Sintering jig for silicon carbide plate type membrane
By designing the grooves and interlocking structure of the sintering fixture, the deformation and uneven heat problems of large-sized silicon carbide plate membranes during high-temperature sintering were solved, stable clamping and uniform heat conduction were achieved, and the sintering quality and production efficiency were improved.
Patent Information
- Application Number
- CN202422650281.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-14
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing sintering jigs are difficult to effectively fix large-sized silicon carbide plate membranes, causing them to be easily deformed during high-temperature sintering and uneven heat conduction, affecting the sintering quality.
A sintering fixture including a sintering box, a sintering partition and a sintering cover is designed. By setting grooves and interlocking grooves on the inner wall of the sintering box and using graphite plate materials, multiple sintering channels are formed to achieve stable clamping of the silicon carbide plate membrane and uniform heat conduction.
It improves the clamping stability of silicon carbide plate membrane, reduces deformation, ensures sintering quality and heat uniformity, reduces energy consumption, and improves production efficiency and product consistency.
Smart Images
Figure CN223435461U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silicon carbide plate-type membrane preparation equipment, in particular to a sintering jig for silicon carbide plate-type membranes. Background Art
[0002] Silicon carbide plate membranes, also known as silicon carbide flat ceramic membranes, are a new type of ceramic membrane. Compared to traditional polymer separation membrane materials, silicon carbide plate membranes offer excellent chemical stability, resistance to acids, alkalis, and organic solvents, high mechanical strength, high temperature resistance, support for backwashing, resistance to microbial attack, and a uniform pore size distribution and high separation efficiency. They are widely used in a variety of fields, including the food industry, bioengineering, environmental engineering, chemical engineering, and metallurgy.
[0003] Currently, industry demand for SiC plate membranes favors larger structures. For example, large plate membranes exceed 1000mm in length and 140mm in width. SiC plate membranes are typically manufactured using a high-temperature sintering process, with the membrane secured in place using a sintering jig to ensure that the membrane's shape and dimensional accuracy are maintained during the high-temperature sintering process.
[0004] However, due to their weight and bulk, SiC membranes of these dimensions are prone to deformation during high-temperature sintering. Sintering jigs are difficult to secure effectively, making it difficult to control deformation during the manufacturing process. Furthermore, due to the increased size of SiC membranes, existing sintering jigs struggle to evenly transfer heat to the membrane during high-temperature sintering, further exacerbating deformation and severely impacting sintering quality. Summary of the Invention
[0005] The purpose of the utility model is to provide a sintering jig for the high-temperature sintering of silicon carbide plate membranes, so as to improve the clamping stability of the silicon carbide plate membranes, reduce the deformation of the silicon carbide plate membranes during the preparation process, and improve the sintering quality.
[0006] In order to achieve the above-mentioned object, the present invention proposes a sintering jig for silicon carbide plate membrane, comprising a sintering box, a sintering partition plate and a sintering cover plate, wherein the length direction of the sintering box is defined as a first direction, and the width direction of the sintering box is defined as a second direction;
[0007] The inner wall of the sintering box is provided with a groove, the groove extending from the top of the sintering box to the bottom of the inner wall, and the plurality of grooves are linearly arranged on the inner wall of the sintering box along the second direction;
[0008] A plurality of sintering partitions are arranged in parallel in the sintering box, the length direction of the sintering partitions is arranged along the first direction, the end of the sintering partitions is embedded in the groove, and a sintering channel for clamping the silicon carbide plate film is arranged between adjacent sintering partitions.
[0009] The sintering cover plate covers the top of the sintering box, and the sintering cover plate is provided with a matching slot on the top of the sintering box.
[0010] The sintering partitions are inserted into the inner wall of the sintering box through the grooves, a plurality of sintering partitions are arranged in parallel in the sintering box, a sintering channel for clamping the silicon carbide plate film is formed between adjacent sintering partitions, the structure of the sintering channel can stably clamp the silicon carbide plate film from both sides, and the silicon carbide plate film is provided with stable support and fixation, so that the film can maintain a good shape during high-temperature sintering, the contact surfaces of the sintering box and the sintering partitions with the silicon carbide plate film are both planar structures, i.e. the silicon carbide plate film is in surface contact with both, so that the control of deformation during sintering is more reliable, which is beneficial to the uniformity of heat conduction and effectively reduces the deformation of the silicon carbide plate film during preparation.
[0011] Preferably, the first inner wall of the sintering box is provided with a first groove, the second inner wall of the sintering box is provided with a second groove, the first inner wall and the second inner wall are both inner walls of the sintering box in the second direction, and the first groove and the second groove correspond one by one.
[0012] Preferably, a plurality of sintering channels are linearly and equally spaced arranged in the interior of the sintering box along the second direction.
[0013] Preferably, the side wall of the sintering box has the same thickness as the bottom of the sintering box.
[0014] Preferably, the thickness of the sintering cover plate is the same as the thickness of the side wall of the sintering box.
[0015] Preferably, the groove is a rectangular slot or a dovetail slot.
[0016] Preferably, the sintering box, the sintering partition and the sintering cover plate are all made of graphite plates.
[0017] Compared with the prior art, the sintering jig for silicon carbide plate membranes provided by the utility model has the following substantial features and improvements: the sintering jig for silicon carbide plate membranes forms a solid support structure by embedding the ends of the sintering partitions into the grooves on the inner wall of the sintering box. The parallel arrangement and precise arrangement of the sintering partitions form multiple sintering channels. The structure of the sintering channels can stably clamp the silicon carbide plate membrane from both sides, providing stable support and fixation for the silicon carbide plate membrane. The silicon carbide plate membrane and the sintering partitions of the sintering box are in surface contact, so that the silicon carbide plate membrane is heated evenly during the sintering process, making the control of deformation during sintering more reliable and improving the sintering quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a sintering fixture for silicon carbide plate membrane in an embodiment of the present utility model.
[0019] Figure 2 This is a schematic diagram of the assembly structure of a sintering jig for silicon carbide plate membranes in an embodiment of the present utility model.
[0020] Figure 3 yes Figure 1 main view.
[0021] Figure 4 yes Figure 3 Isometric section view at AA.
[0022] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure at BB in the middle.
[0023] Figure numerals: 1, sintering box; 2, sintering partition; 3, sintering cover plate; 4, first groove; 5, second groove; 6, sintering channel; 7, fitting groove. DETAILED DESCRIPTION
[0024] The specific implementation of the present utility model is described in detail below with reference to the accompanying drawings.
[0025] like Figures 1-5 As shown, in the embodiment of the utility model, a sintering jig for silicon carbide plate membrane is proposed, which aims to improve the clamping stability of the silicon carbide plate membrane, especially for the silicon carbide plate membrane with a length exceeding 1000mm and a width exceeding 140mm, reduce the deformation of the silicon carbide plate membrane during the preparation process, and improve the sintering quality.
[0026] The sintering jig for silicon carbide plate membranes proposed in the embodiments of the present invention ensures the secure embedding of the sintering baffles by providing grooves on the inner wall of the sintering box, thereby improving the clamping stability of the silicon carbide plate membrane. Secondly, the parallel arrangement and precise embedding design of multiple sintering baffles effectively reduce the deformation of the silicon carbide plate membrane during the preparation process, ensuring the uniformity of the sintering process. Finally, the interlocking structure design of the sintering cover plate and the top of the sintering box further enhances the overall sealing and stability, significantly improving the sintering quality.
[0027] like Figure 1 Combine Figure 2 As shown, a sintering fixture for silicon carbide plate membrane includes a sintering box 1, a sintering partition 2 and a sintering cover 3. The length direction of the sintering box 1 is defined as the first direction, and the width direction of the sintering box 1 is defined as the second direction. For reference, as Figure 1 As shown, Figure 1 The direction indicated by the dotted arrow on the right side is the first direction. Figure 1 The direction indicated by the dotted arrow on the left side is the second direction.
[0028] like Figure 2 As shown, a groove is provided on the inner wall of the sintering box 1. The groove extends from the top of the sintering box 1 to the bottom of the inner wall. A plurality of grooves are linearly arranged on the inner wall of the sintering box 1 along the second direction.
[0029] like Figure 2 Combine Figure 4 As shown, multiple sintering baffles 2 are arranged parallel to each other in a sintering box 1. The length of the sintering baffles 2 is arranged along a first direction. The ends of the sintering baffles 2 are embedded in the grooves. Sintering channels 6 for clamping the silicon carbide plate membrane are provided between adjacent sintering baffles 2.
[0030] like Figure 3 Combine Figure 4 As shown, the sintering cover plate 3 covers the top of the sintering box 1. The sintering cover plate 3 is provided with an engaging groove 7 that matches the top of the sintering box 1.
[0031] Among them, the sintering partition 2 is plugged into the inner wall of the sintering box 1 through a groove, and multiple sintering partitions 2 are arranged parallel to each other in the sintering box 1. A sintering channel 6 for clamping the silicon carbide plate membrane is formed between adjacent sintering partitions 2. The structure of the sintering channel 6 can stably clamp the silicon carbide plate membrane from both sides, providing stable support and fixation for the silicon carbide plate membrane, so that the membrane can maintain a good shape during high-temperature sintering. The contact surfaces between the sintering box 1 and the sintering partition 2 and the silicon carbide plate membrane are all planar structures, that is, the silicon carbide plate membrane is in surface contact with both, which makes the control of deformation during sintering more reliable, is conducive to the uniformity of heat conduction, and effectively reduces the deformation of the silicon carbide plate membrane during the preparation process.
[0032] For example, the sintering box 1, sintering baffles 2, and sintering cover plate 3 are all made of graphite sheets. Leveraging the excellent high-temperature resistance of graphite sheets, they can withstand extremely high temperatures during the sintering process without deformation or melting, ensuring the stability and longevity of the sintering equipment. Furthermore, graphite has excellent thermal conductivity, allowing it to conduct heat quickly and evenly, resulting in a more uniform temperature distribution within the sintering box 1 and improving the quality and consistency of the sintered product.
[0033] like Figure 5 As shown, a first groove 4 is provided on the first inner wall of the sintering box 1. A second groove 5 is provided on the second inner wall of the sintering box 1. The first inner wall and the second inner wall are both inner walls of the sintering box 1 located in the second direction, and the first groove 4 corresponds to the second groove 5 one-to-one. With this arrangement, the first groove 4 corresponds to the second groove 5 one-to-one, ensuring that the sintering partition 2 can be accurately aligned and fixed, reducing the possibility of positional offset and improving the clamping accuracy. At the same time, the design of the double-sided grooves provides double fixation, enhances the stability of the sintering partition 2 in a high temperature environment, and further reduces the risk of deformation. In addition, the corresponding design of the first groove 4 and the second groove 5 also maintains the coordination and symmetry of the internal structure of the sintering box 1, which is conducive to further optimizing heat conduction during the sintering process.
[0034] For example, the first groove 4 and the second groove 5 can both be selected as rectangular grooves or dovetail grooves. Both rectangular grooves and dovetail grooves can provide a stable clamping effect. Among them, the rectangular groove is simple and easy to process and can be firmly embedded. Due to its unique shape, the dovetail groove provides stronger pull-out resistance, making the sintered partition 2 more secure and not easy to fall off. The geometric structure of the dovetail groove can make the force more uniform, reduce stress concentration, prevent the sintered partition 2 from deformation and cracking at high temperatures, show higher durability under high temperature and repeated use, and reduce the maintenance frequency and cost of the equipment.
[0035] like Figure 2 Combine Figure 5 As shown, multiple sintering channels 6 are arranged linearly and evenly in the second direction inside the sintering box 1. In this way, the linear arrangement of multiple sintering channels 6 maximizes the utilization efficiency of each sintering channel 6, increases the output of a single operation, and thus improves production efficiency. In addition, the linear and evenly spaced sintering channels 6 ensure that heat is evenly distributed in the sintering box 1, reducing temperature differences, which is conducive to further improving the sintering quality of the product. For example, Figure 5 As shown, 19 sintering partitions 2 are linearly arranged at equal intervals in the sintering box 1 to form 18 sintering channels 6 .
