SU981689A1 - Centrifugal pump - Google Patents

Description

one

The invention relates to hydro-tire manufacturing and can be used in centrifugal pumps.

A centrifugal pump is known, which contains an impeller consisting of a drive disk with blades attached to it, in which the change in the characteristics of the pump is carried out by moving the blades}.

The disadvantage of this pump is the low efficiency, due to the significant overflow between the casing and the disk.

The closest in technical essence and the achieved result is a centrifugal pump, comprising a housing, an impeller mounted thereon on the shaft, whose drive disk is made up of a composite of the central and peripheral parts of the G23.

The disadvantage of this pump is the inability to control the energy characteristics of the pump.

The purpose of the invention is to control the head by changing the size of the outer diameter of the impeller.

This goal is achieved by the fact that the pump additionally contains an adjusting ring with grooves on its outer surface, mounted rotatably around the shaft, the peripheral part of the drive disk consists of sector elements having a shaped groove and ball bearing, and the central part of this disk is provided with bushings, hosted

ts in the slots of the sector elements, while ball bearings are placed in the grooves of the adjusting ring.

FIG. 1 shows a schematic of a centrifugal pump; FIG. one; in fig. 3 is a view B in FIG. 1.

Claims (2)

The centrifugal pump includes a housing 1 mounted on it on the shaft 2 of an impeller 3, the drive disk k of which is made of a composite of the center and peripheral parts 5 and 6, an adjusting ring 7 with grooves 8 on its outer surface E, which is rotatable around the shaft 2, the peripheral part 6 of the drive disk k consists of the sectoral elements Yu, which have a figured groove 11 and a ball bearing 12, and the central part 5 of this disk k is equipped with bushings 13 spaced in the grooves 11 of the sector elements 10. The ball bearings 12 are placed in kana 8 of the adjusting ring 7. fitted with a nut 1. The device operates as follows. The change in the centrifugal pump head is achieved by changing the diameter of the rim of the drive disk of the impeller 3. For this purpose, the nut H is loosened outside the housing 1 and the adjusting ring 7 rotates relative to the shaft 2. When the ring 7 is rotated, the pie elements 10 connected with ring 7 ball bearings 12 in a plane perpendicular to the axis of the pump. Changing the diametral size and preserving the shape of the drive disc is provided by the configuration of the shaped grooves 11. The use of the present invention eliminates disassembly during rework to change the head, extends tolerances to the main geometrical dimensions of the hydraulic wheel path, as a result of which the mass production of the pump is cheaper. Claims of the invention: A centrifugal pump comprising a housing mounted on it an impeller on a shaft, whose drive disk is made up of central and peripheral parts, characterized in that, in order to control the head by changing the size of the outer diameter of the impeller, the pump additionally contains an adjusting ring with grooves on its surface Noah, installed with the possibility of turning around the shaft, the peripheral part of the drive disk consists of sector elements that have a figured az and the ball joint, and the central portion of the disc is provided with bushings placed in the grooves of sector elements, wherein the ball bearings are placed in the grooves of the adjustment ring sources of information received note in the examination 1.Avtorskoe certificate USSR N 47037, cl. F 0 O 29/00, 193. 2. USSR author's certificate number 872792, cl. F o D 15/00, 1980.