Vacuum melting furnace feeding device

Abstract

This utility model discloses a feeding device for a vacuum melting furnace, relating to the field of vacuum melting furnace technology. It includes a furnace body mounted on a base, a feed pipe connected to the furnace body, a connecting pipe connected to the middle section of the top of the feed pipe, and a feed hopper connected to the top of the connecting pipe. A pusher is slidably mounted inside the feed pipe. A rotating shaft is rotatably mounted on the feed hopper, and a scraper is fixedly connected to the rotating shaft for scraping the inner wall of the feed hopper. A support plate is fixedly connected to the outer wall of the feed hopper, and a reciprocating screw is rotatably mounted on the support plate. The reciprocating screw drives the pusher to reciprocate within the feed pipe via a linkage mechanism. This vacuum melting furnace feeding device, through the arrangement of the feed pipe, pusher, and scraper, scrapes the inner walls of the feed hopper and connecting pipe, reducing adhering substances while ensuring uniform feeding and improving the efficiency of the vacuum melting furnace feeding device.

Description

Technical Field

[0001] This utility model relates to the field of vacuum melting furnace technology, and in particular to a vacuum melting furnace feeding device. Background Technology

[0002] A vacuum melting furnace is a special type of equipment used for melting metals and alloys under vacuum conditions. It is mainly used in the research and production of high-temperature alloys, special steels, non-ferrous metals and their alloys.

[0003] In the prior art, when adding high-temperature melt into a vacuum melting furnace using a feeding device, the high-temperature melt sometimes adheres to the inner wall of the feed pipe due to its characteristics. This not only affects the feeding speed but may also lead to uneven feeding, thus affecting the quality of the product.

[0004] Therefore, it is necessary to propose a vacuum melting furnace feeding device to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a feeding device for a vacuum melting furnace, in order to solve the problem in the prior art that when adding high-temperature melt into a vacuum melting furnace using a feeding device, the high-temperature melt sometimes adheres to the inner wall of the feed pipe due to its characteristics, which not only affects the feeding speed but may also lead to uneven feeding and affect the quality of the product.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a vacuum melting furnace feeding device, comprising a melting furnace body disposed above a base, a feeding pipe connected to the melting furnace body, a connecting pipe connected to the middle section of the top end of the feeding pipe, and a feeding bucket connected to the top end of the connecting pipe.

[0007] A pusher is slidably disposed inside the feed pipe;

[0008] A rotating shaft is rotatably mounted on the feed hopper, and a scraper for pushing and scraping the inner wall of the feed hopper is fixedly connected to the rotating shaft.

[0009] A support plate is fixedly connected to the outer wall of the feed hopper, and a reciprocating screw is rotatably mounted on the support plate. The reciprocating screw drives the push column to reciprocate inside the feed tube through a linkage mechanism. The reciprocating screw and the rotating shaft rotate synchronously through a transmission mechanism.

[0010] Preferably, the linkage mechanism includes an inclined plate, an inclined groove, and a slider. The inclined plate is fixedly connected to the push column, the inclined groove is formed on the inclined plate, the slider is slidably disposed inside the inclined groove, and the slider cooperates with the reciprocating lead screw.

[0011] Preferably, the scraper extends into the interior of the connecting pipe.

[0012] Preferably, a bracket is fixedly connected to the top of the feed hopper, a motor is fixedly connected to the top of the bracket, and the rotating shaft is fixedly connected to the drive shaft of the motor.

[0013] Preferably, a stirring blade is fixedly connected to the rotating shaft.

[0014] Preferably, a vacuum valve is installed on the feed hopper.

[0015] Preferably, the transmission mechanism includes a first pulley, a belt, and a second pulley. The first pulley is fixedly connected to the rotating shaft, and the second pulley is fixedly connected to the reciprocating lead screw. The first pulley and the second pulley are connected by belt drive.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model, by setting up structures such as a feeding pipe, a pusher, and a scraper, pushes and scrapes the inner wall of the feeding barrel and the inner wall of the connecting pipe, reducing the adhering substances, while ensuring the uniformity of feeding and improving the efficiency of the feeding device for the vacuum melting furnace.

[0018] 2. When the pusher closes the bottom of the connecting pipe, the material can be poured into the inside of the feed bucket from the feed chute. At this time, the smelting furnace body is not connected to the external environment, which helps to maintain the vacuum state in the subsequent process.

[0019] 3. After feeding is completed, the pusher will close the bottom of the connecting pipe, and the inside of the feeding bucket will not be affected by the heat of the smelting furnace body;

[0020] 4. The system incorporates linkage and transmission mechanisms, enabling a single motor to perform functions such as agitation, scraping, and closing, thereby improving equipment utilization efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the vacuum melting furnace feeding device of this utility model.

[0022] Figure 2 This is a schematic diagram of the inclined plate and inclined groove structure of this utility model.

[0023] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0024] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0025] In the diagram: 1. Base; 2. Furnace body; 3. Feed pipe; 4. Feed bucket; 5. Connecting pipe; 6. Push column; 7. Support; 8. Motor; 9. Rotating shaft; 10. Scraper; 11. Stirring blade; 12. Support plate; 13. Reciprocating screw; 14. Inclined plate; 15. Inclined groove; 16. Sliding block; 17. Transmission mechanism; 1701. First pulley; 1702. Belt; 1703. Second pulley; 18. Vacuum valve. Detailed Implementation

[0026] This utility model provides, for example Figures 1-4 The vacuum melting furnace feeding device shown includes a melting furnace body 2 mounted on a base 1, a rotating shaft 9 rotatably mounted on a feed hopper 4, a bracket 7 fixedly connected to the top of the feed hopper 4, a motor 8 fixedly connected to the top of the bracket 7, the rotating shaft 9 fixedly connected to the drive shaft of the motor 8, and multiple stirring blades 11 fixedly connected to the rotating shaft 9. The motor 8 drives the stirring blades 11 to rotate via the rotating shaft 9, ensuring uniform material flow and preventing segregation.

[0027] A feed pipe 3 is connected to the smelting furnace body 2. The feed pipe 3 is inclined, and the end away from the smelting furnace body 2 is inclined upward to facilitate the material to slide into the interior of the smelting furnace body 2. The middle section of the top of the feed pipe 3 is connected to a connecting pipe 5, and the top of the connecting pipe 5 is connected to a feed bucket 4. The top of the feed bucket 4 is provided with a feed trough, and the inside of the feed trough is provided with a cover plate. When adding material, the cover plate is removed, and the material is poured into the feed bucket 4 from the feed trough. After the material is added, the cover plate is used to close the feed trough.

[0028] The material enters the inside of the feed pipe 3 through the connecting pipe 5 and slides into the furnace body 2.

[0029] A vacuum valve 18 is installed on the feed hopper 4, and the vacuum valve 18 works in conjunction with the factory's vacuum system to keep the inside of the feed hopper 4 under vacuum after the material is added.

[0030] A pusher 6 is slidably installed inside the feed pipe 3. A slide plate, a groove and other structures are provided between the pusher 6 and the inner wall of the feed pipe 3, so that the pusher 6 can only slide back and forth along the axis of the feed pipe 3 inside the feed pipe 3, and will not rotate.

[0031] When the pusher 6 slides back and forth inside the feed pipe 3, it can quickly push the material inside the feed pipe 3 into the smelting furnace body 2, avoiding the generation of residue inside the feed pipe 3.

[0032] The pusher 6 slides back and forth inside the feed pipe 3, causing the bottom of the connecting pipe 5 to open intermittently, allowing the material to enter the feed pipe 3 intermittently, and then be pushed into the smelting furnace body 2 by the pusher 6, ensuring the uniformity of the feeding.

[0033] At the same time, when the pusher 6 closes the bottom of the connecting pipe 5, the material can be poured into the inside of the feed tank 4 from the feed chute. At this time, the furnace body 2 is not connected to the external environment, which helps to maintain the vacuum state in the later stage.

[0034] In addition, after the feeding is completed, the pusher 6 closes the bottom end of the connecting pipe 5, so that the inside of the feed barrel 4 is not affected by the heat of the smelting furnace body 2.

[0035] Considering that materials are easy to stick to the inner wall of the feed barrel 4, a scraper 10 for pushing and scraping the inner wall of the feed barrel 4 is fixedly connected to the rotating shaft 9. The scraper 10 extends into the inside of the connecting pipe 5. When the motor 8 drives the stirring blade 11 to rotate through the rotating shaft 9, the scraper 10 pushes and scrapes the inner wall of the feed barrel 4 and the inner wall of the connecting pipe 5 to reduce the adhesion.

[0036] A support plate 12 is fixedly connected to the outer wall of the feed hopper 4. A reciprocating screw 13 is rotatably mounted on the support plate 12. The reciprocating screw 13 drives the push column 6 to reciprocate inside the feed pipe 3 through a linkage mechanism. The reciprocating screw 13 and the rotating shaft 9 rotate synchronously through a transmission mechanism 17.

