CN110397600A - Self priming centrifugal pump - Google Patents
Self priming centrifugal pump Download PDFInfo
- Publication number
- CN110397600A CN110397600A CN201910737698.8A CN201910737698A CN110397600A CN 110397600 A CN110397600 A CN 110397600A CN 201910737698 A CN201910737698 A CN 201910737698A CN 110397600 A CN110397600 A CN 110397600A
- Authority
- CN
- China
- Prior art keywords
- water
- pump housing
- water inlet
- pipe
- inlet pipe
- 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.)
- Pending
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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
- F04D9/02—Self-priming pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of self priming centrifugal pump, it includes the pump housing (1), impeller (9) are installed in the pump housing, outlet pipe (8) is upwardly extended from the top of the pump housing, water inlet pipe (3) is Z-shaped, extend from the collapsible tube position of pump housing left part, communications and liaison have return pipe (5) between outlet pipe and the waist of water inlet pipe, and the mouthpiece of the nozzle (4) on return pipe is downward.Self-priming principle is, when impeller rotates, the water sucking mouth of impeller is negative pressure, and water is high pressure in the pump housing, return pipe links up negative pressure portion and high-voltage section, make water circulation, the nozzle of return pipe sprays high-velocity flow and mixes with the air in water inlet pipe, and gas liquid mixture separates in the pump housing, air is escaped from outlet pipe, water enters return pipe, and the air in most water inlet pipe can be quickly taken out by water circulation, is discharged centrifugal pump.Beneficial effect is that the structure of centrifugal pump is simple, has good self-suction function；Required irrigation quantity is few, after pouring water for the first time, can not pour water when reusing.
Description
Technical field
The present invention relates to a kind of centrifugal pumps, with self-suction function.
Background technique
Centrifugal pump without self-suction function needs to fill water into the pump housing and water inlet line before starting, to exclude the pump housing
With the air in water inlet line, institute's water requirement is big, and note fills time-consuming and laborious, inconvenient to use.It is existing with self-suction function
Centrifugal pump, although water injection rate is smaller, structure is more complicated, and after in addition shutting down, due to siphonage, the water in the pump housing can flow
Light also needs to fill the water, it is necessary to improve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of self priming centrifugal pump, with good self-suction function and
Structure is simple.
The technical scheme is that a kind of self priming centrifugal pump comprising the pump housing 1 is equipped with impeller 9, leaf in the pump housing
Sealing ring 2 is equipped between the water sucking mouth position of wheel and the collapsible tube of pump housing left part, characterized in that outlet pipe 8 is from the top of the pump housing
On upwardly extend, water inlet pipe 3 be it is Z-shaped, the waist of water inlet pipe is vertically arranged, and the end and root of water inlet pipe are horizontally disposed, water inlet
The root of pipe is extended from the collapsible tube position of pump housing left part, and communications and liaison have return pipe 5 between outlet pipe and the waist of water inlet pipe,
Downward, mouthpiece position is on the top water horizontal line of the pump housing for the mouthpiece of nozzle 4 on return pipe.
Self-priming principle of the invention is that water is first filled into the pump housing, and water level is slightly below the mouthpiece of nozzle, when impeller rotates,
The water sucking mouth of impeller be negative pressure, water enters impeller, then throws away from the blade on impeller, and hydraulic pressure increases in pump housing chamber, high pressure water into
Enter return pipe, spray high-velocity flow through nozzle, high-velocity flow is mixed with the air in water inlet pipe, into impeller, in pump housing chamber
Water is again introduced into return pipe, and air is escaped from outlet pipe 8, and water circulation path passes through water circulation energy as shown in Fig. 1 arrow line
The air in water inlet pipe to the greatest extent is quickly taken out, centrifugal pump is discharged.
The invention has the advantages that the structure of centrifugal pump is simple, there is good self-suction function；Required irrigation quantity
It is few, after pouring water for the first time, it can not pour water when reusing.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Attached drawing mark are as follows: the pump housing 1, sealing ring 2, water inlet pipe 3, nozzle 4, return pipe 5, valve 6, water filling port 7, outlet pipe 8,
Impeller 9, mechanical seal 10, pump shaft 11, pump cover 12, pedestal 13.
Specific embodiment
A kind of self priming centrifugal pump comprising the pump housing 1, pump cover 12, pedestal 13 extend downwardly out from the pump housing, pump cover and the pump housing
It is tightly connected and constitutes pump housing chamber, impeller 9 is installed in the pump housing, impeller is fixedly connected with pump shaft 11, is equipped on pump shaft mechanical close
Envelope 10, mechanical seal is between impeller and pump cover, and pump shaft is stretched out from pump cover to be connect with power device, the water suction oral area of impeller
Sealing ring 2 is equipped between position and the collapsible tube of pump housing left part, outlet pipe 8 is upwardly extended from the top of the pump housing, and water inlet pipe 3 is Z
The waist of shape, water inlet pipe is vertically arranged, and the end and root of water inlet pipe are horizontally disposed, the receipts of the root of water inlet pipe from pump housing left part
Draw position is extended, and communications and liaison have return pipe 5, the mouthpiece of the nozzle 4 on return pipe between outlet pipe and the waist of water inlet pipe
Downward, mouthpiece position is on the top water horizontal line of the pump housing.
Valve 6 is installed on return pipe, after centrifugal pump is normally discharged, valve can be closed, prevent effluent recycling, with drop
Low power consumption.
For convenience of water filling, the water filling port 7 with plug is equipped on return pipe.
Before when use, outlet pipe is connect with external user pipe, and water inlet pipe is connect with external water pipeline.For the first time
In use, being filled the water by water filling port to the pump housing, after pump housing water is full, the plug of water filling port is blocked, then starts impeller, centrifugal pump is just
Often after water outlet, valve is closed；Valve is first opened before shutting down, is then shut down；The water of the pump housing and water inlet pipe after shutdown, will not be because of siphon
And streamer (atmospheric pressure, which is applied in outlet pipe, can occur siphonage), this is because valve is opened, atmosphere pressure energy applies
In water inlet pipe, the water level of the pump housing and water inlet pipe can not fill the water when being again started up close to the mouthpiece position of nozzle after shutdown.
Claims (3)
1. a kind of self priming centrifugal pump comprising the pump housing (1) is equipped with impeller (9) in the pump housing, the water sucking mouth position of impeller and pump
Sealing ring (2) are equipped between the collapsible tube of body left part, characterized in that outlet pipe (8) is upwardly extended from the top of the pump housing, water inlet
Manage (3) be it is Z-shaped, the waist of water inlet pipe is vertically arranged, and the end and root of water inlet pipe are horizontally disposed, and the root of water inlet pipe is from the pump housing
The collapsible tube position of left part is extended, and communications and liaison have return pipe (5) between outlet pipe and the waist of water inlet pipe, the spray on return pipe
Downward, mouthpiece position is on the top water horizontal line of the pump housing for the mouthpiece of mouth (4).
2. self priming centrifugal pump according to claim 1, characterized in that be equipped with valve (6) on return pipe.
3. self priming centrifugal pump according to claim 1 or 2, characterized in that be equipped with the note with plug on return pipe
The mouth of a river (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737698.8A CN110397600A (en) | 2019-08-12 | 2019-08-12 | Self priming centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910737698.8A CN110397600A (en) | 2019-08-12 | 2019-08-12 | Self priming centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110397600A true CN110397600A (en) | 2019-11-01 |
Family
ID=68327908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910737698.8A Pending CN110397600A (en) | 2019-08-12 | 2019-08-12 | Self priming centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110397600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664097A (en) * | 2020-07-06 | 2020-09-15 | 江苏大学镇江流体工程装备技术研究院 | Self-priming device of centrifugal pump |
-
2019
- 2019-08-12 CN CN201910737698.8A patent/CN110397600A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664097A (en) * | 2020-07-06 | 2020-09-15 | 江苏大学镇江流体工程装备技术研究院 | Self-priming device of centrifugal pump |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |