阅读说明：本技术 一种用于钕铁硼生产的真空熔炼炉 (Vacuum smelting furnace for neodymium iron boron production ) 是由 冯立峰 于 2020-03-31 设计创作，主要内容包括：本发明公开的一种用于钕铁硼生产的真空熔炼炉,包括：炉体,具有一密闭容腔；坩埚,设置于一转轴上,所述转轴设置于所述容腔内,并能够进行旋转,所述转轴一端伸出炉体；翻转离合机构,能够控制所述转轴正转与反转；第一锭模,设置于坩埚下侧,当转轴正转时,盛接熔融合金；第二锭模,设置于坩埚下侧,当转轴反转时,盛接熔融合金；升降机构,与所述第一锭模与第二锭模连接,能够使所述第一锭模与所述第二锭模交替升降。上述技术方案的优点在于：坩埚能够双侧翻转,并设置两组锭模,使得两组锭模能够交替进行接收熔融的合金液体,从而延长了合金冷却的时间,使得坩埚能够持续的进行加热熔融,提高了真空熔炼炉的加工效率。(The invention discloses a vacuum smelting furnace for producing neodymium iron boron, which comprises: the furnace body is provided with a closed cavity; the crucible is arranged on a rotating shaft, the rotating shaft is arranged in the containing cavity and can rotate, and one end of the rotating shaft extends out of the furnace body; the overturning clutch mechanism can control the rotating shaft to rotate forwards and backwards; the first ingot mould is arranged at the lower side of the crucible and is used for containing molten alloy when the rotating shaft rotates forwards; the second ingot mould is arranged at the lower side of the crucible and is used for containing the molten alloy when the rotating shaft rotates reversely; and a lifting mechanism connected with the first ingot mold and the second ingot mold and capable of alternately lifting the first ingot mold and the second ingot mold. The technical scheme has the advantages that: the crucible can two side upset to set up two sets of ingot moulds, make two sets of ingot moulds can receive the molten alloy liquid in turn, thereby prolonged the refrigerated time of alloy, make the crucible can last heat the melting, improved vacuum melting furnace's machining efficiency.)

1. A vacuum melting furnace for neodymium iron boron production, characterized in that, the vacuum melting furnace for neodymium iron boron production includes:

the furnace body is provided with a closed cavity;

the crucible is arranged on a rotating shaft, the rotating shaft is arranged in the containing cavity and can rotate, and one end of the rotating shaft extends out of the furnace body;

the turnover clutch mechanism is connected with one end of the rotating shaft extending out of the furnace body and can control the rotating shaft to rotate forwards and backwards;

the first ingot mould is arranged at the lower side of the crucible and is used for containing molten alloy when the rotating shaft rotates forwards;

the second ingot mould is arranged at the lower side of the crucible and is used for containing the molten alloy when the rotating shaft rotates reversely;

and a lifting mechanism connected with the first ingot mold and the second ingot mold and capable of alternately lifting the first ingot mold and the second ingot mold.

2. The vacuum melting furnace for neodymium iron boron production according to claim 1, characterized in that the overturning clutch mechanism comprises:

a first gear;

a first clutch section;

a second clutch section;

a second gear;

the regulating gear set comprises a gear carrier, a first transmission gear, a second transmission gear coaxially and fixedly connected with the first transmission gear, a third transmission gear meshed with the second transmission gear and a separation lug, wherein the first transmission gear can be meshed with the first gear, and meanwhile, the third transmission gear is meshed with the second gear;

the telescopic cylinder is used for driving the regulating gear set to move along the horizontal direction,

the first gear, the first clutch part, the second clutch part and the second gear are coaxially arranged in sequence, and when the first clutch part is matched with the second clutch part, the first gear and the second gear rotate in the same direction; when the first transmission gear is meshed with the first gear, the third transmission gear is meshed with the second gear, and the separation lug extends into the space between the first clutch part and the second clutch part to separate the first clutch part from the second clutch part, so that the first gear and the second gear rotate reversely.

3. The vacuum melting furnace for neodymium iron boron production according to claim 1, characterized in that the elevating mechanism comprises:

a first ingot mold connection assembly;

a second ingot mold connecting assembly;

the driving gear can drive the first ingot mold connecting assembly and the second ingot mold connecting assembly to alternatively lift and descend;

and the driving motor can drive the driving gear to rotate.

4. The vacuum melting furnace for producing neodymium iron boron according to claim 3, characterized in that a partition plate is arranged in the furnace body, a first blanking hole and a second blanking hole are formed in the partition plate and respectively correspond to the first ingot mold connecting assembly and the second ingot mold connecting assembly, the lifting mechanism further comprises a partition plate assembly, the partition plate assembly comprises a first belt wheel coaxially connected with the driving gear, a second belt wheel connected with the first belt wheel through a belt, a partition plate driving wheel coaxially connected with the second belt wheel, and a partition plate driven by the partition plate driving wheel, the partition plate assembly can slide along a horizontal direction, and when the first ingot mold connecting assembly ascends, the partition plate closes the second blanking hole; when the second ingot mould connecting component is lifted, the baffle plate member closes the first blanking hole.

5. The vacuum melting furnace for neodymium iron boron production according to claim 4, wherein the first ingot mold connecting assembly comprises a sliding block and a turnover motor, the turnover motor is fixed on the sliding block and used for driving the first ingot mold to turn over, and the sliding block can move in a vertical direction under the driving of the driving gear.

6. The vacuum melting furnace for producing neodymium iron boron according to claim 5, characterized in that a water cooling device is arranged outside the ingot mold.

7. The vacuum melting furnace for neodymium iron boron production according to claim 5, characterized in that the first blanking hole can be closed after the ingot mould of the first ingot mould connecting assembly ascends, and the second blanking hole can be closed after the ingot mould of the second ingot mould connecting assembly ascends.

8. The vacuum melting furnace for producing neodymium iron boron according to claim 4, characterized in that a first air inlet pipe, a second air inlet pipe, a first air outlet pipe and a second air outlet pipe are arranged on the furnace body, the first air inlet pipe and the first air outlet pipe are connected to the upper side furnace body of the partition plate, and the second air inlet pipe and the second air outlet pipe are connected to the lower side furnace body of the partition plate.

9. The vacuum melting furnace for neodymium iron boron production according to claim 1, characterized in that a material taking port is arranged on the side surface of the furnace body, and a sealing door is arranged at the material taking port.

10. The vacuum melting furnace for producing neodymium iron boron according to claim 1, characterized in that the furnace body is provided with at least one air inlet pipe and at least one air outlet pipe.

Technical Field

The invention relates to a vacuum smelting furnace, in particular to a vacuum smelting furnace for producing neodymium iron boron.

Background

The neodymium-iron-boron magnetic material is a tetragonal crystal formed by neodymium, iron and boron, and is widely used for preparing neodymium-iron-boron magnets. Neodymium iron boron magnets are widely used in electronic products such as hard disks, mobile phones, earphones, and battery powered tools.

In the production process of the neodymium iron boron material, a plurality of materials need to be smelted and sintered, and a vacuum smelting furnace needs to be used in the process. The vacuum melting furnace is mainly used for melting metal materials (such as stainless steel, nickel-based alloy, copper, alloy steel, nickel-cobalt alloy, rare earth neodymium-iron-boron and the like) under the condition of vacuum or protective atmosphere, and can also be used for carrying out vacuum refining treatment and precision casting on the alloy steel.

Neodymium iron boron magnets are the most common permanent magnets, and alloy melting is generally performed by a vacuum melting furnace.

The conventional vacuum melting furnace needs to be suspended for a long time after one melting so that the alloy can be cooled and solidified, but the melting efficiency is greatly influenced.

Disclosure of Invention

In view of this, it is necessary to provide a vacuum melting furnace for producing neodymium iron boron, which improves the processing efficiency of the vacuum melting furnace.

The invention discloses a vacuum smelting furnace for producing neodymium iron boron, which comprises: the furnace body is provided with a closed cavity; the crucible is arranged on a rotating shaft, the rotating shaft is arranged in the containing cavity and can rotate, and one end of the rotating shaft extends out of the furnace body; the turnover clutch mechanism is connected with one end of the rotating shaft extending out of the furnace body and can control the rotating shaft to rotate forwards and backwards; the first ingot mould is arranged at the lower side of the crucible and is used for containing molten alloy when the rotating shaft rotates forwards; the second ingot mould is arranged at the lower side of the crucible and is used for containing the molten alloy when the rotating shaft rotates reversely; and a lifting mechanism connected with the first ingot mold and the second ingot mold and capable of alternately lifting the first ingot mold and the second ingot mold.

In one embodiment, the tumble clutch mechanism includes: a first gear; a first clutch section; a second clutch section; a second gear; the regulating gear set comprises a gear carrier, a first transmission gear, a second transmission gear coaxially and fixedly connected with the first transmission gear, a third transmission gear meshed with the second transmission gear and a separation lug, wherein the first transmission gear can be meshed with the first gear, and meanwhile, the third transmission gear is meshed with the second gear; the telescopic cylinder is used for driving the regulating gear set to move along the horizontal direction, the first gear, the first clutch part, the second clutch part and the second gear are sequentially and coaxially arranged, and when the first clutch part is matched with the second clutch part, the first gear and the second gear rotate in the same direction; when the first transmission gear is meshed with the first gear, the third transmission gear is meshed with the second gear, and the separation lug extends into the space between the first clutch part and the second clutch part to separate the first clutch part from the second clutch part, so that the first gear and the second gear rotate reversely.

In one embodiment, the lifting mechanism comprises: a first ingot mold connection assembly; a second ingot mold connecting assembly; the driving gear can drive the first ingot mold connecting assembly and the second ingot mold connecting assembly to alternatively lift and descend; and the driving motor can drive the driving gear to rotate.

In one embodiment, a partition plate is arranged in the furnace body, a first blanking hole and a second blanking hole are formed in the partition plate and respectively correspond to the first ingot mold connecting assembly and the second ingot mold connecting assembly, the lifting mechanism further comprises a partition plate assembly, the partition plate assembly comprises a first belt wheel coaxially connected with the driving gear, a second belt wheel connected with the first belt wheel through a belt, a partition plate driving wheel coaxially connected with the second belt wheel, and a partition plate driven by the partition plate driving wheel, the partition plate assembly can slide along the horizontal direction, and when the first ingot mold connecting assembly is lifted, the partition plate closes the second blanking hole; when the second ingot mould connecting component is lifted, the baffle plate member closes the first blanking hole.

In one embodiment, the first ingot mold connecting assembly comprises a sliding block and a turnover motor, wherein the turnover motor is fixed on the sliding block and used for driving the first ingot mold to turn over, and the sliding block can move in the vertical direction under the driving of the driving gear.

In one embodiment, a water cooling device is arranged outside the ingot mould.

In one embodiment, the ingot mold of the first ingot mold connecting assembly can close the first blanking hole after rising, and the ingot mold of the second ingot mold connecting assembly can close the second blanking hole after rising.

In one embodiment, the furnace body is provided with a first air inlet pipe, a second air inlet pipe, a first air outlet pipe and a second air outlet pipe, the first air inlet pipe and the first air outlet pipe are connected to the upper furnace body of the partition plate, and the second air inlet pipe and the second air outlet pipe are connected to the lower furnace body of the partition plate.

In one embodiment, a material taking port is arranged on the side surface of the furnace body, and a sealing door is arranged at the material taking port.

In one embodiment, the furnace body is provided with at least one air inlet pipe and at least one air outlet pipe.

The technical scheme has the advantages that: the crucible can two side upset to set up two sets of ingot moulds, make two sets of ingot moulds can receive the molten alloy liquid, thereby prolonged the refrigerated time of alloy, make the crucible can last heat the melting, improved vacuum melting furnace's machining efficiency.

Drawings

Fig. 1 is a perspective view of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 2 is a perspective view of another view angle of the vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 3 is an exploded view of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 4 is a partial sectional view of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 5 is a partial sectional view of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 6 is a top view of the vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 7 is a cross-sectional view taken along plane a-a of fig. 6 in accordance with the present invention.

Fig. 8 is a half sectional view of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 9 is a perspective view of a regulating gear set of the vacuum melting furnace for producing neodymium iron boron provided by the invention.

Fig. 10 is a perspective view of a lifting mechanism of a vacuum melting furnace for producing neodymium iron boron provided by the invention.

In the figure, a vacuum melting furnace 100 for producing neodymium iron boron, a furnace body 10, a partition plate 11, a first blanking hole 111, a second blanking hole 112, a first air inlet pipe 12, a second air inlet pipe 13, a first air outlet pipe 14, a second air outlet pipe 15, a furnace cover 20, a feed inlet 21, an observation window 22, a turnover clutch mechanism 30, a first gear 31, a second gear 32, a first clutch part 33, a second clutch part 34, a regulating gear set 35, a gear frame 351, a first transmission gear 352, a second transmission gear 353, a third transmission gear 354, a partition bump 355, a telescopic cylinder 36, a spring 37, a first ingot mold 40, a second ingot mold 50, a lifting mechanism 60, a first ingot mold component 61, a sliding block 611, a turnover motor 612, a second ingot mold component 62, a driving gear 63, a partition plate component 65, a first belt pulley 651, a second belt pulley 652, a partition driving wheel 653, a partition plate component 654, a crucible 70, an operating handle 81, a second belt pulley 652, a, The door 82 is sealed.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The vacuum smelting furnace is used for metal smelting in a special environment, metal is smelted in an inert gas environment, and oxidation of the metal in the smelting process can be effectively avoided.

As shown in fig. 1 to 3, a vacuum melting furnace 100 for neodymium iron boron production includes: a furnace body 10 having a closed cavity; the crucible 70 is arranged on a rotating shaft, the rotating shaft is arranged in the containing cavity and can rotate, and one end of the rotating shaft extends out of the furnace body 10; the overturning clutch mechanism 30 is connected with one end of the rotating shaft extending out of the furnace body 10 and can control the rotating shaft to rotate forwards and backwards; a first ingot mold 40 disposed at a lower side of the crucible 70, for receiving the molten alloy when the rotation shaft rotates forward; a second ingot mold 50 disposed at a lower side of the crucible 70, for receiving the molten alloy when the rotation shaft is rotated reversely; and an elevating mechanism 60 connected to the first ingot mold 40 and the second ingot mold 50, and capable of alternately elevating and lowering the first ingot mold 40 and the second ingot mold 50.

It is understood that the first ingot mold 40 and the second ingot mold 50 are disposed below the crucible 70, and the crucible 70 can be turned to both sides to pour the molten metal into different ingot molds, thereby allowing the molten metal to be cooled in the ingot molds for a longer time by alternately receiving the molten metal in the first ingot mold 40 and the second ingot mold 50.

It should be noted that, the furnace body 10 includes a furnace cover 20 arranged at the top, a feed inlet 21 and an observation window 22 are arranged on the furnace cover 20, the feed inlet 21 is used for placing metal raw materials into the crucible 70, and the observation window 22 is convenient for an operator to observe the conditions in the furnace body 10.

Preferably, the tumble clutch mechanism 30 includes: a first gear 31; a first clutch portion 33; the second clutch portion 34; a second gear 32; a regulating gear set 35, referring to fig. 9, wherein the regulating gear set 35 includes a gear carrier 351, a first transmission gear 352, a second transmission gear 353 coaxially and fixedly connected with the first transmission gear 352, a third transmission gear 354 meshed with the second transmission gear 353, and a separation projection 355, the first transmission gear 352 can be meshed with the first gear 31, and simultaneously the third transmission gear 354 is meshed with the second gear 32; the telescopic cylinder 36 is used for driving the regulating gear set 35 to move along the horizontal direction, the first gear 31, the first clutch part 33, the second clutch part 34 and the second gear 32 are sequentially and coaxially arranged, and as shown in fig. 4, when the first clutch part 33 is matched with the second clutch part 34, the first gear 31 and the second gear 32 rotate in the same direction; as shown in fig. 5, when the first transmission gear 352 is engaged with the first gear 31, the third transmission gear 354 is engaged with the second gear 32, and the separation protrusion 355 extends between the first clutch part 33 and the second clutch part 34, so that the first clutch part 33 is separated from the second clutch part 34, and the first gear 31 and the second gear 32 rotate in opposite directions.

It can be understood that the crucible 70 is turned over under the control of the operating handle 81, the turning clutch mechanism 30 is disposed between the operating handle and the crucible 70, and the turning direction of the crucible 70 is controlled while the operating handle 81 maintains the same rotation direction.

Specifically, referring to fig. 8, when the first clutch part 33 and the second clutch part 34 are engaged, the operating handle 81 rotates counterclockwise to drive the first gear 31 to rotate, so as to drive the second gear 32 to rotate, so that the crucible 70 rotates counterclockwise, and the molten alloy is poured into the first ingot mold 40; when the telescopic cylinder 36 drives the regulating gear set 35 to move to the working position, the first transmission gear 352 is meshed with the first gear 31, and the third transmission gear 354 is meshed with the second gear 32, so that when the handle rotates anticlockwise, the crucible 70 rotates clockwise, and molten alloy is poured into the second ingot mold 50.

It should be noted that, when the regulating gear set 35 moves to the operating position, the separation protrusion 355 is inserted between the first clutch part 33 and the second clutch part 34, so as to separate the first clutch part 33 from the second clutch part 34, in this embodiment, a spring 37 is disposed between the second clutch part 34 and the second gear 32, when the separation protrusion 355 is inserted between the first clutch part 33 and the second clutch part 34, the spring 37 is compressed, the first clutch part 33 is separated from the second clutch part 34, and after the regulating gear set 35 is reset, the second clutch part 34 is reset by the spring 37 to cooperate with the first clutch part 33.

Preferably, as shown in fig. 6 to 8, the elevating mechanism 60 includes: a first ingot mold connecting assembly 61 connected to said first ingot mold 40; a second ingot mold connecting assembly 62 connected to said second ingot mold 50; a driving gear 63 capable of driving the first ingot mold connecting assembly 61 and the second ingot mold connecting assembly 62 to alternately ascend and descend; and a driving motor (not shown) capable of driving the driving gear 63 to rotate.

It will be appreciated that first ingot mold connecting assembly 61 and second ingot mold connecting assembly 62 are alternately raised and lowered, so that first ingot mold 40 and second ingot mold 50 are alternately raised and lowered.

Preferably, as shown in fig. 8, a partition plate 11 is disposed in the furnace body 10, the partition plate 11 is provided with a first blanking hole 111 and a second blanking hole 112, and corresponds to the first ingot mold connecting assembly 61 and the second ingot mold connecting assembly 62, respectively, the lifting mechanism 60 further includes a partition plate assembly 65, the partition plate assembly 65 includes a first belt pulley 651 coaxially connected to the driving gear 63, a second belt pulley 652 connected to the first belt pulley 651 through a belt, a partition plate driving wheel 653 coaxially connected to the second belt pulley 652, and a partition plate 654 driven by the partition plate driving wheel 653, the partition plate 654 can slide in a horizontal direction, and when the first ingot mold connecting assembly 61 is lifted, the partition plate 654 closes the second blanking hole 112; when the second ingot mold connecting assembly 62 is raised, the bulkhead piece 654 closes the first blanking hole 111.

It should be noted that the partition plate 11 divides the interior of the furnace body 10 into two cavities, and the partition plate 654 is provided to cooperate with the first ingot mold 40 and the second ingot mold 50, so that the two cavities can be blocked, thereby reducing the gas exchange between the two cavities and maintaining the inert gas concentration in the cavity in which the crucible 70 is located.

Specifically, after the first ingot mold 40 rises, the baffle piece 654 moves to the second blanking hole 112 and closes the second blanking hole 112, and after the second ingot mold 50 rises, the baffle piece 654 moves to the first blanking hole 111 and closes the first blanking hole 111, thereby reducing the gas exchange between the two cavities in the furnace body 10.

It is worth mentioning that the division plate 11 divides the furnace body 10 into an upper cavity and a lower cavity, so that the lower cavity of the division plate 11 can keep a lower temperature in the heating process of the upper cavity of the division plate 11, thereby being beneficial to accelerating the solidification of the molten alloy.

Preferably, the first ingot mold connecting assembly 61 comprises a sliding block 611 and a turnover motor 612, the turnover motor 612 is fixed on the sliding block 611 for driving the first ingot mold 40 to turn over, and the sliding block 611 can move in the vertical direction under the driving of the driving gear 63.

It should be noted that second ingot mold connecting assembly 62 has the same structure as first ingot mold connecting assembly 61, and both sliding block 611 of first ingot mold connecting assembly 61 and sliding block 611 of second ingot mold connecting assembly 62 are engaged with driving gear 63, and first ingot mold connecting assembly 61 and second ingot mold connecting assembly 62 can be alternatively lifted and lowered under the driving of driving gear 63.

Preferably, a water cooling device (not shown) is arranged outside the ingot mold.

It can be understood that the cooling speed of the molten alloy in the ingot mold can be increased by providing a water cooling device, which is a conventional structure in the art and will not be described herein.

Preferably, the ingot mold of the first ingot mold connecting assembly 61 can be lifted to close the first blanking hole 111, and the ingot mold of the second ingot mold connecting assembly 62 can be lifted to close the second blanking hole 112.

It can be understood that the first ingot mold 40 can close the first blanking hole 111 and the second ingot mold 50 can close the second blanking hole 112, so that the upper and lower sides of the partition plate 11 have a better partition effect in the working state of the crucible 70.

Preferably, a material taking opening is formed in the side face of the furnace body 10, and a sealing door 82 is arranged at the material taking opening. It will be appreciated that the sealing door 82 is capable of closing the material withdrawal opening.

Preferably, the furnace body 10 is provided with at least one air inlet pipe and at least one air outlet pipe.

It should be noted that, when only one air inlet pipe and one air outlet pipe are provided on the furnace body 10, the air inlet pipe and the air outlet pipe are both connected to the upper side of the partition plate, so as to ensure that the protective gas in the alloy heating chamber has sufficient concentration.

In this embodiment, the furnace body 10 is provided with a first gas inlet pipe 12, a second gas inlet pipe 13, a first gas outlet pipe 14, and a second gas outlet pipe 15, the first gas inlet pipe 12 and the first gas outlet pipe 14 are connected to the upper furnace body 10 of the partition plate 11, and the second gas inlet pipe 13 and the second gas outlet pipe 15 are connected to the lower furnace body 10 of the partition plate 11.

It can be understood that, by providing the second gas inlet pipe 13 and the second gas outlet pipe 15, the lower side of the partition plate 11 can maintain a certain purity, thereby further preventing the excessive impurity gas from entering into the cavity on the upper side of the partition plate 11 during the movement of the partition plate 654.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.