CN111022333A - Jet water pump - Google Patents
Jet water pump Download PDFInfo
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- CN111022333A CN111022333A CN201910600467.2A CN201910600467A CN111022333A CN 111022333 A CN111022333 A CN 111022333A CN 201910600467 A CN201910600467 A CN 201910600467A CN 111022333 A CN111022333 A CN 111022333A
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- 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
- F04D9/005—Priming of not self-priming pumps by adducting or recycling liquid
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- 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
- F04D15/0027—Varying behaviour or the very pump
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- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
Abstract
The invention belongs to the technical field of water pumps, in particular to a jet water pump which comprises a pump body with a water inlet and a water outlet, wherein a water suction cavity communicated with the water inlet, an impeller cavity used for placing an impeller and a high pressure cavity respectively communicated with the impeller cavity and the water outlet are arranged in the pump body, the water suction cavity is communicated with the impeller cavity through a diffusion channel, the high pressure cavity is communicated with the water suction cavity through a nozzle channel, the nozzle channel corresponds to the diffusion channel in position, and a flow stopping mechanism is arranged on the high pressure cavity or the nozzle channel or the water suction cavity and can block or conduct the liquid flow in the nozzle channel. The invention controls the liquid flow in the nozzle channel through the flow stopping mechanism, and when the pump body finishes self-absorption and can normally work, the flow stopping mechanism stops the liquid flow in the nozzle channel, namely, the liquid in the high-pressure cavity is prevented from flowing into the water absorption cavity to be decompressed, so that the water flow discharged from the water outlet can reach the maximum water pressure.
Description
The technical field is as follows:
the invention belongs to the technical field of water pumps, and particularly relates to an injection water pump.
Background art:
a jet pump is a device that uses a high-speed jet through a nozzle to evacuate gas from a pump body container to obtain a vacuum.
The jet type self-priming centrifugal water pump disclosed in the existing Chinese invention patent (application number: 201110308438.2) has the working principle that: before starting, the water outlet cavity of the pump body is filled with water, and after starting, the impeller rotates at a high speed to pressurize the water in the water outlet cavity, wherein a part of pressure-loaded water is sprayed out at a high speed through the nozzle, and the pressure energy of the water is converted into kinetic energy. The water suction cavity forms a certain negative pressure through high-speed water flow, air and water in the water suction cavity are brought into the diffuser by the high-speed water flow to be mixed under the action of siphon, when the gas-liquid mixed flow reaches the outlet section of the diffuser, the kinetic energy of the gas-liquid mixed flow is converted into pressure energy under the diffusion action of the inner taper hole, the flow rate of the gas-liquid mixed flow is reduced, the pressure of the gas-liquid mixed flow is increased, gas-liquid separation is realized in the pump body after the air is further compressed, the air is discharged through the water outlet of the pump body, the residual water returns to the nozzle under the pressure to be recycled, the residual air in the water suction cavity is sucked and mixed again, and the self-suction can be realized.
However, when the pump body is self-priming and in normal operation, part of the pressurized water still flows into the water suction cavity from the water outlet cavity through the nozzle, so that the water pressure in the water outlet cavity is relieved, and the water flow discharged from the water outlet can never reach the maximum water pressure, which directly affects the working performance of the water pump.
The invention content is as follows:
the invention aims to provide a jet water pump which can reach the maximum water pressure of water flow discharged from a water outlet when in normal operation.
The invention is realized by the following steps:
a water injection pump comprises a pump body with a water inlet and a water outlet, wherein a water suction cavity communicated with the water inlet, an impeller cavity used for placing an impeller and a high-pressure cavity communicated with the impeller cavity and the water outlet respectively are arranged in the pump body, the water suction cavity is communicated with the impeller cavity through a diffusion channel, the high-pressure cavity is communicated with the water suction cavity through a nozzle channel, the nozzle channel corresponds to the diffusion channel in position, and a flow stopping mechanism is arranged on the high-pressure cavity, the nozzle channel or the water suction cavity and can block or conduct liquid flow in the nozzle channel.
In an above-mentioned injection water pump, the flow stopping mechanism is including setting up the mounting hole that just communicates high-pressure chamber and external on the pump body, and the axis of mounting hole and the axis of nozzle passageway are located same straight line, have the axostylus axostyle through threaded connection in the mounting hole, and the outer end of axostylus axostyle outwards extends outside the pump body, the inner inwards extends to within the high-pressure chamber and is provided with the plunger body with nozzle passageway looks adaptation, rotates the axial of axostylus axostyle along the mounting hole and inwards twists, and then drives the plunger body and nozzle passageway plunger sealed.
In the above-mentioned injection water pump, the mounting hole is including internal thread section and plain noodles section, be provided with the external screw thread with internal thread section threaded connection on the axostylus axostyle, be provided with annular groove on the axostylus axostyle that is located the plain noodles section, the cover is equipped with the sealing ring on the annular groove, and the external diameter of sealing ring is more than or equal to the internal diameter of plain noodles section.
In the above-mentioned injection water pump, the plug-in connection hole has been seted up along its axis on the terminal surface of plunger body near the axostylus axostyle, has seted up the through-hole on the bottom surface of plug-in connection hole, and the inner of axostylus axostyle is inserted and is established in the plug-in connection hole, and the plunger body passes the inner terminal surface fixed connection of through-hole and axostylus axost.
In the above injection water pump, a connection port for connecting the high-pressure chamber with the outside is formed in the pump body, and a pressure gauge for detecting the liquid pressure in the high-pressure chamber is arranged at the connection port;
or a pressure sensor for detecting the pressure of the liquid is arranged in the high-pressure chamber.
In the above injection water pump, the water suction chamber is further communicated with the impeller chamber through a flow increasing channel, a one-way mechanism for conducting or blocking liquid flow in the flow increasing channel is arranged in the flow increasing channel, and the one-way mechanism conducts the flow increasing channel when the liquid pressure of the water suction chamber is greater than the liquid pressure of the impeller chamber; when the liquid pressure of the water suction chamber is lower than that of the impeller chamber, the flow increasing channel is blocked by the one-way mechanism.
In the above injection water pump, the diffusion passage sequentially includes a contraction section with a gradually decreasing aperture, a throat section with a constant aperture, and a diffusion section with a gradually increasing aperture from the water suction chamber to the impeller chamber, the flow-increasing passage is of a chamber structure, the flow-increasing passage is communicated with the water suction chamber through a flow-increasing inlet, and the flow-increasing passage is communicated with the diffusion section through a flow-increasing outlet.
In the above-mentioned injection water pump, the one-way mechanism includes the blocking plate that can elastically deform, and one end of blocking plate is the stiff end of fixed connection on the cavity lateral wall of flow increasing channel, and the other end supports for the side and leans on and covers the free end on the corresponding port of flow increasing import.
In the above-mentioned injection water pump, the one-way mechanism further comprises a sealing sleeve, an annular clamping groove is formed in the wall of the sealing sleeve, the sealing sleeve is clamped and sleeved in the flow increasing inlet through the annular clamping groove, and the side face of the free end of the blocking plate abuts against and covers the corresponding port of the sealing sleeve.
In the above-mentioned injection water pump, be provided with the runner casing that has water absorption cavity and diffusion channel on the pump body, the cover is equipped with the casing that increases the class on the lateral wall of runner casing, forms between the lateral wall of runner casing and the inside wall of the casing that increases the class passageway that increases, be located to be provided with spacing projection on the lateral wall of the runner casing in the channel that increases class, be provided with the spacing barrel with spacing projection looks adaptation on the inside wall of the casing that increases the class, spacing projection runs through the stiff end of baffler and plug in the hole of spacing barrel, and the stiff end both sides face of baffler respectively with the lateral wall of runner casing, the terminal surface counterbalance of spacing barrel.
Compared with the prior art, the invention has the outstanding advantages that:
1. the flow stopping mechanism controls the liquid flow in the nozzle channel, and when the pump body finishes self-absorption and can normally work, the flow stopping mechanism blocks the liquid flow in the nozzle channel, so that the high-pressure chamber is isolated from the water suction chamber and is not communicated with the water suction chamber, namely, the liquid in the high-pressure chamber is prevented from flowing into the water suction chamber to be decompressed, the water flow discharged from the water outlet can reach the maximum water pressure, and the working performance of the self-priming water pump can reach the best;
2. the pump body structure design is reasonably improved, the flow increasing channel is additionally arranged between the water inlet cavity and the pressurizing cavity, and the conduction or the blocking of the liquid flow in the flow increasing channel is controlled by the aid of the one-way check mechanism according to the pressure change between the pressurizing cavity and the water inlet cavity in the pump body, so that a curve relation graph of the flow rate and the lift of the water pump is optimized, and the performance of the water pump is obviously improved.
Description of the drawings:
FIG. 1 is an overall cross-sectional view of the present invention;
FIG. 2 is a partial enlarged view A of FIG. 1;
FIG. 3 is a sectional view of a pump body portion of the present invention;
FIG. 4 is a perspective view of the shaft of the present invention;
FIG. 5 is a cross-sectional view of a mating connection between the flow channel housing and the flow sleeve housing of the present invention;
fig. 6 is an exploded view of the mating connection between the flow channel housing and the flow-increasing casing of the present invention.
In the figure: 1. a pump body; 2. a water inlet; 3. a water outlet; 4. a water-absorbing chamber; 5. an impeller chamber; 6. a high pressure chamber; 7. a diffuser channel; 8. a nozzle channel; 9. mounting holes; 10. a shaft lever; 11. a plunger body; 12. an internal thread section; 13. a smooth surface section; 14. an external thread; 15. an annular groove; 16. a seal ring; 17. a fastener; 18. a connecting port; 19. a flow increasing channel; 20. a contraction section; 21. a throat section; 22. a diffuser section; 23. a flow increasing inlet; 24. a flow increasing outlet; 25. a barrier plate; 26. a sealing sleeve; 27. an annular neck; 28. a flow passage housing; 29. a flow-increasing casing; 30. a limiting convex column; 31. a limiting cylinder body; 32. a knob.
The specific implementation mode is as follows:
the invention will now be further described by way of specific examples, with reference to figures 1 to 6:
a jet water pump comprises a pump body 1 with a water inlet 2 and a water outlet 3, wherein a water suction cavity 4 communicated with the water inlet 2, an impeller cavity 5 used for placing an impeller and a high-pressure cavity 6 respectively communicated with the impeller cavity 5 and the water outlet 3 are arranged in the pump body 1, the water suction cavity 4 is communicated with the impeller cavity 5 through a diffusion channel 7, the high-pressure cavity 6 is communicated with the water suction cavity 4 through a nozzle channel 8, the position of the nozzle channel 8 corresponds to that of the diffusion channel 7, and a flow stopping mechanism is arranged on the high-pressure cavity 6 or the nozzle channel 8 or the water suction cavity 4 and can block or conduct liquid flow in the nozzle channel 8.
The invention controls the liquid flow in the nozzle channel 8 through the flow stopping mechanism, when the pump body 1 finishes self-absorption and can normally work, the flow stopping mechanism blocks the liquid flow in the nozzle channel 8, and the high-pressure chamber 6 is isolated and not communicated with the water suction chamber 4, namely, the liquid in the high-pressure chamber 6 is prevented from flowing into the water suction chamber 4 to be decompressed, so that the water flow discharged from the water outlet 3 can reach the maximum water pressure, and the working performance of the invention is further optimal.
