Efficient energy-saving type vacuum induction melting furnace

Abstract

The utility model relates to an efficient energy-saving type vacuum induction melting furnace, and belongs to the technical field of metallurgical equipment, the efficient energy-saving type vacuum induction melting furnace comprises a melting furnace main body, an induction coil is fixed on the outer surface of the melting furnace main body, the top end of the melting furnace main body is fixed and communicated with a vacuum gauge, and an anti-oxidation assembly is arranged at the top end of the melting furnace main body; the anti-oxidation assembly comprises a vacuum pump, an inert gas conveying pipe, a connecting pipe fixedly installed at the output end of the vacuum pump, a treatment box fixedly installed at the other end of the connecting pipe and three treatment plates fixedly installed in the treatment box. According to the efficient energy-saving type vacuum induction smelting furnace, by arranging the anti-oxidation assembly, whether the interior of the smelting furnace is in a vacuum state or not can be monitored in real time, and meanwhile inert gas can be added into the smelting furnace through the inert gas conveying pipe, so that a metal material is not prone to being oxidized in the smelting process; and therefore, the influence on the quality and performance of a product after the metal material smelting furnace can be reduced, the pumped air can be treated, and environmental pollution is avoided.

Description

Technical Field

[0001] This application relates to the technical field of metallurgical equipment, and specifically relates to an energy-efficient vacuum induction melting furnace. Background Art

[0002] The melting furnace uses a 200 - 2500 Hz intermediate frequency power supply for induction heating, with a power range of 20 - 2500 KW. According to its characteristics, it can also be called an intermediate frequency electric furnace. It is mainly used for smelting precious metals such as gold, high-temperature alloys, and refractory metals such as titanium alloys. Its application scenarios include, but are not limited to, the preparation of metal materials in the fields of aviation, aerospace, automotive, electronics, etc.

[0003] The vacuum melting furnace is mainly used for the melting treatment of metal materials (such as stainless steel, nickel-based alloys, copper, alloy steel, nickel-cobalt alloys, rare earth neodymium iron boron, etc.) under vacuum or protective atmosphere conditions. It can perform vacuum refining treatment and precision casting of alloy steel. Usually, the vacuum melting furnace needs to perform a vacuum pumping operation during the melting process. After one processing, the processing often needs to be terminated, and then operations such as vacuum pumping are performed again. Since it is inconvenient to ensure an absolute vacuum inside the melting furnace after vacuum pumping, it is easy to affect the purity of metal melting, making the metal prone to oxidation during the melting process, thereby affecting the quality and performance of the product after melting the metal material. Utility Model Content

[0004] Aiming at the deficiencies of the prior art, this application provides an energy-efficient vacuum induction melting furnace, which has advantages such as not being easily oxidized and solves the problem of easy oxidation.

[0005] To achieve the above object, this application provides the following technical solution: An energy-efficient vacuum induction melting furnace, including a melting furnace main body, an induction coil is fixed on the outer surface of the melting furnace main body, a vacuum gauge is fixedly connected to the top of the melting furnace main body, and an anti-oxidation component is provided at the top of the melting furnace main body;

[0006] The anti-oxidation component includes a vacuum pump, an inert gas transmission pipe, a connecting pipe fixedly installed at the output end of the vacuum pump, a processing box fixedly installed at the other end of the connecting pipe, three processing plates fixedly installed inside the processing box, a pumping plate fixedly installed at the front end of the processing plate, and a limiting structure fixedly installed on the right side of the pumping plate.

[0007] By adopting the above technical solution, it is possible to monitor in real time whether the inside of the melting furnace main body is in a vacuum state. At the same time, the inert gas transmission pipe can add inert gas into the melting furnace main body, making the metal material not easily oxidized during the melting process, thereby reducing the impact on the quality and performance of the product after melting the metal material, and can also process the extracted air to avoid environmental pollution.

[0008] Furthermore, three through holes are provided at the front end of the processing box, and the processing plate is slidably connected to the inner side of the through holes.

[0009] With the above technical solution, the processing plate can be drawn out of the processing box.

[0010] Furthermore, an electronic valve is fixed on the outer surface of the inert gas transmission pipe, and the input end of the vacuum pump and the lower end of the inert gas transmission pipe are both fixedly connected and communicated with the top end of the main body of the melting furnace.

[0011] With the above technical solution, it is convenient to extract the gas in the main body of the melting furnace and add inert gas into the main body of the melting furnace.

[0012] Furthermore, the limiting structure includes a vertical plate, two limiting blocks, a pull rod fixedly installed and hinged to the right sides of the two limiting blocks, a moving block fixedly installed at the other end of the pull rod, an operating block fixedly installed at the front end of the moving block, and a spring fixedly installed on the opposite sides of the upper and lower moving blocks.

[0013] With the above technical solution, the fixed extraction plate can be limited to prevent the processing plate from moving out of the processing box due to external mechanical vibration force.

[0014] Furthermore, two limiting holes are provided on the right side wall of the extraction plate, and the limiting blocks are located inside the limiting holes and are inserted therein.

[0015] With the above technical solution, the extraction plate can be fixed to the front end of the processing box, so that the processing plate can be stably fixed in the processing box.

[0016] Furthermore, the vertical plate is fixed to the front end of the processing box, and two through holes are provided on the left side of the vertical plate. The limiting blocks are slidably connected to the inner sides of the through holes.

[0017] With the above technical solution, it is convenient for the limiting blocks to move out of the inside of the vertical plate.

[0018] Furthermore, a sliding hole is provided at the front end of the vertical plate, and the two operating blocks are slidably connected to the inner side of the sliding hole.

[0019] With the above technical solution, the operating block is convenient to be connected and fixed to the moving block, so that the staff can drive the moving block to move through the operating block.

[0020] Furthermore, two transverse sliding grooves are provided on the front and rear walls of the inner cavity of the vertical plate. The limiting blocks are in a T shape and are slidably connected to the inner sides of the transverse sliding grooves. Two vertical sliding grooves are provided on the front and rear walls of the inner cavity of the vertical plate. The rear end of the moving block is located inside the vertical sliding grooves and is slidably connected thereto.

[0021] With the above technical solution, the limiting blocks and the moving blocks are stably moved inside the inner cavity of the vertical plate.

[0022] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0023] The high-efficiency and energy-saving vacuum induction melting furnace is provided with an anti-oxidation component, which can monitor in real time whether the melting furnace is in a vacuum state. At the same time, an inert gas transmission pipe can add inert gas into the melting furnace, so that the metal material is not easily oxidized during the melting process, thereby reducing the impact on the quality and performance of the product after melting the metal material, and can also treat the extracted air to avoid environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the present application;

[0025] Figure 2 is a schematic structural diagram of the inner cavity of the melting furnace of the present application;

[0026] Figure 3 is a schematic structural diagram of the treatment box and the treatment plate of the present application;

[0027] Figure 4 is a schematic structural diagram of the limiting structure of the present application.

[0028] In the figure: 1, melting furnace main body; 11, heat preservation layer; 12, high-temperature resistant layer; 2, induction coil; 3, vacuum gauge; 31, vacuum pump; 32, connecting pipe; 33, treatment box; 34, inert gas transmission pipe; 35, treatment plate; 36, extraction plate; 37, vertical plate; 38, limiting block; 39, pull rod; 310, moving block; 311, spring; 312, operating block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0030] Please refer to Figure 1-2 , a high-efficiency and energy-saving vacuum induction melting furnace in this embodiment includes a melting furnace main body 1, an induction coil 2 is fixed on the outer surface of the melting furnace main body 1, a vacuum gauge 3 is fixedly connected to the top of the melting furnace main body 1, and an anti-oxidation component is provided at the top of the melting furnace main body 1.

[0031] Meanwhile, the main body 1 of the melting furnace comprises a heat preservation layer 11 and a high-temperature resistant layer 12 combined, making the main body 1 of the melting furnace adopt a double-layer structure, which can effectively reduce the heat dissipation speed of the main body 1 of the melting furnace. The heat preservation layer 11 can be replaced by other heat preservation materials such as light bricks, and the high-temperature resistant layer 12 can be replaced by other high-temperature resistant materials such as silica bricks; moreover, the induction coil 2 is made of conductive material, which can improve the heating efficiency of the main body 1 of the melting furnace, so as to improve the melting efficiency of the main body 1 of the melting furnace and play a certain role in energy conservation.

[0032] Please refer to Figure 1-3 , in this embodiment, the anti-oxidation component includes a vacuum pump 31, an inert gas transmission pipe 34, a connecting pipe 32 fixedly installed at the output end of the vacuum pump 31, a treatment box 33 fixedly installed at the other end of the connecting pipe 32, three treatment plates 35 fixedly installed inside the treatment box 33, a drawing plate 36 fixedly installed at the front end of the treatment plate 35, and a limiting structure fixedly installed on the right side of the drawing plate 36.

[0033] Among them, three through holes are opened at the front end of the treatment box 33, and the treatment plates 35 are slidably connected to the inner sides of the through holes, so that the treatment plates 35 can be inserted into the interior of the treatment box 33, so as to treat the soot in the air extracted from the inner cavity of the main body 1 of the melting furnace. Moreover, the treatment plates 35 are activated carbon plates, and an exhaust pipe is fixedly installed on the left side of the top of the treatment box 33, so as to discharge the treated gas.

[0034] In addition, an electronic valve is fixedly installed on the outer surface of the inert gas transmission pipe 34, and the other end of the inert gas transmission pipe 34 is fixedly connected and communicated with a gas storage pipe filled with inert gas. The input end of the vacuum pump 31 and the lower end of the inert gas transmission pipe 34 are both fixedly connected and communicated with the top of the main body 1 of the melting furnace, which is convenient for the vacuum pump 31 to extract the air in the main body 1 of the melting furnace and for the inert gas transmission pipe 34 to convey inert gas into the inner cavity of the main body 1 of the melting furnace.

[0035] Please refer to Figure 4 , in this embodiment, the limiting structure includes a vertical plate 37, two limiting blocks 38, a pull rod 39 fixedly installed at the right side of the two limiting blocks 38 and hinged, a moving block 310 fixedly installed at the other end of the pull rod 39, an operation block 312 fixedly installed at the front end of the moving block 310, and a spring 311 fixedly installed on the opposite sides of the upper and lower moving blocks 310.

[0036] Secondly, two limiting holes are opened on the right side wall of the drawing plate 36, and the limiting blocks 38 are located inside the limiting holes and are inserted into them, so that the limiting blocks 38 can be inserted into the interior of the drawing plate 36, so as to fix the drawing plate 36 on the treatment box 33.

[0037] Moreover, the vertical plate 37 is fixedly installed at the front end of the treatment box 33, two through holes are opened on the left side of the vertical plate 37, and the limiting blocks 38 are slidably connected to the inner sides of the through holes, so that the limiting blocks 38 can be moved out of the interior of the vertical plate 37.

[0038] In addition, a sliding hole is provided at the front end of the vertical plate 37, and two operating blocks 312 are slidably connected to the inner side of the sliding hole so that the operating blocks 312 can penetrate out of the interior of the vertical plate 37.

[0039] At the same time, two transverse sliding grooves are provided on the front and rear walls of the inner cavity of the vertical plate 37. The limiting block 38 is in a T shape and is slidably connected to the inner side of the transverse sliding groove, which can limit the moving range of the limiting block 38 so that it can accurately move out of the interior of the vertical plate 37. Vertical sliding grooves are provided on the front and rear walls of the inner cavity of the vertical plate 37. The rear end of the moving block 310 is located inside the vertical sliding groove and is slidably connected thereto, preventing the moving block 310 from tilting and enabling the moving block 310 to move smoothly inside the vertical plate 37.

[0040] It should be noted that the induction coil 2, the vacuum gauge 3, the vacuum pump 31 and the electronic components mentioned in the text are all well-known to the public in the prior art, and the electrical components mentioned in the text are all connected to the controller and the power supply. The control mode of this new type of implementation is controlled by the controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of the power supply also belongs to the well-known common knowledge in this field, so the control mode and circuit connection of this utility model will not be explained in detail.

[0041] The working principle of the above embodiment is as follows:

[0042] When in use, when the vacuum gauge 3 senses that the inner cavity of the melting furnace main body 1 is not in a vacuum state, the vacuum gauge 3 sends a signal to the control end, causing the control end to control the vacuum pump 31 and the electronic valve to work, so that the vacuum pump 31 can pump out the air in the melting furnace main body 1, facilitating real-time monitoring of whether the melting furnace main body 1 is in a vacuum state. At the same time, the inert gas supply pipe 34 can add inert gas into the melting furnace main body 1, making it difficult for the metal material to oxidize during the melting process, thereby reducing the impact on the quality and performance of the product after melting the metal material;

[0043] When the vacuum pump 31 pumps out the air in the melting furnace main body 1 and transports it to the treatment box 33, the three treatment plates 35 can treat impurities such as soot in the pumped air, and the treated gas is discharged through the discharge pipe of the treatment box 33, thereby reducing the phenomenon of pollution to the external environment caused by the air in the inner cavity of the melting furnace main body 1. The two operating blocks 312 move relative to each other, causing the operating blocks 312 to drive the two moving blocks 310 to move relative to each other. The two moving blocks 310 can squeeze the springs 311, and while the two moving blocks 310 move relative to each other, they can pull the two limiting blocks 38 to move to the right through the two pull rods 39, gradually moving them into the interior of the vertical plate 37, thereby being able to pull the extraction plate 36 forward to facilitate the extraction of the treatment plate 35 from the treatment box 33 for easy replacement of the treatment plate 35.

Claims

1. A high-efficiency and energy-saving vacuum induction melting furnace, comprising a melting furnace body (1), characterized in that: An induction coil (2) is fixed on the outer surface of the smelting furnace body (1), a vacuum gauge (3) is fixed and connected to the top of the smelting furnace body (1), and an anti-oxidation component is provided on the top of the smelting furnace body (1); The anti-oxidation component comprises a vacuum pump (31), an inert gas pipe (34), a connecting pipe (32) fixedly mounted on the output end of the vacuum pump (31), a processing box (33) fixedly mounted on the other end of the connecting pipe (32), three processing plates (35) fixedly mounted inside the processing box (33), a draw plate (36) fixedly mounted on the front end of the processing plate (35), and a limiting structure fixedly mounted on the right side of the draw plate (36).

2. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 1, characterized in that: The front end of the processing box (33) is provided with three through holes, and the processing plate (35) is slidably connected to the inner sides of the through holes.

3. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 1, characterized in that: An electronic valve is fixed on the outer surface of the inert gas supply pipe (34), and the input end of the vacuum pump (31) and the lower end of the inert gas supply pipe (34) are both fixed and connected to the top of the smelting furnace body (1).

4. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 1, characterized in that: The limiting structure comprises a vertical plate (37), two limiting blocks (38), a pull rod (39) fixedly mounted on the right sides of the two limiting blocks (38) and hinged, a moving block (310) fixedly mounted on the other end of the pull rod (39), an operating block (312) fixedly mounted on the front end of the moving block (310), and a spring (311) fixedly mounted on opposite sides of the upper and lower moving blocks (310).

5. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 4, characterized in that: The right side wall of the draw plate (36) is provided with two limiting holes, and the limiting block (38) is located inside the limiting hole and plugged therein.

6. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 4, characterized in that: The vertical plate (37) is fixed to the front end of the processing box (33), and two through holes are opened on the left side of the vertical plate (37). The limiting block (38) is slidably connected to the inner side of the through holes.

7. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 4, characterized in that: A sliding hole is provided at the front end of the vertical plate (37), and the two operating blocks (312) are slidably connected to the inner side of the sliding hole.

8. The high-efficiency and energy-saving vacuum induction melting furnace according to claim 4, characterized in that: The front and rear walls of the inner cavity of the vertical plate (37) are each provided with two transverse sliding grooves, the limiting block (38) is T-shaped, and the limiting block (38) is slidably connected to the inner side of the transverse sliding grooves. The front and rear walls of the inner cavity of the vertical plate (37) are each provided with vertical sliding grooves, and the rear end of the moving block (310) is located on the inner side of the vertical sliding grooves and is slidably connected thereto.

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