Title: Bidirectional diaphragm-type pulse reverser with phase difference
Application Number: 87105571 Application Date: 1987.08.14
Publication Number: 1019908 Publication Date: 1988.08.03
Approval Pub. Date: 1991.08.07 Granted Pub. Date: 1991.08.07
International Classifi-cation: A01J5/12
Applicant(s) Name: Kombinat Fortschritt Landmaschinen VEB Anlagenbau Address:
Inventor(s) Name: Spillecke Bolkmar
Attorney & Agent: ZHENG SONGYU
Abstract:
    The present invention improves a known two-frequency diaphragm pulsator to the effect that the latter is less sensitive to fluctuating rubber quality of the diaphragms, is simpler in design, saves space and is therefore less expensive. The reworking in the event of diverging rubber quality can then largely be omitted. The space which is saved permits an improved configuration of the ducts and thus a reliable pulse curve. According to the invention, the second valve has been replaced by a hollow valve which is connected to a diaphragm and has its own sealing seat. The space surrounding the hollow valve is connected to the vacuum, and is separated from the alternating pressure chamber by a diaphragm or a piston.
Time: 19
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