Gradient density graphite thermal field insulation cylinder

Abstract

The utility model discloses a gradient density graphite thermal field thermal insulation cylinder, which comprises a graphite cylinder main body, a top cover plate is inserted at the upper end of the graphite cylinder main body, a bottom cover plate is inserted at the lower end of the graphite cylinder main body, two hexagon bolts are fixedly arranged between the top cover plate and the bottom cover plate, and the number of the hexagon bolts is two. The graphite cylinder main body comprises a graphite inner cylinder, a reinforced bending cylinder, a heat preservation bending cylinder, a heat insulation bending cylinder and a graphite outer cylinder, the reinforced bending cylinder is arranged in a groove in the graphite inner cylinder, and the heat preservation bending cylinder is arranged in the reinforced bending cylinder. According to the gradient density graphite thermal field heat preservation barrel, the top cover plate, the bottom cover plate and the hexagon bolts are matched with the graphite barrel body, so that the gradient density graphite thermal field heat preservation barrel can be disassembled and recombined, when one layer of graphite barrel is damaged, the whole graphite barrel does not need to be replaced, the maintenance and replacement cost is reduced, and the working efficiency is improved. And the splitting and combining process is convenient, and the splitting and combining mode is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to graphite heat preservation cylinder structure technical field, especially in a gradient density graphite heat field heat preservation cylinder. BACKGROUND

[0002] Graphite heat preservation cylinder, also known as graphite heat preservation cover, is a kind of heat preservation equipment widely used in single crystal furnace graphite heat field system, graphite heat preservation cylinder is usually made of graphite material, and can be wrapped by multilayer graphite carbon felt, the number of layers is determined according to actual process and customer requirement, gradient density graphite heat field heat preservation cylinder is important component in photovoltaic industry, gradient density graphite heat field heat preservation cylinder plays a key protection and heat preservation role in furnace heat field, helps to maintain the stability of heat field system, effectively prevents internal heat conduction to the outside, provides stable thermal environment for silicon wafer crystal pulling process.

[0003] The structure name of gradient density graphite heat field heat preservation cylinder mainly includes outer cylinder, inner cylinder, fixed plate, reinforcing layer, heat preservation layer, temperature insulation layer, perforation, assembly pipe, valve and gas feeding device etc.;Gradient density graphite heat field heat preservation cylinder structure in prior art is generally integrally formed, plays the role of heat preservation and heat insulation through graphite cylinder combined with different densities, there are problems when gradient density graphite heat field heat preservation cylinder is overhauled and replaced, gradient density graphite heat field heat preservation cylinder cannot be disassembled and recombined, when one layer of graphite cylinder is damaged, the whole needs to be replaced, and the cost of overhauling and replacing is high. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a gradient density graphite heat field heat preservation cylinder, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A gradient density graphite heat field heat preservation cylinder, comprising a graphite cylinder main body, a top cover plate is inserted at the upper end of the graphite cylinder main body, a bottom cover plate is inserted at the lower end of the graphite cylinder main body, a hexagonal bolt is fixedly installed between the top cover plate and the bottom cover plate, and the number of hexagonal bolts installed is two.

[0007] Preferably, the graphite cylinder main body comprises a graphite inner cylinder, a reinforcing bent cylinder, a heat preservation bent cylinder, a temperature insulation bent cylinder and a graphite outer cylinder.

[0008] Preferably, the reinforcing bent cylinder is arranged in the internal groove of the graphite inner cylinder, the heat preservation bent cylinder is arranged in the interior of the reinforcing bent cylinder, the temperature insulation bent cylinder is arranged in the interior of the heat preservation bent cylinder, and the graphite outer cylinder is arranged in the interior of the temperature insulation bent cylinder.

[0009] Preferably, the top cover plate comprises an upper plate frame, a first gear ring, a limiting through hole and a first mounting through hole, the first gear ring is fixedly installed on the lower surface of the upper plate frame, the limiting through hole is arranged on the lower surface of the upper plate frame near the two ends, the first mounting through hole is arranged on the side surface of the upper plate frame near the two ends, the lower end of the first gear ring is inserted into the graphite inner cylinder and located at the upper end, and the first gear ring is located between the graphite inner cylinder and the graphite outer cylinder.

[0010] Preferably, the bottom cover plate comprises a lower plate frame, a second gear ring, a circular through hole and a second mounting through hole, the second gear ring is fixedly installed on the upper surface of the lower plate frame, the circular through hole is arranged on the upper surface of the lower plate frame near the two ends, the second mounting through hole is arranged on the side surface of the lower plate frame near the two ends, the upper end of the second gear ring is inserted into the graphite inner cylinder and located at the lower end, and the second gear ring is located between the graphite inner cylinder and the graphite outer cylinder.

[0011] Preferably, the hexagonal bolt comprises a hexagonal screw rod, a hexagonal nut, a spring washer and a rubber washer.

[0012] Preferably, the upper end of the hexagonal screw rod is inserted into the interior of the limiting through hole, the lower end of the hexagonal screw rod is inserted into the interior of the circular through hole, the hexagonal nut is sleeved on the lower end of the hexagonal screw rod, the spring washer and the rubber washer are sleeved on the outer side of the hexagonal screw rod, the spring washer is located above the hexagonal nut, the rubber washer is located above the spring washer, and the lower plate frame is located above the rubber washer.

[0013] The graphite cylinder main body, the top cover plate, the bottom cover plate and the hexagonal bolt are cooperated to make the gradient density graphite heat field heat preservation cylinder capable of being disassembled and recombined, when one layer of the graphite cylinder is damaged, the whole does not need to be replaced, the maintenance and replacement cost is saved, and the disassembly and assembly process is convenient and simple. ACCURATE DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the gradient density graphite heat field heat preservation cylinder.

[0015] Figure 2 It is a graphite cylinder main body structure exploded view of the gradient density graphite heat field heat preservation cylinder.

[0016] Figure 3 It is a top cover plate structure schematic view of the gradient density graphite heat field heat preservation cylinder.

[0017] Figure 4 It is a top cover plate structure schematic view of the gradient density graphite heat field heat preservation cylinder.

[0018] Figure 5 The utility model relates to a gradient density graphite heat field heat preservation cylinder Figure 4 The enlarged schematic view of part A.

[0019] In the figure: 1, graphite cylinder main body; 101, graphite inner cylinder; 102, reinforced bending cylinder; 103, heat preservation bending cylinder; 104, temperature insulation bending cylinder; 105, graphite outer cylinder; 2, top cover plate; 201, upper plate frame; 202, No. 1 gear ring; 203, limiting through hole; 204, No. 1 mounting through hole; 3, bottom cover plate; 301, lower plate frame; 302, No. 2 gear ring; 303, circular through hole; 304, No. 2 mounting through hole; 4, hexagonal bolt; 401, hexagonal screw rod; 402, hexagonal nut; 403, spring washer; 404, rubber washer. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0021] As Figures 1-5 shown, a gradient density graphite heat field heat preservation cylinder, including graphite cylinder main body 1, the upper end of graphite cylinder main body 1 is inserted with top cover plate 2, the lower end of graphite cylinder main body 1 is inserted with bottom cover plate 3, top cover plate 2 and bottom cover plate 3 are fixedly installed with hexagonal bolt 4, the number of hexagonal bolt 4 installation is two, top cover plate 2, bottom cover plate 3 and hexagonal bolt 4 cooperate graphite cylinder main body 1 so that the gradient density graphite heat field heat preservation cylinder can be split and recombined, when one layer graphite cylinder is damaged, the whole does not need to be replaced, saves and reduces the overhaul replacement cost, and the split combination process is convenient, and the split combination mode is simple.

[0022] In the embodiment, graphite cylinder main body 1 includes graphite inner cylinder 101, reinforced bending cylinder 102, heat preservation bending cylinder 103, temperature insulation bending cylinder 104 and graphite outer cylinder 105.

[0023] In the embodiment, reinforced bending cylinder 102 is arranged in the inner groove of graphite inner cylinder 101, heat preservation bending cylinder 103 is arranged in the inside of reinforced bending cylinder 102, temperature insulation bending cylinder 104 is arranged in the inside of heat preservation bending cylinder 103, graphite outer cylinder 105 is arranged in the inside of temperature insulation bending cylinder 104, reinforced bending cylinder 102, heat preservation bending cylinder 103, temperature insulation bending cylinder 104 and graphite outer cylinder 105 cannot rotate in graphite inner cylinder 101, and are more closely sleeved.

[0024] In the embodiment, the top cover plate 2 comprises an upper plate frame 201, a first gear ring 202, a limiting through hole 203 and a first mounting through hole 204. The first gear ring 202 is fixedly installed on the lower surface of the upper plate frame 201. The limiting through hole 203 is arranged on the lower surface of the upper plate frame 201 near the two ends. The first mounting through hole 204 is arranged on the side surface of the upper plate frame 201 near the two ends. The lower end of the first gear ring 202 is inserted into the graphite inner cylinder 101 at the upper end. The first gear ring 202 is located between the graphite inner cylinder 101 and the graphite outer cylinder 105.

[0025] In the embodiment, the bottom cover plate 3 comprises a lower plate frame 301, a second gear ring 302, a circular through hole 303 and a second mounting through hole 304. The second gear ring 302 is fixedly installed on the upper surface of the lower plate frame 301. The circular through hole 303 is arranged on the upper surface of the lower plate frame 301 near the two ends. The second mounting through hole 304 is arranged on the side surface of the lower plate frame 301 near the two ends. The upper end of the second gear ring 302 is inserted into the graphite inner cylinder 101 at the lower end. The second gear ring 302 is located between the graphite inner cylinder 101 and the graphite outer cylinder 105. When the gradient density graphite heat field insulation cylinder is installed, the bolt passes through the first mounting through hole 204 and the second mounting through hole 304 and is installed at the mounting position of the gradient density graphite heat field insulation cylinder.

[0026] In the embodiment, the hexagonal bolt 4 comprises a hexagonal screw rod 401, a hexagonal nut 402, a spring washer 403 and a rubber washer 404.

[0027] In the embodiment, the upper end of the hexagonal screw 401 is inserted into the inside of the limiting through hole 203, the lower end of the hexagonal screw 401 is inserted into the inside of the circular through hole 303, the hexagonal nut 402 is sleeved on the lower end of the hexagonal screw 401, the spring washer 403 and the rubber washer 404 are sleeved on the outer side of the hexagonal screw 401, the spring washer 403 is located above the hexagonal nut 402, the rubber washer 404 is located above the spring washer 403, and the lower plate frame 301 is located above the rubber washer 404, when it is necessary to disassemble and overhaul the gradient density graphite heat field insulation cylinder, the gradient density graphite heat field insulation cylinder is first disassembled, the hexagonal nut 402 at the lower end of the hexagonal screw 401 is unscrewed, the hexagonal screw 401 in the limiting through hole 203 and the circular through hole 303 is pulled out, then the first gear ring 202 and the second gear ring 302 are pulled out from the graphite inner cylinder 101, the damaged parts of the graphite inner cylinder 101, the reinforced bending cylinder 102, the insulation bending cylinder 103, the temperature insulation bending cylinder 104 and the graphite outer cylinder 105 are replaced, the first gear ring 202 and the second gear ring 302 are inserted into the inside of the graphite inner cylinder 101 again, the graphite cylinder main body 1 is clamped again, the hexagonal screw 401 is inserted into the limiting through hole 203 and the circular through hole 303 again, then the hexagonal nut 402, the spring washer 403 and the rubber washer 404 are sleeved on the lower end of the hexagonal screw 401, until the hexagonal nut 402 is tightened, and the spring washer 403 and the rubber washer 404 prevent the hexagonal nut 402 from slipping off.

[0028] The protection scope of the utility model is not limited to the above embodiment and its transformation. The routine modification and replacement of the person skilled in the art on the basis of the content of the embodiment all belong to the protection scope of the utility model.

Claims

1. A gradient density graphite hot zone susceptor, characterized by: Including graphite cylinder body (1), the upper end of graphite cylinder body (1) is inserted with top cover plate (2), the lower end of graphite cylinder body (1) is inserted with bottom cover plate (3), hexagonal bolt (4) is fixedly installed between top cover plate (2) and bottom cover plate (3), the number of hexagonal bolt (4) installed is two; The graphite cylinder body (1) includes a graphite inner cylinder (101), a reinforced bent cylinder (102), a heat preservation bent cylinder (103), a temperature insulation bent cylinder (104), and a graphite outer cylinder (105); The reinforced bent cylinder (102) is arranged in the inner groove of the graphite inner cylinder (101), the heat preservation bent cylinder (103) is arranged in the inner part of the reinforced bent cylinder (102), the temperature insulation bent cylinder (104) is arranged in the inner part of the heat preservation bent cylinder (103), and the graphite outer cylinder (105) is arranged in the inner part of the temperature insulation bent cylinder (104); The top cover plate (2) includes an upper plate frame (201), a first gear ring (202), a limiting through hole (203), and a first mounting through hole (204), the first gear ring (202) is fixedly installed on the lower surface of the upper plate frame (201), the limiting through hole (203) is arranged on the lower surface of the upper plate frame (201) near both ends, the first mounting through hole (204) is arranged on the side surface of the upper plate frame (201) near both ends, the lower end of the first gear ring (202) is inserted into the inner part of the graphite inner cylinder (101) at the upper end, and the first gear ring (202) is located between the graphite inner cylinder (101) and the graphite outer cylinder (105); The bottom cover plate (3) includes a lower plate frame (301), a second gear ring (302), a circular through hole (303), and a second mounting through hole (304), the second gear ring (302) is fixedly installed on the upper surface of the lower plate frame (301), the circular through hole (303) is arranged on the upper surface of the lower plate frame (301) near both ends, the second mounting through hole (304) is arranged on the side surface of the lower plate frame (301) near both ends, the upper end of the second gear ring (302) is inserted into the inner part of the graphite inner cylinder (101) at the lower end, and the second gear ring (302) is located between the graphite inner cylinder (101) and the graphite outer cylinder (105); The hexagonal bolt (4) includes a hexagonal screw rod (401), a hexagonal nut (402), a spring washer (403), and a rubber washer (404); The upper end of the hexagonal screw rod (401) is inserted into the inner part of the limiting through hole (203), the lower end of the hexagonal screw rod (401) is inserted into the inner part of the circular through hole (303), the hexagonal nut (402) is sleeved on the lower end of the hexagonal screw rod (401), the spring washer (403) and the rubber washer (404) are sleeved on the outer side of the hexagonal screw rod (401), the spring washer (403) is located above the hexagonal nut (402), the rubber washer (404) is located above the spring washer (403), and the lower plate frame (301) is located above the rubber washer (404).

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