Secondary feeding device of vacuum induction gas atomization pulverizing furnace

Abstract

The utility model relates to a secondary feeding device of a vacuum induction gas atomization powder making furnace, and belongs to the technical field of metal powder production equipment in the metallurgical industry. According to the technical scheme, a sealed cabin (2) is provided with a cabin door (7) and a shielding gas connector (6), a gear (5), a sliding rail (9) and a rack (11) are arranged in the sealed cabin (2), the sliding rail (9) is fixed in the sealed cabin (2), the rack (11) is connected to the sliding rail (9) in a sliding mode, and a rocker arm (12) is arranged on the gear (5); one end of the rack (11) is provided with a screwed joint (13), one end of the sealed cabin (2) is provided with an extension port, and the extension port is provided with a pneumatic valve (10); and one end of the feeding pipe (4) is in threaded connection with the threaded joint (13) of the rack (11), and the other end of the feeding pipe (4) is provided with a sealing door (15). The vacuum induction gas atomization powder making furnace has the advantages that different raw materials can be added into the crucible in the vacuum induction gas atomization powder making furnace at any time in the alloy ingredient smelting process.

Description

Technical Field

[0001] The utility model relates to a secondary feeding device for a vacuum induction gas atomization powder making furnace, belonging to the technical field of metal powder production equipment in the metallurgical industry. Background Art

[0002] Vacuum atomization powder making equipment, as the main equipment for the industrial production of metal powder, is widely used in key fields such as additive manufacturing, powder metallurgy, aerospace and medical care.

[0003] Vacuum induction gas atomization powder making equipment (VIGA) is mainly used to prepare high-performance iron-based, nickel-based, cobalt-based and other advanced metal and alloy powder materials. The vacuum induction melting inert gas atomization technology process is based on the requirements of metal powder composition. The alloy materials prepared in a certain ratio are placed in the crucible in the vacuum induction gas atomization powder making furnace, and smelted under vacuum conditions. After the alloy ingredients are melted to form molten metal, the smelting chamber is filled with inert gas (usually argon) for protection, and the molten metal is poured into the tundish and enters the guide nozzle and nozzle. At this time, the melt flow is atomized by high-pressure gas, and the atomized metal droplets solidify and settle in the atomization tower to form metal powder.

[0004] The alloy ingredients are melted under vacuum conditions. During the melting process, it is inconvenient to carry out secondary feeding because there is no special secondary feeding device. Therefore, secondary feeding can only be carried out according to its composition after the melting is completed and the alloy is taken out of the furnace, which wastes energy and affects production. Utility Model Content

[0005] The utility model aims to provide a secondary feeding device for a vacuum induction gas atomization powder making furnace, which can add different raw materials to the crucible in the vacuum induction gas atomization powder making furnace at any time during the alloy batch smelting process, so as to solve the problems existing in the background technology.

[0006] The technical solution of the utility model is:

[0007] A secondary feeding device for a vacuum induction atomization powder making furnace comprises a sealed cabin, a feeding pipe, a gear, a protective gas joint, a hatch, a slide rail, a pneumatic valve, a rack and a rocker arm. The sealed cabin is provided with a hatch and a protective gas joint, and the sealed cabin is provided with a gear, a slide rail and a rack. The slide rail is fixed inside the sealed cabin, the rack is slidably connected to the slide rail, the gear is meshed with the rack, and the gear is provided with a rocker arm; one end of the rack is provided with a threaded joint, one end of the sealed cabin is provided with an extension port of the rack and the threaded joint, and the extension port is provided with a pneumatic valve; one end of the feeding pipe is threadedly connected to the threaded joint of the rack, and the other end of the feeding pipe is provided with a sealing door.

[0008] One end of the sealing door is rotatably connected to the feeding pipe, the other end of the sealing door is fixedly connected to one end of a draw rope, the other end of the draw rope is connected to a latch, and the latch is inserted and pulled out of the sealing cabin.

[0009] The pull rope is hooked on the latch pin through a hook.

[0010] The drawstring is located outside the sealed cabin and the feeding pipe.

[0011] The sealed cabin is rectangular, the cabin door is arranged on the top of the sealed cabin, and a rack and an end of the threaded joint protruding port are arranged close to the sealed cabin.

[0012] The sealed cabin is rotatably connected to the bracket.

[0013] The bracket is composed of two support columns and a support beam welded between the two support columns.

[0014] A support plate matched with the sealed cabin is arranged on the support beam in the bracket.

[0015] The two ends of the gear are rotatably connected to the sealed cabin body.

[0016] When the utility model is used, the device is fixed on a vacuum induction gas atomization powder making furnace. During the alloy batch smelting process, when it is necessary to add secondary materials to the crucible, the raw materials to be added are firstly put into the feeding pipe. After the feeding pipe is installed, the protective gas is filled into the sealed cabin, the pneumatic valve is opened, the rocker arm is shaken to lower the feeding pipe above the crucible in the furnace, the latch is pulled out to loosen the pull rope, the sealing door is opened, and the raw materials are poured into the crucible steel liquid by their own weight.

[0017] The utility model has the beneficial effect that different raw materials can be added to the crucible in the vacuum induction gas atomization powder making furnace at any time during the alloy batch smelting process, so as to ensure that the composition of the metal powder after atomization meets the requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the sealed cabin of the utility model;

[0020] Figure 3 This is a schematic diagram of the driving mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the feeding pipe of the utility model;

[0022] In the figure: bracket 1, sealed cabin 2, driving mechanism 3, feeding pipe 4, gear 5, protective gas joint 6, cabin door 7, latch 8, slide rail 9, pneumatic valve 10, rack 11, rocker arm 12, rack end threaded joint 13, feeding pipe threaded joint 14, sealing door 15, pull rope 16. DETAILED DESCRIPTION

[0023] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0024] Refer to the attached Figure 1-4 A secondary feeding device for a vacuum induction atomization powder making furnace comprises a sealed cabin 2, a feeding pipe 4, a gear 5, a protective gas joint 6, a hatch 7, a slide rail 9, a pneumatic valve 10, a rack 11 and a rocker arm 12. The sealed cabin 2 is provided with a hatch 7 and a protective gas joint 6. The sealed cabin 2 is provided with a gear 5, a slide rail 9 and a rack 11. The slide rail 9 is fixed inside the sealed cabin 2. The rack 11 is slidably connected to the slide rail 9. The gear 5 is meshed with the rack 11, and a rocker arm 12 is provided on the gear 5; a threaded joint 13 is provided at one end of the rack 11, and an extension port of the rack 11 and the threaded joint 13 is provided at one end of the sealed cabin 2, and a pneumatic valve 10 is provided at the extension port; one end of the feeding pipe 4 is threadedly connected to the threaded joint 13 of the rack 11, and a sealing door 15 is provided at the other end of the feeding pipe 4.

[0025] In this embodiment, refer to the attached Figure 1-4 The bracket 1 is welded by three square steel pipes of model 50mm*50mm, two of which are 1500mm long and serve as support columns, and the other is 500mm long and serves as a support beam.

[0026] According to the angle at which the sampling device can penetrate into the crucible in the powder making furnace, a 300mm*300mm steel plate with a thickness of 20mm is welded at a 45-degree angle in the middle of the support beam as a support plate for the sealed cabin 2. The bracket 1 enables the sampling device to be installed at a suitable position and angle for easy sampling.

[0027] The sealed cabin 2 is made of 5mm thick steel plate with a size of 1000mm*150mm*150mm. A protective gas connector 6 is welded on one end, and a hole is opened on the other end according to the width of the rack 11 to ensure that the rack 11 can be extended. On the upper side of the sealed cabin 2, an openable and closable door 7 is made for installing the sampling tube 4. The length of the door 7 is 650mm. A pluggable latch 8 can be installed at a suitable position on the right side of the sealed cabin door 7.

[0028] According to the size of the sealed cabin 2, select the CCQ-150 pneumatic ultra-high vacuum gate valve to be welded to the sealed cabin, select the observation hole at the appropriate position of the powder making furnace cover to transform it into a 150mm*150mm round hole, and fix the pneumatic valve to the furnace cover with screws to ensure good sealing.

[0029] The feeding pipe 4 is a steel pipe with a thickness of 3mm and a size of 500mm*60mm*60mm. A feeding pipe threaded joint 14 is welded at one end, and an openable and closable sealing door 15 is provided at the other end. The sealing door 15 is controlled by a pull rope 16. One end of the pull rope 16 is fixed on the sealing door 15, and the other end of the pull rope 16 is hooked on a pluggable latch 8.

[0030] The driving mechanism 3 is composed of a rack 11 and a gear 5 connected to a rocker arm 12 , and a rack threaded joint 13 is welded to one end of the rack 11 .

[0031] For on-site production, a VIGA-250KG vacuum induction atomization powder making furnace is used. Before metal powder production, the device is installed on the furnace cover of the powder making furnace. During the alloy batch smelting process, if it is necessary to add secondary materials to the crucible, first put the raw materials to be added into the feeding tube 4. After installing the feeding tube 4, fill the sealed cabin 2 with protective gas, open the pneumatic valve 10, shake the rocker arm 12 to lower the feeding tube 4 to the top of the crucible in the furnace, remove the latch 8 and release the pull rope 16, open the sealing door 15, and pour the raw materials into the crucible steel liquid by their own weight. Shake the rocker arm 12 to retract the feeding tube 4 into the sealed cabin 2, and close the pneumatic valve 10.

Claims

1. A secondary feeding device for a vacuum induction gas atomization powder making furnace, characterized in that: The invention comprises a sealed cabin (2), a feeding pipe (4), a gear (5), a protective gas joint (6), a hatch (7), a slide rail (9), a pneumatic valve (10), a rack (11) and a rocker arm (12). The sealed cabin (2) is provided with a hatch (7) and a protective gas joint (6). The sealed cabin (2) is provided with a gear (5), a slide rail (9) and a rack (11). The slide rail (9) is fixed inside the sealed cabin (2). The rack (11) is slidably connected to the slide rail (9). The gear (5) meshes with the rack (11). The gear (5) is provided with a rocker arm (12). One end of the rack (11) is provided with a threaded joint (13). One end of the sealed cabin (2) is provided with an extension port of the rack (11) and the threaded joint (13). The extension port is provided with a pneumatic valve (10). One end of the feeding pipe (4) is threadedly connected to the threaded joint (13) of the rack (11). The other end of the feeding pipe (4) is provided with a sealing door (15).

2. A secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 1, characterized in that: One end of the sealing door (15) is rotatably connected to the feeding pipe (4), and the other end of the sealing door (15) is fixedly connected to one end of a pull rope (16). The other end of the pull rope (16) is connected to a latch (8), and the latch (8) is inserted and pulled out of the sealing cabin (2).

3. A secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 2, characterized in that: The pull rope (16) is hooked on the latch (8) via a hook.

4. A secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 3, characterized in that: The pull rope (16) is located outside the sealed cabin (2) and the feeding pipe (4).

5. The secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 1, characterized in that: The sealed cabin (2) is rectangular, the cabin door (7) is arranged on the top of the sealed cabin (2), and a rack (11) and an end of the threaded joint (13) extending out are provided near the sealed cabin (2).

6. A secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 1 or 5, characterized in that: The sealed cabin (2) is rotatably connected to the bracket (1).

7. A secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 6, characterized in that: The support (1) is composed of two support columns and a support beam welded between the two support columns.

8. The secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 7, characterized in that: A support plate matching the sealed cabin (2) is provided on the support beam in the bracket (1).

9. The secondary feeding device for a vacuum induction gas atomization powder making furnace according to claim 1, characterized in that: Both ends of the gear (5) are rotatably connected to the body of the sealed cabin (2).

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