[0037] In a specific configuration, the linkage mechanism includes an inclined plate 14, an inclined groove 15, and a slider 16. The inclined plate 14 is fixedly connected to the push column 6, the inclined groove 15 is formed on the inclined plate 14, and the slider 16 is slidably disposed inside the inclined groove 15. A ball bearing or similar structure is provided between the slider 16 and the inner wall of the inclined groove 15 to ensure smooth sliding. The slider 16 cooperates with the reciprocating screw 13. The reciprocating screw 13 is composed of two helical grooves with the same pitch and opposite directions. The two ends are connected by a circular arc / parabola / sine curve to form a closed motion trajectory (not shown in the figure). Under the limiting cooperation of the inclined plate 14, the slider 16 is driven to reciprocate along the axial direction of the reciprocating screw 13.

[0038] Specifically, refer to Figure 2 As shown, when slider 16 moves upward, slider 16 slides upward inside the inclined groove 15, causing inclined plate 14 to move to the right; while when slider 16 moves downward, slider 16 slides downward inside the inclined groove 15, causing inclined plate 14 to move to the left, thereby causing inclined plate 14 to drive push column 6 to reciprocate inside feed pipe 3.

[0039] A ball bearing or similar structure can be installed between the pusher 6 and the inner wall of the feed pipe 3 to ensure the smooth sliding of the pusher 6.

[0040] In its specific configuration, the transmission mechanism 17 includes a first pulley 1701, a belt 1702, and a second pulley 1703. The first pulley 1701 is fixedly connected to the rotating shaft 9, and the second pulley 1703 is fixedly connected to the reciprocating screw 13. The first pulley 1701 and the second pulley 1703 are connected by the belt 1702. In use, the motor 8 drives the stirring blade 11 to rotate through the rotating shaft 9, and the scraper 10 scrapes the inner wall of the feed barrel 4 and the inner wall of the connecting pipe 5 to reduce the adhesion. At the same time, it drives the first pulley 1701 to rotate. Since the first pulley 1701 and the second pulley 1703 are connected by the belt 1702, the second pulley 1703 drives the reciprocating screw 13 to rotate, driving the slider 16 to reciprocate along the axial direction of the reciprocating screw 13. The inclined plate 14 drives the pusher 6 to reciprocate inside the feed pipe 3.

[0041] This utility model, by setting up a feeding pipe 3, a pusher 6, a scraper 10 and other structures, pushes and scrapes the inner wall of the feeding barrel 4 and the inner wall of the connecting pipe 5, reducing the adhesion of substances, while ensuring the uniformity of feeding and improving the efficiency of the vacuum melting furnace feeding device.

Claims

1. A charging device for a vacuum melting furnace comprising a melting furnace body (2) arranged above a base (1), characterized in that: The furnace body (2) is connected to a feed pipe (3), the middle section of the top end of the feed pipe (3) is connected to a connecting pipe (5), and the top end of the connecting pipe (5) is connected to a feed bucket (4). The feed pipe (3) is internally equipped with a pusher (6); A rotating shaft (9) is rotatably mounted on the feed barrel (4), and a scraper (10) for scraping the inner wall of the feed barrel (4) is fixedly connected to the rotating shaft (9). A support plate (12) is fixedly connected to the outer wall of the feed hopper (4). A reciprocating screw (13) is rotatably mounted on the support plate (12). The reciprocating screw (13) drives the push column (6) to reciprocate inside the feed pipe (3) through a linkage mechanism. The reciprocating screw (13) and the rotating shaft (9) rotate synchronously through a transmission mechanism (17).

2. A vacuum melting furnace charging device according to claim 1, characterized in that: The linkage mechanism includes an inclined plate (14), an inclined groove (15), and a slider (16). The inclined plate (14) is fixedly connected to the push column (6). The inclined groove (15) is opened on the inclined plate (14). The slider (16) is slidably disposed inside the inclined groove (15). The slider (16) cooperates with the reciprocating lead screw (13).

3. The vacuum melting furnace feeding device according to claim 1, characterized in that: The scraper (10) extends into the interior of the connecting pipe (5).

4. The vacuum melting furnace feeding device according to claim 1, characterized in that: The top of the feed hopper (4) is fixedly connected to a bracket (7), the top of the bracket (7) is fixedly connected to a motor (8), and the rotating shaft (9) is fixedly connected to the drive shaft of the motor (8).

5. The vacuum melting furnace feeding device according to claim 1, characterized in that: A stirring blade (11) is fixedly connected to the rotating shaft (9).

6. The vacuum melting furnace feeding device according to claim 1, characterized in that: A vacuum valve (18) is installed on the feed hopper (4).

7. The vacuum melting furnace feeding device according to claim 1, characterized in that: The transmission mechanism (17) includes a first pulley (1701), a belt (1702), and a second pulley (1703). The first pulley (1701) is fixedly connected to the rotating shaft (9), and the second pulley (1703) is fixedly connected to the reciprocating lead screw (13). The first pulley (1701) and the second pulley (1703) are connected by the belt (1702).

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