Flexible sealing belt for air bellow

Abstract

The invention belongs to the technical field of sintering machine air bellow sealing, and particularly relates to an air bellow flexible sealing belt. Comprising an upper bearing plate of an annular structure, and a lower bearing plate of an annular structure is arranged in the upper bearing plate; each of the upper bearing plate and the lower bearing plate is divided into at least three layers from inside to outside, all the layers are fixed together, and each layer is formed by sequentially splicing a plurality of heat-resistant steel plates; a sealing filler used for sealing is arranged between the upper bearing plate and the lower bearing plate, the upper bearing plate and the lower bearing plate are connected together through a connecting piece, the upper bearing plate, the sealing filler and the lower bearing plate integrally form a flexible belt body capable of being wound, and a plurality of channels which are communicated inside and outside are formed in the flexible belt body in the length direction of the flexible belt body. And an air supply port is formed in the channel in a penetrating manner. The design can simultaneously have good strength, high-temperature performance and flexible performance.

Description

Technical Field

[0001] The invention belongs to the technical field of sintering machine wind box sealing, and in particular relates to a flexible sealing belt for a wind box. Background Art

[0002] The trolley of a moving wind sintering machine needs to be supplied with air separately. Therefore, the air supply openings of the moving air supply box need to move in the same direction as the trolley at the same speed. To achieve this function, the moving sealing belt must have the ability to slide along the periphery of the fixed wind wall and maintain the sealing performance of its joint surface with the fixed wind wall. The relevant working principle is as Figure 6 shown.

[0003] The working condition environment inside the wind box is a high-temperature and negative-pressure environment. The highest wind temperature reaches 600 °C, and the maximum internal and external pressure difference reaches 0.2 MPa. In addition, the length of the sealing belt is very long, about 100 meters. The sealing belt operating under this working condition must simultaneously have strength, high-temperature performance, and flexible performance, and existing engineering materials cannot meet this requirement. Summary of the Invention

[0004] According to the deficiencies in the above prior art, the technical problem to be solved by the present invention is: to provide a flexible sealing belt for a wind box, which can simultaneously have good strength, high-temperature performance, and flexible performance.

[0005] The flexible sealing belt for the wind box includes an upper bearing plate in a ring structure, and a lower bearing plate in a ring structure is arranged inside the upper bearing plate;

[0006] The upper bearing plate and the lower bearing plate are each divided into at least three layers from the inside to the outside, and all layers are fixed together. Each layer is formed by splicing a number of heat-resistant steel plates in sequence;

[0007] A sealing filler for sealing is arranged between the upper bearing plate and the lower bearing plate. The upper bearing plate and the lower bearing plate are connected together by connecting pieces. The upper bearing plate, the sealing filler, and the lower bearing plate as a whole form a flexible belt body that can wind around. A number of channels communicating inside and outside are opened along the length direction of the flexible belt body, and air supply openings are inserted into the channels.

[0008] Further, the upper bearing plate is three layers, namely an upper outer plate, an upper middle plate, and an upper inner plate. The upper outer plate, the upper middle plate, and the upper inner plate are each formed by splicing rectangular heat-resistant steel plates with the same size specifications along the short sides in sequence;

[0009] The splicing seam positions of adjacent two rectangular heat-resistant steel plates on the upper outer plate and the upper inner plate correspond to the middle part of the upper middle plate.

[0010] Further, the lower bearing plate is three layers, namely a lower outer plate, a lower middle plate, and a lower inner plate. The lower outer plate, the lower middle plate, and the lower inner plate are each formed by splicing rectangular heat-resistant steel plates with the same size specifications along the short sides in sequence;

[0011] The splicing seam positions of two adjacent rectangular heat-resistant steel plates on the lower outer plate and the lower inner plate correspond to the middle part of the lower middle plate.

[0012] Furthermore, the upper bearing plate and the lower bearing plate are riveted together by rivets.

[0013] Furthermore, sealing assemblies for mobile sealing between the flexible belt body and the fixed air wall are provided on both annular side edges of the flexible belt body.

[0014] Furthermore, the sealing assembly includes a mobile sealing ring and a fixed sealing ring. The mobile sealing ring is sealingly installed on the flexible belt body, and the fixed sealing ring is used for sealing connection with the fixed air wall;

[0015] The cross-section of the mobile sealing ring is in a "Z" shape structure, and the cross-section of the fixed sealing ring is a trough structure with an upward opening;

[0016] One end of the mobile sealing ring is sealingly installed on the flexible belt body, and the other corresponding horizontal section and the vertical section connecting the two horizontal sections are both located in the trough body, wherein the vertical section is in sealing sliding fit with the inner trough wall of the trough body, and the horizontal section is in sealing sliding fit with the inner surface of the trough bottom of the trough body.

