CN219752142U

CN219752142U - Quartz crucible preparation system

Info

Publication number: CN219752142U
Application number: CN202321041704.4U
Authority: CN
Inventors: 白锋; 李侨; 曹杰; 董升; 朱永刚
Original assignee: Longi Green Energy Technology Co Ltd
Current assignee: Longi Green Energy Technology Co Ltd
Priority date: 2023-05-04
Filing date: 2023-05-04
Publication date: 2023-09-26
Anticipated expiration: 2033-05-04

Abstract

The utility model discloses a quartz crucible preparation system, and belongs to the technical field of quartz crucible production. Comprising the following steps: the melting device comprises a cover body assembly and a furnace body assembly, and the cover body assembly and the furnace body assembly are enclosed to form a sealed cavity; the vacuum device is communicated with the furnace body assembly and is used for pumping out air in the sealed cavity to form a vacuum cavity; the cover body assembly comprises a furnace cover and a plurality of electrode structures, wherein the electrode structures are arranged on the furnace cover in a penetrating mode and at least partially extend into the furnace body assembly, and are electrified to generate high-temperature electric arcs. The raw materials are prepared by melting under the high vacuum condition, so that impurities in the atmosphere can be isolated, the beneficial effects of reducing impurities in the quartz crucible are achieved, and the quality and the service life of the quartz crucible are further improved.

Description

Quartz crucible preparation system

Technical Field

The utility model belongs to the technical field of quartz crucible production, and particularly relates to a quartz crucible preparation system.

Background

With the rising and continuous expansion of the photovoltaic industry, the need for quartz crucibles as important consumables for the pulling of single crystal silicon by the Czochralski method has risen year by year. In the actual drawing process, a fused quartz crucible with excellent quality and stable service life is required to be used as a support.

In the prior art, quartz crucibles are essentially in an atmospheric environment during the manufacturing process. The method for producing the quartz crucible by the arc method comprises the steps of firstly pouring raw materials (such as quartz sand) into a mould, forming a crucible blank on the inner wall of the mould by adopting a forming piece through rotation of the mould, then burning the crucible blank by heat released by a heater to enable the quartz sand to be melted, obtaining a crucible blank after melting for a certain time, and cutting and cleaning the crucible blank to obtain the quartz crucible.

However, the gas in the atmosphere cannot be completely removed during the manufacturing process of the quartz crucible, so that a large amount of bubbles are stored in the wall of the quartz crucible, and when a single crystal is pulled, the bubbles in the wall of the quartz crucible expand and break due to the fact that the crucible is in a high-temperature environment for a long time, and the quality and the service life of the crucible are affected.

Disclosure of Invention

The embodiment of the utility model aims to provide a quartz crucible preparation system which can solve the problem that the service life of a crucible is influenced by excessive impurities and bubbles in a quartz crucible in the prior art.

In order to solve the technical problems, the utility model is realized as follows:

the embodiment of the utility model provides a quartz crucible preparation system, which is used for melting a quartz crucible and comprises the following components: the melting device comprises a cover body assembly and a furnace body assembly, and the cover body assembly and the furnace body assembly are enclosed to form a sealed cavity; the vacuum device is communicated with the furnace body assembly and is used for pumping out air in the sealed cavity to form a vacuum cavity; the cover body assembly comprises a furnace cover and a plurality of electrode structures, wherein the electrode structures are arranged on the furnace cover in a penetrating mode and at least partially extend into the furnace body assembly, and are electrified to generate high-temperature electric arcs.

In the embodiment of the utility model, the main determination of the quality and the service life of the quartz crucible is based on the impurity and bubble content of the inner layer, and the generation of the impurity and the bubble mainly originates from the production equipment and the production mode, and the quartz crucible preparation system is arranged for preparing the quartz crucible with excellent quality and stable service life. In practical application, the melting device is used for heating raw materials (quartz sand) in the manufacturing process so as to melt the raw materials and prepare the quartz crucible. The melting device comprises an electrode, and the electrode is electrified to generate electric arc release heat to radiate heat to the raw materials so as to melt the raw materials. In addition, the melting device also comprises a cover body component and a furnace body component, the cover body component and the furnace body component are enclosed to form a sealed cavity, and the sealed cavity is communicated with the vacuum device. In practical application, through the vacuum environment in the sealed cavity of mutual link up realization of vacuum device and furnace body subassembly, then the rethread electrode heats the raw materials in the furnace body for the raw materials melts the preparation under high vacuum condition, can isolate the impurity in the atmospheric air, has the beneficial effect that reduces impurity in the quartz crucible, and then improves quartz crucible's quality and life.

Drawings

FIG. 1 is a schematic diagram showing a front view of a sand feeding state of a quartz crucible manufacturing system according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing a side view of a sand feeding state of a quartz crucible manufacturing system according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram showing a front view of a fused state of a quartz crucible manufacturing system according to an embodiment of the present utility model;

FIG. 4 is a schematic side view showing a molten state of a quartz crucible manufacturing system according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing the structure of a lid assembly of a quartz crucible preparing system according to an embodiment of the present utility model.

Reference numerals illustrate:

10. a melting device; 11. a cover assembly; 12. a furnace cover; 13. an electrode structure; 131. a graphite electrode; 132. water-cooled electrodes; 14. a thermal insulation cover; 15. a lifting structure; 151. a movable member; 152. a lifting driving member; 153. a screw rod; 155. a guide rod; 156. a support; 16. a furnace body assembly; 121. a first furnace body; 122. a second furnace body; 123. an air inlet hole; 124. an exhaust hole; 20. a rotary aerocar; 21. a thermal insulation member; 30. a first lifting device; 31. a first driving member; 32. a clamping member; 40. a second lifting device; 41. a bracket; 42. a connecting piece; 43. a fixed pulley block; 44. a counterweight assembly; 45. and a carrier for the aerocar.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present utility model may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The subject matter and the electronic device provided by the embodiment of the utility model are described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a quartz crucible preparation system for melting a quartz crucible, comprising: the melting device 10, the melting device 10 comprises a cover body assembly 11 and a furnace body assembly 16, and the cover body assembly 11 and the furnace body assembly 16 are enclosed to form a sealed cavity; a vacuum device communicated with the furnace body assembly 16, wherein the vacuum device is used for pumping out air in the sealed cavity to form a vacuum cavity; the cover body assembly 11 comprises a furnace cover 12 and a plurality of electrode structures 13, wherein the electrode structures 13 are arranged on the furnace cover 12 in a penetrating way and at least partially extend into the furnace body assembly 16, and are electrified to generate high-temperature electric arcs.

In the embodiment of the utility model, the main determination of the quality and the service life of the quartz crucible is based on the impurity and bubble content of the inner layer, and the generation of the impurity and the bubble mainly originates from the production equipment and the production mode, and the quartz crucible preparation system is arranged for preparing the quartz crucible with excellent quality and stable service life. In practice, the melting apparatus 10 is provided for heating the raw material (quartz sand) during the manufacturing process to melt the raw material and thereby prepare the quartz crucible. The melting apparatus 10 includes electrodes, and the electrodes are energized to generate arc discharge heat to radiate heat to the raw materials to melt the raw materials. In addition, the melting device 10 further comprises a cover body assembly 11 and a furnace body assembly 16, wherein the cover body assembly 11 and the furnace body assembly 16 are enclosed to form a sealed cavity, and the sealed cavity is communicated with the vacuum device. In practical application, the vacuum environment in the sealed cavity is realized through the mutual communication of the vacuum device and the furnace body assembly 16, and then the raw materials are heated in the furnace body through the electrode structure 13, so that the raw materials are prepared by melting under the high vacuum condition, the impurities in the atmosphere can be isolated, the beneficial effects of reducing the impurities in the quartz crucible are achieved, and the quality and the service life of the quartz crucible are improved.

It should be noted that, the plurality of electrodes may be uniformly arranged on the furnace cover 12, it can be understood that when the electrodes are electrified to generate electric arc to release heat, the plurality of electrodes uniformly arranged on the furnace cover 12 correspondingly and uniformly extend into the furnace body assembly 16 at least partially, so that raw materials arranged in the furnace body assembly 16 can be uniformly heated, and the heating is more uniform, so that the quartz crucible has the beneficial effects of further improving the quality and prolonging the service life of the quartz crucible.

Optionally, in an embodiment of the present utility model, the electrode structure 13 includes: the water-cooled electrode 132 is arranged on one side of the furnace cover 12 away from the furnace body assembly 16, at least partially penetrates through the furnace cover 12 and is movably connected with the furnace cover 12; the graphite electrode 131 is arranged on one side of the furnace cover 12, which is close to the furnace body assembly 16, the graphite electrode 131 is detachably connected with the water-cooled electrode 132, and the graphite electrode 131 at least partially stretches into the furnace body assembly 16; wherein, graphite electrode 131 is electrified to generate high-temperature electric arc, and water-cooled electrode 132 is electrified to realize cooling.

In the embodiment of the present utility model, the electrode structure 13 includes a water-cooled electrode 132 and a graphite electrode 131, where the water-cooled electrode 132 and the graphite electrode 131 are detachably connected, and the water-cooled electrode 132 is disposed on a side of the furnace cover 12 facing away from the furnace body assembly 16 and at least partially penetrates through the furnace cover 12 to be movably connected with the furnace cover 12, and it is understood that the water-cooled electrode 132 penetrates through the furnace cover 12 and can move up and down at the penetrating position. The graphite electrode 131 is disposed on a side of the furnace cover 12 near the furnace body assembly 16, and the graphite electrode 131 at least partially extends into the furnace body assembly 16, it will be appreciated that in practical application, the vacuum device and the furnace body assembly 16 are mutually communicated to realize a vacuum environment in the sealed cavity, and the graphite electrode 131 is electrified to generate arc release heat to radiate heat to the raw materials so as to melt the raw materials. The raw materials can be prepared by melting under the high vacuum condition, so that the impurities in the atmosphere can be isolated, the beneficial effects of reducing the impurities in the quartz crucible are achieved, and the quality and the service life of the quartz crucible are further improved. In addition, the water-cooled electrode 132 can not only cool itself, but also cool one side of the furnace cover 12 close to the furnace body assembly 16, so as to prevent the heat emitted by the graphite electrode 131 from damaging the furnace cover 12 and the parts at the joint of the furnace cover 12 and the furnace body assembly 16.

It should be noted that, the water-cooled electrode 132 and the graphite electrode 131 may be detachably connected by a screw, or may be detachably connected by a clamping protrusion and a clamping groove, which is not limited in this embodiment.

It should be further noted that, the end of the water-cooled electrode 132 far away from the graphite electrode 131 may be provided with a liquid inlet hole and a liquid outlet hole, the liquid inlet hole is configured to enable cooling liquid to flow in, the liquid outlet hole is configured to enable cooling liquid to flow out, and the cooling liquid flows in the water-cooled electrode 132 to achieve a cooling function. The cooling liquid may be water or other liquid capable of realizing the cooling function, and the present embodiment is not limited in any way.

Optionally, in an embodiment of the present utility model, the cover assembly 11 further includes: the heat preservation cover 14, the heat preservation cover 14 is arranged on one side of the furnace cover 12, which is close to the furnace body assembly 16, along the direction parallel to the furnace cover 12, the heat preservation cover 14 is fixedly connected to the furnace cover 12, and the graphite electrode 131 penetrates through the heat preservation cover 14 and is movably connected with the heat preservation cover 14.

In the embodiment of the utility model, the heat-preserving cover 14 is arranged on one side of the furnace cover 12 close to the furnace body assembly 16 along the direction parallel to the furnace cover 12, and the heat-preserving cover 14 is fixedly connected with the furnace cover 12. In practical application, the heat-insulating cover 14 arranged on one side of the furnace cover 12 close to the furnace body assembly 16 is equivalent to adding a heavy guarantee for the sealed cavity, when the vacuum degree in the sealed cavity meets the process requirement, the graphite electrode 131 is electrified to generate high-temperature electric arc and continuously generate heat, the raw materials are melted by heating the heat radiation, the sealed cavity formed between the furnace cover 12 and the furnace body assembly 16 is formed, the heat-insulating cover 14 is arranged between the furnace cover 12 and the furnace body assembly 16, namely, a heat-insulating layer is added between the furnace cover 12 and the furnace body assembly 16, the heat-insulating cover 14 can effectively reduce the heat radiation of the sealed cavity outwards, so that the heat generated by the graphite electrode 131 can be applied to the preparation of the quartz crucible as much as possible, and the heat-insulating cover has the beneficial effect of improving the heat efficiency of the quartz crucible preparation system. Furthermore, it is possible to provide a device for the treatment of a disease. The graphite electrode 131 penetrates through the heat insulation cover 14 and is movably connected with the heat insulation cover 14, and it can be understood that the graphite electrode 131 penetrates through the heat insulation cover 14 and can move up and down at the penetrating position.

The insulating cover 14 may be a graphite felt or a carbon-carbon material, and may have an insulating effect in the process of heating the raw material by the electrode, which is not limited in this embodiment.

Optionally, in an embodiment of the present utility model, the cover assembly 11 further includes: the lifting structures 15 are arranged on one side, away from the heat preservation cover 14, of the furnace cover 12, any one lifting structure 15 is detachably connected with the water-cooled electrode 132, and the lifting structures 15 are used for driving the water-cooled electrode 132 to move in a direction close to the furnace body assembly 16 or in a direction far away from the furnace body assembly 16.

In the embodiment of the utility model, the number of the lifting structures 15 is greater than or equal to the number of the electrode structures 13, and the lifting structures 15 and the electrode structures 13 are in one-to-one correspondence. Of course, the number of the lifting structures 15 may be smaller than the number of the electrode structures 13, and one lifting structure 15 may drive at least two electrode structures 13 to lift. The lifting structure 15 is arranged on one side of the furnace cover 12 away from the heat preservation cover 14, and the lifting structure 15 is used for driving the water-cooled electrode 132 to move in a direction close to the furnace cover 12 or in a direction far away from the furnace cover 12. It can be appreciated that, since the water-cooled electrode 132 and the graphite electrode 131 are detachably connected, the graphite electrode 131 is driven to move in the same direction when the water-cooled electrode 132 moves. In practical application, when the vacuum degree in the sealed cavity meets the process requirement, the lifting mechanism drives the water-cooled electrode 132 to move towards the direction close to the furnace body assembly 16, and when the water-cooled electrode 132 moves towards the direction close to the furnace body assembly 16, the graphite electrode 131 also moves along the same direction and gradually stretches into the sealed cavity and approaches the raw material, then the graphite electrode 131 is electrified to generate high-temperature electric arc and continuously generate heat, and the raw material is melted by heat radiation. According to the embodiment of the utility model, the lifting structure 15 is arranged to enable the graphite electrode 131 to be close to the raw material, so that the heat waste generated by the graphite electrode 131 is prevented, and the heat utilization rate is improved.

Optionally, in an embodiment of the present utility model, the lifting structure 15 includes: a movable member 151, wherein the movable member 151 is clamped at the periphery of the water-cooled electrode 132; the supporting piece 156 is arranged on one side of the movable piece 151 away from the furnace cover 12, and the supporting piece 156 is arranged on the periphery of the water-cooled electrode 132 and is movably connected with the water-cooled electrode 132; a lift driving member 152, the lift driving member 152 being disposed at a first end of the support member 156; one end of the lead screw 153 is movably connected to the first end, the other end of the lead screw 153 penetrates through the movable piece 151 and is movably connected with the furnace cover 12, and the lead screw 153 is connected with the lifting driving piece 152; when the lifting driving member 152 drives the screw 153 to rotate, the moving member 151 moves up and down along the screw 153, so as to drive the water-cooled electrode 132 to move in a direction away from the furnace assembly 16 or in a direction close to the furnace assembly 16.

In an embodiment of the present utility model, the elevation structure 15 includes an elevation driving member 152, a screw 153, a screw nut 154, a supporting member 156, and a movable member 151. The support 156 and the movable member 151 may be disposed in a direction parallel to the furnace lid 12, and the support 156 is disposed on a side of the movable member 151 facing away from the furnace lid 12. One end of the screw 153 is movably connected to the first end of the supporting member 156, the other end of the screw 153 penetrates through the movable member 151 and is movably connected with the furnace cover 12, the movable member 151 is sleeved on the periphery of the screw 153 and is movably connected with the screw 153, and the screw 153 is connected with the lifting driving member 152. The elevation driving member 152 is used to drive the screw 153 to rotate, and in the case of rotation of the screw 153, both the first end of the screw 153 and the second end of the screw 153 rotate, while the furnace cover 12 does not rotate with the rotation of the screw 153. At this time, in order to prevent the support member 156 movably connected to the screw 153 from rotating with the rotation of the screw 153, other structures may be used to fix the support member 156 or the lifting driving member 152 so as to ensure the normal operation of the lifting structure 15. The movable member 151 clamps the water-cooled electrode 132 and is fixedly connected with the water-cooled electrode 132, and one end of the water-cooled electrode 132, which is far away from the graphite electrode 131, is penetrated through the supporting member 156 and is movably connected with the supporting member 156. Under the condition that the lifting driving member 152 drives the screw 153 to rotate, the moving member 151 moves up and down along the screw 153 to drive the moving member 151 to move up and down along the screw 153, and meanwhile, in the process that the moving member 151 moves along the screw 153, the water-cooled electrode 132 is driven to move in a direction away from the furnace body assembly 16 or in a direction close to the furnace body assembly 16. In practical application, after melting, the lifting driving member 152 drives the screw 153 to rotate, and the moving member 151 moves upward along the screw 153, so that the water-cooled electrode 132 moves in a direction away from the furnace assembly 16.

The movable member 151 and the supporting member 156 may be plate-type movable members 151 having a plurality of holes, or may be block-type movable members 151 having a certain thickness, wherein the movable members 151 may be movably connected to the screw 153, and the supporting member 156 may be fixedly connected to the lifting driving member 152 and one end of the screw 153. The present embodiment is not limited in shape to the movable member 151 and the support member 156.

It should be noted that, the lifting mechanism 15 may further include a screw nut 154, where the screw nut is sleeved on the screw 153 and is movably connected with the screw 153, and the screw nut is disposed on a side of the movable member 151 near the furnace cover 12 and is fixedly connected with the movable member 151. The movable member 151 clamps the water-cooled electrode 132 and is fixedly connected with the water-cooled electrode 132, and one end of the water-cooled electrode 132, which is far away from the graphite electrode 131, is penetrated through the supporting member 156 and is movably connected with the supporting member 156. In the case that the elevation driving member 152 drives the screw 153 to rotate, the screw nut moves up and down along the screw 153 to drive the movable member 151 to move up and down along the screw 153,

optionally, in an embodiment of the present utility model, the lifting structure 15 further includes: the guide rod 155, one end of the guide rod 155 is fixedly connected to the second end of the supporting member 156, the other end of the guide rod 155 penetrates through the movable member 151 and is fixedly connected with the furnace cover 12, and the guide rod 155 is movably connected with the movable member 151; in the case where the mover 151 moves up and down along the lead screw 153, the mover 151 also moves up and down along the guide bar 155; wherein the first end and the second end are disposed opposite.

In the embodiment of the present utility model, the guide rods 155 and the lead screw 153 are both disposed in a direction perpendicular to the furnace cover 12, and the lead screw 153 may be disposed between the plurality of guide rods 155, may be disposed at a side of the guide rods 155, or may be disposed opposite to the guide rods 155, which is not limited in this embodiment. One end of the guide rod 155 is fixedly connected to the second end of the supporting member 156, the other end of the guide rod 155 penetrates through the movable member 151 and is fixedly connected with the furnace cover 12, and the movable member 151 is sleeved on the guide rod 155 and is movably connected with the guide rod 155. The provision of the guide bar 155 has the advantageous effect of preventing the movement direction from being deviated during the up-and-down movement of the movable member 151. In practical application, after melting, the lifting driving member 152 drives the screw rod 153 to rotate, and the screw rod nut 154 moves upwards to drive the movable member 151 to move upwards, so that the water-cooled electrode 132 moves in a direction away from the furnace body assembly 16, and the graphite electrode 131 is driven to move in a direction away from the furnace body assembly 16. At this time, the sealed cavity formed by the furnace cover 12, the heat-insulating cover 14 and the furnace body assembly 16 still maintains a high vacuum environment.

Alternatively, in the embodiment of the present utility model, the furnace body assembly 16 includes a first furnace body 121 and a second furnace body 122, the first furnace body 121 and the second furnace body 122 are detachably connected, and the first furnace body 121 is sandwiched between the furnace cover 12 and the second furnace body 122; the furnace body assembly 16 further comprises an air inlet hole 123 and an air outlet hole 124, wherein any one of the air inlet hole 123 and the air outlet hole 124 is arranged on the first furnace body 121, the other one is arranged on the second furnace body 122, and the air inlet hole 123 and the air outlet hole 124 are used for realizing gas communication between the sealed cavity and the outside.

In the embodiment of the utility model, the first furnace body 121 and the second furnace body 122 are movably connected, and the furnace cover 12, the first furnace body 121 and the second furnace body 122 are sequentially piled up to form a sealed chamber, so as to provide a sealed environment for the melting process and prepare for subsequent heating and vacuumizing. The furnace assembly 16 further includes an air intake hole 123 and an air exhaust hole 124, wherein the air intake hole 123 may be disposed on the first furnace 121 or on the second furnace 122. Accordingly, when the air intake holes 123 are provided on the first furnace body 121, the air discharge holes 124 may be provided on the second furnace body 122 or may be provided on the first furnace body 121. It should be noted that, in practical application, the first furnace body 121 may be provided with a plurality of air inlets 123 according to practical needs, so as to be connected to a plurality of external devices, or may be provided with one air inlet 123, so that the external devices are all connected to the same air inlet 123 through a plurality of valves, which is not limited in this embodiment.

Optionally, in an embodiment of the present utility model, the quartz crucible preparation system further includes a turning device, the turning device including: the aerocar support 46, the aerocar support 46 is used for placing the second furnace body 122; the rotary aerocar 20, the rotary aerocar 20 is used for driving the aerocar support 46 to move towards the melting device 10 or move away from the melting device 10; the mold is arranged on the bottom surface of the second furnace body 122 and is used for placing quartz sand, the heat preservation pieces 21 and the heat preservation pieces 21 are all arranged on the bottom surface of the second furnace body 122, and the heat preservation pieces 21 are arranged on the periphery of the mold in a surrounding mode to form a cylinder shape; during the melting of the quartz crucible, the electrode structure 13 extends at least partially into the insulating member 21 and is adjacent to the mold.

In an embodiment of the present utility model, the articulated vehicle 20 may be moved in a direction toward the melting device 10 or in a direction away from the melting device 10. In practical application, a certain distance is reserved between the melting position under the melting device 10 and the upper sand position for filling raw materials into the die, the spatial positions of the upper sand position and the melting position are different, the processing procedures are also different, raw materials are added into the die at the upper sand position, and the melting preparation is carried out at the melting position. The rotary aerocar 20 can move between the sand feeding position and the melting position, and the aerocar support 46 can drive the second furnace body 122, the die and the heat preservation piece 21 to turn over, so that the second furnace body 122 inclines sideways to facilitate sand feeding at the sand feeding position, and the second furnace body 122 can be opened towards the first furnace body 121 to be placed forward to facilitate melting at the melting position. The mold, the heat-insulating member 21 and the second furnace body 122 are arranged in the rotary aerocar 20, and are driven to move by the rotary aerocar 20 so as to realize rotation between the sand feeding position and the melting position. The rotary boat 20 is connected with a boat bracket 46, and the boat bracket 46 is used for placing a mold and a heat preservation piece 21. When the rotary boat 20 moves to the melting position, the direction of the mold and the direction of the furnace cover 12 are parallel under the support of the boat support 46 in the process of melting the quartz crucible, and the boat support 46 can balance the gravity of the first furnace body 121 and the furnace cover 12.

It should be noted that, the boat carrier 46 may be fixedly connected to the side wall of the rotary boat 20, or may be movably connected to the side wall, which is not limited in this embodiment. The boat truck support 46 may be movably connected to the side wall by a rotating member so that the boat truck support 46 may be switched between being perpendicular to the side wall and parallel to the side wall, and when the rotary boat truck 20 is moved to the upper sand level, the angle between the boat truck support 46 and the side wall is reduced when the worker adds material into the mold so that the mold is inclined, thereby facilitating the worker to feed. And the inclination angle of the mold can be adjusted during the feeding process, the thickness uniformity of the material layer on the inner surface of the mold is ensured, and a crucible blank body is formed on the inner wall of the mold by combining the rotation of the mold. In addition, the rotation of the mold can be combined in the process of heating the raw materials, so that the heating is more uniform, and the quartz crucible has the beneficial effect of improving the quality of the quartz crucible.

Further, the furnace assembly 16 may be a monolithic furnace, and it is understood that the first furnace 121 and the second furnace 122 are not separable from each other. Meanwhile, when the furnace body assembly 16 is an integral furnace body, the heat insulating member 21 and the mold may be put into the furnace body assembly 16 from an upper opening of the furnace body assembly 16 to provide a melting base for melting the quartz crucible.

It should be noted that, the heat insulating member 21 and the mold may be a split structure or an integral structure, and the present embodiment is not limited in any way.

Optionally, in an embodiment of the present utility model, the quartz crucible preparation system further includes: the first lifting device 30, the first lifting device 30 comprises a first driving piece 31 and a clamping piece 32, the clamping piece 32 is used for clamping at least part of the furnace body assembly 16, and the first driving piece 31 is used for driving the clamping piece 32 to drive at least part of the furnace body assembly 161 and the cover body assembly 11 to move along the direction perpendicular to the furnace cover 12; the second lifting device 40, the second lifting device 40 comprises a bracket 41, a connecting piece 42, a fixed pulley block 43 and a counterweight component 44, the bracket 41 is erected on the periphery of the melting device 10 along the direction vertical to the furnace cover 12, the fixed pulley block 43 is arranged at the top end of the bracket 41, one end of the connecting piece 42 is connected with the furnace cover 12, and the other end of the connecting piece 42 bypasses the fixed pulley block 43 to be connected with the counterweight component 44; when the first lifting device 30 moves the furnace body assembly 16 in a direction perpendicular to the furnace cover 12, the weight assembly 44 moves in a direction perpendicular to the furnace cover 12 in a direction opposite to the movement of the furnace body assembly 16.

In the present embodiment, the first lifting device 30 is configured to drive at least a portion of the furnace body assembly 161 and the furnace cover 12 to lift up and down. The first lifting device 30 includes a first driving member 31 and a clamping member 32, where the clamping member 32 is used to clamp at least part of the furnace body assembly 161, and the clamping member 32 may clamp the furnace body assembly 161 from two sides of the furnace body assembly 161, or may clamp the furnace body assembly 161 from above the furnace body assembly 161, which is not limited in this embodiment. The first driving member 31 is connected to the clamping member 32, and the first driving member 31 is configured to drive the clamping member 32 to move the first furnace body 121 along a direction perpendicular to the furnace cover 12. Further, since the furnace cover 12 is stacked above the furnace body assembly 161, the clamping member 32 drives the furnace body assembly 161 to move up and down, and simultaneously indirectly drives the furnace cover 12 to move up and down. In the embodiment of the present utility model, the first elevating means 30 has the advantage of elevating at least part of the furnace body assembly 161 and the furnace cover 12 up and down. The second lifting device 40 is provided to assist in lifting and lowering the furnace lid 12. A bracket 41 is provided around the periphery of the melting device 10 in a direction perpendicular to the furnace cover 12 for providing a supporting force for the fixed pulley block 43. The fixed pulley block 43 is arranged at the top end of the bracket 41, one end of the connecting piece 42 is connected with the furnace cover 12, and the other end of the connecting piece 42 bypasses the fixed pulley block 43 and is connected with the counterweight component 44. In practical applications, when at least part of the furnace body assembly 161 moves up and down along with the first lifting device 30 to drive the furnace cover 12 to move up and down, one end of the connecting member 42 rises or descends along with the furnace cover 12, the connecting member 42 bypasses the fixed pulley block 43, and the other end of the connecting member 42 and the counterweight assembly 44 descend or ascend. When the first furnace body 121 falls on the second furnace body 122 on the swing car 20, the clamping member 32 of the first lifting device 30 releases the first furnace body 121.

The first driving member 31 may be a screw rod or an oil cylinder, which is not limited in this embodiment.

It should be noted that, the first lifting device 30 is configured to drive at least the first furnace body 121 and the furnace cover 12 to lift up and down. It will be appreciated that the first driving member 31 is connected to the clamping member 32, and that the first driving member 31 is configured to drive the clamping member 32 to move the first furnace body 121 in a direction perpendicular to the furnace lid 12. Further, since the furnace cover 12 is stacked above the first furnace body 121, the clamping member 32 drives the first furnace body 121 to move up and down, and simultaneously indirectly drives the furnace cover 12 to move up and down.

Optionally, in an embodiment of the present utility model, the quartz crucible preparation system further includes: an inert gas device is communicated with the furnace body assembly 16, and is used for filling inert gas into the sealed cavity so as to reduce the temperature in the melting device 10. In addition, the inert gas device can also provide a certain inert gas atmosphere in the furnace in the melting process.

In the embodiment of the utility model, the inert gas device can be used for introducing inert gas into the sealed cavity before melting and after the sealed cavity forms a vacuum cavity so as to form inert gas atmosphere and then electrifying and heating the sealed cavity through the graphite electrode, and has the beneficial effect of being convenient for electrode arcing. Further, as can be seen from the foregoing, any one of the first furnace body 121 and the second furnace body 122 includes an air inlet hole 123, and the air inlet hole 123 is connected to an inert gas device, and inert gas enters the vacuum chamber along the air inlet hole 123. The other one of the first and second furnace bodies 121 and 122 includes an exhaust hole 124, the exhaust hole 124 being connected with a vacuum device, the vacuum device exhausting gas in the sealed cavity through the exhaust hole 124 to realize a vacuum environment in the sealed cavity, having the beneficial effect of reducing impurities and bubbles in the quartz crucible. In addition, the quartz crucible preparation system adopting the utility model has two working modes: one mode of operation is vacuum arc melting without inert gas protection, and the other mode of operation is vacuum arc melting with inert gas protection. When the second operation mode is adopted, the inert gas is introduced from the gas inlet of the furnace body assembly 16 when the internal vacuum degree reaches the process requirement, and then the water-cooled electrode 132 and the graphite electrode 131 are electrified to generate electric arc to release heat after the predetermined pressure is reached.

Optionally, in an embodiment of the present utility model, the quartz crucible preparation system further includes: and the cooling device is communicated with the furnace body assembly 16 and is used for cooling the heated inert gas extracted from the sealed cavity, and the cooled inert gas is filled into the sealed cavity after being cooled by the cooling device so as to realize the circular cooling of the inside of the sealed cavity through the cooled inert gas.

In the embodiment of the utility model, the inert gas device and the cooling device can be used for circularly cooling the sealed cavity after melting. The inert gas is introduced into the vacuum chamber through the inert gas device, and the inert gas which has been heated up in the vacuum chamber is pumped out through the cooling device. And cooling the extracted inert gas after heating by a cooling system, and then filling the inert gas into the vacuum chamber again to realize the circulating cooling of the inert gas in the vacuum chamber. The embodiment of the utility model has the beneficial effect of realizing the indoor circulation cooling of the vacuum chamber.

In addition, one end of the cooling device is connected with the air inlet hole 123, the other end of the cooling device is connected with the air outlet hole 124, and the heated inert gas enters the cooling device from the air outlet hole 124, is cooled by the cooling device and then enters the vacuum chamber through the air inlet hole 123, so that the circulation cooling of the inside of the vacuum chamber is realized.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present utility model is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.

Claims

1. A quartz crucible preparation system for melting a quartz crucible, comprising:

the melting device (10) comprises a cover body assembly (11) and a furnace body assembly (16), wherein the cover body assembly (11) and the furnace body assembly (16) are enclosed to form a sealed cavity;

a vacuum device, which is communicated with the furnace body assembly (16) and is used for pumping out the air in the sealed cavity to form a vacuum cavity;

the cover body assembly (11) comprises a furnace cover (12) and a plurality of electrode structures (13), wherein the electrode structures (13) are arranged on the furnace cover (12) in a penetrating mode and at least partially extend into the furnace body assembly (16) and are electrified to generate high-temperature electric arcs.

2. Quartz crucible preparation system according to claim 1, characterized in that the electrode structure (13) comprises:

the water-cooled electrode (132) is arranged on one side of the furnace cover (12) away from the furnace body assembly (16), at least partially penetrates through the furnace cover (12) and is movably connected with the furnace cover (12);

the graphite electrode (131) is arranged on one side, close to the furnace body assembly (16), of the furnace cover (12), the graphite electrode (131) is detachably connected with the water-cooling electrode (132), and the graphite electrode (131) at least partially stretches into the furnace body assembly (16);

the graphite electrode (131) is electrified to generate a high-temperature arc, and the water-cooled electrode (132) is electrified with liquid to realize cooling.

3. The quartz crucible preparation system according to claim 2, wherein the cover assembly (11) further comprises:

the heat preservation cover (14), heat preservation cover (14) along be on a parallel with direction of bell (12) set up in bell (12) be close to one side of furnace body subassembly (16), heat preservation cover (14) fixed connection in bell (12), graphite electrode (131) wear to locate heat preservation cover (14) and with heat preservation cover (14) swing joint.

4. A quartz crucible preparation system according to claim 3, characterized in that the cover assembly (11) further comprises:

the furnace cover is characterized by comprising a plurality of lifting structures (15), wherein the lifting structures (15) are arranged on one side, deviating from the heat preservation cover (14), of the furnace cover (12), any one of the lifting structures (15) is detachably connected with the water-cooling electrode (132), and the lifting structures (15) are used for driving the water-cooling electrode (132) to move in a direction close to the furnace body assembly (16) or in a direction far away from the furnace body assembly (16).

5. Quartz crucible preparation system according to claim 4, characterized in that the lifting structure (15) comprises:

the movable piece (151) is clamped on the periphery of the water-cooled electrode (132);

the support piece (156), the support piece (156) is arranged on one side of the movable piece (151) deviating from the furnace cover (12), and the support piece (156) is arranged on the periphery of the water-cooled electrode (132) and is movably connected with the water-cooled electrode (132);

a lift drive (152), the lift drive (152) being disposed at a first end of the support (156);

one end of the lead screw (153) is movably connected to the first end, the other end of the lead screw (153) penetrates through the movable piece (151) and is movably connected with the furnace cover (12), and the lead screw (153) is connected with the lifting driving piece (152);

under the condition that the lifting driving piece (152) drives the screw rod (153) to rotate, the movable piece (151) moves up and down along the screw rod (153), and then drives the water-cooled electrode (132) to move in a direction away from the furnace body assembly (16) or in a direction close to the furnace body assembly (16).

6. The quartz crucible preparation system of claim 5, wherein the lifting structure (15) further comprises:

the guide rod (155), one end of the guide rod (155) is fixedly connected to the second end of the supporting piece (156), the other end of the guide rod (155) penetrates through the movable piece (151) and is fixedly connected with the furnace cover (12), and the guide rod (155) is movably connected with the movable piece (151);

when the movable member (151) moves up and down along the screw (153), the movable member (151) also moves up and down along the guide rod (155);

wherein the first end and the second end are disposed opposite each other.

7. The quartz crucible preparation system of claim 1, wherein the furnace assembly (16) comprises:

the furnace comprises a first furnace body (121) and a second furnace body (122), wherein the first furnace body (121) and the second furnace body (122) are detachably connected, and the first furnace body (121) is clamped between the furnace cover (12) and the second furnace body (122);

the furnace body assembly (16) further comprises an air inlet hole (123) and an air outlet hole (124), any one of the air inlet hole (123) and the air outlet hole (124) is arranged in the first furnace body (121), the other one is arranged in the second furnace body (122), and the air inlet hole (123) and the air outlet hole (124) are used for achieving gas communication between the sealed cavity and the outside.

8. The quartz crucible preparation system of claim 7, further comprising a turning device comprising:

a boat truck support (46), wherein the boat truck support (46) is used for placing the second furnace body (122);

the rotary aerocar (20) is used for driving the aerocar support (46) to move towards the direction approaching the melting device (10) or to move away from the melting device (10);

the mould is arranged on the bottom surface of the second furnace body (122) and is used for placing quartz sand,

the heat preservation pieces (21) are arranged on the bottom surface of the second furnace body (122), and the heat preservation pieces (21) are arranged around the periphery of the die to form a cylinder;

during the melting of the quartz crucible, the electrode structure (13) extends at least partially into the insulating element (21) and is adjacent to the mould.

9. The quartz crucible preparation system of claim 1, further comprising:

a first lifting device (30), wherein the first lifting device (30) comprises a first driving piece (31) and a clamping piece (32), the clamping piece (32) is used for clamping at least part of the furnace body assembly (16), and the first driving piece (31) is used for driving the clamping piece (32) to drive at least part of the furnace body assembly (16) and the cover body assembly (11) to move along a direction perpendicular to the furnace cover (12);

the second lifting device (40), the second lifting device (40) comprises a bracket (41), a connecting piece (42), a fixed pulley block (43) and a counterweight component (44), the bracket (41) is erected on the periphery of the melting device (10) along the direction vertical to the furnace cover (12), the fixed pulley block (43) is arranged at the top end of the bracket (41), one end of the connecting piece (42) is connected with the furnace cover (12), and the other end of the connecting piece (42) bypasses the fixed pulley block (43) to be connected with the counterweight component (44);

when the first lifting device (30) drives the furnace body assembly (16) to move along the direction vertical to the furnace cover (12), the counterweight assembly (44) moves along the direction vertical to the furnace cover (12) to the opposite direction of the movement of the furnace body assembly (16).

10. The quartz crucible preparation system of claim 1, further comprising:

and the inert gas device is communicated with the furnace body assembly (16) and is used for filling inert gas into the sealed cavity.

11. The quartz crucible preparation system of claim 10, further comprising:

the cooling device is communicated with the furnace body assembly (16), and is used for cooling the heated inert gas extracted from the sealed cavity, and the cooled inert gas is filled into the sealed cavity after being cooled by the cooling device so as to realize the circulation cooling of the inside of the sealed cavity through the cooled inert gas.