CN203248368U - Self-exhausting centrifugal pump - Google Patents
Self-exhausting centrifugal pump Download PDFInfo
- Publication number
- CN203248368U CN203248368U CN 201320222399 CN201320222399U CN203248368U CN 203248368 U CN203248368 U CN 203248368U CN 201320222399 CN201320222399 CN 201320222399 CN 201320222399 U CN201320222399 U CN 201320222399U CN 203248368 U CN203248368 U CN 203248368U
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- Prior art keywords
- pump
- self
- exhausting
- centrifugal pump
- impeller
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- Expired - Fee Related
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Abstract
The utility model discloses a self-exhausting centrifugal pump. The self-exhausting centrifugal pump comprises a pump cover and a pump body which are connected with each other in a sealed mode. A pump shaft is arranged in the pump body, an impeller is arranged at the front end of the pump shaft, and the pump shaft is connected with a motor arranged outside the centrifugal pump. The pump body comprises a suction inlet, an exhaust port and a water diversion tongue arranged in a volute of the pump body. A self-exhausting structure is arranged on the portion, higher than the suction inlet of the pump body, of the water diversion tongue of the pump body, the self-exhausting structure is a self-exhausting hole, and the self-exhausting hole penetrates through the volute and the exhaust port. The self-exhausting centrifugal pump has the advantages that the self-exhausting hole is formed in the suction inlet position higher than the impeller of the pump body, therefore, the centrifugal pump can exhaust automatically, and compared with the prior art, the self-exhausting centrifugal pump does not need manual exhaust, is more convenient to use, and improves safety and convenience in use.
Description
Technical field
The utility model relates to a kind of pump valve structure, be specifically related to a kind of can self-purging centrifugal pump.
Background technique
Centrifugal is the performance of object inertia, and centrifugal pump is exactly around this principle to design, and the impeller blade drive water rotation of High Rotation Speed throws away water, thereby reaches the purpose of conveying.The main flow passage components of centrifugal pump have suction chamber, impeller and pumping chamber.Suction chamber is positioned at the water intake front of impeller, plays the effect of liquid being guided into impeller; Pumping chamber mainly contains spiral pressurized water chamber (scroll casing type), stator and three kinds of forms of spatial guide blade; Impeller is the most important operation element of pump, is the heart of flow passage components, and impeller is comprised of cover plate and middle blade.
Before the centrifugal pump work, liquid will be full of first in the pump, then start centrifugal pump, the impeller quick rotation, the blade of impeller orders about liquid and rotates, when rotating, liquid rely on inertia to the impeller outer edge diffluence, impeller is from suction chamber inspiration liquid simultaneously, in this course, the liquid in the impeller streams blade, and liquid effects one lift is in blade in streaming motion, conversely blade with one therewith the masterpiece of lift equal and opposite in direction, opposite direction be used for liquid, this power is done work to liquid, makes liquid obtain energy and flows out impeller, and at this moment the kinetic energy of liquid and pressure energy all increase.Centrifugal pump relies on rotary blade that the effect of liquid is passed to liquid to the mechanical energy of prime mover.Because the effect liquid of centrifugal pump flows to the process of outlet from impeller inlet, its speed energy and pressure energy are all increased, by the liquid process delivery chamber that impeller is discharged, most of speed can convert pressure energy to, then transfers out along discharge conduit, at this moment, the impeller inlet place forms vacuum or low pressure because of the discharge of liquid, and the liquid in the priming reservoir is pressed into the import of impeller under the effect of liquid level pressure (barometric pressure), so the impeller that is rotating just constantly sucks and discharges liquid continuously.
If what centrifugal pump was full of in starting fore shell is gas, can not form enough large degree of vacuum at this place when the impeller center gas is thrown after then starting, just the interior liquid of groove can not be sucted like this, this phenomenon is called air sinuses.Appearance for fear of air sinuses, the tangential outlet of traditional employing design centrifugal pump need to be provided with exhaust port at the peak at the top of pump volute, and start pump all needed manually to carry out exhaust at every turn in the past, operate so very inconvenient, also have in process of production unsafe factor.
Summary of the invention
The utility model purpose provide a kind of can self-purging centrifugal pump, by the improvement to structure, but so that the centrifugal pump automatic vent is easy to use, Security is also higher.
The technical solution of the utility model is: a kind of can self-purging centrifugal pump, comprise in the pump cover that mutually is tightly connected and the pump housing, the described pump housing and be provided with pump shaft, described pump shaft front end is provided with impeller, the described pump shaft motor outer with being located at centrifugal pump is connected, the described pump housing comprises a suction port, exhaust port, and minute overflow that is positioned at the volute of the described pump housing, the suction port that is higher than the described pump housing on minute overflow of the described pump housing is provided with from exhaust structure, described is from exhaust port from exhaust structure, describedly runs through described volute and exhaust port from exhaust port.
Preferably, described diameter from exhaust port is 6-10cm.
The utility model has the advantages that: the utility model is provided with from exhaust port by the suction port place that is higher than described impeller at the pump housing, but so that centrifugal pump automatic vent in use, need not as compared with the past manually to carry out exhaust, use more conveniently, improved simultaneously Security, convenience in using.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the utility model embodiment one structural representation.
Embodiment
Embodiment one: referring to shown in Figure 1, a kind of can self-purging centrifugal pump, comprise in the pump cover that mutually is tightly connected and the pump housing 1, the described pump housing 1 and be provided with pump shaft, described pump shaft front end is provided with impeller, the described pump shaft motor outer with being located at centrifugal pump is connected, and the described pump housing comprises a suction port 2, exhaust port 3, and minute overflow 4 that is positioned at the volute of the described pump housing, the suction port 2 that is higher than the described pump housing on minute overflow 4 of the described pump housing is provided with from exhaust structure, and described is from exhaust port 5 from exhaust structure.Describedly run through described volute and exhaust port 3 from exhaust port 5.Described is 6-10cm from exhaust port 2 diameters.
The utility model is processed according to the size of pump by the position that is higher than suction eye at the pump housing and is set out from exhaust port, the pump housing just can be realized from exhaust like this, using effect is very good, need not as compared with the past before centrifugal pump uses, manually to carry out exhaust, thereby so that centrifugal pump of the present utility model use is more convenient, and the Security in the using process also is improved.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present utility model and according to this enforcement, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the Spirit Essence of the utility model main technical schemes all should be encompassed within the protection domain of the present utility model.
Claims (2)
- One kind can self-purging centrifugal pump, comprise the pump cover and the pump housing (1) that mutually are tightly connected, the described pump housing is provided with pump shaft in (1), described pump shaft front end is provided with impeller, the described pump shaft motor outer with being located at centrifugal pump is connected, the described pump housing (1) comprises a suction port (2), exhaust port (3), and minute overflow (4) that is positioned at the volute of the described pump housing (1), it is characterized in that: the suction port (2) that is higher than the described pump housing (1) on minute overflow (4) of the described pump housing (1) is provided with from exhaust structure, described is from exhaust port (5) from exhaust structure, describedly runs through described volute and exhaust port (3) from exhaust port (5).
- According to claim 1 a kind of can self-purging centrifugal pump, it is characterized in that: described diameter from exhaust port (5) is 6-10cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222399 CN203248368U (en) | 2013-04-27 | 2013-04-27 | Self-exhausting centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320222399 CN203248368U (en) | 2013-04-27 | 2013-04-27 | Self-exhausting centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203248368U true CN203248368U (en) | 2013-10-23 |
Family
ID=49374810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320222399 Expired - Fee Related CN203248368U (en) | 2013-04-27 | 2013-04-27 | Self-exhausting centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203248368U (en) |
-
2013
- 2013-04-27 CN CN 201320222399 patent/CN203248368U/en not_active Expired - Fee Related
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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: 20131023 Termination date: 20150427 |
|
| EXPY | Termination of patent right or utility model |