Wilden Pump and Engineering LLC

Wilden Pump & Engineering Co.

Greg S Duncan

Gary K Lent

Curtis W Dietzsch

Carl J Glauber

Robert Foster Jack

Chris Distaso

An elongate air operated pump includes a pump chamber, a bladder inside the pump chamber, inlet and outlet valves to and from the chamber and an air control system. The air control system includes a control valve alternately communicating compressed air and exhaust to atmosphere to a venturi with a first end, a second end and a throat port. The first end of the venturi receives continuous compressed air. The second end receives the alternately communication of compressed air and exhaust to atmosphere from the control valve. The throat port of the venturi is in continuous communication with the bladder to pressurize and draw a vacuum on the bladder. The valves may be pneumatic pinch valves controlled by the control valve to cycle with the bladder or passive one-way pump valves.

Air operated pump

An air driven diaphragm pump includes an performance control actuator having a housing with opposed air chambers. The pump includes pump chambers facing the air chambers and pump diaphragms extending between each air chamber and each pump chamber, respectively. The actuator further includes an air valve, an intake to the air valve and an engagement. The intake includes an intake passage and a performance control intake adjuster rotatably mounted. The intake adjuster has a helical channel and a closure element extending adjustably into the intake passage. The engagement engages the helical channel for control of the intake. The helical channel has varied pitch to provide a nonlinear relationship between rotation and axial advancement of the intake adjuster. The nonlinear relationship gives flow rate proportional to the angular rotation of the intake adjuster. The end points of the channel provide a practical minimum pump performance of about 40% of maximum pump flow rate and a maximum pump performance of about 97% of maximum pump flow rate.

Air driven pump with performance control

A reciprocating air distribution system includes a valve housing, having a cylinder therein. A valve element is slidably mounted within the cylinder. Also provided is an inlet to the cylinder, an exhaust from the cylinder and air distribution passages which are controlled by the valve element to be connected either with the intake or the exhaust. A nonmetallic gasket of thermally insulative material and thickness is between the inlet and air distribution passages on one side and the valve element and exhaust on the other. The buna elastomer has carbon black filer to make the gasket statically dissipative. The nonmetallic gasket provides channels which are part of valve control passages which are associated with a pilot valve. The valve control passages are from the inlet to both ends of the cylinder with at least one passage controlled by the pilot valve. These channels are closed by one of the components between which the gasket is located. The reciprocating air distribution system includes a restricted inlet such that the air inlet ports are of a combined area of approximately 0.057 square inches and of a ratio of exhaust port area to inlet port area of approximately 8.0 for models achieving up to 180 gallons per minutes, and the air inlet ports are of a combined area of approximately 0.083 square inches and of a ratio of exhaust port area to inlet port area of approximately 5.4 for models achieving between 180 and 275 gallons per minutes. A muffler is in communication with the exhaust. The muffler includes a cavity open to the housing of the valve and separated by an exhaust gasket. The exhaust gasket includes a locking flange extending into the cavity of the muffler to resist the pressure within the cavity.

Reciprocating air distribution system

A double diaphragm pump having an air chamber housing centrally located between two pump chamber housings. The air chamber housing includes a center section and two outwardly facing concave discs. Each pump chamber housing includes a pump chamber shell mating with one of the discs with a flexible diaphragm therebetween. Check valve chambers and inlet and outlet passages associated with each pump chamber and with inlet and exhaust manifolds control flow through the pump. A solenoid actuated valve alternately directs air pressure to each of the two diaphragms for reciprocal pumping action. Inner pistons associated with the diaphragms include stops which limit pump stroke in each direction. The solenoid may be driven by conventional electronics on a timed stroke or responsive to flow considerations.

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Huntington Beach, CA, United States of America

Greg S Duncan