CN110953161A - Centrifugal pump device with self-priming water pumping function and self-priming water pumping method - Google Patents
Centrifugal pump device with self-priming water pumping function and self-priming water pumping method Download PDFInfo
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- CN110953161A CN110953161A CN201911414467.XA CN201911414467A CN110953161A CN 110953161 A CN110953161 A CN 110953161A CN 201911414467 A CN201911414467 A CN 201911414467A CN 110953161 A CN110953161 A CN 110953161A
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- centrifugal pump
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000005086 pumping Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 43
- 230000009471 action Effects 0.000 claims description 12
- 230000037452 priming Effects 0.000 claims 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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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
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal pump device with a self-suction water pumping function, which comprises an air suction device, a centrifugal pump and an airtight communication cavity, wherein the airtight communication cavity is provided with a water outlet, a first one-way check valve is arranged in the water outlet, the first one-way check valve only allows fluid to be discharged from the airtight communication cavity, and an air inlet of the air suction device is communicated with a water outlet of the centrifugal pump through the airtight communication cavity. The centrifugal pump device realizes the self-suction pumping function of the centrifugal pump, has the characteristics of high working efficiency, long service life and the like, is not limited by the use environment, does not need to be placed in water, and is more convenient to use and maintain. The invention also discloses a self-priming water pumping method of the centrifugal pump.
Description
Technical Field
The invention relates to the field of water pumps, in particular to a centrifugal pump device with a self-priming water pumping function and a self-priming water pumping method.
Background
In the prior art, there are two types of water pumps, one is a centrifugal pump, and the other is a diaphragm pump.
The centrifugal pump, especially the miniature centrifugal pump, its working principle is to rely on the high-speed rotatory motor to drive impeller (blade) high-speed rotation, make liquid produce inertial centrifugal force under high-speed rotation, under the centrifugal force effect, liquid is continuously inhaled to one side of impeller, and liquid is continuously discharged again to the other side, forms continuous pumping operation. The centrifugal pump can not pump water in an isolated manner, and a pump cavity and an inlet pipeline of the centrifugal pump must be filled with liquid media before being used to prevent cavitation, so that the centrifugal pump must be placed in water (so called a submersible pump) when being used to prevent dry burning of a motor in an idling manner. The centrifugal pump is generally made of a brushless motor, has the characteristics of high working efficiency, long service life and the like, but has the defects of limited use environment, inconvenient use and maintenance and no self-suction water pumping function.
The diaphragm pump is divided into a motor-driven type and an electromagnetic-driven type, and the diaphragm pump is structurally composed of a power end and a fluid end (pump cavity), wherein the power end enables a diaphragm in the pump cavity to reciprocate through a connecting device (or a connecting mechanism), so that the volume of the pump cavity is changed, a suction valve and a discharge valve are arranged in the pump cavity, fluid is compressed in the reciprocating process of the diaphragm, and continuous pump output operation is formed through the closing and stopping functions of the suction valve and the discharge valve. The diaphragm pump can be used as a water pump or an air pump, so that the diaphragm pump has a self-suction function and can be placed outside water when in use, but the defect is that the diaphragm is made of silicon rubber, and the silicon rubber diaphragm is easy to wear in high-speed reciprocating motion and stops working, so that the diaphragm pump is short in service life and is not suitable for long-time use.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the centrifugal pump device, which realizes the self-priming water pumping function of the centrifugal pump, has the characteristics of high working efficiency, long service life and the like, is not limited by the use environment, does not need to be placed in water, and is more convenient to use and maintain.
The invention also provides a self-priming water pumping method of the centrifugal pump.
The technical problem to be solved by the invention is realized by the following technical scheme:
the utility model provides a centrifugal pump device with from inhaling function of drawing water, includes air exhaust device, centrifugal pump and airtight intercommunication chamber, airtight intercommunication chamber has the outlet, be provided with first one-way check valve in the outlet, first one-way check valve only allows fluid to follow airtight intercommunication intracavity is discharged, air exhaust device's air inlet with pass through between the delivery port of centrifugal pump airtight intercommunication chamber is linked together.
Further, the device also comprises a first pipeline, a second pipeline and a third pipeline; the first pipeline is communicated with the water outlet of the airtight communicating cavity so as to discharge liquid in the airtight communicating cavity outwards; the second pipeline is communicated between the air inlet of the air exhaust device and the air outlet of the airtight communication cavity; the third pipeline is communicated with the air outlet of the air extracting device so as to discharge the fluid extracted by the air extracting device outwards.
Further, the other end of the third pipeline is directly communicated with the outside, or the other end of the third pipeline is communicated with the first pipeline.
Further, a second one-way check valve is arranged in an exhaust port of the airtight communication cavity communicated with the air exhaust device, and the second one-way check valve only allows fluid to flow from the airtight communication cavity to the air exhaust device.
The centrifugal pump and the air extractor are respectively and electrically connected with the air pump, and the controller is further used for controlling the starting and the closing of the centrifugal pump and the air extractor.
Further, the liquid level sensor is arranged in the airtight communication cavity and used for sensing the liquid level of liquid in the airtight communication cavity.
Further, the centrifugal pump is arranged in the airtight communication cavity, and a water inlet of the centrifugal pump is led out from the airtight communication cavity; or the centrifugal pump is arranged outside the airtight communicating cavity, and a water outlet of the centrifugal pump is communicated with a water inlet of the airtight communicating cavity.
Further, the air suction device is a diaphragm pump.
A self-priming water pumping method of a centrifugal pump comprises the following steps:
step 1: and pumping gas in a pump cavity of the centrifugal pump to form negative pressure in the pump cavity of the centrifugal pump, so that liquid enters the pump cavity of the centrifugal pump from a water inlet of the centrifugal pump under the action of the negative pressure.
Further, after the liquid enters the pump cavity of the centrifugal pump, the method also comprises the following steps:
step 2: and stopping pumping the gas in the pump cavity of the centrifugal pump.
The invention has the following beneficial effects: the air extracting device is additionally arranged in the centrifugal pump device, the air in the airtight communication cavity is extracted through the air extracting device, so that a negative pressure is formed in a pump cavity in the centrifugal pump, liquid is made to enter the pump cavity of the centrifugal pump from a water inlet of the centrifugal pump under the action of the negative pressure, then the centrifugal pump can form continuous pump conveying operation on the liquid, after the airtight communication cavity is filled with the liquid, the first one-way check valve is automatically opened under the action of the hydraulic pressure to discharge the liquid from the water outlet, the self-suction water pumping function of the centrifugal pump is achieved, the centrifugal pump has the advantages of being high in working efficiency, long in service life and the like, the centrifugal pump is not limited by the use environment, does not need to be placed in water, and is more convenient to use and.
Drawings
FIG. 1 is a schematic view of a centrifugal pump assembly provided by the present invention;
FIG. 2 is a schematic view of another centrifugal pump assembly provided by the present invention;
FIG. 3 is a schematic view of yet another centrifugal pump assembly provided by the present invention;
fig. 4 is a step diagram of the self-priming water pumping method provided by the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1-3, a centrifugal pump device with a self-priming water pumping function includes an air pumping device 1, a centrifugal pump 2, and an airtight communicating cavity 31, where the airtight communicating cavity 31 has a water outlet, and a first one-way check valve 4 is disposed in the water outlet, and the first one-way check valve 4 only allows fluid to be discharged from the airtight communicating cavity 31, and an air inlet of the air pumping device 1 is communicated with a water outlet of the centrifugal pump 2 through the airtight communicating cavity 31.
An air extracting device 1 is additionally arranged in the centrifugal pump device, air in the airtight communicating cavity 31 is extracted through the air extracting device 1, so that a negative pressure is formed in a pump cavity in the centrifugal pump 2, then liquid 101 enters the pump cavity of the centrifugal pump 2 from a water inlet of the centrifugal pump 2 under the action of the negative pressure, then the centrifugal pump 2 can perform continuous pump operation on the liquid 101, after the liquid 101 is filled in the airtight communicating cavity 31, the first one-way check valve 4 is automatically opened under the action of hydraulic pressure to discharge the liquid 101 from the water outlet, the self-suction water pumping function of the centrifugal pump 2 is achieved, the centrifugal pump device has the advantages of being high in working efficiency, long in service life and the like, the centrifugal pump 2 is not limited by the use environment, does not need to be placed in water, and is more convenient to use and maintain.
The first one-way check valve 4 can be, but is not limited to, an umbrella valve, a flap valve, a solenoid valve, etc.
