CN211937897U

CN211937897U - Sieving mechanism is used in monocrystalline silicon production

Info

Publication number: CN211937897U
Application number: CN202020367656.8U
Authority: CN
Inventors: 李帅; 高万里; 陈晓明
Original assignee: Inner Mongolia Heguang New Energy Co Ltd
Current assignee: Inner Mongolia Heguang New Energy Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-11-17
Anticipated expiration: 2030-03-20

Abstract

The utility model discloses a sieving mechanism is used in monocrystalline silicon production, including the pay-off case with locate the screening case of pay-off case below, the intercommunication is equipped with the conveying storehouse between pay-off case and the screening case, is equipped with the shale shaker in the screening case, the shale shaker is separated the screening case and is separated into the primary election storehouse and the choice storehouse of intercommunication setting from top to bottom, the primary election storehouse outer wall is connected with the primary election discharging channel, the choice storehouse outer wall is connected with first smart material passageway and second smart material passageway respectively. The utility model discloses in treat that the raw materials of screening are carried via the conveying storehouse and are got into the primary election storehouse, shale shaker work in the primary election storehouse, the less raw materials of granule and impurity pass through the shale shaker and get into choice storehouse, the great raw materials of granule then drops to the primary election discharge channel ejection of compact.

Description

Sieving mechanism is used in monocrystalline silicon production

The technical field is as follows:

the utility model relates to a monocrystalline silicon production facility technical field, concretely relates to sieving mechanism is used in monocrystalline silicon production.

Background art:

the methods for manufacturing single crystal silicon at present mainly include a Czochralski method, a magnetic field Czochralski method, a zone melting method and a double crucible Czochralski method. At present, when monocrystalline silicon is screened, different monocrystalline silicon cannot be separated according to different use requirements, the screening size cannot be adjusted, the screening rate is low, and feeding during screening cannot be controlled.

The utility model has the following contents:

an object of the utility model is to provide a sieving mechanism is used in monocrystalline silicon production to solve above-mentioned technical problem.

The utility model discloses by following technical scheme implement: a screening device for monocrystalline silicon production comprises a feeding box and a screening box arranged below the feeding box, wherein a conveying bin is communicated and arranged between the feeding box and the screening box, a vibrating screen is arranged in the screening box and divides the screening box into a primary sorting bin and a fine sorting bin which are communicated up and down, the outer wall of the primary sorting bin is connected with a primary sorting discharge channel, and the outer wall of the fine sorting bin is respectively connected with a first fine sorting channel and a second fine sorting channel;

conveying entry has been seted up to pay-off case bottom surface, and conveying storehouse top is connected to conveying entry, and the primary election entry has been seted up respectively to the lateral wall that the primary election storehouse is close to, and the shale shaker top is connected to the primary election entry, is equipped with the baffle that an inclination and shale shaker suited in the conveying storehouse, and the baffle below is connected with the lift axle, and the baffle can upwards rise and close conveying entry, the lift axle both sides still are equipped with the elastic support post, and there is the backing plate at the elastic support post top through spring coupling.

Further, the lateral wall that the conveying storehouse was kept away from in the primary election storehouse has seted up the primary election export respectively, and the level of primary election entry is higher than the level of primary election export, and the shale shaker slope is connected between primary election entry and primary election export, and primary election discharge channel is linked together with the primary election export.

Furthermore, the top of the primary selection discharge channel is hinged with a top cover, the top cover can be turned outwards to be opened, and a handle is arranged on the top cover.

Furthermore, a first screen and a second screen which are connected with each other through a rotating shaft are arranged in the fine selection bin, and the apertures of the first screen and the second screen are the same and are smaller than the aperture of the vibrating screen.

Further, there is a gear plate below the second screen through a gear structure, a support seat is arranged on the inner side of the first selection outlet, the side wall of the support seat is connected to a selection bin, and the side edge of the first screen, which is far away from the second screen, is rotatably connected with the support seat through a rotating shaft.

Furthermore, the surface of the baffle is also provided with an extension plate, one side of the extension plate and the baffle form a limit groove, and an inclined plane which is adaptive to the inclined angle of the limit groove is arranged at the conveying inlet.

The utility model has the advantages that:

1. the utility model discloses in treat that the raw materials of screening are carried via the conveying storehouse and are got into the primary election storehouse, shale shaker work in the primary election storehouse, the less raw materials of granule and impurity pass through the shale shaker and get into choice storehouse, the great raw materials of granule then drops to the primary election discharge channel ejection of compact. Further, the conveying bin can be opened or closed, thereby making the utility model discloses can control the speed of screening, baffle in the conveying bin not only plays stable sealed effect when the conveying entry is closed, but also can play when the conveying entry is opened, effectively guides the raw materials and screens the case.

2. The utility model discloses in, drive the swing of second screen cloth when the toothed disc rotates, second screen cloth and first screen cloth can swing to being equal and level mutually, and second screen cloth and first screen cloth form the inclined plane towards the first choice export this moment, and the second screen cloth also can swing to forming type of falling V structure with first screen cloth, and at this moment, the second screen cloth sets up towards the choice export slope of second, and first screen cloth sets up towards the first choice export slope of orientation. Under the effect of second screen cloth and first screen cloth, the raw materials that get into choice storehouse further sieves, and the impurity that wherein carries is discharged from the exhaust passage of bottom through first screen cloth and second screen cloth at last, and the less raw materials of surplus granule selects material passageway output from the first essence of both sides and the second essence respectively, simultaneously, owing to design two essence select material passageways, can effectively avoid piling up and the production of jam problem.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic longitudinal sectional view of a feed box of a screening apparatus for producing single-crystal silicon in an embodiment in a closed state;

FIG. 2 is an enlarged partial schematic view of the transfer chamber of FIG. 1;

FIG. 3 is a schematic enlarged view of a portion of the primary exit of FIG. 1;

FIG. 4 is an enlarged schematic view of a portion of the first pick outlet of FIG. 1;

FIG. 5 is an enlarged schematic view of a portion of the second pick outlet of FIG. 1;

FIG. 6 is a schematic longitudinal sectional view showing a state where a feed box of the screening apparatus for producing single-crystal silicon is opened in the embodiment;

fig. 7 is a partially enlarged schematic view of fig. 6.

Labeled as: 1. a feeding box; 11. a delivery inlet; 12. a sealing plate; 2. a screening box; 21. primary selection of bins; 211. vibrating screen; 212. primarily selecting an inlet; 213. primarily selecting an outlet; 22. a fine selection bin; 221. a first screen; 222. a second screen; 223. a gear plate; 224. a supporting seat; 225. a first fine screening outlet; 226. a second fine screening outlet; 227. a support plate; 228. a guide plate; 2281. a fastener; 3. a transfer bin; 31. a baffle plate; 311. an extension plate; 312. a limiting groove; 313. a clamping plate; 32. a lifting shaft; 33. an elastomeric support column; 331. a base plate; 4. primarily selecting a discharge channel; 41. a top cover; 411. a handle; 5. a first fine sorting channel; 6. and a second fine sorting channel.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the screening device for producing monocrystalline silicon provided in this embodiment includes a feeding box 1 and a screening box 2 disposed below the feeding box 1, a conveying bin 3 is disposed between the feeding box 1 and the screening box 2, and a raw material to be screened in the feeding box 1 enters the screening box 2 through the conveying bin 3 for screening; referring to fig. 1 and fig. 2, the screening box 2 is provided with a vibrating screen 211, the vibrating screen 211 divides the screening box 2 into a primary sorting bin 21 and a fine sorting bin 22 which are communicated with each other from top to bottom, the outer wall of the primary sorting bin 21 is connected with a primary sorting discharge channel 4, the outer wall of the fine sorting bin 22 is respectively connected with a first fine sorting channel 5 and a second fine sorting channel 6, and the bottom wall of the fine sorting bin 22 is further connected with a waste discharge channel. In this embodiment, the raw materials that wait to screen are carried via conveying storehouse 3 and are got into primary election storehouse 21, and shale shaker 211 work in the primary election storehouse 21, and the less raw materials of granule and impurity pass through shale shaker 211 and get into choice storehouse 22, and the great raw materials of granule then drops to the 4 ejection of compact of primary election discharge passage.

