FIELD: engines and pumps.
SUBSTANCE: pump for fluid substance contains chamber which holds pumped fluid substance during operation, chamber which consists of main cavity of cylindrical form, limited by the first and the second end walls and side wall, and additional cavity which continues in radial direction from the main cavity. During operation one or more drives induce oscillatory displacement of the first end wall in a direction transverse to plane of the first end wall. During operation end walls axial oscillations induce radial oscillations of pressure of fluid substance in the main cavity. Additional cavity separates side wall from the first end wall so that the first end wall may displace against side wall when the drive is switched on.
EFFECT: improving effective output, increasing drive service life.
8 dwg, 31 cl
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