CN210855293U - Anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production - Google Patents
Anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production Download PDFInfo
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- CN210855293U CN210855293U CN201921827122.2U CN201921827122U CN210855293U CN 210855293 U CN210855293 U CN 210855293U CN 201921827122 U CN201921827122 U CN 201921827122U CN 210855293 U CN210855293 U CN 210855293U
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Abstract
The utility model relates to a polycrystalline silicon apparatus for producing technical field discloses an anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production, including the tail gas hood main part, one side of tail gas hood main part is provided with the tail gas discharge port and takes over, the opposite side of tail gas hood main part is connected with tail gas hood inner wall cleaning device, one side of side all is connected with fixed pipe around the tail gas hood main part, the position that the tail gas discharge port was taken over is kept away from to the bottom of tail gas hood main part has seted up the square hole, the position that the bottom of tail gas hood main part is close to the square hole is connected with the square hole shrouding. The utility model discloses a connecting rod, handle, brush, round hole, support frame, square hole and square hole shrouding, the silica flour that makes the tail gas hood inner wall that can be convenient is cleared up by the brush to discharge silica flour from the square hole in the tail gas hood main part, thereby can avoid the long-time back of using of tail gas hood main part, the silica flour is long-pending more influences the problem of exhaust emission, thereby has improved the practicality of this tail gas hood.
Description
Technical Field
The utility model relates to a polycrystalline silicon production device technical field specifically is a polycrystalline silicon production is used prevents stifled formula reduction furnace tail gas hood.
Background
Polycrystalline silicon is a form of elemental silicon. When molten elemental silicon is solidified under undercooling conditions, silicon atoms are arranged in the form of a diamond lattice into a plurality of crystal nuclei, and if the crystal nuclei grow into crystal grains with different crystal plane orientations, the crystal grains are combined and crystallized into polycrystalline silicon. Currently, the production of polysilicon mainly adopts an improved siemens method, which adopts silicon, hydrogen chloride, trichlorosilane and other raw materials, adopts hydrogen as a reducing agent, and produces polysilicon in a special reducing furnace. In the production process of the improved Siemens method, due to reasons of uneven material proportion, uneven temperature field and the like, a large amount of silicon powder with the particle size distribution of 0.1-460 microns is generated in the reduction furnace, wherein the silicon powder with the particle size of more than 10 microns reaches more than 80%; if the silicon powder enters the discharge pipeline along with the tail gas, the equipment is seriously damaged, and an airflow pipeline is blocked. Therefore, it is necessary to install an exhaust hood at the exhaust outlet to separate the silicon powder from the exhaust stream as much as possible.
There are multiple reduction furnace tail gas hood in the existing market, but these reduction furnace tail gas hood ubiquitous tail gas when the tail gas hood, partial silica flour can adsorb on the inner wall of tail gas hood, and after long-time the use, the silica flour is amassed more and more influences exhaust emission, and can not be convenient hold back silica flour in the tail gas hood and take out silica flour from the tail gas hood. Therefore, the person skilled in the art provides an anti-blocking type reduction furnace tail gas hood for producing polycrystalline silicon, so as to solve the problems in the background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production to solve the problem that provides among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
an anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production comprises a tail gas hood main body, wherein a tail gas outlet connecting pipe is arranged on one side of the tail gas hood main body, a tail gas hood inner wall cleaning device is connected to the other side of the tail gas hood main body, fixed pipes are connected to one side of the front side and the rear side of the tail gas hood main body, a square hole is formed in the position, far away from the tail gas outlet connecting pipe, of the bottom end of the tail gas hood main body, a square hole sealing plate is connected to the position, close to the square hole, of the bottom end of the tail gas hood main body, a vent pipe is connected to one side, far away from each other, of the two fixed pipes, a first limiting screw hole is formed in the top end of each fixed pipe, a limiting screw rod is connected to the position, close to the first limiting screw hole, of the top end of each, the filter plate is installed to the inboard of breather pipe.
As a further aspect of the present invention: tail gas hood inner wall cleaning device includes the support frame, the brush is all installed to the four sides of one side of support frame, the intermediate position of one side of support frame is connected with the connecting rod, the handle is installed to one side that the support frame was kept away from to the connecting rod.
As a further aspect of the present invention: the tail gas hood main part is close to the intermediate position of one side of handle and has been seted up the round hole, the connecting rod sets up the inside at the round hole, four brushes that set up on the support frame contact with the top, the bottom and the front and back side of the inner wall of tail gas hood main part respectively.
As a further aspect of the present invention: the limiting screw penetrates through the inner sides of the first limiting screw hole and the second limiting screw hole in sequence, and the vent pipe and the fixed pipe are connected in a fastening mode through the limiting screw, the first limiting screw hole and the second limiting screw hole.
As a further aspect of the present invention: the novel exhaust hood is characterized in that a damping hinge is arranged on one side of the joint of the square hole sealing plate and the exhaust hood body, a locking structure is arranged on the other side of the joint of the square hole sealing plate and the exhaust hood body, and a sealing rubber pad is arranged at the joint of the square hole sealing plate and the exhaust hood body.
As a further aspect of the present invention: the position that the side is close to fixed pipe around the tail gas hood main part all is provided with the vent, the rear portion setting of one side of breather pipe is in the inside of fixed pipe, the vertical cross-section at the rear portion of one side of breather pipe is the same with the vertical cross-section of the inner wall of fixed pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. through the breather pipe, fixed pipe, filter plate and ventilation hole, back in the tail gas hood main part is discharged tail gas with the reducing furnace, can discharge through the breather pipe reposition of redundant personnel, and silica flour can be held back in the breather pipe, through stop screw, first spacing screw and the spacing screw of second, can be convenient lift the breather pipe off with the silica flour in clearance breather pipe and the fixed pipe from the fixed pipe, thereby can be convenient with silica flour in the tail gas from the tail gas separation, and can be convenient take out silica flour from this tail gas hood, thereby the tail gas treatment efficiency of this tail gas hood has been improved.
2. Through connecting rod, handle, brush, round hole, support frame, square hole and square hole shrouding, the silica flour that makes the tail gas hood inner wall that can be convenient is cleared up by the brush to discharge silica flour from the square hole in the tail gas hood main part, thereby can avoid the long-time back of using of tail gas hood main part, the problem that the silica flour influences exhaust emission more and more, thereby improved the practicality of this tail gas hood.
Drawings
FIG. 1 is a schematic structural view of an anti-blocking type reduction furnace tail gas hood for polysilicon production;
FIG. 2 is a partial exploded view of a snorkel and a fixed tube in an anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production;
FIG. 3 is a schematic view of a partial structure of a tail gas hood inner wall cleaning device in an anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production;
FIG. 4 is a partial sectional view of a tail gas hood body, a vent pipe and a fixed pipe in the tail gas hood of the anti-blocking type reduction furnace for producing polycrystalline silicon.
In the figure: 1. a tail gas outlet connecting pipe; 2. an exhaust pipe; 3. a breather pipe; 4. a limit screw; 5. a tail gas hood body; 6. a tail gas hood inner wall cleaning device; 7. a fixed tube; 8. filtering the plate; 9. a first limit screw hole; 10. a second limit screw hole; 11. a square hole closing plate; 12. a square hole; 61. a handle; 62. a connecting rod; 63. a brush; 64. a support frame.
Detailed Description
Referring to fig. 1 to 4, in the embodiment of the present invention, an anti-blocking type reduction furnace exhaust hood for polysilicon production comprises an exhaust hood main body 5, an exhaust outlet connection pipe 1 is arranged on one side of the exhaust hood main body 5, an exhaust hood inner wall cleaning device 6 is connected to the other side of the exhaust hood main body 5, fixed pipes 7 are connected to one side of the front side and the rear side of the exhaust hood main body 5, a square hole 12 is formed at the bottom end of the exhaust hood main body 5 far away from the exhaust outlet connection pipe 1, a square hole closing plate 11 is connected to the bottom end of the exhaust hood main body 5 close to the square hole 12, a vent pipe 3 is connected to the side of the two fixed pipes 7 far away from each other, a first limit screw 9 is formed at the top end of the fixed pipe 7, a limit screw 4 is connected to the top end of the fixed pipe 7 close to the first limit screw 9, a second limit screw 10 is formed at the top end of the vent pipe 3, a, a filter plate 8 is installed on the inner side of the breather pipe 3.
