Contact type spring steel band sealing structure

Abstract

The utility model discloses a contact type spring steel band sealing structure, and relates to the field of hot air drying. The sealing structure comprises a connecting plate of a groove-shaped structure, a spring steel band, an inner end pressing plate, an outer end base plate and an outer end pressing plate, wherein the spring steel band is arranged above a horizontal section of the connecting plate, the inner side edge and the outer side edge of the spring steel band are straight, and the middle of the spring steel band is arched to be in an arc shape; the inner side edge of the spring steel band is connected to the connecting plate through the inner end pressing plate; the bottom face of the inner side extending section of the outer end pressing plate, the upper surface of the connecting plate and the inner side end face of the outer end base plate define an embedding and extending groove where the outer side edge of the spring steel band is inserted and embedded, and a telescopic gap is reserved. By utilizing the elastic deformation and displacement expansion of the spring steel band, the curtain plate vertical rib and the spring steel band are always kept in contact on the premise of smooth operation of the curtain plate, contact type sealing is formed, hot air in a drying room under the curtain plate is effectively prevented from overflowing, heat loss is reduced, and the device has the advantages of energy conservation, consumption reduction and cost reduction. And the operation environment can be improved to a certain extent.

Description

Technical Field

[0001] The utility model relates to the technical field of hot air drying equipment, in particular to a contact type spring steel belt sealing structure, which is especially suitable for hot air drying equipment in the textile field. Background Art

[0002] To reduce heat leakage and lower costs, seals are required at the inlet and outlet of the hot air dryer. Long-span curtain panels 9 often require ribs 8 extending from the non-working surface of the curtain panel to enhance its rigidity. Existing seals are mostly non-contact seals—that is, a windshield 6 is installed below the curtain panel 9 to block the hot air. However, to ensure the normal operation of the curtain panel 9 and prevent collision and interference between the windshield 6 and the active curtain panel 9, a gap must be left between the windshield 6 and the curtain panel 9 (see Figure 5 ). However, this gap inevitably leads to hot air leakage and heat overflow, which in turn leads to heat loss and increased costs. Summary of the Invention

[0003] This utility model addresses the shortcomings of the aforementioned prior art by providing a contact-type spring steel strip sealing structure. This utility model utilizes the elastic deformation and displacement expansion of the spring steel strip to ensure that the curtain plate's vertical ribs maintain contact with the spring steel strip at all times, while ensuring smooth operation of the curtain plate. This creates a contact seal, effectively preventing hot air from escaping from the drying chamber beneath the curtain plate, reducing heat loss, and offering the advantages of energy conservation, consumption reduction, and cost reduction, while also improving the operating environment to a certain extent.

[0004] The purpose of this utility model can be achieved through the following technical solutions:

[0005] The utility model provides a contact-type spring steel strip sealing structure, comprising a connecting plate with inner and outer sides bent at right angles to form a groove-shaped structure (providing an installation foundation for the spring steel strip and used to support the spring steel strip), a spring steel strip arranged above the horizontal section of the connecting plate, with the inner and outer sides having straight edges and an arc-shaped arch in the middle, the inner edge of the spring steel strip being connected to the inner end pressure plate of the connecting plate (used to press the inner edge of the spring steel strip) by cooperating with bolts, an outer end pad and an outer end pressure plate stacked from bottom to top and connected to the connecting plate by means of bolts (on the one hand, the outer end pad is used to press the outer end pressure plate, and the outer end pressure plate is used to support the outer end pad; at the same time, the outer end pad, the outer end pressure plate and the connecting plate cooperate to form an embedded extension groove for inserting the outer edge of the spring steel strip and capable of free expansion and contraction); enclosed by the bottom surface of the inner extension section of the outer end pressure plate, the upper surface of the connecting plate and the inner end surface of the outer end pad A stretching groove is formed for inserting the outer edge of the spring steel strip and reserving a stretching gap (for inserting the outer edge of the spring steel strip, and at the same time ensuring that the spring steel strip can freely move and stretch when subjected to stress and deformation); a deformation space with a height of H is formed between the arc section of the spring steel strip and the connecting plate (providing a guarantee for the elastic deformation of the spring steel strip under compression), the starting contact point and the disengagement point of the curtain plate ribs and the spring steel strip are, and the distance between the starting contact point and the disengagement point is greater than or equal to the spacing between two adjacent curtain plate ribs (ensuring that during the operation of the curtain plate, the bottom end face of at least one curtain plate rib is in a squeeze contact state with the arc section of the spring steel strip, that is, ensuring that a contact seal is formed between the bottom end face of the curtain plate ribs and the spring steel strip, thereby effectively preventing the hot air from overflowing from the drying room under the curtain plate, reducing heat loss, saving energy and reducing consumption, and reducing costs).

[0006] The gap between the outer end surface of the spring steel strip and the inner end surface of the outer end pad in the present invention is the telescopic gap, and the value of the telescopic gap is greater than the difference between the length of the arc segment in the original state of the spring steel strip and the corresponding chord length (the telescopic gap is the free telescopic space reserved for the spring steel strip due to elastic deformation).

[0007] When the arc section of the spring steel strip described in the present invention is in its original state, the height H of the deformation space is greater than the distance between the bottom end surface of the curtain plate vertical rib and the connecting plate (ensuring that the bottom end surface of the curtain plate vertical rib can definitely contact the arc section of the spring steel strip and be squeezed to produce deformation during the operation of the curtain plate).

[0008] The right-angled bend of the inner side edge of the connecting plate in the present invention is connected to the wind shield arranged inside the drying room by means of bolts (the wind shield provides an installation basis and a support basis for the connecting plate).

[0009] The design principle of this utility model is as follows:

[0010] The utility model comprises a spring steel strip having straight inner and outer edges and an arc-shaped arch in the middle, mounted above a connecting plate. The inner edge of the spring steel strip is connected to the connecting plate by means of an inner pressure plate and bolts, and the outer edge of the spring steel strip is freely inserted into an extension groove with a reserved extension gap, the extension groove being formed by the bottom surface of the inner extension section of the outer pressure plate, the upper surface of the connecting plate, and the inner end surface of the outer pad. The outer pad and the outer pressure plate are stacked from bottom to top and connected to the connecting plate by bolts. Because the spring steel strip has sufficient deformation and displacement and expansion space, the spring steel strip deforms and expands and contracts after contacting the curtain plate ribs during operation of the curtain plate. This ensures that the curtain plate ribs and the spring steel strip always maintain contact, forming a contact seal, while maintaining smooth operation of the curtain plate. This effectively prevents hot air from escaping from the drying chamber under the curtain plate, reduces heat loss, and has the advantages of energy saving, consumption reduction, and cost reduction, while also improving the operating environment to a certain extent.

[0011] Comparison of the use effect between this utility model and the traditional non-contact seal:

[0012] According to user feedback from on-site use, when a dryer equipped with a traditional non-contact seal is operating normally, operators standing near the non-contact seal outside the drying room will experience a noticeable heat wave. However, when a dryer equipped with the present invention is operating normally, operators standing near the present invention outside the drying room experience no significant temperature change (compared to the local air temperature). This further demonstrates that the present invention effectively prevents hot air from escaping from the drying room beneath the curtain, significantly reducing heat loss, offering the advantages of energy conservation, consumption reduction, and cost reduction, while also improving the operating environment to a certain extent.

[0013] For example, in a dryer with a 3m internal baffle, a conventional non-contact seal typically uses a 10-15mm gap between the baffle and curtain plate to prevent expansion. Based on a dryer wind speed of 2m / s, a drying room temperature of 130°C, a room temperature of 20°C, and electric heating, the contact seal of the present invention saves approximately 1200kW of electricity annually compared to a similar model with a conventional non-contact seal. This demonstrates that the present invention significantly reduces heat loss, offering advantages in energy conservation, consumption reduction, and cost reduction.

[0014] The beneficial technical effects of the present utility model are as follows:

[0015] The utility model utilizes the elastic deformation and displacement expansion and contraction of the spring steel belt to ensure that the vertical ribs of the curtain plate always maintain contact with the spring steel belt under the premise of smooth operation of the curtain plate, forming a contact seal, effectively preventing the hot air in the drying room under the curtain plate from overflowing, reducing heat loss, and having the advantages of energy saving, consumption reduction and cost reduction, while also improving the operating environment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0018] Figure 3 It is a critical state (ie, M=P) sealing schematic diagram of the present invention.

[0019] Figure 4 It is a sealing schematic diagram of the utility model in a general state (i.e., M>P).

[0020] Figure 5 It is a sealing diagram of traditional non-contact sealing.

[0021] Explanation of the part numbers in the figure: 1. Connecting plate, 2. Inner end pressure plate, 3. Spring steel strip, 4. Outer end pressure plate; 5. Outer end pad, (6. Wind deflector, 7. Embedded extension groove, 8. Curtain plate rib, 9. Curtain plate, L, expansion gap, Q, starting contact point, Q', disengagement point, M, distance between starting contact point and disengagement point, P, spacing between two adjacent curtain plate ribs, X, curtain plate running direction, H, height of the deformation space in the original state. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] like Figures 1 to 5As shown, a contact-type spring steel strip sealing structure of the present invention includes a connecting plate 1 with inner and outer sides bent at right angles to form a groove structure (providing a mounting base for the spring steel strip 3 and used to support the spring steel strip 3), a spring steel strip 3 arranged above the horizontal section of the connecting plate 1, with inner and outer sides having straight edges and an arc-shaped arch in the middle, the inner edge of the spring steel strip 3 being connected to the inner end pressure plate 2 of the connecting plate 1 (used to press the inner edge of the spring steel strip 3) by cooperating with bolts, an outer end pad 5 and an outer end pressure plate 4 stacked from bottom to top and connected to the connecting plate by means of bolts (on the one hand, the outer end pad 5 is used to press the outer end pressure plate 4, and the outer end pressure plate 4 is used to support the outer end pad 5; at the same time, the outer end pad 5, the outer end pressure plate 4 cooperate with the connecting plate 1 to enclose an embedding groove 7 for inserting the outer edge of the spring steel strip and capable of free expansion and contraction); The bottom surface of the inner extension section of the end pressure plate 4, the upper surface of the connecting plate 1, and the inner end surface of the outer end pad 5 together form an insertion groove 7 for inserting the outer edge of the spring steel strip and reserving an expansion gap L (for inserting the outer edge of the spring steel strip 3, while ensuring that the spring steel strip 3 can freely move and expand when subjected to force and deformation); a deformation space of height H is formed between the circular arc section of the spring steel strip 3 and the connecting plate 1 (providing a guarantee for the elastic deformation of the spring steel strip 3 under compression). The curtain plate rib 8 and the spring steel strip 3 have a starting contact point Q and a disengagement point Q'. The distance M between the starting contact point Q and the disengagement point Q' is greater than or equal to the spacing P between two adjacent curtain plate ribs 8 (ensuring that during the operation of the curtain plate, the bottom end surface of at least one curtain plate rib 8 is in a compressive contact state with the arc section of the spring steel strip 3 - Figure 3 The critical state of M=P is shown. The bottom end surface of one curtain plate rib 8 is always in a state of extrusion contact with the arc section of the spring steel strip 3. Figure 4 In the general state of M>P, the bottom end surfaces of the two curtain plate ribs 8 are always in a state of extrusion contact with the arc section of the spring steel strip 3. This ensures that the bottom end surfaces of the curtain plate ribs 8 and the spring steel strip 3 form a contact seal, effectively preventing the hot air in the drying room under the curtain plate from escaping, reducing heat loss, energy consumption, and costs.

[0024] In the present invention, the gap between the outer end surface of the spring steel strip 3 and the inner end surface of the outer end pad 5 is the telescopic gap L, and the value of the telescopic gap L is greater than the difference between the length of the arc segment in the spring steel strip 3 in the original state and the corresponding chord length (the telescopic gap L is the free telescopic space reserved for the displacement of the spring steel strip 3 caused by elastic deformation).

[0025] When the arc segment of the spring steel strip 3 described in the present invention is in its original state, the height H of the deformation space is greater than the distance between the bottom end surface of the curtain plate rib 8 and the connecting plate 1 (ensuring that the bottom end surface of the curtain plate rib 8 can definitely contact the arc segment of the spring steel strip 3 and be squeezed to produce deformation during the operation of the curtain plate).

[0026] The right-angled bend of the inner side edge of the connecting plate 1 of the present invention is connected to the wind shield 6 arranged inside the drying room by means of bolts (the wind shield 6 provides an installation basis and a support basis for the connecting plate 1).

[0027] The specific usage of this utility model is as follows:

[0028] According to the above structural description and the positional relationship shown in the attached drawings, assemble the utility model and connect the inner right-angled edge of the connecting plate 1 to the windshield 6 arranged inside the drying room by bolts. During the operation of the curtain plate, the bottom end surface of at least one curtain plate rib 8 is in a state of extrusion contact with the arc section of the spring steel strip 3. Figure 3 The critical state of M=P is shown. The bottom end surface of one curtain plate rib 8 is always in a state of extrusion contact with the arc section of the spring steel strip 3. Figure 4 In the general state of M>P, the bottom end surfaces of two curtain plate ribs 8 are always in a state of compressive contact with the arcuate section of the spring steel strip 3. Upon contact, the spring steel strip 3 deforms and stretches, ensuring that the curtain plate ribs 8 and the spring steel strip 3 maintain contact while the curtain plate 9 operates smoothly, forming a contact seal. This effectively prevents hot air from escaping from the drying room below the curtain plate, reducing heat loss, saving energy, and lowering costs, while also improving the operating environment to a certain extent.

Claims

1. A contact spring steel strip sealing structure, characterized in that: The sealing structure comprises a connecting plate (1) whose inner and outer sides are bent at right angles to form a groove-shaped structure, a spring steel strip (3) arranged above the horizontal section of the connecting plate (1) and having straight inner and outer sides and an arc-shaped arch in the middle, the inner side edge of the spring steel strip (3) being connected to the inner end pressure plate (2) of the connecting plate (1) by means of bolts, an outer end pad (5) and an outer end pressure plate (4) being stacked from bottom to top and connected to the connecting plate by means of bolts; the bottom surface of the inner side extension section of the outer end pressure plate (4), the connecting plate (1) and the outer end pressure plate (5) are connected to the connecting plate by means of bolts. The upper surface of the spring steel strip (3) and the inner end surface of the outer end pad (5) are combined to form an embedding groove (7) for embedding the outer edge of the spring steel strip and reserving a telescopic gap (L); a deformation space with a height of H is formed between the arc segment of the spring steel strip (3) and the connecting plate (1); the starting contact point (Q) and the disengagement point (Q') of the curtain plate rib (8) and the spring steel strip (3) are greater than or equal to the spacing (P) between two adjacent curtain plate ribs (8).

2. The contact-type spring steel strip sealing structure according to claim 1, characterized in that: The gap between the outer end surface of the spring steel strip (3) and the inner end surface of the outer end pad (5) is a telescopic gap (L), and the value of the telescopic gap (L) is greater than the difference between the length of the circular arc segment in the spring steel strip (3) in the original state and the corresponding chord length.

3. The contact-type spring steel strip sealing structure according to claim 1, characterized in that: When the arc section of the spring steel strip (3) is in its original state, the height H of the deformation space is greater than the distance between the bottom end surface of the curtain plate rib (8) and the connecting plate (1).

4. The contact-type spring steel strip sealing structure according to claim 1, characterized in that: The right-angled bend of the inner side edge of the connecting plate (1) is connected to the wind shield (6) arranged on the inner side of the drying room by means of bolts.

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