CN2066517U - External mixture type double-step self-sucking centrifugal pump - Google Patents
External mixture type double-step self-sucking centrifugal pump Download PDFInfo
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- CN2066517U CN2066517U CN 90200282 CN90200282U CN2066517U CN 2066517 U CN2066517 U CN 2066517U CN 90200282 CN90200282 CN 90200282 CN 90200282 U CN90200282 U CN 90200282U CN 2066517 U CN2066517 U CN 2066517U
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Abstract
The patent of the utility model relates to an external mixture type double-step self-sucking centrifugal pump which utilizes the structures of two centrifugal working impellers, two corresponding whorl-body channels, two separating tongues, a water-pressing chamber pervasion tube, a gas-liquid separating chamber, a circumfluence hole, a water storage chamber, etc to finish the self-sucking function. The utility model solves the difficult problems that a double-step impeller in a pump body completes the separation of gas and liquid and the delivery lift of a single-step self-sucking pump can not be higher, and furthermore the utility model has the advantages of simple and compact structure, good self-sucking function, small volume, convenient maintenance, stable running, etc.
Description
The utility model patent relates to a kind of external mixture type twin-stage self-priming centrifugal pump
Generally, Ordinary Centrifugal Pumps realizes that the mode of self-priming has two classes: a class is to wear a self-priming apparatus to centrifugal pump, commonly dress liquid-ring vacuum wheel, vortex wheel or fluidic device etc. on centrifugal pump.Such pump structure complexity, the cost height; Another kind of centrifugal pump body is transformed,, made it to become self priming centrifugal pump by the effect of centrifugal impeller generation self-priming itself.Such pump is by self priming centrifugal pump principle branch: two kinds of external mixture type and internal-mixings are arranged.The external mixture type self-priming centrifugal pump is meant that carrying out gas-liquid mixed at impeller outer edge finishes self-priming; The internal-mixing self-priming centrifugal pump is meant carrying out gas-liquid mixed near the impeller inlet in whole runners of outlet finishes self-priming.Because the external mixture type self-priming centrifugal pump has compact structure than other self-priming pump, easy and simple to handle, volume is little, and is in light weight, and self-priming performance is reliable, characteristics such as efficient height.Therefore, wide popularization and application is finished the task of carrying liquid medium in occasions such as agricultural, building, chemical industry refinery, land oil depot, airport, fuel tank, naval vessels at present.
Yet taking a broad view of all external mixture type self-priming centrifugal pumps in home and abroad, all to belong to single-stage be many, and its work lift is subjected to the self priming centrifugal pump characteristics, that is: the restriction of the specific speed of pump, impeller garden circular velocity, pump shell structure and driving machine rotating speed etc. can not unconfinedly increase.End up till now, such pump is the most high-lift all less than surpassing more than 80 meter water columns, and like this, the using scope of such pump just has been subjected to great constraint.So in some required high-lift occasion, the lift of a self priming centrifugal pump can not satisfy under the actual needs prerequisite, must adopt series connection of pumps more than two or two to finish the requirement of engineering operating mode.Like this, certainty increase equipment investment at double.And at motor device (trailer pump for example, carry pump truck, refuelling truck) on, because the restriction of installation conditions, often can not realize, thereby the performance and the purposes of equipment have been limited to a great extent, developing rapidly particularly along with national defense construction, need satisfy the technical requirements that the naval vessel travels synchronously and refuels to helicopter, promptly refuel or "---sky " refuels synchronously synchronously in " sea---sky ", the performance requirement of wherein required hovering gasoline pump is that suction capacity is reliable, flow is big, lift is between the 150-170 meter water column, and maintaining is convenient.In order to address this problem, people once inquired into multistage centrifugal pump and finished this requirement, but because of multistage centrifugal pump does not have self-absorption function were negated.Also the someone proposes to use for reference external displacement pump and finishes this operating mode, but causes the fatal crass to be negated because of the displacement pump flow is too little with worry overpressure protection system down.And the domestic series/parallel self priming centrifugal pump of being invented in recent years (has two volutes, two gas-liquid separation chamber, two return ports, two liquid storage rooms, two pumping chamber diffusing tubes) and the vortex wheel that utilizes of the external Soviet Union finish the series/parallel self priming centrifugal pump of self-absorption function also all because of complex structure, bulky, position, naval vessels cabin is limited, safeguard inconvenient, use unreliable and negated, this shows, invent and develop a kind of compact structure, the self-priming multistage centrifugal pump that volume is little better solves the problem of high-lift operating mode conveying liquid difficulty and the application area of expansion self priming centrifugal pump is necessary.
The purpose of the utility model patent is exactly to propose a kind of improved high-lift external mixture type twin-stage self-priming centrifugal pump that utilizes pump itself to finish self-absorption function, satisfies the needs that some are used on the spot.
The task of the utility model patent is achieved through the following technical solutions.
The basic structure pattern of the utility model patent is that pump has two centrifugal working impellers, it and pump shaft are contained in the same housing of pump together, two centrifugal impeller is back-to-back being arranged in together, and two corresponding volute flow passages and two corresponding cut waters are arranged in the pump case of this structure.Though this structure has two centrifugal impellers.But only have a pumping chamber diffusing tube, a gas-liquid separation chamber, a return port and a liquid storage room.The pumping chamber diffusing tube of above-mentioned feature, gas-liquid separation chamber, liquid storage room and two volute flow passages have constituted the main body of pump case.The pumping chamber diffusing tube is communicated with the second level volute of pump, is positioned at pump housing top.Gas-liquid separation chamber also is positioned at the top of the pump housing.Liquid storage room is positioned at the bottom of the pump housing, and the return port design and installation is in the second volute place of the pump housing.It is positioned at 135～180 degree places of cut water top, second level starting point, and it is communicated with the liquid storage room and the volute of pump case.
Two volute flow passages in the device are positioned at the inside of pump case, relative 180 degree that stagger with the cut water starting point in the I cross section of its each volute flow passage.
The import of the straight-through pump of the import of the first order centrifugal impeller in the device, the outlet of its first order volute flow passage is inevitable to communicate with the import of second level centrifugal impeller, and the pumping chamber diffusing tube is led directly in the outlet of second level volute flow passage.
The working principle of the utility model Patent equipment is as follows:
After driving machine drives the normal startup of pump, two centrifugal impellers will run up together along with rotating shaft, because two centrifugal impellers are arranged in the same pump case that has a certain liq, so two centrifugal impellers can stir the water in the pump housing simultaneously, liquid and the air in the suction line deposited in the liquid storage room are sucked together, water and air is mixed in impeller fully, under action of centrifugal force, liquid entrainment the gas flow impeller outer edge, on the outer rim of impeller, form the pendular ring of one deck white gas-liquid mixed foam band and high speed rotating, the foam band rotates with pendular ring and impeller, when foam band and pendular ring process cut water, most of foam is scraped on the pump housing, and wherein first order centrifugal impeller is transferred to second level centrifugal impeller with the gas-liquid mixture in the suction line by runner, second level centrifugal impeller passes to pump housing top with gas-liquid mixture by the pumping chamber diffusing tube, at this moment, foam speed slows down, when foam flow during through gas-liquid separation chamber, bubble breaks, and gas is overflowed.Water after the degassing flows to the return port of bottom through pump housing volute place along volute and refluxes, and participates in taking away the effect of air again.Air in so air-breathing repeatedly again and again, the degassing, the intake line constantly reduces, and until draining till gas sucts liquid, finishes the self-priming process, makes pump drop into normal infusion work.
This external mixture type twin-stage self-priming centrifugal pump utility model patent has the following characteristics:
1, can utilize this body structure and not need additional device just can finish self-absorption function, and, quicken the gas-liquid separation process, improve self-priming and imitated efficient because the high speed rotating of two centrifugal impellers is arranged.
2, solve and broken through the boundary that present self priming centrifugal pump lift can not be too high, the application area of external mixture type self-priming centrifugal pump is enlarged.
Though 3, this device has two centrifugal working impellers, have only a gas-liquid separation chamber, a return port, a pumping chamber diffusing tube and a liquid storage room, multistage centrifugal pump and self priming centrifugal pump are organically combined cleverly be one.From outside watch, only be equivalent to a single-stage external mixture type self-priming centrifugal pump.So simple in structure, compact, volume is little, and is easy to maintenance.
4, this device has kept the advantage of centrifugal pump, and running wheel does not rub with other parts rigidity yet.So this device is safe and reliable, does not need overpressure protector, and is easy to operate, operates steadily, functional.
The explanation of accompanying drawing drawing:
The basic structure sketch of Fig. 1, the utility model patent.
Fig. 2, according to the structure diagram of the designed a kind of concrete device of the utility model patent.
The A-A pump case amplification profile of Fig. 3, Fig. 2.
The B-B pump case amplification profile of Fig. 4, Fig. 2.
The C-C pump case amplification profile of Fig. 5, Fig. 2.
1 is gas-liquid separation chamber among Fig. 1, and 2 is the pumping chamber diffusing tube, and 3 is first order volute, and 4 is first order suction chamber, and 5 is second level volute, and 6 is second level suction chamber, and 7 is liquid storage room, and 8 is return port.
A kind of concrete device shown in Figure 2.It has comprised locking nut 9, dipstick plug screw 10 bearing suppories 11, bearing 12, outside framework oil seal 13, bearing (ball) cover 14, pump case 15, secondary feed liquor device 16, mechanical sealing base 17, mechanical seal 18, second level centrifugal impeller 19, one-level feed liquor device 20, first order centrifugal impeller 21, pump shaft 22, impeller nut 23.
24 is the cut water and the position of first order volute among Fig. 3.
25 is the cut water and the position of second level volute among Fig. 4.
8 is return port and position among Fig. 5.
Claims (4)
1, it has two centrifugal working impellers external mixture type twin-stage self-priming centrifugal pump, and and pump shaft be contained in together in the same housing of pump, baffle plate by pump shell structure separates therebetween, it is characterized in that having in the pump two corresponding cut waters, a pumping chamber diffusing tube is arranged, a gas-liquid separation chamber, a return port and a liquid storage room, the pumping chamber diffusing tube, gas-liquid separation chamber, liquid storage room and two volute flow passages have constituted the main body of pump case, the pumping chamber diffusing tube is communicated with the second level volute of pump, be positioned at the top of pump case, gas-liquid separation chamber is positioned at the top of pump case, liquid storage room is positioned at the bottom of pump case, the return port design and installation is in volute place, the second level of pump case, and is positioned at 135～180 degree places of cut water top, second level starting point, the import of the straight-through pump of the import of the first order centrifugal impeller in the device, the outlet of first order volute flow passage communicates with the import of second level centrifugal impeller, and the pumping chamber diffusing tube is led directly in the outlet of second level volute flow passage.
2, external mixture type twin-stage self-priming centrifugal pump according to claim 1 is characterized in that the feature of two centrifugal impellers is arranged back-to-back.
3, external mixture type twin-stage self-priming centrifugal pump according to claim 1 is characterized in that the I cross section of each volute flow passage and relative 180 degree that stagger of starting point of cut water.
4, external mixture type twin-stage self-priming centrifugal pump according to claim 1, the position that it is characterized in that return port be in second level volute, the centrifugal impeller importer to downside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200282 CN2066517U (en) | 1989-12-27 | 1989-12-27 | External mixture type double-step self-sucking centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200282 CN2066517U (en) | 1989-12-27 | 1989-12-27 | External mixture type double-step self-sucking centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2066517U true CN2066517U (en) | 1990-11-28 |
Family
ID=4882115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90200282 Withdrawn CN2066517U (en) | 1989-12-27 | 1989-12-27 | External mixture type double-step self-sucking centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2066517U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929948A (en) * | 2015-07-07 | 2015-09-23 | 芜湖环球汽车配件有限公司 | Outer-mixing type self sucking pump |
| CN107939750A (en) * | 2017-12-26 | 2018-04-20 | 杭州大路实业有限公司 | A kind of gas-liquid delivery lifts centrifugal oil pump |
| CN112786430A (en) * | 2021-03-02 | 2021-05-11 | 丽水蓝城农科检测技术有限公司 | Mass spectrometer for measuring residual quantity of mixture in honey and using method thereof |
-
1989
- 1989-12-27 CN CN 90200282 patent/CN2066517U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929948A (en) * | 2015-07-07 | 2015-09-23 | 芜湖环球汽车配件有限公司 | Outer-mixing type self sucking pump |
| CN107939750A (en) * | 2017-12-26 | 2018-04-20 | 杭州大路实业有限公司 | A kind of gas-liquid delivery lifts centrifugal oil pump |
| CN107939750B (en) * | 2017-12-26 | 2024-02-27 | 杭州大路实业有限公司 | Gas-liquid mixed transportation lifting centrifugal oil pump |
| CN112786430A (en) * | 2021-03-02 | 2021-05-11 | 丽水蓝城农科检测技术有限公司 | Mass spectrometer for measuring residual quantity of mixture in honey and using method thereof |
| CN112786430B (en) * | 2021-03-02 | 2022-09-30 | 丽水蓝城农科检测技术有限公司 | Mass spectrometer for measuring residual quantity of mixture in honey and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |