CN210461195U - Low-noise injection pump - Google Patents
Low-noise injection pump Download PDFInfo
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- CN210461195U CN210461195U CN201921487493.0U CN201921487493U CN210461195U CN 210461195 U CN210461195 U CN 210461195U CN 201921487493 U CN201921487493 U CN 201921487493U CN 210461195 U CN210461195 U CN 210461195U
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- honeycomb duct
- water
- pump
- jet pump
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Abstract
The utility model discloses a low noise jet pump, including the pump body, honeycomb duct and play water cover, the honeycomb duct has into water end and goes out the water end, go out the water end and match and install the through-hole department at play water cover center, be equipped with at least one bloop on the honeycomb duct. The utility model discloses a bloop can reduce the negative pressure between the inside and outside of honeycomb duct, when guaranteeing the normal pressure boost work of jet pump, eliminates the noise that cavitation erosion produced.
Description
Technical Field
The utility model relates to a low noise jet pump.
Background
The jet pump achieves the purpose of conveying by utilizing the conversion of energy during the flowing of fluid, and the guide plate mechanism plays an important role in the whole working process of the jet pump.
When the pressure of a liquid is reduced to a vaporization pressure at a certain temperature, bubbles are generated in the liquid, and the phenomenon of generating bubbles is called cavitation. When the pump is in operation, if the absolute pressure of the pumped liquid drops to the vaporization pressure at the temperature of the pump due to some reason in a local area of the overflowing part (usually, a place later than the inlet of the impeller blade), the liquid starts to vaporize at the place, steam is generated, bubbles are formed, the bubbles flow forwards, and when the liquid particles are broken and condensed at a certain high pressure, the liquid particles fill cavities and collide with each other to form water hammer, so that the solid wall of the overflowing part is corroded and damaged, and the process is called as a cavitation process in the pump.
As the pump is cavitated, continuous destruction in a high-pressure area generates strong water hammer, noise and vibration are generated, and the sound of split crack like a popping bean can be heard.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the big technical problem of current jet pump noise.
The utility model provides a technical scheme that above-mentioned technical problem adopted does:
the utility model discloses a low noise jet pump, including the pump body, honeycomb duct and play water cover, the honeycomb duct has into water end and goes out the water end, go out the water end and match and install the through-hole department at play water cover center, be equipped with at least one bloop on the honeycomb duct.
The distance between the center of the silencing hole and the water outlet end of the flow guide pipe is 30-60 mm.
The diameter of the silencing hole is 0.1mm-4.1 mm.
The utility model has the advantages that:
compared with the prior art, the utility model discloses a low noise jet pump, the bloop can reduce the negative pressure in the water conservancy diversion pipe to reduce the emergence of cavitation.
Drawings
FIG. 1 is a perspective view of a nozzle of the low noise jet pump of the present invention;
FIG. 2 is a schematic structural view of a flow guide tube of the low noise injection pump of the present invention;
fig. 3 is a perspective view of the draft tube of the present invention mounted on the water outlet cover.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description:
referring to fig. 1 to 3, the present invention provides a low noise injection pump, which comprises a pump body, a flow guiding pipe 1 and a water outlet cover 2, wherein the flow guiding pipe 1 has a water inlet end 3 and a water outlet end 4, the water outlet end 4 is installed at a through hole at the center of the water outlet cover 2 in a matching manner, the flow guiding pipe 1 with the water outlet cover 2 is integrally disposed in the pump body, and the flow guiding pipe 1 is provided with at least one silencing hole 5.
The distance between the center of the silencing hole 5 and the water outlet end of the draft tube 1 is 30-60 mm. Preferably, the center of the silencing hole 5 reaches the water outlet end of the draft tube 1
The distance between 4 is 30 mm.
The diameter of the silencing hole 5 is 0.1mm-4.1 mm.
Preferably, the diameter of the muffling hole 5 is 1.2 mm.
The utility model discloses a low noise jet pump is the low-pressure area in the honeycomb duct 1, and the internal region of pump outside honeycomb duct 1 is the high-pressure area, and bloop 5 can make honeycomb duct 1's inside and outside negative pressure reduce to reduce the probability that cavitation erosion produced, noise abatement.
Install the utility model discloses a technical data of jet pump of honeycomb duct with bloop is to following table:
table one
Table two
Wherein, the outlet valve in the first table is installed at the water outlet of the jet pump, wherein the position L is the distance between the center of the muffling hole in fig. 2 and the water outlet end of the draft tube; the diameter a in the second table is the diameter of the muffling hole.
From the two tables, when the diameter of the silencing hole 5 is zero, that is, the silencing hole 5 does not exist, or the diameter of the silencing hole 5 is too large, the noise decibel of the injection pump is large under the working conditions of different flow rates and lifts; when the distance between the muffling hole 5 and the water outlet end of the draft tube 1 is 15mm, 45mm or 60mm, the noise decibel generated by the jet pump during working is larger under the working conditions of different flow rates and different delivery lifts.
When the diameter of the silencing hole 5 is 1.2mm and the distance between the silencing hole 5 and the water outlet end of the flow guide pipe 1 is 30mm, the noise decibels generated during the operation of the jet pump are the lowest under the working conditions of different flow rates and different lift.
In summary, the muffling holes 5 with proper diameters are formed in the draft tube 1 to reduce the noise of the jet pump, which is usually generated by cavitation erosion, so we can find that the muffling holes 5 reduce the cavitation erosion of the jet pump.
The low-noise injection pump provided by the embodiment of the present invention is described in detail above, and the principle and the implementation of the present invention are explained herein by applying a specific example, and the description of the above embodiment is only used to help understand the technical solution disclosed by the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (3)
1. The utility model provides a low noise jet pump, includes the pump body, honeycomb duct and goes out the water cover, the honeycomb duct has into water end and goes out the water end, go out the water end and match and install the through-hole department at a water cover center, its characterized in that: the honeycomb duct is provided with at least one silencing hole.
2. A low noise ejector pump according to claim 1, wherein: the distance between the center of the silencing hole and the water outlet end of the flow guide pipe is 30-60 mm.
3. A low noise ejector pump according to claim 1 or 2, wherein: the diameter of the silencing hole is 0.1mm-4.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487493.0U CN210461195U (en) | 2019-09-07 | 2019-09-07 | Low-noise injection pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921487493.0U CN210461195U (en) | 2019-09-07 | 2019-09-07 | Low-noise injection pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210461195U true CN210461195U (en) | 2020-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921487493.0U Active CN210461195U (en) | 2019-09-07 | 2019-09-07 | Low-noise injection pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210461195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439866A (en) * | 2019-09-07 | 2019-11-12 | 浙江日井泵业股份有限公司 | A kind of low noise jet pump |
-
2019
- 2019-09-07 CN CN201921487493.0U patent/CN210461195U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439866A (en) * | 2019-09-07 | 2019-11-12 | 浙江日井泵业股份有限公司 | A kind of low noise jet pump |
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