Cold material breaking device for silicon material processing

Abstract

This utility model discloses a cold material crushing device for silicon material processing, relating to the technical field of silicon material production equipment. It includes a shell with a feed inlet at its top and a first tilting plate at the bottom. A storage box is located on one side wall of the top of the shell, with a liquid nitrogen inlet pipe penetrating its top. Multiple aeration holes are located at the junction of the storage box and the side wall of the shell. An insulation box is located on the other side wall of the top of the shell, with an electric heater installed inside. A second tilting plate is located in the middle of the inner side of the shell, and an exhaust box is located on one side wall in the middle of the shell. This utility model, through a series of structural features, prevents the crushing rollers from jamming, thereby improving the crushing efficiency of cold silicon material and reducing the probability of dust generated during crushing causing environmental pollution, making it more environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the technical field of silicon material production equipment, specifically a cold material crushing device for silicon material processing. Background Technology

[0002] Cold silicon material refers to semi-solid or solid silicon material formed after cooling during silicon material processing. It usually needs to be further crushed, ground or recycled. It is commonly found in semiconductor silicon wafer production, solar cell manufacturing and silicon-based material processing. It needs to be processed by crushing equipment for reuse.

[0003] However, existing cold material crushing devices for silicon material processing typically crush cold silicon materials by directly crushing them through rotating double rollers. Due to the shape and size of the silicon material itself and its position on the crushing rollers, it is difficult to crush or the rollers may jam, thus affecting the crushing efficiency of the cold silicon material. In addition, existing cold silicon materials have a lot of floating dust on their surface. When the cold silicon material is crushed by the extrusion rollers, the floating dust on the surface floats upward and then floats out of the device along the unsealed feed inlet, which can easily cause environmental pollution and is not environmentally friendly. Utility Model Content

[0004] The purpose of this invention is to provide a cold material crushing device for silicon material processing to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cold material crushing device for silicon material processing, comprising a shell, a feed inlet at the top of the shell, a first tilting plate at the bottom of the feed inlet, a storage box on one side wall of the top of the shell, a liquid nitrogen inlet pipe penetrating the top of the storage box, multiple aeration holes at the junction of the storage box and the side wall of the shell, a heat preservation box on the other side wall of the top of the shell, an electric heater installed inside the heat preservation box, a second tilting plate in the middle of the inner side of the shell, an air outlet box on one side wall of the middle of the shell, a negative pressure fan installed at the bottom of the side wall of the air outlet box, an installation box in the middle of the front of the shell, a rotary motor installed on the front of the installation box, two crushing rollers at the bottom of the second tilting plate, and a discharge port at the bottom of the front of the shell.

[0006] Preferably, a first rotary motor and a second rotary motor are respectively installed on the top of the front side of the outer casing, and a rotating shaft passes through the middle of both the first flip plate and the second flip plate.

[0007] Preferably, the output ends of the first rotary motor and the second rotary motor are respectively engaged with the rotating shaft, and the first flip plate and the second flip plate are rotatably connected to the outer casing through the first rotary motor and the second rotary motor, respectively.

[0008] Preferably, an air outlet is provided at the connection between the air outlet box and the outer shell, and a filter screen is provided in the middle of the inner side of the air outlet box.

[0009] Preferably, a gear set is provided on the inner side of the mounting box. The gear set includes two spur gears, which are respectively fixedly connected to one end of the two crushing roller shafts. The output end of the rotary motor is engaged with one end of the roller shaft of one of the crushing rollers.

[0010] Preferably, two baffles are fixedly connected to the top of the inner wall of the outer shell, and the bottom surfaces of the first flip plate and the second flip plate are respectively attached to the top surfaces of the two baffles.

[0011] Preferably, the aeration holes and the electric heater are located on both sides of the area enclosed by the first and second flip plates, respectively.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This cold material crushing device for silicon material processing, through the installation of liquid nitrogen inlet pipe, storage box, aeration hole and electric heater, ensures that after the cold silicon material falls into the device, one side of the cold silicon material is subjected to high temperature and the other side is in an extremely low temperature state. This causes the cold silicon material to break apart from the inside due to the temperature difference between the two sides, making it easier for large-volume silicon material to be crushed by the subsequent crushing rollers. At the same time, it makes it less likely for the crushing rollers to jam, thereby improving the crushing efficiency of the cold silicon material.

[0014] 2. This cold material crushing device for silicon material processing, through the setting of a first flip plate and a second flip plate, allows the feed inlet at the top of the device to close as the first flip plate flips and resets after the cold silicon material enters the device. At the same time, during the crushing step of the cold silicon material, the second flip plate is also in a horizontally closed state. In conjunction with the air outlet box and negative pressure fan, the floating dust generated during the crushing process can be sucked into the air outlet box and adsorbed on the filter screen, thereby reducing the probability of floating dust generated during crushing floating out of the device and causing environmental pollution, making it more environmentally friendly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the air outlet box and electric heater of this utility model;

[0017] Figure 3 This is a schematic diagram of the first and second flip plates of this utility model.

[0018] Figure 4This is a schematic diagram of the liquid nitrogen inlet pipe and negative pressure fan structure of this utility model.

[0019] In the diagram: 1. Feed inlet; 2. First tilting plate; 3. Liquid nitrogen inlet pipe; 4. Storage box; 5. First rotary motor; 6. Insulation box; 7. Second rotary motor; 8. Air outlet box; 9. Negative pressure fan; 10. Rotary motor; 11. Mounting box; 12. Discharge port; 13. Outer shell; 14. Rotating shaft; 15. Baffle bar; 16. Aeration hole; 17. Second tilting plate; 18. Electric heater; 19. Filter screen; 20. Gear set; 21. Crushing roller. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4As shown, the cold material crushing device for silicon material processing in this embodiment includes a shell 13. The top of the shell 13 has a feed inlet 1, and the bottom of the feed inlet 1 has a first flip plate 2. A storage box 4 is provided on one side wall of the top of the shell 13. A liquid nitrogen inlet pipe 3 passes through the top of the storage box 4. Multiple aeration holes 16 are provided at the junction of the storage box 4 and the side wall of the shell 13. A heat preservation box 6 is provided on the other side wall of the top of the shell 13. An electric heater 18 is installed inside the heat preservation box 6. A second flip plate 17 is provided in the middle of the inner side of the shell 13. An air outlet box 8 is provided on one side wall of the middle of the shell 13. A negative pressure fan 9 is installed at the bottom of the side wall of the air outlet box 8. An installation box 11 is provided in the middle of the front of the shell 13. A rotary motor 10 is installed on the front of the installation box 11. Two crushing rollers 21 are provided at the bottom of the second flip plate 17. A discharge port 12 is provided at the bottom of the front of the shell 13.

[0024] Specifically, the feed inlet 1 is embedded in the top of the outer shell 13, allowing the silicon cold material falling into the feed inlet 1 to stay at the top of the outer shell 13. The first flip plate 2, serving as the bottom of the feed inlet 1, supports the silicon cold material falling into the feed inlet 1 for subsequent pretreatment. The storage box 4 provides sufficient space for the liquid nitrogen entering from the liquid nitrogen inlet pipe 3, allowing the liquid nitrogen to vaporize at room temperature and transfer its cooling power to the silicon cold material inside the outer shell 13. The aeration holes 16 allow the vaporized liquid nitrogen to disperse more widely into the outer shell 13, thereby achieving the cooling effect of liquid nitrogen on the silicon cold material. However, the function of the heat preservation box 6 is to prevent the high temperature generated by the electric heater 18 from dissipating through the outer wall of the outer shell 13, thereby facilitating the transfer of heat to the silicon material. The function of the second flip plate 17 is to support the cold silicon material, so that the cold silicon material can be fully heated or frozen, thereby accelerating the thermal expansion and contraction of the cold silicon material, which is more conducive to the subsequent crushing of the silicon material and improving the crushing efficiency of the silicon material. The function of the air outlet box 8 is to allow the dust generated during the crushing of the silicon material to be smoothly drawn into the filter screen 19 and intercepted and filtered, thereby reducing the probability of dust from the silicon material crushing process escaping from the device, making it more environmentally friendly.

