SU369204A1 - - Google Patents

Description

NETWORK PART OF PAPER MACHINE

one

The invention relates to the pulp and paper industry.

Constructions of a privately used papermaking machine are known, containing a number of forming devices with nets, forming cylinders, nanoscale devices and idle shafts, as well as self-detachable cloth.

The purpose of the invention is to improve the quality of the multi-layer fabric produced, the speed of the machine and the convenience of its service.

This is achieved by the fact that the grids of the forming devices are installed to the self-detachable cloth in contact with them, and double chambers are mounted inside the forming cylinders, each of which has a latch on the section of the camera's jumper; for forming cylinders, vertical inlet devices are installed, the inner space of which between the lower and upper lips is divided by elastic non-tongs into narrowing curvilinear channels.

FIG. 1, but the net part is the papermaker of the machine, general appearance; in fig. 2 - form 1, its device.

The forming device contains a vacuum-forming cylinder 1, a grid 2 enclosing cylinder 1 and forming a flat section when it comes off, an inlet device 3 consisting of a rectangular cone collector 4, leveling pipe element 5, perforated plate 6 and tapering channels 7 formed by elastic jumpers.

To regulate the flow rate in the collector 4, a shutter 8 serves. The lower lip 9 is at the level of the lower seal of the first compartment 10 of the double vacuum chamber 11. The upper lip 12, which covers the entire area of the cylinder molded /, is equipped with a local adjustment mechanism 13. The compartments} 0n 14 by the first double camera communicate with each other and are separated by the rear 15; moreover, water is discharged from the compartment 10 to the front side. The compartment 16 and / 7 of the second chamber are also interconnected and equipped with a backplate 15. Water from the second half of the chamber is discharged to the CTOpoiiy unit through compartment 17. The valve 15 adjusts the vacuum in the compartments depending on the conditions of the molding mode.

On a flat section of the net 2 between the net and the shaft 18 and the cylinder / iodine, the dewatered elements 19 are located. On the shaft 18, there is an irradiation shaft 20, which serves to connect the individual layers of the web. The grid part, depending on the type of production, consists of one or several devices, located successively one after the other and united by a common self-detachable cloth 21, in which a rotary suction press 22 is installed, which has an additional additional cloth 23 in order to avoid crushing the cardboard. In addition, the self-detachable cloth 21 has two or three stripes 24 for the final dewatering of the web. During the operation of the grid part 1, the mass from the inlet device 3 is fed through the channels 7 into the closed zone of forming the cylinder. The quantity and speed of the mass to be supplied is controlled by the automatic valve 8. Optimal molding conditions are achieved by the speed of the incoming mass, by vacuum in the compartments of the double chambers and by adjusting the position of the upper lip 12. The formed web is dehydrated on the flat part of the grid 2 using elements 19 and is not affected by the grid on the self-removable cloth 21. The connection of the elementary layers on the self-removable cloth is carried out with the help of pressure rolls 20. After the connection of all the elementary layers, the self-removable cloth together with the canvas passes IT rotary suction press 22 and two or three presses 24. Object of the Invention The grid part of a papermaking machine, comprising a number of forming devices with grids, forming cylinders, inlet devices and pressure rollers, as well as a self-detachable cloth, which is the quality of the fabric produced, the speed of the machine and the convenience of its maintenance, the grids of the forming devices are set obliquely to the self-detachable cloth in contact with them, and double chambers are mounted inside the forming cylinders, each which has a valve on the dividing chamber on the lintel, vertical admission devices are mounted on the forming cylinders, the inner space of which between the lower and upper lips is divided by elastic lintels into narrowing curvilinear channels.

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