CN114483959B - Sealing device for rolling mill roller shaft oil film bearing - Google Patents
Sealing device for rolling mill roller shaft oil film bearing Download PDFInfo
- Publication number
- CN114483959B CN114483959B CN202210307142.7A CN202210307142A CN114483959B CN 114483959 B CN114483959 B CN 114483959B CN 202210307142 A CN202210307142 A CN 202210307142A CN 114483959 B CN114483959 B CN 114483959B
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- ring
- sealing
- water
- labyrinth
- sealing ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 204
- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 230000003068 static effect Effects 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000005260 corrosion Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 description 58
- 239000000498 cooling water Substances 0.000 description 18
- 239000004744 fabric Substances 0.000 description 13
- 239000010687 lubricating oil Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/4476—Labyrinth packings with radial path
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a sealing device for an oil film bearing of a roller shaft of a rolling mill, which comprises a sealing cover fixedly arranged on a bearing seat, a taper sleeve lengthening ring fixedly arranged on the taper sleeve and a labyrinth ring fixedly arranged on the taper sleeve lengthening ring, wherein the sealing cover is provided with a sealing ring positioned on the inner side and a water blocking ring positioned on the outer side, the labyrinth ring comprises a water sealing ring opposite to the end face of the roller and a water return ring positioned between the sealing ring and the water blocking ring, a static sealing ring capable of forming static sealing fit with the end face of the roller is arranged on the water sealing ring, a water sealing oil mechanism respectively matched with the outer wall of the taper sleeve lengthening ring and the inner wall of the water return ring is arranged on the sealing ring, accumulated water in a thread groove can be thrown out from the outer side of the end face of the roller shaft when the roller rotates, and the section of the water blocking ring is rectangular. The roller shaft oil film bearing can obtain stable and reliable sealing effect after the invention is applied.
Description
Technical Field
The invention relates to sealing of an oil film bearing on a roller shaft of a rolling mill in a steel mill rolling mill, in particular to a sealing device for the oil film bearing of the roller shaft of the rolling mill.
Background
Oil film bearings are adopted at two ends of a roller of a large-scale steel rolling mill in a steel mill to bear huge rolling force. The oil film bearing is also called as liquid friction bearing, mainly includes two portions of bush fixed in bearing seat and taper sleeve rotating together with roller, and when in operation, it utilizes lubricating oil with a certain viscosity to form a complete pressure oil film between taper sleeve and bush to produce resistance force to implement bearing. Therefore, the oil film bearing needs to have good oil supply conditions when in work, and besides being provided with a reasonable oil supply system, a reliable sealing device is arranged between the fixed bearing seat and the rotating roller end face, and has the dual functions of blocking the invasion of impurities such as external cooling water and oxide scales and preventing the external leakage of internal lubricating oil.
The working environment of the rolling mill is very bad, and a large amount of cooling water is needed to cool the roller in the rolling process. The cooling water has a lot of functions, can reduce the surface temperature of the roller, reduce the thermal shock of steel to the surface of the roller, reduce the temperature difference between the inside and outside of the roller, can remove iron scales, prevent the damage to the surface of the roller caused by embedding the roller gap, can reduce the temperature of the roller bearing, prevent burnout and the like. The cooling water is required to have great pressure and flow, a large amount of impurities such as cooling water and iron scales can cause great threat to the oil film bearing sealing devices at the two ends of the roller, once the sealing fails, if the water inflow in the bearing seat exceeds a specified value, the oil film bearing lubricating oil is emulsified, the viscosity is reduced, the oil quality is poor, the condition for establishing an oil film between the oil film bearing taper sleeve and the bushing becomes harsh, the oil film bearing can be burnt out when serious, and meanwhile, the leakage of the lubricating oil wastes energy and pollutes the environment, so that the service life of the oil film bearing is greatly shortened, and the normal production of a rolling mill is seriously affected, so the reliability of the sealing device is particularly important.
