A rust removal device for mechanical part machining
Patent Information
- Application Number
- CN202521830121.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-27
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-08-27
AI Technical Summary
[0004]本实用新型公开一种机械零部件加工用除锈装置，旨在解决当机械零部件处于静态槽中时，工件表面的除锈剂会快速与锈层发生反应，生成氢气和各类杂质，若这些气泡附着在工件表面，会形成气屏蔽和耗尽层，致使该区域无法与药液接触，反应速度大幅降低，进而使工件表面药液浓度瞬间下降，最终造成局部除锈不足的技术问题
动态冲刷打破耗尽层：传统静态浸泡除锈时，除锈剂与金属表面的锈层发生化学反应后，在金属表面会逐渐形成一层停滞的耗尽层，这层耗尽层中除锈剂浓度极低，会严重阻碍新鲜的除锈剂与金属表面进一步接触，从而大大减缓了化学反应速率，导致除锈时间漫长，而本装置通过循环泵将除锈液以一定压力从喷淋板的喷头高速喷出，形成湍流，这种高速喷射的湍流能够强行冲散金属表面的耗尽层，时刻将高浓度的新鲜药液输送到金属表面，使化学反应始终以接近最高速率进行，大大缩短了处理时间，提高了生产效率；
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Figure CN224870174U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical parts processing technology, and in particular to a rust removal device for mechanical parts processing. Background Technology
[0002] Common rust removal methods include chemical rust removal, electrochemical rust removal, sandblasting rust removal, manual rust removal, and tumble finishing. Chemical rust removal, also known as etching or pickling, utilizes an acidic solution to react chemically with the rust layer on the metal surface, causing the rust layer to dissolve and peel off, thus removing it.
[0003] When mechanical parts are in a static tank, the rust remover on the workpiece surface will react quickly with the rust layer to generate hydrogen gas and various impurities. If these bubbles adhere to the workpiece surface, they will form a gas shield and depletion layer, preventing the area from contacting the solution and significantly reducing the reaction rate. This will cause the solution concentration on the workpiece surface to drop instantly, ultimately resulting in insufficient rust removal in certain areas. Utility Model Content
[0004] This utility model discloses a rust removal device for machining mechanical parts, which aims to solve the technical problem that when mechanical parts are in a static tank, the rust remover on the surface of the workpiece reacts quickly with the rust layer to generate hydrogen gas and various impurities. If these bubbles adhere to the surface of the workpiece, they will form a gas shield and a depletion layer, which will prevent the area from contacting the solution, greatly reduce the reaction rate, and cause the concentration of the solution on the workpiece surface to drop instantly, ultimately resulting in insufficient rust removal in certain areas.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A rust removal device for machining mechanical parts includes a rust removal tank and two filter boxes. The rust removal tank is located between the two filter boxes. The interior of the rust removal tank is equipped with a workpiece basket and two connecting pipes. A circulation pump and a water pump are installed on one outer wall of each of the two filter boxes. An installation pipe is provided at the inlet of the circulation pump, and a water outlet pipe is provided at the outlet of the water pump. One end of the water outlet pipe and one end of the installation pipe are respectively connected to the two connecting pipes. Two spray pipes are provided near the two sides on one of the connecting pipes. A spray plate is provided on the outer wall of the spray pipe. The interior of the spray plate is hollow. Several equally spaced nozzles are provided at the bottom of the spray plate. The spray plate is inclined downwards.
[0006] By adopting the above technical solution, the stagnant depletion layer can be forcibly dispersed by the turbulent energy of high-speed jetting, constantly delivering high-concentration fresh solution to the metal surface and carrying away reaction products, so that the chemical reaction always proceeds at near-maximum rate, thereby significantly shortening the processing time. Specifically, in the rust removal process, the mechanical parts to be rusted are first placed in the workpiece basket in the rust removal tank. The circulation pump is started, and the circulation pump draws the used rust removal solution from another connecting pipe through the installation pipe. The circulation pump uses the connecting pipe located at the bottom of the rust removal tank to draw the rust removal solution and deliver it to the filter box. The rust removal solution first passes through two layers of filter screens to filter out most of the impurities, and then enters the spray plate through the water outlet pipe. It is then sprayed out from the equally distributed nozzles at a certain pressure and flows back into the rust removal tank, realizing the recycling of the rust removal solution. During the circulation process, because the spray plate is set at an angle downwards, the sprayed rust removal solution can fully cover the mechanical parts in the workpiece basket, realizing the washing and dissolution of rust on the surface of the parts.
[0007] As a further embodiment of this utility model: the workpiece basket is a cylindrical structure, and the inner circumference of the workpiece basket is provided with several evenly distributed installation openings. The bottom inner wall and bottom outer wall of the workpiece basket are respectively provided with a guide plate and a limiting frame. The bottom outer wall of the rust removal tank is provided with a fixing box, and a motor is installed inside the fixing box. The output shaft of the motor passes through the bottom inner wall of the rust removal tank, and the output shaft of the motor is fixedly connected to the limiting frame.
[0008] By adopting the above technical solution, when in use, the motor is started, causing the motor output shaft to drive the limit frame and workpiece basket to start rotating. The motor speed is adjusted reasonably according to the material and degree of rust of the mechanical parts. When the predetermined rust removal time is reached, the motor is turned off, the rotation of the workpiece basket is stopped, the drain of the rust removal tank is opened, the used rust removal liquid is discharged, and the rust-removed mechanical parts are taken out for subsequent cleaning and drying. The design of the installation port and the conical guide plate promotes the flow and flushing effect of the rust removal liquid, accelerating the rust removal reaction. Compared with the traditional static immersion rust removal method, this device can greatly shorten the rust removal time and improve the rust removal efficiency.
[0009] In summary, this application includes at least one of the following beneficial technical effects: Dynamic flushing breaks the depletion layer: In traditional static immersion rust removal, after the rust remover reacts chemically with the rust layer on the metal surface, a stagnant depletion layer gradually forms on the metal surface. The concentration of rust remover in this depletion layer is extremely low, which seriously hinders the further contact of fresh rust remover with the metal surface, thus greatly slowing down the chemical reaction rate and resulting in a long rust removal time. However, this device uses a circulating pump to spray the rust remover at a certain pressure from the nozzles of the spray plate at high speed, forming turbulence. This high-speed jet of turbulence can forcibly break up the depletion layer on the metal surface, constantly delivering a high concentration of fresh solution to the metal surface, so that the chemical reaction always proceeds at a near-maximum rate, greatly shortening the processing time and improving production efficiency. The rotating workpiece basket enhances the rinsing effect: The motor in the device drives the workpiece basket to rotate, causing the mechanical parts placed inside to rotate as well. During the rotation, the various surfaces of the parts constantly change positions, allowing them to be rinsed from all directions by the high-speed rust-removing liquid sprayed from the spray plate. Compared to static immersion, where the rust-removing liquid can only naturally penetrate to the surface of the parts from above, the rotating workpiece basket allows the rust-removing liquid to rinse the parts from multiple angles, further accelerating the dissolution and removal of rust, thereby significantly improving the rust removal efficiency.
[0010] Other features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of a rust removal device for machining mechanical parts proposed in this utility model.
[0012] Figure 2 This is a schematic diagram of the workpiece basket structure of a rust removal device for machining mechanical parts proposed in this utility model.
[0013] Figure 3 This is a cross-sectional view of the guide plate structure of a rust removal device for machining mechanical parts proposed in this utility model.
[0014] Figure 4 This is a schematic diagram of the connecting pipe structure of a rust removal device for machining mechanical parts proposed in this utility model.
[0015] Figure 5 This is a schematic diagram of the filter screen structure of a rust removal device for machining mechanical parts proposed in this utility model.
[0016] In the attached diagram: 1. Rust removal tank; 2. Filter box; 4. Workpiece basket; 5. Connecting pipe; 6. Spray plate; 7. Spray head; 8. Mounting port; 9. Fixing box; 10. Limiting frame; 11. Guide plate; 12. Motor; 13. Connecting port; 14. Water outlet pipe; 15. Circulation pump; 16. Water pump; 17. Spray pipe; 18. Filter screen; 19. Water valve. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Reference Figure 1 , Figure 4 and Figure 5 A rust removal device for machining mechanical parts includes a rust removal tank 1 and two filter boxes 2. The rust removal tank 1 is located between the two filter boxes 2. The interior of the rust removal tank 1 is provided with a workpiece basket 4 and two connecting pipes 5. A circulation pump 15 and a water pump 16 are provided on one side of the outer wall of each of the two filter boxes 2. An installation pipe is provided at the inlet of the circulation pump 15, and an outlet pipe 14 is provided at the outlet of the water pump 16. One end of the outlet pipe 14 and one end of the installation pipe are respectively connected to the two connecting pipes 5. Two spray pipes 17 are provided on one of the connecting pipes 5 near both sides. A spray plate 6 is provided on the outer wall of the spray pipe 17. The interior of the spray plate 6 is hollow. Several nozzles 7 are evenly distributed at the bottom of the spray plate 6. The spray plate 6 is inclined downward.
[0019] Both connecting pipes 5 have a "U"-shaped structure. The "U"-shaped structure facilitates the thorough mixing of the rust remover inside the pipe. When the rust remover enters the connecting pipe 5 from different directions and converges, a relatively uniform mixing state can be formed in the "U"-shaped channel, avoiding excessive local concentration differences and ensuring that the composition and concentration of the rust remover that comes into contact with the surface of each mechanical part are consistent, thereby improving the overall rust removal quality.
[0020] It should be noted that the filter box 2 is equipped with two filter screens 18, which are arranged vertically in the vertical direction. The mesh area of the two filter screens 18 tends to decrease from bottom to top. This arrangement facilitates the initial filtration by the filter screen 18 with a larger mesh area at the bottom to remove larger impurity particles. Then, the filter screen 18 with a smaller mesh area at the top performs fine filtration to further remove tiny impurities.
[0021] It should be noted that one of the connecting pipes 5 is located on the bottom inner wall of the rust removal tank 1, and the other connecting pipe 5 is located in the middle area of the rust removal tank 1, and a connection port 13 is provided on the outer wall of one of the connecting pipes 5.
[0022] The circulation pump 15 is equipped with a water valve 19 at its outlet, and a fixed pipe is fixedly connected to the outlet of the circulation pump 15. One end of the fixed pipe extends into the interior of the filter box 2. The water flow rate of the circulation pump 15 can be controlled by the water valve 19 to adapt to different rust removal needs.
[0023] Specifically, during the rust removal process, the mechanical parts to be rusted are first placed in the workpiece basket 4 inside the rust removal tank 1. The circulation pump 15 is then started. The circulation pump 15 draws the used rust removal liquid from another connecting pipe 5 through the installation pipe. The circulation pump 15 uses the connecting pipe 5 located at the bottom of the rust removal tank 1 to draw the rust removal liquid and transport it to the filter box 2. The rust removal liquid first passes through two layers of filter screens 18 to filter out most of the impurities, and then enters the spray plate 6 through the water outlet pipe 14. It is then sprayed out from the equally distributed nozzles 7 at a certain pressure and flows back into the rust removal tank 1, realizing the recycling of the rust removal liquid. During the circulation process, because the spray plate 6 is set at an angle downwards, the sprayed rust removal liquid can fully cover the mechanical parts in the workpiece basket 4, realizing the washing and dissolution of the rust on the surface of the parts. This device uses the turbulent energy of high-speed jetting to forcibly disperse this stagnant depletion layer, constantly delivering a high concentration of fresh solution to the metal surface, while carrying away the reaction products, so that the chemical reaction always proceeds at a near-maximum rate, thereby significantly shortening the processing time.
[0024] Reference Figure 1 , Figure 2 and Figure 3 In a preferred embodiment, the workpiece basket 4 is a cylindrical structure. The inner circumference of the workpiece basket 4 is provided with a number of evenly distributed mounting holes 8. The bottom inner wall and bottom outer wall of the workpiece basket 4 are respectively provided with a guide plate 11 and a limiting frame 10. The bottom outer wall of the rust removal tank 1 is provided with a fixing box 9. The fixing box 9 is equipped with a motor 12. The output shaft of the motor 12 passes through the bottom inner wall of the rust removal tank 1, and the output shaft of the motor 12 is fixedly connected to the limiting frame 10.
[0025] Among them, the guide plate 11 has a conical structure. The unique shape of the conical guide plate 11 can guide the flow direction of the rust removal liquid in the rust removal tank 1. When the workpiece basket 4 rotates and drives the surrounding rust removal liquid to move, the conical guide plate 11 will cause the rust removal liquid to form an orderly vortex along its conical surface. This vortex has a stable flow path and a certain flow velocity, which can continuously flush the surface of mechanical parts. Compared with disordered flow, it can more effectively play the role of rust removal liquid.
