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Method for producing a yankee dryer

A cylinder shell and site technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, paper making, etc., can solve the problems of no way to transport parts to customers, consume too much effort and cost, etc.

Active Publication Date: 2019-07-26
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] With this traditional manufacturing technique, it is impossible to supply many potential customers with cylinders larger than 6.5 meters in diameter and 6 meters in width, because there is usually no way to transport such large and heavy components to customers, or because such Shipping will take too much effort and expense

Method used

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  • Method for producing a yankee dryer
  • Method for producing a yankee dryer
  • Method for producing a yankee dryer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] figure 1 The Yankee cylinder 1 is shown. The Yankee cylinder 1 includes a cylindrical steel casing 2 which is welded or bolted to two end covers 3 and 4.

[0050] Inside the Yankee cylinder 1, there are a central shaft 7 having a central portion 21 and two bearing shafts 20, and the two bearing shafts 20 rotate in the bearings 17.

[0051] During operation, steam is supplied to the Yankee cylinder 1 through the steam feed 18. Waste steam and condensed water are discharged from the Yankee cylinder through condensate pipes 22 and 19, respectively.

[0052] There are a large number of grooves 11 on the inside 15 of the cylinder barrel, and the grooves 11 extend in the circumferential direction of the Yankee cylinder 1. Through the groove 11, the heat transfer to the outside 16 of the cylinder barrel is enhanced, and the removal of condensed water is facilitated.

[0053] In the manufacturing methods used in the prior art so far, individual shell plates are cut, crimped and welde...

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PUM

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Abstract

The invention relates to a method for producing a yankee cylinder (1) from steel, said yankee cylinder (1) consisting of individual pre-fabricated or finished cylinder sections (8, 9, 10) that are welded together. The invention also relates to a yankee cylinder (1) that has been produced by the production method according to the invention.

Description

[0001] Instructions for Divisional Application [0002] This application is a PCT invention with the international filing date of March 19, 2012, the date of entering the Chinese national phase on September 20, 2013, the national application number of 201280014492.9 and the title of the invention as "Method for Manufacturing Yankee Cylinder" Divisional application of patent application. Technical field [0003] The subject of the present invention is a method of manufacturing a steel Yankee cylinder. Background technique [0004] The so-called Yankee cylinder is usually used for the drying process in the production of roll paper or tissue paper. Here, the damp web is transferred from the machine cover to the rotating Yankee cylinder; it dries on the surface of the cylinder in an instant, and then is removed from the cylinder with the help of a scraper. [0005] Yankee cylinders usually have a very large diameter. They use steam to heat from the inside and are difficult to manufactu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/00B23P23/04
CPCD21F5/021D21F5/181B23K37/08Y10T29/49393B23K37/02
Inventor 约瑟夫·克拉塞尔马库斯·迈尔路德维希·卡瑟夫斯基鲁珀特·施密特霍费尔
Owner ANDRITZ AG
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