CN101294580B - Spiral flow constant-pressure pump - Google Patents
Spiral flow constant-pressure pump Download PDFInfo
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- CN101294580B CN101294580B CN2007100980315A CN200710098031A CN101294580B CN 101294580 B CN101294580 B CN 101294580B CN 2007100980315 A CN2007100980315 A CN 2007100980315A CN 200710098031 A CN200710098031 A CN 200710098031A CN 101294580 B CN101294580 B CN 101294580B
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- flow constant
- pressure pump
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- 238000005452 bending Methods 0.000 claims description 35
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 2
- -1 this Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention relates to a centrifugal pump and discloses a spiral flow constant-pressure pump in particular. The spiral flow constant-pressure pump comprises a pump shell and an impeller; wherein, an inner wall of the pump shell is arc-shaped; the impeller comprises a back cover plate and a plurality of front blades, wherein the back cover plate is provided with a hub part, and the front blades are positioned in the front of the back cover plate and formed as a whole with the back cover plate; each front blade bends towards the counter-clockwise direction and inclines towards the clockwise direction in the position close to the circular edge of the back cover plate so as to form a bent and inclined part with a certain included angle with the front surface of the back cover plate. The spiral flow constant-pressure pump of the invention enables liquid in a pump chamber to generate longitudinal flow towards the direction of a pump front cover, and has rotational flow at the same time, thus forming a spiral flow in the pump, so that liquid flow enter the space between the front blades for a plurality of times and the pressure of the space is lifted; compared with the prior spiral flow constant-pressure pump, the pressure of the pump outlet is higher and more stable.
Description
Technical field
The present invention relates to centrifugal pump, specifically, relate to a kind of spiral flow constant-pressure pump.
Background technique
CN2764967Y discloses a kind of eddy flow constant pressure pump.This eddy flow constant pressure pump comprises a pump housing, a pump protecgulum, a pump postoperculum, a pump shaft, an impeller and a motor.Pump postoperculum is fixedly mounted on the front side of the pump housing, and the pump protecgulum is fixedly mounted on the front side of pump postoperculum, the common pump case that constitutes a formation one pump chamber of pump protecgulum and pump postoperculum.Pump shaft is rotatably supported in the pump housing by bearing, and the forward part of pump shaft is positioned at the filler that is installed in the pump postoperculum stuffing box, and the front end of pump shaft stretches in the pump chamber, and impeller is fixedly mounted on the front end of pump shaft.There is a horizontal liquid-inlet front side of pump protecgulum, and there is a vertical liquid outlet on the right side.Impeller is by the back shroud of a belt wheel hub and be positioned at a plurality of front vanes and a plurality of rear blade that both sides and back shroud before and after the back shroud form one and form.Front vane is than rear blade height.As shown in Figure 6 and Figure 7, front vane 10 begins from the some A with a certain distance from back shroud 20 center of circle O, tilt to clockwise direction with back shroud 20 vertical being in line, form certain angle with line from center of circle O to front vane starting point A, near the some B place of back shroud 20 circular edges to bending counterclockwise and to inclination counterclockwise, form certain angle with the front surface of back shroud 20.The point D of the outward edge 12 of front vane 10 from the some C of the back root part 11 of front vane 10 to the preceding free edge 13 that is decorated with parallel lines of front vane 10 slopes inwardly.Pump protecgulum inwall is a circular arc.This eddy flow constant pressure pump, because front vane 10 tilts to bending counterclockwise and to counter clockwise direction in the part of contiguous back shroud 20 circular edges, can make the liquid in the pump chamber produce eddy flow, thereby pump discharge pressure is improved to some extent, and make pump discharge pressure keep constant substantially.But, because front vane 10 tilts to bending counterclockwise and to counter clockwise direction in the part of contiguous back shroud 20 circular edges, the angle a of the center line of front vane 10 these part back root parts 11 shown in Figure 6 and the AB section center line of front vane 10 is decorated with the angle b of the AB section center line of the center line of preceding free edge portion 13 of parallel lines and front vane 10 less than front vane 10 these parts, the absolute velocity of free edge portion 13 is left the absolute velocity of back root part 11 before making liquid leave greater than liquid, like this, liquid in the pump chamber can not produce to the vertical of pump protecgulum direction and flow, and pressure is further raise.
Summary of the invention
The present invention to solve existing eddy flow constant pressure pump pressure low problem, a kind of spiral flow constant-pressure pump is provided.
Spiral flow constant-pressure pump of the present invention, comprise a pump case and an impeller, the inwall of pump case is a circular arc, impeller comprises that one has the back shroud of a hub portion and is positioned at the back shroud front side and a plurality of front vanes of back shroud formation one, it is characterized in that, each front vane forms the bending incline section that forms certain angle with the front surface of back shroud tilting to bending counterclockwise and to clockwise direction near back shroud circular edge place.
