CN210240557U - Sealing device for preventing sealing surface from being damaged - Google Patents
Sealing device for preventing sealing surface from being damaged Download PDFInfo
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- CN210240557U CN210240557U CN201921063422.8U CN201921063422U CN210240557U CN 210240557 U CN210240557 U CN 210240557U CN 201921063422 U CN201921063422 U CN 201921063422U CN 210240557 U CN210240557 U CN 210240557U
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- floating ring
- runner
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- rotor
- seal
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Abstract
The utility model discloses a sealing device for preventing sealing surface damage, wherein the rotating surface of a rotor is in clearance fit with the sealing surface of a floating ring, a groove is arranged on the outer circumference of the floating ring, a floating ring connecting cavity is sleeved outside the floating ring, a permanent magnet is arranged in one side end surface of the floating ring, the side end surface of the floating ring is connected with the inner side end surface of the floating ring connecting cavity in an attracting way through the permanent magnet, and a plurality of wheel rotating frames are arranged in the circumference of the floating ring; the runner frame comprises a connecting rod and a runner supporting plate which are connected into an integrated structure, the connecting rod is fixedly connected with the floating ring, a runner shaft is arranged in the runner supporting plate positioned on the rotating surface side of the rotor, a runner cavity is arranged on the outer circumference of the runner shaft, and a runner inner sleeve limiting boss is arranged on the periphery of the bottom of the runner shaft; the runner is sleeved on the runner shaft and fixed. The utility model discloses can realize the effective seal of the whole operation period of large-scale commentaries on classics machine, calculate according to the annual consumption volume of the sealed industry of present large-scale commentaries on classics machine, can generate the lasting effective sealed product of large-scale commentaries on classics machine of annual sales volume 1-5 million yuan at least.
Description
Technical Field
The utility model relates to a large-scale motor sealing technical field especially relates to a sealing device who prevents sealed face damage.
Background
Different working areas of a large-scale rotating machine (the diameter of a rotor shaft is generally larger than 100mm) can be filled with different media due to production requirements, and the different areas are often isolated due to process requirements or environmental protection and human health protection requirements, and because the existing bearing bush technology (oval wedge-shaped oil wedge bush) is limited, the rotor rotates and the axis of the rotating machine drifts while the other parts of the rotating machine are relatively static, so that a floating ring seal is adopted at present, and the figure 6 shows that the rotating machine is suitable for being used in a large-scale rotating machine. When the axis of the floating ring type seal drifts, irreversible abrasion exists between the rotating surface of the rotor 1 and the floating ring 2. Because the diameter of the rotor of the large-scale rotating machine is generally large and the linear velocity is high, the abrasion rate between the rotating surface of the rotor 1 and the floating ring 2 is fast, generally, in the period of one overhaul interval (6 months-4 years), the gap between the floating ring 2 is abraded and exceeds the standard within 72 hours in the early stage of initial operation, and the sealing effect of the floating ring 2 is increasingly poor along with the time lapse, so that the realization of durable and effective sealing of the large-scale rotating machine is always a difficult problem in the industry.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the wearing and tearing problem between rotor rotating surface and seal, provide a sealing device who prevents sealed face damage, realize that large-scale commentaries on classics machine is lasting effectively sealed.
In order to solve the technical problem, the technical scheme of the utility model is that: the sealing device for preventing the sealing surface from being damaged comprises a rotor, a floating ring and a floating ring connecting cavity, wherein the rotating surface of the rotor is in clearance fit with the sealing surface of the floating ring, a groove is formed in the outer circumference of the floating ring, the floating ring connecting cavity is sleeved outside the floating ring, a permanent magnet is arranged in the end surface of one side of the floating ring, the end surface of the side of the floating ring is in suction connection with the end surface of the inner side of the floating ring connecting cavity through the permanent magnet, and a plurality of wheel rotating frames are arranged in the circumference of the floating ring; the runner frame comprises a connecting rod and a runner supporting plate which are connected into an integrated structure, the connecting rod is fixedly connected with the floating ring, a runner shaft is arranged in the runner supporting plate positioned on the rotating surface side of the rotor, a runner cavity is arranged on the outer circumference of the runner shaft, and a runner inner sleeve limiting boss is arranged on the periphery of the bottom of the runner shaft; the runner is sleeved on the runner shaft and fixed.
Furthermore, the floating ring connecting cavity is connected with the rotating machine body through a flange.
Furthermore, the radial movement distance of the floating ring in the floating ring connecting cavity is greater than the axial drift distance of the rotor.
Furthermore, the floating ring is made of non-ferromagnetic material.
Furthermore, the friction force of the attraction is larger than the weight of the floating ring.
Further, the end of the connecting rod extends out of the groove of the floating ring and is welded or in threaded connection.
Furthermore, the rotating wheel is sleeved on the rotating wheel shaft and riveted or welded.
Furthermore, a sealing surface of the floating ring positioned on one side of the runner frame is provided with sealing teeth and brush type seals.
Furthermore, sealing teeth and brush type seals are arranged on sealing surfaces of the floating rings on two sides of the rotary wheel frame.
The utility model discloses can realize the effective seal of the whole operation period of large-scale commentaries on classics machine, calculate according to the annual consumption volume of the sealed industry of present large-scale commentaries on classics machine, can generate the lasting effective sealed product of large-scale commentaries on classics machine of annual sales volume 1-5 million yuan at least.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 4 is a schematic structural view of the wheel carriage;
FIG. 5 is a view from the A-A direction of FIG. 4;
fig. 6 is a schematic structural diagram of the background art.
Wherein: 1-rotor, 2-floating ring, 3-floating ring connecting cavity, 4-permanent magnet, 5-runner, 6-runner frame, 7-sealing tooth, 8-brush seal, 9-connecting rod, 10-runner supporting plate, 11-runner cavity and 12-runner shaft.
Detailed Description
The following description of the present invention will be made with reference to the accompanying drawings 1-5.
Example one
The sealing device for preventing the sealing surface from being damaged comprises a rotor 1, a floating ring 2 and a floating ring connecting cavity 3, wherein the rotating surface of the rotor 1 is in clearance fit with the sealing surface of the floating ring 2, a groove is formed in the outer circumference of the floating ring 2, the floating ring connecting cavity 3 is sleeved outside the floating ring 2, a permanent magnet 4 is arranged in the end surface of one side of the floating ring 2, the end surface of the side of the floating ring 2 is connected with the end surface of the inner side of the floating ring connecting cavity 3 in a suction way through the permanent magnet 4, a plurality of wheel rotating frames 6 are arranged in the circumference of the floating ring 2, and a support shaft is vertical to the rotating; the runner frame 6 comprises a connecting rod 9 and a runner support plate 10 which are connected into an integral structure, the connecting rod 9 is fixedly connected with the floating ring 2, a runner shaft 12 is arranged in the runner support plate 10 positioned on the rotating surface side of the rotor 1, a runner cavity 11 is arranged on the outer circumference of the runner shaft 12, and a runner inner sleeve limiting boss is arranged around the bottom of the runner shaft 12; the rotating wheel 5 is sleeved on the rotating wheel shaft 12 and fixed, and the distance between the rotating wheel 5 and the rotating surface of the rotor 1 is equal to the sealing gap of the floating ring 2.
The floating ring connecting cavity 3 is connected with the rotary machine body through a flange.
The radial movement distance of the floating ring 2 in the floating ring connecting cavity 3 is larger than the axial drift distance of the rotor 1.
The floating ring 2 is made of non-ferromagnetic material.
The friction force of the attraction is larger than the weight of the floating ring 2, and if the position of the rotor 1 is not changed, the floating ring 2 and the rotor 1 are in powerless contact due to the existence of a sealing gap.
The end of the connecting rod 9 extends out of the groove of the floating ring 2 and is welded or screwed.
The runner 5 is sleeved on the runner shaft 12 and riveted or welded.
When the rotor 1 shifts, only rolling action occurs between the rotating surface of the rotor 1 and the rotating wheel 5, and sliding friction does not exist, so that the floating ring 2 can be pushed to a new position by the rotating surface of the rotor 1 under the condition of not being abraded, effective sealing is kept, the sealing can be continuously pushed to the next new position by the rotating surface of the rotor 1, and therefore the sealing device is characterized by effective sealing, no abrasion shifting, effective sealing and no abrasion shifting … …, and therefore lasting effective sealing of large-scale transfer machines can be achieved, and the blank of lasting effective sealing of domestic large-scale transfer machines is filled.
Example two
The sealing surface of the floating ring 2 positioned on one side of the runner frame 6 is provided with a sealing tooth 7 and a brush type seal 8.
Compared with a basic type, the type seal has the advantages that part of the seal surface is reduced, the seal teeth 7 and the brush seal 8 are additionally arranged, the seal teeth 7 have tooth cavity structures, so that the seal has a good seal effect on pressure splashing liquid or pressure gas, and the brush seal 8 and the rotor 1 are in micro-contact seal, so that liquid leakage along the surface of the rotor 1 can be effectively prevented.
EXAMPLE III
Sealing teeth 7 and brush seals 8 are arranged on the sealing surfaces of the floating rings 2 positioned on the two sides of the rotary wheel frame 6.
Compared with the basic type, the sealing surface is cancelled, the combined sealing of the sealing teeth 7 and the brush type seal 8 is changed, and the sealing device has better effect on gas pressure sealing and sealing under the condition of larger liquid leakage.
Above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the design of the present invention, equivalent replacement or change should be covered within the protection scope of the present invention.
Claims (9)
1. The sealing device for preventing the sealing surface from being damaged comprises a rotor (1), a floating ring (2) and a floating ring connecting cavity (3), and is characterized in that the rotating surface of the rotor (1) is in clearance fit with the sealing surface of the floating ring (2), a groove is formed in the outer circumference of the floating ring (2), the floating ring connecting cavity (3) is sleeved outside the floating ring (2), a permanent magnet (4) is arranged in the end surface of one side of the floating ring (2), the end surface of the side of the floating ring (2) is connected with the end surface of the inner side of the floating ring connecting cavity (3) in an attracting mode through the permanent magnet (4), and a plurality of runner frames (6) are arranged in the circumference of the floating ring (2); the runner frame (6) comprises a connecting rod (9) and a runner supporting plate (10) which are connected into an integrated structure, the connecting rod (9) is fixedly connected with the floating ring (2), a runner shaft (12) is arranged in the runner supporting plate (10) positioned on the rotating surface side of the rotor (1), a runner cavity (11) is formed in the outer circumference of the runner shaft (12), and a runner inner sleeve limiting boss is arranged on the periphery of the bottom of the runner shaft (12); the rotating wheel (5) is sleeved on the rotating wheel shaft (12) and fixed.
2. A seal assembly for protecting a seal face from damage as claimed in claim 1, wherein said floating ring connecting chamber (3) is flanged to the rotor body.
3. A seal assembly for protecting a seal face from damage according to claim 1, wherein the floating ring (2) is located in the floating ring connection chamber (3) with a radial play distance greater than the axial drift distance of the rotor (1).
4. A seal assembly for protecting a seal face against damage as claimed in claim 1, wherein said floating ring (2) is of non-ferromagnetic material.
5. A seal arrangement for protecting a sealing surface against damage according to claim 1, wherein the frictional force of the engagement is greater than the weight of the floating ring (2).
6. A seal arrangement against damage to the sealing surfaces according to claim 1, characterized in that the ends of the tie rods (9) extend out of the grooves of the floating ring (2) and are welded or screwed.
7. A seal arrangement for protecting seal faces against damage according to claim 1, characterised in that the runner (5) is fitted around the runner shaft (12) and riveted or welded thereto.
8. A sealing device for preventing a sealing surface from being damaged according to claim 1, wherein a sealing tooth (7) and a brush seal (8) are provided on the sealing surface of the floating ring (2) on the side of the runner frame (6).
9. A sealing device for preventing sealing surface damage according to claim 1, characterized in that the sealing surface of the floating ring (2) located at both sides of the runner frame (6) is provided with sealing teeth (7) and brush seals (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921063422.8U CN210240557U (en) | 2019-07-09 | 2019-07-09 | Sealing device for preventing sealing surface from being damaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921063422.8U CN210240557U (en) | 2019-07-09 | 2019-07-09 | Sealing device for preventing sealing surface from being damaged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210240557U true CN210240557U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921063422.8U Active CN210240557U (en) | 2019-07-09 | 2019-07-09 | Sealing device for preventing sealing surface from being damaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210240557U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219992A (en) * | 2019-07-09 | 2019-09-10 | 大连保税区华鸿工业技术有限公司 | Prevent the sealing device of sealing face damage |
-
2019
- 2019-07-09 CN CN201921063422.8U patent/CN210240557U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219992A (en) * | 2019-07-09 | 2019-09-10 | 大连保税区华鸿工业技术有限公司 | Prevent the sealing device of sealing face damage |
| CN110219992B (en) * | 2019-07-09 | 2024-06-14 | 大连保税区华鸿工业技术有限公司 | Sealing device for preventing damage to sealing surface |
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