Induction melting furnace shell beneficial to vacuumizing

Abstract

The utility model relates to the technical field of industrial electric furnaces, in particular to an induction melting furnace shell beneficial to vacuumizing, which comprises a furnace shell main body, an upper furnace shell and a lower furnace shell, the furnace shell main body is of a circumferential closed structure, the bottom of the furnace shell main body is fixedly connected with the lower furnace shell, the top of the furnace shell main body is fixedly connected with the upper furnace shell, a closed inner cavity is formed in an area defined by the upper furnace shell, the furnace shell main body and the lower furnace shell, and the inner cavity is communicated with the outside through a furnace opening formed in the upper furnace shell. According to the utility model, the furnace shell is made into a closed structure and is communicated with the outside only through the furnace mouth, feeding and vacuumizing can be carried out through the furnace mouth, a special vacuumizing room does not need to be built, and the building cost and the energy consumption of vacuumizing are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial electric furnace technical field, concretely relates to an inductive melting furnace shell beneficial to vacuumizing. BACKGROUND

[0002] The inductive melting furnace is one kind of industrial electric furnace, the main structure of its furnace body includes furnace shell, magnetic yoke, induction coil, cooling waterway and furnace lining (crucible), in the working process, the intermediate frequency power supply cabinet provides the induction coil with intermediate frequency alternating current to make it produce high density magnetic force line, the magnetic force line cuts the metal material in the crucible, and great eddy current is produced in the metal material, and the eddy current makes the metal material red even melts.

[0003] Under certain working conditions, in order to meet the specific processing requirement, the intermediate frequency heating furnace needs to open the vacuum environment in the crucible vacuum, such as heating volatile metal, oxidizable material under high temperature, and the vacuum environment can effectively reduce oxidation and volatilization.In the prior art, the furnace shell of the inductive melting furnace is an open structure, mainly plays the role of installing framework and protecting internal structure, and itself has no sealing property and cannot directly vacuumize the internal crucible, needs to set the furnace body in a room dedicated to vacuumizing, which needs to occupy more workshop space, increases the cost, and when vacuumizing, the air in the room also needs to be removed, consumes long time and increases energy consumption. UTILITARIAN CONTENT

[0004] The utility model aims at overcoming the deficiencies in the background art, provides a kind of inductive melting furnace shell beneficial to vacuumizing, can satisfy the requirement of direct vacuumizing, need not to build special room, to reduce energy consumption and overall cost.

[0005] The technical scheme of the utility model is:

[0006] A kind of inductive melting furnace shell beneficial to vacuumizing, including furnace shell main body, upper furnace shell and lower furnace shell;The furnace shell main body is circumferential closed structure, its bottom is fixedly connected with lower furnace shell, its top is fixedly connected with upper furnace shell, the area enclosed by upper furnace shell, furnace shell main body and lower furnace shell forms a closed inner cavity, and the inner cavity is communicated with outside by the furnace mouth of upper furnace shell.The furnace shell is made into a closed structure by the above technical scheme, is communicated with outside only by furnace mouth, can be fed and vacuumized by furnace mouth, need not to build special vacuumizing room, save construction cost and energy consumption of vacuumizing.

[0007] In further scheme, the furnace shell main body is in the form of a cylindrical ring.The above technical scheme can adapt to the structure of furnace lining and induction coil, and also simplify the processing of furnace shell main body.

[0008] In a further embodiment, the furnace shell body is provided with at least one observation window for observing the internal conditions and serving as a maintenance access. A high-temperature resistant transparent plate is installed inside the observation window, and the transparent plate is sealed to the furnace shell body using a high-temperature resistant sealing material. This technical solution facilitates observation of the processing of metal materials inside the furnace.

[0009] In a further embodiment, at least one of the upper furnace shell, the main furnace shell body, and the lower furnace shell is provided with reinforcing ribs, which are located on the inner wall and / or the outer wall. This technical solution increases the overall strength of the furnace shell.

[0010] In a further embodiment, at least one of the upper furnace shell, the main furnace shell body, and the lower furnace shell is equipped with a cooling water pipe, which is located on the inner side and / or outer wall of the main furnace shell body. This technical solution can cool some heat-generating parts of the induction melting furnace.

[0011] In a further embodiment, at least one opening is provided in the furnace shell body and the lower furnace shell, through which an internal cooling water pipe extends, and the cooling water pipe is sealed to the opening. This technical solution prevents vacuum leakage from the gap between the cooling water pipe and the furnace shell body.