[0025] Furthermore, a first rotary motor 5 and a second rotary motor 7 are respectively installed on the top of the front side of the housing 13. A rotating shaft 14 passes through the middle of the first flip plate 2 and the second flip plate 17. The first rotary motor 5 and the second rotary motor 7 are controlled by a controller, and the first rotary motor 5 and the second rotary motor 7 rotate in opposite directions, so that the first flip plate 2 and the second flip plate 17 can transport silicon material into the housing 13.

[0026] Furthermore, the output ends of the first rotary motor 5 and the second rotary motor 7 are respectively engaged with the rotating shaft 14. The first flip plate 2 and the second flip plate 17 are respectively rotatably connected to the outer shell 13 through the first rotary motor 5 and the second rotary motor 7. The first flip plate 2 and the second flip plate 17 are in the horizontal direction in the initial state, which can carry the silicon material cold material, and at the same time can divide and close the space from the outer shell 13 to the feed inlet 1, thereby reducing the probability of dust floating out from the feed inlet 1 during crushing.

[0027] Furthermore, an air outlet is provided at the connection between the air outlet box 8 and the outer shell 13, and a filter screen 19 is provided in the middle of the inner side of the air outlet box 8. The filter screen 19 has a mesh size of 400, which can intercept the dust generated when the silicon material is crushed, thereby reducing the probability of dust drifting out of the device.

[0028] Furthermore, a gear set 20 is provided inside the mounting box 11. The gear set 20 includes two spur gears, which are fixedly connected to one end of the roller shaft of each of the two crushing rollers 21. The output end of the rotary motor 10 is engaged with one end of the roller shaft of one of the crushing rollers 21. The function of the gear set 20 is to realize the opposite rotation of the two crushing rollers 21, so that the crushing rollers 21 can crush the falling silicon cold material, thereby realizing the crushing of the silicon cold material.

[0029] Furthermore, two baffles 15 are fixedly connected to the top of the inner wall of the outer shell 13. The bottom surfaces of the first flip plate 2 and the second flip plate 17 are respectively attached to the top surfaces of the two baffles 15. The function of the baffles 15 is to enhance the support for the first flip plate 2 and the second flip plate 17, so that the first flip plate 2 and the second flip plate 17 can be sufficiently supported, thereby realizing the bearing of silicon material.

[0030] Furthermore, the aeration holes 16 and the electric heater 18 are located on both sides of the area enclosed by the first flip plate 2 and the second flip plate 17, respectively, so that the cold silicon material falling on the second flip plate 17 can be subjected to the impact of both hot and cold energy at the same time, which is more conducive to the cold silicon material cracking due to thermal expansion and contraction, thus facilitating the subsequent crushing and crushing of the cold silicon material.

[0031] The usage method of this embodiment is as follows: Before using this cold material crushing device for silicon material processing, the device needs to be connected to an external power supply. Then, the cold silicon material can be conveyed to the feed port 1 at the top of the outer shell 13 by the conveyor belt. After the silicon material is fed, the first rotary motor 5 will drive the rotating shaft 14 to rotate clockwise under the action of the controller, so that the first tilting plate 2 rotates clockwise, and the cold silicon material on the first tilting plate 2 slides down the surface of the tilting plate to the second tilting plate 17. Then the first tilting plate 2 will reset. At this time, the electric heater 18 can be activated to heat one side of the cold silicon material that has fallen on the second tilting plate 17. At the same time, liquid nitrogen can be introduced into the liquid nitrogen inlet pipe 3 so that the liquid nitrogen enters the storage box 4. The material is vaporized in the storage box 4, then passes through the aeration hole 16 into the outer shell 13, and rapidly freezes the other side of the silicon material cold material falling on the second flip plate 17. This causes the silicon material cold material to crack due to significant thermal expansion and contraction. Then, the controller controls the second rotary motor 7 to rotate counterclockwise, causing the second flip plate 17 to carry the cracked silicon material cold material to slide onto the inclined plate on the inner wall of the outer shell 13. Then, it falls along the inclined plate between the two opposing crushing rollers 21, causing the silicon material cold material to be crushed. At the same time, the negative pressure fan 9 can be started, causing the negative pressure fan 9 to suck the dust generated during crushing into the air outlet box 8, where it is intercepted and collected on the filter screen 19, making it difficult for the dust generated during crushing to float out of the device. Finally, the crushed silicon material cold material will slide out from the discharge port 12.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cold material crushing device for silicon material processing, comprising a housing (13), characterized in that: The top of the outer shell (13) is provided with a feed inlet (1), and the bottom of the feed inlet (1) is provided with a first flip plate (2). A storage box (4) is provided on one side wall of the top of the outer shell (13). A liquid nitrogen inlet pipe (3) passes through the top of the storage box (4). Multiple aeration holes (16) are provided at the junction of the storage box (4) and the side wall of the outer shell (13). A heat preservation box (6) is provided on the other side wall of the top of the outer shell (13). An electric heater (18) is installed inside the heat preservation box (6). The inner side of the outer shell (13) is provided with a second flip plate (17), and a gas outlet box (8) is provided on one side wall of the middle part of the outer shell (13). A negative pressure fan (9) is installed at the bottom of one side wall of the gas outlet box (8). An installation box (11) is provided in the middle of the front of the outer shell (13). A rotary motor (10) is installed on the front of the installation box (11). Two crushing rollers (21) are provided at the bottom of the second flip plate (17). A discharge port (12) is opened at the bottom of the front of the outer shell (13).

2. The cold material crushing device for silicon material processing according to claim 1, characterized in that: The top of the front of the outer casing (13) is equipped with a first rotary motor (5) and a second rotary motor (7), and a rotating shaft (14) passes through the middle of the first flip plate (2) and the second flip plate (17).

3. The cold material crushing device for silicon material processing according to claim 2, characterized in that: The output ends of the first rotary motor (5) and the second rotary motor (7) are respectively engaged and connected to the rotating shaft (14), and the first flip plate (2) and the second flip plate (17) are respectively rotatably connected to the outer shell (13) through the first rotary motor (5) and the second rotary motor (7).

4. The cold material crushing device for silicon material processing according to claim 1, characterized in that: An air outlet is provided at the connection between the air outlet box (8) and the outer shell (13), and a filter screen (19) is provided in the middle of the inner side of the air outlet box (8).

5. The cold material crushing device for silicon material processing according to claim 1, characterized in that: The mounting box (11) is provided with a gear set (20) inside. The gear set (20) includes two spur gears. The two spur gears are fixedly connected to one end of the roller shaft of the two crushing rollers (21). The output end of the rotary motor (10) is engaged with one end of the roller shaft of one of the crushing rollers (21).

6. The cold material crushing device for silicon material processing according to claim 1, characterized in that: Two baffles (15) are fixedly connected to the top of the inner wall of the outer shell (13), and the bottom surfaces of the first flip plate (2) and the second flip plate (17) are respectively attached to the top surfaces of the two baffles (15).

7. The cold material crushing device for silicon material processing according to claim 1, characterized in that: The aeration hole (16) and the electric heater (18) are located on both sides of the area enclosed by the first flip plate (2) and the second flip plate (17), respectively.

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