CN204663871U - A kind of gear fuel supply pump - Google Patents
A kind of gear fuel supply pump Download PDFInfo
- Publication number
- CN204663871U CN204663871U CN201520202397.2U CN201520202397U CN204663871U CN 204663871 U CN204663871 U CN 204663871U CN 201520202397 U CN201520202397 U CN 201520202397U CN 204663871 U CN204663871 U CN 204663871U
- Authority
- CN
- China
- Prior art keywords
- oil
- gear
- pump
- fuel supply
- pump housing
- 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
Links
Landscapes
- Rotary Pumps (AREA)
Abstract
A kind of gear fuel supply pump, comprise one group of engaging gear, the pump housing, pump cover, oil-feed plug screw, fuel-displaced plug screw and safety valve, it is characterized in that: also comprise orifice sleeve, described pump cover is provided with out oil return line and sealing cover is combined in pump housing one end, the pump housing is provided with leakage passage, gear cavity, the oil-feed loop be communicated with gear cavity with leakage passage, with the oil return circuit of circuit communication fuel-displaced on gear cavity and pump cover, described safety valve is arranged on leakage passage, described one group of meshed gears is placed in gear cavity, described orifice sleeve is arranged on on the oil-feed loop of gear cavity, the internal diameter of this orifice sleeve and the flow needed for described oil transfer pump suitable, described oil-feed plug screw and fuel-displaced plug screw arrange the filler opening in oil-feed loop respectively and go out on the oil outlet of oil return line.Its advantage is: cost of production is low, and cost performance is high.
Description
Technical field
The utility model relates to gear pump, particularly relates in diesel engine high-pressure co-rail system to a kind of gear fuel supply pump of common rail pump fuel feeding.
Background technique
One-level oil pressure about gear fuel supply pump in diesel engine high-pressure co-rail system promotes about 5 kg/cm from fuel tank is to common rail pump.This kind of gear fuel supply pump is coordinate the common rail pump of different flow to have to have Multiple Type at present, various in style, and the production of the gear fuel supply pump of each model all must be equipped with special mould and frock clamping, if the output of often kind of gear oil pump is not high, cost of production will be made greatly to improve.
Simultaneously, if the gear cutting in this kind of gear fuel supply pump, not only work efficiency is low and consumptive material is high, cost of production is increased, therefore in order to improve the cost performance of gear fuel supply pump product, substantially powder metallurgy mold pressing mode is all adopted to process this gear at present, its processing cost is about 1/10th of cutting formative gear, but machining accuracy will be inferior to the gear of cutting, thus when engagement driving, steady not as the gear transmission of cutting, affect the working life of gear.
Therefore, need to provide a kind of low cost of manufacture a kind of gear fuel supply pump of good performance.
Summary of the invention
The purpose of this utility model is a kind of gear fuel supply pump providing a kind of cost performance high.
For achieving the above object, the oil transfer pump that the utility model provides is in order to common rail pump fuel feeding in diesel engine high-pressure co-rail system, this oil transfer pump comprises one group of engaging gear, the pump housing, pump cover, oil-feed plug screw, fuel-displaced plug screw and safety valve, it is characterized in that: also comprise orifice sleeve, described pump cover is provided with out oil return line and sealing cover is combined in pump housing one end, the pump housing is provided with leakage passage, gear cavity, the oil-feed loop be communicated with gear cavity with leakage passage, with the oil return circuit of circuit communication fuel-displaced on gear cavity and pump cover, described safety valve is arranged on leakage passage, described one group of meshed gears is placed in gear cavity, described orifice sleeve is arranged on on the oil-feed loop of gear cavity, the internal diameter of this orifice sleeve and the flow needed for described oil transfer pump suitable, described oil-feed plug screw and fuel-displaced plug screw arrange the filler opening in oil-feed loop respectively and go out on the oil outlet of oil return line.
For making described oil transfer pump operate steadily, relax vibration, the driving gear shaft in described one group of engaging gear, the axle sleeve rotating support made with Teflon material is on the pump housing.
The external diameter of described orifice sleeve and the caliber in oil-feed loop suitable and by being tightly fixed on oil-feed loop.
Described one group of meshed gears comprises intermeshing driving gear and driven gear, sheathed described axle sleeve in the rotating shaft of driving gear, and the one end of stretching out the pump housing connects power driven gear, one end that the pump housing is stretched out in described driving gear rotating shaft is tightly connected by outside framework oil seal and the pump housing.
Can comparatively fast start without under oil condition at inner chamber to make described oil transfer pump, the described pump housing is also provided with other oil return line and bypass valve, to provide a quick oil feeding line when starting, described other oil return line is communicated with oil-feed loop and oil return circuit, and be made up of the other oil pipe line being interconnected logical bypass valve pocket and caliber and being less than bypass valve pocket, described bypass valve is placed in bypass valve pocket.
Further, described bypass valve comprises adjusting screw, spring and spool, and what described spool was placed in bypass valve pocket and other oil pipe line is communicated with end, and adjusting screw is screwed on the pump housing, and both ends of the spring is tight against in adjusting screw and spool.
Further, described leakage passage is made up of the drain line being interconnected logical safe valve pocket and caliber and being less than safe valve pocket, and described safety valve is placed in safe valve pocket.
Further, described safety valve comprises adjusting screw, spring and steel ball, and what described steel ball was placed in bypass valve pocket and drain line is communicated with end, and adjusting screw is screwed on the pump housing, and both ends of the spring is tight against in adjusting screw and steel ball.
Above-mentioned gear fuel supply pump of the present utility model has following beneficial effect: 1) by coordinating the orifice sleeve of different inner diameters to form the gear fuel supply pump of different output flow on oil-feed loop, the little oil transfer pump of the multiple batch of type is produced and is become the fairly large production of same type, thus reduction cost of production, improve product cost; 2) with the sleeve supporting gear shaft that Teflon material is made, the vibration likely produced when absorbing mold pressing gears meshing, improve the working life of gear shaft, the mold pressing gear making employing cheap and oil transfer pump performance can not be reduced become possibility, again play and reduce costs, improve the effect of product cost.
Accompanying drawing explanation
Fig. 1 is the form structure schematic diagram of the utility model oil transfer pump.
Fig. 2 is the B-B sectional view of oil transfer pump shown in Fig. 1.
Fig. 3 is the left view of oil transfer pump shown in Fig. 1.
Fig. 4 is the A-A sectional view of oil transfer pump shown in Fig. 3.
Fig. 5 is the right elevation of oil transfer pump shown in Fig. 1.
Embodiment
As Fig. 1-5, gear fuel supply pump of the present utility model is in order to give the common rail pump fuel feeding of diesel engine high-pressure co-rail system, and this oil transfer pump is primarily of the pump housing 1, pump cover 2, orifice sleeve 4, oil-feed plug screw 51, fuel-displaced plug screw 52, safety valve 8 and engage each other one group of gear 3 and form.Pump cover 2 sealing cover is combined in one end of the pump housing 1 and is connected on the pump housing 1 by several screw 54, which is provided be disposed radially go out oil return line 21, on the oil outlet going out oil return line 21, spiral connects fuel-displaced plug screw 52.The pump housing 1 is provided with leakage passage 14, gear cavity 15, oil-feed loop 11 and oil return circuit 13, leakage passage 14 with on pump cover 2 to go out oil return line 21 parallel, two loops are communicated with by the oil return circuit 13 vertical with this two loop.Gear cavity 15 is arranged on one end that the pump housing 1 covers with pump cover 2, and it is built-in with one group of described gear 3, and this group gear 3 comprises driving gear 31 and driving gear 32.And two ends parallel with oil return circuit 13, oil-feed loop 11 are communicated with leakage passage 14 with gear cavity 15 respectively, and oil-feed loop 11 is provided with filler opening, and on it, spiral connects oil-feed plug screw 5.
The utility model is also arranging orifice sleeve 4 by oil flow to the oil-feed loop 11 of gear cavity, the external diameter of this orifice sleeve 4 and the caliber in oil-feed loop suitable, and by being tightly fixed on oil-feed loop 11.Internal diameter flow design needed for oil transfer pump of orifice sleeve 4, the gear oil pump carrying out first class pressure lifting to common rail pump so all can make unified structure, by the gear fuel supply pump coordinating the orifice sleeve 4 of different inner diameters just can become different output flow on oil-feed loop 11, this makes the production of the oil delivery pump body of all different flows, pump cover all can use identical frock clamping and mould, thus make the production of the multiple batch of type little oil transfer pump become the larger oil transfer pump production of same type, greatly reduce costs, and improve the cost performance of product.
Meanwhile, the utility model axle sleeve that also sheathed Teflon material is made in the rotating shaft 30 of driving gear, by this sleeve supporting on the pump housing 1, the vibration that such Absorbable rod may be caused by mold pressing gear transmission, thus the life-span of improving rotary gear shaft.Pump Ligation in vitro power driven gear 7 is stretched out in this rotating shaft 30 one end, and its external part is tightly connected by outside framework oil seal 302 and the pump housing.
Produce leakage passage 14 that too high pressure arranges in the course of the work to be made up of the drain line 141 being interconnected logical safe valve pocket 142 and caliber and being less than safe valve pocket to prevent oil transfer pump, safety valve 8 is placed in safe valve pocket 142.This safety valve comprises adjusting screw 82, spring 81 and steel ball 83, and what steel ball 83 was placed in safe valve pocket 142 and drain line 141 is communicated with end, and adjusting screw 82 is screwed on the pump housing 1, and the two ends of spring 81 are tight against respectively on the corresponding end face of adjusting screw and steel ball.When the oil pressure in gear cavity 15 is larger, this oil pressure puts on the steel ball 8 of safety valve 14 through oil return circuit 13, drain line 14, and when the pressure of this oil pressure is greater than the pressure of spring 81, steel ball 83 is open, and oil is back in the oil-feed loop 11 of lower pressure.
Start fast under the state of inner chamber without oil for the ease of oil transfer pump, other oil return line 12 and bypass valve 9 are also set in oil transfer pump of the present utility model, other oil return line 12 is by oil-feed loop and oil return circuit and oil transfer pump inner space, this side oil return line 12 is made up of the other oil pipe line 121 being interconnected logical bypass valve pocket 122 and caliber and being less than bypass valve pocket, and bypass valve 9 is placed in bypass valve pocket 122.Bypass valve 9 comprises adjusting screw 92, spring 91 and spool 93, and what spool 93 was placed in bypass valve pocket 122 and other oil pipe line 121 is communicated with end, and adjusting screw 92 is screwed on the pump housing 1, and spring 91 two ends are tight against respectively in adjusting screw and the corresponding end face of spool.When needs start oil transfer pump fast, pump into the oil of certain pressure from the filler opening oil-feed loop, this oil is pushed spool 93 open and enters the inner chamber of pump fast.
Claims (10)
1. a gear fuel supply pump, in order to give the common rail pump fuel feeding of diesel engine high-pressure co-rail system, this oil transfer pump comprises one group of engaging gear, the pump housing, pump cover, oil-feed plug screw, fuel-displaced plug screw and safety valve, it is characterized in that: also comprise orifice sleeve, described pump cover is provided with out oil return line and sealing cover is combined in pump housing one end, the pump housing is provided with leakage passage, gear cavity, the oil-feed loop be communicated with gear cavity with leakage passage, with the oil return circuit of circuit communication fuel-displaced on gear cavity and pump cover, described safety valve is arranged on leakage passage, described one group of meshed gears is placed in gear cavity, described orifice sleeve is arranged on on the oil-feed loop of gear cavity, the internal diameter of this orifice sleeve and the flow needed for described oil transfer pump suitable, described oil-feed plug screw and fuel-displaced plug screw arrange the filler opening in oil-feed loop respectively and go out on the oil outlet of oil return line.
2. a kind of gear fuel supply pump according to claim 1, is characterized in that: the external diameter of described orifice sleeve and the caliber in oil-feed loop suitable and by being tightly fixed on oil-feed loop.
3. a kind of gear fuel supply pump according to claim 1, is characterized in that: at least one gear in described one group of engaging gear by the axle sleeve rotating support made with Teflon material sheathed on this rotary gear shaft on the pump housing.
4. a kind of gear fuel supply pump according to any one of claim 1-3, is characterized in that: described one group of meshed gears comprises intermeshing driving gear and driven gear.
5. a kind of gear fuel supply pump according to claim 3, is characterized in that: described axle sleeve is set in the rotating shaft of driving gear, and one end connection power driven gear of the pump housing is stretched out in the rotating shaft of driving gear.
6. a kind of gear fuel supply pump according to claim 5, is characterized in that: one end that the pump housing is stretched out in the rotating shaft of described driving gear is tightly connected by outside framework oil seal and the pump housing.
7. a kind of gear fuel supply pump according to any one of claim 1-3, it is characterized in that: the described pump housing is also provided with other oil return line and bypass valve, described other oil return line is communicated with oil-feed loop and oil return circuit, and be made up of the other oil pipe line being interconnected logical bypass valve pocket and caliber and being less than bypass valve pocket, described bypass valve is placed in bypass valve pocket.
8. a kind of gear fuel supply pump according to claim 7, it is characterized in that: described bypass valve comprises adjusting screw, spring and spool, what described spool was placed in bypass valve pocket and other oil pipe line is communicated with end, and adjusting screw is screwed on the pump housing, and both ends of the spring is tight against in adjusting screw and spool.
9. a kind of gear fuel supply pump according to claim 1, is characterized in that: described leakage passage is made up of the drain line being interconnected logical safe valve pocket and caliber and being less than safe valve pocket, and described safety valve is placed in safe valve pocket.
10. a kind of gear fuel supply pump according to claim 9, it is characterized in that: described safety valve comprises adjusting screw, spring and steel ball, what described steel ball was placed in bypass valve pocket and drain line is communicated with end, and adjusting screw is screwed on the pump housing, and both ends of the spring is tight against in adjusting screw and steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202397.2U CN204663871U (en) | 2015-04-07 | 2015-04-07 | A kind of gear fuel supply pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520202397.2U CN204663871U (en) | 2015-04-07 | 2015-04-07 | A kind of gear fuel supply pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663871U true CN204663871U (en) | 2015-09-23 |
Family
ID=54134259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520202397.2U Expired - Fee Related CN204663871U (en) | 2015-04-07 | 2015-04-07 | A kind of gear fuel supply pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776020A (en) * | 2015-04-07 | 2015-07-15 | 金湖县常盛动力机械配件有限公司 | Gear type oil transfer pump |
| CN106194721A (en) * | 2016-08-31 | 2016-12-07 | 金湖县常盛动力机械配件有限公司 | A kind of gear pump |
-
2015
- 2015-04-07 CN CN201520202397.2U patent/CN204663871U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104776020A (en) * | 2015-04-07 | 2015-07-15 | 金湖县常盛动力机械配件有限公司 | Gear type oil transfer pump |
| CN106194721A (en) * | 2016-08-31 | 2016-12-07 | 金湖县常盛动力机械配件有限公司 | A kind of gear pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204663871U (en) | A kind of gear fuel supply pump | |
| CN102062092B (en) | Single-stage medium-pressure single-screw air compressor | |
| CN202579169U (en) | Cycloidal fuel delivery pump of high-pressure common rail fuel injection system | |
| CN104776020A (en) | Gear type oil transfer pump | |
| CN203051723U (en) | Reciprocating-type oil filtering and changing cleaning machine | |
| CN205172639U (en) | Natural valve station step -down system | |
| CN203374412U (en) | Fuel return system of high pressure common rail pump | |
| CN203022834U (en) | Hollow cam shaft | |
| CN201884915U (en) | Engine oil pump with double oil outlets | |
| CN205534993U (en) | Gear formula variable pump | |
| CN202628350U (en) | Electric control single-cylinder fuel injection pump | |
| CN203835710U (en) | Improved NCB internal gear pump | |
| CN202468300U (en) | Steering gear pump | |
| CN202707316U (en) | Oil supply device assembly for double-fuel outboard machine | |
| CN203463420U (en) | Cylinder return oil cooler | |
| CN205155525U (en) | Light -duty large -traffic oil pump | |
| CN201339499Y (en) | Low-pressure safe oil supply device of lubricating oil filter for diesel engine | |
| CN204941858U (en) | Explosion-proof type kinetic energy output device | |
| CN204841140U (en) | Water purification unit's fast tying of filter core constructs | |
| CN204941862U (en) | Oil tanker oil-storing barrel cleaning system | |
| CN204082538U (en) | The integrative-structure of a kind of gear pump and fluid valve | |
| CN202598086U (en) | Engine oil compression pump | |
| CN202646236U (en) | Ultrahigh pressure pneumatic hydraulic station | |
| CN202381669U (en) | Cooling device for pre-pressing speed reducing machine | |
| CN110630348B (en) | Engine oil system and engine oil flow adjusting method |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20180407 |