CN203500104U - Small-flow-rate high-lift self-priming pump - Google Patents
Small-flow-rate high-lift self-priming pump Download PDFInfo
- Publication number
- CN203500104U CN203500104U CN201320555724.3U CN201320555724U CN203500104U CN 203500104 U CN203500104 U CN 203500104U CN 201320555724 U CN201320555724 U CN 201320555724U CN 203500104 U CN203500104 U CN 203500104U
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- pump body
- impeller
- pump
- stage
- output shaft
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Abstract
The utility model relates to a small-flow-rate high-lift self-priming pump. The small-flow-rate high-lift self-priming pump comprises a bearing box and a primary pump body, wherein 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 stretches into the pump chamber of the primary pump body, the end of the output shaft is provided with a primary impeller, an output shaft which is arranged in a pump chamber of the secondary pump body is provided with a secondary impeller, the secondary pump body is provided with a water inlet pore and a water outlet pore, the water outlet of the primary pump body corresponds to the water outlet pore of the secondary pump body and is arranged in the diameter direction of the secondary impeller, the working surface of the primary impeller is opposite to that of the secondary impeller, and the working surface of the secondary impeller faces one side of the water inlet pore. The working surfaces of the primary impeller and the secondary impeller are arranged on the output shaft in an opposite manner, so that the axial force of the output shaft is balanced, the leakage of an impeller ring of the pump can be reduced, and the mechanical wind pressure is also reduced. By reducing the leakage of the impeller ring of the pump, the self-priming capacity of the pump can be enhanced.
Description
Technical field
The utility model 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 is higher, China National Petroleum Corporation (CNPC) is explicit order forbidding.
Model utility content
The technical problems to be solved in the utility model 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 utility model solves the technological scheme that its technical problem adopts: 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 beneficial effects of the utility model are: 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 accompanying drawing, the utility model is further illustrated.
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
By reference to the accompanying drawings the utility model is further described now.The schematic diagram that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.
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 utility model, 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 utility model 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 utility model of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this model utility technological thought, carry out various change and modification completely.The technical scope of this model utility 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 |
|---|---|---|---|
| CN201320555724.3U CN203500104U (en) | 2013-09-06 | 2013-09-06 | Small-flow-rate high-lift self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320555724.3U CN203500104U (en) | 2013-09-06 | 2013-09-06 | Small-flow-rate high-lift self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203500104U true CN203500104U (en) | 2014-03-26 |
Family
ID=50331086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320555724.3U Expired - Fee Related CN203500104U (en) | 2013-09-06 | 2013-09-06 | Small-flow-rate high-lift self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203500104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678056A (en) * | 2017-02-27 | 2017-05-17 | 浙江工业大学 | Universal centrifugal pump wear ring test bed |
-
2013
- 2013-09-06 CN CN201320555724.3U patent/CN203500104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678056A (en) * | 2017-02-27 | 2017-05-17 | 浙江工业大学 | Universal centrifugal pump wear ring test bed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20150906 |
|
| EXPY | Termination of patent right or utility model |