Pneumatically operated reciprocating pump

A pneumatically operated reciprocating pump comprising two opposed pumping chambers, in each one of which a respective flexible bellow slides between a compressed position and an expanded position, a slide of the two flexible bellows being controlled by shuttle means capable to alternatively let a gaseous fluid in one of the two chambers for expanding the respective flexible bellow, whereby when each one of the two flexible bellows assumes a threshold expanded position it interacts with mechanical means allowing the gaseous fluid to be discharged from the respective chamber, each one of the two flexible bellows having a front end in contact with a shaft that is alternatively pushed by one of the two flexible bellows thus compressing the other, each one of the two chambers being connected to at least one respective suction valve and to at least one respective delivery valve,

• wherein each delivery valve is provided with compensating elastic means capable to compensate variations of rate of fluid that is pumped by the respective chamber,
• wherein the pump further comprises a control electronic unit that receives a signal indicative of the flow of the pumped fluid from a flow sensor mounted on a delivery pipeline of the pump, the control electronic unit controlling an electronic pressure regulator mounted on the compressed air delivery pipeline before said shuttle means depending on a predetermined flow value of the pumped fluid, and
• wherein the control electronic unit is connected, for at least one flexible bellow, to at least one first sensor internal to the pump capable to provide the control electronic unit with at least one detection signal when said at least one flexible bellow assumes a position within the respective chamber.

A pneumatically operated reciprocating pump comprising two opposed pumping chambers, in each one of which a respective flexible bellow slides between a compressed position and an expanded position, a slide of the two flexible bellows being controlled by shuttle means capable to alternatively let a gaseous fluid in one of the two chambers for expanding the respective flexible bellow, whereby when each one of the two flexible bellows assumes a threshold expanded position it interacts with mechanical means allowing the gaseous fluid to be discharged from the respective chamber, each one of the two flexible bellows having a front end in contact with a shaft that is alternatively pushed by one of the two flexible bellows thus compressing the other, each one of the two chambers being connected to at least one respective suction valve and to at least one respective delivery valve,

• wherein each delivery valve is provided with compensating elastic means capable to compensate variations of rate of fluid that is pumped by the respective chamber,
• wherein the pump further comprises a control electronic unit that receives a signal indicative of the flow of the pumped fluid from a flow sensor mounted on a delivery pipeline of the pump, the control electronic unit controlling an electronic pressure regulator mounted on the compressed air delivery pipeline before said shuttle means depending on a predetermined flow value of the pumped fluid, and
• wherein the control electronic unit is connected to one or more second sensors for sensing losses in the gaseous fluid circuit, capable to provide the control electronic unit with at least one signal of detection of presence of pumped fluid.