Polycrystalline silicon purification ingot furnace

Abstract

The utility model provides a polycrystalline silicon purification ingot casting furnace, which belongs to the technical field of polycrystalline silicon purification ingot casting, and comprises a support frame, a purification furnace body is arranged at the top of the support frame, a heating coil is arranged in the purification furnace body, a guide hopper is arranged in the heating coil, and the guide hopper is arranged in the purification furnace body. Two electric air cylinders are installed on the surface of the supporting frame, a reinforcing plate is installed on the surfaces of the extending ends of the electric air cylinders, a lower furnace cover is fixedly connected to the surface of the reinforcing plate, and an ingot casting shell is installed on the top of the lower furnace cover. When the purification furnace body and the heating coil heat polycrystalline silicon, hot air is conveyed to the conveying assembly, when the conveying assembly conveys the polycrystalline silicon in the containing hopper, the polycrystalline silicon is preheated at the moment, then the preheated polycrystalline silicon enters the purification furnace body through the guide pipe, and then the polycrystalline silicon is purified. After the polycrystalline silicon is melted, the polycrystalline silicon is formed on the surface of an ingot casting shell, and then the ingot casting shell is discharged through an electric air cylinder.

Description

Technical Field

[0001] The utility model belongs to the technical field of polysilicon purification ingot casting, and particularly relates to a polysilicon purification ingot casting furnace. Background Art

[0002] Polysilicon is a silicon material composed of multiple crystal grains. It is a commonly used material in the semiconductor industry, widely used in solar cells, integrated circuits, optoelectronic devices, and other fields. Polysilicon purification and casting furnaces are used to produce the high-purity polysilicon ingots required for semiconductor devices such as solar cells.

[0003] The traditional polysilicon production process suffers from high energy consumption, high pollutant emissions, and unstable output purity. Existing polysilicon ingot furnaces require polysilicon to be placed into the furnace before heating begins, making it inconvenient to preheat the polysilicon. This consumes a large amount of heat and increases the time required to purify the ingots. Utility Model Content

[0004] The purpose of the utility model is to provide a polysilicon purification ingot furnace, aiming to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A polysilicon purification ingot casting furnace comprises: a support frame, a purification furnace body is installed on the top of the support frame, a heating coil is installed inside the purification furnace body, a guide bucket is installed inside the heating coil, two electric cylinders are installed on the surface of the support frame, a reinforcement plate is installed on the surface of the extended end of the electric cylinder, a lower furnace cover is fixedly connected to the surface of the reinforcement plate, an ingot shell is installed on the top of the lower furnace cover, a control panel is installed on the surface of the support frame, a placement bucket is installed on the surface of one side of the purification furnace body, a conveying assembly for conveying polysilicon is installed on the surface of the purification furnace body, a guide pipe is installed on the top of the purification furnace body, and a plurality of air guide pipes are installed inside the purification furnace body.

[0007] As a preferred solution of the present invention, the size of the lower furnace cover is adapted to the bottom of the purification furnace body, and the cross section of the top of the ingot shell is the same as the cross section of the bottom of the guide bucket.

[0008] As a preferred solution of the present invention, a plurality of reinforcement rods are installed on the surface of the electric cylinder, and two reinforcement plates are respectively slidably connected to the surfaces of the reinforcement rods on both sides.

[0009] As a preferred solution of the present invention, the conveying assembly includes a feed pipe installed on one side of the purification furnace body, and the feed pipe extends to the interior of the placement bucket. The interior of the feed pipe is rotatably connected to a feed shaft, and a screw dragon is installed on the surface of the feed shaft. A servo motor is installed on the top of the feed pipe, and the output shaft of the servo motor is fixedly connected to one end of the feed shaft.

[0010] As a preferred solution of the present invention, one end of the guide tube extends to the interior of the purification furnace body, and the other end of the guide tube passes through the feed pipe and is connected to the feed pipe, and multiple air guide tubes are connected to the feed pipe.

[0011] As a preferred solution of the present invention, a groove is provided on the surface of the feeding pipe at one end where the bucket is placed.

[0012] As a preferred solution of the present invention, the control panel is electrically connected to the heating coil, the electric cylinder and the servo motor respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This solution uses the setting of an air guide pipe to transport hot air to the conveying assembly when the purification furnace body and the heating coil heat the polysilicon. When the conveying assembly transports the polysilicon placed inside the bucket, the polysilicon will be preheated. The preheated polysilicon then enters the interior of the purification furnace body through the guide pipe. After the polysilicon is melted, it will be formed on the surface of the ingot shell, and then the ingot shell will be unloaded by the electric cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached figure:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 A cross-sectional view of the structure of the present invention from a first perspective;

[0019] Figure 3 A cross-sectional view of the structure of the present invention from a second viewing angle;

[0020] Figure 4 It is a cross-sectional view of the structure of the utility model from a third perspective.

[0021] In the figure: 1. Purification furnace body; 2. Heating coil; 3. Guide bucket; 4. Lower furnace cover; 5. Ingot shell; 6. Support frame; 7. Electric cylinder; 8. Reinforcement rod; 9. Reinforcement plate; 10. Control panel; 11. Placement bucket; 12. Conveying assembly; 1201. Feed pipe; 1202. Feed shaft; 1203. Auger; 1204. Servo motor; 13. Guide tube; 14. Air guide tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] Example

[0024] See also Figure 1-4 , the technical solutions provided in this embodiment are as follows:

[0025] A polysilicon purification ingot furnace, comprising: a support frame 6, a purification furnace body 1 is installed on the top of the support frame 6, a heating coil 2 is installed inside the purification furnace body 1, a guide bucket 3 is installed inside the heating coil 2, two electric cylinders 7 are installed on the surface of the support frame 6, a reinforcement plate 9 is installed on the surface of the extended end of the electric cylinder 7, a lower furnace cover 4 is fixedly connected to the surface of the reinforcement plate 9, an ingot shell 5 is installed on the top of the lower furnace cover 4, a control panel 10 is installed on the surface of the support frame 6, a placement bucket 11 is installed on the surface of one side of the purification furnace body 1, and a device for conveying polysilicon is installed on the surface of the purification furnace body 1. The conveying component 12 is provided with a guide tube 13 on the top of the purification furnace body 1, and a plurality of air guide tubes 14 are provided inside the purification furnace body 1. Through the setting of the air guide tube 14, when the purification furnace body 1 and the heating coil 2 heat the polysilicon, the hot air is conveyed to the conveying component 12. When the conveying component 12 conveys the polysilicon placed inside the bucket 11, the polysilicon will be preheated at this time. Subsequently, the preheated polysilicon enters the interior of the purification furnace body 1 through the guide tube 13. After the polysilicon is melted, it will be formed on the surface of the ingot shell 5, and then the ingot shell 5 is discharged by the electric cylinder 7.

[0026] Specifically, the size of the lower furnace cover 4 is adapted to the bottom of the purification furnace body 1 , and the cross section of the top of the ingot shell 5 is the same as the cross section of the bottom of the guide hopper 3 .

[0027] In a specific embodiment of the present utility model, the size of the lower furnace cover 4 is adapted to the bottom of the purification furnace body 1, thereby increasing the sealing effect of the lower furnace cover 4 on the purification furnace body 1, thereby reducing the probability of hot gas leakage inside the purification furnace body 1. The cross-section of the top of the ingot shell 5 is the same as the cross-section of the bottom of the guide bucket 3, which facilitates the introduction of polysilicon into the interior of the ingot shell 5.

[0028] Specifically, a plurality of reinforcement rods 8 are installed on the surface of the electric cylinder 7 , and two reinforcement plates 9 are slidably connected to the surfaces of the reinforcement rods 8 on both sides.

[0029] In a specific embodiment of the present invention, by providing the reinforcement rod 8 , the stability of the reinforcement plate 9 can be increased when the reinforcement plate 9 moves, thereby facilitating the unloading of the ingot shell 5 .

[0030] Specifically, the conveying assembly 12 includes a feed pipe 1201 installed on one side of the purification furnace body 1, and the feed pipe 1201 extends to the interior of the placement bucket 11. The interior of the feed pipe 1201 is rotatably connected to a feed shaft 1202, and a screw 1203 is installed on the surface of the feed shaft 1202. A servo motor 1204 is installed on the top of the feed pipe 1201, and the output shaft of the servo motor 1204 is fixedly connected to one end of the feed shaft 1202.

[0031] In a specific embodiment of the present invention, when the servo motor 1204 is started, its output shaft drives the feeding shaft 1202 , and the feeding shaft 1202 rotates to drive the auger 1203 to rotate, thereby transporting the polysilicon.

[0032] Specifically, one end of the guide tube 13 extends to the interior of the purification furnace body 1 , and the other end of the guide tube 13 passes through the material delivery pipe 1201 and is in communication with the material delivery pipe 1201 . A plurality of air guide tubes 14 are in communication with the material delivery pipe 1201 .

[0033] In a specific embodiment of the present invention, the two ends of the guide tube 13 are respectively connected to the purification furnace body 1 and the feed pipe 1201, thereby facilitating the transportation of polysilicon, and the air guide tube 14 is connected to the feed pipe 1201, thereby facilitating the transportation of hot gas.

[0034] Specifically, a groove is formed on the surface of the feeding pipe 1201 at one end of the placing bucket 11.

[0035] In a specific embodiment of the present invention, the provision of the groove facilitates the polysilicon in the hopper 11 to enter the interior of the delivery pipe 1201 .

[0036] Specifically, the control panel 10 is electrically connected to the heating coil 2 , the electric cylinder 7 and the servo motor 1204 , respectively.

[0037] In a specific embodiment of the present invention, the control panel 10 is provided to facilitate the control of the heating coil 2 , the electric cylinder 7 and the servo motor 1204 .

[0038] Working principle: When the purification furnace body 1 and the heating coil 2 are heating, the air guide pipe 14 conveys the hot air to the conveying component 12, and the servo motor 1204 is started at this time. The output shaft of the servo motor 1204 drives the feed shaft 1202, and the feed shaft 1202 rotates to drive the auger 1203 to rotate, thereby conveying the polysilicon placed in the bucket 11. At this time, the polysilicon will be preheated, and then the preheated polysilicon enters the interior of the purification furnace body 1 through the guide pipe 13. After the polysilicon is melted, it will be formed on the surface of the ingot shell 5, and then the ingot shell 5 is unloaded by the electric cylinder 7.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A polysilicon purification ingot furnace, characterized in that: include: A support frame (6) is provided on the top of the support frame (6), a purification furnace body (1) is installed on the inside of the purification furnace body (1), a heating coil (2) is installed on the inside of the heating coil (2), a guide bucket (3) is installed on the surface of the support frame (6), two electric cylinders (7) are installed on the surface of the extended end of the electric cylinder (7), a reinforcement plate (9) is installed on the surface of the reinforcement plate (9), a lower furnace cover (4) is fixedly connected to the surface of the reinforcement plate (9), an ingot shell (5) is installed on the top of the lower furnace cover (4), a control panel (10) is installed on the surface of the support frame (6), a placement bucket (11) is installed on the surface of one side of the purification furnace body (1), a conveying assembly (12) for conveying polysilicon is installed on the surface of the purification furnace body (1), a guide pipe (13) is installed on the top of the purification furnace body (1), and a plurality of air guide pipes (14) are installed inside the purification furnace body (1).

2. The polysilicon purification ingot furnace according to claim 1, characterized in that: The size of the lower furnace cover (4) is adapted to the bottom of the purification furnace body (1), and the cross section of the top of the ingot shell (5) is the same as the cross section of the bottom of the guide bucket (3).

3. The polysilicon purification ingot furnace according to claim 2, characterized in that: A plurality of reinforcing rods (8) are installed on the surface of the electric cylinder (7), and two reinforcing plates (9) are respectively slidably connected to the surfaces of the reinforcing rods (8) on both sides.

4. The polysilicon purification ingot furnace according to claim 3, characterized in that: The conveying assembly (12) includes a feed pipe (1201) installed on one side of the purification furnace body (1), and the feed pipe (1201) extends to the inside of the placement bucket (11), the feed pipe (1201) is rotatably connected to the inside of the feed shaft (1202), the surface of the feed shaft (1202) is installed with an auger (1203), and a servo motor (1204) is installed on the top of the feed pipe (1201), and the output shaft of the servo motor (1204) is fixedly connected to one end of the feed shaft (1202).

5. The polysilicon purification ingot furnace according to claim 4, characterized in that: One end of the guide tube (13) extends to the interior of the purification furnace body (1), and the other end of the guide tube (13) passes through the feed pipe (1201) and is connected to the feed pipe (1201), and the plurality of air guide tubes (14) are connected to the feed pipe (1201).

6. The polysilicon purification ingot furnace according to claim 5, characterized in that: The surface of the material delivery pipe (1201) located at one end of the placement bucket (11) is provided with a groove.

7. The polysilicon purification ingot furnace according to claim 6, characterized in that: The control panel (10) is electrically connected to the heating coil (2), the electric cylinder (7) and the servo motor (1204) respectively.

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