Fluid handling – Self-proportioning or correlating systems – Self-proportioning flow systems
Patent
1974-08-15
1976-06-15
Nilson, Robert G.
Fluid handling
Self-proportioning or correlating systems
Self-proportioning flow systems
91 50, 417397, G05D 1103
Patent
active
039630382
ABSTRACT:
The invention is directed to a hydraulically actuated feed and proportioning pump with a centrally located movable diaphragm which divides a main pump housing into two variable volume main fluid chambers. Each main fluid chamber has its own integral inlet and outlet valve means which enables the chambers to cyclically discharge fluid mixture which is part additive and part water obtained from a main feed line. The movable diaphragm is alternately exposed to a fluid source under pressure on one side and to a relative vacuum, created by the evacuation of fluid, on the other side.
A piston is connected to the movable diaphragm and moves slidably within a piston housing forming thereby two piston chambers. The movement of the piston within its housing creates a vacuum in one of the piston chambers, and the additive (e.g., fertilizer) is drawn into the piston chamber and later sent, on a piston delivery stroke, into the fluid chamber and mixed within the main fluid chamber, in a given volume proportion with the water from the main feed line.
REFERENCES:
patent: 2081239 (1937-05-01), Klopfenstein
patent: 2803260 (1957-08-01), Wells
patent: 2917025 (1959-12-01), Dulaney
patent: 2951745 (1960-09-01), Sweet et al.
Drucker I. Morley
Nilson Robert G.
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