Clean transition shed arranged on polycrystalline silicon tower platform

Abstract

The utility model discloses a clean transition shed placed on a polycrystalline silicon tower platform, and particularly relates to the field of transition sheds, the clean transition shed comprises a polycrystalline silicon tower body, extension platforms are arranged below manholes of the polycrystalline silicon tower body, a plurality of vertically upward telescopic frames are built on the extension platforms, and the telescopic frames jointly support an isolating membrane body. An expansion pressing mechanism is clamped in a manhole of the polycrystalline silicon tower body, the expansion pressing mechanism presses an opening of the folded thin film cylinder, the expansion pressing mechanism comprises a mounting ring tightly attached to the outer plane of the manhole, a double-gear ring is rotatably mounted on the mounting ring, a protruding part of the mounting ring is fixedly connected with a fixing column, and the fixing column is fixedly connected with the outer plane of the manhole. The fixed column is coaxially and rotatably provided with a driving gear meshed with the double-gear ring, the mounting ring is fixedly provided with a plurality of groups of expansion assemblies which are annularly and uniformly distributed, the plurality of groups of expansion assemblies jointly press the opening of the folded film cylinder on the inner wall of the manhole, and the clean transition shed can be hermetically connected with manholes of polycrystalline silicon towers with different diameters.

Description

Technical Field

[0001] The utility model belongs to the field of transition sheds, and in particular relates to a clean transition shed arranged on a polysilicon tower platform. Background Art

[0002] The polysilicon tower is an important device for producing polysilicon. Polysilicon is a high-purity silicon material. During the manufacturing process, polysilicon needs to go through multiple processes, many of which need to be carried out in a "clean environment". The "clean installation" of the polysilicon tower is the lifeblood of the entire process.

[0003] The internal parts of the polysilicon tower need to be hoisted to the extension platform and then transported to the inside of the polysilicon tower through the manhole for installation. Therefore, a clean transition shed needs to be set up at the manhole to prevent the tower internal parts from being contaminated when removing the packaging, so as to ensure a clean environment inside the tower. However, the temporary clean transition shed is difficult to adapt to the sealing needs of manholes of polysilicon towers with different diameters.

[0004] Therefore, a new type of clean transition shed placed on the polysilicon tower platform is needed. Utility Model Content

[0005] In order to solve the above problems, the utility model discloses a clean transition shed arranged on a polysilicon tower platform.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A clean transition shed placed on a polysilicon tower platform comprises a polysilicon tower body, wherein an extension platform is arranged below the manhole of the polysilicon tower body, wherein the extension platform is constructed with a plurality of vertically upward telescopic frames, and the plurality of telescopic frames jointly support an isolation membrane body, wherein the membrane cylinder of the isolation membrane body leads to the inner cavity of the polysilicon tower body through the manhole, an expansion and clamping mechanism is clamped in the manhole of the polysilicon tower body, and the expansion and clamping mechanism clamps the folded opening of the membrane cylinder, wherein the expansion and clamping mechanism comprises: a mounting ring which is tightly attached to the outer plane of the manhole, wherein the mounting ring is rotatably mounted with a double gear ring, wherein the protruding portion of the mounting ring is fixedly connected with a fixing column, wherein the fixing column is coaxially rotatably mounted with a driving gear meshing with the double gear ring, wherein the mounting ring is fixedly mounted with a plurality of groups of annularly evenly distributed expansion components, and the plurality of groups of expansion components jointly clamp the folded opening of the membrane cylinder against the inner wall of the manhole, and the double gear ring drives all groups of expansion components to move.

[0008] As a preferred technical solution of the utility model, each group of the expansion components includes: a fixed seat and a rotating shaft fixedly connected to the mounting ring, the notch of the fixed seat is slidably connected with a rack, the end of the rack close to the axis of the mounting ring is fixedly connected with a plug-in seat, and the plug-in seat is plugged with an elastic pressure strip, the rotating shaft is coaxially rotated with a connecting gear, and the connecting gear is meshed with the rack and the double gear ring at the same time.

[0009] As a preferred technical solution of the utility model, the socket is plugged with a wedge-shaped insert, and the wedge-shaped insert is fixedly connected to the elastic pressure strip, and a rubber pad is attached to one side of the elastic pressure strip that presses the film cylinder.

[0010] As a preferred technical solution of the utility model, the fixed column coaxial fixed sleeve is provided with a one-way wheel, the fixed column sleeve is provided with a spring, and the spring presses the driving gear and the one-way wheel together, and a one-way annular rotating tooth groove is provided on the side of the one-way wheel that is in contact with the driving gear, and the driving gear is provided with a one-way annular rotating protrusion adapted to the one-way annular rotating tooth groove.

[0011] As a preferred technical solution of the utility model, a hand wheel is coaxially fixedly connected to a side of the driving gear away from the one-way wheel.

[0012] As a preferred technical solution of the utility model, each telescopic frame comprises: a first frame body and a second frame body whose top cross bars are telescopically plugged together, and the bottoms of the first frame body and the second frame body are fixedly connected to the extension platform.

[0013] As a preferred technical solution of the utility model, the bottoms of the first frame and the second frame are fixedly connected with first fixing members, and each first fixing member is spliced ​​with a second fixing member, and the spliced ​​first fixing member and the second fixing member clamp the extension platform.

[0014] The beneficial effects of the utility model are:

[0015] 1. When the expansion and clamping mechanism presses the opening of the folded film cylinder against the inner wall of the manhole, the hand wheel is turned to make the driving gear drive the double gear ring meshing with it to rotate, and the double gear ring drives all expansion components at the same time, and the double gear ring drives the rack to move linearly through the connecting gear, so that the opening of the folded film cylinder of the plug-in seat together with the elastic pressure strip is pressed against the inner wall of the manhole, and at the same time, the unidirectional rotation of the driving gear allows the elastic pressure strip to maintain the state of pressing the film cylinder. Thanks to the setting of the expansion and clamping mechanism, the clean transition shed can be sealed and connected with the manholes of polysilicon towers of different diameters, which improves the versatility of the clean transition shed;

[0016] 2. Use multiple telescopic frames to build a clean transition shed. The length of the clean transition shed can be extended according to actual needs. At the same time, the width of a single telescopic frame is adjustable, which can extend the width of the clean transition shed according to actual needs. Thanks to the modular adjustable design, the flexibility of construction is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the extension platform, telescopic frame, expansion and clamping mechanism and isolation membrane body of the embodiment of the utility model;

[0019] Figure 3 This is a schematic structural diagram of an isolation membrane body according to an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the telescopic frame of an embodiment of the utility model;

[0021] Figure 5 This is a structural schematic diagram of an expansion and clamping mechanism at one angle according to an embodiment of the utility model;

[0022] Figure 6 This is a structural schematic diagram of the expansion and clamping mechanism of the utility model embodiment from another angle;

[0023] Figure 7 This is a schematic diagram of the structure of the mounting ring of the embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the structure of a double gear ring according to an embodiment of the utility model;

[0025] Fig. 9 It is a schematic structural diagram of a rack, a fixing seat, a plug-in seat, a wedge-shaped insert and an elastic pressure strip according to an embodiment of the utility model;

[0026] Fig.10 This is an exploded view of the one-way wheel, driving gear, hand wheel and spring of the embodiment of the utility model;

[0027] Fig.11 For the utility model embodiment Fig.10 Enlarged view of point A in the middle.

[0028] List of Figure Symbols:

[0029] 1. Polysilicon tower; 2. Extension platform;

[0030] 3. telescopic frame; 31. first frame body; 32. second frame body; 33. first fixing member; 34. second fixing member;

[0031] 4. Expansion and clamping mechanism; 41. Mounting ring; 42. Fixing column; 43. Double gear ring; 44. Expansion assembly; 441. Rack; 442. Fixing seat; 443. Plug-in seat; 444. Wedge-shaped insert; 445. Elastic pressure strip; 446. Connecting gear; 447. Rotating shaft; 45. One-way wheel; 46. Driving gear; 47. Hand wheel; 48. Spring;

[0032] 5. Isolation membrane body. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0034] See also Figure 1-11 A clean transition shed placed on a polysilicon tower platform includes a polysilicon tower body 1, and an extension platform 2 is provided below the manhole of the polysilicon tower body 1. The polysilicon tower body 1 is provided with a plurality of horizontal manholes at different heights for transporting the tower internals to the inside of the polysilicon tower body 1. The extension platform 2 is constructed with a plurality of vertically upward telescopic frames 3, and the plurality of telescopic frames 3 jointly support an isolation membrane body 5. A plurality of connecting ropes (not shown in the accompanying drawings) extend from the outer surface of the isolation membrane body 5, and the connecting ropes are tied to the telescopic frames 3, so that the plurality of telescopic frames 3 jointly support the isolation membrane body 5. The interior of the isolation membrane body 5 can be divided into a plurality of independent compartments according to actual needs for dust removal transition.

[0035] Each telescopic frame 3 includes: a first frame body 31 and a second frame body 32 whose top cross bars are telescopically plugged together, and the bottoms of the first frame body 31 and the second frame body 32 are fixedly connected to the extension platform 2. By adjusting the distance between the vertical rods of the first frame body 31 and the second frame body 32, the telescopic frame 3 can be adapted to isolation membrane bodies 5 of different widths. The bottoms of the first frame body 31 and the second frame body 32 are fixedly connected with a first fixing member 33, and each first fixing member 33 is spliced ​​with a second fixing member 34, and the spliced ​​first fixing member 33 and the second fixing member 34 clamp the extension platform 2. The first fixing member 33 and the second fixing member 34 are fixedly connected by bolts.

[0036] The telescopic frame 3 may be provided with lateral support rods fixedly connected to the telescopic frame 3 and the extension platform 2 to improve its stability.

[0037] The film cylinder of the isolation film body 5 leads to the inner cavity of the polysilicon tower body 1 through a manhole, and an expansion and pressing mechanism 4 is clamped in the manhole of the polysilicon tower body 1, and the expansion and pressing mechanism 4 presses the opening of the folded film cylinder. The expansion and pressing mechanism 4 includes: a mounting ring 41 that is close to the outer plane of the manhole, the mounting ring 41 is rotatably mounted with a double gear ring 43, the protruding part of the mounting ring 41 is fixedly connected with a fixed column 42, the fixed column 42 is coaxially rotatably mounted with a driving gear 46 meshing with the double gear ring 43, and the mounting ring 41 is fixedly mounted with several groups of annular evenly distributed expansion components 44, and several groups of expansion components 44 jointly press the opening of the folded film cylinder against the inner wall of the manhole. The double gear ring 43 drives all groups of expansion components 44 to move, and all groups of expansion components 44 are used to expand or shrink at the same time. The number of several groups of expansion components 44 can be three, four, five, etc. The through hole diameter of the mounting ring 41 is larger than the manhole of the polysilicon tower body 1.

[0038] Each expansion assembly 44 includes: a fixed seat 442 and a rotating shaft 447 fixedly connected to the mounting ring 41, and a rack 441 is slidably connected to the notch of the fixed seat 442. The end of the rack 441 close to the axis of the mounting ring 41 is fixedly connected to the plug seat 443, and the plug seat 443 is plugged with an elastic pressure strip 445. A limited position protrusion is provided at the end of the rack 441 away from the plug seat 443, and the rack 441 can only move along the straight line pointing to itself in the notch of the fixed seat 442. The rotating shaft 447 is coaxially rotatably sleeved with a connecting gear 446, and the connecting gear 446 is meshed with the rack 441 and the double gear ring 43 at the same time.

[0039] The socket 443 is plugged with a wedge-shaped insert 444, and the wedge-shaped insert 444 is fixedly connected to the elastic pressure strip 445. The elastic pressure strip 445 is pressed against a rubber pad on one side of the film cylinder. Several elastic pressure strips 445 are assembled into a ring, which is used to evenly press the opening of the film cylinder. The elastic pressure strip 445 can be elastically deformed to fit the inner wall of the manhole, improving the sealing when pressing the film cylinder. The elastic pressure strip 445 in a relaxed state is flat.

[0040] The fixed column 42 is coaxially fixed with a one-way wheel 45, and the fixed column 42 is sleeved with a spring 48, and the spring 48 presses the drive gear 46 and the one-way wheel 45 together, and the one-way wheel 45 is provided with a one-way annular rotating tooth groove on the side where the drive gear 46 is in contact with the one-way wheel 45, and the drive gear 46 is provided with a one-way annular rotating protrusion adapted to the one-way annular rotating tooth groove. Under the pressure of the spring 48, the one-way rotation direction of the drive gear 46 is the direction in which the elastic pressure strip 445 presses the opening of the film cylinder, so that the elastic pressure strip 445 can maintain the state of pressing the film cylinder. The side of the drive gear 46 away from the one-way wheel 45 is coaxially fixedly connected with a hand wheel 47. The hand wheel 47 is used to push the drive gear 46 to rotate, and pull the drive gear 46 to temporarily separate from the one-way wheel 45 for reverse rotation (at this time, the elastic pressure strip 445 gradually moves toward the axis direction of the manhole).

[0041] Working principle:

[0042] When in use, a plurality of telescopic frames 3 are built on the extension platform 2 at the manhole of the polysilicon tower body 1, and the plurality of telescopic frames 3 support the isolation membrane body 5, and the film cylinder of the isolation membrane body 5 passes through the expansion and pressing mechanism 4 and the manhole of the polysilicon tower body 1 to the inner cavity of the polysilicon tower body 1, and the opening of the film cylinder is folded and placed between the expansion and pressing mechanism 4 and the inner wall of the manhole, and then the plurality of expansion components 44 of the expansion and pressing mechanism 4 are moved to press the folded opening of the film cylinder against the inner wall of the manhole, and at the same time, the position of the expansion and pressing mechanism 4 is fixed;

[0043] When the expansion component 44 of the expansion and clamping mechanism 4 moves, the hand wheel 47 is turned to make the driving gear 46 drive the double gear ring 43 meshing with it to rotate, and the double gear ring 43 drives all the expansion components 44 at the same time, and the double gear ring 43 drives the rack 441 to move linearly through the connecting gear 446, so that the connector 443 and the folded film cylinder opening of the elastic pressure strip 445 are pressed against the inner wall of the manhole, and at the same time, the unidirectional rotation of the driving gear 46 allows the elastic pressure strip 445 to maintain the state of pressing the film cylinder.

[0044] It should be noted that the above content only illustrates the technical idea of ​​the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.

Claims

1. A clean transition shed placed on a polysilicon tower platform, comprising a polysilicon tower body (1), wherein an extension platform (2) is arranged below a manhole of the polysilicon tower body (1), characterized in that: The extension platform (2) is constructed with a plurality of telescopic frames (3) extending vertically upward, and the plurality of telescopic frames (3) jointly support an isolation membrane body (5), the membrane cylinder of the isolation membrane body (5) leads to the inner cavity of the polycrystalline silicon tower body (1) through a manhole, an expansion and clamping mechanism (4) is clamped in the manhole of the polycrystalline silicon tower body (1), and the expansion and clamping mechanism (4) clamps the opening of the folded membrane cylinder, and the expansion and clamping mechanism (4) comprises: a mounting ring (41) that is tightly attached to the outer plane of the manhole, and the mounting ring ( 41) is rotatably mounted with a double gear ring (43), the protruding portion of the mounting ring (41) is fixedly connected with a fixing column (42), the fixing column (42) is coaxially rotatably mounted with a driving gear (46) meshing with the double gear ring (43), the mounting ring (41) is fixedly mounted with a plurality of groups of expansion components (44) evenly distributed in an annular shape, and the plurality of groups of expansion components (44) jointly press the folded film cylinder opening against the inner wall of the manhole, and the double gear ring (43) drives all groups of expansion components (44) to move.

2. A clean transition shed placed on a polysilicon tower platform according to claim 1, characterized in that: Each group of the expansion components (44) comprises: a fixed seat (442) fixedly connected to the mounting ring (41) and a rotating shaft (447); a notch of the fixed seat (442) is slidably connected to a rack (441); one end of the rack (441) close to the axis of the mounting ring (41) is fixedly connected to a plug-in seat (443); and the plug-in seat (443) is plugged with an elastic pressure strip (445); the rotating shaft (447) is coaxially rotatably sleeved with a connecting gear (446), and the connecting gear (446) is meshed with the rack (441) and the double gear ring (43) at the same time.

3. A clean transition shed placed on a polysilicon tower platform according to claim 2, characterized in that: The plug-in seat (443) is plugged with a wedge-shaped inserting strip (444), and the wedge-shaped inserting strip (444) is fixedly connected to the elastic pressure strip (445), and a rubber pad is attached to one side of the elastic pressure strip (445) that presses the film cylinder.

4. The clean transition shed placed on the polysilicon tower platform according to claim 1, characterized in that: The fixed column (42) is coaxially fixed with a one-way wheel (45), and the fixed column (42) is sleeved with a spring (48), and the spring (48) presses the driving gear (46) and the one-way wheel (45) together, and a one-way annular rotating tooth groove is provided on the side of the one-way wheel (45) that is in contact with the driving gear (46), and the driving gear (46) is provided with a one-way annular rotating protrusion that is adapted to the one-way annular rotating tooth groove.

5. The clean transition shed placed on the polysilicon tower platform according to claim 4, characterized in that: A hand wheel (47) is coaxially fixedly connected to a side of the driving gear (46) away from the one-way wheel (45).

6. The clean transition shed placed on the polysilicon tower platform according to claim 1, characterized in that: Each telescopic frame (3) comprises a first frame body (31) and a second frame body (32) whose top cross bars are telescopically plugged together, and the bottoms of the first frame body (31) and the second frame body (32) are fixedly connected to the extension platform (2).

7. The clean transition shed placed on the polysilicon tower platform according to claim 6, characterized in that: The bottoms of the first frame (31) and the second frame (32) are both fixedly connected with a first fixing member (33), and each first fixing member (33) is assembled with a second fixing member (34), and the assembled first fixing member (33) and the second fixing member (34) clamp the extension platform (2).

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