KR930007864B1 - Dry cylinder for paper making machine - Google Patents

Abstract

Spoiler bars are fixed at regular intervals on the inner drier sylinder surface by expansion rings. expansion rings are placed on the inner side of the spoiler bars with outward elastic force.

Description

Dryer Cylinder for Paper Machine

1 is a schematic configuration diagram of a state in which a spoiler bar is applied to an inner surface of a dryer cylinder of the present invention.

2 is a detailed view of portion A of FIG.

3 is a schematic diagram illustrating a partial extract of the main portion of the present invention.

4 is a longitudinal sectional view of a dryer cylinder of the present invention.

* Explanation of symbols for main parts of the drawings

1: Dryer Cylinder (DRYER CYLINDER) Body

2: DRYER CYLINDER SHELL

3: expansion ring

4: Spoiler Bar (SPOILER BAR)

5: Set Screw 6: Plate Spring Washer

7,7 ': Flange 8: Cutting groove

9: spiral hole 10: insertion hole

11: Wire for preventing loosening (WIRE) 12: SYPRON PIPE

The present invention relates to a dryer cylinder for a paper machine (DRYER CYLINDER), in particular, a plurality of spoiler bar (SPOILER BAR) is installed at the inner surface of the dryer cylinder cell (DRYER CYLINDER SHELL) at an equal interval in the axial direction divided into many equal parts A paper machine which allows the spoiler bar to be firmly installed on the inner side of the dryer cylinder cell by fastening the flanges on both sides of each expansion ring with fixing screws so that the expansion ring is blown outward from the inside of the dryer cylinder cell. It relates to a dryer cylinder for.

In general, as a means for drying grass paper in a high-speed initial equipment line, the heat transfer efficiency is increased by converting the condensate film state into a turbulent state, but the water is always kept in the dryer cylinder due to condensation due to the convection of steam. Due to this phenomenon, the drying capacity of the grass paper was reduced due to this phenomenon. In the past, a plurality of magnetic bars were installed on the inner surface of the dryer cylinder cell at predetermined equal intervals to distribute the condensed water to improve the drying capacity. come.

That is, the magnetic bar is axially installed on the inner surface of the dryer cylinder cell at predetermined intervals to spread the condensed water remaining on the inner surface of the dryer cylinder evenly so that the water film is formed on the inner surface of the dryer cylinder cell and the surface temperature of the dryer cylinder is maintained at a constant temperature. By doing so, it was possible to improve the drying capacity of grassland.

However, as the price of the magnetic bar is high, the manufacturing cost increases, and the magnetic bar is significantly weakened due to moisture and moisture when used for a long period of time, and the air is removed from the inner wall of the dryer cylinder cell. As a result of the loss of not only can not maintain a constant water film form on the inner surface of the dryer cylinder, but also reduced the drying capacity of the paper, as well as impaired the siphon pipe (SYPHON PIPE) due to the impact during the fall contained a number of problems.

Therefore, in the present invention for completely eliminating such a conventional defect, by installing a spoiler bar on the inner surface of the dryer cylinder cell, it is divided into a plurality of equal parts and by the expansion ring composed of combinations to have an outward elasticity, the spoiler bar to close, fixed by semi-permanent It is to provide a dryer cylinder for the papermaking machine that can maintain the phosphorus life, and improve the moisture profile of the papermaking to improve the drying capacity, as described in detail below with reference to the accompanying drawings.

1 is a schematic configuration diagram in which a spoiler bar is applied to an inner surface of a dryer cylinder of the present invention, FIG. 2 is a detailed view of part A of FIG. 1, and FIG. 3 is a partial excerpt of the main part of the present invention. One coupling configuration, FIG. 4 is a longitudinal cross-sectional view of the dryer cylinder of the present invention. (SPOILER BAR) (4) is provided in the axial direction at predetermined equal intervals, each of the expansion ring (5) formed by processing the inner surface of the dryer cylinder cell (2) uniformly and divided into four equal parts in the longitudinal direction.

At this time, the inlet groove 8 is formed at the lower end of the expansion ring 3 divided into four parts, thereby inserting the uneven portion of the spoiler bar 4, and the spiral hole 9 at one flange 7 of each expansion ring 3. The other flange 7 ', which is opposite thereto, drills an insertion hole 10 to interpose a plate spring washer 6 between both flanges 7 and 7' and a small diameter portion 5 'at the tip. Tighten with a set screw (5).

At this time, each of the flanges (7) (7 ') is elasticized by the dish spring washer (6), after all, the spoiler bar (4) is firmly adhered to the inner surface of the dryer cylinder cell (2), in the process The spring washer 6 serves to prevent loosening due to vibration during rotation of the dryer cylinder body 1.

In the figure, reference numeral 11 denotes an anti-loosening wire, and 12 denotes a siphon wipe.

According to the present invention as described above, the papermaking paper passing through the surface of the dryer slender body (1) is dried by the heat of steam inside the dryer cylinder cell (2) during the flow of steam into and out of the dryer cylinder cell (1). Inba, at this time, the four spherical expansion rings (3) (3 ') (3 ") (3"') outwardly shot, and a plurality of spoiler bars (4) at equal intervals on the inner circumferential wall (5) The spoiler bar 4 is firmly attached to the inner circumferential wall of the dryer cylinder cell 2 even when the dryer cylinder body 1 is rotated by tightly tightening and tightening the plate spring washer 6 so that the dryer cylinder cell ( 2) Spoiler bar (4) evenly spreads the remaining condensate on the inner surface of the water film is formed to maintain a constant surface temperature of the dryer cylinder body (1) to improve the drying capacity of the paper, spoiler4 is be securely attached to the circumferential wall within the dryer cylinder cell (2) is available permanently.

The present invention having the characteristics as described above maintains a semi-permanent life as it is not easily removed from the inner wall of the dryer cylinder cell by simply and firmly attaching and installing a plurality of spoiler bars on the inner wall of the dryer cylinder cell using a multiplied expansion ring. It is possible to provide a dryer cylinder for paper machine which can show the excellent drying ability of papermaking and also reduce the cost.

Claims (1)

In constructing the dryer cylinder for the papermaking machine, the spoiler bar 4 is arranged on the inner wall of the dryer cylinder cell 1 of the cylindrical dryer cylinder body 1 at predetermined equal intervals. It is installed in the axial direction, but the incision groove (8) is formed in the bottom surface of the expansion part (Expansion Ring) (3) formed in the inner part of it, and the flanges (7) (7 ') are integrally formed at both ends. However, the flange (7) is a spiral hole (9), the flange (7 ') to drill a small diameter insertion hole 10 to fasten it with a fixing screw (5) having a small diameter portion (5') On the other hand, between the flange (7) (7 ') through the plate spring washer (6) through each of the expansion ring is characterized in that the configuration of the dryer cylinder for paper machine.

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