CN209146336U - A kind of fuel oil gas control stop valve - Google Patents
A kind of fuel oil gas control stop valve Download PDFInfo
- Publication number
- CN209146336U CN209146336U CN201822135776.0U CN201822135776U CN209146336U CN 209146336 U CN209146336 U CN 209146336U CN 201822135776 U CN201822135776 U CN 201822135776U CN 209146336 U CN209146336 U CN 209146336U
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- mounting hole
- cavity
- piston
- valve body
- fuel
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Abstract
The purpose of this utility model is to provide a kind of fuel oil gas control stop valves, to solve the problems, such as that fuel system that in the prior art can not be excessively high to fuel pressure carries out oil pressure adjusting.The fuel oil gas control stop valve of the utility model, comprising: valve seat comprising interconnected fuel feed hole, oil outlet and the first mounting hole；Valve body is internally provided with cavity, and the air intake duct and the second mounting hole of the cavity are opened up and be connected to from the outer surface of the valve body；Piston, setting in the cavity, and are partially inserted in second mounting hole, have the first gap entered for the air in the air intake duct between the piston and the first cavity wall of the cavity；Pressure spring is set between the second cavity wall of the cavity and the piston；Spool is inserted in the fuel feed hole and first mounting hole, and is oppositely arranged with the piston.
Description
Technical field
The utility model relates to diesel fuel injection system technical field, specifically a kind of fuel oil gas control stop valve.
Background technique
Stop valve is one of diesel fuel system security system, has structure simple, is quick on the draw, reliable in action
The features such as, diesel fuel system industry is widely applied.The general stop valve use environment not high for system pressure, and be
System pressure is more than that the stop valve of 100MPa or more is few, while the relatively complicated higher cost of structure.
Utility model content
The purpose of this utility model is to provide a kind of fuel oil gas control stop valves, in the prior art can not be to fuel oil with solution
The fuel system of hypertonia carries out the problem of oil pressure adjusting.
The technical solution of the utility model are as follows:
The utility model provides a kind of fuel oil gas control stop valve, comprising:
Valve seat comprising interconnected fuel feed hole, oil outlet and the first mounting hole；
Valve body is internally provided with cavity, and opened up from the outer surface of the valve body and be connected to the cavity into
Air flue and the second mounting hole；
Piston, setting in the cavity, and are partially inserted in second mounting hole, the piston and the sky
There is the first gap entered for the air in the air intake duct between first cavity wall of chamber；
Pressure spring is set between the second cavity wall of the cavity and the piston；
Spool is inserted in the fuel feed hole and first mounting hole, and is oppositely arranged with the piston；
When entering gas in the air intake duct, the piston moves up under the active force of gas, and the spool exists
It is moved under the action of input pressure into second mounting hole, the fuel feed hole and the oil outlet are switched on, in fuel feed hole
Fuel oil outflowed by the oil outlet；
When not entering gas in the air intake duct, the piston is downward under the action of the bounce of the pressure spring
Mobile, the piston pushes the spool to move into first mounting hole, and the fuel feed hole and the oil outlet are blocked,
Block the fuel oil outflow in fuel feed hole.
Preferably, between the fuel feed hole, the oil outlet and first mounting hole have cavity, the fuel feed hole and
There is first conical surface at the position of the cavity connection；The spool includes:
First auxiliary section, first auxiliary section have second conical surface that conical surface seal is formed with first conical surface；
With the second auxiliary section of first mounting hole cooperation, first auxiliary section connects second auxiliary section；
When being moved under the action of the spool is in input pressure into the second mounting hole, first auxiliary section part into
Enter to first mounting hole, forms the second gap between first conical surface and second conical surface, make the combustion in fuel feed hole
Oil passes through flow direction behind second gap and the cavity to the oil outlet.
Preferably, it is also provided with the gas off-take for being connected to the cavity on the outer surface of the valve body, is located at the piston
Gas between the other side side wall of the cavity is discharged by the gas off-take.
Preferably, the valve body includes:
Valve body ontology, second mounting hole are set on the valve body ontology, and are additionally provided on the valve body ontology
The third mounting hole being connected to second mounting hole, the piston are inserted in second mounting hole from the third mounting hole
It is interior；
The pressing plate being installed on the valve body ontology, the pressing plate is towards being provided on the end face of the valve body ontology and institute
The 4th opposite mounting hole of third mounting hole is stated, the third mounting hole and the 4th mounting hole form the cavity；
One end of the pressure spring is fixed on the piston, and the other end is fixed on the hole wall of the 4th mounting hole
On.
Preferably, there is the third space passed through for fuel oil, the outer surface of the valve seat between the valve seat and the valve body
It is equipped with the axial groove for being connected to the third space.
Preferably, the first sealing ring and the second sealing ring, first sealing ring and the sky are arranged on the piston
Chamber cooperation, second sealing ring and second mounting hole cooperate.
Preferably, on the outer surface of the valve body in axial direction on be arranged with third sealing ring.
Preferably, the pressing plate is spirally connected with the valve body ontology.
The utility model has the following beneficial effects:
The above scheme of the utility model, by the Outer enclosing member of manually opened air inlet side, so that external
Compressed gas enters in valve body, pushes piston motion, so that spool pushes spool mobile under the action of fuel pressure,
Fuel feed hole and oil outlet is connected, realizes fuel oil pressure release.When air inlet side does not enter back into gas, in the bounce of pressure spring
Under the action of, push piston to move down, piston pushes spool to move down, so that spool is moved back to blocking fuel feed hole and fuel-displaced
The state of connection between hole, so that fuel oil can not be entered back into the oil outlet.
Detailed description of the invention
Fig. 1 is one of the structural schematic diagram of the utility model；
Fig. 2 is the second structural representation of the utility model；
Fig. 3 is the structure chart of the utility model valve seat；
Fig. 4 is the structure chart of the spool of the utility model；
Fig. 5 is the valve seat of the utility model and the structural schematic diagram of spool cooperation；
Description of symbols: 1-- valve seat；11-- fuel feed hole；12-- oil outlet；The first mounting hole of 13--；21-- air intake duct；
The second mounting hole of 22--；3-- piston；The first gap 31--；4-- pressure spring；5-- spool；The first auxiliary section 51--；52--
Two auxiliary sections；23-- gas off-take；24-- valve body ontology；25-- third mounting hole；26-- pressing plate；The 4th mounting hole of 27--；14--
Third space；15-- axial groove；The first sealing ring of 32--；The second sealing ring of 33--；28-- third sealing ring；261-- air inlet；
262-- bolt；The 4th sealing ring of 29--；First conical surface of 111--；Second conical surface of 511--；16-- cavity；41-- protrusion.
Specific embodiment
Referring to Fig.1 with Fig. 2, the utility model provides a kind of fuel oil gas control stop valve, comprising: valve seat 1 comprising mutually
Fuel feed hole 11, oil outlet 12 and the first mounting hole 13 of connection；Valve body, is internally provided with cavity, and from the valve body
Outer surface opens up and is connected to the air intake duct 21 and the second mounting hole 22 of the cavity；Piston 3 is arranged in the cavity,
And part is inserted in second mounting hole 22, have between the piston 3 and the first cavity wall of the cavity for it is described into
The first gap 31 that air in air flue 21 enters；Pressure spring 4, be set to the cavity the second cavity wall and the piston
Between 3；Spool 5 is inserted in the fuel feed hole 11 and first mounting hole 13, and is oppositely arranged with the piston 3；?
When entering gas in the air intake duct 21, the piston 3 moves up under the active force of gas, and the spool 5 is in oil inlet pressure
It is moved under the action of power into second mounting hole 22, the fuel feed hole 11 and the oil outlet 12 are switched on, fuel feed hole 11
In fuel oil pass through the oil outlet 12 outflow；When not entering gas in the air intake duct 21, the piston 3 is in the pressure regulation
It being moved down under the action of the bounce of spring 4, the piston 3 pushes the spool 5 to move into first mounting hole 13,
The fuel feed hole 11 and the oil outlet 12 are blocked, and block the fuel oil outflow in fuel feed hole 11.
Wherein, for valve body, specifically include: valve body ontology 24, second mounting hole 22 are set to the valve
On body ontology 24, and the third mounting hole 25 being connected to second mounting hole 22, institute are additionally provided on the valve body ontology 24
Piston 3 is stated to be inserted in second mounting hole 22 from the third mounting hole 25；The pressure being installed on the valve body ontology 24
Plate 26, the pressing plate 26 is towards being provided with fourth peace opposite with the third mounting hole 25 on the end face of the valve body ontology 24
Hole 27 is filled, the third mounting hole 25 forms the cavity with the 4th mounting hole 27；One end of the pressure spring 4 is fixed
On the piston 3, the other end is fixed on the hole wall of the 4th mounting hole 27.
Specifically, the 4th mounting hole 27 is stepped hole, is provided in the side of pressure spring 4 towards the 4th mounting hole 27 convex
41 are played, which is positioned by the bottom outlet of the protrusion 41 and the 4th mounting hole 27, can prevent pressure spring 4 from existing
Occur double swerve in contraction process, pressure spring 4 is avoided to cut off.
As shown in Fig. 2, offering air inlet 261 on pressing plate 26, it is connected to air intake duct 21.Air inlet 261 is connected to outer
Boundary, the external world in gas (gas be the compressed gas with pressure, such as compressed air, pressure be located at 0.3 to 0.5Mpa it
Between) entered in air intake duct 21 by the air inlet 261, the gas entered in air intake duct 21 is reached by first gap 31
The lower surface of piston 3, under the influence of gas, piston 3 move up and (move straight up in Fig. 2), piston 3 and pressing plate 26 it
Between i.e. have one section of gap that can be moved up for spool 5, fuel pressure be greater than scheduled pressure value P when, in fuel pressure
Under the action of, spool 5 is pushed, and (direction in Fig. 2 straight up is mobile) is moved up.After spool 5 moves up,
It is then in the conductive state between fuel feed hole 11 and oil outlet 12, at this point, the fuel oil in fuel system is flowed by fuel feed hole 11
In oil outlet 12, and simultaneously pressure release is discharged by oil outlet 12, achievees the effect that the fuel pressure for reducing fuel system.
When 261 side of air inlet does not enter back into gas, under the action of the bounce of pressure spring 4, push piston 3 to
Lower movement (vertically downward direction is mobile in Fig. 2), piston 3 push spool 5 to move down (vertically downward direction shifting in Fig. 2
It is dynamic) so that state of the return of spool 5 to the connection between blocking fuel feed hole 11 and oil outlet 12, so that fuel oil can not enter back into
Into the oil outlet 12.
Specifically, as shown in Figure 4 and Figure 5, between the fuel feed hole 11, the oil outlet 12 and first mounting hole 13
With cavity 16, there is first conical surface 111 at the position that the fuel feed hole 11 is connected to the cavity；The spool 5 includes:
First auxiliary section 51, first auxiliary section 51, which has, forms the second of conical surface seal with first conical surface 111
The conical surface 511；
With the second auxiliary section 52 of first mounting hole 13 cooperation, first auxiliary section 51 connects second cooperation
Portion 52；
When being moved under the action of the spool 5 is in input pressure into the second mounting hole 22, first auxiliary section 51
Part enters in first mounting hole 13, forms the second gap between first conical surface 111 and second conical surface 511,
The fuel oil in fuel feed hole 11 is set to pass through flow direction behind second gap and the cavity 16 to the oil outlet 12.
Wherein, it is fixed together by way of being spirally connected between pressing plate 26 and valve body ontology 24.
It can be seen that after spool 5 moves down in conjunction with Fig. 3, Fig. 4 and Fig. 5, due to first conical surface 111 and second conical surface
511 form conical surface seal, and the fuel oil in fuel feed hole 11 just cannot be introduced into the cavity 16, can not also flow into oil outlet 12
In.After spool 5 moves up, the second auxiliary section 52 is moved into the second mounting hole 22, and first auxiliary section 51 is with second
The movement of auxiliary section 52 and move, after the first auxiliary section 51 is mobile, separated between first conical surface 111 and second conical surface 511, shape
At the second gap, the fuel oil in fuel feed hole 11 is entered in the oil outlet 12 after through the second gap and cavity 16.
In addition in this application, it is contemplated that the gas in the first gap 31 is likely to occur leakage, therefore, in the valve body
Outer surface on be also provided with the gas off-take 23 for being connected to the cavity, positioned at the other side side of the piston 3 and the cavity
Gas between wall is discharged by the gas off-take 23.In this way, the effect of air intake duct 23 is when piston 3 moves upwards
Time can discharge the air of the cavity, if being not provided with gas off-take 23, when piston 3 moves upwards, the air of cavity can be pressed
Resistance is generated, the unlatching of piston 3 is slowed down.
In view of fuel oil may flow to valve seat 1 and valve body by the gap between the second auxiliary section 52 and the first mounting hole 13
Between mating surface, as shown in Fig. 2, having the third space 14 passed through for fuel oil, the valve between the valve seat 1 and the valve body
The outer surface of seat 1 is equipped with the axial groove 15 for being connected to the third space 14.In this way, the fuel oil flowing at the third space 14 can
To be back in the fuel tank of fuel system by axial groove 15.
As shown in Fig. 2, being arranged with first on the piston 3 to improve the sealing performance of the fuel oil gas control stop valve
Sealing ring 32 and the second sealing ring 33, first sealing ring 32 cooperate with the cavity, second sealing ring 33 with it is described
The cooperation of second mounting hole 22.In this way, the leakage of gas and fuel oil can be prevented.As shown in Fig. 2, due to first sealing ring 32
Setting, so that piston 3 is not easy to split out from valve body ontology 24, it can be by drawing the bolt 262 installed on piston 3
It pulls out, realizes the extraction to piston 3.
As shown in Fig. 2, on the outer surface of the valve body in axial direction on be arranged with third sealing ring 28.Third sealing
Circle 28 is arranged to improve the sealing performance between valve body and exterior part.
As shown in Fig. 2, the air intake duct 21 includes the first air intake duct being laterally arranged in pressing plate 26, longitudinally disposed second
Air intake duct (it is connected to the first air intake duct), longitudinally disposed third air intake duct (itself and the second air intake duct in valve body ontology 24
Connection), and it is connected to the 4th air intake duct (it is connected to third air intake duct) in the first gap 31, gas is in pressing plate in order to prevent
Leaked between 26 and valve body ontology 24, the valve body ontology 24 towards on the end face of pressing plate 26 this 4th sealing ring is installed
29, the 4th sealing ring 29 wraps the 4th air intake duct, realizes the sealing between pressing plate 26 and valve body ontology 24.
The above scheme of the utility model, engine be in an emergency parking need to carry out pressure release when, by manual
The Outer enclosing member of 261 side of air inlet is opened, so that external compressed gas enters in valve body, piston 3 is pushed to move,
So that spool 5 pushes spool 5 mobile under the action of fuel pressure, fuel feed hole 11 and oil outlet 12 is connected, realizes fuel oil
Pressure release.
Claims (8)
1. a kind of fuel oil gas control stop valve characterized by comprising
Valve seat (1) comprising interconnected fuel feed hole (11), oil outlet (12) and the first mounting hole (13)；
Valve body is internally provided with cavity, and the air intake duct of the cavity is opened up and be connected to from the outer surface of the valve body
(21) and the second mounting hole (22)；
Piston (3), setting in the cavity, and part be inserted in second mounting hole (22), the piston (3) with
There is the first gap (31) entered for the air in the air intake duct (21) between first cavity wall of the cavity；
Pressure spring (4) is set between the second cavity wall of the cavity and the piston (3)；
Spool (5) is inserted in the fuel feed hole (11) and first mounting hole (13), and opposite with the piston (3)
Setting；
When entering gas in the air intake duct (21), the piston (3) moves up under the active force of gas, the spool
(5) it is moved under the action of input pressure into second mounting hole (22), the fuel feed hole (11) and the oil outlet
(12) it is switched on, the fuel oil in fuel feed hole (11) is outflowed by the oil outlet (12)；
When not entering gas in the air intake duct (21), the effect of bounce of the piston (3) in the pressure spring (4)
Under move down, the piston (3) pushes moves in spool (5) first mounting hole of Xiang Suoshu (13), the fuel feed hole
(11) it is blocked with the oil outlet (12), blocks the fuel oil outflow in fuel feed hole (11).
2. fuel oil gas control stop valve according to claim 1, which is characterized in that the fuel feed hole (11), the oil outlet
(12) there are cavity (16) between first mounting hole (13), at the position that the fuel feed hole (11) is connected to the cavity
With first conical surface (111)；The spool (5) includes:
First auxiliary section (51), first auxiliary section (51), which has, forms the of conical surface seal with first conical surface (111)
Two conical surfaces (511)；
With the second auxiliary section (52) of first mounting hole (13) cooperation, the first auxiliary section (51) connection described second is matched
Conjunction portion (52)；
When being moved under the action of the spool (5) is in input pressure into the second mounting hole (22), first auxiliary section
(51) it partially enters in first mounting hole (13), is formed between first conical surface (111) and second conical surface (511)
Second gap flows to the fuel oil in fuel feed hole (11) afterwards to the oil outlet by second gap and the cavity (16)
(12)。
3. fuel oil gas control stop valve according to claim 1, which is characterized in that be also provided on the outer surface of the valve body
It is connected to the gas off-take (23) of the cavity, the gas between the piston (3) and the other side side wall of the cavity is logical
The gas off-take (23) is crossed to discharge.
4. fuel oil gas control stop valve according to claim 1, which is characterized in that the valve body includes:
Valve body ontology (24), second mounting hole (22) is set on the valve body ontology (24), and the valve body ontology
(24) it is additionally provided with the third mounting hole (25) being connected to second mounting hole (22) on, the piston (3) is from the third
Mounting hole (25) is inserted in second mounting hole (22)；
The pressing plate (26) being installed on the valve body ontology (24), the pressing plate (26) is towards the end face of the valve body ontology (24)
On be provided with fourth mounting hole (27) opposite with the third mounting hole (25), the third mounting hole (25) and the described 4th
Mounting hole (27) forms the cavity；
One end of the pressure spring (4) is fixed on the piston (3), and the other end is fixed on the 4th mounting hole (27)
On hole wall.
5. fuel oil gas control stop valve according to claim 1, which is characterized in that have between the valve seat (1) and the valve body
There is the third space (14) passed through for fuel oil, the outer surface of the valve seat (1) is equipped with the axis for being connected to the third space (14)
To slot (15).
6. fuel oil gas control stop valve according to claim 1, which is characterized in that it is close to be arranged with first on the piston (3)
Seal (32) and the second sealing ring (33), first sealing ring (32) and the cavity cooperate, second sealing ring (33)
Cooperate with second mounting hole (22).
7. fuel oil gas control stop valve according to claim 1, which is characterized in that along axial side on the outer surface of the valve body
It is arranged with third sealing ring (28) upwards.
8. fuel oil gas control stop valve according to claim 4, which is characterized in that the pressing plate (26) and the valve body ontology
(24) it is spirally connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822135776.0U CN209146336U (en) | 2018-12-19 | 2018-12-19 | A kind of fuel oil gas control stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822135776.0U CN209146336U (en) | 2018-12-19 | 2018-12-19 | A kind of fuel oil gas control stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209146336U true CN209146336U (en) | 2019-07-23 |
Family
ID=67290382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822135776.0U Active CN209146336U (en) | 2018-12-19 | 2018-12-19 | A kind of fuel oil gas control stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209146336U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442047A (en) * | 2018-12-19 | 2019-03-08 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
-
2018
- 2018-12-19 CN CN201822135776.0U patent/CN209146336U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109442047A (en) * | 2018-12-19 | 2019-03-08 | 重庆红江机械有限责任公司 | A kind of fuel oil gas control stop valve |
| CN109442047B (en) * | 2018-12-19 | 2023-12-19 | 重庆红江机械有限责任公司 | Fuel gas control stop valve |
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