An airflow guiding structure inside a ceramic tile drying kiln
By employing a multi-stage synergistic flow guiding structure within the drying kiln, the problem of uneven airflow distribution was solved, thereby improving the uniformity and quality of tile drying.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI GUANYI CERAMICS CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-03
AI Technical Summary
The airflow distribution inside the existing drying kiln is uneven, especially in the central area where eddies are easily formed, resulting in uneven drying of the tiles and making them prone to warping or cracking.
It adopts a structure design that integrates a central guide unit, a transition guide unit, and a lateral enhancement guide unit on a main flow base, combined with straight arc, S-shaped, and outward-inclined arc surface guide vanes, to optimize airflow distribution through multi-stage coordinated flow guidance.
It improves the uniformity of airflow distribution within the kiln, enhances the consistency of tile drying and product quality, and reduces warping and cracking defects.
Smart Images
Figure CN224455348U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ceramic tile production technology, specifically to an airflow guiding structure inside a ceramic tile drying kiln. Background Technology
[0002] In the ceramic tile production process, the drying process is a crucial step in ensuring the strength of the tile body and the quality of subsequent sintering. The drying kiln uses a hot air circulation system to evenly heat the wet tile body, promoting rapid and uniform evaporation of moisture. Proper airflow organization not only affects drying efficiency but also directly impacts the flatness and yield of the tiles.
[0003] Currently, most drying kilns use a combination of perforated top or sidewall air supply and return channels to form a circulating airflow. The airflow guidance relies heavily on fixed-angle guide plates or louver structures. These structures are usually evenly arranged along the width of the kiln, which makes it difficult to adapt to the natural attenuation and uneven distribution of airflow velocity in different areas of the kiln. Especially in the middle section of the kiln, the airflow from both sides tends to form vortices or stagnant zones after converging at the center, resulting in a higher drying rate for the central ceramic tile than on the sides, or insufficient local airflow impact. This causes uneven drying of the entire ceramic tile, resulting in warping or cracking defects. Existing guide structures lack the ability to specifically control the converging behavior of airflow and cannot effectively guide the airflow in the central area to diffuse smoothly to both sides, thus limiting further improvement in drying uniformity. Utility Model Content
[0004] The purpose of this utility model is to provide an airflow guiding structure inside a ceramic tile drying kiln to solve the problems mentioned in the background art, such as uneven airflow distribution inside the current drying kiln, especially the formation of vortices in the central area and insufficient airflow coverage on both sides, which leads to uneven drying of ceramic tiles and easy warping or cracking.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an airflow guiding structure inside a ceramic tile drying kiln, comprising a main flow base, on which a central flow guiding unit, a transition flow guiding unit, and a lateral reinforcement flow guiding unit are sequentially installed along the width direction of the kiln. The central flow guiding unit is composed of multiple straight arc-shaped flow guiding plates arranged side by side on a central support beam. The transition flow guiding unit is composed of multiple sets of S-shaped flow guiding plates installed on a transition support seat. The lateral reinforcement flow guiding unit includes outwardly inclined arc-shaped flow guiding plates and a wing assembly movably connected to its side edge.
[0006] Preferably, the radius of curvature of the straight arc-shaped guide vane is 200-250mm, the surface is a concave smooth arc surface, and it is welded to the central support beam at intervals. The central support beam is fixed in the positioning groove of the main flow base by bolts.
[0007] Preferably, the S-shaped guide vane has a front section with positive curvature and a rear section with lateral deflection curvature. Its bottom is embedded in the slot of the transition support seat and fixed by fastening screws, and the transition support seat is welded to the main flow base.
[0008] Preferably, the guide surface of the outward-inclined arc-shaped guide vane is inclined outward at 15° relative to the center line of the kiln body, and its side edge is provided with a connecting ear plate with an elongated hole.
[0009] Preferably, the wing assembly includes a base and three small winglets distributed at 120°, each small winglet being connected to the base by a torsion spring hinge, and the free end being fitted with a high-temperature resistant silicone sealing edge.
[0010] Preferably, the main flow base is a rectangular steel frame structure, and its two sides are provided with flange connection edges with bolt holes.
[0011] Compared with existing technologies, the beneficial effects of this invention are: the airflow guiding structure inside the ceramic tile drying kiln can effectively guide the central airflow to diffuse to both sides, improving the uniformity of airflow distribution inside the kiln and enhancing the consistency and quality of ceramic tile drying. This structure, through a gradient layout integrating a central guiding unit, a transition guiding unit, and a lateral reinforcing guiding unit on the main flow base, combined with the curved surface guiding design of straight arc-shaped guide vanes, S-shaped guide vanes, and outwardly inclined arc-shaped guide vanes, achieves a smooth transition of airflow from the center to the sides. The movable structure of the wing assembly further optimizes the coverage and stability of the edge airflow. The overall structure works synergistically, significantly weakening the central vortex and enhancing the heat exchange effect at the kiln's edges. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of an airflow guiding structure inside a ceramic tile drying kiln according to the present invention.
[0013] Figure 2 This is a schematic diagram of the internal structure of the main flow base of the airflow guiding structure in a ceramic tile drying kiln according to the present invention.
[0014] Figure 3 This is a schematic diagram of the internal structure of the main flow base at the rear end of the airflow guiding structure in a ceramic tile drying kiln according to the present invention.
[0015] In the figure: 1. Main flow base; 2. Central flow guide unit; 21. Straight arc-shaped flow guide vane; 22. Central support beam; 3. Transition flow guide unit; 31. S-shaped flow guide vane; 32. Transition support seat; 4. Lateral reinforcement flow guide unit; 41. Outwardly inclined arc-shaped flow guide vane; 42. Blade assembly; 43. Connecting lug. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: an airflow guiding structure inside a ceramic tile drying kiln, including a main flow base 1. A central flow guiding unit 2, a transition flow guiding unit 3, and a lateral reinforcement flow guiding unit 4 are sequentially installed on the main flow base 1 along the kiln width direction. The central flow guiding unit 2 consists of multiple straight arc-shaped guide vanes 21 arranged side-by-side on a central support beam 22. The transition flow guiding unit 3 consists of multiple sets of S-shaped guide vanes 31 installed on a transition support 32. The lateral reinforcement flow guiding unit 4 includes outwardly inclined arc-shaped guide vanes 41 and wing assembly 42 movably connected to their side edges. The inner ends of the outwardly inclined arc-shaped guide vanes 41 are connected to the transition support 32 via connectors. The main flow base 1 is connected to the kiln air supply channel outlet via a flange structure. In this structure, the hot airflow first... After entering the air supply area of the drying kiln via the main flow base 1, the central flow guiding unit 2, located in the central area, is fixedly connected to the central support beam 22 through multiple straight arc-shaped guide vanes 21. This initial rectification of the main airflow forms a stable, forward-moving central airflow. Subsequently, the airflow enters the transition area. Under the support of the transition support 32, the S-shaped guide vanes 31 in the transition flow guiding unit 3 utilize their continuous transition structure of forward curvature at the front and lateral deflection curvature at the rear to gradually guide the central airflow towards both sides of the kiln body, achieving a smooth change in airflow direction. When the airflow reaches the edge area of the kiln body, the outward-inclined arc-shaped guide vanes 41 in the lateral enhancement flow guiding unit 4 further guide the airflow to the lower side. Simultaneously, the wing assembly 42 connected to its side edge can rotate through the shaft under the impact of the airflow. The micro-oscillation, combined with its internal torsion spring hinge, enables adaptive adjustment, allowing the small vane's deployment angle to dynamically change with airflow intensity. The edge sealing structure effectively reduces turbulence, thereby enhancing the coverage depth and uniformity of the edge airflow. This multi-stage collaborative flow guiding structure, through the orderly spatial distribution of each unit and the coordinated operation between key components, significantly improves the lateral airflow distribution within the kiln. It effectively solves the problems in existing technologies where uneven tile drying and warping / cracking are caused by vortices formed by central airflow convergence and insufficient edge airflow coverage. The straight arc-shaped flow guide 21 has a radius of curvature of 200-250mm, a smooth concave arc surface, and is welded at intervals to the central support beam 22, which is bolted into the positioning groove of the main flow base 1. This structure, through the combination of the concave smooth arc surface of the straight arc-shaped guide vane 21 and a specific radius of curvature, forms a low-resistance, highly directional guiding channel for the airflow in the central area, effectively reducing airflow separation and turbulence generation, ensuring the stable forward delivery of the mainstream airflow. The equidistant arrangement of multiple guide vanes on the central support beam 22 further enhances the uniform distribution characteristics of the airflow. The fixing method of the central support beam 22 enables the stable installation and quick disassembly and maintenance of the guide unit, ensuring the overall rigidity and positional accuracy of the central guide structure under the continuous impact of high-temperature airflow. The S-shaped guide vane 31 has a positive curvature at the front and a lateral deflection curvature at the rear. Its bottom is embedded in the slot of the transition support seat 32 and fixed by fastening screws. The transition support seat 32 is welded to the main flow base 1.This S-shaped guide vane 31 allows for a smooth flow direction change as the airflow passes through, effectively guiding the airflow in the central zone to gradually deflect towards both sides of the kiln body. This avoids energy loss and vortex generation caused by sudden changes in direction. Its bottom fixing method ensures the stability and vibration resistance of the guide vane in complex airflow environments. The transition support 32 is welded to the main flow base 1, further enhancing the rigid connection of the overall structure and ensuring that the positional accuracy of the S-shaped guide vane 31 does not shift during long-term high-temperature operation. This allows it to continuously and stably perform its function of airflow deflection and distribution optimization. The outward-inclined arc-shaped guide vane... The guide surface of 41 is inclined outward at 15° relative to the centerline of the kiln body. Its side edge is provided with a connecting lug 43 with an elongated hole. The elongated hole on the connecting lug 43 is hinged to the vane assembly 42 through the rotating shaft. This structure of the outwardly inclined arc-shaped guide vane 41 can effectively guide the airflow in the transition area to the lower side of the kiln body, enhance the airflow penetration and coverage in the edge area, and improve the heat exchange conditions in the near-wall area. The connecting lug 43 with an elongated hole on its side edge cooperates with the rotating shaft to provide an adjustable hinge fulcrum for the vane assembly 42, which not only allows the vane assembly 42 to swing moderately under the action of airflow. To adapt to different wind pressure conditions, a long oval hole is used for fine-tuning during installation, ensuring precise and controllable spatial relationship between the vane assembly 42 and the guide vanes. This guarantees the stability and dynamic response of the edge airflow guidance. The vane assembly 42 includes a base and three small vanes distributed at 120°. Each small vane is connected to the base by a torsion spring hinge, and the free end is equipped with a high-temperature resistant silicone sealing edge. Under airflow impact, the small vanes of this structure can adaptively open and close under the influence of the torsion spring hinge, effectively disturbing the boundary layer in the near-wall region and enhancing the local turbulent heat transfer intensity. The system guides the mainstream airflow to diffuse deeper into the sides of the kiln, avoiding the formation of drying dead zones. The high-temperature resistant silicone sealing edge at the free end of the small vanes can slightly deform under airflow pressure to fit adjacent structures, reducing gap leakage and vortex generation, thus improving the overall sealing performance and airflow control precision of the guiding system. The main flow base 1 is a rectangular steel frame structure with flange connections on both sides featuring bolt holes. This structure provides the high-strength support and thermal deformation stability required for the overall structure. The flange connections enable rapid alignment and secure connection between the main flow base 1 and the outlet of the drying kiln's air supply channel.
[0018] Working Principle: When using the airflow guiding structure inside the ceramic tile drying kiln, firstly, align the main flow base 1 with the air outlet of the drying kiln through the flange connection edges on both sides and fasten it with bolts. Then, the central flow guiding unit 2 is embedded into the slot on the inner side of the main flow base 1 through the central support beam 22 and locked with bolts, so that multiple straight arc-shaped flow guide vanes 21 are stably arranged in the central area along the width of the kiln. The bottom of the S-shaped flow guide vane 31 of the transition flow guiding unit 3 is inserted into the slot of the transition support seat 32 and then locked with fastening screws. The transition support seat 32 is pre-welded to the corresponding position of the main flow base 1 to achieve reliable installation of the S-shaped flow guide vane 31. The outward-inclined arc-shaped flow guide vane 41 in the lateral reinforcement flow guiding unit 4 is inserted into the stepped slot at the end of the main flow base 1 through its back structure and fixed. The connecting ear plate 43 on its side edge is aligned with the base of the vane assembly 42, and the rotating shaft passes through it in sequence. The elongated hole of the connecting ear plate 43 and the hinge hole of the base are installed in place and fixed with a retaining spring to ensure that the vane assembly 42 can swing around the axis. When the hot airflow enters the main flow base 1 from the air supply channel, the airflow first passes through the straight arc guide vane 21 in the central area and flows steadily forward along its concave arc surface. After entering the transition area, the airflow is guided forward by the positive curvature of the front section of the S-shaped guide vane 31 and gradually shifts to both sides of the kiln body under the action of the lateral deflection curvature of its rear section. Then the airflow reaches the area of the outwardly inclined arc guide vane 41 and is guided to the side and downward along its outwardly inclined guide surface. At the same time, part of the airflow acts on the small vane of the vane assembly 42, pushing it to swing around the rotation axis. Under the action of the elastic restoring force of the torsion spring hinge, the small vane dynamically adjusts the opening and closing angle with the airflow intensity. The airflow continues to diffuse on its surface and in the gaps, and finally forms a uniform airflow field covering the entire width of the kiln body, thus completing a series of operations.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A flow guiding structure in a tile drying kiln, comprising a main flow guiding base (1), characterized in that: The main flow base (1) is equipped with a central flow guiding unit (2), a transition flow guiding unit (3) and a lateral enhancement flow guiding unit (4) in sequence along the kiln width direction. The central flow guiding unit (2) is composed of multiple straight arc-shaped flow guiding blades (21) arranged side by side on the central support beam (22). The transition flow guiding unit (3) is composed of multiple sets of S-shaped flow guiding blades (31) installed on the transition support base (32). The lateral enhancement flow guiding unit (4) includes an outwardly inclined arc-shaped flow guiding blade (41) and a blade assembly (42) movably connected to its side edge.
2. A flow guiding structure for a tile drying kiln according to claim 1, characterized in that: The radius of curvature of the straight arc-shaped guide vane (21) is 200-250mm, the surface is a concave smooth arc surface, and it is welded to the central support beam (22) at intervals. The central support beam (22) is fixed in the positioning groove of the main flow base (1) by bolts.
3. A flow guiding structure for a tile drying kiln according to claim 1, characterized in that: The S-shaped guide vane (31) has a front positive curvature and a rear lateral deflection curvature. Its bottom is embedded in the slot of the transition support (32) and fixed by fastening screws. The transition support (32) is welded to the main flow base (1).
4. A flow guiding structure for a tile drying kiln according to claim 1, characterized in that: The outward-inclined arc-shaped guide vane (41) has its guide surface tilted outward at 15° relative to the center line of the kiln body, and its side edge is provided with a connecting ear plate (43) with an elongated hole.
5. A flow guiding structure for a tile drying kiln according to claim 1, wherein: The wing assembly (42) includes a base and three small winglets distributed at 120°. Each small winglet is connected to the base by a torsion spring hinge, and the free end is fitted with a high-temperature resistant silicone sealing edge.
6. A flow guiding structure for a tile drying kiln according to claim 1, characterized in that: The main flow base (1) is a rectangular steel frame structure, and its two sides are provided with flange connection edges with bolt holes.