CN201106576Y - Apparatus for sealing centrifugal pump mouth loop - Google Patents
Apparatus for sealing centrifugal pump mouth loop Download PDFInfo
- Publication number
- CN201106576Y CN201106576Y CNU200720032393XU CN200720032393U CN201106576Y CN 201106576 Y CN201106576 Y CN 201106576Y CN U200720032393X U CNU200720032393X U CN U200720032393XU CN 200720032393 U CN200720032393 U CN 200720032393U CN 201106576 Y CN201106576 Y CN 201106576Y
- Authority
- CN
- China
- Prior art keywords
- ring
- seal ring
- centrifugal pump
- seal
- pump case
- 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 description 15
- 238000000034 method Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 description 8
- 239000000411 inducer Substances 0.000 description 5
- 239000007769 metal material Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
- F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a centrifugal pump hole ring seal device, which comprises a seal ring arranged between a pump shell body and an impeller, a fastening device which can cause the seal ring to be fixed at the rotation direction, a retainer ring, and a retainer ring groove arranged at the inner side face of a pump shell body, wherein, the retainer ring is arranged in the retainer ring groove and is used for preventing the seal ring to axially play; the fastening device comprises a solid key, an outer groove arranged at the inner side face of the pump shell body axially and an inner groove arranged at the outer side face of the seal ring, and the solid key is arranged between the outer groove and the inner groove. The centrifugal pump hole ring seal device solves the technical problems in the existing seal device that the radial dimension is big, the reliability is bad, the service life is short, the application range is limited, etc., and has the advantages of small integral radial dimension, wide application range of the seal device, high reliability, convenient installation and maintenance, and long service life.
Description
Technical field
The utility model relates to a kind of sealing configuration, particularly relates to a kind of centrifugal pump control ring seal structure.
Background technique
Existing centrifugal pump is because the needs of sealing are furnished with floating type or fixed seal arrangement on the choma fitting surface before and after the impeller of being everlasting.The seal ring of floating type seal arrangement generally adopts non-metallic material, but mounting structure is complicated, and radial dimension is big, and reliability is not high; The seal ring of fixed seal arrangement generally adopts the soft metal material, fastening with screw and pump case, this structure is owing to the metal material difference, and physical property also has than big-difference, reliability is relatively poor, is easy to damage revolving part and seal arrangement itself in a single day dawdling with revolving part.Cause big damage for preventing to dawdle, the seal ring of fixed seal arrangement generally adopts nonmetallic material, and impeller does not generally adopt nonmetallic material.Because need between seal ring and the pump case to use screw fastening, same pump case material does not generally adopt nonmetallic material yet again.So the material selection of seal ring and pump case, these three kinds of structures of impeller is restricted, application area also is restricted.
Summary of the invention
The purpose of this utility model is to propose a kind of centrifugal pump mouth ring sealing device, technical problems such as existing seal arrangement radial dimension is big, poor reliability, working life is short, application area is restricted that it has solved.
Technical solution of the present utility model is:
A kind of centrifugal pump mouth ring sealing device, comprise the seal ring that is arranged between pump case and the impeller, the securing means that seal ring can be fixed in sense of rotation, its special way is, the circlip groove that it also comprises back-up ring and is arranged on the pump case inner side surface, described back-up ring are arranged in the circlip groove in order to prevent the seal ring axial float.
Above-mentioned securing means comprises a retainingf key, be axially disposed within the outer groove of pump case inner side surface and be axially disposed within the inner groovy of seal ring outer side surface, and described retainingf key is arranged between outer groove and the inner groovy.
Above-mentioned securing means comprises a pin, be axially disposed within the outer pin hole of pump case inner side surface and be axially disposed within the interior pin hole of seal ring outer side surface, and described pin is arranged among outer pin hole and the interior pin hole.
Adopt little Spielpassung or transition fit between above-mentioned seal ring and the pump case.
The processing method of above-mentioned centrifugal pump mouth ring sealing device is to process pump case internal surface, the seal ring of fixing seal ring, and then fine finishing again bore area earlier.
The utility model has the advantages that:
1, overall radial dimension is little.The utility model absorbs the advantage of two kinds of existing conventional seals devices, evades its shortcoming, has at utmost reduced the seal arrangement overall radial dimension.
2, seal arrangement applied range.The material of the seal ring of the utility model seal arrangement, pump case, impeller can be preferred in numerous metallic material and nonmetallic material.In addition, adopt little Spielpassung or transition fit between seal ring and the pump case, so long as need between revolving part and fixed block to be sealed and matched can use this structure.
3, reliability height.The utility model is inlayed seal ring after pump case machines, and then fine finishing seal ring endoporus, the maximized coaxality that has guaranteed seal ring and revolving part.In addition, seal ring axially and radially all be fixed, so can adopt nonmetallic material or metallic material etc., reliability increases substantially, and has all obtained good effect in the practical application repeatedly.
4, be easy for installation and maintenance long service life.Because basic structure is simple, install and maintaining all very convenient, the coaxality that seal ring and revolving part are good has greatly reduced to dawdle and has caused the damage of big seal ring or impeller in addition, be doubled and redoubled working life.
Description of drawings
Fig. 1 is the structural representation that the securing means of the utility model centrifugal pump mouth ring sealing device adopts retainingf key;
Fig. 2 is the structural representation that the securing means of the utility model centrifugal pump mouth ring sealing device adopts pin;
Wherein: 1-impeller, 2-seal ring, 3-retainingf key, 4-back-up ring, 5-pump shaft, 6-pump case, 7-circlip groove, the outer groove of 8-, 9-inner groovy, 10-pin, the outer pin hole of 11-, pin hole in the 12-, 13-inducer, 14-preoral loop, choma behind the 15-.
Embodiment
The structure of first kind of seal arrangement of the utility model is seen Fig. 1, comprises impeller 1, seal ring 2, back-up ring 4, circlip groove 7, securing means; Circlip groove 7 is arranged on pump case 6 inner side surfaces, and back-up ring 4 is arranged in the circlip groove 7 in order to prevent seal ring 2 axial play; Securing means is arranged between pump case and the impeller, seal ring can be fixed in sense of rotation, the inner groovy 9 that it comprises a retainingf key 3, is axially disposed within the outer groove 8 of pump case 6 inner side surfaces and is axially disposed within seal ring 2 outer side surfaces, retainingf key 3 is arranged between outer groove 8 and the inner groovy 9.Pump shaft 5 and output shaft of gear-box are an axle, and gearbox obtains power by coupling from the external world, and through speed change, pump shaft 5 and output shaft of gear-box impeller 1 and inducer 13 be high speed rotating together.Between preoral loop 14 and back choma 15 and the impeller 1 is Spielpassung, allows small amount of liquid to be leaked to impeller inlet from hyperbaric chamber.
The structure of second kind of seal arrangement of the utility model is seen Fig. 2, comprises impeller 1, seal ring 2, back-up ring 4, circlip groove 7, securing means; Circlip groove 7 is arranged on pump case 6 inner side surfaces, and back-up ring 4 is arranged in the circlip groove 7 in order to prevent seal ring 2 axial play; Securing means is arranged between pump case 6 and the impeller 1, seal ring 2 can be fixed in sense of rotation, the interior pin hole 12 that it comprises a pin 10, is axially disposed within the outer pin hole 11 of pump case inner side surface and is axially disposed within the seal ring outer side surface, pin 10 is arranged among outer pin hole 11 and the interior pin hole 12.
The processing method of the utility model seal arrangement is to process the pump case internal surface earlier, with back-up ring of the present utility model and retainingf key or back-up ring and pin seal ring is fixed again, and then fine finishing seal ring bore area, make itself and impeller port ring keep good coaxality, avoid dawdling in the impeller rotary course.
The utility model principle: the utility model seal arrangement utilizes retainingf key or pin to fix seal ring and prevents that its circumferencial direction from rotating, and fixes seal ring with back-up ring and prevent its axial float; In addition, seal ring and pump case adopt transition fit or little Spielpassung; Under this condition, choma and inducer just can normal rotation work in seal ring before and after output shaft of gear-box impeller and the inducer high speed rotating, impeller.Pump shaft 5 and output shaft of gear-box are an axle, and gearbox obtains power by coupling from the external world, and through speed change, pump shaft 5 and output shaft of gear-box impeller 1 and inducer 13 be high speed rotating together.Between preoral loop 14 and back choma 15 and the impeller 1 is Spielpassung, allows small amount of liquid to be leaked to impeller inlet from hyperbaric chamber.
