FIELD: machine building.
SUBSTANCE: gas analyser consists of case of air intake device wherein there are arranged corrugated rubber bellows 9 with two flanges and cartridge 10 with a spring. In internal crimps of the bellows there are installed spacers to ensure its rigidity and to maintain constant volume, rod 7 for bellows compression, and holder 5 with an arrester. Also, a stationary bushing directing the rod at bellows compression is assembled on an upper plate of the case. A rubber tube is put on connecting pipe 2 from an internal side. The rubber tube is connected with an internal cavity of the bellows through a lower flange. An indicator tube is connected to an opposite free end of the rubber tube. On cylinder surface of rod 7 there are made four lengthwise grooves with two recesses designed to hold two positions of the rod with an arrester. Distance between two recesses on the grooves is selected so, that the bellows intakes specified volume of analysed air when the rod travels from one recess to another.
EFFECT: raised efficiency, operation speed and reliability of system response.
1 dwg
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