SU969916A1 - Hydraulic positive-displacement motor - Google Patents

Description

FIELD OF THE INVENTION The invention relates to engine construction, namely to hydraulic displacement engines.

A volumetric hydraulic motor is known that contains coaxial power modules separated by partitions, each of which includes a stator with inlet and outlet openings and longitudinal grooves with separating elements in them, a rotor placed inside the stator: to form working chambers fl.

The disadvantage of this engine is that when using liquids contaminated with abrasives as the working medium, the surfaces of the separating elements and grooves wear out, which leads to the transfer of the working fluid from the pressurized working chambers to the suction and slurry slots. elements to the rotor and the supply-outlet of the working fluid increases the dimensions of the machine /, which generally reduces its viscosity.

The purpose of the invention is to increase the reliability of the engine.

The goal is achieved by the fact that each separating element is equipped with an elastic shell rigidly connected with it and with the inner surface of the longitudinal groove.

5 and having a preliminary deformation in the direction opposite to the rotation of the rotor, while the outer surface of the separating element is formed by successively connected axially cylindrical surfaces in the form of a closed curve in cross section with radii of curvature G, RI R whose centers are located along one straight, lying in the plane of this section, and

 the centers of radii R and R are located at a common point, and the centers of radii R and R are displaced from it in one direction along this straight line, while R S R

 R.

The inlet and outlet of each stator are provided with elastic ciliary septa, the ends of which are in contact with the outer surface of the rotor, and behind the partition wall, along the course of the rotor rotation in the stator, elastic inserts are additionally installed.

Claims (4)

The outer cylindrical surface of each rotor is equipped with open tangential channels filled with elastic material. On the outer surface of each stator there are protrusions covering the NHde with an additionally installed casing to form channels for supplying and discharging working fluid. FIG. 1 shows the engine, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 - section n FIG. 1 / in FIG. 4, the node in FIG. 2, in FIG. 5 - the same Hydraulic displacement motor, the motor contains coaxial power modules 1 separated by partitions 2. Each of the modules 1 includes a stator 3 inlet 4 and exhaust 5 holes and longitudinal grooves 6c with separating elements 7 in them The rotor 8 is placed inside the stator 3 with the formation of working chambers 9 and 10. Each separating element 7 is provided with an elastic shell 11, rigidly connected with it and with the inner surface 12 of the longitudinal groove 6 and having a preliminary deformation in the direction rotated by the rotor 8 . On The rim surface 13 of the separating element 7 is formed by successively mated eccentric cylindrical surfaces 14-17, in the form of a closed curve 18 in cross section with radii of curvature R, - RI. The centers O, O.j, and KOTopHJC are located along a single straight line 191 lying in the plane of this section. Radii R and R have a common center at point 0, and radii R- and R are drawn from centers O and 0 displaced in one direction relative to it, and the inequality% R R. is fulfilled. R. Inlet 4 and exhaust pipe 5 Each stator 3 is provided with elastic ciliary partitions 20, the ends of which 21 are in contact with the outer cylindrical surface 22 of the rotor 8, and elastic inserts 23 are additionally installed behind the elastic ciliary partitions 20 in the course of the rotation of the rotor 8 in the stator 3 8 is equipped with an open tangential channels 24 filled with elastic material 25. On the outer surface 26 of each of the stator 3, a protrusion 27 covering the casing 28 is further mounted to form inlet channels 29 and outlet 30 of the working fluid. The rotors 8 are rigidly connected to the drive shaft 31 and are displaced relative to each other by an angle T — where K is the number of modules. Volumetric hydraulic motor operates as follows. The working fluid through the supply channel 29 and the inlet 4 enters the working chamber 9, drives the rotor 8 and the drive shaft 31 rigidly connected with them. The waste liquid from the working chamber 10 is discharged to the drain through the outlet 5 and the discharge channel 30. The separating element 7 is pressed against the outer cylindrical surface 22 of the rotor 8 by the forces of elasticity of the elastic shell 11, rigidly connected with the separating element 7 and the inner surface 12 of the longitudinal groove b and having a preliminary deformation in the opposite direction to the rotation of the rotor and the pressure of the working fluid on the cylindrical surface 13 of the separating element 7, and the rotor 8 is pressed against the stator 3 by the pressure of the working fluid acting on the elastic material 25 located in the open-. tangential channels 24, which reliably separates the working chambers 9 and 10. Elastic ciliary septum 20 with its ends 21 and elastic inserts 23, interact with the outer cylindrical surface 22 of the rotors 8, remove from it the abrasive elements that are in the working fluid, which increases the duration engine service. The displacement of the rotors 8 relative to each other at an angle l-ic / K, where K is the number of modules, allows to obtain a constant torque on the drive shaft 31 and to make the engine work evenly. This engine performance greatly increases the reliability of its work. Claim 1. A volumetric hydraulic motor comprising coaxial power modules separated by baffles, each of which includes a stator with inlet and outlet openings and longitudinal grooves with spacer elements in them, a rotor placed inside the stator with the formation of working chambers in order to increase reliability, each separating element is provided with an elastic shell rigidly connected with it and with the inner surface of the longitudinal groove and having a preliminary deformation in the direction opposite to the rotation of the rotor, the outer surface of the separating element is formed by successively connected eccentric cylindrical surfaces in the form of a closed curve in cross section with radii of curvature R, R, Ri, and R whose centers are located along one straight line lying in the planes of this section, with the centers of the radii R and Rj located at a common point, and the centers of the radii R and R are shifted from it in one direction into the universal. etry this R “f R- ,, R. 2. Engine p, 1, characterized in that, in order to remove sludge from the rotor surface, the inlet and outlet openings of each stator are provided with elastic ciliary septa, the ends of which are in contact with the outer cylindrical surface of the rotor, along with the elastic ciliary septa, along the rotor rotation Elastic inserts are additionally installed in the stator. 3. The motor according to pl, characterized in that, in order to seal the contact between the rotor and the stator, the outer cylindrical surface of each rotor is provided open tangential channels filled with elastic material .TI-1M. 4. The engine pop. 1, is different from that with the aim downsizing, protrusions are made on the outer surface of each stator, covered by an additionally installed casing with formation of channels for supplying and discharging the working fluid. Sources of information taken into account in the examination 1. US patent 4086881; cl. 123-228, publ. 1978