Vacuum roller assembly

Abstract

The utility model discloses a vacuum roller assembly which comprises a roller body, a vacuum cavity is formed in the roller body, a transmission part is fixedly arranged in the vacuum cavity, a bearing is arranged at the position, located on the outer wall of the transmission part, in the roller body, a shaft head is arranged at one end of the bearing, and a limiting disc is fixedly arranged on the outer wall of the roller body. A protective cover is arranged on the outer side of the limiting disc, one end of the bearing penetrates through the middle of the protective cover, a dismounting assembly is arranged on the outer side of the limiting disc and the outer side of the protective cover and comprises a lower fixing sleeve, an upper fixing sleeve and a threaded rod, and a guide rod and a mounting cylinder are arranged at one end of the lower fixing sleeve and one end of the upper fixing sleeve correspondingly; the guide rod and the mounting cylinder are fixedly connected to one end of the upper fixing sleeve and one end of the lower fixing sleeve respectively, the guide rod is rotatably mounted in the mounting cylinder, and one end of the upper fixing sleeve and one end of the lower fixing sleeve are fixedly connected with protruding blocks, so that the vacuum roller can be quickly disassembled and assembled, meanwhile, the mounting and sealing effects of the vacuum roller are improved, and practicability is achieved.

Description

Technical Field

[0001] This utility model relates to the field of papermaking equipment technology, and in particular to a vacuum roller assembly. Background Technology

[0002] Vacuum rolls are widely used in the wire and press sections of paper machines and are core components of the machine. They include vacuum pressure rolls and vacuum couch rolls. A vacuum roll mainly consists of a cylindrical roll body, an internal vacuum chamber, and bearing support devices. The roll body rotates around the vacuum chamber under the support of the bearing support devices. The roll body is densely patterned with extraction holes, extending from the outer surface to the inner surface of the roll body, with a depth typically around 50-100 mm. These extraction holes have a relatively small diameter, generally around 3.0-5.0 mm, and the total open area of ​​the extraction holes generally accounts for about 20-30% of the roll body's surface area. The vacuum chamber inside the roll body is sealed to the inner wall of the roll body by a sealing device (usually a sealing strip). The vacuum chamber is connected to an external vacuum system, and the sealing strip creates negative pressure within the vacuum chamber. This negative pressure is used to draw water from the wire mesh wrapped around the roll body or to absorb paper sheets through the extraction holes on the roll body.

[0003] Existing paper processing equipment often requires vacuum rollers for printing. Prolonged use of vacuum rollers can easily cause internal damage and severe wear. Existing equipment often uses bolts to fix the front cover, which is relatively cumbersome, time-consuming, and labor-intensive, making it inconvenient to maintain the vacuum rollers. To address these issues, an improved and upgraded vacuum roller assembly is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum roller assembly to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] A vacuum roller assembly is designed, including a roller body. A vacuum chamber is formed inside the roller body, and a transmission component is fixedly installed inside the vacuum chamber. A bearing is installed on the outer wall of the transmission component inside the roller body, and a shaft end is provided at one end of the bearing. A limiting plate is fixedly installed on the outer wall of the roller body, and a protective cover is provided on the outer side of the limiting plate. One end of the bearing passes through the middle of the protective cover. A disassembly assembly is provided on the outer side of the limiting plate and the protective cover. The disassembly assembly includes a lower fixing sleeve, an upper fixing sleeve, and a threaded rod. A guide rod and an installation cylinder are respectively provided at one end of the lower fixing sleeve and the upper fixing sleeve.

[0007] Furthermore, the guide rod and the mounting cylinder are respectively fixedly connected to one end of the upper fixing sleeve and the lower fixing sleeve, and the guide rod is rotatably installed inside the mounting cylinder.

[0008] Furthermore, both the upper and lower fixing sleeves are fixedly connected to one end with a protrusion, and both protrusions are fixedly connected to the outer wall with a circular block, and the two circular blocks have slots of the same size inside.

[0009] Furthermore, a knob is provided above one of the protrusions, and a threaded rod is fixedly connected to the bottom of the knob. The outer wall of the threaded rod is threadedly connected to the inside of the two circular blocks.

[0010] Furthermore, a limiting groove is formed inside the limiting plate, and a threaded tube is fixedly provided on the inner wall of the protective cover, with the outer wall of the threaded tube threadedly connected to the inside of the limiting groove.

[0011] Furthermore, a sealing gasket is provided inside the limiting groove, and an adhesive strip is provided on the outer wall of the sealing gasket, with a sealing ring provided on the outer side of the adhesive strip. The sealing gasket and the sealing ring are adapted to the size of the limiting groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model device includes a protective cover, a limiting plate, a sealing gasket, a sealing ring, an upper fixing sleeve, a knob, and a threaded rod. By rotating the knob, the threaded rod disengages from the circular block. Then, the guide rod on the lower fixing sleeve rotates inside the mounting cylinder, causing the two fixing sleeves to rotate out of position and fall off the protective cover. Finally, the threaded tube on the protective cover rotates out from the limiting plate. The sealing gasket and sealing ring facilitate relative sealing when the protective cover and the limiting plate are fastened. This allows for quick assembly and disassembly of the vacuum roller while improving its sealing effect. It also facilitates internal maintenance and avoids problems such as difficulty in operation caused by long-term bolt fixation. The structure is simple.

[0014] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of a vacuum roller assembly according to the present invention;

[0017] Figure 2 This is a schematic diagram of a partially disassembled vacuum roller assembly according to the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the partial split structure;

[0019] Figure 4 for Figure 2 A magnified diagram of the localized decomposed structure.

[0020] In the diagram: 1. Roller body; 2. Protective cover; 21. Threaded tube; 3. Bearing; 4. Shaft head; 5. Disassembly assembly; 51. Lower fixing sleeve; 52. Upper fixing sleeve; 53. Guide rod; 54. Mounting cylinder; 55. Protrusion; 56. Circular block; 57. Knob; 58. Threaded rod; 6. Vacuum chamber; 7. Limiting plate; 71. Sealing gasket; 72. Sealing ring; 73. Adhesive strip; 74. Limiting groove. Detailed Implementation

[0021] 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.

[0022] like Figure 1 - Figure 4 As shown, this embodiment provides a vacuum roller assembly, including a roller body 1. A vacuum chamber 6 is opened inside the roller body 1, and a transmission component is fixedly installed inside the vacuum chamber 6. A bearing 3 is installed inside the roller body 1 on the outer wall of the transmission component, and a shaft head 4 is installed at one end of the bearing 3. A limit plate 7 is fixedly installed on the outer wall of the roller body 1. A protective cover 2 is installed on the outside of the limit plate 7. One end of the bearing 3 passes through the middle of the protective cover 2. A disassembly assembly 5 is installed on the outside of the limit plate 7 and the protective cover 2. The disassembly assembly 5 includes a lower fixing sleeve 51, an upper fixing sleeve 52 and a threaded rod 58. A guide rod 53 and an installation cylinder 54 are respectively installed at one end of the lower fixing sleeve 51 and the upper fixing sleeve 52.

[0023] Preferably, the guide rod 53 and the mounting sleeve 54 are fixedly connected to one end of the upper fixing sleeve 52 and the lower fixing sleeve 51, respectively. The guide rod 53 is rotatably installed inside the mounting sleeve 54. One end of the upper fixing sleeve 52 and the lower fixing sleeve 51 is fixedly connected to a protrusion 55, and the outer wall of each of the two protrusions 55 is fixedly connected to a circular block 56. The two circular blocks 56 have slots of the same size inside. A knob 57 is provided above one of the protrusions 55. A threaded rod 58 is fixedly connected to the bottom of the knob 57. The outer wall of the threaded rod 58 is threaded into the two circular blocks 56, which facilitates the separation of the upper fixing sleeve 52 and the lower fixing sleeve 51.

[0024] Preferably, a limiting groove 74 is provided inside the limiting plate 7, and a threaded tube 21 is fixedly provided on the inner wall of the protective cover 2. The outer wall of the threaded tube 21 is threadedly connected to the inside of the limiting groove 74. A sealing gasket 71 is provided inside the limiting groove 74, and an adhesive strip 73 is provided on the outer wall of the sealing gasket 71. A sealing ring 72 is provided on the outer side of the adhesive strip 73. The sealing gasket 71 and the sealing ring 72 are adapted to the size of the limiting groove 74, so that the protective cover 2 and the limiting plate 7 can fit together tightly.

[0025] The working principle and process of this utility model are as follows: When the vacuum roller is damaged and worn after long-term use, the operator first manually rotates the knob 57 to drive the threaded rod 58 to rotate and displace the circular block 56 on the lower fixed sleeve 51, so that the two protrusions 55 are separated. Then, the guide rod 53 on the lower fixed sleeve 51 is rotated inside the mounting cylinder 54 on the upper fixed sleeve 52 to separate the fixed sleeve from the protective cover 2. At this time, the protective cover 2 is rotated and displaced from the limiting groove 74 in the limiting plate 7 through the threaded tube 21. At the same time, a sealing gasket 71 and a sealing ring 72 are provided in the limiting groove 74 to facilitate a relative seal when the protective cover 2 is connected. The protective cover 2 can be quickly disassembled to facilitate the operator's internal maintenance. Conversely, it is easy to install and operate.

Claims

1. A vacuum roll assembly characterized by, The utility model provides a kind of vacuum roller, including roller body (1), the vacuum chamber (6) is opened inside the roller body (1) and is fixedly arranged with transmission component inside the vacuum chamber (6), bearing (3) is arranged in transmission component outer wall inside the roller body (1) and the shaft head (4) is arranged in one end of bearing (3), limiting disc (7) is fixedly arranged in the outer wall of roller body (1), protective cover (2) is arranged outside limiting disc (7), one end of bearing (3) penetrates the middle part of protective cover (2), dismounting assembly (5) is arranged outside limiting disc (7) and protective cover (2), the dismounting assembly (5) includes lower fixed sleeve (51), upper fixed sleeve (52) and threaded rod (58), lower fixed sleeve (51) and upper fixed sleeve (52) one end is respectively provided with guide rod (53) and installation cylinder (54).

2. A vacuum roll assembly according to claim 1, wherein, The guide rod (53) and installation cylinder (54) are fixedly connected on one end of upper fixed sleeve (52) and lower fixed sleeve (51) respectively, the guide rod (53) is rotatably installed in the installation cylinder (54).

3. A vacuum roll assembly according to claim 2, wherein, The upper fixed sleeve (52) and the lower fixed sleeve (51) are fixedly connected with the lug (55) on one end, and the outer wall of the two lugs (55) is fixedly connected with the circular block (56), and the same size notch is opened in the two circular blocks (56).

4. A vacuum roll assembly according to claim 3, wherein, The lug (55) is provided with a knob (57) above, the knob (57) is fixedly connected with a threaded rod (58) at the bottom, and the threaded rod (58) is screw-connected in the two circular blocks (56).

5. A vacuum roll assembly as claimed in claim 1, wherein, The limiting disc (7) is provided with a limiting groove (74) inside, the protective cover (2) is provided with a threaded tube (21) on the inner wall, and the threaded tube (21) is screw-connected in the limiting groove (74).

6. A vacuum roll assembly according to claim 5, wherein, The limiting groove (74) is provided with a sealing gasket (71) inside, the sealing gasket (71) is provided with a sticking strip (73) on the outer wall, and the sticking strip (73) is provided with a sealing ring (72) on the outer side, and the sealing gasket (71) and the sealing ring (72) are matched with the size of the limiting groove (74).

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