SU244696A1 - AUTOMATIC PHOTO-CALORIMETRIC ANALYZER - Google Patents

Description

Photo calorimetric analyzers are known that contain a tape mechanism, an analytical cell, an indicator solution cylinder, a sampler, and secondary devices.

The proposed device differs from the known ones in that it is provided with a second tape-carrying mechanism with a tape of filter material and a system of rollers ensuring the contact of both tapes. The sampling device is located at the point of contact between the tapes on the tape side of the filter material.

This allows the analysis of viscous suspensions.

In addition, the sampling device is made in the form of a flow cell with an open surface facing the filter material.

The drawing shows the proposed device.

The drive roller / with a finely grooved surface is rotated by a microelectric motor to better draw the tape. The pressure roller 2, also with a finely grooved surface, serves to ensure reliable adhesion of the textile belts to the lead roller and does not prevent the slippage of one belt relative to another. Flow chamber 3 sampler performed

in the form of a small block of Plexiglas, in which two parallel channels (channels of inflow and outflow of the reaction mass) are connected by a chute, through which the reaction mass flows. With the overflow, the mass touches the lower belt and, sticking to it, is smeared with a narrow strip, the width of which is approximately equal to the width of the overflow groove (2-3 mm). Guide rollers 4 and lead

and pressing rollers ensure the contact of both belts in the section between them. On bobbins 5 and 6 there is a supply of blank tape. The take-up reels 7, 8 are equipped with clutches, which provide the winding of a belt with a constant tension.

The block of photo cells consists of two photo cells of the type CCV-51. Worker 9 and comparative JO photocells are placed in an airtight casing, which is made of sodas with an ohm drier. To focus the beam from the illumination lamp //, lenses 12 are used. The working photocell is located opposite the receiving window 13, which is closed with hermetically sealed transparent glass.

The indicator liquid is poured into a cylindrical glass cartridge 4 with a siphon.

It builds from another white fabric 16, onto which the filtered phase of the reaction mass is transferred. Usually this filtered phase is colorless or slightly colored. The use of two fabric tapes is necessary in order not to clog the photovoltaic part of the device with dyed products of the solid phase of the reaction mass. After contact, these tapes are consumed. The one on which the reaction mass was applied is wound onto a take-up reel. The tape, wetted by the liquid phase, moves further past the indicator device, wetting it with its indicator solution, to the receiving window of the photocell and then winding it onto the second receiving reel.

The change in the color of the tape is captured by the photocell and, using a secondary registration of its device, is recorded on a large chart in a form of a characteristic curve.

Subject invention

Claims (2)

1. An automatic photocalorimetric analyzer containing a tape-testing mechanism, an indicator solution cylinder, an analytical cell, a sampling device and secondary devices, characterized in that, in order to carry out an analysis of viscous suspensions, the device contains a second tape-transport mechanism with a tape of filter material and a system of rollers ensuring the contact of both belts, while the sampling device is located at the point of contact of the belts on the belt side of filter material. 2. A device according to claim 1, characterized in that the sampling device is made in the form of a flow cell with an open surface facing the filter material.