Referring to fig. 2 in combination with fig. 7, in the present embodiment, the conveying bin 3 can be opened or closed, and the implementation structure is specifically: referring to fig. 7, a conveying inlet 11 is formed in the bottom surface of the feeding box 1, the top of the conveying bin 3 is connected to the conveying inlet 11, a primary sorting inlet 212 and a primary sorting outlet 213 are respectively formed in the side wall of the primary sorting bin 21 close to and far from the conveying bin 3, the horizontal height of the primary sorting inlet 212 is higher than that of the primary sorting outlet 213, the vibrating screen 211 is obliquely connected between the primary sorting inlet 212 and the primary sorting outlet 213, and the primary sorting discharge channel 4 is communicated with the primary sorting outlet 213. Referring to fig. 2, a baffle 31 with an inclination angle corresponding to the vibrating screen 211 is arranged in the conveying bin 3, the baffle 31 can move up and down, the conveying inlet 11 can be closed when the baffle 31 rises up, at the moment, the screening box 2 carries out separate screening work, and the feeding box 1 does not feed materials into the screening box 2 any more; referring to fig. 7, the baffle 31 may be lowered to a level with the bottom surface of the shaker 211, at which point the transfer inlet 11 is opened and the material in the feed bin 1 is allowed to pass through the transfer inlet 11 and roll down to the shaker 211 for primary separation by the action of the baffle 31.

Referring to fig. 2, a lifting shaft 32 is connected below the baffle 31, the lifting shaft 32 is connected to the bottom surface of the conveying bin 3 through a lifting driving motor, elastic support columns 33 are further arranged on two sides of the lifting shaft 32, the top of each elastic support column 33 is connected with a base plate 331 through a spring, when the baffle 31 is lowered to be flush with the vibrating screen 211, the base plates 331 are abutted to the bottom surface of the baffle 21, and the base plates 331 play a role in supporting and protecting. Referring to fig. 7, the surface of the baffle 31 is further provided with an extension plate 311, one side of the extension plate 311 and the baffle 31 form a limit groove 312, the conveying inlet 11 is provided with an inclined surface adapted to the inclined angle of the limit groove 312, and when the baffle 31 closes the conveying inlet 11, a sealing effect is achieved; further, the inner wall of the feeding box 1 is further provided with a sealing plate 12, the sealing plate 12 is arranged close to the conveying inlet, one side, away from the primary selection inlet 212, of the baffle plate 31 extends upwards to form a clamping plate 313, and a groove matched with the clamping plate 313 is embedded in the bottom surface of the sealing plate 12.

Referring to fig. 3, in this embodiment, the top of the primary selection discharging channel 4 is further hinged to be provided with a top cover 41, the top cover 41 can be turned outwards to be opened, the top cover 41 is provided with a handle 411, when the primary selection discharging channel 4 is blocked, the top cover 41 can be opened to be processed, and flexibility and convenience are improved.

Referring to fig. 4 in combination with fig. 6, in this embodiment, a first screen 221 and a second screen 222 are disposed in the refining bin 22 and connected to each other through a rotating shaft, and the first screen 221 and the second screen 222 have the same aperture and are smaller than the size of the vibrating screen 211. The first fine sorting channel 5 and the second fine sorting channel 6 are oppositely arranged at two sides of the fine sorting bin 22, a first fine sorting outlet 225 and a second fine sorting outlet 226 are respectively arranged at two opposite side walls of the fine sorting bin 22, the first fine sorting outlet 225 is positioned below the primary sorting outlet 213, and the first fine sorting channel 5 is connected to the first fine sorting outlet 225; the second fine sorting outlet 226 is located below the primary sorting inlet 212, and the second fine sorting passage 6 is connected to the second fine sorting outlet 226; a gear disc 223 is connected below the second screen 222 through a gear structure, a support 224 is arranged inside the first fine screening outlet 225, the side wall of the support 224 is connected to the fine screening bin 22, and the side edge of the first screen 221 far away from the second screen 222 is rotatably connected with the support 224 through a rotating shaft.

Referring to fig. 6, the gear plate 223 rotates to swing the second screen 222, the second screen 222 and the first screen 221 can swing to swing, the second screen 222 and the first screen 221 can swing to be flush with each other, at this time, the second screen 222 and the first screen 221 form an inclined plane facing the first concentration outlet 225, the second screen 222 can also swing to form an inverted V-shaped structure with the first screen 221, at this time, the second screen 222 is inclined toward the second concentration outlet 226, and the first screen 221 is inclined toward the first concentration outlet 225. Under the action of the second screen 222 and the first screen 221, the raw material entering the fine selection bin 22 is further screened, wherein the carried impurities are finally discharged from the waste discharge channel at the bottom through the first screen 221 and the second screen 222, and the raw material with smaller residual particles is respectively output from the first fine selection channel 5 and the second fine selection channel 6 at two sides.

Further, referring to fig. 5, the inner wall of the refining bin 22 is further provided with a supporting plate 227, the supporting plate 227 is located below the second refining outlet 226, a guide plate 228 is hinged to the supporting plate 227, the guide plate 228 is obliquely and upwardly arranged towards the second screen 222, the bottom surface of the end portion of the guide plate 228 close to the second screen 222 is connected to the guide plate 228 through a spring, the bottom surface of the end portion of the second screen 222 and the top surface of the end portion of the guide plate 228 are further provided with a clamping member 2281, and the end portion of the second screen 222 can be clamped with the end portion of the guide plate 228 to.

In this embodiment, the raw materials that wait to screen are carried via conveying storehouse 3 and are got into primary election storehouse 21, and shale shaker 211 work in the primary election storehouse 21, and the less raw materials of granule and impurity pass through shale shaker 211 and get into choice storehouse 22, and the great raw materials of granule then drops to the 4 ejection of compact of primary election discharge passage. Further, conveying bin 3 can be opened or closed, thereby makes the utility model discloses can control the speed of screening, baffle 31 in conveying bin 3 not only plays stable sealed effect when conveying entry 11 is closed, but also can play when conveying entry 11 is opened, effectively guides the raw materials and screens case 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The screening device for monocrystalline silicon production is characterized by comprising a feeding box (1) and a screening box (2) arranged below the feeding box (1), wherein a conveying bin (3) is communicated between the feeding box (1) and the screening box (2), a vibrating screen (211) is arranged in the screening box (2), the vibrating screen (211) divides the screening box (2) into a primary sorting bin (21) and a fine sorting bin (22) which are communicated up and down, the outer wall of the primary sorting bin (21) is connected with a primary sorting discharge channel (4), and the outer wall of the fine sorting bin (22) is respectively connected with a first fine sorting channel (5) and a second fine sorting channel (6);

conveying entry (11) have been seted up to pay-off case (1) bottom surface, conveying storehouse (3) top is connected to conveying entry (11), and primary election entry (212) have been seted up respectively to the lateral wall that primary election storehouse (21) are close to, and shale shaker (211) top is connected to primary election entry (212), is equipped with baffle (31) that an inclination and shale shaker (211) suit in conveying storehouse (3), and baffle (31) below is connected with lift axle (32), and baffle (31) can upwards rise and close conveying entry (11), lift axle (32) both sides still are equipped with elastic support column (33), and there is backing plate (331) at elastic support column (33) top through spring coupling.

2. The screening apparatus for producing single-crystal silicon according to claim 1, characterized in that: the lateral wall that conveying storehouse (3) was kept away from in primary election storehouse (21) has seted up primary election export (213) respectively, and the level of primary election entry (212) is higher than the level of primary election export (213), and shale shaker (211) slope is connected between primary election entry (212) and primary election export (213), and primary election discharge passage (4) are linked together with primary election export (213).

3. The screening apparatus for producing single-crystal silicon according to claim 2, characterized in that: the top of the primary selection discharging channel (4) is also hinged with a top cover (41), the top cover (41) can be turned outwards to be opened, and a handle (411) is arranged on the top cover (41).

4. The screening apparatus for producing single-crystal silicon according to claim 3, characterized in that: the fine selection bin (22) is internally provided with a first screen (221) and a second screen (222) which are connected with each other through a rotating shaft, and the first screen (221) and the second screen (222) have the same aperture and are smaller than the aperture of the vibrating screen (211).

5. The screening apparatus for producing single-crystal silicon according to claim 4, characterized in that: the lower part of the second screen (222) is connected with a gear disc (223) through a gear structure, the inner side of the first selection outlet (225) is provided with a supporting seat (224), the side wall of the supporting seat (224) is connected to the selection bin (22), and the side edge of the first screen (221) far away from the second screen (222) is rotatably connected with the supporting seat (224) through a rotating shaft.

6. The screening apparatus for producing single-crystal silicon according to claim 1, characterized in that: the surface of the baffle plate (31) is also provided with an extension plate (311), one side edge of the extension plate (311) and the baffle plate (31) form a limiting groove (312), and an inclined surface which is adaptive to the inclined angle of the limiting groove (312) is arranged at the conveying inlet (11).