CN201407354Y

CN201407354Y - Improved mechanical seal structure

Info

Publication number: CN201407354Y
Application number: CN2009201191000U
Authority: CN
Inventors: 鲍瑞清
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-02-17
Anticipated expiration: 2019-04-30

Abstract

An improved mechanical seal structure comprises a stationary ring, a rotating ring, a spring and a spring seat, wherein, the rotating ring and the spring seat are connected by a telescoping connectingsleeve; the connecting sleeve is sheathed with the spring, which has two ends respectively propped against the rotating ring and the spring seat; an auxiliary seal ring is arranged outside the stationary ring; a plurality of oil storing apertures that are arrayed regularly are formed on the jointing sealing surface of the stationary ring or the rotating ring; in addition, a lubricant is arrangedin the apertures to lead an oil film to be kept between contact surfaces, so that the service life for mechanical seal can be effectively prolonged, and the maintenance cost can be lowered.

Description

A kind of structure-improved of mechanical seal

Technical field

The utility model belongs to the mechanical sealing technology field, the improvement of the closed mechanical seal of particularly a kind of spring.

Background technique

Mechanical seal is a kind of device that prevents that working fluid from leaking along running shaft, and it is called end face seal by one-tenth again, and existing mechanical seal has generally included stationary ring, rotating ring, elastic element and auxiliary seal ring.Its working principle is the purposes that two veneers utilizing stationary ring and rotating ring two to close relative to rubbing to rotate cooperate auxiliary seal ring to realize sealing, and the wearing and tearing between two veneers just compensate automatically by the pressure of elastic element.Elastic element commonly used is generally spring, and its structure is: the stationary ring relative fixed, and the one side of rotating ring is fitted with stationary ring, and its another side then supports with spring.During proper functioning, rotating ring rotates relatively, and the friction factor control between the veneer within the specific limits; But, because lack continuous lubrication between two veneers, friction factor between the described veneer exceeds prespecified range easily, and temperature is too high, spring is out of shape the situations such as compensatory pressure minimizing that come off or provide by twisting thereby then be easy to generate this moment, and at this moment leakage has just taken place.So mechanical seal belongs to a kind of easy wearing detail.

The model utility content

The purpose of this utility model is to provide a kind of structure-improved of mechanical seal, can effectively reduce the loss of mechanical seal, reduces the maintenance of machine cost.

For being real above-mentioned purpose, the utility model adopts following technological scheme:

A kind of structure-improved of mechanical seal, include stationary ring, rotating ring, spring, spring seat, connect with telescopic connecting sleeve between described rotating ring and the spring seat, described spring housing supports with rotating ring and spring seat respectively in connecting sleeve outside and its two ends, arranged outside one auxiliary seal ring of stationary ring is characterized in that: the applying sealing surface of described stationary ring or described rotating ring is provided with a plurality of regularly arranged oil storage apertures.

Be marked with lubricant oil in the oil storage aperture, can between stationary ring and rotating ring, form one deck oil film, make that the friction factor between rotating ring and the stationary ring is controlled within the normal range (NR), the heat that produces when reducing mechanical seal work.

The utility model can be simple in structure, and effectively the operating life of prolonged mechanical sealing reduces maintenance cost.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the arrangement schematic representation of oil storage aperture described in the utility model.

Embodiment

The structure-improved of a kind of mechanical seal as depicted in figs. 1 and 2, include stationary ring 1, rotating ring 2, spring 3, spring seat 4, connect with telescopic connecting sleeve between rotating ring 2 and the spring seat 4, spring 3 two ends support with rotating ring 2 and spring seat 4 respectively, and auxiliary seal ring 5 can prevent effectively that working fluid is from stationary ring outside seepage.

As preferably, the applying sealing surface of stationary ring 1 is provided with a plurality of regularly arranged oil storage apertures 11, and the center of these oil storage apertures 11 is that the center of circle is arranged in two concentric circles with the center of stationary ring 1.

The oil storage aperture is marked with lubricant oil for 11 li, can form one deck oil film between stationary ring 1 and rotating ring 2, makes that the friction factor between stationary ring 1 and the rotating ring 2 is controlled within the normal range (NR), the heat that produces when reducing mechanical seal work.

Claims

1, a kind of structure-improved of mechanical seal, include stationary ring, rotating ring, spring, spring seat, connect with telescopic connecting sleeve between described rotating ring and the spring seat, described spring housing supports with rotating ring and spring seat respectively in connecting sleeve outside and its two ends, the arranged outside of stationary ring has auxiliary seal ring, it is characterized in that: the applying sealing surface of described stationary ring or described rotating ring is provided with a plurality of regularly arranged oil storage apertures.