Furnace core heat insulation structure of electric crucible furnace

Abstract

The utility model relates to the technical field of electric crucible furnace heat insulation, and discloses a furnace core heat insulation structure of an electric crucible furnace, which comprises a support frame, rotating shafts are rotatably mounted on two sides in the support frame, the electric crucible furnace is fixedly mounted on the inner sides of the two groups of rotating shafts, and a heat insulation mechanism is fixedly mounted in the electric crucible furnace; the heat insulation mechanism comprises a cooling groove formed in the electric crucible furnace. The inner heat insulation sand layer and the outer heat insulation sand layer are fixedly installed on the inner side and the outer side of the cooling groove respectively, heat dissipated by the electric heating ring on the outer side of the inner container is gathered, the situation that the temperature of the outer wall of the electric crucible furnace is high due to the fact that the electric crucible furnace is heated by high temperature generated by the inner heat insulation sand layer can be avoided, and meanwhile a fan in the heat insulation mechanism is driven. A large amount of air is guided into the cooling groove in the electric crucible furnace, heat remaining in the cooling groove is continuously exhausted from the exhaust pipe, and therefore the situation that an operator is scalded due to the fact that the temperature of the outer wall of the electric crucible furnace is high due to waste heat of the electric heating ring can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation of electric crucible furnaces, in particular to a furnace core heat insulation structure of an electric crucible furnace. Background Art

[0002] At present, electric crucible furnaces are divided into electromagnetic type and resistance type. Among them, the resistance type has a simple structure and is easy to maintain and is widely used in the smelting and casting industry. Compared with the fuel crucible furnace, the electric crucible furnace does not require smoke exhaust and air intake, so there is less heat loss and high heating efficiency.

[0003] Existing electric crucible furnaces usually rely on materials such as thermal insulation cotton to directly reduce heat loss, but the internal heating temperature of the electric crucible furnace is high, and the insulation efficiency of relying solely on thermal insulation materials is low. The dissipated heat heats the shell, which can easily cause burns to operators. Therefore, it is necessary to design a new technical solution to solve this problem. When taking materials from the inside of the electric crucible furnace, the temperature of the outer wall of the electric crucible furnace can be kept low to avoid scalding the operator. Utility Model Content

[0004] The utility model aims to provide a furnace core heat insulation structure of an electric crucible furnace, which solves the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace core heat insulation structure of an electric crucible furnace, comprising a support frame, wherein rotating shafts are rotatably installed on both sides of the support frame, electric crucible furnaces are fixedly installed on the inner sides of two groups of rotating shafts, and a heat insulation mechanism is fixedly installed inside the electric crucible furnace;

[0006] The thermal insulation mechanism includes a cooling groove opened inside the electric crucible furnace, an inner thermal insulation sand layer fixedly installed on the inner side of the cooling groove, an outer thermal insulation sand layer fixedly installed on the outer side of the cooling groove, an air inlet connected to the cooling groove, a fan fixedly installed on the outer wall of the support frame, and a duct connected to the air outlet of the fan, and the other side of the duct is connected to the air inlet.

[0007] As an optional solution of the technical solution of the present application, an inner liner is fixedly installed on the inner side of the inner insulating sand layer, and an electric heating ring is fixedly installed on the outer wall of the inner liner. The electric heating ring is spring-shaped and can heat the inner liner.

[0008] As an optional solution of the technical solution of the present application, a handle is fixedly installed on the top of one side of the outer wall of the electric crucible furnace, so that the electric crucible furnace can be adjusted.

[0009] As an optional solution to the technical solution of the present application, a seal is fixedly installed on the top of the electric crucible furnace, a sealing gasket is fixedly installed on the bottom of the seal, and the other side of the sealing gasket is in contact with the top of the inner liner, so that the top of the inner liner can be sealed.

[0010] As an optional solution of the technical solution of the present application, an exhaust pipe is installed on the top of the other side of the cooling tank, and an extension pipe is movably installed inside the exhaust pipe to adjust the length of the exhaust pipe.

[0011] As an optional solution of the technical solution of the present application, a screw hole is opened on one side of the top of the exhaust pipe, a bolt is threadedly connected to the screw hole, and the other side of the bolt corresponds to the outer wall of the extension pipe, so that multiple extension pipes can be used for adjustment.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The technical solution of the present application not only gathers the heat emitted by the electric heating ring on the outside of the inner tank, but also prevents the high temperature generated by the inner insulation sand layer from heating the electric crucible furnace and causing the outer wall temperature of the electric crucible furnace to be high, by fixing the inner insulation sand layer and the outer insulation sand layer on the inner and outer sides of the cooling tank respectively. At the same time, the fan in the insulation mechanism is driven to introduce a large amount of air into the cooling tank in the electric crucible furnace, so that the heat retained in the cooling tank is continuously discharged from the exhaust pipe, thereby effectively isolating the residual heat of the electric heating ring and causing the outer wall temperature of the electric crucible furnace to be high, resulting in burns to the operator.

