CN103511290A - Small-flow high-lift self-priming pump - Google Patents
Small-flow high-lift self-priming pump Download PDFInfo
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- CN103511290A CN103511290A CN201310409061.9A CN201310409061A CN103511290A CN 103511290 A CN103511290 A CN 103511290A CN 201310409061 A CN201310409061 A CN 201310409061A CN 103511290 A CN103511290 A CN 103511290A
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Abstract
The invention relates to a small-flow high-lift self-priming pump which comprises a bearing box and a primary pump body. The primary pump body is provided with a water inlet and a water outlet. A secondary pump body is arranged in a pump chamber of the primary pump body. The front end of an output shaft in the bearing box extends into the pump chamber of the primary pump body, wherein a primary impeller is arranged at the tip of the output shaft. A secondary impeller is arranged on the portion, located in a pump chamber of the secondary pump body, of the output shaft. The secondary pump body is provided with a water inlet hole and a water outlet hole. The water outlet of the primary pump body is opposite to the water outlet hole of the secondary pump body in position and located in the diameter direction of the secondary impeller. The working face of the primary impeller and the working face of the secondary impeller are arranged in reverse directions, and the working face of the secondary impeller faces towards the side where the water inlet hole is formed. Since the working face of the primary impeller and the working face of the secondary impeller are oppositely arranged on the output shaft, the axial force of the output shaft is balanced, impeller ring leakage of the pump is reduced, and mechanical seal pressure is reduced. Since impeller ring leakage of the pump is reduced, the self-priming capacity of the pump is improved.
Description
Technical field
The present invention relates to a kind of low-flow high-lift self-priming pump.
Background technique
At present, domestic small flow, high-lift self-priming pump are blank always.Now a lot of oil, chemical enterprise have such operating mode: need to, by a small amount of medium, be transported in the pipeline or container of elevated pressures; Require this pump to meet the following conditions: small flow, high-lift, possess self-absorption function.
Situation and the shortcoming of the pump now just using: one, single stage centrifugal pump adds gas-liquid separation chamber: the also frequent off-axis that this pump radial force is large, self-priming performance is poor, efficiency is low, have; Two, multistage centrifugal pump adds gas-liquid separation chamber: if this pump adopts Balance disc balancing axial thrust, can greatly affect suction lift, not adopt Balance disc,, axial force is too large, easily alters axle.Rate of fault is high; Three, adopt multistage long shaft submerged pump: this pump is under liquid, and rate of fault Geng Gao， China National Petroleum Corporation (CNPC) is explicit order forbidding.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of low-flow high-lift self-priming pump is provided, the choma that has reduced pump leaks, and has promoted the suction capacity of pump.
The technical solution adopted for the present invention to solve the technical problems is: a kind of low-flow high-lift self-priming pump, the first-stage pump body that comprises bearing housing and be arranged on bearing housing front end, in first-stage pump body, be provided with water intake and water outlet, in the pump chamber of first-stage pump body, be provided with second-stage pump body, output shaft front end in described bearing housing stretches into the water inlet as for first-stage pump body in the pump chamber of first-stage pump body and through second-stage pump body, on the termination of described output shaft, be provided with one-level impeller, be arranged on the output shaft of pump chamber of second-stage pump body and be provided with sencond stage impeller, in second-stage pump body, offer water inlet and osculum, the osculum position of the water outlet of described first-stage pump body and second-stage pump body is relative and be positioned in the diametric(al) of sencond stage impeller, described one-level impeller and the working surface of sencond stage impeller are reverse setting, the working surface of sencond stage impeller is one side towards water inlet.
Further, the water inlet of described second-stage pump body is arranged at the nearly output shaft of the ear end face place of second-stage pump body.
The invention has the beneficial effects as follows: one-level impeller and sencond stage impeller working surface are arranged on output shaft on the contrary, balance the axial force of output shaft, reduced again the choma of pump and revealed, reduced the pressure of mechanical seal.By having reduced the choma of pump, leak, just promoted the suction capacity of pump.
Through overtesting, we realize, the suction lift of this pump has improved 2 meters than the suction lift of original pump.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of self-priming pump;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Fig. 3 is the structural representation of centrifugal pump.
Wherein: 1, bearing housing, 2, first-stage pump body, 3, second-stage pump body, 4, one-level impeller, 5, sencond stage impeller, 6, water intake, 7, water outlet, 8, water inlet, 9, osculum.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Fig. 1 Fig. 2, a kind of low-flow high-lift self-priming pump, the first-stage pump body 2 that comprises base and be arranged on bearing housing 1, the motor on base and be arranged on bearing housing 1 front end, the rotating shaft of motor and bearing housing 1 are in transmission connection, and the output shaft of bearing housing 1 stretches into first-stage pump body 2.
In first-stage pump body 2, be provided with water intake 6 and water outlet 7, in the pump chamber of first-stage pump body 2, be provided with second-stage pump body 3, output shaft front end in bearing housing 1 stretches into water intake 6 places as for first-stage pump body 2 in the pump chamber of first-stage pump body 2 and through second-stage pump body 3, on the termination of output shaft, be provided with one-level impeller 4, be arranged on the output shaft of pump chamber of second-stage pump body 3 and be provided with sencond stage impeller 5, in second-stage pump body 3, offer water inlet 8 and osculum 9, osculum 9 positions of the water outlet 7 of first-stage pump body 2 and second-stage pump body 3 are relative and be positioned in the diametric(al) of sencond stage impeller 5, the working surface of one-level impeller 4 and sencond stage impeller 5 is reverse setting, the working surface of sencond stage impeller 5 is 8 one sides towards water inlet.The water inlet 8 of second-stage pump body 3 is arranged at the nearly output shaft of the ear end face place of second-stage pump body 3.
When self-priming pump is started working, water enters from water intake 6, first impact on one-level impeller 4, by the rotation of one-level impeller 4, slowed down the impact of current, then water slowly flows into the inner chamber of second-stage pump body 3 from the water inlet 8 of second-stage pump body 3, because current are through one-level impeller 4 bufferings, therefore the rotation of the sencond stage impeller 5 in second-stage pump body 3, when again water being thrown away, there is higher lift, self-suction is larger, the nearly output shaft of the ear end face place that water hole 8 is arranged to second-stage pump body 3 is also in order to reduce the impact of current to sencond stage impeller 5, due to osculum 9, water outlet 7 and sencond stage impeller 5 are on same straight line, therefore when throwing away, Jiang Shui can reduce resistance, suction capacity is higher.
The working surface of one-level impeller 4 and sencond stage impeller 5 is arranged on output shaft on the contrary, so output shaft can balancing axial thrust when driving one-level impeller 4 and sencond stage impeller 5 rotations.Adopt technical conceive of the present invention, the quantity of impeller can adopt 4,6,8,10 and 12, by multi-disc impeller, slows down the current in pump chamber, and technical conceive of the present invention can be used on self-priming pump, also can use on centrifugal pump.As shown in Figure 3, be the structural representation of centrifugal pump.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to claim scope.
Claims (2)
1. a low-flow high-lift self-priming pump, it is characterized in that: the first-stage pump body (2) that comprises bearing housing (1) and be arranged on bearing housing (1) front end, in first-stage pump body (2), be provided with water intake (6) and water outlet (7), in the pump chamber of first-stage pump body (2), be provided with second-stage pump body (3), output shaft front end in described bearing housing (1) stretches in the pump chamber of first-stage pump body (2) and locates as for the water intake (6) of first-stage pump body (2) through second-stage pump body (3), on the termination of described output shaft, be provided with one-level impeller (4), be arranged on the output shaft of pump chamber of second-stage pump body (3) and be provided with sencond stage impeller (5), in second-stage pump body (3), offer water inlet (8) and osculum (9), osculum (9) position of the water outlet (7) of described first-stage pump body (2) and second-stage pump body (3) is relative and be positioned in the diametric(al) of sencond stage impeller (5), described one-level impeller (4) and the working surface of sencond stage impeller (5) are reverse setting, the working surface of sencond stage impeller (5) is (8) one sides towards water inlet.
2. a kind of low-flow high-lift self-priming pump according to claim 1, is characterized in that: the water inlet (8) of described second-stage pump body (3) is arranged at the nearly output shaft of the ear end face place of second-stage pump body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310409061.9A CN103511290A (en) | 2013-09-06 | 2013-09-06 | Small-flow high-lift self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310409061.9A CN103511290A (en) | 2013-09-06 | 2013-09-06 | Small-flow high-lift self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103511290A true CN103511290A (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310409061.9A Pending CN103511290A (en) | 2013-09-06 | 2013-09-06 | Small-flow high-lift self-priming pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN103511290A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2034489A1 (en) * | 1970-07-11 | 1972-01-13 | Allweiler Ag | Two-stage centrifugal pump |
| DE19543916A1 (en) * | 1994-11-28 | 1996-05-30 | Haeny & Cie Ag | Centrifugal pump for waste water contg. solids |
| CN101338758A (en) * | 2008-08-08 | 2009-01-07 | 刘永付 | Two stage self priming pump |
| CN201236807Y (en) * | 2008-06-27 | 2009-05-13 | 江苏双达泵阀集团有限公司 | Vertical self-suction pump |
| CN202991518U (en) * | 2012-09-13 | 2013-06-12 | 芜湖长江泵业有限公司 | Horizontal-type self-absorbing pump |
-
2013
- 2013-09-06 CN CN201310409061.9A patent/CN103511290A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2034489A1 (en) * | 1970-07-11 | 1972-01-13 | Allweiler Ag | Two-stage centrifugal pump |
| DE19543916A1 (en) * | 1994-11-28 | 1996-05-30 | Haeny & Cie Ag | Centrifugal pump for waste water contg. solids |
| CN201236807Y (en) * | 2008-06-27 | 2009-05-13 | 江苏双达泵阀集团有限公司 | Vertical self-suction pump |
| CN101338758A (en) * | 2008-08-08 | 2009-01-07 | 刘永付 | Two stage self priming pump |
| CN202991518U (en) * | 2012-09-13 | 2013-06-12 | 芜湖长江泵业有限公司 | Horizontal-type self-absorbing pump |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |