Sponge skirt joint structure

Abstract

The utility model relates to a kind of sponge surrounding band joint structure.It solves the existing surrounding band joint place air leakage phenomenon and other technical problems, including the surrounding band joint of annular and around the periphery outside of fan end cover, and the surrounding band joint is formed by the surrounding of the two ends of fan surrounding band of flat band, one end of fan surrounding band has upper joint part and the other end has lower joint part corresponding to upper joint part, and the upper joint part and lower joint part are aligned by the pre-positioning assembly between upper joint part and lower joint part, and the upper joint part and lower joint part are connected by gear connection assembly between them.The advantage is that the pre-positioning assembly and gear connection assembly are used to make the connection between joints tight, which can effectively prevent the surrounding band joint from leaking air, thereby achieving a fully sealed state.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial fan equipment, specifically relating to a sponge belt joint structure. Background Technology

[0002] Effective protection of the fan end covers is crucial during the operation of fan equipment. It not only affects the stable operation of the equipment but also directly impacts its service life and operational efficiency. Currently, most industrial fan end covers use sponge bands to seal the gaps and prevent air leakage. However, the joints of these sponge bands are typically secured with wire, leading to significant air leakage. This poses a risk of pressure loss for the operating fan and allows harmful gases to escape from the duct, causing environmental pollution. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing a sponge webbing joint structure.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a sponge band joint structure, comprising a ring-shaped band joint that is wrapped around the outer side of the fan end cover. The band joint is formed by connecting and enclosing the two ends of a flat, strip-shaped fan band. One end of the fan band has an upper joint portion and the other end has a lower joint portion corresponding to the upper joint portion. A pre-positioning component is provided between the upper joint portion and the lower joint portion to align the upper joint portion and the lower joint portion. The upper joint portion and the lower joint portion are connected by a toothed connection component.

[0005] In the above-mentioned sponge webbing joint structure, the pre-positioning component includes a positioning insertion part disposed at the middle of one end of the upper joint portion near the lower joint portion, and the middle of one end of the lower joint portion near the upper joint portion has a positioning slot corresponding to the positioning insertion part, and the positioning insertion part is inserted into the positioning slot.

[0006] In the aforementioned sponge-shroud joint structure, the positioning insertion part is an isosceles trapezoidal structure, and the positioning slot is an isosceles trapezoidal shape that matches the positioning insertion part. Furthermore, the width of the positioning insertion part near the upper joint is greater than the width of the other end. Before the main tooth connection, the trapezoidal structure in the middle allows for quick initial lateral and longitudinal positioning of the upper and lower joints, ensuring accurate meshing of subsequent teeth and improving installation efficiency and accuracy. Simultaneously, the hypotenuse of the trapezoidal structure creates a self-locking effect after insertion, resisting lateral forces and making the pre-positioning state more stable, preventing displacement during fastening of the fixing seat.

[0007] In the aforementioned sponge webbing joint structure, the toothed connection assembly includes several upper teeth disposed at one end of the upper joint near the lower joint and located on both sides of the positioning insertion part. The lower joint near the upper joint is provided with several lower tooth grooves corresponding one-to-one with the upper teeth, and the upper teeth and lower tooth grooves are interlocked. This multiple-tooth meshing method significantly increases the effective connection area compared to planar butt joints. Simultaneously, the multiple teeth can evenly distribute the circumferential tension and vibration stress experienced by the webbing during operation, avoiding stress concentration and making the connection more reliable and durable.

[0008] In the above-mentioned sponge band joint structure, the upper tooth portion is triangular and the lower tooth groove matches the shape of the upper tooth portion.

[0009] In the aforementioned sponge webbing joint structure, the lower joint portion near the upper joint portion has several lower teeth located on both sides of the positioning slot. The lower teeth are formed between adjacent lower teeth. The lower teeth on both sides are right-angled trapezoids and flush with the sides of the lower joint portion near the upper joint portion. The remaining lower teeth are triangular structures matching the shape of the upper teeth. The right-angled trapezoidal structure on both sides, flush with the edge of the webbing, prevents the fragile, sharp triangular teeth from being exposed on the outermost side, preventing damage during handling and installation, and improving the structural strength and durability of the joint end. Simultaneously, the right-angled trapezoidal design allows for a smooth transition between the connection contour and the webbing body, reducing stress concentration points.

[0010] In the aforementioned sponge-coated joint structure, the upper joint portion has an upper fixing seat at the end away from the lower joint portion, and the lower joint portion has a corresponding lower fixing seat at the end away from the upper joint portion. The upper and lower fixing seats are joined together to form a rectangular structure, with the length of the upper fixing seat being shorter than that of the lower fixing seat. The upper and lower fixing seats are connected at the same end by a fixing bolt, and a sponge pad is provided on the side of the lower fixing seat away from the lower joint portion, which contacts the fan end cover. The fixing seat and bolt mechanism provide a strong and adjustable mechanical locking force, clamping both ends of the joint within the fixing seat, effectively resisting the tendency of the joint to open due to vibration or internal pressure.

[0011] In the aforementioned sponge band joint structure, the inner side of the upper fixing seat is provided with several upper fixing points that contact the upper joint portion, and the inner side of the lower fixing seat is provided with several lower fixing points that contact the lower joint portion. The upper fixing seat has upper vertical plates at both ends, and the lower fixing seat has lower vertical plates at both ends corresponding to the upper vertical plates, with all upper vertical plates located inside the lower fixing seat. The points can partially embed into the relatively soft sponge band, greatly increasing friction and preventing the band joint from sliding or pulling out within the fixing seat, achieving extremely secure fixation. The upper vertical plates, located inside the lower fixing seat, form a slot-like structure. This design better resists radial and lateral forces, preventing misalignment or separation of the fixing seat assembly itself, and enhancing the overall integrity and stability of the entire fixing structure.

[0012] In the above-mentioned sponge belt joint structure, the length of the fan belt is 6m, the width of the fan belt is 100mm, and the thickness of the fan belt is 30mm.

[0013] In the above-mentioned sponge belt joint structure, the length of both the upper joint and the lower joint is 60mm, and the angle of the lower tooth groove is 30°.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. This device utilizes a pre-positioning component and a toothed connection component to ensure a tight connection between joints, effectively preventing air leakage at the seam joint and achieving a fully sealed state.

[0015] 2. The device provides clear guidance for the installation process through its central isosceles trapezoidal positioning connector and slot design. Operators can quickly achieve initial centering, which greatly reduces the difficulty of installation and the technical requirements for operators, and improves work efficiency.

[0016] 3. This device provides a large effective connection area through the meshing of multiple teeth, which evenly distributes the circumferential tension to each tooth, avoiding stress concentration and fundamentally solving the problem of low tensile strength of sponge materials.

[0017] 4. The upper and lower fixing seats of the device provide strong clamping force through bolts, which is the main guarantee against centrifugal force and vibration. The internal fixing tips are embedded with sponge material, which generates great friction and prevents any form of sliding or pull-out. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the upper connector in this utility model.

[0020] Figure 3 This is a structural cross-sectional view of the lower connector in this utility model.

[0021] Figure 4 This is a structural cross-sectional view of the upper and lower fixed bases in this utility model.

[0022] In the figure: 1. Fan belt connector; 2. Upper connector part; 21. Lower connector part; 22. Pre-positioning component; 3. Positioning insertion part; 31. Positioning slot; 32. Tooth connection component; 4. Upper tooth part; 41. Lower tooth groove; 42. Lower tooth part; 43. Upper fixing seat; 5. Upper fixing tip; 51. Upper vertical plate; 52. Lower fixing seat; 6. Lower fixing tip; 61. Lower vertical plate; 62. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1-4 As shown, a sponge band joint structure includes a ring-shaped band joint 1 that is wrapped around the outer side of the fan end cover. The band joint 1 is formed by connecting the two ends of a flat strip-shaped fan band 2. One end of the fan band 2 has an upper joint portion 21 and the other end has a lower joint portion 22 corresponding to the upper joint portion 21. A pre-positioning component 3 is provided between the upper joint portion 21 and the lower joint portion 22 to align the upper joint portion 21 and the lower joint portion 22. The upper joint portion 21 and the lower joint portion 22 are connected by a toothed connection component 4.

[0025] Combination Figure 1 and Figure 2 As shown, the pre-positioning component 3 includes a positioning insertion part 31 disposed at the middle of one end of the upper connector 21 near the lower connector 22, and a positioning slot 32 corresponding to the positioning insertion part 31 is disposed at the middle of one end of the lower connector 22 near the upper connector 21, and the positioning insertion part 31 is inserted into the positioning slot 32.

[0026] The positioning insertion part 31 has an isosceles trapezoidal structure, and the positioning slot 32 has an isosceles trapezoidal shape that matches the positioning insertion part 31. The width of the positioning insertion part 31 at the end near the upper connector 21 is greater than the width of the other end. Before the main tooth connection, the trapezoidal structure in the middle can be inserted to quickly achieve the initial lateral and longitudinal positioning of the upper and lower connectors, ensuring that the subsequent teeth can accurately mesh, improving installation efficiency and accuracy. At the same time, the inclined side of the trapezoidal structure can form a certain self-locking effect after insertion, resisting lateral forces, making the pre-positioning state more stable, and less prone to displacement when tightening the fixing seat.

[0027] Specifically, the toothed connection assembly 4 includes several upper toothed portions 41 disposed at one end of the upper connector 21 near the lower connector 22 and located on both sides of the positioning insertion portion 31. The lower connector 22 at one end near the upper connector 21 is provided with several lower toothed grooves 42 corresponding one-to-one with the upper toothed portions 41, and the upper toothed portions 41 and lower toothed grooves 42 are interlocked. Compared to planar butt joints, the use of multiple toothed engagements significantly increases the effective connection area. Simultaneously, the multiple teeth can evenly distribute the circumferential tension and vibration stress experienced by the belt during operation, avoiding stress concentration and making the connection more reliable and durable.

[0028] Furthermore, the upper tooth portion 41 is triangular in shape and the lower tooth alveolar 42 matches the shape of the upper tooth portion 41.

[0029] Furthermore, the lower connector 22, near the upper connector 21, has several lower teeth 43 located on both sides of the positioning slot 32. Lower tooth grooves 42 are formed between adjacent lower teeth 43. The lower teeth 43 on both sides are right-angled trapezoids and flush with the sides of the lower connector 22 near the upper connector 21. The remaining lower teeth 43 are triangular structures matching the shape of the upper teeth. The right-angled trapezoidal structure on both sides, flush with the edge of the shroud, prevents the fragile, sharp triangular teeth from being exposed on the outermost side, preventing damage during handling and installation, and improving the structural strength and durability of the connector end. Simultaneously, the right-angled trapezoidal design allows for a smooth transition between the contour of the connection and the shroud body, reducing stress concentration points.

[0030] like Figure 4 As shown, the upper connector 21 has an upper fixing seat 5 at the end away from the lower connector 22, and the lower connector 22 has a lower fixing seat 6 corresponding to the upper fixing seat 5 at the end away from the upper connector 21. The upper fixing seat 5 and the lower fixing seat 6 are assembled vertically to form a rectangular structure. The length of the upper fixing seat 5 is shorter than the length of the lower fixing seat 6. The upper fixing seat 5 and the lower fixing seat 6 are connected at the same end by a fixing bolt. The side of the lower fixing seat 6 away from the lower connector 22 has a sponge pad that contacts the fan end cover. The fixing seat and bolt mechanism provide a strong and adjustable mechanical locking force, clamping both ends of the connector in the fixing seat, effectively resisting the tendency of the connector to open due to vibration or internal pressure.

[0031] The upper fixing seat 5 has several upper fixing points 51 on its inner side that contact the upper connector 21, and the lower fixing seat 6 has several lower fixing points 61 on its inner side that contact the lower connector 22. The upper fixing seat 5 has upper vertical plates 52 at both ends, and the lower fixing seat 6 has lower vertical plates 62 at both ends corresponding to the upper vertical plates 52, with the upper vertical plates 52 all located inside the lower fixing seat 6. The points can partially embed into the relatively soft sponge band 2, greatly increasing friction and preventing the band connector 2 from sliding or pulling out within the fixing seat, achieving extremely secure fixation. The upper vertical plates 52, located inside the lower fixing seat 6, form a slot-like structure. This design better resists radial and lateral forces, preventing misalignment or separation of the fixing seat assembly itself, and enhancing the overall integrity and stability of the entire fixing structure.

[0032] like Figure 1 As shown, the length of the fan enclosure 2 is 6m, the width of the fan enclosure 2 is 100mm, and the thickness of the fan enclosure 2 is 30mm.

[0033] Both the upper connector 21 and the lower connector 22 are 60mm in length, and the angle of the lower tooth groove 42 is 30°. Both the upper connector 21 and the lower connector 22 have a pre-reserved length, which is cut according to the actual site conditions during installation before final installation to achieve a sealing effect.

[0034] The principle of this embodiment is as follows: When the fan enclosure 2 needs to be circumferentially enclosed around the fan end cover, first align the positioning insertion part 31 of the upper connector 21 with the positioning slot 32 of the lower connector 22 and insert it into the slot; after pre-positioning, the upper teeth 41 on both sides of the upper connector 21 naturally align with the corresponding lower teeth grooves 42 of the lower connector 22, and then the upper teeth 41 are inserted into the corresponding lower teeth grooves 42; first, assemble the upper fixing seat 5 of the upper connector 21 and the lower fixing seat 6 of the lower connector 22, with the inner side of the upper fixing seat 5... The upper fixed tip 51 is in close contact with the surface of the upper connector 21, and the lower fixed tip 61 on the inner side of the lower fixed seat 6 is in close contact with the surface of the lower connector 22. The sharp end of the tip can be slightly embedded in the surface of the sponge band to limit the lateral sliding between the fixed seat and the connector. The upper vertical plate 52 of the upper fixed seat 5 is located inside the lower vertical plate 62 of the lower fixed seat 6, and the two form a nested fit. Then, the upper vertical plate 52 and the lower vertical plate 62 are connected by fixing bolts to further enhance the fixing stability.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document frequently uses terms such as shroud connector 1, fan shroud 2, upper connector 21, lower connector 22, pre-positioning assembly 3, positioning insertion part 31, positioning slot 32, toothed connection assembly 4, upper toothed part 41, lower toothed groove 42, lower toothed part 43, upper fixing seat 5, upper fixing tip 51, upper vertical plate 52, lower fixing seat 6, lower fixing tip 61, and lower vertical plate 62, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A sponge sheath joint structure, comprising an annular sheath joint (1) wrapped around the outer circumference of a fan end cover, characterized in that, The aforementioned belt joint (1) is formed by connecting the two ends of a flat, strip-shaped fan belt (2). One end of the fan belt (2) has an upper joint (21) and the other end has a lower joint (22) corresponding to the upper joint (21). A pre-positioning component (3) is provided between the upper joint (21) and the lower joint (22) to align the upper joint (21) and the lower joint (22). The upper joint (21) and the lower joint (22) are connected by a toothed connection component (4).

2. The sponge webbing joint structure according to claim 1, characterized in that, The prepositioning component (3) includes a positioning insertion part (31) disposed at the middle of one end of the upper connector (21) near the lower connector (22). The middle of one end of the lower connector (22) near the upper connector (21) has a positioning slot (32) corresponding to the positioning insertion part (31). The positioning insertion part (31) is inserted into the positioning slot (32).

3. The sponge webbing joint structure according to claim 2, characterized in that, The positioning plug (31) has an isosceles trapezoidal structure and the positioning slot (32) has an isosceles trapezoidal shape that matches the positioning plug (31). The width of the positioning plug (31) at one end near the upper connector (21) is greater than the width at the other end.

4. A sponge webbing joint structure according to claim 2 or 3, characterized in that, The toothed connection assembly (4) includes several upper toothed portions (41) disposed at one end of the upper connector (21) near the lower connector (22) and located on both sides of the positioning insertion portion (31). The lower connector (22) is provided with several lower toothed grooves (42) corresponding to the upper toothed portions (41) at one end. The upper toothed portions (41) and the lower toothed grooves (42) are connected to each other.

5. The sponge webbing joint structure according to claim 4, characterized in that, The upper tooth portion (41) is triangular and the lower tooth alveolar portion (42) matches the shape of the upper tooth portion (41).

6. The sponge webbing joint structure according to claim 5, characterized in that, The lower connector (22) is provided with a plurality of lower teeth (43) located on both sides of the positioning slot (32) at one end near the upper connector (21). The lower tooth grooves (42) are formed between two adjacent lower teeth (43). The lower teeth (43) located on both sides of the plurality of lower teeth (43) are right trapezoids and are flush with the two sides of the lower connector (22) near the upper connector (21). The remaining lower teeth (43) of the plurality of lower teeth (43) are triangular structures that match the shape of the upper teeth.

7. The sponge webbing joint structure according to claim 1, characterized in that, The upper connector (21) is provided with an upper fixing seat (5) at the end away from the lower connector (22), and the lower connector (22) is provided with a lower fixing seat (6) corresponding to the upper fixing seat (5) at the end away from the upper connector (21). The upper fixing seat (5) and the lower fixing seat (6) are assembled into a rectangular structure. The length of the upper fixing seat (5) is less than the length of the lower fixing seat (6). The upper fixing seat (5) and the lower fixing seat (6) are connected at the same end by fixing bolts. The lower fixing seat (6) is provided with a sponge pad that contacts the fan end cover on the side away from the lower connector (22).

8. The sponge webbing joint structure according to claim 7, characterized in that, The upper fixing seat (5) has several upper fixing points (51) that contact the upper connector (21) on its inner side, and the lower fixing seat (6) has several lower fixing points (61) that contact the lower connector (22) on its inner side. The upper fixing seat (5) has upper vertical plates (52) at both ends, and the lower fixing seat (6) has lower vertical plates (62) at both ends that correspond to the upper vertical plates (52). The upper vertical plates (52) are all located inside the lower fixing seat (6).

9. The sponge webbing joint structure according to claim 1, characterized in that, The length of the fan enclosure (2) is 6m, the width of the fan enclosure (2) is 100mm, and the thickness of the fan enclosure (2) is 30mm.

10. A sponge webbing joint structure according to claim 4, characterized in that, The length of the upper connector (21) and the lower connector (22) is 60 mm, and the angle of the lower tooth groove (42) is 30°.

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