Sealing strip limiting device on vacuum roller

Abstract

The utility model relates to a sealing strip limiting device on a vacuum roller. The sealing strip limiting device comprises a width, a supporting piece arranged on the side edge of the width, a sealing strip for sealing and a limiting piece for limiting the moving direction of the sealing strip. A first groove is formed in the supporting piece; a spring is arranged at the bottom of the first groove; the supporting piece is arc-shaped; a plurality of second grooves are formed in the bottom wall of the first groove; a plurality of second grooves are formed along the circumference of the bottom of the first groove in an array manner; a bolt is embedded in the second groove for fixing; two groups of sealing strips are oppositely arranged; a third groove is formed in the sealing strip; the limiting piece is arranged on the supporting piece in a threaded and penetrating mode, and the limiting piece is arranged in the third groove in a penetrating mode. The direction of the third groove is parallel to the side wall of the supporting piece. The problems that a sealing strip and a spring are directly embedded into the side wall of a door width when a vacuum roller is assembled, so that the assembling process of the sealing strip is complex, and the moving direction of the sealing strip cannot be controlled are solved.

Description

Technical Field

[0001] This utility model relates to the field of vacuum rollers, and in particular to a sealing strip limiting device for a vacuum roller. Background Technology

[0002] In existing technologies, the vacuum system is an indispensable part of papermaking. Vacuum rolls such as vacuum flat rolls and vacuum transfer rolls on paper machines play a role in transferring pulp between different sections. The vacuum is achieved by the sealing strips and sealing blocks on the roll core being tightly attached to the roll shell, forming a sealed space with the help of a water ring formed by lubricating water, and then being drawn in by a blower. Therefore, the service life of the sealing strips directly determines the working life of the vacuum rolls. Existing assembly methods for vacuum rolls involve directly embedding the sealing strips and springs into the side wall of the fabric, which makes the assembly process of the sealing strips complex and the movement direction of the sealing strips uncontrollable. Utility Model Content

[0003] This application provides a sealing strip limiting device for a vacuum roller, which solves the problem in the prior art where the sealing strip and spring are directly embedded into the side wall of the vacuum roller, making the assembly process of the sealing strip complicated and the movement direction of the sealing strip uncontrollable.

[0004] The technical solutions adopted in the embodiments of this application are as follows.

[0005] A sealing strip limiting device for a vacuum roller includes a width, a support member disposed on the side of the width, a sealing strip, and a limiting member restricting the movement direction of the sealing strip; the support member has a first groove; a spring is disposed at the bottom of the first groove; the support member is arc-shaped; a plurality of second grooves are formed on the bottom wall of the first groove; a plurality of second grooves are arranged in an array along the bottom circumference of the first groove; bolts are embedded in the second grooves for fixing; two sets of sealing strips are arranged opposite each other; a third groove is formed on the sealing strip; the limiting member is threaded through the support member and passes through the third groove; the direction of the third groove is parallel to the side wall of the support member.

[0006] As a further improvement to the above technical solution: a first block and a fourth groove are provided on the opposite sidewalls of the two sets of sealing strips; the width of the fourth groove is the same as that of the first block; the first block of one set of sealing strips is embedded in the fourth groove of the other set of sealing strips.

[0007] As a further improvement to the above technical solution: the limiting member includes a bolt and a limiting block that slides in the third groove; the diameter of the limiting block corresponds to the diameter of the third groove; the bolt is threaded onto the support member and passes through the limiting block and the third groove.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0009] 1. Due to the adoption of an arc-shaped design for the support component that matches the roller shell, the spring at the bottom of the first groove provides uniform preload, ensuring the initial pressure of the sealing strip against the roller shell and avoiding errors from manual adjustment; the limiting component consists of bolts and limiting blocks, with the limiting blocks sliding within the third groove of the sealing strip. The position of the limiting blocks is adjusted via threads, forcibly constraining the sealing strip to move only along the direction of the third groove (parallel to the sidewall of the support component), eliminating the risk of lateral offset; the circumferential array of bolts embedded in the second groove at the bottom of the first groove enhances the structural rigidity of the support component and prevents misalignment of the sealing strip due to deformation under stress; the sidewalls of the two sets of sealing strips are designed with... The first block and the fourth groove (with the same width) are interlocked to form a continuous sealing surface, simplifying the assembly process while improving sealing performance and preventing liquid from seeping in from the joint. The spring continuously compensates for the wear of the sealing strip, and the sliding fit between the limiting block and the third groove allows the sealing strip to self-adjust axially, adapting to the dynamic deformation of the vacuum roller when it rotates at high speed and maintaining stable sealing pressure. The modular sealing strip and the limiting component are fixed by bolts, eliminating the need for complex installation. The sliding guide design of the limiting block and the third groove ensures that the sealing strip moves only in the set direction, avoiding local wear or sealing failure caused by skew. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the sealing strip limiting device on the vacuum roller in this utility model.

[0011] Figure 2 This is a schematic diagram of the sealing strip in this utility model.

[0012] Figure 3 This is a schematic diagram of the structure of the vacuum roller in this utility model.

[0013] In the diagram: 1. Doorway; 2. Support component; 21. First groove; 22. Spring; 23. Second groove; 3. Sealing strip; 31. Third groove; 32. First block; 33. Fourth groove; 4. Limiting component; 41. Bolt; 42. Limiting block. Detailed Implementation

[0014] This application provides a sealing strip limiting device for a vacuum roller, which solves the problem in the prior art where the sealing strip and spring are directly embedded into the side wall of the vacuum roller, making the assembly process of the sealing strip complicated and the movement direction of the sealing strip uncontrollable.

[0015] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:

[0016] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] A structure for preventing liquid from seeping into a bearing includes a support member 1, a span 2 rotating on the support member 1, a roller body 3 rotating on the span 2, a bearing 4 supporting the roller body 3, a first seal 5 sealing the bearing 4, and a second seal 6 sealing the bearing 4. A first groove 11 is formed in the support member 1; the bearing 4 is located in the first groove 11; an oil injection hole 12 is formed on the support member 1; the oil injection hole 12 corresponds to the first groove 11; the first seal 5 is provided on the support member 1; the second seal 6 is provided on the roller body 3; a second groove 13 is formed at the bottom of the support member 1; the second groove 13 corresponds to the first groove 11, and an oil return hole 14 for easy oil drainage is formed at the bottom of the second groove 13.

[0018] The first sealing element 5 includes a first block 51, a second block 52 disposed on the first block 51, and a third block 53 disposed on the first block 51; the second sealing element 6 has a third groove 61; the second block 52 is located in the third groove 61; a gap is left between the third groove 61 and the second block 52; one end of the second sealing element 6 is inserted between the second block 52 and the third block 53, and the other end of the second sealing element 6 is located outside the second block 52; a gap is left between the first sealing element 5 and the second sealing element 6; a reflux hole 521 is opened at the bottom of the second block 52.

[0019] The inner and outer walls of the second piece 52 are both provided with flow channels 522.

[0020] The second seal 6 is provided with a protrusion 62 to initially prevent liquid from flowing into the first seal 5; the protrusion 62 is triangular in shape.

[0021] Both the first seal 5 and the second seal 6 are fixed by bolts.

[0022] The gap between the first seal 5 and the second seal 6 is 1.5 mm.

