White passivation protective agent spraying device based on iron part galvanization
By controlling the rotation of the bidirectional lead screw and the guide locking mechanism with a drive motor, the problem of uneven galvanizing spraying of traditional iron parts is solved, realizing automated spraying, improving production efficiency and spraying uniformity, and reducing operation difficulty and downtime.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO JIJU SURFACE TREATMENT TECH CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-05-01
AI Technical Summary
In traditional post-galvanizing treatment of iron parts, uneven spraying of white passivation agent affects corrosion resistance and service life. Furthermore, manually adjusting the nozzle position is inefficient, and frequent shutdowns increase production costs.
The system uses a drive motor to control the rotation of a bidirectional lead screw, automatically adjusting the nozzle distance. Combined with a guiding mechanism and a locking mechanism, it achieves precise spraying of iron parts of different sizes and types, reducing downtime and improving production efficiency.
It enables automated spraying of iron parts of different sizes and types, improving spray uniformity and production efficiency, reducing operation difficulty and downtime, and enhancing the overall production line efficiency.
Smart Images

Figure CN224186274U_ABST
Abstract
Description
A white passivation protective agent spraying device based on galvanized iron parts Technical Field
[0001] This utility model relates to the field of spraying protective agents for galvanized iron parts, specifically a white passivation protective agent spraying device based on galvanized iron parts. Background Technology
[0002] As is well known, in the traditional post-galvanizing process of iron parts, the spraying of white passivation agent on iron parts of different sizes or types usually requires manual adjustment of the spray nozzle position. This method is not only inefficient, but also makes it difficult to ensure that each adjustment is precisely adapted to the specific requirements of the iron parts, resulting in uneven spraying. Due to the precision limitations of manual adjustment, it is difficult to ensure that each iron part surface receives a consistent and sufficient white passivation agent coverage, which directly affects the corrosion resistance and service life of the product. For production lines, frequent shutdowns to manually adjust the spray nozzle position significantly reduce overall production efficiency and increase production costs. Traditional equipment lacks sufficient flexibility to quickly adapt to the processing needs of iron parts of different specifications, which is a challenge for enterprises that need to process iron parts of various types and sizes. Therefore, it is necessary to propose a solution to this technical problem. Summary of the Invention
[0003] To address the shortcomings of existing technologies, this utility model provides a white passivation protective agent spraying device based on galvanizing of iron parts.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a white passivation protective agent spraying device based on galvanized iron parts, comprising a workbench with a roller conveyor belt, a mounting box at the top of the workbench, a spraying trough on the mounting box, a conveying pipe at the top of the mounting box, a bidirectional lead screw on the spraying trough, a bearing seat between one end of the bidirectional lead screw and the mounting box, a drive motor between the other end of the bidirectional lead screw and the mounting box, adjusting blocks between both ends of the bidirectional lead screw and the spraying trough, a guiding mechanism between the spraying trough and the two adjusting blocks, and an adjusting mechanism between the adjusting blocks and the conveying pipe. The adjusting mechanism includes a transmission chamber and an adjusting nozzle. The transmission chamber is located inside the mounting box, and a flexible hose is provided on the transmission chamber. One end of the flexible hose is connected to the adjusting nozzle, and the other end of the flexible hose is connected to the conveying pipe. A locking mechanism is provided between the bidirectional lead screw and the mounting box.
[0005] Furthermore, the present invention is improved in that the locking mechanism includes a locking groove and a telescopic mechanism. The locking groove is opened at the top of the mounting box, and a drive gear is provided between the locking groove and the bidirectional lead screw. The telescopic mechanism is installed at the top of the mounting box, and a toothed block is provided between the output end of the telescopic mechanism and the locking groove. The toothed block meshes with the drive gear.
[0006] Furthermore, the present invention is improved in that the guiding mechanism includes a guide groove and a slide bar. The guide groove is formed at the top of the two adjusting blocks, and the slide bar is installed at the top of the spraying groove and passes through the guide groove.
[0007] Furthermore, the present invention is improved in that both the guide groove and the slide bar are T-shaped.
[0008] Furthermore, the present invention is improved by providing a fixed nozzle between the top of the spraying trough and the delivery pipe.
[0009] Furthermore, an improvement of this utility model is that the telescopic mechanism is an electric telescopic rod.
[0010] Furthermore, an improvement of this utility model is that the drive motor is a servo motor.
[0011] Furthermore, the present invention is improved by providing a lighting mechanism at the top of the spraying trough.
[0012] Compared with the prior art, this utility model provides a white passivation protective agent spraying device based on galvanizing of iron parts, which has the following beneficial effects:
[0013] This white passivation protective agent spraying device for galvanized iron parts uses a drive motor to control the rotation of a bidirectional lead screw, enabling two adjusting blocks to move linearly in opposite directions. This allows for automatic adjustment of the distance between spray nozzles when spraying white passivation protective agents on iron parts of different sizes and types, greatly improving the equipment's adaptability. It eliminates the need for manual adjustment, saving significant time. Compared to traditional manual adjustment methods, this invention allows for rapid adjustment of the nozzle spacing through simple forward and reverse motor control, significantly reducing downtime caused by equipment adjustments and substantially improving the overall efficiency of the production line. The application of a guiding mechanism allows the adjusting blocks to slide more smoothly along a straight line, further optimizing the operational experience and reducing operational difficulty. Attached Figure Description
[0014] Figure 1 is a schematic diagram of the structure of this utility model;
[0015] Figure 2 is a schematic diagram of the structure of this utility model;
[0016] Figure 3 is an enlarged front half-sectional view of the bidirectional lead screw in Figure 1 of this utility model;
[0017] Figure 4 is an enlarged half-sectional view of the conveying pipe in Figure 1 of this utility model.
[0018] In the diagram: 1. Workbench; 2. Roller conveyor belt; 3. Mounting box; 4. Conveying pipe; 5. Two-way lead screw; 6. Bearing seat; 7. Drive motor; 8. Adjusting block; 9. Adjusting nozzle; 10. Hose; 11. Telescopic mechanism; 12. Drive gear; 13. Tooth block; 14. Sliding bar; 15. Fixed nozzle; 16. Lighting mechanism. Detailed Implementation
[0019] 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.
[0020] Please refer to Figures 1-4. This utility model is a white passivation protective agent spraying device based on galvanized iron parts, including a workbench 1, a roller conveyor belt 2 on the workbench 1, a mounting box 3 at the top of the workbench 1, a spraying groove on the mounting box 3, a conveying pipe 4 at the top of the mounting box 3, a bidirectional lead screw 5 on the spraying groove, a bearing seat 6 between one end of the bidirectional lead screw 5 and the mounting box 3, and a drive motor 7 between the other end of the bidirectional lead screw 5 and the mounting box 3. The two ends of the bidirectional lead screw 5 are connected to the spraying groove. An adjusting block 8 is provided between the spray trough and the two adjusting blocks 8. A guiding mechanism is provided between the adjusting block 8 and the conveying pipe 4. The adjusting mechanism includes a transmission chamber and an adjusting nozzle 9. The transmission chamber is located inside the mounting box 3. A flexible hose 10 is provided on the transmission chamber. One end of the flexible hose 10 is connected to the adjusting nozzle 9, and the other end of the flexible hose 10 is connected to the conveying pipe 4. A locking mechanism is provided between the bidirectional lead screw 5 and the mounting box 3. In this embodiment, the galvanized iron parts can be conveyed by the roller conveyor belt 2. Then, by connecting the conveying pipe 4 to the equipment pipeline supplying the white passivation protective agent liquid, the white passivation protective agent liquid is sprayed through the adjusting nozzles 9 of the two adjusting blocks 8, thereby enabling the white passivation protective agent spraying operation on the iron parts passing through the spraying tank. When spraying iron parts of different sizes or types, it is necessary to adjust the position of the adjusting nozzles 9 to facilitate sufficient spraying. At this time, by using the locking mechanism to contact and lock the bidirectional screw 5, the output end of the drive motor 7 is controlled to rotate the bidirectional screw 5. The bidirectional screw 5 rotates stably through the bearing seat 6, and the two adjusting blocks 8 can move linearly in opposite directions through the bidirectional screw 5. The guiding mechanism can further enable the adjusting blocks 8 to slide linearly. By controlling the forward and reverse rotation of the drive motor 7, the distance between the two adjusting nozzles 9 can be adjusted to move closer or further apart, so as to adjust the position of the adjusting nozzles 9 according to the different sizes and types of iron parts, thereby achieving better white passivation protective agent spraying operation. After adjusting to the designated position, the locking mechanism can lock the bidirectional screw 5, thereby fixing the position of the adjusting block 8, reducing the displacement of the adjusting nozzles 9, and ensuring the stability of the spraying operation.
[0021] In this design, the locking mechanism includes a locking groove and a telescopic mechanism 11. The locking groove is located at the top of the mounting box 3. A drive gear 12 is provided between the locking groove and the bidirectional lead screw 5. The telescopic mechanism 11 is mounted at the top of the mounting box 3. A toothed block 13 is provided between the output end of the telescopic mechanism 11 and the locking groove. The toothed block 13 meshes with the drive gear 12. By controlling the output end of the telescopic mechanism 11 to move the toothed block 13 linearly, the toothed block 13 moves downward in the locking groove, allowing it to mesh with the drive gear 12, thus locking the drive gear 12. By locking the bidirectional lead screw 5, the positions of the two adjusting blocks 8 are locked to prevent displacement or shaking. When it is necessary to move the positions of the two adjusting blocks 8, by controlling the output end of the mechanism to move the toothed block 13 linearly upward, the toothed block 13 disengages from the drive gear 12, quickly releasing the locking state. This facilitates the control of the drive motor 7 to rotate the bidirectional lead screw 5 to adjust the position of the adjusting blocks 8.
[0022] In this solution, the guiding mechanism includes a guide groove and a slide bar 14. The guide groove is opened at the top of the two adjusting blocks 8, and the slide bar 14 is installed at the top of the spraying groove. The slide bar 14 passes through the guide groove. By passing through the guide groove of the adjusting block 8, the adjusting block 8 can move more stably in a straight horizontal direction on the bidirectional lead screw 5.
[0023] In this design, both the guide groove and the slide bar 14 are T-shaped. The T-shaped guide groove and slide bar 14 can further improve the linear movement stability of the adjusting block 8.
[0024] In this solution, a fixed nozzle 15 is provided between the top of the spraying tank and the conveying pipe. By positioning the fixed nozzle 15 at the top of the spraying tank, the workpiece can be sprayed more effectively.
[0025] In this solution, the telescopic mechanism 11 is an electric telescopic rod, which has the characteristics of high movement accuracy, thereby improving the lifting and lowering movement accuracy and stability of the tooth block 13.
[0026] In this scheme, the drive motor 7 is a servo motor, which has the characteristic of high rotational accuracy, thereby improving the rotational accuracy of the bidirectional lead screw 5.
[0027] In this solution, the top of the spray tank is equipped with a lighting mechanism 16, which can illuminate the workbench 1, making it easier for personnel to observe the spraying status of the white passivation protective agent for galvanizing iron parts.
[0028] 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 white passivation protective agent spraying device based on galvanized iron parts, comprising a workbench (1), wherein a roller conveyor belt (2) is provided on the workbench (1), characterized in that, The top of the workbench (1) is provided with a mounting box (3), a spraying groove is provided on the mounting box (3), a conveying pipe (4) is provided on the top of the mounting box (3), a bidirectional screw (5) is provided on the spraying groove, a bearing seat (6) is provided between one end of the bidirectional screw (5) and the mounting box (3), a drive motor (7) is provided between the other end of the bidirectional screw (5) and the mounting box (3), an adjusting block (8) is provided between both ends of the bidirectional screw (5) and the spraying groove, a guide mechanism is provided between the spraying groove and the two adjusting blocks (8), an adjusting mechanism is provided between the adjusting block (8) and the conveying pipe (4), the adjusting mechanism includes a transmission cavity and an adjusting nozzle (9), the transmission cavity is opened inside the mounting box (3), a hose (10) is provided on the transmission cavity, one end of the hose (10) is connected to the adjusting nozzle (9), the other end of the hose (10) is connected to the conveying pipe (4), and a locking mechanism is provided between the bidirectional screw (5) and the mounting box (3).
2. The white passivation protective agent spraying device based on galvanized iron parts according to claim 1, characterized in that, The locking mechanism includes a locking groove and a telescopic mechanism (11). The locking groove is located at the top of the mounting box (3). A drive gear (12) is provided between the locking groove and the bidirectional lead screw (5). The telescopic mechanism (11) is installed at the top of the mounting box (3). A toothed block (13) is provided between the output end of the telescopic mechanism (11) and the locking groove. The toothed block (13) meshes against the drive gear (12).
3. The white passivation protective agent spraying device based on galvanized iron parts according to claim 2, characterized in that, The guiding mechanism includes a guide groove and a slide bar (14). The guide groove is opened at the top of the two adjusting blocks (8), and the slide bar (14) is installed at the top of the spraying groove and passes through the guide groove.
4. The white passivation protective agent spraying device based on galvanized iron parts according to claim 3, characterized in that, The guide groove and the slide bar (14) are both T-shaped.
5. The white passivation protective agent spraying device based on galvanized iron parts according to claim 4, characterized in that, A fixed nozzle (15) is provided between the top of the spraying trough and the delivery pipe.
6. The white passivation protective agent spraying device based on galvanized iron parts according to claim 5, characterized in that, The telescopic mechanism (11) is an electric telescopic rod.
7. The white passivation protective agent spraying device based on galvanized iron parts according to claim 6, characterized in that, The drive motor (7) is a servo motor.
8. The white passivation protective agent spraying device based on galvanized iron parts according to claim 7, characterized in that, The top of the spray tank is equipped with a lighting mechanism (16).