CN204402877U - A kind of de-noising gear pump - Google Patents
A kind of de-noising gear pump Download PDFInfo
- Publication number
- CN204402877U CN204402877U CN201420802857.0U CN201420802857U CN204402877U CN 204402877 U CN204402877 U CN 204402877U CN 201420802857 U CN201420802857 U CN 201420802857U CN 204402877 U CN204402877 U CN 204402877U
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- CN
- China
- Prior art keywords
- gear pump
- damping
- gear
- slideway
- alloy
- 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.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a kind of de-noising gear pump, comprises gear pump case, is provided with base in the below of gear pump case, and described base is provided with slideway, is provided with in the upper end of slideway and the bottom of gear pump case the cotton that absorbs sound; The bottom of described slideway is provided with two pieces of damping alloys, and damping alloy offers damping hole.The utility model structure is simple, reasonable in design, cotton by being provided with sound absorption, absorb noise, by being provided with one block of damping Al-Zn alloy in the slideway between gear pump and base, because damping alloy inside exists certain movable district, when it is subject to the effect of noise generation, in alloy, friction will cause oscillation hysteresis loss effect, vibrational energy is made to be converted into potential energy and to dissipate, therefore, it is possible to greatly reduce noise.
Description
Technical field
The utility model relates to pump field, refers in particular to a kind of de-noising gear pump.
Background technique
Gear pump is a kind of is the device of hydraulic energy by changes mechanical energy, and it provides the liquid with certain pressure and flow for hydraulic system, is the important component part of hydraulic system.Gear pump relies on the swept volume formed between pumping cylinder and engaging gear to change and the mobile rotary pump carried liquid or make it supercharging, it forms two enclosed spaces by two gears, the pump housing and front and rear covers, when pinion rotation, the volume in space of side of being out of gear is large from little change, form vacuum, sucked by liquid, liquid from diminishing greatly, and is clamp-oned in pipeline and is gone gear pump structurally can be divided into the large class of outer gearing and internal messing two by the volume in the space of gears meshing side.The gear pump of present use is due to a variety of causes, and there is vibration excessive, the phenomenon that noise is excessive, this just certainly will bring greater impact the stability of the working life of oil hydraulic pump and system.The main cause that gear pump produces noise has: pumping flow pulsation causes noise, and this is the power source causing pump to vibrate: because flow pulsation can cause pressure pulsation, and pressure pulsation is the power source of pump vibration; Because entrap phenomenon build-up of pressure impacts or cavitation erosion, thus produce noise; Because the manufacture of gear and installation exist error, when gear motion, noise can be produced because tooth collision.Current method cannot reduce the noise that gear pump produces in running significantly, affects the working life of gear pump.
Model utility content
The utility model, in order to overcome deficiency of the prior art, provides a kind of de-noising gear pump, can reduce noise, improves the usability of gear pump.
The utility model is achieved through the following technical solutions:
A kind of de-noising gear pump, comprise gear pump case, be provided with base in the below of gear pump case, described base is provided with slideway, is provided with in the upper end of slideway and the bottom of gear pump case the cotton that absorbs sound; The bottom of described slideway is provided with two pieces of damping alloys, and damping alloy offers damping hole.
As optimal technical scheme of the present utility model, described damping alloy is Al-Zn alloy.
As optimal technical scheme of the present utility model, described gear pump case is provided with liquid entering hole and liquid outlet, is provided with transmission shaft I and transmission shaft II, transmission shaft I is provided with gear I, transmission shaft II is provided with gear II in described gear pump case.
As optimal technical scheme of the present utility model, described gear I is arranged on transmission shaft I by spline, and described gear II is arranged on transmission shaft II by spline, and the velocity ratio of described gear I and gear II is 1.