Spiral flow constant-pressure pump of the present invention, because front vane is tilting to bending counterclockwise and to clockwise direction near back shroud circular edge place, form the bending incline section that forms certain angle with the front surface of back shroud, can make the liquid in pump chamber produce vertically flowing to pump protecgulum direction, has rotational flow simultaneously, thereby in pump, form a kind of spiral flow, the space that liquid is flowed between the front vane that repeatedly enters impeller is boosted, compare with existing eddy flow constant pressure pump, pump discharge pressure is higher, and is more stable.
Spiral flow constant-pressure pump of the present invention also comprises and has a following technical characteristics:
The outward edge of bending incline section slopes inwardly from back root part to preceding free edge 3 ° to 10 °.
The outward edge of bending incline section slopes inwardly 6 ° from back root part to preceding free edge.
The Inlet cone angle of front vane is 30 ° to 60 °.
The Inlet cone angle of front vane is 45 °.
The exit angle of the preceding free edge of bending incline section is 90 ° to 130 °.
The exit angle of the preceding free edge of bending incline section is 100 °.
The exit angle of the back root part of bending incline section is 110 ° to 140 °.
The exit angle of the back root part of bending incline section is 130 °.
The inwall of circular arc pump case comprises that anterior radius is that the radius at circular arc portion, the middle part of R1 is the skew lines section part that tilts to the center line of pump case at the circular arc portion of R2 and rear portion from the front portion to the rear portion, anterior radius is that the radius at circular arc portion, the middle part of R1 is that the skew lines section part that tilts to the center line of pump case from the front portion to the rear portion at the circular arc portion of R2 and rear portion rotates a circle around the center line of pump case and forms the inwall of pump case, and radius R 1 is greater than radius R 2.
Description of drawings
Below in conjunction with the drawings and specific embodiments spiral flow constant-pressure pump of the present invention is further described.
Fig. 1 is the vertical profile schematic representation of spiral flow constant-pressure pump of the present invention;
Fig. 2 is that the back shroud of impeller of spiral flow constant-pressure pump of the present invention and the master of the front vane on the back shroud front surface look schematic representation;
Fig. 3 is the back shroud of impeller of spiral flow constant-pressure pump shown in Figure 2 and the vertical profile schematic representation of front vane on the back shroud front surface and the rear blade on the back shroud rear surface;
Fig. 4 is the vertical profile schematic representation of the pump case of spiral flow constant-pressure pump of the present invention;
Fig. 5 is the schematic representation of the ear end face of pump case shown in Figure 4;
Fig. 6 is that the back shroud of impeller of eddy flow constant pressure pump of prior art and the master of the front vane on the back shroud front surface look schematic representation;
Fig. 7 is the back shroud of impeller of spiral flow constant-pressure pump shown in Figure 6 and the vertical profile schematic representation of front vane on the back shroud front surface and the rear blade on the back shroud rear surface.
Embodiment
Referring to Fig. 1, spiral flow constant-pressure pump of the present invention comprises a pump housing 100, a pump case 200, a pump shaft 300, an impeller 400 and a motor 500.
The shape of the front vane 450 of impeller 400 as shown in Figures 2 and 3, the AB section of the front vane 10 of the HI section of front vane 450 and Fig. 6 and existing eddy flow constant pressure pump impeller shown in Figure 7 is identical, but tilt to bending counterclockwise and to clockwise direction at some I place, form the bending incline section that forms certain angle with the front surface of back shroud 460 near back shroud 460 circular edges.The point K of outward edge 452 from the some J of back root part 451 to the preceding free edge 453 that is decorated with parallel lines of bending incline section slopes inwardly, and angle of inclination e is 3 ° to 10 °, preferred 6 °.Because front vane 450 tilts to bending counterclockwise and to clockwise direction in the part of contiguous back shroud 460 circular edges, form the bending incline section that forms certain angle with the front surface of back shroud 460, the angle d of the HI section center line of the center line of bending incline section back root part 451 shown in Figure 2 and front vane 450 is decorated with the angle c of the HI section center line of preceding free edge portion's 453 center lines of parallel lines and front vane 450 greater than the bending incline section, the absolute velocity of free edge portion 453 is left the absolute velocity of back root part 451 before making liquid leave less than liquid, like this, liquid in the pump chamber can produce vertically flowing to pump protecgulum direction, has rotational flow simultaneously, thereby in pump, form a kind of spiral flow, liquid stream repeatedly enters the space between these front vane 450 anticlockwise a plurality of front vanes 450, constantly boosted, and after reaching maximum pressure, kept constant voltage.The Inlet cone angle g of front vane 450 is 30 ° to 60 °, preferred 45 °.The exit angle p that the bending incline section is decorated with the free edge portion 453 of parallel lines is 90 ° to 130 °, preferred 100 °.The exit angle q of bending incline section back root part 451 is 110 ° to 140 °, preferred 130 °.Like this, can make delivery side of pump pressure higher, more stable.
