CN2143268Y - Centrifugal pump paddle with spiral surface - Google Patents

Centrifugal pump paddle with spiral surface Download PDF

Info

Publication number
CN2143268Y
CN2143268Y CN 93200482 CN93200482U CN2143268Y CN 2143268 Y CN2143268 Y CN 2143268Y CN 93200482 CN93200482 CN 93200482 CN 93200482 U CN93200482 U CN 93200482U CN 2143268 Y CN2143268 Y CN 2143268Y
Authority
CN
China
Prior art keywords
paddle
angle
blade
centrifugal pump
point
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
Application number
CN 93200482
Other languages
Chinese (zh)
Inventor
许洪元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Original Assignee
Tsinghua University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN 93200482 priority Critical patent/CN2143268Y/en
Application granted granted Critical
Publication of CN2143268Y publication Critical patent/CN2143268Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Disclosed is an angle-changing spiral paddle, and the working surface linetype of the paddle is an angle-changing spiral line. The linetype can ensure the mounting angles on each point of the paddle to monotonously change without the point of extremum. Thus when the paddle works, the centrifugal pump paddle with spiral surface has the advantages of small loss of water force, equal abrasion and long service life. At the same time the coating angle of the paddle can be changed freely in order to make the paddle be suitable for different mediums (water, oil and residue slurry).

Description

Centrifugal pump paddle with spiral surface
The utility model relates to the blade of centrifugal pump, belongs to water conservancy project machinery
The blade of existing low specific speed centrifugal pump is the cylinder blade, and single circular arc commonly used or many circular arcs connect, and are called circular arc cylinder blade (see figure 1).Its shortcoming is that the variation of blade angle β (blade tangent line and circumferencial direction angle) is irregular, and its Changing Pattern is seen Fig. 2, maximum occurs in the centre of every section circular arc, influences the efficient of pump.
The purpose of this utility model provides a kind of cylinder blade that is applicable to low specific speed centrifugal pump.Blade angle changes to outlet monotonously from the blade import, and subtended angle of blade can freely be selected.
The purpose of this utility model is to realize like this, the working surface of the utility model cylinder blade is linear to be the angle logarithmic spiral curve, the laying angle of each point on this curve is changed monotonously from blade import to outlet, extreme point and jump can not appear, so improved the fluidised form of flowing medium in the impeller, can improve the efficient and the working life of pump.
Illustrate that accompanying drawing is as follows:
Fig. 1 is a circular arc type cylinder blade structure schematic representation
Fig. 2 is a laying angle Changing Pattern on the circular arc type blade
Fig. 3 is the utility model angle helical type cylinder blade structure schematic representation
Fig. 4 is an angle helical type cylinder blade angle Changing Pattern
Accompanying drawings embodiment is as follows:
The design process of the utility model angle helical type cylinder blade is as follows:
1, selects the cornerite φ of blade by the requirement of water pump, can choose φ=150 °-0.5n by following formula as slag stock pump φ value 5± 5 ° of n 5---the specific speed of pump
2, calculate the radius r of each point on the vane type line (generally blade can be divided into 10 ° of intervals) and the respective value of polar angle θ.
r=r 1e m( (θ)/(φ) ) n-θtgβ 1
M=e wherein nr 2-e nr 1-φ tg β 1N=φ (tg β 2-tg β 1)/m
r 1, r 2For the blade import with go out port radius
β 1, β 2Laying angle for blade import and outlet
3, link the working surface that each point can form an angle helical type blade with line smoothing.
4, the back side of drawing blade by vane thickness then.
The cornerite of the utility model angle helical type cylinder blade can be selected by the medium difference of water pump.Select different cornerites for use, can make angle helical type blade of the present utility model be used for media such as water, oil, slag slurry.

Claims (1)

1, a kind of angle helical type cylinder blade is characterized in that the working surface of said cylinder blade is linear and is the angle helical.
CN 93200482 1993-01-16 1993-01-16 Centrifugal pump paddle with spiral surface Expired - Fee Related CN2143268Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93200482 CN2143268Y (en) 1993-01-16 1993-01-16 Centrifugal pump paddle with spiral surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93200482 CN2143268Y (en) 1993-01-16 1993-01-16 Centrifugal pump paddle with spiral surface

Publications (1)

Publication Number Publication Date
CN2143268Y true CN2143268Y (en) 1993-10-06

Family

ID=33785231

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93200482 Expired - Fee Related CN2143268Y (en) 1993-01-16 1993-01-16 Centrifugal pump paddle with spiral surface

Country Status (1)

Country Link
CN (1) CN2143268Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111072A1 (en) * 2005-04-20 2006-10-26 Xinglin Zhang Impeller of centrifugal or mixed flow working machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006111072A1 (en) * 2005-04-20 2006-10-26 Xinglin Zhang Impeller of centrifugal or mixed flow working machine

Similar Documents

Publication Publication Date Title
CN219492667U (en) Energy-saving centrifugal sewage pump
CN207122439U (en) A kind of adjustable two phase flow pump impeller of impeller blade
CN2143268Y (en) Centrifugal pump paddle with spiral surface
CN109538528B (en) Centrifugal fan impeller
CN1066319A (en) Impeller annular seal
CN2511834Y (en) Hydraulic moment changer
CN2071267U (en) Vane automatic balance shaft force centrifugal pump
CN1022702C (en) Water turbine rotor
CN200952491Y (en) Vehicle water pump vane with staggered vanes
CN209212646U (en) A kind of impeller and coke delivery pump
CN2604542Y (en) Multistage centrifugal pump
CN1031474C (en) Axial-flow type high-speed paddle pump
CN2842022Y (en) Centrifugal pump
CN87210194U (en) Sand scraper for special propeller founding
CN1888441A (en) High-sealing multi-stage pump
CN2310889Y (en) Centrifugal forward and rearward impeller with subcritical leaf
CN109404332A (en) A kind of impeller and coke delivery pump
CN2268792Y (en) Centrifugal water pump impeller
CN2823618Y (en) Centrifugal pump having pressing-out chamber with shunting way
CN220487915U (en) Tandem inducer
CN100337023C (en) Self-adaptable straight-vaned pitch variable water turbine for tidal energy conversion
CN2766054Y (en) Wheel with L-type blades of mixed flow turbine
CN218967161U (en) Ship hydrodynamic auxiliary propulsion energy-saving device
CN219299600U (en) Improved water pump
CN219492668U (en) Anti-blocking sewage pump impeller structure

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee