Molten zinc discharging opening structure of zinc-based alloy smelting furnace

Abstract

A molten zinc discharging opening structure of a zinc-based alloy smelting furnace comprises a discharging nozzle and is characterized in that the discharging nozzle is detachably arranged outside a furnace shell through an inner flange and an outer flange; the discharging nozzle is formed by combining an inner discharging nozzle and an outer discharging nozzle, a through water discharging opening is formed in the middle after the inner discharging nozzle and the outer discharging nozzle are in butt joint, the inner discharging nozzle and the outer discharging nozzle are embedded in the inner flange and the outer flange, and the water discharging opening is coaxial with the discharging opening of the furnace shell. The discharge nozzle is reasonable in structure, firm and reliable, the discharge nozzle is convenient to disassemble, assemble and replace and long in service life, the problems that the discharge nozzle of a smelting furnace is not durable and troublesome to maintain are effectively solved due to the fact that the discharge nozzle is externally arranged, and the discharge nozzle is not limited to battery zinc alloy smelting discharge and can also be suitable for smelting discharge of other zinc alloys, aluminum alloys and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of the water discharge port of a zinc alloy melting furnace, and relates to a zinc liquid discharge port structure of a zinc-based alloy melting furnace, which is used for the water discharge port of a zinc alloy melting furnace for manufacturing zinc cakes for the negative zinc cylinders of carbon zinc manganese dry batteries. Background Art

[0002] The material of the battery zinc cake is a zinc-based alloy with zinc as the matrix and appropriately adding other metal elements. The zinc-based alloy contains more than 99.5% zinc and basically maintains the strong oxidation property of pure zinc. At present in the industry, its production process generally is: melting (using zinc ingots with appropriate purity as the main raw material, adding appropriate other metal elements for melting) → continuously casting into slab billets → rolling into strip coils with the target thickness → punching out zinc cakes through a blanking process. Among them, the melting process generally uses an industrial frequency electric furnace or a gas furnace, the furnace pool capacity is generally 20 - 40 tons of zinc, and there is a link of discharging zinc liquid from the melting furnace to continuous casting. One or two zinc liquid discharge ports (commonly known as water discharge ports) must be set in the melting furnace. As Figure 1 shown, it includes a furnace shell 4, a furnace wall body 5, a discharge nozzle A and a refractory brick B. The middle of the water discharge port is a circular small hole, and both sides are "flared". The inner flare is the refractory brick B, and the outer flare discharge nozzle A is generally made of stainless steel or other high-temperature resistant metal materials. The discharge nozzle A is welded or connected with screws to the furnace shell 4. The outer flare opening of the discharge nozzle A is generally blocked by a tapered plug with a refractory fiber cotton cap outside. When it is necessary to discharge zinc water (commonly known as starting the furnace), the cap is removed and the plug is pulled out. Because there is solidified material in the middle small hole of the water discharge port, generally the zinc liquid cannot flow out. At this time, generally a carbon rod is used for electric burning. After the zinc liquid flows out, a plug for adjusting the flow rate (made of graphite) is quickly inserted to adjust the flow rate to an appropriate state.

[0003] The traditional zinc liquid discharge port has the following defects in the use process:

[0004] First, the discharge nozzle made of stainless steel or other high-temperature resistant metal materials has a short service life. Because during the process of discharging zinc liquid, the discharge nozzle is always under the scouring of zinc liquid. As mentioned above, the battery zinc alloy liquid basically maintains the oxidation property of pure zinc, and the metal discharge nozzle is extremely easy to be oxidized and corroded; in addition, when starting the furnace, the carbon rod is used for electric burning at the furnace mouth using the principle of electric welding, and the discharge nozzle made of metal is also a conductor, which is extremely easy to be burned out. Practical experience shows that the service life of this structure is less than 1 month.

[0005] Second, it is difficult to replace and repair the discharge nozzle. If the feed nozzle needs to be replaced, part of the furnace wall needs to be damaged, which is time-consuming and laborious and there is a risk of zinc liquid leakage. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a zinc-based alloy melting furnace zinc liquid discharge port structure with reasonable structure, convenient disassembly and repair, and long service life in view of the above technical status.

[0007] The utility model solves the above technical problems by adopting the following technical solution: a zinc liquid discharge port structure of a zinc-based alloy smelting furnace, comprising a discharge nozzle, characterized in that the discharge nozzle is detachably arranged outside the furnace shell through an inner flange and an outer flange.

[0008] As an improvement, an inner flange and an outer flange are provided in sequence at positions outside the furnace shell corresponding to the discharge port. The discharge nozzle is composed of an inner discharge nozzle and an outer discharge nozzle. After the inner discharge nozzle and the outer discharge nozzle are connected, a through drain port is formed in the middle. The inner discharge nozzle and the outer discharge nozzle are embedded in the inner flange and the outer flange, and the drain port is coaxial with the discharge port of the furnace shell.

[0009] Furthermore, the inner flange and the outer flange are made of ordinary steel, wherein the inner flange is welded and fixed to the furnace shell, and the outer flange is fixed to the inner flange with bolts, the inner discharge nozzle and the outer discharge nozzle are both cylindrical, the lengths of the inner discharge nozzle and the outer discharge nozzle are respectively consistent with the thicknesses of the inner flange and the outer flange, and the outer walls at the junction of the inner discharge nozzle and the outer discharge nozzle are respectively formed with a circle of positioning convex rings, and the middle parts of the inner flange and the outer flange are provided with through circular holes for embedding the inner discharge nozzle and the outer discharge nozzle, and an annular groove cooperating with the discharge nozzle positioning convex ring is concavely provided at the junction of the two through circular holes, the inner discharge nozzle and the outer discharge nozzle are respectively arranged in the through circular holes of the inner flange and the outer flange, and the positioning convex rings are arranged in the annular grooves of the inner and outer flanges, and are connected and positioned by the outer flange and the inner flange.

[0010] Finally, the inner discharge nozzle and the outer discharge nozzle are made of refractory materials, the middle of the water discharge port is a circular hole, the inner and outer sides are trumpet-shaped, and the opening of the inner trumpet is consistent with the size of the discharge port of the furnace shell.

[0011] Compared with the prior art, the advantages of the utility model are: the discharge nozzle is arranged outside the furnace shell through the inner and outer flanges, which is convenient for disassembly; and the discharge nozzle is made of refractory material, which is non-metallic, avoiding failure due to oxidation corrosion of zinc liquid and damage when the carbon rod is electrically burned to open the furnace, and the life of the drain port is greatly improved. The utility model has a reasonable structure, is firm and reliable, and the discharge nozzle is easy to disassemble and replace, and has a long service life. Since the drain port is externally placed, the problem of the drain port of the smelting furnace being not durable and troublesome to maintain is effectively solved. The utility model is not limited to battery zinc alloy smelting and draining, but can also be suitable for smelting and draining of other zinc alloys, aluminum alloys, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the water outlet of the smelting furnace before improvement;

[0013] Figure 2 It is a structural schematic diagram of an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] As Figure 2 shown, a zinc-based alloy smelting furnace zinc liquid discharge port structure includes a furnace shell 4, a furnace wall 5 and a discharge nozzle 1. The discharge nozzle 1 is detachably arranged outside the furnace shell 4 through an inner flange 2 and an outer flange 3.

[0016] An inner flange 2 and an outer flange 3 are successively arranged outside the furnace shell 4 corresponding to the discharge port. The inner flange 2 and the outer flange 3 are made of ordinary steel. The inner flange 2 is welded and fixed to the furnace shell 4, and the outer flange 3 is fixed to the inner flange 2 by bolts. The discharge nozzle 1 is composed of an inner discharge nozzle 11 and an outer discharge nozzle 12. After the inner discharge nozzle 11 and the outer discharge nozzle 12 are butted, a through water discharge port 10 is formed in the middle. The inner discharge nozzle 11 and the outer discharge nozzle 12 are respectively embedded in the inner flange 2 and the outer flange 3, and the water discharge port 10 is coaxial with the discharge port of the furnace shell 4. Both the inner discharge nozzle 11 and the outer discharge nozzle 12 are cylindrical. The lengths of the inner discharge nozzle 11 and the outer discharge nozzle 12 are respectively the same as the thicknesses of the inner flange 2 and the outer flange 3. A positioning convex ring 13 is formed on the outer walls of the butting parts of the inner discharge nozzle 11 and the outer discharge nozzle 12. A through circular hole for embedding the inner discharge nozzle 11 and the outer discharge nozzle 12 is provided in the middle of the inner flange 2 and the outer flange 3, and an annular groove for cooperating with the discharge nozzle positioning convex ring 13 is recessed at the butting part of the two through circular holes. The inner discharge nozzle 11 and the outer discharge nozzle 12 are respectively arranged in the through circular holes of the inner flange 2 and the outer flange 3, and the positioning convex ring 13 is arranged in the annular grooves of the inner and outer flanges, and is positioned by connecting the outer flange 3 and the inner flange 2.

[0017] The inner discharge nozzle 11 and the outer discharge nozzle 12 are made of refractory materials. The middle of the water discharge port 10 is a circular small hole, and both the inner and outer sides are flared, and the opening of the inner flare is the same size as the discharge port of the furnace shell 4.

[0018] During installation, first weld the inner flange 2 to the furnace shell 4 for positioning, embed the inner discharge nozzle 11 and the outer discharge nozzle 12 into the inner flange 2 and the outer flange 3 respectively, and align the outer flange 3 with the inner flange 2 and connect and fix them with bolts.

[0019] When the discharge nozzle 1 needs to be replaced, loosen the connection bolts of the inner flange 2 and the outer flange 3, remove the outer flange 3, and then it is very convenient and easy to take out the inner discharge nozzle 11 and the outer discharge nozzle 12 for replacement.

[0020] In this embodiment, the water discharge port 10 is externally placed, and the discharge nozzle in direct contact with the zinc alloy liquid is made of non-metallic refractory materials, which avoids failure due to oxidation and corrosion of the zinc liquid and damage during carbon rod electric furnace opening, greatly improves the service life, and is very convenient for replacement and maintenance. The utility model is not limited to the smelting and water discharge of battery zinc alloy, and is also suitable for the smelting and water discharge of other zinc alloys, aluminum alloys, etc.

[0021] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A zinc-based alloy smelting furnace zinc liquid discharge port structure, including a discharge nozzle, characterized in that: The discharge nozzle is detachably arranged outside the furnace shell through an inner flange and an outer flange.

2. The zinc liquid discharging port structure of the zinc-based alloy melting furnace according to claim 1, wherein: An inner flange and an outer flange are successively arranged outside the furnace shell corresponding to the position of the discharge port. The discharge nozzle is composed of an inner discharge nozzle and an outer discharge nozzle. After the inner discharge nozzle and the outer discharge nozzle are butted, a through water discharge port is formed in the middle. The inner discharge nozzle and the outer discharge nozzle are embedded in the inner flange and the outer flange, and the water discharge port is coaxial with the discharge port of the furnace shell.

3. The structure of the zinc liquid discharge port of the zinc-based alloy melting furnace according to claim 2, characterized in that: The inner flange and the outer flange are made of ordinary steel. The inner flange is fixedly welded to the furnace shell, and the outer flange is fixed to the inner flange by bolts. Both the inner discharge nozzle and the outer discharge nozzle are cylindrical. The lengths of the inner discharge nozzle and the outer discharge nozzle are respectively the same as the thicknesses of the inner flange and the outer flange. A circle of positioning convex rings are respectively formed on the outer walls of the butting parts of the inner discharge nozzle and the outer discharge nozzle. Through round holes for embedding the inner discharge nozzle and the outer discharge nozzle are provided in the middle parts of the inner flange and the outer flange, and an annular groove matched with the positioning convex ring of the discharge nozzle is concavely arranged at the butting part of the two through round holes. The inner discharge nozzle and the outer discharge nozzle are respectively arranged in the through round holes of the inner flange and the outer flange, the positioning convex rings are arranged in the annular grooves of the inner and outer flanges, and the connection and positioning are realized through the outer flange and the inner flange.

4. The zinc liquid discharging port structure of the zinc-based alloy melting furnace according to claim 1 or 2 or 3, characterized in that: The inner discharge nozzle and the outer discharge nozzle are made of refractory materials. The middle part of the water discharge port is a circular small hole, and the inner and outer sides are trumpet-shaped, and the opening of the inner trumpet is the same size as the discharge port of the furnace shell.

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