Automatic blowing device for charging basket of single crystal furnace

Abstract

The utility model discloses an automatic blowing device for a charging basket of a single crystal furnace, which comprises a single crystal furnace auxiliary chamber and a flange arranged on the outer edge of the lower end of the single crystal furnace auxiliary chamber, a blowing mechanism is arranged on the outer side of the single crystal furnace auxiliary chamber, and the blowing mechanism comprises a hollow pipe which is arranged on the outer side of the single crystal furnace auxiliary chamber and is matched with the single crystal furnace auxiliary chamber in height. A hose used for being connected with compressed air is arranged on the inner side of the hollow pipe, the lower end of the hose corresponds to the flange, a nozzle inclining inwards by 45 degrees is arranged at the lower end of the hose, and a hoop is arranged in the middle of the nozzle. According to the automatic blowing device for the charging barrel of the single crystal furnace, the blowing mechanism comprises the hose, the hollow pipe, the infrared sensor and the nozzle, so that the charging barrel can be automatically blown, manpower is saved, and the automation degree of the single crystal furnace is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal furnace automation, in particular to an automatic blowing device for a single crystal furnace charging barrel. Background Art

[0002] Monocrystalline silicon is a key raw material for solar panel manufacturing, and its quality directly impacts the quality and efficiency of solar panels. Monocrystalline silicon ingots are one of the industrial products of monocrystalline silicon. Currently, the primary production method in the industry is the Czochralski method, which involves slowly inserting a single crystal seed crystal into a molten polycrystalline silicon solution and then pulling it to produce the ingot. This method involves furnace assembly, initial charging, melt loading, re-feeding, welding, seeding, shouldering, equalizing the diameter, and finishing.

[0003] Impurities carried by the barrel during re-feeding are one of the main causes of raw material contamination in the furnace, directly affecting the crystallization and quality of silicon ingots. However, currently, barrel cleaning in the industry is performed by operators using compressed air guns. In situations where re-feeding is concentrated, operators may not have enough time to purge the barrel, which may introduce impurities into the furnace or seriously affect the efficiency of the secondary addition. Therefore, this patent invents a device that can automatically purge the barrel, saving manpower and improving the automation of single crystal furnaces. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic purging device for a single crystal furnace charging barrel, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A single crystal furnace material barrel automatic purging device comprises a single crystal furnace sub-chamber and a flange arranged on the outer edge of the lower end of the single crystal furnace sub-chamber, a purging mechanism is arranged on the outside of the single crystal furnace sub-chamber, the purging mechanism comprises a hollow tube arranged on the outside of the single crystal furnace sub-chamber and the height of which is adapted to the single crystal furnace sub-chamber, a hose for connecting compressed air is arranged on the inside of the hollow tube, the lower end of the hose corresponds to the flange, and the lower end of the hose is provided with a nozzle inclined inward at forty-five degrees, a clamp is provided in the middle of the nozzle, and a solenoid valve for controlling the outflow of compressed air is provided inside the clamp, and an infrared sensor for sensing the barrel is provided on the inside of the single crystal furnace sub-chamber.

[0007] Preferably, the number of the hollow tubes is four, and the four hollow tubes are evenly distributed along the circumference of the single crystal furnace sub-chamber.

[0008] Preferably, the rotating mechanism comprises a rotating ring rotatably connected to the outer side of the middle part of the subsidiary chamber of the single crystal furnace, the rotating ring is uniformly provided with second through grooves corresponding to the hollow pipes one by one, the second through grooves are fixedly connected to the second through grooves one by one, one side of the rotating ring is provided with a first notch in the shape of a sector, the inner side of the first notch is uniformly provided with gear teeth close to one end of the subsidiary chamber of the single crystal furnace, the inner side of the first notch is provided with an incomplete gear intermittently engaged with the gear teeth, a fixed seat is fixedly arranged on one side of the subsidiary chamber of the single crystal furnace, a motor for driving the incomplete gear to rotate is fixedly arranged on the fixed seat, a second notch is arranged on the lower end of the first notch close to one side of the subsidiary chamber of the single crystal furnace, an arc-shaped guide rod is fixedly arranged at one end of the inner side of the second through groove, a stop block corresponding to the second notch is fixedly arranged on the outer side of the subsidiary chamber of the single crystal furnace, one end of the arc-shaped guide rod is movably connected with the stop block, and a spring is arranged on the outer side of the arc-shaped guide rod.

[0009] Preferably, the spring is in a contracted state when the incomplete gear is engaged with the gear teeth.

[0010] Preferably, the flange is uniformly provided with arc-shaped sliding grooves corresponding to the hollow pipes one by one, the sliding grooves are slidably connected with sliding blocks, the sliding blocks are provided with first through grooves, and the lower ends of the hollow pipes are fixedly arranged in the first through grooves.

[0011] Preferably, an arc-shaped telescopic rod is arranged between the side wall of the sliding block and the inner wall of the arc-shaped sliding groove.

[0012] Compared with the prior art, the single crystal furnace bucket automatic blowing device has the following beneficial effects:

[0013] The single crystal furnace bucket automatic blowing device comprises a blowing mechanism including a hose, a hollow pipe, an infrared sensor and a nozzle, so that automatic blowing of the material cylinder can be realized, manpower is saved, the automation degree of the single crystal furnace is improved, the rotating mechanism can drive the plurality of hollow pipes to reciprocatingly rotate by a certain angle, so that the blowing range is increased, the blowing efficiency is further increased, the structure is compact, and the practicability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a structural schematic view of another view of the utility model;

[0016] Figure 3 is a structural schematic view of the utility model highlighting the flange;

[0017] Figure 4 is a structural schematic view of the rotating mechanism of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the lower end of the hollow tube of the utility model.

[0019] In the figure: 1. Single crystal furnace auxiliary chamber; 2. Flange; 3. Hollow tube; 4. Hose; 5. Rotating ring; 6. Motor; 7. Infrared sensor; 8. Arc slide; 9. Slider; 10. First through groove; 11. Telescopic rod; 12. Second through groove; 13. Fixed seat; 14. Incomplete gear; 15. First notch; 16. Gear teeth; 17. Arc guide rod; 18. Stop block; 19. Second notch; 20. Spring; 21. Nozzle; 22. Hoop. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-5 As shown, an automatic purging device for a single crystal furnace barrel comprises a single crystal furnace sub-chamber 1 and a flange 2 arranged on the outer edge of the lower end of the single crystal furnace sub-chamber 1. A purging mechanism is arranged on the outside of the single crystal furnace sub-chamber 1, and the purging mechanism comprises a hollow tube 3 arranged on the outside of the single crystal furnace sub-chamber 1 and having a height adapted to the single crystal furnace sub-chamber 1. There are four hollow tubes 3, and the four hollow tubes 3 are evenly distributed along the circumference of the single crystal furnace sub-chamber 1. A hose 4 for connecting compressed air is provided on the inner side of the hollow tube 3. The lower end of the hose 4 corresponds to the flange 2, and the lower end of the hose 4 is provided with a nozzle 21 inclined inward at forty-five degrees. A clamp 22 is provided in the middle of the nozzle 21, and an electromagnetic valve for controlling the outflow of compressed air is provided inside the clamp 22. An infrared sensor 7 for sensing the barrel is provided on the inner side of the single crystal furnace sub-chamber 1.

[0022] Furthermore, it also includes a rotating mechanism, which includes a rotating ring 5 rotatably connected to the outer side of the middle part of the single crystal furnace auxiliary chamber 1, and the rotating ring 5 is evenly provided with second through grooves 12 corresponding to the hollow tubes 3 one by one. The second through grooves 12 are fixedly connected to the second through grooves 12 one by one. A first fan-shaped notch 15 is provided on one side of the rotating ring 5, and gear teeth 16 are evenly provided on the inner side of the first notch 15 near the end of the single crystal furnace auxiliary chamber 1. An incomplete gear 14 intermittently meshed with the gear teeth 16 is provided on the inner side of the first notch 15. A fixed gear 14 is fixed on one side of the single crystal furnace auxiliary chamber 1. A fixed seat 13 is provided on which a motor 6 for driving the incomplete gear 14 to rotate is fixedly mounted. A second notch 19 is provided on the side of the lower end of the first notch 15 close to the auxiliary chamber 1 of the single crystal furnace. An arc-shaped guide rod 17 is fixedly provided at one end of the inner side of the second through groove 12. A stop block 18 corresponding to the second notch 19 is fixedly provided on the outer side of the auxiliary chamber 1 of the single crystal furnace. One end of the arc-shaped guide rod 17 is movably connected to the stop block 18, and a spring 20 is sleeved on the outer side of the arc-shaped guide rod 17. When the incomplete gear 14 is engaged with the gear teeth 16, the spring 20 is in a contracted state.

[0023] In order to increase the stability of the hollow tube 3, arc-shaped slide grooves 8 corresponding to the hollow tube 3 are evenly arranged on the flange 2. The arc-shaped slide grooves 8 are slidably connected with a slider 9, and a first through groove 10 is provided on the slider 9. The lower end of the hollow tube 3 is fixed in the first through groove 10. An arc-shaped telescopic rod 11 for limiting and guiding is provided between the side wall of the slider 9 and the inner wall of the arc-shaped slide groove 8.

[0024] When in use, the upper end of the hose 4 is connected to the compressed air pipe at the rear of the furnace, and the solenoid valve is connected to the internal control system of the furnace. The device connected to the system together with it is the infrared sensor 7 installed on the inner wall of the lower end of the auxiliary chamber 1 of the single crystal furnace. The above functions are all integrated into the feeding program, which can ensure that the infrared sensor 7 is invalid when the furnace is performing other work steps, avoiding the large amount of compressed air being released during crystal pulling, which may cause accidents.

[0025] After the above structure is installed, when the furnace enters the charging process, the infrared sensor 7 is activated. When the barrel automatically enters the auxiliary chamber 1 of the single crystal furnace, the infrared sensor 7 is blocked, the solenoid valve inside the nozzle 21 is opened, and a large amount of compressed air is released to blow the barrel clean. The operator does not need to wait next to the furnace for operation and can leave after the barrel is hung up.

[0026] In addition, during purging, the motor 6 can be controlled to drive the incomplete gear 14 to rotate, and the incomplete gear 14 drives the swivel 5 to rotate through the gear teeth 16. The swivel 5 drives the multiple hollow tubes 3 to rotate, and the arc-shaped guide rod 17 follows the displacement of the swivel 5, and cooperates with the stop block 18 to realize the compression of the spring 20. When the incomplete gear 14 is separated from the gear teeth 16, the spring 20 is reset, and the swivel 5 drives the multiple hollow tubes 3 to reset. When the incomplete gear 14 is engaged with the gear teeth 16 again, the swivel 5 is driven to rotate again, thereby realizing the back and forth rotation of the multiple hollow tubes 3, increasing the purging range of the nozzle 21, and the slider 9, arc-shaped slide groove 8 and telescopic rod 11 on the flange 2 can increase the stability of the hollow tube 3.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic purging device for a single crystal furnace charge barrel, comprising a single crystal furnace auxiliary chamber (1) and a flange (2) arranged on the outer edge of the lower end of the single crystal furnace auxiliary chamber (1), characterized in that: A purge mechanism is provided on the outside of the single crystal furnace auxiliary chamber (1), and the purge mechanism includes a hollow tube (3) provided on the outside of the single crystal furnace auxiliary chamber (1) and having a height adapted to the single crystal furnace auxiliary chamber (1); a hose (4) for connecting compressed air is provided on the inside of the hollow tube (3); the lower end of the hose (4) corresponds to the flange (2), and the lower end of the hose (4) is provided with a nozzle (21) inclined inward at a forty-five degree angle; a clamp (22) is provided in the middle of the nozzle (21), and a solenoid valve for controlling the outflow of compressed air is provided inside the clamp (22); an infrared sensor (7) for sensing the barrel is provided on the inside of the single crystal furnace auxiliary chamber (1).

2. The automatic purging device for a single crystal furnace charging barrel according to claim 1, characterized in that: The number of the hollow tubes (3) is four, and the four hollow tubes (3) are evenly distributed along the circumference of the single crystal furnace sub-chamber (1).

3. The automatic purging device for a single crystal furnace charging barrel according to claim 1, characterized in that: The invention also includes a rotating mechanism, wherein the rotating mechanism includes a rotating ring (5) rotatably connected to the outer side of the middle of the single crystal furnace auxiliary chamber (1), the rotating ring (5) is evenly provided with second through grooves (12) corresponding to the hollow tubes (3), the second through grooves (12) are fixedly connected to the second through grooves (12), one side of the rotating ring (5) is provided with a fan-shaped first notch (15), the inner side of the first notch (15) is close to the end of the single crystal furnace auxiliary chamber (1) is evenly provided with gear teeth (16), the inner side of the first notch (15) is provided with an incomplete gear (14) intermittently meshed with the gear teeth (16), and the single crystal furnace auxiliary chamber (1) is provided with a plurality of gears (14) intermittently meshed with the gear teeth (16). A fixing seat (13) is fixedly provided on one side of the chamber (1), and a motor (6) for driving the incomplete gear (14) to rotate is fixedly provided on the fixing seat (13), a second notch (19) is provided on the side of the lower end of the first notch (15) close to the single crystal furnace auxiliary chamber (1), an arc-shaped guide rod (17) is fixedly provided at one end of the inner side of the second through groove (12), a stop block (18) corresponding to the second notch (19) is fixedly provided on the outer side of the single crystal furnace auxiliary chamber (1), one end of the arc-shaped guide rod (17) is movably connected to the stop block (18), and a spring (20) is sleeved on the outer side of the arc-shaped guide rod (17).

4. The automatic purging device for a single crystal furnace charging barrel according to claim 3, characterized in that: When the incomplete gear (14) is engaged with the gear teeth (16), the spring (20) is in a contracted state.

5. The automatic purging device for a single crystal furnace charging barrel according to claim 3, characterized in that: The flange (2) is evenly provided with arc-shaped sliding grooves (8) corresponding to the hollow tubes (3) one by one. The arc-shaped sliding grooves (8) are slidably connected with a slider (9). The slider (9) is provided with a first through groove (10). The lower end of the hollow tube (3) is fixedly provided in the first through groove (10).

6. The automatic purging device for a single crystal furnace charging barrel according to claim 5, characterized in that: An arc-shaped telescopic rod (11) is provided between the side wall of the slider (9) and the inner wall of the arc-shaped sliding groove (8).

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