A quick removal device for steel member surface passivation liquid

By designing a device that includes a hot water tank, a conveyor belt, and nozzles, the problem of low efficiency in traditional methods of removing passivation liquid from steel components has been solved, achieving efficient removal and waste liquid recycling, and avoiding secondary pollution.

CN224591026UActive Publication Date: 2026-08-04WUXI ZINC HUIFENG METAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
WUXI ZINC HUIFENG METAL TECHNOLOGY CO LTD
Filing Date
2025-07-10
Publication Date
2026-08-04

AI Technical Summary

Technical Problem

Traditional methods for removing passivation liquid from steel components are inefficient, labor-intensive, prone to leaving cleaning dead spots, and can cause secondary pollution due to waste liquid dripping.

Method used

A device comprising a hot water tank, a conveyor belt, nozzles, and a recycling pool was designed. The passivation solution is removed by spraying heated water through high-pressure nozzles, and the steel components are moved by the conveyor belt. Waste liquid is recycled through a guide port and a drain port to prevent dripping.

Benefits of technology

It improved cleaning efficiency, reduced cleaning dead spots, achieved effective recycling of waste liquid, avoided ground pollution, and reduced labor costs.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224591026U_ABST
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Abstract

This utility model belongs to the field of steel component technology, and in particular to a rapid removal device for passivation liquid on the surface of steel components. It includes a workbench, with a mounting frame fixedly connected to one side of the workbench surface. A mounting plate is fixedly connected to one side of the mounting frame surface. A motor is mounted on one end of the mounting plate, and a rotating shaft is connected to the output end of the motor. A drive roller is connected to one end of the rotating shaft. A driven rotating shaft is connected to one side inside the mounting frame, and a driven rotating roller is connected to one end of the driven rotating shaft. Through the cooperation of a hot water tank, water pipes, a conveyor belt, and nozzles, the hot water tank heats the water, and the heated water is sprayed onto the surface of the steel component through the nozzles to flush away the passivation liquid. This method is more efficient than manual removal and shortens working time. During the removal of the passivation liquid, the waste liquid mixed with water enters the interior of a recycling tank through a guide port and a drain port, preventing the waste liquid from dripping directly onto the ground and causing secondary pollution.
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Description

Technical Field

[0001] This utility model belongs to the field of steel component technology, specifically relating to a device for rapidly removing passivation liquid from the surface of steel components. Background Technology

[0002] Passivation solutions are solutions that passivate metal surfaces. They are generally used for post-plating treatment of zinc, cadmium, and other coatings. The purpose is to form a surface condition on the coating that prevents normal metal reactions, improving its corrosion resistance and enhancing the product's appearance. Formula analysis shows that commonly used passivation solutions mainly consist of chromic acid, nitric acid, and sulfuric acid. However, due to the environmental pollution caused by chromic acid, in some cases where a silvery-white or bluish-white color is required, the iridescent passivation film formed after tri-acid passivation can be further bleached with alkaline solution (white passivation), but this reduces the coating's corrosion resistance.

[0003] After the passivation of the steel component surface is completed, the passivation liquid on the surface of the steel component needs to be removed. If the passivation liquid remains on the surface of the steel component, it will shorten the service life of the steel component. The traditional removal methods are generally manual wiping and simple spraying. Manual wiping of steel components is relatively slow, takes a long time, has high labor costs, and may also create cleaning dead corners. Simple spraying cannot effectively recycle waste liquid, and waste liquid dripping on the ground can easily cause secondary pollution. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a rapid removal device for passivation liquid on the surface of steel components. This device solves the problems of slow efficiency, long working time, high labor costs, potential cleaning dead corners, inability of simple spraying to effectively recycle waste liquid, and the risk of secondary pollution caused by waste liquid dripping onto the ground.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid removal device for passivation liquid on the surface of steel components, comprising a workbench, an installation frame fixedly connected to one side of the workbench surface, an installation plate fixedly connected to one side of the installation frame surface, a motor mounted on one end of the installation plate, a rotating shaft connected to the output end of the motor, a drive roller connected to one end of the rotating shaft, a driven rotating shaft connected to one side of the inside of the installation frame, a driven rotating roller connected to one end of the driven rotating shaft, a conveyor belt provided on the surface of the drive roller, and the other end of the conveyor belt contacting the surface of the driven rotating roller, a connecting block connected to the top of the inner surface of the installation frame, a connecting pipe connected to one end of the connecting block, a high-pressure nozzle connected to one side of the inside of the connecting pipe, a hot water tank mounted on the top of the installation frame, water pipes connected to both sides of the inside of the hot water tank, and the other end of the water pipes penetrating the inside of the installation frame and connecting to one side of the inside of the connecting pipe.

[0006] Preferably, a water pump is installed on one side of the surface of the hot water tank, and a water pumping pipe is connected to one side of the top of the hot water tank.

[0007] Preferably, one side of the mounting frame is connected to multiple sets of support rollers, and the positions of the support rollers correspond to each other, with the surface of the support rollers in contact with the inner surface of the conveyor belt.

[0008] Preferably, the surface of the conveyor belt is provided with a guide port, and one side of the surface of the workbench is provided with a drain port, and the positions of the drain port and the guide port correspond to each other.

[0009] Preferably, support legs are fixedly connected to the four corners of the bottom of the workbench, one end of each support leg is connected to a recycling tank, a drain pipe is fixedly connected to one side of the inside of the recycling tank, and a valve is provided on one side of the surface of the drain pipe.

[0010] Preferably, a collection box is provided on the other side of the workbench surface, and multiple sets of placement hoppers are connected to the surface of the conveyor belt.

[0011] Preferably, an air knife is installed on the top of the inner surface of the mounting frame, and the number of high-pressure nozzles is seven, which are linearly arrayed and the positions of the air knife and the high-pressure nozzles correspond to each other.

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

[0013] By coordinating hot water tanks, water pipes, conveyor belts, and nozzles, the hot water tank heats the water, which is then sprayed onto the surface of the steel components through the nozzles to wash away the passivation solution. Simultaneously, the conveyor belt moves subsequent steel components, continuously removing the passivation solution from the steel component surfaces. This method is more efficient than manual cleaning, shortens working time, and reduces cleaning dead spots. During the removal of the passivation solution, the waste liquid, a mixture of water and passivation solution, enters the recycling tank through the guide port and drain port. The waste liquid is then discharged to the corresponding discharge location through the drain pipe, preventing the waste liquid from dripping directly onto the ground and causing secondary pollution. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the drain port of this utility model;

[0017] Figure 3 This is a schematic diagram of the conveyor belt of this utility model;

[0018] Figure 4 This is a cross-sectional view of the present invention;

[0019] Figure 5 This is a schematic diagram of the hot water tank of this utility model;

[0020] Figure 6 This is a cross-sectional view of the conveyor belt of this utility model.

[0021] In the diagram: 1. Workbench; 2. Recycling tank; 3. Mounting frame; 4. Hot water tank; 5. Mounting plate; 6. Pumping pipe; 7. Support leg; 8. Drain pipe; 9. Valve; 10. Drain outlet; 11. Collection box; 12. Guide port; 13. Placement hopper; 14. Rotating shaft; 15. Conveyor belt; 16. Motor; 17. Connecting block; 18. Air knife; 19. Water pipe; 20. High-pressure nozzle; 21. Connecting pipe; 22. Water pump; 23. Drive roller; 24. Drive shaft; 25. Support roller; 26. Drive roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides the following technical solution: a rapid removal device for passivation liquid on the surface of steel components, including a workbench 1, an installation frame 3 fixedly connected to one side of the surface of the workbench 1, an installation plate 5 fixedly connected to one side of the surface of the installation frame 3, a motor 16 installed at one end of the installation plate 5, a rotating shaft 14 connected to the output end of the motor 16, a drive roller 26 connected to one end of the rotating shaft 14, a driven shaft 24 connected to one side of the interior of the installation frame 3, a driven roller 23 connected to one end of the driven shaft 24, a conveyor belt 15 provided on the surface of the drive roller 26, and the other end of the conveyor belt 15 contacting the surface of the driven roller 23, a connecting block 17 connected to the top of the inner surface of the installation frame 3, a connecting pipe 21 connected to one end of the connecting block 17, a high-pressure nozzle 20 connected to one side of the interior of the connecting pipe 21, a hot water tank 4 installed on the top of the installation frame 3, water pipes 19 connected to both sides of the interior of the hot water tank 4, and the other end of the water pipes 19 penetrating the interior of the installation frame 3 and connecting to one side of the interior of the connecting pipe 21.

[0024] In this embodiment: by connecting the water pipe 4 to the water source, water can be continuously supplied to the inside of the hot water tank 4, so that the high-pressure nozzle 20 can continuously spray high-pressure water. In conjunction with the conveyor belt 15, the passivation liquid on the surface of the steel components can be removed without interruption, improving work efficiency, eliminating the need to stop the machine, and simplifying the operation process.

[0025] In this embodiment, the guide port 10, together with the drain port 12, guides the water used to rinse the steel components and the passivation liquid remaining on the surface of the steel components into the interior of the recovery tank 2, so as to avoid the waste liquid remaining on the surface of the workbench 1 or dripping onto the ground and causing secondary pollution, and facilitates the subsequent treatment of the waste liquid.

[0026] In this embodiment: turning valve 9 can quickly discharge the waste liquid inside the recycling tank 2 through drain pipe 8, making it convenient for staff to discharge the waste liquid after removing the passivation liquid to the corresponding location.

