CN2137731Y - Self-suction centrifugal pump - Google Patents
Self-suction centrifugal pump Download PDFInfo
- Publication number
- CN2137731Y CN2137731Y CN 92221281 CN92221281U CN2137731Y CN 2137731 Y CN2137731 Y CN 2137731Y CN 92221281 CN92221281 CN 92221281 CN 92221281 U CN92221281 U CN 92221281U CN 2137731 Y CN2137731 Y CN 2137731Y
- Authority
- CN
- China
- Prior art keywords
- water
- chamber
- air
- volute
- self
- 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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Abstract
The utility model provides a self-suction centrifugal pump, whose pump body has double layers of housings. The inner layer is an air suction chamber and a volute casing, and an impeller is arranged in the volute casing. The air suction chamber and the impeller shaft are positioned at a same horizontal shaft line, and the connecting point of the air suction chamber and the water inlet is provided with a one-way valve. The upper part of the outer layer is an air-water separation chamber, the lower part is a water storing chamber, the air-water separation chamber is communicated with the volute casing, a backwater passage is arranged between the air-water separation chamber and the water storing chamber, and the passage is communicated with the inlet hole at the bottom of the volute casing. The utility model sucks water in a shaft direction and discharges water in a radial direction, having the function of self water suction, having the characteristics of convenient installation, maintenance, and operation.
Description
The utility model relates to a kind of water pump, particularly a kind of self-priming centrifugal water pump.
At present the IS centrifugal water pump that uses does not have self-absorption function, promptly self can not get rid of the air of the pump housing in the water pipe between the low water level when doing to inhale journey, forms negative pressure of vacuum, and therefore fills with water in the pump housing and suction sleeve in advance is with deaeration.But the lower end of suction sleeve must the dress bottom valve, leaks to prevent the pre-water of annotating, in case bottom valve leaks, the water pump work that just can not absorb water makes maintenance, uses equal inconvenience.
The purpose of this utility model is to provide a kind of improved IS centrifugal water pump, has self-absorption function, can easily low level water be drawn to high-order output.
The utility model is achieved in that and makes the pump housing with double Shell that its internal layer is suction chamber and the volute that joins with water intake.Impeller is installed in the volute.Suction chamber and water intake joining place have an one-way valve.Induction chamber and impeller shaft are same horizontal axis.Its outer field top is air-water separation chamber; The bottom is a water chamber.A backwater channel is arranged between air-water separation chamber and the water chamber, and the water inlet of this backwater channel and volute bottom joins, and air-water separation chamber communicates with volute top, and picks out water pipe.
When the self-priming centrifugal water pump after the improvement uses as long as by water injection hole water is filled at the following position of pump housing internal layer in advance, with isolate from outer air.When the motor drives impeller is made high speed rotating, air-water separation chamber is just got, entered to the water of pump housing internal layer, pump housing internal layer forms low pressure simultaneously, then low level water just rises in pipe by atmospheric pressure and passes through transfer of air in the intake pipe with one-way valve opens, the pump housing is got by impeller with the water of pump housing internal layer to the air in one section intake pipe of low water level, because the difference of water and air specific weight, air is discharged the pump housing through air-water separation chamber, and water returns again in the volute through backwater channel, makes and remains the water level required with isolate from outer air in the volute.Impeller constantly rotates, and water level just constantly rises, and until entering the pump housing, supplies water to outlet pipe, has promptly realized the self-absorption function of centrifugal water pump.One-way valve is closed because of the pressure that is subjected to internal layer water during shutdown, makes still to have the needed water of starting suction once more in the pump housing, and needn't pour water again.
The self-priming centrifugal water pump that the utility model provides is still axially intake for the pump housing, radially water outlet, therefore can replace the former IS centrifugal water pump that does not possess self-absorption function in the pipeline that is installed in easily, and needn't be at suction sleeve lower end dress bottom valve, can be aloft from the low water level suction, have installation, maintenance, characteristics easy to use.
Below in conjunction with the accompanying drawings concrete structure of the present utility model is described in any further with embodiment.
The sectional drawing of the self-priming centrifugal water pump that Fig. 1 provides for the utility model.
The rotatable parts of centrifugal water pump are the impellers 8 with impeller shaft 10 key connecting.Impeller shaft 10 and motor output shaft shaft coupling, and by 11 supportings of bearing suspension.The pump housing 1 its internal layer with double Shell axially is followed successively by induction chamber 4 and volute 6.Induction chamber 4 is same horizontal axis with impeller shaft 10.Induction chamber 4 is connected with the water intake of inlet end cap 12 mutually through an one-way valve 5.One-way valve 5 to unlatching, constitutes water pump spindle to water inlet to water inlet.Impeller 8 is installed in the volute 6, and the end face of volute 6 is by pump cover 9 sealings.The pump housing 1 skin with double Shell: its top is air-water separation chamber 2 and communicates with the top of volute 6, as radially water outlet of water pump; Its underpart is a water chamber 3.A backwater channel 7 is arranged between air-water separation chamber 2 and the water chamber 3, and the water inlet of this backwater channel and volute 6 bottoms joins.Backwater channel 7 is a flat horn shape interface with the joining place of water inlet, so that the backwater after the air-water separation quickens to return volute 6 by the centrifugal force that impeller 8 provides through backwater channel 7.
Claims (2)
1, a kind of self-priming centrifugal water pump, it comprises water intake, the pump housing, impeller, it is characterized in that the pump housing 1 is double Shell, internal layer is induction chamber 4, impeller 8 and the volute 6 that joins with water intake, induction chamber 4 has an one-way valve 5 with the water intake joining place, and induction chamber 4 is same horizontal axis with impeller shaft 10; Outer field top is that air-water separation chamber 2, bottom are water chamber 3, and a backwater channel 7 is arranged between air-water separation chamber 2 and the water chamber 3, and the water inlet of this backwater channel and volute 6 bottoms joins, and air-water separation chamber 2 communicates with volute 6 tops.
2, centrifugal water pump according to claim 1 is characterized in that the backwater channel 7 and the joining place of water inlet, volute 6 bottom are a flat horn shape interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92221281 CN2137731Y (en) | 1992-09-05 | 1992-09-05 | Self-suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92221281 CN2137731Y (en) | 1992-09-05 | 1992-09-05 | Self-suction centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2137731Y true CN2137731Y (en) | 1993-07-07 |
Family
ID=33768110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92221281 Expired - Fee Related CN2137731Y (en) | 1992-09-05 | 1992-09-05 | Self-suction centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2137731Y (en) |
-
1992
- 1992-09-05 CN CN 92221281 patent/CN2137731Y/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 | ||
| 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 |