US 4,299,597 A · Process and filter control system for the cyclic counter-scavenging of diaphragm-activated filter hoses

Abstract

A method and apparatus for the cyclical counter-scavenging of filter hoses, particularly the control thereof, is disclosed. According to the present invention, the counter-scavenging of filter hoses is accomplished by gas blasts whose timing and duration are controlled by a fluid control apparatus. The fluid control apparatus consists of a drum distributor having an arm whose position controls the timing of the counter-scavenging blasts, and a valve whose activation controls the duration of the counter-scavenging blasts. The drum distributor and the valve are independently controllable by an electronic circuit including timing signals and control circuitry receiving the timing signals and converting these signals into activating signals for the drum distributor and the valve.

Claims17

Dependent claims

In a filter apparatus including a housing having a plurality of filter hoses and scavenging means therefor, a process for the control of the control dimensions of the cyclic counter-scavenging of said filter hoses by the cyclic fluid activation of diaphragm valves associated with said filter hoses, said process comprising:

providing electronic timing signals for a predetermined scavenging cycle;
transforming said electronic timing signals into at least two groups of independently changeable control signals from said timing signals for the fluidic activation of the diaphragm valves;
and
influencing said control dimensions of each of said scavenging cycles by applying said control signals to electro-mechanical transforming elements controlling the fluidic activation of said diaphragm valves.

1 more element

In a filter apparatus including a housing having a plurality of filter hoses and scavenging means therefor, a filter control system for the cyclic counter-scavenging of said filter hoses comprising:

a fluid activated diaphragm valve for each of said filter hoses;
an electronic circuit including means to produce timing signals;
a first electro-mechanical transformer unit receiving said timing signals and controllable thereby, said first electro-mechanical transformer unit positioned and arranged to initiate the activation of said diaphragm valves;
and
a second electro-mechanical transformer unit receiving said timing signals and controllable thereby, said second electro-mechanical transformer unit also positioned and arranged to initiate the activation of said diaphragm valves,
wherein said first and second electro-mechanical transformer units are independently controllable.

3 more elements

Dependencies are inferred from the claim text.

Process and filter control system for the cyclic counter-scavenging of diaphragm-activated filter hoses

Life of this patent

Process and filter control system for the cyclic counter-scavenging of diaphragm-activated filter hoses

Life of this patent

Abstract

Claims17