CN105971930A - Centrifugal pump capable of improving flow capacity - Google Patents
Centrifugal pump capable of improving flow capacity Download PDFInfo
- Publication number
- CN105971930A CN105971930A CN201610548628.4A CN201610548628A CN105971930A CN 105971930 A CN105971930 A CN 105971930A CN 201610548628 A CN201610548628 A CN 201610548628A CN 105971930 A CN105971930 A CN 105971930A
- Authority
- CN
- China
- Prior art keywords
- pump
- centrifugal pump
- shaft
- wheel hub
- pump 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.)
- Pending
Links
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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2261—Rotors specially for centrifugal pumps with special measures
- F04D29/2272—Rotors specially for centrifugal pumps with special measures for influencing flow or boundary layer
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
- F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal pump capable of improving flow capacity. The centrifugal pump comprises a pump body provided with an impeller chamber, and a motor fixed together with the pump body, wherein a motor shaft is connected with a pump shaft inside the impeller chamber, an impeller is fixed on the pump shaft, the impeller comprises a center hole and a hub fixed together with the pump shaft, and a front cover plate and a rear cover plate are respectively arranged on the front side and the rear side of the hub in a manner of surrounding the hub, an overflowing passage communicated with the inlet in the front side of the hub is formed between the front cover plate and the rear cover plate, and the diameter of the front cover plate is smaller than that of the rear cover plate. The centrifugal pump provided by the invention can enhance the flow capacity of solid particles in a medium.
Description
Technical field
The present invention relates to centrifugal pump.
Background technology
Generally centrifugal pump uses double shrouded wheel, as Publication No. 102927042A Chinese invention patent in
A kind of centrifugal pump impeller disclosed in 13 days February in 2013, front shroud is identical with back shroud diameter.Enclosed leaf
Wheel can meet major part operating mode, if but time pumped (conveying) medium contains bulky grain, the conveyance capacity of impeller can not meet
Demand.
Summary of the invention
The technical problem to be solved is just to provide a kind of centrifugal pump improving conveyance capacity, enhances
Conveyance capacity to the solid particle in medium.
For solve above-mentioned technical problem, the present invention adopt the following technical scheme that a kind of improve conveyance capacity from
Heart pump, including in the pump housing being provided with impeller cavity and the motor being fixed together with the pump housing, motor shaft and impeller cavity
Pump shaft couple, described pump shaft is fixed with impeller, described impeller includes the wheel hub that centre bore and pump shaft are fixing,
Before and after described wheel hub, side ring is respectively equipped with front shroud and back shroud, described front shroud and back shroud around this wheel hub
Between form the flow channels that connects with entrance on front side of wheel hub, described motor shaft is coaxial docking with pump shaft and welds
Being fixed as one, the diameter of described front shroud is less than the diameter of back shroud.
As preferably, described pump shaft includes the big footpath section group being provided with the path section by head end and connecting with path section
The stage portion become, is provided with flat key, and the end of path section screws between described path section and the centre bore of wheel hub
There is the lock-screw being fixed by wheel hub.
As preferably, described big footpath section is provided with bearing, and one end of bearing is positioned on the pump housing should bearing
In the bearing locating slot arranged.
As preferably, described motor shaft is provided with socket in butt end, and described pump shaft is provided with and socket in butt end
The insertion section of hot pressing interference fit.
As preferably, described pump shaft is being provided with the flange connected with insertion section away from side, insertion section, described flange
And form the V-ring groove accommodating wlding between socket end face.
As preferably, described socket is circular hole, and described insertion section is cylindrical.
As preferably, described motor shaft uses 45 steel to make, and described pump shaft uses steel alloy to make.
The technical solution used in the present invention, different from centrifugal pump closed type impeller, front shroud of impeller is retaining prosopyle
On the premise of ring size, reduce the outside dimension of front shroud, on the premise of less on impeller performance impact,
Remove a part of front shroud.Owing to front shroud reduces, in a disguised form add the width of impeller outlet (simultaneously by front
At back shroud), add the conveyance capacity to the solid particle in medium, it is adaptable to conventional double shrouded wheel is centrifuged
The operating mode that the conveyance capacity of pump cannot meet.
Accompanying drawing explanation
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings:
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of impeller；
Fig. 3 be motor shaft with pump shaft couple schematic diagram.
Detailed description of the invention
As depicted in figs. 1 and 2, a kind of centrifugal pump improving conveyance capacity, it is adaptable to conventional double shrouded wheel
The operating mode that the conveyance capacity of centrifugal pump cannot meet.Its pump housing 1 including being provided with impeller cavity and fixing with the pump housing
Motor 2 together, motor shaft 21 couples with the pump shaft 11 in impeller cavity, described pump shaft is fixed with impeller
12, described impeller 12 includes centre bore and pump shaft 11 fixing wheel hub 120, before and after described wheel hub side ring around
This wheel hub is respectively equipped with front shroud 121 and back shroud 122, shape between described front shroud 121 and back shroud 122
Becoming the flow channels 124 connecting with entrance on front side of wheel hub 123 and radially extending, the diameter of described front shroud is little
In the diameter of back shroud, the diameter of front shroud can the most suitably adjust, with regulation to consolidating in medium
The conveyance capacity of body granule.
Wherein, described pump shaft 11 includes the big footpath section group being provided with the path section by head end and connecting with path section
The stage portion become, is provided with flat key, and the end of path section screws between described path section and the centre bore of wheel hub
Having the lock-screw 13 being fixed by wheel hub, the corresponding lock-screw of wheel hub 120 is provided with screw slots 125.Institute
State big footpath section and be provided with bearing 22, one end of bearing be positioned on the pump housing to should bearing arrange bearing location
In groove.
It is integrated as it is shown on figure 3, described motor shaft 21 is coaxial docking with pump shaft 11 and is welded and fixed.Therefore,
Motor shaft 21 itself can use common material, pump shaft 11 to use special substance, to reduce production cost,
Specifically, described motor shaft 21 uses 45 steel to make, and described pump shaft 11 uses steel alloy to make.
Further, described motor shaft is provided with socket 211 in butt end, and described pump shaft is provided with in butt end and inserts
The insertion section 111 of mouth hot pressing interference fit, specific to the present embodiment, socket is circular hole, and insertion section is cylindrical,
Certainly it is not excluded for using rectangle, hexagon or the cooperation of other polymorphic structures.
Described pump shaft 11 is being provided with the flange 112 connected with insertion section 111, described flange away from side, insertion section
And form the V-ring groove accommodating wlding between socket end face.Form first by hot pressing interference fit to reconnect,
After welding, wlding is filled in V-ring groove, makes motor shaft 21 and pump shaft 11 form second and reconnects,
Being reliably connected of motor shaft 21 and pump shaft 11 is ensured eventually through duplex connecting structure.
Claims (7)
1. improve a centrifugal pump for conveyance capacity, including being provided with the pump housing of impeller cavity and being fixed together with the pump housing
Motor, motor shaft couples with the pump shaft in impeller cavity, and described pump shaft is fixed with impeller, and described impeller includes
The wheel hub that centre bore and pump shaft are fixing, before and after described wheel hub side ring around this wheel hub be respectively equipped with front shroud and after
Cover plate, forms the flow channels connected with entrance on front side of wheel hub, its feature between described front shroud and back shroud
Being: described motor shaft is coaxial docking with pump shaft and is welded and fixed and is integrated, the diameter of described front shroud is less than
The diameter of back shroud.
A kind of centrifugal pump improving conveyance capacity the most according to claim 1, it is characterised in that: described pump shaft
Including the stage portion being provided with the path section by head end and the big footpath section that connects with path section forms, described path section
And it is provided with flat key between the centre bore of wheel hub, and the end of path section is combined with the locking being fixed by wheel hub
Screw.
A kind of centrifugal pump improving conveyance capacity the most according to claim 2, it is characterised in that: described big footpath
Section be provided with bearing, one end of bearing be positioned on the pump housing to should bearing arrange bearing locating slot in.
4., according to a kind of centrifugal pump improving conveyance capacity described in claims 1 to 3 any one, its feature exists
In: described motor shaft is provided with socket in butt end, and described pump shaft is provided with in butt end joins with socket hot pressing interference
The insertion section closed.
A kind of centrifugal pump improving conveyance capacity the most according to claim 4, it is characterised in that: described pump shaft
It is being provided with the flange connected with insertion section away from side, insertion section, is being formed between described flange and socket end face and accommodate
The V-ring groove of wlding.
A kind of centrifugal pump improving conveyance capacity the most according to claim 5, it is characterised in that: described socket
For circular hole, described insertion section is cylindrical.
A kind of centrifugal pump improving conveyance capacity the most according to claim 4, it is characterised in that: described motor
Axle uses 45 steel to make, and described pump shaft uses steel alloy to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548628.4A CN105971930A (en) | 2016-07-11 | 2016-07-11 | Centrifugal pump capable of improving flow capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548628.4A CN105971930A (en) | 2016-07-11 | 2016-07-11 | Centrifugal pump capable of improving flow capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105971930A true CN105971930A (en) | 2016-09-28 |
Family
ID=56952707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610548628.4A Pending CN105971930A (en) | 2016-07-11 | 2016-07-11 | Centrifugal pump capable of improving flow capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105971930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087326A (en) * | 2017-12-19 | 2018-05-29 | 广东威灵电机制造有限公司 | Double shrouded wheel, heat pump and dish-washing machine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0395604A1 (en) * | 1989-04-27 | 1990-10-31 | ITT Flygt Aktiebolag | Centrifugal pump |
| CN1266950A (en) * | 1999-03-11 | 2000-09-20 | 王庆武 | Blade wheel for sand-discharging water pump |
| CN2603239Y (en) * | 2002-12-26 | 2004-02-11 | 蒋惠其 | Direct connected pump |
| CN2816426Y (en) * | 2005-08-26 | 2006-09-13 | 苗佳琪 | Low-temperature-rising all-delivery-lift stainless steel submergible electric pump |
| CN102022374A (en) * | 2009-09-13 | 2011-04-20 | 荣成市壮发水泵有限公司 | Impeller of externally mixed type self-priming pump |
| CN203892265U (en) * | 2014-05-27 | 2014-10-22 | 四川新达泵业有限责任公司 | Evaporative crystallization circulating pump |
| CN204082577U (en) * | 2014-09-10 | 2015-01-07 | 上海汇业机械科技有限公司 | Proof submersible sand discharging pump |
| CN205841308U (en) * | 2016-07-11 | 2016-12-28 | 川源(中国)机械有限公司 | A kind of centrifugal pump improving conveyance capacity |
-
2016
- 2016-07-11 CN CN201610548628.4A patent/CN105971930A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0395604A1 (en) * | 1989-04-27 | 1990-10-31 | ITT Flygt Aktiebolag | Centrifugal pump |
| CN1266950A (en) * | 1999-03-11 | 2000-09-20 | 王庆武 | Blade wheel for sand-discharging water pump |
| CN2603239Y (en) * | 2002-12-26 | 2004-02-11 | 蒋惠其 | Direct connected pump |
| CN2816426Y (en) * | 2005-08-26 | 2006-09-13 | 苗佳琪 | Low-temperature-rising all-delivery-lift stainless steel submergible electric pump |
| CN102022374A (en) * | 2009-09-13 | 2011-04-20 | 荣成市壮发水泵有限公司 | Impeller of externally mixed type self-priming pump |
| CN203892265U (en) * | 2014-05-27 | 2014-10-22 | 四川新达泵业有限责任公司 | Evaporative crystallization circulating pump |
| CN204082577U (en) * | 2014-09-10 | 2015-01-07 | 上海汇业机械科技有限公司 | Proof submersible sand discharging pump |
| CN205841308U (en) * | 2016-07-11 | 2016-12-28 | 川源(中国)机械有限公司 | A kind of centrifugal pump improving conveyance capacity |
Non-Patent Citations (1)
| Title |
|---|
| 李新德: "《液压系统故障诊断与维修技术手册 第二版》", 31 January 2013, 中国电力出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108087326A (en) * | 2017-12-19 | 2018-05-29 | 广东威灵电机制造有限公司 | Double shrouded wheel, heat pump and dish-washing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |
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| RJ01 | Rejection of invention patent application after publication |