CN2158459Y - Vertical self-suction centrifugal pump - Google Patents
Vertical self-suction centrifugal pump Download PDFInfo
- Publication number
- CN2158459Y CN2158459Y CN 93225784 CN93225784U CN2158459Y CN 2158459 Y CN2158459 Y CN 2158459Y CN 93225784 CN93225784 CN 93225784 CN 93225784 U CN93225784 U CN 93225784U CN 2158459 Y CN2158459 Y CN 2158459Y
- Authority
- CN
- China
- Prior art keywords
- stator
- gas
- pump
- liquid separation
- impeller
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a vertical self-suction centrifugal pump. A gas-liquid separating disk is arranged between a pump housing and an and impeller. The gas in the pump is exhausted from an exhaust port continually under the combined actions of a rotary impeller which is immersed in the liquid and the gas-liquid separating disk. The suction port of the pump lies in a negative pressure state. The liquid can be sucked in the pump automatically to start to the normal operation.
Description
The utility model relates to a kind of liquid delivery pump, particularly a kind of self-priming centrifugal liquid transfer pump.
As everyone knows, general centrifugal liquid delivery pump, when pumping liquid,, need usually in pump, to irritate liquid if when its liquid level of the liquid that is pumped is lower than the setting height(from bottom) of pump, with the gas in the blowdown pump, even bottom valve has been installed in the inlet tube of pump bottom, but since the leakage that can not keep away when starting once more after stopping, still need in pump, to irritate liquid, the ability pumping liquid is so its operation is extremely inconvenient.For this reason, some engineers and technicians have designed a kind of self priming centrifugal pump, as long as when using first, pour into small amount of liquid, pump is run well, just do not need to irritate liquid when restarting thereafter, but existing self priming centrifugal pump, for reaching the self-priming effect, have to be provided with outside the pump housing extraction sector, the self priming centrifugal pump of introducing from West Germany KSB company as China peculiar to vessel is exactly additional air exhauster outside the pump housing.Because this pump need be set up an extraction sector outside the pump housing.It has brought two big shortcomings: the pumping system floor space is bigger; The manufacture difficulty height, cost big (as introducing a self priming centrifugal pump, only air exhauster just needs 2000 marks/platform).Therefore branch of industry to be desirable to provide a kind of volume small and exquisite, the self priming centrifugal pump that compact structure is easily manufactured is to satisfy industrial demand.
The purpose of this utility model is to overcome the above-mentioned shortcoming of prior art, provides a kind of novel structure small and exquisite, and installation and processing is vertical self-priming centrifugal pump easily, can satisfy the demand of branch of industry.
Design of the present utility model is such: be provided with a gas-liquid separation dish between the pump housing and impeller, with the cooperate running of rotary blade with the gas-liquid separation dish, gas in the pump constantly discharged, make pump intake be in the negative pressure attitude, in the automatic suction pump of liquid; The level height of the import and export center line of pump should be higher than the upper surface of (or equaling at least) impeller, thereby guarantees that impeller is immersed in (during parking) in the liquid all the time.When starting first, only need in pump, to pour into small amount of liquid with the submergence impeller, just can be with the synergy of rotary blade and gas-liquid separation dish, gas is constantly discharged in pump, pump intake is in the negative pressure attitude, in the automatic suction pump of liquid, enters normal conveying running.After the parking, because the level height of the import and export center line of pump is higher than the upper surface of (or equaling at least) impeller, so impeller is immersed in the liquid all the time, so need not to irritate liquid when starting once more, just can enter normal operation.
Core of the present utility model is the setting of gas-liquid separation dish, and guarantees to have the good effect of bleeding, and illustrates content of the present utility model below in conjunction with accompanying drawing.
Fig. 1 is the said vertical self-priming centrifugal pump structural representation of the utility model
Wherein: the 1-motor, the 2-slinger ring,
The 3-stuffing box, the 4-impeller,
The 5-bearing, 6-gas-liquid separation dish,
The 7-seal ring, the 8-pump case,
P
1-fluid intake, P
2-liquid outlet.
Fig. 2 is the structural representation of gas-liquid separation dish
Wherein: Fig. 2 (a) is the worm's eye view of gas-liquid separation dish
9-is the stator that is arranged on the gas-liquid separation dish,
R-is the outer radius of impeller 4,
R
1-for the interior circle radius of gas-liquid separation dish,
R
2-for the exradius of gas-liquid separation dish,
E-is the interior circle of gas-liquid separation dish and the throw of eccentric between the cylindrical,
L
1The insied width of-stator is the chord length (abbreviation insied width) of circle intersection in stator 9 and the gas-liquid separation dish,
L
2The outer width of-stator is the chord length (be called for short outer width) of stator 9 with gas-liquid separation dish cylindrical intersection.
The Inlet cone angle of α-stator specific curves is the angle between the tangent line of tangent line round in the gas-liquid separation dish and stator specific curves.
Fig. 2 (b) is the sectional view of gas-liquid separation dish
Wherein: h is the height of stator.
As seen from Figure 1, the said vertical self-priming centrifugal pump of the present invention is mainly assembled by motor 1, bearing 5, pump case 8, gas-liquid separation dish 6 and impeller 4.The upper end of bearing 5 and motor 1 are affixed, and lower end and pump case 8 are affixed, and seal ring 7 are set to guarantee the sealing between pump case and the bearing.Gas-liquid separation dish 6 is the bell jar of an off-centre, and it is arranged in the pump case 8, and is fixed in by the leg on it on dividing plate of bearing 5.The eccentric part of gas-liquid separation dish 6 must be located near liquid outlet tube P
2A side, the outside diameter of gas-liquid separation dish 6 is than the suitable little 10-50mm of the internal diameter of pump case 8.Impeller 4 is arranged in the gas-liquid separation dish 6, and method routinely is fixed on the arbor of motor 1 with fastening piece.The optional approved product with prior art of common impeller is convenient to the utility model product like this and existing centrifugal pump product integrates with.The interior circular diameter of gas-liquid separation dish 6 is than the suitable big 1～2mm of the external diameter of impeller 4.Between the dividing plate of motor reel and bearing 5, stuffing box packing letter 3 is set, to stop the seepage of liquid along motor reel.Also be provided with the slinger ring 2 that a usefulness elastic material is made on the axle of motor, it is fastened on the motor reel with elasticity itself, and its function is to stop the small amount of liquid that leaks out from stuffing box to swash and attack motor along motor reel.Fluid intake P
1With liquid outlet P
2Center line on same horizontal plane, and be higher than the upper surface of (or equaling at least) impeller, be immersed in (during parking) in the liquid to guarantee impeller.
As seen from Figure 2, gas-liquid separation dish 6 is the bell jar of an off-centre, between its cylindrical and the interior round center certain eccentric distance e is arranged, and suitable e value is (0～0.03) R
1, R wherein
1Interior circle radius for the gas-liquid separation dish.Do not have stator 9 on the gas-liquid separation dish 6, the quantity of stator 9 is Duoed one than the stator number on the impeller at least, is 6 as the stator number of impeller, and then the stator number on the gas-liquid separation dish is at least 7.Said stator 9, its geometrical shape is by stator insied width L
1The outer width L of stator
2And two specific curves limit.Said two specific curves, its radius of curvature R
0Equal the exradius R of gas-liquid separation dish
2Interior circle radius R with the gas-liquid separator disk
1Mean value, i.e. R
0=(R
2+ R
1)/2, its Inlet cone angle α should choose in 20-40 ° of scope.The outer width L of stator
2With insied width L
1Ratio be 1.05-1.40, L
1Can in the 5-25mm scope, choose.H is the height of stator, and the high-end of it should be lower than impeller upper surface 0-5mm.
According to the content that above-mentioned design and accompanying drawing are showed, a vertical self-priming centrifugal pump of trial-production: its nominal flow rate is 20M
3/ hr, the nominal inlet diameter is 65mm, the nominal outlet diameter is 40mm, the pump case external diameter is that 250mm, internal diameter are 237mm, the external diameter of gas-liquid separation dish is that 212mm, internal diameter are 202mm, eccentric distance e=2.5mm, impeller diameter is that the stator of 200mm, impeller is several 6, and the stator number of gas-liquid separation dish is 7, the radius of curvature of the specific curves of stator is 103.5mm, Inlet cone angle α=25 °, the width L of stator
1The outer width L of=10mm, stator
2=12mm through actual measurement, can get pump curve: i.e. the flow Q of pump and lift H curve, flow Q and efficiency eta curve, flow Q and power N curve, and when the efficiency eta of pump reaches 54%, lift of pump H=37mm, flow Q=23.4M
3/ hr, power consumption N=4.35KW have reached the level of conventional liq transfer pump, as the further manufacturing process of improving, then are expected to obtain higher pump efficiency.
Claims (3)
1, a kind of vertical self-priming centrifugal pump, mainly assemble by motor (1), bearing (5), pump case (8) and impeller members such as (4), of the present utility model being characterised in that: between pump case (8) and impeller (4), be provided with a gas-liquid separation dish (6), on its dividing plate by the affixed bearing of leg (5) on it.
2, self-priming centrifugal pump as claimed in claim 1 is characterized in that said gas-liquid separation dish is the bell jar of an off-centre, and the throw of eccentric between its cylindrical and the interior circle is e, and the e value is (0-0.03) R
1, R
1Be the interior circle radius of gas separation dish, gas-liquid separation dish (6) is provided with stator (9), and the quantity of stator (9) is Duoed one than the stator number on the impeller (4) at least;
3, self-priming centrifugal pump as claimed in claim 2, the geometrical shape that it is characterized in that said stator (9) is by stator insied width L
1, the outer width L of stator
2And two specific curves limit the radius of curvature R of two specific curves
0=(R
1+ R
2)/2, wherein R
2Be the exradius of gas-liquid separation dish, the Inlet cone angle α of stator specific curves=20-40 °, the outer width L of stator
2With stator insied width L
1Ratio be 1.05-1.40, wherein L
1In the 5-25mm scope, choose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93225784 CN2158459Y (en) | 1993-05-31 | 1993-05-31 | Vertical self-suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93225784 CN2158459Y (en) | 1993-05-31 | 1993-05-31 | Vertical self-suction centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2158459Y true CN2158459Y (en) | 1994-03-09 |
Family
ID=33803512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93225784 Expired - Fee Related CN2158459Y (en) | 1993-05-31 | 1993-05-31 | Vertical self-suction centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2158459Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458347A (en) * | 2018-10-30 | 2019-03-12 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump |
-
1993
- 1993-05-31 CN CN 93225784 patent/CN2158459Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458347A (en) * | 2018-10-30 | 2019-03-12 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |