| 摘要 |
FIELD: packing facilities. SUBSTANCE: invention relates to devices for hermetically packing small-size articles in film bags under specific air or gaseous media conditions by welding in chamber under vacuum or in shielding medium. Said vacuum packing machine has working chamber with hinged cover, vacuum pump and technological beam with heating elements, all connected by pipelines through valve cluster. Technological beam is installed on double-action current-carrying rod of pneumatic cylinder. One space of cylinder communicates with evacuation system, and the other, with atmosphere. Cross partition is installed in through hole of valve cluster wall with guaranteed clearance from side of valve communicating with atmosphere. Evacuation valve is mounted on said partition. Pneumatic cylinder providing displacement of technological beam communicates with pump through two-way valve. Such design improves functional reliability and processing accuracy of machine in operation, maintenance and adjustment of compact transformable valve cluster. EFFECT: provision of high quality of packing. 2 dwg
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