CN107237890B - Sealing structure and encapsulating method under a kind of bad working environments - Google Patents

Sealing structure and encapsulating method under a kind of bad working environments Download PDF

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Publication number
CN107237890B
CN107237890B CN201710665516.1A CN201710665516A CN107237890B CN 107237890 B CN107237890 B CN 107237890B CN 201710665516 A CN201710665516 A CN 201710665516A CN 107237890 B CN107237890 B CN 107237890B
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China
Prior art keywords
sealing
peeling machine
folded ring
main shaft
ring
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CN201710665516.1A
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Chinese (zh)
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CN107237890A (en
Inventor
刘录锋
孙丽丽
解吉辉
杨晓东
雷超
段锦涛
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China National Heavy Machinery Research Institute Co Ltd
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China National Heavy Machinery Research Institute Co Ltd
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Priority to CN201710665516.1A priority Critical patent/CN107237890B/en
Publication of CN107237890A publication Critical patent/CN107237890A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/44Free-space packings
    • F16J15/447Labyrinth packings

Abstract

The present invention provides the sealing structures and encapsulating method under a kind of bad working environments, bearing including peeling machine main shaft and outside peeling machine main shaft further includes sealing folded ring, and the bearing inner surface is equipped with annular groove, described to seal folded ring outer circle in annular groove, inner circumferential is set on peeling machine main shaft;The bearing is equipped with multiple gas circuits being uniformly arranged in the circumferential direction, and the gas circuit and peeling machine main shaft are axially parallel, and the gas circuit is set to the folded ring of sealing and communicates close to peeling machine interior side and with annular groove.The tensioner for sealing folded this body structure of ring is utilized to play sealing function, multiple use has the characteristics of labyrinth sealing again, the reliability for improving folded ring sealing is combined with compressed air, therefore, it seals sufficiently stable, it works well, while the semicircle folded ring and be made into subdivision will be sealed, overcome the shortcomings that folded ring sealing installation is not easy.

