CN209510713U - Labyrinth seal system - Google Patents

Labyrinth seal system Download PDF

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Publication number
CN209510713U
CN209510713U CN201920003321.5U CN201920003321U CN209510713U CN 209510713 U CN209510713 U CN 209510713U CN 201920003321 U CN201920003321 U CN 201920003321U CN 209510713 U CN209510713 U CN 209510713U
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China
Prior art keywords
bearing
seal system
labyrinth
labyrinth seal
oil
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CN201920003321.5U
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Chinese (zh)
Inventor
邹礼生
邓晓明
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Andritz China Ltd
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Andritz China Ltd
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Abstract

The utility model relates to a kind of labyrinth seal systems, for from the axially external bearing being sealingly mounted in a rotary shaft, the labyrinth seal system includes: dynamic labyrinth ring, which is rotated with mode of the fixed and arranged in the rotary shaft with the rotary shaft;Quiet labyrinth ring, the quiet labyrinth ring itself is fixedly arranged, and it is suitable for that the maze trough that bearing lubricant can slow transit through is collectively formed with the dynamic labyrinth ring, wherein, the dynamic labyrinth ring and the quiet labyrinth ring also cross at least two oil back chambers jointly, and the oil back chamber is connected respectively with the maze trough and position is arranged before and after successive in the axial direction of the rotation axis;Wherein, the bottom of each oil back chamber is equipped with the first oil return hole, which is connected with oil chamber, so that the bearing lubricant for enabling the oil back chamber to collect flows back into the oil chamber.

Description

Labyrinth seal system
Technical field
The utility model relates to centrifugal pump bearing technical field of sealing technology, and in particular to a kind of labyrinth seal system.
Background technique
Bearing seal is the contact of existing horizontal centrifugal pump bearing in order to prevent the lubricating oil of bearing from spilling from grease chamber Formula sealing e.g. outside framework oil seal, non-contacting seal is, for example, simple labyrinth seal.But either contact seal is still Non-contact seals cannot all play good sealing effect during long-time service.
There are following technological deficiencies in contact seal: contact is sealed mainly by sealing element (outside framework oil seal) compression axis, At runtime, axis rotates, and sealing element (outside framework oil seal) is stationary, in this way, sealing element and axis can always exist friction, uses After a certain period of time, it necessarily will appear abrasion, under this situation, sealing element no longer compression axis just will appear leakage.
In non-contacting seal, such as simple labyrinth seal, only simple two packing ring combinations together, and There is no oil back chamber, may be only available for oil mass and leak considerably less operating condition, moreover, being also easy in the long-term use so that extraneous Dust pollutes lubricating oil.
Summary of the invention
In view of the foregoing drawbacks, close to solve conventional contacts the purpose of the utility model is to provide a kind of labyrinth seal system The problem of sealing wearing part, and simple labyrinth seal adaptability it is narrow the problem of.
The labyrinth seal system of the utility model, for from the axially external bearing being sealingly mounted in a rotary shaft, The labyrinth seal system includes: dynamic labyrinth ring, and the dynamic labyrinth ring is with mode of the fixed and arranged in the rotary shaft with described Rotary shaft rotation;Quiet labyrinth ring, the quiet labyrinth ring itself are fixedly arranged, and are suitable for that bearing is collectively formed with the dynamic labyrinth ring The maze trough that lubricant can slow transit through, wherein the dynamic labyrinth ring and the quiet labyrinth ring also cross at least two times jointly Oil pocket, the oil back chamber is connected respectively with the maze trough and position cloth before and after successive in the axial direction of the rotation axis It sets;Wherein, the bottom of each oil back chamber is equipped with the first oil return hole, which is connected with oil chamber, thus The bearing lubricant for enabling the oil back chamber to collect flows back into the oil chamber.
A kind of preferred implementing form of labyrinth seal system according to the present utility model further includes annular oil baffle, the ring Shape oil baffle is fitted tightly on the sealed sides axial end face of the bearing outer ring of the bearing, and center opening is sized to There are annular gaps with the rotary shaft, also, the annular oil baffle in radius between the bearing outer ring and inner ring of the bearing Between position there is the bending to the direction far from the bearing so that described in the annular oil baffle extends to radially There are axial gap between the bearing inner race when in the range of bearing inner race, the annular gap and the axial gap are total With the access formed suitable for bearing lubricant flowing.
A kind of preferred implementing form of labyrinth seal system according to the present utility model further includes being fixedly arranged in the rotation Cone of revolution in shaft, the cone of revolution are gradually radially extended out from the circumferential bearing in the dynamic labyrinth, are dimensioned to Suitable for being got rid of lubricant disposed thereon under the influence of centrifugal force to the annular oil baffle.Principle is just as rotary opening Rainwater is the same along throwing away from umbrella when umbrella.
Preferably, the cone of revolution is advanced optimized, makes to have on the cone of revolution suitable for promoting bearing profit The helix structure that lubrication prescription is flowed to the bearing side.
In the specific design structure of the cone of revolution, the cone of revolution can be designed as straight circular conical surface or hyperbolic Face.
A kind of preferred implementing form of labyrinth seal system according to the present utility model, in the bearing and the dynamic labyrinth The bottom in the space between ring is disposed with the second oil return hole, which is connected with oil chamber, to make collected Bearing lubricant can flow back into the oil chamber.
A kind of preferred implementing form of labyrinth seal system according to the present utility model, the labyrinth seal system further include Dust protection rubber circle, which is fixed in the rotary shaft with one end and the other end is against the separate of the quiet labyrinth ring The mode of that side of the bearing realizes the sealing of the bearing lubricant for escaping from the tail end of the maze trough.
Different technical characteristics can also be integrated in one by the design philosophy of labyrinth seal system according to the present utility model In a component, to reduce the quantity of components, be conducive to the subsequent design of labyrinth seal system, such as reduce the tired of processing and manufacturing Count error, optimization assembly technology etc..
Preferably, the cone of revolution is the integral structure stretched out from the dynamic labyrinth ring.
Preferably, the dynamic labyrinth ring is arranged into a single integrated structure with the rotary shaft.
Preferably, the bearing gland setting of the quiet labyrinth ring and the bearing is into a single integrated structure.
A kind of preferred implementing form of labyrinth seal system according to the present utility model, the cone of revolution are moved with described The separate part that labyrinth ring is fixedly connected can carry out personalized designs to the part.
A kind of preferred implementing form of labyrinth seal system according to the present utility model, the number of the oil back chamber are lucky Two.
Since the labyrinth seal system of the utility model has good sealing effect, in above-mentioned various technical sides In case, the bearing can be thrust bearing.The labyrinth seal system of the utility model is in particular in the need of thrust bearing Design is sought, because leaving the lubricant of thrust bearing by the power of bearing axial direction and at this compared with other types of bearing There is more obvious component motion, conventional seals not can effectively prevent leakage on direction.And the labyrinth seal of the utility model The design of the oil baffle of system, more oil back chambers, cone of revolution is all obviously to address that need proposition.
The different embodiments of the labyrinth seal system of the utility model are enumerated above, in general, encapsulation scheme is From bearing lateral profile at several barrier, the outflow of lubricating oil is hindered step by step, so that lubricating oil is in transmission system In both play the role of lubrication, further through continuous circulation, reach the technical effect of cooling heat dissipation, wherein pass through setting gear oil Plate is largely blocked the lubricating oil sprayed due to the presence of axial force, and forms first of outpost of lubricating oil, is passed through The structure for carrying out cone of revolution to dynamic sealing is improved, and by the effect of centrifugal force, most of lubricating oil of outflow is thrown away, is formed The second outpost of lubricating oil is also provided with maze trough in the utility model, and the frictional resistance effect of fluid is utilized, and prevents lubricating oil Further outflow, form the third road outpost of lubricating oil;The setting of multiple oil back chambers can both delay the discharge of lubricating oil, Lubricating oil in oil back chamber can also be imported into oil chamber in time, form the 4th and the 5th outpost of lubricating oil, separately Outside, the dust protection rubber circle on the outside of labyrinth seal system, can prevent the dust in air from entering inside equipment, ensure that lubricating oil With the cleaning of transmission parts.
Detailed description of the invention
The labyrinth seal system that Fig. 1 illustrates the utility model is applied to the assembly structure figure of drive apparatus;
Fig. 2 illustrates the partial enlarged view of the labyrinth seal system of the utility model;
Fig. 3 illustrates the quiet labyrinth ring of the labyrinth seal system of the utility model and bearing gland be arranged it is into a single integrated structure Form of implementation.
Specific embodiment
The labyrinth seal system of the utility model is described in detail with reference to the accompanying drawing, it should be noted that specific Embodiment should not be understood as limiting the present invention.
The labyrinth seal system that Fig. 1 illustrates the utility model is applied to the assembly structure figure of drive apparatus, and Fig. 2 is illustrated The partial enlarged view of the labyrinth seal system of the utility model, as shown in Figure 1 and Figure 2, the labyrinth seal system of the utility model 300, for from the axially external bearing 302 being sealingly mounted in a rotary shaft 301, labyrinth seal system 300 to include: dynamic Labyrinth ring 401, the dynamic labyrinth ring by fixed and arranged on the rotary shaft in a manner of rotate with rotary shaft 301;Quiet labyrinth ring 402, should Quiet labyrinth ring itself is fixedly arranged, and is suitable for that the labyrinth that bearing lubricant can slow transit through is collectively formed with dynamic labyrinth ring 401 Slot, wherein dynamic labyrinth ring 401 and quiet labyrinth ring 402 also cross at least two oil back chambers 403 jointly, oil back chamber 403 respectively with fan Palace slot is connected and position is arranged before and after successive in the axial direction of rotary shaft 301;Wherein, the bottom of each oil back chamber 403 is set There is the first oil return hole 404, which is connected with oil chamber 303, thus the bearing for collecting oil back chamber 403 Lubricant can flow back into the oil chamber 303.
The gap of dynamic labyrinth ring 401 and quiet labyrinth ring 402 is c, and using the frictional resistance effect of fluid, gap c can play resistance Hinder the effect that lubricating oil passes through.
