CN108518356A - A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure - Google Patents
A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure Download PDFInfo
- Publication number
- CN108518356A CN108518356A CN201810587521.XA CN201810587521A CN108518356A CN 108518356 A CN108518356 A CN 108518356A CN 201810587521 A CN201810587521 A CN 201810587521A CN 108518356 A CN108518356 A CN 108518356A
- Authority
- CN
- China
- Prior art keywords
- pump cover
- bubble
- impeller
- solid particle
- dihedral vane
- 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.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000007787 solid Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000005266 casting Methods 0.000 claims description 4
- 238000005119 centrifugation Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- 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
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- 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
- F04D29/086—Sealings especially adapted for liquid pumps
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5886—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps cooling by injection
-
- 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
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structures, including impeller, pump cover：The back side of impeller is provided with back blades, has certain interval between impeller and pump cover；Solid particle, bubble, steam and liquid mixture deporting device are provided in pump cover machine sealing chamber room, the solid particle, bubble, steam and liquid mixture deporting device are several dihedral vanes being cast integrally with pump cover.Structure of the invention is economical and practical, and only changing the indoor structure of pump cover chamber enables the solid particle, bubble, steam and the liquid mixture that enter around mechanical seal to automatically return in pump housing runner, and the pump housing is finally discharged.Liquid around mechanical seal can timely update, not only solid particle, bubble etc. are taken away, mechanical seal is allowed to continue to operate in more clean environment, and the clean liquid for constantly entering machine sealing chamber room can also take away mechanical seal because of heat caused by friction, while lubricating mechanical sealing, cooling effect is also played, the service life for extending mechanical seal substantially increases the reliability of pumping unit.
Description
Technical field：
The present invention relates to a kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structures, are matched on general-purpose centrifugal pump, belong to
In general-purpose pump equipment technical field.It the composite can be widely applied to be easy because the solid particle in medium causes mechanical seal bullet
The pumps such as transh pump, slush pump, chemical pump, the clarified water pump that spring is stuck, seal face is worn, leads to machine envelope damage because of bubble coalescence
In.
Background technology：
In general-purpose centrifugal pump field, centrifugal pump in actual operation can using mechanical seal come seal pump chamber and impeller back with
Pump cover forms machine sealing chamber, and medium only drives flowing, media flow speed very slow by the rotation of axis and machine envelope rotating ring in machine sealing chamber, machine
The high-speed friction of the dynamic and static ring of tool sealing needs lubricating, cooling down for medium in machine sealing chamber, slow media flow hardly possible in machine sealing chamber
It conducts to generate steam in time so that machine is sealed the heat that friction generates, whether machine seals the secondary temperature arrising caused by friction of friction in practice
The bubble that the steam or medium itself of generation are mingled with can be largely gathered in machine sealing chamber, be gathered in the minute bubbles of the secondary surrounding of friction
Big ring bodies can be formed by, which building up, keeps apart friction pair with medium cause machine to seal dry turn, and it is secondary that this will cause machine to seal friction
It is harmful to heating and burns, the mixture of a large amount of solid particle and liquid is assembled in machine envelope and machine sealing chamber can cause machine to seal spring
Stuck, the secondary excessive wear of friction makes the mechanical seal service life greatly shorten.Mechanical seal rinsing dress can be added in centrifugal pump in the past
Set, single mechanical end face seal is changed to double mechanical seal and with flusher, mechanical seal is changed to packing seal or
Using integrated mechanical sealing, these change measures either make assembly become complicated not readily transportable and installation or need worker
It safeguards at the scene, and sealing effect is all bad.
Therefore, in order to ensure the normal operation of centrifugal pump needs the change pervious structure design of centrifugal pump to make the mechanical seal longevity
Order that longer, sealing effect is more preferable, equipment is more reliable.
Invention content：
The purpose of the present invention is being directed to disadvantage present in background technology and problem to be improved and innovated, a kind of inclination leaf is provided
Chip centrifugal pump cover seal chamber self-cleaning structure.
The technical solution adopted by the present invention is：
A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure, including impeller, pump cover：The back side of impeller is provided with pair
Blade has certain interval between impeller and pump cover；Pump cover machine sealing chamber is provided with solid particle, bubble, steam and liquid in room
Mixture deporting device, the solid particle, bubble, steam and liquid mixture deporting device is several is cast integrally with pump cover
Dihedral vane.
The back blades of wheel backface is integrated with pump vane casting, when design between control back side back blades and pump cover end face
Gap makes the medium at impeller back generate centrifugal force under the action of back blades.
Dihedral vane even circumferential is distributed in pump cover machine sealing chamber room, is cast integrally with pump cover, at least inclines in the presence of five pieces
Oblique blade, while to prevent dihedral vane from resulting in blockage in pump cover machine sealing chamber room, the gap between dihedral vane is sufficiently large,
Every piece of dihedral vane all includes upper end, lower end, a side surface, another side surface and tip side；Every piece of dihedral vane is all to tilt
It is angled with vertically or horizontally reference planes, specifically, the rectangular surfaces of bottom and upper segment from reference planes revolve
It returns and reaches the root i.e. inner wall of machine sealing chamber, the rotation direction of direction of rotation and axis is on the contrary, reference planes and another side surface limit
The angle of inclination of dihedral vane is determined, angle of inclination is preferably 60 °, can also be chosen in 10 ° to 80 °.
Setting solid particle, bubble, steam and liquid mixture expel device structure in the sealed chamber of pump cover, keep machinery close
Envelope chamber low-pressure area is formed under the action of expelling device, into low-pressure area seal chamber solid particle or bubble in impeller accessory lobes
Pump housing runner is come back to from impeller back under the centrifugation force effect that piece generates, and is discharged from the outlet of pump.
The high pressure cleaning liquid of wheel backface can constantly enter pump cover machine sealing chamber room, take away solid particle and bubble simultaneously
Cooler seals.
Compared with prior art, the beneficial effects of the present invention are：
Automatically cleaning machine sealing chamber structure economics provided by the invention are practical, and only changing the indoor structure of pump cover chamber makes into mechanical close
Solid particle, bubble, steam and liquid mixture around envelope can automatically return in pump housing runner, and the pump housing is finally discharged.
Liquid around mechanical seal can timely update, and not only take away solid particle, bubble etc., and mechanical seal is allowed to continue more
It is operated in clean environment, and the clean liquid for constantly entering machine sealing chamber room can also take away mechanical seal because caused by friction
Heat also plays cooling effect while lubricating mechanical sealing, and the service life for extending mechanical seal substantially increases
The reliability of pumping unit.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the partial enlarged view of the present invention；
Fig. 3 is that the medium of the present invention flows to schematic diagram；
Fig. 4 is the end cap and blade construction schematic diagram of the present invention.
Specific implementation mode：
Below in conjunction with the accompanying drawings, by embodiment, invention is further described in detail：
A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure, including impeller 1, pump cover 3：The back side of impeller 1 is arranged
There is back blades 2, there is certain interval between impeller 1 and pump cover 3；It is provided with solid particle, bubble, steaming in pump cover machine sealing chamber room 4
Vapour and liquid mixture deporting device 5, the solid particle, bubble, steam and liquid mixture deporting device 5 are that several and pump cover is cast
Cause integrated dihedral vane 6.The back blades of wheel backface is integrated with pump vane casting, control back side back blades and pump when design
The gap of lid end face makes the medium at impeller back generate centrifugal force under the action of back blades.6 even circumferential of dihedral vane is distributed
It is cast integrally in pump cover machine sealing chamber room 4, with pump cover 3, at least there are five pieces of dihedral vanes 6, while to prevent dihedral vane 6
It results in blockage in pump cover machine sealing chamber room 4, the gap between dihedral vane 6 is sufficiently large, and every piece of dihedral vane 6 all includes upper end
7, lower end 8, a side surface 9, another side surface 10 and tip side 11；Every piece of dihedral vane 6 be all it is inclined with vertically or horizontally
Reference planes are angled, specifically, the rectangular surfaces of upper end 7 and lower end 8 are rotated to extend into root from reference planes 12
The rotation direction of the inner wall 13 of portion, that is, machine sealing chamber, direction of rotation and axis 14 is on the contrary, reference planes 12 and another side surface 10 limit
The angle of inclination of dihedral vane 6, angle of inclination are preferably 60 °, can also be chosen in 10 ° to 80 °.The sealed chamber of pump cover
Interior setting solid particle, bubble, steam and liquid mixture expel device structure, make mechanical seal chamber under the action of expelling device
Formed low-pressure area, into low-pressure area seal chamber solid particle or bubble under the centrifugation force effect that impeller back blades generates from
Impeller back comes back to pump housing runner, and is discharged from the outlet of pump.The high pressure cleaning liquid of wheel backface can constantly into
Enter pump cover machine sealing chamber room, takes away solid particle and bubble cooler envelope simultaneously.
Operation principle：
1. centrifugal pump configures single mechanical end face seal；
2. back shroud of impeller arranges four pieces or more back blades；Control the height of wheel backface back blades and its between pump cover end face
Gap makes the medium at impeller back do centrifugal movement.
3. several pieces of dihedral vanes as shown in Figure 1,2,3, 4, are added on pump cover machine sealing chamber wall；Pump shaft and machine envelope rotation band
Motivation seals intracavitary medium motion, these structure vectoring aircrafts, which seal intracavitary, has the medium motion of typical fluid flowing dynamics in machine
It seals intracavitary and forms low-pressure area.
4. enter the indoor solid particle of pump cover machine sealing chamber, bubble, steam and water mixture can because pressure difference and from
Mental and physical efforts are pullled, and are come back to impeller back and are done in the medium of centrifugal movement, and are got rid of back pump housing runner and arranged from the outlet of pump
Go out.
The back side back blades 2 of impeller 1 is integrated with pump vane casting；
Specific embodiment：Dihedral vane even circumferential is distributed in pump cover machine sealing chamber room, is cast integrally with pump cover, specific
Embodiment at least there are five pieces of blades, while to prevent the gap that blade is resulted in blockage in machine sealing chamber between blade should foot
Enough big, every piece of blade all includes upper end, lower end, a side surface, another side surface and tip side.Every piece of blade be all it is inclined with
Vertically or horizontally reference planes are angled, specifically, the rectangular surfaces of bottom and upper segment are prolonged from reference planes rotation
Reach the root i.e. inner wall of machine sealing chamber, the rotation direction of direction of rotation and axis is on the contrary, reference planes and the second side surface define
The angle of inclination b of blade, angle of inclination b are preferably 60 °, can also be chosen in 10 ° to 80 °.
Embodiment of the present invention is only the description carried out to the preferred embodiment of the present invention, not to the present invention
Conception and scope is defined, and under the premise of not departing from design philosophy of the present invention, engineers and technicians are to this hair in this field
The all variations and modifications that bright technical solution is made should all fall into protection scope of the present invention, the claimed skill of the present invention
Art content has all been recorded in detail in the claims.
Claims (5)
1. a kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure, including impeller, pump cover, it is characterised in that：Impeller
The back side be provided with back blades, between impeller and pump cover have certain interval；Pump cover machine sealing chamber is provided with solid particle, gas in room
Bubble, steam and liquid mixture deporting device, the solid particle, bubble, steam and liquid mixture deporting device are several and pump
Cover the dihedral vane being cast integrally.
2. dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure according to claim 1, it is characterised in that：It is described
The back blades of wheel backface is integrated with pump vane casting, and the gap of back side back blades and pump cover end face is controlled when design, makes impeller
The medium at back generates centrifugal force under the action of back blades.
3. dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure according to claim 1, it is characterised in that：It is described
Dihedral vane even circumferential is distributed in pump cover machine sealing chamber room, is cast integrally with pump cover, at least there are five pieces of dihedral vanes, together
When to prevent dihedral vane from resulting in blockage in pump cover machine sealing chamber room, the gap between dihedral vane is sufficiently large, every piece of inclination
Blade all includes upper end, lower end, a side surface, another side surface and tip side；Every piece of dihedral vane be all it is inclined with it is vertical
Or horizontal reference plane is angled, specifically, the rectangular surfaces of top and bottom are rotated to extend into from reference planes
The rotation direction of the inner wall of root, that is, machine sealing chamber, direction of rotation and axis is on the contrary, reference planes and another side surface define inclination
The angle of inclination of blade, angle of inclination are preferably 60 °, can also be chosen in 10 ° to 80 °.
4. dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure according to claim 1, it is characterised in that：It is described
Setting solid particle, bubble, steam and liquid mixture expel device in the sealed chamber of pump cover, and mechanical seal chamber is made to expel
Low-pressure area is formed under the action of device, into low-pressure area seal chamber solid particle or the centrifugation that is generated in impeller back blades of bubble
Pump housing runner is come back to from impeller back under force effect, and is discharged from the outlet of pump.
5. dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure according to claim 1, it is characterised in that：It is described
The high pressure cleaning liquid of wheel backface can constantly enter pump cover machine sealing chamber room, take away solid particle and bubble cooler simultaneously
Envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587521.XA CN108518356A (en) | 2018-06-08 | 2018-06-08 | A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810587521.XA CN108518356A (en) | 2018-06-08 | 2018-06-08 | A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518356A true CN108518356A (en) | 2018-09-11 |
Family
ID=63428200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810587521.XA Pending CN108518356A (en) | 2018-06-08 | 2018-06-08 | A kind of dihedral vane formula centrifugal pump cover seal chamber self-cleaning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803288A (en) * | 2021-08-20 | 2021-12-17 | 北京航天石化技术装备工程有限公司 | Be applied to butt spinning blade and slurry pump of slurry pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336048A (en) * | 1992-12-22 | 1994-08-09 | Goulds Pumps, Incorporated | Fluid directing device for seal chamber |
| US5489187A (en) * | 1994-09-06 | 1996-02-06 | Roper Industries, Inc. | Impeller pump with vaned backplate for clearing debris |
| CN1519477A (en) * | 2003-01-21 | 2004-08-11 | 上海佳麟泵阀有限公司 | Suspension arm type centrifugal pump used in chemical industry |
| CN201705715U (en) * | 2010-06-04 | 2011-01-12 | 杭州振兴工业泵制造有限公司 | Shaft sealing cover of centrifugal pump with flow guide vane |
| CN202132269U (en) * | 2011-02-16 | 2012-02-01 | 张家港市飞浪泵阀有限公司 | Combination type mechanical seal shaft-seal case |
| CN102644621A (en) * | 2011-02-16 | 2012-08-22 | 张家港市飞浪泵阀有限公司 | Combined-type mechanical-seal shaft-seal box |
-
2018
- 2018-06-08 CN CN201810587521.XA patent/CN108518356A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336048A (en) * | 1992-12-22 | 1994-08-09 | Goulds Pumps, Incorporated | Fluid directing device for seal chamber |
| US5489187A (en) * | 1994-09-06 | 1996-02-06 | Roper Industries, Inc. | Impeller pump with vaned backplate for clearing debris |
| CN1519477A (en) * | 2003-01-21 | 2004-08-11 | 上海佳麟泵阀有限公司 | Suspension arm type centrifugal pump used in chemical industry |
| CN201705715U (en) * | 2010-06-04 | 2011-01-12 | 杭州振兴工业泵制造有限公司 | Shaft sealing cover of centrifugal pump with flow guide vane |
| CN202132269U (en) * | 2011-02-16 | 2012-02-01 | 张家港市飞浪泵阀有限公司 | Combination type mechanical seal shaft-seal case |
| CN102644621A (en) * | 2011-02-16 | 2012-08-22 | 张家港市飞浪泵阀有限公司 | Combined-type mechanical-seal shaft-seal box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803288A (en) * | 2021-08-20 | 2021-12-17 | 北京航天石化技术装备工程有限公司 | Be applied to butt spinning blade and slurry pump of slurry pump |
| CN113803288B (en) * | 2021-08-20 | 2024-08-06 | 北京航天石化技术装备工程有限公司 | Be applied to counter-rotating blade and slurry pump of slurry pump |
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