Argon blowing device of vacuum induction furnace

Abstract

The utility model relates to the technical field of smelting of smelting furnaces, and discloses an argon blowing device of a vacuum induction furnace, which comprises an induction furnace body and an air pressure slip ring mounted in the center of the bottom of the induction furnace body. The gas distribution box is provided with a gas outlet; the transmission rod is arranged at the top of the gas distribution box; the motor is installed at the end, away from the air distribution box, of the transmission rod. The air pressure slip ring is mounted in the center of the bottom of the induction furnace body, the air distribution box is mounted at the upper end of the air pressure slip ring, the clamping groove is fixed to the top of the air distribution box, and the transmission rod is clamped with the clamping groove, so that when the motor drives the transmission rod to rotate, the air distribution box rotates along with the transmission rod; and when the exhaust pipe rotates, the argon is stirred, so that the argon is uniformly dispersed in the induction furnace body along with the rotation of the gas distribution box and the folding ventilation assembly, and when the exhaust pipe rotates, molten metal in the induction furnace body is stirred, so that the argon and the molten metal are more fully fused, the molten metal is more effectively purified, and the practicability of the argon blowing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smelting furnaces, in particular to an argon blowing device for a vacuum induction furnace. Background Art

[0002] The principle of the vacuum induction furnace is to generate eddy currents during the electromagnetic induction process to melt the metal. This process can be used to refine high-purity metals and alloys. Generally, during the smelting process, it is necessary to fill the refined molten metal with argon gas, and use the argon gas that forms bubbles in the molten metal to adsorb impurities in the molten metal, thereby achieving the purpose of purifying the molten metal.

[0003] After searching, it was found that the Chinese utility patent with application number CN202320137599.8 proposed an argon blowing device at the bottom of a tundish for copper alloys, including a main channel and a first step connected to the main channel, the first step having at least one, a vent pipe on the main channel, an air inlet pipe and a plurality of air outlet channels one on the first step, the plurality of air outlet channels one being evenly arranged along the circumference of the first step, the vent pipe being connected to the air inlet pipe, and the plurality of air outlet channels one being respectively connected to the air inlet pipe. By arranging a plurality of air outlet channels on the step, the argon gas is evenly dispersed and distributed, which can ensure a more comprehensive contact with the copper water. The blown argon gas effectively stirs the copper water and floats it, which can prevent the copper water from producing component segregation. At the same time, the floating bubbles absorb the slag suspended in the melt and bring it to the melt surface for removal, ensuring that the copper water in different areas of the tundish is effectively purified, thereby improving the cleanliness of the copper water and the quality of the copper alloy ingot.

[0004] The diameter of the above-mentioned comparative document is fixed. When placed in a smelting furnace, it can make the bubbles float upward. However, when placed in a larger smelting furnace, the bubbles floating upward cannot act quickly at a farther position, thus reducing the effectiveness of the use of argon in a larger smelting furnace. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides an argon blowing device for a vacuum induction furnace, which solves the problems mentioned in the above background.

[0006] The utility model provides the following technical solutions:

[0007] The utility model discloses an argon blowing device for a vacuum induction furnace, comprising an induction furnace body,

[0008] The gas pressure slip ring is installed at the bottom center of the induction furnace body;

[0009] A gas distribution box is arranged at the bottom of the inner wall of the induction furnace body;

[0010] A folding ventilation assembly is installed on the side of the air distribution box;

[0011] A transmission rod is arranged on the top of the air distribution box;

[0012] The motor is installed at the end of the transmission rod away from the air distribution box.

[0013] Furthermore, the folding ventilation assembly includes a first exhaust pipe, a spherical tube, a second exhaust pipe and a hemispherical baffle, wherein the first exhaust pipe is fixed to the outer surface of the air distribution box, the spherical tube is fixed to the end of the first exhaust pipe away from the air distribution box, the second exhaust pipe is connected to the first exhaust pipe through a rotating shaft, and a hemispherical baffle is fixed to the side of the second exhaust pipe close to the first exhaust pipe.

[0014] Furthermore, three groups of limit blocks are arranged on the top of the induction furnace body.

[0015] Furthermore, a top cover is movably installed on the top of the induction furnace body.

[0016] Furthermore, an air inlet pipe is fixed to the side of the induction furnace body.

