A method for online replacement of the shaft head of a drying cylinder in a paper mill

Abstract

The invention discloses an online replacement method for a drying cylinder shaft head of a paper mill. According to the method, in a drying part of a papermaking production line, unit brackets and cross rollers are adopted for erecting an assembled bracket through a direct cup joint mode, and a lifting device is placed on the assembled bracket. By means of the method, the drying cylinder shaft head of a drying cylinder can be directly replaced on the drying part of the papermaking production line; the unit brackets and the cross rollers are adopted for erecting the assembled bracket through the direct cup joint mode; the drying cylinder is lifted by the lifting device placed on the assembled bracket, there is no need to use a large crane for removing the drying cylinder from the drying part, replacement of the drying cylinder shaft head is more convenient and faster, manpower and material resources are saved, and the time for replacing the drying cylinder shaft head is shortened.

Description

technical field [0001] The invention relates to the technical field of maintenance of the shaft head of a drying cylinder in a paper mill, in particular to an online replacement method for the shaft head of a drying cylinder in a paper mill. Background technique [0002] In the papermaking production line of a paper mill, dozens of drying cylinders are installed. The pulp formed by the machine is pressed by the press section to obtain wet paper. The wet paper is transported to the drying section for drying. The drying section passes through dozens of drying cylinders to For secondary winding of wet paper, in order to shorten the length of the production line and improve heat utilization, the drying section generally installs 2-4 layers of drying cylinders along the vertical direction, and the wet paper is dried by the temperature of the drying cylinders. [0003] The diameter of the drying cylinder is 1-3 meters and the width is 2-4 meters. For a large paper production line,...

AI Technical Summary

Problems solved by technology

The current replacement method is to use cranes or large hoisting equipment to lift the cylinder away from the drying section, and then hoist the dryer back to the drying section after replacing the shaft head of the dryer. The replacement of the shaft head of the dryer is very troublesome, and the replacement time It is very long, and the drying cylinder should be avoided to collide during the hoisting process, so it is necessary to improve it

Images