CN214362533U

CN214362533U - Compression roller device for papermaking machinery

Info

Publication number: CN214362533U
Application number: CN202120402116.3U
Authority: CN
Inventors: 李文斌
Original assignee: Guangdong Lee and Man Paper Manufacturing Co Ltd
Current assignee: Guangdong Lee and Man Paper Manufacturing Co Ltd
Priority date: 2021-02-23
Filing date: 2021-02-23
Publication date: 2021-10-08
Anticipated expiration: 2031-02-23

Abstract

The utility model provides a compression roller device that papermaking equipment used belongs to paper manufacturing technical field. Through waiting that the paper of dehydration passes through upper compression roller and ditch face extrusion dehydration, in the flowing water entering slot after the extrusion, through the high-speed rotation of lower compression roller, the flowing water is thrown away along the slot wall. The water retention area of the lower roll surface can be increased, and more water can be taken out by the lower roll in the rotating process. The dewatering capacity of the wet paper is enhanced, the dryness of the paper surface is improved, the drying steam consumption is less, and the paper is more environment-friendly.

Description

Compression roller device for papermaking machinery

Technical Field

The utility model relates to a belong to paper manufacturing technical field, concretely relates to compression roller device that papermaking equipment used.

Background

The papermaking industry is a large energy-consuming household, steam consumption is one of resource consumption, resource saving is the requirement for building a resource-saving environment-friendly society, how to reduce resource waste is also an examination faced by the papermaking industry, and along with the improvement of environmental awareness of people, energy conservation and emission reduction are also the basis of sustainable development of the papermaking industry.

In order to dry paper, squeezing dewatering and drying dewatering are carried out, theoretically, when the water content of a paper web output pressing portion is reduced by 1%, drying steam is saved by 5%, water output from the pressing portion can often return to a paper surface again to cause rewetting, steam consumption is high, and the paper surface dewatering efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that a compression roller device for papermaking equipment is provided reduces the rewetting condition of paper, strengthens wet paper dewatering capacity, improves the dryness fraction of paper, and then the dewatering efficiency of paper is high, and it is few to consume vapour, and environmental protection more uses very portably, swiftly and laborsaving.

The technical scheme of the utility model is realized like this:

the utility model provides a compression roller device for papermaking machinery, which comprises an upper compression roller and a lower compression roller; the roller surface of the upper pressing roller is contacted with the lower pressing roller; a plurality of narrow grooves and a plurality of convex edges are distributed on the outer surface of the lower pressing roller; a plurality of narrow grooves and a plurality of beads are arranged alternately, the outer surface of each bead is a wide hook surface, and the width of each wide hook surface is larger than that of each narrow groove.

Furthermore, the width of the wide hook surface is more than or equal to the width of the narrow groove.

Further, the ribs are configured as rectangular ribs; or the narrow groove is configured as a rectangular groove.

Further, the device comprises a first conveyor belt and a second conveyor belt which are used for conveying paper; one surface of the first conveyor belt is in contact with the outer surface of the upper press roller; the other surface of the first conveyor belt is connected with one surface of the paper surface; one surface of the second conveyor belt is in contact with the outer surface of the lower pressing roller; the other side of the second conveyor belt is connected to the other side of the sheet.

Further, the device comprises a first roller group; one end of the first roller group is connected with one end of the first conveyor belt; the other end of the first roller group is connected with the other end of the first conveyor belt.

Further, a second roller group; one end of the second roller group is connected with one end of the second conveyor belt; the other end of the second roller group is connected with the other end of the second conveyor belt.

Further, the first roller group rotates anticlockwise.

Further, the second roller group rotates clockwise.

Further, the upper press roll and the lower press roll are both provided with high-performance polyurethane covering layers.

The utility model has the advantages that: the utility model provides a compression roller device for papermaking machinery, through the paper surface to be dehydrated through the upper compression roller and the groove surface extrusion dehydration, the extruded flowing water enters into the groove, and through the high-speed rotation of the lower compression roller, the flowing water is thrown out along the groove wall; the residual water flow of the grooves and the groove surfaces after one rotation is less, so that the moisture return condition of the facial tissue is less and the degree is light, the dryness of the facial tissue is improved, and the steam required for drying is less.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of a press roll device for a papermaking machine according to the present invention;

fig. 2 is an enlarged view of a portion a of the compression roller device for a papermaking machine of the present invention.

The attached drawings are as follows: 1. an upper compression roller; 2. a lower pressing roller; 3. a paper surface; 21. a narrow trench; 22. a rib; 221. wide groove surfaces; 4. a cover layer; 5. a first conveyor belt; 6. a second conveyor belt; 7. a first roller train; 8. a second roller set.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1, a roll apparatus for a papermaking machine includes an upper roll 1 and a lower roll 2; the roll surface of the upper press roll 1 is contacted with the lower press roll 2; a plurality of narrow grooves 21 and a plurality of ribs 22 are distributed on the outer surface of the lower press roll 2; the narrow grooves 21 and the convex ribs 22 are arranged alternately, the outer surface of each convex rib 22 is a wide hook surface 221, and the width of each wide hook surface 221 is larger than that of each narrow groove 21. The paper surface 3 to be dewatered is pressed and dewatered by the upper press roll 1 and the wide groove surface 221. The paper surface 3 to be dehydrated is extruded and dehydrated through the upper press roll 1 and the wide groove surface 221, the extruded running water enters the narrow groove 21, and the running water is thrown out along the wall of the narrow groove 21 through the high-speed rotation of the lower press roll 2. The water retention area of the lower roll surface can be increased, so that more water can be taken out by the lower roll 2 in the rotating process.

In order to protect the paper surface 3 to be dehydrated from being damaged by pulling and drive the paper surface 3 to be dehydrated by extrusion, the paper surface dehydrating device comprises a first conveyor belt 5 and a second conveyor belt 6 which are used for conveying the paper surface 3; one surface of the first conveyor belt 5 is in contact with the outer surface of the upper press roller 1; the other surface of the first conveyor belt 5 is connected with one surface of the paper surface 3; one side of the second conveyor belt 6 is in contact with the outer surface of the lower pressure roller 2; the other side of the second conveyor belt 6 is connected to the other side of the sheet 3. The device also comprises a first roller group 7 and a second roller group 8; one end of the first roller group 7 is connected with one end of the first conveyor belt 5; the other end of the first roller group 7 is connected with the other end of the first conveyor belt 5; one end of the second roller group 8 is connected with one end of the second conveyor belt 6; the other end of the second roller group 8 is connected with the other end of the second conveyor belt 6. The first roller group 7 rotates counterclockwise. The second roller group 8 rotates clockwise. The operation of the first conveyor 5 and the second conveyor 6 can be controlled.

In order to allow the water to enter the narrow groove 21 and be thrown out only when reaching a certain inclination angle, the narrow groove 21 extends in the axial direction of the bottom roll 2.

In order to enable the flowing water to be thrown out according to a specified flowing track and not to bounce to the paper surface 3 to be dehydrated, the flowing water extruded by the paper surface 3 to be dehydrated through the upper press roll 1 and the wide groove surface 221 flows into the narrow groove 21 along the wide groove surface 221; the rotation of the lower press roll 2 drives the narrow groove 21 and the running water to rotate, and the running water after the rotation is thrown out along the side wall of the narrow groove 21.

In order to keep the deformation between the wide groove surface 221 and the narrow groove 21 low, the width of the wide hook surface 221 is not less than 3 times the width of the narrow groove 21. The width of the narrow groove 21 of the lower roll surface is 0.8-0.9 mm, the width of the wide groove 221 is 2.5-2.7 mm, and the depth of the narrow groove 21 is 2.4-2.6 mm, so that the wide groove 221 cannot be completely extruded and deformed when the lower roll 2 is pressed, and the narrow groove 21 is further extruded and sealed by the two wide groove surfaces 221. The narrow grooves 21 are easy to absorb moisture, so that the dewatering performance of the compression roller is improved; the wider wide groove surface 221 facilitates greater pressure. The ribs 22 are configured as rectangular ribs; or the narrow groove 21 is configured as a rectangular groove.

In order to increase the compression resistance, the upper press roll 1 and the lower press roll 2 are both provided with a covering layer 4 made of high-performance polyurethane, and the hardness of the high-performance polyurethane material is 12 +/-3P & J, and meanwhile, the high-performance polyurethane material has certain compressibility and can keep low deformation.

Along with the high-speed rotation of the lower press roll, water is thrown out, and the dewatering efficiency is improved. The dryness of the paper surface 3 after squeezing can be effectively improved, the consumption of drying steam can be reduced, and the compression deformation dewatering paper can be produced.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A compression roller device for a papermaking machine, characterized in that:

comprises an upper press roll (1) and a lower press roll (2);

the roll surface of the upper press roll (1) is in contact with the lower press roll (2);

a plurality of narrow grooves (21) and a plurality of ribs (22) are distributed on the outer surface of the lower pressing roll (2);

the narrow grooves (21) and the ribs (22) are arranged alternately, the outer surface of each rib (22) is a wide hook surface (221), and the width of each wide hook surface (221) is larger than that of each narrow groove (21).

2. A roll apparatus for a papermaking machine according to claim 1, characterized in that:

the width of the wide hook surface (221) is more than or equal to 3 times of the width of the narrow groove (21).

3. A roll apparatus for a papermaking machine according to claim 1, characterized in that:

the ribs (22) are configured as rectangular ribs; or the narrow groove (21) is configured as a rectangular groove.

4. A roll apparatus for a papermaking machine according to claim 1, characterized in that:

comprises a first conveyor belt (5) and a second conveyor belt (6) for conveying paper (3);

one surface of the first conveyor belt (5) is in contact with the outer surface of the upper press roller (1);

the other surface of the first conveyor belt (5) is connected with one surface of the paper surface (3);

one surface of the second conveyor belt (6) is in contact with the outer surface of the lower pressing roller (2);

the other surface of the second conveyor belt (6) is connected with the other surface of the paper surface (3).

5. A roll arrangement for a papermaking machine according to claim 4, characterized in that:

comprises a first roller group (7);

one end of the first roller group (7) is connected with one end of the first conveyor belt (5);

the other end of the first roller group (7) is connected with the other end of the first conveyor belt (5).

6. A roll arrangement for a papermaking machine according to claim 4, characterized in that:

a second roller group (8); one end of the second roller group (8) is connected with one end of the second conveyor belt (6);

the other end of the second roller group (8) is connected with the other end of the second conveyor belt (6).

7. A roll arrangement for a papermaking machine according to claim 5, characterized in that:

the first roller group (7) rotates anticlockwise.

8. A roll apparatus for a papermaking machine according to claim 6, characterized in that:

and the second roller group (8) rotates clockwise.

9. A roll apparatus for a papermaking machine according to any one of claims 1 to 3, characterized in that:

and the upper pressing roller (1) and the lower pressing roller (2) are both provided with a covering layer (4) made of high-performance polyurethane.