A new type sealing device for vacuum roll vacuum box

Abstract

This utility model discloses a novel sealing device for a vacuum roll vacuum box, belonging to the field of papermaking technology. It includes a vacuum box body, a vacuum roll body mounted on the vacuum box body, and a strip-shaped hole on the vacuum box body. A first sealing structure is provided on the vacuum box body, and a second sealing structure is provided within the strip-shaped hole. By setting the first and second sealing structures, the sealing structure has an elastic compensation effect, avoiding excessive resistance and increased energy consumption due to excessive contact. Simultaneously, it can still maintain contact with the vacuum roll body to form a good seal even after wear on the T-shaped sealing strip and the end sealing block. The movable rod at the lower end of the end sealing block is inserted into a circular hole; replacement only requires replacing the end sealing block, making the operation convenient and quick. The T-shaped groove acts as a limiting and blocking element for the T-shaped sealing strip, forming a critical contact and preventing excessive wear.

Description

Technical Field

[0001] This utility model relates to the field of papermaking technology, and in particular to a novel sealing device for a vacuum roll vacuum box. Background Technology

[0002] Vacuum rollers and vacuum boxes are important components in the papermaking process. The negative pressure of the vacuum rollers and vacuum boxes is used to dewater and press the paper. A sealing device is installed at the gap between the vacuum rollers and the vacuum box to ensure airtightness, guarantee the negative pressure effect, and thus guarantee the pressing effect.

[0003] In existing vacuum roller vacuum box sealing devices, a sealing strip is used as the sealing component, installed on the vacuum box. The sealing strip contacts the outer surface of the vacuum roller to achieve a seal. However, in existing vacuum roller vacuum box sealing devices, the sealing strip is fixed in position after installation without elastic compensation. The rotation of the vacuum roller causes wear on the sealing strip. After prolonged use, significant wear on the sealing strip will affect the sealing effect. Furthermore, to ensure a seal, the sealing strip initially generates significant frictional resistance against the vacuum roller, which in turn affects the normal operation of the vacuum roller and increases energy consumption. Utility Model Content

[0004] The main objective of this invention is to provide a novel sealing device for a vacuum roller vacuum box, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A novel sealing device for a vacuum roller vacuum box includes a vacuum box body, a vacuum roller body on the vacuum box body, and a strip-shaped hole on the vacuum box body. A first sealing structure is provided on the vacuum box body, and a second sealing structure is provided in the strip-shaped hole on the vacuum box body.

[0007] Preferably, the vacuum box body is provided with a support base, and the vacuum roller body has rotating shafts at both ends, and the rotating shafts are connected to the support base.

[0008] Preferably, two sets of the first sealing structures are symmetrically arranged on the vacuum box body, and the first sealing structure is in contact with the outer surface of the vacuum roller body. Two sets of the second sealing structures are arranged at the end positions of the vacuum roller body, and the second sealing structure is in contact with the first sealing structure.

[0009] Preferably, the first sealing structure includes a mounting base, a mounting plate, a U-shaped hole, a T-shaped groove, a T-shaped sealing strip, a connecting block, a circular groove, and a retaining spring. The mounting base is fixedly connected to the mounting plate. The U-shaped hole is formed on the mounting plate. The T-shaped groove is provided on the mounting base. The circular groove is formed on the T-shaped sealing strip, and the T-shaped sealing strip is located in the T-shaped groove on the mounting base. The connecting block is fixed in the T-shaped groove on the mounting base, and the connecting block is connected to the retaining spring. The end of the retaining spring is provided in the circular groove on the T-shaped sealing strip.

[0010] Preferably, the second sealing structure includes a fixed block, a circular hole, an end sealing block, an arc-shaped groove, a movable rod, and a support spring. The circular hole is formed on the fixed block, and the fixed block is installed inside the vacuum chamber body. The arc-shaped groove is formed on the end sealing block, and the end sealing block is fixedly connected to the movable rod. The lower end of the movable rod is inserted into the circular hole. The support spring is sleeved on the movable rod and is located between the fixed block and the end sealing block.

[0011] Compared with the prior art, this utility model has the following beneficial effects: This novel sealing device for vacuum roller vacuum box, by setting a first sealing structure and a second sealing structure, respectively using a contact spring and a support spring, enables the sealing structure to have an elastic compensation effect, avoiding excessive resistance due to excessive contact and thus increasing energy consumption. At the same time, it can still contact the vacuum roller body to form a good seal even after the T-shaped sealing strip and the end sealing block are worn, ensuring the sealing performance. A U-shaped hole is opened on the mounting plate, which can be adjusted during installation to ensure installation accuracy. The movable rod at the lower end of the end sealing block is inserted into the round hole, so only the end sealing block needs to be replaced when replacing it, which is convenient and quick. The T-shaped groove forms a limiting and blocking effect on the T-shaped sealing strip, which can form a critical contact, avoiding excessive wear, while maintaining the sealing performance. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the main body of the vacuum chamber of this utility model;

[0014] Figure 3 This is a schematic diagram of the first sealing structure of this utility model;

[0015] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0016] Figure 5 This is a schematic diagram of the second sealing structure of this utility model.

[0017] In the diagram: 1. Vacuum box body; 2. Vacuum roller body; 3. Strip hole; 4. First sealing structure; 401. Mounting base; 402. Mounting plate; 403. U-shaped hole; 404. T-slot; 405. T-seal strip; 406. Connecting block; 407. Circular groove; 408. Abutment spring; 5. Second sealing structure; 501. Fixing block; 502. Circular hole; 503. End sealing block; 504. Arc groove; 505. Movable rod; 506. Support spring; 6. Support base. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-5 As shown, a novel sealing device for a vacuum roller vacuum box includes a vacuum box body 1, a vacuum roller body 2 mounted on the vacuum box body 1, and a strip-shaped hole 3 on the vacuum box body 1. A first sealing structure 4 is provided on the vacuum box body 1, and a second sealing structure 5 is provided within the strip-shaped hole 3 on the vacuum box body 1. A support base 6 is provided on the vacuum box body 1, and rotating shafts are provided at both ends of the vacuum roller body 2, with the rotating shafts connected to the support base 6. Two sets of first sealing structures 4 are symmetrically arranged on the vacuum box body 1, and the first sealing structures 4 are in contact with the outer surface of the vacuum roller body 2. Two sets of second sealing structures 5 are located at the end positions of the vacuum roller body 2, and the second sealing structures 5 are in contact with the first sealing structures 4.

[0020] During paper pressing and dewatering, the first sealing structure 4 and the second sealing structure 5 are installed on the vacuum box body 1. The sealing structure contacts the vacuum roller body 2 on the support seat 6 to form a sealing effect. When the paper passes through, a negative pressure is generated inside the vacuum box body 1. The negative pressure acts on the vacuum roller body 2, thereby dewatering the paper. Since the first sealing structure 4, the second sealing structure 5 and the vacuum roller body 2 are in elastic contact, there is elastic compensation, which can ensure the sealing effect and prevent excessive resistance from affecting normal use.

[0021] According to the above implementation scheme, the first sealing structure 4 includes a mounting base 401, a mounting plate 402, a U-shaped hole 403, a T-shaped groove 404, a T-shaped sealing strip 405, a connecting block 406, a circular groove 407, and a retaining spring 408. The mounting base 401 is fixedly connected to the mounting plate 402. The U-shaped hole 403 is opened on the mounting plate 402. The T-shaped groove 404 is provided on the mounting base 401. The circular groove 407 is opened on the T-shaped sealing strip 405, and the T-shaped sealing strip 405 is located in the T-shaped groove 404 on the mounting base 401. The connecting block 406 is fixed in the T-shaped groove 404 on the mounting base 401, and the connecting block 406 is connected to the retaining spring 408. The end of the retaining spring 408 is provided in the circular groove 407 on the T-shaped sealing strip 405.

[0022] The second sealing structure 5 includes a fixed block 501, a circular hole 502, an end sealing block 503, an arc-shaped groove 504, a movable rod 505, and a support spring 506. The circular hole 502 is formed on the fixed block 501, and the fixed block 501 is installed inside the vacuum chamber body 1. The arc-shaped groove 504 is formed on the end sealing block 503, and the end sealing block 503 is fixedly connected to the movable rod 505. The lower end of the movable rod 505 is inserted into the circular hole 502. The support spring 506 is sleeved on the movable rod 505, and the support spring 506 is located between the fixed block 501 and the end sealing block 503.

[0023] When installing the sealing structure, the fixing block 501 in the second sealing structure 5 is set in the strip hole 3, and the supporting spring 506 is sleeved on the movable rod 505 at the lower end of the end sealing block 503 and connected to the round hole 502. The end sealing block 503 contacts the vacuum roller body 2 through the arc groove 504. The mounting seat 401 in the first sealing structure 4 is set on the upper end of the vacuum box body 1. The screw is installed through the U-shaped hole 403 on the mounting plate 402, so that the T-shaped sealing strip 405 elastically abuts against the vacuum roller body 2, and at the same time, the end of the T-shaped sealing strip 405 contacts the end sealing block 503 to form an effective seal. During operation, the vacuum roller body 2 rotates. Due to the action of the connecting block 406 and the spring 408 at the groove 407, the T-shaped sealing strip 405 is in close contact with the vacuum roller body 2, and the end sealing block 503 is also in close contact with the vacuum roller body 2 under the action of the supporting spring 506, ensuring a sealing effect. Furthermore, even after wear occurs, the corresponding springs ensure that the T-shaped sealing strip 405 and the end sealing block 503 remain in contact with the vacuum roller body 2, maintaining sealing effectiveness. As wear increases, the T-shaped sealing strip 405 moves within the T-groove 404. Eventually, the larger end of the T-shaped sealing strip 405 contacts the inner wall of the T-groove 404, creating a critical sealing effect and preventing excessive wear.

[0024] It should be noted that by setting the first sealing structure 4 and the second sealing structure 5, and using the abutment spring 408 and the support spring 506 respectively, the sealing structure has the effect of elastic compensation, avoiding excessive resistance due to excessive contact and thus increasing energy consumption. At the same time, it can still contact the vacuum roller body 2 to form a good seal even after the T-shaped sealing strip 405 and the end sealing block 503 are worn, ensuring the sealing performance. A U-shaped hole 403 is opened on the mounting plate 402, which can be adjusted in position during installation to ensure installation accuracy. The movable rod 505 at the lower end of the end sealing block 503 is inserted into the round hole 502. When replacing, only the end sealing block 503 needs to be replaced, which is convenient and quick. The T-shaped groove 404 forms a limiting and blocking effect on the T-shaped sealing strip 405, which can form a critical contact to avoid excessive wear while maintaining the sealing performance.

[0025] The foregoing describes the working principle, features, and beneficial effects of this utility model. Those skilled in the art will understand from the foregoing that it does not limit the utility model. The embodiments and description above illustrate the basic principles and features of this utility model. Various changes and improvements can be made to this utility model while remaining consistent with its concept, and all such improvements should fall within the scope of protection claimed by this utility model.

Claims

1. A novel sealing device for a vacuum roll vacuum box, comprising a vacuum box body (1), wherein a vacuum roll body (2) is arranged on the vacuum box body (1), and a strip-shaped hole (3) is arranged on the vacuum box body (1), characterized in that: The vacuum chamber body (1) is provided with a first sealing structure (4), and the vacuum chamber body (1) is provided with a second sealing structure (5) in the strip hole (3).

2. A novel sealing device for a vacuum roll vacuum box according to claim 1, characterized in that: The vacuum box body (1) is provided with a support base (6), and the vacuum roller body (2) has rotating shafts at both ends, and the rotating shafts are connected to the support base (6).

3. A novel sealing device for a vacuum roll vacuum box according to claim 2, characterized in that: Two sets of the first sealing structures (4) are symmetrically arranged on the vacuum box body (1), and the first sealing structure (4) is in contact with the outer surface of the vacuum roller body (2). Two sets of the second sealing structures (5) are arranged at the end position of the vacuum roller body (2), and the second sealing structure (5) is in contact with the first sealing structure (4).

4. A novel sealing device for a vacuum roller vacuum box according to claim 3, characterized in that: The first sealing structure (4) includes a mounting base (401), a mounting plate (402), a U-shaped hole (403), a T-shaped groove (404), a T-shaped sealing strip (405), a connecting block (406), a circular groove (407), and a contact spring (408). The mounting base (401) is fixedly connected to the mounting plate (402). The U-shaped hole (403) is formed on the mounting plate (402), and the T-shaped groove (404) is provided on the mounting base (401). On the T-shaped sealing strip (405), the circular groove (407) is opened on the T-shaped sealing strip (405), and the T-shaped sealing strip (405) is located in the T-shaped groove (404) on the mounting base (401). The connecting block (406) is fixed in the T-shaped groove (404) on the mounting base (401), and the connecting block (406) is connected to the abutment spring (408). The end of the abutment spring (408) is set in the circular groove (407) on the T-shaped sealing strip (405).

5. A novel sealing device for a vacuum roller vacuum box according to claim 4, characterized in that: The second sealing structure (5) includes a fixed block (501), a round hole (502), an end sealing block (503), an arc groove (504), a movable rod (505), and a support spring (506). The round hole (502) is opened on the fixed block (501), and the fixed block (501) is installed inside the vacuum chamber body (1). The arc groove (504) is opened on the end sealing block (503), and the end sealing block (503) is fixedly connected to the movable rod (505). The lower end of the movable rod (505) is inserted into the round hole (502). The support spring (506) is sleeved on the movable rod (505), and the support spring (506) is located between the fixed block (501) and the end sealing block (503).

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