SU1286943A1 - Device for determining rheological characteristics of fibrous materials - Google Patents

Abstract

The invention relates to a technique for measuring rheological characteristics; teak fibrous materials. The purpose of the invention is to provide the possibility of determining the full rheological characteristics and expanding the range of materials under study. The presence of two shoulders of the rods and 3, the larger arm 11 of which carries the movable surface 13, provides parallel movement of the surface 13. The deviation of the smaller arm 12 affects the strain gauge. 2 Il. (ABOUT

Description

2

(L

to

00 O)

with |

00

.

FIG. /

The invention relates to a technique for determining the rheological characteristics of fibrous materials by measuring the response of a material to shear loading and can be played in a pulp-and-paper npoMbtnuieHHTHTH for laboratory testing and factory testing of fibrous materials.

The purpose of the invention is to make it possible to determine the full rheological characteristics of a material and to expand the range of research materials.

FIG. 1 is a schematic of an apparatus for determining the rheological characteristics of fibrous materials; FIG. 2 is a view A of FIG. one.

The device contains a base 1, pillars 2 and a bar 3 fixed between the pillars 2. On the base 1, blocks 4 are installed, through which weights 6 and 7 are suspended by means of flexible t 5, balancing bar 3. Over the base 1 there is a fixed surface 8 with a clip which can be lifted with the help of a lifting mechanism fixed on one of racks 2; Axis 9 of rod 3 is installed in rolling bearings 10 and fixed in racks 2. It divides rod 3 into two arms: large 11 and small 12. Attaches to the large arm 11 of the rod movable surface 13 with a clip The deformation sensor 14 is mounted on the uprights 2 and, through the stop 15, detects the deformation of the floccule 16, which is fixed in the clips.

The shear tests are carried out as follows.

Floccula 16 is mounted on a fixed surface 8 and fixed

clamp its lower end. Using a movable mechanism, the surface 8 with the floccule 16 is brought to the moving surface 13 by a distance equal to

the floccules of the test floc is 16, and

fix the upper end of the flocula with a clip. Due to the weights added successively to the load 7, the surface 13 is displaced

parallel to the base 1 and creates a deformation of floccule 16 in shear mode. The deformation of the floc is fixed by an appropriate recording device 17.

Claims (1)

Invention Formula 0 five 0 A device for determining the rheological characteristics of fibrous materials, including movable and stationary surfaces in contact with the test specimen and a base, each end surface of which is equipped with a block with a flexible pull thrown through it connected to the movable surface at one end and the other at the same time the fixed surface is mounted on the base with the possibility of vertical fixation, characterized in that, in order to ensure the possibility of determining the full rheological character material and the range of materials studied, the device equipped with a double-shouldered bar mounted parallel to its supporting posts fixed to the base, wherein a movable surface is installed on the large arm of the rod, and a stop is mounted on the smaller arm mechanically connected to the strain gauge, the output of which is connected to the recording device. 0 If FIG. 2