filter 8 contains alternating activated carbon 18 and ion exchange resin 19. The water pump 9 enhances the liquid circulation power. The dual filtration of activated carbon 18 and ion exchange resin 19 effectively adsorbs impurities and metal ions, keeping the rust removal liquid pure. Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A rust removal device for hardware processing, comprising a housing (1), a filter (8), and a neutralizing agent storage tank (2), characterized in that: The box (1) is provided with a mounting frame (11) on one side, a conveyor belt (12) is provided in the middle of the mounting frame (11), baffles (13) are provided on both sides of the upper end of the conveyor belt (12), a filter (8) is provided at the lower end of the box (1), the filter (8) is connected to the box (1) by a pipe, a filter plate (17) is provided inside the box (1), a hydraulic cylinder (16) is fixed at the lower end of the box (1), and a neutralizer storage tank (2) is provided at the upper end of the box (1).
2. The rust removal device for hardware processing according to claim 1, characterized in that: The mounting bracket (11) has a base (10) fixed at its lower end, and the hydraulic cylinder (16) has a base plate at its lower end.
3. The rust removal device for hardware processing according to claim 1, characterized in that: The outer wall of one side of the box (1) is provided with a controller (4), and the lower end of the controller (4) is provided with a water outlet (5).
4. The rust removal device for hardware processing according to claim 1, characterized in that: The upper end of the hydraulic cylinder (16) is provided with a hydraulic rod, and the upper end of the hydraulic rod passes through the lower end of the box (1) and is fixedly connected to the lower end of the filter plate (17). The passing part is designed with a sealing ring.
5. A rust removal device for hardware processing according to claim 1, characterized in that: A transmission pipe 1 (7) is provided between the bottom side of the box (1) and the filter (8), and a transmission pipe 2 (6) is provided between the filter (8) and the upper side of the box (1).
6. The rust removal device for hardware processing according to claim 2, characterized in that: The upper end of the box (1) is fixed with a fixing frame (3), the neutralizing agent storage tank (2) is embedded in the upper end of the fixing frame (3), the lower end of the neutralizing agent storage tank (2) is provided with a control valve, and the lower end of the fixing frame (3) is provided with a pH detector (14).
7. The rust removal device for hardware processing according to claim 1, characterized in that: The mounting bracket (11) has a motor (15) on its outer wall, and the output shaft of the motor (15) is fixedly connected to the input end of the conveyor belt (12).
8. A rust removal device for hardware processing according to claim 1, characterized in that: A water pump (9) is provided on one side of the outer wall of the filter (8). The water pump (9) is connected to the transmission pipe (6). The filter (8) is provided with alternating activated carbon (18) and ion exchange resin (19).