In fig. 3: exhaust cover inner wall cleaning device 6 includes support frame 64, brush 63 is all installed to the four sides of one side of support frame 64, the intermediate position of one side of support frame 64 is connected with connecting rod 62, connecting rod 62 is kept away from one side of support frame 64 and is installed handle 61, thereby can hand handle 61, pulling handle 61, brush 63 of installing on support frame 64 and the support frame 64 that handle 61 is connected removes in exhaust cover main part 5 is inside, make the brush 63 that contacts with the 5 inner walls of exhaust cover main part 5 clear up the silica flour that the inner wall of exhaust cover main part 5 was long-pending, support frame 64 can remove the silica flour to square hole 12 department from clearing up on the 5 inner walls of exhaust cover main part.
In fig. 1 and 3: the round hole has been seted up to the intermediate position that tail gas cover main part 5 is close to one side of handle 61, and connecting rod 62 sets up in the inside of round hole, and four brushes 63 that set up on the support frame 64 contact with the top, the bottom and the front and back side of the inner wall of tail gas cover main part 5 respectively to brush 63 that the inner wall of tail gas cover main part 5 contacted can clear up the silica flour that the inner wall of tail gas cover main part 5 was long-pending stayed.
In fig. 2: stop screw 4 runs through the inboard at first stop screw 9 and second stop screw 10 in proper order, breather pipe 3 and fixed pipe 7 pass through stop screw 4, first stop screw 9 and the stop screw 10 fastening connection of second, thereby when needs with breather pipe 3 and the inside accumulated silica flour that stays of fixed pipe 7, can rotate stop screw 4 out second stop screw 10 and first stop screw 9 in proper order, and take out breather pipe 3 from fixed pipe 7, thereby the clearance that can be convenient falls the inside accumulated silica flour that stays of breather pipe 3 and fixed pipe 7.
In fig. 4: one side of the junction of square hole shrouding 11 and tail gas hood main part 5 is provided with the damping hinge, and the opposite side of the junction of square hole shrouding 11 and tail gas hood main part 5 is provided with the hasp structure, and the junction of square hole shrouding 11 and tail gas hood main part 5 is provided with sealing rubber pad to can open the hasp structure that sets up between square hole shrouding 11 and the tail gas hood main part 5, and open square hole shrouding 11 from the upset of square hole 12 through the damping hinge.
In fig. 2 and 4: the position that the side is close to fixed pipe 7 around tail gas hood main part 5 all is provided with the vent, and the rear portion setting of one side of breather pipe 3 is in the inside of fixed pipe 7, and the vertical cross-section at the rear portion of one side of breather pipe 3 is the same with the vertical cross-section of the inner wall of fixed pipe 7 to when the reduction furnace is taking over 1 row into tail gas hood main part 5 through the tail gas discharge port with tail gas, tail gas can be through two ventilation hole reposition of redundant personnel and get into in the breather pipe 3 in tail gas hood main part 5.
The utility model discloses a theory of operation is: when the tail gas hood is used on a polycrystalline silicon reduction furnace, firstly, a tail gas outlet connecting pipe 1 is connected with a tail gas outlet on the reduction furnace, an exhaust pipe 2 is connected with an external tail gas discharge pipe, the reduction furnace discharges tail gas into a tail gas hood main body 5 through the tail gas outlet connecting pipe 1, the tail gas is shunted in the tail gas hood main body 5 through two vent holes and enters a vent pipe 3, then the tail gas is discharged into the external exhaust pipe from the exhaust pipe 2, when the tail gas passes through the vent pipe 3, the tail gas passes through a filter plate 8 arranged in the vent pipe 3, silicon powder in the tail gas is intercepted in the vent pipe 3 by the filter plate 8, when the reduction furnace stops discharging the tail gas, the silicon powder adsorbed on the inner wall of the tail gas hood main body 5 and the silicon powder accumulated in the vent pipe 3 are collected to carry out secondary processing and prevent the silicon powder from blocking the vent pipe 3, at the moment, the square hole sealing plate 11 is turned over from the square hole 12 through the damping hinge, then the handle 61 is held by a hand, the handle 61 is pulled, the support frame 64 connected with the handle 61 and the brush 63 installed on the support frame 64 move inside the tail gas hood main body 5, so that the brush 63 contacted with the inner wall of the tail gas hood main body 5 cleans silicon powder accumulated on the inner wall of the tail gas hood main body 5, the support frame 64 can move the silicon powder cleaned from the inner wall of the tail gas hood main body 5 to the square hole 12, the silicon powder is discharged from the square hole 12 to the tail gas hood main body 5, when the vent pipe 3 and the silicon powder accumulated inside the fixed pipe 7 are required to be cleaned, the limit screw rod 4 is sequentially turned out of the second limit screw hole 10 and the first limit screw hole 9, the vent pipe 3 is drawn out of the fixed pipe 7, and therefore the vent pipe 3 and the silicon powder accumulated inside the fixed pipe 7 can be conveniently cleaned.
The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The anti-blocking type reduction furnace tail gas hood for producing polycrystalline silicon comprises a tail gas hood main body (5) and is characterized in that a tail gas discharge port connecting pipe (1) is arranged on one side of the tail gas hood main body (5), a tail gas hood inner wall cleaning device (6) is connected to the other side of the tail gas hood main body (5), fixed pipes (7) are connected to one side of the front side and the rear side of the tail gas hood main body (5), a square hole (12) is formed in the position, far away from the tail gas discharge port connecting pipe (1), of the bottom end of the tail gas hood main body (5), a square hole sealing plate (11) is connected to the position, close to the square hole (12), of the bottom end of the tail gas hood main body (5), a vent pipe (3) is connected to one side, far away from each other, of the two fixed pipes (7), a first limiting screw hole (9) is formed in the top end of the fixed pipe (7), a position, close to the first limiting screw, the top of breather pipe (3) has been seted up second spacing screw (10), the position that second spacing screw (10) was kept away from on the top of breather pipe (3) is provided with blast pipe (2), filter plate (8) are installed to the inboard of breather pipe (3).
2. The anti-blocking type reduction furnace tail gas hood for producing polycrystalline silicon, according to claim 1, is characterized in that the tail gas hood inner wall cleaning device (6) comprises a support frame (64), brushes (63) are mounted on four sides of one side of the support frame (64), a connecting rod (62) is connected to the middle position of one side of the support frame (64), and a handle (61) is mounted on one side, far away from the support frame (64), of the connecting rod (62).
3. The anti-blocking type reduction furnace tail gas hood for producing polycrystalline silicon, according to claim 2, is characterized in that a round hole is formed in the middle of one side, close to the handle (61), of the tail gas hood main body (5), the connecting rod (62) is arranged inside the round hole, and four brushes (63) arranged on the supporting frame (64) are respectively in contact with the top end, the bottom end and the front side and the rear side of the inner wall of the tail gas hood main body (5).
4. The anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production according to claim 1, wherein the limit screw (4) sequentially penetrates through the inner sides of the first limit screw hole (9) and the second limit screw hole (10), and the vent pipe (3) and the fixed pipe (7) are fixedly connected through the limit screw (4), the first limit screw hole (9) and the second limit screw hole (10).
5. The anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production according to claim 1, wherein a damping hinge is arranged on one side of the joint of the square hole sealing plate (11) and the tail gas hood main body (5), a locking structure is arranged on the other side of the joint of the square hole sealing plate (11) and the tail gas hood main body (5), and a sealing rubber pad is arranged on the joint of the square hole sealing plate (11) and the tail gas hood main body (5).
6. The anti-blocking type reduction furnace tail gas hood for producing polycrystalline silicon according to claim 1, wherein ventilation openings are formed in positions, close to the fixed pipe (7), of the front side and the rear side of the tail gas hood main body (5), the rear portion of one side of the ventilation pipe (3) is arranged inside the fixed pipe (7), and the vertical section of the rear portion of one side of the ventilation pipe (3) is the same as that of the inner wall of the fixed pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827122.2U CN210855293U (en) | 2019-10-28 | 2019-10-28 | Anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921827122.2U CN210855293U (en) | 2019-10-28 | 2019-10-28 | Anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production |
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| Publication Number | Publication Date |
|---|---|
| CN210855293U true CN210855293U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921827122.2U Active CN210855293U (en) | 2019-10-28 | 2019-10-28 | Anti-blocking type reduction furnace tail gas hood for polycrystalline silicon production |
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| CN (1) | CN210855293U (en) |
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- 2019-10-28 CN CN201921827122.2U patent/CN210855293U/en active Active
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