Vacuum melting equipment for nickel-chromium electrothermal alloy raw materials

Abstract

The utility model relates to the technical field of metal material processing, in particular to nickel-chromium electrothermal alloy raw material vacuum melting equipment, which comprises an operation table, a melting bin and a melting furnace, two first rotating seats are arranged in the melting bin, first rotating shafts are rotatably arranged on the two first rotating seats, two second rotating seats are arranged on the inner top wall of the melting bin, and the second rotating shafts are rotatably arranged on the second rotating seats. Second rotating shafts are rotationally arranged on the two second rotating seats correspondingly, a transition bin is arranged between the two second rotating shafts, a buffer frame is arranged beside the two second rotating seats, a transverse moving mechanism is arranged on the inner top wall of the smelting bin, and a driving mechanism is arranged on the outer wall of the smelting bin. Three-stage buffering is adopted, metal raw materials are firstly introduced into the transition bin through the buffering frame, then the metal raw materials are introduced into the smelting furnace through the transition bin, and then the metal raw materials are buffered by utilizing the inclined state of the smelting furnace, so that the falling speed of the metal raw materials is reduced, and the smelting efficiency is improved. And the condition of abrasion or damage in the smelting furnace is avoided.

Description

Technical Field

[0001] This utility model relates to the field of metal material processing technology, specifically to a vacuum melting equipment for nickel-chromium electrothermal alloy raw materials. Background Technology

[0002] Nickel-chromium heating alloys are characterized by high high-temperature strength, strong plasticity, excellent ductility, compressive strength, and surface smoothness. They also exhibit stable coefficients and are economically affordable, making them widely used in aerospace, military, and medical device industries. However, the smelting, cooling, and collection of nickel-chromium heating alloy raw materials is an essential manufacturing process. Currently, the smelting equipment for nickel-chromium heating alloys is cumbersome and exposed to air, which can easily lead to pollution and affect the performance of the alloys.

[0003] Chinese utility model patent CN221975772U discloses a vacuum melting device for nickel-chromium electrothermal alloy raw materials, including an operating platform, support legs, a melting chamber, a sealing door, a feed hopper, and a vacuum pump. The inner wall of the melting chamber is equipped with a melting mechanism, which includes a feed buffer section and a discharge cleaning section. Through a transmission structure on rotating rods one and two, the buffer plate automatically rotates upwards and retracts during the pouring of material into the melting furnace, without affecting the furnace's tilting during pouring. After the furnace has finished pouring and returned to its original position, the buffer plate automatically returns to its original position, without affecting subsequent feeding buffering operations. A metering valve at the discharge port of the feed hopper discharges a fixed amount of metal raw material. As the metal raw material falls, it lands on the buffer plate for cushioning, thus slowing its descent and preventing excessive impact on the melting furnace, which could lead to wear or damage inside the furnace.

[0004] However, the above-mentioned patent still has the following shortcomings in actual use: the patent can buffer the falling metal raw materials through the buffer plate, but there is still a large height difference between the buffer plate and the inner bottom wall of the smelting furnace, and the potential energy of the falling metal raw materials is still large. Therefore, there will still be wear or damage inside the smelting furnace. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a vacuum melting equipment for nickel-chromium electrothermal alloy raw materials, in order to solve the problem mentioned in the background art of how to avoid wear or damage to the melting furnace caused by the rapid falling speed of the metal raw materials.

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

[0007] A vacuum melting device for nickel-chromium electrothermal alloy raw materials includes an operating platform, a melting chamber, and a melting furnace. A vacuum pump is installed on the top of the operating platform. A sealed door is installed on the side wall of the melting chamber. A feed hopper is connected to the top of the melting chamber, and a sealed cover is installed on the top of the feed hopper. Two symmetrically arranged first rotating seats are provided inside the melting chamber, each with a first rotating shaft rotatably mounted. Two symmetrically arranged second rotating seats are provided on the inner top wall of the melting chamber, each with a second rotating shaft rotatably mounted. A transition chamber is provided between the two second rotating shafts. The two second rotating seats are located beside... A buffer frame is provided on the side. A lateral movement mechanism for driving the buffer frame to move laterally is provided on the inner top wall of the smelting chamber. The feed hopper is located directly above the buffer frame. The smelting chamber is set on the top of the operating platform. The vacuum pump is connected to the smelting chamber through a pipe. The two ends of the smelting furnace are respectively fixedly connected to two first rotating shafts. The transition chamber is located between the buffer frame and the smelting furnace. The discharge end of the buffer frame is located directly above one edge of the transition chamber. One edge of the smelting furnace is located directly below the other edge of the transition chamber. A drive mechanism for driving the first and second rotating shafts to rotate in opposite directions is provided on the outer wall of the smelting chamber.

[0008] Preferably, the transverse movement mechanism includes a vertical plate, two guide rods, and a pushing assembly. A spring is sleeved on the guide rod, and guide seats are provided on both sides of the buffer frame. The vertical plate is installed on the inner top wall of the smelting chamber. The two guide rods are symmetrically arranged on the side walls of the vertical plate. The two guide seats are slidably arranged on the two guide rods respectively. The two ends of the spring are fixedly connected to the vertical plate and the guide seats respectively. The pushing assembly is fixedly connected to the top of the smelting chamber and is drivenly connected to one of the guide seats.

[0009] Preferably, the pushing assembly includes a downward electric push rod and a driven block. The output end of the downward electric push rod is equipped with an abutment block. The bottom of the abutment block is provided with a first wedge surface. The driven block is provided with a second wedge surface that cooperates with the first wedge surface. The downward electric push rod is vertically arranged at the top of the melting chamber. The driven block is arranged on the side wall of one of the guide seats. The first wedge surface abuts against the second wedge surface.

[0010] Preferably, the drive mechanism includes a side plate, a motor, a side rotating seat, a pinion, a large gear, and two sprockets. A synchronous shaft is rotatably mounted on the side rotating seat. One first rotating shaft and one second rotating shaft both penetrate the outer wall of the smelting chamber. The side plate and the side rotating seat are both disposed on the outer wall of the smelting chamber, with the side plate located beside the second rotating shaft. The side rotating seat is located between the first and second rotating shafts. The motor is disposed on the side wall of the side plate, and the output end of the motor is connected to the second rotating shaft via a coupling. The pinion is disposed on the second rotating shaft, and the large gear is disposed on the synchronous shaft. The large gear meshes with the pinion. The two sprockets are respectively disposed on the synchronous shaft and the first rotating shaft, and the two sprockets are connected by a chain drive.

[0011] Preferably, the transmission ratio between the large gear and the small gear is 1:1.3 to 1:1.8.

[0012] Preferably, the cross-section of the transition chamber is fan-shaped.

[0013] Preferably, a discharge hopper is provided at the top of the other end of the smelting furnace.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] Firstly, this utility model adopts a three-stage buffer. First, the metal raw material is introduced into the transition chamber through the buffer frame. Then, the metal raw material is introduced into the smelting furnace through the transition chamber. Then, the tilted state of the smelting furnace is used to buffer the metal raw material, thereby reducing the falling speed of the metal raw material and avoiding wear or damage inside the smelting furnace.

[0016] Secondly, this utility model can drive the buffer frame to move towards the center of the transition chamber by the cooperation between the downward electric push rod, the abutment block, the driven block, the first wedge surface and the second wedge surface, so as to ensure that the metal raw materials can stably enter the transition chamber. Attached Figure Description

[0017] Figure 1 This is a side view of the vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to this utility model.

[0019] Figure 3 This is a partial structural diagram of the vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to this utility model. Figure 1 ;

[0020] Figure 4 This is a partial structural diagram of the vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to this utility model. Figure 2 .

[0021] In the picture:

[0022] 1. Operating platform; 11. Vacuum pump; 2. Melting chamber; 21. Feed hopper; 22. Sealing cover; 23. First rotating seat; 231. First rotating shaft; 24. Second rotating seat; 241. Second rotating shaft; 3. Melting furnace; 31. Discharge hopper; 4. Transition chamber; 5. Buffer frame; 51. Guide seat; 6. Horizontal movement mechanism; 61. Vertical plate; 62. Guide rod; 621. Spring; 63. Pushing assembly; 631. Downward electric push rod; 632. Driven block; 633. Abutment block; 634. First wedge surface; 635. Second wedge surface; 7. Drive mechanism; 71. Side plate; 72. Motor; 73. Side rotating seat; 731. Synchronous shaft; 74. Pinion; 75. Large gear; 76. Sprocket. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 The present invention will describe the above technical solution in detail through the following embodiments:

