CN200949550Y - Rotary shaft sealing device of centrifugal pump - Google Patents
Rotary shaft sealing device of centrifugal pump Download PDFInfo
- Publication number
- CN200949550Y CN200949550Y CN 200620139510 CN200620139510U CN200949550Y CN 200949550 Y CN200949550 Y CN 200949550Y CN 200620139510 CN200620139510 CN 200620139510 CN 200620139510 U CN200620139510 U CN 200620139510U CN 200949550 Y CN200949550 Y CN 200949550Y
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- CN
- China
- Prior art keywords
- oil
- sealing
- sleeve
- seal
- axle sleeve
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 59
- 238000012856 packing Methods 0.000 claims abstract description 15
- 210000004907 gland Anatomy 0.000 claims description 14
- 239000004519 grease Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Devices (AREA)
Abstract
A rotation axis sealing device of a centrifugal pump relates to a rotation axis sealing device of a centrifugal pump dynamic input axis and a pump head worm-shell body for transportation used in a flowing medium. The utility model has a characteristic of a structure which comprises a output shaft sleeve, a sealing sleeve which forms a sealing cavity with the output shaft sleeve, a packing set in the sealing cavity, a sealing press ring, an oil sealed sleeve, a frame oil seal, an 'O' shape cycle and a sealing oil sealed ring. The utility model uses ingenious structure design, the filler and the frame oil seal are combined together, and an oil of large viscosity, water resistance, acid and alkali resistance and high temperature resistance is injected into a gap of the oil seal. The filler can block big particles, the oil seal can prevent water and fine particles to pass, and the oil can have a function of lubrication and assisted seal.
Description
Technical field
A kind of sealing device for rotary shaft of centrifugal pump relates to a kind of centrifugal pump power input shaft of the conveying usefulness that is used for flowing medium and the rotary dynamic seal device of pump head volute body.
Centrifugal pump as the conveying usefulness of flowing medium is widely used in industry, agricultural, national defence and scientific research field.At present, the rotation axis seal of centrifugal pump mainly contains mechanical seal and two kinds of forms of packing seal.The mechanical seal structure complexity, processing precise degree height costs an arm and a leg, the precision of pump that corresponding requirement is joined wants high, is engaged in mechanical seal installation maintainer's technical quality and wants height, because machining accuracy is low, in actual applications, the effect of mechanical seal use and bad.Packing seal is as a kind of traditional pump seal form, and is simple in structure because of it, and maintenance is changed convenient, and is cheap, and is used widely, but there is the defective of weak point in working life, sealing effect difference in this sealing, has been difficult to adapt to the no-leak control demand of enterprise.
Summary of the invention
The objective of the invention is the deficiency that exists at above-mentioned prior art, provide a kind of simple in structure, maintenance is convenient, cheap, and the sealing device for rotary shaft of the centrifugal pump of long service life, good sealing effect.
The objective of the invention is to be achieved through the following technical solutions.
A kind of sealing device for rotary shaft of centrifugal pump is characterized in that its structure composition comprises:
Output sleeve-this axle sleeve is the steel axle sleeve that axial plane matches with the running shaft output terminal and connects in;
Stuffing box gland-sealing cover is axle sleeve structure, and cover face has an inner convex platform in it, and the external axle sleeve face of the perpendicular end surface of boss end and homonymy and pump head be embedded to cooperate connection, and stuffing box gland internal axle sleeve and axle sleeve inner convex platform form a Seal cage; It is affixed with stuffing box gland and pump head that external axle sleeve face middle part has an outer lug boss, bolt to pass outer lug boss;
Packing-this packing is positioned at the axle sleeve Seal cage, closely cooperates with inner convex platform inner side surface and interior cover face;
Seal joint-this pressure ring is positioned at the axle sleeve Seal cage, tightly invests the packing end;
Its interior cover of oil-sealing sleeve-this oil-sealing sleeve has been worn curved cavity, and the vertical sleeve face of its cavity end connects with seal joint, and output sleeve circumferential surface and formation one seal oil chamber; On the oil-sealing sleeve circumferential surface, have a groove; The oil-sealing sleeve the other end has a boss, has fixing bolt to pass boss oil-sealing sleeve is fixed on the stuffing box gland;
Outside framework oil seal-this outside framework oil seal is positioned at oil-sealing sleeve, is filled with sealing oil at skeleton;
O type circle-this circle is positioned at the groove on the oil-sealing sleeve circumferential surface;
Sealing oil seal ring--this oil seal ring is positioned between outside framework oil seal inner ring surface and axle sleeve circumferential surface.
The utility model adopts structural design dexterously, filler and outside framework oil seal are combined, again that viscosity is big, water-fast, acid resistant alkali, resistant to elevated temperatures grease inject the oil sealing gap, filler can stop larger particles, oil sealing can prevent that sealing and fine particle pass through, and grease can play the effect of lubricated and auxiliary seal.
Description of drawings
Fig. 1 is the agent structure sectional view of this rotation axis seal.
Embodiment
A kind of sealing device for rotary shaft of centrifugal pump, its structure is formed and comprised: this axle sleeve of output sleeve 4-is the steel axle sleeve that axial plane matches with the running shaft output terminal and connects in; Stuffing box gland 9-sealing cover is axle sleeve structure, and cover face has an inner convex platform in it, and the external axle sleeve face of the perpendicular end surface of boss end and homonymy and pump head 10 be embedded to cooperate connection, and stuffing box gland internal axle sleeve and axle sleeve inner convex platform form a Seal cage; It is affixed with stuffing box gland and pump head that external axle sleeve face middle part has an outer lug boss, bolt 11 to pass outer lug boss; This packing of packing 8-is positioned at the axle sleeve Seal cage, closely cooperates with inner convex platform inner side surface and interior cover face; This pressure ring of seal joint 1-is positioned at the axle sleeve Seal cage, tightly invests the packing end; Its interior cover of this oil-sealing sleeve of oil-sealing sleeve 3-has been worn curved cavity, and the vertical sleeve face of its cavity end connects with seal joint, and output sleeve circumferential surface and formation one seal oil chamber; On the oil-sealing sleeve circumferential surface, have a groove; The oil-sealing sleeve the other end has a boss, has fixing bolt to pass boss oil-sealing sleeve is fixed on the stuffing box gland; This outside framework oil seal of outside framework oil seal 2-is positioned at oil-sealing sleeve, is filled with sealing oil at skeleton; This circle of O type circle 7-is positioned at the groove on the oil-sealing sleeve circumferential surface; This oil seal ring of sealing oil seal ring 5--is positioned between outside framework oil seal inner ring surface and axle sleeve circumferential surface; Grease can directly be annotated oil seal ring 5 places by this hole in this hole of grease hand-hole 6-on stuffing box gland.
The seal process of sealing part is achieved like this: when centrifugal pump in when work, the impeller high speed rotating, the medium that is transferred in the pump head spiral case will produce pressure, this pressure can be sent to the appointed place from pump discharge along pipeline with medium, this is that we want the purpose that reaches, but this pressure also cause the medium that is transferred along motive sealing place of spiral case and axle to external leakage, at this moment our Sealing just begins to play a role.At first medium will be located to external leakage by packing (filler), we have carried out prestressing to packing during installation, medium is stoped at the packing place, particle bigger in the medium is blocked, have only a spot of liquid and molecule by packing and the axle sleeve gap between only, this moment, the pressure of leaking medium also decreased; Medium will continue just must pass through to external leakage: the 1. gap between oil-sealing sleeve and the stuffing box gland, and there is O shape circle to seal between oil-sealing sleeve and the stuffing box gland, and is static seal herein, good sealing effect, medium can not be from passing through here.2. the moving junction plane place of oil seal lip and axle sleeve, because multiple tracks oil seal lip seal action, and the auxiliary seal and the lubrication that are full of the high viscosity lubricating grease in oil sealing gap, can make the leakage rate of medium drop to minimum.Visual actual conditions compress adjustment to packing in the using process, with oil gun by oil hole after-teeming lubricating grease in oil-sealing sleeve, thereby guarantee long lifetime of sealing part.
Claims (1)
1. the sealing device for rotary shaft of a centrifugal pump is characterized in that its structure is formed to comprise:
Output sleeve-this axle sleeve is the steel axle sleeve that axial plane matches with the running shaft output terminal and connects in;
Stuffing box gland-sealing cover is axle sleeve structure, and cover face has an inner convex platform in it, and the external axle sleeve face of the perpendicular end surface of boss end and homonymy and pump head be embedded to cooperate connection, and stuffing box gland internal axle sleeve and axle sleeve inner convex platform form a Seal cage; It is affixed with stuffing box gland and pump head that external axle sleeve face middle part has an outer lug boss, bolt to pass outer lug boss;
Packing-this packing is positioned at the axle sleeve Seal cage, closely cooperates with inner convex platform inner side surface and interior cover face;
Seal joint-this pressure ring is positioned at the axle sleeve Seal cage, tightly invests the packing end;
Its interior cover of oil-sealing sleeve-this oil-sealing sleeve has been worn curved cavity, and the vertical sleeve face of its cavity end connects with seal joint, and output sleeve circumferential surface and formation one seal oil chamber; On the oil-sealing sleeve circumferential surface, have a groove; The oil-sealing sleeve the other end has a boss, has fixing bolt to pass boss oil-sealing sleeve is fixed on the stuffing box gland;
Outside framework oil seal-this outside framework oil seal is positioned at oil-sealing sleeve, is filled with sealing oil at skeleton;
O type circle-this circle is positioned at the groove on the oil-sealing sleeve circumferential surface;
Sealing oil seal ring-this oil seal ring is positioned between outside framework oil seal inner ring surface and axle sleeve circumferential surface;
Grease hand-hole-this hole is annotated the oil seal ring place by this hole with grease on stuffing box gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139510 CN200949550Y (en) | 2006-09-05 | 2006-09-05 | Rotary shaft sealing device of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139510 CN200949550Y (en) | 2006-09-05 | 2006-09-05 | Rotary shaft sealing device of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949550Y true CN200949550Y (en) | 2007-09-19 |
Family
ID=38892092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620139510 Expired - Lifetime CN200949550Y (en) | 2006-09-05 | 2006-09-05 | Rotary shaft sealing device of centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949550Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963231A (en) * | 2010-09-03 | 2011-02-02 | 福建森源电力设备有限公司 | Liquid sealed spacing component of gas seal |
| CN102654127A (en) * | 2011-03-04 | 2012-09-05 | 中国科学院沈阳科学仪器研制中心有限公司 | Shaft sealing structure for vacuum pump |
| CN103879714A (en) * | 2014-04-02 | 2014-06-25 | 芜湖市海联机械设备有限公司 | Chain conveyer |
| CN106990020A (en) * | 2017-06-01 | 2017-07-28 | 魏钦磊 | The online rheological analysis device of polymer solution high pressure |
| CN110195880A (en) * | 2019-06-21 | 2019-09-03 | 沈阳化建通用设备有限公司 | Smoke impervious baffle door |
| CN111166025A (en) * | 2020-03-19 | 2020-05-19 | 临海市东塍伞业辅材厂 | Rotating mechanism facilitating rotation of umbrella fabric |
-
2006
- 2006-09-05 CN CN 200620139510 patent/CN200949550Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963231A (en) * | 2010-09-03 | 2011-02-02 | 福建森源电力设备有限公司 | Liquid sealed spacing component of gas seal |
| CN102654127A (en) * | 2011-03-04 | 2012-09-05 | 中国科学院沈阳科学仪器研制中心有限公司 | Shaft sealing structure for vacuum pump |
| CN103879714A (en) * | 2014-04-02 | 2014-06-25 | 芜湖市海联机械设备有限公司 | Chain conveyer |
| CN103879714B (en) * | 2014-04-02 | 2016-06-22 | 芜湖市海联机械设备有限公司 | Chain-linked conveyer |
| CN106990020A (en) * | 2017-06-01 | 2017-07-28 | 魏钦磊 | The online rheological analysis device of polymer solution high pressure |
| CN110195880A (en) * | 2019-06-21 | 2019-09-03 | 沈阳化建通用设备有限公司 | Smoke impervious baffle door |
| CN111166025A (en) * | 2020-03-19 | 2020-05-19 | 临海市东塍伞业辅材厂 | Rotating mechanism facilitating rotation of umbrella fabric |
| CN111166025B (en) * | 2020-03-19 | 2020-11-03 | 临海市东塍伞业辅材厂 | Rotating mechanism facilitating rotation of umbrella fabric |
| CN111920161A (en) * | 2020-03-19 | 2020-11-13 | 临海市东塍伞业辅材厂 | Rotating mechanism facilitating rotation of umbrella fabric |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070919 |
|
| EXPY | Termination of patent right or utility model |