Flexible dynamic sealing structure

Abstract

This utility model belongs to the field of tobacco leaf re-drying technology and discloses a flexible dynamic sealing structure, including a flexible cloth, a first support, and a second support. The flexible cloth is pleated; the first end of the flexible cloth is sealed to the trough of the vibrating conveyor through the first support; the second end of the flexible cloth is sealed to the feed cover panel of the leaf-drying machine through the second support. This flexible dynamic sealing structure, by setting a pleated flexible cloth, with the first end of the flexible cloth sealed to the trough of the vibrating conveyor through the first support and the second end of the flexible cloth sealed to the feed cover panel of the leaf-drying machine through the second support, allows the flexible cloth to adaptably lengthen or shorten when the trough of the vibrating conveyor reciprocates and the relative position of the trough and the feed cover panel changes, effectively sealing the gap between the trough and the feed cover panel. Furthermore, the flexible cloth can support the broken tobacco leaves, preventing them from falling with the airflow.

Description

Technical Field

[0001] This utility model relates to the field of leaf re-drying technology, and in particular to a flexible dynamic sealing structure. Background Technology

[0002] In the tobacco processing industry, threshing and re-drying is a crucial link between tobacco leaf acquisition and cigarette production. Its core objective is to improve tobacco leaf quality and lay the foundation for subsequent processing through scientific heating, humidification, and loosening treatments. Among these, loosening and moistening the tobacco leaves are the core processes in the threshing and re-drying process, which mainly rely on the coordinated operation of a vibrating conveyor and a moistening machine. The vibrating conveyor loosens the tobacco leaves through its own movement, breaking up any clumps, and then stably transports the loosened leaves into the moistening machine. The moistening machine uses internal circulating hot air to precisely heat the incoming tobacco leaves, and in conjunction with subsequent humidification, ensures that the moisture and temperature of the tobacco leaves meet the process requirements, guaranteeing the leaves' flexibility and processing adaptability.

[0003] The working principle of a vibrating conveyor is to drive the trough to make periodic reciprocating motion through an eccentric mechanism, using the inertial force generated by this motion to loosen and transport the tobacco leaves. A leaf-humidifying machine, to ensure uniform heating, uses an internal circulating hot air system to heat the tobacco leaves evenly through the flow of hot air within the machine. However, due to the structural design and working characteristics of both, a special airflow environment is formed at the junction of the vibrating conveyor's trough and the leaf-humidifying machine's feed hood: on the one hand, the circulating hot air inside the leaf-humidifying machine diffuses towards the feed inlet during airflow; on the other hand, the reciprocating motion of the vibrating conveyor's trough easily causes dynamic air pressure changes in the space at the junction. Under the combined effect of these two factors, a continuous directional airflow is generated at the junction, causing a large amount of broken tobacco leaves to leak out from the bottom and sides of the trough.

[0004] Related technologies typically involve installing a soft-seal structure on the feed hood panel of the leaf humidifier, which fits tightly against the bottom and sides of the trough. However, this soft-seal structure can only adapt to a limited range of static deformation and cannot fully adapt to the dynamic movement of the trough to achieve real-time sealing. This results in frequent gaps between the trough and the feed hood panel, allowing loose smoke from inside the leaf humidifier to leak out with the airflow. Utility Model Content

[0005] The purpose of this invention is to provide a flexible dynamic sealing structure to solve the problem in the prior art where gaps frequently appear between the trough of the vibrating conveyor and the feed cover panel of the leaf humidifier, causing the broken tobacco leaves inside the leaf humidifier to leak out with the airflow. The flexible dynamic sealing structure of this invention can effectively seal the gap between the trough and the feed cover panel, and can also support the broken tobacco leaves to prevent them from falling with the airflow.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A flexible dynamic sealing structure, comprising:

[0008] Flexible fabric, wrinkled in shape;

[0009] The first support, wherein the first end of the flexible fabric is sealed to the trough of the vibrating conveyor through the first support;

[0010] The second support is used to seal the second end of the flexible cloth to the feed hood panel of the leaf moistening machine.

[0011] In some possible implementations, the first support has a U-shaped structure, the groove is a U-shaped groove, and the first support and the U-shaped groove are matched.

[0012] In some possible implementations, the first support includes a first U-shaped connecting plate and a second U-shaped connecting plate that are perpendicular to each other, the first U-shaped connecting plate being fitted and sealed to the U-shaped groove, and the second U-shaped connecting plate being sealed to the first end of the flexible fabric.

[0013] In some possible implementations, the second U-shaped connecting plate is detachably and sealed to the first end of the flexible fabric via a pressure strip.

[0014] In some possible implementations, the pressure strip has a U-shaped structure, the pressure strip and the second U-shaped connecting plate are fitted together, and the pressure strip and the second U-shaped connecting plate are detachably and sealingly connected.