[0025] A vacuum melting device for nickel-chromium electrothermal alloy raw materials includes an operating platform 1, a melting chamber 2, and a melting furnace 3. A vacuum pump 11 is installed on the top of the operating platform 1. A sealing door is installed on the side wall of the melting chamber 2. A feed hopper 21 is connected to the top of the melting chamber 2, and a sealing cover 22 is installed on the top of the feed hopper 21. Two symmetrically arranged first rotating seats 23 are provided inside the melting chamber 2, each with a first rotating shaft 231 rotatably mounted. Two symmetrically arranged second rotating seats 24 are provided on the inner top wall of the melting chamber 2, each with a second rotating shaft 241 rotatably mounted. A transition chamber 4 is provided between the two second rotating shafts 241. A buffer frame 5 is provided on the side. A transverse mechanism 6 for driving the buffer frame 5 to move laterally is provided on the inner top wall of the smelting chamber 2. The feed hopper 21 is located directly above the buffer frame 5. The smelting chamber 2 is set on the top of the operating table 1. The vacuum pump 11 is connected to the smelting chamber 2 through a pipe. The two ends of the smelting furnace 3 are fixedly connected to two first rotating shafts 231 respectively. The transition chamber 4 is located between the buffer frame 5 and the smelting furnace 3. The discharge end of the buffer frame 5 is located directly above one edge of the transition chamber 4. One edge of the smelting furnace 3 is located directly below the other edge of the transition chamber 4. A drive mechanism 7 for driving the first rotating shaft 231 and the second rotating shaft 241 to rotate in opposite directions is provided on the outer wall of the smelting chamber 2.

[0026] This utility model also includes a metering valve, a cooling box, a discharge pipe, and a cooling water circulation pump, which are existing technologies and will not be described in detail here.

[0027] This utility model adopts a three-stage buffer. First, the metal raw material is introduced into the transition chamber 4 through the buffer frame 5. Then, the metal raw material is introduced into the smelting furnace 3 through the transition chamber 4. The tilted state of the smelting furnace 3 is used to buffer the metal raw material, thereby reducing the falling speed of the metal raw material and avoiding wear or damage inside the smelting furnace 3.

[0028] The transverse movement mechanism 6 includes a vertical plate 61, two guide rods 62, and a pushing assembly 63. A spring 621 is sleeved on the guide rod 62. Guide seats 51 are provided on both sides of the buffer frame 5. The vertical plate 61 is installed on the inner top wall of the smelting chamber 2. The two guide rods 62 are symmetrically arranged on the side wall of the vertical plate 61. The two guide seats 51 are slidably arranged on the two guide rods 62 respectively. The two ends of the spring 621 are fixedly connected to the vertical plate 61 and the guide seats 51 respectively. The pushing assembly 63 is fixedly connected to the top of the smelting chamber 2 and is drivenly connected to one of the guide seats 51.

[0029] The guide seat 51 can be moved by the push component 63, and the discharge end of the buffer frame 5 can move closer to the middle of the transition chamber 4 to ensure that the metal raw material can enter the transition chamber 4 stably.

[0030] The pushing assembly 63 includes a downward electric push rod 631 and a driven block 632. The output end of the downward electric push rod 631 is equipped with an abutment block 633. The bottom of the abutment block 633 is provided with a first wedge surface 634. The driven block 632 is provided with a second wedge surface 635 that cooperates with the first wedge surface 634. The downward electric push rod 631 is vertically arranged at the top of the melting chamber 2. The driven block 632 is arranged on the side wall of one of the guide seats 51. The first wedge surface 634 abuts against the second wedge surface 635.

[0031] The downward electric push rod 631 drives the abutment block 633 to move downward. The driven block 632 can be driven to translate through the wedge surface cooperation of the first wedge surface 634 and the second wedge surface 635. The driven block 632 can drive the corresponding guide seat 51 to translate.

[0032] The drive mechanism 7 includes a side plate 71, a motor 72, a side rotating seat 73, a pinion 74, a gear 75, and two sprockets 76. A synchronous shaft 731 is rotatably mounted on the side rotating seat 73. One first rotating shaft 231 and one second rotating shaft 241 both penetrate the outer wall of the smelting chamber 2. The side plate 71 and the side rotating seat 73 are both located on the outer wall of the smelting chamber 2, with the side plate 71 located beside the second rotating shaft 241 and the side rotating seat 73 located between the first rotating shaft 231 and the second rotating shaft 241. The motor 72 is mounted on the side wall of the side plate 71, and the output end of the motor 72 is connected to the second rotating shaft 241 via a coupling. The pinion 74 is mounted on the second rotating shaft 241, and the gear 75 is mounted on the synchronous shaft 731. The gear 75 meshes with the pinion 74. The two sprockets 76 are respectively mounted on the synchronous shaft 731 and the first rotating shaft 231, and the two sprockets 76 are connected by a chain drive.

[0033] The second rotating shaft 241 is driven by the motor 72 to rotate. The second rotating shaft 241 drives the small gear 74 to rotate, which in turn drives the large gear 75 to rotate in reverse. The large gear 75 drives the synchronous shaft 731 and a sprocket 76 to rotate synchronously. This sprocket 76 drives another sprocket 76 to rotate synchronously via a chain. The other sprocket 76 drives the first rotating shaft 231 to rotate in reverse synchronously. Figure 1 As shown, when the first rotating shaft 231 rotates and drives the transition chamber 4 to rotate clockwise, the rotation of the second rotating shaft 241 drives the smelting furnace 3 to rotate counterclockwise. The metal raw materials in the transition chamber 4 can be gradually poured out, and then the metal raw materials can gradually enter the smelting furnace 3 in an inclined state.

[0034] The transmission ratio between the large gear 75 and the small gear 74 is 1:1.3 to 1:1.8; this allows the rotation angle of the smelting furnace 3 to be smaller than that of the transition chamber 4, ensuring that the transition chamber 4 can release the metal raw materials while the smelting furnace 3 does not overflow due to excessive tilt angle.

[0035] The transition chamber 4 has a fan-shaped cross-section, which allows the metal raw materials to move more smoothly within the transition chamber 4.

[0036] A hopper 31 is provided at the top of the other end of the smelting furnace 3. The hopper 31 can improve the convenience of discharging metal materials in the smelting furnace 3.

[0037] Working principle: The nickel-chromium electrothermal alloy raw material in the feed hopper 21 is quantitatively discharged through the metering valve. At the same time, the transverse mechanism 6 operates, and the downward electric push rod 631 drives the abutment block 633 to move downward. The first wedge surface 634 on the abutment block 633 abuts against the second wedge surface 635 of the driven block 632. Then, through the wedge surface cooperation of the first wedge surface 634 and the second wedge surface 635, the driven block 632 can be driven to translate. The driven block 632 can drive the corresponding guide seat 51 to translate. The guide seat 51 drives the buffer frame 5 to translate synchronously. The two springs 621 are stretched, and the discharge end of the buffer frame 5 moves towards the middle of the transition chamber 4. Then, the metal raw material is introduced into the transition chamber 4 through the buffer frame 5. Afterward, the downward electric push rod 631 drives the abutment block 633 to reset. The elastic force of the spring 621 can drive the buffer frame 5 to reset. This prevents the transition chamber 4 from hitting the buffer frame 5 when rotating. Figure 1 Then, motor 72 drives the corresponding second rotating shaft 241 to rotate clockwise. The second rotating shaft 241 drives the transition chamber 4 to rotate. The second rotating shaft 241, through the cooperation of small gear 74 and large gear 75, drives synchronous shaft 731 to rotate counterclockwise. Synchronous shaft 731, through two sprockets 76 and a chain, drives the first rotating shaft 231 and the smelting furnace 3 to rotate counterclockwise. The smelting furnace 3 becomes tilted, and the metal raw material in the transition chamber 4 can fall into the tilted smelting furnace 3. The metal raw material slides along the side wall of the smelting furnace 3 to its inner bottom wall. This method greatly reduces the metal... The falling speed of the raw materials is then controlled by the motor 72, which drives the second rotating shaft 241 to reset, and the first rotating shaft 231 also resets accordingly. Of course, the initial state of the smelting furnace 3 and the transition chamber 4 is vertical, so that the smelting furnace 3 can smelt the metal raw materials, and the transition chamber 4 can receive the metal raw materials. Then the vacuum pump 11 works to draw the smelting chamber 2 into a vacuum state, and then the smelting furnace 3 performs the smelting operation. After the smelting is completed, the motor 72 drives the second rotating shaft 241 to rotate counterclockwise, and then the smelting furnace 3 rotates clockwise. After that, the smelted metal material can be poured out and enter the cooling box.

Claims

1. A vacuum melting equipment for nickel-chromium electrothermal alloy raw materials, characterized in that: The system includes an operating platform (1), a smelting chamber (2), and a smelting furnace (3). The operating platform (1) has a vacuum pump (11) on its top. The smelting chamber (2) has a sealing door on its side wall. The top of the smelting chamber (2) is connected to a feed hopper (21), which has a sealing cover (22) on its top. The smelting chamber (2) contains two symmetrically arranged first rotating seats (23), each with a first rotating shaft (231) rotatably mounted on it. The inner top wall of the smelting chamber (2) has two symmetrically arranged second rotating seats (24), each with a second rotating shaft (241) rotatably mounted on it. A transition chamber (4) is located between the two second rotating shafts (241). A buffer frame (5) is located beside the two second rotating seats (24). The inner top wall of the smelting chamber (2) is provided with a transverse movement mechanism (6) for driving the buffer frame (5) to move laterally. The feed hopper (21) is located directly above the buffer frame (5). The smelting chamber (2) is set on the top of the operating table (1). The vacuum pump (11) is connected to the smelting chamber (2) through a pipe. The two ends of the smelting furnace (3) are respectively fixedly connected to two first rotating shafts (231). The transition chamber (4) is located between the buffer frame (5) and the smelting furnace (3). The discharge end of the buffer frame (5) is located directly above one edge of the transition chamber (4). One edge of the smelting furnace (3) is located directly below the other edge of the transition chamber (4). The outer wall of the smelting chamber (2) is provided with a drive mechanism (7) for driving the first rotating shaft (231) and the second rotating shaft (241) to rotate in opposite directions.

2. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 1, characterized in that: The transverse mechanism (6) includes a vertical plate (61), two guide rods (62) and a pushing assembly (63). A spring (621) is sleeved on the guide rod (62). Guide seats (51) are provided on both sides of the buffer frame (5). The vertical plate (61) is installed on the inner top wall of the smelting chamber (2). The two guide rods (62) are symmetrically arranged on the side wall of the vertical plate (61). The two guide seats (51) are slidably arranged on the two guide rods (62). The two ends of the spring (621) are fixedly connected to the vertical plate (61) and the guide seat (51) respectively. The pushing assembly (63) is fixedly connected to the top of the smelting chamber (2) and is drivenly connected to one of the guide seats (51).

3. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 2, characterized in that: The pushing assembly (63) includes a downward electric push rod (631) and a driven block (632). The output end of the downward electric push rod (631) is equipped with an abutment block (633). The bottom of the abutment block (633) is provided with a first wedge surface (634). The driven block (632) is provided with a second wedge surface (635) that cooperates with the first wedge surface (634). The downward electric push rod (631) is vertically arranged at the top of the melting chamber (2). The driven block (632) is arranged on the side wall of one of the guide seats (51). The first wedge surface (634) abuts against the second wedge surface (635).

4. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 1, characterized in that: The drive mechanism (7) includes a side plate (71), a motor (72), a side rotating seat (73), a pinion (74), a large gear (75), and two sprockets (76). A synchronous shaft (731) is rotatably mounted on the side rotating seat (73). One first rotating shaft (231) and one second rotating shaft (241) both penetrate the outer wall of the smelting chamber (2). The side plate (71) and the side rotating seat (73) are both located on the outer wall of the smelting chamber (2), and the side plate (71) is located beside the second rotating shaft (241). The side rotating seat (73) is located beside the first rotating shaft (241). Between a first rotating shaft (231) and a second rotating shaft (241), the motor (72) is mounted on the side wall of the side plate (71). The output end of the motor (72) is connected to the second rotating shaft (241) via a coupling. The pinion (74) is mounted on the second rotating shaft (241), and the large gear (75) is mounted on the synchronous shaft (731). The large gear (75) meshes with the pinion (74). Two sprockets (76) are mounted on the synchronous shaft (731) and the first rotating shaft (231) respectively, and the two sprockets (76) are connected by a chain drive.

5. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 4, characterized in that: The transmission ratio between the large gear (75) and the small gear (74) is 1:1.3 to 1:1.

8.

6. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 1, characterized in that: The cross-section of the transition chamber (4) is fan-shaped.

7. The vacuum melting equipment for nickel-chromium electrothermal alloy raw materials according to claim 1, characterized in that: The other end of the smelting furnace (3) is equipped with a top discharge hopper (31).

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