Referring to seeing 4 and Fig. 5, the spiral flow that forms in pump for the front vane 450 that guides impeller 400 repeatedly enters the space between a plurality of front vanes 450 of impeller 400, so that further improve pump discharge pressure, the present invention changes into many arcs inwall with single circular arc inwall of the protecgulum of existing eddy flow constant pressure pump.As shown in Figure 4, the inwall of the pump case 200 of spiral flow constant-pressure pump of the present invention comprises that anterior radius is that the radius at arc part 260, the middle part of R1 is the skew lines section part 280 that tilts to the center line of pump case 200 at the arc part 270 of R2 and rear portion from the front portion to the rear portion.Anterior radius is the arc part 260 of R1, and the radius at middle part is that the skew lines section part 280 that tilts to the center line of pump case 200 from the front portion to the rear portion at the arc part 270 of R2 and rear portion rotates a circle around the center line of pump case 200 and forms the inwall of pump case 200.Radius R 1 is greater than radius R 2.
The vent centrifugal power of the front vane 450 bending incline section back root parts 451 of the impeller 400 of spiral flow constant-pressure pump of the present invention greater than front vane 450 bending incline sections before the vent centrifugal power of free edge, the also corresponding flow stream pressure that is higher than the preceding free edge of folding incline section of the flow stream pressure of bending incline section back root part, therefore the liquid flow path direction points to free edge before the bending incline section by bending incline section back root part, produce vertically and flow, produce rotational flow with impeller 400 simultaneously, thereby formation spiral flow, and then enter space between a plurality of front vanes 450 of impeller 400, given birth to once more and pressed, it acts on similar multistage centrifugal pump, obtains high-lift and constant pressure.In this process, the spiral case arc of pump case 200 has played good guide function.In addition, the gap is bigger between front vane 450 and pump case 200 inwalls, and when pumping contained the liquid of a large amount of solid impurities, front vane 450 was not easy to wear.
Claims (10)
1. spiral flow constant-pressure pump, comprise a pump case and an impeller, the inwall of pump case is a circular arc, impeller comprises that one has the back shroud of a hub portion and is positioned at the back shroud front side and a plurality of front vanes of back shroud formation one, it is characterized in that, each front vane forms the bending incline section that forms certain angle with the front surface of back shroud tilting to bending counterclockwise and to clockwise direction near back shroud circular edge place.
2. spiral flow constant-pressure pump according to claim 1 is characterized in that, the outward edge of blade bending incline section from the back root part to the blade before free edge slope inwardly 3 ° to 10 ° with respect to the axis of impeller in radial direction.
3. spiral flow constant-pressure pump according to claim 2 is characterized in that, the outward edge of blade bending incline section from the back root part to the blade before free edge slope inwardly 6 ° with respect to the axis of impeller in radial direction.
4. spiral flow constant-pressure pump according to claim 1 is characterized in that, the Inlet cone angle of front vane is 30 ° to 60 °.
5. spiral flow constant-pressure pump according to claim 4 is characterized in that, the Inlet cone angle of front vane is 45 °.
6. spiral flow constant-pressure pump according to claim 1 is characterized in that, the exit angle of the preceding free edge of bending incline section is 90 ° to 130 °.
7. spiral flow constant-pressure pump according to claim 6 is characterized in that, the exit angle of the preceding free edge of bending incline section is 100 °.
8. spiral flow constant-pressure pump according to claim 1 is characterized in that, the exit angle of the back root part of bending incline section is 110 ° to 140 °.
9. spiral flow constant-pressure pump according to claim 8 is characterized in that, the exit angle of the back root part of bending incline section is 130 °.