Compared with prior art, the beneficial effects of the utility model are: the utility model structure is simple, reasonable in design, cotton by being provided with sound absorption, absorb noise, by being provided with one block of damping Al-Zn alloy in the slideway between gear pump and base, because damping alloy inside exists certain movable district, when it is subject to the effect of noise generation, in alloy, friction will cause oscillation hysteresis loss effect, make vibrational energy be converted into potential energy and dissipate, therefore, it is possible to greatly reduce noise.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-gear pump case; 2-liquid entering hole; 3-liquid outlet; 4-transmission shaft I; 5-transmission shaft II; 6-gear I; 7-gear II; 8-base; 9-slideway; 10-absorbs sound cotton; 11-damping alloy; 12-damping hole.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of de-noising gear pump, comprise gear pump case 1, described gear pump case 1 is provided with liquid entering hole 2 and liquid outlet 3, transmission shaft I 4 and transmission shaft II 5 are installed in described gear pump case 1, transmission shaft I 4 is provided with gear I 6, transmission shaft II 5 is provided with gear II 7, described gear I 6 is arranged on transmission shaft I 4 by spline, described gear II 7 is arranged on transmission shaft II 5 by spline, and the velocity ratio of described gear I and gear II is 1.By adopt a pair velocity ratio be 1 gear drive, between gear pump case 1, biside plate and two gears, define A, B chamber, gear I 6 is rotated counterclockwise, gear II 7 turns clockwise, and A chamber volume becomes large gradually, forms parital vacuum, for imbibition chamber, suck liquid; B chamber volume diminishes gradually, forms exhaust chamber, is discharged by liquid.
Be provided with base 8 in the below of gear pump case 1, described base 8 is provided with slideway 9, is provided with in the bottom of the upper end of slideway 9 and gear pump case 1 cotton 10 that absorbs sound; By being provided with sound absorption cotton 10, noise can be absorbed.
The bottom of described slideway 9 is provided with two pieces of damping alloys 11, and described damping alloy 11 is Al-Zn alloy, and damping alloy 11 offers damping hole 12.By being provided with one block of damping Al-Zn alloy in the slideway between gear pump and base, because damping alloy inside exists certain movable district, when it is subject to the effect of noise generation, in alloy, friction will cause oscillation hysteresis loss effect, vibrational energy is made to be converted into potential energy and to dissipate, therefore, it is possible to greatly reduce noise.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (4)
1. a de-noising gear pump, comprise gear pump case (1), in the below of gear pump case (1), base (8) is installed, it is characterized in that: described base (8) is provided with slideway (9), be provided with absorb sound cotton (10) in the bottom of the upper end of slideway (9) and gear pump case (1); The bottom of described slideway (9) is provided with two pieces of damping alloys (11), and damping alloy (11) offers damping hole (12).
2. a kind of de-noising gear pump according to claim 1, is characterized in that: described damping alloy (11) is Al-Zn alloy.
3. a kind of de-noising gear pump according to claim 1, it is characterized in that: described gear pump case (1) is provided with liquid entering hole (2) and liquid outlet (3), transmission shaft I (4) and transmission shaft II (5) are installed in described gear pump case (1), transmission shaft I (4) is provided with gear I (6), transmission shaft II (5) is provided with gear II (7).
4. a kind of de-noising gear pump according to claim 3, is characterized in that: described gear I (6) is arranged on transmission shaft I (4) by spline, and described gear II (7) is arranged on transmission shaft II (5) by spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802857.0U CN204402877U (en) | 2014-12-18 | 2014-12-18 | A kind of de-noising gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420802857.0U CN204402877U (en) | 2014-12-18 | 2014-12-18 | A kind of de-noising gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204402877U true CN204402877U (en) | 2015-06-17 |
Family
ID=53426743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420802857.0U Expired - Fee Related CN204402877U (en) | 2014-12-18 | 2014-12-18 | A kind of de-noising gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204402877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202344A (en) * | 2015-10-21 | 2015-12-30 | 无锡惠山泵业有限公司 | Oil pump with strong leak tightness |
-
2014
- 2014-12-18 CN CN201420802857.0U patent/CN204402877U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105202344A (en) * | 2015-10-21 | 2015-12-30 | 无锡惠山泵业有限公司 | Oil pump with strong leak tightness |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20151218 |
|
| EXPY | Termination of patent right or utility model |