A high-purity aluminum-nickel vacuum electric heating refining furnace

Abstract

The present invention relates to the technical field of high-purity aluminum-nickel processing, and discloses a high-purity aluminum-nickel vacuum electric heating refining furnace, comprising a vacuum electric heating refining furnace main body and a fixed seat, and also comprising a feeding mechanism, the feeding mechanism comprising a silo arranged on the vacuum electric heating refining furnace main body, a movable silo door and a second valve assembly being arranged in the silo, and a first valve assembly being arranged on the movable silo door; an inner cavity of the silo is divided into a first chamber and a second chamber by the first valve assembly and the second valve assembly; an air pressure balancing mechanism is arranged on the fixed seat, and the air pressure balancing mechanism comprises an exhaust assembly connected to the second chamber; when the high-purity aluminum-nickel vacuum electric heating refining furnace is loaded during the refining process, an independent closed space is first formed in the silo and air is exhausted to achieve air pressure balance with the furnace body before the material is opened to discharge, thereby maintaining air pressure balance in the furnace body, and the exhaust rate can be adaptively adjusted to gradually slow down according to the air pressure difference on both sides.

Description

Technical Field

[0001] The invention relates to the technical field of high-purity aluminum-nickel processing, in particular to a high-purity aluminum-nickel vacuum electric heating refining furnace. Background Art

[0002] High-purity aluminum nickel refers to a high-purity aluminum-nickel alloy, also known as Raney alloy. It has highly active catalytic properties. Dry aluminum-nickel alloy can spontaneously combust in air and should be stored in anhydrous ethanol. It is a catalyst for reduction or hydrogenation reactions and is commonly used in organic synthesis.

[0003] The processing of high-purity aluminum-nickel includes a refining step, which requires the use of a refining furnace to remove impurities from the crude metal. Refining furnaces come in a variety of types, depending on their construction principles. One such type is a vacuum electric heating refining furnace, which utilizes induction heating within a near-vacuum environment within a vacuum chamber.

[0004] In the existing high-purity aluminum-nickel vacuum electric heating refining furnace, when additional materials such as catalysts need to be added during the refining process, a silo is generally set up outside the furnace body. However, during the process of adding materials through the silo, part of the vacuum chamber structure will come into contact with the outside air, destroying the air pressure balance inside the furnace and affecting the overall refining effect. Summary of the Invention

[0005] The present invention provides a high-purity aluminum-nickel vacuum electric heating refining furnace, which has the beneficial effect of first forming an independent closed space in the hopper and exhausting air to achieve pressure balance with the furnace body before opening the furnace to release the material during the refining process, thereby maintaining the pressure balance in the furnace body, and the exhaust rate can be adaptively adjusted to gradually slow down according to the pressure difference on both sides. It solves the problem mentioned in the above background technology that in the existing high-purity aluminum-nickel vacuum electric heating refining furnace, when additional materials such as catalysts need to be added during the refining process, a hopper is generally set outside the furnace body, but in the process of adding materials through the hopper, part of the vacuum chamber structure will come into contact with the outside air, destroying the pressure balance in the furnace body and affecting the overall refining effect.

[0006] The present invention provides the following technical solution: a high-purity aluminum-nickel vacuum electric heating refining furnace, comprising a vacuum electric heating refining furnace body and a fixed base, and also comprising a feeding mechanism, wherein the feeding mechanism comprises a silo provided on the vacuum electric heating refining furnace body, a movable silo door and a second valve assembly being provided in the silo, and a first valve assembly being provided on the movable silo door;

[0007] The inner cavity of the silo is divided into a first chamber and a second chamber by the first valve assembly and the second valve assembly, wherein the first chamber is communicated with the inner cavity of the vacuum electric heating refining furnace body, and the second chamber is used for storing materials;

[0008] The fixed seat is provided with an air pressure balancing mechanism, which includes an air pumping assembly connected to the second chamber. When the first valve assembly and the second valve assembly are both in a closed state, the air pumping assembly is operated to balance the air pressure in the first chamber and the second chamber, and then the first valve assembly is opened to discharge the material.

[0009] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace of the present invention, wherein: the feeding mechanism further includes two first chutes symmetrically opened on the silo, and the movable silo door is slidably connected to the two first chutes;

[0010] The air pressure balancing mechanism further includes an air extraction pipe provided on the silo, the inner cavity of the air extraction pipe is communicated with the second chamber, and a third valve assembly is provided on the air extraction pipe.

[0011] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the first valve assembly includes a first valve core rotatably mounted on the movable chamber door, the first valve core and the movable chamber door are coaxially arranged, a limit block and a first connecting block are respectively provided at both ends of the first valve core, and a limit groove adapted to the limit block is formed on the fixed seat;

[0012] The air pressure balancing mechanism further includes a first motor, and an output shaft of the first motor is connected to the first connecting block.

[0013] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the first valve assembly further includes a second connecting block coaxially arranged on the output shaft of the first motor, and the first connecting block is provided with a connecting groove adapted to the second connecting block;

[0014] A first hydraulic cylinder is provided on the fixing seat, a first slide is provided on the output shaft of the first hydraulic cylinder, and the first motor is connected to the first slide.

[0015] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the second valve assembly includes a second chute provided on the hopper, a second hydraulic cylinder is provided on the fixed seat, a second valve core is provided on the output shaft of the second hydraulic cylinder, and the second valve core is slidably connected to the second chute;

[0016] The structure of the third valve assembly is the same as that of the second valve assembly.

[0017] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the feeding mechanism also includes a sealing assembly, which includes two sealing grooves symmetrically opened on the silo, and the two sealing grooves are respectively connected to the two first slide grooves, and two sealing blocks are symmetrically arranged on the movable silo door, and the two sealing blocks are respectively slidably connected to the two sealing grooves.

[0018] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the exhaust assembly includes a fixed plug and a piston arranged in the exhaust pipe, and both the fixed plug and the piston are provided with a one-way valve, and the two one-way valves are used to limit the one-way flow of air from the second chamber to the outside of the exhaust pipe.

[0019] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the exhaust assembly further includes a connecting plate, the connecting plate is connected to the piston via a connecting piece, a rotating shaft is rotatably provided on the fixed seat, and a first reciprocating motion assembly is provided on the rotating shaft;

[0020] The first reciprocating motion assembly includes a first rotating disk coaxially arranged on the rotating shaft, and a first connecting shaft is arranged on the first rotating disk at a position offset from the center of the circle;

[0021] The first reciprocating motion component further includes a first connecting rod, one end of which is rotatably disposed on the first connecting shaft, and the other end of the first connecting rod is movably hinged to the connecting plate via a shaft hinge.

[0022] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the air pressure balancing mechanism further includes an adjustment component for adjusting the exhaust speed of the exhaust assembly, the adjustment component including a third slide groove provided on the fixed seat, a second slide seat slidably disposed in the third slide groove, a rack slidably disposed on the second slide seat, and the rack elastically connected to the second slide seat via a spring;

[0023] The rotating shaft is provided with a gear, the gear is engaged with the rack, and the movable door is provided with a baffle.

[0024] As an optional solution of the high-purity aluminum-nickel vacuum electric heating refining furnace described in the present invention, the adjusting component also includes a second motor arranged on the fixed seat, and a second reciprocating motion component is arranged on the output shaft of the second motor. The second reciprocating motion component is connected to the second slide seat to drive it to slide back and forth along the third slide groove, and the structure of the second reciprocating motion component is the same as that of the first reciprocating motion component.

[0025] The present invention has the following beneficial effects:

[0026] 1. During the refining process, when the main body of the vacuum electric heating refining furnace is in a vacuum or negative pressure environment, material is added through the hopper. The material is first placed in the second chamber, a closed space between the second valve assembly and the first valve assembly. Air is then extracted from the second chamber using the exhaust assembly until the internal pressure reaches a near equilibrium with the pressure inside the main body of the vacuum electric heating refining furnace. The first valve assembly is then opened to allow the material to enter the main body of the vacuum electric heating refining furnace. This ensures that the pressure balance inside the main body of the vacuum electric heating refining furnace is not disrupted, without affecting the refining effect.

[0027] 2. In this high-purity aluminum-nickel vacuum electric heating refining furnace, the first valve assembly and the movable door containing it are movable within the silo. As the second valve assembly opens to add material, a pressure differential develops across the first valve assembly, causing the movable door to move in response to this pressure differential. As the pressures gradually equalize, the movable door gradually moves back until it reaches its initial position, automatically stopping the operation of the exhaust assembly. This automatically stops exhaust when the pressures equalize, based on the pressure differential between the interior and exterior of the vacuum electric heating refining furnace.

[0028] 3. In this high-purity aluminum-nickel vacuum electric heating refining furnace, the movable door not only automatically stops the exhaust, but also automatically adjusts the exhaust rate during the gradual return movement and the specific distance moved according to the pressure difference. When the pressure difference is large and the movable door moves a long distance, the number of meshing teeth between the rack and the gear is automatically adjusted, thereby adjusting the rotation rate of the first turntable that drives the exhaust assembly within a fixed travel distance. Initially, the exhaust rate is relatively high. As the pressure gradually balances and the movable door gradually moves back, the number of meshing teeth is reduced, reducing the rotation rate and exhaust rate. The gradually slowing exhaust rate is beneficial to production safety on the one hand, and avoids excessive exhaust at the end, which may cause powdered materials to be sucked out on the other. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the three-dimensional structure of the feeding mechanism of the present invention.

[0031] Figure 3 This is a first cross-sectional structural schematic diagram of the feeding mechanism of the present invention.

[0032] Figure 4 This is a second cross-sectional structural schematic diagram of the feeding mechanism of the present invention.

[0033] Figure 5 It is a schematic diagram of the explosion structure of the feeding mechanism of the present invention.

[0034] Figure 6 This is a schematic diagram of the explosion structure of the first valve assembly of the present invention.

[0035] Figure 7 For the present invention Figure 6 Schematic diagram of the locally enlarged structure at point A in the middle.

[0036] Figure 8 This is a schematic diagram of the exploded structure of the regulating assembly of the present invention.

[0037] Figure 9 Schematic diagram of the explosion structure of the air extraction component of the present invention.

[0038] In the figure: 100, vacuum electric heating refining furnace body; 200, fixed seat; 300, feeding mechanism; 310, silo; 320, first chute; 330, movable door; 340, first valve assembly; 341, first valve core; 342, limit block; 343, first connecting block; 344, limit groove; 345, first motor; 346, second connecting block; 347, connecting groove; 348, first hydraulic cylinder; 349, first slide; 350, second valve assembly; 351, second chute; 352, second hydraulic cylinder; 353, second valve core; 360, first chamber; 370, second chamber; 380, sealing assembly; 381, sealing groove; 382, ​​sealing block; 400, air pressure balancing mechanism; 410, pumping Air pipe; 420, third valve assembly; 421, fourth slide; 422, third hydraulic cylinder; 423, third valve core; 430, vacuum assembly; 431, fixing plug; 432, piston; 433, one-way valve; 434, connecting plate; 435, connecting piece; 436, rotating shaft; 437, first reciprocating motion assembly; 4371, first turntable; 4372, first connecting shaft; 4373, first connecting rod; 440, adjusting assembly; 441, third slide; 442, second slide; 443, rack; 444, spring; 445, gear; 446, baffle; 447, second motor; 448, second reciprocating motion assembly; 4481, second turntable; 4482, second connecting shaft; 4483, second connecting rod. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] Example 1

[0041] The vacuum electric heating refining furnace body 100 is used to refine aluminum-nickel alloy and remove impurities from crude metal. It should be noted that during its operation, the internal pressure changes multiple times. The principle of this is not described in detail here. The problem to be solved is that when the internal environment is in a near-vacuum or low-pressure environment, the process of adding materials midway usually slightly disrupts the internal pressure balance, affecting the environment required for each refining process. For this purpose, Example 1 is proposed.

[0042] See also Figures 1-9 A high-purity aluminum-nickel vacuum electric heating refining furnace includes a vacuum electric heating refining furnace body 100 and a fixing base 200, and also includes a feeding mechanism 300. The feeding mechanism 300 includes a silo 310 provided on the vacuum electric heating refining furnace body 100, a movable silo door 330 and a second valve assembly 350 are provided in the silo 310, and a first valve assembly 340 is provided on the movable silo door 330.

[0043] The inner cavity of the silo 310 is divided into a first chamber 360 and a second chamber 370 by the first valve assembly 340 and the second valve assembly 350, wherein the first chamber 360 is connected to the inner cavity of the vacuum electric heating refining furnace body 100, and the second chamber 370 is used to store materials;

[0044] The fixing seat 200 is provided with an air pressure balancing mechanism 400, which includes an air pumping assembly 430 connected to the second chamber 370. When the first valve assembly 340 and the second valve assembly 350 are both in a closed state, the air pressure in the first chamber 360 and the second chamber 370 is balanced by the operation of the air pumping assembly 430, and then the first valve assembly 340 is opened to discharge the material.

[0045] The air pressure balancing mechanism 400 further includes an air extraction pipe 410 disposed on the silo 310 . The inner cavity of the air extraction pipe 410 is in communication with the second chamber 370 . A third valve assembly 420 is disposed on the air extraction pipe 410 .

[0046] In this embodiment, the positions of the vacuum electric heating refining furnace body 100 and the fixing base 200 are fixed, the silo 310 is fixed on the fixing base 200 , and its lower end is connected to the inner cavity of the vacuum electric heating refining furnace body 100 .

[0047] During material loading, the second valve assembly 350 mounted on the upper portion of the silo 310 is first opened, while the first valve assembly 340 in the middle of the silo 310 is closed. The material then enters the second chamber 370 between the second valve assembly 350 and the first valve assembly 340. The second valve assembly 350 is then closed. At this point, the pressure in the first chamber 360 is the same as that in the vacuum electric heating refining furnace body 100, and there is a pressure difference on both sides of the movable silo door 330.

[0048] At this point, the normally closed third valve assembly 420 is opened, and the exhaust assembly 430 is activated, exhausting air from the second chamber 370 through the exhaust pipe 410 until the air pressure on both sides of the movable chamber door 330 is balanced. The third valve assembly 420 is then closed again, and the first valve assembly 340 is opened again, allowing the material to pass through the first chamber 360 and fall into the vacuum electric heating refining furnace body 100. At this point, the air pressure in the vacuum electric heating refining furnace body 100 is not affected.

[0049] 300 is tilted as a whole to facilitate the falling of materials from 310.

[0050] Example 2

[0051] In order to realize the control of opening and closing of the upper part of the silo 310 and the middle part of the exhaust pipe 410, embodiment 2 is proposed;

[0052] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 2-Figure 9 The second valve assembly 350 includes a second chute 351 provided on the hopper 310, a second hydraulic cylinder 352 is provided on the fixed seat 200, a second valve core 353 is provided on the output shaft of the second hydraulic cylinder 352, and the second valve core 353 is slidably connected to the second chute 351;

[0053] The structure of the third valve assembly 420 is the same as that of the second valve assembly 350;

[0054] Specifically, the third valve assembly 420 includes a fourth slide groove 421 opened on the exhaust pipe 410, a third hydraulic cylinder 422 is provided on the fixed seat 200, a third valve core 423 is provided on the output shaft of the third hydraulic cylinder 422, and the third valve core 423 is slidably connected in the fourth slide groove 421.

[0055] In this embodiment, the second hydraulic cylinder 352 and the third hydraulic cylinder 422 fixed on the fixing seat 200 are operated to drive the second valve core 353 and the third valve core 423 to slide in the second sliding groove 351 and the fourth sliding groove 421 to control opening and closing.

[0056] It should be supplemented that the second valve assembly 350 and the third valve assembly 420 can be replaced by other electrically controlled or manual valves.

[0057] Example 3

[0058] In order to extract gas from the second chamber 370 so as to balance the air pressure on both sides of the movable door 330, embodiment 3 is proposed;

[0059] This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 2-Figure 9The air extraction assembly 430 includes a fixed plug 431 and a piston 432 disposed in the air extraction pipe 410. The fixed plug 431 and the piston 432 are both provided with a one-way valve 433. The two one-way valves 433 are used to limit the one-way flow of air from the second chamber 370 to the outside of the air extraction pipe 410.

[0060] The air extraction assembly 430 further includes a connecting plate 434, which is connected to the piston 432 via a connecting piece 435. A rotating shaft 436 is rotatably provided on the fixing seat 200, and a first reciprocating motion assembly 437 is provided on the rotating shaft 436.

[0061] The first reciprocating motion assembly 437 includes a first rotary disk 4371 coaxially arranged on the rotating shaft 436 , and a first connecting shaft 4372 is arranged on the first rotary disk 4371 at a position offset from the center.

[0062] The first reciprocating motion assembly 437 further includes a first connecting rod 4373 , one end of which is rotatably disposed on the first connecting shaft 4372 , and the other end of the first connecting rod 4373 is movably hinged to the connecting plate 434 via a hinge.

[0063] In this embodiment: the first turntable 4371 fixed thereon is driven to rotate by the rotation of the rotating shaft 436, thereby driving the first connecting shaft 4372 fixed on the first turntable 4371 to make a circular motion, and the connecting plate 434 and the connecting member 435 are driven by the transmission of the first connecting rod 4373 to make reciprocating motion up and down under the limiting action of the piston 432 sliding along the exhaust pipe 410, thereby driving the piston 432 fixed to the connecting member 435 to slide back and forth in the exhaust pipe 410.

[0064] When the piston 432 and the one-way valve 433 on the upper side move to the left, the one-way valve 433 on the upper side is closed, and the one-way valve 433 on the fixed plug 431 at the fixed position on the lower side is opened, forming a vacuum environment between the piston 432 and the fixed plug 431, and the gas in the second chamber 370 connected to the exhaust pipe 410 is drawn into between the fixed plug 431 and the piston 432 under the pressure difference.

[0065] When the upper piston 432 and the one-way valve 433 move to the right, the upper one-way valve 433 opens and the lower one-way valve 433 closes, allowing gas to be discharged from the upper end of the gas extraction pipe 410. This reciprocating process continuously extracts gas from the second chamber 370 until the pressure in the second chamber 370 reaches equilibrium with that in the vacuum electric heating refining furnace body 100. At this point, the extraction stops and the third valve assembly 420 is closed.

[0066] Example 4

[0067] Furthermore, to achieve the goal of automatically stopping the vacuuming of the vacuum assembly 430 when the air pressure on both sides is balanced, and to achieve the additional effect that the vacuuming rate gradually decreases as the air pressure in the second chamber 370 gradually decreases, on the one hand, it is avoided that part of the powdered material is extracted by the higher air pressure due to the fast vacuuming rate, and on the other hand, it ensures safe production, embodiment 4 is proposed;

[0068] This embodiment is an improvement made on the basis of embodiment 3. For details, please refer to Figure 2-Figure 9 The loading mechanism 300 further includes two first chutes 320 symmetrically opened on the hopper 310 , and the movable hopper door 330 is slidably connected to the two first chutes 320 ;

[0069] The air pressure balancing mechanism 400 further includes an adjustment assembly 440 for adjusting the air extraction speed of the air extraction assembly 430. The adjustment assembly 440 includes a third slide groove 441 formed on the fixed base 200. A second slide seat 442 is slidably disposed within the third slide groove 441. A rack 443 is slidably disposed on the second slide seat 442. The rack 443 is elastically connected to the second slide seat 442 via a spring 444.

