Abstract The invention relates to a technical solution of a doubleacting, thus relieved, sliding-vane pump, its capacity being adjustable in a continuous way during operation of the pump. The adjustment of the capacity of said pump is performed at constant speed of the pump rotor, by means of turning a movable cylinder, movable inlet and outlet chambers, or by deformation of a flexible cylinder, relatively to the modification of the pump. Said pumps can have pendulous vanes mounted non-centrically on shafts, or rotatively, or artitulatively mounted in channels of the rotor, or rotatively and centrically mounted on shafts. The vanes mounted in all the modification of the pump are provided with seals at the contact areas with the cylinder, and in channels of the rotor. The seal of the vane against the cylinder is realized by means of a plate pack, pushed out individually by an elastic and flexible material. The sealing of the vane in the rotor is secured by means of a rubber bar or elastic thin-walled seal with spread arms.
Variable-capacity double-acting sliding-vane pump which being driven by means of another pump becomes an engine of variable torque, consisting of a housing enclosing a cylinder arranged therein, and a rotor with vanes mounted therein, which vanes slide over the bearing surfaces of the cylinder as the rotor rotates, said vanes being self-aligning and sealed by means of a plate pack placed loosely in a channel cut out in each vane and pushed outwards by an insert made of an elastic material, the channel for the plates being cut out near the edge of the vane, the center of the thickness of the plate pack, remaining in contact with the bearing surface, lying in the point of intersection of the extended line of the curvature of the vane bearing surface with the cylinder bearing surface.
Claim 2
Dependent Claim
134 words
Variable-capacity double-acting sliding-vane pump which being driven by means of another pump becomes an engine of variable torque, consisting of a housing enclosing a cylinder arranged therein, and a rotor with vanes mounted therein, which vanes slide over the bearing surfaces of the cylinder as the rotor rotates, said vanes being self-aligning and sealed by means of a plate pack placed loosely in a channel cut out in each vane and pushed outwards by an insert made of an elastic material, the channel for the plates being cut out near the edge of the vane, the center of the thickness of the plate pack, remaining in contact with the bearing surface, lying in the point of intersection of the extended line of the curvature of the vane bearing surface with the cylinder bearing surface.
Claim 3
Dependent Claim
19 words
The pump of claim 1, in which the vanes are mounted on the rotor by means of comb hinges.
Claim 4
Dependent Claim
31 words
The pump of claim 2 including movable crosses with arms mounted rotatively on a control sleeve, and connected with a lever for changing the positions of suction chambers and delivery chambers.