Cooling mold for metal silicon production

Abstract

The utility model provides a cooling mold for metal silicon production. The cooling mold comprises a mold groove, a cooling groove and a stirring mechanism, the side wall of the die cavity is connected to the inner wall of the cooling tank through a connecting plate, the bottom of the die cavity and the bottom of the cooling tank are suspended, and cooling water for accelerating cooling of liquid silicon in the die cavity is filled in the cooling tank; the stirring mechanism is mounted at the bottom of the cooling tank and comprises stirring blades and a motor, the stirring blades are rotatably mounted at the inner bottom of the cooling tank, and the motor is mounted on a mounting plate arranged on the side wall of the cooling tank and is in transmission connection with the stirring blades. A water inlet pipe and a water outlet pipe are respectively mounted on two sides of the cooling tank and are respectively connected with the reservoir through a water pump. Liquid silicon is cast in the mold groove, cooling water in the cooling groove exchanges heat with high-temperature liquid silicon, the cooling speed of the liquid silicon is increased, the cooling efficiency of the liquid silicon is improved, the cooling water is stirred through the stirring mechanism, the cooling water flows, the cooling water can be cooled, and heat exchange with a silicon ingot is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of metal silicon production, in particular to a cooling mold for metal silicon production. Background Art

[0002] Metallic silicon is produced by mixing silica and a carbonaceous reducing agent in a certain proportion and then putting them into an electric furnace, where a reduction reaction occurs under the high temperature provided by electric energy. The production process of metallic silicon mainly includes raw material preparation, ingredient calculation, loading, power distribution, furnace pounding, unloading, refining, casting, crushing, and packaging. During casting, the smelted liquid silicon is poured into a cooling mold and waited for it to solidify into solid silicon to obtain the required metallic silicon. The current cooling mold allows the metallic silicon to cool and solidify naturally. This cooling method takes a long time and has low cooling efficiency. Utility Model Content

[0003] In order to overcome the problems existing in the background technology, the utility model provides a cooling mold for metal silicon production to solve the technical problem of low cooling efficiency of the existing cooling mold proposed in the background technology.

[0004] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0005] A cooling mold for producing metallic silicon comprises a mold groove 1, a cooling groove 2, and a stirring mechanism 3; the side wall of the mold groove 1 is connected to the inner wall of the cooling groove 2 through a connecting plate, the bottom of the mold groove 1 and the bottom of the cooling groove 2 are suspended in the air, and the cooling groove 2 is filled with cooling water for accelerating the cooling of liquid silicon in the mold groove 1; the stirring mechanism 3 is installed at the bottom of the cooling groove 2, and the stirring mechanism 3 comprises a stirring blade 31 and a motor 32, the stirring blade 31 is rotatably installed at the bottom of the cooling groove 2, and the motor 32 is installed on a mounting plate arranged on the side wall of the cooling groove 2, and is transmission-connected to the stirring blade 31.

[0006] Preferably, a water inlet pipe 4 and a water outlet pipe 5 are respectively installed on both sides of the cooling tank 2, and the water inlet pipe 4 and the water outlet pipe 5 are respectively connected to the water reservoir 7 through a water pump 6.

[0007] Preferably, a lifting rod 8 is installed in the mold groove 1 to facilitate demolding the silicon ingot. The lifting rod 8 is in a U-shaped structure and is embedded in a U-shaped groove 9 opened in the bottom surface and side wall of the mold groove 1. When the lifting rod 8 is installed in the U-shaped groove 9, it is flush with the inner wall of the mold groove 1. Through holes 10 are opened on the top of both sides of the lifting rod 8 to facilitate hooking.

[0008] Preferably, a drainage groove 11 is provided at the end of the mold groove 1 for facilitating pouring liquid silicon into the mold groove 1 .

[0009] The beneficial effects of the utility model are as follows: liquid silicon is cast in a mold groove, and the cooling water in the cooling groove exchanges heat with the high-temperature liquid silicon, thereby accelerating the cooling speed of the liquid silicon and improving its cooling efficiency; the cooling water is stirred by a stirring mechanism to make the cooling water flow, which can dissipate heat and cool down the cooling water, accelerate the heat exchange with the silicon ingot, and further improve the cooling efficiency of the silicon ingot. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0011] Figure 2 It is a structural diagram of the stirring mechanism.

[0012] Figure 3 It is a structural schematic diagram of the lifting rod. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings to facilitate the understanding of technicians.

[0014] like Figures 1-3 As shown, the utility model provides a cooling mold for metal silicon production, including a mold groove 1, a cooling groove 2, and a stirring mechanism 3; the side wall of the mold groove 1 is connected to the inner wall of the cooling groove 2 through a connecting plate, the bottom of the mold groove 1 and the bottom of the cooling groove 2 are suspended in the air, and the cooling groove 2 is filled with cooling water for accelerating the cooling of liquid silicon in the mold groove 1; the stirring mechanism 3 is installed at the bottom of the cooling groove 2, and the stirring mechanism 3 includes a stirring blade 31 and a motor 32, the stirring blade 31 is rotatably installed at the bottom of the cooling groove 2, and the motor 32 is installed on the mounting plate set on the side wall of the cooling groove 2, and is connected to the stirring blade 31 in a transmission manner. Liquid silicon is formed by smelting raw materials, and the liquid silicon is poured into the mold groove 1 for cooling and cooling. The cooling water in the cooling groove 2 exchanges heat with the high-temperature liquid silicon, which accelerates the cooling speed of the liquid silicon and improves its cooling efficiency. The stirring blade 31 is driven by the motor 32 of the stirring mechanism 3 to rotate, stir the cooling water, and make the cooling water flow, so that the cooling water can dissipate heat and cool down, accelerate the heat exchange with the silicon ingot, and further improve the cooling efficiency of the silicon ingot.

[0015] A water inlet pipe 4 and a water outlet pipe 5 are respectively installed on both sides of the cooling tank 2, and the water inlet pipe 4 and the water outlet pipe 5 are respectively connected to the water reservoir 7 through a water pump 6. When the cooling water in the cooling tank 2 cools the liquid silicon, the temperature of the cooling water rises, thereby reducing the cooling efficiency of the liquid silicon. The cooling water in the water reservoir 7 is pumped into the cooling tank 2 from the water inlet pipe 4 through the water pump 6, and the water with a higher temperature in the cooling tank 2 flows back to the water reservoir 7, so that the water in the cooling tank 2 circulates, avoiding too fast temperature rise and reducing the cooling efficiency of the silicon ingot. The cooling efficiency of the silicon ingot is improved through this structure.

[0016] A lifting rod 8 for facilitating the demoulding of the silicon ingot is installed in the mould cavity 1. The lifting rod 8 is of a U-shaped structure and is embedded in a U-shaped groove 9 formed in the inner bottom surface and the side wall of the mould cavity 1. When the lifting rod 8 is installed in the U-shaped groove 9, it is flush with the inner wall of the mould cavity 1. Through holes 10 for facilitating the hooking of the hooks are formed at the tops of both sides of the lifting rod 8. The lifting rod 8 can be embedded into the U-shaped groove 9 or pulled out from the U-shaped groove 9. Before casting, the lifting rod 8 is embedded into the U-shaped groove 9. After the silicon ingot is cooled and solidified, the hook of the crane is hung on the through holes 10 at both ends of the lifting rod 8, and the lifting rod 8 is pulled upwards, so as to demould the silicon ingot from the mould cavity 1.

[0017] A diversion groove 11 for facilitating the pouring of the liquid silicon into the mould cavity 1 is arranged at the end of the mould cavity 1. When casting the liquid silicon, the liquid silicon is poured into the diversion groove 11 and flows into the mould cavity 1 along the diversion groove 11, which facilitates the casting of the liquid silicon.

[0018] Working process:

[0019] After the raw materials are smelted to form liquid silicon, the liquid silicon is poured into the mould cavity 1 for cooling. The cooling water in the cooling tank 2 exchanges heat with the high-temperature liquid silicon, accelerating the cooling speed of the liquid silicon and improving its cooling efficiency. The motor 32 of the stirring mechanism 3 drives the stirring blade 31 to rotate, stirring the cooling water to make the cooling water flow, which can dissipate heat and cool down the cooling water, accelerating the heat exchange with the silicon ingot and further improving the cooling efficiency of the silicon ingot. The cooling water in the water storage tank 7 is pumped into the cooling tank 2 from the water inlet pipe 4 through the water pump 6, and the water with a higher temperature in the cooling tank 2 flows back to the water storage tank 7, so that the cooling water in the cooling tank 2 circulates, preventing the temperature from rising too fast and reducing the cooling efficiency of the silicon ingot. After the silicon ingot is cooled and solidified, the hook of the crane is hung on the through holes 10 at both ends of the lifting rod 8, and the lifting rod 8 is pulled upwards, so as to demould the silicon ingot from the mould cavity 1 and then crush it.

[0020] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in terms of form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A cooling mold for metal silicon production, characterized in that: The invention comprises a mold groove (1), a cooling groove (2), and a stirring mechanism (3); the side wall of the mold groove (1) is connected to the inner wall of the cooling groove (2) through a connecting plate, the bottom of the mold groove (1) and the bottom of the cooling groove (2) are suspended in the air, and the cooling groove (2) is filled with cooling water for accelerating the cooling of liquid silicon in the mold groove (1); the stirring mechanism (3) is installed at the bottom of the cooling groove (2), and the stirring mechanism (3) comprises a stirring blade (31) and a motor (32); the stirring blade (31) is rotatably installed at the bottom of the cooling groove (2), and the motor (32) is installed on a mounting plate arranged on the side wall of the cooling groove (2) and is transmission-connected to the stirring blade (31).

2. A cooling mold for metal silicon production according to claim 1, characterized in that: A water inlet pipe (4) and a water outlet pipe (5) are respectively installed on both sides of the cooling tank (2); the water inlet pipe (4) and the water outlet pipe (5) are respectively connected to a water reservoir (7) via a water pump (6).

3. A cooling mold for metal silicon production according to claim 1 or 2, characterized in that: A lifting rod (8) is installed in the mold groove (1) to facilitate demolding of the silicon ingot. The lifting rod (8) is in a U-shaped structure and is embedded in a U-shaped groove (9) provided on the bottom surface and side wall of the mold groove (1). When the lifting rod (8) is installed in the U-shaped groove (9), it is flush with the inner wall of the mold groove (1). Through holes (10) are provided on the top of both sides of the lifting rod (8) to facilitate hooking.

4. A cooling mold for metal silicon production according to claim 3, characterized in that: The end of the mold groove (1) is provided with a drainage groove (11) for facilitating pouring liquid silicon into the mold groove (1).

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