CN203730762U - High-pressure large-torque axial seal device - Google Patents
High-pressure large-torque axial seal device Download PDFInfo
- Publication number
- CN203730762U CN203730762U CN201420092826.0U CN201420092826U CN203730762U CN 203730762 U CN203730762 U CN 203730762U CN 201420092826 U CN201420092826 U CN 201420092826U CN 203730762 U CN203730762 U CN 203730762U
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- CN
- China
- Prior art keywords
- filler
- gland
- level
- casing
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a high-pressure large-torque axial seal device which comprises a transmission shaft. A secondary filler box, secondary filler and a secondary gland are disposed on the outer periphery of the upper portion of the transmission shaft. A primary filler box, primary filler, an oil distribution ring and a primary gland are disposed on the outer periphery of the lower portion of the transmission shaft. The lower end of the secondary filler box is inserted into the primary filler box and connected with the same through a middle nut stud. Each of the secondary filler box and the primary filler box is provided with a lubricant inlet. The high-pressure large-torque axial seal device has the advantages that the defect that when common filter seals in the prior art are used for dynamic sealing, abrasion caused by friction directly influences the sealing performance and service life of the filler seal is overcome, the seal device is compact in structure, good in sealing effect, long in service life and highly stable in operation, even distribution of radial sealing force and lubrication are facilitated by stage-by-stage pressure distribution and lubrication, and abrasion is reduced.
Description
Technical field
The utility model relates to a kind of high pressure and large torque axial sealer.
Background technique
Packing seal is generally on casing, to make stuffing box, to be rich in compressibility and elastic filler is put into it, rely on the axial pressing force of gland to be converted into radial seal power, utilize the wearing and tearing of the resiliently deformable compensating sealing surface of stuffing box packing, sealed space is hedged off from the outer world, stop up leakage-gap, thereby stop medium to leak outside, play seal action, it is widely used in the sealing of rotation, reciprocal and various state of rest.There is simple in structure, operation and change convenient, material source extensively, easy processing, with low cost, applied widely, seal the features such as reliable.But during as motive sealing, its shortcoming is also just because of the wearing and tearing of the resiliently deformable compensating sealing surface by filler, and therefore wearing and tearing are outstanding problems in packing seal.The wearing and tearing that friction causes directly have influence on gland sealed sealability and working life, comprise the wearing and tearing of filler and rotating shaft, therefore, when leakage rate increases, conventionally need regularly to compress the requirement that gland reaches sealing.Lubricating of the wear resistance of wearing and tearing and structural design, filler and the axle of stuffing box itself, filler is relevant with the rotating speed of cooling, axle etc.
Summary of the invention
In order to overcome in prior art common fillers, be sealed in while being used in motive sealing, the wearing and tearing that friction causes directly have influence on the problem in gland sealed sealability and working life, the utility model provides a kind of high pressure and large torque axial sealer, the compact structure of this high pressure and large torque axial sealer, dividing potential drop is conducive to the uniform of radial seal power with lubricated with lubricated step by step, reduce wear, the stability of good sealing effect, long service life, operation is high.
The utility model solves the technological scheme that its technical problem adopts: comprise transmission shaft, upper periphery at transmission shaft is provided with secondary filler casing, secondary filler and secondary gland, secondary filler is arranged in secondary filler casing, upper end is compressed by secondary gland, between secondary filler casing and secondary gland, by upper cap nut double-screw bolt, is connected; Lower, outer perimeter at transmission shaft is provided with one-level filler casing, one-level filler, oil distributing ring and one-level gland, one-level filler and oil distributing ring are successively set in one-level filler casing up and down, lower end is compressed by one-level gland, between one-level filler casing and one-level gland, by lower nut double-screw bolt, is connected; Secondary filler casing lower end is plugged in one-level filler casing, between the two by nut double-screw bolt be connected; On secondary filler casing and one-level filler casing, be equipped with lubricating oil inlet.
The surface of contact of secondary gland and oil distributing ring and secondary filler, one-level filler is all with the design of tapering.
The utility model is by above-mentioned specific design, its compact structure, and dividing potential drop is conducive to the uniform of radial seal power with lubricated with lubricated step by step, reduces wear, and has advantages of that the stability of good sealing effect, long service life, operation is high.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, detailed content of the present utility model is described.
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
As shown in the figure, the utility model comprises transmission shaft 1, upper periphery at transmission shaft 1 is provided with secondary filler casing 2, secondary filler 3 and secondary gland 4, secondary filler 3 is arranged in secondary filler casing 2, upper end is compressed by secondary gland 4, and secondary filler casing 2 is connected by upper cap nut double-screw bolt 5 with 4, secondary gland; Lower, outer perimeter at transmission shaft 1 is provided with one-level filler casing 6, one-level filler 7, oil distributing ring 8 and one-level gland 9, one-level filler 7 and oil distributing ring 8 are successively set in one-level filler casing 6 up and down, lower end is compressed by one-level gland 9, and one-level filler casing 6 is connected by lower nut double-screw bolt 10 with 9, one-level gland; Secondary filler casing 2 lower ends are plugged in one-level filler casing 6, between the two by nut double-screw bolt 11 be connected; On secondary filler casing 2 and one-level filler casing 6, be equipped with lubricating oil inlet 12.The surface of contact of secondary gland 4 and oil distributing ring 8 and secondary filler 3, one-level filler 7 is all with the design of tapering 13.The utility model high pressure and large torque axial sealer is a kind of stirring shaft of high pressure, high-temperature stirring equipment and a kind of seal arrangement between the stirring port of still top of can be applicable to, and is certainly also not limited to and only mates said apparatus use.Its applying working condition condition is: in still, working pressure is that 5.2MPa, operating temperature 260 are spent, medium is sodium aluminate solution and hot alkaline steam etc., and the power of stirring apparatus configuration is that 45Kw, rotating speed 30rpm, stirring rated torque are 14325Nm, diameter of axle 160mm.Because the rated torque of this stirring apparatus is large, and temperature is high, and the diameter of axle is large, adopt magnetic seal very difficult, and volume is large, expensive, and this temperature magnetic easily lost efficacy, bearing grease easily runs off, and bearing is fragile, and inconvenience etc. is changed in maintenance.And mechanical seal also exists complex structure, seal ring life-span short, expensive, inconvenient situation is changed in maintenance.The casing of the utility model high pressure and large torque axial sealer adopts upper and lower two-layer configuration design; dividing potential drop is with lubricated step by step; effectively guarantee filler pre-pressing and lubricated needs; improved the reliability of sealing; under use state; lubricant oil is injected by lubricating oil inlet 12; filler adopts wear-resistant packing; this packing is that thermosetting property high-performance synthetic line floods special oiling agent; in braiding process, again flood high-quality PTFE emulsion, have 1.. high strength, wear-resistant; but do not hinder axle, easily cutting; 2.. thermally-stabilised, low-thermal-expansion, the dimensionally stable in the situation that of temperature and pressure alternation; 3.. outstanding resistant to chemical media, without spot corrosion, without sclerosis, resistant to elevated temperatures feature; Thermal spraying chromium oxide is taked on the surface that transmission shaft 1 coordinates with filler, and surface hardness reaches 1000HV, and grinding is to degree of finish Ra0.4um, reduces the wearing and tearing of transmission shaft 1 matching surface and filler, improves working life and the sealing of filler.Realization meet working pressure 5.2MPa, 260 ℃ of temperature, rotating speed 30 r p m, the diameter of axle 160 m m, seal request.Above-described embodiment is described the preferred implementation of the utility model high pressure and large torque axial sealer; not the design of model utility and scope are limited; do not departing under the prerequisite of the utility model scheme; various external form modification and improvement that those skilled in the art make the technical solution of the utility model, all should fall into the protection domain of the utility model high pressure and large torque axial sealer.
Claims (2)
1. a high pressure and large torque axial sealer, comprise transmission shaft, it is characterized in that being provided with secondary filler casing (2), secondary filler (3) and secondary gland (4) in the upper periphery of transmission shaft (1), secondary filler (3) is arranged in secondary filler casing (2), upper end is compressed by secondary gland (4), between secondary filler casing (2) and secondary gland (4), by upper cap nut double-screw bolt (5), is connected; Lower, outer perimeter at transmission shaft (1) is provided with one-level filler casing (6), one-level filler (7), oil distributing ring (8) and one-level gland (9), one-level filler (7) and oil distributing ring (8) are successively set in one-level filler casing (6) up and down, lower end is compressed by one-level gland (9), between one-level filler casing (6) and one-level gland (9), by lower nut double-screw bolt (10), is connected; Secondary filler casing (2) lower end is plugged in one-level filler casing (6), between the two by nut double-screw bolt (11) be connected; On secondary filler casing (2) and one-level filler casing (6), be equipped with lubricating oil inlet (12).
2. high pressure and large torque axial sealer according to claim 1, the surface of contact that it is characterized in that secondary gland (4) and oil distributing ring (8) and secondary filler (3), one-level filler (7) is all with the design of tapering (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092826.0U CN203730762U (en) | 2014-03-03 | 2014-03-03 | High-pressure large-torque axial seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420092826.0U CN203730762U (en) | 2014-03-03 | 2014-03-03 | High-pressure large-torque axial seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730762U true CN203730762U (en) | 2014-07-23 |
Family
ID=51200838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420092826.0U Expired - Fee Related CN203730762U (en) | 2014-03-03 | 2014-03-03 | High-pressure large-torque axial seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730762U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114224A (en) * | 2018-09-29 | 2019-01-01 | 中国航发沈阳发动机研究所 | Main shaft seal force limiting device |
-
2014
- 2014-03-03 CN CN201420092826.0U patent/CN203730762U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114224A (en) * | 2018-09-29 | 2019-01-01 | 中国航发沈阳发动机研究所 | Main shaft seal force limiting device |
| CN109114224B (en) * | 2018-09-29 | 2020-08-11 | 中国航发沈阳发动机研究所 | Main shaft sealing force limiting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20150303 |
|
| EXPY | Termination of patent right or utility model |