SU437845A1 - Two-rotor volumetric pump podoynitsyh - Google Patents

Description

one

The invention relates to hydraulic machines and can be used, for example, during laboratory work.

A two-rotor Podoinitsiny volumetric pump with a displacer is known, which contains two working chambers with displaced displacement volumes.

In order to simplify the design of the device, the displacer is made in the form of a tape with ends fixed in the rotors for alternately winding it onto one or another rotor communicated with the drive, which is sealed at the entrance to each working chamber.

FIG. 1 schematically shows the proposed pump, a general view; in fig. 2 shows sections along A-A and B-B in FIG. one.

The pump includes a housing 1 with two cylindrical chambers connected by a slot. The chambers are side-closed with covers 2. There are bearings in the grooves of the covers, in which shafts-rotors 3 are mounted. On the rotors there is an extrusion element 4 wound, made of a steel precision tape with rounded edges, the length of which is chosen so that one chamber, 2-3 turns remain on the shaft in the other chamber. A box 5 is installed in the through nest in the housing between the chambers. The sealing of the element 4 in the box is achieved by means of a plate package.

consisting of metal plates 6 and elastic plates 7 made, for example, of rubber. The package of sealing striping is preliminarily performed in thickness with some allowance relative to the length of the box. This achieves the subsequent compression of the elastic plates when the box is pressed into the housing. The chambers are equipped with two nozzles, one of which is intended for the admission of the hydraulic medium, the second - for release. The shaft is sealed in the hubs of the covers by a multi-compound chevron rubber-fabric set 8. The pump can be either manual or mechanical reversible

5 drive.

The chamber, And | 3 of which the displacing element is wound, is filled with a hydraulic medium. When the shaft-rotor rotates, a ribbon is wound on it. The volume of the chamber is reduced, and the hydraulic fluid is displaced into the pipeline. In another chamber, the tape is wound off a shaft-rotor. The volume of the chamber increases and it is filled with a hydraulic medium. After the chamber is completely filled with tape, the drive is reversed, and the second chamber starts working as an injection.

Subject invention

A two-rotor positive displacement pump with 30 L, containing two working chambers with displaceable out-of-phase working volumes, characterized in that, in order to simplify the device, the propellant is made in the form of a tape with ends fixed in the rotors for alternating winding

one or another rotor communicated with the drive, sealed at the entrance to each working chamber.

Priority calculated from 08.02.71.

FIG. 2