Vacuum furnace heat preservation layer graphite hard felt convenient to maintain
By shortening and cutting the graphite hard felt and pasting it on the burrs of the vacuum furnace, the problem of short service life and difficult maintenance of the graphite hard felt in the vacuum furnace insulation layer is solved, achieving a longer service life and lower maintenance costs.
Patent Information
- Application Number
- CN202421688278.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The existing vacuum furnace insulation layer graphite hard felt has a short service life, and it is difficult and costly to repair the edges after being damaged. The existing maintenance methods include all replacements or partial splicing, both of which have cost and technical difficulties.
Shorten the width of the graphite hard felt, the distance is the thickness of two pieces of graphite hard felt, and stick the cut graphite hard felt onto the bristle edges, using a glossy surface instead of the bristle surface, thereby improving service life and reducing maintenance difficulty and cost.
It extends the service life of graphite hard felt, reduces the difficulty and cost of repair, avoids the high cost of whole-piece replacement, and ensures the effect after repair.
Smart Images
Figure CN222951518U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vacuum furnaces, in particular to a graphite hard felt for a vacuum furnace insulation layer which is easy to maintain. Background Art
[0002] Carbon felt is a felt made of carbon fiber. It has a broad spectrum of adsorption and large capacity. It can be made into graphite hard felt after high-temperature graphitization. Graphite hard felt is mainly used as thermal insulation material for single crystal silicon smelting furnaces. Carbon felt can be used as adsorption purification material, as thermal insulation material for vacuum furnaces and inert gas furnaces. In addition, in areas with strict requirements on strength, stiffness, weight, fatigue properties, and in situations requiring high temperature and high chemical stability, carbon fiber materials have great advantages. The carbon content is about 90%, and the operating temperature is about 1000 degrees Celsius.
[0003] Graphite hard felt is mainly used in high temperature, corrosion resistance, radiation protection and other fields, such as nuclear power plants, liquid vaporizers, etc. It has the characteristics of high purity, high temperature resistance, corrosion resistance, and non-melting of block graphite. It also has the advantages of elasticity, arbitrary folding, cutting and stitching with graphite yarn. Under non-oxidizing gas conditions, the operating temperature of graphite hard felt can reach about 3000℃.
[0004] At present, the insulation layer of the vacuum furnace is directly composed of a whole piece of graphite hard felt. This installation method makes the service life of the graphite hard felt shorter. It starts to be damaged after about two months of use, and it basically needs to be repaired once every six months. The graphite hard felt is damaged at the edge during use, but the middle is still intact. If the graphite hard felt at the edge is damaged, there are currently two ways to repair it: one is to directly replace all of them, but this maintenance method is costly, and each piece of graphite hard felt is expensive. The entire vacuum furnace liner is composed of 20 pieces of graphite hard felt. If all of them are replaced, the price is not cheap. The other is to repair locally, which requires the damaged parts to be gradually spliced and repaired. This method is difficult to repair and requires a high level of technical skills for the maintenance personnel. Therefore, in response to the above problems, a graphite hard felt for the insulation layer of a vacuum furnace that is easy to maintain is proposed. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems raised in the background technology, the current improved technical solution is that the graphite felt of the vacuum furnace insulation layer was originally installed in a whole piece, but now it is changed to shorten the width of the whole piece of graphite felt, and the distance is two pieces of graphite felt thickness. The edge of the original graphite felt is cut into small pieces and glued to the original rough edges, and the rough surface is replaced by the smooth surface. This can increase the service life of the graphite felt, and when the edge is damaged, only a small piece of the modified piece needs to be replaced during maintenance, which greatly reduces the difficulty of maintenance and can also ensure the effect after maintenance. There is no need to replace the entire piece of graphite felt, which greatly reduces the maintenance cost.
[0006] The technical solution adopted by the utility model to solve its technical problem is: the utility model describes a graphite hard felt for vacuum furnace insulation layer that is easy to maintain, comprising a vacuum furnace body; a frame is fixedly arranged in the inner cavity of the vacuum furnace body, a placement groove A is provided in the inner cavity of the frame, a placement groove B is provided on one side of the inner cavity of the frame close to the placement groove A, and a loading assembly is fixedly connected to the rear of the frame.
[0007] Preferably, the loading assembly includes a fixing frame A, the front portion of the fixing frame A is fixedly connected to the rear portion of the frame, the upper, left and right portions of the rear portion of the frame are fixedly connected with connecting strips, and the rear portion of the connecting strips is fixedly connected to a fixing frame B.
[0008] Preferably, the fixing frame A and the fixing frame B are both fixedly arranged in the inner cavity of the vacuum furnace body, the left and right parts of the opposite side of the fixing frame A and the fixing frame B are fixedly connected to the limiting frame, and the opposite sides of the two limiting frames are hingedly connected to the conveying wheels.
[0009] Preferably, fixing rods are fixedly arranged on the upper and lower parts of the left and right side walls of the frame respectively, the inner cavities of the fixing rods are fixedly connected to limiting rods, and the opposite ends of the two limiting rods are fixedly connected to the inner wall of the vacuum furnace body.
[0010] Preferably, a connecting frame is fixedly connected between the sides of the fixing frame A and the fixing frame B, a fixing column is fixedly connected to the upper part of the connecting frame, and the upper part of the fixing column is fixedly connected to the top of the inner cavity of the vacuum furnace body.
[0011] Preferably, a positioning ring is fixedly connected to the surface of the fixing column, and the upper part of the positioning ring is fixedly connected to the top of the inner side wall of the vacuum furnace body.
[0012] Preferably, the surface of the fixing frame B is movably connected with a rib fixing frame.
[0013] Beneficial effects of the utility model:
[0014] 1. The utility model provides a vacuum furnace insulation layer graphite felt which is easy to maintain. By using the above structure, the utility model has the following beneficial effects: the equipment can increase the service life of the graphite felt, and when the edge is damaged, only a small piece of the modified felt needs to be replaced during maintenance, which greatly reduces the difficulty of maintenance and can also ensure the effect after maintenance. There is no need to replace the entire piece of graphite felt, which greatly reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0016] Figure 1 It is an overall stereogram of the utility model;
[0017] Figure 2 This utility model Figure 1 The enlarged stereogram at A in the middle;
[0018] Figure 3 It is a cutaway stereogram in the utility model;
[0019] Figure 4 It is an exploded perspective view of the utility model;
[0020] Figure 5 It is a three-dimensional diagram of the connecting strip in the utility model.
[0021] Legend:
[0022] 1. Vacuum furnace body; 2. Frame; 3. Placement slot A; 4. Placement slot B; 5. Fixing frame A; 6. Connecting strip; 7. Fixing frame B; 8. Limiting frame; 9. Conveying wheel; 10. Fixing rod; 11. Limiting rod; 12. Connecting frame; 13. Fixing column; 14. Positioning ring; 15. Reinforced frame. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Specific examples are given below.
[0025] See also Figure 1 - Figure 5 The utility model provides a graphite hard felt for a vacuum furnace insulation layer which is easy to maintain, comprising a vacuum furnace body 1; a frame 2 is fixedly arranged in the inner cavity of the vacuum furnace body 1, a placement groove A3 is provided in the inner cavity of the frame 2, a placement groove B4 is provided on one side of the inner cavity of the frame 2 close to the placement groove A3, and a loading assembly is fixedly connected to the rear of the frame 2.
[0026] Further, such as Figure 4 and Figure 5 As shown, the loading assembly includes a fixing frame A5, the front of which is fixedly connected to the rear of the frame 2, the upper, left and right parts of the rear of the frame 2 are fixedly connected with connecting strips 6, and the rear of the connecting strips 6 is fixedly connected with a fixing frame B7.
[0027] Further, such as Figure 4As shown, the fixing frame A5 and the fixing frame B7 are both fixedly arranged in the inner cavity of the vacuum furnace body 1, and the left and right parts of the opposite sides of the fixing frame A5 and the fixing frame B7 are fixedly connected with the limiting frame 8, and the opposite sides of the two limiting frames 8 are hingedly connected with the conveying wheel 9.
[0028] Further, such as Figure 1 and Figure 3 As shown, fixing rods 10 are fixedly arranged on the upper and lower parts of the left and right side walls of the frame 2 respectively, and the inner cavity of the fixing rods 10 is fixedly connected to the limiting rods 11, and the opposite ends of the two limiting rods 11 are fixedly connected to the inner wall of the vacuum furnace body 1.
[0029] Further, such as Figure 3 As shown, a connecting frame 12 is fixedly connected between the opposite sides of the fixing frame A5 and the fixing frame B7, a fixing column 13 is fixedly connected to the upper part of the connecting frame 12, and the upper part of the fixing column 13 is fixedly connected to the top of the inner cavity of the vacuum furnace body 1.
[0030] Further, such as Figure 3 As shown, a positioning ring 14 is fixedly connected to the surface of the fixing column 13 , and the upper part of the positioning ring 14 is fixedly connected to the top of the inner wall of the vacuum furnace body 1 .
[0031] Further, such as Figure 3 As shown, the surface of the fixing frame B7 is movably connected with a rib fixing frame 15.
[0032] Working principle: When the felt inside the vacuum furnace body 1 needs to be replaced, open the vacuum furnace body 1, and then disassemble and replace the felt inside the placement slot A3 and the placement slot B4. The equipment can disassemble a single felt according to the needs of the user, thereby increasing the service life of the graphite felt. After the edge is damaged, only a small piece of the modified felt needs to be replaced during maintenance, which greatly reduces the difficulty of maintenance and ensures the effect after maintenance. There is no need to replace the entire piece of graphite felt, which greatly reduces the maintenance cost. When loading is required, it can be manually pushed into the interior of the vacuum furnace body 1, and then the conveying wheel 9 conveys the material that needs vacuum to the interior of the vacuum furnace body 1.
[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A graphite hard felt for vacuum furnace insulation layer that is easy to maintain, comprising a vacuum furnace body (1); characterized in that: The inner cavity of the vacuum furnace body (1) is fixedly provided with a frame (2), the inner cavity of the frame (2) is provided with a placement groove A (3), a placement groove B (4) is provided on a side of the inner cavity of the frame (2) close to the placement groove A (3), and a loading assembly is fixedly connected to the rear of the frame (2).
2. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 1 is characterized by: The loading assembly comprises a fixing frame A (5), the front portion of the fixing frame A (5) being fixedly connected to the rear portion of the frame (2), the upper, left and right portions of the rear portion of the frame (2) being fixedly connected to connecting strips (6), and the rear portion of the connecting strips (6) being fixedly connected to a fixing frame B (7).
3. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 2 is characterized by: The fixing frame A (5) and the fixing frame B (7) are both fixedly arranged in the inner cavity of the vacuum furnace body (1); the left and right parts of the fixing frame A (5) and the fixing frame B (7) on the opposite side are both fixedly connected to the limiting frame (8); and the opposite sides of the two limiting frames (8) are both hingedly connected to the conveying wheel (9).
4. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 1 is characterized by: Fixed rods (10) are fixedly arranged on the upper and lower parts of the left and right side walls of the frame (2), respectively; the inner cavity of the fixed rods (10) is fixedly connected to a limiting rod (11); and opposite ends of the two limiting rods (11) are fixedly connected to the inner wall of the vacuum furnace body (1).
5. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 3 is characterized by: A connecting frame (12) is fixedly connected between the sides of the fixing frame A (5) and the fixing frame B (7) opposite to each other, a fixing column (13) is fixedly connected to the upper part of the connecting frame (12), and the upper part of the fixing column (13) is fixedly connected to the top of the inner cavity of the vacuum furnace body (1).
6. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 5, characterized in that: A positioning ring (14) is fixedly connected to the surface of the fixing column (13), and the upper part of the positioning ring (14) is fixedly connected to the top of the inner wall of the vacuum furnace body (1).
7. The graphite hard felt for vacuum furnace insulation layer that is easy to maintain according to claim 3 is characterized by: The surface of the fixing frame B (7) is movably connected to a rib fixing frame (15).