[0017] Furthermore, the sealing assembly further includes a mounting ring embedded in the side edge of the flexible belt body, and the mounting ring and the mobile sealing ring are of an integral structure.

[0018] Furthermore, the thickness of the heat-resistant steel plate is 1 mm to 3 mm.

[0019] Furthermore, the splicing seam gap between the heat-resistant steel plates is 0 mm to 1 mm.

[0020] Furthermore, the air supply port is installed in the channel through the air supply port flange.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] Both the upper bearing plate and the lower bearing plate of the flexible sealing belt of the present invention are composed of heat-resistant steel plates, having good heat resistance and being adaptable to the high-temperature environment of the sintering machine air box; at the same time, both the upper bearing plate and the lower bearing plate are riveted by three or more steel plates, having a certain strength and being able to withstand the negative pressure load of the sintering machine air box; the structural form adopted by the upper bearing plate and the lower bearing plate enables the flexible sealing belt to have good flexibility, and can be wound and laid around the upper, lower, front and rear four sides of the fixed air wall and slide along the four sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, are used to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention;

[0025] Figure 2 It is a schematic longitudinal sectional view of the present invention;

[0026] Figure 3 It is a schematic diagram of the connection of the air supply port;

[0027] Figure 4 It is a schematic sectional view of the annular seal assembly;

[0028] Figure 5 It is a diagram showing the positional relationship of the joints of the upper bearing plate;

[0029] Figure 6 It is a schematic diagram of the working principle of the flexible seal strip described in the background art.

[0030] Reference numerals: 1. Moving seal ring; 2. Fixed seal ring; 3. Air supply port; 4. Upper bearing plate; 4.1 Upper outer plate; 4.2 Upper middle plate; 4.3 Upper inner plate; 5. Riveting nail; 6. Sealing filler; 7. Lower bearing plate; 7.1 Lower outer plate; 7.2 Lower middle plate; 7.3 Lower inner plate; 8. Air supply port flange; 9. Bolt connection; 10. Joint of inner and outer side plates; 11. Joint of middle plates. Detailed Description of the Invention

[0031] The following further describes the present disclosure in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present disclosure. Additionally, it should be noted that for the convenience of description, only the parts related to the present disclosure are shown in the drawings.

[0032] It should be noted that, without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. The following will describe the present disclosure in detail with reference to the drawings and embodiments.

[0033] Embodiment

[0034] As Figures 1 to 4 shown, a flexible seal strip for an air box according to this embodiment includes an upper bearing plate 4 having an annular structure. An annular lower bearing plate 7 is provided inside the upper bearing plate 4. The upper bearing plate 4 and the lower bearing plate 7 are riveted together by riveting nails 5. In application, in addition to the riveting nails 5 as the connecting members, other existing connection methods can also be used as the connecting members, such as bolt connection, snap connection, or welding, etc.;

[0035] This embodiment will further illustrate the technology. The upper bearing plate 4 has three layers, namely the upper outer plate 4.1, the upper middle plate 4.2, and the upper inner plate 4.3. The upper outer plate 4.1, the upper middle plate 4.2, and the upper inner plate 4.3 are respectively formed by splicing rectangular heat-resistant steel plates with the same dimensional specifications along the short side in sequence;

[0036] Similarly, the lower bearing plate 7 has three layers, namely the lower outer plate 7.1, the lower middle plate 7.2, and the lower inner plate 7.3. The lower outer plate 7.1, the lower middle plate 7.2, and the lower inner plate 7.3 are respectively formed by splicing rectangular heat-resistant steel plates with the same dimensional specifications along the short side in sequence;

[0037] When splicing, the splicing seams at different positions preferably adopt the following method:

[0038] As Figure 5 shown, the splicing seam positions of two adjacent rectangular heat-resistant steel plates on the upper outer plate 4.1 and the upper inner plate 4.3 (that is, the inner and outer side plate joints 10 in Figure 5 ) correspond to the middle part of the upper middle plate 4.2 (preferably the center of the rectangular heat-resistant steel plate in the upper middle plate 4.2 in this embodiment, that is, the middle plate joint 11 in Figure 5 ); Similarly, the splicing seam positions of two adjacent rectangular heat-resistant steel plates on the lower outer plate 7.1 and the lower inner plate 7.3 correspond to the middle part of the lower middle plate 7.2 (preferably the center of the rectangular heat-resistant steel plate in the lower middle plate 7.2 in this embodiment). In other words, the joints of adjacent rectangular heat-resistant steel plates on the upper outer plate 4.1 and the upper inner plate 4.3 coincide with the center of the rectangular heat-resistant steel plate in the upper middle plate 4.2; the joints of adjacent rectangular heat-resistant steel plates in the upper middle plate 4.2 coincide with the centers of the rectangular heat-resistant steel plates in the upper outer plate 4.1 and the upper inner plate 4.3. The splicing method of the lower outer plate 7.1, the lower middle plate 7.2, and the lower inner plate 7.3 in the lower bearing plate 7 is the same as that in the upper bearing plate 4, and will not be described one by one here. This splicing method can effectively improve the sealing effect and is also very convenient for manufacturing.

[0039] In actual application, the specific number of layers of the upper bearing plate 4 and the lower bearing plate 7 can be specifically determined according to requirements. For example, when the heat-resistant steel plate is very thin, four or more layers can be used. In design, to ensure the use effect (with good strength, high-temperature performance, and flexibility at the same time), the upper bearing plate 4 and the lower bearing plate 7 are at least divided into three layers from the inside to the outside, and all layers are fixed together. Each layer is formed by splicing several heat-resistant steel plates in sequence.

[0040] To further ensure that this design has good sealing performance, a sealing filler 6 for sealing is provided between the upper bearing plate 4 and the lower bearing plate 7.

[0041] The upper bearing plate 4, the sealing packing 6 and the lower bearing plate 7 as described above integrally form a flexible belt that can bypass. A number of channels communicating inside and outside are provided along the length direction of the flexible belt, and the air supply ports 3 are installed in the channels. The entire flexible belt can perform belt drive like a conveyor belt. During transmission, the air supply ports 3 move in the same direction as the trolley at the same speed to achieve mobile air supply, and then bypass and reset after the air supply is completed.

[0042] As Figure 3 shown, the air supply ports 3 are installed in the channels through the air supply port flanges 8. Specifically, the air supply ports 3 rely on the air supply port flanges 8 and are fixed on the flexible belt through the bolt connection 9.

[0043] Combined with Figure 6 , in order to facilitate the mobile seal between the flexible belt and the fixed air wall (which can achieve relative movement and has a certain sealing effect), sealing components for mobile sealing between the flexible belt and the fixed air wall during the movement of the flexible belt are provided on both annular sides of the flexible belt.

[0044] Specifically:

[0045] As Figure 4 shown, the sealing component includes a mobile sealing ring 1 and a fixed sealing ring 2. The mobile sealing ring 1 is hermetically installed on the flexible belt, and the fixed sealing ring 2 is used for hermetically connecting with the fixed air wall; the cross-section of the mobile sealing ring 1 is in a "Z" shape structure, and the cross-section of the fixed sealing ring 2 is a trough structure with an upward opening; one end of the mobile sealing ring 1 is hermetically installed on the flexible belt, and the other corresponding horizontal section and the vertical section connecting between the two horizontal sections are both located in the trough, wherein the vertical section is in sealing sliding fit with the inner trough wall of the trough (which can achieve sliding and has a certain sealing effect), and the horizontal section is in sealing sliding fit with the inner surface of the trough bottom of the trough; the sealing component further includes a mounting ring embedded in the side of the flexible belt, and the mounting ring and the mobile sealing ring 1 are of an integral structure.

[0046] The above technical solution enables the mobile sealing ring 1 and the fixed sealing ring 2 to be mutually engaged, and the mobile sealing ring 1 can slide relatively along the engagement surface, ensuring the seal between the flexible belt and the fixed air wall, so that when the air supply ports 3 move with the sintering machine trolley, the air box will not leak air.

[0047] During application, the mobile sealing ring 1 and the fixed sealing ring 2 can also directly adopt the method of sealing sliding fit between surfaces. In order to improve the sealing effect, high-temperature-resistant lubricating grease can also be added at the mating part of the surfaces.

[0048] This embodiment further explains the technology. The thickness of the heat-resistant steel plate is 1 mm to 3 mm. When selecting, it can be 1 mm, or it can be 3 mm, or it can also be 2 mm or other numbers between 1 mm and 3 mm. The specific thickness is determined according to the length and width of the flexible sealing belt.

[0049] This embodiment will further illustrate the technology. The splicing seam gap between the heat-resistant steel plates is 0 mm to 1 mm. When selecting, it can be 0 mm, or 1 mm, or 0.5 mm or other numbers between 0 mm and 1 mm. The specific splicing seam gap is determined according to the flexibility required by the flexible sealing belt. The larger the gap, the better the flexibility.

[0050] In the description of this specification, the descriptions with reference to the terms "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0051] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0052] Those skilled in the art should understand that the above embodiments are only for clearly explaining the present disclosure and not for limiting the scope of the present disclosure. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A flexible seal belt for a bellows, comprising an upper bearing plate (4) in a ring structure, Characterized in that: An annular lower bearing plate (7) is arranged inside the upper bearing plate (4); The upper bearing plate (4) and the lower bearing plate (7) are each divided into at least three layers from the inside to the outside, and all layers are fixed together. Each layer is formed by splicing a number of heat-resistant steel plates in sequence; A sealing filler (6) for sealing is arranged between the upper bearing plate (4) and the lower bearing plate (7). The upper bearing plate (4) and the lower bearing plate (7) are connected together by a connecting piece. The upper bearing plate (4), the sealing filler (6) and the lower bearing plate (7) together form a flexible belt that can wind around. A number of channels communicating inside and outside are opened along the length direction of the flexible belt, and air supply ports (3) are installed in the channels.

2. The flexible seal belt for a bellows according to claim 1, Characterized in that: The upper bearing plate (4) is three layers, namely an upper outer plate (4.1), an upper middle plate (4.2) and an upper inner plate (4.3). The upper outer plate (4.1), the upper middle plate (4.2) and the upper inner plate (4.3) are respectively formed by splicing rectangular heat-resistant steel plates with the same size specifications in sequence along the short side; The splicing seam positions of adjacent two rectangular heat-resistant steel plates on the upper outer plate (4.1) and the upper inner plate (4.3) correspond to the middle part of the upper middle plate (4.2).

3. The flexible seal belt for a bellows according to claim 1 or 2, Characterized in that: The lower bearing plate (7) is three layers, namely a lower outer plate (7.1), a lower middle plate (7.2) and a lower inner plate (7.3). The lower outer plate (7.1), the lower middle plate (7.2) and the lower inner plate (7.3) are respectively formed by splicing rectangular heat-resistant steel plates with the same size specifications in sequence along the short side; The splicing seam positions of adjacent two rectangular heat-resistant steel plates on the lower outer plate (7.1) and the lower inner plate (7.3) correspond to the middle part of the lower middle plate (7.2).

4. The flexible seal belt for a bellows according to claim 3, Characterized in that: The upper bearing plate (4) and the lower bearing plate (7) are riveted together by rivet nails (5).

5. The flexible seal belt for a bellows according to claim 3, Characterized in that: Sealing components are arranged on both annular sides of the flexible belt for moving sealing between the flexible belt and the fixed air wall when the flexible belt moves.

6. The flexible seal belt for a bellows according to claim 5, Characterized in that: The sealing component includes a movable sealing ring (1) and a fixed sealing ring (2). The movable sealing ring (1) is sealed and installed on the flexible belt, and the fixed sealing ring (2) is used for sealing connection with the fixed air wall; The cross section of the movable sealing ring (1) is in a "Z" shape structure, and the cross section of the fixed sealing ring (2) is a groove structure with an upward opening; One end of the movable sealing ring (1) is sealed and installed on the flexible belt, and the other corresponding horizontal section and the vertical section connecting the two horizontal sections are both located in the groove body, wherein the vertical section is in sealed sliding fit with the inner groove wall of one side of the groove body, and the horizontal section is in sealed sliding fit with the inner surface of the groove bottom of the groove body.

7. The flexible seal belt for a bellows according to claim 6, Characterized in that: The sealing assembly further includes a mounting ring embedded in the side of the flexible belt body, and the mounting ring and the movable sealing ring (1) are of an integral structure.

8. The flexible bellows sealing belt according to claim 3, wherein: the thickness of the heat-resistant steel plate is 1 mm to 3 mm.

9. The flexible bellows sealing belt according to claim 8, wherein: the splicing joint gap between the heat-resistant steel plates is 0 mm to 1 mm.

10. The flexible bellows sealing belt according to claim 3, wherein: the air supply port (3) is installed in the channel through the air supply port flange (8).

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