Drying jig for extrusion molding of silicon carbide ceramic flat sheet membrane
By designing the inclined drying channels and adjustment components of the drying fixture, the problem of internal stress concentration during the drying process of the silicon carbide ceramic flat membrane was solved, achieving a more uniform drying effect and higher product quality.
Patent Information
- Application Number
- CN202422807863.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-11-18
AI Technical Summary
During the drying process of silicon carbide ceramic flat membranes, uneven evaporation of water on the surface and inside leads to internal stress concentration, which is prone to cracking and deformation, affecting product quality and mechanical properties.
A drying fixture is designed, including a base and a supporting assembly. The silicon carbide ceramic flat membrane is supported by inclined drying channels and partitions. The angle of the drying channel is adjusted by adjusting the assembly to ensure uniform air circulation and moisture escape, thereby reducing stress concentration.
It effectively reduces the deformation of the silicon carbide ceramic flat membrane, improves the uniformity and efficiency of drying, and ensures the integrity and mechanical properties of the product.
Smart Images
Figure CN223412383U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of preparation of silicon carbide ceramic flat membranes, in particular to a drying jig for extrusion-molding silicon carbide ceramic flat membranes. Background Art
[0002] During the extrusion process, silicon carbide ceramic flat membranes require drying to ensure the final quality of the membranes, as the slurry used contains moisture. This drying process is typically achieved by stacking and air-drying the membranes. Multiple extruded flat membranes are stacked on a support, and a fan is used to blow heated air onto the membrane surfaces to achieve the desired drying effect.
[0003] However, during the actual drying process, moisture on the surface of the silicon carbide flat membrane quickly evaporates, while moisture within the membrane has little time to diffuse to the surface. This causes the surface to shrink much faster than the interior, generating significant internal stress. For example, as the surface shrinks, it exerts tensile stress on the wet interior. Once this tensile stress exceeds the tensile strength of the green membrane, cracking occurs, compromising the integrity and mechanical properties of the product.
[0004] Furthermore, the clay material has a certain degree of plasticity. Stacking multiple flat membranes as described above can cause the pores of the bottom membrane to deform due to excessive stress, leading to significant differences in wind speeds between different pores. Such uneven drying can easily cause internal stress in the membrane due to varying degrees of shrinkage in different areas. In extreme cases, the membrane can even crack due to localized overdrying, or suffer quality issues during subsequent processing or use due to localized moisture. Summary of the Invention
[0005] The purpose of the utility model is to provide a support device for an extruded silicon carbide ceramic flat membrane during the drying process, so as to reduce the stress concentration at the bottom of the silicon carbide ceramic flat membrane, reduce the deformation of the silicon carbide ceramic flat membrane, and improve the drying effect.
[0006] In order to achieve the above purpose, the present invention adopts the following scheme:
[0007] A drying jig for extruding a silicon carbide ceramic flat membrane, comprising a base and a supporting assembly;
[0008] The base is provided with a placement table for installing the supporting component;
[0009] The supporting assembly includes a bracket and a partition. The bracket is provided with a first connecting portion and a second connecting portion. The bracket is connected to the placement table through the first connecting portion. A placement area for accommodating a silicon carbide ceramic flat membrane is provided between the first connecting portion and the second connecting portion. A plurality of partitions are arranged in parallel in the placement area, and one end of the partition is connected to the second connecting portion.
[0010] A drying channel is formed between adjacent partitions. The drying channel is arranged at an angle relative to the placement table. The inner wall of the drying channel supports the silicon carbide ceramic flat membrane.
[0011] The partition is provided with a plurality of openings, and the openings are connected to the drying channel.
[0012] During the drying process, the extruded silicon carbide ceramic flat membrane is prone to stress concentration at the bottom of the flat membrane due to the stacking method, which in turn causes deformation of the membrane. The drying jig is provided with a placement area on the bracket in the supporting assembly, and a partition is provided in the placement area. The partition is used to form auxiliary support for the silicon carbide ceramic flat membrane, that is, the inner wall of the drying channel between adjacent partitions supports the silicon carbide ceramic flat membrane. In this way, the force on the bottom of the silicon carbide ceramic flat membrane is effectively dispersed, stress concentration is relieved, and the deformation of the silicon carbide ceramic flat membrane during the drying process is significantly reduced, which is beneficial to ensuring product quality and dimensional accuracy.
[0013] Preferably, an adjustment component for adjusting the inclination angle of the drying channel is provided between the base and the supporting component, the adjustment component includes a support, a rotating shaft and a locking nut, the support is installed on the placement table, the first connecting part of the bracket is connected to the support through the rotating shaft, the end of the rotating shaft is provided with a thread matching the locking nut, and the locking nut is screwed onto the end of the rotating shaft through the thread.
[0014] Preferably, the bracket is an L-shaped supporting plate, and the partition is arranged perpendicular to the second connecting portion.
[0015] Preferably, the plurality of openings are arranged in a rectangular array on the partition.
[0016] As a preference, the drying channel has an inclination angle of 40° relative to the tabletop. o -50 o .
[0017] Preferably, a scale plate for marking the adjustment angle is provided on the support.
[0018] Preferably, both the first connecting portion and the second connecting portion of the bracket are provided with handles.
[0019] Compared with the prior art, the drying jig for extruded silicon carbide ceramic flat membranes provided by the utility model has the following substantial features and improvements: the drying jig for extruded silicon carbide ceramic flat membranes utilizes the bracket in the supporting assembly to arrange the drying channel formed between adjacent partitions at an angle relative to the placement table of the base, thereby optimizing the stacking method of the existing silicon carbide ceramic flat membranes during the drying process; the inner wall of the drying channel supports the silicon carbide ceramic flat membrane, reduces the stress concentration at the bottom of the silicon carbide ceramic flat membrane, reduces the deformation of the silicon carbide ceramic flat membrane, and is conducive to ensuring the uniformity of the wind speed passing through the flat membrane, thereby improving the drying effect; and, multiple openings provided on the partitions are connected to the drying channel. On the one hand, the openings further optimize the air circulation path, so that the dry air can more fully contact various parts of the silicon carbide ceramic flat membrane, thereby improving the uniformity and effect of drying; on the other hand, the openings also help moisture escape from different positions, thereby avoiding local humidity accumulation affecting the drying quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a drying jig for extruding a silicon carbide ceramic flat membrane in an embodiment of the present utility model.
[0021] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of a drying fixture used for extrusion molding of silicon carbide ceramic flat membranes from another perspective.
[0022] Figure 3 yes Figure 1 main view.
[0023] Figure 4 yes Figure 3 Right view of .
[0024] Figure numerals: 1. base; 2. supporting assembly; 3. adjustment assembly; 4. opening; 5. handle; 11. placement table; 21. bracket; 22. partition; 23. drying channel; 31. support; 32. rotating shaft; 33. locking nut; 34. scale plate; 211. first connecting part; 212. second connecting part. DETAILED DESCRIPTION
[0025] The specific implementation of the present utility model is described in detail below with reference to the accompanying drawings.
[0026] like Figure 1-Figure 4 As shown, in the implementation of the utility model, a drying jig for extruded silicon carbide ceramic flat membrane is proposed, which aims to reduce the stress concentration at the bottom of the extruded silicon carbide ceramic flat membrane during the drying process, reduce the deformation of the silicon carbide ceramic flat membrane, and improve the drying effect.
[0027] A drying jig for extruded silicon carbide ceramic flat membranes proposed in an embodiment of the present invention utilizes a bracket in a supporting assembly to arrange the drying channel formed between adjacent partitions at an angle relative to the placement table of the base, thereby optimizing the stacking method of existing silicon carbide ceramic flat membranes during the drying process. The inner wall of the drying channel supports the silicon carbide ceramic flat membrane, reduces stress concentration at the bottom of the silicon carbide ceramic flat membrane, reduces deformation of the silicon carbide ceramic flat membrane, and is beneficial to ensuring the uniformity of wind speed passing through the flat membrane, thereby improving the drying effect.
[0028] like Figure 1 As shown, a drying fixture for extruding silicon carbide ceramic flat membranes includes a base 1 and a support assembly 2. Base 1 is provided with a placement surface 11 for mounting support assembly 2. Base 1 is positioned at the air outlet of a drying oven, facilitating adjustment of placement surface 11 to a horizontal position.
[0029] like Figure 2 Combine Figure 4 As shown, the support assembly 2 includes a bracket 21 and a partition 22. The bracket 21 is provided with a first connecting portion 211 and a second connecting portion 212. The bracket 21 is connected to the placement table 11 via the first connecting portion 211. A placement area for accommodating a silicon carbide ceramic flat membrane is provided between the first connecting portion 211 and the second connecting portion 212. Multiple partitions 22 are arranged in parallel within the placement area. One end of each partition 22 is connected to the second connecting portion 212.
[0030] like Figure 2 As shown, a drying channel 23 is formed between adjacent partitions 22. The drying channel 23 is arranged at an angle relative to the placement table 11. The inner wall of the drying channel 23 supports the silicon carbide ceramic flat membrane.
[0031] like Figure 2 Combine Figure 3 As shown, the partition 22 is provided with a plurality of openings 4, which are connected to the drying channel 23. The openings 4 further optimize the air flow path, allowing the dry air to more fully contact all parts of the silicon carbide ceramic flat membrane, improving the uniformity and effectiveness of drying. On the other hand, the openings 4 also help moisture escape from different locations, preventing localized moisture accumulation from affecting drying quality.
[0032] For example, the bracket 21 is an L-shaped support plate, with the partitions 22 arranged perpendicular to the second connecting portion 212. This L-shaped support plate design allows for more efficient use of space, providing a suitable placement area for the silicon carbide ceramic flat membrane. This shape also facilitates accurate placement of the flat membrane on the support assembly 2, improving operational convenience. The partitions 22 arranged perpendicular to the second connecting portion 212 create a more regular drying channel 23 formed between adjacent partitions 22, ensuring more accurate positioning of the flat membrane within the placement area, preventing displacement of the membrane during the drying process, and facilitating uniform air drying of the flat membrane within the drying channel 23.
[0033] In order to further reduce the difficulty of adjusting the inclination angle of the drying channel 23, as shown in FIG. Figure 2 As shown, an adjustment component 3 for adjusting the inclination angle of the drying channel 23 is provided between the base 1 and the supporting component 2. Figure 2 Combine Figure 3 As shown, the adjustment assembly 3 includes a support 31, a rotating shaft 32, and a locking nut 33. The support 31 is mounted on the table 11. The first connecting portion 211 of the bracket 21 is connected to the support 31 via the rotating shaft 32. The end of the rotating shaft 32 is provided with threads that match the locking nut 33. The locking nut 33 is screwed onto the end of the rotating shaft 32.
[0034] This allows the drying fixture to be adapted to the drying needs of a variety of extruded silicon carbide ceramic flat membranes of varying types, thicknesses, and material properties. This facilitates optimal adjustment of the tilt angle for membranes of varying sizes, thereby providing better support for the membranes from the inner walls of the drying channel 23. Furthermore, the adjustable tilt angle allows for more precise control of the air flow within the drying channel 23. Operators can fine-tune the tilt angle based on observations of air flow rate and direction during the actual drying process and their assessment of the drying effect.
[0035] For example, if it is found that a certain area dries slowly in the early stage of drying, the angle can be appropriately adjusted to guide more air to flow through this area, thereby optimizing the distribution of air on the surface of the flat membrane, further improving the uniformity and efficiency of drying, and better ensuring the drying quality compared to the fixed-angle drying channel 23.
[0036] When adjusting the inclination angle of the drying channel 23, first loosen the locking nut 33 and adjust the bracket 21 to rotate around the axis of the rotating shaft 32. As the bracket 21 rotates, the angle between the drying channel 23 and the placement table 11 changes until it is adjusted to a suitable inclination angle. Then screw in the locking nut 33 and lock the bracket 21 with the locking force of the thread.
[0037] According to some preferred embodiments of the present invention, the drying channel 23 is inclined at an angle of 40° relative to the placement table 11.o -50 o This arrangement ensures effective air circulation while providing stable support for the silicon carbide ceramic flat membrane. It prevents the membrane from sliding or shifting under its own weight due to excessive tilt, thus reducing the possibility of additional interference with the membrane during the drying process. Furthermore, the appropriate tilt helps to more evenly distribute the forces acting on the membrane during the drying process, further reducing the risk of membrane deformation and thus ensuring the quality of the dried membrane.
[0038] like Figure 4 As shown, a scale plate 34 is mounted on support 31 to indicate the adjustment angle. Scale plate 34 allows the operator to precisely control the inclination angle of drying channel 23. When drying different batches or types of silicon carbide ceramic flat membranes, the angle can be accurately adjusted to a specific value based on past experience or experimental data. Compared to adjustment methods without scale indications, this allows for more precise reproduction of successful drying parameters, avoiding problems such as uneven drying or reduced efficiency caused by angle deviation.
[0039] like Figure 3 As shown, multiple openings 4 are arranged in a rectangular array on the partition 22. This arrangement provides an orderly flow path for air. Air can form a stable and regular airflow within the drying channel 23 along the neatly arranged openings 4, allowing air to flow more smoothly between the partitions 22, fully contacting the flat membrane and removing moisture. A stable airflow path improves drying efficiency, shortens drying time, and helps maintain the stability of the drying process. For example, the openings 4 can be circular, with a diameter of 8 mm to 10 mm.
[0040] like Figure 4 As shown, the first and second connecting portions 211, 212 of the bracket 21 are each provided with a handle 5. When installing the drying fixture, the operator can easily lift and move the bracket 21 using the handles 5 on the first and second connecting portions 211, 212, allowing it to accurately align with the support 31 or other related components. This reduces potential bumps and damage during installation due to awkward handling, improving installation efficiency and accuracy. When the inclination angle of the drying channel 23 needs to be adjusted, the handles 5 provide a force point for the operator, allowing for more stable and convenient rotation of the bracket 21 to achieve the desired angle, which can then be secured using the adjustment assembly 3.
[0041] When using the drying jig for extrusion molding silicon carbide ceramic flat membrane proposed in the present invention, the operator adjusts the angle between the support 31 and the first connecting portion 211 of the bracket 21 through the rotating shaft 32 and the locking nut 33, and sets the inclination angle of the drying channel 23 relative to the placement table 11 at 40o -50 o After the adjustment is completed, tighten the locking nut 33 to fix the position of the bracket 21 to ensure that the angle does not change during the drying process. Subsequently, the extruded silicon carbide ceramic flat membrane is placed in the placement area formed by the bracket 21 and the partition 22. The partition 22 is used to preliminarily position the flat membrane to ensure that the flat membrane is located in the drying channel 23 between adjacent partitions 22 and in good contact with the inner wall of the drying channel 23. This ensures stable support during the drying process, reduces stress concentration at the bottom, and reduces deformation.
[0042] Turn on the drying equipment, allowing dry air to enter drying channel 23. Air flows through openings 4 in partitions 22 into drying channel 23, evenly distributing the air and following a regular path. The inclined drying channel 23 allows air to flow smoothly across the flat membrane surface, carrying away evaporated water vapor.
[0043] The present invention is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present invention may also have other implementation methods. For those skilled in the art, any technical solution formed by any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A drying jig for extrusion molding silicon carbide ceramic flat membrane, characterized in that: It comprises a base (1) and a supporting assembly (2); The base (1) is provided with a placement table (11) for mounting the supporting component (2); The supporting assembly (2) includes a bracket (21) and a partition (22), the bracket (21) is provided with a first connecting portion (211) and a second connecting portion (212), the bracket (21) is connected to the placement table (11) via the first connecting portion (211), a placement area for accommodating a silicon carbide ceramic flat membrane is provided between the first connecting portion (211) and the second connecting portion (212), a plurality of partitions (22) are arranged in parallel in the placement area, and one end of the partition (22) is connected to the second connecting portion (212); A drying channel (23) is formed between adjacent partitions (22), the drying channel (23) being arranged obliquely relative to the placement table (11), and the inner wall of the drying channel (23) supporting the silicon carbide ceramic flat membrane; The partition (22) is provided with a plurality of openings (4), and the openings (4) are connected to the drying channel (23).
2. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 1, characterized in that: An adjustment assembly (3) for adjusting the inclination angle of the drying channel (23) is provided between the base (1) and the supporting assembly (2), the adjustment assembly (3) comprising a support (31), a rotating shaft (32) and a locking nut (33), the support (31) being mounted on a placement table (11), the first connecting portion (211) of the bracket (21) being connected to the support (31) via the rotating shaft (32), the end of the rotating shaft (32) being provided with a thread matching the locking nut (33), and the locking nut (33) being screwed onto the end of the rotating shaft (32) via the thread.
3. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 1, characterized in that: The bracket (21) is an L-shaped supporting plate, and the partition (22) is arranged perpendicular to the second connecting portion (212).
4. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 1, characterized in that: A plurality of openings (4) are arranged in a rectangular array on the partition (22).
5. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 1, characterized in that: The drying channel (23) has an inclination angle of 40° relative to the placement table (11). o -50 o .
6. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 2, characterized in that: The support (31) is provided with a scale plate (34) for marking the adjustment angle.
7. The drying jig for extrusion molding of silicon carbide ceramic flat membrane according to claim 2, characterized in that: A handle (5) is provided on both the first connecting portion (211) and the second connecting portion (212) of the bracket (21).