Diaphragm Pump

(redirected from Membrane pump)
Also found in: Dictionary.

diaphragm pump

[′dī·ə‚fram ‚pəmp]
(mechanical engineering)
A metering pump which uses a diaphragm to isolate the operating parts from pumped liquid in a mechanically actuated diaphragm pump, or from hydraulic fluid in a hydraulically actuated diaphragm pump.

Diaphragm Pump

 

(also called membrane pump), a pump in which the role of the piston is played by a flexible plate or diaphragm that is fastened at its periphery and is flexed by the action of a lever mechanism or by variations in the ambient pressure. Deflection of the diaphragm in one direction causes suction of the liquid being pumped; deflection in the opposite direction applies pressure to the liquid. Diaphragm pumps are used in conveying water that contains an admixture of soil (so-called frog pumps) and in conveying chemically active or flammable liquids.

diaphragm pump

A pump in which the piston is replaced by a clamped diaphragm that is set in vibration by a reciprocating rod, attached at its center.
References in periodicals archive ?
A membrane pump typically exhibits high hydraulic capacitance because its structure allows large volume changes from the pumping chamber.
Based on the definition of the hydraulic capacitance, the pressure change is the primary problem when measuring the hydraulic capacitance of the microfluidic membrane pump. The pressure-deflection relation of the membrane provides an alternative solution, allowing membrane deflection to be measured without measuring the pressure applied to that membrane.
where the plus and minus symbols in (12) and (13) refer to the charge and discharge behaviors of the membrane pump, respectively.
The dimensions of the microfluidic modular membrane pump were 20 mm x 20 mm x 10 mm and the diameter of the channel was 0.5 mm.
In this study, a novel approach was proposed to measure the hydraulic capacitance of a microfluidic membrane pump. Two parameters were measured: the volume change of the membrane pump and the center deflection of the membrane when external force was applied.
In addition, the efficacy of the design means that the meters are not affected by pulsating flow, -- they can be used with membrane pumps -- and they have only a minimal pressure drop: up to 0.5 bar when correctly sized.
Duplex membrane pumps apply a small vacuum to extract clarified water (permeate) from the membranes and convey it to the ozone system.
The product allows efficient working because it dries fast and can be applied with all commonly used spraying equipment, such as double membrane pumps and cup guns.
Maintenance and cleaning on the Schiele is performed when the machine's membrane pumps suction the system dry and the cleaning function uses water to wash the application unit and separation chamber.
ABEL has also shipped two large HMQ series membrane pumps to a gold and silver mine in Chile, where they are being used for dewatering.
Supply of detergents, installation of membrane pumps with flowmeters and maintenance.

Full browser ?