CN101338818A

CN101338818A - Film bearing seal device

Info

Publication number: CN101338818A
Application number: CNA2008100121316A
Authority: CN
Inventors: 王庚福
Original assignee: Individual
Current assignee: Tieling Five Star Sealing Research Institute Co ltd
Priority date: 2008-07-04
Filing date: 2008-07-04
Publication date: 2009-01-07
Anticipated expiration: 2028-07-04
Also published as: CN101338818B

Abstract

The present invention relates to an oil film bearing sealing unit, which comprises a neck sealing part and a rigid annular sealing end plate. The essential technical points of the oil film bearing sealing unit are as follows: the neck sealing part comprises an annular sealing body with a slot, and a sealing part plugged in the slot; wherein, the sealing part is arranged between the rigid annular sealing end plate and the annular sealing body and contacted with a sealing surface; the extended part of the annular sealing body, which is on the same side as the sealing part is, is an adsorption neck; the end of the adsorption neck is connected with a secondary water-sealing lip, a water-sealing crown and a primary water-sealing lip; the secondary water-sealing lip is contacted with the concave surface of a roll neck; the primary water-sealing lip is contacted with a squeezing end surface; the extended part of the annular sealing body, which is not on the same side as the sealing part is, is a primary oil-sealing lip, is contacted with the concave surface of the roll neck; the annular sealing body is also connected with an oil-throwing lip. The axial, radial and bi-directional end surfaces of the oil film bearing sealing unit are sealed, and as a result, not only water is effectively sealed, but also friction resistance is less. The sealing part has a long service life and can be independently replaced, and therefore the maintenance cost is reduced. The adaptability to axial mounting dimension errors is improved, and the affection of axial float is also reduced during operation.

Description

Film bearing seal device

Technical field

The invention belongs to the associated sealing arrangement for bearings technical field, specifically a kind of mainly be applicable to axial float between the 5-10mm, axial all size errors are at the film bearing seal device of the rolling mill the between-3-5mm.

Background technique

Many weeks, the filmatic bearing of rolling mill when work in order to prevent lubricant oil and to leak outside and preventing that water from flowing into bearing and polluting bearing oil, then add seal arrangement in the filmatic bearing outside, existing common sealing device structure feature as shown in Figure 1 and Figure 2: its main member comprises neck seal 10, rigid annular shaped Seal end plate 54 and inner seal ring 62.Wherein neck seal 10 forms and has an annular sealing member 12 by a kind of flexible elastomeric is molded, and the sealing body is reinforced by the helical spring 14 and the wire rope 16 that are embedded in wherein in inside.The sealing body have opposite water side and oil side-prominent 18,20, the border of columniform outer surface 21 limits by adjoining another oily side flange 22 that is commonly called the second oily side flange 24 of " oil thrower ", and water side flange 26 is the end opposite of defining surface 21 then.

Flange

22 and 26 has the

peripheral protuberance

28,30 that is the angle setting respectively.Protuberance 28 is given prominence to along throwing the direction of taking out ring flange 24 from flange 22, and ring flange is given prominence to respect to flange 22 along same direction with being angle and form the space S of environment opening towards periphery between them thereby this throwing is tucked inside the sleeve.

Neck seal 10 is applicable on the tapering part 34 that is installed in rolling mill roll neck 36, and roll neck is rotatably supported in the filmatic bearing.This filmatic bearing comprises sleeve pipe 38, and this sleeve pipe is fixed in roll neck by traditional device (end illustrates), thereby rotates in roll neck.Sleeve pipe 38 has the Outer cylindrical bearing surface, this surface as axle journal in the inner bearing surface of fixing lining 40, to rotate.This village is sleeved in the bearing support 42.Sleeve pipe and roll neck together rotate, and the lining maintenance is static.Constantly thick oil is imported between the bearing surface of sleeve pipe 38 and lining 40.The toroidal extension 44 of bearing support forms storage pond 46, and the lubricant oil that flows out between bearing surface constantly is collected in this storage pond.Connect (not shown) by a suitable pipe lubricant oil extracted out from the storage pond, thus before looping back bearing surface with its cooling and filtration.

