High-performance zinc plating passivation device

Abstract

High-performance zinc plating passivation apparatus. This relates to the field of zinc plating processing technology. It includes a tank containing passivation liquid, a trolley mounted above the tank with a pair of lifting ropes, each rope corresponding to one end of a workpiece; a pair of pushing mechanisms at the bottom of the tank, each mechanism including a pushing plate and a hydraulic cylinder, the hydraulic cylinder located on the outer side of the bottom of the tank, and the pushing plate located on the inner side of the bottom of the tank, the hydraulic cylinder driving the pushing plate to reciprocate vertically; the workpiece is placed on the pair of pushing plates, the displacement directions of the pair of pushing plates being opposite. This application improves the contact effect between the workpiece and the passivation liquid by pushing the workpiece with the pushing plates, thereby improving the passivation effect.

Description

Technical Field

[0001] This application relates to the field of galvanizing processing technology, specifically to a high-performance galvanizing passivation device. Background Technology

[0002] Zinc plating is a surface treatment technique that involves coating the surface of metals, alloys, or other materials with a layer of zinc for aesthetic purposes, rust prevention, and other functions. The main method used is hot-dip galvanizing. However, because zinc is a reactive metal, if proper post-treatment is not performed after zinc electroplating, the coating will quickly darken and white corrosion products will appear. In order to reduce the chemical activity of zinc, it is often passivated to form a chromate conversion film on the zinc layer surface to achieve the effect of corrosion protection.

[0003] Chinese patent document CN222499370U discloses a passivation tank for galvanizing, specifically disclosing a placement mesh tank and a sealing mesh plate. The placement mesh tank has a symmetrically shaped discharge port on its bottom surface, and a matching sealing mesh plate is installed outside the discharge port. The sealing mesh plates are hinged to the bottom surface of the placement mesh tank on one side. A rotating plate is rotatably connected to the bottom surface of the placement mesh tank, with both ends of the rotating plate corresponding to the sealing mesh plate. A threaded knob is threaded through the eccentric part of the rotating plate. A winch, in conjunction with a vertical plate, lifts and lowers the frame, facilitating the placement of the mesh tank into the passivation tank for passivation or removing it from the passivation tank. When the placement mesh tank is lifted, a receiving container is placed above the passivation tank to receive it. By loosening the threaded knob and rotating the rotating plate, the sealing mesh plate naturally opens under gravity, allowing the passivated workpiece in the placement mesh tank to fall out, thus facilitating material removal.

[0004] The aforementioned patent uses a mesh trough to hold the workpiece, which can improve the efficiency of putting the workpiece into and taking it out of the passivation tank. However, the contact area between the workpieces is relatively large, which means that the workpieces cannot fully contact the passivation liquid, thereby reducing the passivation effect. Utility Model Content

[0005] In order to overcome the problem of poor passivation effect caused by workpiece stacking in the prior art, this application provides a high-performance zinc plating passivation device.

[0006] This application adopts the following technical solution: a high-performance zinc plating passivation device, including a tank containing passivation liquid, a crane is provided above the tank, and a pair of lifting ropes are provided on the crane, with the pair of lifting ropes respectively and correspondingly sleeved on both ends of the workpiece;

[0007] The bottom of the trough is provided with a pair of pushing mechanisms. The pushing mechanism includes a pushing plate and a hydraulic cylinder. The hydraulic cylinder is located on the outer side of the bottom of the trough, and the pushing plate is located on the inner side of the bottom of the trough. The hydraulic cylinder is used to drive the pushing plate to reciprocate in the vertical direction.

[0008] The workpiece is placed on a pair of pusher plates, and the two pusher plates are displaced in opposite directions.

[0009] Optionally, the end of the hoisting rope is wound into a loop, the workpiece is threaded through the end of the hoisting rope, and the crane can lower or lift the hoisting rope and the workpiece.

[0010] Optionally, a pair of receiving grooves are provided on the inner wall of the trough, the distance between the pair of receiving grooves is the same as the distance between the pair of lifting ropes, the receiving grooves are U-shaped, and both ends of the receiving grooves are located at the top of the trough;

[0011] The receiving groove is provided with several magnets, which are used to attract the suspension rope, and the suspension rope can be accommodated in the receiving groove.

[0012] Optionally, the width of the receiving groove is greater than the width of the lifting rope.

[0013] Optionally, a sealing cover is provided on the inner side of the bottom of the tank, the pusher plate is located above the sealing cover, a sealing ring is provided on the top of the sealing cover, and the piston rod of the hydraulic cylinder passes through the sealing ring and is connected to the bottom of the pusher plate.

[0014] Optionally, the pusher plate is arc-shaped with a low middle and high ends, and the top of the pusher plate is provided with a plurality of push rods, which are spaced apart along the length of the pusher plate.

[0015] The lengths of some of the push rods are inconsistent, and the maximum height of the push rod is lower than the maximum height of the push plate.

[0016] Optionally, the bottom of the tank is provided with a gas supply pipe, and the outer wall of the sealing cover is provided with a jet pipe. The gas supply pipe is connected to the sealing cover and is used to supply gas to the inside of the sealing cover, and the jet pipe is connected to the sealing cover and is used to spray gas to the outside of the sealing cover.

[0017] Optionally, the jet pipe is provided with a one-way valve, the front end of the jet pipe is connected to the sealing cover, and the end of the jet pipe is bent upward.

[0018] Compared with the prior art, this application has the following advantages:

[0019] 1. The pusher plate can move back and forth in the vertical direction under the push of the hydraulic cylinder. In this way, the pusher plate can push the rod-shaped workpiece to turn over in the tank, thereby ensuring that each workpiece can be fully in contact with the passivation liquid, thus improving the passivation effect.

[0020] 2. By using the magnetic attraction of the lifting rope, the lifting rope is separated from the workpiece, preventing the rope from remaining in contact with the workpiece after it has been lowered into the tank, thus maximizing the contact area between the workpiece and the passivation solution. Attached Figure Description

[0021] Figure 1 This is a schematic perspective view of this application;

[0022] Figure 2 It is a schematic three-dimensional representation of the tank. Figure 1 ;

[0023] Figure 3 It is a schematic three-dimensional representation of the tank. Figure 2 ;

[0024] Figure 4 Cross-sectional view of the internal structure of the tank;

[0025] Figure 5 It is a schematic 3D diagram of a push-pull mechanism;

[0026] In the diagram: 1. Tank; 11. Receiving tank; 12. Magnet; 2. Crane; 20. Lifting rope; 3. Workpiece; 4. Pushing mechanism; 41. Pushing plate; 410. Push rod; 42. Hydraulic cylinder; 5. Sealing cover; 51. Sealing ring; 52. Air supply pipe; 53. Air jet pipe; 530. One-way valve. Detailed Implementation

[0027] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] like Figure 1-5As shown, the high-performance zinc plating passivation device includes a tank 1 containing passivation liquid, a traveling crane 2, lifting ropes 20, and a pushing mechanism 4. The traveling crane 2 is positioned above the tank 1, and a pair of lifting ropes 20 are mounted on it. The ends of the lifting ropes 20 are looped, and the workpiece 3 passes through the ends of the lifting ropes 20. Thus, the traveling crane 2 can lower or raise the workpiece 3 and transfer it by lowering or raising the lifting ropes 20. The pushing mechanism 4, located at the bottom of the tank 1, includes a pushing plate 41 and a hydraulic cylinder 42. The hydraulic cylinder 42 is installed on the outer side of the bottom of the tank 1, and the pushing plate 41 is installed on the inner side of the bottom of the tank 1. The hydraulic cylinder 42 drives the pushing plate 41 to reciprocate vertically, and the two pushing plates 41 move in opposite directions, allowing the workpiece 3 to rotate at different angles within the tank 1 under the action of the pushing plate 41. This improves the contact effect between the workpiece 3 and the passivation liquid, thereby enhancing the passivation effect.

[0029] The pusher plate 41 is arc-shaped, lower in the middle and higher at both ends, allowing the workpiece 3 to roll or move on it, thus preventing adjacent workpieces 3 from stacking and failing to contact the passivation liquid. The top of the pusher plate 41 is provided with several push rods 410, which are spaced apart along the length of the pusher plate 41, and the lengths of the push rods 410 are inconsistent. The maximum height of each push rod 410 is lower than the maximum height of the pusher plate 41. The arrangement of the push rods 410 improves the pushing and agitating effect of the pusher plate 41 on the workpiece 3, promoting the movement and tumbling of the workpiece 3, and ensuring that all parts of the workpiece 3 can fully contact the passivation liquid.

[0030] A pair of receiving grooves 11 are provided on the inner wall of the tank body 1. The distance between the pair of receiving grooves 11 is the same as the distance between the pair of lifting ropes 20. The receiving grooves 11 are U-shaped, and both ends of the receiving grooves 11 are located at the top of the tank body 1. Several magnets 12 are provided in the receiving grooves 11. The magnets 12 are used to attract the lifting ropes 20. When the crane 2 puts the workpiece 3 into the tank body 1, the lifting rope 20 can be accommodated in the receiving grooves 11 and attracted and fixed by the magnets 12. The width of the receiving grooves 11 is greater than the width of the lifting ropes 20, so as to ensure that the lifting ropes 20 can enter the receiving grooves 11 smoothly. Carbon steel wire can be used to make the lifting ropes 20, ensuring that the lifting ropes 20 can be attracted by the magnets 12 after moving to the vicinity of the receiving grooves 11. In this way, when the lifting ropes 20 are completely sucked into the receiving grooves 11, the lifting ropes 20 will not contact the workpiece 3. At this time, under the pushing action of the pusher plate 41, the workpiece 3 can contact the passivation liquid to the maximum extent. Meanwhile, after passivation is complete, the crane 2 raises the lifting rope 20, which can automatically separate from the magnet 12 and move out of the receiving groove 11. In this way, after the lifting rope 20 moves upward, it can collect the workpiece 3 and lift it upward, without the need for manual handling of the workpiece 3.

