CN207033628U - Single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve - Google Patents
Single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve Download PDFInfo
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- CN207033628U CN207033628U CN201720943748.4U CN201720943748U CN207033628U CN 207033628 U CN207033628 U CN 207033628U CN 201720943748 U CN201720943748 U CN 201720943748U CN 207033628 U CN207033628 U CN 207033628U
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Abstract
A kind of single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve disclosed in the utility model, it is desirable to provide one kind is with leakage rate is few, latch performance is good, oil outlet one-way valve is sufficiently entered in electric fuel punp oil suction.The utility model is achieved by following technical proposals：The fuel oil disengaging radial hole of radial communication electronic controlled fuel oil pumping chamber is formed with bolt valve body (1), fuel oil disengaging radial hole communicates with valve pocket axial hole, the valve element that valve pocket axial hole is assemblied in step axial hole with rear end is connected, valve element is made up of the valve seat (4) and ball seat (2) of two-phase laminated flow, and valve ball (3) is movably connected between valve seat (4) and the opposite symmetrical conical bore of ball seat (2).The utility model effectively solves the insufficient problem of electric fuel punp oil suction.
Description
Technical field
A kind of device for controlling diesel oil circulating direction is the utility model is related to, can especially control dynamic fuel flow direction
Check valve.
Background technology
Electrically operated fuel pump operation principle is solenoid-driven diaphragm, and generation suction is agitated using diaphragm, so as to Fuel System
System conveying fuel oil.It is to be understood that there can not be air in fuel system, fuel pump only in this way will not be just drawn air into, causes to fire
Oil pump pump oil pressure declines, and finally influences engine performance, discharge index.But because electronic controlled fuel pump high pressure fuel needs to let out
Pressure, pressure leak process high pressure fuel enter low-voltage fuel chamber, cause low-voltage fuel cavity pressure big ups and downs, allow and be dissolved in fuel oil
Air separate out, a large amount of bubbles are produced in low-voltage fuel chamber.It is to coordinate that single cylinder diesel electronic controlled fuel pump, which enters oil outlet one-way valve,
Fuel pump establishes the fuel gallery of an one-way flow, excludes a kind of device of fuel chamber bubble.
Check valve is also known as check-valves or non-return valve.It is that fluid can only export the dress that medium can not but flow back along inlet flow
Put.Check valve is generally divided into two kinds of through type and right-angle type.Straight check valve is arranged on pipeline with threaded connection.Right-angle type
Check valve has threaded connection, board-like connection to connect three kinds of forms with flange.Hydraulic control one-way valve is also referred to as locking-valve or pressure retaining valve, it with
Check valve is identical, to prevent fluid reverse flow.But again using control when needing oil stream reverse flow in hydraulic circuit
Oil pressure, check valve is opened, makes oil stream all flowable in both direction.Hydraulic control one-way valve uses taper valve core, therefore sealing property
It is good.When requiring closing oil path, pressure maintaining effect can be played by the use of this valve as the one-way locking of oil circuit.The common check valve of tubular type is usual
Using easily manufactured steel-ball type structure, because its centering and sealing are poor, low discharge and less demanding field are only used for
Close.And safety valve steel ball sealing annulus damages or is caught in booty etc., can make oil pump not pump oil.Delivery valve and delivery valve seat
It is a pair of precision pairs, can not be exchanged after pairing grinding, its fit clearance is 0.01mm.Delivery valve is a check valve, in bullet
Under the effect of spring pressure, valve upper cone face tightly coordinates with valve seat, and it is when stopping supplying, by high-pressure oil pipe and its upper end that it, which is acted on,
Cavity completely cuts off, and prevents the oil in high-pressure oil pipe from blowing back into injection pump.There is one to be referred to as pressure-reducing ring band under the conical surface of delivery valve
Small cylindrical surface, its effect is when fuel feeding is ended, and the oil pressure in high-pressure oil pipe is declined rapidly, avoids spray orifice from producing oil dripping and shows
As.Top volume is then set to increase quickly when annulus is fallen into valve seat, pressure reduces rapidly, and stop-spraying is rapid.Hydraulic control one-way valve control
The leakage way of liquefaction has internal drainage type and two kinds of the formula that leaks.During closure of check ring, water hammer pressure can be produced in pipeline, when serious
The damage of valve, pipeline or equipment can be caused, particularly with big mouth pipeline or pressure duct.Check valve only allows oil stream at one
Side upwardly through and then completely closing in the opposite direction.It is left then add oil pressure after, the oil flow pressure gram that acts on valve element
Take spring force and friction opens valve element, disengaging oil stream is connected.Oil stream is referred to as forward flow from the right flowing then of left then flow direction.
In order to ensure oil stream from oil inlet to fuel-displaced head piece steady flow, certain pressure differential should be kept between oil stream mouth is passed in and out, made
Valve is maintained at open position.If adding oil stream pressure in fuel-displaced head piece, disengaging oil stream is obstructed, i.e., oil stream is unable to reverse flow.
In automatically controlled single cylinder diesel fuel low-pressure system, there are two check valves, and direction on an electronic controlled fuel pump
On the contrary, plunger to a direction move when oil pump fuel chamber there is negative pressure, at this moment check valve opens liquid and is inhaled into oil pump
Fuel chamber, plunger to another direction move when, another check valve is opened after oil pump fuel oil intracavity liquid is pressurized, oil pump
The liquid of fuel chamber is discharged.This working method is formed fuel pump low-voltage fuel fuel feeding after continuously moving.
The content of the invention
In order to solve electronic controlled fuel pump oil-absorbing process suction air, cause the insufficient problem of oil suction, the utility model provides
One kind has dynamic airtightness, corresponding quick, good reliability, the sufficient single cylinder diesel electronic controlled fuel pump of electric fuel punp oil suction
Enter oil outlet one-way valve.
Technical scheme is used by the utility model solves its technical problem：A kind of single cylinder diesel electronic controlled fuel pump enters
Oil outlet one-way valve, has a bolt valve body 1, the valve pocket being arranged in bolt valve body 1 and is arranged on valve pocket axial passage import
Or the valve element and its valve valve ball 3 of outlet, it is characterised in that：The combustion of radial communication electronic controlled fuel oil pumping chamber is formed with bolt valve body 1
Oil disengaging radial hole, fuel oil disengaging radial hole communicate with valve pocket axial hole, and valve pocket axial hole is assemblied in step axial hole with rear end
In valve element be connected, valve element is made up of the valve seat 4 and ball seat 2 of two-phase laminated flow, and valve ball 3 is movably connected in valve seat 4 and ball seat 2 is opposite
Between symmetrical conical bore.
The utility model has the advantages that compared to prior art.
Dynamic airtightness.The utility model does not have to produce pre-compression force using spring compression valve ball 3 in traditional check valve
Structure, but sealed using valve ball 3 with the valve element being made up of the valve seat 4 and ball seat 2 of two-phase laminated flow, the structure does not possess combustion
Oily static sealing, only possesses fuel oil dynamic airtightness.
It is corresponding quick.The utility model is on bolt valve body 1 using the fuel oil for being formed with radial communication electronic controlled fuel oil pumping chamber
Radial hole is passed in and out, fuel oil disengaging radial hole is communicated with valve pocket axial hole, and valve pocket axial hole is assemblied in step axial hole with rear end
Valve element be connected, fuel flow resistance is small；Valve ball 3 is not pre- by appointing in the valve element being made up of the valve seat 4 and ball seat 2 of two-phase laminated flow
Compression stress, activity is flexible, when positive fuel oil promotes valve ball 3 to be bonded with the conical surface of valve seat 4, reverse fuel oil promotes valve ball 3 to be bored with valve seat 4
When face separates, the rapid reaction of valve ball 3.
Good reliability.The valve element being made up of in the utility model the valve seat 4 and ball seat 2 of two-phase laminated flow is strictly by design parameter
It is required that being assembled, met in check valve using shock loading caused by the process intermediate fuel oil promotion shock of valve ball 3 valve seat 4, ball seat 2
Design requirement, check valve use reliability are good.
Electric fuel punp oil suction is abundant.In the utility model a list is constructed into and out of oily check valve for electronic controlled fuel pump
To the fuel gallery of flowing, bubble caused by electronic controlled fuel pump high pressure fuel pressure release is allowed to discharge electronic controlled fuel pump with passage.
Fuel oil is full of in electronic controlled fuel pump, ensure that electronic controlled fuel pump oil-absorbing process oil suction is abundant.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the organigram of the utility model single cylinder diesel electronic controlled fuel pump return check valve.
Fig. 2 is the organigram of the utility model single cylinder diesel electronic controlled fuel pump in line check valve.
Fig. 3 is Fig. 1, Fig. 2 ball seat front view.
Fig. 4 is Fig. 1, Fig. 2 ball seat sectional view.
Fig. 5 is Fig. 1, Fig. 2 valve seat front view.
Fig. 6 is Fig. 1, Fig. 2 valve seat sectional view.
In figure：1 bolt valve body, 2 ball seats, 3 valve balls, 4 valve seats.
Embodiment
Refering to Fig. 1-Fig. 6.In embodiment described below, a kind of single cylinder diesel electronic controlled fuel pump enters fuel-displaced unidirectional
Valve, has a bolt valve body 1, the valve pocket being arranged in bolt valve body 1 and is arranged on valve pocket axial passage import or export
Valve element and its valve ball 3, wherein, the fuel oil that radial communication electronic controlled fuel oil pumping chamber is formed with bolt valve body 1 passes in and out radial hole, fuel oil
Disengaging radial hole communicates with valve pocket axial hole, and the valve element that valve pocket axial hole is assemblied in step axial hole with rear end is connected, valve element
It is made up of the valve seat 4 and ball seat 2 of two-phase laminated flow, valve ball 3 is movably connected between valve seat 4 and the conical bore symmetrical in opposite directions of ball seat 2.
In line check valve operation principle：Low-voltage fuel is entered by bolt valve body 1, by valve seat 4, valve ball 3, from ball seat 2
Enter electronic controlled fuel pump fuel chamber in through hole, when electronic controlled fuel pump high pressure fuel pressure release, in through hole of the high pressure fuel by ball seat 2
Into bolt valve body 1, valve ball 3 is bonded under high pressure fuel promotion with the conical surface of valve seat 4, forms sealing.
Oil outlet one-way valve operation principle：High pressure fuel in electronic controlled fuel pump pump chamber is entered by valve seat 4, by valve ball 3, ball
Seat 2, flows back to fuel tank, when electronic controlled fuel pump high pressure fuel oil suction, low-voltage fuel is entered by bolt valve body 1, valve from bolt valve body 1
Ball 3 moves with low-voltage fuel, is bonded with the conical surface of valve seat 4, forms sealing.
Into and out of oily check valve together with electronic controlled fuel pump, the fuel gallery of an one-way flow is constructed.Through testing
Card, the insufficient problem of electric fuel punp oil suction is can effectively solve the problem that into and out of oily check valve scheme.
Claims (1)
1. a kind of single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve, there is a bolt valve body (1), be arranged on bolt valve body
(1) valve pocket in and the valve element and its valve valve ball (3) for being arranged on valve pocket axial passage import or export, it is characterised in that：Bolt
The fuel oil disengaging radial hole of radial communication electronic controlled fuel oil pumping chamber, fuel oil disengaging radial hole and valve pocket axial direction are formed with valve body (1)
Hole communicates, and the valve element that valve pocket axial hole is assemblied in step axial hole with rear end is connected, valve element by two-phase laminated flow valve seat (4) and
Ball seat (2) is formed, and valve ball (3) is movably connected between valve seat (4) and the opposite symmetrical conical bore of ball seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943748.4U CN207033628U (en) | 2017-07-31 | 2017-07-31 | Single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943748.4U CN207033628U (en) | 2017-07-31 | 2017-07-31 | Single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207033628U true CN207033628U (en) | 2018-02-23 |
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ID=61461777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720943748.4U Active CN207033628U (en) | 2017-07-31 | 2017-07-31 | Single cylinder diesel electronic controlled fuel pump enters oil outlet one-way valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN207033628U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387281A (en) * | 2017-07-31 | 2017-11-24 | 成都威特电喷有限责任公司 | Diesel common rail oil pump enters oil outlet one-way valve |
| CN111550583A (en) * | 2020-04-13 | 2020-08-18 | 宁波润华全芯微电子设备有限公司 | High-precision glue pump for glue homogenizing and developing equipment |
-
2017
- 2017-07-31 CN CN201720943748.4U patent/CN207033628U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387281A (en) * | 2017-07-31 | 2017-11-24 | 成都威特电喷有限责任公司 | Diesel common rail oil pump enters oil outlet one-way valve |
| CN111550583A (en) * | 2020-04-13 | 2020-08-18 | 宁波润华全芯微电子设备有限公司 | High-precision glue pump for glue homogenizing and developing equipment |
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