[0070] A gear 445 is provided on the rotating shaft 436 , the gear 445 is meshed with the rack 443 , and a baffle 446 is provided on the movable door 330 ;

[0071] The adjustment assembly 440 further includes a second motor 447 disposed on the fixed base 200. A second reciprocating motion assembly 448 is disposed on the output shaft of the second motor 447. The second reciprocating motion assembly 448 is connected to the second slide 442 to drive it to slide back and forth along the third slide groove 441. The structure of the second reciprocating motion assembly 448 is the same as that of the first reciprocating motion assembly 437.

[0072] Specifically, the second reciprocating motion assembly 448 includes a second rotary disk 4481 coaxially arranged on the output shaft of the second motor 447, and a second connecting shaft 4482 is arranged on the second rotary disk 4481 at a position deviated from the center.

[0073] The second reciprocating motion assembly 448 further includes a second connecting rod 4483 , one end of which is rotatably mounted on the second connecting shaft 4482 , and the other end of which is movably hinged to the second slide 442 via a hinge.

[0074] The feeding mechanism 300 also includes a sealing assembly 380, which includes two sealing grooves 381 symmetrically opened on the hopper 310. The two sealing grooves 381 are respectively connected to the two first slide grooves 320. Two sealing blocks 382 are symmetrically arranged on the movable hopper door 330, and the two sealing blocks 382 are respectively slidably connected in the two sealing grooves 381.

[0075] In this embodiment: the movable bin door 330 is not fixed in the middle of the silo 310, but can slide left and right on the silo 310. At the same time, the two sealing blocks 382 fixed on the movable bin door 330 slide left and right along the two longer sealing grooves 381. During the sliding process, the sealing blocks 382 are always kept in the sealing grooves 381, thereby maintaining the air tightness in the silo 310.

[0076] As a result, when the second valve assembly 350 is opened to put in the material and contact the outside air, the movable bin door 330 will automatically slide to the right for a distance according to the pressure difference between the inside and outside of the vacuum electric heating refining furnace body 100. At this time, the baffle 446 fixed on the rear end of the movable bin door 330 extending out of the silo 310 will move to the right accordingly.

[0077] During air extraction, the second valve assembly 350 and the first valve assembly 340 are closed, and the third valve assembly 420 is opened. The second motor 447 is controlled to operate, driving the second rotary disk 4481 to rotate. The second connecting rod 4483 drives the second slide 442 to slide back and forth along the third slide groove 441. The second slide 442, supported by the elastic force of the spring 444, also drives the rack 443 to reciprocate left and right. The rack 443, in turn, drives the gear 445 to rotate back and forth, which in turn drives the rotating shaft 436 to which the gear 445 is fixed. The first reciprocating assembly 437 does not distinguish between forward and reverse rotations and outputs the piston 432 to reciprocate within the exhaust pipe 410, thereby continuously extracting air.

[0078] As the vacuum is being pumped out, the movable chamber door 330 gradually moves to the left until the air pressure in the second chamber 370 approaches the air pressure in the vacuum electric heating refining furnace body 100, at which point the movable chamber door 330 moves to the far left. As shown in the figure, when the movable chamber door 330 is at the far left, the baffle 446 blocks the rack 443 and compresses the spring 444. At this time, the second connecting rod 4483 moves eccentrically to the far right, but still cannot engage the rack 443 with the gear 445. Therefore, the gear 445 and the rotating shaft 436 stop rotating, and the vacuum is stopped.

