CN202100480U - Double-suction high-pressure self-sealing multistage centrifugal pump - Google Patents
Double-suction high-pressure self-sealing multistage centrifugal pump Download PDFInfo
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- CN202100480U CN202100480U CN201120211046XU CN201120211046U CN202100480U CN 202100480 U CN202100480 U CN 202100480U CN 201120211046X U CN201120211046X U CN 201120211046XU CN 201120211046 U CN201120211046 U CN 201120211046U CN 202100480 U CN202100480 U CN 202100480U
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- centrifugal pump
- multistage centrifugal
- multistage
- water
- impeller
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Abstract
The utility model discloses a double-suction high-pressure self-sealing multistage centrifugal pump, which comprises a coupler, a rotor component and a shaft. Multistage positive-rotation blades and multistage reverse-rotation blades are symmetrically distributed on a shaft of the multistage centrifugal pump, a high-pressure water outlet section shaft end of the multistage centrifugal pump is sealed by a gap of a balancing sleeve and a gap of a balancing shaft sleeve which are mutually communicated with each other, two water inlets are respectively arranged at two ends of the multistage centrifugal pump, and a water outlet is disposed in the middle of the multistage centrifugal pump. Water is sucked at two ends of the multistage centrifugal pump, water is discharged from the middle of the centrifugal pump, the blades are symmetrically arranged, leakage of high-pressure water in gaps of two ends of the balancing sleeve and two ends of the balancing shaft sleeve are balanced with each other, and leakage can be completely avoided. In addition, when the height of drainage water is high and the number of stages of the pump is large, the multistage centrifugal pump can be disassembled from transitional subs, and the centrifugal pump is transported and installed conveniently in an underground environment.
Description
Technical field
But the utility model relates to a kind of double suction high pressure selfsealings multistage centrifugal pump of automatically balancing axial force, belongs to the water supply and sewage equipment technical field.
Background technique
The water pump kind is a lot, field such as be widely used in mine, engineering, high-floor feedwater and provide rescue and relief for disasters and emergencies.In all kinds of pumps, the multistage centrifugal pump use amount is big, scope is wide.In the present real work, the multistage centrifugal pump of use is a suction port.This pump mainly is to lean on the axial clearance of adjustment dish interior edge face to come balanced action in epitrochanterian axial force.Balance disc produces pressure reduction work by leaking, and the leakage rate of multistage centrifugal pump Balance disc is about 2%～8% of rated flow, on average is about 5%, and so big leakage rate has caused the reduction of pump efficiency and the waste of energy.Impeller is arranged symmetrically in the multistage centrifugal pump and seldom uses, and mainly is because the bad solution of water outlet axle head high pressure sealing problem.As adopt high-pressure mechanical seal, and air horsepower increases, and pump efficiency reduces.Mechanical seal is easy to wear in addition, and working life is short, is difficult for long-time running and uses.
Summary of the invention
The utility model technical problem to be solved is the difficult problem of symmetric arrangement multistage centrifugal pump water outlet axle head high pressure sealing.
In order to solve the problems of the technologies described above; The utility model provides a kind of double suction high pressure selfsealings multistage centrifugal pump; This multistage centrifugal pump comprises coupling, rotor part and axle, and the axle of said multistage centrifugal pump is gone up multistage impeller and the counterrotating impeller of being rotated in the forward that be symmetrically distributed, and the high pressure water exit end axle head of this multistage centrifugal pump is the gap intercommunication sealing by a balance set and a balance sleeve; Respectively there is a water intake at the two ends of said multistage centrifugal pump, and there is a water outlet at the middle part of said multistage centrifugal pump.
Further, middle part water exit end one side of said multistage centrifugal pump is connected through a transition pipe nipple with being rotated in the forward between impeller section or the counterrotating impeller section.
Further, described multistage centrifugal pump shaft is made up of front axle and rear axle, and this front axle is connected by a twin shaft coupling band with rear axle, the connecting part of said transition pipe nipple sealing front axle and rear axle.
As a kind of preferred version, a gland is arranged on the said transition pipe nipple.
As a kind of preferred version, said multistage centrifugal pump is dragged by one or two motors.
The beneficial effect of the utility model is:
1, the utility model pump two ends suction, middle water outlet, the impeller symmetric arrangement, water exit end balance set, the mutual balance of balance sleeve two ends high pressure water clearance leakage can be avoided leaking fully.In addition, when draining was highly high, the pump stage number was many, can take apart from transition pipe nipple, was convenient to the down-hole transportation, installed.But moreover both separate unit motor driving of this pump, again can two motor driving, can well solve dynamical problem.
2, the utility model multistage centrifugal pump is when work, and the motor drives rotor rotates, and flow is got into by pump two ends inlet segment respectively, pressurizes step by step through positive impeller, anti-impeller, discharges through middle water exit end.The impeller of symmetric arrangement height nip two ends, the axial force balance of cancelling out each other, water exit end balance set, the mutual balance of balance sleeve two ends high pressure clearance leakage.Instantaneous axial force and the residual axial force that produces because of machining error are born by the bearing part angular contact ball bearing during pump variable parameter operation.
3, the utility model has thoroughly solved high-pressure shaft splaying leakage problem and various faults such as has killed because of the lost efficacy wearing and tearing cause Balance disc and balance plate or rotor of Equilibrator, improved greatly pump efficient, prolong working life of pump.
4, the utility model also is particularly suitable for installing and using of newly-built pump house; Because this pump impeller symmetric arrangement, the former pump duty of flow-rate ratio is twice, and lift is identical with former layout; Thereby greatly reduce the building area or the chamber driving amount of pump house; Reduce user's fund input, reduced cost, improved benefit.
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of the utility model multistage centrifugal pump;
Fig. 2 is the structural representation of the utility model multistage centrifugal pump band transition pipe nipple.
The reference character note:
1, coupling, 2, rotor part, 3, the fore bearing body, 4, water intake a, 5, turnbuckle, 6, the stage casing; 7, positive impeller, 8, the guide vane wheel, 9, axle, 10, balance set, 11, balance sleeve, 12, water outlet; 13, anti-impeller, 14, anti-ballistic impeller, 15, water intake b, 16, the rear bearing body, 17, roller bearing, 18, angular contact ball bearing; 19, rear axle, 20, transition pipe nipple, 21, gland, 22, the back turnbuckle, 23, preceding turnbuckle, 24, front axle.
Embodiment
As shown in Figure 1; The double suction high pressure selfsealings multistage centrifugal pump that the utility model provides is made up of coupling 1, rotor part 2, fore bearing body 3, water intake a4, turnbuckle 5, stage casing 6, positive impeller 7, guide vane wheel 8, axle 9, balance set 10, balance sleeve 11, water outlet 12, anti-impeller 13, anti-ballistic impeller 14, water intake b15 and rear bearing body 16; Multistage impeller and the counterrotating impeller of being rotated in the forward is symmetrically distributed on the axle 9 of said multistage centrifugal pump; The high pressure water exit end axle head of this multistage centrifugal pump is the gap intercommunication sealing by a balance set 10 and a balance sleeve 11; The two ends of said multistage centrifugal pump have a water intake a4 and a water intake b15 respectively, and there is a water outlet 12 at the middle part of said multistage centrifugal pump.The described impeller that is rotated in the forward is made up of multistage positive impeller 7 and multistage guide vane wheel 8; Described counterrotating impeller is made up of with multistage anti-ballistic impeller 14 multistage anti-impeller 13.Said rear bearing body 16 is to be made up of a roller bearing 17 and an angular contact ball bearing 18.This double suction high pressure selfsealings multistage centrifugal pump can be dragged by a motor, also can be dragged simultaneously by two motors.
As shown in Figure 2, when centrifugal pump progression was high, for the ease of dismounting, middle part water exit end one side of the utility model multistage centrifugal pump was connected through a transition pipe nipple 20 with being rotated in the forward between impeller section or the counterrotating impeller section; This multistage centrifugal pump shaft 9 is made up of front axle 24 and rear axle 19, and this front axle 24 is connected by a twin shaft coupling band with rear axle 19, the connecting part of said transition pipe nipple 20 sealing front axles and rear axle.A gland 21 is arranged on the said transition pipe nipple.In use, water exit end is twisted with the stud bolt that transition pipe nipple 20 connects, after opening gland 21 and taking out connecting pins, pump just can be taken apart from short 20 joints of transition, is convenient to the down-hole transportation, installs.
The working principle of the utility model multistage centrifugal pump is described below:
The utility model centrifugal pump is when work; Motor drives the rotor rotation through coupling, and water gets into pump working chamber from water intake a4, water intake b15 respectively, does work through impeller; Its energy is increased, import the place that water outlet 12 is transported to the eminence of requirement or requires pressure.This pump at work, the impeller of symmetric arrangement height nip two ends on the rotor part 2, axial force is cancelled out each other, water exit end balance set 10, the mutual balance of balance sleeve 11 two ends high pressure clearance leakages, thus make epitrochanterian axial force be able to balance.Instantaneous axial force and the residual axial force that produces because of machining error when the bearing part angular contact ball bearing can also the bearing pump variable parameter operation.
The utility model protection domain is not limited to the foregoing description, everyly does conspicuous technology distortion according to the utility model know-why, all falls within the protection domain of the utility model.
Claims (5)
1. double suction high pressure selfsealings multistage centrifugal pump; This multistage centrifugal pump comprises coupling, rotor part and axle; It is characterized in that the axle of said multistage centrifugal pump is gone up multistage impeller and the counterrotating impeller of being rotated in the forward that be symmetrically distributed, the high pressure water exit end axle head of this multistage centrifugal pump is the gap intercommunication sealing by a balance set and a balance sleeve; Respectively there is a water intake at the two ends of said multistage centrifugal pump, and there is a water outlet at the middle part of said multistage centrifugal pump.
2. double suction high pressure selfsealings multistage centrifugal pump according to claim 1 is characterized in that, middle part water exit end one side of said multistage centrifugal pump is connected through a transition pipe nipple with being rotated in the forward between impeller section or the counterrotating impeller section.
3. double suction high pressure selfsealings multistage centrifugal pump according to claim 2; It is characterized in that; Described multistage centrifugal pump shaft is made up of front axle and rear axle, and this front axle is connected by a twin shaft coupling band with rear axle, the connecting part of said transition pipe nipple sealing front axle and rear axle.
4. double suction high pressure selfsealings multistage centrifugal pump according to claim 2 is characterized in that a gland is arranged on the said transition pipe nipple.
5. according to said each double suction high pressure selfsealings multistage centrifugal pump of claim 1 to 4, it is characterized in that said multistage centrifugal pump is dragged by one or two motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120211046XU CN202100480U (en) | 2011-06-22 | 2011-06-22 | Double-suction high-pressure self-sealing multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120211046XU CN202100480U (en) | 2011-06-22 | 2011-06-22 | Double-suction high-pressure self-sealing multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100480U true CN202100480U (en) | 2012-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120211046XU Expired - Fee Related CN202100480U (en) | 2011-06-22 | 2011-06-22 | Double-suction high-pressure self-sealing multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100480U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837806A (en) * | 2017-02-10 | 2017-06-13 | 长沙佳能通用泵业有限公司 | A kind of sectional type parallel connection multistage pump |
| CN107218248A (en) * | 2017-08-08 | 2017-09-29 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of high pressure urea metro-methylamine pump rotor structure |
| CN110966207A (en) * | 2019-12-31 | 2020-04-07 | 郭学文 | Complete balance energy-saving multistage centrifugal pump |
-
2011
- 2011-06-22 CN CN201120211046XU patent/CN202100480U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837806A (en) * | 2017-02-10 | 2017-06-13 | 长沙佳能通用泵业有限公司 | A kind of sectional type parallel connection multistage pump |
| CN107218248A (en) * | 2017-08-08 | 2017-09-29 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of high pressure urea metro-methylamine pump rotor structure |
| CN110966207A (en) * | 2019-12-31 | 2020-04-07 | 郭学文 | Complete balance energy-saving multistage centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20140622 |
|
| EXPY | Termination of patent right or utility model |