Reverse-running pump

Abstract

The invention relates to the machine building industry and can be used for reverse-running pulsation-free high-pressure pumps. The aim of the invention is to improve the operating characteristics of pumps of a similar variety (and the manufacturability thereof). The inventive pump comprises a rotor with orifices and at least two displacers arranged therein, a working chamber, a barrier separating the increasing area from the decreasing area. The working chamber is formed by surfaces of an annular groove embodied in the end of the rotor in such a way that the inner surfaces thereof confine the working chamber in a radial direction and slide into contact with the barrier's surfaces. The orifices of the rotor containing the displacers are oriented in an axial direction and open out onto the annular groove in such a way that the continuations thereof form pockets on the inner surfaces of the groove, thereby confining the working area in the radial direction.

We claim:  
     
         1 . A reversible pump, which comprises a housing with inlet and outlet ports, a rotor provided with channels, wherein at least two axially movable displacers are located, a working chamber, a partition, separating suction and injection spaces, insulating members, a plurality of members setting mutual axial positions of said displacers, means connecting cavities at both sides behind the longitudinally opposite ends of the displacers, said working chamber restricted in radial direction by the surfaces of an annular slot, provided in the end of said rotor and extending through said channels in the rotor, wherein said displacers are located, and recesses in said annular slot surfaces formed by the intersection of said channels with said annular slot, wherein surfaces of said partition are in a sliding contact with said surfaces of an annular slot.  
     
     
         2 . The pump, according to  claim 2 , wherein surfaces of the end of the rotor provided with the annular slot, opposed with respect to said annular slot, are in a sliding contact with the ends of seals, mounted opposite said surfaces of the rotor.  
     
     
         3 . The pump, according to  claim 2 , wherein seals are implemented as hollow cylinders, mounted in annular slots provided in the housing.  
     
     
         4 . The pump, according to  claim 3 , wherein the hollow cylinders are axially movable along an axis of rotation of the rotor.  
     
     
         5 . The pump, according to  claim 4 , wherein the hollow cylinders are provided with at least one pass-through channel, extending from the end of the cylinder facing the rotor end towards an annular slot, wherein said cylinder is mounted.  
     
     
         6 . The pump, according to  claim 1 , wherein at least one seal axially movable along the axis of rotation of the rotor is mounted opposite the second end of the rotor, wherein the seal is provided with at least one pass-through channel, extending from the end of the seal facing the rotor end towards an annular slot, wherein said seal is mounted.