CN105090509A

CN105090509A - Shaft seal

Info

Publication number: CN105090509A
Application number: CN201510436589.4A
Authority: CN
Inventors: 张兆贵
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-23
Filing date: 2015-07-23
Publication date: 2015-11-25

Abstract

A shaft seal comprises two groups of soft fillers, a shaft sleeve, two pushing rings, a spring, a gland, a casing and an oil filling port, wherein the spring presses the soft fillers on two sides of the spring tightly through two pushing rings, so that the shaft sleeve is stressed more uniformly, the abrasion is low, less consumption is caused, and the cost is lower; and besides, the spring can compensate lost pressure due to abrasion of the soft fillers on two sides of the spring automatically, so that the service life of the shaft seal is greatly prolonged, and the sealing effect is excellent.

Description

Shaft seal

Technical field

This technology belongs to motive sealing, and being applied to various pump, still, turbocompressor etc. needs in the machinery of sealing.

Background technique

Modern sealing mainly contains soft packing seal, mechanical seal, dry gas seals, pureed sealing etc., soft packing seal wherein with lantern ring for liquid seal adds a lantern ring for liquid seal in the middle of soft packing, be conducive to the uniform stressed of axle, axle sleeve like this, thus reduce wearing and tearing, extend sealing life, however, loss and expense are still larger.

Summary of the invention

In order to solve the problem existing for above-mentioned soft packing seal, the invention provides the encapsulation scheme that a kind of loss is little, expense is low.

The present invention's taked technological scheme of dealing with problems is: add shock mount and throw-out collar in Seal cage, spring press against the soft packing of both sides by the throw-out collar top at its two, such axle sleeve is stressed more even, wearing and tearing, loss is less, expense is lower, and spring can also the automatic makeup still pressure that loses due to wearing and tearing of both sides soft packing, sealing life is extended greatly, sealing effect is better, sealing accent gland press against outside soft packing, and spring upper shell has pouring orifice, and pouring orifice injects machine oil, machine oil has lubrication anti-attrition effect to soft packing, and axle has axle sleeve.

Accompanying drawing explanation

Fig. 1 is structure sectional view of the present invention, in figure: 1, soft packing, 2, axle sleeve, 3, throw-out collar, 4, spring, 5, throw-out collar, 6, soft packing, 7, gland, 8, housing, 9, pouring orifice.

Embodiment

It is spring 4 in the middle part of Seal cage, spring 4 two is throw-out collar 3 and 5 respectively, bottom Seal cage, inside spring 4, soft packing 1 is housed inside throw-out collar 3, outside spring 4, soft packing 6 is housed outside throw-out collar 5, gland 7 is had to press against outside soft packing 6, axle there is axle sleeve 2, spring 4 upper shell 8 has pouring orifice 9, pouring orifice 9 injects machine oil, when gland 7 compresses, spring 4 is compressed, the spring 4 compressed is by throw-out collar 3 and 5, press against soft packing 1 and 6, such axle sleeve 2 is more even by soft packing 1 and 6 pressure, simultaneously spring 4 automatic makeup still soft packing 1 and 6 because of the pressure lost that weares and teares.

Claims

1. shaft seal, comprise: two groups of soft packings, axle sleeve, two throw-out collars, spring, gland, housing, pouring orifices, it is characterized in that: in Seal cage, add shock mount and throw-out collar, spring press against the soft packing of both sides by two throw-out collar tops at its two, sealing accent gland press against outside soft packing, spring upper shell has pouring orifice, and axle has axle sleeve.