[0017] Furthermore, a plurality of support rods are fixed in the middle of the top of the gas distribution box, and a clamping groove is formed between the support rods.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model installs a pneumatic slip ring at the bottom center of the induction furnace body, installs a gas distribution box at the upper end of the pneumatic slip ring, fixes a slot on the top of the gas distribution box, and is connected by a transmission rod and the slot. When the motor drives the transmission rod to rotate, the gas distribution box rotates with the transmission rod, so that the argon gas is evenly distributed inside the induction furnace body as the gas distribution box and the folding ventilation component rotate. In addition, the angles of the first exhaust pipe and the second exhaust pipe can be adjusted, so the expansion coverage range of the argon gas can be adjusted to adapt to smelting furnaces of different sizes within a certain range, and the argon gas coverage range can be adaptively adjusted. When the exhaust pipe rotates, the molten metal inside the induction furnace body is stirred to make the argon gas and the molten metal more fully integrated, so that the molten metal is more effectively purified, thereby improving the practicality of the argon blowing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0021] Figure 2 It is a front view cross-sectional view of the structure of the utility model;

[0022] Figure 3 It is a three-dimensional structural diagram of the split air box in the utility model;

[0023] Figure 4It is a cutaway top view of the foldable ventilation assembly in the utility model;

[0024] The numbers in the figure represent: 1. induction furnace body; 2. limit block; 3. top cover; 4. air inlet pipe; 5. air pressure slip ring; 6. air distribution box; 7. first exhaust pipe; 8. spherical pipe; 9. second exhaust pipe; 10. hemispherical baffle; 11. slot; 12. transmission rod; 13. motor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-3 , including an induction furnace body 1, an air pressure slip ring 5, which is installed at the bottom center of the induction furnace body 1, and the air pressure slip ring 5 is a multi-channel rotary joint; an air distribution box 6, which is arranged at the bottom of the inner wall of the induction furnace body 1, and a mounting hole is provided at the center of the bottom of the air distribution box 6, and the air pressure slip ring 5 passes through the mounting hole provided in the air distribution box 6, so that the air pressure slip ring 5 is connected and fixed to the air distribution box 6; a folding ventilation component, which is installed on the side of the air distribution box 6; a transmission rod 12, which is arranged on the top of the air distribution box 6; a motor 13, which is installed at the end of the transmission rod 12 away from the air distribution box 6, and the motor 13 can drive the air distribution box 6 to rotate through the transmission rod 12. During rotation, the end of the air pressure slip ring 5 close to the air distribution box 6 rotates with the air distribution box 6, and the other end remains fixed to the induction furnace body 1.

[0027] The folding ventilation assembly includes a first exhaust pipe 7, a spherical tube 8, a second exhaust pipe 9 and a hemispherical baffle 10, wherein the first exhaust pipe 7 is fixed to the outer surface of the gas distribution box 6, and a vent is provided between the first exhaust pipe 7 and the gas distribution box 6 to facilitate the argon gas inside the first exhaust pipe 7 to enter the first exhaust pipe 7, a spherical tube 8 is fixed to the end of the first exhaust pipe 7 away from the gas distribution box 6, a vent is provided inside the spherical tube 8, and the vent on the side close to the first exhaust pipe 7 is smaller, the side wall of the first exhaust pipe 7 is connected to the vent of the spherical tube 8, and the vent on the side of the spherical tube 8 away from the first exhaust pipe 7 is larger, the second exhaust pipe 9 is connected to the first exhaust pipe 7 through a rotating shaft, the gas distribution box 6, the first exhaust pipe 7 and the second An air outlet is provided at the top of the exhaust pipe 9. A hemispherical baffle 10 is fixed to the side of the second exhaust pipe 9 close to the first exhaust pipe 7. A vent is provided between the hemispherical baffle 10 and the second exhaust pipe 9. When the second exhaust pipe 9 is folded relative to the first exhaust pipe 7, argon is delivered into the second exhaust pipe 9 through the air hole of the spherical tube 8. When the diameter of the induction furnace body 1 is large, the first exhaust pipe 7 and the second exhaust pipe 9 can be straightened to maximize the argon blowing range of the folded ventilation assembly. When the diameter of the induction furnace body 1 is small, the second exhaust pipe 9 is folded to make the folded ventilation assembly adapt to the size of the induction furnace body 1, and the inside of the induction furnace body 1 continues to be evenly blown with argon.

[0028] Three groups of limit blocks 2 are arranged on the top of the induction furnace body 1. A top cover 3 is movably installed on the top of the induction furnace body 1, and the outer edge of the top cover 3 is stuck inside the three groups of limit blocks 2. A through hole is reserved at the top center of the top cover 3. A transmission rod 12 is installed inside the through hole. A boss is fixed on the outside of the through hole. The top of the boss is used to install a motor 13. A lifting ring is arranged on the surface of the top cover 3, and the lifting ring is used to facilitate the movement of the top cover 3. An air intake pipe 4 is fixed on the side of the induction furnace body 1. One end of the air intake pipe 4 is connected to the gas cylinder of argon gas, and the other end is connected to the end of the air pressure slip ring 5 away from the air distribution box 6. Argon gas enters the inside of the air distribution box 6 through the air intake pipe 4 and the air pressure slip ring 5. The argon gas entering the inside of the air distribution box 6 is dispersed into the exhaust pipe and enters the inside of the induction furnace body 1 through the air outlet holes opened on the surface of the air distribution box 6 and the exhaust pipe.

[0029] A plurality of supporting rods are fixed in the middle of the top of the air distribution box 6 , and a clamping groove 11 is formed between the supporting rods. The end of the transmission rod 12 away from the motor 13 can be clamped with the air distribution box 6 through the clamping groove 11 .

[0030] Working principle: fix the lower end of the air pressure slip ring 5 to the bottom of the induction furnace body 1, connect the air pressure slip ring 5 to one end of the air inlet pipe 4, and fix the upper end of the air pressure slip ring 5 to the bottom of the air distribution box 6, so that the air inlet pipe 4 can send argon into the air distribution box 6 through the air pressure slip ring 5. After the argon enters the air distribution box 6, it is dispersed into the exhaust pipe and enters the induction furnace body 1 through the air outlet holes opened on the surface of the air distribution box 6 and the exhaust pipe, and argon is blown into the molten metal in the induction furnace body 1. The transmission rod 12 is connected with the card slot 11. When the motor 13 drives the transmission rod 12 to rotate, the transmission rod 12 drives the air distribution box 6 to rotate together through the card slot 11, so that the argon is evenly distributed in the induction furnace body 1 as the air distribution box 6 and the exhaust pipe rotate, so that the molten metal in the induction furnace body 1 is more fully purified, and when the exhaust pipe rotates, the molten metal can be stirred to make the argon and the molten metal mix more evenly, thereby improving the purification effect of the molten metal.

[0031] Although the 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 vacuum induction furnace argon blowing device, comprising an induction furnace body (1), It is characterized in that Also included are: A gas pressure slip ring (5) is installed at the bottom center of the induction furnace body (1); A gas distribution box (6) is arranged at the bottom of the inner wall of the induction furnace body (1); A folding ventilation assembly is installed on the side of the air distribution box (6); A transmission rod (12) is arranged on the top of the air distribution box (6); The motor (13) is mounted on an end of the transmission rod (12) away from the air distribution box (6).

2. The argon blowing device for a vacuum induction furnace according to claim 1, characterized in that: The folding ventilation assembly comprises a first exhaust pipe (7), a spherical tube (8), a second exhaust pipe (9) and a hemispherical baffle (10), wherein the first exhaust pipe (7) is fixed to the outer surface of an air distribution box (6), the spherical tube (8) is fixed to one end of the first exhaust pipe (7) away from the air distribution box (6), the second exhaust pipe (9) is connected to the first exhaust pipe (7) via a rotating shaft, and the hemispherical baffle (10) is fixed to one side of the second exhaust pipe (9) close to the first exhaust pipe (7).

3. The argon blowing device for a vacuum induction furnace according to claim 1, characterized in that: Three groups of limit blocks (2) are arranged on the top of the induction furnace body (1).

4. The argon blowing device for a vacuum induction furnace according to claim 1, characterized in that: A top cover (3) is movably mounted on the top of the induction furnace body (1).

5. The argon blowing device for a vacuum induction furnace according to claim 1, characterized in that: An air inlet pipe (4) is fixed to the side of the induction furnace body (1).

6. The argon blowing device for a vacuum induction furnace according to claim 1, characterized in that: A plurality of support rods are fixed in the middle of the top of the gas distribution box (6), and a clamping groove (11) is formed between the support rods.

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