Description

Sealing structure and encapsulating method under a kind of bad working environments
Technical field
The invention belongs to technical field of metallurgical equipment, and in particular to sealing structure and sealing side under a kind of bad working environments Method.
Background technique
Peeling machine is a kind of special purpose machine tool, for the processing to circle blank surface.The main shaft major axis diameter of peeling machine is big, if Standby outside cutting liquid measure is more and can splash to all directions, and operating condition is severe, strict control cutting fluid that cannot be seeped into equipment Otherwise portion can damage equipment.Conventional sealing ring is not able to satisfy that this diameter is big, requirements of bad working environments.
Major diameter sealing uses standard sometimes and folds ring sealing in metallurgical equipment, and folded ring sealing is that itself knot is utilized The tensioner of structure is multiple using having the characteristics of labyrinth sealing again to play sealing function, therefore, seals sufficiently stable, effect Fruit is good, is mainly used for the sealing such as bearing under the mal-conditions such as high temperature, corrosion, for the consumption for improving adverse circumstances to reduce high Oil mass and improvement bearing use condition, but there is the shortcomings that installation is not easy.
Summary of the invention
The purpose of the present invention is overcoming the above-mentioned problems in the prior art, provide reliable close under a kind of bad working environments Encapsulation method.
Technical solution provided by the invention is as follows:
A kind of sealing structure under bad working environments, the bearing including peeling machine main shaft and outside peeling machine main shaft also wrap The folded ring of sealing is included, the bearing inner surface is equipped with annular groove, and the folded ring outer circle of sealing is set in annular groove, and inner circumferential is set in stripping On skin owner's axis;
The bearing is equipped with multiple gas circuits being uniformly arranged in the circumferential direction, and the gas circuit and peeling machine main shaft are axially parallel, The gas circuit is set to the folded ring of sealing and communicates close to peeling machine interior side and with annular groove.
The folded ring of sealing is made of two semicircular rings.
It is described seal folded ring be biplate seal folded ring and be equipped with it is multiple, it is multiple to seal folded rings series connection and two neighboring sealing is folded The port of ring is staggered.
The gas circuit diameter is 6-8mm.
The gas circuit is evenly distributed 6-8.
The present invention also provides a kind of encapsulating method, using the sealing structure under bad working environments, by compressed air from gas circuit It is blown into and accommodates in the annular groove for sealing folded ring, and by annular groove outside the gap to peeling machine between peeling machine main shaft and bearing Portion, and these gaps are filled with, continuous is formed, cannot be introduced into the sundries outside peeling machine inside peeling machine, is realized Sealing.
The peeling machine major axis diameter is not more than 1300mm.
The beneficial effects of the present invention are:
Sealing is utilized for the host main shaft of peeling machine in sealing structure under this bad working environments provided by the invention For the tensioner of folded this body structure of ring to play sealing function, multiple use has the characteristics of labyrinth sealing and compressed air again In conjunction with the reliability for improving folded ring sealing, therefore, sealing is sufficiently stable, works well, while will seal folded ring and being made into subdivision Semicircle, overcome the shortcomings that sealing installation of folded ring is not easy.
It is described in further details below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
In figure: 1, sealing folded ring;2, gas circuit;3, peeling machine main shaft;4, bearing.
Specific embodiment
Embodiment 1:
In order to solve peeling machine in cutting, since cutting fluid is splashed to all directions, not only cause operating condition severe, but also The technical issues of cutting fluid can be seeped into inside equipment, damage to equipment.Present embodiments provide a kind of evil as shown in Figure 1 Sealing structure under bad operating condition, the bearing 4 including peeling machine main shaft 3 and outside peeling machine main shaft 3 further include sealing folded ring 1, 4 inner surface of bearing is equipped with annular groove, and described to seal folded 1 outer circle of ring in annular groove, inner circumferential is set in peeling machine main shaft 3 On;
The bearing 4 is equipped with multiple gas circuits 2 being uniformly arranged in the circumferential direction, and the gas circuit 2 is axial flat with peeling machine main shaft 3 Row, the gas circuit 2 are set to the folded ring 1 of sealing and communicate close to peeling machine interior side and with annular groove.
The principle of the invention: it seals folded 1 one side of ring and the medium sealed between main shaft and bearing 4 is avoided to flow out, on the other hand The reliability for improving folded ring sealing is combined using the tensioner and compressed air that seal folded 1 body structure of ring, is avoided external miscellaneous Matter enters.
The course of work:
Compressed air is blown into from gas circuit 2 to be accommodated in the annular groove for sealing folded ring 1, and by annular groove along need to seal two Gap between part is filled with to device external, and these gaps, since these air have pressure, will form lasting pressure The cutting fluid of outside is blown away, cannot be introduced into it inside equipment by power.
Sealing structure under this bad working environments provided in this embodiment is utilized close for the host main shaft of peeling machine The tensioner of folded 1 body structure of ring is sealed to play sealing function, compressed air combines the reliability for improving folded ring sealing, because This, sealing is sufficiently stable, works well.
Embodiment 2:
On the basis of embodiment 1, the sealing structure under a kind of bad working environments is present embodiments provided, it is described to seal folded ring 1 is made of two semicircular rings.
The semicircle folded ring 1 and be made into subdivision will be sealed, overcomes the shortcomings that folded ring sealing installation is not easy.
In the present embodiment, it is that biplate sealing folds ring and equipped with multiple, multiple folded series connection of rings 1 of sealing that ring 1 is folded in the sealing And the two neighboring port for sealing folded ring 1 is staggered.2 diameter of gas circuit is 6-8mm.The gas circuit 2 is evenly distributed 6-8.
The cardinal principle for sealing folded ring 1 is labyrinth seal, several are set up around main shaft and seals folded ring 1, seals folded ring 1 A series of throttle clearance and expansion cavity are formed between folded ring 1 with sealing, and make the medium sealed between main shaft and bearing 4 logical It generates throttle effect when crossing the gap in tortuous labyrinth and achievees the purpose that Drain Resistance.When leakage liquid stream flows in labyrinth, because of liquid It flows and generates friction, make flows decrease, flow reduces.Related with cross sectional shape with the length in channel in simple terms, runner is got over Length, ring gear top are sharper, and flow is smaller, and sealing effect is better, when being in addition circulated through labyrinth port, can receive because of inertia effects Contracting, the section of a fluid stream, which becomes smaller, can also generate sealing effect.
Embodiment 3:
On the basis of the above embodiments, a kind of encapsulating method is present embodiments provided, the sealing under bad working environments is used Compressed air is blown into from gas circuit 2 and accommodates in the annular groove for sealing folded ring 1 by structure, and by annular groove along 3 He of peeling machine main shaft Outside gap to peeling machine between bearing 4, and these gaps are filled with, form continuous, make miscellaneous outside peeling machine Object cannot be introduced into inside peeling machine, realize sealing.
3 diameter of peeling machine main shaft is not more than 1300mm.I.e. this method can be used for other operating conditions are severe, sealed diameter most The big occasion for arriving 1300mm.
In conclusion the sealing structure under this bad working environments provided by the invention, for the host main shaft of peeling machine, benefit With the tensioner for sealing folded 1 body structure of ring to play sealing function, multiple use has the characteristics of labyrinth sealing again, and Compressed air combines the reliability for improving folded ring sealing, and therefore, sealing is sufficiently stable, works well, while will seal folded ring 1 It is made into the semicircle of subdivision, overcomes the shortcomings that folded ring sealing installation is not easy.
The well-known components and common structure of component and the structure category industry that above embodiments do not describe in detail are common Means do not describe one by one here.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.

Claims (1)

1. a kind of encapsulating method, it is characterised in that: the sealing structure under the bad working environments that this method uses, including peeling machine main shaft (3), it is set to peeling machine main shaft (3) outer bearing (4) and seals folded ring (1), bearing (4) inner surface is equipped with annular groove, institute It states folded ring (1) outer circle of sealing to be set in annular groove, inner circumferential is set on peeling machine main shaft (3);
The bearing (4) is equipped with multiple gas circuits (2) being uniformly arranged in the circumferential direction, the gas circuit (2) and peeling machine main shaft (3) axis To parallel, the gas circuit (2), which is set to, to be sealed folded ring (1) close to peeling machine interior side and communicates with annular groove;
The sealing folded ring (1) is made of two semicircular rings;
It is that biplate seals folded ring and equipped with multiple, multiple sealings folded ring (1) series connection and two neighboring sealing that ring (1) is folded in the sealing The port of folded ring (1) is staggered;
Gas circuit (2) diameter is 6-8mm;
The gas circuit (2) is evenly distributed 6-8;
Compressed air is blown into from gas circuit (2) and accommodates in the annular groove for sealing folded ring (1) by this method, and by annular groove along peeling Outside gap to peeling machine between owner's axis (3) and bearing (4), and these gaps are filled with, form continuous, make to shell Sundries outside skin machine cannot be introduced into inside peeling machine, realize sealing;
Peeling machine main shaft (3) diameter is not more than 1300mm.
CN201710665516.1A 2017-08-07 2017-08-07 Sealing structure and encapsulating method under a kind of bad working environments Active CN107237890B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710665516.1A CN107237890B (en) 2017-08-07 2017-08-07 Sealing structure and encapsulating method under a kind of bad working environments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710665516.1A CN107237890B (en) 2017-08-07 2017-08-07 Sealing structure and encapsulating method under a kind of bad working environments

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CN107237890A CN107237890A (en) 2017-10-10
CN107237890B true CN107237890B (en) 2019-09-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200982412Y (en) * 2006-12-04 2007-11-28 中国南车集团株洲电力机车有限公司 Rolling stock spiral ring labyrinth type axle box seal structure
CN201187578Y (en) * 2008-05-06 2009-01-28 武汉钢铁(集团)公司 Opposite open type composite seal ring for coke heat performance reaction test furnace
CN201330851Y (en) * 2008-12-30 2009-10-21 洛阳轴研科技股份有限公司 Air sealing structure of electric main shaft

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3698724A (en) * 1969-11-12 1972-10-17 Commissariat Energie Atomique Sealing device
FR2765653B1 (en) * 1997-07-03 1999-08-20 Hispano Suiza Sa GAS CONTAINMENT DEVICE TEMPORARILY SUPPORTING HIGH PRESSURE
CN201103686Y (en) * 2007-09-11 2008-08-20 大连华根机械有限公司 Principal shaft sealing device
CN201982668U (en) * 2011-03-23 2011-09-21 刘森钢 Radial blowing device of high-speed motorized spindle
CN204140875U (en) * 2014-09-24 2015-02-04 日工(上海)工程机械有限公司 Concrete mixer axis seal apparatus
CN204921991U (en) * 2015-06-26 2015-12-30 成都一通密封有限公司 Two lamella formula carbocycles are sealed

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200982412Y (en) * 2006-12-04 2007-11-28 中国南车集团株洲电力机车有限公司 Rolling stock spiral ring labyrinth type axle box seal structure
CN201187578Y (en) * 2008-05-06 2009-01-28 武汉钢铁(集团)公司 Opposite open type composite seal ring for coke heat performance reaction test furnace
CN201330851Y (en) * 2008-12-30 2009-10-21 洛阳轴研科技股份有限公司 Air sealing structure of electric main shaft

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