CN111140512A - Self-priming structure on multistage centrifugal pump - Google Patents
Self-priming structure on multistage centrifugal pump Download PDFInfo
- Publication number
- CN111140512A CN111140512A CN202010180455.1A CN202010180455A CN111140512A CN 111140512 A CN111140512 A CN 111140512A CN 202010180455 A CN202010180455 A CN 202010180455A CN 111140512 A CN111140512 A CN 111140512A
- Authority
- CN
- China
- Prior art keywords
- self
- channel
- centrifugal pump
- priming
- pump body
- 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.)
- Withdrawn
Links
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
- F04D1/08—Multi-stage pumps the stages being situated concentrically
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using 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
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
Abstract
The invention discloses a self-priming structure on a multistage centrifugal pump, which comprises a motor and a pump body, wherein a water inlet channel, an impeller chamber and a water outlet channel are arranged in the pump body, a water inlet communicated with the water inlet channel and a water outlet communicated with the water outlet channel are arranged on the pump body, a backflow channel is arranged between the water inlet channel and the water outlet channel, so that the water inlet channel is communicated with the water outlet channel, a self-priming valve is arranged in the backflow channel, the self-priming valve comprises a valve core and a spring, the valve core comprises a sealing cap and a guide rod arranged at the top end of the sealing cap, the sealing cap can play a sealing role on the backflow channel, and the spring always has downward elasticity on the sealing cap, so that the backflow channel is in. The self-priming structure on the multistage centrifugal pump realizes the self-priming function and improves the overall performance of the centrifugal pump.
Description
Technical Field
The invention relates to a self-priming structure on a multistage centrifugal pump.
Background
The existing centrifugal pump does not have a self-suction function, the whole function is single, and the automatic control degree is low.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a self-priming structure on a multistage centrifugal pump, which realizes the self-priming function and improves the overall performance of the centrifugal pump.
In order to solve the technical problems, the technical solution of the self-priming structure on the multistage centrifugal pump of the invention is as follows:
the invention discloses a self-priming structure on a multistage centrifugal pump, which comprises a motor and a pump body, wherein a water inlet channel, an impeller chamber and a water outlet channel are arranged in the pump body, a water inlet communicated with the water inlet channel and a water outlet communicated with the water outlet channel are arranged on the pump body, a backflow channel is arranged between the water inlet channel and the water outlet channel, so that the water inlet channel is communicated with the water outlet channel, a self-priming valve is arranged in the backflow channel, the self-priming valve comprises a valve core and a spring, the valve core comprises a sealing cap and a guide rod arranged at the top end of the sealing cap, a sealing ring is arranged on the outer peripheral surface of the sealing cap, the sealing cap can play a sealing role in the backflow channel, and the spring always has downward elasticity on the sealing cap.
The guide bar matches and sets up in the guiding hole of guide holder, the guide holder is fixed in the pump body, the spring mounting is on the guide bar, and the lower extreme of spring supports on sealed cap, and the upper end supports on the guide holder, the upper end of guide bar is equipped with opening and bulge loop, the external diameter of bulge loop is greater than the aperture of guiding hole, the bulge loop makes the guide bar can not break away from the guiding hole.
The invention has the beneficial effects that:
compared with the prior art, the self-priming structure on the multistage centrifugal pump is provided with the self-priming valve, so that the centrifugal pump has a self-priming function.
Drawings
FIG. 1 is a perspective view of a self-priming structure on a multistage centrifugal pump of the present invention;
FIG. 2 is a structural cross-sectional view of a self-priming structure on the multistage centrifugal pump of the present invention;
fig. 3 is a sectional view of the multistage centrifugal pump having a self-priming structure of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
referring to fig. 1 to 3, the present invention provides a multistage centrifugal pump with a self-priming structure, including a motor 1 and a pump body 2, the pump body 2 is located at the front end of the motor 1, a circuit control device 3 is arranged on the top of the motor 1, the pump body 2 includes a pump shell 4, a multistage impeller 6 arranged in the pump shell 4 and connected to a rotating shaft 5 of the motor 1, a water inlet cover 7 arranged at an inlet position of the multistage impeller 6, and a water outlet cover 8 arranged at an outlet position of the multistage impeller 6, a water inlet channel 9 is formed in the water inlet cover 7, the multistage impeller 6 is located in an impeller chamber, a water outlet channel 10 is formed in the water outlet cover 8, a water inlet 11 communicated with the water inlet channel 9 and a water outlet 12 communicated with the water outlet channel 10 are arranged on the pump body 2, a backflow channel 13 is arranged between the water inlet channel 9 and the water outlet channel 10, so that the water inlet channel 9 is communicated with the, a self-priming valve 14 is arranged in the backflow channel 13, the self-priming valve 14 comprises a valve core 15 and a spring 16, the valve core 15 comprises a sealing cap 17 and a guide rod 18 arranged at the top end of the sealing cap 17, a sealing ring 19 is arranged on the peripheral surface of the sealing cap 17, the sealing cap 17 can play a sealing role on the backflow channel 13, and the spring 16 always has downward elastic force on the sealing cap 17, so that the backflow channel 13 is in an open state.
The guide rod 18 is arranged in a guide hole 21 of the guide seat 20 in a matching mode, the guide seat 20 is fixed in the pump body 2, the spring 16 is installed on the guide rod 18, the lower end of the spring 16 abuts against the sealing cap 17, the upper end of the spring abuts against the guide seat 20, an opening 22 and a convex ring 23 are arranged at the upper end of the guide rod 18, the outer diameter of the convex ring 23 is larger than the aperture of the guide hole 21, and the convex ring 23 enables the guide rod 18 not to be separated from the guide hole 21. During installation, due to the existence of the opening 22 on the guide rod 18, the guide rod 18 has two deformable lobes respectively, so that the guide rod 18 can be smoothly inserted into the guide hole 21, after the guide rod 18 is installed in place, due to the existence of the convex ring 23, the guide rod 18 is matched with the guide hole 21 in place, and the guide rod 18 is not separated from the guide hole 21.
The working principle of the self-priming structure on the multistage centrifugal pump of the present invention is explained as follows:
when the multistage centrifugal pump works, the motor 1 is started, the rotating shaft 5 drives the multistage impeller 6 to rotate, municipal water reaches the water inlet channel 9 through the water inlet 11, reaches the water outlet channel 10 through the pressurization of the multistage impeller 6, and is finally discharged from the water outlet 12. The centrifugal pump which starts to work just begins, the multi-stage impeller 6 mainly exists in a mixture of water and air, when the centrifugal pump reaches the water outlet channel 10, the air is light and the water is heavy, so the air is discharged from the water outlet 12, the water flows into the bottom of the water outlet channel 10, the self-suction valve 14 is in an open state due to the air pressure difference, the water at the bottom of the water outlet channel 10 flows back to the water inlet channel 9 from the return channel 13, the operation is repeated until the air is completely discharged, at the moment, the water outlet channel 10 is full of water and is in a vacuum state, and the self-suction valve 14 is smoothly closed, namely: the suction force is larger than the elastic force of the spring 16 to the valve core 15, and the valve core 15 moves upwards, that is, the guide rod 18 moves upwards along the axial direction of the guide hole 21, so that the sealing cap 17 seals the backflow channel 13, and the multi-stage self-priming pump works in a full-hydraulic mode.
The self-priming structure of the multi-stage centrifugal pump provided by the embodiment of the invention is described in detail, and the principle and the implementation mode of the invention are explained by applying specific examples, and the description of the embodiment is only used for helping to understand the technical scheme disclosed by the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (3)
1. The utility model provides a from inhaling structure on multistage centrifugal pump, includes the motor and the pump body, be equipped with inhalant canal, impeller chamber and exhalant canal in the pump body, and be equipped with the water inlet that link up with inhalant canal on the pump body, the delivery port that link up with exhalant canal, its characterized in that: be equipped with the backward flow passageway between inlet channel and the exhalant canal to make inlet channel link up with the exhalant canal, be equipped with from inhaling the valve in the backward flow passageway, from inhaling the valve and including case and spring, the case includes sealed cap, sets up the guide bar on sealed cap top, sealed cap can play sealed effect to the backward flow passageway, the spring has decurrent elasticity to sealed cap all the time, makes the backward flow passageway be in the open mode.
2. The self-priming structure on a multistage centrifugal pump according to claim 1, wherein: and a sealing ring is arranged on the peripheral surface of the sealing cap.
3. The self-priming structure on a multistage centrifugal pump according to claim 1, wherein: the guide bar matches and sets up in the guiding hole of guide holder, the guide holder is fixed in the pump body, the spring mounting is on the guide bar, and the lower extreme of spring supports on sealed cap, and the upper end supports on the guide holder, the upper end of guide bar is equipped with opening and bulge loop, the external diameter of bulge loop is greater than the aperture of guiding hole, the bulge loop makes the guide bar can not break away from the guiding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180455.1A CN111140512A (en) | 2020-03-16 | 2020-03-16 | Self-priming structure on multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010180455.1A CN111140512A (en) | 2020-03-16 | 2020-03-16 | Self-priming structure on multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140512A true CN111140512A (en) | 2020-05-12 |
Family
ID=70528557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010180455.1A Withdrawn CN111140512A (en) | 2020-03-16 | 2020-03-16 | Self-priming structure on multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876813A (en) * | 2022-05-24 | 2022-08-09 | 江苏芬奇工业设备制造有限公司 | Multistage supercharging device of self priming pump entry |
| NL2028928B1 (en) * | 2021-02-06 | 2022-09-05 | Univ Jiangsu | Multistage centrifugal booster pump |
-
2020
- 2020-03-16 CN CN202010180455.1A patent/CN111140512A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2028928B1 (en) * | 2021-02-06 | 2022-09-05 | Univ Jiangsu | Multistage centrifugal booster pump |
| CN114876813A (en) * | 2022-05-24 | 2022-08-09 | 江苏芬奇工业设备制造有限公司 | Multistage supercharging device of self priming pump entry |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106194840B (en) | Flow passage body structure of garden pump | |
| CN111140512A (en) | Self-priming structure on multistage centrifugal pump | |
| CN111828340B (en) | High-efficiency energy-saving self-suction centrifugal hydraulic system | |
| CN209164106U (en) | Self priming pump | |
| CN206144850U (en) | Runner body structure of garden pump | |
| CN211778031U (en) | Self-priming structure on multistage centrifugal pump | |
| US5474418A (en) | Self-priming centrifugal pump | |
| CN217652915U (en) | Vertical centrifugal pump | |
| CN208546318U (en) | A kind of intelligence multistage jet pump | |
| CN210290083U (en) | Diaphragm water pump with leak-stopping effect | |
| CN210317784U (en) | Jet water pump | |
| CN200943584Y (en) | Differential pressure full-automatic valve of self priming pump | |
| CN211314679U (en) | Automatic liquid pump | |
| CN111022333A (en) | Jet water pump | |
| CN112539197B (en) | Full-automatic adjustable external injection self-priming pump | |
| CN207420831U (en) | A kind of Minitype electric diaphragm pump | |
| CN110966209A (en) | Electric vacuum pump diversion system for pump | |
| CN220620328U (en) | Flush device of embedded closestool | |
| CN216665940U (en) | Self-priming pump with reflux valve | |
| CN209908729U (en) | Novel miniature diaphragm pump with one-way valve | |
| CN212202497U (en) | Integral self-sucking disc for horizontal self-sucking pump | |
| CN216743009U (en) | Miniature water return prevention one-way valve of forest fire pump | |
| CN212202425U (en) | Motor pump with built-in safety valve | |
| CN212202426U (en) | Motor pump with built-in one-way valve | |
| CN219911256U (en) | High-efficiency energy-saving self-priming pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 318050 No. 41 Middle Road, park, fengjiang street, Luqiao District, Taizhou City, Zhejiang Province (Zhejiang rijing Pump Co., Ltd.) Applicant after: ZHEJIANG RIJING PUMP Co.,Ltd. Address before: 333 Xinliu Road, Xinqiao Town, Luqiao District, Taizhou City, Zhejiang Province Applicant before: ZHEJIANG RIJING PUMP Co.,Ltd. |
|
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200512 |