The centrifugal pump arrangement further comprises a first pipe 5, a second pipe 6 and a third pipe 7; the first pipeline 5 is communicated with a water outlet of the airtight communication cavity 31 so as to discharge the liquid 101 in the airtight communication cavity 31; the second pipeline 6 is communicated between the air inlet of the air suction device 1 and the air outlet of the airtight communication cavity 31; the third pipeline 7 is communicated with the air outlet of the air extractor 1, so that the fluid extracted by the air extractor 1 is discharged outwards.
As shown in fig. 3, the other end of the third pipeline 7 can be directly communicated with the outside so as to directly discharge the fluid pumped by the air pumping device 1 to the outside; since the fluid pumped by the gas pumping device 1 may include a part of the liquid 101 overflowing from the airtight communication cavity 31 in addition to the gas, preferably, as shown in fig. 1 and 2, the other end of the third pipeline 7 is communicated with the first pipeline 5 to introduce the gas and the liquid 101 pumped by the gas pumping device 1 into the first pipeline 5 for uniform discharge.
A second one-way check valve 8 is arranged in an exhaust port of the airtight communication cavity 31 communicated with the air exhaust device 1, and the second one-way check valve 8 only allows fluid to flow from the airtight communication cavity 31 to the air exhaust device 1.
The second one-way check valve 8 can be, but is not limited to, an umbrella valve, a flap valve, a solenoid valve, etc. In particular, the second one-way check valve 8 is not essential, and the exhaust port of the airtight communication chamber 31 may be directly communicated with the intake port of the air extractor 1.
The centrifugal pump device further comprises a controller 10 which is electrically connected with the centrifugal pump 2 and the air extractor 1 respectively so as to control the starting and the closing of the centrifugal pump 2 and the air extractor 1.
The controller 10 has a control switch, and when the control switch is pressed, the controller 10 turns on the air extractor 1.
The centrifugal pump device further comprises a liquid level sensor 9 which is arranged in the airtight communicating cavity 31, electrically connected with the controller 10 and used for sensing the liquid level of the liquid 101 in the airtight communicating cavity 31.
The activation time of the centrifugal pump 2 by the controller 10 may be dependent on the specific requirements. Such as: when a control switch on the controller 10 is pressed, the centrifugal pump 2 and the air extractor 1 can be started synchronously, so that the centrifugal pump 2 is in an idle state when being started, and the continuous pumping action of the centrifugal pump 2 is formed after liquid 101 is filled in a pump cavity of the centrifugal pump 2 under the action of negative pressure; for another example: a first preset time can be preset in the controller 10, and the centrifugal pump 2 is started after the air pumping device 1 starts pumping air and reaches the first preset time; for another example: after the liquid 101 overflows from the water outlet of the centrifugal pump 2 into the airtight communicating cavity 31 under the action of negative pressure and triggers the liquid level sensor 9, the centrifugal pump 2 is started.
Likewise, the time that the controller 10 shuts down the gas evacuation device 1 can also be dependent on the particular needs. Such as: a second preset time can be preset in the controller 10, and the air exhaust device 1 is closed after air exhaust is started and the second preset time is reached; for another example: after the liquid 101 overflows from the water outlet of the centrifugal pump 2 into the airtight communicating cavity 31 under the action of negative pressure and triggers the liquid level sensor 9, the air extractor 1 is closed.
The suction device 1 may be, but is not limited to, a diaphragm pump.
In one embodiment, as shown in fig. 1 and 3, the centrifugal pump 2 is disposed in the airtight communication chamber 31, and the water inlet of the centrifugal pump 2 is led out from the airtight communication chamber 31.
The centrifugal pump device further comprises a containing shell 3, wherein the containing shell 3 is internally provided with the airtight communicating cavity 31, the first containing cavity 32 and the second containing cavity 33 which are separated from each other, the air extracting device 1 is arranged in the first containing cavity 32, the first pipeline 5, the second pipeline 6 and the third pipeline 7 are arranged in the second containing cavity 33, and the first pipeline 5 is led out from the first containing cavity 32.
In another embodiment, as shown in fig. 2, the centrifugal pump 2 is disposed outside the airtight communication chamber 31, the airtight communication chamber 31 has a water inlet, and the water inlet of the airtight communication chamber 31 is communicated with the water outlet of the centrifugal pump 2.
The centrifugal pump device further comprises a containing shell 3, wherein the containing shell 3 is internally provided with an airtight communicating cavity 31, a first containing cavity 32, a second containing cavity 33 and a third containing cavity 34 which are separated from each other, the air extractor 1 is arranged in the first containing cavity 32, a first pipeline 5, a second pipeline 6 and a third pipeline 7 are arranged in the second containing cavity 33, the first pipeline 5 is led out from the second containing cavity 33, the centrifugal pump 2 is arranged in the third containing cavity 34, and a water inlet of the centrifugal pump 2 is led out from the third containing cavity 34.
In the above two embodiments, the other end of the third pipeline 7 in the second accommodating cavity 33 may be communicated with the first pipeline 5 as shown in fig. 1 and 2 or directly led out from the first accommodating cavity 32 as shown in fig. 3; the parts of the second pipeline 6 and the third pipeline 7 which are respectively communicated with the air extractor 1 can be arranged in the first accommodating cavity 32; the controllers 10 are all disposed in the first accommodating cavity 32.
Example two
A self-priming pumping method of a centrifugal pump is not limited to be applied to the centrifugal pump device in the first embodiment, and comprises the following steps as shown in FIG. 4:
step 1: and pumping air in the pump cavity of the centrifugal pump 2 to form negative pressure in the pump cavity of the centrifugal pump 2, so that the liquid 101 enters the pump cavity of the centrifugal pump 2 from the water inlet of the centrifugal pump 2 under the action of the negative pressure.
In step 1, a gas in the pump chamber of the centrifugal pump 2 is extracted by an air extractor 1, and the starting time of the centrifugal pump 2 can be determined according to specific requirements.
Such as: the centrifugal pump 2 and the air extractor 1 can be started synchronously, so that the centrifugal pump 2 is in an idling state when being started, and the centrifugal pump 2 can form a continuous pumping effect after liquid 101 is filled in a pump cavity of the centrifugal pump 2 under the action of negative pressure; for another example: a first preset time can be preset, and the centrifugal pump 2 is started after the air extracting device 1 starts to extract air and reaches the first preset time; for another example: a liquid level sensor 9 can be arranged in an airtight communicating cavity 31 which communicates an air inlet of the air extractor 1 with a water outlet of the centrifugal pump 2, and the centrifugal pump 2 is started only after the liquid 101 overflows from the water outlet of the centrifugal pump 2 into the airtight communicating cavity 31 under the negative pressure effect and triggers the liquid level sensor 9.
Step 2: the pumping of gas in the pump chamber of the centrifugal pump 2 is stopped.
In step 2, the air exhaust device 1 is turned off to stop the air exhaust, and the turning-off time of the air exhaust device 1 can also be determined according to specific requirements.
Such as: a second preset time can be preset, and the air exhaust device 1 is closed after air exhaust is started and the second preset time is reached; for another example: a liquid level sensor 9 may be disposed in the airtight communicating cavity 31 communicating the air inlet of the air extractor 1 and the water outlet of the centrifugal pump 2, and the air extractor 1 is closed only after the liquid 101 overflows from the water outlet of the centrifugal pump 2 into the airtight communicating cavity 31 under the negative pressure and triggers the liquid level sensor 9.
The above-mentioned embodiments only express the embodiments of the present invention, and the description is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, but all the technical solutions obtained by using the equivalent substitution or the equivalent transformation should fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a centrifugal pump device with from inhaling function of drawing water, its characterized in that includes air exhaust device, centrifugal pump and airtight intercommunication chamber, airtight intercommunication chamber has the outlet, be provided with first one-way check valve in the outlet, first one-way check valve only allows fluid to follow airtight intercommunication intracavity discharge, air exhaust device's air inlet with pass through between the delivery port of centrifugal pump airtight intercommunication chamber is linked together.
2. The centrifugal pump apparatus with self priming pumping function of claim 1 further comprising a first line, a second line and a third line; the first pipeline is communicated with the water outlet of the airtight communicating cavity so as to discharge liquid in the airtight communicating cavity outwards; the second pipeline is communicated between the air inlet of the air exhaust device and the air outlet of the airtight communication cavity; the third pipeline is communicated with the air outlet of the air extracting device so as to discharge the fluid extracted by the air extracting device outwards.
3. The centrifugal pump apparatus with self-priming water pumping function according to claim 2, wherein the other end of the third pipeline is directly communicated with the outside, or the other end of the third pipeline is communicated with the first pipeline.
4. The centrifugal pump apparatus with self priming pumping function of claim 1 wherein a second one-way check valve is provided in the air outlet of the air tight communication chamber communicating with the air extractor, said second one-way check valve allowing only fluid to flow from the air tight communication chamber to the air extractor.
5. The centrifugal pump apparatus with self-priming water pumping function according to claim 1, further comprising a controller electrically connected to the centrifugal pump and the air pumping device respectively for controlling the starting and the closing of the centrifugal pump and the air pumping device.
6. The centrifugal pump apparatus with self-priming water pumping function according to claim 1, further comprising a liquid level sensor disposed in said airtight communication chamber for sensing a liquid level of the liquid in said airtight communication chamber.
7. The centrifugal pump apparatus with self-priming water pumping function according to claim 1, wherein said centrifugal pump is disposed in said airtight communication chamber, and a water inlet of said centrifugal pump is led out from said airtight communication chamber; or the centrifugal pump is arranged outside the airtight communicating cavity, and a water outlet of the centrifugal pump is communicated with a water inlet of the airtight communicating cavity.
8. The centrifugal pump apparatus with self priming pumping function of claim 1 wherein said pumping means is a diaphragm pump.
9. A self-priming water pumping method of a centrifugal pump is characterized by comprising the following steps:
step 1: and pumping gas in a pump cavity of the centrifugal pump to form negative pressure in the pump cavity of the centrifugal pump, so that liquid enters the pump cavity of the centrifugal pump from a water inlet of the centrifugal pump under the action of the negative pressure.
10. The method for self-priming pumping of a centrifugal pump according to claim 9, further comprising the steps of, after the liquid enters the pump chamber of said centrifugal pump:
step 2: and stopping pumping the gas in the pump cavity of the centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414467.XA CN110953161A (en) | 2019-12-31 | 2019-12-31 | Centrifugal pump device with self-priming water pumping function and self-priming water pumping method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911414467.XA CN110953161A (en) | 2019-12-31 | 2019-12-31 | Centrifugal pump device with self-priming water pumping function and self-priming water pumping method |
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| CN110953161A true CN110953161A (en) | 2020-04-03 |
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| CN201911414467.XA Pending CN110953161A (en) | 2019-12-31 | 2019-12-31 | Centrifugal pump device with self-priming water pumping function and self-priming water pumping method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB798094A (en) * | 1955-10-10 | 1958-07-16 | John Southern | Improvements in and relating to self-priming centrifugal pumping plant |
| US3296973A (en) * | 1964-03-20 | 1967-01-10 | Sykes Ltd Henry | Centrifugal pumps |
| US6152689A (en) * | 1996-07-26 | 2000-11-28 | Kabushiki Kaisha Yokota Seisakusho | Self-priming type cetrifugal pump |
| CN101153603A (en) * | 2006-09-29 | 2008-04-02 | 上海东方泵业(集团)有限公司 | Improved self-sucking pump |
| CN205001209U (en) * | 2015-08-26 | 2016-01-27 | 辽宁新天源泵业有限公司 | Water ring automatic control formula strong self -priming pump |
| CN108019358A (en) * | 2018-01-12 | 2018-05-11 | 安徽阿莫斯泵业有限公司 | A kind of centrifugal pump auxiliary self-priming apparatus |
| CN211174624U (en) * | 2019-12-31 | 2020-08-04 | 深圳市合一精密泵业科技有限公司 | Centrifugal pump device with self-priming pumping function |
-
2019
- 2019-12-31 CN CN201911414467.XA patent/CN110953161A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB798094A (en) * | 1955-10-10 | 1958-07-16 | John Southern | Improvements in and relating to self-priming centrifugal pumping plant |
| US3296973A (en) * | 1964-03-20 | 1967-01-10 | Sykes Ltd Henry | Centrifugal pumps |
| US6152689A (en) * | 1996-07-26 | 2000-11-28 | Kabushiki Kaisha Yokota Seisakusho | Self-priming type cetrifugal pump |
| CN101153603A (en) * | 2006-09-29 | 2008-04-02 | 上海东方泵业(集团)有限公司 | Improved self-sucking pump |
| CN205001209U (en) * | 2015-08-26 | 2016-01-27 | 辽宁新天源泵业有限公司 | Water ring automatic control formula strong self -priming pump |
| CN108019358A (en) * | 2018-01-12 | 2018-05-11 | 安徽阿莫斯泵业有限公司 | A kind of centrifugal pump auxiliary self-priming apparatus |
| CN211174624U (en) * | 2019-12-31 | 2020-08-04 | 深圳市合一精密泵业科技有限公司 | Centrifugal pump device with self-priming pumping function |
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