CN210265304U - Suction-assisted injection pump - Google Patents
Suction-assisted injection pump Download PDFInfo
- Publication number
- CN210265304U CN210265304U CN201920603621.7U CN201920603621U CN210265304U CN 210265304 U CN210265304 U CN 210265304U CN 201920603621 U CN201920603621 U CN 201920603621U CN 210265304 U CN210265304 U CN 210265304U
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- suction chamber
- chamber
- suction
- nozzle
- jet pump
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Abstract
The utility model discloses a help and inhale formula jet pump, it includes nozzle, suction chamber, bolt and mixing chamber. The suction chamber and the mixing chamber are coaxially and hermetically connected by bolts, and the nozzle is positioned and installed in an outward axial through hole of the suction chamber, thereby forming a complete jet pump. In order to further improve the suction performance of the jet pump, the utility model discloses contain the inner chamber design of nozzle cantilever section department with the suction chamber and become the taper shape, because the inner chamber shape rule of this structure, be convenient for further take shape processing with the suction chamber inner chamber that the casting takes shape with the machining mode. In addition, the conical inner cavity of the suction chamber and the conical angle of the outer wall of the cantilever section of the nozzle are equal in size and same in direction, so that a structure with a gradually reduced section is formed, the obstruction is minimum when liquid flows pass through, the gradually pressurized and accelerated liquid flows are favorably formed, and the aim of improving the pump efficiency is fulfilled.
Description
Technical Field
The utility model belongs to a technical scheme of hydraulic machinery product technical field, specifically say, the utility model relates to an injection pump, especially a help and inhale formula injection pump.
Background
The jet pump is composed of nozzle, suction chamber and mixing chamber, which are connected coaxially, and features no rotary part, simple structure, reliable connection and smooth running. The power water source input when the jet pump operates is pressurized and accelerated through the nozzle, and the ejected liquid flow continuously passes through the mixing chamber to form an 'air plug' effect, so that the suction chamber is enabled to generate a low-pressure area or even a negative-pressure area at the suction inlet, the working fluid at the suction inlet of the suction chamber is sucked, and the sucked working fluid enters the mixing chamber along with the high-speed liquid flow ejected by the nozzle. The mixing chamber serves to mix the two streams, to gradually reduce the velocity of the passing stream and to convert it into pressure energy at the outlet with as little loss as possible. The suction chamber of the jet pump belongs to one of key parts influencing the hydraulic performance of the pump, the inner cavity of the suction chamber of the traditional jet pump is spherical or streamline, and the suction chamber with a curved surface structure is difficult to machine, so the suction chamber is generally formed by casting in the industry. Although the mature casting technology can effectively solve the problem of batch production of the suction chamber with a curved surface structure, the casting precision is not high enough, especially the surface of the inner cavity of the suction chamber is relatively rough, and a large liquid flow friction resistance is formed during working, so that the flowing speed of working liquid of the suction inlet of the suction chamber is reduced, and the pump efficiency is difficult to improve.
Disclosure of Invention
The utility model discloses mainly to prior art's not enough, provide a help and inhale formula jet pump, the inner chamber of this pump suction chamber is the taper shape, because inner chamber shape rule can improve the inner wall quality with the help of finish machining technology to showing and reducing the cross-section and long-pending frictional resistance who reduces the inner wall to the liquid stream gradually, being favorable to improving pump efficiency.
The utility model discloses a technical goal is realized to following technical scheme.
The sucking-assistant jet pump includes nozzle, sucking chamber, screw bolt and mixing chamber. The suction chamber and the mixing chamber are coaxially and hermetically connected by bolts, and the nozzle is positioned and installed in an outward axial through hole of the suction chamber. The improvement is that: the inner cavity of the suction chamber containing the cantilever section of the nozzle is designed to be conical, and the conical angle orientation of the inner cavity is consistent with the nozzle orientation after the inner cavity is machined on the surface.
As a further improvement, the conical angle of the conical inner cavity of the suction chamber is equal to the conical angle of the outer wall of the cantilever section of the nozzle.
As a further improvement, the conical inner cavity of the suction chamber is machined to have a surface roughness of at least Ra3.2.
Compared with the prior art, the utility model, following positive effect has:
1. the suction chamber inner chamber is conical, the conical angle orientation and the size of this circular cone are the same with the circular cone of nozzle outer wall, and the surface is smooth moreover, and this structure makes the liquid flow minimum when passing through frictional resistance, is favorable to forming gradually pressure boost and the liquid flow of gradually increasing speed.
2. The inner cavity of the suction chamber is in a cone shape, so that the structure is regular in shape, the quality of the inner wall is improved conveniently by adopting a machining method, the liquid flow friction resistance is obviously reduced, and the pump efficiency is improved.
Drawings
Fig. 1 is a schematic view of the cross-sectional structure of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The booster jet pump shown in fig. 1 comprises a nozzle 1, a suction chamber 2, a bolt 3 and a mixing chamber 4. The suction chamber 2 and the mixing chamber 4 are coaxially butted and then locked by a bolt 3, and the nozzle 1 is positioned and installed in an axial through hole facing outwards of the suction chamber 2, thereby forming a complete jet pump. In order to further improve the suction performance of the jet pump, the utility model discloses contain the inner chamber design taper shape of 1 cantilever section department of nozzle with suction chamber 2, because the inner chamber shape rule of this structure, be convenient for make further forming process with the 2 inner chambers of suction chamber that the casting takes shape with the machining mode. The surface roughness is Ra3.2 at least after the conical inner chamber of suction chamber 2 of this embodiment is machined, and the taper angle of conical inner chamber and the taper angle that the orientation is equal to 1 cantilever section outer wall of nozzle are from this constitutes the structure that the cross-section reduces gradually, and the surface is smooth moreover for frictional resistance is minimum during the liquid stream is through, is favorable to forming gradually pressure boost and gradual fast liquid stream, and this technological effect is favorable to improving pump efficiency, and this embodiment improves pump efficiency 5% than prior art with specification product.
Claims (3)
1. The suction-assisted jet pump comprises a nozzle (1), a suction chamber (2), a bolt (3) and a mixing chamber (4); the suction chamber (2) and the mixing chamber (4) are coaxially and hermetically connected by bolts (3), and the nozzle (1) is positioned and installed in an outward axial through hole of the suction chamber (2); the method is characterized in that: the inner cavity of the suction chamber (2) containing the cantilever section of the nozzle (1) is designed to be conical, and the orientation of the conical angle of the machined surface is consistent with that of the nozzle (1).
2. The suction-assisted jet pump of claim 1, wherein: the conical angle of the conical inner cavity of the suction chamber (2) is equal to the conical angle of the outer wall of the cantilever section of the nozzle (1).
3. The suction-assisted jet pump of claim 1, wherein: the surface roughness of the conical inner cavity of the suction chamber (2) is at least Ra3.2 after machining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603621.7U CN210265304U (en) | 2019-04-29 | 2019-04-29 | Suction-assisted injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920603621.7U CN210265304U (en) | 2019-04-29 | 2019-04-29 | Suction-assisted injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210265304U true CN210265304U (en) | 2020-04-07 |
Family
ID=70023505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920603621.7U Active CN210265304U (en) | 2019-04-29 | 2019-04-29 | Suction-assisted injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210265304U (en) |
-
2019
- 2019-04-29 CN CN201920603621.7U patent/CN210265304U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.9 Jiangyan Avenue, Jiangyan Economic Development Zone, Taizhou City, Jiangsu Province (Jiangsu Zhenhua Haike Equipment Technology Co., Ltd.) Patentee after: Jiangsu Zhenhua Haike Equipment Technology Co., Ltd Address before: 225500 No. 9, Jiangyan Avenue, Jiangyan District, Jiangsu, Taizhou Patentee before: JIANGSU ZHENHUA PUMP MANUFACTURING Co.,Ltd. |