[0015] In some possible implementations, the first end of the flexible fabric has a first U-shaped fold, the first U-shaped fold and the pressure strip are fitted together, and the first U-shaped fold and the pressure strip are detachably and sealingly connected.

[0016] In some possible implementations, the second bracket is configured as a plate-shaped U-shaped structure, the second bracket is attached to the feed hood panel, and the second bracket and the feed hood panel are detachably and sealingly connected.

[0017] In some possible implementations, the second end of the flexible fabric has a second U-shaped fold, the second U-shaped fold and the second support are fitted together, and the second U-shaped fold and the second support are detachably and sealingly connected.

[0018] In some possible implementations, the flexible fabric is configured as nylon fabric.

[0019] In some possible implementations, the surface of the nylon fabric is provided with an abrasion-resistant layer.

[0020] The beneficial effects of this utility model are:

[0021] The flexible dynamic sealing structure provided by this utility model uses a pleated flexible cloth. The first end of the flexible cloth is sealed to the trough of the vibrating conveyor through a first bracket, and the second end of the flexible cloth is sealed to the feed cover panel of the leaf humidifier through a second bracket. When the trough of the vibrating conveyor reciprocates and the relative position of the feed cover panel changes, the flexible cloth can adaptably stretch or shorten, effectively sealing the gap between the trough and the feed cover panel. In addition, the flexible cloth can support the broken tobacco leaves and prevent them from falling with the airflow. Attached Figure Description

[0022] Figure 1 This is an exploded view of the flexible dynamic sealing structure provided in this embodiment of the utility model;

[0023] Figure 2 This is an assembly view of the flexible dynamic sealing structure provided in this embodiment of the utility model.

[0024] In the picture:

[0025] 100. Flexible fabric; 110. First U-shaped fold; 120. Second U-shaped fold; 200. First support; 210. First U-shaped connecting plate; 220. Second U-shaped connecting plate; 300. Second support; 400. Pressure strip. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] like Figure 1 and Figure 2 As shown, this embodiment provides a flexible dynamic sealing structure, including a flexible cloth 100, a first support 200, and a second support 300. The flexible cloth 100 is pleated; the first end of the flexible cloth 100 is sealed to the trough of the vibrating conveyor through the first support 200; the second end of the flexible cloth 100 is sealed to the feed cover panel of the leaf humidifier through the second support 300.

[0031] The flexible dynamic sealing structure provided in this embodiment uses a pleated flexible cloth 100. The first end of the flexible cloth 100 is sealed to the trough of the vibrating conveyor through the first bracket 200, and the second end of the flexible cloth 100 is sealed to the feed cover panel of the leaf moistening machine through the second bracket 300. When the trough of the vibrating conveyor reciprocates and the relative position of the feed cover panel changes, the flexible cloth 100 can adaptably stretch or shorten, effectively sealing the gap between the trough and the feed cover panel. The flexible cloth 100 can also support the broken tobacco leaves and prevent them from falling with the airflow.

[0032] Optionally, the first support 200 has a U-shaped structure, and the groove is a U-shaped groove, with the first support 200 and the U-shaped groove being matched. By setting the first support 200 and the U-shaped groove to match, the positioning accuracy between the first support 200 and the U-shaped groove is high, effectively improving the assembly stability between the first support 200 and the U-shaped groove.

[0033] Furthermore, the first support 200 includes a first U-shaped connecting plate 210 and a second U-shaped connecting plate 220 that are perpendicular to each other. The first U-shaped connecting plate 210 is sealed and fitted to the U-shaped groove, and the second U-shaped connecting plate 220 is sealed and fitted to the first end of the flexible fabric 100. The two side plates of the first U-shaped connecting plate 210 are sealed and fitted to the two side walls of the U-shaped groove, which can limit the relative movement of the first U-shaped connecting plate 210 and the U-shaped groove in the groove width direction of the U-shaped groove and prevent lateral displacement caused by vibration. The bottom plate of the first U-shaped connecting plate 210 is sealed and fitted to the bottom wall of the U-shaped groove, which can ensure the positioning accuracy of the first U-shaped connecting plate 210 and the U-shaped groove in the direction perpendicular to the bottom wall of the U-shaped groove and avoid shaking caused by assembly gaps.

[0034] Optionally, the second U-shaped connecting plate 220 is detachably and sealed to the first end of the flexible fabric 100 via a pressure strip 400. This arrangement improves the ease of assembly and disassembly; in addition, the pressure strip 400 can buffer the vibration and impact of the second U-shaped connecting plate 220 on the flexible fabric 100.

[0035] Furthermore, the pressure strip 400 has a U-shaped structure, and the pressure strip 400 and the second U-shaped connecting plate 220 are matched and fitted together, with the pressure strip 400 and the second U-shaped connecting plate 220 being detachably and sealingly connected. By setting the pressure strip 400 to a U-shaped structure and matching it with the second U-shaped connecting plate 220, it is ensured that the pressure strip 400 covers the entire U-shaped side of the second U-shaped connecting plate 220, avoiding gaps between the pressure strip 400 and the second U-shaped connecting plate 220, improving positioning accuracy, and ensuring a sealing effect.

