CN2042121U - Low-pulsation and low-noise gear pump - Google Patents
Low-pulsation and low-noise gear pump Download PDFInfo
- Publication number
- CN2042121U CN2042121U CN 88214667 CN88214667U CN2042121U CN 2042121 U CN2042121 U CN 2042121U CN 88214667 CN88214667 CN 88214667 CN 88214667 U CN88214667 U CN 88214667U CN 2042121 U CN2042121 U CN 2042121U
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- China
- Prior art keywords
- gear pump
- low
- pulsation
- gear
- utility
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- 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.)
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- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a low-pulsation and low-noise gear pump which belongs to the improvement of the existing gear pump, in particular to the improvement of the CB-B series gear pump used in a machine tool. A couple of original gear wheels is divided into two couples of gear wheels; the two gear wheels which are arranged on the same shaft are staggered 1/2 p-[b], and then a partition plate is arranged between the two gear wheels; the utility model is formed. The low-pulsation and low-noise gear pump can make pressure pulsation lower 70%, flow pulsation reduce to 1/4, volume efficiency reach more than 94% and noise observably lower. The utility model has good effects on enhancing the accuracy and the smoothness of the mechanical manufacturing workpieces.
Description
The utility model belongs to a kind of variable capacity gear pump, it is a kind of improvement to existing gear pump, particularly to the improvement of lathe with the CB-B series gear pump, though existing gear pump is used widely, but all exist flow pulsation big, the problem that noise is high, disclosed two kinds of gear pump GK87101425 of China's Gazette of Patent for Invention and model utility communique and GG87213662, the former is to solving sealing problem, reducing the system power loss makes moderate progress, the latter has certain improvement to reducing vibration and noise, but these two kinds of pump structures are comparatively complicated, and it is also high to make requirement.
The purpose of this utility model is on the basis of original variable capacity gear pump, carries out part and improves to reach the effect that it reduces pulsation and noise.
The utility model is finished as follows: it is to be a pair of gear subdivision in the existing gear pump two pairs of gears, and makes two gears on the same axle 1/2 P that staggers each other
b(base pitch), and between two gears, be added with dividing plate, all corresponding symmetric type compensating groove that has on dividing plate and the rear end cover.Dividing plate in the gear pump between two gears can be that whole dividing plate also can be two internal partitions separately, reduces pulsation effect for cooperating, and the oil outlet of gear pump rear end cover can be opened and be the circular arc chamfering formula.
One of the utility model embodiment preferably carries out part to CB-B series low pressure gear pump commonly used on the existing lathe to improve, and constitute new low pulsation low noise gear pump, the discharge capacity of every pair of gear of this structure gear pump is half of original gear discharge capacity, its total displacement does not change, but its flow pulsation then descends greatly, its flow pulsation only is 1/4th of original gear pump as calculated, pressure pulsation can reduce about 70%, volumetric efficiency reaches more than 94%, and noise also has obvious reduction.
Fig. 1 is the utility model embodiment's a general assembly drawing.
Fig. 2 is the utility model embodiment's a rear end cover.
Fig. 3 is the utility model embodiment's a whole dividing plate.
Fig. 4 is the utility model embodiment's a internal partition.
Below in conjunction with Brief Description Of Drawings, 1 is major axis in the accompanying drawing 1, and 2,8 is two pairs of gears, and 3 is minor axis, and 4 is protecgulum, and 5 is dividing plate, and 7 is rear end cover.1 is circular arc chamfering formula oil outlet in the accompanying drawing 2.
The utility model has been made material object, reach designing requirement with using effect after tested, this kind technological scheme is not only applicable to the improvement of lathe with the CB-B series gear pump, and be suitable for improvement to other variable capacity gear pump, to reach the effect of low pulsation low noise, thereby help improving the precision and the degree of finish of machining workpiece, and improve operational condition.
Claims (3)
1, a kind of variable capacity gear pump is characterized in that be two pairs of gears to original a pair of gear subdivision, and makes two gears on the same axle 1/2 P that staggers each other
b(base pitch), and between two gears, be added with dividing plate, all corresponding symmetric type compensating groove that has on the dividing plate rear end cover.
2, gear pump according to claim 1 is characterized in that being added in two internal partitions that two dividing plates between gear can be whole dividing plate or separate.
3, gear pump according to claim 1, the oil outlet that it is characterized in that rear end cover can be opened and be the circular arc chamfering formula.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214667 CN2042121U (en) | 1988-10-03 | 1988-10-03 | Low-pulsation and low-noise gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88214667 CN2042121U (en) | 1988-10-03 | 1988-10-03 | Low-pulsation and low-noise gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2042121U true CN2042121U (en) | 1989-08-02 |
Family
ID=4847571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88214667 Withdrawn CN2042121U (en) | 1988-10-03 | 1988-10-03 | Low-pulsation and low-noise gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2042121U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082145C (en) * | 1999-05-17 | 2002-04-03 | 中国石化集团洛阳石油化工工程公司 | Gearred pump |
| CN104564660A (en) * | 2015-01-16 | 2015-04-29 | 上海大学 | Low-pulse compound gear pump |
| CN104712554A (en) * | 2015-04-01 | 2015-06-17 | 山东大学 | Mini-type pump based on Logix gears |
| CN106930940A (en) * | 2017-05-16 | 2017-07-07 | 哈尔滨理工大学 | The modified gear pump of the CB B25 of anti-Parking Entrance cavitation outlet plenum backflow |
| CN114017158A (en) * | 2021-11-24 | 2022-02-08 | 中国航发沈阳发动机研究所 | Method for reducing oil supply fluctuation of aviation lubricating oil pump and aviation lubricating oil pump |
-
1988
- 1988-10-03 CN CN 88214667 patent/CN2042121U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1082145C (en) * | 1999-05-17 | 2002-04-03 | 中国石化集团洛阳石油化工工程公司 | Gearred pump |
| CN104564660A (en) * | 2015-01-16 | 2015-04-29 | 上海大学 | Low-pulse compound gear pump |
| CN104712554A (en) * | 2015-04-01 | 2015-06-17 | 山东大学 | Mini-type pump based on Logix gears |
| CN106930940A (en) * | 2017-05-16 | 2017-07-07 | 哈尔滨理工大学 | The modified gear pump of the CB B25 of anti-Parking Entrance cavitation outlet plenum backflow |
| CN114017158A (en) * | 2021-11-24 | 2022-02-08 | 中国航发沈阳发动机研究所 | Method for reducing oil supply fluctuation of aviation lubricating oil pump and aviation lubricating oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |