CN107816568A - A kind of pressure-reducing valve - Google Patents
A kind of pressure-reducing valve Download PDFInfo
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- CN107816568A CN107816568A CN201711106188.8A CN201711106188A CN107816568A CN 107816568 A CN107816568 A CN 107816568A CN 201711106188 A CN201711106188 A CN 201711106188A CN 107816568 A CN107816568 A CN 107816568A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/385—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a diaphragm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K39/00—Devices for relieving the pressure on the sealing faces
- F16K39/02—Devices for relieving the pressure on the sealing faces for lift valves
- F16K39/024—Devices for relieving the pressure on the sealing faces for lift valves using an auxiliary valve on the main valve
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of pressure-reducing valve, air inlet, gas outlet and connection air inlet and the valve port of gas outlet are formed in first valve body, valve rod is equiped with first valve body, valve rod lower end is fixedly connected with opens and closes the piston coordinated with valve port, first valve body lower end is connected with spring base, the first spring is equiped with spring base, the first valve body upper end is connected with lid, and the upper end of upper lid is connected with pressure regulator valve；Pressure regulator valve includes the second valve body, second spring, valve element, valve seat, air outlet valve, guidance set, the 3rd spring, piston rod, diaphragm unit, the 4th spring, spring housing, adjusting rod, end cap and adjustment cap, piston rod is in hollow setting, the wall of piston rod is provided with the first through hole connected with middle part, and first through hole coordinates with closure in the middle part of air outlet valve.The problem of pressure-reducing valve caused by the present invention can prevent in valve body that air pressure is excessive and cause rupture of diaphragm can not use.
Description
Technical field
The present invention relates to voltage-regulating technique field, more particularly to a kind of pressure-reducing valve.
Background technology
Pressure-reducing valve is the outlet pressure that inlet pressure is reduced to a certain needs by regulation, and relies on the energy of medium in itself
Amount, outlet pressure is set to keep stable valve automatically.Pressure-reducing valve is the restricting element that a local resistance can change, that is, is passed through
Change orifice size, change the kinetic energy of flow velocity and fluid, the different pressure losses is caused, so as to reach the purpose of decompression.
Effectively to store a large amount of gases, will be typically stored in after gas compression in air accumulator, therefore gas pressure in air accumulator
It is higher, but gas is smaller using gas pressure needed for equipment, air delivery device and gas equipment gas pressure difference thus be present
The problem of different larger, therefore need effectively to adjust gas pressure, safety gas is realized, pressure-reducing valve is used to adjust air pressure
Section.
In prior art, when air accumulator has just connected pressure-reducing valve, gas from air accumulator be input to pressure-reducing valve during air pressure
Larger compared with concentrating, if diaphragm unit movement is driven in air flow collection, air pressure easily makes diaphragm displacement excessive, causes rupture of diaphragm,
Cause pressure-reducing valve can not adjust decompression.
The content of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of pressure-reducing valve, piston rod is in hollow
Set, the wall of piston rod is provided with the first through hole connected with middle part, and first through hole coordinates with closure in the middle part of air outlet valve, piston rod
Left end and the middle part of diaphragm unit grafting cooperation and diaphragm unit be provided with third through-hole with being connected in the middle part of piston rod, threeway
Hole connects with first chamber, and end cap is provided with the steam vent connected with first chamber, ensure that the air pressure in upper chamber is normal, prevents
Only primary diaphragm rupture causes pressure-reducing valve not use.
To achieve the above object, the present invention uses following technical scheme.
A kind of pressure-reducing valve of the present invention, including the first valve body, form in the first valve body air inlet, gas outlet and
Air inlet and the valve port of gas outlet are connected, is equiped with valve rod in the first valve body, valve rod upper end is stretched at outside the first valve body, valve rod
Lower end is fixedly connected with opens and closes the piston coordinated with valve port, and the first valve body lower end is connected with spring base, and the is equiped with spring base
One spring, the first spring, which supports, to be located between piston and spring base, and the first valve body upper end is connected with lid, upper lid and the first valve body it
Between formed with membrane cavity, be equiped with membrane cavity and membrane cavity be separated into the primary diaphragm of upper chamber and lower chambers and fixed primary diaphragm
Diaphragm seat, be located in diaphragm seat in the middle part of primary diaphragm, the periphery of primary diaphragm is located between lid and the first valve body,
In the guide groove covered in the upper end insertion of diaphragm seat, the lower end of diaphragm seat is flexibly connected with the upper end of valve rod, lower chambers and outlet
Mouth conducting, the upper end of upper lid is connected with pressure regulator valve；
Pressure regulator valve includes the second valve body, second spring, valve element, valve seat, air outlet valve, guidance set, the 3rd spring, piston rod, film
Piece component, the 4th spring, spring housing, adjusting rod, end cap and adjustment cap, the second valve body are provided with the air admission hole connected with air inlet
And the venthole connected with upper chamber, second spring, valve element, valve seat, air outlet valve, guidance set, the 3rd spring and diaphragm group
Sequentially string is in the second valve body from right to left for part, and piston rod is from left to right sequentially through diaphragm unit, the 3rd spring, guiding group
Offseted after part, air outlet valve and valve seat with valve element, end cap is fixed on the left end of the second valve body and fixes diaphragm unit, valve seat, leads
Inwall to component with the second valve body is fixed, and regulation bar part is inserted in end cap, and the outer end of adjustment cap and adjusting rod is fixed
Connection, spring housing are threadedly coupled with the inner end of adjusting rod, and spring housing supports along end cap lateral displacement, the 4th spring and is located at diaphragm unit
Between spring housing；Piston rod is in hollow setting, and the wall of piston rod is provided with first through hole connect with middle part, first through hole and
Closure cooperation in the middle part of air outlet valve, the left end of piston rod and the middle part of diaphragm unit grafting cooperation and diaphragm unit are provided with and piston rod
The third through-hole of middle part connection, the middle part of valve seat are provided with the second through hole passed through for piston rod, the second through hole and valve element of valve seat
Closure coordinates, formed with first chamber, diaphragm unit, guidance set and the second valve interior wall between end cap and diaphragm unit formation
Between formed with second chamber, formed with the 3rd chamber, valve seat and the second valve between guidance set, valve seat and the second valve interior wall
Formed with the 4th chamber between internal wall, end cap is provided with the steam vent connected with first chamber, and second chamber is logical by second
Road is connected with venthole, and the 3rd chamber is connected by third channel with venthole, and the 4th chamber connects with air admission hole, in piston rod
The left end in portion is connected by third channel with first chamber, when air pressure balance in upper chamber, first through hole on piston rod with
Closure coordinates in the middle part of air outlet valve；
By operating adjustment cap, the 4th spring of compression makes diaphragm unit drive piston rod to move right, and second spring is by valve element pressure
Contracting, valve element and the second through hole depart from closure and coordinated, inlet charge, and gas passes sequentially through air admission hole, the 4th chamber, second led to
Hole, the 3rd chamber, third channel, venthole enter upper chamber, move down primary diaphragm band ovable valve stem, piston passes through the first spring
Depart from closure with valve port by compression to coordinate, air inlet is connected with gas outlet；When epicoele room pressure is excessive, gas passes through
Two passages promote diaphragm unit to the left, and diaphragm unit drives piston rod to move to left, and first through hole is matched somebody with somebody with departing from closure in the middle part of air outlet valve
Close, the gas in upper chamber enters the 3rd chamber, then the hollow bulb from first through hole, third through-hole and piston rod from third channel
Position enters first chamber, is finally discharged from first chamber to steam vent.
Further, diaphragm unit includes guide pipe, secondary diaphragm, tabletting, clasp and fixture, tabletting and secondary diaphragm
It is sheathed on successively on guide pipe from left to right, the left end of tabletting offsets with the 4th spring, and the inner circumferential of secondary diaphragm is folded in tabletting
Between guide pipe right-hand member, the periphery of clasp and the periphery of secondary diaphragm are folded between end cap and valve body successively, clasp it is interior
Week and the spacing cooperation in periphery of tabletting, fixture left end are arranged in the inner circumferential of guide pipe, the right-hand member of fixture and a left side for piston rod
Grafting is held to coordinate.
Further, connection is above covered with by venthole and the outlet passageway of upper chamber.
Further, the first valve body is provided with the inclined hole that connect with air inlet, is above covered with and connects entering for inclined hole and air admission hole
Gas passage.
Further, the airway tube of primary diaphragm is provided through on inlet channel.
Further, pressure regulator valve is fixedly connected with upper lid by pin.
The present invention has the beneficial effect that：Piston rod in the present invention is in hollow setting, and the wall of piston rod is provided with to be connected with middle part
Logical first through hole, first through hole coordinate with closure in the middle part of air outlet valve, left end and diaphragm unit grafting cooperation and the film of piston rod
The middle part of piece component is provided with the third through-hole with being connected in the middle part of piston rod, and third through-hole is connected with first chamber, and end cap is provided with
The steam vent connected with first chamber；When air pressure balance in upper chamber, the first through hole on piston rod in the middle part of air outlet valve with sealing
Stifled to coordinate, when epicoele room pressure is excessive, gas promotes diaphragm unit, diaphragm unit band piston to the left by second channel
Bar moves to left, and first through hole coordinates with departing from closure in the middle part of air outlet valve, and the gas in upper chamber enters the 3rd chamber from third channel,
Enter first chamber from the hollow part of first through hole, third through-hole and piston rod again, finally arranged from first chamber to steam vent
Go out；When air-flow is concentrated through venthole and enters upper chamber, epicoele room pressure driving primary diaphragm moves down, if epicoele room pressure
Excessive, air-flow can discharge from first through hole, third through-hole and steam vent, and the continuous deflation of first through hole can ensure in upper chamber
Air pressure it is normal, prevent primary diaphragm rupture cause pressure-reducing valve not use.The operation principle of the present invention is operation adjustment cap, is pressed
The 4th spring that contracts makes diaphragm unit drive piston rod to move right, and second spring is compressed by valve element, and valve element and the second through hole depart from
Closure coordinates, inlet charge, and gas passes sequentially through air admission hole, the 4th chamber, the second through hole, the 3rd chamber, third channel, gone out
Stomata enters upper chamber, moves down primary diaphragm band ovable valve stem, and piston is compressed by the first spring matches somebody with somebody with valve port disengaging closure
Close, air inlet is connected with gas outlet.Structure setting of the present invention is reasonable, can prevent in valve body that air pressure is excessive and cause rupture of diaphragm
The problem of caused pressure-reducing valve can not use.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the overall structure sectional view of the present invention.
Fig. 3 is the structural representation of inventive piston bar.
In figure:1st, air inlet；2nd, gas outlet；3rd, the first valve body；4th, valve port；5th, valve rod；6th, piston；7th, spring base；8th,
One spring；9th, upper lid；11st, primary diaphragm；12nd, air admission hole；13rd, venthole；15th, the second valve body；16th, second spring；17th, valve
Core；18th, valve seat；19th, air outlet valve；20th, guidance set；21st, the 3rd spring；22nd, piston rod；25th, the 4th spring；26th, spring housing；
27th, adjusting rod；28th, end cap；29th, adjustment cap；30th, upper chamber；31st, lower chambers；32nd, diaphragm seat；33rd, guide groove；34th, first is logical
Hole；35th, the second through hole；36th, third through-hole；37th, first chamber；38th, second chamber；39th, the 3rd chamber；40th, the 4th chamber；
41st, steam vent；42nd, second channel；43rd, third channel；44th, guide pipe；45th, secondary diaphragm；46th, tabletting；47th, clasp；48th, it is solid
Determine part；49th, outlet passageway；50th, inlet channel；51st, inclined hole；52nd, airway tube.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1 to Figure 3, a kind of pressure-reducing valve of the present invention, including the first valve body 3, form in the first valve body 3
Air inlet 1, gas outlet 2 and connection air inlet 1 and the valve port 4 of gas outlet 2, the upper end of upper lid 9 is connected with pressure regulator valve, pressure regulator valve
It is fixedly connected with upper lid 9 by pin.
Valve rod 5 is equiped with first valve body 3, the upper end of valve rod 5 is stretched at outside the first valve body 3, and the lower end of valve rod 5 is fixedly connected
Having and open and close the piston 6 coordinated with valve port 4, the lower end of the first valve body 3 is connected with spring base 7, the first spring 8 is equiped with spring base 7,
First spring 8, which supports, to be located between piston 6 and spring base 7, and piston 6 can the upper and lower displacement in spring base 7；On first valve body 3
End is connected with lid 9, formed with membrane cavity between the upper valve body 3 of lid 9 and first, is equiped with membrane cavity membrane cavity being separated into upper chamber 30
With the primary diaphragm 11 of lower chambers 31 and the diaphragm seat 32 of fixed primary diaphragm 11, the middle part of primary diaphragm 11 is located in diaphragm
In seat 32, the periphery of primary diaphragm 11 is located between the valve body 3 of lid 9 and first, and the upper end upper lid 9 of insertion of diaphragm seat 32 is led
Into groove 33, the lower end of diaphragm seat 32 is flexibly connected with the upper end of valve rod 5, and lower chambers 31 turn on gas outlet 2；First spring 8
Piston 6 and valve rod 5 are jacked up upwards, piston 6 blocks valve port 4 so that valve port 4 is closed, while valve rod 5 is by
One diaphragm 11 jacks up upwards so that flexible primary diaphragm 11 is recessed upwards.
Pressure regulator valve includes the second valve body 15, second spring 16, valve element 17, valve seat 18, air outlet valve 19, guidance set 20, the
Three springs 21, piston rod 22, diaphragm unit, the 4th spring 25, spring housing 26, adjusting rod 27, end cap 28 and adjustment cap 29, second
Valve body 15 is provided with the air admission hole 12 connected with air inlet 1 and the venthole 13 connected with upper chamber 30, second spring 16, valve
Sequentially string is located at the second valve from right to left for core 17, valve seat 18, air outlet valve 19, guidance set 20, the 3rd spring 21 and diaphragm unit
In body 15, piston rod 22 sequentially passes through diaphragm unit, the 3rd spring 21, guidance set 20, air outlet valve 19 and valve seat from left to right
Offseted after 18 with valve element 17, end cap 28 is fixed on the left end of the second valve body 15 and fixed diaphragm unit, valve seat 18, guidance set
20 inwall with the second valve body 15 is fixed, and the part of adjusting rod 27 is inserted in end cap 28, and adjustment cap 29 is outer with adjusting rod 27
End is fixedly connected, and spring housing 26 is threadedly coupled with the inner end of adjusting rod 27, and spring housing 26 is along the lateral displacement of end cap 28, the 4th spring
25 support located between diaphragm unit and spring housing 26；When adjusting rod 27 rotates 26 can be covered along the side of adjusting rod 27 with driving spring
To, to left dislocation, now spring housing 26, which moves to right, compresses the 4th spring 25 so that the elastic masterpiece of the 4th spring 25 in end cap 28
With on diaphragm unit, piston rod 22 is driven to move right by diaphragm unit 23, the right-hand member of piston rod 22 offsets with valve element 17, needle
22 right-hand members are offseted with valve element 17, and piston rod 22 is moved right to the right to push up valve element 17 and opened, and is passed through between air admission hole 12 and venthole 13
Second through hole 35 at the middle part of valve seat 18.
Piston rod 22 is in hollow setting, and the wall of piston rod 22 is provided with the first through hole 34 connected with middle part, first through hole
34 coordinate with the closure of the middle part of air outlet valve 19, and the left end of piston rod 22 and the middle part of diaphragm unit grafting cooperation and diaphragm unit are provided with
The third through-hole 36 connected with the middle part of piston rod 22, the middle part of valve seat 18 are provided with the second through hole 35 passed through for piston rod 22, valve
Core 17 blocks under the resilient force of second spring 16 with the second through hole 35 of valve seat 18 to be coordinated so that the air admission hole of valve body 15
12 are in blocking state with venthole 13.
Formed with first chamber 37, diaphragm unit, the valve of guidance set 20 and second between end cap 28 and diaphragm unit formation
Formed with second chamber 38 between the inwall of body 15, formed with the 3rd between guidance set 20, the inwall of 18 and second valve body of valve seat 15
Chamber 39, formed with the 4th chamber 40 between the inwall of 18 and second valve body of valve seat 15, end cap 28 is provided with to be connected with first chamber 37
Logical steam vent 41, second chamber 38 are connected by second channel 42 with venthole 13, and the 3rd chamber 39 passes through third channel 43
Connected with venthole 13, the 4th chamber 40 connects with air admission hole 12, and the left end at the middle part of piston rod 22 passes through third channel 43 and the
One chamber 37 connects.
Upper lid 9 is communicated with the outlet passageway 49 by venthole 13 and upper chamber 30；First valve body 3 is provided with and air inlet 1
The inclined hole 51 of connection, upper lid 9 are communicated with the inlet channel 50 of inclined hole 51 and air admission hole 12；Is provided through on inlet channel 50
The airway tube 52 of one diaphragm 11.
Diaphragm unit includes guide pipe 44, secondary diaphragm 45, tabletting 46, clasp 47 and fixture 48, tabletting 46 and second
Diaphragm 45 is sheathed on guide pipe 44 successively from left to right, and the left end of tabletting 46 offsets with the 4th spring 25, secondary diaphragm 45
Inner circumferential is folded between tabletting 46 and the right-hand member of guide pipe 44, and the periphery of clasp 47 and the periphery of secondary diaphragm 45 are folded in end successively
Between the valve body 15 of lid 28 and second, the inner circumferential of clasp 47 and the spacing cooperation in periphery of tabletting 46, the left end of fixture 48, which is arranged in, leads
To the inner circumferential of pipe 44, the right-hand member of fixture 48 coordinates with the left end grafting of piston rod 22.
The present invention operation principle be operation adjustment cap 29, compression the 4th spring 25 make diaphragm unit drive piston rod 22 to
Move right, second spring 16 is compressed by valve element 17, and the through hole 35 of valve element 17 and second departs from closure and coordinated, the air inlet of air inlet 1, gas
Pass sequentially through inclined hole 51, airway tube 52, inlet channel 50, air admission hole 12, the 4th chamber 40, the second through hole 35, the 3rd chamber 39,
Third channel 43, venthole 13, outlet passageway 49 enter upper chamber 30, primary diaphragm 11 is moved down with ovable valve stem 5, and piston 6 is logical
Cross the first spring 8 and closure cooperation is departed from by compression and valve port 4, air inlet 1 is connected with gas outlet 2；When air pressure in upper chamber 30
During balance, the first through hole 34 on piston rod 22 coordinates with the closure of the middle part of air outlet valve 19, when air pressure is excessive in upper chamber 30, gas
Body promotes diaphragm unit to the left by second channel 42, and diaphragm unit drives piston rod 22 to move to left, first through hole 34 and air outlet valve
19 middle parts depart from closure and coordinated, and the gas in upper chamber 30 enters the 3rd chamber 39 from third channel 43, then from first through hole 34,
The hollow part of third through-hole 43 and piston rod 22 enters first chamber 37, is finally discharged from first chamber 37 to steam vent 41；
When air-flow is concentrated through venthole 13 into upper chamber 30, air pressure driving primary diaphragm 11 moves down in upper chamber 30, if upper chamber
Air pressure is excessive in 30, and air-flow can discharge from first through hole 34, third through-hole 43 and steam vent 41, the continuous deflation of first through hole 34
It can ensure that the air pressure in upper chamber 30 is normal, prevent the rupture of primary diaphragm 11 from causing pressure-reducing valve not use.
Described above is only the better embodiment of the present invention, therefore all constructions according to described in present patent application scope,
The equivalent change or modification that feature and principle are done, is included in the range of present patent application.
Claims (6)
- A kind of 1. pressure-reducing valve, it is characterised in that：Including the first valve body（3）, the first valve body（3）Inside form air inlet（1）, outlet Mouthful（2）And connection air inlet（1）With gas outlet（2）Valve port（4）, the first valve body（3）Inside it is equiped with valve rod（5）, valve rod（5） Upper end is stretched at the first valve body（3）Outside, valve rod（5）Lower end is fixedly connected with and valve port（4）Open and close the piston coordinated（6）, the One valve body（3）Lower end is connected with spring base（7）, spring base（7）Inside it is equiped with the first spring（8）, the first spring（8）To located at work Plug（6）With spring base（7）Between, the first valve body（3）Upper end is connected with lid（9）, upper lid（9）With the first valve body（3）Between shape Into there is membrane cavity, it is equiped with membrane cavity and membrane cavity is separated into upper chamber（30）And lower chambers（31）Primary diaphragm（11）It is and fixed Primary diaphragm（11）Diaphragm seat（32）, primary diaphragm（11）Middle part be located in diaphragm seat（32）It is interior, primary diaphragm（11）'s Periphery is located in lid（9）With the first valve body（3）Between, diaphragm seat（32）Upper end insertion on cover（9）Guide groove（33）It is interior, Diaphragm seat（32）Lower end and valve rod（5）Upper end be flexibly connected, lower chambers（31）With gas outlet（2）Conducting, upper lid（9）It is upper End is connected with pressure regulator valve；Pressure regulator valve includes the second valve body（15）, second spring（16）, valve element（17）, valve seat（18）, air outlet valve（19）, guidance set （20）, the 3rd spring（21）, piston rod（22）, diaphragm unit, the 4th spring（25）, spring housing（26）, adjusting rod（27）, end cap （28）And adjustment cap（29）, the second valve body（15）It is provided with and air inlet（1）The air admission hole of connection（12）And and upper chamber （30）The venthole of connection（13）, second spring（16）, valve element（17）, valve seat（18）, air outlet valve（19）, guidance set（20）、 3rd spring（21）And sequentially string is located at the second valve body to diaphragm unit from right to left（15）It is interior, piston rod（22）Sequentially from left to right Through diaphragm unit, the 3rd spring（21）, guidance set（20）, air outlet valve（19）And valve seat（18）Afterwards with valve element（17）Offset, End cap（28）It is fixed on the second valve body（15）Left end and diaphragm unit is fixed, valve seat（18）, guidance set（20）With Two valve bodies（15）Inwall fix, adjusting rod（27）Part is inserted in end cap（28）It is interior, adjustment cap（29）With adjusting rod（27）'s Outer end is fixedly connected, spring housing（26）With adjusting rod（27）Inner end threaded connection, spring housing（26）Along end cap（28）Horizontal position Move, the 4th spring（25）To located at diaphragm unit and spring housing（26）Between；Piston rod（22）In hollow setting, piston rod（22） Wall be provided with the first through hole that is connected with middle part（34）, first through hole（34）With air outlet valve（19）Middle part closure coordinates, piston Bar（22）Left end and diaphragm unit grafting cooperation and the middle part of diaphragm unit be provided with and piston rod（22）The 3rd of middle part connection Through hole（36）, valve seat（18）Middle part be provided with supply piston rod（22）The second through hole passed through（35）, valve seat（18）The second through hole （35）With valve element（17）Closure coordinates, end cap（28）Formed with first chamber between being formed with diaphragm unit（37）, diaphragm unit, Guidance set（20）With the second valve body（15）Formed with second chamber between inwall（38）, guidance set（20）, valve seat（18）With Second valve body（15）Formed with the 3rd chamber between inwall（39）, valve seat（18）With the second valve body（15）Formed between inwall Four chambers（40）, end cap（28）It is provided with and first chamber（37）The steam vent of connection（41）, second chamber（38）Pass through second Passage（42）With venthole（13）Connection, the 3rd chamber（39）Pass through third channel（43）With venthole（13）Connection, the 4th chamber Room（40）With air admission hole（12）Connection, piston rod（22）The left end at middle part passes through third channel（43）With first chamber（37）Even It is logical；By operating adjustment cap（29）, compress the 4th spring（25）Diaphragm unit is set to drive piston rod（22）Move right, second Spring（16）By valve element（17）Compression, valve element（17）With the second through hole（35）Depart from closure to coordinate, air inlet（1）Air inlet, gas Pass sequentially through air admission hole（12）, the 4th chamber（40）, the second through hole（35）, the 3rd chamber（39）, third channel（43）, venthole （13）Into upper chamber（30）, make primary diaphragm（11）Band ovable valve stem（5）Move down, piston（6）Pass through the first spring（8）Compressed With valve port（4）Depart from closure to coordinate, make air inlet（1）With gas outlet（2）Connection；Work as upper chamber（30）It is living during interior air pressure balance Stopper rod（22）On first through hole（34）With air outlet valve（19）Middle part closure coordinates, and works as upper chamber（30）When interior air pressure is excessive, gas Body passes through second channel（42）Diaphragm unit is promoted to the left, and diaphragm unit drives piston rod（22）Move to left, first through hole（34）With Air outlet valve（19）Middle part departs from closure and coordinated, upper chamber（30）Interior gas is from third channel（43）Into the 3rd chamber（39）, Again from first through hole（34）, third through-hole（43）And piston rod（22）Hollow part enter first chamber（37）, finally from One chamber（37）To steam vent（41）Discharge.
- A kind of 2. pressure-reducing valve according to claim 1, it is characterised in that：Diaphragm unit includes guide pipe（44）, the second film Piece（45）, tabletting（46）, clasp（47）And fixture（48）, tabletting（46）And secondary diaphragm（45）It is sheathed on successively from left to right Guide pipe（44）On, tabletting（46）Left end and the 4th spring（25）Offset, secondary diaphragm（45）Inner circumferential be folded in tabletting （46）And guide pipe（44）Between right-hand member, clasp（47）Periphery and secondary diaphragm（45）Periphery be folded in end cap successively（28） With the second valve body（15）Between, clasp（47）Inner circumferential and tabletting（46）The spacing cooperation in periphery, fixture（48）Left end card is set In guide pipe（44）Inner circumferential, fixture（48）Right-hand member and piston rod（22）Left end grafting coordinate.
- A kind of 3. pressure-reducing valve according to claim 1, it is characterised in that：Upper lid（9）It is communicated with venthole（13）With Upper chamber（30）Outlet passageway（49）.
- A kind of 4. pressure-reducing valve according to claim 1, it is characterised in that：First valve body（3）It is provided with and air inlet（1）Connection Inclined hole（51）, upper lid（9）It is communicated with inclined hole（51）With air admission hole（12）Inlet channel（50）.
- A kind of 5. pressure-reducing valve according to claim 1, it is characterised in that：Inlet channel（50）On be provided through primary diaphragm （11）Airway tube（52）.
- A kind of 6. pressure-reducing valve according to claim 1, it is characterised in that：Pressure regulator valve and upper lid（9）Fixed and connected by pin Connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106188.8A CN107816568A (en) | 2017-11-10 | 2017-11-10 | A kind of pressure-reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711106188.8A CN107816568A (en) | 2017-11-10 | 2017-11-10 | A kind of pressure-reducing valve |
Publications (1)
| Publication Number | Publication Date |
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| CN107816568A true CN107816568A (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711106188.8A Pending CN107816568A (en) | 2017-11-10 | 2017-11-10 | A kind of pressure-reducing valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561591A (en) * | 2020-03-31 | 2020-08-21 | 浙江杭惠阀门有限公司 | Combined safety valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB540026A (en) * | 1940-04-22 | 1941-10-02 | John Graham | Improvements in and relating to reducing valves |
| GB964190A (en) * | 1962-08-17 | 1964-07-15 | Benbow Mfg Corp | A pressure regulator |
| US20080047618A1 (en) * | 2004-02-10 | 2008-02-28 | Keihin Corporation | Pressure Reducing Valve And Regulator For Gas |
| CN103697207A (en) * | 2013-12-27 | 2014-04-02 | 李潘宝 | Pilot-operated pressure regulating valve |
| CN203963058U (en) * | 2014-07-24 | 2014-11-26 | 奉化市全盛自动化工程有限公司 | A kind of large flux control valve |
-
2017
- 2017-11-10 CN CN201711106188.8A patent/CN107816568A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB540026A (en) * | 1940-04-22 | 1941-10-02 | John Graham | Improvements in and relating to reducing valves |
| GB964190A (en) * | 1962-08-17 | 1964-07-15 | Benbow Mfg Corp | A pressure regulator |
| US20080047618A1 (en) * | 2004-02-10 | 2008-02-28 | Keihin Corporation | Pressure Reducing Valve And Regulator For Gas |
| CN103697207A (en) * | 2013-12-27 | 2014-04-02 | 李潘宝 | Pilot-operated pressure regulating valve |
| CN104048085A (en) * | 2013-12-27 | 2014-09-17 | 李潘宝 | Pilot-operated type pressure regulation valve |
| CN203963058U (en) * | 2014-07-24 | 2014-11-26 | 奉化市全盛自动化工程有限公司 | A kind of large flux control valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111561591A (en) * | 2020-03-31 | 2020-08-21 | 浙江杭惠阀门有限公司 | Combined safety valve |
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