[0079] At the same time, since the time it takes for the second slide 442 to drive the rack 443 to move back and forth once, that is, to move left and right once, is fixed, but since the movable warehouse door 330 and the baffle 446 gradually move to the left, the farthest rightward movement distance of the rack 443 gradually decreases, and the number of teeth that can engage with the gear 445 and the rack 443 gradually decreases within the fixed time, so the rotation speed of the gear 445 is gradually decreasing, and accordingly, the air extraction rate is also gradually decreasing.

[0080] Example 5

[0081] In order to control the opening and closing of the movable door 330, embodiment 5 is proposed;

[0082] This embodiment is an improvement made on the basis of embodiment 4. For details, please refer to Figure 2-Figure 7 The first valve assembly 340 includes a first valve core 341 rotatably mounted on the movable door 330. The first valve core 341 is coaxially arranged with the movable door 330. A limit block 342 and a first connecting block 343 are respectively provided at both ends of the first valve core 341. A limit groove 344 adapted to the limit block 342 is formed on the fixed seat 200.

[0083] The air pressure balancing mechanism 400 further includes a first motor 345 , the output shaft of the first motor 345 being connected to the first connecting block 343 ;

[0084] The first valve assembly 340 further includes a second connecting block 346 coaxially disposed on the output shaft of the first motor 345 , and a connecting groove 347 adapted to the second connecting block 346 is formed on the first connecting block 343 ;

[0085] A first hydraulic cylinder 348 is provided on the fixing seat 200 , a first slide 349 is provided on the output shaft of the first hydraulic cylinder 348 , and the first motor 345 is connected to the first slide 349 .

[0086] In this embodiment: when the first valve assembly 340 is in the normally closed state as shown in the figure, the position of the first motor 345 is fixed under the support of the first hydraulic cylinder 348, and the position of the second connecting block 346 fixed on the output shaft of the first motor 345 is also fixed. At this time, the second connecting block 346 is located in the connecting groove 347 which is coaxial with the first connecting block 343, the first valve core 341, and the movable warehouse door 330. The second connecting block 346 is square, and the connecting groove 347 is a rectangle extending to the left of the second connecting block 346. Therefore, the first valve core 341 is in the vertical state as shown in the figure, and the movable warehouse door 330 is closed.

[0087] When the movable door 330 moves to the right, the square limiting block 342 immediately enters the limiting groove 344 and slides to be limited, the first valve core 341 remains vertical, and the movable door 330 remains closed.

[0088] After the air pressure on both sides is balanced, the movable door 330 moves to the left, and the second connecting block 346 slides into the connecting groove 347 again. At this time, the operation of the first motor 345 drives the second connecting block 346 to rotate, which in turn drives the first connecting block 343 and the first valve core 341 to rotate. The first valve core 341 rotates coaxially within the movable door 330 and flips, thereby opening the movable door 330. After the material is discharged, the first motor 345 rotates in the reverse direction until the first valve core 341 is restored to a vertical position.

[0089] The first hydraulic cylinder 348 is used to drive the first slide 349 , the first motor 345 and the second connecting block 346 to move so as to adjust the pressure clamping force of the first connecting block 343 .

[0090] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0091] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A high-purity aluminum-nickel vacuum electric heating refining furnace, comprising a vacuum electric heating refining furnace body and a fixing base, characterized in that: The invention also includes a feeding mechanism, which includes a silo provided on the main body of the vacuum electric heating refining furnace, a movable silo door and a second valve assembly provided in the silo, and a first valve assembly provided on the movable silo door; The inner cavity of the silo is divided into a first chamber and a second chamber by a first valve assembly and a second valve assembly, wherein the first chamber is communicated with the inner cavity of the vacuum electric heating refining furnace body, and the second chamber is used for storing materials; The fixed seat is provided with an air pressure balancing mechanism, which includes an air pumping assembly connected to the second chamber. When the first valve assembly and the second valve assembly are both in a closed state, the air pressure in the first chamber and the second chamber is balanced by the operation of the air pumping assembly, and then the first valve assembly is opened to discharge the material. The feeding mechanism further comprises two first chutes symmetrically arranged on the silo, and the movable silo door is slidably connected to the two first chutes; The air pressure balancing mechanism further includes an air extraction pipe provided on the silo, the inner cavity of the air extraction pipe is communicated with the second chamber, and a third valve assembly is provided on the air extraction pipe; The air extraction assembly includes a fixed plug and a piston arranged in the air extraction pipe, and both the fixed plug and the piston are provided with a one-way valve, and the two one-way valves are used to limit the one-way flow of air from the second chamber to the outside of the air extraction pipe; The air extraction assembly further includes a connecting plate, which is connected to the piston via a connecting piece. A rotating shaft is rotatably provided on the fixed seat, and a first reciprocating motion assembly is provided on the rotating shaft. The first reciprocating motion assembly includes a first rotating disk coaxially arranged on the rotating shaft, and a first connecting shaft is arranged on the first rotating disk at a position offset from the center of the circle; The first reciprocating motion assembly further includes a first connecting rod, one end of which is rotatably disposed on the first connecting shaft, and the other end of which is movably hinged to the connecting plate via a shaft hinge; The air pressure balancing mechanism also includes an adjusting component for adjusting the air extraction speed of the air extraction component, the adjusting component includes a third slide groove provided on the fixed seat, a second slide seat is slidably provided in the third slide groove, a rack is slidably provided on the second slide seat, and the rack is elastically connected to the second slide seat via a spring; A gear is provided on the rotating shaft, the gear is meshed with the rack, and a baffle is provided on the movable warehouse door.

2. The high-purity aluminum-nickel vacuum electric heating refining furnace according to claim 1, characterized in that: The first valve assembly includes a first valve core rotatably mounted on the movable door. The first valve core and the movable door are coaxially arranged. A limit block and a first connecting block are respectively arranged at both ends of the first valve core. A limit groove adapted to the limit block is formed on the fixed seat. The air pressure balancing mechanism further includes a first motor, and an output shaft of the first motor is connected to the first connecting block.

3. The high-purity aluminum-nickel vacuum electric heating refining furnace according to claim 2, characterized in that: The first valve assembly further includes a second connecting block coaxially arranged on the output shaft of the first motor, and the first connecting block is provided with a connecting groove adapted to the second connecting block; A first hydraulic cylinder is arranged on the fixed seat, a first sliding seat is arranged on the output shaft of the first hydraulic cylinder, and the first motor is connected to the first sliding seat.

4. The high-purity aluminum-nickel vacuum electric heating refining furnace according to claim 1, characterized in that: The second valve assembly includes a second chute provided on the silo, a second hydraulic cylinder is provided on the fixed seat, a second valve core is provided on the output shaft of the second hydraulic cylinder, and the second valve core is slidably connected to the second chute; The structure of the third valve assembly is the same as that of the second valve assembly.

5. The high-purity aluminum-nickel vacuum electric heating refining furnace according to claim 1, characterized in that: The feeding mechanism also includes a sealing assembly, which includes two sealing grooves symmetrically opened on the silo, the two sealing grooves are respectively connected to the two first sliding grooves, and two sealing blocks are symmetrically arranged on the movable silo door, and the two sealing blocks are respectively slidably connected to the two sealing grooves.

6. The high-purity aluminum-nickel vacuum electric heating refining furnace according to claim 1, characterized in that: The adjustment component also includes a second motor arranged on a fixed seat, and a second reciprocating motion component is arranged on the output shaft of the second motor. The second reciprocating motion component is connected to the second slide seat to drive it to slide back and forth along the third slide groove. The structure of the second reciprocating motion component is the same as that of the first reciprocating motion component.

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