Zinc melting device for hot galvanizing

Abstract

The utility model relates to the technical field of hot galvanizing, in particular to a hot galvanizing zinc melting device which comprises a rectangular galvanizing bath, a resistance furnace is arranged on the outer side of the galvanizing bath, a heat insulation protective cover is arranged on the outer side of the resistance furnace, outer protruding blocks are fixedly arranged at the positions, close to the top, of the two long edges of the galvanizing bath, the outer protruding blocks are of an arc-shaped outwards-protruding structure, and openings are formed in the outer protruding blocks. And a zinc slag collecting box is placed on the outer side of the outer convex block corresponding to the opening. According to the utility model, the outer convex block is arranged on the galvanizing bath, and the opening is matched with the zinc slag collecting box for use, so that zinc slag can be directly fished to the position of the outer convex block and then flows into the zinc slag collecting box through the opening without passing through the opening edge of the galvanizing bath, thereby preventing the zinc slag from dripping on the opening edge.

Description

Technical Field

[0001] This utility model relates to the field of hot-dip galvanizing technology, specifically to a hot-dip galvanizing zinc melting device. Background Technology

[0002] Hot-dip galvanizing, also known as hot-dip zinc plating, is a metal surface treatment technology. The treated metal workpiece is immersed in a hot-dip galvanizing bath, where it is coated with a dense and uniform zinc layer through the reaction and diffusion between iron and zinc. Hot-dip galvanizing offers advantages such as uniform coating, strong adhesion, and long service life.

[0003] Hot-dip galvanizing requires heating metallic zinc to a molten state. Currently, the galvanizing industry mostly heats the zinc directly to a molten state in a galvanizing tank or pot through induction heating, high-temperature gas combustion, or other methods. During the galvanizing process, when the workpiece is placed in the zinc liquid, a large amount of zinc oxide dross is generated. This dross needs to be skimmed off to avoid affecting the galvanizing effect. There are various tools for removing zinc dross, but it is basically done manually. During the removal process, zinc dross inevitably drips onto the rim of the galvanizing tank or pot, which accumulates over time and requires constant cleaning. At the same time, the zinc dross begins to cool and solidify after being removed, increasing the difficulty of cleaning. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A hot-dip galvanizing zinc melting device includes a rectangular galvanizing tank, an electric resistance furnace installed on the outside of the galvanizing tank, a heat insulation protective cover installed on the outside of the electric resistance furnace, and an outer protrusion fixedly installed on the top position of the two long sides of the galvanizing tank. The outer protrusion is set with an arc-shaped outward protrusion structure and an opening on the outer protrusion. A zinc dross collection box is placed on the outside of the outer protrusion corresponding to the opening position.

[0006] Furthermore, a placement frame is fixedly installed on the top of the heat-insulating protective cover at the location of the zinc dross collection box, and the zinc dross collection box is placed inside the placement frame. The placement frame specifies the placement position of the zinc dross collection box and also prevents it from being moved arbitrarily.

[0007] Furthermore, a stop block is placed in the gap between the zinc dross collection box and the placement frame, and hooks are fixedly installed on both the stop block and the top of the zinc dross collection box. The stop block further constrains the zinc dross collection box, ensuring it is stably and reliably attached to the outer protrusion, thus ensuring that the zinc dross can flow steadily into the zinc dross collection box. The hooks facilitate operation using tools.

[0008] Furthermore, multiple rectangular cover plates are placed on the top of the galvanizing tank from both short sides towards the middle. Holes are formed on the two long sides of each cover plate, through which insert shafts one and two are threaded. Hinges are installed on the insert shafts one and two between the multiple cover plates, connecting them end-to-end. A hole is formed at the front end of the cover plate near the middle of the galvanizing tank, through which insert shaft three is threaded. Tracks are installed on the outer sides of the two short sides of the cover plates, each with a pre-set sliding cavity. Fixing sleeves are fixedly installed in the sliding cavities corresponding to the ends of the galvanizing tank. Insert shaft two of the cover plates near the ends of the galvanizing tank is fitted into the fixing sleeves and fixed. Both ends of insert shaft two extend into the sliding cavities and slide along the track bars. Both ends of insert shaft three pass through the corresponding sliding cavities. Because the galvanizing tank is large, it lacks a lid like a galvanizing pot for covering, leading to significant heat loss. The cover plates cover the top of the galvanizing tank, reducing heat loss.

[0009] Furthermore, threaded sleeves are fixedly installed at both ends of the insert shaft three. A lead screw is installed on the outer side of the track bar at the horizontal height corresponding to the threaded sleeve. Shaft seats are fixedly installed on the side of the track bar at both ends corresponding to the lead screw. The lead screw is installed on the shaft seats and threadedly connected to the threaded sleeve. A motor is installed at one end of the lead screw, and the output end of the motor is fixedly connected to the lead screw. The motor is fixed to the top of the heat insulation protective cover at the corresponding position via a frame. The track bar is fixed to the top of the heat insulation protective cover at the corresponding position via a support frame. The cooperation between the lead screw and the threaded sleeve, along with the cooperation between each insert shaft and the track bar, allows the motor to drive the lead screw to rotate, which can lay the cover plate flat or fold it vertically for easy use and operation.

[0010] Furthermore, a slag-blocking plate is placed at the top opening of the galvanizing tank, extending into the galvanizing tank. When there is not much zinc slag or when hot-dip galvanizing is in progress, the zinc slag is generally not scooped out; it is usually skimmed to the corner of the galvanizing tank. In this case, the slag-blocking plate can prevent the zinc slag from flowing back into the galvanizing area.

[0011] Furthermore, both ends of the slag-blocking plate are threaded with adjusting screws. These screws are used to adjust the height of the slag-blocking plate to accommodate different zinc liquid heights in the galvanizing tank.

[0012] Furthermore, fixing blocks are fixedly installed at both ends of the top of the slag-blocking plate. Threaded blocks are provided on the outer sides of both fixing blocks, and holes are formed on the threaded blocks on both sides. Adjusting screws are threadedly connected to the threaded blocks through these holes. Holes are also formed on the fixing blocks corresponding to the positions of the threaded blocks, and hinge shafts passing through these holes are fixedly installed on the threaded blocks. The threaded blocks and the hinge shafts of the fixing blocks are hinged together, allowing the slag-blocking plate to rotate. This means that when skimming zinc slag, the slag-blocking plate can be rotated to skim the slag over without needing to lift the plate, making operation easier.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses an external protrusion on the galvanizing tank with an opening to be used with a zinc dross collection box. The zinc dross can be directly scooped up to the external protrusion and then flow into the zinc dross collection box through the opening, without having to pass through the rim of the galvanizing tank, thus avoiding the zinc dross dripping onto the rim.

[0015] 2. This utility model reduces heat loss by installing a cover plate at the top of the galvanizing tank, thereby increasing the melting rate of zinc and reducing energy consumption.

[0016] 3. In this utility model, the power transmission is achieved by using a lead screw and a motor, which can drive the cover plate to be laid flat on the galvanizing tank or folded up, which facilitates operation. At the same time, the normal galvanizing operation is not affected when the cover plate is folded up.

[0017] 4. By setting up a slag baffle, this utility model can separate the skimmed zinc slag from the galvanizing area, preventing zinc slag from drifting into the galvanizing area and affecting the galvanizing effect. In addition, the height of the slag baffle can be adjusted to match the height of the zinc liquid, making it convenient to use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the zinc slag collection box in this utility model;

[0021] Figure 4 This is a diagram showing the folded and stowed state of the cover plate in this utility model;

[0022] Figure 5 This is a schematic diagram of the installation of the cover plate in this utility model;

[0023] Figure 6 This is a schematic diagram of the installation of the slag baffle in this utility model.

[0024] Reference numerals in the attached diagram: 1. Galvanizing tank; 2. Resistance furnace; 3. Heat insulation cover; 4. Zinc dross collection box; 5. Outer protrusion; 6. Placement frame; 7. Stop block; 8. Hook ring; 9. Cover plate; 10. Insert shaft one; 11. Insert shaft two; 12. Hinge buckle; 13. Insert shaft three; 14. Track bar; 15. Sliding cavity; 16. Threaded sleeve; 17. Lead screw; 18. Shaft seat; 19. Fixing sleeve; 20. Motor; 21. Frame; 22. Support frame; 23. Slag baffle plate; 24. Fixing block; 25. Threaded block; 26. Hinge shaft; 27. Adjusting screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0026] This application provides a hot-dip galvanizing zinc melting device, mainly solving the problem that zinc dross inevitably drips onto the edge of the galvanizing tank during dross removal, and provides the following technical solution, which will be discussed below. Figure 1 - Figure 6 Please provide a detailed explanation:

[0027] A hot-dip galvanizing zinc melting device includes a galvanizing tank 1, an electric resistance furnace 2 installed on the outside of the galvanizing tank 1, and a heat insulation protective cover 3 installed on the outside of the electric resistance furnace 2. The electric resistance furnace 2 heats the metallic zinc in the galvanizing tank 1 to a molten state. The electric resistance furnace 2 belongs to the existing crucible melting furnace category. The heat insulation protective cover 3 provides enclosed protection for the electric resistance furnace 2. The galvanizing tank 1 is rectangular. On the two long sides of the galvanizing tank 1, near the top position, an external protrusion 5 is fixedly installed. The external protrusion 5 is an arc-shaped external protrusion structure with an opening on the external protrusion 5. A zinc dross collection box 4 is placed on the outside of the external protrusion 5 corresponding to the opening position.

[0028] When scooping out zinc dross, skim the dross to the position of the outer protrusion 5, and then scoop it up along the inner wall of the galvanizing tank 1. Scoop the dross to the opening of the outer protrusion 5 so that the dross flows into the zinc dross collection box 4 through the opening. The dross does not pass through the top edge of the galvanizing tank 1, thus avoiding the dross from dripping from the edge. After a certain amount of zinc dross has been scooped out, remove the zinc dross collection box 4, empty the dross inside, and then put it back in.

[0029] In some embodiments, a placement frame 6 is fixedly installed on the top of the heat insulation cover 3 at the zinc dross collection box 4, the zinc dross collection box 4 is placed inside the placement frame 6, and a stop block 7 is placed in the gap between the zinc dross collection box 4 and the placement frame 6. Hook rings 8 are fixedly installed on both the stop block 7 and the top of the zinc dross collection box 4.

[0030] The placement frame 6 restricts the movement of the zinc dross collection box 4. With the help of the stop block 7, the zinc dross collection box 4 can be pushed against the outer protrusion 5, thereby ensuring that the zinc dross can flow steadily into the zinc dross collection box 4. When taking out the zinc dross collection box 4, first take out the stop block 7, and then take out the zinc dross collection box 4. You can use a tool to hook it directly from the hook 8 position to avoid direct hand operation that may cause burns.

[0031] In some embodiments, multiple cover plates 9 are placed on the top of the galvanizing tank 1 from the two short sides toward the middle. The cover plates 9 are rectangular. The two long sides of the cover plates 9 are respectively provided with holes and insert shaft 10 and insert shaft 2 11. The length of insert shaft 10 is less than the length of insert shaft 2 11. Hinges 12 are installed on insert shaft 10 and insert shaft 2 11 between the multiple cover plates 9. The multiple cover plates 9 are connected end to end by hinges 12.

[0032] A hole is opened at the front end of the cover plate 9 near the middle of the galvanizing tank 1, and a third insert shaft 13 passes through it. Tracks 14 are installed on the outer sides of the two short sides of the cover plate 9. A sliding cavity 15 is pre-set inside the track 14. A fixing sleeve 19 is fixedly installed in the sliding cavity 15 corresponding to the end of the galvanizing tank 1. The second insert shaft 11 of the cover plate 9 near both ends of the galvanizing tank 1 is fitted into the fixing sleeve 19 and fixed. Both ends of the second insert shaft 11 extend into the sliding cavity 15 and slide against the track 14. Both ends of the third insert shaft 13 pass through the corresponding sliding cavity 15, and both ends of the third insert shaft 13 are fixed. A threaded sleeve 16 is fixedly installed. A lead screw 17 is installed on the outer side of the track bar 14 at the horizontal height position corresponding to the threaded sleeve 16. A shaft seat 18 is fixedly installed on both ends of the lead screw 17 on the side of the track bar 14. The lead screw 17 is installed on the shaft seat 18 and is threadedly connected to the threaded sleeve 16. A motor 20 is installed on one end of the lead screw 17. The output end of the motor 20 is fixedly connected to the lead screw 17. The motor 20 is fixed to the top of the heat insulation cover 3 at the corresponding position through the frame 21. The track bar 14 is fixed to the top of the heat insulation cover 3 at the corresponding position through the support frame 22.

[0033] When heating metallic zinc, the motor 20 can operate to drive the lead screw 17 to rotate. Utilizing the threaded connection between the lead screw 17 and the threaded sleeve 16, and with the fixed relationship between each insert shaft and the cover plate 9, the cover plate 9 is opened by the limited sliding of the insert shaft 11 within the sliding cavity 15, covering the top of the galvanizing tank 1 to form a cover, reducing heat loss in the galvanizing tank 1 and increasing the melting speed of zinc. After heating is completed, the motor 20 reverses to drive the lead screw 17 to reverse, thereby vertically retracting the originally flat cover plate 9 and removing it from the galvanizing tank 1, without affecting subsequent hot-dip galvanizing operations.

[0034] In some embodiments, a slag baffle 23 is placed at the top opening of the galvanizing tank 1, the slag baffle 23 extends into the galvanizing tank 1, and a fixing block 24 is fixedly installed at both ends of the top of the slag baffle 23. Threaded blocks 25 are provided on the outer sides of the fixing blocks 24 at both ends, and adjusting screws 27 are threadedly connected to the threaded blocks 25 on both sides. Holes are opened on the fixing blocks 24 corresponding to the positions of the threaded blocks 25, and hinge shafts 26 passing through the holes are fixedly installed on the threaded blocks 25.

[0035] The slag baffle 23 is used to separate zinc oxide or other residues on the surface of the molten zinc to prevent them from drifting to the galvanized workpiece area. Using existing tools, the zinc slag is pushed to the position of the slag baffle 23. Then, the hinge pin 26 is used to fix the slag baffle 23 by hinge. The slag baffle 23 is pushed to rotate, pushing the zinc slag to the other side of the slag baffle 23. Then the slag baffle 23 is released to separate the zinc slag. The height of the slag baffle 23 can be adjusted by rotating the adjusting screw 27, which can be adjusted according to the height of the molten zinc.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot-dip galvanizing melting device, comprising a rectangular galvanizing tank (1), an electric resistance furnace (2) installed outside the galvanizing tank (1), and a heat-insulating protective cover (3) installed outside the electric resistance furnace (2), characterized in that, The galvanizing tank (1) has two long sides with external protrusions (5) fixedly installed near the top. The external protrusions (5) are arranged in an arc-shaped external protrusion structure with an opening on the top. A zinc slag collection box (4) is placed on the outside of the external protrusions (5) at the corresponding opening position.

2. The hot-dip galvanizing zinc melting device according to claim 1, characterized in that, A placement frame (6) is fixedly installed on the top of the heat insulation protective cover (3) at the location of the zinc slag collection box (4), and the zinc slag collection box (4) is placed inside the placement frame (6).

3. The hot-dip galvanizing zinc melting device according to claim 2, characterized in that, A stop block (7) is placed in the gap between the zinc slag collection box (4) and the placement frame (6). Hooks (8) are fixedly installed on the top of both the stop block (7) and the zinc slag collection box (4).

4. The hot-dip galvanizing zinc melting device according to claim 1, characterized in that, Multiple cover plates (9) are placed on the top of the galvanizing tank (1) from the two short sides toward the middle. The cover plates (9) are rectangular. The two long sides of the cover plates (9) are respectively provided with holes through which insert shaft one (10) and insert shaft two (11) pass. Hinges (12) are installed on insert shaft one (10) and insert shaft two (11) between the multiple cover plates (9). The multiple cover plates (9) are connected end to end by hinges through the hinges (12). The front end of the cover plate (9) near the middle of the galvanizing tank (1) is provided with a hole through which insert shaft three (13) passes. ), a track bar (14) is installed on the outer side of the two short sides of the cover plate (9). A sliding cavity (15) is preset in the track bar (14). A fixing sleeve (19) is fixedly installed in the sliding cavity (15) corresponding to the end of the galvanizing tank (1). The second insert shaft (11) of the cover plate (9) near the two ends of the galvanizing tank (1) is sleeved into the fixing sleeve (19) and fixed. The two ends of the second insert shaft (11) extend into the sliding cavity (15) and slide to support the track bar (14). The two ends of the third insert shaft (13) pass through the corresponding sliding cavity (15).

5. A hot-dip galvanizing zinc melting device according to claim 4, characterized in that, Both ends of the insert shaft (13) are fixedly installed with threaded sleeves (16). A lead screw (17) is installed on the outside of the track bar (14) at the horizontal height position corresponding to the threaded sleeve (16). A bearing seat (18) is fixedly installed on both ends of the track bar (14) corresponding to the lead screw (17). The lead screw (17) is installed on the bearing seat (18). The lead screw (17) is threadedly connected to the threaded sleeve (16). A motor (20) is installed at one end of the lead screw (17). The output end of the motor (20) is fixedly connected to the lead screw (17). The motor (20) is fixed to the top of the heat insulation cover (3) at the corresponding position through the frame (21). The track bar (14) is fixed to the top of the heat insulation cover (3) at the corresponding position through the support frame (22).

6. The hot-dip galvanizing zinc melting device according to claim 1, characterized in that, A slag baffle (23) is placed at the top of the galvanizing tank (1), and the slag baffle (23) extends into the galvanizing tank (1).

7. A hot-dip galvanizing zinc melting device according to claim 6, characterized in that, Both ends of the slag baffle (23) are threaded with adjusting screws (27).

8. The hot-dip galvanizing zinc melting device according to claim 7, characterized in that, The top two ends of the slag baffle (23) are fixedly installed with fixing blocks (24). The outer sides of the fixing blocks (24) at both ends are provided with threaded blocks (25). Holes are opened on the threaded blocks (25) on both sides. The adjusting screw (27) is threadedly connected to the threaded block (25) through the hole. Holes are opened on the fixing block (24) corresponding to the position of the threaded block (25). A hinge shaft (26) passing through the hole is fixedly installed on the threaded block (25).

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