[0036] Preferably, the first end of the flexible fabric 100 has a first U-shaped fold 110, which is fitted to the pressure strip 400 and the first U-shaped fold 110 and the pressure strip 400 are detachably and sealingly connected. The first U-shaped fold 110 can increase the contact area and connection convenience between the flexible fabric 100 and the pressure strip 400, so that the flexible fabric 100 and the pressure strip 400 have a better sealing effect.

[0037] In this embodiment, the second bracket 300 is configured as a plate-shaped U-shaped structure. The second bracket 300 is attached to the feed hood panel, and the second bracket 300 and the feed hood panel are detachably and sealed together. The attachment of the second bracket 300 to the feed hood panel maximizes the contact area and reduces the gaps and stress blind spots between the second bracket 300 and the feed hood panel; the detachable and sealed connection between the second bracket 300 and the feed hood panel improves the convenience of assembly and disassembly.

[0038] Optionally, the second end of the flexible fabric 100 has a second U-shaped fold 120, which fits snugly against the second support 300, and the second U-shaped fold 120 and the second support 300 are detachably and sealed together. The second U-shaped fold 120 and the second support 300 adopt a double U-shaped design, which allows for precise fit and maximizes the contact area, reducing gaps and stress blind spots between the second U-shaped fold 120 and the second support 300; the detachable and sealed connection improves the ease of assembly and disassembly.

[0039] Optionally, the flexible fabric 100 is made of nylon. Nylon fabric has high tensile strength and abrasion resistance, and can withstand mechanical friction and heavy pulling for a long time without being easily damaged; nylon fabric can quickly recover after repeated stretching and folding; nylon fabric has strong chemical stability, and there is no need to worry about corrosion during long-term use, which can reduce maintenance costs.

[0040] Preferably, the surface of the nylon fabric is provided with an abrasion-resistant layer. By combining the nylon base fabric and the abrasion-resistant layer, the durability advantage of the nylon fabric can be enhanced, effectively improving its abrasion resistance and extending its service life. For example, the abrasion-resistant layer can be made of materials such as polyurethane, polyvinyl chloride, or ultra-high molecular weight polyethylene.

[0041] Optionally, the detachable sealing connection in this embodiment can be a connection via a sealing strip or a magnetic sealing connection.

[0042] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A flexible dynamic sealing structure, characterized in that, include: Flexible fabric (100), in a pleated state; The first support (200) is used to seal the first end of the flexible cloth (100) to the trough of the vibrating conveyor. The second support (300) is used to seal the second end of the flexible cloth (100) to the feed cover panel of the leaf moistening machine.

2. The flexible dynamic sealing structure according to claim 1, characterized in that, The first bracket (200) has a U-shaped structure, and the groove is a U-shaped groove. The first bracket (200) and the U-shaped groove are matched.

3. The flexible dynamic sealing structure according to claim 2, characterized in that, The first bracket (200) includes a first U-shaped connecting plate (210) and a second U-shaped connecting plate (220) that are perpendicular to each other. The first U-shaped connecting plate (210) is sealed and fitted to the U-shaped groove, and the second U-shaped connecting plate (220) is sealed and connected to the first end of the flexible cloth (100).

4. The flexible dynamic sealing structure according to claim 3, characterized in that, The second U-shaped connecting plate (220) is detachably and sealed to the first end of the flexible cloth (100) via a pressure strip (400).

5. The flexible dynamic sealing structure according to claim 4, characterized in that, The pressure strip (400) has a U-shaped structure. The pressure strip (400) and the second U-shaped connecting plate (220) are matched and fitted together. The pressure strip (400) and the second U-shaped connecting plate (220) are detachably and sealed together.

6. The flexible dynamic sealing structure according to claim 4, characterized in that, The first end of the flexible fabric (100) has a first U-shaped fold (110), the first U-shaped fold (110) and the pressure strip (400) are attached to each other, and the first U-shaped fold (110) and the pressure strip (400) are detachably and sealed together.

7. The flexible dynamic sealing structure according to claim 1, characterized in that, The second bracket (300) is configured as a plate-shaped U-shaped structure. The second bracket (300) is attached to the feed hood panel, and the second bracket (300) and the feed hood panel are detachably and sealed together.

8. The flexible dynamic sealing structure according to claim 7, characterized in that, The second end of the flexible fabric (100) has a second U-shaped fold (120), the second U-shaped fold (120) and the second bracket (300) are fitted together, and the second U-shaped fold (120) and the second bracket (300) are detachably and sealed together.

9. The flexible dynamic sealing structure according to claim 1, characterized in that, The flexible fabric (100) is made of nylon.

10. The flexible dynamic sealing structure according to claim 9, characterized in that, The surface of the nylon fabric is provided with a wear-resistant layer.

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