[0012] In a further embodiment, the external interface of the cooling water pipe adopts a quick-connect structure. Through the above technical solutions, rapid connection and disconnection of the cooling water pipe from external pipelines can be achieved.

[0013] In a further embodiment, the furnace shell body is provided with terminals for connecting external cables and internal induction coils; these terminals are quick-connect structures. This technical solution allows for the rapid connection and disconnection of the internal induction coil and the external cable.

[0014] In a further embodiment, a maintenance box is provided on the furnace shell body. The panel of the maintenance box can be opened and closed, and when closed, a high-temperature resistant sealing material is used to achieve a seal between the maintenance box and the body.

[0015] In a further embodiment, the wiring terminals are located on the panel of the maintenance box.

[0016] Compared with the prior art, this utility model has the following advantages: The furnace shell of a traditional induction melting furnace is an open structure and cannot be directly used for vacuuming the crucible. The furnace shell provided by this utility model is a completely closed space except for the furnace opening. After vacuuming from the furnace opening (or from other parts after sealing the furnace opening), the crucible in this space can form a vacuum environment. There is no need to build a special room, which effectively solves the problem of floor space. Moreover, it only targets the vacuuming of molten steel in the furnace, reducing energy consumption and construction costs, and improving the flexibility of equipment installation location. Attached Figure Description

[0017] Fig. 1 is a three-dimensional structure schematic diagram of an embodiment of the utility model.

[0018] Fig. 2 is a main view structure schematic diagram of an embodiment of the utility model.

[0019] Fig. 3 is a test structure schematic diagram of an embodiment of the utility model.

[0020] In the drawing: furnace mouth ring 1, upper furnace shell 2, furnace panel 3, furnace shell main body 4, lower furnace shell 5, furnace nozzle 6, observation window 7, wiring terminal 8, external interface end 9, maintenance box 10. Specific implementation

[0021] In order to make the ordinary skilled in the art more clearly understand the purpose, technical scheme and advantage of the utility model, the following will be further described to the utility model with the drawings and examples, but the utility model is not limited to the following examples.

[0022] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is the orientation or position relation based on the orientation or position relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0023] As Figs. 1-3 Indicated, the induction melting furnace furnace shell provided by the embodiment is for the convenience of directly vacuumizing the crucible inside the furnace shell, therefore the furnace shell needs to be designed into a closed structure, only the furnace mouth for vacuumizing and feeding is kept in communication with the outside.

[0024] Specifically, the above-mentioned induction melting furnace furnace shell includes the furnace shell main body 4, the upper furnace shell 2 and the lower furnace shell 5. The furnace shell main body 4 is a circumferential closed structure, since the shape of the induction melting furnace has diversity, the furnace shell main body 4 changes in nature and changes, usually in the shape of a vertical coil, which is adapted to the shape of the internal crucible and the induction coil. The bottom of the furnace shell main body 4 is fixedly connected with the lower furnace shell 5, the connecting place is full-welding sealed, so as to completely seal the bottom end of the furnace shell main body 4, the top of the furnace shell main body 4 is fixedly connected with the upper furnace shell 2, the connecting place is full-welding sealed, and the periphery of the upper furnace shell 2 is fixed with the furnace panel 3. Through the above structure, the area surrounded by the upper furnace shell 2, the furnace shell main body 4 and the lower furnace shell 5 forms a closed inner cavity, but since the internal crucible needs to be fed, and vacuumizing also needs to be carried out, therefore the upper furnace shell 2 is provided with a furnace mouth, the furnace mouth part is provided with a furnace mouth ring 1 and a furnace nozzle 6, and the inner cavity is in communication with the outside through the furnace mouth.

[0025] In order to observe the metal melting in the furnace during the processing and facilitate the internal maintenance, a plurality of observation windows 7 for observing the internal condition and as the maintenance opening are arranged on the furnace shell body 4, a high-temperature-resistant transparent plate is arranged in the observation window 7, the transparent plate and the furnace shell body 4 are sealed by the high-temperature-resistant sealing material, and the observation window 7 can be used as the maintenance opening after the transparent plate is removed. In the embodiment, the transparent plate and the sealing material are all made of the existing material.

[0026] In order to increase the overall structural strength of the furnace shell, in the embodiment, the furnace shell body 4 and the lower furnace shell 5 are all provided with the reinforcing rib, the reinforcing rib is arranged on the inner wall or the outer wall, and the reinforcing rib can also be arranged on the inner wall and the outer wall, and the upper furnace shell 2 can also be provided with the reinforcing rib according to the actual working environment.

[0027] In the embodiment, at least one of the upper furnace shell 2, the furnace shell body 4 and the lower furnace shell 5 is provided with a cooling water pipe, the cooling water pipe is arranged on the inner side or / and the outer wall of the furnace shell body 4, and the heating position is cooled through the cooling water pipe. When installing, the shell wall where the cooling water pipe needs to be installed can be holed, the internal cooling water pipe is led out from the hole, and the cooling water pipe and the hole are sealed by full welding. The external interface end 9 of the cooling water pipe adopts a quick connection structure, for example, a flange connection or a water nozzle connection.

[0028] The furnace shell body 4 is provided with a wiring terminal 8 for connecting the external cable and the internal induction coil, the wiring terminal 8 can adopt an existing quick connection structure to facilitate connection and disassembly. The furnace shell body 4 is provided with a maintenance box 10, the panel of the maintenance box 10 is openable and closable, and the sealing between the panel and the box body is realized by the high-temperature-resistant sealing material when closed. In order to facilitate maintenance, the wiring terminal 8 can be arranged on the panel of the maintenance box 10.

[0029] The embodiment is a closed structure, only the furnace opening part is reserved for feeding and vacuumizing, the vacuumizing equipment covers the furnace opening and the furnace nozzle 6, the air is extracted from the furnace nozzle 6 after starting the vacuumizing, the vacuum environment can be formed in the furnace shell, and the crucible in the furnace nozzle 6 is also in the vacuum environment, so that the metal with the vacuum melting requirement can be processed.

[0030] The above only describes the preferred embodiments of the present application, and the present application can be variously changed and modified for the person skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A furnace shell for an induction melting furnace that facilitates vacuuming, characterized in that, It includes a furnace shell body (4), an upper furnace shell (2) and a lower furnace shell (5); the furnace shell body (4) is a circumferentially closed structure, with the lower furnace shell (5) fixedly connected to its bottom and the upper furnace shell (2) fixedly connected to its top. The area enclosed by the upper furnace shell (2), the furnace shell body (4) and the lower furnace shell (5) forms a closed inner cavity, which is connected to the outside through the furnace opening opened in the upper furnace shell (2).

2. The induction melting furnace shell facilitating vacuum extraction according to claim 1, characterized in that, The main body of the furnace shell (4) is cylindrical.

3. The induction melting furnace shell facilitating vacuum extraction according to claim 1, characterized in that, The furnace shell body (4) is provided with at least one observation window (7) for observing the internal conditions and serving as an inspection port. A high-temperature resistant transparent plate is provided inside the observation window (7), and the transparent plate is sealed to the furnace shell body (4) by a high-temperature resistant sealing material.

4. The induction melting furnace shell facilitating vacuum extraction according to claim 1, characterized in that, At least one of the upper furnace shell (2), the furnace shell body (4), and the lower furnace shell (5) is provided with reinforcing ribs, which are located on the inner wall and / or the outer wall.

5. The induction melting furnace shell facilitating vacuum extraction according to claim 1, characterized in that, At least one of the upper furnace shell (2), the furnace shell body (4) and the lower furnace shell (5) is provided with a cooling water pipe, which is located on the inner side and / or outer wall of the furnace shell body (4).

6. The induction melting furnace shell facilitating vacuum extraction according to claim 5, characterized in that, At least one of the furnace shell body (4) and the lower furnace shell (5) is made of an opening, and the internal cooling water pipes pass through the openings and are sealed with the openings.

7. A vacuum-facilitating induction melting furnace shell according to claim 5 or 6, characterized in that, The external interface end (9) of the cooling water pipe adopts a quick-connect structure.

8. The induction melting furnace shell facilitating vacuum extraction according to claim 1, characterized in that, The furnace shell body (4) is provided with a wiring terminal (8) for connecting external cables and internal induction coils. The wiring terminal (8) is a quick-connect structure.

9. A vacuum-facilitating induction melting furnace shell according to claim 8, characterized in that, The furnace shell body (4) is provided with a maintenance box (10). The panel of the maintenance box (10) can be opened and closed. When closed, it is sealed with the box body by a high-temperature resistant sealing material.

10. A vacuum-facilitating induction melting furnace shell according to claim 9, characterized in that, The wiring terminal (8) is located on the panel of the maintenance box (10).

Images