RU2004849C1 - Positive-displacement machine - Google Patents

Abstract

SUMMARY OF THE INVENTION In the inner cavity of the working channel of the housing, a flexible piston is arranged in the form of a bag assembled from separate plates with holes with the possibility of forming a spatially curved channel. A spatially curved shaft is installed in the channel. located in the bearings of the housing and connected to the shaft of the drive motor. The plates are made in the form of disks with eccentrically arranged holes in which bushings with an angled central hole are mounted. The bushings are mounted on a spatially curved shaft. The cavity of the working channel of the housing is made in the form of an oval. The diameters of the disks and the inner semicircle of the working channel cavity are made equal to 1 zlf. Zil.

Description

The invention relates to mechanical engineering, namely pump engineering, and can find application in industrial facilities, on ships of the sea and river fleet, where the pumped medium can be viscous,

A known hydraulic volume displacement machine, which comprises a housing with inlet and outlet nozzles, a flexible piston located in the housing, is made in the form of a pack of flat frames sealed together, having oval openings mounted for movement in a direction perpendicular to the axis of the working channel, and spatially a curved shaft placed inside the frame package, laid in bearings and attached to the drive motor.

In a volume displacement hydraulic machine, there is an increased friction of the shaft against the frame and their wear, divergence of the frame and a decrease in lateral tightness, which reduces hydraulic efficiency. In addition, there is a low manufacturability of the design of machine elements due to their rectangular shape, requiring complex types of machining of parts.

In order to obtain higher energy characteristics and greater manufacturability, a device is proposed comprising a housing with inlet and outlet nozzles, a flexible piston placed in the housing and a spatially curved shaft laid in bearings and attached to the drive motor. The housing in cross section has the shape of two half cylinders, separated by flat inserts, the Flexible piston is a package of disks having eccentrically located holes in which they are installed with the possibility of ascheni sleeve made from them at an angle to the end surfaces of the central openings, with their landings spatially curved shaft. The axis of rotation of the shaft is located in the plane of symmetry of the housing and is offset relative to the axis of the housing,

In FIG. 1 is a structural diagram of a longitudinal section of a volumetric displacement hydraulic machine; on Fig, 2 is a diagram of a cross section (in enlarged view); in FIG. 3 is a section AA in FIG. 1.

The hydraulic machine comprises a housing 1 with inserts 2, a spatially curved shaft 3 lying in the bearings 4. The sleeves 5 are mounted on the shaft, the axes of which are parallel to the axis of rotation of the spatially curved shaft due to the central holes made at an angle to their end surfaces. On the sleeve 5 are mounted and compressed in the axial direction of the disk b, forming a flexible piston. Working cavities 7 are formed between the piston and the body of the hydraulic machine.

A volume displacement hydraulic machine operates as follows.

Under the action of the torque transmitted from the drive motor (for example, an electric motor), a spatially curved shaft 3 comes into rotation and discs 6, mounted on the sleeve 5,

begin to move relative to each other perpendicular to the axis of the internal cavity of the housing 3 so that their outer surfaces create a wave continuously running along the axis of the housing. In this case, the working cavities 7 periodically change their volume, and thus, the medium is sucked and pumped from the receiving part to the pressure part.

The circular design of the elements of the housing 1, bushings 5, disks 6 significantly improves the manufacturability of the design and, therefore, reduces production costs. Permanent compression of discs with flexible piston, parallel movement

they are relative to each other at all positions of the shaft due to the parallelism of the outer surfaces of the bushings 5, sitting on a spatially curved shaft 3, eliminate the disc discrepancy 6 and provide transverse tightness of the piston and thereby increase hydraulic efficiency compared to the prototype hydraulic machine.

The ability to select friction pairs with optimal insert loss 2 - disc 6,

disk 6 - bushings 5, and adjacent disks due to

the choice of their material depending on

properties of the pumped medium allow

to obtain a hydraulic machine with significantly lower friction losses than that of the prototype.

(56) Copyright certificate of the USSR No. 1832869, cl. F 04 C 5/00, 1987.

52004849

Claims (2)

1. A HYDRAULIC VOLUME EXTRACTION machine, comprising a housing with inlet and outlet nozzles located in the internal cavity of the working channel of the housing, a flexible piston in the form of a packet drawn from separate plates with holes with the possibility of forming a spatially curved the latter are made in the form of disks with eccentric holes, in which there are bushings with an angled central hole, made with the possibility of their landing on a spatially curved shaft, and the cavity of the working channel of the housing is made in the form of an oval, with the diameters of the disks and the inner semicircle working cavity , - g -. „, ..,.„, „. MISGI RA the channel in which the space-10 of the channel of the housing is installed is made equal to a veno curved shaft located B2. The hydraulic machine according to claim 1, characterized in bearings of the housing and connected to the shaft in that, in order to increase the technology of the drive motor, characterized in that. On the other hand, the casing is made in the form of two according to Г that, in order to increase the hydraulic cylinders with L-efficiency, by ensuring a constant piston tightness by calling the cavity of the working channel of oval to prevent divergence of plates, shape. oval the latter are made in the form of disks with eccentric holes, in which there are bushings with an angled central hole, made with the possibility of their landing on a spatially curved shaft, and the cavity of the working channel of the housing is made in the form of an oval, with the diameters of the disks and the inner semicircle of the working cavity . MISGI RA channel housing made equal 2. The hydraulic machine according to claim 1, characterized in FIG. AA (Ubemtseno) / disco. Fi2 2 Phage 3