[0026] Specifically, in use, the motor 12 is started, causing the output shaft of the motor 12 to drive the limit frame 10 and the workpiece basket 4 to start rotating. The speed of the motor 12 is adjusted reasonably according to the material and degree of rust of the mechanical parts. When the predetermined rust removal time is reached, the motor 12 is turned off to stop the rotation of the workpiece basket 4. The drain of the rust removal tank 1 is opened to drain the used rust removal liquid. The rust-removed mechanical parts are taken out for subsequent cleaning and drying. The design of the installation port 8 and the conical guide plate 11 promotes the flow and flushing effect of the rust removal liquid, accelerating the rust removal reaction. Compared with the traditional static immersion rust removal method, this device can greatly shorten the rust removal time and improve the rust removal efficiency.
[0027] Working principle: During use, in the rust removal process, the mechanical parts to be rusted are first placed in the workpiece basket 4 in the rust removal tank 1. The circulation pump 15 is started. The circulation pump 15 draws the used rust removal liquid from another connecting pipe 5 through the installation pipe. The circulation pump 15 uses the connecting pipe 5 located at the bottom of the rust removal tank 1 to draw the rust removal liquid and deliver it to the filter box 2. The rust removal liquid first passes through two layers of filter screens 18 to filter out most of the impurities, and then enters the spray plate 6 through the water outlet pipe 14. Then it is sprayed out from the equally distributed nozzles 7 at a certain pressure and flows back into the rust removal tank 1, realizing the recycling of the rust removal liquid. During the circulation process, because the spray plate 6 is set at an angle downward, the sprayed rust removal liquid can fully cover the mechanical parts in the workpiece basket 4, realizing the washing and dissolution of the rust on the surface of the parts.
[0028] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A rust removal device for machining mechanical parts, comprising a rust removal tank (1) and two filter boxes (2), characterized in that, The derusting tank (1) is located between the two filter boxes (2). A workpiece basket (4) and two connecting pipes (5) are arranged inside the derusting tank (1). A circulating pump (15) and a water suction pump (16) are arranged on the outer wall of one side of each of the two filter boxes (2). A mounting pipe is arranged at the water inlet of the circulating pump (15), and a water outlet pipe (14) is arranged at the water outlet of the water suction pump (16). One end of the water outlet pipe (14) and one end of the mounting pipe are respectively communicated with the two connecting pipes (5). Two spray pipes (17) are arranged on one of the connecting pipes (5) at positions close to both sides. A spray plate (6) is arranged on the outer wall of the spray pipe (17). The interior of the spray plate (6) is of a hollow structure. A plurality of nozzles (7) distributed at equal intervals are arranged at the bottom of the spray plate (6), and the spray plate (6) is arranged to be inclined downward.
2. The rust removal device for machining mechanical parts according to claim 1, characterized in that, Both of the two connecting pipes (5) are of a square-shaped structure.
3. The rust removal device for machining mechanical parts according to claim 2, characterized in that, Two filter screens (18) are arranged inside the filter box (2). The two filter screens (18) are distributed in a vertical direction from top to bottom, and the mesh area of the two filter screens (18) tends to decrease from bottom to top.
4. A rust removal device for machining mechanical parts according to claim 3, characterized in that, One of the connecting pipes (5) is located on the inner wall of the bottom of the derusting tank (1), the other connecting pipe (5) is located in the middle area of the derusting tank (1), and a connecting port (13) is opened on the outer wall of one of the connecting pipes (5).
5. A rust removal device for machining mechanical parts according to claim 4, characterized in that, A water valve (19) is arranged at the water outlet of the circulating pump (15). A fixed pipe is fixedly connected to the water outlet of the circulating pump (15), and one end of the fixed pipe extends into the interior of the filter box (2).
6. A rust removal device for machining mechanical parts according to claim 1, characterized in that, The workpiece basket (4) is of a cylindrical structure. A plurality of uniformly distributed mounting ports (8) are opened on the circumferential inner wall of the workpiece basket (4). A guide plate (11) and a limiting frame (10) are respectively arranged on the inner bottom wall and the outer bottom wall of the workpiece basket (4). A fixed box (9) is arranged on the outer wall of the bottom of the derusting tank (1). A motor (12) is installed inside the fixed box (9). The output shaft of the motor (12) penetrates through the inner wall of the bottom of the derusting tank (1), and the output shaft of the motor (12) is fixedly connected with the limiting frame (10).
7. A rust removal device for machining mechanical parts according to claim 6, characterized in that, The guide plate (11) is of a conical structure.