A fluxing tank for fluxing galvanizing workpieces

Abstract

A kind of for galvanizing workpiece auxiliary plating operation auxiliary plating tank, including tank body, the bottom of tank body is equipped with support leg, the wall portion of tank body is equipped with interlayer cavity, heating unit is equipped in interlayer cavity, tank body bottom is equipped with water outlet, tank body side wall is equipped with water inlet, water outlet is connected with water inlet by circulation pipeline, circulation pipeline is equipped with the circulating pump of driving auxiliary plating liquid circulation.The utility model aims at providing a kind of for galvanizing workpiece auxiliary plating operation auxiliary plating tank, to improve the problem of uneven heating of workpiece in auxiliary plating pool.

Description

Technical Field

[0001] This utility model relates to the field of galvanized workpiece production equipment, specifically a galvanizing tank for galvanizing workpieces. Background Technology

[0002] In the pretreatment process for galvanizing, the workpiece needs to go through pickling, washing, and fluxing in sequence. Pickling and washing expose the workpiece surface directly to the air, while the fluxing process not only forms an isolation layer on the workpiece surface through the fluxing solution to prevent secondary oxidation, but also further removes any impurities that may remain from the previous treatments, thus providing clean surface conditions for galvanizing.

[0003] To improve the plating effect, the plating solution usually needs to be heated. For example, patent CN208378969U discloses a heating device for a hot-dip galvanizing plating bath, which has legs at the bottom of the plating bath and multiple horizontally parallel stainless steel pipes fixed in the lower part of the bath. Parallel electric heating tubes are installed inside the pipes to raise the temperature of the bath.

[0004] Although the structure can maintain the basic temperature of the flux, in practical applications it has been found that placing the heating tube only in the lower part of the tank can easily cause a significant temperature difference between the upper and lower layers of the flux, resulting in uneven heating of the workpiece during the fluxing process and inconsistent temperatures between the upper and lower surfaces, which may affect the uniformity and adhesion of the subsequent zinc plating. Utility Model Content

[0005] The present invention aims to provide a fluxing tank for galvanizing workpieces to improve the problem of uneven heating of workpieces in the fluxing tank.

[0006] To solve the above technical problems, the specific solution adopted by this utility model is as follows: it includes a tank body, a support leg at the bottom of the tank body, a double-layer cavity in the wall of the tank body, a heating unit in the double-layer cavity, a water outlet at the bottom of the tank body, a water inlet on the side wall of the tank body, the water outlet and the water inlet are connected by a circulation pipeline, and a circulation pump for driving the circulation of the plating solution is provided on the circulation pipeline.

[0007] As a further optimization of the fluxing tank used for galvanizing workpieces, the bottom wall and the four side walls of the tank are provided with interlayer cavities, and heating units are installed in the interlayer cavities.

[0008] As a further optimization of the fluxing tank for galvanizing workpieces: one end of the interlayer cavity is provided with a sealed end cap, the side wall of the interlayer cavity is provided with a guide rail, the heating unit includes a support frame and an electric heating tube installed on the support frame, and the side of the support frame is provided with a sliding groove that cooperates with the guide rail.

[0009] As a further optimization of the fluxing tank used for fluxing operations on galvanized workpieces, a lifting handle is provided on the support frame.

[0010] As a further optimization of the fluxing tank used for fluxing operations on galvanized workpieces: the electric heating tube has a corrugated structure.

[0011] As a further optimization of the fluxing tank used for fluxing galvanized workpieces: the sealing end cap is connected to the tank body by bolts.

[0012] As a further optimization of the fluxing tank used for galvanizing workpieces: several branch pipes are connected to the circulation pipeline, and each branch pipe is connected to multiple water inlets located on the side wall of the tank.

[0013] As a further optimization of the fluxing tank used for galvanizing workpieces: the outlet is located at the center of the bottom of the tank, and the inlet is located on the side wall of the tank away from the bottom of the tank.

[0014] As a further optimization of the fluxing tank used for fluxing galvanized workpieces, a filter screen is installed at the outlet.

[0015] Beneficial effects: This invention, by creating a sandwich cavity within the bottom and side walls of the tank and installing a heating unit within the cavity, ensures uniform heating of the fluxing solution within the tank. Simultaneously, the inclusion of an outlet and inlet enables liquid circulation within the tank, preventing the fluxing solution near the heating unit from being at a higher temperature and the solution further away from the heating unit from being at a lower temperature, thus improving the problem of uneven heating of the workpiece in the fluxing bath. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the plating tank of this utility model; Figure 2 This is a schematic diagram of the heating unit of this utility model; The markings in the diagram are: 1. Tank body, 2. Guide rail, 3. Water inlet, 4. Plating solution, 5. Sealed end cap, 6. Interlayer cavity, 7. Filter screen, 8. Water outlet, 9. Circulation pump, 10. Circulation pipeline, 11. Support leg, 12. Heating unit, 13. Support frame, 14. Slide, 15. Lifting handle, 16. Electric heating element. Detailed Implementation

[0017] like Figure 1 As shown, a fluxing tank for galvanizing workpieces includes a tank body 1, with a support leg 11 at the bottom of the tank body 1. The tank body 1 is used to hold fluxing solution 4 and is the main place for fluxing workpieces. The wall of the tank body 1 is provided with a double-layer cavity 6, and a heating unit 12 is provided in the double-layer cavity 6. The heating unit 12 is used to heat the fluxing solution 4.

[0018] The bottom wall and the four side walls of the tank 1 are provided with interlayer cavities 6, and heating units 12 are installed in each interlayer cavity 6, which can heat the flux 4 in the tank 1 from all directions, so that the temperature of the flux 4 is more uniform.

[0019] The tank 1 has an outlet 8 at its bottom and an inlet 3 on its side wall. The outlet 8 and the inlet 3 are connected by a circulation pipe 10, which is equipped with a circulation pump 9 to drive the fluxing solution 4. Driven by the circulation pump 9, the fluxing solution 4 enters the circulation pipe 10 through the outlet 8 and then flows into the tank 1 through the inlet 3, thus realizing the circulation of the fluxing solution 4 in the tank 1 and making the temperature of the fluxing solution 4 in the tank 1 more uniform.

[0020] Several branch pipes are connected to the circulation pipeline 10. Each branch pipe is connected to multiple inlets 3 located on the side wall of the tank body 1. The branch pipes and multiple inlets 3 enable the fluxing solution 4 flowing out of the outlet 8 to flow back into the tank body 1 from all directions, further improving the temperature uniformity of the fluxing solution 4 in the tank body 1.

[0021] The outlet 8 is located at the center of the bottom of the tank 1. During the heating process of the flux 4 in the tank 1, the central area of ​​the tank 1 is the farthest from all the heating walls, and the temperature at this location is the lowest. By placing the outlet 8 at the center of the bottom, the liquid with the lowest temperature can be drawn away, promoting the flow of liquid in all locations and thus homogenizing the temperature of the flux 4. The inlet 3 is located on the side wall of the tank 1, away from the bottom of the tank 1. The flux 4 drawn from the bottom is injected from above, which can form a circulating flow covering the entire volume of the tank 1. This can maximize the agitation of every part of the liquid in the tank and promote the uniformity of the temperature of the flux 4.

[0022] A filter screen 7 is installed at the outlet 8. The filter screen 7 can filter the flux 4 entering the circulation pipe, prevent foreign objects from entering the circulation pump 9, prevent foreign objects from damaging the circulation pump 9, and improve the practicality of the device.

[0023] One end of the interlayer cavity 6 is provided with a sealing end cover 5. The sealing end cover 5 is connected to the tank body 1 by bolts. The design of the detachable sealing end cover 5 facilitates the installation and maintenance of the heating unit 12 in the interlayer cavity 6.

[0024] like Figure 2As shown, the sidewall of the interlayer cavity 6 is provided with a guide rail 2. The heating unit 12 includes a support frame 13 and an electric heating tube 16 mounted on the support frame 13. The side of the support frame 13 is provided with a sliding groove 14 that cooperates with the guide rail 2. In this embodiment, the electric heating tube 16 is snapped onto the support frame 13. This design enables the heating unit 12 to be quickly installed, removed, and replaced, reducing maintenance costs. At the same time, the cooperation between the guide rail 2 and the sliding groove 14 allows the heating unit 12 to be smoothly inserted into or removed from the interlayer cavity 6 along a predetermined route, avoiding damage caused by improper installation. The support frame 13 is provided with a lifting handle 15, which improves the practicality of the device. The electric heating tube 16 has a corrugated structure. The corrugated electric heating tube 16 can greatly increase the heat exchange area in a limited space and improve heating efficiency.

[0025] The method of using the fluxing tank for galvanizing workpieces according to this utility model is as follows: First, ensure that the fluxing solution 4 in the fluxing tank is at a suitable level; then start the circulation pump 9 to drive the fluxing solution 4 to form a circulating flow field from the bottom center outlet 8 and the inlet 3 above the side wall; after the liquid starts circulating, start the heating unit 12 to heat the fluxing solution 4 in the tank 1. When the temperature of the fluxing solution 4 reaches a suitable temperature, the fluxing operation is performed; when the heating unit 12 needs to be maintained or replaced, simply open the sealing end cover 5 and use the lifting handle 15 to pull out the heating unit 12 for maintenance. After maintenance, push the heating unit 12 back into the interlayer cavity 6, which greatly facilitates the maintenance operation.

Claims

1. A fluxing tank for fluxing zinc plating operations, comprising a tank body (1), wherein the bottom of the tank body (1) is provided with support legs (11), characterized in that: The wall of the tank (1) is provided with a double-layer cavity (6), and a heating unit (12) is provided in the double-layer cavity (6). The bottom of the tank (1) is provided with a water outlet (8), and the side wall of the tank (1) is provided with a water inlet (3). The water outlet (8) and the water inlet (3) are connected through a circulation pipe (10). A circulation pump (9) is provided on the circulation pipe (10) to drive the circulation of the plating solution (4).

2. The fluxing tank for fluxing zinc-plated workpieces according to claim 1, characterized in that: The bottom wall and the four side walls of the tank (1) are provided with interlayer cavities (6), and heating units (12) are installed in the interlayer cavities (6).

3. The fluxing tank for fluxing zinc-plated workpieces according to claim 1, characterized in that: One end of the interlayer cavity (6) is provided with a sealing end cap (5), and the side wall of the interlayer cavity (6) is provided with a guide rail (2). The heating unit (12) includes a support frame (13) and an electric heating tube (16) installed on the support frame (13). The side of the support frame (13) is provided with a sliding groove (14) that cooperates with the guide rail (2).

4. A fluxing tank for fluxing zinc-plated workpieces according to claim 3, characterized in that: The support frame (13) is equipped with a lifting handle (15).

5. A fluxing tank for fluxing zinc-plated workpieces according to claim 3, characterized in that: The electric heating tube (16) has a corrugated structure.

6. A fluxing tank for fluxing zinc-plated workpieces according to claim 3, characterized in that: The sealing end cap (5) is connected to the tank body (1) by bolts.

7. A fluxing tank for fluxing zinc-plated workpieces according to claim 1, characterized in that: Several branch pipes are connected to the circulation pipeline (10), and each branch pipe is connected to a number of water inlets (3) located on the side wall of the tank (1).

8. A fluxing tank for fluxing zinc-plated workpieces according to claim 1, characterized in that: The outlet (8) is located at the center of the bottom of the tank (1), and the inlet (3) is located on the side wall of the tank (1) away from the bottom of the tank (1).

9. A fluxing tank for fluxing zinc-plated workpieces according to claim 1, characterized in that: A filter screen (7) is installed at the water outlet (8).

Images