In this embodiment, the flow stopping mechanism is specifically implemented as follows: the flow stopping mechanism comprises a mounting hole 9 which is arranged on the pump body 1 and communicated with the high-pressure chamber 6 and the outside, the axis of the mounting hole 9 and the axis of the nozzle channel 8 are positioned on the same straight line, a shaft rod 10 is connected in the mounting hole 9 through threads, the outer end of the shaft rod 10 extends outwards to the outside of the pump body 1, the inner end extends inwards to the inside of the high-pressure chamber 6 and is provided with a plunger body 11 matched with the nozzle channel 8, and the shaft rod 10 is rotated to be screwed inwards along the axial direction of the mounting hole 9 so as to drive the plunger body 11 to be sealed with the plunger of the nozzle channel 8. In order to facilitate the rotation of the shaft 10, the knob 32 is provided at the outer end of the shaft 10. Meanwhile, the shaft rod 10 can be connected in the mounting hole 9 in a sliding mode, the outer end of the shaft rod 10 is in transmission connection with a telescopic rod of the driving cylinder, and the driving cylinder drives the shaft rod 10 to slide inwards along the axial direction of the shaft rod 10 so as to drive the plunger body 11 to be sealed with the plunger of the nozzle channel 8.
In addition, the flow stopping mechanism may adopt another embodiment: the flow stopping mechanism comprises an electromagnetic valve arranged in the nozzle channel 8, and the control unit controls the opening or closing of the electromagnetic valve so as to realize the conduction or the blockage of the liquid flow in the nozzle channel 8.
Furthermore, in order to improve the sealing performance between the shaft rod 10 and the mounting hole 9 and prevent the liquid in the high-pressure chamber 6 from leaking from the gap between the mounting hole 9 and the shaft rod 10, the mounting hole 9 includes an internal thread section 12 and a smooth surface section 13, an external thread 14 in threaded connection with the internal thread section 12 is arranged on the shaft rod 10, an annular groove 15 is arranged on the shaft rod 10 in the smooth surface section 13, a sealing ring 16 is sleeved on the annular groove 15, and the outer diameter of the sealing ring 16 is greater than or equal to the inner diameter of the smooth surface section 13.
Meanwhile, due to the difference in hydraulic pressure between the high pressure chamber 6 and the suction chamber, during the self-priming process of the present invention, the liquid in the high pressure chamber 6 will be ejected from the nozzle passage 8 into the suction chamber at a relatively rapid flow rate. Therefore, the connection between the plunger body 11 and the inner end of the shaft 10 needs to have better firmness to avoid the influence of the flow rate of the liquid in the high-pressure chamber 6, and the specific connection mode between the plunger body 11 and the shaft 10 is as follows: the end face, close to the shaft lever 10, of the plunger body 11 is provided with an inserting hole along the axis of the plunger body, the bottom surface of the inserting hole is provided with a through hole, the inner end of the shaft lever 10 is inserted into the inserting hole, and the plunger body 11 penetrates through the through hole through a fastener 17 to be fixedly connected with the end face of the inner end of the shaft lever 10.
In order to facilitate letting the user in time know the pump body 1 and accomplish from inhaling, set up the connector 18 of intercommunication high pressure cavity 6 and external on the pump body 1, connector 18 department is provided with the pressure gauge that is used for detecting the interior liquid pressure size of high pressure cavity 6, through observing the interior liquid water pressure numerical value of high pressure cavity 6 that the pressure gauge shows, judges whether the pump body 1 has accomplished from inhaling to the user can in time control the flow stopping mechanism and block liquid flow in the nozzle passageway 8, effectively improves the work efficiency of the pump body 1, wherein this embodiment pressure gauge adopts the floater formula pressure gauge. Meanwhile, another setting mode can also be adopted: be provided with the pressure sensor who is used for detecting the liquid pressure size in the high pressure cavity 6, through the liquid pressure in the pressure sensor direct detection high pressure cavity 6 to in will detecting information transmission to the control unit, show concrete detection numerical value through the display screen that sets up in the pump body 1 outside by the control unit.
As a characteristic curve for measuring the performance of the water pump: the water pump has a relationship curve of the lift and the flow, the lift and the flow of the water pump are in an inverse relationship under the condition that the output power of the water pump is kept unchanged, and the higher the lift is, the smaller the flow is; the lower the head, the greater the flow. The flow of the water pump is limited by the caliber of the port of the diffusion channel 7 close to the suction chamber, therefore, in order to improve the performance of the water pump, the structural design of the pump body 1 is reasonably improved, the suction chamber 4 is communicated with the impeller chamber 5 through the flow increasing channel 19, a one-way mechanism for conducting or blocking the flow of liquid in the flow increasing channel 19 is arranged in the flow increasing channel 19, when the liquid pressure of the suction chamber 4 is greater than that of the impeller chamber 5, which represents that the working state of the invention needs low lift and large flow, the one-way mechanism conducts the flow increasing channel 19, the flow of the suction chamber 4 flowing into the impeller chamber 5 is increased through the flow increasing channel 19, the caliber of the port of the diffusion channel 7 close to the suction chamber 4 is equivalently expanded, and the upper limit value of the flow of the water pump is effectively increased; when the liquid pressure of the water suction cavity 4 is lower than that of the impeller cavity 5, which represents the working state of the invention requiring high lift and small flow, the one-way mechanism blocks the flow increasing channel 19.
Furthermore, the diffusion passage 7 sequentially comprises a contraction section 20 with a gradually reduced caliber, a throat section 21 with a constant caliber and a diffusion section 22 with a gradually increased caliber from the water suction cavity 4 to the impeller cavity 5, the flow increasing passage 19 is of a cavity structure, the flow increasing passage 19 is communicated with the water suction cavity 4 through a flow increasing inlet 23, and the flow increasing passage 19 is communicated with the diffusion section 22 through a flow increasing outlet 24. The diameter of the contraction section 20 is gradually reduced to convert the pressure energy of the liquid into kinetic energy, the contraction section 20 is mainly applied to the self-priming process of the pump body 1, and the contraction section 20 is matched with the throat section 21 to enable the liquid to be fully mixed with the residual air. The gradually increased caliber of the diffuser section 22 can convert the kinetic energy of the liquid into pressure energy, and then the pressure energy is pressurized by the impeller in the impeller chamber 5 to form high-pressure liquid.
In this embodiment, the one-way mechanism is specifically implemented as follows: the one-way mechanism comprises an elastically deformable blocking plate 25, and the blocking plate 25 is an elastically deformable stainless steel plate; the baffle 25 has one end fixed to the chamber sidewall of the flow-increasing channel 19 and the other end free to abut laterally against and cover the corresponding port of the flow-increasing inlet 23. The elastic force of the blocking plate 25 properly changes the threshold value of the one-way mechanism, further optimizes the curve relation graph of the water pump flow and the lift, improves the performance of the water pump, and can realize the adjustment of the threshold value of the one-way mechanism by replacing the blocking plates 25 with different elastic force specifications according to actual requirements. In addition, the one-way mechanism may also adopt other one-way structures, such as a floating ball type one-way structure in which a floating ball is matched with a spring, or a plunger type one-way structure in which the plunger body 11 is matched with a spring, or an electromagnetic valve controlled by the control unit.
In order to ensure the sealing performance between the blocking plate 25 and the flow increasing inlet 23, the one-way mechanism further comprises a sealing sleeve 26, an annular clamping groove 27 is arranged on the cylinder wall of the sealing sleeve 26, the sealing sleeve 26 is clamped and sleeved in the flow increasing inlet 23 through the annular clamping groove 27, and the free end side face of the blocking plate 25 abuts against and covers a corresponding port of the sealing sleeve 26.
Furthermore, in the present embodiment, the specific arrangement of the flow increasing channel 19 and the specific connection between the blocking plate 25 and the flow increasing channel 19 are as follows: the pump body 1 is provided with a flow passage shell 28 with a water absorption chamber 4 and a diffusion passage, the outer side wall of the flow passage shell 28 is sleeved with a flow increasing casing 29, the flow increasing passage 19 is formed between the outer side wall of the flow passage shell 28 and the inner side wall of the flow increasing casing 29, the outer side wall of the flow passage shell 28 positioned in the flow increasing passage 19 is provided with a limiting convex column 30, the inner side wall of the flow increasing casing 29 is provided with a limiting cylinder 31 matched with the limiting convex column 30, the limiting convex column 30 penetrates through the fixed end of the barrier plate 25 and is inserted into the inner hole of the limiting cylinder 31, and two side faces of the fixed end of the barrier plate 25 abut against the outer side wall of the flow passage shell 28 and the end face of the.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. The utility model provides a jet water pump, including pump body (1) that has water inlet (2) and delivery port (3), be provided with in the pump body (1) and absorb water cavity (4) that are linked together with water inlet (2), an impeller chamber (5) for placing the impeller, and respectively with impeller chamber (5), high-pressure chamber (6) that delivery port (3) are linked together, through diffusion passageway (7) intercommunication between absorb water cavity (4) and impeller chamber (5), through nozzle passageway (8) intercommunication between high-pressure chamber (6) and the chamber (4) that absorbs water, and nozzle passageway (8) are corresponding with the position of diffusion passageway (7), its characterized in that: and a flow stopping mechanism is arranged on the high-pressure chamber (6) or the nozzle channel (8) or the water absorption chamber (4), and can block or conduct the liquid flow in the nozzle channel (8).
2. The injection water pump of claim 1, wherein: the flow stopping mechanism comprises a mounting hole (9) which is arranged on a pump body (1) and communicated with a high-pressure chamber (6) and the outside, the axis of the mounting hole (9) and the axis of a nozzle channel (8) are positioned on the same straight line, a shaft rod (10) is connected in the mounting hole (9) through threads, the outer end of the shaft rod (10) extends outwards to the outside of the pump body (1), the inner end extends inwards into the high-pressure chamber (6) and is provided with a plunger body (11) matched with the nozzle channel (8), and the rotating shaft rod (10) is screwed inwards along the axial direction of the mounting hole (9) to further drive the plunger body (11) to be sealed with the plunger of the nozzle channel (8).
3. The injection water pump of claim 2, wherein: the mounting hole (9) comprises an internal thread section (12) and a smooth surface section (13), an external thread (14) in threaded connection with the internal thread section (12) is arranged on the shaft lever (10), an annular groove (15) is arranged on the shaft lever (10) located in the smooth surface section (13), a sealing ring (16) is sleeved on the annular groove (15), and the outer diameter of the sealing ring (16) is larger than or equal to the inner diameter of the smooth surface section (13).
4. The injection water pump of claim 2, wherein: the plunger piston is characterized in that an inserting hole is formed in the end face, close to the shaft rod (10), of the plunger piston body (11) along the axis of the plunger piston, a through hole is formed in the bottom face of the inserting hole, the inner end of the shaft rod (10) is inserted into the inserting hole, and the plunger piston body (11) penetrates through the through hole through a fastener (17) to be fixedly connected with the end face of the inner end of the shaft rod (10).
5. The injection water pump of claim 1, wherein: a connecting port (18) for communicating the high-pressure chamber (6) with the outside is formed in the pump body (1), and a pressure gauge for detecting the pressure of liquid in the high-pressure chamber (6) is arranged at the connecting port (18);
or a pressure sensor for detecting the pressure of the liquid is arranged in the high-pressure chamber (6).
6. The injection water pump of claim 1, wherein: the water absorption chamber (4) is communicated with the impeller chamber (5) through a flow increasing channel (19), a one-way mechanism for conducting or blocking liquid flow in the flow increasing channel (19) is arranged in the flow increasing channel (19), and the one-way mechanism conducts the flow increasing channel (19) when the liquid pressure of the water absorption chamber (4) is higher than the liquid pressure of the impeller chamber (5); when the liquid pressure of the water absorption chamber (4) is lower than the liquid pressure of the impeller chamber (5), the flow increasing channel (19) is blocked by the one-way mechanism.
7. The injection water pump of claim 6, wherein: the diffusion channel (7) sequentially comprises a contraction section (20) with the gradually-reduced caliber, a throat section (21) with the unchanged caliber and a diffusion section (22) with the gradually-increased caliber from the water suction cavity (4) to the impeller cavity (5), the flow increasing channel (19) is of a cavity structure, the flow increasing channel (19) is communicated with the water suction cavity (4) through a flow increasing inlet (23), and the flow increasing channel (19) is communicated with the diffusion section (22) through a flow increasing outlet (24).
8. The injection water pump of claim 7, wherein: the one-way mechanism comprises an elastically deformable blocking plate (25), one end of the blocking plate (25) is a fixed end fixedly connected to the side wall of the chamber of the flow increasing channel (19), and the other end of the blocking plate abuts against and covers a free end of a corresponding port of the flow increasing inlet (23) through the side face.
9. The injection water pump of claim 8, wherein: the one-way mechanism further comprises a sealing sleeve (26), an annular clamping groove (27) is formed in the cylinder wall of the sealing sleeve (26), the sealing sleeve (26) is clamped and sleeved in the flow increasing inlet (23) through the annular clamping groove (27), and the side face of the free end of the blocking plate (25) abuts against and covers the corresponding port of the sealing sleeve (26).
10. The injection water pump of claim 8, wherein: the pump body (1) is provided with a flow channel shell (28) with a water absorption cavity (4) and a diffusion channel, the outer side wall of the flow channel shell (28) is sleeved with a flow increasing casing (29), the outer side wall of the flow channel shell (28) and the inner side wall of the flow increasing casing (29) form a flow increasing channel (19), the outer side wall of the flow channel shell (28) in the flow increasing channel (19) is provided with a limiting convex column (30), the inner side wall of the flow increasing casing (29) is provided with a limiting barrel (31) matched with the limiting convex column (30), the fixed end of the limiting convex column (30) penetrating through a blocking plate (25) is inserted into an inner hole of the limiting barrel (31), and the fixed end of the blocking plate (25) abuts against the outer side wall of the flow channel shell (28) and the end face of the limiting barrel (31) respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600467.2A CN111022333A (en) | 2019-07-04 | 2019-07-04 | Jet water pump |
| PCT/CN2019/102796 WO2021000402A1 (en) | 2019-07-04 | 2019-08-27 | Jet water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910600467.2A CN111022333A (en) | 2019-07-04 | 2019-07-04 | Jet water pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111022333A true CN111022333A (en) | 2020-04-17 |
Family
ID=70199950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910600467.2A Pending CN111022333A (en) | 2019-07-04 | 2019-07-04 | Jet water pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111022333A (en) |
| WO (1) | WO2021000402A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236276A1 (en) * | 2022-06-09 | 2023-12-14 | 宁波君禾智能科技有限公司 | Self-priming jet pump |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732293A (en) * | 1952-05-12 | 1955-06-22 | Jacuzzi Brothers Inc | Improvements in or relating to self-priming pump systems, particularly for deep wells |
| JPS51111905A (en) * | 1975-03-26 | 1976-10-02 | Hitachi Ltd | Combined volute-jet pump |
| CN201141358Y (en) * | 2007-11-15 | 2008-10-29 | 陈江枫 | Supercharging high-lift clean water pump of blade self-suction jet pipe |
| CN201521456U (en) * | 2009-11-05 | 2010-07-07 | 钟新军 | Spraying/self-priming water pump |
| CN102562604A (en) * | 2011-12-22 | 2012-07-11 | 安徽江南泵阀有限公司 | High-performance strong-corrosion-resistant self-sucking pump |
| CN205977708U (en) * | 2016-08-29 | 2017-02-22 | 浙江人民泵业有限公司 | Injection formula is from inhaling charge pump |
-
2019
- 2019-07-04 CN CN201910600467.2A patent/CN111022333A/en active Pending
- 2019-08-27 WO PCT/CN2019/102796 patent/WO2021000402A1/en active Application Filing
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023236276A1 (en) * | 2022-06-09 | 2023-12-14 | 宁波君禾智能科技有限公司 | Self-priming jet pump |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021000402A1 (en) | 2021-01-07 |
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