SU1688290A1 - Machine for manufacturing micaplate tubular and band materials - Google Patents

Abstract

The invention relates to electrical engineering, in particular to machines for the manufacture of micaceous web and tape materials. The purpose of the invention is to improve the homogeneity of the structure of mica papers across the width of the canvas. The machine for the manufacture of mica-like roll and tape materials contains a pulp supply unit, made in the form of a tray 3 with tubes 8, slides 4 and knives 5, an inlet 9, designed to fill with water a container with a sloped grid 14 located therein. Under the grid 14 all over its length is installed vacuum chamber 18. The inlet device 9 in the lower part is made open, its front wall 10 is made L-shaped. Part of this wall 15 is parallel to the grid 14. On the inner surface of the wall 10 are parallel channels. The inlet wall 11 of the inlet device 9 is rounded in the direction of the grid 14. A clamping device 17 is mounted on the grid 14 behind the rear wall 11. 3 Cp f-ly, 2 ill. I fe O 00 00 th o FIG.

Description

The invention relates to electrical engineering, in particular to machines for the manufacture of micaceous web and tape materials.

The purpose of the invention is to improve the homogeneity of the structure of mica papers across the width of the canvas.

Figure 1 is a schematic representation of the machine; figure 2 - view And figure 1, the distributor. The machine includes a pulp supply unit 1, into which the pulp from the mixing basin of the pulp receiving compartment, consisting of a receiving pocket 2, leveling tray 3, gates 4 serving to reduce the flow turbulence, parallel knives 5, dividing the flow of pulp into a stream, the distributor streams 6 with vertically spaced channels 7 and inlet tubes 8.

The knives are located in front of the distributor of 6 tubes 7 streams 6, which allow to dissolve the stream diluted into separate streams and occupying the width of the narrow leveling tray, the width of the formed web, under the inlet tubes 8 of the distributor 6 there is an inlet 9, made in the bottom the part is open, located in the tank 10 filled with water. Reflectors are located on the front L-shaped 11 and rear 12 walls of the inlet.

13. To the back wall of the inlet device, ribs are attached, through which the inlet device is divided into a number of channels

14, the number of which corresponds to the number of individual streams. The back wall is rounded and at a distance of 10-60 mm from them there is a grid 15, on which the formation of the web takes place. Above the grid, pressed by the end face to the front wall 11 of the inlet device 9, is located parallel to the Grid part of the wall 11 - wall 16. The shield is divided by longitudinal ribs 17 installed in the extension of the side walls of the shafts. The number of edges is chosen equal or extremely large number of these walls. A clamping device 18 is mounted on the grid 15 behind the rear wall 12, which ensures a tight fit of the grid to the first of the vacuum chambers 19.

The vacuum chambers 19 have a conical bottom and are equipped with discharge pipes 20 of accumulated mica with cranes and pipes 21 for setting the web forming mode also with cranes.

The device works as follows.

The pulp from the smaller basin flows through the pipe to the tray, where it is pre-spread and enters the receiving pocket 2 of the flow divider 1, equipped with

a vertical partition to reduce flow turbulization. From the pocket 2, the pulp is poured onto the leveling chute 3, on which, by means of the gates 4, the turbulence is further reduced and the flow is equalized across the width of the tray. Then the tray with the help of knives 5 is divided into separate streams and, falling into the open from the top and closed front channels 6, is distributed on the width of the poured solid,

Each of the individual flows through the outlet tube 8 of the distributor is guided to the first reflector 13 located on the front wall 11 of the corresponding shaft 14 of the inlet 9, from which it is passed to the next reflector of the opposite wall, etc. for uniform spreading of streams over the entire width of the cast sheet 5 (in total for all the shafts of the inlet).

Flows from the lower rounded part of the shafts 14 of the inlet device 9 are fed to the grid, on which the clamping device 18 is installed, which ensures uniform distribution of particles across the grid width and prevents pulp from flowing between the grid 15 and the rear of the inlet 12. On the mesh 15, a web is formed. Above the set, parallel to it, is a restrictive shield 16, the upper end of which protrudes above the pulp mirror. The presence of a shield, provided with longitudinal

0 by the ribs 17, ensures the pulp flow in horizontal directions. The formation of the web occurs under the influence of vacuum chambers 19, the conical bottom of which ensures the uninterrupted release of mica particles trapped in the chambers through the discharge pipes 20, and the presence of pipes 21 for setting the formation of the web formation with a crane allows them to be set to

0 specified mode of operation, do not configure the machine any more in the process of work, or at the time of the reset, or after it. The selection of the distance to install the grid from the rear wall 12 of the inlet device 9 in the interval

5 10-60 mm is dictated by the fact that at smaller distances flocculation of mica particles occurs, leading to heterogeneity of the paper structure, at longer distances - lateral displacement and vertical turbulization of the flow over the surface of the grid. This also leads to a heterogeneous paper structure.

Claims (4)

Claims 1. A machine for making mica-plating roll and tape materials, comprising a pulp supply unit, an inlet device with front and rear walls, designed for filling with water a container with an inclined grid and located under the latter along the entire length of vacuum chambers with lids, so that, in order to increase the homogeneity of the structure of mica paper across the width of the web, the pulp supply unit is made in the form of a tray with a number of vertical tubes and gates installed above it, the inlet device in the lower part is open, its front wall is L-shaped, part of this the walls are parallel to the grid and parallel channels are made on its inner surface, with each of the lower ends of the vertical tubes being located above the respective channel of the inlet device. 2. The machine according to claim 1, characterized in that the rear wall of the inlet device rounded along the grid. 3. The machine according to claim 1, about t and h and y and with the fact that on the grid behind the back wall of the inlet device installed clamping device. 4. Machine pop.1, differing from the fact that the pulp feeding unit contains parallel-arranged knives placed in front of the upper end sections of the tubes. Type A FIG. 2