Title:
【発明の名称】広帯域脈動減衰器
Document Type and Number:
Japanese Patent JPS5945792
Kind Code:
B2
Abstract:
An insert type attenuator arranged to function as a broad-band frequency rejection filter for pulsations in a liquid in a conduit, such as a liquid stock suspension being fed via a pipe line to a paper making headbox, which includes a housing, a conduit positioned within the housing, and a flexible diaphragm having a pair of substantially horizontal spaced runs positioned in the conduit, with means for flowing the stock suspension through the conduit, and means for introducing pressurized gas into and bleeding gas from the housing and the space between the diaphragm runs. Valve means operate intermittently in response to gross outward deflection of one or both of the runs, caused by long-term liquid pressure decreases and/or gradual increases of gas pressure build-up, to vent gas from between the runs and from the housing, and thus to maintain adequate matching of the pressures of the gas cushion and of the liquid. This maintaining of the diaphragm in a neutral, sensitively responsive condition permits it to deflect instantaneously, in both directions, as required, to reflect pulsations in the liquid.
Inventors:
KAARU ZEE MOOEN
Application Number:
JP2622380A
Publication Date:
November 08, 1984
Filing Date:
March 04, 1980
Export Citation:
Assignee:
BELOIT CORP
International Classes:
D21D1/00; D21F1/00; D21F1/06; F16L55/04; (IPC1-7): D21F1/06; F16L55/04
Attorney, Agent or Firm:
Kimura Masami