10. according to claim 1,2,3,4,5,6,7,8 or 9 described spiral flow constant-pressure pumps, it is characterized in that, the inwall of circular arc pump case comprises that anterior radius is the circular arc portion of R1, the radius at middle part is the skew lines section part that tilts to the center line of pump case from the front portion to the rear portion at the circular arc portion of R2 and rear portion, anterior radius is the circular arc portion of R1, the radius at middle part is that the skew lines section part that tilts to the center line of pump case from the front portion to the rear portion at the circular arc portion of R2 and rear portion rotates a circle around the center line of pump case and forms the inwall of pump case, and radius R 1 is greater than radius R 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100980315A CN101294580B (en) | 2007-04-26 | 2007-04-26 | Spiral flow constant-pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100980315A CN101294580B (en) | 2007-04-26 | 2007-04-26 | Spiral flow constant-pressure pump |
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| Publication Number | Publication Date |
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| CN101294580A CN101294580A (en) | 2008-10-29 |
| CN101294580B true CN101294580B (en) | 2010-04-21 |
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| CN2007100980315A Active CN101294580B (en) | 2007-04-26 | 2007-04-26 | Spiral flow constant-pressure pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339386A (en) * | 2010-11-24 | 2013-10-02 | 弗里德科股份公司 | Self-cleaning screw-type centrifugal wheel pump with recirculation behind the impeller |
| WO2015014211A1 (en) | 2013-07-30 | 2015-02-05 | 强胜精密机械(苏州)有限公司 | Spiral flow constant pressure pump |
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| CN102797698A (en) * | 2012-04-01 | 2012-11-28 | 苏州市世强流体技术有限公司 | Pump impeller |
| CN104308647B (en) * | 2014-10-11 | 2017-07-14 | 强胜精密机械(苏州)有限公司 | Gas-powered constant pressure pump cutting feeder and cutting fluid supply method |
| CN104895842A (en) * | 2015-05-13 | 2015-09-09 | 山东昊安金科新材料股份有限公司 | Spiral flow constant pressure pump |
| CN105604959B (en) * | 2015-12-24 | 2017-12-12 | 苏州经贸职业技术学院 | Powershift combined agricultural water pump |
| CN105648291B (en) * | 2016-01-27 | 2017-12-22 | 山东元昊机械有限公司 | High-strength alloy cast aluminium spiral flow constant-pressure pump material and its preparation method and application |
| CN105994521A (en) * | 2016-07-20 | 2016-10-12 | 江苏江南上道科技股份有限公司 | Chiffon cake and preparation method thereof |
| CN106895024B (en) * | 2017-05-04 | 2019-09-03 | 李世煌 | Spiral flow constant-pressure pump |
| CN107143520A (en) * | 2017-07-13 | 2017-09-08 | 新兴际华科技装备有限公司 | A kind of voltage stabilizing centrifugal pump |
| CN109399215A (en) * | 2018-11-23 | 2019-03-01 | 艾迪机器(杭州)有限公司 | A kind of elastomer is interior to flow room structure constant pressure centrifugal pump |
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| CN2572073Y (en) * | 2002-08-21 | 2003-09-10 | 北京建大流体技术研究院 | Impeller with lead-changeable impeller line for screw axial-flow pump |
| CN2584889Y (en) * | 2002-10-25 | 2003-11-05 | 北京建大流体技术研究院 | Whirlwind centrifugal constant-pressure spray fire pumps |
| CN2764967Y (en) * | 2005-01-28 | 2006-03-15 | 李世煌 | Eddy flow centrifugal constant pressure pump |
| CN2809287Y (en) * | 2005-07-22 | 2006-08-23 | 浙江工业大学 | Centrifugal pump impeller with radial blades |
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2007
- 2007-04-26 CN CN2007100980315A patent/CN101294580B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2572073Y (en) * | 2002-08-21 | 2003-09-10 | 北京建大流体技术研究院 | Impeller with lead-changeable impeller line for screw axial-flow pump |
| CN2584889Y (en) * | 2002-10-25 | 2003-11-05 | 北京建大流体技术研究院 | Whirlwind centrifugal constant-pressure spray fire pumps |
| CN2764967Y (en) * | 2005-01-28 | 2006-03-15 | 李世煌 | Eddy flow centrifugal constant pressure pump |
| CN2809287Y (en) * | 2005-07-22 | 2006-08-23 | 浙江工业大学 | Centrifugal pump impeller with radial blades |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339386A (en) * | 2010-11-24 | 2013-10-02 | 弗里德科股份公司 | Self-cleaning screw-type centrifugal wheel pump with recirculation behind the impeller |
| CN103339386B (en) * | 2010-11-24 | 2017-03-29 | 弗里德科股份公司 | Self-cleaning screw-type centrifugal wheel pump with recirculation after the impeller |
| US9709071B2 (en) | 2010-11-24 | 2017-07-18 | Frideco Ag | Self-cleaning screw-type centrifugal wheel pump with recirculation behind the impeller |
| WO2015014211A1 (en) | 2013-07-30 | 2015-02-05 | 强胜精密机械(苏州)有限公司 | Spiral flow constant pressure pump |
| DE202014010786U1 (en) | 2013-07-30 | 2016-08-22 | Johnson Precision Engineering (Suzhou) Co., Ltd. | Pressure pump with constant spiral flow |
Also Published As
| Publication number | Publication date |
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| CN101294580A (en) | 2008-10-29 |
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Application publication date: 20081029 Assignee: JOHNSON PRECISION ENGINEERING (SUZHOU) Co.,Ltd. Assignor: Li Shihuang Contract record no.: 2012320010182 Denomination of invention: Spiral flow constant-pressure pump Granted publication date: 20100421 License type: Exclusive License Record date: 20121219 |
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Addressee: Li Shihuang Document name: payment instructions |