SU1751427A1

SU1751427A1 - Centrifugal pump

Info

Publication number: SU1751427A1
Application number: SU904810210A
Authority: SU
Inventors: Иван Степанович Скуба
Priority date: 1990-04-04
Filing date: 1990-04-04
Publication date: 1992-07-30

Abstract

Использование: в насосах с устройствами дл отжима ротора при работе насоса в нерасчетных режимах. Сущность изобретени : насос содержит гидроп ту, включающую расположенный на валу 2 разгрузочный диск 3, закрепленную в корпусе 1 подушку 4 и аксиально- подвижное кольцо (К) 7. К 7 подпружинено относительно корпуса пружиной 9. Полость 8 у торца К 7 сообщена с областью всасывани насоса. На обращенных друг к другу поверхност х разгрузочного диска 3 и К 7 выполнены соответственно кольцева канавка 10-и радиальные пазы. При пуске насоса К 7 выполн ет функцию гидродинамического подшипника. 2 ил.Usage: in pumps with devices for spinning the rotor when the pump operates in off-design modes. SUMMARY OF THE INVENTION: The pump comprises a hydropuch including a discharge disk 3 mounted on shaft 2, a cushion 4 fixed in housing 1 and an axially movable ring (K) 7. K 7 is spring-loaded relative to the housing by spring 9. The cavity 8 at end K 7 communicates with the area pump suction. An annular groove with 10 and radial grooves is made on the surfaces of the discharge disk 3 and K 7 facing each other, respectively. When the pump is started up, K 7 performs the function of a hydrodynamic bearing. 2 Il.

Description

.Фиг, 2.Fig, 2

Claims

Claim

A centrifugal pump containing a casing, a hydrosail, including an unloading disk located on the shaft, and a pillow fixed in the casing, forming an end gap and an unloading chamber, spring-loaded · relative to the ak- casing. The sliding-sliding ring, the cavity at the end surface of which on the spring side is connected with the suction region of the pump, is distinguished by the fact that, in order to reduce the axial dimension and simplify the design, the axially movable ring is placed in the discharge chamber, and facing one another of the surfaces of the discharge disk and the axially movable ring, an annular groove and radial grooves are respectively made.