CN203570667U - Semi-open-type high-lift impeller - Google Patents

Semi-open-type high-lift impeller Download PDF

Info

Publication number
CN203570667U
CN203570667U CN201320542759.3U CN201320542759U CN203570667U CN 203570667 U CN203570667 U CN 203570667U CN 201320542759 U CN201320542759 U CN 201320542759U CN 203570667 U CN203570667 U CN 203570667U
Authority
CN
China
Prior art keywords
impeller
lift
semi
shroud
short
Prior art date
Application number
CN201320542759.3U
Other languages
Chinese (zh)
Inventor
徐美娟
Original Assignee
浙江同泰泵业有限公司
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 浙江同泰泵业有限公司 filed Critical 浙江同泰泵业有限公司
Priority to CN201320542759.3U priority Critical patent/CN203570667U/en
Application granted granted Critical
Publication of CN203570667U publication Critical patent/CN203570667U/en

Links

Abstract

The utility model provides a semi-open-type high-lift impeller. The semi-open-type high-lift impeller is provided with a rear cover plate and a hub arranged on the rear side face of the rear cover plate. The semi-open-type high-lift impeller is characterized in that a plurality of long blades are arranged on the front side face of the rear cover plate, the long blades are evenly distributed relative to the circumference of the axis of the impeller, the outlet ends of the long blades are located on the edge of the rear cover plate, the inlet ends of the long blades are connected to a front impeller ring, and the front impeller ring is an annular body which is coaxial with the impeller; a short blade is arranged at the position, located between every two adjacent long blades, of the front side face of the rear cover plate, the outlet ends of the short blades are located on the edge of the rear cover plate, the distance from the inlet ends of the short blades to the axis of the impeller is zero point fifty five to zero point seventy five time of the radius of the rear cover plate and all the short blades are evenly distributed relative to the circumference of the axis of the impeller. The semi-open-type high-lift impeller guarantees that a centrifugal pump impeller flow channel cannot be blocked, and meanwhile, realizes high lift, high suction stroke, short self-suction time and high efficiency of a centrifugal pump.

Description

The high-lift impeller of semi-open type
Technical field
The utility model belongs to a kind of centrifugal pump structure, relates in particular to a kind of blade wheel structure of centrifugal pump.
Background technique
In prior art, the impeller of high-lift centrifugal pump is double shrouded wheel, in impeller blade both sides, has front and rear cover plate; The hydraulic efficiency of double shrouded wheel is high, is applicable to high-liftly, and is applicable to carry clean liquid free from foreign meter.When it is for delivery of the liquid that contains solid particle and impurity, double shrouded wheel runner is narrow, is easy to occur runner blocking phenomenon, and serious meeting causes impeller to damage, and power stall, even can cause burn-down of electric motor.The relative half-opened impeller property regulation of double shrouded wheel is poor, and cost of production is high.Half-opened impeller blade one side has cover plate, and runner is difficult for stopping up, and is applicable to carry liquid and the suspension that contains solid particle; Half-opened impeller can by blade longitudinally, across cutting regulates technical data required for the pump, interchangeability, versatility are good, reduce mould and drop into.But the relative double shrouded wheel of half-opened impeller, because leakage reversed flow is large, so lift, efficiency are also lower.General half-opened impeller is for the centrifugal pump of low lift.
Model utility content
The utility model provides a kind of semi-open type high-lift impeller, its objective is and solves the shortcoming that prior art exists, and centrifugal pump impeller runner can not stopped up, and high-lift, high suction depth, the self-priming time of realizing centrifugal pump short simultaneously, high efficiency.
The utility model solves the technological scheme that its technical problem adopts:
The high-lift impeller of semi-open type, it has back shroud and is located at the wheel hub of the trailing flank of back shroud, it is characterized in that: the leading flank of back shroud is provided with several linear leafs, all linear leafs are with respect to the axis circumference uniform distribution of impeller, the outlet end of linear leaf is positioned at the edge of back shroud, the entrance point of linear leaf is connected on a preoral loop, and preoral loop is a ring bodies with the axis coaxle of impeller; The leading flank of back shroud is provided with short blade between two adjacent linear leafs, the outlet end of short blade is positioned at the edge of back shroud, the entrance point of short blade to the distance of the axis of impeller be back shroud radius 0.55-0.75 doubly, all short blades are with respect to the axis circumference uniform distribution of impeller.
The outlet laying angle of described linear leaf and short blade is 30 °-40 °.
Described linear leaf and short blade are circular arc, and the radius of arc of linear leaf and short blade equates.
Described short blade offset, the inlet side of the entrance point of short blade is to the inclined to one side 40%-45% in the back side of adjacent linear leaf.
Usefulness of the present utility model is:
The utility model has been cancelled the front shroud of double shrouded wheel, makes it to become half-opened impeller, has expanded the width of runner, even if contain particulate matter in medium, also can not stop up runner.The utility model is provided with preoral loop at blade water intake front end, reduces and leaks, and improves volumetric efficiency, improves the suction capacity of water pump; The utility model blade adopts long and short composite blading, reduce diffusance, stablized liquid flowing at impeller channel, the utility model adopts the high-lift the Hydraulic Design of semi-open type, broken through a half-opened impeller boundary for low-lift pump, single-stage lift improves, and can reduce the cost that adopts multistage pump because lift is higher.Design of the present utility model has improved cavitation performance and head coefficient and the efficiency of pump.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the utility model sectional view;
Fig. 2 is that the A of Fig. 1 is to view.
Embodiment
As shown in Figure 1 and Figure 2, impeller of the present utility model comprises circular back shroud 3 and is located at the wheel hub 4 of the trailing flank of back shroud 3.
The leading flank of back shroud 3 is provided with by 4 linear leafs 21 and 4 composite blading structures 2 that short blade 22 forms.
All 4 linear leafs 21 with respect to the axis 30(of impeller here the axis 30 of impeller be exactly the axis of back shroud 3) circumference uniform distribution, the outlet end 211 of linear leaf 21 is positioned at the edge of back shroud 3, the entrance point 212 of linear leaf 21 is connected on a preoral loop 1, and preoral loop 1 is a ring bodies coaxial with the axis 30 of impeller.
The leading flank of back shroud 3 is provided with short blade 22 between two adjacent linear leafs 21, the outlet end 221 of short blade 22 is positioned at the edge of back shroud 3, the entrance point 222 of short blade 22 to the distance of the axis 30 of impeller be back shroud 3 radiuses 0.55-0.75 doubly, also, the formed diameter of a circle of line of the entrance point 222 of 4 short blades 22 D of short blade initial diameter D '=(0.55-0.75) namely 2, the D here 2be the formed diameter of a circle of line (being the diameter of back shroud 3 here) of the outlet end 211 of all linear leafs 21 and the outlet end 221 of short blade 22, all 4 short blades 22 are with respect to axis 30 circumference uniform distributions of impeller.
The outlet laying angle β of linear leaf 21 and short blade 22 2it is 30 °-40 °.
The radius of arc that linear leaf 21 and short blade 22 are circular arc and linear leaf 1 and short blade 22 equates.
Short blade 22 biasings, the inlet side of the entrance point 222 of short blade 22 is to the inclined to one side 40%-45% in the back side of adjacent linear leaf 21.
The utility model has expanded the width of runner, has reduced the diffusion of runner, has improved the cavitation resistive property of impeller, even if contain particulate matter in medium, also can not stop up runner; Manufacture difficulty is less, and cost is lower, and can by blade longitudinally, across cutting regulate technical data required for the pump, interchangeability, versatility are good, reduce impeller mold and drop into; Due to the existence of preoral loop, not only reduce volume and leak, improve volumetric efficiency, also make the self-priming performance of pump improve; More than the utility model single-stage lift can reach 70m, can reduce the cost that adopts multistage pump because lift is higher.

Claims (4)

1. the high-lift impeller of semi-open type, it has back shroud and is located at the wheel hub of the trailing flank of back shroud, it is characterized in that: the leading flank of back shroud is provided with several linear leafs, all linear leafs are with respect to the axis circumference uniform distribution of impeller, the outlet end of linear leaf is positioned at the edge of back shroud, the entrance point of linear leaf is connected on a preoral loop, and preoral loop is a ring bodies with the axis coaxle of impeller; The leading flank of back shroud is provided with short blade between two adjacent linear leafs, the outlet end of short blade is positioned at the edge of back shroud, the entrance point of short blade to the distance of the axis of impeller be back shroud radius 0.55-0.75 doubly, all short blades are with respect to the axis circumference uniform distribution of impeller.
2. the high-lift impeller of semi-open type as claimed in claim 1, is characterized in that: the outlet laying angle of described linear leaf and short blade is 30 °-40 °.
3. the high-lift impeller of semi-open type as claimed in claim 1, is characterized in that: described linear leaf and short blade are circular arc, and the radius of arc of linear leaf and short blade equates.
4. the high-lift impeller of semi-open type as claimed in claim 1, is characterized in that: described short blade offset, the inlet side of the entrance point of short blade is to the inclined to one side 40%-45% in the back side of adjacent linear leaf.
CN201320542759.3U 2013-09-02 2013-09-02 Semi-open-type high-lift impeller CN203570667U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320542759.3U CN203570667U (en) 2013-09-02 2013-09-02 Semi-open-type high-lift impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320542759.3U CN203570667U (en) 2013-09-02 2013-09-02 Semi-open-type high-lift impeller

Publications (1)

Publication Number Publication Date
CN203570667U true CN203570667U (en) 2014-04-30

Family

ID=50538400

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320542759.3U CN203570667U (en) 2013-09-02 2013-09-02 Semi-open-type high-lift impeller

Country Status (1)

Country Link
CN (1) CN203570667U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697389A (en) * 2014-12-11 2016-06-22 德昌电机(深圳)有限公司 Pump and cleaning device
WO2016179929A1 (en) * 2015-05-13 2016-11-17 山东昊安金科新材料股份有限公司 Spiral flow constant pressure pump
CN109989943A (en) * 2019-04-18 2019-07-09 江苏大学 A kind of multistage pump return guide vane splitterr vanes and design method
CN110805572A (en) * 2019-11-26 2020-02-18 赵中江 Anti-blocking impeller of centrifugal pump

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105697389A (en) * 2014-12-11 2016-06-22 德昌电机(深圳)有限公司 Pump and cleaning device
WO2016179929A1 (en) * 2015-05-13 2016-11-17 山东昊安金科新材料股份有限公司 Spiral flow constant pressure pump
CN109989943A (en) * 2019-04-18 2019-07-09 江苏大学 A kind of multistage pump return guide vane splitterr vanes and design method
CN110805572A (en) * 2019-11-26 2020-02-18 赵中江 Anti-blocking impeller of centrifugal pump

Similar Documents

Publication Publication Date Title
CN104613003B (en) Hydraulic design method for low-specific-speed overload-free centrifugal pump impeller
CN101691873B (en) Open impeller for pump
CN103291653B (en) A kind of low-specific speed impeller and blade design method thereof
CN102086884A (en) Four working condition-point hydraulic design method of impeller of centrifugal pump
EP2978975A1 (en) Slurry pump impeller
CN104358707A (en) Design method for non-clogging vortex-pump impeller with long and short edgefold blades
CN205190327U (en) Centrifugal fan impeller of adjustable splitterr vanes
CN103742445B (en) Nuclear main pump maximum flow hydraulic design method
CN103883555B (en) Mixed-flow double-suction pump impeller Hydraulic Design Method
CN103104549A (en) Multiple operating condition design method of centrifugal charging pump guide vane of nuclear power station
CN105041720B (en) A kind of efficiently quasi- annular pumping chamber Hydraulic Design Method of big overcurrent Turo pump
CN103423168B (en) A kind of hydraulic model of AP1000 filter screen backwashing pump
CN204805151U (en) Two -way axial -flow pump
CN102518602B (en) Centrifugal fan impeller and centrifugal fan
CN204532956U (en) Centrifugal impeller, centrifugal blower assembly and air-conditioner set
CN103696983A (en) Method for optimally designing impellers of bidirectional axial flow pumps
CN203230624U (en) Centrifugal fan rotor, centrifugal fan and air cooling refrigerator
CN202273885U (en) Efficient multi-air-outlet energy-saving explosion-proof fan
CN103016395A (en) Hydraulic design method for unequal lifts of centrifugal pump impeller
CN102506029B (en) Impeller of centrifugal fan and centrifugal fan
CN2816434Y (en) Vortex-adding chamber structure for water pump
CN103452912A (en) Multi-working-condition design method for guide vanes of axial flow pumps
CN2580158Y (en) Two-way axial flow pump vane
CN203906303U (en) Multi-stage, vertical, efficient and anti-cavitation cryogenic pump
CN104019056B (en) The hydraulic model method for designing of a kind of blade the is antecurvature circularly-supercharged pump of formula

Legal Events

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

Granted publication date: 20140430

Termination date: 20140902