CN2495832Y - Self-sucking type centrifugical pump - Google Patents
Self-sucking type centrifugical pump Download PDFInfo
- Publication number
- CN2495832Y CN2495832Y CN 01232916 CN01232916U CN2495832Y CN 2495832 Y CN2495832 Y CN 2495832Y CN 01232916 CN01232916 CN 01232916 CN 01232916 U CN01232916 U CN 01232916U CN 2495832 Y CN2495832 Y CN 2495832Y
- Authority
- CN
- China
- Prior art keywords
- impeller
- impeller cavity
- communicated
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a self-sucking type centrifugal pump, including an outlet and an inlet on shell and two impellers positioned in impeller chambers in the shell. The two impellers are coaxial and arranged respectively in separated impeller chambers. Wherein, the inlet is communicated with middle of the impeller chamber 1, and an annular hollow air-liquid dividing chamber is arranged around the impeller chamber 1. The upper part and lower part of the impeller chamber 1 have through holes communicated with the air-liquid dividing chamber. Meanwhile, the outlet is communicated with lateral of the impeller chamber 2. The shell internally has a connecting passage. One end of the passage is communicated with the upper part of the air-liquid dividing chamber while the other end communicated with middle part of the impeller chamber 2. The centrifugal pump disclosed in the utility model can be started after filled completely with liquid, simplifying operation. The structure of double impellers is beneficial to improve operational efficiency and increase largely pump lift.
Description
Technical field
The utility model relates to a kind of centrifugal pump.
Background technique
Normally used centrifugal pump structure comprises and is arranged at the entrance and exit on the housing and is arranged at the impeller in the impeller cavity in the housing, inlet is connected with the middle part of impeller cavity, outlet is connected with the sidepiece of impeller cavity, and the direction of outlet is consistent with the tangent direction of impeller rotation.Need before the operation of the centrifugal pump of this kind structure with impeller cavity and with conduit that inlet is communicated with in fill with liquid, if with the conduit that is communicated with that enters the mouth in have air in certain amount, then can't normally move.
Summary of the invention
The purpose of this utility model is to provide the centrifugal pump that need not will fill with liquid in the inlet duct before a kind of the startup but have self-absorption function, raises the efficiency and lift.
For achieving the above object, the technical solution adopted in the utility model is: a kind of self priming centrifugal pump, comprise and be arranged at the entrance and exit on the housing and be arranged at the impeller in the impeller cavity in the housing, the quantity of described impeller is two, coaxially to each other, lay respectively in the impeller cavity spaced apart from each other, described inlet is connected with the middle part of first impeller cavity, be provided with the gas-liquid separation chamber of annular hollow around first impeller cavity, be respectively equipped with the through hole that communicates with gas-liquid separation chamber in the upper and lower of first impeller cavity, described outlet is connected with the sidepiece of second impeller cavity, in the described housing connecting passage is set, the one end is connected with gas-liquid separation chamber top, and the other end is connected with the middle part of second impeller cavity.
Owing to adopted above technological scheme, two impeller cavities spaced apart from each other are set in housing, inlet is connected with the middle part of first impeller cavity, be provided with the gas-liquid separation chamber of annular hollow around first impeller cavity, be respectively equipped with the through hole that communicates with gas-liquid separation chamber in the upper and lower of first impeller cavity.Before the startup, liquid will be filled with in the pump, during the rotation of first impeller, under pressure, enter first impeller cavity with the gas that retains in the pipe that is connected that enters the mouth, and the through hole that mixes through the first impeller cavity top with liquid under the centrifugal action of impeller rotation enters gas-liquid separation chamber, in annular gas-liquid separation chamber, liquid flows back to first impeller cavity by the through hole of the first impeller cavity bottom under the pressure effect of gravity and impeller rotation, continue and the air mixing that enters from the ingress, the connecting passage that the air on annular gas-liquid separation chamber top then is provided with in housing enters second impeller cavity, be sent to outlet by second impeller, until will with the gas emptying in the pipe that is connected of inlet, promptly finish the self-priming process.Centrifugal pump of the present utility model need only get final product filling with liquid in the pump before starting, and has made things convenient for operation, and operational efficiency improves after the structure of employing twin-stage impeller, and lift nearly doubles.
Description of drawings
Fig. 1 is the sectional view of a kind of mode of execution of the utility model.
Embodiment
With reference to Fig. 1, the utility model self priming centrifugal pump, comprise inlet 2 and the outlet 3 that is arranged on the housing 1 and be arranged at the impeller in the impeller cavity in the housing, the quantity of described impeller is two, coaxially to each other, lay respectively in the impeller cavity spaced apart from each other, described inlet 2 is connected with the middle part of first impeller cavity 4, be provided with the gas-liquid separation chamber 5 of annular hollow around first impeller cavity 4, be respectively equipped with the through hole that communicates with gas-liquid separation chamber in the upper and lower of first impeller cavity, comprise top through hole 51 and lower through-hole 52, described outlet 3 is connected with the sidepiece of second impeller cavity 6, connecting passage 7 is set in the described housing, and the one end is connected with gas-liquid separation chamber top, and the other end is connected with the middle part of second impeller cavity 6.Two impellers shown in Figure 1 are installed on the axle of same level, and the dividing plate cooperation place between this and two impeller cavities is provided with seal ring 8.In order to reduce axial surface friction drag, two blades are installed in mode back-to-back, and promptly the blade angle of two impellers is opposite.
Claims (3)
1, a kind of self priming centrifugal pump, comprise and be arranged at the entrance and exit on the housing and be arranged at the impeller in the impeller cavity in the housing, it is characterized in that: the quantity of described impeller is two, coaxially to each other, lay respectively in the impeller cavity spaced apart from each other, described inlet is connected with the middle part of first impeller cavity, be provided with the gas-liquid separation chamber of annular hollow around first impeller cavity, be respectively equipped with the through hole that communicates with gas-liquid separation chamber in the upper and lower of first impeller cavity, described outlet is connected with the sidepiece of second impeller cavity, in the described housing connecting passage is set, the one end is connected with gas-liquid separation chamber top, and the other end is connected with the middle part of second impeller cavity.
2, self priming centrifugal pump as claimed in claim 1 is characterized in that: described two impellers are installed on the same axis, and the dividing plate cooperation place between this and two impeller cavities is provided with seal ring.
3, self priming centrifugal pump as claimed in claim 2 is characterized in that: the blade angle of described two impellers is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232916 CN2495832Y (en) | 2001-08-07 | 2001-08-07 | Self-sucking type centrifugical pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01232916 CN2495832Y (en) | 2001-08-07 | 2001-08-07 | Self-sucking type centrifugical pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2495832Y true CN2495832Y (en) | 2002-06-19 |
Family
ID=33646873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01232916 Expired - Fee Related CN2495832Y (en) | 2001-08-07 | 2001-08-07 | Self-sucking type centrifugical pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2495832Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029378A1 (en) * | 2021-08-30 | 2023-03-09 | 陈荣国 | Self-suction type multi-stage composite canned motor pump |
-
2001
- 2001-08-07 CN CN 01232916 patent/CN2495832Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023029378A1 (en) * | 2021-08-30 | 2023-03-09 | 陈荣国 | Self-suction type multi-stage composite canned motor pump |
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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 |