CN220246324U

CN220246324U - Novel guide cylinder

Info

Publication number: CN220246324U
Application number: CN202321953224.5U
Authority: CN
Inventors: 白青松; 刘进
Original assignee: Yangzhou Fangtong Electronic Material Technology Co ltd
Current assignee: Yangzhou Fangtong Electronic Material Technology Co ltd
Priority date: 2023-07-24
Filing date: 2023-07-24
Publication date: 2023-12-26
Anticipated expiration: 2033-07-24

Abstract

The utility model discloses a novel guide cylinder, and relates to the technical field of monocrystalline silicon processing; the utility model comprises a first guide cylinder and a second guide cylinder, wherein the second guide cylinder is positioned in the first guide cylinder; according to the utility model, the carbon felt to be added is placed in the accommodating space, a part of the accommodating space is pre-filled, the carbon felt can be directly pressed through the pressing block arranged on the lower surface of the sealing plate, then the carbon felt is continuously added, the pressing block is used for pressing until the carbon felt is tightly filled in the accommodating space, no additional tools are needed for workers, a first sealing ring is arranged in a first placing groove formed in the sealing plate, the gap between the second guide cylinder and the sealing plate and between the second guide cylinder and the accommodating space is sealed by the first sealing ring, and the gap between the top of the first guide cylinder and the accommodating space is sealed by the second sealing ring arranged in the second placing groove, so that the accommodating space is completely sealed, and the carbon felt in the accommodating space can ensure stable exertion of self heat preservation performance.

Description

Novel guide cylinder

Technical Field

The utility model relates to the technical field of monocrystalline silicon processing, in particular to a novel guide cylinder.

Background

In the production process of the monocrystalline silicon, the production operation is required to be carried out by a Czochralski single crystal furnace, the monocrystalline silicon is generally produced by the Czochralski method, so that the quality of silicon crystals is ensured, energy sources are saved, carbon dioxide emission is reduced, a guide cylinder is generally used in a thermal field of the Czochralski single crystal furnace, the guide cylinder mainly guides high-temperature gas, and the quality of the produced silicon single crystal is ensured to be higher;

application number: "CN202222304310.5" is a new type of guide cylinder. The utility model comprises a first annular guide cylinder and a second annular guide cylinder, wherein the outer diameter of the first guide cylinder is smaller than the inner diameter of the second guide cylinder, the first guide cylinder is coaxially arranged in the second guide cylinder, and the lower parts of the first guide cylinder and the second guide cylinder are contracted and integrally connected; the inner wall of the first guide cylinder and the outer wall of the second guide cylinder form an annular accommodating space, the upper end of the accommodating space is open, the lower end of the accommodating space is closed, and a carbon felt for heat preservation is filled in the accommodating space; according to the utility model, the first guide cylinder and the second guide cylinder are prevented from being integrally formed, the inner guide cylinder and the outer guide cylinder are not provided with mounting gaps, the heat insulation performance is better, meanwhile, falling objects after pulverization of the carbon felt can be blocked, and falling objects can be effectively prevented from falling into molten silicon to influence the crystal pulling quality;

in the above patent, the flange assembly is used for sealing the accommodating space, and the annular felt and the carbon-carbon ring are arranged for sealing, so that the sealing structure is single, and the sealing effect is always gradually reduced along with use; meanwhile, the thermal insulation integral carbon felt or the broken carbon felt is placed in the accommodating space, and workers are required to push the thermal insulation integral carbon felt or the broken carbon felt by adopting additional tools, so that the accommodating space is tightly filled with the carbon felt, and the thermal insulation integral carbon felt is complicated.

In view of the above, the inventors propose a novel guide cylinder for solving the above problems.

Disclosure of Invention

In order to solve the problems of increasing the sealing effect and facilitating filling of the accommodating space; the utility model aims to provide a novel guide cylinder.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a novel draft tube, includes first draft tube and second draft tube, the second draft tube is located inside the first draft tube, inside cavity and first draft tube and the fixed connection in second draft tube bottom of first draft tube and second draft tube, first draft tube and second draft tube are as an organic whole, second draft tube top is higher than first draft tube, and first standing groove has not the gap with second draft tube bottom of integral type, does not have the installation gap between, and cooperation carbon felt thermal insulation performance is better, and second draft tube top is higher than first draft tube, makes things convenient for the logical groove cover on the closing plate to establish on the second draft tube, first draft tube inner wall is formed with the accommodation space with second draft tube outer wall, first draft tube outer wall top is fixed to be equipped with the mounting panel, the mounting panel top is equipped with the closing plate, set up in the middle of the closing plate and set up the logical groove identical with first draft tube top outer wall, the logical groove makes things convenient for the closing plate to run through the second draft tube, first standing groove has been seted up to the first standing groove, first standing groove has been equipped with the first standing groove to have the second sealing washer, and the second sealing washer is close to the second sealing washer, the second sealing washer is equipped with the accommodation space with the second sealing washer, and the second sealing washer is close to the second sealing washer is put down in the accommodation space.

Preferably, the lower surface of the sealing plate is fixedly provided with a pressing block which is matched with the upper end of the accommodating space, the second placing groove is positioned at one end of the pressing block away from the through groove, for the scattered carbon felts, the carbon felts to be added are placed in the accommodating space, a part of the carbon felts are pre-filled, the pressing block arranged on the lower surface of the sealing plate can directly press the carbon felts, then the carbon felts are continuously added, the pressing block is used for pressing until the carbon felts tightly fill the accommodating space, no additional tools are needed for workers, and the pressing block after the use is installed on the guide cylinder along with the sealing plate.

Preferably, the screw thread groove has been seted up jointly to mounting panel and closing plate interval, the screw thread groove of seting up between mounting panel and closing plate is annular distribution, and the screw thread groove of seting up on mounting panel and the closing plate aligns, and the accessible bolt is fixed the completion installation between closing plate and the mounting panel afterwards, the constant head tank has been seted up at the screw thread groove both ends on the mounting panel, the closing plate lateral wall is located the fixed locating piece that is equipped with corresponding with the constant head tank at screw thread groove both ends, the locating piece upper end is parallel with the closing plate upper surface, corresponds the locating piece that sets up on the closing plate and inserts and establish in the constant head tank for the screw thread groove of seting up on mounting panel and the closing plate aligns.

Preferably, counter bores are formed in the outer wall of the mounting plate between the adjacent thread grooves, and the counter bores are connected with the annular felt and the carbon-carbon rings for further sealing.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, a part of carbon felt to be added is placed in the accommodating space, the carbon felt can be directly pressed through the pressing block arranged on the lower surface of the sealing plate, then the carbon felt is continuously added, the pressing block is used for pressing until the carbon felt is tightly filled in the accommodating space, no additional tools are needed for workers, the pressing block after the use is completed is installed on the guide cylinder along with the sealing plate, a first sealing ring is arranged in a first placing groove formed in the sealing plate, the first sealing ring seals gaps between the second guide cylinder and the sealing plate as well as the accommodating space, and a second sealing ring arranged in the second placing groove seals the gaps between the top of the first guide cylinder and the accommodating space, so that the accommodating space is completely sealed, and the carbon felt in the accommodating space can ensure stable exertion of self heat insulation performance.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic cross-sectional structure of a first guide cylinder according to the present utility model.

FIG. 3 is a schematic view of a seal plate according to the present utility model.

In the figure: 1. a first guide cylinder; 11. a second guide cylinder; 12. an accommodating space; 13. a mounting plate; 14. a mounting groove; 15. a sealing plate; 16. a through groove; 17. a first placement groove; 18. a first seal ring; 19. a second placement groove; 20. a second seal ring; 21. pressing blocks; 3. a thread groove; 31. a positioning groove; 32. a positioning block; 33. and (5) countersinking.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: as shown in fig. 1-3, the utility model provides a novel guide cylinder, which comprises a first guide cylinder 1 and a second guide cylinder 11, wherein the second guide cylinder 11 is positioned inside the first guide cylinder 1, the first guide cylinder 1 and the second guide cylinder 11 are hollow, the bottom ends of the first guide cylinder 1 and the second guide cylinder 11 are fixedly connected, an accommodating space 12 is formed between the inner wall of the first guide cylinder 1 and the outer wall of the second guide cylinder 11, an installing plate 13 is fixedly arranged at the top end of the outer wall of the first guide cylinder 1, a sealing plate 15 is arranged above the installing plate 13, a through groove 16 which is identical to the outer wall of the top end of the first guide cylinder 1 is formed in the middle of the sealing plate 15, a first placing groove 17 is formed in the inner wall of the through groove 16, a first sealing ring 18 is arranged in the first placing groove 17, the first sealing ring 18 seals the gap between the second guide cylinder 11 and the sealing plate 15 and the accommodating space 12, an installing groove 14 which is identical to the sealing plate 15 is formed in the first guide cylinder 1 and the installing plate 13, a sealing ring 15 is used for placing the sealing plate 15, a second placing groove 19 is formed in the second placing groove 19 close to the second placing groove 19 and a second sealing ring 20 is formed in the second placing groove 20, and a second placing groove 20 is formed in the second placing groove 19.

The lower surface of the sealing plate 15 is fixedly provided with a pressing block 21 which is matched with the upper end of the accommodating space 12, and the second placing groove 19 is positioned at one end of the pressing block 21 away from the through groove 16.

Through adopting above-mentioned technical scheme, to the fragmentary carbon felt, place the carbon felt that will add in accommodation space 12, partly of prefilling, can directly press the carbon felt through supporting briquetting 21 that closing plate 15 lower surface set up, continue to add the carbon felt afterwards, the rethread supports briquetting 21 and presses until the closely packing accommodation space 12 of carbon felt, need not the staff and adopts extra instrument, supports briquetting 21 after the use will be installed on the draft tube along with closing plate 15.

The first guide cylinder 1 and the second guide cylinder 11 are integrated, and the top end of the second guide cylinder 11 is higher than the first guide cylinder 1.

Through adopting above-mentioned technical scheme, there is not the gap in integral type first draft tube 1 and second draft tube 11 bottom, does not have the installation gap between, and the cooperation carbon felt thermal insulation performance is better, and second draft tube 11 top is higher than first draft tube 1, makes things convenient for logical groove 16 cover on the closing plate 15 to establish on second draft tube 11.

The screw grooves 3 are formed between the mounting plate 13 and the sealing plate 15, and the screw grooves 3 formed between the mounting plate 13 and the sealing plate 15 are distributed in a ring shape.

Through adopting above-mentioned technical scheme, the mounting panel 13 aligns with the screw groove 3 of seting up on the closing plate 15, and then can be through the fixed installation of accomplishing between closing plate 15 and mounting panel 13 with the bolt.

Positioning grooves 31 are formed in the mounting plate 13 and located at two ends of the thread groove 3, positioning blocks 32 corresponding to the positioning grooves 31 are fixedly arranged on the side walls of the sealing plate 15 and located at two ends of the thread groove 3, and the upper ends of the positioning blocks 32 are parallel to the upper surface of the sealing plate 15.

Through adopting above-mentioned technical scheme, with locating piece 32 that sets up on the closing plate 15 corresponding to insert and establish in constant head tank 31 for mounting panel 13 aligns with the screw groove 3 of seting up on the closing plate 15.

A counter bore 33 is formed between the adjacent thread grooves 3 on the outer wall of the mounting plate 13.

By adopting the technical scheme, the counter bore 33 is connected with the annular felt and the carbon-carbon ring for further sealing.

Working principle: when the sealing plate is used, a part of carbon felt to be added is placed in the accommodating space 12, the carbon felt can be directly pressed through the pressing block 21 arranged on the lower surface of the sealing plate 15, then the carbon felt is continuously added, the pressing block 21 is used for pressing until the carbon felt tightly fills the accommodating space 12, then the positioning block 32 arranged on the sealing plate 15 can be correspondingly inserted in the positioning groove 31, the mounting plate 13 is aligned with the thread groove 3 arranged on the sealing plate 15, then the sealing plate 15 and the mounting plate 13 can be fixedly arranged through bolts, the first sealing ring 18 is arranged in the first placing groove 17 arranged on the sealing plate 15, gaps between the second guide cylinder 11 and the sealing plate 15 and the accommodating space 12 are sealed through the first sealing ring 18, and gaps between the top of the first guide cylinder 1 and the accommodating space 12 are sealed through the second sealing ring 20 arranged in the second placing groove 19, so that the accommodating space 12 is completely sealed, the carbon felt in the accommodating space 12 can be ensured to stably exert self-heat insulation performance, and then the counter bore 33 is further sealed with annular carbon felt.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a novel draft tube, includes first draft tube (1) and second draft tube (11), its characterized in that: the utility model discloses a sealing device for the air conditioner, including first guide cylinder (1), second guide cylinder (11), sealing plate (15), through groove (16) identical with first guide cylinder (1) top outer wall are offered in department in the middle of sealing plate (15), first standing groove (17) have been offered to through groove (16) inner wall, be equipped with first sealing washer (18) in first standing groove (17), first guide cylinder (1) and sealing plate (13) set up with sealing plate (15) identical mounting groove (14) are offered to sealing plate (15) outer wall, sealing plate (15) lower surface is close to and has seted up second standing groove (19), second standing groove (20) are offered in sealing plate (15) lower surface.

2. A novel guide cylinder as claimed in claim 1, wherein the lower surface of the sealing plate (15) is fixedly provided with a pressing block (21) which is matched with the upper end of the accommodating space (12), and the second placing groove (19) is positioned at one end of the pressing block (21) far away from the through groove (16).

3. A novel guide cylinder according to claim 1, wherein the first guide cylinder (1) and the second guide cylinder (11) are integrated, and the top end of the second guide cylinder (11) is higher than the first guide cylinder (1).

4. A novel guide cylinder as claimed in claim 1, characterized in that the mounting plate (13) and the sealing plate (15) are provided with thread grooves (3) together, and the thread grooves (3) provided between the mounting plate (13) and the sealing plate (15) are distributed in a ring shape.

5. The novel guide cylinder as claimed in claim 4, wherein positioning grooves (31) are formed in the mounting plate (13) and located at two ends of the thread groove (3), positioning blocks (32) corresponding to the positioning grooves (31) are fixedly arranged on the side walls of the sealing plate (15) and located at two ends of the thread groove (3), and the upper ends of the positioning blocks (32) are parallel to the upper surface of the sealing plate (15).

6. A novel guide shell according to claim 1, wherein counter bores (33) are formed between adjacent thread grooves (3) on the outer wall of the mounting plate (13).