CN108661917A - Energy-efficient self priming centrifugal pump - Google Patents
Energy-efficient self priming centrifugal pump Download PDFInfo
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- CN108661917A CN108661917A CN201810775505.3A CN201810775505A CN108661917A CN 108661917 A CN108661917 A CN 108661917A CN 201810775505 A CN201810775505 A CN 201810775505A CN 108661917 A CN108661917 A CN 108661917A
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- self priming
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- 230000037452 priming Effects 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 description 18
- 239000012530 fluid Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
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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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/445—Fluid-guiding means, e.g. diffusers 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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/02—Self-priming pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of energy-efficient self priming centrifugal pump, including water inlet pipe, reservoir chamber and impeller, it is equipped with suction chamber in reservoir chamber, suction chamber is surrounded by upper plate, lower plate and with the orthogonal side plate of the two；The hole h of upper plate upwardly extends to form outlet pipe along hole wall, outlet pipe is connect with impeller inlet, and the edge line of side plate cross section is linked in sequence and is formed by curve a, helix b, curve c and line d, is seamlessly transitted between line a and line c and line b, side plate where line d is provided with hole k, and hole k is connect with water inlet pipe；The center of circle o of the intersection point m and n of line b and line a and line c, m, n and hole h are located along the same line, and are R with the point on helix b and the line segment length between o, are θ, R=D with the point on helix b and the angle of the line segment between o and the line segment between m and o0(A+Bθ/C).Self priming centrifugal pump of the present invention takes into account efficiency, self-priming performance, hydraulic performance and operational reliability performance, can be used more widely.
Description
Technical field
The invention belongs to centrifugal pump fields, are related to a kind of energy-efficient self priming centrifugal pump.
Background technology
Self priming pump is the centrifugal pump of special construction, only needs to start for the first time and pour water, directly initiates later, have and use
Convenient, reliable operation and the advantages of convenient for long-distance centralized control, especially suitable for sucting installation and starting frequent occasion, but lacks
Point is that efficiency is low.Existing self priming pump is divided into two kinds of structures of internal-mixing and exterior mixing, and internal-mixing is that liquid stream flows back into impeller inlet, this
The self-priming efficiency of pump of kind structure is relatively high, and exterior mixing is that liquid stream flows back into impeller outlet, relatively inefficient, but self-priming time
Shorter, however, being the self priming pump of exterior mixing or internal-mixing, the relatively general efficiency of centrifugal pump of efficiency is all low.
Occasion in existing self priming pump for mounting height higher than water suction liquid level, generally there is following several structures：
(1) without sealing self-controlling self-priming pump, advantage is reliable for operation, and maintenance times are few, the disadvantage is that efficiency is low, because either
Internal-mixing or exterior mixing, the structure and regurgitant volume of air-water separation chamber determine properties of product, for ensure product from absorption
Energy and self-priming time, are typically designed and take larger regurgitant volume so that pump plot ratio is low, and because of the structure of air-water separation chamber, leaf
Speed cannot effectively be converted into pressure energy in wheel, but fall with impact, mutation diffusion or shrinkage loss, such efficiency of pump
With regard to relatively low, away from statistics, general self priming pump scene actual operating efficiency is no more than 50%, causes prodigious energy consumption waste, is not inconsistent
National energy-saving environmental requirement is closed, and self-suction pump impeller cannot be cut, flow pressure is constant after the completion of every pump design, and impeller is cut
After cutting, the gap that impeller and the pump housing forget place increases, and air-water mixture cannot quickly be discharged, and influences to pump self-priming performance；
(2) borehole shaft driven (centrifugal) pump, this structure pump use spatial guide blade structure, and efficiency is relatively high, but failure rate is also higher,
Since pump configuration lifting is more difficult, safeguard cumbersome；
(3) centrifugal pump matches vacuum pump, bottom valve or vacuum water diversion device, although solves the problems, such as that efficiency is low with vacuum pump,
But starting will vacuumize every time, and operation is cumbersome, and two kinds of failure of pump rates are higher, right especially in the liquid stream for having impurity
Ordinary Centrifugal Pumps are sealed with very high requirement, and slightly gas leakage cannot normally absorb water；With bottom valve and vacuum water diversion device, waterpower damage
It loses larger so that the way reduces, and cannot be used for the larger occasion of suction head, can not also be applied to impure
In medium.
Although the equipment of the above structure have certain advantage, all cannot achieve efficiency, self-priming performance, hydraulic performance and
Operational reliability is taken into account.
Therefore, it is great existing to develop a kind of self-priming centrifugal pump for taking into account efficiency, self-priming performance, hydraulic performance and operational reliability
Sincere justice.
Invention content
The purpose of the present invention is overcoming deficiency in the prior art, one kind is provided and takes into account efficiency, self-priming performance, hydraulic performance
And the self-priming centrifugal pump of operational reliability.Full runner the Hydraulic Design is carried out for case above, in the hope of obtaining energy-efficient self-priming
Formula centrifugal pump.
In order to achieve the above object, present invention employs the following technical solutions：
Energy-efficient self priming centrifugal pump, including water inlet pipe, reservoir chamber and impeller, reservoir chamber is interior to be equipped with suction chamber, water suction
Room is hollow structure, is surrounded by upper plate, lower plate and with the orthogonal side plate of the two, and the bottom of suction chamber is provided with logical
Hole, the indoor liquid via through holes of water storage enter in suction chamber；
It is provided with hole h on upper plate and upwardly extends to form outlet pipe along hole wall, outlet pipe is connect with impeller inlet, and side plate is horizontal
The edge line in section is comma shape, is linked in sequence and is formed by curve a, helix b, curve c and line d, curve a and curve c are flat
It slides curve and is seamlessly transitted between helix b, the side plate where line d is provided with hole k, and hole k is connect with water inlet pipe；The shape of suction chamber
Shape is mainly related to the shape of side plate, and the edge line of upper plate and lower plate can be identical as the edge line of side plate cross section,
It can differ；
The intersection point of helix b and curve a and curve c are respectively m and n, and the center of circle o of m, n and hole h are located along the same line, m
With at a distance from o be less than n at a distance from o, be R with the point on helix b and the line segment length between o, on helix b point with
The angle of the line segment between line segment and m and o between o is θ, R=D0(A+B θ/C), D0For impeller inlet diameter, A=0.6~
0.7, B=0.06~0.1, C=1 °, curve determine flow section without fixed equation according to every pump discharge, lift and rotating speed
Area, width and radial height can all randomly choose, and generally first take radial height, and width is determined further according to flow section area,
Relationship between flow section area and pump discharge and cross-sectional flow is：
S=Q/vs；
In formula, S is flow section area, unit m2, Q is pump discharge, unit m3/ s, vsIt is single for flow section flow velocity
Position is m/s, takes (v0+v1)/2, v0For pump inlet flow velocity, v1For impeller inlet flow velocity.
For existing self-priming pump configuration without suction chamber, only reservoir chamber, structure is a circular cylinder body, liquid stream from priming reservoir pass through into
Mouth bend pipe, diffuses in cylinder, flow stream velocity drastically declines, and in suction eye, flow velocity increased dramatically again, fluid reservoir stream suddenly
Speed is substantially zeroed, is amplification suddenly in the entire waterpower cross-section of river, rear sudden contraction again, flow stream velocity vector size realizes prominent
Change process, flow direction are irregular arrangement, and this adds increased the losses of pump inlet section, not only influence pump overall operation efficiency,
Also there is abated effect to anti-cavitation performance, reduces the maximum suction lift of pump.The self priming pump suction chamber of the present invention, in reservoir chamber
Middle increase suction chamber, and after being designed as semispiral type structure, entire flow section area even variation is ensure that, to ensure to flow
The even variation of speed from small to large, flow direction also achieves even variation, effectively reduces fluid flow local diffusion and punching
Loss is hit, the way, increasing pump anti-cavitation surplus, to also further increase pump maximum suction lift, the application are improved
The maximum suction lift of energy-efficient self priming centrifugal pump is up to 0.5~1.0m.
The whole efficiency of the energy-efficient self priming centrifugal pump is 72~83%, and generally common self priming centrifugal pump is whole
Body efficiency is 50~65%, and the present invention significantly improves self-priming centrifugation by the way that the suction chamber of specific structure is arranged in reservoir chamber
The whole efficiency of pump.
As preferred technical solution：
Energy-efficient self priming centrifugal pump as described above, the suction chamber is interior equipped with the point water plate that cross section is V-arrangement, divides
The height of water plate is identical as suction chamber, and point water plate is seamlessly transitted with the side plate where helix b and the side plate where curve a respectively
Connection.Liquid stream is roughly divided into two strands after entering suction chamber, one is along the side plate flowing where curve c and helix b, another burst of edge
Side plate flowing where curve a generates impact in the side plate where helix b and the side plate intersection where curve a and forms whirlpool
Whirlpool influences the efficiency of self priming centrifugal pump, and liquid flow impact can be effectively prevent after point water plate is arranged, and is conducive to improve efficiency.
Energy-efficient self priming centrifugal pump as described above, the wall thickness of the point water plate is identical as side plate, same wall thickness, casting
Part cooling velocity is identical, it is not easy to casting flaw occurs, weldment can reduce welding deformation, while also can guarantee intensity requirement.
Energy-efficient self priming centrifugal pump as described above, the reservoir chamber are cylinder-like structure, with suction chamber and into
Water pipe welds.Reservoir chamber size is designed according to pump condition.
Energy-efficient self priming centrifugal pump as described above, the line d are camber line, and the side plate where line d is reservoir chamber side
Wall.
The radius of curvature of energy-efficient self priming centrifugal pump as described above, curve a is less than curve c, the side where curve a
Plate is equivalent to selection inner ring, and the side plate where curve c is equivalent to rotation outer ring, and the radius of curvature of curve a is more advantageous less than curve c
It is required in meeting uniform motion.
Energy-efficient self priming centrifugal pump as described above, the water inlet pipe are bend pipe, and each position cross-sectional area is identical
And the cross-sectional area equal to hole k.
Energy-efficient self priming centrifugal pump as described above, the water outlet bore are more than or equal to impeller inlet diameter, this
It is because the flow velocity from outlet pipe to impeller inlet wants gradual and is unable to the sudden turn of events, to reduce hydraulic loss, outlet pipe is slightly larger than impeller
Inlet diameter may make outlet pipe flow velocity to be less than impeller inlet flow velocity, and the small corresponding pressure of flow velocity can be big, can reduce liquid stream vapour in this way
Change, is conducive to the anti-cavitation performance of elevator pump.
Energy-efficient self priming centrifugal pump as described above, the hole h and hole k are circular hole or square hole.Hole h and hole k shapes
It is without being limited thereto, it can be according to actual use situation adjustment.
Energy-efficient self priming centrifugal pump as described above, the through-hole are located on lower plate, can also be positioned close to
On the side plate of lower plate, as long as being conducive to the indoor water of water storage enters suction chamber.
Invention mechanism：
The suction chamber of self priming pump mainly rises to impeller inlet liquid stream guiding function, allows liquid stream to enter impeller without impact, this is just
Drainage is dredged to the liquid stream for entering impeller, flow velocity size cannot mutate on each overflow section, flow direction
It cannot mutate, because the process reduced after amplification suddenly is all with energy loss, also referred to as waterpower local losses, Water Authority
Portion's loss is big, and liquid stream enters that impeller pressure is low, and when flow stream pressure is less than pressure for vaporization, cavitation can occur for impeller, while can make
Pump discharge pressure reduces, and the efficiency of pump reduces, and for the problem, the present invention devises completely new suction chamber so that liquid stream is through water inlet
Suction chamber is managed, flow velocity size is held essentially constant, and each area of section is equal, reduces hydraulic loss, improves the efficiency of pump and anti-vapour
Corrosion energy.
Hydraulic loss calculation formula is as follows：
H=ζ vs^2/(2g)；
In formula, h indicates loss pressure, unit m；ζ is loss coefficient, is that constant and area of section become with directional velocity
Change it is related, variation it is bigger, loss coefficient is bigger, vsFor flow section flow velocity, unit m/s, g are acceleration of gravity, and unit is
m/s2, " ^ " expression square.Found out by above formula, total hydraulic loss and loss coefficient and flow velocity are directly related, to improve pump efficiency
Rate, it is necessary to reduce the value of both this.
The suction chamber outer profile busbar of the present invention is 2 sections of 360 ° of directions point, and only 180 ° use helix structure, it is assumed that leaf
Wheel inlet velocity is v0, on 180 ° of sections, flow velocity is (1/2) v for that0, suction chamber height is certain, it may be determined that 180 ° of section radial directions
Size is 0 simultaneously for 0 ° of area of section, and no liquid stream flows through, and identical in 0 ° to 180 ° each cross sectional flow rate is all (1/2) v0, lead to
The even variation of over-angle, overflow section area angularly different also uniform transitions, suction chamber height is constant, also just realizes radial
Size uniform changes.By 360 ° of impeller inlet cyclotomy circumferential direction, each angle inflow should be uniform, and liquid stream is in suction chamber along wall surface
Spiral motion, wherein there is 180 ° to use helix structure, the liquid flow flowed through on 180 ° of sections that should be evenly distributed in
On 0 °~180 ° sections, 180 ° of areas of section are set to s8, by angle bisecting be 8 parts, 22.5 ° every part, area of section s1、
s2……s8；s1=1/8s8；s2=2/8s8..., and so on；Also, this guarantees each section for the flow in each section
Surface current speed is equal, and since helix structure mean curvature radius is small, has guiding role to fluid flow, it is not easy to form flowing whirlpool
Whirlpool ensure that section liquid stream flow direction even variation, while fluid flow, so hydraulic efficiency is high, is improved without hydraulic blow
Pump whole efficiency.
Advantageous effect：
(1) energy-efficient self priming centrifugal pump of the invention, using full runner the Hydraulic Design, operational efficiency is high, energy saving drop
Consumption；
(2) energy-efficient self priming centrifugal pump of the invention, self-priming performance is good, and self-priming time is short, and suction lift is high；
(3) energy-efficient self priming centrifugal pump of the invention takes into account efficiency, self-priming performance, hydraulic performance and reliable for operation
Property, great application prospect；
(4) energy-efficient self priming centrifugal pump of the invention is mounted on ground, and use scope is wide, and repair and maintenance is convenient；
(5) energy-efficient self priming centrifugal pump of the invention only needs to start for the first time to pour water, is not necessarily to pour water later, operate
Simply.
Description of the drawings
Fig. 1 is the fluid reservoir and suction chamber structural schematic diagram of the energy-efficient self priming centrifugal pump of the present invention.
Fig. 2 is the fluid reservoir of the energy-efficient self priming centrifugal pump of the present invention and the front view of suction chamber；
Fig. 3 is the fluid reservoir and suction chamber sectional view of the energy-efficient self priming centrifugal pump of the present invention；
Wherein, 1 is water inlet pipe, and 2 be reservoir chamber, and 3 be suction chamber, and 4 be outlet pipe, and 5 be point water plate.
Specific implementation mode
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
It is bright rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, art technology
Personnel can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Fixed range.
Energy-efficient self priming centrifugal pump, including water inlet pipe 1, reservoir chamber 2 and impeller, as illustrated in fig. 1 and 2, in reservoir chamber 2
Equipped with suction chamber 3, suction chamber 3 is hollow structure, is surrounded by upper plate, lower plate and with the orthogonal side plate of the two, is inhaled
The bottom of hydroecium lower plate is provided with through-hole.Be provided with hole h on upper plate and upwardly extend to form outlet pipe 4 along hole wall, outlet pipe 4 with
Impeller inlet connects, and 4 internal diameter of outlet pipe is more than or equal to impeller inlet diameter.The edge line of side plate cross section is comma shape, such as Fig. 3
It is shown, be linked in sequence and formed by curve a, helix b, curve c and line d, curve a and curve c be smoothed curve and with helix b
Between seamlessly transit, the radius of curvature of curve a is less than curve c, and the side plate where line d is provided with hole k, and hole k is connect with water inlet pipe, into
Water pipe is bend pipe, and each position cross-sectional area is identical and is equal to the cross-sectional area of hole k.Hole h and hole k is circular hole or square hole, and line d is
Camber line, the side plate where line d are the side wall of reservoir chamber 2.
The intersection point of helix b and curve a and curve c are respectively m and n, and the center of circle o of m, n and hole h are located along the same line, m
With at a distance from o be less than n at a distance from o, be R with the point on helix b and the line segment length between o, on helix b point with
The angle of the line segment between line segment and m and o between o is θ, R=D0(A+B θ/C), D0For impeller inlet diameter, A=0.6~
0.7, B=0.06~0.1, C=1 °.
Equipped with the point water plate 5 that cross section is V-arrangement in suction chamber 3, the height of point water plate 5 is identical as suction chamber, point water plate
Wall thickness is identical as side plate, and point water plate 5 is connected smoothly with the side plate where helix b and the side plate where curve a respectively.
Reservoir chamber 2 is cylinder-like structure, is welded with suction chamber 3 and water inlet pipe 1.
The efficiency of the energy-efficient self priming centrifugal pump of the present invention is 72~83%.
Claims (10)
1. energy-efficient self priming centrifugal pump, including water inlet pipe, reservoir chamber and impeller, it is characterized in that：Water suction is equipped in reservoir chamber
Room, suction chamber are hollow structure, are surrounded by upper plate, lower plate and with the orthogonal side plate of the two, the bottom of suction chamber
It is provided with through-hole；
It is provided with hole h on upper plate and upwardly extends to form outlet pipe along hole wall, outlet pipe is connect with impeller inlet, side plate cross section
Edge line be comma shape, be linked in sequence and formed by curve a, helix b, curve c and line d, curve a and curve c are smooth bent
It line and is seamlessly transitted between helix b, the side plate where line d is provided with hole k, and hole k is connect with water inlet pipe；
The intersection point of helix b and curve a and curve c are respectively m and n, and the center of circle o of m, n and hole h are located along the same line, m and o
Distance be less than n at a distance from o, be R with the point on helix b and the line segment length between o, with point and the o on helix b it
Between line segment and m and o between the angle of line segment be θ, R=D0(A+B θ/C), D0For impeller inlet diameter, A=0.6~0.7, B
=0.06~0.1, C=1 °；
The efficiency of the energy-efficient self priming centrifugal pump is 72~83%.
2. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that be equipped in the suction chamber transversal
Face be V-arrangement point water plate, the height of point water plate is identical as suction chamber, point water plate respectively with the side plate and curve a where helix b
The side plate at place is connected smoothly.
3. energy-efficient self priming centrifugal pump according to claim 2, which is characterized in that the wall thickness of the point water plate and side
Plate is identical.
4. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the reservoir chamber is cylindric ties
Structure is welded with suction chamber and water inlet pipe.
5. energy-efficient self priming centrifugal pump according to claim 4, which is characterized in that the line d is camber line, line d institutes
Side plate be reservoir chamber side wall.
6. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the radius of curvature of curve a is less than
Curve c.
7. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the water inlet pipe is bend pipe,
Each position cross-sectional area is identical and is equal to the cross-sectional area of hole k.
8. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the water outlet bore be more than etc.
In impeller inlet diameter.
9. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the hole h and hole k be circular hole or
Square hole.
10. energy-efficient self priming centrifugal pump according to claim 1, which is characterized in that the through-hole is located at lower plate
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775505.3A CN108661917B (en) | 2018-07-16 | 2018-07-16 | High-efficiency energy-saving self-priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810775505.3A CN108661917B (en) | 2018-07-16 | 2018-07-16 | High-efficiency energy-saving self-priming centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108661917A true CN108661917A (en) | 2018-10-16 |
| CN108661917B CN108661917B (en) | 2024-03-19 |
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ID=63789226
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810775505.3A Active CN108661917B (en) | 2018-07-16 | 2018-07-16 | High-efficiency energy-saving self-priming centrifugal pump |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010374A1 (en) * | 2003-07-30 | 2005-02-03 | Varisco Spa | Self-priming centrifugal pump |
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN107503948A (en) * | 2017-09-30 | 2017-12-22 | 江苏武新泵业有限公司 | A kind of inlet type double helix spiral case self priming pump with one heart |
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN208416964U (en) * | 2018-07-16 | 2019-01-22 | 上海瑞晨环保科技股份有限公司 | Energy-efficient self priming centrifugal pump |
-
2018
- 2018-07-16 CN CN201810775505.3A patent/CN108661917B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005010374A1 (en) * | 2003-07-30 | 2005-02-03 | Varisco Spa | Self-priming centrifugal pump |
| CN102966601A (en) * | 2012-12-11 | 2013-03-13 | 江苏大学 | Hydraulic design method of half-spiral water-sucking chamber for pump |
| CN107965470A (en) * | 2017-05-08 | 2018-04-27 | 宁波方太厨具有限公司 | A kind of centrifugal blower volute for range hood |
| CN107503948A (en) * | 2017-09-30 | 2017-12-22 | 江苏武新泵业有限公司 | A kind of inlet type double helix spiral case self priming pump with one heart |
| CN208416964U (en) * | 2018-07-16 | 2019-01-22 | 上海瑞晨环保科技股份有限公司 | Energy-efficient self priming centrifugal pump |
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| Publication number | Publication date |
|---|---|
| CN108661917B (en) | 2024-03-19 |
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Address after: 201800 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant after: SHANGHAI RICHEN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 201800 2, 1501, 1519, 1533, Chengliu Middle Road, Jiading District, Shanghai. Applicant before: SHANGHAI RICHEN CO.,LTD. |
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