[0036] In order to further improve the sintering quality, the structure of the sintering box 1 is further optimized in the embodiments of the present application. For example, the side wall of the sintering box 1 has the same thickness as the bottom of the sintering box 1. In this way, during the sintering process, the heat is more evenly distributed in the box body, reducing thermal stress and temperature gradient. The same thickness makes the sintering box 1 more uniform in stress during thermal expansion and cooling, reducing uneven deformation caused by thickness difference, improving the stability and durability of the overall structure.
[0037] According to some preferred embodiments of the present application, the thickness of the sintering cover plate 3 is also optimized. For example, the thickness of the sintering cover plate 3 is the same as the thickness of the side wall of the sintering box 1. In this way, similar to the purpose of further optimizing the structure of the sintering box 1, it aims to reduce thermal stress and temperature gradient in the box body.
[0038] The sintering jig for silicon carbide plate film proposed in the embodiments of the present application uses the end of the sintering partition plate 2 embedded in the groove in the inner wall of the sintering box 1 to form a solid support structure, and the parallel arrangement and accurate arrangement of the sintering partition plate 2 form a plurality of sintering channels 6. The structure of the sintering channel 6 can stably clamp the silicon carbide plate film from both sides, providing stable support and fixation for the silicon carbide plate film. The silicon carbide plate film and the sintering box 1 and the sintering partition plate 2 are all in surface contact, so that the silicon carbide plate film is evenly heated during sintering, making the control of deformation more reliable during sintering, and improving the sintering quality.
[0039] The sintering jig for silicon carbide plate film proposed in the embodiments of the present application can effectively prevent the silicon carbide plate film from deforming at high temperature, and its excellent heat conduction performance can also reduce the energy consumption during high-temperature sintering, which can greatly reduce the production cost while improving the sintering success rate.
[0040] The present application is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present application can also have other implementation manners. For those skilled in the art, any modification, equivalent replacement, improvement, etc. formed within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A sintering jig for silicon carbide plate membrane, characterized in that: It comprises a sintering box (1), a sintering partition plate (2) and a sintering cover plate (3), wherein the length direction of the sintering box (1) is defined as a first direction, and the width direction of the sintering box (1) is defined as a second direction; The inner wall of the sintering box (1) is provided with a groove, the groove extending from the top of the sintering box (1) to the bottom of the inner wall, and a plurality of grooves are linearly arranged on the inner wall of the sintering box (1) along the second direction; A plurality of sintering partitions (2) are arranged in parallel with each other in a sintering box (1), the length direction of the sintering partitions (2) being arranged along a first direction, the ends of the sintering partitions (2) being embedded in the grooves, and sintering channels (6) for clamping the silicon carbide plate membrane being provided between adjacent sintering partitions (2); The sintering cover plate (3) covers the top of the sintering box (1), and the sintering cover plate (3) is provided with an engaging groove (7) that matches the top of the sintering box (1).
2. The sintering jig for silicon carbide plate membrane according to claim 1, characterized in that: A first groove (4) is provided on the first inner wall of the sintering box (1), and a second groove (5) is provided on the second inner wall of the sintering box (1). The first inner wall and the second inner wall are both inner walls of the sintering box (1) located in the second direction, and the first groove (4) corresponds to the second groove (5) one by one.
3. The sintering jig for silicon carbide plate membrane according to claim 1, characterized in that: The plurality of sintering channels (6) are linearly arranged at equal intervals inside the sintering box (1) along the second direction.
4. The sintering jig for silicon carbide plate membrane according to claim 1, characterized in that: The side walls of the sintering box (1) and the bottom of the sintering box (1) have the same thickness.
5. The sintering jig for silicon carbide plate membrane according to claim 4, characterized in that: The thickness of the sintering cover plate (3) is the same as the thickness of the side wall of the sintering box (1).
6. The sintering jig for silicon carbide plate membrane according to claim 1, characterized in that: The groove is a rectangular groove or a dovetail groove.
7. The sintering jig for silicon carbide plate membrane according to claim 1, characterized in that: The sintering box (1), sintering partition plate (2) and sintering cover plate (3) are all made of graphite plates.