[0031] A sealing cover 5 is provided on the inner bottom of the tank 1. A pusher plate 41 is located above the sealing cover 5. A sealing ring 51 is provided on the top of the sealing cover 5. The sealing ring 51 can be a rubber sealing ring 51, which can effectively prevent passivating liquid from entering the interior of the sealing cover 5. The piston rod of the hydraulic cylinder 42 passes through the sealing ring 51 and connects to the bottom of the pusher plate 41. This ensures the normal movement of the pusher plate 41 and prevents passivating liquid leakage. A gas supply pipe 52 is provided at the bottom of the tank 1. The gas supply pipe 52 is used to supply gas into the sealing cover 5. A jet pipe 53 is provided on the outer wall of the sealing cover 5. The jet pipe 53 is connected to the sealing cover 5. A one-way valve 530 is provided on the jet pipe 53. The one-way valve 530 can ensure that the gas can only be sprayed from inside the sealing cover 5 to the outside, preventing the passivating liquid from flowing back. The front end of the jet pipe 53 is connected to the sealing cover 5, and the end is bent upward. This way, after the gas is sprayed out, it can disturb the passivating liquid around the workpiece 3, further improving the passivation effect of the workpiece 3.

[0032] The implementation principle of this embodiment is as follows: the workpiece 3 is lifted by the crane 2 and the hoisting rope 20 and placed into the tank 1 containing the passivation liquid. The hydraulic cylinder 42 in the pushing mechanism 4 drives the pushing plate 41 to move vertically in the opposite direction. The push rod 410 on the pushing plate 41 can push the workpiece 3 to roll and move, so that all parts of the workpiece 3 can fully contact the passivation liquid, thereby improving the passivation effect.

[0033] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A high-performance zinc plating passivation apparatus, comprising a tank (1) containing a passivation solution, characterized in that, A traveling crane (2) is provided above the tank (1), and a pair of lifting ropes (20) are provided on the traveling crane (2). The pair of lifting ropes (20) are respectively and correspondingly sleeved on both ends of the workpiece (3). The bottom of the tank (1) is provided with a pair of pushing mechanisms (4). The pushing mechanism (4) includes a pushing plate (41) and a hydraulic cylinder (42). The hydraulic cylinder (42) is located on the outer side of the bottom of the tank (1), and the pushing plate (41) is located on the inner side of the bottom of the tank (1). The hydraulic cylinder (42) is used to drive the pushing plate (41) to move back and forth in the vertical direction. The workpiece (3) is placed on a pair of pusher plates (41) with opposite displacement directions.

2. The high-performance zinc plating passivation device according to claim 1, characterized in that, The end of the hoisting rope (20) is wound into a loop, and the workpiece (3) is threaded through the end of the hoisting rope (20). The crane (2) can lower or lift the hoisting rope (20) and the workpiece (3).

3. The high-performance zinc plating passivation device according to claim 2, characterized in that, The inner wall of the trough (1) is provided with a pair of receiving grooves (11), the distance between the pair of receiving grooves (11) is the same as the distance between the pair of hanging ropes (20), the receiving grooves (11) are U-shaped, and both ends of the receiving grooves (11) are located at the top of the trough (1); The receiving groove (11) is provided with a plurality of magnets (12), which are used to attract the suspension rope (20), and the suspension rope (20) can be accommodated in the receiving groove (11).

4. The high-performance zinc plating passivation device according to claim 3, characterized in that, The width of the receiving groove (11) is greater than the width of the suspension rope (20).

5. The high-performance zinc plating passivation device according to claim 2, characterized in that, The bottom inner side of the trough (1) is provided with a sealing cover (5), the pusher plate (41) is located above the sealing cover (5), the top of the sealing cover (5) is provided with a sealing ring (51), and the piston rod of the hydraulic cylinder (42) passes through the sealing ring (51) and is connected to the bottom of the pusher plate (41).

6. The high-performance zinc plating passivation apparatus according to claim 5, characterized in that, The pusher plate (41) is an arc shape with a low middle and high ends. The top of the pusher plate (41) is provided with a plurality of push rods (410), and the plurality of push rods (410) are spaced apart along the length direction of the pusher plate (41). The lengths of some of the push rods (410) are inconsistent, and the maximum height of the push rod (410) is lower than the maximum height of the push plate (41).

7. The high-performance zinc plating passivation device according to claim 5, characterized in that, The bottom of the tank (1) is provided with a gas supply pipe (52), and the outer wall of the sealing cover (5) is provided with a jet pipe (53). The gas supply pipe (52) is connected to the sealing cover (5) and is used to supply gas to the inside of the sealing cover (5). The jet pipe (53) is connected to the sealing cover (5) and is used to spray gas to the outside of the sealing cover (5).

8. The high-performance zinc plating passivation apparatus according to claim 7, characterized in that, The jet pipe (53) is equipped with a one-way valve (530), the front end of the jet pipe (53) is connected to the sealing cover (5), and the end of the jet pipe (53) is bent upward.

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