[0023] The support member 2 adopts an arc-shaped design that matches the roller shell. The spring 22 at the bottom of the first groove 21 provides uniform preload to ensure the initial pressure of the sealing strip 3 against the roller shell and avoid manual adjustment errors. The limiting member 4 consists of a bolt 41 and a limiting block 42. The limiting block 42 slides in the third groove 31 of the sealing strip 3. The position of the limiting block 42 is adjusted by the thread to force the sealing strip 3 to move only along the direction of the third groove 31 (parallel to the side wall of the support member 2), eliminating the risk of lateral displacement. The circumferential array of second grooves 23 at the bottom of the first groove 21 is embedded with the bolt 41 to enhance the structural rigidity of the support member 2 and prevent the sealing strip 3 from being misaligned due to deformation under stress. The two sets of sealing strip 3 side walls The first block 32 and the fourth groove 33 (with the same width) are interlocked to form a continuous sealing surface, which simplifies the assembly process and improves the sealing performance, preventing liquid from seeping in from the joint. The spring 22 continuously compensates for the wear of the sealing strip 3. The sliding fit between the limiting block 42 and the third groove 31 allows the sealing strip 3 to self-adjust axially, adapting to the dynamic deformation when the vacuum roller rotates at high speed and maintaining stable sealing pressure. The modular sealing strip 3 and the limiting part 4 are fixed by bolts 41, eliminating the need for complex installation. The sliding guide design of the limiting block 42 and the third groove 31 ensures that the sealing strip 3 moves only in the set direction, avoiding local wear or sealing failure caused by skew.

[0024] Because the support component 2 adopts an arc-shaped design that matches the roller shell, the spring 22 at the bottom of the first groove 21 provides uniform preload, ensuring the initial pressure of the sealing strip 3 against the roller shell and avoiding manual adjustment errors; the limiting component 4 consists of a bolt 41 and a limiting block 42. The limiting block 42 slides in the third groove 31 of the sealing strip 3. By adjusting the position of the limiting block 42 through the thread, the sealing strip 3 is forced to move only along the direction of the third groove 31 (parallel to the side wall of the support component 2), eliminating the risk of lateral displacement; the circumferential array of the second groove 23 at the bottom of the first groove 21 is embedded with the bolt 41, enhancing the structural rigidity of the support component 2 and preventing the sealing strip 3 from misaligning due to deformation under stress; two sets of sealing strips The first block 32 and the fourth groove 33 (with the same width) are set on the side wall. The "one convex and one concave" interlocking form a continuous sealing surface, which simplifies the assembly steps and improves the sealing performance, preventing liquid from seeping in from the joint. The spring 22 continuously compensates for the wear of the sealing strip 3. The sliding cooperation between the limiting block 42 and the third groove 31 allows the sealing strip 3 to self-adjust axially, adapt to the dynamic deformation when the vacuum roller rotates at high speed, and maintain stable sealing pressure. The modular sealing strip 3 and the limiting part 4 are fixed by bolts 41, without the need for complicated installation. The sliding guide design of the limiting block 42 and the third groove 31 ensures that the sealing strip 3 moves only in the set direction, avoiding local wear or sealing failure caused by skew.

[0025] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0026] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A sealing strip limiting device for a vacuum roller, characterized in that, The device includes a panel (1), a support member (2) disposed on the side of the panel (1), a sealing strip (3), and a limiting member (4) that restricts the movement direction of the sealing strip (3); the support member (2) has a first groove (21); a spring (22) is disposed at the bottom of the first groove (21); the support member (2) is arc-shaped; a plurality of second grooves (23) are disposed on the bottom wall of the first groove (21); a plurality of second grooves (23) are arranged in an array along the bottom circumference of the first groove (21); bolts are embedded in the second grooves (23) for fixing; two sets of sealing strips (3) are arranged opposite each other; a third groove (31) is disposed on the sealing strip (3); the limiting member (4) is threaded through the support member (2) and the limiting member (4) is disposed in the third groove (31); the direction of the third groove (31) is parallel to the side wall of the support member (2).

2. The vacuum roller sealing strip limiting device as described in claim 1, characterized in that, The two sets of sealing strips (3) have a first piece (32) and a fourth groove (33) on their opposite sidewalls; the fourth groove (33) has the same width as the first piece (32); the first piece (32) of one set of sealing strips (3) is embedded in the fourth groove (33) of the other set of sealing strips (3).

3. The vacuum roller sealing strip limiting device as described in claim 2, characterized in that, The limiting member (4) includes a bolt (41) and a limiting block (42) that slides in the third groove (31); the diameter of the limiting block (42) corresponds to the diameter of the third groove (31); the bolt (41) is threaded onto the support member (2) and the bolt (41) passes through the limiting block (42) and the third groove (31).

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