CN214300456U

CN214300456U - Graphite sheet bolted connection structure

Info

Publication number: CN214300456U
Application number: CN202023243371.2U
Authority: CN
Inventors: 申富强; 申富胜
Original assignee: Anton Reyna New Materials Jiangsu Co ltd
Current assignee: Anton Reyna New Materials Jiangsu Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-28
Anticipated expiration: 2030-12-29

Abstract

The utility model provides a graphite sheet bolted connection structure, lower heat preservation cylinder for single crystal growing furnace include upper carbon hoop, lower carbon hoop and set up a plurality of graphite connection pieces between upper carbon hoop and lower carbon hoop, the graphite connection piece is connected through graphite sheet bolted connection structure, graphite sheet bolted connection structure includes the connecting lug that sets up on graphite sheet bolt body, lower extreme, set up on graphite sheet bolt body, the screw hole of lower extreme and be used for locking the graphite connection piece and the carbon short bolt of upper carbon hoop, lower carbon hoop; the upper carbon hoop and the lower carbon hoop are provided with connecting through holes for connecting carbon short bolts; and the upper carbon hoop and the lower carbon hoop are respectively provided with a connecting groove for matching the connecting lug. The utility model discloses a graphite flake bolt body is unanimous with the expansion ratio of the graphite connection piece of being connected like this, and the bolt can not fracture, and the cost is saved to this kind of connected mode, firm in connection.

Description

Graphite sheet bolted connection structure

Technical Field

The utility model belongs to the technical field of a single crystal growing furnace heat preservation section of thick bamboo, concretely relates to graphite piece bolted connection structure.

Background

The single crystal furnace is main equipment for producing monocrystalline silicon by adopting a Czochralski method. The single crystal furnace is provided with a heat preservation cylinder which is an important component of a thermal field in the single crystal furnace and is made of graphite, a carbon felt with a certain thickness is wrapped on the outer side surface of the heat preservation cylinder to preserve the heat of the thermal field in the single crystal furnace, and the heat preservation cylinder is divided into an upper heat preservation cylinder, a middle heat preservation cylinder and a lower heat preservation cylinder according to different positions of the thermal field.

At present, the lower heat-insulating cylinder is mostly formed by connecting and assembling carbon-carbon material parts and graphite parts, but at present, the connection of graphite and carbon-carbon materials is mostly completed by connecting long carbon-carbon bolts, and the carbon-carbon bolts can be broken at high temperature due to the fact that the thermal expansion coefficients of graphite and the carbon-carbon materials are different.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a graphite flake bolted connection structure to solve the problem that proposes among the background art.

In order to achieve the above object, the utility model provides a graphite piece bolted connection structure, lower heat preservation cylinder for single crystal growing furnace include upper carbon hoop, lower carbon hoop and set up a plurality of graphite connection pieces between upper carbon hoop and lower carbon hoop, the graphite connection piece is connected through graphite piece bolted connection structure, graphite piece bolted connection structure includes graphite piece bolt body, set up connecting lug, the screw hole that sets up on graphite piece bolt body, lower extreme and is used for locking graphite piece bolt body and upper carbon hoop, the carbon short bolt of lower carbon hoop; the upper carbon hoop and the lower carbon hoop are provided with connecting through holes for connecting carbon short bolts; and the upper carbon hoop and the lower carbon hoop are respectively provided with a connecting groove for matching the connecting lug.

Furthermore, the carbon short bolt penetrates through the connecting through hole of the upper carbon hoop and the lower carbon hoop and is locked in the threaded hole of the graphite sheet bolt body.

Further, the connecting bump is configured as a strip-shaped structure.

Wherein, the screw hole sets up the intermediate position at the connection lug.

Further, the lower extreme of carbon short bolt is provided with the external screw thread with screw hole looks adaptation, carbon short bolt is provided with the smooth section with connect the aperture looks adaptation of through-hole in the top of external screw thread, the top of carbon short bolt is provided with the nut.

Furthermore, connect the via hole including the aperture end that supplies smooth section to connect and the macropore end that supplies the nut to connect, macropore end and aperture end coaxial setting.

Further, the external thread length of the carbon short bolt is 28mm, and the depth of the threaded hole is matched with the external thread length of the carbon short bolt.

Furthermore, semicircular grooves are formed in two sides of the graphite sheet bolt body.

The utility model discloses an above-mentioned technical scheme's beneficial effect as follows: the utility model discloses a graphite flake bolted connection structure adopts graphite flake bolt body and carbon short bolt to replace original long carbon bolt, be provided with at the upper and lower both ends of graphite flake bolt body with carbon short bolt cooperation screw hole, adopt carbon short bolt will go up carbon-carbon hoop, lower carbon-carbon hoop and this body coupling of graphite bolt, graphite flake bolt body is unanimous with the expansion ratio of the graphite connection piece of connecting like this, the bolt can not fracture, this kind of connected mode saves the cost, firm in connection.

Drawings

Fig. 1 is a schematic structural diagram of the graphite sheet bolt body of the present invention.

Fig. 2 is a top view of the graphite sheet bolt body of the present invention.

Fig. 3 is a cross-sectional view taken along a-a of fig. 1.

Fig. 4 is the connection structure diagram of the graphite sheet bolt body and the upper carbon ring hoop and the lower carbon ring hoop of the utility model.

Fig. 5 is a sectional view taken along the direction B-B of fig. 4.

Fig. 6 is a schematic structural diagram of the middle carbon short bolt of the present invention.

Description of reference numerals: 1. a carbon-on-carbon hoop; 2. a lower carbon hoop; 3. a graphite sheet bolt body; 4. a connection bump; 5. a threaded hole; 6. carbon short bolts; 61. an external thread; 62. a smooth section; 63. a nut; 7. a connecting through hole; 71. a large bore end; 72. a small bore end; 8. a semicircular groove.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, a lower thermal insulation cylinder for a single crystal furnace comprises an upper carbon ring hoop 1, a lower carbon ring hoop 2 and a plurality of graphite connecting sheets arranged between the upper carbon ring hoop 1 and the lower carbon ring hoop 2, wherein the graphite connecting sheets are connected with the upper carbon ring hoop 1 and the lower carbon ring hoop 2 through a graphite sheet bolting structure, and the graphite sheet bolting structure comprises a graphite sheet bolt body 3, connecting lugs 4 arranged at the upper end and the lower end of the graphite sheet bolt body 3, threaded holes arranged at the upper end and the lower end of the graphite sheet bolt body 3 and a carbon short bolt 6 for locking the graphite sheet bolt body 3 and the upper carbon ring hoop 1 and the lower carbon ring hoop 2; the upper carbon hoop 1 and the lower carbon hoop 2 are both provided with connecting through holes 7 for connecting carbon short bolts 6; and the upper carbon hoop 1 and the lower carbon hoop 2 are respectively provided with a connecting groove for matching with the connecting lug 4. In this embodiment, the screw hole 5 divides the connection projection 4 into two parts. The utility model discloses a graphite flake bolted connection structure adopts graphite flake bolt body 3 and carbon short bolt 6 to replace original long carbon bolt, be provided with at graphite flake bolt body 3 upper and lower two with carbon short bolt 6 cooperation screw holes, adopt carbon short bolt 6 with last carbon ring hoop 1, lower carbon ring hoop 2 is connected with graphite bolt body 3, graphite flake bolt body 3 is unanimous with the expansion rate of the graphite connection piece of connecting like this, the bolt can not split.

In the utility model discloses further embodiment, carbon short bolt 6 passes the connect through-hole 7 of carbon hoop 1 and carbon hoop 2 down and locks in graphite flake bolt body 3's screw hole 5.

In a further embodiment of the present invention, the connecting projection 4 is provided in an elongated structure.

Wherein the threaded hole 5 is arranged at the middle position of the connecting lug 4.

The utility model discloses in further embodiment, the lower extreme of carbon short bolt 6 is provided with the external screw thread with screw hole 5 looks adaptation, carbon short bolt 6 is provided with the smooth section 62 with connect the aperture looks adaptation of through-hole 7 in the top of external screw thread 61, the top of carbon short bolt 6 is provided with nut 63.

In a further embodiment of the present invention, the connecting through hole 7 comprises a small hole end 72 for connecting the smooth section 62 and a large hole end 71 for connecting the nut 63, and the large hole end 71 is coaxially disposed with the small hole end 72.

In the utility model discloses further embodiment, the external screw thread 61 length of carbon short bolt 6 is 28mm, the degree of depth of screw hole 5 and carbon short bolt 6's external screw thread length looks adaptation.

In a further embodiment of the present invention, the graphite sheet bolt body 3 is provided with semicircular grooves on both sides thereof.

The utility model discloses a working process of specific embodiment: in the use, be provided with the hole that supplies graphite flake bolt body 3 to pass in the graphite connection piece, adopt graphite bolt body 3 and carbon short bolt 6 to realize being connected of graphite connection piece and last carbon ring hoop 1, lower carbon ring hoop 2 later, this kind of connected mode saves the cost, firm in connection.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A graphite sheet bolted connection structure is characterized in that the graphite sheet bolted connection structure comprises a graphite sheet bolt body, connecting lugs arranged at the upper end and the lower end of the graphite sheet bolt body, threaded holes arranged at the upper end and the lower end of the graphite sheet bolt body, and a carbon-carbon short bolt used for locking the graphite sheet bolt body, the upper carbon-carbon hoop and the lower carbon-carbon hoop; the upper carbon hoop and the lower carbon hoop are provided with connecting through holes for connecting carbon short bolts; and the upper carbon hoop and the lower carbon hoop are respectively provided with a connecting groove for matching the connecting lug.

2. The bolted connection structure of graphite sheet according to claim 1, characterized in that, the carbon short bolt passes through the connecting through-hole of upper carbon hoop and lower carbon hoop and locks in the threaded hole of the bolt body of graphite sheet.

3. The bolted connection structure of graphite sheets as claimed in claim 1, wherein said connection projections are provided in an elongated configuration.

4. The bolting structure for graphite plates according to claim 3, wherein said threaded hole is provided at a middle position of said connection projection.

5. The bolted connection structure of graphite sheet according to claim 1, characterized in that, the lower extreme of carbon short bolt is provided with the external screw thread that matches with the screw-threaded hole, carbon short bolt is provided with the smooth section that matches with the aperture of connecting through-hole above the external screw thread, carbon short bolt's top is provided with the nut.

6. The bolted connection structure of graphite sheet according to claim 1, characterized in that, said connecting through-hole includes the aperture end for smooth section connection and the large hole end for nut connection, said large hole end and aperture end are coaxially arranged.

7. The graphite sheet bolt connection structure of claim 1, wherein the length of the external thread of the carbon-carbon short bolt is 28mm, and the depth of the threaded hole is matched with the length of the external thread of the carbon-carbon short bolt.

8. The bolt-connecting structure for graphite plates according to claim 1, wherein semicircular grooves are provided on both sides of the bolt body of graphite plates.