Non-water cooled non-metallic piston ring vacuum pump

The utility model relates to a vacuum pump which is used for generate a negative pressure source. The top end and the bottom end of an air cylinder 3 are provided with an air inlet 4 and an air outlet 5. The interior of the air cylinder 3 is provided with a movable piston 1 with piston rings 2 which...

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Bibliographic Details
Main Author ANGUO XU
Format Patent
LanguageEnglish
Published 03.02.1999
Edition6
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:The utility model relates to a vacuum pump which is used for generate a negative pressure source. The top end and the bottom end of an air cylinder 3 are provided with an air inlet 4 and an air outlet 5. The interior of the air cylinder 3 is provided with a movable piston 1 with piston rings 2 which are made up of non-metal material and is not provided with an opening, the cross sections of the piston rings are in rectangular shape, and barrel shape, and the at least three piston rings are provided. The air inlet 4 and the air outlet 5 use a parallel multi-hole type structure. The vacuum pump can normally operate without water cooling, the loss is little, and the vacuum degree can be kept for a long time.
Bibliography:Application Number: CN1996210849U