CN216923188U - Waterproof sealing mechanism of roller roll film bearing - Google Patents
Waterproof sealing mechanism of roller roll film bearing Download PDFInfo
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- CN216923188U CN216923188U CN202220673752.4U CN202220673752U CN216923188U CN 216923188 U CN216923188 U CN 216923188U CN 202220673752 U CN202220673752 U CN 202220673752U CN 216923188 U CN216923188 U CN 216923188U
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Abstract
The utility model discloses a waterproof sealing mechanism of a roller roll shaft oil film bearing, which comprises a sealing cover fixedly arranged on a bearing seat and a labyrinth ring fixedly arranged on a 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 surface of a roller and a water returning ring positioned between the sealing ring and the water blocking ring, the water sealing ring is provided with a static sealing ring which can form static sealing fit with the end surface of the roller, the sealing ring is provided with a full-rubber water seal which can be in dynamic sealing fit with the inner wall of the water returning ring, the full-rubber water seal is provided with a first water sealing lip and a second water sealing lip which are distributed approximately in a U shape, the first water sealing lip and the second water sealing lip can be in dynamic sealing fit with the inner wall of the water returning ring, and correspondingly, the inner wall of the water returning ring is provided with an anticorrosive wear-resistant layer. The utility model can obtain better water sealing effect.
Description
Technical Field
The utility model relates to a sealing structure of a roller shaft oil film bearing, in particular to a waterproof sealing mechanism of the roller shaft oil film bearing.
Background
Oil film bearings are adopted at two ends of a large-scale rolling mill roller of a steel mill to bear huge rolling force. The oil film bearing is also called as liquid friction bearing, mainly includes two portions of lining fixed in the bearing seat and taper sleeve which can be rotated together with roller, when it is worked, it utilizes the lubricating oil with a certain viscosity to form a complete pressure oil film between the taper sleeve and lining to produce resistance force to implement bearing. Therefore, the oil film bearing needs to have good oil supply conditions when working, and a reliable sealing device is arranged between a fixed bearing seat and a rotating roller end face besides a reasonable oil supply system, so that the invasion of a large amount of external cooling water, iron oxide scales and other impurities is resisted, and meanwhile, the leakage of internal lubricating oil is prevented.
Fig. 1 is a typical structure of an oil film bearing sealing device in the prior art: the taper sleeve 1 ' is fixed on a roll shaft 21 ' of the roll 2 ', the taper sleeve lengthening ring 3 ', the labyrinth ring 4 ' and the static sealing ring 5 ' are sequentially arranged on the taper sleeve 1 ', the taper sleeve lengthening ring, the labyrinth ring and the static sealing ring rotate together with the roll, and the static sealing ring and the end face of the roll are compressed to form static sealing. A bush 7 'and a sealing cover 8' are fixed on a bearing seat 6 ', a pair of cloth clamping oil seals 10' and a full-rubber water seal 11 'are arranged on the sealing cover through a pressing cover 9', two lips of the cloth clamping oil seals are in contact with a taper sleeve lengthened ring and rotate relatively to form a water sealing defense line and an oil sealing defense line, the full-rubber water seal is in contact with a labyrinth ring to form the water sealing defense line, and thus the oil film bearing sealing device is formed. When the oil film bearing works, external cooling water enters the water collecting tank 41' of the labyrinth ring by a small part of narrow gaps formed by the sealing cover and the labyrinth ring and flows to the bottom along the water collecting tank, the external cooling water is discharged from a water outlet of the sealing cover, a small part of water which cannot be discharged further flows into a sealing defense line formed by the labyrinth ring and the full-rubber water seal along a labyrinth path formed by the sealing cover and the labyrinth ring, and the water breaking through the defense line is finally blocked by the sealing defense line formed by the labyrinth ring and the cloth clamping oil seal, so that the external cooling water cannot reach the inside of the oil film bearing. Although the sealing structure has more water sealing lines, the phenomenon of water inflow of the oil film bearing still happens in the practical use, the sealing effect is poor, and the following reasons mainly exist: firstly, the full-rubber water seal lip is in contact with the rusted rough surface of the labyrinth ring, so that the wear is very easy and rapid, the actual sealing effect is poor, and when the water amount is large, the sealing capability is limited; secondly, the sealing effect is relatively poor when the static sealing ring is matched with the end face of the roller; thirdly, the external cooling water flow of the sealing device is very large and has certain pressure, the water collecting tank on the labyrinth ring is often filled, a large amount of water cannot flow away in time and inevitably breaks through a plurality of sealing defense lines behind the labyrinth ring, meanwhile, the labyrinth ring rotates at high speed along with the roller, the linear speed of the water collecting tank is relatively large, and the internal water is thrown out under the action of centrifugal force and cannot flow to the bottom of the water collecting tank smoothly.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a waterproof sealing mechanism of a roller shaft oil film bearing, and after the waterproof sealing mechanism is applied, external cooling water can be more effectively prevented from entering the oil film bearing, so that a better sealing effect is obtained.
In order to solve the technical problem, the utility model relates to a waterproof sealing mechanism of a roller roll shaft oil film bearing, which comprises a sealing cover fixedly arranged on a bearing seat and a labyrinth ring fixedly arranged on a 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 surface of a roller and a water return ring positioned between the sealing ring and the water blocking ring, the water sealing ring is provided with a static sealing ring which can be in static sealing fit with the end surface of the roller, and the sealing ring is provided with a full-rubber water seal which can be in dynamic sealing fit with the inner wall of the water return ring, and the waterproof sealing mechanism is characterized in that: the full-rubber water seal is provided with a first water sealing lip and a second water sealing lip which are approximately U-shaped and distributed, the first water sealing lip and the second water sealing lip can be in dynamic sealing fit with the inner wall of the water return ring, and correspondingly, an anti-corrosion wear-resistant layer is arranged on the inner wall of the water return ring.
Furthermore, a tightening spring is further installed between the first water sealing lip and the second water sealing lip of the full-rubber water seal.
The full-rubber water seal adopts a double-lip water seal structure, two lips and the anti-corrosion wear-resistant layer on the inner wall of the return water ring in the labyrinth ring form two dynamic seals, when the double-lip water seal lips and the anti-corrosion wear-resistant layer slide relatively, the sealing reliability can be always kept, the external cooling water can be more effectively prevented from entering, and the service life of the double-lip water seal is greatly prolonged; after the technical characteristics of the hooping spring are further installed between the two lips, the hooping spring can ensure that the double-lip water seal is firmly fixed on the sealing ring of the sealing cover, and the installation is very convenient.
As an improvement of the utility model, a circumferential arc groove with an arc-shaped cross section is formed on a sealing surface of the static sealing ring matched with the end surface of the roller. After the technical characteristics are adopted, when the static sealing ring is attached to and pressed against the end face of the roller, the static sealing ring is in contact with the end face of the roller by two narrow surfaces, and meanwhile, a negative pressure cavity can be formed at the arc groove, so that the static sealing is more reliable and durable, and a better water sealing effect is obtained.
As a further improvement of the utility model, the outer wall of the water return ring is provided with threads which can enable accumulated water in the grooves among the threads to be inclined to the outer side of the end face of the roll shaft and be thrown out when the roll rotates, and the section of the water blocking ring is rectangular.
Preferably, the thread is a rectangular thread.
After the technical characteristics are adopted, when cooling water passes through the outer wall of the water return ring and falls into the grooves among the threads, the cooling water can be thrown out from the end face of the inclined roller shaft under the spiral pushing action generated by the rotation of the roller, and the cooling water is always pushed to the outer side of the water seal device, so that the water seal effect can be further improved.
As a further improvement of the utility model, the water-blocking ring with a rectangular cross section is formed with a slope inclined toward the outside on the inner wall adjacent to the end face of the roll. After the inclined plane is arranged, the inclined plane can play a role in drainage, and is favorable for discharging cooling water.
As a further improvement of the utility model, a circumferential groove is formed on the outer wall of the water-blocking ring with the rectangular cross section, a water-blocking cylinder is arranged in the groove by hooping a steel strip, and an annular gap is formed between the cylinder opening of the water-blocking cylinder and the end surface of the roller. After adopting above-mentioned technical characteristic, the section of thick bamboo that blocks water can block most cooling water that has pressure, and a small amount of cooling water is thrown away once more when the outer wall of backwater ring after passing through the section of thick bamboo that blocks water, can further improve the water seal effect again. The annular gap is formed between the opening of the water blocking cylinder and the end face of the roller, the waterproof structure belongs to non-contact type sealing, abrasion is avoided, the restriction of surface finish is avoided, the water inflow can be effectively limited, and when a smaller amount of cooling water is blocked by the threads on the outer wall of the water return ring, the cooling water can be basically sealed when reaching the static sealing ring and the full-rubber water seal, so that the cooling water is effectively blocked outside the oil film bearing.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic partial cross-sectional view of a prior art oil film bearing seal arrangement.
Fig. 2 is a partially sectional schematic view of a waterproof sealing mechanism of a roll shaft oil film bearing of the present invention.
FIG. 3 is a partial sectional view schematically showing the structure of a labyrinth ring according to the present invention.
Fig. 4 is an enlarged schematic structural view of the full-rubber water seal of the present invention.
Fig. 5 is an enlarged structural schematic view of the static seal ring of the present invention.
Fig. 6 is a partial sectional view schematically showing the sealing cap according to the present invention.
Fig. 7 is an enlarged schematic view of the structure at I in fig. 1.
Detailed Description
Referring to fig. 2-7, the waterproof sealing mechanism of the oil film bearing of the roller shaft of the roller of the utility model comprises a sealing cover 100 fixedly arranged on a bearing pedestal and a labyrinth ring 200 fixedly arranged on a taper sleeve extension ring, wherein the sealing cover is provided with a sealing ring 110 positioned on the inner side and a water-stopping ring 120 positioned on the outer side, the labyrinth ring comprises a water-sealing ring 210 opposite to the end surface of the roller and a water-returning ring 220 positioned between the sealing ring and the water-stopping ring, the water-sealing ring 210 is provided with a static sealing ring 230 capable of forming static sealing fit with the end surface of the roller, and the sealing ring 110 is provided with a full-glue water seal 130 capable of being in dynamic sealing fit with the inner wall of the water-returning ring 220, and is characterized in that: the all-rubber water seal 130 is provided with a first water sealing lip 131 and a second water sealing lip 132 which are approximately U-shaped, the first water sealing lip 131 and the second water sealing lip 132 can be in dynamic sealing fit with the inner wall of the water return ring 220, and correspondingly, an anti-corrosion wear-resistant layer 221 is arranged on the inner wall of the water return ring 220. And a tightening spring 133 is further installed between the first water sealing lip 131 and the second water sealing lip 132 of the full-rubber water seal 130. An arc groove 231 with an arc-shaped section is formed on the sealing surface of the static sealing ring 230 matched with the end surface of the roller along the circumferential direction. The outer wall of the water return ring 220 is provided with threads 222 which can enable accumulated water in grooves among the threads to be inclined to the outer side of the end face of the roll shaft and be thrown out when the roll rotates, and the section of the water blocking ring 120 is rectangular. The threads 222 are rectangular threads. The inner wall of the water-blocking ring 120 adjacent to the end surface of the roll, which has a rectangular cross section, is formed with an inclined surface 121 inclined outward. The outer wall of the water-blocking ring 120 with the rectangular cross section is provided with a circumferential groove 122, 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 surface of the roller.
Claims (7)
1. The utility model provides a roll roller oil film bearing's waterproof sealing mechanism, including adorn sealed lid (100) on the chock admittedly and adorn labyrinth ring (200) on the taper sleeve extension ring admittedly, sealed lid have and be located inboard sealing ring (110) and be located the outside hinder water ring (120), labyrinth ring include with roll terminal surface relative seal water ring (210) and be located return water ring (220) between sealing ring and the water ring that hinders, seal water ring (210) be equipped with can and roll terminal surface between form static seal complex static seal circle (230), be equipped with on sealing ring (110) can with return water ring (220) inner wall movive seal complex full glue water seal (130), its characterized in that: the all-rubber water seal (130) is provided with a first water sealing lip (131) and a second water sealing lip (132) which are approximately U-shaped and distributed, the first water sealing lip (131) and the second water sealing lip (132) can be in dynamic sealing fit with the inner wall of the water return ring (220), and correspondingly, an anti-corrosion wear-resistant layer (221) is arranged on the inner wall of the water return ring (220).
2. The waterproof sealing mechanism of a roll roller oil film bearing of claim 1, wherein: and a tightening spring (133) is further arranged between the first water sealing lip (131) and the second water sealing lip (132) of the full-rubber water seal (130).
3. The waterproof sealing mechanism of a roll roller oil film bearing of claim 1, wherein: and an arc groove (231) with an arc-shaped section in the circumferential direction is formed on a sealing surface of the static sealing ring (230) matched with the end surface of the roller.
4. The waterproof sealing mechanism of a roll roller oil film bearing of claim 1, wherein: the outer wall of the water return ring (220) is provided with threads (222) which can enable accumulated water in grooves among the threads to incline to the outer side of the end face of the roll shaft to be thrown out when the roll rotates, and the section of the water blocking ring (120) is rectangular.
5. The waterproof sealing mechanism of a roll roller oil film bearing of claim 4, wherein: the thread (222) is a rectangular thread.
6. The waterproof sealing mechanism of a roll roller oil film bearing of claim 5, wherein: and an inclined surface (121) inclined towards the outer side is formed on the inner wall of the water-blocking ring (120) with the rectangular section, which is adjacent to the end surface of the roller.
7. The waterproof sealing mechanism of a roll roller oil film bearing of claim 6, 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 mounted 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220673752.4U CN216923188U (en) | 2022-03-27 | 2022-03-27 | Waterproof sealing mechanism of roller roll film bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220673752.4U CN216923188U (en) | 2022-03-27 | 2022-03-27 | Waterproof sealing mechanism of roller roll film bearing |
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| CN216923188U true CN216923188U (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220673752.4U Active CN216923188U (en) | 2022-03-27 | 2022-03-27 | Waterproof sealing mechanism of roller roll film bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483959A (en) * | 2022-03-27 | 2022-05-13 | 铁岭五星密封研究所有限公司 | Sealing device for rolling mill roller shaft oil film bearing |
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2022
- 2022-03-27 CN CN202220673752.4U patent/CN216923188U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483959A (en) * | 2022-03-27 | 2022-05-13 | 铁岭五星密封研究所有限公司 | Sealing device for rolling mill roller shaft oil film bearing |
| CN114483959B (en) * | 2022-03-27 | 2024-07-16 | 铁岭五星密封研究所有限公司 | Sealing device for rolling mill roller shaft oil film bearing |
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