CN219888372U - Composite jet self-priming pump - Google Patents
Composite jet self-priming pump Download PDFInfo
- Publication number
- CN219888372U CN219888372U CN202320054091.1U CN202320054091U CN219888372U CN 219888372 U CN219888372 U CN 219888372U CN 202320054091 U CN202320054091 U CN 202320054091U CN 219888372 U CN219888372 U CN 219888372U
- Authority
- CN
- China
- Prior art keywords
- pump
- throat
- impeller
- pump body
- cavity
- 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.)
- Active
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000037452 priming Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 20
- 230000000694 effects Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a composite jet self-priming pump which comprises a pump body, an impeller and a motor, wherein the pump body is internally provided with a pump cavity, the impeller is arranged in the pump body, the motor is arranged at the rear part of the pump body and used for driving the impeller to rotate, the front part of the pump body is provided with a water inlet, the top of the pump body is provided with a water outlet, a fluid guide body used for dividing the pump cavity into a liquid storage cavity and a pressurizing cavity is arranged in the pump body, the water outlet is communicated with the liquid storage, the impeller is positioned in the pressurizing cavity, a diffuser pipe coaxially arranged with the impeller is fixed at the terminal of the fluid guide body, the diffuser pipe, a second venturi pipe, a first venturi pipe and the pressurizing cavity are communicated, a central nozzle and an annular nozzle which are connected with the first venturi pipe and the second venturi pipe are fixedly arranged in the liquid storage cavity, and the annular nozzle and the central nozzle are coaxial with the second venturi pipe and the first venturi pipe. The utility model has compact structure, simplicity, reliability and small flow loss, effectively ensures the stable operation and applicability of the jet pump in a larger flow range, can improve the efficiency of the jet pump and reduces the cavitation risk of fluid.
Description
Technical Field
The utility model belongs to the technical field of self-priming pumps, and particularly relates to a composite jet self-priming pump.
Background
The jet self-priming pump is formed by combining a centrifugal pump and a jet pump, and compared with the gas-liquid mixed type, water ring wheel type and other self-priming pumps, the jet self-priming pump directly connects an impeller inlet pipeline with the jet pump, integrates the jet pump into a pump body, has good self-priming capability and has higher self-priming height. The jet pump is a kind of conveying machinery and mixed reaction equipment which uses high-speed fluid as working power and sucks and conveys the fluid, and has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, stronger self-priming capability and the like, and is widely applied to the occasions of industry, agriculture, building, household water supply and the like.
The jet pump can be classified into a center jet pump and an annular jet pump according to the positions of the jet pump nozzle and the suction chamber. The nozzle of the central jet pump is arranged at the central axis of the central jet pump, and an annular suction chamber is formed around the nozzle by the throat pipe. The nozzle and suction chamber of the annular jet pump are positioned opposite to the central jet pump, and the nozzle surrounds the throat pipe to form annular jet.
The nozzle jet of the central jet pump has the problems of small jet surface area, large throat pressure drop, easy flow separation and the like, so the jet self-priming pump adopting the central jet pump often has the problems of too high dead point closing lift, narrow high-efficiency area, large flow cavitation and the like.
Disclosure of Invention
The utility model aims to provide a composite jet self-priming pump to solve the problems of low efficiency, narrow high-efficiency area, high flow cavitation and the like of the existing self-priming pump.
The utility model provides the following technical scheme:
the utility model provides a compound efflux self priming pump, includes the inside pump body that has the pump chamber, locates the impeller in the pump body and locates the motor that is used for driving impeller pivoted at pump body rear portion, and the front portion of pump body is equipped with the water inlet, and the top of pump body has the delivery port, is equipped with in the pump body and is used for cutting apart the pump chamber into the water conservancy diversion body in stock solution chamber and booster chamber.
The water outlet is communicated with the liquid storage cavity, the impeller is positioned in the pressurizing cavity, and a diffusion pipe coaxially arranged with the impeller is fixed at the terminal of the flow guide body.
The pressurizing cavity is communicated with the diffusion pipe, the second throat pipe and the first throat pipe in the pump body, and a central nozzle and an annular nozzle which are connected with the first throat pipe and the second throat pipe are fixed in the liquid storage cavity.
The annular nozzle and the central nozzle are coaxial with the second throat pipe and the first throat pipe.
Preferably, the annular nozzle has the same inclination angle as the central nozzle.
Preferably, the diameter of the central nozzle is smaller than the diameter of the first throat.
Preferably, the diameter of the first throat is smaller than the diameter of the second throat.
Preferably, the motor is directly and fixedly connected to the side edge of the pump body, the main shaft of the motor extends into the pressurizing cavity, and the impeller is coaxially fixed on the main shaft of the motor.
Preferably, the inclination angle of the annular nozzle ranges from 0 degrees to 90 degrees, the inclination angle of the diffusion pipe ranges from 4 degrees to 10 degrees, and the inclination angle of the inner wall of the central nozzle ranges from 30 degrees to 90 degrees.
Preferably, the ratio of the first throat diameter to the central nozzle diameter is in the range of 1.5 to 2.5.
Preferably, the ratio of the second throat diameter to the first throat diameter is in the range of 1 to 1.5.
Preferably, the ratio of the first throat length to the first throat diameter is in the range of 1 to 2.
Preferably, the ratio of the second throat length to the second throat diameter is in the range of 1 to 3.
The beneficial effects of the utility model are as follows:
the novel composite jet pump based on the combination of the central jet and the annular jet has the advantages of compact structure, simplicity, reliability and small flow loss, can effectively ensure the stable operation and applicability of the novel composite jet pump in a larger flow range, and can be suitable for occasions such as farmland, garden irrigation and the like with large area.
The contact surface of the high-speed jet flow and the external fluid is the cylindrical surface of the central jet flow and the inner cylindrical surface of the annular jet flow, and both the cylindrical surface and the inner cylindrical surface are compatible, so that the contact area of the high-speed jet flow and the external low-pressure fluid is increased, the jet flow mixing effect is good, the diffusion distribution of the fluid is more uniform, and the efficiency of the jet flow pump can be improved.
Compared with the traditional central jet pump and annular jet pump which are used more at present, the utility model has the advantages of little structural change, little increase of required parts and easy realization, thus the composite jet pump has wider application prospect. Compared with a self-priming pump which singly adopts a central jet pump, the annular jet pump is added, the pump efficiency curve is stable, and the high-efficiency area range of the pump body can be improved. The self-priming pump adopting the central jet pump currently has the problem of high flow cavitation, and when the self-priming pump works, the annular jet pump is combined with the central jet pump, so that the fluid pressure is high, and the cavitation risk of the fluid is greatly reduced.
Drawings
FIG. 1 is a schematic diagram of the present utility model;
fig. 2 is a schematic view of the internal part of the present utility model.
Detailed Description
As shown in fig. 1, the composite jet self-priming pump comprises a pump body 1 with a pump cavity, an impeller 2 arranged in the pump body and a motor 3 arranged at the rear part of the pump body and used for driving the impeller to rotate, wherein a water inlet 4 is arranged at the front part of the pump body, a water outlet 5 is arranged at the top of the pump body, the pump body 1 is internally provided with a fluid guide 8 used for dividing the pump cavity into a liquid storage cavity 6 and a pressurizing cavity 7, the water outlet 5 is communicated with the liquid storage cavity 6, the impeller 2 is positioned in the pressurizing cavity 7, a diffuser 9 coaxially arranged with the impeller 2 is fixed at the terminal end of the fluid guide 8, the pressurizing cavity 7 is communicated with the diffuser 9, the second throat 10 and the first throat 12 in the pump body 1, a central nozzle 13 connected with the first throat 12 and an annular nozzle 11 are fixed in the liquid storage cavity 6, the central nozzle 13 is coaxial with the second throat 10 and the first throat 12, the annular nozzle 11 is identical in inclination with the central nozzle 13, the diameter of the central nozzle 13 is smaller than the second throat 12, and the diameter of the second throat 12 is smaller than the first throat 10. The motor 3 is directly and fixedly connected to the side edge of the pump body, the main shaft of the motor extends into the pressurizing cavity 7, and the impeller is coaxially fixed on the main shaft of the motor.
As shown in fig. 2, in the above-mentioned composite jet self-priming pump, the inclination angle B of the annular nozzle 11 is 0 ° to 90 °, preferably 60 °, the inclination angle C of the diffuser pipe 9 is 4 ° to 10 °, preferably 6 °, and the inclination angle a of the inner wall of the central nozzle 13 is 30 ° to 90 °, preferably 60 °.
In the above-mentioned composite jet self-priming pump, the ratio of the diameter D1 of the first throat 12 to the diameter Dn of the central nozzle 13 is 1.5-2.5, preferably 1.6, and the ratio of the axial length of the diameter D2 of the second throat 10 to the diameter D1 of the first throat 12 is 1-1.5, preferably 1.2.
In the above-described jet-combined flow self-priming pump, the ratio of the length L1 of the first throat 12 to the diameter D1 of the first throat 12 is 1 to 2, preferably 1, and the ratio of the length L2 of the second throat 10 to the diameter D2 of the second throat 10 is 1 to 3, preferably 1.3.
The working process of the utility model comprises the following steps: when the composite jet self-priming pump provided by the utility model is operated, external low-pressure fluid enters the inner cavity of the pump body 1 from the water inlet, the liquid storage cavity 6 and the pressurizing cavity 7 are filled with the external low-pressure fluid through the central nozzle 13, the first throat 12, the annular nozzle 11, the second throat 10 and the diffusion pipe 9, part of high-pressure fluid in the liquid storage cavity 6 forms high-speed jet through the central nozzle 13 and the annular nozzle 11, the high-speed jet and the external low-pressure fluid are mixed in the throat through complex entrainment motion, the external low-pressure fluid is driven to enter the impeller rotating at a high speed, part of the high-pressure fluid flowing into the liquid storage cavity 6 from the diversion body 8 flows out through the water outlet through the pressurizing effect of the impeller and the diversion body 8, and the other part forms jet mixing phenomenon through the central nozzle and the annular nozzle, so that the external low-pressure fluid is continuously driven to enter the impeller to form continuous fluid conveying.
Claims (9)
1. The composite jet self-priming pump comprises a pump body with a pump cavity inside, an impeller arranged in the pump body and a motor arranged at the rear part of the pump body and used for driving the impeller to rotate, and is characterized in that a water inlet is arranged at the front part of the pump body, a water outlet is arranged at the top of the pump body, and a guide body used for dividing the pump cavity into a liquid storage cavity and a pressurizing cavity is arranged in the pump body;
the water outlet is communicated with the liquid storage cavity, the impeller is positioned in the pressurizing cavity, and a diffusion pipe coaxially arranged with the impeller is fixed at the terminal of the flow guide body;
the pressurizing cavity is communicated with a diffusion pipe, a second throat pipe and a first throat pipe in the pump body, and a central nozzle and an annular nozzle which are connected with the first throat pipe and the second throat pipe are fixed in the liquid storage cavity;
the annular nozzle and the central nozzle are coaxial with the second throat pipe and the first throat pipe.
2. The composite jet self-priming pump of claim 1, wherein said annular nozzle is at the same inclination as the central nozzle.
3. The composite jet self-priming pump of claim 2, wherein said central nozzle has a diameter less than a diameter of said first throat.
4. A composite jet self-priming pump according to claim 3, wherein the diameter of said first throat is smaller than the diameter of said second throat.
5. The composite jet self-priming pump according to claim 1, wherein the motor is directly and fixedly connected to the side of the pump body, the main shaft of the motor extends into the pressurizing cavity, and the impeller is coaxially fixed on the main shaft of the motor.
6. The composite jet self-priming pump according to claim 2, wherein the annular nozzle has an inclination angle ranging from 0 ° to 90 °;
the inclination angle range of the diffusion tube is 4-10 degrees;
the inclination angle range of the inner wall of the central nozzle is 30-90 degrees.
7. The composite jet self-priming pump of claim 6, wherein the ratio of the first throat diameter to the central nozzle diameter is in the range of 1.5 to 2.5.
8. The composite jet self-priming pump of claim 7, wherein the ratio of the second throat diameter to the first throat diameter is in the range of 1 to 1.5.
9. A composite jet self priming pump according to any one of claims 1 to 8, wherein the ratio of the first throat length to the first throat diameter is in the range 1 to 2;
the ratio of the second throat length to the second throat diameter is in the range of 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320054091.1U CN219888372U (en) | 2023-01-09 | 2023-01-09 | Composite jet self-priming pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320054091.1U CN219888372U (en) | 2023-01-09 | 2023-01-09 | Composite jet self-priming pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219888372U true CN219888372U (en) | 2023-10-24 |
Family
ID=88403225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320054091.1U Active CN219888372U (en) | 2023-01-09 | 2023-01-09 | Composite jet self-priming pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219888372U (en) |
-
2023
- 2023-01-09 CN CN202320054091.1U patent/CN219888372U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201255119Y (en) | Internally-mixed jet self-priming pump | |
| CN107269544A (en) | A kind of jet pump | |
| CN1740574A (en) | Ejector capable of raising the cavitation performance of centrifugal pump | |
| CN207064252U (en) | A kind of jet pump | |
| US8047806B2 (en) | Jet well pump | |
| WO2018045606A1 (en) | Low-noise, self-priming and composite pump | |
| CN213511231U (en) | Vertical self-priming pump | |
| CN113007100A (en) | Adjustable jet type self-priming centrifugal pump | |
| CN219888372U (en) | Composite jet self-priming pump | |
| CN206071889U (en) | A kind of low noise self-priming combination pump | |
| CN107023490B (en) | Semi-spiral water inlet type double-suction self-sucking pump | |
| CN206636848U (en) | A kind of antidetonation jet pump | |
| CN201502498U (en) | Unit pump of jet pump and vane type pump | |
| CN115573919A (en) | Vertical self-priming pump structure with cavitation and hydraulic performance | |
| CN112096617B (en) | Vertical self-priming pump | |
| CN212615652U (en) | Steam jet pump | |
| CN109654062A (en) | A kind of mixed-flow pump | |
| CN211230950U (en) | Multi-inlet self-priming pump | |
| CN219262801U (en) | Two-stage annular jet self-priming pump | |
| CN112470612A (en) | Municipal afforestation is with energy-saving spray seeder | |
| CN210660548U (en) | Plunger pump | |
| CN216199320U (en) | Oil gas well head falls back pressure device | |
| CN216306240U (en) | Low-lift sewage pump | |
| CN213451033U (en) | Preposition device for improving cavitation performance of water pump | |
| CN115234468B (en) | Pressurized water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |