A passivation device for surface treatment of galvanized sheet

Abstract

This invention discloses a passivation device for surface treatment of galvanized steel sheets, comprising a passivation box and passivation supports for galvanized steel sheets. The passivation box contains the passivation supports for galvanized steel sheets. This invention utilizes a lifting motor to drive a lifting gear set, which meshes with a rack on one of the lifting supports to control the lifting and lowering of the passivation supports. Multiple passivation supports are automatically immersed in the passivation solution stored inside the passivation box for surface passivation. A liquid pump extracts the upper layer of the passivation solution from the inside of the box and fills the bottom of the box with the passivation solution. A guide shroud on one side guides the water flow, creating a circulating water flow within the passivation box. This ensures uniform passivation of the solution, improving the efficiency and effectiveness of the passivation reaction on the galvanized steel sheet surface.

Description

Technical Field

[0001] This utility model relates to the field of galvanized sheet production technology, and in particular to a passivation device for surface treatment of galvanized sheets. Background Technology

[0002] While galvanizing significantly improves the corrosion resistance of steel sheets, it still falls short of the requirements for prolonged use in humid environments. To further enhance the durability of galvanized sheets, surface passivation treatment is necessary. This passivation process involves using a chromate solution, which reacts with the metallic zinc on the galvanized sheet surface through oxidation and reduction reactions.

[0003] For example, application number CN202111389951.9 discloses a chromium-free passivation treatment device for galvanized layers, including a passivation tank, a hook installed above the passivation tank and a hanging plate installed on the hook, a first hanging rope fixedly connected to the hanging plate, and a second hanging rope installed on the hanging plate. This device puts the galvanized parts into the passivation tank for reaction by hoisting. However, this method can process a small number of galvanized parts and has low production efficiency; moreover, the immersion solution used for passivating the surface of the galvanized parts does not flow, resulting in low passivation efficiency of the galvanized parts surface. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a passivation device for the surface treatment of galvanized steel sheets, which can more accurately solve the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a passivation device for surface treatment of galvanized steel sheets, including a passivation box and a galvanized steel sheet passivation support. The passivation box contains the galvanized steel sheet passivation support, which includes two pairs of vertically arranged lifting columns. Each pair of lifting columns is connected to several guide roller supports, and the inner side of each guide roller support is provided with several guide rollers for guiding the tin-plated steel sheet. The inner cavity of the passivation box contains lifting guide rails corresponding to the positions of the two pairs of lifting columns. Three of the lifting guide rails contain rows of lifting rollers, and the other lifting guide rail contains a row of lifting gears. Three of the lifting pillars are provided with roller grooves corresponding to the lifting roller row positions. The other lifting pillar is provided with a rack corresponding to the lifting gear row position, and the rack meshes with the lifting gear row. A water inlet is provided at the bottom of one side of the passivation box, and a water pumping port is provided above the water inlet. The water inlet is connected to the water outlet of the liquid pump through a first liquid guide pipe. The water pumping port is connected to a second liquid guide pipe. The water pumping port is connected to the outer port of the second liquid guide pipe through a third liquid guide pipe. A flow guide shroud is integrally formed on the side of the passivation box away from the second liquid guide pipe.

[0007] Furthermore, the guide rollers are arranged at equal intervals along the length of the guide roller bracket, and several guide roller brackets are arranged at equal intervals along the longitudinal direction.

[0008] Furthermore, a lifting motor is provided on the outer wall of the passivation box at the position corresponding to the uppermost lifting gear row, and the output shaft end of the lifting motor is connected to the shaft end of the uppermost lifting gear row.

[0009] Furthermore, the flow guide shroud, the first liquid guide tube, and the second liquid guide tube are disposed on both sides of the tinplate conveying direction, and the flow guide shroud is a semi-circular arc-shaped plate.

[0010] Furthermore, the passivation box has 3-4 horizontally arranged water inlet pipe interfaces and water outlet pipe interfaces. The first liquid guide pipe is equipped with a diversion pipe and connects to each water inlet pipe interface, and the second liquid guide pipe is equipped with a diversion pipe and connects to each water outlet pipe interface.

[0011] The beneficial effects of this utility model are:

[0012] 1. This utility model drives the lifting gear set through a lifting motor, so that the lifting gear set meshes with the rack set on one of the lifting columns, thereby achieving lifting control of the galvanized sheet passivation bracket. Combined with the tinplate conveying device set on both sides of this utility model, the tinplate can be automatically fed into the galvanized sheet passivation bracket in sequence, and multiple galvanized sheet passivation brackets are automatically controlled to be immersed in the passivation solution stored inside the passivation box for surface passivation reaction. A gap is left between each tinplate for introducing the passivation solution.

[0013] 2. This utility model extracts the upper layer of passivation solution inside the passivation tank under the operation of a liquid pump and fills the bottom of the passivation tank cavity with passivation solution. The water flow is guided by a guide shroud on the other side, thereby forming a water flow circulation inside the passivation tank, which uniformly distributes the passivation solution inside the passivation tank and improves the passivation reaction efficiency and effect on the tin-plated plate surface. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the passivation bracket for galvanized steel sheets in this utility model;

[0016] Figure 3 This is a top view of the structure of this utility model;

[0017] Figure 4 This is a cross-sectional view of the structure of this utility model.

[0018] In the diagram: 1. Passivation box; 101. Lifting guide rail; 1011. Lifting roller row; 1012. Lifting gear row; 1013. Lifting motor; 102. First liquid guide pipe; 1021. Second liquid guide pipe; 1022. Liquid pump; 1023. Third liquid guide pipe; 103. Flow guide cover; 2. Galvanized sheet passivation bracket; 201. Lifting support column; 2011. Rack; 202. Material guide roller bracket; 203. Material guide roller; 3. Tin plate. 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. Example 1

[0020] A passivation device for surface treatment of galvanized sheet includes a passivation box 1 and a galvanized sheet passivation support 2. The passivation box 1 is filled with a passivation solution, and the passivation support 2 is provided inside the passivation box 1. The galvanized sheet passivation support 2 includes two pairs of vertically arranged lifting columns 201. Each pair of lifting columns 201 is connected to several guide roller supports 202. The inner side of the guide roller supports 202 is provided with several guide rollers 203 for guiding tin-plated sheets 3. The several guide rollers 203 are arranged at equal intervals along the length direction of the guide roller supports 202, and the several guide roller supports 202 are arranged at equal intervals along the longitudinal direction, so that multiple tin-plated sheets 3 can be placed on the galvanized sheet passivation support 2 at the same time, and a gap is left between each tin-plated sheet 3 for introducing the passivation solution.

[0021] Lifting guide rails 101 are provided in the inner cavity of the passivation box 1, corresponding to the positions of the two pairs of lifting support columns 201. Among them, three lifting guide rails 101 are provided with lifting roller rows 1011, and another lifting guide rail 101 is provided with lifting gear rows 1012. Three of the two pairs of lifting support columns 201 are provided with roller grooves corresponding to the positions of the lifting roller rows 1011. The other lifting support column 201 is provided with a rack 2011 corresponding to the position of the lifting gear row 1012. The rack 2011 is engaged with the lifting gear row 1012 in a transmission. A lifting motor 1013 is provided on the outer wall of the passivation box 1, corresponding to the position of the uppermost lifting gear row 1012. The output shaft end of the lifting motor 1013 is connected to the shaft end of the uppermost lifting gear row 1012 in a transmission. The lifting motor 1013 drives the lifting gear row 1012, which meshes with the rack 2011 on one of the lifting columns 201, thereby achieving lifting control of the galvanized sheet passivation bracket 2.

[0022] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: This utility model drives the lifting gear set 1012 through the lifting motor 1013, so that the lifting gear set 1012 meshes with the rack 2011 provided on one of the lifting pillars 201, thereby achieving lifting control of the galvanized sheet passivation bracket 2. Combined with the conveying device of tin-plated sheet 3 set on both sides of this utility model, the tin-plated sheet 3 can be automatically and sequentially fed into the galvanized sheet passivation bracket 2, and multiple galvanized sheet passivation brackets 2 are automatically controlled to be immersed in the passivation solution stored inside the passivation box 1 for surface passivation reaction. A gap is left between each tin-plated sheet 3 for introducing the passivation solution. Example 2

[0023] A water inlet port is provided at the bottom of one side of the passivation box 1, and a water pump port is provided above the water inlet port. The water inlet port is connected to the water outlet port of the liquid pump 1022 through the first liquid guide pipe 102. The water pump port is connected to the second liquid guide pipe 1021. The water pump port of the liquid pump 1022 is connected to the outer port of the second liquid guide pipe 1021 through the third liquid guide pipe 1023. A flow guide shroud 103 is integrally formed on the side of the passivation box 1 away from the second liquid guide pipe 1021. The flow guide shroud 103, the first liquid guide pipe 102, and the second liquid guide pipe 1021 are arranged on both sides of the tin-plated plate 3 in the direction of conveying. The flow guide shroud 103 is a semi-circular arc plate. Under the operation of the liquid pump 1022, the upper layer of the passivation solution inside the passivation box 1 is extracted and the passivation solution is filled into the bottom of the inner cavity of the passivation box 1. The flow guide shroud 103 on the other side guides the water flow, thereby forming a water flow circulation inside the passivation box 1.

[0024] Among them, the passivation box 1 has 3-4 horizontally arranged water inlet pipe interfaces and water outlet pipe interfaces. The first liquid guide pipe 102 is equipped with a diversion pipe connected to each water inlet pipe interface, and the second liquid guide pipe 1021 is equipped with a diversion pipe connected to each water outlet pipe interface, thereby expanding the flow surface of the passivation solution inside the passivation box 1.

[0025] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Under the operation of the liquid pump 1022, the upper layer of the passivation solution inside the passivation tank 1 is extracted and the passivation solution is filled into the bottom of the inner cavity of the passivation tank 1. The water flow is guided by the guide shroud 103 on the other side, thereby forming a water flow circulation inside the passivation tank 1, which uniformly passesivates the passivation solution inside the passivation tank 1 and improves the passivation reaction efficiency and effect on the surface of the tin-plated plate 3.

[0026] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A passivation device for surface treatment of a galvanized sheet comprising a passivation tank (1) and a galvanized sheet passivation support (2), characterized in that, The passivation box (1) is equipped with a galvanized sheet passivation support (2) inside. The galvanized sheet passivation support (2) includes two pairs of vertically arranged lifting pillars (201). Several guide roller supports (202) are connected between each pair of lifting pillars (201). Several guide rollers (203) for guiding tin-plated sheets (3) are provided on the inner side of the guide roller supports (202). Lifting guide rails (101) are provided in the inner cavity of the passivation box (1) at the positions corresponding to the two pairs of lifting pillars (201). Lifting roller rows (1011) are provided in three of the lifting guide rails (1011), and lifting gear rows (1012) are provided in the other lifting guide rail (1012). Three of the two pairs of lifting pillars (201) and the three corresponding to the lifting roller rows (1011) are connected to the galvanized sheet passivation support (202). 1) A roller groove is provided at the position, and another lifting support (201) is provided with a rack (2011) corresponding to the position of the lifting gear row (1012). The rack (2011) is engaged with the lifting gear row (1012). A water inlet interface is provided at the bottom of one side of the passivation box (1). A water pump interface is provided above the water inlet interface. The water inlet interface is connected to the water outlet interface of the liquid pump (1022) through the first liquid guide pipe (102). The water pump interface is connected to the second liquid guide pipe (1021). The water pump interface of the liquid pump (1022) is connected to the outer port of the second liquid guide pipe (1021) through the third liquid guide pipe (1023). A flow guide shroud (103) is integrally formed on the side of the passivation box (1) away from the second liquid guide pipe (1021).

2. The passivation device for surface treatment of a galvanized sheet according to claim 1, characterized by The guide rollers (203) are arranged at equal intervals along the length of the guide roller bracket (202), and several guide roller brackets (202) are arranged at equal intervals along the longitudinal direction.

3. The passivation device for surface treatment of a galvanized sheet according to claim 1, characterized by The outer wall of the passivation box (1) is provided with a lifting motor (1013) corresponding to the position of the uppermost lifting gear row (1012), and the output shaft end of the lifting motor (1013) is connected to the shaft end of the uppermost lifting gear row (1012) for transmission.

4. The passivation device for surface treatment of a galvanized sheet according to claim 1, characterized by The flow guide shroud (103), the first liquid guide tube (102), and the second liquid guide tube (1021) are located on both sides of the tin-plated plate (3) in the direction of flow. The flow guide shroud (103) is a semi-circular arc-shaped plate.

5. The passivation device for surface treatment of a galvanized sheet according to claim 1, characterized by The passivation box (1) has 3-4 horizontally arranged water inlet pipe interfaces and water outlet pipe interfaces. The first liquid guide pipe (102) is equipped with a diversion pipe and connected to each water inlet pipe interface, and the second liquid guide pipe (1021) is equipped with a diversion pipe and connected to each water outlet pipe interface.

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