Double-acting pump
OwnerSvante Bahrtoninventor
Life of this patent
Estimating the term…
Abstract
A double-acting pump having two cavities, each of which is divided into an operating chamber and a working chamber by means of a respective movable partition wall. Each of the operating and working chambers is provided with a valve-controlled inlet and outlet for a gaseous driving medium and a pump-transported liquid working medium. A movement transmission device extends between the movable partition walls and transmits movement of one partition wall to the other and vice versa. This movement transmission device includes a spring element for compression and expansion in the movement transmission direction such that a distance between the partition walls is variable as one partition wall can move independently of the other wall responsive to relative gas pressure in the operating chambers.
Claims5
A double-acting pump comprising two cavities, each of which is divided into an operating chamber and a working chamber by means of a movable partition wall in the form of a diaphragm, each of the working chambers being connected to a common working medium inlet chamber, located between the working chambers, through a respective flap valve mounted in a respective chamber wall, the working chambers being located inwardly with respect to the operating chambers and each operating chamber being located outwardly of an associated partition wall, said operating and working chambers each being provided with a valve-controlled inlet and outlet for gaseous operating medium and pump-transported liquid working medium, respectively, and including a movement transmission device, extending between the movable partition walls, for transmitting movement of one partition wall to the other, said movement transmission device having a spring element for compression and expansion in the movement transmission direction such that, responsive to relative pressure differences in the two operating chambers, one partition wall moves independently of the other partition wall.
A double-acting pump comprising two cavities, each of which is divided into an operating chamber and a working chamber by means of a movable partition wall in the form of a diaphragm, each of the working chambers being connected to a common working medium outlet chamber, located between the working chambers, through a respective flap valve mounted in a respective chamber wall, the working chambers being located inwardly with respect to the operating chambers and each operating chamber being located outwardly of an associated partition wall, said operating and working chambers each being provided with a valve-controlled inlet and outlet for gaseous operating medium and pump-transported liquid working medium, respectively, and including a movement transmission device, extending between the movable partition walls, for transmitting movement of one partition wall to the other, said movement transmission device having a spring element for compression and expansion in the movement transmission direction such that, responsive to relative pressure differences in the two operating chambers, one partition wall moves independently of the other partition wall.
A pneumatically driven double-acting pump comprising two cavities, each of which is divided into an operating chamber and a working chamber by means of a movable partition wall in the form of a diaphragm, each of the working chambers being connected to a common working medium inlet chamber and a common working medium outlet chamber, the inlet and outlet chambers located between the working chambers, through a respective flap valve mounted in a respective chamber wall, the working chambers being located inwardly with respect to the operating chambers and each operating chamber being located outwardly of an associated partition wall, and a movement transmission device, extending between the movable partition walls, for transmitting movement of one partition wall to the other, said movement transmission device having a coil spring for compression and expansion in the movement transmission direction such that a distance between the partition walls is variable responsive to relative gas pressure in the operating chambers.
Dependencies are inferred from the claim text.