When working under the environment of roller in humidity, water covers the body of roll 48 and downward through its bottom surface 50 constantly.Although have the centrifugal force that water is thrown away roller, always there are some water to advance at the direction upper edge of bearing roll neck.

Rigid annular shaped Seal end plate 54 is mounted on and fixed relative to the toroidal extension 44 of bearing support 42.The sealing end plate has rigid annular shaped flange or the flashboard 56 that extends radially inwardly, and this flashboard is perpendicular to the axis of bearing.The inward flange of flashboard is radially spaced apart with the cylindrical outer surface 21 of flexible sealing body 10.The sealing end plate also comprises convex shoulder 58, and this convex shoulder is pulled the direction extension of 56 base portions along being in reverse to lock.Each convex shoulder 58 has the columniform convex shoulder surface 60 that is parallel to bearing axis.Cylindrical convex shoulder surface 60 is around

flexible sealing flange

22,26, and is arranged to by its

flexible protuberance

28,30 sliding contacts separately.

Inner seal ring 62 has elastic button 64 and engages with the end face 50 of roller.The inward flange of inner seal ring contacts with flexible sealing body 12 positions at the tie point place of projection 18 and flange 26.

In the steel rolling operation, said apparatus will be worked in the following manner: inner seal ring 62, flexible neck seal 10 and sleeve pipe 38 will rotate together with roll neck.Seal end plate 54, bearing support 42 and lining will keep static.Lubricant oil will constantly flow out between the bearing surface of sleeve pipe 38 and lining 40.Most this lubricant oil will be got back on the neck seal and will be directed to thus and store pond 46 by throwing sleeve ring 24, to return by the oily side flange 22 of rotation through throwing the lubricant oil take out ring 24, and stop this to lubricate by the flexible protuberance 28 that engages with the convex shoulder face seal to take out from the escape between flange and the convex shoulder surface 60.

Equally, the major component that is applied to the water on the roller will be returned by the inner seal ring 62 of rotation.Any water through inner seal ring will return by the water side flange 26 that rotates on the neck seal, and stops water to pass through between this flange and the peripheral convex shoulder thereof by flexible protuberance 30.

The shortcoming that above-mentioned seal arrangement exists comprises:

1, this seal arrangement is too high to the accuracy requirement of mounting point, and is owing to the accumulative total transmission of machining error, unusual below normal the appearance in the practical application:

A: the axial distance of inner seal ring 62 and sleeve pipe 38 is during less than design size, and flexible seals 10 is squeezed and distortion occurs, causes

flexible protuberance

28,30 wearing and tearing of flexible seals 10, seal failure.

B: inner seal ring 62 internal diameter sizes are during less than design size, cause inner seal ring 62 not to be in place to be roll diameter of roller awl cambered surface to block, and flexible seals 10 is squeezed and distortion occurs, causes

flexible protuberance

28,30 wearing and tearing of flexible seals 10, seal failure.

2, the

flexible protuberance

28,30 in the motive sealing position of this seal arrangement contacts with columniform convex shoulder surface 60, and the contact position is few, sealing surface and roll parallel to an axis, and direction is single, anti-axial float and circular runout weak effect.

3,

flexible protuberance

28,30 in the flexible seals 10 motive sealing contact position of this seal arrangement and seal body are integrative-structures,

flexible protuberance

28,30 is easy to wear, must change flexible seals 10 after

flexible protuberance

28,30 wearing and tearing, maintenance cost is improved.

Summary of the invention

The purpose of this invention is to provide a kind of multi-sealed, safe wear-resisting film bearing seal device.

The object of the present invention is achieved like this: it comprises neck seal and the rigid annular shaped Seal end plate that is fixed on the bearing support, it is characterized in that: described neck seal comprises the annular sealing member of being with slot and the sealed department that is plugged on the slot, this slot is relative with the sealing surface of rigid annular shaped Seal end plate, sealed department places between rigid annular shaped Seal end plate and the annular sealing member and with sealing surface and contacts, elongated portion along the annular sealing member of roll neck concave surface and sealed department homonymy is the absorption neck, the end of this absorption neck is connected with the secondary lip of water shutoff, water shutoff hat and water shutoff master lip, the secondary lip of water shutoff contacts with the roll neck concave surface, water shutoff master lip contacts with the extruding end face of rigid annular shaped Seal end plate, elongated portion along the annular sealing member of roll neck concave surface and sealed department heteropleural is an oil sealing master lip, oil sealing master lip contacts with the roll neck concave surface, and annular sealing member also is connected with throws oily lip.

