Pumps – Expansible chamber type – Mechanically actuated distributor
Patent
1993-02-05
1994-01-25
Bertsch, Richard A.
Pumps
Expansible chamber type
Mechanically actuated distributor
417900, 13762543, F04B 700
Patent
active
052811131
ABSTRACT:
In a thick materials pump with paired, preferably parallel, feed cylinders, which alternatingly deliver and intake, and with a slide, which pivots on the axis of a central channel and, for each pair of feed cylinders, connects, by way of a branch channel, the given feed cylinder with a fixed feed conduit connecting to the central channel, while, simultaneously and by means of a sealing control surface provided on the inner wall of the slide housing for each branch channel receiving the thick material and provided with an aperture for each branch channel, closing a second branch channel of the slide and freeing the intake feed cylinder, while identical pressures are developed in the branch channels of equal length, the invention is characterized by the facts that the branch channels (7, 8) are essentially aligned and, in each case, form a right angle with the central channel (9), and that the sealing control surfaces (18, 20) on the slide housing (21) are cylindrically arched.
REFERENCES:
patent: 1413165 (1922-04-01), Keith
patent: 3192914 (1965-07-01), Kopczyk
patent: 3741691 (1973-06-01), Schwing
Basichas Alfred
Bertsch Richard A.
Friedrich Wilh Schwing GmbH
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