[0014] 2. The technical solution of the present application is to open a screw hole on one side of the top of the exhaust pipe, and a bolt is threadedly connected to the screw hole. When the fan is driven, the extension tube in the exhaust pipe can be adjusted to continuously extend the extension tube to the top. At the same time, the bolt in the screw hole is tightened to firmly fix the extension tube inside the exhaust pipe, so that a large amount of heat is continuously transported to the air to avoid scalding the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0016] Figure 1 It is a schematic diagram of the overall structure of a furnace core heat insulation structure of an electric crucible furnace of the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the internal structure of an electric crucible furnace of the furnace core insulation structure of the electric crucible furnace.

[0018] In the figure: 1. support frame; 11. rotating shaft; 12. electric crucible furnace; 13. handle; 2. cooling trough; 21. inner insulation sand layer; 22. outer insulation sand layer; 23. air inlet; 24. fan; 25. conduit; 3. liner; 31. electric heating ring; 32. seal; 33. sealing gasket; 4. exhaust pipe; 41. extension pipe; 42. bolt. DETAILED DESCRIPTION

[0019] See also Figure 1-2 The utility model provides a technical solution: a furnace core heat insulation structure of an electric crucible furnace 12, comprising a support frame 1, wherein rotating shafts 11 are rotatably installed on both sides of the support frame 1, and electric crucible furnaces 12 are fixedly installed on the inner sides of two sets of rotating shafts 11, and a heat insulation mechanism is fixedly installed inside the electric crucible furnace 12;

[0020] The heat-insulating mechanism includes a cooling trough 2 opened inside the electric crucible furnace 12, an inner heat-insulating sand layer 21 fixedly installed on the inner side of the cooling trough 2, an outer heat-insulating sand layer 22 fixedly installed on the outer side of the cooling trough 2, an air inlet 23 connected to the cooling trough 2, a fan 24 fixedly installed on the outer wall of the support frame 1, and a duct 25 connected to the air outlet of the fan 24, and the other side of the duct 25 is connected to the air inlet 23.

[0021] In this technical solution, an inner insulating sand layer 21 and an outer insulating sand layer 22 are respectively fixedly installed on the inner and outer sides of the cooling tank 2, which not only gathers the heat emitted by the electric heating ring 31 on the outer side of the inner tank 3, but also prevents the high temperature generated by the inner insulating sand layer 21 from heating the electric crucible furnace 12 and causing the outer wall temperature of the electric crucible furnace 12 to be high. At the same time, the fan 24 in the insulation mechanism is driven to introduce a large amount of air into the cooling tank 2 in the electric crucible furnace 12, so that the heat retained in the cooling tank 2 is continuously discharged from the exhaust pipe 4, thereby effectively isolating the residual heat of the electric heating ring 31 and causing the outer wall temperature of the electric crucible furnace 12 to be high, resulting in burns to the operator.

[0022] In some technical solutions, a handle 13 is fixedly installed on the top of one side of the outer wall of the electric crucible furnace 12, an exhaust pipe 4 is installed on the top of the other side of the cooling tank 2, an extension pipe 41 is movably installed inside the exhaust pipe 4, a screw hole is opened on one side of the top of the exhaust pipe 4, a bolt 42 is threadedly connected to the screw hole, and the other side of the bolt 42 corresponds to the outer wall of the extension pipe 41.

[0023] In this technical solution, when the fan 24 is driven, the extension tube 41 in the exhaust pipe 4 can be adjusted to continuously extend the extension tube 41 toward the top, and at the same time, the bolt 42 in the screw hole is screwed in to firmly fix the extension tube 41 inside the exhaust pipe 4, so that a large amount of heat is continuously transported to the air to avoid scalding the operator.

[0024] In some technical solutions, a seal 32 is fixedly installed on the top of the electric crucible furnace 12, a sealing gasket 33 is fixedly installed on the bottom of the seal 32, and the other side of the sealing gasket 33 is in contact with the top of the inner liner 3.

[0025] In this technical solution, the sealing gasket 33 at the bottom of the seal 32 can be used to seal the top of the inner container 3 to ensure the thermal insulation efficiency of the electric crucible furnace 12.

[0026] In some technical solutions, an inner liner 3 is fixedly installed on the inner side of the inner heat-insulating sand layer 21 , and an electric heating ring 31 is fixedly installed on the outer wall of the inner liner 3 , and the electric heating ring 31 is in a spring shape.

[0027] In this technical solution, the inner container 3 can be heated by a spring-shaped electric heating ring 31 installed on the outer side of the inner container 3 .

[0028] When the furnace core insulation structure of an electric crucible furnace 12 is used, it should be noted that the utility model is a furnace core insulation structure of an electric crucible furnace 12, and each component is a universal standard part or a component known to technical personnel in this field, and its structure and principle can be known to technical personnel through technical manuals or through conventional experimental methods.

[0029] When in use, firstly, the inner heat insulating sand layer 21 and the outer heat insulating sand layer 22 are respectively fixedly installed on the inner and outer sides of the cooling groove 2, which not only gathers the heat emitted by the electric heating ring 31 on the outer side of the inner tank 3, but also prevents the high temperature generated by the inner heat insulating sand layer 21 from heating the electric crucible furnace 12 and causing the outer wall temperature of the electric crucible furnace 12 to be high. At the same time, the fan 24 in the heat insulation mechanism is driven to introduce a large amount of air into the cooling groove 2 in the electric crucible furnace 12, so that the heat retained in the cooling groove 2 is continuously discharged from the exhaust pipe 4, thereby effectively isolating the residual heat of the electric heating ring 31 and causing the outer wall temperature of the electric crucible furnace 12 to be high. The exhaust pipe 4 is provided with a screw hole on one side of the top of the exhaust pipe 4, and a bolt 42 is connected to the inner thread of the screw hole. When the fan 24 is driven, the extension pipe 41 in the exhaust pipe 4 can be adjusted to extend the extension pipe 41 continuously toward the top, and the bolt 42 in the screw hole can be screwed together to firmly fix the extension pipe 41 inside the exhaust pipe 4, so that a large amount of heat is continuously transported to the mid-air to avoid scalding the operator. On the contrary, when the operator needs to take materials and adjust the electric crucible furnace 12 in the support frame 1 left and right, the bolt 42 in the screw hole can be screwed together to store the extension pipe 41 inside the exhaust pipe 4.

Claims

1. A furnace core insulation structure of an electric crucible furnace, comprising a support frame (1), characterized in that: Rotating shafts (11) are rotatably mounted on both sides of the support frame (1), electric crucible furnaces (12) are fixedly mounted on the inner sides of two groups of rotating shafts (11), and a heat insulation mechanism is fixedly mounted inside the electric crucible furnace (12); The heat insulation mechanism comprises a cooling groove (2) opened inside the electric crucible furnace (12), an inner heat insulation sand layer (21) fixedly installed on the inner side of the cooling groove (2), an outer heat insulation sand layer (22) fixedly installed on the outer side of the cooling groove (2), an air inlet (23) connected to the cooling groove (2), a fan (24) fixedly installed on the outer wall of the support frame (1), and a duct (25) connected to the air outlet of the fan (24), and the other side of the duct (25) is connected to the air inlet (23).

2. The furnace core heat insulation structure of an electric crucible furnace (12) according to claim 1, characterized in that: An inner liner (3) is fixedly mounted on the inner side of the inner heat-insulating sand layer (21), and an electric heating ring (31) is fixedly mounted on the outer wall of the inner liner (3), wherein the electric heating ring (31) is in a spring shape.

3. The furnace core heat insulation structure of an electric crucible furnace (12) according to claim 1, characterized in that: A handle (13) is fixedly mounted on the top of one side of the outer wall of the electric crucible furnace (12).

4. The furnace core heat insulation structure of an electric crucible furnace (12) according to claim 2, characterized in that: A seal (32) is fixedly mounted on the top of the electric crucible furnace (12), a sealing gasket (33) is fixedly mounted on the bottom of the seal (32), and the other side of the sealing gasket (33) is in contact with the top of the inner container (3).

5. The furnace core heat insulation structure of an electric crucible furnace (12) according to claim 1, characterized in that: An exhaust pipe (4) is installed on the top of the other side of the cooling tank (2), and an extension pipe (41) is movably installed inside the exhaust pipe (4).

6. The furnace core heat insulation structure of an electric crucible furnace (12) according to claim 5, characterized in that: A screw hole is provided on one side of the top of the exhaust pipe (4), a bolt (42) is threadedly connected to the inner thread of the screw hole, and the other side of the bolt (42) corresponds to the outer wall of the extension pipe (41).

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