A device for removing rust from the surface of a metal workpiece

Abstract

The utility model relates to metal processing technical field, concretely is a kind of metalwork surface derusting device, including pickling tank and the blow-off pipe being communicated at the lower edge of the front end of pickling tank, the upper edge of both sides wall of pickling tank is uniformly set with square block by telescopic mechanism lifting, the upper side of two square blocks is uniformly elastically connected with connecting block by elastic mechanism, the corresponding one end of two connecting blocks is uniformly fixedly connected with U-shaped rod, the lower end of two U-shaped rods is commonly fixedly connected with filter screen, the periphery of filter screen is set on the inner wall of pickling tank. Small batch metalwork is pickled and derusted, metalwork not only is soaked in acid liquor and is on filter screen, and filter screen will be constantly up and down small amplitude in pickling tank, so that metalwork also generates small amplitude shaking, further enables metalwork to be in contact with acid liquor sufficiently, improves the derusting efficiency and derusting effect of metalwork.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, specifically to a rust removal device for the surface of metal parts. Background Technology

[0002] Rust removal from metal parts is mainly divided into three categories: physical rust removal, chemical rust removal, and electrochemical rust removal. Among them, chemical rust removal uses acids, alkalis, or chelating agents to react chemically with the rust layer (mainly iron oxide), dissolving it or converting it into a substance that is easy to detach. This method is suitable for removing rust from complex structures or hidden parts.

[0003] For small batches or small quantities of metal parts, the acid solution is placed inside a box for chemical rust removal. The metal parts are then placed inside the box and left to stand, allowing the acid solution to continuously react with the rust on the surface of the metal parts. Once the rust is removed, the metal parts can be taken out.

[0004] However, when the above operations are performed manually, tools are often needed to remove the metal parts from the box. Acid residue or drips are easily left behind, and if the tools are not handled carefully, the acid may splash onto the skin or clothing, causing chemical burns. Accidental collisions between the tools and the box or workpieces may cause acid spillage, expanding the area of ​​contact risk. Furthermore, the reaction between stationary metal parts and acid is slow, affecting rust removal efficiency. Therefore, we propose a rust removal device for metal parts. Utility Model Content

[0005] The purpose of this invention is to provide a rust removal device for metal parts to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rust removal device for metal parts, comprising an acid pickling tank and a drain pipe connected to the lower edge of the front end of the acid pickling tank. Square blocks are raised and lowered at the upper edges of both side walls of the acid pickling tank via a telescopic mechanism. Connecting blocks are elastically connected above the two square blocks via an elastic mechanism. A U-shaped rod is fixedly connected to one corresponding end of each connecting block. A filter screen is fixedly connected to the lower ends of the two U-shaped rods. The filter screen is fitted around the inner wall of the acid pickling tank. A connecting rod is rotatably connected between the two connecting blocks and the two square blocks via a driving mechanism. Cams are fixedly fitted onto the outer walls of the connecting rods corresponding to the two connecting blocks.

[0007] Preferably, the telescopic mechanism includes a fixed block, which is fixedly connected to the lower edge of the side wall of the pickling tank. An electric push rod is fixedly installed at the upper end of the fixed block, and the telescopic shaft end of the electric push rod is fixedly connected to the lower end of the square block.

[0008] Preferably, the elastic mechanism includes two support rods, which are symmetrically fixedly connected to the lower end of the connecting block. Both support rods movably pass through the lower end of the square block. Springs are slidably sleeved on the outer walls of both support rods, and both springs are fixedly connected between the square block and the connecting block.

[0009] Preferably, the driving mechanism includes an L-shaped plate, which is fixedly connected to one end of one of the square blocks. A motor is fixedly installed on the upper end of the L-shaped plate, and the output shaft end of the motor is fixedly connected to one end of the connecting rod.

[0010] Preferably, one end of the other square block is fixedly connected to an L-shaped block, and the vertical wall of the L-shaped block is rotatably connected to the end of the connecting rod away from the motor.

[0011] Preferably, a liquid level line is provided on the inner wall of the pickling tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. When pickling and removing rust from small batches of metal parts, the metal parts are not only immersed in the acid solution but also placed on a filter screen. The filter screen will continuously shake up and down slightly in the pickling tank, which will also cause the metal parts to shake slightly. This allows the metal parts to fully contact the acid solution, improving the rust removal efficiency and effect.

[0014] 2. After the rust removal of the metal parts is completed, the filter screen and the metal parts can automatically move upward together until the height of the filter screen and the metal parts exceeds the liquid level line. At this time, the acid adhering to the surface of the metal parts can drip into the pickling tank. The metal parts can be removed after being allowed to air dry naturally or dried with the help of a blower. This avoids acid residue or dripping onto the ground, minimizes personnel contact with acid, and improves safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the filter screen of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure between the connecting block and the square block of this utility model, and the motor.

[0018] Figure 4 This is a schematic diagram of the structure between the L-shaped block and the motor of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Pickling tank; 2. Liquid level line; 3. Filter screen; 4. Connecting block; 5. U-shaped rod; 6. Drain pipe; 7. Fixing block; 8. Electric push rod; 9. Motor; 10. L-shaped plate; 11. Cam; 12. Connecting rod; 13. L-shaped block; 14. Square block; 15. Support rod; 16. Spring. Detailed Implementation

[0021] 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.

[0022] This utility model provides a technical solution: such as Figure 1 - Figure 4 The device for removing rust from the surface of metal parts shown includes a pickling tank 1 and a drain pipe 6 connected to the lower edge of the front end of the pickling tank 1. Square blocks 14 are raised and lowered at the upper edges of both sides of the pickling tank 1 via a telescopic mechanism. Connecting blocks 4 are elastically connected above the two square blocks 14 via an elastic mechanism. U-shaped rods 5 are fixedly connected to the corresponding ends of the two connecting blocks 4. Filter screens 3 are fixedly connected to the lower ends of the two U-shaped rods 5. The filter screens 3 are fitted around the inner wall of the pickling tank 1. Connecting rods 12 are rotatably connected between the two connecting blocks 4 and the two square blocks 14 via a drive mechanism. Cams 11 are fixedly fitted on the outer walls of the connecting rods 12 at the corresponding positions of the two connecting blocks 4.

[0023] The telescopic mechanism includes a fixed block 7, which is fixedly connected to the lower edge of the side wall of the pickling tank 1. An electric push rod 8 is fixedly installed on the upper end of the fixed block 7, and the telescopic shaft end of the electric push rod 8 is fixedly connected to the lower end of the square block 14.

[0024] The elastic mechanism includes two support rods 15, which are symmetrically fixedly connected to the lower end of the connecting block 4. Both support rods 15 are movably inserted through the lower end of the square block 14. Springs 16 are slidably sleeved on the outer wall of both support rods 15, and both springs 16 are fixedly connected between the square block 14 and the connecting block 4.

[0025] The drive mechanism includes an L-shaped plate 10, which is fixedly connected to one end of a square block 14. A motor 9 is fixedly mounted on the upper end of the L-shaped plate 10, and the output shaft end of the motor 9 is fixedly connected to one end of the connecting rod 12.

[0026] Another square block 14 has an L-shaped block 13 fixedly connected to one end. The vertical wall of the L-shaped block 13 is rotatably connected to the end of the connecting rod 12 away from the motor 9. Specifically, by setting the L-shaped block 13, the stability of the connecting rod 12 when rotating is improved, and the connecting rod 12 is further supported.

[0027] A liquid level line 2 is provided on the inner wall of the pickling tank 1.

[0028] Working principle: When removing rust from metal parts, the pickling tank 1 is filled with acid, and the acid level does not exceed the liquid level line 2. A small amount of metal parts is then slowly placed inside the pickling tank 1, where they are positioned on the filter screen 3. At this time, the motor 9 is started, causing the connecting rod 12 to rotate. The rotation of the connecting rod 12 causes the two cams 11 to rotate as well. Each time the cam 11 rotates once, its protrusion pushes upward against the lower end face of the corresponding connecting block 4. This causes the connecting block 4 to rotate along with the two supports. The support rod 15 slides upward within the corresponding square block 14, and also stretches the two corresponding springs 16. When the protrusion rotates away from the lower end face of the connecting block 4, the connecting block 4 will move downward rapidly under the reaction force of the spring 16, and so on. Since both connecting blocks 4 are connected to the filter screen 3 through the U-shaped rod 5, the filter screen 3 will continuously shake up and down slightly in the pickling tank 1, thereby causing the metal parts to shake slightly as well, so that the metal parts can fully contact the acid solution, improving the rust removal efficiency and rust removal effect of the metal parts.

[0029] After the metal parts have been derusted, activate the two electric push rods 8. Each of the two electric push rods 8 pushes its connected square block 14 upward. The upward movement of the two square blocks 14 will cause the spring 16, support rod 15, cam 11, connecting block 4, connecting rod 12, and motor 9 to move upward together. This will cause the filter screen 3 and the metal parts to move upward together until the height of the filter screen 3 and the metal parts exceeds the liquid level line 2. At this time, the acid adhering to the surface of the metal parts can drip into the pickling tank 1. The metal parts can then be removed after being allowed to air dry naturally or dried with a fan. This avoids acid residue or dripping onto the ground, minimizes personnel contact with acid, and improves safety.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rust removal device for metal parts, comprising a pickling tank (1) and a drain pipe (6) connected to the lower edge of the front end of the pickling tank (1), characterized in that: Square blocks (14) are raised and lowered at the upper edges of both sides of the pickling tank (1) by means of a telescopic mechanism. Connecting blocks (4) are elastically connected above the two square blocks (14) by means of an elastic mechanism. U-shaped rods (5) are fixedly connected to the corresponding ends of the two connecting blocks (4). Filter screens (3) are fixedly connected to the lower ends of the two U-shaped rods (5). The filter screens (3) are fitted around the inner wall of the pickling tank (1). Connecting rods (12) are rotatably connected between the two connecting blocks (4) and the two square blocks (14) by means of a drive mechanism. Cams (11) are fixedly fitted on the outer walls of the connecting rods (12) at the locations of the two connecting blocks (4).

2. The rust removal device for metal parts according to claim 1, characterized in that: The telescopic mechanism includes a fixed block (7), which is fixedly connected to the lower edge of the side wall of the pickling tank (1). An electric push rod (8) is fixedly installed on the upper end of the fixed block (7), and the telescopic shaft end of the electric push rod (8) is fixedly connected to the lower end of the square block (14).

3. The rust removal device for metal parts according to claim 1, characterized in that: The elastic mechanism includes two support rods (15), which are symmetrically fixedly connected to the lower end of the connecting block (4). Both support rods (15) are movably inserted through the lower end of the square block (14). Springs (16) are slidably sleeved on the outer wall of both support rods (15), and both springs (16) are fixedly connected between the square block (14) and the connecting block (4).

4. The rust removal device for metal parts according to claim 1, characterized in that: The driving mechanism includes an L-shaped plate (10), which is fixedly connected to one end of a square block (14). A motor (9) is fixedly installed on the upper end of the L-shaped plate (10), and the output shaft end of the motor (9) is fixedly connected to one end of the connecting rod (12).

5. A rust removal device for metal parts according to claim 4, characterized in that: Another square block (14) has an L-shaped block (13) fixedly connected to one end. The vertical wall of the L-shaped block (13) is rotatably connected to the end of the connecting rod (12) away from the motor (9).

6. The rust removal device for metal parts according to claim 1, characterized in that: A liquid level line (2) is provided on the inner wall of the pickling tank (1).

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