CN105298857B - A kind of non-return valve of big-flow self-priming centrifugal pump self-suction system - Google Patents
A kind of non-return valve of big-flow self-priming centrifugal pump self-suction system Download PDFInfo
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- CN105298857B CN105298857B CN201510797975.6A CN201510797975A CN105298857B CN 105298857 B CN105298857 B CN 105298857B CN 201510797975 A CN201510797975 A CN 201510797975A CN 105298857 B CN105298857 B CN 105298857B
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Abstract
The present invention relates to a kind of non-return valve of big-flow self-priming centrifugal pump self-suction system, including suction casing, clack box is installed on the suction casing, valve seat is provided between the clack box and the suction casing, the valve seat is provided with through hole, and the through hole connects the clack box with the suction casing；Check-valves is arranged in the through hole, and the check-valves is connected with the through hole sliding pair；Nozzle air inlet pipe and jet nozzle are installed on the clack box.The beneficial effects of the present invention are：It is simple in construction, reliable in action, good seal performance, it is easy to cast, assembling is easy to maintenance, and cost is low etc..
Description
Technical field
The present invention relates to a kind of non-return valve of novel mass flow self-priming centrifugal pump self-suction system.
Background technology
By having carried out extensive market survey to big-flow self-priming centrifugal pump unit, sum up current big-flow self-priming from
The problem of heart pump unit is present：The self-priming principle and structure type of self-priming centrifugal pump are single, self-priming structure and self-priming principle
Research it is not deep enough, the self-priming performance of big-flow self-priming centrifugal pump is difficult to meet the needs of water and energy saving irrigation and market；State
Interior big-flow self-priming centrifugal pump unit manufacturer is less, in self-priming centrifugal pump manufacturing enterprise at home, to produce internal-mixing
Based on the self-priming centrifugal pump of exterior mixing structure, lack innovation, it is impossible to solve big-flow self-priming centrifugal pump self-priming performance.
Therefore, the applicant proposes a kind of non-return valve being used in novel mass flow self-priming centrifugal pump self-suction system, this is inverse
Only valve is used in self-priming system so that the type pump does not need additional servicing unit, whole to be completely with the running body of pump one
System is all driven by a diesel engine, and its feature is：It is simple in construction, reliable in action, good seal performance, it is easy to cast, assembling dimension
Repair conveniently, cost is low etc..
The content of the invention
It is an object of the invention to provide a kind of non-return valve being used in big-flow self-priming centrifugal pump self-suction system, the check
Valve is used in self-suction system so that self priming pump does not need additional servicing unit, and completely with the running body of pump one, whole system is all by one
Platform diesel engine drives.
To achieve the above object, the technical scheme taken of the present invention is：A kind of big-flow self-priming centrifugal pump self-suction system
Non-return valve, including suction casing, clack box is installed on the suction casing, valve seat, institute are provided between the clack box and the suction casing
State valve seat and be provided with through hole, the through hole connects the clack box with the suction casing；Check-valves is arranged in the through hole, institute
Check-valves is stated to be connected with the through hole sliding pair；Nozzle air inlet pipe and jet nozzle are installed on the clack box.
In such scheme, valve seat cambered surface is surrounded by positioned at the through hole on the valve seat, the check-valves is four paws
Bowl formula check-valves, one end that the four paws bowl formula check-valves is located at clack box are provided with bowl formula cambered surface, the valve seat cambered surface and the bowl
Formula cambered surface being capable of gluing, sealing；One end that the four paws bowl formula check-valves is located at suction casing is provided with spacer block.
In such scheme, a diameter of 40mm of the bowl formula cambered surface of the four paws bowl formula check-valves, the spacer block is uniform point
Four identical rubber spacer blocks of cloth.
In such scheme, slip height of the four paws bowl formula check-valves in through hole is total high for four paws bowl formula check-valves
7%-14%.
In such scheme, the central shaft of the nozzle air inlet pipe and the jet nozzle is conllinear.
In such scheme, filter screen is additionally provided with suction casing, the filter screen is located at below the check-valves.
In such scheme, the filter screen is bent to the circular arc that central angle is 90 degree, and material is copper.
In such scheme, the valve seat is bolted to connection with the clack box.
In such scheme, the internal diameter of the valve seat is 16mm, and height 19mm, its material is copper.
In such scheme, the suction casing, the material of the clack box is HT200.
Beneficial effects of the present invention：(1) non-return valve of the invention is used in self-suction system so that self priming pump need not be additional
Servicing unit, completely with the running body of pump one, (2) are simple in construction, reliable in action, good seal performance, are easy to cast, and assemble maintenance side
Just, cost is low etc..
Brief description of the drawings
Fig. 1 is the non-return valve structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, technical scheme is described in detail.
As shown in figure 1, a kind of non-return valve of big-flow self-priming centrifugal pump self-suction system, including suction casing 1, the suction casing
Clack box 4 is installed on 1, valve seat 3 is provided between the clack box 4 and the suction casing 1, the valve seat 3 is provided with through hole, described logical
Hole connects the clack box 4 with the suction casing 1；Check-valves 5 is arranged in the through hole, the check-valves 5 and the through hole
Sliding pair connects；Nozzle air inlet pipe 7 and jet nozzle 6 are installed on the clack box 4.Positioned at the through hole on the valve seat 3
Valve seat cambered surface 3-1 is surrounded by, the check-valves 5 is four paws bowl formula check-valves, and the four paws bowl formula check-valves is located at clack box 4
One end is provided with bowl formula cambered surface 5-1, the valve seat cambered surface 3-1 being capable of gluing, sealing with the bowl formula cambered surface 5-1；The four paws bowl formula
One end that check-valves is located at suction casing 1 is provided with spacer block 5-2.Preferably, the internal diameter of the valve seat 3 is 16mm, height 19mm, described
The bowl formula cambered surface 5-1 of four paws bowl formula check-valves a diameter of 40mm, the spacer block 5-2 are equally distributed four identical
Rubber spacer block, slip height of the four paws bowl formula check-valves in through hole are the total high 7%-14% of four paws bowl formula check-valves,
It so more can guarantee that the operating efficiency of non-return valve reaches optimal.Preferably, the nozzle air inlet pipe 7 and the jet nozzle 6
Central shaft is conllinear, to cause the gas of nozzle air inlet pipe 7 to be sprayed directly at jet nozzle 6, is preferably formed in clack box 4 low
Nip.Preferably, filter screen 2 is additionally provided with suction casing 1, the filter screen 2 is bent to positioned at the lower section of check-valves 5, the filter screen 2
For the circular arc that central angle is 90 degree, material is copper.
Preferably, the valve seat 3 is bolted to connection with the clack box 4, and its material is copper.The suction casing 1, institute
The material for stating clack box 4 is HT200.
The operation principle of non-return valve of the present invention is：Before pump start-up operation, air, four paws bowl formula are full of in suction casing 1
Check-valves is air about 5, is atmospheric pressure, and due to self gravitation effect, four paws bowl formula check-valves 5 is embedded in valve seat 3, and four
Pawl bowl formula check-valves 5 is in sealing state, and whole non-return valve is closed；When pump brings into operation, because the right-hand member of clack box 4 is equipped with jet
Nozzle 6, novel jet flow nozzle logical 6 are connected with air compressor press by nozzle air inlet pipe 7, compressed caused by air compressor
Air produces jet after entering jet nozzle 6 so that pressure drastically reduces at nozzle volume suction inlet 8, the top of four paws bowl formula check-valves 5
Space gradually produces negative pressure, and bottom is atmospheric pressure, due to differential pressure action, when pressure difference pressure is more than four paws bowl formula check-valves 5 certainly
During body gravity, four paws bowl formula check-valves 5 is opened by upward top, and air is drawn into clack box 4 and arranged by jet nozzle in suction casing 1
Go out, pump intracavity gas are constantly rolled up inspiration incidence flow nozzle, and are together discharged with compressed air by the gas discharge outlet of nozzle.By
Four identical rubber spacer blocks are uniformly distributed in the lower end of four paws bowl formula check-valves 5, four paws bowl formula check-valves 5 will not be inhaled in the lump
Walk.After pump intracavity gas are fully drained from suction casing 1, liquid medium is full of suction casing 1, there is no air in suction casing 1,
Inside will produce negative pressure, and pressure is less than pressure in clack box 4, and due to differential pressure action, four paws bowl formula check-valves 5 is depressed downwardly, and four
Pawl bowl formula check-valves 5 is sealed, and non-return valve is closed, and pump starts normal work, because suction casing is always maintained at being full of in the course of work
Liquid condition, i.e. negative pressure state, so four paws bowl formula check-valves 5 will seal always, non-return valve is constantly in closed mode, work
Medium will not be inhaled into clack box 4 by four paws bowl formula check-valves 5, do not interfere with the normal work of pump.
Claims (8)
1. a kind of non-return valve of big-flow self-priming centrifugal pump self-suction system, it is characterised in that including suction casing (1), the suction
Clack box (4) is installed in section (1), is provided with valve seat (3) between the clack box (4) and the suction casing (1), on the valve seat (3)
Provided with through hole, the through hole connects the clack box (4) with the suction casing (1)；Check-valves (5) is arranged in the through hole,
The check-valves (5) is connected with the through hole sliding pair；Nozzle air inlet pipe (7) and jet nozzle are installed on the clack box (4)
(6)；Valve seat cambered surface (3-1) is surrounded by positioned at the through hole on the valve seat (3), the check-valves (5) is four paws bowl formula
Check-valves, one end that the four paws bowl formula check-valves is located at clack box (4) are provided with bowl formula cambered surface (5-1), the valve seat cambered surface (3-1)
Being capable of gluing, sealing with the bowl formula cambered surface (5-1)；One end that the four paws bowl formula check-valves is located at suction casing (1) is provided with spacer block
(5-2)；The central shaft of the nozzle air inlet pipe (7) and the jet nozzle (6) is conllinear.
A kind of 2. non-return valve of big-flow self-priming centrifugal pump self-suction system according to claims 1, it is characterised in that institute
A diameter of 40mm of the bowl formula cambered surface (5-1) of four paws bowl formula check-valves is stated, the spacer block (5-2) is equally distributed four complete
Identical rubber spacer block.
A kind of 3. non-return valve of big-flow self-priming centrifugal pump self-suction system according to claims 2, it is characterised in that institute
Slip height of the four paws bowl formula check-valves in through hole is stated as the total high 7%-14% of four paws bowl formula check-valves.
4. the non-return valve of a kind of big-flow self-priming centrifugal pump self-suction system according to claims 1, it is characterised in that inhale
Enter and filter screen (2) is additionally provided with section (1), the filter screen (2) is located at below the check-valves (5).
5. the non-return valve of a kind of big-flow self-priming centrifugal pump self-suction system according to claim 4, it is characterised in that described
Filter screen (2) is bent to the circular arc that central angle is 90 degree, and material is copper.
A kind of 6. non-return valve of big-flow self-priming centrifugal pump self-suction system according to claims 1, it is characterised in that institute
Valve seat (3) is stated to be bolted to connection with the clack box (4).
A kind of 7. non-return valve of big-flow self-priming centrifugal pump self-suction system according to claims 1, it is characterised in that institute
The internal diameter for stating valve seat (3) is 16mm, and height 19mm, its material is copper.
A kind of 8. non-return valve of big-flow self-priming centrifugal pump self-suction system according to claims 1, it is characterised in that institute
Suction casing (1) is stated, the material of the clack box (4) is HT200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797975.6A CN105298857B (en) | 2015-11-19 | 2015-11-19 | A kind of non-return valve of big-flow self-priming centrifugal pump self-suction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510797975.6A CN105298857B (en) | 2015-11-19 | 2015-11-19 | A kind of non-return valve of big-flow self-priming centrifugal pump self-suction system |
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| Publication Number | Publication Date |
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| CN105298857A CN105298857A (en) | 2016-02-03 |
| CN105298857B true CN105298857B (en) | 2017-12-05 |
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| CN201510797975.6A Active CN105298857B (en) | 2015-11-19 | 2015-11-19 | A kind of non-return valve of big-flow self-priming centrifugal pump self-suction system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762686A (en) * | 2016-12-14 | 2017-05-31 | 江苏大学 | A kind of automatic clutch device for being applied to self-priming sprinkling irrigation pump assembly |
| CN107061301A (en) * | 2017-05-22 | 2017-08-18 | 福建省农业机械化研究所(福建省机械科学研究院） | A kind of big-flow self-priming sprinkling irrigation pump of external fluidic device |
| CN108518345A (en) * | 2018-06-08 | 2018-09-11 | 安徽阿莫斯泵业有限公司 | A kind of jet stream vacuumizes Quick water-inducing device |
| EP3850219B1 (en) * | 2018-09-12 | 2022-09-07 | Pedrollo S.p.a. | Self-priming centrifugal pump |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205260331U (en) * | 2015-11-19 | 2016-05-25 | 江苏大学 | Large -traffic self -priming centrifugal pump is from inhaling systematic check valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000274389A (en) * | 1999-03-24 | 2000-10-03 | Matsushita Electric Ind Co Ltd | Self-priming pump |
| JP2008050958A (en) * | 2006-08-23 | 2008-03-06 | Iwaki Co Ltd | Self-priming pump |
| CN101644272A (en) * | 2009-07-20 | 2010-02-10 | 江苏大学 | Fast self-priming jet-type centrifugal pump |
| CN201739209U (en) * | 2010-01-05 | 2011-02-09 | 王小雨 | Submersible pump energy saving and protection and pump pipe protection device |
| CN103883766B (en) * | 2014-03-11 | 2017-01-18 | 江苏大学 | Check valve for self-priming system |
| CN104819157B (en) * | 2015-04-21 | 2017-09-26 | 江苏大学 | A kind of self priming centrifugal pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205260331U (en) * | 2015-11-19 | 2016-05-25 | 江苏大学 | Large -traffic self -priming centrifugal pump is from inhaling systematic check valve |
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Inventor after: Chang Hao Inventor after: Shi Weidong Inventor after: Liu Jianrui Inventor after: Liu Bowen Inventor after: Gao Zhenjun Inventor after: Wu Yongsheng Inventor after: Li Xiaowei Inventor before: Chang Hao Inventor before: Liu Jianrui Inventor before: Liu Bowen Inventor before: Gao Zhenjun Inventor before: Wu Yongsheng Inventor before: Li Xiaowei |
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