FIG. 1 is a schematic illustration of a typical prior art roll oil film bearing seal arrangement: the roller 1 is provided with a roller shaft 2, the oil film bearing comprises a bearing seat 3, a bushing 4 and a taper sleeve 5, the taper sleeve is fixed on the roller shaft, a taper sleeve lengthening ring 6, a labyrinth ring 7 and a static sealing ring 8 are sequentially arranged on the taper sleeve, and rotate along with the roller, and the static sealing ring and the roller end face are tightly pressed to form a static seal. The bearing seat 3 is fixedly provided with a bushing 4 and a sealing cover 9, a pair of cloth clamping oil seals 11 and a full rubber water seal 12 are arranged on the sealing cover through a gland 10, two lips of the cloth clamping oil seals are contacted with a taper sleeve lengthening ring and rotate relatively to form a water sealing line and an oil sealing line, and the full rubber water seal is contacted with a labyrinth ring to form a water sealing line, so that a set of oil film bearing sealing device is formed. During operation, the outside cooling water enters the water collecting tank 13 of the labyrinth ring through the narrow gap formed by the sealing cover and the labyrinth ring and flows to the bottom along the water collecting tank, the water which is not discharged is discharged from the water outlet of the sealing cover, and then the water which is not discharged flows into the sealing line formed by the labyrinth ring and the full-rubber water seal along the labyrinth path formed by the sealing cover and the labyrinth ring, so that the water breaking through the sealing line is blocked by the sealing line formed by the labyrinth ring and the cloth clamping oil seal, the water cannot reach the inside of the oil film bearing, and the lubricating oil in the oil film bearing is blocked by the sealing line formed by the labyrinth ring and the cloth clamping oil seal, so that the lubricating oil is kept in the bearing seat.
The sealing device comprises a static seal, a labyrinth seal and a plurality of groups of dynamic seals, and although the sealing lines are relatively large, the sealing failure phenomenon of the oil film bearing still occurs in the actual use, the sealing performance is not stable, and the following reasons are mainly included: firstly, the external cooling water flow of the sealing device is very large, and the sealing device has certain pressure, the water collecting tank on the labyrinth ring is filled frequently, a large amount of water cannot flow in time and can break through the later sealing defense lines, meanwhile, the labyrinth ring rotates at a high speed along with the roller, the linear speed of the water collecting tank is relatively high, and the water in the labyrinth ring is thrown out under the action of centrifugal force and cannot smoothly flow to the bottom; secondly, the full-rubber water seal lip is contacted with the rough surface of the rusted labyrinth ring, so that the labyrinth ring is easy to wear quickly, the actual sealing effect is poor, and when the water quantity is more, the sealing capability is limited; thirdly, after the cooling water breaks through the sealing line formed by the full-rubber water seal and the labyrinth ring, no blocking exists in the middle, and the sealing line formed by the cloth clamping oil seal and the taper sleeve lengthening ring is directly abutted; fourthly, the two cloth clamping oil seals are arranged back to back, only the cloth clamping oil seal close to the oil film bearing plays a role in sealing oil, and the number of oil sealing and oil preventing lines is small, and only one cloth clamping oil seal is used; fifthly, the full-rubber water seal and the two cloth clamping oil seals are arranged on the sealing cover through the gland, and the installation and replacement work is complex; sixth, the cloth clamping framework of the cloth clamping oil seal is easy to shrink under the soaking of lubricating oil, and static seal failure formed by the outer diameter of the cloth clamping oil seal and the sealing cover is easy to cause.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sealing device for a rolling mill roller shaft oil film bearing, which has more stable and reliable sealing performance and good sealing effect.
In order to solve the technical problems, the sealing device for the rolling mill roller shaft oil film bearing comprises a sealing cover fixedly arranged on a bearing seat, a taper sleeve lengthening ring fixedly arranged on a taper sleeve and a labyrinth ring fixedly arranged on the taper sleeve lengthening ring, wherein the sealing cover is provided with a sealing ring positioned on the inner side and a water blocking ring positioned on the outer side, the labyrinth ring comprises a water sealing ring opposite to the end face of a roller and a water return ring positioned between the sealing ring and the water blocking ring, a static sealing ring capable of forming static sealing fit with the end face of the roller is arranged on the water sealing ring, a water sealing oil mechanism respectively matched with the outer wall of the taper sleeve lengthening ring and the inner wall of the water return ring is arranged on the outer wall of the water return ring, accumulated water in a groove between the threads can be thrown out from the outer side of the end face of the roller shaft when the roller rotates, and the section of the water blocking ring is rectangular.
After the technical characteristics are adopted, when cooling water passes through the outer wall of the water return ring and falls into the grooves between threads, the cooling water can be thrown out from the end face of the roll shaft in an inclined manner under the spiral pushing action generated by the rotation of the roll, and the cooling water is always pushed to the outer side of the sealing device, so that a stable and reliable sealing effect can be obtained.
As an improvement of the invention, the inner wall of the water blocking ring with the rectangular cross section adjacent to the end face of the roller is provided with an inclined surface which is inclined outwards.
After the inclined plane is arranged, the inclined plane can play a role in drainage, and is beneficial to the discharge of cooling water.
Further, a circumferential groove is formed in the outer wall of the water-blocking ring with the rectangular cross section, a water-blocking cylinder is arranged in the groove through hooping the steel belt, and an annular gap is formed between the cylinder opening of the water-blocking cylinder and the end face of the roller.
After the technical characteristics are adopted, the water blocking cylinder can block most of cooling water with pressure, and a small amount of cooling water is thrown out again when passing through the outer wall of the water return ring after passing through the water blocking cylinder, so that the water sealing effect can be further improved. The water-proof structure of the invention has the advantages that the annular gap is arranged between the cylinder opening of the water-proof cylinder and the end surface of the roller, the water-proof structure is non-contact type, abrasion is not generated, the limitation of surface smoothness is avoided, the water inflow can be effectively limited, and when a smaller amount of cooling water is blocked by the screw thread on the outer wall of the water return ring, the cooling water reaches the static sealing ring and the multi-limb sealing ring basically and can be sealed, so that the cooling water is effectively blocked outside the oil film bearing.
As a further improvement of the invention, the sealing and oil sealing mechanism is a multi-limb sealing ring which is arranged on the sealing ring through a screw, a screw hole for the screw to pass through is correspondingly arranged on the sealing ring, the multi-limb sealing ring is provided with a first sealing limb and a second sealing limb which are in dynamic sealing fit with the inner wall of the backwater ring, a first oil sealing limb and a second oil sealing limb which are in dynamic sealing fit with the outer wall of the taper sleeve lengthening ring, a static sealing boss which is in static sealing fit with the sealing ring, and a labyrinth inner ring and a labyrinth outer ring which extend to the sealing ring, and a labyrinth boss which extends between the labyrinth inner ring and the labyrinth outer ring is correspondingly arranged on the sealing ring; and an anti-corrosion and wear-resistant layer is correspondingly arranged on the inner wall of the water return ring.
After the technical characteristics are adopted, two dynamic sealing defense lines are respectively formed between the multi-limb sealing ring and the inner wall of the water return ring and the outer wall of the taper sleeve lengthening ring, better water seal and oil seal effects can be obtained simultaneously, and a labyrinth sealing mechanism is additionally arranged between the multi-limb sealing ring and the water seal ring, so that the water seal effect is further improved, after the anti-corrosion wear-resistant layer is arranged on the inner wall of the water return ring, when the first water seal limb and the second water seal limb slide relatively with the anti-corrosion wear-resistant layer, the sealing reliability can be kept all the time, the entering of external cooling water can be blocked more effectively, and the service life of the water seal limb is greatly prolonged.
Further, a metal flange framework with a frame-shaped section is vulcanized on one side, close to the sealing ring, of the multi-limb sealing ring, and the screws penetrate through the metal flange framework to mount the multi-limb sealing ring on the sealing ring.
After the technical characteristics are adopted, the rigidity of the multi-limb sealing ring is improved, the manufacturing precision is convenient to control, and meanwhile, the mounting and positioning precision of the multi-limb sealing ring and the sealing ring can be ensured, so that the sealing performance is more reliable.
Further, the screw is a hollow screw, and the screw hole is a through hole.
The center of the hollow screw is provided with a through hole with the diameter of preferably 3 mm.
After the technical characteristics of the hollow screw are further adopted, a small amount of lubricating oil in the bearing seat can flow into the labyrinth sealing mechanism, the water sealing limb and the oil sealing limb through the screw holes and the hollow screw, so that the surface of the labyrinth ring can be prevented from being corroded too early, lubrication can be provided for the lip of the sealing limb of the multi-limb sealing ring, and the sealing failure is avoided due to the fact that the sealing lip is worn too early.