The labyrinth seal system of the utility model further includes annular oil baffle 405, which is fitted tightly over axis It holds on the sealed sides axial end face of 302 bearing outer ring, and center opening is sized to that there are between annular with rotary shaft 301 Gap b, also, position of the annular oil baffle between bearing outer ring and inner ring of the radius between the bearing has to far from institute The bending in the direction of bearing is stated, so that when the annular oil baffle is extended to radially in the range of the bearing inner race and institute It states between bearing inner race there are axial gap, annular gap b and axial gap are collectively formed suitable for the logical of bearing lubricant flowing Road.
The lubricating oil sprayed on the outside of to bearing, is first subjected to the blocking of annular oil baffle 405, by the way that annular oil baffle is arranged 405, stop most lubricating oil directly to spray, this results in first of outposts of lubricating oil.
The labyrinth seal system of the utility model further includes the cone of revolution 406 being fixedly arranged in rotary shaft 301, this time Turn the driven labyrinth ring 401 of the conical surface 406 to extend out to bearing 302 is gradually radial, the angle of cone of revolution and horizontal direction is a, size It is designed to be suitable and gets rid of lubricant disposed thereon to annular oil baffle 405 under the influence of centrifugal force.In labyrinth seal system In the preferred embodiment of system, the spiral shell for being suitable for that bearing lubricant is promoted to flow to the bearing side is can be set in cone of revolution 406 Spiral line structure.Cone of revolution is also designed to straight circular conical surface or hyperboloid.
In short, the purpose of setting cone of revolution is that lubricating oil is promoted to be thrown on the outside of oil baffle.In bearing 302 and move The bottom in the space between labyrinth ring 401 arranges that the second oil return hole, second oil return hole are connected with oil chamber, thus make because It can be flowed back into the oil chamber by the bearing lubricant for blocking and being collected on the outside of oil baffle.This forms the second of lubricating oil Road outpost makes it possible to reduce by the oil mass of maze trough.
The labyrinth seal system of the utility model further includes dust protection rubber circle 407, and one end of the dust protection rubber circle 407 is solid It is scheduled in rotary shaft 301, the other end is realized against the separate bearing end of quiet labyrinth ring 402 for escaping from the tail end of maze trough Bearing lubricant sealing, dust protection rubber circle 407 is last one of outpost of labyrinth seal system, and main function is to prevent sky Dust in gas enters oil pocket.
Several specific embodiments that the part with different role is integrated into a part are shown below, reduce fan The amount of parts of palace sealing system, is conducive to the subsequent design of labyrinth seal system, such as reduces the accumulative mistake of processing and manufacturing Difference, optimization assembly technology etc..For example, single part can be set by cone of revolution 406 and dynamic labyrinth ring 401, bore revolution The side of the driven labyrinth ring 401 in face 406 stretches out.Dynamic labyrinth ring 401 can also be arranged with rotary shaft 301 it is into a single integrated structure, The subsequent installation step that can be omitted dynamic labyrinth ring 401 and rotary shaft 301.
Fig. 3 illustrates the quiet labyrinth ring of the labyrinth seal system of the utility model and bearing gland be arranged it is into a single integrated structure Form of implementation, as shown in figure 3, the bearing gland 501 of quiet labyrinth ring 402 and bearing 302 be arranged it is into a single integrated structure, it is whole as Flange arrangement facilitates design and processing.
It, can be with for the components to play a key effect in the labyrinth seal system of the utility model, such as cone of revolution It is individually designed, to reach good technical effect.
A kind of preferred implementing form of labyrinth seal system according to the present utility model, the number of oil back chamber 403 are lucky Two, test proves, the setting of two oil back chambers can play good sealing effect, meet general drive apparatus to close The requirement of envelope system.
Since the labyrinth seal system of the utility model has good sealing effect, in above-mentioned various technical sides In case, bearing 302 can be thrust bearing.
The preferred embodiment of the utility model is described above, but the spirit and scope of the utility model are not limited to here Disclosed particular content.Those skilled in the art can it is according to the present utility model introduction and make more embodiments and Using these embodiments and application are all in the spirit and scope of the utility model.The spirit and scope of the utility model are not It is limited, and is defined by the claims by specific embodiment.
Reference signs list
300 labyrinth seal systems
301 rotary shafts
302 bearings
303 oil chambers
401 dynamic labyrinth rings
402 quiet labyrinth rings
403 oil back chambers
404 first oil return holes
405 annular oil baffles
406 cones of revolution
407 dust protection rubber circles
501 bearing glands

Claims (13)

1. a kind of labyrinth seal system (300), for from the axially external bearing being sealingly mounted on a rotary shaft (301) (302), which is characterized in that the labyrinth seal system (300) includes:
Dynamic labyrinth ring (401), dynamic labyrinth ring (401) are with mode of the fixed and arranged on the rotary shaft (301) with the rotation Shaft (301) rotation;
Quiet labyrinth ring (402), the quiet labyrinth ring (402) are fixedly arranged in itself, and are suitable for common with the dynamic labyrinth ring (401) The maze trough that bearing lubricant can slow transit through is formed,
Wherein, the dynamic labyrinth ring (401) and the quiet labyrinth ring (402) also cross at least two oil back chambers (403), institute jointly State that oil back chamber (403) is connected with the maze trough respectively and position is before and after successive in the axial direction of the rotary shaft (301) Arrangement;
Wherein, the bottom of each oil back chamber (403) is equipped with the first oil return hole (404), first oil return hole (404) and lubrication Grease chamber (303) is connected, so that the bearing lubricant for enabling the oil back chamber (403) to collect flows back into the oil chamber (303) in.
2. labyrinth seal system according to claim 1, which is characterized in that the labyrinth seal system (300) further includes Annular oil baffle (405), the annular oil baffle (405) are fitted tightly over the sealed sides axial end face of the bearing outer ring of the bearing On, and center opening is sized to that there are annular gaps with the rotary shaft, also, the annular oil baffle (405) is half Position of the diameter between the bearing outer ring and inner ring of the bearing (302) has to the direction far from the bearing (302) Bending so that when the annular oil baffle (405) is extended to radially in the range of the bearing inner races of the bearing (302) and There are axial gap, the annular gap and the axial gaps to be collectively formed suitable for bearing lubricant between the bearing inner race The access of flowing.
3. labyrinth seal system according to claim 2, which is characterized in that the labyrinth seal system (300) further includes The cone of revolution (406) being fixedly arranged in the rotary shaft, the cone of revolution (406) is from the dynamic labyrinth ring (401) to institute Stating bearing (302), gradually radial direction extends out, and is sized under the influence of centrifugal force get rid of lubricant disposed thereon To the annular oil baffle (405).
4. labyrinth seal system according to claim 1 or 3, which is characterized in that in the bearing (302) and the dynamic fan The bottom in the space between Gong Huan (401) is disposed with the second oil return hole, which is connected with oil chamber (303), To enable collected bearing lubricant to flow back into the oil chamber (303).
5. labyrinth seal system according to any one of claim 1 to 3, which is characterized in that the labyrinth seal system It (300) further include dust protection rubber circle (407), which is fixed on the rotary shaft (301) and another with one end The mode of that side of the one end against the quiet labyrinth ring (402) far from the bearing (302) is realized for from the maze trough Tail end evolution bearing lubricant sealing.
6. labyrinth seal system according to claim 3, which is characterized in that have on the cone of revolution (406) and be suitable for The helix structure for promoting bearing lubricant to flow to the bearing side.
7. labyrinth seal system according to claim 3, which is characterized in that the cone of revolution (406) is straight circular conical surface Or hyperboloid.
8. labyrinth seal system according to claim 3, which is characterized in that the cone of revolution (406) is from described dynamic The integral structure that labyrinth ring stretches out.
9. labyrinth seal system according to claim 3, which is characterized in that the cone of revolution (406) is moved with described The separate part that labyrinth ring (401) is fixedly connected.
10. labyrinth seal system according to any one of claim 1 to 3, which is characterized in that the oil back chamber (403) Number be lucky two.
11. labyrinth seal system according to any one of claim 1 to 3, which is characterized in that the dynamic labyrinth ring (401) it is arranged with the rotary shaft (301) into a single integrated structure.
12. labyrinth seal system according to any one of claim 1 to 3, which is characterized in that the quiet labyrinth ring (402) it is arranged with the bearing gland (501) of the bearing (302) into a single integrated structure.
13. labyrinth seal system according to any one of claim 1 to 3, which is characterized in that the bearing (302) is Thrust bearing.
CN201920003321.5U 2019-01-02 2019-01-02 Labyrinth seal system Active CN209510713U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920003321.5U CN209510713U (en) 2019-01-02 2019-01-02 Labyrinth seal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920003321.5U CN209510713U (en) 2019-01-02 2019-01-02 Labyrinth seal system

Publications (1)

Publication Number Publication Date
CN209510713U true CN209510713U (en) 2019-10-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538520A (en) * 2019-01-02 2019-03-29 安德里茨(中国)有限公司 Labyrinth seal system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109538520A (en) * 2019-01-02 2019-03-29 安德里茨(中国)有限公司 Labyrinth seal system

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