SU151535A1 - Mechanical shaft seal - Google Patents

Description

Mechanical shaft seals are known, including two contact rings and sylphs; The first of the rings is rigidly fixed on the shaft, and the second is loosely mounted, and is pressed against the first by a spring.

The mechanical seal described here differs from those known in that it is provided with a rolling bearing, such as a roller bearing, placed on the shaft, on the outer ring of which there is a sleeve rigidly connected with a freely mounted ring and bellows. Such an implementation of the described mechanical seal allows to increase its reliability and service life by eliminating the distortions of a freely installed ring.

The drawing shows the described mechanical seal with a partial cut.

The ring 2 is rigidly fixed on the shaft / and the ring 3 is pressed loosely against the first spring 4, the spring 4 rests on one end of the figure nut 5, and the other end of the figure 6, screwed into the cover 7, which is fixed to the corrus through the gasket 8 9 with HELP screws 10.

A bearing 11 is placed on the shaft /, the sleeve 13 is rigidly fixed on the outer ring 12. The outer ring 12 can move freely relative to the inner ring 14 of the bearing, which is pressed onto the shaft 1 and fixed by a nut 15. The sleeve 13 is rigidly connected to the shaft freely mounted on / ring. 5 and with sylph. 16.

The latch 17, made at the same time: with a sleeve / 5 and included with large gaps in the groove of the cover. 7, prevents turning the sleeve relative to the housing 9.

In the event of the shaft 1 tilting relative to the housing 9, the seal rigidly connected to the shaft freely moves with it;