Claims (5)
1. centrifugal pump mouth ring sealing device, comprise the seal ring (2) that is arranged between pump case (6) and the impeller (1), the securing means that seal ring (2) can be fixed in sense of rotation, it is characterized in that: it also comprises back-up ring (4) and is arranged on the circlip groove (7) of pump case (6) inner side surface that described back-up ring (4) is arranged in the circlip groove (7) in order to prevent seal ring (2) axial float.
2. centrifugal pump mouth ring sealing device according to claim 1, it is characterized in that: described securing means comprises a retainingf key (3), be axially disposed within the outer groove (8) of pump case (6) inner side surface and be axially disposed within the inner groovy (9) of seal ring (2) outer side surface, and described retainingf key (3) is arranged between outer groove (8) and the inner groovy (9).
3. centrifugal pump mouth ring sealing device according to claim 1, it is characterized in that: described securing means comprises a pin (10), be axially disposed within the outer pin hole (11) of pump case (6) inner side surface and be axially disposed within the interior pin hole (12) of seal ring (2) outer side surface, and described pin (10) is arranged among outer pin hole (11) and the interior pin hole (12).
4. according to claim 1 or 2 or 3 described centrifugal pump mouth ring sealing devices, it is characterized in that: adopt little Spielpassung or transition fit between described seal ring (2) and the pump case (6).
5. centrifugal pump mouth ring sealing device according to claim 4 is characterized in that: the processing method of described centrifugal pump mouth ring sealing device is to process pump case (6) internal surface, fixing seal ring (2), and then fine finishing seal ring again (2) bore area earlier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720032393XU CN201106576Y (en) | 2007-07-31 | 2007-07-31 | Apparatus for sealing centrifugal pump mouth loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720032393XU CN201106576Y (en) | 2007-07-31 | 2007-07-31 | Apparatus for sealing centrifugal pump mouth loop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201106576Y true CN201106576Y (en) | 2008-08-27 |
Family
ID=39958374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720032393XU Expired - Lifetime CN201106576Y (en) | 2007-07-31 | 2007-07-31 | Apparatus for sealing centrifugal pump mouth loop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201106576Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963887A (en) * | 2015-07-14 | 2015-10-07 | 北京航天动力研究所 | Blade wheel sealing structure used for high-speed high-pressure centrifugal pump |
| CN105134666A (en) * | 2015-09-24 | 2015-12-09 | 陕西航天动力高科技股份有限公司 | Anti-cavitation centrifugal pump |
| CN106286375A (en) * | 2016-08-23 | 2017-01-04 | 成都翼高九天科技有限公司 | A kind of efficient supply the energy-saving fuel pump of environmental protection |
| CN106321501A (en) * | 2016-08-23 | 2017-01-11 | 成都翼高九天科技有限公司 | Efficient energy-saving and environment-friendly fuel oil device |
| CN109072938A (en) * | 2016-03-16 | 2018-12-21 | Ksb股份有限公司 | Centrifugal pump with the system for reducing reflux |
-
2007
- 2007-07-31 CN CNU200720032393XU patent/CN201106576Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963887A (en) * | 2015-07-14 | 2015-10-07 | 北京航天动力研究所 | Blade wheel sealing structure used for high-speed high-pressure centrifugal pump |
| CN105134666A (en) * | 2015-09-24 | 2015-12-09 | 陕西航天动力高科技股份有限公司 | Anti-cavitation centrifugal pump |
| CN109072938A (en) * | 2016-03-16 | 2018-12-21 | Ksb股份有限公司 | Centrifugal pump with the system for reducing reflux |
| CN106286375A (en) * | 2016-08-23 | 2017-01-04 | 成都翼高九天科技有限公司 | A kind of efficient supply the energy-saving fuel pump of environmental protection |
| CN106321501A (en) * | 2016-08-23 | 2017-01-11 | 成都翼高九天科技有限公司 | Efficient energy-saving and environment-friendly fuel oil device |
| CN106321501B (en) * | 2016-08-23 | 2019-04-16 | 成都翼高九天科技有限公司 | A kind of oil burning installation of high-efficient energy-saving environment friendly |
| CN106286375B (en) * | 2016-08-23 | 2019-06-18 | 成都翼高九天科技有限公司 | A kind of efficient supply and environmentally friendly energy-saving fuel pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070731 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070731 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |