A low-temperature zinc ingot preheating melting device

Abstract

The utility model discloses a kind of for low-temperature zinc ingot preheating melting device, including hot melting furnace and be equipped at the bottom of hot melting furnace and discharge pipe, the upper end of hot melting furnace is connected with preheating mechanism, and hot melting furnace is equipped with deslagging mechanism, the lateral wall of hot melting furnace is fixed with deslagging pipe;The preheating mechanism is composed of preheating bucket, clamping groove and solenoid, wherein, preheating bucket is fixed in the upper end of hot melting furnace, and the bottom of preheating bucket is communicated with hot melting furnace, the clamping groove is along annularly distributed in preheating bucket, and the solenoid is equipped on the inner wall of preheating bucket;The deslagging mechanism includes rotatingly connected in the upper end of hot melting furnace and shaft, the lateral wall of the shaft is fixed with helical lifting blade, and helical lifting blade is uniformly distributed with filter hole.The utility model belongs to zinc ingot hot melting technical field, and specifically is a kind of for low-temperature zinc ingot preheating melting device.

Description

Technical Field

[0001] This utility model belongs to the field of zinc ingot hot melting technology, specifically referring to a device for preheating and melting low-temperature zinc ingots. Background Technology

[0002] In the hot-dip galvanizing process, the molten zinc in the zinc pot is continuously consumed, requiring a constant replenishment of zinc ingots to maintain process stability. Currently, the commonly used method is to directly feed the zinc ingots into the zinc pot using various tools, relying on the temperature of the molten zinc to slowly melt them. This traditional method has significant drawbacks: the zinc ingots are typically at room temperature (approximately 25°C) before being placed in the zinc pot, while the zinc pot operates at a high temperature (approximately 460°C). The cold zinc ingots entering the pot drastically lower the temperature of the molten zinc, leading to a large amount of zinc dross precipitation and poor wettability of the molten zinc, severely impacting the surface quality of the galvanized products.

[0003] To maintain a reasonable zinc bath temperature, the induction heating device needs to be frequently started during production. This not only increases energy consumption, but also intensifies the flow and stirring of the zinc bath, causing zinc dross to rise and affecting product quality. In addition, due to process requirements, a small amount of aluminum needs to be added to the zinc bath to remove iron impurities. However, inside the furnace, these continuously rising trace amounts of aluminum and aluminum-iron alloy dross cannot be effectively removed from the furnace, seriously affecting the quality of the zinc bath.

[0004] Therefore, there is an urgent need to develop a new type of zinc ingot preheating and melting device that can effectively solve the above problems, achieve low-temperature preheating and uniform heating of zinc ingots, reduce temperature fluctuations and zinc dross generation, and improve the quality of galvanized products and production efficiency. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides a device for preheating and melting low-temperature zinc ingots, which solves the problems of large temperature fluctuations in zinc liquid, excessive zinc dross production, high energy consumption, and affected product quality caused by directly adding zinc ingots to the zinc pot in the prior art.

[0006] The technical solution adopted by this utility model is as follows: This utility model proposes a device for preheating and melting low-temperature zinc ingots, including a hot melt furnace and a discharge pipe located at the bottom of the hot melt furnace. The upper end of the hot melt furnace is connected to a preheating mechanism, and a slag removal mechanism is provided inside the hot melt furnace. A slag discharge pipe is fixed on the side wall of the hot melt furnace. The preheating mechanism consists of a preheating barrel, a slot, and an electromagnetic coil. The preheating barrel is fixed to the upper end of the hot melt furnace, and the bottom of the preheating barrel is connected to the hot melt furnace. The slot is evenly distributed in a ring inside the preheating barrel, and the electromagnetic coil is located on the inner wall of the preheating barrel. The slag removal mechanism includes a rotating shaft rotatably connected to the upper end of the hot melt furnace. Spiral lifting blades are fixed on the side wall of the rotating shaft, and filter holes are evenly distributed on the spiral lifting blades.

[0007] As an improvement to this solution, two parallel limiting ring rails are fixed on the inner wall of the preheating barrel. Each set of slots is connected and fixed as a whole by two supporting rotating rings, and the supporting rotating rings are slidably connected to the limiting ring rails. Four sets of mutually symmetrical drive connecting plates are fixed at the upper end of the supporting rotating rings. A rotating motor is provided at the upper end of the preheating barrel, and the output shaft of the rotating motor is fixedly connected to the connection point of the four sets of drive connecting plates.

[0008] As an improvement to this solution, a supporting shell is fixed to the upper end of the hot melt furnace. A lifting motor is provided at the upper end of the supporting shell, and the output shaft of the lifting motor passes through the supporting shell and is located inside the supporting shell. Synchronous pulleys are provided at the output end of the lifting motor and the upper end of the rotating shaft, and the two synchronous pulleys are connected by a synchronous belt.

[0009] As an improvement to this solution, a rectangular through slot is provided on the side of the card slot near the electromagnetic coil, and a baffle is fixed on the side symmetrical to the through slot on the card slot. A bracket is fixed at the upper end of the supporting shell, and a cylinder is fixed at the upper end of the bracket. The output end of the cylinder passes through the preheating barrel and is located inside the preheating barrel, and a shaft seal is provided between the output end of the cylinder and the preheating barrel.

[0010] As an improvement to this solution, the hot melt furnace consists of a heating inner furnace, an insulating outer shell, and a vacuum chamber. The insulating outer shell is fixed to the outer wall of the heating inner furnace, and the vacuum chamber is located between the heating inner furnace and the insulating outer shell. A vacuum valve nozzle is fixed on the side wall of the insulating outer shell and is connected to the vacuum chamber.

[0011] As an improvement to this solution, the upper end of the preheating barrel is provided with a feeding port, which is located above the slot, and the side wall of the hot melting furnace is provided with a manhole cover.

[0012] The beneficial effects of this utility model by adopting the above structure are as follows:

[0013] 1. The slag removal mechanism can remove impurities generated during the melting process in a timely manner, avoiding affecting product quality. The slow rotation of the mechanism can also make the zinc liquid heat evenly, thereby improving the melting efficiency. Combined with the vacuum chamber and heat preservation shell, energy consumption can be effectively reduced.

[0014] 2. It is equipped with a preheating mechanism, which can preheat the zinc ingots to prevent temperature fluctuations in the furnace when they enter the melting furnace, thereby avoiding zinc dross from affecting product quality. At the same time, the rotatable slot can ensure that the zinc ingots are heated evenly, which is convenient for subsequent melting after addition. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a low-temperature zinc ingot preheating and melting device proposed in this utility model;

[0016] Figure 2 This is a cross-sectional view of a low-temperature zinc ingot preheating and melting device proposed in this utility model;

[0017] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0018] Figure 4 This is a partial structural diagram of the slag removal mechanism components in this embodiment;

[0019] Figure 5 This is a schematic diagram of the internal structure of the preheating mechanism component in this embodiment.

[0020] The components include: 1. Hot melt furnace; 2. Discharge pipe; 3. Preheating mechanism; 4. Slag removal mechanism; 5. Slag discharge pipe; 6. Preheating tank; 7. Slot; 8. Electromagnetic coil; 9. Rotating shaft; 10. Spiral lifting blades; 11. Filter holes; 12. Limiting ring rail; 13. Supporting rotating ring; 14. Drive connecting plate; 15. Rotating motor; 16. Support shell; 17. Lifting motor; 18. Synchronous pulley; 19. Synchronous belt; 20. Baffle; 21. Bracket; 22. Cylinder; 23. Heating inner furnace; 24. Insulation shell; 25. Vacuum chamber; 26. Vacuum valve; 27. Feeding port; 28. Manhole cover.

[0021] 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. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-5 As shown, the present invention proposes a device for preheating and melting low-temperature zinc ingots, including a hot melt furnace 1 and a discharge pipe 2 located at the bottom of the hot melt furnace 1. A preheating mechanism 3 is connected to the upper end of the hot melt furnace 1, and a slag removal mechanism 4 is provided inside the hot melt furnace 1. A slag discharge pipe 5 is fixed on the side wall of the hot melt furnace 1.

[0024] The preheating mechanism 3 consists of a preheating barrel 6, a slot 7, and an electromagnetic coil 8. The preheating barrel 6 is fixed to the upper end of the hot melt furnace 1, and the bottom of the preheating barrel 6 is connected to the hot melt furnace 1. The slot 7 is evenly distributed in the preheating barrel 6 along a ring. The electromagnetic coil 8 is located on the inner wall of the preheating barrel 6.

[0025] The slag removal mechanism 4 includes a rotating shaft 9 rotatably connected to the upper end of the hot melt furnace 1. A spiral lifting blade 10 is fixed on the side wall of the rotating shaft 9, and filter holes 11 are evenly distributed on the spiral lifting blade 10.

[0026] The zinc ingots can be heated by the preheating mechanism 3 before being sent into the hot melt furnace 1, thereby reducing the impact on the temperature inside the hot melt furnace 1 during the entire process and improving the quality of the zinc liquid.

[0027] To achieve uniform heating of the slot 7 and the zinc ingots thereon, such as Figure 2 and Figure 3 Two parallel limiting ring rails 12 are fixed on the inner wall of the preheating barrel 6. Each set of slots 7 is connected and fixed as a whole by two supporting rotating rings 13. The supporting rotating rings 13 are slidably connected to the limiting ring rails 12. Four sets of mutually symmetrical drive connecting plates 14 are fixed at the upper end of the supporting rotating rings 13. A rotating motor 15 is provided at the upper end of the preheating barrel 6, and the output shaft of the rotating motor 15 is fixedly connected to the connection point of the four sets of drive connecting plates 14.

[0028] like Figure 1 , Figure 2 and Figure 4 As shown, a support shell 16 is fixed at the upper end of the hot melt furnace 1. A lifting motor 17 is provided at the upper end of the support shell 16, and the output shaft of the lifting motor 17 passes through the support shell 16 and is located inside the support shell 16. Synchronous pulleys 18 are provided at the output end of the lifting motor 17 and the upper end of the rotating shaft 9, and the two synchronous pulleys 18 are connected by a synchronous belt 19.

[0029] like Figure 5 A rectangular through slot is provided on the side of the slot 7 near the electromagnetic coil 8, and a baffle 20 is fixed on the side symmetrical to the through slot 7. A bracket 21 is fixed on the upper end of the supporting shell 16, and a cylinder 22 is fixed on the upper end of the bracket 21. The output end of the cylinder 22 passes through the preheating barrel 6 and is located inside the preheating barrel 6. A shaft seal is provided between the output end of the cylinder 22 and the preheating barrel 6.

[0030] To reduce energy consumption during melting, the hot melt furnace 1 consists of a heating inner furnace 23, an insulating outer shell 24, and a vacuum chamber 25. The insulating outer shell 24 is fixed to the outer wall of the heating inner furnace 23, and the vacuum chamber 25 is located between the heating inner furnace 23 and the insulating outer shell 24. A vacuum valve nozzle 26 is fixed on the side wall of the insulating outer shell 24, and the vacuum valve nozzle 26 is connected to the vacuum chamber 25.

[0031] The preheating barrel 6 is provided with a feeding port 27 at the upper end, and the feeding port 27 is located above the slot 7. The hot melt furnace 1 is provided with a manhole cover 28 on its side wall.

[0032] In practical use, the slag discharge pipe 5 on the side wall of the hot melt furnace 1 is connected to the external recycling equipment. Then, zinc ingots are added by opening the top cover of the feeding port 27, allowing them to fall into the slot 7 below under gravity along the inner wall of the feeding port 27. Under the action of the baffle 20, the zinc ingots can stand stably at the bottom of the inner side of the slot 7. Then, by rotating the motor 15, the next set of slots 7 is placed below the feeding port 27. The above actions are repeated to complete the installation of the zinc ingots. After installation, the electromagnetic coil 8 is turned on to heat the zinc ingots in the preheating tank 6. After heating for a period of time, the cylinder 22 extends to push the bottom of the zinc ingot, allowing its lower end to slide towards the axis of the preheating tank 6 and fall into the hot melt furnace. Inside the furnace 1, the zinc ingot is further heated and melted by the heating inner furnace 23 of the hot melting furnace 1. In addition, auxiliary materials such as aluminum powder can be added through the feeding port 27. After the heating inner furnace 23 heats and melts the zinc ingot, the lifting motor 17 is turned on to drive the synchronous wheel 18 and drive the rotating shaft 9 to rotate through the synchronous belt 19. As the rotating shaft 9 rotates, the spiral lifting blades 10 on it also rotate. Under the action of the filter holes 11, the molten zinc liquid remains in the hot melting furnace 1, while the solid slag is conveyed upward by the spiral lifting blades 10 and finally discharged through the slag discharge pipe 5. The molten zinc liquid is discharged through the discharge pipe 2. The above is the entire process of using the low temperature zinc ingot preheating and melting device.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A device for preheating and melting low-temperature zinc ingots, comprising a hot melt furnace (1) and a discharge pipe (2) disposed at the bottom of the hot melt furnace (1), characterized in that: The upper end of the hot melt furnace (1) is connected to a preheating mechanism (3), and the hot melt furnace (1) is equipped with a slag removal mechanism (4). A slag discharge pipe (5) is fixed on the side wall of the hot melt furnace (1). The preheating mechanism (3) consists of a preheating barrel (6), a slot (7) and an electromagnetic coil (8). The preheating barrel (6) is fixed to the upper end of the hot melt furnace (1), and the bottom of the preheating barrel (6) is connected to the hot melt furnace (1). The slot (7) is evenly distributed in the preheating barrel (6) along a ring. The electromagnetic coil (8) is located on the inner wall of the preheating barrel (6). The slag removal mechanism (4) includes a rotating shaft (9) rotatably connected to the upper end of the hot melt furnace (1). The rotating shaft (9) has a spiral lifting blade (10) fixed on its side wall, and the spiral lifting blade (10) has filter holes (11) evenly distributed on it.

2. The device for preheating and melting low-temperature zinc ingots according to claim 1, characterized in that: Two parallel limiting ring rails (12) are fixed on the inner wall of the preheating barrel (6). Each set of slots (7) is connected and fixed as a whole by two supporting rotating rings (13). The supporting rotating rings (13) are slidably connected to the limiting ring rails (12). Four sets of mutually symmetrical drive connecting plates (14) are fixed at the upper end of the supporting rotating rings (13). A rotating motor (15) is provided at the upper end of the preheating barrel (6). The output shaft of the rotating motor (15) is fixedly connected to the connection point of the four sets of drive connecting plates (14).

3. The device for preheating and melting low-temperature zinc ingots according to claim 1, characterized in that: The upper end of the hot melt furnace (1) is fixed with a supporting shell (16). The upper end of the supporting shell (16) is provided with a lifting motor (17), and the output shaft of the lifting motor (17) passes through the supporting shell (16) and is located inside the supporting shell (16). The output end of the lifting motor (17) and the upper end of the rotating shaft (9) are both provided with synchronous pulleys (18), and the two synchronous pulleys (18) are connected by a synchronous belt (19).

4. The device for preheating and melting low-temperature zinc ingots according to claim 3, characterized in that: A rectangular through slot is provided on the side of the slot (7) near the electromagnetic coil (8), and a baffle (20) is fixed on the side symmetrical to the through slot (7). A bracket (21) is fixed on the upper end of the supporting shell (16), and a cylinder (22) is fixed on the upper end of the bracket (21). The output end of the cylinder (22) passes through the preheating barrel (6) and is located inside the preheating barrel (6). A shaft seal is provided between the output end of the cylinder (22) and the preheating barrel (6).

5. The device for preheating and melting low-temperature zinc ingots according to claim 1, characterized in that: The hot melt furnace (1) consists of a heating inner furnace (23), a heat insulation outer shell (24) and a vacuum chamber (25). The heat insulation outer shell (24) is fixed on the outer wall of the heating inner furnace (23). The vacuum chamber (25) is located between the heating inner furnace (23) and the heat insulation outer shell (24). A vacuum valve nozzle (26) is fixed on the side wall of the heat insulation outer shell (24) and is connected to the vacuum chamber (25).

6. The device for preheating and melting low-temperature zinc ingots according to claim 1, characterized in that: The preheating barrel (6) is provided with a feeding port (27) at its upper end, and the feeding port (27) is located above the slot (7). The hot melt furnace (1) is provided with a manhole cover (28) on its side wall.

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