Be embedded with helical spring and wire rope in the described annular sealing member.

Be embedded with counterbalance spring in the described oil sealing master lip.

Be provided with the protection water seal with the rigid annular shaped Seal end plate of the relative opposite side of sealing surface, the rigid annular shaped Seal end plate between protection water seal and the water shutoff hat is provided with the end face of flange water seal.

Described end face of flange water seal comprises flange and V-shape water seal, and the sealing bottom surface of this V-shape water seal and flange screw are on the rigid annular shaped Seal end plate, and the lip of V-shape water seal contacts with the roll neck concave surface.

Described sealed department comprises the base that is plugged in the slot, perpendicular to the water sealing limb and the seal oil limb of base, on water sealing limb and seal oil limb, be connected with the water shutoff lip and the oil sealing lip that deviate from mutually respectively.

The existing axial seal of the whole sealing system of the present invention has radial seal again, also has two-way end face seal, has strengthened the osmotic resistance of water, both effectively water shutoffs, and surface friction drag is less again.These Seal Design can change the problem that present filmatic bearing is generally intake.Sealed department has prolonged working life with the elastic caoutchouc manufacturing of heat-resisting, wear-resisting oil resistant again, only needs to change sealed department even damaged, and need not the neck seal integral replacing has been reduced maintenance cost.Cancelled the rigidity inner seal ring in the former seal arrangement, improved the adaptability of neck seal to axial installation dimension error, axial float is to the influence of seal arrangement when also having improved simultaneously operation.

Description of drawings

Fig. 1 is traditional neck seal 10 structural representations;

Fig. 2 is traditional local user mode structural representation;

Fig. 3 is a local user mode structural representation of the present invention;

Fig. 4 is the package assembly signal enlarged view of neck seal A of the present invention and sealed department B;

Fig. 5 is the structural representation enlarged view of flange section water seal C of the present invention;

Fig. 6 is the structural representation enlarged view of rigid annular shaped Seal end plate F of the present invention;

Fig. 7 is the structural representation enlarged view of protection water seal D of the present invention.

The present invention is described in further detail by example below in conjunction with accompanying drawing, but following example only is the present invention's example wherein, the rights protection scope of not representing the present invention and being limited, the scope of the present invention is as the criterion with claims.

Embodiment

As Fig. 3-shown in Figure 7, main structure of the present invention comprises neck seal A and the rigid annular shaped Seal end plate F that is fixed on the bearing support E, neck seal A comprises the annular sealing member 1 of being with slot 7 and the sealed department B that is plugged on the slot 7, be embedded with helical spring 6 and wire rope 4 in the annular sealing member 1, slot 7 is relative with the sealing surface 41 of rigid annular shaped Seal end plate, is provided with protection water seal D with the rigid annular shaped Seal end plate F of sealing surface 41 relative opposite sides.Sealed department B comprises the base 19 that is plugged in the slot 7, water sealing limb 17 and seal oil limb 25 perpendicular to base, on water sealing limb 17 and seal oil limb 25, be connected with the water shutoff lip 15 and the oil sealing lip 23 that deviate from mutually respectively, the sealed department B that is plugged on the slot places between rigid annular shaped Seal end plate F and the annular sealing member 1 and water shutoff lip 15, oil sealing lip 23 all contacts with sealing surface 41, elongated portion along the annular sealing member 1 of roll neck I concave surface and sealed department B homonymy is absorption neck 8, the end of this absorption neck is connected with the secondary lip 9 of water shutoff, water shutoff hat 11 and water shutoff master lip 13, the secondary lip 9 of water shutoff contacts with roll neck I concave surface, water shutoff master lip 13 contacts with the extruding end face 33 of rigid annular shaped Seal end plate F, elongated portion along the annular sealing member 1 of roll neck I concave surface and sealed department B heteropleural is an oil sealing master lip 3, be embedded with counterbalance spring 18 in the oil sealing master lip, oil sealing master lip contacts with the roll neck concave surface.Rigid annular shaped Seal end plate F between protection water seal D and the water shutoff hat 11 is provided with end face of flange water seal C, the end face of flange water seal comprises flange 31 and V-shape water seal 29, the sealing bottom surface 32 and the flange 31 of this V-shape water seal are pressed on the rigid annular shaped Seal end plate F, the lip of V-shape water seal 29 contacts with roll neck I concave surface, annular sealing member 1 also is connected with throws oily lip 27, and this is thrown oily lip 27 and is close on sleeve pipe H.Except that above-mentioned each structure, also comprise negative pressure trough 5, water seal mounting hole 35, protection water seal attachment face 37, rigid annular shaped Seal end plate mounting hole 39 and banding steel band 4 among the figure.

Because neck seal A, sealed department B, end face of flange water seal C, protection water seal D are the rubber elasticity Sealing, so when installing and using, can produce necessary geometry deformation, just can find out obviously that as the difference that the part-structure among Fig. 4,5,7 is compared with the same structure among Fig. 1 each structure that is subjected to active force has produced geometry deformation in various degree.In the steel rolling operation, said apparatus will be worked in the following manner: sealed department B, neck seal A and sleeve pipe H will rotate together with roll neck.Rigid annular shaped Seal end plate B, bearing support E and lining G will keep static.Lubricant oil will constantly flow out between the bearing surface of sleeve pipe H and lining G.Most this lubricant oil will be got back on the neck seal and will be imported into oil storage (not pointing out among the figure) thus by throwing oily lip 20, crossing the lubricant oil of throwing oily lip 20 will return by the seal oil limb 25 of rotation, and by and the oil sealing lip 23 of sealing surface sealing engagement stop this lubricated taking out between seal oil limb 26 and rigid annular shaped Seal end plate F to be escaped out.

Foreign matter is at first sealed by protection water seal D with a large amount of cooling waters, a small amount of cooling water is crossed protection water seal D, sealed by end face of flange water seal C, the micro-cooling water that is not blocked also can be subjected to the sealing of the secondary lip 9 of water shutoff, water shutoff master lip 13 and water shutoff hat 11, and the water shutoff lip 15 on the water sealing limb 17 of removable seal B is last one water-stop.

Claims

1, a kind of film bearing seal device, it comprises neck seal and the rigid annular shaped Seal end plate that is fixed on the bearing support, it is characterized in that: described neck seal comprises the annular sealing member of being with slot and the sealed department that is plugged on the slot, this slot is relative with the sealing surface of rigid annular shaped Seal end plate, sealed department places between rigid annular shaped Seal end plate and the annular sealing member and with sealing surface and contacts, elongated portion along the annular sealing member of roll neck concave surface and sealed department homonymy is the absorption neck, the end of this absorption neck is connected with the secondary lip of water shutoff, water shutoff hat and water shutoff master lip, the secondary lip of water shutoff contacts with the roll neck concave surface, water shutoff master lip contacts with the extruding end face of rigid annular shaped Seal end plate, elongated portion along the annular sealing member of roll neck concave surface and sealed department heteropleural is an oil sealing master lip, oil sealing master lip contacts with the roll neck concave surface, and annular sealing member also is connected with throws oily lip.

2, film bearing seal device according to claim 1 is characterized in that: be embedded with helical spring and wire rope in the described annular sealing member.

3, film bearing seal device according to claim 1 is characterized in that: be embedded with counterbalance spring in the described oil sealing master lip.

4, film bearing seal device according to claim 1, it is characterized in that: be provided with the protection water seal with the rigid annular shaped Seal end plate of the relative opposite side of sealing surface, the rigid annular shaped Seal end plate between protection water seal and the water shutoff hat is provided with the end face of flange water seal.

5, film bearing seal device according to claim 4, it is characterized in that: described end face of flange water seal comprises flange and V-shape water seal, the sealing bottom surface of this V-shape water seal and flange screw are on the rigid annular shaped Seal end plate, and the lip of V-shape water seal contacts with the roll neck concave surface.

6, film bearing seal device according to claim 1 is characterized in that: described sealed department comprises the base that is plugged in the slot, perpendicular to the water sealing limb and the seal oil limb of base, on water sealing limb and seal oil limb, be connected with the water shutoff lip and the oil sealing lip that deviate from mutually respectively.