CN218031113U - Labyrinth seal structure for bearing seal - Google Patents
Labyrinth seal structure for bearing seal Download PDFInfo
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- CN218031113U CN218031113U CN202222199122.0U CN202222199122U CN218031113U CN 218031113 U CN218031113 U CN 218031113U CN 202222199122 U CN202222199122 U CN 202222199122U CN 218031113 U CN218031113 U CN 218031113U
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- labyrinth
- ring
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Abstract
The utility model provides a labyrinth seal structure for bearing seal, include: the bearing comprises a shaft sleeve, a bearing seat, a first labyrinth ring, a second labyrinth ring, a third labyrinth ring and a bolt; wherein the shaft sleeve is sleeved on the rotating shaft, the outer wall of the shaft sleeve is provided with an annular bearing groove, and the bearing is arranged in the bearing groove and embedded in the bearing seat; the outer wall of the shaft sleeve is sequentially provided with a first ring groove, a second ring groove, a third ring groove and a fourth ring groove from the bearing groove to the end part of the shaft sleeve; the first labyrinth ring and the third labyrinth ring are fixed on the bearing seat through bolts, and the second labyrinth ring is positioned in a gap formed by matching the first labyrinth ring and the third labyrinth ring; a first labyrinth tooth is arranged on the inner side of the first labyrinth ring and is positioned in the first ring groove; a second labyrinth tooth is arranged on the inner side of the second labyrinth ring and is positioned in the second ring groove; and a third labyrinth tooth is arranged on the inner side of the third labyrinth ring and is positioned in the fourth ring groove. The utility model provides a waterproof problem of high-speed bearing.
Description
Technical Field
The utility model relates to a bearing seal technical field, in particular to a labyrinth seal structure for preventing external cooling water from getting into bearing chamber.
Background
The function of the bearing seal is to prevent foreign matters from entering. For example, when a rolling mill runs, the rolling mill needs to be flushed by external cooling water, and in order to prevent the cooling water from entering a bearing box and causing corrosion and abrasion to a bearing, a water seal structure needs to be installed on the side surface of the bearing. As shown in figure 1, the traditional waterproof seal is a rubber V-shaped ring, as shown in figure 1, the rubber V-shaped ring 101 is tightened and then hooped on a rotating shaft 103 to rotate along with the rotating shaft, a lip 102 of the rubber V-shaped ring contacts with a shell, and a sealing effect is achieved through interference fit of the lip and the shell.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve the high-speed bearing serious, the life-span is short and the not good problem of water-proof effects, aim at provides the labyrinth seal structure who is used for the bearing seal.
In order to achieve the above purpose, the utility model adopts the following scheme:
the utility model provides a labyrinth seal structure for bearing seal, a serial communication port, include: the bearing comprises a shaft sleeve, a bearing seat, a first labyrinth ring, a second labyrinth ring, a third labyrinth ring and a bolt; the bearing is arranged in the bearing groove and embedded in the bearing seat; the outer wall of the shaft sleeve is sequentially provided with a first ring groove, a second ring groove, a third ring groove and a fourth ring groove from the bearing groove to the end part of the shaft sleeve; the first labyrinth ring and the third labyrinth ring are fixed on the bearing seat through bolts, and the second labyrinth ring is positioned in a gap formed by matching the first labyrinth ring and the third labyrinth ring; the inner side of the first labyrinth ring is provided with first labyrinth teeth, and the first labyrinth teeth are positioned in the first ring groove; a second labyrinth tooth is arranged on the inner side of the second labyrinth ring and is positioned in the second ring groove; the inner side of the third labyrinth ring is provided with third labyrinth teeth, and the third labyrinth teeth are positioned in the fourth ring groove.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: wherein, first labyrinth tooth, second labyrinth tooth, third labyrinth tooth have L type groove structure.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: the outer wall of the shaft sleeve is provided with a first bulge between the first ring groove and the second ring groove; a second bulge is arranged between the second annular groove and the third annular groove, and a hook structure extending towards the bearing side is formed on the second bulge; the fourth ring groove is provided with a third bulge at one side close to the end part of the shaft sleeve, and the third bulge is provided with a hook structure extending towards the bearing side.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: the outer peripheral walls of the first labyrinth ring and the third labyrinth ring are matched to form a first collecting groove.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: the first labyrinth ring is provided with a first water drainage hole and a second water drainage hole along the radial direction, and the first water drainage hole and the second water drainage hole are arranged in parallel; the end surface of the first labyrinth ring, which is in contact with the bearing seat, is provided with a through hole communicated with the first drainage hole; the bearing seat is provided with a bearing seat drain hole communicated with the through hole; the second labyrinth ring is correspondingly arranged at the port position of the second drain hole.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: and the third labyrinth ring is provided with a third drain hole along the radial direction, and the third drain hole corresponds to the third annular groove in position.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: a first O-shaped ring is arranged between the first labyrinth ring and the bearing seat; a second O-shaped ring is arranged between the third labyrinth ring and the first labyrinth ring.
Further, in the labyrinth seal structure for bearing seal provided by the present invention, it is also possible to have such a feature: wherein, first labyrinth ring, second labyrinth ring, third labyrinth ring all do not contact with the surface of axle sleeve.
The utility model discloses an effect and effect:
1) The utility model provides a labyrinth seal structure for bearing seal has the waterproof drainage structures of multichannel, and especially inside is provided with multichannel labyrinth seal, but leakage quantity is let out in furthest's reduction.
2) The utility model provides an it is contactless with the axle sleeve surface that each maze tooth is arranged in bearing seal's labyrinth seal structure, has the clearance, and this kind of non-contact seals can avoid wearing and tearing, makes it be suitable for arbitrary high rotation speed.
3) The utility model provides an except that O shape circle among the labyrinth seal structure for bearing seal, all the other parts are the metalwork, metal seal and contactless, and its life can reach equipment retirement needn't change often.
4) The utility model provides a labyrinth seal structure for bearing seal intensity is high, and is durable, and sealed water-proof effects is good, and applicable a large amount of cooling water splash.
Drawings
FIG. 1 is a schematic diagram of a rubber V-shaped ring water seal structure;
FIG. 2 is a schematic view of a labyrinth seal structure for bearing sealing according to an embodiment of the present invention;
FIG. 3 is an enlarged fragmentary view of the upper half of FIG. 2;
FIG. 4 is an enlarged view of a portion of the lower half of FIG. 2;
fig. 5 is a partially enlarged view of a portion a in fig. 2.
Reference numerals of fig. 2 to 5: a rotating shaft 1; a shaft sleeve 2; a bearing groove 21; a first ring groove 22; a second annular groove 23; a third ring groove 24; a fourth ring groove 25; a first projection 26; the second projection 27; a third projection 28; a bearing seat 3; a bearing seat drain hole 3a; a first labyrinth ring 4; the first labyrinth teeth 41; the outer peripheral wall 42 of the first labyrinth ring; a first drain hole 4a; a second drain hole 4b; a seal plug 43; a second labyrinth ring 5; a second labyrinth tooth 51; a third labyrinth ring 6; a third labyrinth tooth 61; a groove 62 on the outer peripheral wall of the third labyrinth ring; a raised formation 64 on the third labyrinth ring; an O-ring mounting ring groove 63; the third drain hole 6a; the ring groove 6b; a bolt 7; a first O-ring 8; a second O-ring 9; a bearing 10.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically illustrated with reference to the accompanying drawings.
< example >
The embodiment provides a labyrinth seal structure for bearing seal, which is suitable for waterproof seal of a high-speed bearing, in order to prevent external cooling water from entering a bearing cavity. As shown in fig. 2, the labyrinth seal structure includes: the bearing comprises a shaft sleeve 2, a bearing seat 3, a first labyrinth ring 4, a second labyrinth ring 5, a third labyrinth ring 6, a bolt 7, a first O-shaped ring 8 and a second O-shaped ring 9, wherein except the first O-shaped ring 8 and the second O-shaped ring 9 which are rubber rings, the rest of the shaft sleeve 2, the bearing seat 3, the first labyrinth ring 4, the second labyrinth ring 5, the third labyrinth ring 6 and the bolt 7 all belong to metal pieces.
As shown in fig. 2, the shaft sleeve 2 is sleeved on the rotating shaft 1, an annular bearing groove 21 is formed in the outer wall of the shaft sleeve 2, and the bearing 10 is installed in the bearing groove 21 and embedded in the bearing seat 3. The first labyrinth ring 4 and the third labyrinth ring 6 are fixed on the bearing seat 3 through bolts 7, and the second labyrinth ring 5 is positioned in a gap position formed by the matching of the first labyrinth ring 4 and the third labyrinth ring 6. The inner ring of the bearing 10 is fixedly connected with the shaft sleeve 2, the outer ring of the bearing 10 is fixedly connected with the bearing seat 3, the inner ring and the outer ring of the bearing 10 can rotate relatively, when the bearing works, the shaft sleeve 2 rotates at a high speed along with the rotating shaft 1, and the first labyrinth ring 4, the second labyrinth ring 5 and the third labyrinth ring 6 are fixed on the bearing seat 3 and are in a static state.
As shown in fig. 3, the outer wall of the sleeve 2 has a first ring groove 22, a second ring groove 23, a third ring groove 24, and a fourth ring groove 25 formed in this order from the bearing groove 21 toward the sleeve end. The outer wall of the sleeve 2 is provided with a first protrusion 26 between the first and second annular grooves 22, 23. A second protrusion 27 is provided between the second ring groove 23 and the third ring groove 24, and the second protrusion 27 is formed with a hook structure extending toward the bearing side. The fourth ring groove 25 is provided with a third protrusion 28 on a side close to the end of the sleeve 2, and the third protrusion 28 is formed with a hook structure extending toward the bearing side.
The inner side of the first labyrinth ring 4 is provided with a first labyrinth tooth 41, and the first labyrinth tooth 41 is positioned in the first ring groove 22. The inner side of the second labyrinth ring 5 is provided with a second labyrinth tooth 51, and the second labyrinth tooth 51 is located in the second ring groove 23. The inner side of the third labyrinth ring 6 is provided with a third labyrinth tooth 61, and the third labyrinth tooth 61 is positioned in the fourth ring groove 25. The first labyrinth tooth 41, the second labyrinth tooth 51, and the third labyrinth tooth 61 have an L-shaped groove structure. The first labyrinth ring 4, the second labyrinth ring 5 and the third labyrinth ring 6 are not in contact with the surface of the shaft sleeve 2, wherein the surface clearance distances of the first labyrinth tooth 41, the second labyrinth tooth 51 and the third labyrinth tooth 61 and the shaft sleeve 2 are all 0.2-0.3 mm.
The peripheral walls of the first and third labyrinth rings 4 and 6 cooperate to form first catch grooves, which are formed by the cooperation of the peripheral wall 42 of the first labyrinth ring 4 and the grooves 62 on the peripheral wall of the third labyrinth ring 6, as shown in fig. 3.
As shown in fig. 4, the first labyrinth ring 4 is provided with a first drainage hole 4a and a second drainage hole 4b along the radial direction, the first drainage hole 4a is arranged in parallel with the second drainage hole 4b, and the first drainage hole 4a is arranged at a side close to the bearing seat 3. The first labyrinth ring 4 is provided with a through hole communicated with the first drainage hole 4a on the end surface contacted with the bearing seat 3. Bearing frame 3 is last to be seted up bearing frame wash port 3a, and bearing frame wash port 3a link up to the peripheral side from the bearing frame terminal surface, and first labyrinth ring 4 installs the back, and first drain hole 4a communicates with each other with bearing frame wash port 3a through-hole. The port at the outer peripheral position of the first drain hole 4a is closed with a closing plug 43. This first drain hole 4a communicates bearing frame wash port 3a and realizes the delivery port diversion, and its purpose is in order to stagger with the delivery port of two wash ports of second wash port 4b, third wash port 6a, and in actual work, the delivery port of this three routes drainage all need connect the drainage pipe, and the delivery port diversion of this first drain hole 4a can make three routes drainage pipe rationally distributed in the space. In addition, the leakage water entering the innermost first drainage hole 4a is already a very small amount, the drainage hole passing through the small hole of the bearing seat drainage hole 3a can be basically drained, and if a special condition occurs, the blocking plug 43 can still be opened, namely, the position of the blocking plug 43 can still be used as a spare water outlet.
As shown in fig. 4, the second labyrinth ring 5 corresponds to a port position of the second water discharge hole 4b installed at the first labyrinth ring 4.
The inner side of the third labyrinth ring 6 is provided with a projecting structure 64 on the side contacting the second labyrinth ring 5, and the projecting structure 64 is used for pressing the second labyrinth ring 5. The inner side of the third labyrinth ring 6 is provided with a ring groove 6b, and the third labyrinth ring 6 is provided with a third drainage hole 6a along the radial direction, and the third drainage hole 6a is communicated with the ring groove 6 b. After the third labyrinth ring 6 is installed, the third drain hole 6a corresponds to the third ring groove 24.
As shown in fig. 2, further, a first O-ring 8 may be disposed between the first labyrinth ring 4 and the bearing seat 3; a second O-ring 9 may also be provided between the third labyrinth ring 6 and the first labyrinth ring 4. Referring to fig. 5, the third labyrinth ring 6 has an O-ring mounting groove 63 on a surface thereof contacting the first labyrinth ring 4, and the second O-ring 9 is inserted into the O-ring mounting groove 63. The first O-ring 8 is mounted in the same manner as the second O-ring 9 and will not be described in detail.
The labyrinth seal structure for bearing sealing of the present embodiment works as follows: when the machine runs at high speed, external cooling water is needed for washing. Referring to fig. 3 and 4, most of the water during washing is collected in the first collecting tank formed by the outer peripheral walls of the first labyrinth ring 4 and the third labyrinth ring 6, and then discharged along the annular structure of the first collecting tank to the lower side. Most of the water is collected by the first collecting groove, and some water will enter at the position of the fourth groove 25 of the shaft sleeve, and firstly, most of the water will be collected in the L-shaped groove structure formed by the third labyrinth tooth 61 of the third labyrinth ring, and then guided to the lower side along the annular structure of the third labyrinth tooth 61 to be discharged. Further, if there is water liquid continuously leaking to the inside, the water liquid will reach the third ring groove 24 of the shaft sleeve, and the water liquid collected in the third ring groove 24 will flow to the ring groove 6b of the third labyrinth ring, and then will be discharged through the third water discharge hole 6a of the third labyrinth ring. Further, if there is water liquid continuously leaking to the inside, the water liquid will reach the second labyrinth teeth 51 of the second labyrinth ring and collect in the L-shaped groove structure of the second labyrinth teeth 51, and then the water liquid will be discharged through the second water discharge hole 4b of the first labyrinth ring. Furthermore, if there is still water liquid leaking to the inside, the water liquid will reach the first labyrinth tooth 41 of the first labyrinth ring and collect in the L-shaped groove structure of the first labyrinth tooth 41, and then the water liquid will flow into the first water discharge hole 4a of the first labyrinth ring, and then be guided to the bearing seat water discharge hole 3a on the bearing seat, and be discharged from the outer end of the bearing seat water discharge hole 3 a. Therefore, external washing water is sealed through multiple channels, and leakage is reduced to the maximum extent.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. A labyrinth seal arrangement for a bearing seal, comprising: the bearing comprises a shaft sleeve, a bearing seat, a first labyrinth ring, a second labyrinth ring, a third labyrinth ring and a bolt;
the bearing is arranged in the bearing groove and embedded in the bearing seat;
the outer wall of the shaft sleeve is sequentially provided with a first ring groove, a second ring groove, a third ring groove and a fourth ring groove from the bearing groove to the end part of the shaft sleeve;
the first labyrinth ring and the third labyrinth ring are fixed on the bearing seat through bolts, and the second labyrinth ring is positioned in a gap formed by matching the first labyrinth ring and the third labyrinth ring;
a first labyrinth tooth is arranged on the inner side of the first labyrinth ring and is positioned in the first ring groove;
a second labyrinth tooth is arranged on the inner side of the second labyrinth ring and is positioned in the second ring groove;
and a third labyrinth tooth is arranged on the inner side of the third labyrinth ring and is positioned in the fourth ring groove.
2. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
wherein the first labyrinth tooth, the second labyrinth tooth and the third labyrinth tooth are all provided with L-shaped groove structures.
3. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
the first ring groove is formed in the outer wall of the shaft sleeve, and a first protrusion is arranged between the first ring groove and the second ring groove;
a second bulge is arranged between the second ring groove and the third ring groove, and a hook structure extending towards the bearing side is formed on the second bulge;
the fourth annular is provided with the third arch on being close to axle sleeve tip one side, the third arch is formed with the hook structure that extends to the bearing side.
4. The labyrinth sealing structure for a bearing seal as set forth in claim 1, wherein:
wherein, the peripheral walls of the first labyrinth ring and the second labyrinth ring are matched to form a first collecting groove.
5. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
the first labyrinth ring is provided with a first drainage hole and a second drainage hole along the radial direction, and the first drainage hole and the second drainage hole are arranged in parallel;
the end face of the first labyrinth ring, which is in contact with the bearing seat, is provided with a through hole communicated with the first drainage hole;
and a bearing seat drain hole communicated with the through hole is formed in the bearing seat.
6. The labyrinth seal structure for a bearing seal as recited in claim 5, wherein:
wherein, the second labyrinth ring is correspondingly arranged at the port position of the second drain hole.
7. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
and the third labyrinth ring is provided with a third drain hole along the radial direction, and the third drain hole corresponds to the third ring groove in position.
8. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
a first O-shaped ring is arranged between the first labyrinth ring and the bearing seat;
and a second O-shaped ring is arranged between the third labyrinth ring and the first labyrinth ring.
9. The labyrinth seal for a bearing seal as recited in claim 1, wherein:
wherein none of the first labyrinth ring, the second labyrinth ring, and the third labyrinth ring is in contact with a surface of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222199122.0U CN218031113U (en) | 2022-08-19 | 2022-08-19 | Labyrinth seal structure for bearing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222199122.0U CN218031113U (en) | 2022-08-19 | 2022-08-19 | Labyrinth seal structure for bearing seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218031113U true CN218031113U (en) | 2022-12-13 |
Family
ID=84348398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222199122.0U Active CN218031113U (en) | 2022-08-19 | 2022-08-19 | Labyrinth seal structure for bearing seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218031113U (en) |
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2022
- 2022-08-19 CN CN202222199122.0U patent/CN218031113U/en active Active
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