CN203441763U - Self-suction device of multistage centrifugal pump - Google Patents
Self-suction device of multistage centrifugal pump Download PDFInfo
- Publication number
- CN203441763U CN203441763U CN201320477440.7U CN201320477440U CN203441763U CN 203441763 U CN203441763 U CN 203441763U CN 201320477440 U CN201320477440 U CN 201320477440U CN 203441763 U CN203441763 U CN 203441763U
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- China
- Prior art keywords
- self
- centrifugal pump
- multistage centrifugal
- pump
- chamber
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010992 reflux Methods 0.000 claims description 23
- 230000000694 effects Effects 0.000 abstract description 5
- 230000009466 transformation Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000004308 accommodation Effects 0.000 description 2
- 238000005213 imbibition Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model provides a self-suction device of a multistage centrifugal pump, belongs to the technical field of centrifugal pumps and solves the problems of poor self-suction capability, unstable effect and overhigh demands on transformation if a user wants to improve the self-suction capability of the existing centrifugal pump. According to the self-suction device, a backflow cavity is arranged between a water inlet passage of a pump body and an impeller cavity; the backflow cavity is respectively communicated with the lower side of the water inlet passage and the impeller cavity; an exhaust passage is connected onto the cavity wall of the backflow cavity; the exhaust passage is provided with an elastic valve. The self-suction device of the multistage centrifugal pump is simple in structure, strong in self-suction capability and wide in suitable range.
Description
Technical field
The utility model belongs to centrifugal pump technical field, refers in particular to a kind of self-priming apparatus of multistage centrifugal pump.
Background technique
The existing multistage centrifugal pump structure with self-absorption function is more traditional, so its suction capacity is poor and effect is unstable, water is needed during toward eminence pump just can pump into current for a long time, its accommodation is less, higher to user's usage requirement, can not meet the market demands such as convenient, quick obviously, the suction capacity that wants to improve existing structure is with regard to the essential machining accuracy that improves related components, to mounting process, require high, human cost and cost of material all need to be increased, and the risk of impeller clamping stagnation is very big.
Summary of the invention
The purpose of this utility model is to provide a kind of self-priming apparatus of multistage centrifugal pump, and it has increased refluxing chamber on the basis of multistage centrifugal pump, has solved conventional centrifugal pump self-priming weak effect, unstable, cannot meet the problems such as demand in market.
The purpose of this utility model is achieved in that
The self-priming apparatus of multistage centrifugal pump, it is characterized in that: be to be provided with refluxing chamber between the intake tunnel of the pump housing and impeller cavity, described refluxing chamber is communicated with respectively downside and the impeller cavity of intake tunnel, on the chamber wall of described refluxing chamber, is connected with exhaust passage, is provided with elastic valve on exhaust passage.
In the self-priming apparatus of above-mentioned multistage centrifugal pump, the concrete structure of described elastic valve is: on the chamber wall of refluxing chamber, offer through hole, the outside that is positioned at the chamber wall of through hole is fixed with spring, the outer end of spring is fixed with capping, and capping is provided with the seal ring that can be tightly connected with through hole under the suction function of water.
In the self-priming apparatus of above-mentioned multistage centrifugal pump, the pump cover arranging on the chamber wall of described refluxing chamber and impeller cavity is fixedly connected.
The utility model compared to existing technology outstanding and useful technique effect is:
Of the present utility model simple in structure, utilized current under Action of Gravity Field, to produce the phenomenon refluxing, effectively make the air exhausting light in pump, and then pumping after water pressure progressively raises, produce suction and close the valve of discharging air, water-aspirator pressure is not wasted, and this multistage centrifugal pump suction capacity is strong, wide accommodation.
Accompanying drawing explanation
Fig. 1 is structure half sectional view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the utility model is further described, referring to Fig. 1:
The self-priming apparatus of multistage centrifugal pump, be arranged in multistage centrifugal pump, multistage centrifugal pump comprises the pump housing and drive motor, the described pump housing is comprised of the intake tunnel 1 being connected, impeller cavity 2, the rotating shaft of described drive motor extends in impeller cavity and a plurality of stators and impeller is installed, between described intake tunnel and impeller cavity, be provided with refluxing chamber 3, described refluxing chamber is communicated with respectively downside and the impeller cavity of intake tunnel, on the chamber wall of described refluxing chamber, be connected with exhaust passage 4, on exhaust passage 4, be provided with elastic valve.
Above-mentioned exhaust passage is also exhalant canal, the exhalant canal setting that is connected with impeller cavity.
Working principle of the present utility model is: above-mentioned intake tunnel is vertical setting, current can not produce refluence phenomenon in eminence enters to refluxing chamber and impeller cavity, in order to solve the problem that has air in pump, because there is air in pump, can cause the suction deficiency of pump cannot effectively form spontaneous imbibition phenomena, therefore be provided with refluxing chamber, refluxing chamber is connected with exhaust passage by elastic valve, under normality, elastic valve is opened, be while there is air in pump, air and current are that exhalant canal is discharged by exhaust passage, the current that cannot pump because of underpressure are at refluxing chamber inner circulating reflux, until Bas Discharged is complete in pump, at impeller cavity, go out under the suction of water generates, elastic valve is closed, in pump, form fully effective spontaneous imbibition phenomena.
The concrete structure of described elastic valve is: on the chamber wall 13 of refluxing chamber, offer through hole 9, the outside that is positioned at the chamber wall of through hole is fixed with spring 10, the outer end of spring is fixed with capping 11, and capping is provided with the seal ring 12 that can be tightly connected with through hole under the suction function of water.
Be in operation, air in inlet ductwork enters normal operating condition after being all pulled away, because so the connected pump chamber internal pressure of pump chamber and exit of pump is identical in pump housing outlet pressure, after outlet pressure acquires a certain degree, elastic valve is closed state, and is arranged on reflux valve seal ring sealing and reaches and do not reveal, and plays the effect that pressure is not wasted, make the H-Max of this water pump higher, more stable.
The pump cover 6 arranging in the chamber wall of described refluxing chamber and impeller cavity is fixedly connected.
The concrete structure that a plurality of stators and impeller are installed in above-mentioned drive motor rotating shaft 5 is: turn the tip of the axis and be provided with pump cover 6, in rotating shaft, towards pump cover direction, be interval with successively a plurality of stators 7 and impeller 8, described stator is identical with the number of impeller and be more than or equal to two.The actual quantity of impeller and stator is determined according to actual conditions, and its erection sequence is: the electric motor end cap of self-driven motor sets gradually first order stator, first order impeller, second level stator, second level impeller also by that analogy towards pump cover.
Above-described embodiment is only preferred embodiment of the present utility model, not limits according to this protection domain of the present utility model, therefore: all equivalences of doing according to structure of the present utility model, shape, principle change, within all should being covered by protection domain of the present utility model.
Claims (3)
1. the self-priming apparatus of multistage centrifugal pump, it is characterized in that: be to be provided with refluxing chamber (3) between the intake tunnel of the pump housing and impeller cavity, described refluxing chamber is communicated with respectively downside and the impeller cavity of intake tunnel, on the chamber wall of described refluxing chamber, be connected with exhaust passage (4), exhaust passage is provided with elastic valve on (4).
2. the self-priming apparatus of multistage centrifugal pump according to claim 1, it is characterized in that: the concrete structure of described elastic valve is: on the chamber wall (13) of refluxing chamber, offer through hole (9), the outside that is positioned at the chamber wall of through hole is fixed with spring (10), the outer end of spring is fixed with capping (11), and capping is provided with the seal ring (12) that can be tightly connected with through hole under the suction function of water.
3. the self-priming apparatus of multistage centrifugal pump according to claim 2, is characterized in that: the pump cover (6) arranging on the chamber wall of described refluxing chamber and impeller cavity is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320477440.7U CN203441763U (en) | 2013-08-06 | 2013-08-06 | Self-suction device of multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320477440.7U CN203441763U (en) | 2013-08-06 | 2013-08-06 | Self-suction device of multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203441763U true CN203441763U (en) | 2014-02-19 |
Family
ID=50092822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320477440.7U Expired - Fee Related CN203441763U (en) | 2013-08-06 | 2013-08-06 | Self-suction device of multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203441763U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194840A (en) * | 2016-09-30 | 2016-12-07 | 利欧集团浙江泵业有限公司 | The runner body structure of Hua Yuanbeng |
| CN107044423A (en) * | 2017-06-26 | 2017-08-15 | 台州凌霄泵业有限公司 | Self-priming multistage peripheral pump |
| CN107448392A (en) * | 2016-05-12 | 2017-12-08 | 格兰富控股联合股份公司 | Centrifugal pump |
| CN107816437A (en) * | 2016-09-13 | 2018-03-20 | 格兰富控股联合股份公司 | Pump assembly |
-
2013
- 2013-08-06 CN CN201320477440.7U patent/CN203441763U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107448392A (en) * | 2016-05-12 | 2017-12-08 | 格兰富控股联合股份公司 | Centrifugal pump |
| CN107448392B (en) * | 2016-05-12 | 2019-06-04 | 格兰富控股联合股份公司 | Centrifugal pump |
| US11067086B2 (en) | 2016-05-12 | 2021-07-20 | Grundfos Holding A/S | Centrifugal pump |
| CN107816437A (en) * | 2016-09-13 | 2018-03-20 | 格兰富控股联合股份公司 | Pump assembly |
| CN107816437B (en) * | 2016-09-13 | 2019-10-18 | 格兰富控股联合股份公司 | Pump assembly |
| CN106194840A (en) * | 2016-09-30 | 2016-12-07 | 利欧集团浙江泵业有限公司 | The runner body structure of Hua Yuanbeng |
| CN107044423A (en) * | 2017-06-26 | 2017-08-15 | 台州凌霄泵业有限公司 | Self-priming multistage peripheral pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160405 Address after: Wenling City, the Eastern Industrial Agglomeration in Zhejiang province Taizhou city 317500 District Third Street No. 1 Patentee after: LEO GROUP ZHEJIANG PUMP INDUSTRY CO., LTD. Address before: The coastal town of Leo road in Wenling city 317500 Taizhou city in Zhejiang province No. 1 Patentee before: LEO Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20200806 |