CN1058835A

CN1058835A - High-speed curved road machinery seal method and device

Info

Publication number: CN1058835A
Application number: CN 90106642
Authority: CN
Inventors: 丁崇光; 窦英元
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-07
Filing date: 1990-08-07
Publication date: 1992-02-19

Abstract

The present invention relates to a kind of high speed shaft sealing, it is to be made of guide ring and/or transition ring that stationary ring on the housing and the rotating ring on the main shaft reach therebetween, sealing has realized low friction score and the low leakage under the high speed conditions of main shaft, and technology is simple, reliable operation, cost are low, need not keep in repair.

Description

High-speed curved road machinery seal method and device

The present invention relates to a kind of shaft sealing, specifically a kind of method and seal arrangement of high-speed curved road sealing.

Sealing is widely used in each technical fields such as chemical industry, medicine, machinery, waterpower, Aero-Space, has the base of multiple sealing to manage and mode at present, still hangs down to leak, seal at a high speed and also do not realize the engineering application.

USA in recent years has spent the magnet fluid sealing and the hydrodynamic seal of a large amount of people's dead-wood power research, though reaching predetermined requirement aspect friction factor and the leakage rate, but because sealing implements the condition harshness, the processing technology complexity does not reach practical state, very limited as the magnet fluid sealing bearing capacity, maximum can only be 5 gauge pressures, and magnet fluid sealing requires very high to magnetic fluid, now only develop a few, therefore, above-mentioned sealing is promoted the use of and is also had many problems.

The object of the present invention is to provide a kind of high-speed curved road machinery seal method and device that has overcome above-mentioned defective, adopt that mechanical seal, technology are simple, reliable operation, friction factor is low, leakage rate is little, and cost is low.

High-speed curved road machinery seal method of the present invention be adopt the rotating ring is connected with main shaft and with stationary ring that housing is connected between the assembling guide ring realize that guide ring rotates with the rotating speed less than spindle speed, each interannular formation seals.

High-speed curved road machinery seal device of the present invention has rotating ring that is connected with main shaft and the stationary ring that is connected with housing, and is assemblied in the guide ring between rotating ring and the stationary ring, constitutes seal arrangement between each ring.

In conjunction with the accompanying drawings function of the present invention and structure are described further below by embodiment, following embodiment is used for just that the present invention will be described, does not limit the present invention, and substituting of any those skilled in the art technique known all allows;

Fig. 1 is the axle cross section view of one embodiment of the invention;

Fig. 2 is the axle cross section view of another embodiment of the present invention.

In Fig. 1, main shaft 13 stretches into housing 14 by sealing gland 11 central bore on housing 14 tops, stationary ring 1 is fixedly mounted on the sealing gland 11, and form static seal by stationary ring seal ring 10 betweens, spring seat 5 is fixed on the main shaft 13 by Cock screw 6, throw-out collar 8 is by driving pin 7 and spring seat 5 interlocks, and push throw-out collar 8 to end cover 11 by spring 4, rotating ring 2 is by transmission screw 3 and throw-out collar 8 interlocks, and pushed decide to ring 1 by throw-out collar 8 by spring 4, seal ring of moving ring 9 forms static seal between rotating ring 1 and main shaft 13, spring seat 5 is by driving pin 7, throw-out collar 8, transmission screw 6 drives rotating ring 2 and rotates with main shaft 13, encircle surely 2 with stationary ring 1 on respectively have the groove that cooperates with guide ring 12, be equipped with a guide ring 12 therebetween, when work, guide ring 12 is to rotate with main shaft 13 different rotating speeds, be beneficial to the foundation of sealing state, obtained a centrifugal force simultaneously, this centrifugal force has increased a resistance to inner flow seal, guide ring 12 and stationary ring 1 form labyrinth sealing between the rotating ring 2 simultaneously.

In Fig. 2, the end of housing 14 is fixed with spring seat 5, main shaft 13 stretches into housing 14 from the centre of spring seat 5, rotating ring 2 is fixedlyed connected with main shaft 13 by transmission screw 17, seal ring of moving ring 9 forms static seal between rotating ring 2 and main shaft 13, spring 4 on the spring seat 5 is pushed stationary ring to rotating ring 2, stationary ring seal ring 10 is the telogenesis static seal between spring seat 5 and stationary ring 1, stationary ring 2 can not be rotated by 6 restrictions of the Cock screw on the spring seat 5, transition ring 15 freely is housed between stationary ring 1 and rotating ring 2, at stationary ring 1, have the groove that cooperates with guide ring 12 on transition ring 15 and the rotating ring 2, a guide ring 12 is housed in the groove between stationary ring 1 and transition ring 15, in the groove of 2 of transition ring 15 and rotating rings another guide ring 12 is housed, above-mentioned each ring is pushed to be close to together by spring 4.When work, transition ring 15 is with the rotating speed rotation different with main shaft 13, the guide ring 12 that stationary ring 1 and transition ring are 15 is to be lower than the rotating speed rotation of transition ring 15, the guide ring 12 that rotating ring 2 and transition ring are 15 is to be lower than the rotating speed of main shaft 13, be higher than the rotating speed rotation of transition ring 15, thereby the relative linear velocity of each interannular is reduced relatively, be beneficial to the foundation of sealing state, simultaneously, the rotation of guide ring has obtained a centrifugal force, this centrifugal force has increased a resistance to inner flow seal, in addition, guide ring 12 is in rotating

ring

2 and 15 of transition ring and transition ring 15 and 1 formation of stationary ring labyrinth sealing.

Among the present invention, because guide ring 12 and/or transition ring 15(embodiment 2) setting, reduced the relative linear velocity between each motive sealing face, simultaneously, because guide ring 12 and/or transition ring 15 are the free floating of floating state in the course of the work, thereby allow to realize under the high speed rotating condition at main shaft 13 high-speed curved road machinery seal of low coefficient of friction and low leakage, particularly embodiment 2 allows main shaft 13 to realize sealing under high rotating speed.

In the present invention, between rotating ring 2 and the stationary ring 1 or can also dispose the guide ring 12 of a plurality of different-diameters between stationary ring 1 and transition ring 15 and rotating ring 2 and the transition ring 15; A plurality of transition ring 15 also can be set between rotating ring 2 and stationary ring 1, and the guide ring of one or more different-diameters is set between each adjacent transition ring.

Claims

1, a kind of high-speed curved road machinery seal device has rotating ring that is connected with main shaft and the stationary ring that is connected with housing, it is characterized in that: have the groove that cooperates with guide ring on said rotating ring and the stationary ring, dispose one or more guide rings therebetween.

2, according to the said device of claim 1, it is characterized in that between rotating ring and stationary ring, being provided with one or more transition ring, and between rotating ring and transition ring, stationary ring and transition and adjacent transition ring the one or more guide rings of configuration.

3,, it is characterized in that this device also has the spring that mounts elastically, rotating ring, transition ring and stationary ring are pushed to be close to together according to claim 1 or 2 said devices.

4, a kind of bent road of adjustment machinery decryption method that uses claim 1,2 or 3 said devices to realize.