Cooling and heat insulation structure of furnace mouth of melting furnace

Abstract

The utility model discloses a cooling heat insulation structure of a melting furnace mouth, which comprises a heating seat and a crucible, an induction coil is arranged in the heating seat, the crucible is positioned in the induction coil, a stirring rod is arranged in the crucible, the upper end of the stirring rod is connected with an output shaft of a stirring motor through a chain wheel-chain, and the lower end of the stirring rod is connected with the heating seat. The cooling heat insulation structure comprises a crucible, a stirring rod is arranged in the crucible, a heat insulation cover is arranged at the upper end of the crucible, the heat insulation cover is composed of two semicircular cover bodies capable of being opened and closed, the stirring rod penetrates through the heat insulation cover, and a plurality of fine holes used for introducing argon are formed in a circle of the outer side face of the heat insulation cover. Meanwhile, the motor is protected from being damaged by heat radiation, cost is saved, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medium frequency melting furnace heating, in particular to a cooling and heat insulation structure of a melting furnace mouth. Background Art

[0002] When the medium frequency melting furnace is working, it is sometimes necessary to stir the solution in the crucible. At the same time, in order to improve the melting efficiency and avoid the loss of heat during melting, it is necessary to install an insulation cover on the furnace mouth.

[0003] Due to the effect of radiant heat and the corrosion of hot air above the furnace liquid, the rotating spindle of the stirring rod is often severely burned and has a short life. In addition, long-term operation causes the motor directly connected to the stirring rod to be damaged by heat radiation. Summary of the invention

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a cooling and heat-insulating structure for a melting furnace mouth, which can extend the service life of the stirring rod and protect the motor from damage by heat radiation, thereby effectively solving the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cooling and heat-insulating structure for a melting furnace mouth, comprising a heating seat and a crucible, wherein an induction coil is arranged in the heating seat, the crucible is located in the induction coil, a stirring rod is arranged in the crucible, the upper end of the stirring rod is connected to the output shaft of a stirring motor through a sprocket-chain, an insulation cover is arranged at the upper end of the crucible, the insulation cover is composed of two openable and closable semicircular cover bodies, the stirring rod passes through the insulation cover, and a plurality of fine holes for introducing argon gas are arranged around the outer side surface of the insulation cover.

[0006] As a preferred technical solution of the utility model, a rock wool lining is provided at the lower end of the thermal insulation cover.

[0007] As a preferred technical solution of the utility model, two pillars are arranged on the upper end of the heating seat, and one end of the two semicircular covers is rotatably connected to the corresponding pillars through a connecting shaft.

[0008] As a preferred technical solution of the utility model, a handle is provided at one end of the semicircular cover body.

[0009] As a preferred technical solution of the utility model, the upper end of the stirring rod is rotatably connected to the fixed frame via a fixed bearing, the stirring motor is arranged on the fixed frame, a fixed box is arranged on one side of the fixed frame, an opening is opened on one side of the fixed box, a screw is arranged in the fixed box, one end of the fixed frame is rotatably connected to the screw via a bearing, and the screw is threadedly connected to the top cover plate of the fixed box.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the cooling and heat insulation structure of the melting furnace mouth is reasonably designed and easy to operate. By changing the original stirring motor and the stirring rod directly connected to a sprocket-chain connection, the stirring motor is kept away from the heat source to avoid damage due to long-term heat radiation. At the same time, fine holes are provided on the outside of the insulation layer to blow argon gas inward to facilitate cooling the stirring rod. On the other hand, a cold air curtain can be formed to prevent the loss of heat in the furnace, thereby playing a role in heat preservation and consumption reduction, thereby increasing economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the main sectional view of the utility model;

[0012] Figure 2 for Figure 1 A top view of

[0013] Figure 3 It is a schematic diagram of the structure of the thermal insulation cover.

[0014] In the figure: 1 heating base, 2 crucible, 3 insulation cover, 4 fine hole, 5 handle, 6 induction coil, 7 support, 8 stirring rod, 9 fixed bearing, 10 sprocket-chain, 11 stirring motor, 12 fixed frame, 13 fixed box, 14 screw, 15 connecting shaft. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the present invention). Figure 1 Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0016] See also Figure 1-3 The utility model provides a technical solution: a cooling and heat-insulating structure of a melting furnace mouth, comprising a heating seat 1 and a crucible 2, wherein an induction coil 6 is arranged in the heating seat 1, and the crucible 2 is located in the induction coil 6, and the crucible 2 is heated by energizing the induction coil 6, and a stirring rod 8 is arranged in the crucible 2, and the upper end of the stirring rod 8 is connected to the output shaft of a stirring motor 11 through a sprocket-chain 10, and the upper end of the stirring rod 8 is rotatably connected to a fixed frame 12 through a fixed bearing 9, and the stirring motor 11 is arranged on the fixed frame 12, and the transmission between the stirring motor 11 and the stirring rod 8 is carried out through the sprocket-chain 10, and sprockets are arranged on the output shaft of the stirring motor 11 and the upper end of the stirring rod 8, and a chain is sleeved between the two sprockets, so that the stirring motor 11 can be set to a position away from the heat source to avoid damage to the stirring motor 11 caused by heat radiation;

[0017] An insulation cover 3 is provided at the upper end of the crucible 2, and the insulation cover 3 consists of two openable and closable semicircular cover bodies. The stirring rod 8 passes through the insulation cover 3. Two pillars 7 are provided at the upper end of the heating seat 1. One end of the two semicircular cover bodies is rotatably connected to the corresponding pillars 7 through a connecting shaft 15. A plurality of fine holes 4 for introducing argon gas are provided on a circle on the outer side surface of the insulation cover 3.

[0018] Furthermore, a rock wool lining is provided at the lower end of the thermal insulation cover 3 to provide thermal insulation and prevent heat loss.

[0019] Furthermore, a handle 5 is provided at one end of the semicircular cover body, and the opening and closing of the heat-insulating cover 3 can be easily controlled by providing the handle 5 .

[0020] Furthermore, a fixing box 13 is provided on one side of the fixing frame 12, and an opening is opened on one side of the fixing box 13. A screw 14 is provided in the fixing box 13. One end of the fixing frame 12 is rotatably connected to the screw 14 through a bearing. The screw 14 is threadedly connected to the top cover plate of the fixing box 13. By rotating the screw 14, the fixing frame 12 can be controlled to move up and down, thereby adjusting the stirring position of the stirring rod 8, thereby improving the versatility of use.

[0021] When in use: the induction coil 6 is energized to heat the solution in the crucible 2, and the stirring motor 11 is started at the same time, which drives the stirring rod 8 to rotate under the transmission of the sprocket-chain 10 to stir the solution in the crucible 2; during the stirring process, argon gas is introduced into the interior through the fine holes 4 on the outside of the insulation cover 3 to cool the stirring rod 8 and reduce thermal corrosion on the upper end of the stirring rod 8.

[0022] The utility model can significantly reduce the thermal corrosion on the upper end of the stirring rod 8, increase the service life of the stirring rod 8, and protect the stirring motor 11 from being damaged by heat radiation, thereby saving costs and improving economic benefits.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling and heat-insulating structure for a melting furnace mouth, comprising a heating seat (1) and a crucible (2), wherein an induction coil (6) is arranged in the heating seat (1), the crucible (2) is located in the induction coil (6), and a stirring rod (8) is arranged in the crucible (2), characterized in that: The upper end of the stirring rod (8) is connected to the output shaft of the stirring motor (11) through a sprocket-chain (10); the upper end of the crucible (2) is provided with a heat-insulating cover (3), the heat-insulating cover (3) is composed of two semicircular cover bodies that can be opened and closed, the stirring rod (8) passes through the heat-insulating cover (3), and the outer side surface of the heat-insulating cover (3) is provided with a plurality of fine holes (4) for introducing argon gas.

2. The cooling and heat-insulating structure of a melting furnace mouth according to claim 1, characterized in that: The lower end of the thermal insulation cover (3) is provided with a rock wool lining.

3. The cooling and heat-insulating structure of a melting furnace mouth according to claim 1, characterized in that: Two pillars (7) are arranged at the upper end of the heating seat (1), and one end of the two semicircular covers is rotatably connected to the corresponding pillars (7) via a connecting shaft (15).

4. A cooling and heat-insulating structure for a melting furnace mouth according to claim 1 or 3, characterized in that: A handle (5) is provided at one end of the semicircular cover.

5. The cooling and heat-insulating structure of a melting furnace mouth according to claim 1, characterized in that: The upper end of the stirring rod (8) is rotatably connected to a fixed frame (12) via a fixed bearing (9); the stirring motor (11) is arranged on the fixed frame (12); a fixed box (13) is arranged on one side of the fixed frame (12); one side of the fixed box (13) is opened; a screw rod (14) is arranged in the fixed box (13); one end of the fixed frame (12) is rotatably connected to the screw rod (14) via a bearing; the screw rod (14) is threadedly connected to a top cover plate of the fixed box (13).

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