Smelting equipment for silicon ingot production

Abstract

The utility model relates to the technical field of silicon ingot processing, and discloses smelting equipment for silicon ingot production, which comprises a mounting seat, a smelting furnace body fixed on the mounting seat, a sealing cover movably arranged at the top of the smelting furnace body, a stirring mechanism rotatably arranged at the bottom of the sealing cover and movably arranged in the smelting furnace body, a material guide pipe penetrates through the side face of the smelting furnace body, and the top of the material guide pipe communicates with a material storage box. The sealing cover is movably arranged on the smelting furnace body, so that the sealing cover does not need to be lifted manually, and the smelting furnace is convenient to use; by arranging the material storage box and the material guide pipe, materials can be conveniently added into the smelting furnace body in the smelting process, the leakproofness in the smelting furnace body can be guaranteed while the materials are added, and the practicability is high; the stirring mechanism is arranged in the smelting furnace body, raw materials such as silicon ingots can be scattered through rotation of the stirring mechanism, the raw materials such as the silicon ingots are prevented from being mixed together, and therefore the silicon ingots can be smelted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon ingot processing and discloses a smelting device for silicon ingot production. Background Art

[0002] Silicon ingots are mainly products made by directional solidification of silicon materials. Their main chemical composition is monocrystalline silicon. They are industrial products with a fixed shape composed of monocrystalline silicon. Silicon ingots contain impurities such as iron, aluminum, and calcium, which need to be refined and purified to reduce the impurities. Silicon ingots are purified through a series of processes to produce polycrystalline silicon and monocrystalline silicon for use in the photovoltaic industry and the electronics industry. Crystalline silicon cells are mainly used in solar rooftop power stations, commercial power stations, and urban power stations with high land costs. They are currently the most technologically mature and widely used solar photovoltaic products, accounting for more than 80% of the world's photovoltaic market, and their demand for silicon ingots is growing significantly. In the preparation process of silicon ingots, purification is a necessary link, and smelting equipment is one of the indispensable equipment in the silicon ingot purification process.

[0003] When melting and purifying silicon ingots, the melting crucible needs to be sealed to reduce heat loss. At the same time, materials need to be added to the melting equipment. During the adding process, the heat generated by the pot of the melting device during the melting process is easily dissipated from the top, affecting the melting efficiency and quality of the silicon ingot. There are limitations. At the same time, during the melting process, silicon ingots and other raw materials are easily mixed together, resulting in poor melting effect.

[0004] Chinese utility model patent CN210826444U discloses a melting device for producing polycrystalline silicon ingots, which belongs to the technical field of melting devices, including a base, a support rod fixedly connected to the top of the base in the vertical direction, and the number of the support rods is two, a rotating shaft is installed on the top of the support rod, the support rod is movably connected to a frame through the rotating shaft, an annular slide is fixedly connected to the bottom of the frame in the horizontal direction, a first connecting rod is slidably connected to the inner side wall of the annular slide in the horizontal direction, and the number of the first connecting rods is two, the annular slide is movably connected to a melting crucible through the first connecting rod, and the frame is movably connected to a top cover through a second connecting rod, the melting crucible can be sealed during the melting process, heat loss can be reduced, and the melting speed can be increased, the motor at the bottom of the frame can drive the rotation of the melting crucible through the second bearing, the heat conduction rate inside the melting crucible is increased, the melting of silicon material is accelerated, and the melting efficiency and quality in the production process of polycrystalline silicon ingots are further improved.

[0005] Although the above-mentioned silicon ingot melting device can seal the melting crucible and reduce heat loss, it is impossible to add materials to the melting equipment during the melting process. At the same time, the raw materials in the melting equipment are easily mixed together, and uniform heating cannot be guaranteed, resulting in low melting efficiency. Utility Model Content

[0006] In view of the defects in the prior art, the utility model provides a smelting equipment for silicon ingot production, which prevents the addition of materials during the smelting process of the silicon ingots and prevents the loss of heat. At the same time, the silicon ingots can be effectively melted to prevent the silicon ingot raw materials from mixing together.

[0007] In order to solve the above technical problems, the utility model proposes the following technical solutions:

[0008] A smelting device for silicon ingot production comprises a mounting seat, a smelting furnace body is fixed on the mounting seat, a sealing cover is movably provided on the top of the smelting furnace body, a stirring mechanism is rotatably provided on the bottom of the sealing cover, the stirring mechanism is movably arranged in the smelting furnace body, a material guide pipe is penetrated through the side of the smelting furnace body, and a material storage box is connected to the top of the material guide pipe.

[0009] Furthermore, a column is fixedly mounted on the mounting seat, a linear motor is mounted on the column, a connecting plate is slidably mounted on the linear motor, and the connecting plate is connected to the cover.

[0010] Furthermore, a sealing cover plate is movably mounted on the material storage box, a pull-out plate is movably mounted on the material guide pipe, a sealing groove is mounted inside the material guide pipe, and an end of the pull-out plate is movably mounted in the sealing groove.

[0011] Furthermore, a discharge pipe is installed through the bottom of the smelting furnace body, and a valve is installed on the discharge pipe.

[0012] Furthermore, a motor is installed on the cover, and an output end of the motor is connected to the stirring mechanism.

[0013] Furthermore, the stirring mechanism includes a rotating rod, a mixing rod and an auxiliary stirring rod, the rotating rod is connected to the output end of the motor, the mixing rod is installed on the rotating rod, and the auxiliary stirring rod is installed at the bottom of the rotating rod.

[0014] Furthermore, a sealing ring is installed at the bottom of the sealing cover, and the sealing ring is sealed and connected to the smelting furnace body.

[0015] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0016] The utility model arranges the sealing cover on the smelting furnace body, thereby eliminating the need for manual lifting of the sealing cover and facilitating use; by arranging a material storage box and a material guide pipe, it is convenient to add materials to the smelting furnace body during the smelting process, and the airtightness of the smelting furnace body can be ensured while adding materials, and the utility model has high practicality; by arranging a stirring mechanism in the smelting furnace body, raw materials such as silicon ingots can be broken up by the rotation of the stirring mechanism to prevent the raw materials such as silicon ingots from being mixed together, thereby facilitating the smelting of the silicon ingots and achieving high smelting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is a cross-sectional view of the material guide pipe in the utility model;

[0020] Figure 3 It is a schematic diagram of the connection between the sealing cover and the stirring mechanism in the utility model.

[0021] Reference numerals:

[0022] 1-mounting seat, 2-column, 3-smelting furnace body, 4-linear motor, 5-storage box, 6-sealing cover plate, 7-material guide pipe, 8-connecting plate, 9-pull-out plate, 10-sealing cover, 11-motor, 12-discharging pipe, 13-valve, 14-sealing groove, 15-sealing ring, 16-rotating rod, 17-mixing rod, 18-auxiliary stirring rod. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0024] See also Figure 1-3 As shown, a smelting equipment for silicon ingot production includes a mounting base 1, a smelting furnace body 3 is fixed on the mounting base 1, a cover 10 is movably provided on the top of the smelting furnace body 3, a stirring mechanism is rotatably provided at the bottom of the cover 10, the stirring mechanism is movably arranged in the smelting furnace body 3, a material guide pipe 7 is penetrated on the side of the smelting furnace body 3, and a material storage box 5 is connected to the top of the material guide pipe 7.

[0025] In actual use, by movably setting the cover 10 on the smelting furnace body 3, there is no need to manually lift the cover 10, which is convenient for use; by setting the material storage box 5 and the material guide pipe 7, it is convenient to add materials to the smelting furnace body 3 during the smelting process, and the airtightness of the smelting furnace body 3 can be ensured while adding materials, which is highly practical; by setting a stirring mechanism in the smelting furnace body 3, the silicon ingots and other raw materials can be broken up by the rotation of the stirring mechanism to prevent the silicon ingots and other raw materials from mixing together, thereby facilitating the smelting of the silicon ingots and achieving high smelting efficiency.

[0026] In this embodiment, a column 2 is fixedly mounted on the mounting seat 1, a linear motor 4 is mounted on the column 2, a connecting plate 8 is slidably mounted on the linear motor 4, and the connecting plate 8 is connected to the cover 10; specifically, the connecting plate 8 can be driven to rise and fall by the linear motor 4, thereby facilitating the lifting and lowering of the cover 10, without the need for manual lifting of the cover 10, and the practicability is high.

[0027] In this embodiment, a sealing cover plate 6 is movably installed on the material storage box 5, a pull-out plate 9 is movably installed on the material guide pipe 7, a sealing groove 14 is installed inside the material guide pipe 7, and the end of the pull-out plate 9 is movably installed in the sealing groove 14; specifically, the sealing cover plate 6 can be arranged to facilitate the airtightness of the material storage box 5 to prevent the loss of hot air, and by pulling out the pull-out plate 9, the material in the material storage box 5 can enter the smelting furnace body 3 for smelting. At the same time, the sealing groove 14 is arranged to facilitate the pull-out plate 9 to play an isolation role.

[0028] In this embodiment, a discharge pipe 12 is installed through the bottom of the smelting furnace body 3 , and a valve 13 is installed on the discharge pipe 12 ; specifically, the discharge work can be carried out through the discharge pipe 12 .

[0029] In this embodiment, a motor 11 is installed on the cover 10, and the output end of the motor 11 is connected to the stirring mechanism. The stirring mechanism includes a rotating rod 16, a mixing rod 17 and an auxiliary stirring rod 18. The rotating rod 16 is connected to the output end of the motor 11, the mixing rod 17 is installed on the rotating rod 16, and the auxiliary stirring rod 18 is installed at the bottom of the rotating rod 16; specifically, the stirring mechanism can be driven to rotate by starting the motor 11, so that the materials in the smelting furnace body 3 can be dispersed to prevent them from piling up and affecting the smelting effect.

[0030] Among them, a sealed bearing is installed on the output end of the motor 11, the outer ring of the sealed bearing is connected to the cover 10, and the inner ring of the sealed bearing is connected to the output end of the motor, so that the leakage of hot air can be prevented when the motor 11 is started. Ensuring the sealing of the connection by means of a sealed bearing belongs to the prior art, so it is not described in detail in the specification and the drawings of the specification.

[0031] In this embodiment, a sealing ring 15 is installed at the bottom of the cover 10, and the cover 10 is sealed and connected to the smelting furnace body 3 through the sealing ring 15; specifically, the sealing ring 15 is provided to ensure the airtightness of the connection between the cover 10 and the smelting furnace body 3.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A smelting device for producing silicon ingots, comprising a mounting seat (1), characterized in that: A smelting furnace body (3) is fixed on the mounting seat (1), a cover (10) is movably provided on the top of the smelting furnace body (3), a stirring mechanism is rotatably provided on the bottom of the cover (10), the stirring mechanism is movably provided in the smelting furnace body (3), a material guide pipe (7) is provided through the side of the smelting furnace body (3), and a material storage box (5) is connected to the top of the material guide pipe (7).

2. A smelting equipment for silicon ingot production according to claim 1, characterized in that: A column (2) is fixedly mounted on the mounting seat (1), a linear motor (4) is mounted on the column (2), a connecting plate (8) is slidably mounted on the linear motor (4), and the connecting plate (8) is connected to the sealing cover (10).

3. The smelting equipment for silicon ingot production according to claim 1, characterized in that: A sealing cover plate (6) is movably mounted on the material storage box (5), a pull-out plate (9) is movably mounted on the material guide pipe (7), a sealing groove (14) is mounted inside the material guide pipe (7), and an end of the pull-out plate (9) is movably mounted in the sealing groove (14).

4. The smelting equipment for silicon ingot production according to claim 1, characterized in that: A discharge pipe (12) is installed through the bottom of the smelting furnace body (3), and a valve (13) is installed on the discharge pipe (12).

5. The smelting equipment for silicon ingot production according to claim 1, characterized in that: A motor (11) is installed on the sealing cover (10), and an output end of the motor (11) is connected to a stirring mechanism.

6. A smelting equipment for silicon ingot production according to claim 5, characterized in that: The stirring mechanism comprises a rotating rod (16), a mixing rod (17) and an auxiliary stirring rod (18); the rotating rod (16) is connected to the output end of the motor (11); the mixing rod (17) is mounted on the rotating rod (16); and the auxiliary stirring rod (18) is mounted at the bottom of the rotating rod (16).

7. The smelting equipment for silicon ingot production according to claim 1, characterized in that: A sealing ring (15) is installed at the bottom of the sealing cover (10), and the sealing cover (10) is sealed and connected to the smelting furnace body (3) via the sealing ring (15).

Images