A passivation liquid spraying device for galvanized metal surfaces

Abstract

This utility model belongs to the field of metal surface passivation treatment, specifically a passivation liquid spraying device for galvanized metal surfaces. It includes a passivation shell with a liquid storage chamber inside, featuring a liquid passage hole, an inlet pipe, and an outlet pipe. A clamping rod is located on the inner wall of the passivation shell, and a clamping plate is located on the side wall of the clamping rod, with a metal casting on the clamping plate. Columns are located at both ends of the clamping rod, each column having a sliding groove. The bottom of the groove is slidably connected to the clamping rod, and a cylinder is located between the end of the groove and the clamping rod. A rotary cylinder is located between the column and the passivation shell. A spray ring pipe is located on the outer side of the metal casting. Through a structure design of multiple sliding connecting seats fitted onto the surface of the fixed rod, combined with the locking function of the threaded cap, manual adjustment of the spray pipe spacing is achieved. When the threaded cap is rotated to loosen, the connecting seats slide freely; when tightened, adjacent spray points are precisely fixed. This solves the problem that the passivation liquid spray density cannot adapt to different process requirements, improving the efficiency of single adjustment.

Description

Technical Field

[0001] This utility model relates to the field of metal surface passivation treatment, specifically a passivation liquid spraying device for galvanized metal surfaces. Background Technology

[0002] Zinc plating passivation is a film-forming process used during zinc plating to reduce the chemical activity of zinc and prevent the plating from darkening and corroding. Passivation involves forming a passivation film on the zinc surface, typically using a chromate solution. This film is called a "chromate conversion film" or "zinc plating passivation film."

[0003] In the prior art, such as in the patent announcement number CN214004784U, a surface passivation device for metal castings is disclosed. It includes a passivation shell, a liquid storage chamber within the shell, a liquid passage hole, an inlet pipe, and an outlet pipe. A clamping rod is provided on the inner wall of the passivation shell, and a clamping plate is provided on the side wall of the clamping rod. A metal casting is mounted on the clamping plate. Columns are provided at both ends of the clamping rod, and grooves are provided on the columns. The bottom of the grooves is slidably connected to the clamping rod. A cylinder is provided between the end of the groove and the clamping rod, and a rotary cylinder is provided between the columns and the passivation shell. A spray ring pipe is provided on the outer side of the metal casting, and a spray head is provided on the spray ring pipe. A fixing rod and a delivery pipe are provided on both sides of the spray ring pipe, respectively. The delivery pipe penetrates the passivation shell, and a pump body is provided on the passivation shell. The pump body is rotatably connected to the delivery pipe and connected to the outlet pipe.

[0004] While the aforementioned patents can improve the passivation coverage of metal castings and slow down the corrosion rate of metals, the spray density cannot be adjusted in time during the passivation spraying process due to different passivation effect requirements, thus reducing spraying efficiency. Furthermore, the different volumes of metal castings mean that the spraying position cannot be adjusted according to the needs of the spraying points during passivation spraying, reducing the adaptability of the spraying process. Therefore, to address these issues, a passivation liquid spraying device for galvanized metal surfaces is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, which include varying passivation requirements leading to inconsistent spray density and reduced spray efficiency, and the inability to adjust spray positions based on the specific needs of different metal casting volumes during passivation treatment, thus compromising spray adaptability, this invention proposes a passivation liquid spraying device for galvanized metal surfaces.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The passivation liquid spraying device for galvanized metal surfaces of this utility model includes a fixed plate A; triangular plates are fixedly connected to both ends of the fixed plate A, a rotating wheel is rotatably connected to the surface of one of the triangular plates, one end of the rotating wheel passes through the triangular plate and is fixedly connected to a threaded screw, the other end of the threaded screw is rotatably connected to another triangular plate, a threaded cylinder is threadedly connected to the surface of the threaded screw, a connecting rod is fixedly connected to one side of the threaded cylinder, a sliding groove is opened on the surface of the fixed plate A, a bearing is slidably connected inside the sliding groove, and the connecting rod passes through the bearing and is fixedly connected to the fixed rod; several connecting seats are sleeved on the surface of the fixed rod, a tank is set on the top of the connecting seat, a spray pipe is symmetrically connected to the four corners of the bottom of the tank, the spray pipe extends through the connecting seat to its bottom end, a threaded cap for locking is threadedly connected to the side of the connecting seat, a fixed plate B is slidably connected to the other end of the fixed rod, and telescopic plates are set at the bottom of both ends of the fixed plate A and the fixed plate B, and a nut for locking is threadedly connected to the side of the telescopic plate.

[0007] Preferably, the bottom end of the nozzle is provided with a fan-shaped atomizing nozzle, the spray angle of which is perpendicular to the horizontal plane.

[0008] Preferably, the threaded cylinder and the connecting rod are welded together to form an L-shaped linkage structure, and the axis of the connecting rod is perpendicular to the axis of the threaded screw.

[0009] Preferably, the bearing is a linear ball bearing, with its outer ring having an interference fit with the inner wall of the groove.

[0010] Preferably, the telescopic plate is a nested square tube structure, with threaded holes matching the nuts on the outer tube sidewall.

[0011] Preferably, the liquid injection pipe at the top of the tank is provided with a sealed end cap, and the end cap has a liquid injection port with internal threads at its center.

[0012] The advantages of this utility model are:

[0013] 1. This utility model uses a structure design of multiple sliding connecting seats on the surface of a fixed rod, combined with the locking function of a threaded cap, to realize manual adjustment of the nozzle spacing; when the threaded cap is rotated to loosen, the connecting seats slide freely, and when tightened, adjacent spray points are precisely fixed, which solves the problem that the spray density of passivation liquid cannot adapt to different process requirements, and improves the efficiency of single adjustment;

[0014] 2. The present invention features a structure that drives the screw rod to rotate via a rotating wheel, thereby causing the screw cylinder to move horizontally. The displacement is transmitted through an L-shaped welded connecting rod, which pushes the linear ball bearing to slide in the groove. Ultimately, the fixed rod and all connecting seats move synchronously, covering the width of the workstation and solving the problem of blind spots in the local spraying of large metal parts. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of fixing plate A and fixing plate B of this utility model;

[0018] Figure 3 This is a schematic diagram of the connector structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the threaded screw structure of this utility model.

[0020] In the diagram: 1. Fixed plate A; 2. Triangular plate; 3. Rotary wheel; 4. Threaded screw; 5. Threaded cylinder; 6. Connecting rod; 7. Bearing; 8. Fixed rod; 9. Connecting seat; 10. Tank body; 11. Spray pipe; 12. Threaded cap; 13. Liquid injection pipe; 14. Fixed plate B; 15. Telescopic plate; 16. Nut. 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 scope of protection of the present utility model.

[0022] Please see Figures 1-4As shown, a passivation liquid spraying device for galvanized metal surfaces includes an A fixed plate 1; triangular plates 2 are fixedly connected to both ends of the A fixed plate 1, with a rotating wheel 3 rotatably connected to the surface of one of the triangular plates 2, a threaded screw 4 fixedly connected to one end of the rotating wheel 3 through the triangular plate 2, and another triangular plate 2 rotatably connected to the other end of the threaded screw 4; a threaded cylinder 5 is threadedly connected to the surface of the threaded screw 4, and a connecting rod 6 is fixedly connected to one side of the threaded cylinder 5; a sliding groove is opened on the surface of the A fixed plate 1, and a bearing 7 is slidably connected inside the sliding groove; the connecting rod 6 passes through the bearing 7 and is fixedly connected to a fixed rod 8; several connecting seats 9 are sleeved on the surface of the fixed rod 8; a tank 10 is set on the top of the connecting seat 9; a spray pipe 11 is symmetrically connected to the four corners of the bottom of the tank 10; the spray pipe 11 extends through the connecting seat 9 to its bottom end; a threaded cap 12 for locking is threadedly connected to the side of the connecting seat 9; a B fixed plate 14 is slidably connected to the other end of the fixed rod 8; telescopic plates 15 are set at the bottom of both ends of the A fixed plate 1 and the B fixed plate 14; a nut 16 for locking is threadedly connected to the side of the telescopic plate 15.

[0023] During operation, rotating wheel 3 drives threaded screw 4 to rotate, causing threaded cylinder 5 to move horizontally along screw and push linear ball bearing 7 to slide in groove through welded connecting rod 6, thereby driving fixed rod 8 and connecting seat 9 to move as a whole to adjust the spray position; loosening threaded cap 12 allows for sliding adjustment of the spacing of connecting seat 9, and then re-locking it. Simultaneously adjusting the height of telescopic plate 15 and then tightening nut 16 to fix it, threaded screw 4 realizes the horizontal displacement adjustment of the spray unit, and the spacing of connecting seat 9 can be adjusted to adapt to different density requirements.

[0024] Furthermore, a fan-shaped atomizing nozzle is provided at the bottom of the nozzle 11, and its spray angle is perpendicular to the horizontal plane;

[0025] During operation, the passivation liquid is diverted from the tank 10 to the four corner nozzles 11, and sprayed vertically downward from the bottom fan-shaped atomizing nozzle to form a cone-shaped mist covering the metal surface. The fan-shaped atomization of the vertical nozzles 11 improves the uniformity of coverage and avoids spray dead corners.

[0026] Furthermore, the threaded cylinder 5 and the connecting rod 6 are welded together to form an L-shaped linkage structure, with the axis of the connecting rod 6 perpendicular to the axis of the threaded screw 4;

[0027] During operation, the threaded cylinder 5 and the connecting rod 6 are welded together to form a rigid structure, and the rotational force of the threaded screw 4 is converted into the linear displacement of the connecting rod 6.

[0028] Furthermore, bearing 7 is a linear ball bearing, and its outer ring is interference-fitted with the inner wall of the groove;

[0029] During operation, the outer ring of the linear ball bearing 7 is interference-fitted with the slide groove, and the inner ring is tightly fitted with the connecting rod 6, reducing frictional resistance during sliding.

[0030] Furthermore, the telescopic plate 15 is a nested square tube structure, and its outer tube sidewall has a threaded hole that matches the nut 16.

[0031] During operation, the telescopic plate 15 adjusts the height of the A / B fixing plates by 1 / 14 through the nested square tube, and the nut 16 is tightened to press the inner tube to prevent it from sinking.

[0032] Furthermore, a sealing end cap is provided on the liquid injection pipe 13 at the top of the tank body 10, and a liquid injection port with internal threads is opened in the center of the end cap;

[0033] During operation, when the sealing cap at the top of the injection tube 13 is tightened, it compresses the rubber gasket, and the internal thread of the cap matches the injection connector to prevent leakage.

[0034] Working principle: The device drives the threaded screw 4 to rotate by rotating the wheel 3, which in turn drives the threaded cylinder 5 to move horizontally. This causes the L-shaped welded connecting rod 6 to push the linear ball bearing 7 to slide along the slide groove. The linkage fixing rod 8 and its multiple connecting seats 9 are moved synchronously to adjust the spray position. Loosening the threaded cap 12 allows the distance between the connecting seats 9 to be adjusted by sliding, and then locking it to change the spray density. After adjusting the height of the telescopic plate 15, tighten the nut 16 to fix it. At the same time, the passivation liquid in the tank 10 forms a cone-shaped mist curtain through the vertical fan-shaped atomizing nozzle 11 to cover the galvanized metal surface.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A passivation liquid spraying device for galvanized metal surfaces, characterized in that: Includes a fixed plate A (1); the fixed plate A (1) is fixedly connected to two triangular plates (2) at both ends, one of the triangular plates (2) is rotatably connected to a rotating wheel (3), one end of the rotating wheel (3) passes through the triangular plate (2) and is fixedly connected to a threaded screw (4), the other end of the threaded screw (4) is rotatably connected to another triangular plate (2), the threaded screw (4) is threadedly connected to a threaded cylinder (5), a connecting rod (6) is fixedly connected to one side of the threaded cylinder (5), a sliding groove is opened on the surface of the fixed plate A (1), a bearing (7) is slidably connected inside the sliding groove, and the connecting rod (6) passes through the bearing (7) and is fixedly connected to a fixed rod (8); The surface of the fixing rod (8) is fitted with several connecting seats (9). A tank (10) is set on the top of the connecting seat (9). The bottom corners of the tank (10) are symmetrically connected to the nozzle (11). The nozzle (11) extends through the connecting seat (9) to its bottom end. The side of the connecting seat (9) is threaded with a threaded cap (12) for locking. The other end of the fixing rod (8) is slidably connected to the B fixing plate (14). The bottom of both ends of the A fixing plate (1) and the B fixing plate (14) are provided with telescopic plates (15). The side of the telescopic plate (15) is threaded with a nut (16) for locking.

2. The passivation liquid spraying device for galvanized metal surfaces according to claim 1, characterized in that: The bottom end of the nozzle (11) is provided with a fan-shaped atomizing nozzle, and its spray angle is perpendicular to the horizontal plane.

3. The passivation liquid spraying device for galvanized metal surfaces according to claim 1, characterized in that: The threaded cylinder (5) and the connecting rod (6) are welded together to form an L-shaped linkage structure, and the axis of the connecting rod (6) is perpendicular to the axis of the threaded screw (4).

4. The passivation liquid spraying device for galvanized metal surfaces according to claim 1, characterized in that: The bearing (7) is a linear ball bearing, and its outer ring is interference-fitted with the inner wall of the groove.

5. The passivation liquid spraying device for galvanized metal surfaces according to claim 1, characterized in that: The telescopic plate (15) is a nested square tube structure, and its outer tube sidewall has a threaded hole that matches the nut (16).

6. The passivation liquid spraying device for galvanized metal surfaces according to claim 1, characterized in that: The top injection pipe (13) of the tank (10) is equipped with a sealed end cap, and an injection port with internal threads is opened in the center of the end cap.

Images