As a still further improvement of the invention, the end part of the labyrinth inner ring is provided with an oil sealing lip which extends obliquely inwards to be abutted against the water sealing ring, and the end part of the labyrinth outer ring is provided with a water sealing lip which extends obliquely outwards to be abutted against the water sealing ring; an inner ring anti-corrosion wear-resistant layer is arranged on the inner wall of the water sealing ring which is correspondingly positioned at the inner side of the labyrinth boss, and an outer ring anti-corrosion wear-resistant layer is arranged on the inner wall of the water sealing ring which is positioned at the outer side of the labyrinth boss. After the technical characteristics are adopted, on one hand, the sealing effect of a labyrinth sealing mechanism formed between the inner ring and the outer ring of the labyrinth and the labyrinth boss can be further improved, and on the other hand, when the oil sealing lip and the water sealing lip slide relatively to the inner ring and the outer ring of the labyrinth anti-corrosion wear-resistant layer, the sealing reliability can be always kept, and the service lives of the oil sealing lip and the water sealing lip are greatly prolonged.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic partial cross-sectional view of an oil film bearing seal of the prior art.
FIG. 2 is a schematic partial cross-sectional view of a seal assembly of the present invention for a rolling mill roll axle oil film bearing.
FIG. 3 is a schematic view of a partial cross-sectional structure of a seal cap according to the present invention.
Fig. 4 is a schematic view of a partial cross-sectional structure of a labyrinth ring according to a first embodiment of the present invention, in which an anti-corrosion wear-resistant layer is provided only on the inner wall of the backwater ring.
Fig. 5 is an enlarged schematic view of the structure at I in fig. 2.
Fig. 6 is a schematic partial cross-sectional view of a multi-limb seal ring according to a first embodiment of the present invention.
FIG. 7 is a schematic view of a part of a multi-limb seal ring according to a second embodiment of the present invention, wherein the multi-limb seal ring has an obliquely extending oil seal lip and a water seal lip.
FIG. 8 is a schematic view of a partial cross-sectional structure of a labyrinth ring according to a second embodiment of the present invention, wherein an anti-corrosion wear-resistant layer is disposed on an inner wall of a backwater ring, and inner and outer ring anti-corrosion wear-resistant layers are disposed on an inner wall of a sealing ring, respectively.
Fig. 9 is an enlarged schematic view of the static seal ring in the present invention.
Fig. 10 is fig. 2 after application of a second embodiment of the multi-limb seal ring and labyrinth ring.
Detailed Description
FIG. 1 is a schematic view in partial cross-section of an oil film bearing seal of the prior art, wherein: the novel high-pressure water-saving type rolling mill comprises a roller 1, a roller shaft 2, a bearing seat 3, a bushing 4, a taper sleeve 5, a taper sleeve lengthening ring 6, a labyrinth ring 7, a static sealing ring 8, a sealing cover 9, a gland 10, a cloth clamping oil seal 11, a full-rubber water seal 12 and a water collecting tank 13.
Referring to fig. 2 to 5 again, the sealing device for the oil film bearing of the roller shaft of the rolling mill according to the present invention comprises a sealing cover 100 fixed on a bearing seat, a taper sleeve lengthening ring 200 fixed on a taper sleeve, and a labyrinth ring 300 fixed on the taper sleeve lengthening ring, wherein the sealing cover is provided with a sealing ring 110 positioned on the inner side and a water blocking ring 120 positioned on the outer side, the labyrinth ring comprises a water sealing ring 310 opposite to the end surface of the rolling mill and a water return ring 320 positioned between the sealing ring and the water blocking ring, the water sealing ring 310 is provided with a static sealing ring 330 capable of forming a static sealing fit with the end surface of the rolling mill, and the sealing ring 110 is provided with a water sealing oil sealing mechanism respectively matched with the outer wall of the taper sleeve lengthening ring and the inner wall of the water return ring, and the sealing device is characterized in that: the outer wall of the water return ring 320 is provided with threads 321 which can be thrown out from the outer side of the end surface of the roll shaft in an inclined manner when the roll rotates, the section of the water blocking ring 120 is rectangular, and the threads 321 are preferably rectangular threads. The water blocking ring 120 having a rectangular cross section is formed with an inclined surface 121 inclined to the outside on the inner wall adjacent to the end face of the roll. The outer wall of the water-blocking ring 120 is also provided with a circumferential groove 122, a water-blocking cylinder 124 is arranged in the groove by tightening a steel belt 123, and an annular gap 125 is arranged between the cylinder mouth of the water-blocking cylinder and the end face of the roller.
Referring to fig. 2,3,4 and 6, the sealing and sealing mechanism is a multi-limb sealing ring 130 mounted on the sealing ring 110 through a screw 131, and correspondingly, the sealing ring is provided with a screw hole 111 for the screw to pass through, the multi-limb sealing ring is provided with a first sealing limb 132 and a second sealing limb 133 which are in dynamic sealing fit with the inner wall of a water return ring 320 on the labyrinth ring 300, a first sealing limb 134 and a second sealing limb 135 which are in dynamic sealing fit with the outer wall of the taper sleeve lengthening ring 200, a static sealing boss 136 which is in static sealing fit with the sealing ring 110, and a labyrinth inner ring 137 and a labyrinth outer ring 138 which extend to the water sealing ring 310 on the labyrinth ring 300, and correspondingly, the sealing ring is provided with a labyrinth boss 311 which extends between the labyrinth inner ring and the labyrinth outer ring; an anti-corrosion and wear-resistant layer 322 is correspondingly arranged on the inner wall of the backwater ring 320 on the labyrinth ring 300. The multi-limb sealing ring 130 is vulcanized with a metal flange framework 139 with a frame-shaped section on one side close to the sealing ring 110, and the screws 131 penetrate through the metal flange framework to mount the multi-limb sealing ring on the sealing ring 110. The screw 131 is a hollow screw, the screw hole 111 is a through hole, and the center of the hollow screw 131 is provided with a through hole with the diameter of 3 mm.
Referring finally to fig. 7-10, the end of the inner labyrinth ring 137 is formed with an oil sealing lip 137 'extending obliquely inward and abutting against the water sealing ring 310, and the end of the outer labyrinth ring 138 is formed with a water sealing lip 138' extending obliquely outward and abutting against the water sealing ring; an inner ring anti-corrosion and wear-resistant layer 312 is arranged on the inner wall of the water sealing ring 310 positioned on the inner side of the labyrinth boss 311 correspondingly, and an outer ring anti-corrosion and wear-resistant layer 313 is arranged on the inner wall of the water sealing ring 310 positioned on the outer side of the labyrinth boss 311. The static sealing ring 330 is a double-lip sealing ring, and is provided with two static sealing lips 331 which can be propped against the end face of the roller to form an eight shape.
Claims (9)
1. The utility model provides a sealing device for rolling mill roll roller oil film bearing, includes sealing lid (100) of solid dress on the bearing frame, gu adorn taper sleeve extension ring (200) of adorning on the taper sleeve and gu install labyrinth ring (300) on the taper sleeve extension ring, sealing lid have be located inboard sealing ring (110) and be located the water retaining ring (120) of outside, the labyrinth ring include with the roller terminal surface relative sealing ring (310) and be located return water ring (320) between sealing ring and the water retaining ring, be equipped with on sealing ring (310) can form quiet sealing cooperation's quiet sealing ring (330) with between the roller terminal surface, be equipped with on sealing ring (110) respectively with taper sleeve extension ring outer wall and return water intra-annular wall matched with seal oil mechanism, its characterized in that: threads (321) which can be thrown out from the outer side of the end face of the roll shaft in an inclined way due to accumulated water in a thread groove when the roll rotates are arranged on the outer wall of the water return ring (320), and the section of the water blocking ring (120) is rectangular; the sealing and oil sealing mechanism is a multi-limb sealing ring (130) arranged on the sealing ring (110) through a screw (131), a screw hole (111) for the screw to pass through is correspondingly arranged on the sealing ring, the multi-limb sealing ring is provided with a first sealing limb (132) and a second sealing limb (133) which are in dynamic sealing fit with the inner wall of the water return ring (320), a first oil sealing limb (134) and a second oil sealing limb (135) which are in dynamic sealing fit with the outer wall of the taper sleeve lengthening ring (200), a static sealing boss (136) which is in static sealing fit with the sealing ring (110), and a labyrinth inner ring (137) and a labyrinth outer ring (138) which extend to the sealing ring (310), and a labyrinth boss (311) which extends between the labyrinth inner ring and the labyrinth outer ring is correspondingly arranged on the sealing ring; an anti-corrosion and wear-resistant layer (322) is correspondingly arranged on the inner wall of the backwater ring (320).
2. A seal for a rolling mill roll axle oil film bearing as claimed in claim 1, wherein: the thread (321) is rectangular.
3. A seal for a rolling mill roll axle oil film bearing as claimed in claim 2, wherein: the inner wall of the water-blocking ring (120) with the rectangular cross section, which is adjacent to the end face of the roller, is provided with an inclined surface (121) which is inclined outwards.
4. A seal for a rolling mill roll axle oil film bearing as claimed in claim 3, wherein: a circumferential groove (122) is formed in the outer wall of the water blocking ring (120) with the rectangular cross section, a water blocking cylinder (124) is arranged in the groove through a hooping steel belt (123), and an annular gap (125) is formed between the cylinder opening of the water blocking cylinder and the end face of the roller.
5. A seal for a rolling mill roll axle oil film bearing as claimed in claim 1, wherein: a metal flange framework (139) with a frame-shaped section is vulcanized on one side, close to the sealing ring (110), of the multi-limb sealing ring (130), and screws (131) penetrate through the metal flange framework to install the multi-limb sealing ring on the sealing ring (110).
6. The seal for a rolling mill roll axle oil film bearing of claim 5, wherein: the screw (131) is a hollow screw, and the screw hole (111) is a through hole.
7. The seal for a rolling mill roll axle oil film bearing of claim 6, wherein: the center of the hollow screw (131) is provided with a through hole with the diameter of 3 mm.
8. The seal for a rolling mill roll axle oil film bearing of claim 6, wherein: the end part of the labyrinth inner ring (137) is provided with an oil sealing lip (137 ') which extends obliquely inwards to be abutted against the water sealing ring (310), and the end part of the labyrinth outer ring (138) is provided with a water sealing lip (138') which extends obliquely outwards to be abutted against the water sealing ring; an inner ring anti-corrosion and wear-resistant layer (312) is arranged on the inner wall of the water sealing ring (310) which is correspondingly positioned on the inner side of the labyrinth boss (311), and an outer ring anti-corrosion and wear-resistant layer (313) is arranged on the inner wall of the water sealing ring (310) which is positioned on the outer side of the labyrinth boss (311).
9. A seal for a rolling mill roll axle oil film bearing as claimed in claim 1, wherein: the static sealing ring (330) is a double-lip sealing ring and is provided with two static sealing lips (331) which can be propped against the end face of the roller and are in an eight shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307142.7A CN114483959B (en) | 2022-03-27 | 2022-03-27 | Sealing device for rolling mill roller shaft oil film bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210307142.7A CN114483959B (en) | 2022-03-27 | 2022-03-27 | Sealing device for rolling mill roller shaft oil film bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114483959A CN114483959A (en) | 2022-05-13 |
| CN114483959B true CN114483959B (en) | 2024-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210307142.7A Active CN114483959B (en) | 2022-03-27 | 2022-03-27 | Sealing device for rolling mill roller shaft oil film bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114483959B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216923188U (en) * | 2022-03-27 | 2022-07-08 | 铁岭五星密封研究所有限公司 | Waterproof sealing mechanism of roller roll film bearing |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3535445A1 (en) * | 1985-10-04 | 1987-04-16 | Goetze Ag | SHAFT SEALING SYSTEM |
| US6851676B2 (en) * | 2002-12-17 | 2005-02-08 | Morgan Construction Company | Inner seal ring for rolling mill oil film bearing |
| DE10360382A1 (en) * | 2003-12-16 | 2005-07-21 | Sms Demag Ag | sealing device |
| CN2825143Y (en) * | 2005-09-23 | 2006-10-11 | 宝山钢铁股份有限公司 | Water-stop roller of rolling mill |
| CN101712047A (en) * | 2009-12-17 | 2010-05-26 | 天津津重重工机器设备制造有限公司 | Bar mill roller system sealing device |
| CN108607882B (en) * | 2016-12-12 | 2019-12-17 | 上海梅山钢铁股份有限公司 | Control device and control method for preventing rolling liquid from entering rolling bearing of UC rolling mill |
-
2022
- 2022-03-27 CN CN202210307142.7A patent/CN114483959B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216923188U (en) * | 2022-03-27 | 2022-07-08 | 铁岭五星密封研究所有限公司 | Waterproof sealing mechanism of roller roll film bearing |
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| CN114483959A (en) | 2022-05-13 |
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