Fixing device for cleaning graphite plate

Abstract

The utility model provides a fixing device for cleaning a graphite plate. The fixing device comprises a partition plate, a connecting piece and a fixing piece. The number of the partition plates is at least two, all the partition plates are arranged in parallel, each partition plate is provided with at least four connecting holes, and a fixing space used for fixing a graphite plate is formed between every two adjacent partition plates. The connecting pieces penetrate through the connecting holes in the partition plates, and the partition plates are connected together through the connecting pieces. The connecting piece comprises a connecting part located between the adjacent partition plates; the fixing piece sleeves the outer side of the connecting part, one end of the fixing piece is propped against one partition plate, and the other end of the fixing piece is propped against the other partition plate; the fixing piece has a first state of expanding during water absorption and a second state of shrinking during dehydration. According to the fixing device, by arranging the multiple partition plates and the connecting pieces, the multiple graphite plates can be well fixed. A fixing piece is arranged in the fixing device, so that the graphite plate can be fixed and detached by utilizing water absorption in the cleaning process and dehydration in the drying process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of post-processing of crystal growth equipment, and particularly relates to a fixing device for graphite plate cleaning. BACKGROUND

[0002] In the process of growing silicon carbide crystals, graphite plates are needed, which are in the shape of a round sheet and are placed in a graphite crucible in the growth of silicon carbide crystals. When the crystals grow, the SiC powder loaded in the graphite crucible is deposited through the graphite plate under high temperature, and the graphite plate mainly plays a role of blocking raw materials.

[0003] The graphite plate can be reused, and after the process of growing crystals is completed, the graphite plate needs to be cleaned before being used again. In the prior art, the graphite plate can only be cleaned manually, which is low in cleaning efficiency and cannot meet the production demand. Meanwhile, the graphite plate is prone to damage during cleaning because it cannot be fixed well. CONTENT OF THE INVENTION

[0004] To solve the above problems, the present application provides a fixing device for graphite plate cleaning, which can fix the graphite plate during cleaning.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The fixing device for graphite plate cleaning provided in the embodiments of the present application is used for fixing the graphite plate during cleaning, and the fixing device comprises a partition plate, a connecting piece and a fixing piece.

[0007] The partition plate comprises at least two plates, and all the partition plates are arranged in parallel. Each partition plate is provided with at least four connecting holes, and the adjacent partition plates form a fixing space for fixing the graphite plate.

[0008] The connecting piece is arranged through the connecting holes on the partition plate, and the connecting piece connects the partition plates together. The connecting piece comprises a connecting portion between the adjacent partition plates.

[0009] The fixing piece is sleeved outside the connecting portion, one end of the fixing piece abuts against one partition plate, and the other end of the fixing piece abuts against another partition plate. The fixing piece comprises a first state of swelling when absorbing water and a second state of shrinking when dehydrating.

[0010] Further, the fixing piece comprises end plates arranged on two sides, a water-permeable membrane and a filler. The water-permeable membrane is connected between the two end plates, and the two end plates and the water-permeable membrane enclose a filling cavity. The filler is filled in the filling cavity, and the filler comprises a water-absorbing and swelling filler.

[0011] Further, the fixing member further comprises a limiting rod limiting the distance between the two end plates, the limiting rod is arranged between the two end plates, and the limiting rod is arranged on the inner side or the outer side of the water permeable membrane.

[0012] Further, the limiting rod is arranged on the inner side of the water permeable membrane.

[0013] Further, the fixing member comprises at most six limiting rods, and the limiting rods are made of polytetrafluoroethylene.

[0014] Further, the end plates are made of polytetrafluoroethylene, the water permeable membrane is a polytetrafluoroethylene elastic porous membrane, and at least part of the filler is water-absorbing resin.

[0015] Further, the filler further comprises a water-stable filler.

[0016] Further, the partition plate is a U-shaped partition plate.

[0017] Further, the surface of the partition plate is provided with a polytetrafluoroethylene coating, and the surface of the connecting member is provided with a polytetrafluoroethylene coating.

[0018] Further, the partition plate is made of polytetrafluoroethylene, and the connecting member is made of polytetrafluoroethylene.

[0019] Therefore, the present application has at least the following beneficial effects:

[0020] 1. The fixing device in the present application comprises a partition plate and a connecting member, and the partition plate and the connecting member can be assembled to achieve good fixation of the graphite plate during cleaning;

[0021] 2. The fixing device in the present application can achieve good fixation of multiple graphite plates by arranging multiple partition plates;

[0022] 3. In the present application, the fixing device is provided with a fixing member, which can achieve fixation and disassembly of the graphite plate by absorbing water during cleaning and dehydration during drying. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a structural schematic diagram of the fixing device in an embodiment of the present application;

[0024] Figure 2 FIG. 2 is a structural schematic diagram of the partition plate in an embodiment of the present application;

[0025] Figure 3 FIG. 3 is a structural schematic diagram of the fixing device in another embodiment of the present application;

[0026] Figure 4 FIG. 4 is a sectional view of the fixing member in an embodiment of the present application along the A-A direction in the first state; Figure 3 ​

[0027] Figure 5 is a sectional view along the direction of A-A in one embodiment of the present application when the fixing member is in the second state; Figure 3 is a sectional view along the direction of A-A in one embodiment of the present application when the fixing member is in the second state;

[0028] Figure 6 is a sectional view along the direction of B-B in one embodiment of the present application when the fixing member is not filled with the filler; Figure 3 is a sectional view along the direction of B-B in one embodiment of the present application when the fixing member is not filled with the filler;

[0029] Figure 7 is a sectional view along the direction of B-B in one embodiment of the present application when the fixing member is filled with the filler; Figure 3 is a sectional view along the direction of B-B in one embodiment of the present application when the fixing member is filled with the filler;

[0030] Figure 8 is a sectional view along the direction of A-A in another embodiment of the present application when the fixing member is in the second state; Figure 3 is a sectional view along the direction of A-A in another embodiment of the present application when the fixing member is in the second state;

[0031] Figure 9 is a sectional view along the direction of B-B in another embodiment of the present application when the fixing member is in the second state; Figure 3 is a sectional view along the direction of B-B in another embodiment of the present application when the fixing member is in the second state;

[0032] In the figure: fixing device 100, partition plate 11, connecting hole 111, connecting piece 12, connecting part 121, fixing member 13, end plate 131, water permeable membrane 132, filler 133, limiting rod 134, fixing space 101, filling cavity 102. DETAILED DESCRIPTION

[0033] In order to make the personnel in the art better understand the scheme of the present application, the technical scheme in the specific embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. In the description of the present application, if a part has a central axis or a hollow chamber, the "inner side" of the part refers to the side of the part close to the central axis of the part or arranged inside the hollow chamber; the "outer side" of the part refers to the side of the part away from the central axis of the part or arranged outside the hollow chamber.

[0034] The fixing device 100 provided by the present application embodiment can fix the graphite plate well when the graphite plate is cleaned. As shown in the figure, the fixing device 100 comprises a partition plate 11, a connecting piece 12 and a fixing member 13. At least two partition plates 11 are included in the fixing device 100, and the partition plates 11 cooperate with each other, so that a fixing space 101 for fixing the graphite plate can be formed between the adjacent partition plates 11, and the graphite plate can be clamped and fixed in the fixing space 101 by the adjacent partition plates 11. Figure 1 Figure 2 ​As shown, the partition 11 is provided with at least four connecting holes 111, and the connector 12 can pass through the connecting holes 111 of the partition 11 and connect and fix the partitions 11 together. The connector 12 can improve the stability of the entire fixing device 100, and can form a stable whole between the partitions 11 in the fixing device 100. At the same time, the connector 12 can also improve the stability of the fixed space 101 between the partitions 11, avoid changes in the fixed space 101 due to water flow impact and the like, and improve the stability of the graphite plate during the cleaning process, ensuring that the graphite plate can be in a relatively stable state during the cleaning process. During the cleaning process, the fixing device 100 can fix the graphite plate well, avoid displacement of the graphite plate due to water flow impact during the cleaning process, avoid bumps on the graphite plate, and free the operator's hands, thereby improving the degree of automation of graphite plate cleaning. As shown Figure 3 As shown, the connecting member 12 forms a connecting portion 121 in the fixed space 101 between adjacent partitions 11, and the fixing member 13 is sleeved on the outside of the connecting portion 121. Specifically, one end of the fixing member 13 abuts against one partition 11, and the other end of the fixing member 13 abuts against the other partition 11. The fixing member 13 includes Figure 4 The first state shown and Figure 5 The second state is shown. In the first state, the fixing member 13 absorbs water and expands, and in the second state, the fixing member 13 dehydrates and shrinks. In the first state, the fixing member 13 can support the graphite plate due to the expansion caused by water absorption, thereby fixing the graphite plate and fixing the graphite plate well to the fixed space 101. In the second state, the fixing member 13 can no longer support the graphite plate due to dehydration and shrinkage, so that the graphite plate has a certain amount of space for movement, and the graphite plate can be easily taken out of the fixed space 101. Specifically, in the present application, the fixing member 13 can be expanded by injecting water into the fixing member 13, and similarly, the fixing member 13 can be shrunk by draining the water in the fixing member 13. In addition, the fixing member 13 can also control the width of the fixed space 101 formed by the adjacent partitions 11. The fixing member 13 of the corresponding size can be selected according to the thickness of the graphite plate, which can better improve the fixing effect of the fixing device 100 on the graphite plate. A corresponding number of fixing members 13 may also be selected according to the size of the graphite plate. In a fixed space 101, only one fixing member 13 may be provided, or multiple fixing members 13 may be provided. It is only necessary that the fixing member 13 can fix the graphite plate when it is in the first state and provide the graphite plate with space for movement when it is in the second state.

[0035] As an optional implementation, Figure 6As shown, the fixing member 13 includes an end plate 131 and a water-permeable membrane 132. The end plates 131 are located on both sides of the fixing member 13, and the water-permeable membrane 132 is connected between the end plates 131 on both sides. A filling cavity 102 can be enclosed between the end plates 131 and the water-permeable membrane 132 on both sides. As shown in Figure 7, the fixing member 13 also includes a filler 133, and the filler 133 is filled in the filling cavity 102. The filler 133 includes at least part of a water-absorbing and swelling filler. The water-absorbing and swelling filler can be an inorganic filler that increases in volume after absorbing water, such as clay mineral particles including montmorillonite. The water-absorbing and swelling filler can also be polymer resin particles that increase in volume after absorbing water, such as polyacrylic resin particles. The water-permeable membrane 132 is provided with through holes with a certain pore size. These through holes can allow water to pass through without allowing the filler 133 to pass through, while allowing water to pass through and preventing the filler 133 placed therein from leaking out. In the first state (such as Figure 4 As shown in FIG, water enters the filling cavity 102 through the water-permeable membrane 132, and the water-swellable filler in the filler 133 absorbs water and expands, and the entire filling cavity 102 expands. Figure 5 As shown in FIG, the water-swelling filler in the filler 133 dehydrates, the filler 133 shrinks, and the water is discharged from the filling cavity 102 through the water-permeable membrane 132 to the outside of the filling cavity 102, and the entire filling cavity 102 shrinks.

[0036] As an optional implementation, Figure 8 and Figure 9 As shown, the fixing member 13 also includes a limiting rod 134 that limits the distance between the two end plates 131. The limiting rod 134 is disposed between the two end plates 131 and is located on either the inner or outer side of the water-permeable membrane 132. Specifically, one end of the limiting rod 134 is connected to one end plate 131, and the other end of the limiting rod 134 is connected to the other end plate 131. The addition of the limiting rod 134 between the two end plates 131 prevents the fixing member 13 from expanding along the connecting rod, thus preventing the partition 11 from being pushed open and displaced due to the fixing member 13 expanding along the connecting member 12 after absorbing water. The limiting rod 134 can limit the expansion of the fixing part 13 along the direction of the connecting part 12. The limiting rod 134 limits the fixing part 13 to expand only in the direction perpendicular to the connecting rod 12, so that the fixing part 13 can only apply pressure to the graphite plate and fix the graphite plate without exerting force on the partition 11, thereby avoiding affecting the stability of the partition 11.

[0037] As an optional implementation, Figure 8 and Figure 9As shown, the limiting rods 134 are arranged on the inner side of the water permeable film 132. When the limiting rods 134 are arranged on the inner side of the water permeable film 132, the water permeable film 132 is arranged on the outer side of the limiting rods 134, and the movement of the water permeable film 132 can be affected by the limiting rods 134 as little as possible. The fixing member 13 has a larger expansion and movement space, so that the fixing member 13 can have a more suitable first state and second state, and the effect of switching the fixing member 13 between the first state and the second state can be reduced.

[0038] As an optional embodiment, the fixing member 13 includes at most six limiting rods 134, and the limiting rods 134 are made of polytetrafluoroethylene. The limiting rods 134 in the fixing member 13 will inevitably affect the expansion of the fixing member 13. When the number of limiting rods 134 is too large, the expansion of the fixing member 13 will be affected, and the expansion of the fixing member 13 will be limited, which may not be able to achieve the purpose of tightly pressing and fixing the graphite plate after the fixing member 13 is expanded by water absorption. When the number of limiting rods 134 is not greater than six, the effect of the limiting rods 134 on the fixing member 13 is small, and the fixing member 13 can have a larger expansion range. The limiting rods 134 made of polytetrafluoroethylene can avoid pollution of the graphite plate, so that the cleaned graphite plate can be directly used in the next production process, and the production efficiency is improved. At the same time, the limiting rods 134 made of polytetrafluoroethylene can also better protect the graphite plate, so that the graphite plate is not scratched or damaged by collision.

[0039] As an optional embodiment, the end plate 131 is made of polytetrafluoroethylene, and the water permeable film 132 is a polytetrafluoroethylene elastic porous film. The end plate 131 and the water permeable film 132 made of polytetrafluoroethylene can avoid pollution of the graphite plate, so that the cleaned graphite plate can be directly used in the next production process, and the production efficiency is improved. At the same time, the end plate 131 and the water permeable film 132 made of polytetrafluoroethylene can also better protect the graphite plate, so that the graphite plate is not scratched or damaged by collision.

[0040] As an optional embodiment, at least part of the filler 133 is water-absorbing resin. The water-absorbing resin can absorb water and expand in volume, so that the fixing member 13 expands, and the purpose of tightly pressing and fixing the graphite plate by the fixing member 13 in a water-rich environment during cleaning is achieved. At the same time, the water-absorbing resin can dehydrate and return to the original size when drying, so that the fixing member 13 can shrink and return to the original volume, and the purpose of providing the graphite plate with a movement space by the fixing member 13 in a dry and dehydrated environment is achieved.

[0041] As an optional implementation, the filler 133 further comprises a water-stable filler. In the present application, the water-stable filler refers to a material that does not change in volume after being contacted with water. Specifically, the water-stable filler can be a water-unsorbable filler such as silicon dioxide, etc. The water-stable filler can also be a water-absorbable filler that does not increase in volume after being contacted with water, such as zeolite, etc. By arranging a portion of the water-stable filler in the filler 133, the expansion degree and size of the fixed part after being contacted with water can be controlled by adjusting the water-stable filler and the water-absorbable and expandable filler, so that the fixed part can tightly press against the graphite plate after being contacted with water and expanded, and the fixed part can provide sufficient space for the graphite plate to be disassembled after being dehydrated and shrunk.

[0042] As an optional implementation, the partition plate 11 is a U-shaped partition plate 11 (as shown in FIG. 1C). Figure 2 When the partition plate 11 is a U-shaped partition plate 11, the partition plate 11 has a large hollow part in the middle, which can reduce the weight of the partition plate 11 and play a role in lightening the weight, and on the other hand, the hollow part can provide convenience for cleaning the graphite plate and reduce the corners on the graphite plate that cannot be cleaned by water and detergent.

[0043] As an optional implementation, the surface of the partition plate 11 is provided with a polytetrafluoroethylene coating, and the surface of the connecting piece 12 is provided with a polytetrafluoroethylene coating. By providing the surfaces of the partition plate 11 and the connecting piece 12 with a polytetrafluoroethylene coating, the graphite plate can be prevented from being contaminated, and the cleaned graphite plate can be directly used in the next production process, thereby improving the production efficiency. At the same time, the partition plate 11 and the connecting piece 12 provided with the polytetrafluoroethylene coating can also better protect the graphite plate, thereby preventing the graphite plate from being damaged, such as being scratched or bumped.

[0044] As an optional implementation, the partition plate 11 is made of polytetrafluoroethylene, and the connecting piece 12 is made of polytetrafluoroethylene. By selecting polytetrafluoroethylene for the partition plate 11 and the connecting piece 12, the graphite plate can be prevented from being contaminated, and the cleaned graphite plate can be directly used in the next production process, thereby improving the production efficiency. At the same time, the partition plate 11 and the connecting piece 12 made of polytetrafluoroethylene can also better protect the graphite plate, thereby preventing the graphite plate from being damaged, such as being scratched or bumped.

[0045] The fixing device 100 in the present application is assembled by the partition plate 11 and the fixing piece 13, which can achieve good fixation of the graphite plate during the cleaning process, and can also achieve fixation of multiple graphite plates according to actual needs, so that multiple graphite plates can be cleaned at the same time, thereby improving the cleaning efficiency of the graphite plate. By arranging the fixing piece 13 in the fixing device 100, the graphite plate can be fixed and disassembled by using water absorption during the cleaning process and dehydration during the drying process.

[0046] Finally, it should be noted that the above is only some of the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A fixing device (100) for cleaning a graphite plate, used for fixing a graphite plate during a cleaning process, characterized in that: include: A partition (11), wherein the partition (11) comprises at least two pieces, all the partitions (11) are arranged in parallel, each of the partitions (11) is provided with at least four connection holes (111), and a fixing space (101) for fixing the graphite plate is formed between adjacent partitions (11); a connecting member (12), the connecting member (12) being arranged through the connecting hole (111) on the partition (11), the connecting member (12) connecting the partitions (11) together; the connecting member (12) comprising a connecting portion (121) located between adjacent partitions (11); and A fixing member (13) is sleeved on the outside of the connecting portion (121), one end of the fixing member (13) is abutted against one of the partitions (11), and the other end of the fixing member (13) is abutted against another of the partitions (11), and the fixing member (13) includes a first state of expansion when absorbing water and a second state of contraction when dehydrating.

2. The fixing device (100) according to claim 1, characterized in that: The fixing member (13) includes end plates (131) provided on both sides, a water-permeable membrane (132) and a filler (133); the water-permeable membrane (132) is connected between the end plates (131) on both sides; the end plates (131) and the water-permeable membrane (132) on both sides enclose a filling cavity (102); the filler (133) is filled in the filling cavity (102); and the filler (133) includes a water-absorbing and expanding filler.

3. The fixing device (100) according to claim 2, characterized in that: The fixing member (13) further comprises a limiting rod (134) for limiting the distance between the end plates (131) on both sides. The limiting rod (134) is arranged between the end plates (131) on both sides. The limiting rod (134) is arranged on the inner side or the outer side of the water permeable membrane (132).

4. The fixing device (100) according to claim 3, characterized in that: The limiting rod (134) is arranged on the inner side of the water-permeable membrane (132).

5. The fixing device (100) according to claim 3, characterized in that: The fixing member (13) includes at most six limiting rods (134), and the limiting rods (134) are made of polytetrafluoroethylene.

6. The fixing device (100) according to claim 2, characterized in that: The end plate (131) is made of polytetrafluoroethylene, the water-permeable membrane (132) is a polytetrafluoroethylene elastic porous membrane, and at least a portion of the filler (133) is a water-absorbing resin.

7. The fixing device (100) according to claim 6, characterized in that: The filler (133) also includes a water-stable filler.

8. The fixing device (100) according to claim 1, characterized in that: The partition (11) is a U-shaped partition (11).

9. The fixing device (100) according to claim 1, characterized in that: The surface of the partition (11) is provided with a polytetrafluoroethylene coating, and the surface of the connecting piece (12) is provided with a polytetrafluoroethylene coating.

10. The fixing device (100) according to claim 1, characterized in that: The partition (11) is made of polytetrafluoroethylene, and the connecting piece (12) is made of polytetrafluoroethylene.

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