RU1798648C - Device for sampling and preparation of cake - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to devices for sampling apparatus and transport lines and processing samples to extract gases and vapor components from them for subsequent analysis. using gas analyzers (gas detectors). The purpose of the invention is to increase operational reliability. The device comprises a dispenser body with a working cavity for collecting a sample of a certain volume, on top of which there is a slider for cutting off the sample from the flow of cleaning the dispenser body from adhering or sprinkled meal, and is located below. a piston driven from a pneumatic cylinder to evacuate a sample of the working cavity and clean it from sample residues. The device is controlled by commands from a pneumatic cam control program unit, which, when the sample is purged, vapor-gas mixture is supplied to the gas analyzer (gas detector) for analysis or signalization of its content. 2 ill. ate

Description

The invention relates to devices for sampling apparatus and transport lines and processing samples to extract gas and vapor components from them for subsequent analysis using gas analyzers (gas detectors).

The aim of the invention is to increase the operational reliability of the device during sampling of meal of various oil content, moisture and particle size distribution.

The invention is illustrated by a block diagram (Fig. 1) and a drawing of a sampling and preparation unit (Fig. 2), which shows its cross section. .

The device comprises a sampling and sample preparation unit for meal 1, a pneumatic program unit 2, connecting pneumatic lines 3. A mixture of solvent vapor with air extracted from the sample is supplied to the sensor of a gas analyzer (gas detector) 4.

The sampling and preparation unit comprises a housing 1 with a working cavity of the dispenser 2, bounded on top by a slider 3, having a reciprocating movement in a horizontal plane from the pneumatic cylinder 4 through a rod 5 connected to the slider.

The bottom of the working cavity of the dispenser is limited by a piston 6 having a reciprocating movement in a vertical plane from the pneumatic cylinder 7 through the rod 8.

The working cavity of the dispenser contains holes 9 on the lateral surfaces for blowing it and a meal sample.

The device operates as follows: in the initial state at the beginning of the operating VI

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of the first cycle, the slider 3 with the help of the pneumatic cylinder 4 is moved to the extreme position, in which the working cavity 2 is open. The piston 6 is lowered by means of a pneumatic cylinder 7. The working cavity is prepared for collecting a sample from a flow of free-falling meal.

After the end of the sampling cycle, at the command of the control unit, the pneumatic cylinder 4 moves the slider 3 to the other extreme position, thereby cutting off the sample from the meal flow and closing the working cavity of the dispenser. According to the next command, the selected sample is sealed by supplying compressed air under the membrane 10 of the slider.

This is followed by the Sample holding cycle to ensure that the solvent contained in the sample volume passes into a gaseous state, at the end of which, upon the command of the control unit through the holes 9 in the side surface of the working cavity, the main sample is purged with air at a stabilized flow rate and the mixture formed solvent vapor with air is supplied to the sensor of the gas analyzer (detector).

At the end of the cycle, the main purge according to the following sequentially program block commands the cycle operations are performed: depressurization of the sample, opening of the working cavity by moving the slider to the extreme position, evacuating the sample from the working cavity by moving the piston 6 of the pneumatic cylinder 7 to its highest position, cleaning the upper surface of the housing 1 the dispenser with a slider 3, which executes a reciprocating motion upon the command of the program unit while simultaneously blowing overpressure air through the holes 2 working cavities of the batcher from the remains of small fractions of meal.

Next, the cycle repeats.

Using the proposed device allows you to instrumentalize the control of the limit values of the content of residual solvent containing

in the meal fed to the meal elevator storage, which makes it possible, in comparison with the currently used laboratory method with manual sampling, to obtain operational information about

solvent content, ensuring the required safety and labor protection conditions, optimal management of the solvent stripping process from the meal, reduction of solvent losses.

Claims (1)

SUMMARY OF THE INVENTION A sampling and preparation device for determining residual solvent containing a vertical portion meal supply pipeline, a dispenser housing with a cylindrical working cavity bounded by a movable cover and a bottom associated with pneumatic actuators that are associated with a command apparatus, characterized in that, in order to increase operational reliability, a sampling and pretreatment device is installed in a vertical section of the meal supply pipeline, the cover of the working cavity of the dispenser is made in the form of a slider, the bottom of the working cavity .- in the form of a piston, the stroke of which is limited by the height of the working cavity of the dispenser. Editor FIG. Z Compiled by V. Dobrenky Techred M. Morgenthal Proofreader S. Lisina