CN2210268Y - Reflux type light oil teeth pump - Google Patents
Reflux type light oil teeth pump Download PDFInfo
- Publication number
- CN2210268Y CN2210268Y CN 94223066 CN94223066U CN2210268Y CN 2210268 Y CN2210268 Y CN 2210268Y CN 94223066 CN94223066 CN 94223066 CN 94223066 U CN94223066 U CN 94223066U CN 2210268 Y CN2210268 Y CN 2210268Y
- Authority
- CN
- China
- Prior art keywords
- pump
- end cover
- rear end
- gear
- light oil
- 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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- Safety Valves (AREA)
Abstract
The utility model relates to a reflux type light oil gear pump. The pump body is provided with a driving shaft connected with a driving gear and a driven shaft which is sheathed in a driven gear, the front end of the pump body is provided with a front end cover, and the back end of the pump body is provided with a rear end cover. Composite bearings are arranged between the driving shaft and the driven shaft and the front end cover and the rear end cover, and sealing rings or sealing gaskets are arranged between the pump body and the front end cover and the rear end cover. The front end cover is equipped with an overflow valve. The reflux type light oil gear pump has the advantages of safe work, no leakage, etc., and is especially suitable for pressure oil pumps using light oil of gasoline, kerosene, etc.
Description
The utility model belongs to piston machinery or pump technical field, relate in particular to drive with drive unit, the intermeshed gear pump.
Gear pump is mainly used in the pressure pump of lubricant oil at present, as CB-B type gear gasoline pump, this gear gasoline pump, oil transportation outlet port at pump does not have pressure loading valve, and after oil gun was closed, gear pump was also in rotation, oil pressure increases severely, and causes the part of pump and oil gun and transport pipe to be damaged.Do not have seal ring or sealing gasket between the pump housing of this gear pump and front cover and the rear end cover, fluid is easy to leak out between the pump housing and front cover and rear end cover, not only wastes oil plant but also make the oil pump outside very dirty.In addition, rolling bearing or sliding bearing are installed between the driving shaft of this gear pump, driven axle and front cover and the rear end cover, are easy to produce static spark because of bearing high speed rotating between front cover and rear end cover and driving shaft and driven axle.This gear gasoline pump can only be used for the heavy oil press pump, the pressure oil pump of light oil such as inapplicable gasoline, kerosene.
The purpose of this utility model is to overcome the shortcoming of said gear gasoline pump, and a kind of relief valve of having set up is provided, and is applicable to the gear pump of light oil such as gasoline, kerosene.
For achieving the above object, the solution that the utility model adopts is: be provided with the driving shaft that connects with driving gear in the pump housing, be sleeved on the driven axle in the driven gear, front end at the pump housing is provided with front cover, the rear end is provided with the rear end, be provided with composite bearing between driving shaft and driven axle and front cover and the rear end cover, also be provided with seal ring or sealing gasket between the pump housing and front cover and the rear end cover, front cover is provided with relief valve.
Set relief valve is spring taper relief valve or spring steel ball relief valve on the utility model front cover.When the pressure of gear pump outlet port oil greater than the relief valve fixation pressure, relief valve is opened, and the light oil overflow in the gear pump hyperbaric chamber is got back in the low-pressure cavity.
The utility model is compared with CB-B type gear pump, has advantages such as not having leakage between safe and reliable, the pump housing and front cover and the rear end cover, is specially adapted to the pressure oil pump of light oil such as gasoline, kerosene.
Fig. 1 is an embodiment's of the utility model a structural representation.
Fig. 2 is the right elevation of Fig. 1.
Fig. 3 is the structural representation of Fig. 2 medi-spring taper relief valve.
Below in conjunction with drawings and Examples the utility model is further described.
In Fig. 1,2, driving shaft 16 and driven axle 9 are installed in the pump housing 5, driving shaft 16 and driving gear 11 fastening connections of 10 usefulness flat keys, driven axle 9 is sleeved in the driven gear 7, is separately installed with two composite bearings 3 between driving shaft 16 and driven axle 9 and front cover 8 and the rear end cover 1.The composite bearing 3 of present embodiment is the columnar structured of opening, adopts this composite bearing 3, and driving shaft 16 and driven axle 9 during high speed rotating, can not produce static spark because of friction in composite bearing 3.Between composite bearing 3 and driving gear 10 and driven gear 7, jump ring 12 is installed, in case driving shaft 16 and driven axle 9 axial floats.The circular groove that one cross section respectively arranged on the front and rear end of the pump housing 5 is O shape is equipped with on the front-end face of the pump housing 5 rear end cover 1 is housed on front cover 8, the ear end face, when front cover 8, rear end cover 1 connect with the pump housing 5, adopts straight pin 17 location, bolt 6 to connect.In the O shape circular groove of the front/rear end of the pump housing 5, O shape rubber seal 4 is housed, be used to prevent light oil such as gasoline, kerosene from seepage between the pump housing 5 and front cover 8 and the rear end cover 1, cause light oil such as gasoline, kerosene to catch fire.The outer cover of flange plate 13 is contained in the front cover 8, internal sleeve is contained in outside the driving shaft 16, and oil sealing rubber seal 14 also is housed in the flange plate 13.On front cover 8 and rear end cover 1, the both sides, front and back of driven axle 9 and the rear side of driving shaft 16 be equipped with gland 2.The front end of driving shaft 16 connects driving shaft 16 with flat key 15 with live axle.
In Fig. 2,3, in the side of front cover 8, oil transportation outlet (hyperbaric chamber) locates to install a relief valve.The relief valve of present embodiment adopts spring taper relief valve 18.Its structure is: a valve seat 18-1 is installed in oil transportation outlet port, the side of front cover 8, the internal sleeve of guiding valve 18-2 is equipped with spring 18-3 and is placed on the valve seat 18-1, end in addition at spring 18-3 is equipped with traveller 18-5, the outer cover of traveller 18-5 is equipped with valve gap 18-7, valve gap 18-7 and front cover 8 junctions are equipped with O shape rubber seal 18-4 and are used scyewed joint with front cover 8, at traveller 18-5 outer wall O shape rubber seal 18-6 is housed, O shape rubber seal 18-4 and O shape rubber seal 18-6 are in case fluid is installed the junction from part leaks out.Right-hand member at traveller 18-5 is equipped with pressure regulating screw 18-8, and pressure regulating screw 18-8 is used for adjusting the elastic force of spring 18-3 and adjusts the fluid outlet pressure of relief valve, and locking nut 18-9 and helmet 18-10 are housed in the outside of pressure regulating screw 18-8.The outlet of relief valve and the fluid of gear oil pump inlet (low-pressure cavity) link, when this gear pump source oil pressure increased, high-voltage oil liquid flowed into from the ingress of relief valve, backs down guiding valve 18-2, flow out to the fluid ingress of gear oil pump from the outlet port of relief valve, reach decompression oil return purpose.
Also can go out the light oil gear pump of another concrete structure according to above-mentioned principle design.Spring taper relief valve 18 among the previous embodiment is replaced with the spring steel ball relief valve.
Claims (2)
1, a kind of return flow type light oil gear pump, in the pump housing [5], be provided with the driving shaft [16] that connects with driving gear [10], be sleeved on the driven axle [9] in the driven gear [7], front end at the pump housing [5] is provided with front cover [8], the rear end is provided with rear end cover [1], be provided with bearing between driving shaft [16] and driven axle [9] and front cover [8] and the rear end cover [1], it is characterized in that: set bearing is composite bearing [3] between above-mentioned driving shaft [16] and driven axle [9] and front cover [8] and the rear end cover [1], also be provided with seal ring or sealing gasket between the pump housing [5] and front cover [8] and the rear end cover [1], front cover [8] is provided with relief valve.
2, according to the described return flow type light oil of claim 1 gear pump, it is characterized in that: said relief valve is spring taper relief valve ［ 18 ］ or spring steel ball relief valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94223066 CN2210268Y (en) | 1994-10-14 | 1994-10-14 | Reflux type light oil teeth pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94223066 CN2210268Y (en) | 1994-10-14 | 1994-10-14 | Reflux type light oil teeth pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210268Y true CN2210268Y (en) | 1995-10-18 |
Family
ID=33836894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94223066 Expired - Fee Related CN2210268Y (en) | 1994-10-14 | 1994-10-14 | Reflux type light oil teeth pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210268Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007140679A1 (en) * | 2006-05-30 | 2007-12-13 | Lingyu Dong | A gear pump |
| CN100429403C (en) * | 2006-12-29 | 2008-10-29 | 哈尔滨工业大学 | Gear pump with built in outer controlled overflow valve |
| CN101639063B (en) * | 2009-08-21 | 2011-01-26 | 深圳益宝实业有限公司 | Gear type oil pump |
| CN101968052A (en) * | 2010-11-12 | 2011-02-09 | 合肥长源液压件有限责任公司 | High-pressure gear oil pump |
| CN102003386A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Annular ring oil discharge valve lubricating pump |
| CN105370564A (en) * | 2015-11-24 | 2016-03-02 | 徐州科源液压股份有限公司 | Gear pump front cover with overflow protecting function |
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN110410317A (en) * | 2019-08-07 | 2019-11-05 | 烟台中宇航空液压有限公司 | A kind of reflux type light oil teeth pump |
-
1994
- 1994-10-14 CN CN 94223066 patent/CN2210268Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007140679A1 (en) * | 2006-05-30 | 2007-12-13 | Lingyu Dong | A gear pump |
| CN100429403C (en) * | 2006-12-29 | 2008-10-29 | 哈尔滨工业大学 | Gear pump with built in outer controlled overflow valve |
| CN101639063B (en) * | 2009-08-21 | 2011-01-26 | 深圳益宝实业有限公司 | Gear type oil pump |
| CN101968052A (en) * | 2010-11-12 | 2011-02-09 | 合肥长源液压件有限责任公司 | High-pressure gear oil pump |
| CN102003386A (en) * | 2010-11-27 | 2011-04-06 | 湖南机油泵股份有限公司 | Annular ring oil discharge valve lubricating pump |
| CN106481546A (en) * | 2015-08-28 | 2017-03-08 | 河南航天液压气动技术有限公司 | A kind of high rotating speed adjustable pressure small gear pump |
| CN105370564A (en) * | 2015-11-24 | 2016-03-02 | 徐州科源液压股份有限公司 | Gear pump front cover with overflow protecting function |
| CN110410317A (en) * | 2019-08-07 | 2019-11-05 | 烟台中宇航空液压有限公司 | A kind of reflux type light oil teeth pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |