CN206503983U - Plunger type single-stage EFI pressure-reducing valve - Google Patents
Plunger type single-stage EFI pressure-reducing valve Download PDFInfo
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- CN206503983U CN206503983U CN201720067156.0U CN201720067156U CN206503983U CN 206503983 U CN206503983 U CN 206503983U CN 201720067156 U CN201720067156 U CN 201720067156U CN 206503983 U CN206503983 U CN 206503983U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model is related to pressure-reducing valve, it is big for lever EFI pressure reducer volume, heating effect is poor, flow is small, the shortcoming of autgmentability difference, disclose plunger type single-stage EFI pressure-reducing valve, the pressure regulation chamber set gradually including decompression pressure regulation unit and under up to, low-pressure chamber, high-pressure chamber, the low-pressure chamber connects with outlet passageway, high-pressure chamber and inlet channel, outlet passageway is respectively communicated with, the decompression pressure regulation unit includes plunger valve core bar, to the stopping means for controlling the elastic device of plunger type valve core rod axial movement and coordinating with valve core rod, plunger valve core bar dynamically adjusts the current rate for flowing to outlet passageway from high-pressure chamber and then realizes decompression when doing piston movement vertically.The utility model has small volume, the beneficial effect that heating effect is good, flow is big, autgmentability is strong compared with prior art.
Description
Technical field
The utility model is related to pressure-reducing valve, and in particular to a kind of plunger type single-stage EFI pressure-reducing valve
Background technology
Cleaning, efficient, energy-conservation, low emission are CNG (Compressed Natural Gas, compressed natural gas) control systems
Developing direction, conventional proportion expression product mix can slowly withdraw from the market, and high-pressure electronic injection control more precisely turns into master
Manifold formula.In Devoting Major Efforts To Developing gas engine state V standards supporting period, conventional EFI pressure reducer structure is all traditional lever
Formula, lever EFI pressure reducer volume is big, heating effect is poor, flow is small, autgmentability is poor, it is impossible to adapt to industry trend.
Utility model content
For lever EFI pressure reducer volume is big, the shortcoming that heating effect is poor, flow is small, autgmentability is poor, this practicality is new
Type discloses plunger type single-stage EFI pressure-reducing valve, and pressure-reducing valve is using single-stage plunger type decompressor and is provided with, with compact,
Heating effect is good, big flow is exported, the convenient advantage for carrying out Function Extension.
The utility model is achieved through the following technical solutions：
Plunger type single-stage EFI pressure-reducing valve, including decompression pressure regulation unit and the pressure regulating cavity that sets gradually under up to
Room, low-pressure chamber, high-pressure chamber, the low-pressure chamber connect with outlet passageway, high-pressure chamber and inlet channel, outlet passageway point
Do not connect, the decompression pressure regulation unit includes plunger valve core bar, the elasticity dress to control plunger type valve core rod to be axially moved
The stopping means put and coordinated with valve core rod, is dynamically adjusted when plunger valve core bar does piston movement vertically from high-pressure chamber's stream
Decompression is then realized to the current rate of outlet passageway.
Principle of the present utility model is, by between plunger valve core bar dynamic control plunger valve core bar and stopping means
Airflow clearance then realize decompression, compared with traditional lever pressure regulation unit, motion is simple, compact conformation, passes through one-level
Decompression air flow losses are small, and output flow is big.
Further, the elastic device includes low-pressure end elastic device and high-pressure side elastic device, low pressure elastic device
For the diaphragm being located between low-pressure chamber and pressure regulation chamber and the pressure spring being located in pressure regulating cavity room, the low-pressure chamber is by film
Valve body under piece and diaphragm surrounds composition, and pressure regulation end cap of the pressure regulation chamber on diaphragm and diaphragm, which is surrounded, to be constituted, plunger type
Valve core rod is provided with diaphragm connecting shaft, and plunger valve core bar is connected with diaphragm connecting shaft coupling type, the diaphragm connecting shaft and film
Piece is connected, and diaphragm drives plunger valve core bar vertically under the collective effect of gas pressure and elastic device through diaphragm connecting shaft
Pressure balance aperture is provided with motion, valve body.Pressure oscillation is fed back to simultaneously by low-pressure end elastic device by pressure balance aperture
Drive plunger valve core bar to do corresponding actions with stable output pressure through diaphragm connecting shaft, reduce fluctuation.
Further, the high-pressure side elastic device is the holddown spring being located in high-pressure chamber, the high-pressure chamber by
The one-level end cap being located under valve body surrounds composition, and the stopping means is the valve port seat being located on one-level end cap, and high-pressure chamber leads to
Cross valve port seat to connect with outlet passageway, plunger valve core bar is dynamically adjusted from high-pressure chamber through valve port when doing piston movement vertically
The current rate that seat flows to outlet passageway then realizes decompression；Valve element guide holder is provided with one-level end cap, valve element guide holder is divided into
There is guide holder pressing plate, the plunger valve core bar is connected with holddown spring by the valve core spring seat in guide holder pressing plate, compressed
Spring has hold-down bolt, and hold-down bolt is connected through a screw thread with one-level end cap.High-pressure side elastic device and low-pressure end elasticity
Device, which coordinates, makes pressure regulation process stabilization reliable.
Further, one-level end cap is provided with heat cycles water swivel, is provided with valve body around low-pressure chamber at least one week
The cyclic water channel being connected with heat cycles water swivel, is provided with gasket seal, heat cycles water between valve body and one-level end cap end face
The 12nd O-ring seal is provided between joint and one-level end cap.Set cyclic water channel and heat cycles water swivel can be to low pressure
Natural gas in chamber is heated, and effective anti-stagnant ice is blocked up, and sets gasket seal and the 12nd O-ring seal can anti-leak-stopping
Water.
Further, valve body, one-level end cap, pressure regulation end cap are fastened as a whole by screw, are set on valve body and one-level end cap
There is installation screwed hole.Function Extension can be easily carried out by installing screwed hole.
Further, voltage adjusting end is covered provided with the vacuum adapter being connected with engine inlets.Set and engine charge
The vacuum adapter of road connection can act on the admission pressure of engine on diaphragm, and the utility model is exported when admission pressure changes
Respective change also occurs for pressure so that gaseous-pressure matches with engine operating condition.
Further, the inlet channel is located in one-level end cap, and one-level end cap is provided with entering for being connected with inlet channel
Gas joint, the outlet passageway is located in valve body, and outlet passageway two ends are respectively equipped with air outlet adapter and safety valve.Safety valve is set
Overvoltage protection can be played a part of.
Further, the valve body has been connected through a screw thread diaphragm axle sleeve, and the axial movement of the diaphragm connecting shaft passes through
Diaphragm axle sleeve is defined, and diaphragm connecting shaft passes through the 7th O-ring seal dynamic radial seal, diaphragm axle sleeve and valve with diaphragm axle sleeve
Body is threadedly coupled and sealed by the 6th O-ring seal；Diaphragm upper and lower end face is respectively equipped with diaphragm spring seat and diaphragm lower platen,
Diaphragm, diaphragm spring seat and diaphragm lower platen are fixed on diaphragm in succession on axle by nut, diaphragm lower platen and diaphragm connecting shaft
It is middle to be sealed by the 5th O-ring seal, spring washer and plain cushion are provided between nut and diaphragm spring seat；Set on pressure regulation end cap inwall
There is pressure spring seat, pressure spring upper and lower ends are respectively acting on pressure spring seat and diaphragm spring seat, and pressure spring seat passes through
First O-ring seal and pressure regulation end cap dynamic radial seal, pressure spring seat are provided with the tune for being used for adjusting pressure spring decrement
Press screw.The setting of any of the above sealing ring, spring washer and plain cushion can ensure seal, make pressure regulation process smooth.
Further, the 3rd O-ring seal radial seal, hold-down bolt and one-level end are passed through between one-level end cap and valve body
Lid is sealed by the 4th O-ring seal radial seal, valve port seat with one-level end cap by the 8th O-ring seal, plunger type valve element
Bar passes through the tenth O-ring seal dynamic radial seal with valve element guide holder.The setting of above sealing ring can ensure high-pressure chamber
Seal.
The utility model compared with prior art, has the following advantages and advantages：
1st, small volume, the utility model carries out Decompression Controlling by plunger valve core bar, with traditional Lever reducing valve phase
Than simple and compact for structure, small volume；
2nd, heating effect is good, sets cyclic water channel and heat cycles water swivel to be carried out to the natural gas in low-pressure chamber
Heating, effective anti-stagnant ice is blocked up；
3rd, flow is big, and small by one-level decompression air flow losses, output flow is big, can meet high-power EFI state V discharges
Engine calls；
4th, autgmentability is strong, and autgmentability can be flexibly matched with according to actual needs by force for each interface dimensions, coordinate valve body and one
The convenient installation strong adaptability of installation screwed hole on level end cap, can easily carry out Function Extension.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the utility model plunger type single-stage EFI pressure-reducing valve internal structure schematic diagram；
Fig. 2 is the utility model plunger type single-stage EFI pressure-reducing valve front view；
Fig. 3 is Fig. 2 right view；
Fig. 4 is Fig. 2 rearview.
Mark and corresponding parts title in accompanying drawing：
1- pressure regulating screws, 2- pressure regulation end caps, 3- pressure springs seat, the O-ring seals of 4- first, 5- pressure springs, 6- nuts,
7- spring washers, 8- plain cushions, 9- safety valves, 11- valve bodies, the O-ring seals of 12- the 3rd, 13- one-level end caps, 14- guide holder pressing plates, 15-
4th O-ring seal, 16- hold-down bolts, 17- heat cycles water swivels, 18- diaphragm connecting shafts, the O-ring seals of 19- the 5th,
20- diaphragm spring seats, 21- diaphragms, 22- diaphragm lower platens, 23- diaphragm axle sleeves, the O-ring seals of 24- the 6th, 25- the 7th is O-shaped close
Seal, 26- air outlet adapters, 27- plunger valve core bars, the O-ring seals of 28- the 8th, 29- valve ports seat, 32- valve element guide holders, 33-
Tenth O-ring seal, 35- valve core springs seat, 36- holddown springs, 37- vacuum adapters, 38- gasket seals, 39- the 12nd is O-shaped
Sealing ring, 51- inlet channels, 52- outlet passageways, 53- high-pressure chamber, 54- low-pressure chamber, 55- pressure regulation chambers, 57- pressure is put down
Weigh aperture, and 58- cyclic water channels, 59- installs screwed hole, 61- inlet suction ports.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, is not intended as limiting of the present utility model.
Embodiment one：
As shown in Figures 1 to 4, the utility model plunger type single-stage EFI pressure-reducing valve, including decompression pressure regulation unit and from
Pressure regulation chamber 55, low-pressure chamber 54, high-pressure chamber 53, the low-pressure chamber 54 and the outlet passageway 52 set gradually under up to
Connection, high-pressure chamber 53 is respectively communicated with inlet channel 51 and outlet passageway 52, and the decompression pressure regulation unit includes plunger valve
Core bar 27, the elastic device to control the axial movement of plunger type valve core rod 27 and the stopping means coordinated with valve core rod 27, post
Plug valve core rod 27 dynamically adjusted when doing piston movement vertically from high-pressure chamber 53 flow to the current rate of outlet passageway 52 after
And realize decompression.
The elastic device includes low-pressure end elastic device and high-pressure side elastic device, and low pressure elastic device is to be located at low pressure
Diaphragm 21 between chamber 54 and pressure regulation chamber 55 and the pressure spring 5 being located in pressure regulation chamber 55, the low-pressure chamber 54 by
Valve body 11 under diaphragm 21 and diaphragm 21 surrounds composition, pressure regulation end cap 2 of the pressure regulation chamber 55 on diaphragm 21 and diaphragm 21
Composition is surrounded, plunger valve core bar 27 is provided with diaphragm connecting shaft 18, plunger valve core bar 27 and the coupling type of diaphragm connecting shaft 18
Connection, the diaphragm connecting shaft 18 is connected with diaphragm 21, and diaphragm 21 is under the collective effect of gas pressure and elastic device through film
Piece connecting shaft 18 drives plunger valve core bar 27 axially movable, and pressure balance aperture 57 is provided with valve body 11.It is flat by pressure
Pressure oscillation is fed back to low-pressure end elastic device and drives plunger valve core bar 27 to do phase through diaphragm connecting shaft 18 by weighing apparatus aperture 57
It should act with stable output pressure, reduce fluctuation.
The high-pressure side elastic device is the holddown spring 36 being located in high-pressure chamber 53, and the high-pressure chamber 53 is by being located at
One-level end cap 13 under valve body 11 surrounds composition, and the stopping means is the valve port seat 29 being located on one-level end cap 13, high pressure chest
Room 53 is connected by valve port seat 29 with outlet passageway 52, is dynamically adjusted from height when plunger valve core bar 27 does piston movement vertically
The current rate that pressure chamber 53 flows to outlet passageway 52 through valve port seat 29 then realizes decompression；Led in one-level end cap 13 provided with valve element
To seat 32, valve element guide holder 32 has guide holder pressing plate 14, and the plunger valve core bar 27 passes through in guide holder pressing plate 14
Valve core spring seat 35 is connected with holddown spring 36, and holddown spring 36 has hold-down bolt 16, hold-down bolt 16 and one-level end cap
13 are connected through a screw thread.High-pressure side elastic device coordinates with low-pressure end elastic device makes pressure regulation process stabilization reliable.
One-level end cap 13 is provided with heat cycles water swivel 17, be provided with valve body 11 around low-pressure chamber 54 at least one week with
The cyclic water channel 58 that heat cycles water swivel 17 is connected, is provided with gasket seal 38 between valve body 11 and the end face of one-level end cap 13, plus
The 12nd O-ring seal 39 is provided between heat recirculated water joint 17 and one-level end cap 13.Cyclic water channel 58 and heat cycles are set
Water swivel 17 can be heated to the natural gas in low-pressure chamber 54, and effective anti-stagnant ice is blocked up, and sets gasket seal 38 and the tenth
Two O-ring seals 39 can prevent leak.
Valve body 11, one-level end cap 13, pressure regulation end cap 2 are fastened as a whole by screw, are set on valve body 11 and one-level end cap 13
There is installation screwed hole 59, Function Extension can be easily carried out by installing screwed hole 59；Pressure regulation end cap 2 is provided with and engine
The vacuum adapter 37 of air intake duct connection, sets the vacuum adapter 37 being connected with engine inlets can be by the air inlet pressure of engine
Power acts on diaphragm 21, and respective change also occurs for the utility model output pressure when admission pressure changes so that gaseous-pressure with
Engine operating condition matches；Inlet channel 51 is located in one-level end cap 13, and one-level end cap 13 is provided with and is connected with inlet channel 51
Inlet suction port 61, the outlet passageway 52 be located at valve body 11 in, the two ends of outlet passageway 52 be respectively equipped with air outlet adapter 26 and peace
Full valve 9, sets safety valve 9 to play a part of overvoltage protection.
Valve body 11 has been connected through a screw thread diaphragm axle sleeve 23, and the axial movement of the diaphragm connecting shaft 18 passes through diaphragm axle sleeve
23 are defined, diaphragm connecting shaft 18 and diaphragm axle sleeve 23 by the dynamic radial seal of the 7th O-ring seal 25, diaphragm axle sleeve 23 with
Valve body 11 is threadedly coupled and sealed by the 6th O-ring seal 24；The upper and lower end face of diaphragm 21 is respectively equipped with the He of diaphragm spring seat 20
Diaphragm lower platen 22, diaphragm 21, diaphragm spring seat 20 and diaphragm lower platen 22 are fixed on diaphragm in succession on axle 18 by nut 6,
Diaphragm lower platen 22 in the middle of diaphragm connecting shaft 18 by the 5th O-ring seal 19 with being sealed, between nut 6 and diaphragm spring seat 20
Provided with spring washer 7 and plain cushion 8；The inwall of pressure regulation end cap 2 is provided with pressure spring seat 3, and the upper and lower ends of pressure spring 5 are respectively acting on tune
Pressing spring seat 3 and diaphragm spring seat 20, pressure spring seat 3 are adjusted by the first O-ring seal 4 and the dynamic radial seal of pressure regulation end cap 2
Pressing spring seat 3 is provided with the pressure regulating screw 1 for being used for adjusting the decrement of pressure spring 5.Any of the above sealing ring, spring washer 7 and plain cushion 8
Setting can ensure seal, make pressure regulation process smooth.
By the radial seal of the 3rd O-ring seal 12 between one-level end cap 13 and valve body 11, hold-down bolt 16 and one-level end
Lid 13 is sealed by the radial seal of the 4th O-ring seal 15, valve port seat 29 with one-level end cap 13 by the 8th O-ring seal 28,
Plunger valve core bar 27 passes through the dynamic radial seal of the tenth O-ring seal 33 with valve element guide holder 32.The setting of above sealing ring can
To ensure the seal of high-pressure chamber 53.
High-pressure gas enters high-pressure chamber 53, high compression ignition from inlet suction port 61 through inlet channel 51 when the utility model is used
Gas enters low-pressure chamber 54 through the gap between plunger valve core bar 27 and valve port seat 29, and through outlet passageway 52 from air outlet adapter
26 flow out to engine spray rail accurately controls engine air-fuel ratio by electric injection system, and stable pressure ensures that fully burning is favourable
In the service efficiency and the reduction more energy efficient environmental protection of pollutant emission that improve fuel；When input pressure is excessive, combustion gas is flat through pressure
Weighing apparatus aperture 57 and diaphragm 21, which are acted on, then drives plunger valve core bar 27 to move up, reduce plunger valve core bar 27 and valve port 29 it
Between gap then realize decompression；Operating pressure of the present utility model is adjusted through pressure regulating screw 1, and the setting of vacuum adapter 37 can be with
Output pressure is set to meet requirement, the setting of safety valve 9 can carry out overvoltage protection.
The utility model has small volume, the beneficial effect that heating effect is good, flow is big, autgmentability is strong compared with prior art
Really：The utility model carries out Decompression Controlling by plunger valve core bar 27, simply tight with traditional Lever reducing valve structure compared
Gather, small volume；Cyclic water channel 58 and heat cycles water swivel 17 is set to be heated to the natural gas in low-pressure chamber 54,
Effective anti-stagnant ice is blocked up；Small using one-level decompression air flow losses, output flow is big, can meet high-power EFI state V discharges and start
It is confidential to ask；Autgmentability can be flexibly matched with according to actual needs by force for each interface dimensions, coordinate on valve body 11 and one-level end cap 13
Installation screwed hole 59 it is convenient strong adaptability is installed, can easily carry out Function Extension.
Above-described embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect
One step is described in detail, be should be understood that and be the foregoing is only embodiment of the present utility model, is not used to limit
Fixed protection domain of the present utility model, all any modifications within spirit of the present utility model and principle, made, is equally replaced
Change, improve, should be included within protection domain of the present utility model.
Claims (9)
1. plunger type single-stage EFI pressure-reducing valve, including decompression pressure regulation unit and the pressure regulation chamber that sets gradually under up to
(55), low-pressure chamber (54), high-pressure chamber (53), the low-pressure chamber (54) connect with outlet passageway (52), high-pressure chamber
(53) it is respectively communicated with inlet channel (51), outlet passageway (52), it is characterised in that：The decompression pressure regulation unit includes plunger type
Valve core rod (27), to control plunger type valve core rod (27) be axially moved elastic device and with valve core rod (27) coordinate it is spacing
Device, plunger valve core bar (27) dynamically adjusts from high-pressure chamber (53) when doing piston movement vertically and flows to outlet passageway (52)
Current rate then realize decompression.
2. plunger type single-stage EFI pressure-reducing valve according to claim 1, it is characterised in that the elastic device includes low pressure
Elastic device and high-pressure side elastic device are held, low pressure elastic device is to be located between low-pressure chamber (54) and pressure regulation chamber (55)
Diaphragm (21) and the pressure spring (5) being located in pressure regulation chamber (55), the low-pressure chamber (54) is by diaphragm (21) and diaphragm
(21) valve body (11) under surrounds composition, pressure regulation end cap (2) of the pressure regulation chamber (55) on diaphragm (21) and diaphragm (21)
Composition is surrounded, plunger valve core bar (27) is provided with diaphragm connecting shaft (18), plunger valve core bar (27) and diaphragm connecting shaft
(18) coupling type is connected, and the diaphragm connecting shaft (18) is connected with diaphragm (21), and diaphragm (21) is in gas pressure and elastic device
Collective effect under drive plunger valve core bar (27) axially movable through diaphragm connecting shaft (18), pressure is provided with valve body (11)
Balance aperture (57).
3. plunger type single-stage EFI pressure-reducing valve according to claim 2, it is characterised in that the high-pressure side elastic device is
It is located at the holddown spring (36) in high-pressure chamber (53), the high-pressure chamber (53) is by the one-level end cap that is located under valve body (11)
(13) composition is surrounded, the stopping means is the valve port seat (29) being located on one-level end cap (13), and high-pressure chamber (53) passes through valve
Mouth seat (29) is connected with outlet passageway (52), and plunger valve core bar (27) is dynamically adjusted from high pressure chest when doing piston movement vertically
The current rate that room (53) flows to outlet passageway (52) through valve port seat (29) then realizes decompression；Valve is provided with one-level end cap (13)
Core guide holder (32), valve element guide holder (32) has guide holder pressing plate (14), and the plunger valve core bar (27) is by being oriented to
Valve core spring seat (35) in seat pressing plate (14) is connected with holddown spring (36), and holddown spring (36) has hold-down bolt
(16), hold-down bolt (16) is connected through a screw thread with one-level end cap (13).
4. plunger type single-stage EFI pressure-reducing valve according to claim 3, it is characterised in that one-level end cap (13), which is provided with, to be added
Heat recirculated water joint (17), is provided with valve body (11) around low-pressure chamber (54) at least one week and heat cycles water swivel (17) company
The cyclic water channel (58) connect, is provided with gasket seal (38) between valve body (11) and one-level end cap (13) end face, heat cycles water connects
The 12nd O-ring seal (39) is provided between head (17) and one-level end cap (13).
5. the plunger type single-stage EFI pressure-reducing valve according to claim 3 or 4, it is characterised in that valve body (11), one-level end cap
(13), pressure regulation end cap (2) is fastened as a whole by screw, and valve body (11) and one-level end cap (13) are provided with installation screwed hole
(59)。
6. plunger type single-stage EFI pressure-reducing valve according to claim 5, it is characterised in that pressure regulation end cap (2) be provided with
The vacuum adapter (37) of engine inlets connection.
7. the plunger type single-stage EFI pressure-reducing valve according to any one of claim 3,4,6, it is characterised in that the air inlet
Passage (51) is located in one-level end cap (13), and one-level end cap (13) is provided with the inlet suction port being connected with inlet channel (51)
(61), the outlet passageway (52) is located in valve body (11), and outlet passageway (52) two ends are respectively equipped with air outlet adapter (26) and peace
Full valve (9).
8. plunger type single-stage EFI pressure-reducing valve according to claim 7, it is characterised in that the valve body (11) passes through screw thread
Diaphragm axle sleeve (23) is connected with, the axial movement of the diaphragm connecting shaft (18) is defined by diaphragm axle sleeve (23), diaphragm
Connecting shaft (18) passes through the 7th O-ring seal (25) dynamic radial seal, diaphragm axle sleeve (23) and valve body with diaphragm axle sleeve (23)
(11) it is threadedly coupled and passes through the 6th O-ring seal (24) and seals；Diaphragm (21) upper and lower end face is respectively equipped with diaphragm spring seat
(20) and diaphragm lower platen (22), diaphragm (21), diaphragm spring seat (20) and diaphragm lower platen (22) are fixed on by nut (6)
In diaphragm connecting shaft (18), diaphragm lower platen (22) is middle by the sealing of the 5th O-ring seal (19) with diaphragm connecting shaft (18),
Spring washer (7) and plain cushion (8) are provided between nut (6) and diaphragm spring seat (20)；Pressure regulation end cap (2) inwall is provided with pressure spring
Seat (3), pressure spring (5) upper and lower ends are respectively acting on pressure spring seat (3) and diaphragm spring seat (20), pressure spring seat
(3) by the first O-ring seal (4) and pressure regulation end cap (2) dynamic radial seal, pressure spring seat (3) is provided with to be used to adjust and adjusted
The pressure regulating screw (1) of pressing spring (5) decrement.
9. the plunger type single-stage EFI pressure-reducing valve according to any one of claim 3,4,6,8, it is characterised in that one-level end
Cover between (13) and valve body (11) by the 3rd O-ring seal (12) radial seal, hold-down bolt (16) and one-level end cap (13)
By the 4th O-ring seal (15) radial seal, valve port seat (29) and one-level end cap (13) are close by the 8th O-ring seal (28)
Envelope, plunger valve core bar (27) passes through the tenth O-ring seal (33) dynamic radial seal with valve element guide holder (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067156.0U CN206503983U (en) | 2017-01-19 | 2017-01-19 | Plunger type single-stage EFI pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720067156.0U CN206503983U (en) | 2017-01-19 | 2017-01-19 | Plunger type single-stage EFI pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206503983U true CN206503983U (en) | 2017-09-19 |
Family
ID=59839684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720067156.0U Expired - Fee Related CN206503983U (en) | 2017-01-19 | 2017-01-19 | Plunger type single-stage EFI pressure-reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206503983U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340444A (en) * | 2018-11-07 | 2019-02-15 | 成都恩吉威汽车系统有限公司 | Vehicle CNG pressure reducer |
| CN110630790A (en) * | 2019-08-29 | 2019-12-31 | 南京伟易达机电科技发展有限公司 | High-pressure piston group |
-
2017
- 2017-01-19 CN CN201720067156.0U patent/CN206503983U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109340444A (en) * | 2018-11-07 | 2019-02-15 | 成都恩吉威汽车系统有限公司 | Vehicle CNG pressure reducer |
| CN110630790A (en) * | 2019-08-29 | 2019-12-31 | 南京伟易达机电科技发展有限公司 | High-pressure piston group |
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