[0027] In this embodiment, the placement bucket 13 can restrict the position of the steel components, preventing them from detaching from the conveyor belt during the transmission and cleaning process.

[0028] In this embodiment, the air knife 18 blows hot air to quickly dry the steel components after removing the passivation liquid, making the steel components easier to use. The array distribution of multiple high-pressure nozzles 20 can also maximize the continuous rinsing of the steel components, reduce the need to clean the four corners, and improve the cleaning effect of the passivation liquid.

[0029] In this embodiment, the steel components after the passivation liquid has been removed are carried by the conveyor belt 15 to the inside of the collection box 11 for easy collection and temporary storage.

[0030] The working principle and usage process of this utility model are as follows: After the utility model is installed, the water pipe 6 is connected to the water source, and then the water pump 22 is started to draw water into the hot water tank 4. The hot water tank 4 heats the water inside, and the heated water enters the connecting pipe 21 through the water pipe 19 and is sprayed out through the high-pressure nozzle 20. The air knife 18 is started, and the motor 16 is started to drive the rotating shaft 14 to rotate, thereby driving the drive roller 26 to rotate. The drive roller 26 drives the conveyor belt 15 to move forward through friction, placing the steel structure that needs to be cleaned of passivation liquid into the placement shaft 13. The conveyor belt 15 will drive the steel structure to move steadily forward, and the steel structure will move to the high-pressure nozzle 20. When the steel component is directly below the 0, the high-pressure water jet from the high-pressure nozzle 20 cleans the passivation solution on the surface of the steel component. The water and passivation solution enter the interior of the recovery tank 2 through the guide port 12 and the drain port 10. The steel component continues to move forward, and the air knife 18 blows hot air to dry the steel component. Finally, the steel component is sent from the interior of the placement hopper 13 into the interior of the collection box 11. The valve 9 is turned, and the waste liquid collected in the recovery tank 2 is discharged through the drain pipe 8. The waste liquid is treated, and then the steel component with the passivation solution removed is collected. All electrical equipment in this device is powered by an external power supply, and all motors or electric push rods in this paper are controlled by a PLC control system.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 device for rapidly removing passivation liquid from the surface of steel components, comprising a workbench (1), characterized in that: A mounting frame (3) is fixedly connected to one side of the surface of the workbench (1), and a mounting plate (5) is fixedly connected to one side of the surface of the mounting frame (3). A motor (16) is mounted on one end of the mounting plate (5), and a rotating shaft (14) is connected to the output end of the motor (16). A drive roller (26) is connected to one end of the rotating shaft (14). A slave rotating shaft (24) is connected to one side inside the mounting frame (3), and a slave rotating roller (23) is connected to one end of the slave rotating shaft (24). A conveyor belt (15) is provided on the surface of the drive roller (26). The other end of the conveyor belt (15) is in contact with the surface of the rotating roller (23). A connecting block (17) is connected to the top of the inner surface of the mounting frame (3). One end of the connecting block (17) is connected to a connecting pipe (21). A high-pressure nozzle (20) is connected to one side inside the connecting pipe (21). A hot water tank (4) is installed on the top of the mounting frame (3). Water pipes (19) are connected to both sides inside the hot water tank (4). The other end of the water pipe (19) passes through the interior of the mounting frame (3) and is connected to one side inside the connecting pipe (21).

2. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: A water pump (22) is installed on one side of the surface of the hot water tank (4), and a water pumping pipe (6) is connected to one side of the top of the hot water tank (4).

3. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: Multiple sets of support rollers (25) are connected to one side inside the mounting frame (3), and the positions of the support rollers (25) correspond to each other. The surface of the support rollers (25) is in contact with the inner surface of the conveyor belt (15).

4. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: The surface of the conveyor belt (15) is provided with a guide port (12), and a drain port (10) is provided on one side of the surface of the workbench (1), and the positions of the drain port (10) and the guide port (12) correspond to each other.

5. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: The workbench (1) has four fixed support legs (7) at the bottom corners. One end of the support leg (7) is connected to a recycling tank (2). A drain pipe (8) is fixedly connected to one side inside the recycling tank (2). A valve (9) is provided on one side of the surface of the drain pipe (8).

6. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: A collection box (11) is provided on the other side of the surface of the workbench (1), and multiple sets of placement buckets (13) are connected to the surface of the conveyor belt (15).

7. The rapid removal device for passivation liquid on the surface of steel components according to claim 1, characterized in that: An air knife (18) is installed on the top of the inner surface of the mounting frame (3). There are seven sets of high-pressure nozzles (20), and the seven sets of high-pressure nozzles (20) are distributed in a linear array. The positions of the air knife (18) and the high-pressure nozzles (20) correspond to each other.