CN101581312A - Mass-flow self-sucking pump - Google Patents
Mass-flow self-sucking pump Download PDFInfo
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- CN101581312A CN101581312A CNA2009101458641A CN200910145864A CN101581312A CN 101581312 A CN101581312 A CN 101581312A CN A2009101458641 A CNA2009101458641 A CN A2009101458641A CN 200910145864 A CN200910145864 A CN 200910145864A CN 101581312 A CN101581312 A CN 101581312A
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- return pipe
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Abstract
The invention discloses a mass-flow self-sucking pump; a nozzle assembly is arranged outside an S-shaped bent pipe which is opposite to the inlet of an impeller; the nozzle assembly is provided with two or more nozzles which are arranged side by side; a return pipe communicating an air-water separation chamber of the self-sucking pump and the nozzles is arranged under the nozzles; the inlet of the return pipe is a downward inclined plane; the nozzle assembly is provided with a water return valve plate with a certain weight; before starting and during the starting process, the self-sucking pump is in open position as the weight of the water return valve plate is larger than the pressure acting on the water return valve plate; after the self-sucking pump finishes the starting, the pressure of the air-water separation chamber is increased and the pressure acting on the water return valve plate is larger than the weight of the water return valve plate so as to lead the return pipe to be closed, thus improving the pump efficiency of the self-sucking pump in normal operation. The self-sucking pump uses the two or more nozzles which are arranged side by side, thus improving the starting speed of the self-sucking pump.
Description
Affiliated technical field
The present invention is a kind of mass-flow self-sucking pump, being called for short self-priming pump, belonging to the universal machine product---the pump class especially can rely on a small amount of water in the pump, utilize centrifugal impeller that the inlet pipeline air is taken out light, utilize barometric pressure that the water in the water inlet pool that is lower than the water pump import is drawn up next self-priming pump.
Background technique
At present, known self-priming pump divides two kinds of internal-mixing and external mixture types, and internal-mixing divides two kinds of injection apparatus and no injection apparatus is arranged, wherein have the internal-mixing self-priming pump of injection apparatus have last water soon, the high advantage of suction journey, on small-sized self-priming pump, obtained widespread usage.But the self-priming pump that injection apparatus is arranged at present, the overwhelming majority has only a nozzle, when this structure is used on the bigger self-priming pump of flow, starting time is just much long, because the efficient of giant suction air is lower than small nozzle, the efficient of the suction air of saying here is the speed of suction air and the ratio of nozzle inflow-rate of water turbine.All there are this defective in model utility that has earlier " sprinkling irrigation self-priming pump " (notice of authorization CN2292927Y) and model utility " the high-lift self-priming pump of a kind of big flow " (notice of authorization CN2541639Y), therefore be used on the mass-flow self-sucking pump, starting time can be very long.The patent of invention that has earlier " a kind of big-flow self-priming centrifugal pump " (notice of authorization CN100451343C), provide and in mass-flow self-sucking pump, adopted multi-jet scheme, but the rectangular nozzle that this patent of invention adopts, the big defective of the pressure loss is arranged, jeting effect in actual the use is not so good, also have some data to introduce the injection apparatus of a plurality of round nozzle annular configuration, because it is very little that the space of injection apparatus is installed in the self-priming pump, multiple jets is in narrow injection apparatus, be easy to pool one large stream, the efficient of its suction air and a giant similar, still undesirable.
Also have, existing self-priming pump much is unkitted back-water valve (BWV), and some reinstall the self-priming pump of water valve also because the sealing effect of back-water valve (BWV) is bad, make pump efficiency lower, also are important deficiencys.
Summary of the invention
In order to overcome the deficiency that existing mass-flow self-sucking pump starting time is long, pump efficiency is low, the invention provides a kind of multiinjector self-priming pump that comprises back-water valve (BWV).
The technical solution adopted for the present invention to solve the technical problems is:
1. in self-priming pump, a S shape bend pipe is arranged, the last client link inlet pipeline of S shape bend pipe, the lower end of S shape bend pipe has a segment length to be not more than 10 millimeters straight tube, its diameter is identical with the impeller inlet diameter, align straight-through with impeller inlet, in the S shape bend pipe outside over against impeller inlet, adorn a nozzle assembly, the top of nozzle assembly is two or more round nozzles side by side, nozzle centerline and impeller center line are on same horizontal plane, a return pipe is arranged at the bottom of nozzle assembly, and air-water separation chamber in its UNICOM's self-priming pump and the backwater room before the nozzle inlet are more than the twice of the area of passage of return pipe greater than the exit area of nozzle sum, the import of return pipe is a downward-sloping plane, and the angle of inclined-plane and horizontal plane is greater than 100 degree.Two or more round nozzles side by side and return pipe are made on the part, become nozzle assembly with backwater valve plate mutual group.
Before self-priming pump starts, in self-priming pump, pour into a small amount of water earlier, the water that is higher than water intake is deposited incessantly, and promptly the upper end of inlet pipeline and S shape bend pipe all is an air.After self-priming pump starts, water in the S shape bend pipe is beaten air-water separation chamber in the self-priming pump by the impeller suction, make impeller inlet be in vacuum state, the lower end of related S shape bend pipe also is in vacuum state, this causes the air in the inlet pipeline to spread toward impeller inlet on the one hand, also produce bigger pressure difference on the other hand in the inlet/outlet both sides of nozzle, make the liquid in air-water separation chamber, return pipe and the backwater room form the lower end that S shape bend pipe is passed in high-speed jet, wrap up in band jet ambient air and be sent to impeller inlet by nozzle.Jet high-speed caused the high vacuum around the jet again, and this air of having accelerated again in the inlet pipeline spreads to jet, thereby the speed of having accelerated to pump air has just improved the toggle speed of self-priming pump.
Two or more round nozzles side by side pump the efficient height of air than a round nozzle or a plurality of rectangular nozzle or a plurality of nozzles of being circular layout, so its toggle speed can be more hurry up, and this is a main innovation of the present invention.
Return pipe and nozzle are made on the part, become nozzle assembly with backwater valve plate mutual group, and the import of return pipe be one with the angle of horizontal plane inclined-planes greater than 100 degree, also be innovation of the present invention.Because the position of return pipe is in the bottom of nozzle assembly, so the import of return pipe is in the bottom of air-water separation chamber, and the inlet face of return pipe is downward simultaneously, so the easier return pipe that enters of the flowing fluid ratio gas of air-water separation chamber, this has also improved pumping speed.
2. the backwater valve plate on the nozzle assembly is a composite members that the rubber parcel cast iron of constant weight is arranged, the weight of backwater valve plate, is made the hinge that backwater valve plate and nozzle assembly combine as a whole at the active force on the valve plate and less than the active force of 10 meters differential pressure actions on valve plate greater than 8 meters differential pressure actions with rubber.
The backwater valve plate is the composite members of the rubber parcel cast iron that constant weight arranged, the hinge that backwater valve plate and nozzle assembly combine as a whole made with rubber, and also be innovation of the present invention.Adopt the backwater valve plate of counterweight manufactured can not close at the startup operating mode assurance return pipe of inhaling journey below 8 meters, and the assurance return pipe is reliably closed under the nominal situation of lift more than 10 meters, make the hinge of backwater valve plate with rubber, make that the back-water valve (BWV) plate structure is simple, good sealing effect.
The invention has the beneficial effects as follows, improved the toggle speed of self-priming pump, and the pump efficiency when having improved the self-priming pump proper functioning.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic representation of one embodiment of the invention;
Fig. 2 is two views of the nozzle assembly of the embodiment of the invention, and wherein, right figure is the left view of left figure, and left figure is that right figure is by the sectional view that dissects symbol.
1. self-priming pumps among the figure, 2. impeller, 3. air-water separation chamber, 4.S shape bend pipe, 5. inlet pipeline, 6. nozzle, 7. backwater room, 8. return pipe, 9. return pipe import inclined-plane, the 10. hinge of backwater valve plate, 11. backwater valve plates.
Embodiment
Embodiment illustrated in fig. 1 is a mass-flow self-sucking pump, and Fig. 2 is this embodiment's main innovation part a---nozzle assembly.In self-priming pump 1, a S shape bend pipe 4 is arranged, the last client link inlet pipeline 5 of S shape bend pipe, the lower end of S shape bend pipe has a segment length to be not more than 10 millimeters straight tube, its diameter is identical with the inlet diameter of impeller 2, align straight-through with impeller inlet, in the S shape bend pipe outside over against impeller inlet, adorn a nozzle assembly, the top of nozzle assembly is two round nozzles 6 side by side, nozzle centerline and impeller center line are on same horizontal plane, a return pipe 8 is arranged at the bottom of nozzle assembly, and air-water separation chamber 3 in its UNICOM's self-priming pump and the backwater room 7 before the nozzle inlet are more than the twice of the area of passage of return pipe greater than the exit area of nozzle sum, the import of return pipe is a downward-sloping plane, and inclined-plane 9 is spent greater than 100 with the angle of horizontal plane.Two round nozzles 6 side by side are made on the part with return pipe 8, with the backwater valve plate 11 common nozzle assemblies of forming.
Before self-priming pump 1 starts, in self-priming pump, pour into a small amount of water earlier, the water that is higher than water intake is deposited incessantly.The upper end that is inlet pipeline 5 and S shape bend pipe 4 all is an air.After self-priming pump 1 starts, water in the S shape bend pipe is beaten air-water separation chamber 3 in the self-priming pump by impeller 2 suctions, make impeller inlet be in vacuum state, the lower end of related S shape bend pipe also is in vacuum state, this causes the air in the inlet pipeline to spread toward impeller inlet on the one hand, also produce bigger pressure difference on the other hand in the inlet/outlet both sides of nozzle 6, make the liquid in air-water separation chamber 3, return pipe 8 and the backwater room 7 form the lower end that S shape bend pipe is passed in high-speed jet, wrap up in band jet ambient air and be sent to impeller inlet by nozzle.Jet high-speed caused the high vacuum around the jet again, and this air of having accelerated again in the inlet pipeline spreads to jet, thereby the speed of having accelerated to pump air has just been accelerated the toggle speed of self-priming pump.
When self-priming pump 1 is in starting state, the self-priming lift of pump approximates the suction journey of self-priming pump, if the suction journey of self-priming pump is no more than 8 meters at most, as long as the weight of backwater valve plate is greater than the active force of 8 meters differential pressure actions on valve plate so, the backwater valve plate 11 sagging position that is bound to keep under action of gravity just can guarantee that return pipe can not close in the startup operating mode of inhaling journey below 8 meters.
When self-priming pump 1 is in normal working, the self-priming lift of pump is necessarily greater than the suction journey of self-priming pump, be not less than 10 meters if the self-priming lift of pump is minimum, as long as the weight of backwater valve plate is less than the active force of 10 meters differential pressure actions on valve plate so, backwater valve plate 11 will be adjacent to the import inclined-plane 9 of return pipe under pressure, return pipe 8 is closed, reliably close so under the nominal situation of lift more than 10 meters, can guarantee return pipe.
Adopt counterweight manufactured backwater valve plate, the weight that makes the backwater valve plate greater than 8 meters differential pressure actions at the active force on the valve plate and less than the active force of 10 meters differential pressure actions on valve plate, be easy to accomplish, and its counterweight cast iron wraps up with rubber, do sealing gasket with rubber covering, do the measures such as hinge of backwater valve plate with rubber, make that the back-water valve (BWV) plate structure is simple, good sealing effect.
Claims (2)
1. mass-flow self-sucking pump, in self-priming pump, a S shape bend pipe is arranged, the last client link inlet pipeline of S shape bend pipe, the lower end of S shape bend pipe has a segment length to be not more than 10 millimeters straight tube, its diameter is identical with the impeller inlet diameter, align straight-through with impeller inlet, in the S shape bend pipe outside over against impeller inlet, adorn a nozzle assembly, it is characterized in that: the top of nozzle assembly is two or more round nozzles side by side, and nozzle centerline and impeller center line are on same horizontal plane, and a return pipe is arranged at the bottom of nozzle assembly, air-water separation chamber in its UNICOM's self-priming pump and the backwater room before the nozzle inlet, more than the twice of the area of passage of return pipe greater than the exit area of nozzle sum, the import of return pipe is a downward-sloping plane, and the angle of inclined-plane and horizontal plane is greater than 100 degree.Two or more round nozzles side by side and return pipe are made on the part, become nozzle assembly with backwater valve plate mutual group.
2. self-priming pump as claimed in claim 1, it is characterized in that: the backwater valve plate on the nozzle assembly is a composite members that the rubber parcel cast iron of constant weight is arranged, the weight of backwater valve plate, is made the hinge that backwater valve plate and nozzle assembly combine as a whole at the active force on the valve plate and less than the active force of 10 meters differential pressure actions on valve plate greater than 8 meters differential pressure actions with rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101458641A CN101581312B (en) | 2009-06-10 | 2009-06-10 | Mass-flow self-sucking pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101458641A CN101581312B (en) | 2009-06-10 | 2009-06-10 | Mass-flow self-sucking pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101581312A true CN101581312A (en) | 2009-11-18 |
| CN101581312B CN101581312B (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101458641A Expired - Fee Related CN101581312B (en) | 2009-06-10 | 2009-06-10 | Mass-flow self-sucking pump |
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| Country | Link |
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| CN (1) | CN101581312B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286311A (en) * | 2016-08-25 | 2017-01-04 | 陈兆红 | The self-priming centrifugal pump that backwater hole can be automatically switched off |
| CN106499638A (en) * | 2016-11-15 | 2017-03-15 | 江苏芬奇工业设备制造有限公司 | A kind of exterior mixing return port self-closing self priming pump |
| CN106762688A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of self priming pump |
| CN111828340A (en) * | 2020-06-17 | 2020-10-27 | 普轩特泵业股份有限公司 | High-efficiency energy-saving self-suction centrifugal hydraulic system |
| CN114151350A (en) * | 2021-12-03 | 2022-03-08 | 扬州弘跃机械有限公司 | High-efficient mixed flow pump |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1225596B (en) * | 1988-09-26 | 1990-11-22 | Calpeda A Spa | SELF-PRIMING EJECTOR PUMP. |
| CN1776233A (en) * | 2005-11-30 | 2006-05-24 | 江苏大学 | High-flow self-priming centrifugal pump |
| CN100451343C (en) * | 2006-01-19 | 2009-01-14 | 江苏大学 | Big-flow self-priming centrifugal pump |
| CN1815036A (en) * | 2006-03-03 | 2006-08-09 | 江苏大学 | Large-flow self-suction centrifugal pump |
| CN201439760U (en) * | 2009-06-10 | 2010-04-21 | 江苏大学 | Mass-flow self-sucking pump |
-
2009
- 2009-06-10 CN CN2009101458641A patent/CN101581312B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286311A (en) * | 2016-08-25 | 2017-01-04 | 陈兆红 | The self-priming centrifugal pump that backwater hole can be automatically switched off |
| CN106286311B (en) * | 2016-08-25 | 2018-08-03 | 陈兆红 | The self-priming centrifugal pump that backwater hole can be automatically closed |
| CN106499638A (en) * | 2016-11-15 | 2017-03-15 | 江苏芬奇工业设备制造有限公司 | A kind of exterior mixing return port self-closing self priming pump |
| CN106762688A (en) * | 2016-11-15 | 2017-05-31 | 江苏芬奇工业设备制造有限公司 | A kind of self priming pump |
| CN111828340A (en) * | 2020-06-17 | 2020-10-27 | 普轩特泵业股份有限公司 | High-efficiency energy-saving self-suction centrifugal hydraulic system |
| CN114151350A (en) * | 2021-12-03 | 2022-03-08 | 扬州弘跃机械有限公司 | High-efficient mixed flow pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101581312B (en) | 2011-06-29 |
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Granted publication date: 20110629 Termination date: 20160610 |
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| CF01 | Termination of patent right due to non-payment of annual fee |