Defoaming device of alkali washing pool for zinc-aluminum-magnesium continuous hot dipping

Abstract

The utility model relates to an alkali wash pool defoaming device for zinc-aluminum-magnesium continuous hot dipping, which comprises a filter pool, an upper cover is arranged at the top of the filter pool, a portal frame is arranged on the outer side of the filter pool, a lifting driving device is mounted at the bottom of the portal frame, and the bottom of the lifting driving device penetrates through the upper cover and extends into the filter pool. A first defoaming mechanism is arranged in the filter tank, the top of the first defoaming mechanism is fixedly connected to the bottom of the lifting driving device, and defoaming holes and spikes are uniformly arranged on the first defoaming mechanism; the first defoaming mechanism is driven by the lifting driving device to ceaselessly lift in the filter tank to destroy and defoam foams gathered at the top of the filter tank, the foams are reduced by ceaselessly colliding with the foams through the defoaming holes and the spikes, and less foams are generated when water subjected to defoaming and filtering flows into the alkali washing tank again, so that a better alkali washing and oil removing effect is achieved.

Description

Technical Field

[0001] This utility model relates to a defoaming device for an alkaline washing tank used in continuous hot-dip galvanizing of zinc, aluminum and magnesium, and belongs to the field of this invention. Background Technology

[0002] Compared with traditional hot-dip galvanized and aluminized zinc products, zinc-aluminum-magnesium products have superior corrosion resistance. Furthermore, the zinc-aluminum-magnesium coating has high hardness, is thin and dense, and is less prone to zinc layer peeling during stamping, significantly increasing mold life and reducing surface defects. It also offers better protection against cuts and notches. Even in harsh corrosive environments, it maintains good corrosion resistance, can replace some color-coated steel sheets or products that are processed and then galvanized, and simplifies user processing procedures. In the long run, zinc-aluminum-magnesium alloy coated products are among the best energy-saving, material-saving, and environmentally friendly products.

[0003] For continuous zinc-aluminum-magnesium galvanized products on plates and strips, pretreatment for alkaline washing and degreasing is required inside the alkaline washing tank. During the alkaline washing process, a lot of foam is generated. When the water in the alkaline washing tank enters the filter tank, the foam accumulates at the top of the filter tank and is prone to overflow, causing nearby electrical equipment or water pumps to fail. Currently, defoaming is often achieved by adding defoaming agents to the alkaline washing tank or by using ultrasonic defoaming devices. However, adding defoaming agents will increase the cost of subsequent wastewater treatment, and ultrasonic defoaming devices are also expensive.

[0004] To address the aforementioned issues, this application proposes an alkaline washing tank defoaming device for continuous hot-dip zinc, aluminum, and magnesium plating. Utility Model Content

[0005] The present invention aims to overcome existing defects by providing a defoaming device for an alkaline washing tank in continuous hot-dip galvanizing of zinc, aluminum, and magnesium. The device reduces foam by continuously colliding with the foam through defoaming holes and spikes. When the water after defoaming filtration flows back into the alkaline washing tank, there is even less foam, thus achieving a better alkaline washing and degreasing effect. This effectively solves the problems in the background technology.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A defoaming device for an alkaline washing tank in continuous hot-dip galvanizing of zinc, aluminum, and magnesium includes a filter tank. A top cover is provided on the top of the filter tank, and a gantry frame is provided on the outside of the filter tank. A lifting drive device is installed at the bottom of the gantry frame. The bottom of the lifting drive device extends through the top cover into the filter tank. A first defoaming mechanism is provided inside the filter tank. The top of the first defoaming mechanism is fixedly connected to the bottom of the lifting drive device. Defoaming holes and spikes are evenly distributed on the first defoaming mechanism. The lifting drive device drives the first defoaming mechanism to continuously rise and fall inside the filter tank, breaking down and defoaming the foam accumulated at the top of the filter tank.

[0008] As a further improvement of this utility model, a connecting plate is fixedly provided in the middle position of the first defoaming mechanism, and a reinforcing plate is fixedly connected to the connecting plate.

[0009] As a further improvement of this utility model, the first defoaming mechanism is configured as a defoaming plate of a plate-shaped structure adapted to the internal structure of the filter tank, and the spikes are fixedly disposed at the top and bottom of the defoaming plate.

[0010] As a further improvement of this utility model, the first defoaming mechanism is configured as a screen, the defoaming hole is configured as a screen hole on the screen, and the spike is configured as a spike-like structure made of iron wire, the iron wire being wound around the screen.

[0011] As a further improvement of this utility model, a first extension cylinder is fixedly connected to the top of the upper cover, and a second defoaming mechanism is fixedly installed inside the first extension cylinder.

[0012] As a further improvement of this utility model, the second defoaming mechanism is configured as a sieve, and the interior of the second defoaming mechanism is provided with a clearance hole for the lifting drive device to pass through, and the second defoaming mechanism is provided with a barbed wire.

[0013] As a further improvement of this utility model, the top of the first extension cylinder is fixedly connected to and communicates with a second extension cylinder, the diameter of the second extension cylinder being smaller than the diameter of the first extension cylinder.

[0014] As a further improvement of this utility model, the lifting drive device is configured as a cylinder, hydraulic cylinder or screw drive mechanism.

[0015] The beneficial effects of this utility model are as follows: A defoaming device for an alkaline washing tank in continuous hot-dip galvanizing of zinc, aluminum and magnesium uses a driving lifting device to drive a first defoaming mechanism with defoaming holes and spikes to move up and down continuously at the top of the filtration tank. The defoaming holes and spikes continuously collide with the foam to reduce the foam. Compared with adding defoaming agents or ultrasonic defoaming, this method is more environmentally friendly and has a lower cost. When the water after defoaming and filtration flows back into the alkaline washing tank, there is even less foam, thus achieving a better alkaline washing and degreasing effect. Attached Figure Description

[0016] The accompanying drawings are provided to further understand 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 and do not constitute a limitation thereof.

[0017] Figure 1 This is a structural diagram of an alkaline washing tank defoaming device for continuous hot-dip galvanizing of zinc, aluminum and magnesium.

[0018] Figure 2 This is a structural diagram of the first defoaming mechanism in an alkaline washing tank defoaming device for continuous hot-dip zinc-aluminum-magnesium plating according to this utility model.

[0019] Figure 3 This utility model relates to an alkaline washing tank defoaming device for continuous hot-dip zinc, aluminum, and magnesium plating. Figure 2 Enlarged structural diagram of section A in the middle.

[0020] Figure 4 This is a cross-sectional structural diagram of an alkaline washing tank defoaming device for continuous hot-dip galvanizing of zinc, aluminum and magnesium.

[0021] Figure 5 This is a structural diagram of the second defoaming mechanism in an alkaline washing tank defoaming device for continuous hot-dip zinc-aluminum-magnesium plating according to this utility model.

[0022] The following are the labels in the diagram: 1. Alkaline washing tank; 2. Gantry frame; 3. Lifting drive device; 4. Top cover; 5. First defoaming mechanism; 6. Reinforcing plate; 7. Connecting plate; 8. Defoaming plate; 9. Defoaming hole; 10. Spike; 11. First extension cylinder; 12. Second defoaming mechanism; 13. Second extension cylinder; 14. Clearance hole. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. It is understandable for those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To make the technical means, creative features, and achieved objectives and effects of this utility model easy to understand, it should be noted in the description of this utility model that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The utility model will be further described below in conjunction with specific embodiments.

[0025] Example

[0026] like Figures 1-5As shown, a defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating includes a filter tank 1 with a top cover 4. The filter tank 1 is connected to an alkaline washing tank for pretreatment alkaline washing and degreasing via a water pump and pipeline. Water from the alkaline washing tank enters the filter tank 1 through the pump and pipeline for sedimentation and filtration. Since a large amount of foam is generated during the alkaline washing process, the foam accumulation on the surface of the alkaline washing tank affects the degreasing effect. After entering the filter tank, the foam remains and accumulates at the top, easily overflowing and potentially damaging nearby electrical equipment or water pumps. In case of failure, a gantry frame 2 is provided on the outside of the filter pool 1, and a lifting drive device 3 is installed at the bottom of the gantry frame 2. The bottom of the lifting drive device 3 extends through the top cover 4 and into the interior of the filter pool 1. A first defoaming mechanism 5 is provided inside the filter pool 1. The top of the first defoaming mechanism 5 is fixedly connected to the bottom of the lifting drive device 3. Defoaming holes 9 and spikes 10 are evenly provided on the first defoaming mechanism 5. The lifting drive device 3 drives the first defoaming mechanism 5 to continuously rise and fall inside the filter pool 1 to destroy and defoam the foam accumulated at the top of the filter pool 1.

[0027] By using a driving lifting device 3 to drive the first defoaming mechanism 5, which has defoaming holes 9 and spikes 10, to move up and down continuously at the top of the filter tank 1, the defoaming holes 9 and spikes 10 continuously collide with the foam to reduce the foam. Compared with adding defoaming agents or ultrasonic defoaming, this method is more environmentally friendly and also lower in cost. When the water after defoaming filtration flows back into the alkaline washing tank, there is less foam, thus achieving a better alkaline washing and oil removal effect.

[0028] In some alternative embodiments, a connecting plate 7 is fixedly provided at the middle position of the first defoaming mechanism 5, and a reinforcing plate 6 is fixedly connected to the connecting plate 7. The connecting plate 7 is used to install and connect with the lifting drive device 3, for example, by using a flange for connection. The reinforcing plate 6 serves as the skeleton of the first defoaming mechanism 5 to improve the structural strength.

[0029] like Figure 2 , Figure 3 As shown, specifically, the first defoaming mechanism 5 is a defoaming plate 8 that is adapted to the internal structure of the filter tank 1. For example, if the filter tank 1 is a cuboid tank, then the defoaming plate 8 is a cuboid plate structure, and the spikes 10 are fixedly installed at the top and bottom of the defoaming plate 8.

[0030] In some alternative embodiments, the first defoaming mechanism 5 is configured as a screen, the defoaming hole 9 is configured as a screen hole on the screen, and the spike 10 is configured as a spike-like structure made of iron wire. The iron wire is wound around the screen, and by winding the iron wire on the screen hole, a spiked screen structure is formed, which can also eliminate foam by collision or puncture.

[0031] In some alternative embodiments, a first extension tube 11 is fixedly connected to the top of the upper cover 4, and a second defoaming mechanism 12 is fixedly disposed inside the first extension tube 11.

[0032] like Figure 5 As shown, the second defoaming mechanism 12 is further configured as a screen, and the second defoaming mechanism 12 has an avoidance hole 14 for the lifting drive device 3 to pass through. The second defoaming mechanism 12 is provided with barbed wire.

[0033] Furthermore, the top of the first extension tube 11 is fixedly connected to and communicates with a second extension tube 13, the diameter of the second extension tube 13 being smaller than the diameter of the first extension tube 11.

[0034] When considering the actual situation, if there is too much foam, a first extension tube 11 is set on the top of the upper cover 4, and a second defoaming mechanism 12 is set inside the first extension tube 11 to further puncture the excessive foam that is about to overflow. The first extension tube 11 is further sealed by the second extension tube 13 to increase the liquid level and further reduce the risk of foam overflow.

[0035] In some alternative embodiments, the lifting drive device 3 is configured as a cylinder, hydraulic cylinder, or screw drive mechanism.

[0036] The above are preferred embodiments of the present invention. The basic principles, main features, and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope thereof. All such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A defoaming device for an alkaline washing tank in continuous hot-dip galvanizing of zinc, aluminum, and magnesium, comprising a filter tank (1), wherein the top of the filter tank (1) is provided with a top cover (4), characterized in that: A gantry frame (2) is provided on the outside of the filter pool (1). A lifting drive device (3) is installed at the bottom of the gantry frame (2). The bottom of the lifting drive device (3) extends through the top cover (4) and into the filter pool (1). A first defoaming mechanism (5) is provided inside the filter pool (1). The top of the first defoaming mechanism (5) is fixedly connected to the bottom of the lifting drive device (3). Defoaming holes (9) and spikes (10) are evenly provided on the first defoaming mechanism (5). The lifting drive device (3) drives the first defoaming mechanism (5) to continuously rise and fall inside the filter pool (1) to destroy and defoam the foam accumulated at the top of the filter pool (1).

2. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 1, characterized in that: A connecting plate (7) is fixedly installed in the middle of the first defoaming mechanism (5), and a reinforcing plate (6) is fixedly connected to the connecting plate (7).

3. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 2, characterized in that: The first defoaming mechanism (5) is configured as a defoaming plate (8) of a plate-shaped mechanism adapted to the internal structure of the filter tank (1), and the spikes (10) are fixedly arranged at the top and bottom of the defoaming plate (8).

4. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 1, characterized in that: The first defoaming mechanism (5) is configured as a screen, the defoaming hole (9) is configured as a screen hole on the screen, and the spike (10) is configured as a spike-like structure made of iron wire, the iron wire being wound around the screen.

5. The defoaming device for an alkaline washing tank in continuous hot-dip galvanizing of zinc, aluminum, and magnesium as described in claim 1, characterized in that: The top of the cover (4) is fixedly connected to a first extension tube (11), and a second defoaming mechanism (12) is fixedly installed inside the first extension tube (11).

6. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 5, characterized in that: The second defoaming mechanism (12) is configured as a screen, and the second defoaming mechanism (12) has an avoidance hole (14) for the lifting drive device (3) to pass through. The second defoaming mechanism (12) is provided with a barbed wire.

7. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 6, characterized in that: The top of the first extension tube (11) is fixedly connected to and connected to a second extension tube (13), the diameter of the second extension tube (13) being smaller than the diameter of the first extension tube (11).

8. The defoaming device for an alkaline washing tank in continuous hot-dip zinc-aluminum-magnesium plating according to claim 1, characterized in that: The lifting drive device (3) is configured as a cylinder, hydraulic cylinder or screw drive mechanism.

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