Valve control with mechanical memory

Details Valve control with mechanical memory Valve control with mechanical memory

1986-01-10

1987-08-18

Bell, Jr., Houston S.

Fluent material handling, with receiver or receiver coacting mea

Processes

Plural materials

141100, 137412, 210123, 210143, 222 67, 222133, 251251, B65B 304

Patent

active

046870318

ABSTRACT:
A pair of flapper valves are mounted in parallel to control the flow of a fluid into a reservoir. The flapper valves are opened by a first rotatable cam which is rotated through one or more complete revolutions when a float control switch in the reservoir is opened thereby indicating a drop in the level of fluid in the reservoir. Each complete revolution of the first cam actuates an impulse switch for a short duration. The impulse switch energizes a low speed memory motor and increments the output shaft of the motor. Each increment corresponds to one complete revolution of the first cam and, therefore, one unit of a fixed quantity of fluid passing through the valves. The output shaft of the memory motor rotates a second adjustable cam that controls the actuation of a switch which in turn controls a dispenser for dispensing a chemical additive into the fluid added to the reservoir.

REFERENCES:
patent: 3638392 (1972-02-01), Welker et al.
"300 Series Programming Control Valve", Autotrol Corporation, R-202.
"Exploded View & Parts List, 300 Series Programming Control Valve", Form R-210-4/82.

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