CN108397570A - Piston type pneumatic control valve - Google Patents
Piston type pneumatic control valve Download PDFInfo
- Publication number
- CN108397570A CN108397570A CN201810182973.XA CN201810182973A CN108397570A CN 108397570 A CN108397570 A CN 108397570A CN 201810182973 A CN201810182973 A CN 201810182973A CN 108397570 A CN108397570 A CN 108397570A
- Authority
- CN
- China
- Prior art keywords
- valve
- blind hole
- ladder
- valve port
- pneumatic control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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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
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
Abstract
A kind of piston type pneumatic control valve,Piston type pneumatic control valve includes valve body,Valve deck,Valve rod,Guided seat,Spring,Lower valve port,Upper valve port,And sealing ring type spool,Valve body upper end offers ladder blind hole,Valve body side offers the air inlet being connected to ladder blind hole successively from top to bottom,Gas outlet,Exhaust outlet,And control mouth,Stem lower portion is inserted in ladder blind hole lower part and can be moved axially along ladder blind hole,Valve rod lower end is higher than control mouth,Valve rod top is inserted in the axially extending bore of guided seat and can be moved axially along through-hole,Guided seat plugs and is sticked in the top of ladder blind hole,Upper valve port is set to guided seat lower end,Lower valve port is set in the ladder blind hole below valve port,Sealing ring type valve core housing is set in the middle part of valve rod and between lower valve port and upper valve port,Valve deck is detachably buckled in ladder blind hole,Spring clip is set between valve deck and valve rod.
Description
Technical field
The present invention relates to a kind of valve body technical field, more particularly to a kind of piston type pneumatic control valve.
Background technology
Rail vehicle is during utilization it is possible that the case where not alleviating is braked and (also known as brake), in order to ensure
When braking is not alleviated, vehicle is movable to rolling stock section, generally in brake control and can park control module equipped at outlet port and sets
Piston type pneumatic control valve is set, by the gas path on-off of solenoid valve control piston type pneumatic control valve, realizes remote auto braking isolation, this valve
Setting also provide basis for automatic Pilot.
Shown in Figure 1, existing piston type pneumatic control valve 200 is generally sealed using vulcanized rubber component, and movement is single
Meta structure is complicated, and assembly is cumbersome.Vulcanization spool 202 is set on valve rod 201 in the form of piston, is fixed by shaft block ring 204, living
Stick harness 201 is oriented to by guided seat 203, and guided seat 203 is pressed by end cap 205 in piston type pneumatic control valve 200, the work
Plug Pneumatic valve 200 is single guide valve (i.e. upper end is oriented to), and valve rod 201 is easy to generate deflection, which easily produces
Raw cumulative errors, and then transmission efficiency is influenced, and it requires height, disadvantages mentioned above to lead to valve itself machining accuracy and assembly precision
Production cost it is higher, and when internal part relative motion easily occur clamping stagnation and generate abrasion, and then increase unit failure it is general
Rate causes being significantly increased for working service cost.
Invention content
In view of above-mentioned condition, it is necessary to a kind of piston type pneumatic control valve that novel structure is simple be provided, disclosure satisfy that rail
Road motor vehicle braking system requirement, and failure rate is low, production cost is low, the shortcomings that overcome existing piston type pneumatic control valve.
The present invention provides a kind of piston type pneumatic control valve, and the piston type pneumatic control valve includes valve body, valve deck, valve rod, guide valve
Seat, spring, lower valve port, upper valve port and sealing ring type spool, the valve body upper end offer ladder blind hole, the valve body-side
Face offers air inlet, gas outlet, exhaust outlet and the control mouth being connected to the ladder blind hole successively from top to bottom, described
Stem lower portion is inserted in ladder blind hole lower part and can be moved axially along the ladder blind hole, and the valve rod lower end is higher than institute
Control mouth is stated, the valve rod top is inserted in the axially extending bore of the guided seat and can be moved axially along the through-hole, institute
The top that guided seat plugs and is sticked in the ladder blind hole is stated, the upper valve port is set to the guided seat lower end, institute
It states in the ladder blind hole that lower valve port is set to below the upper valve port, the sealing ring type valve core housing is set in the valve rod
Portion and between the lower valve port and the upper valve port, the valve deck is detachably buckled in the ladder blind hole, the bullet
Spring is located between the valve deck and the valve rod；By the control mouth break-make compressed air, the stem lower portion is in described
The valve rod top moves axially in the through-hole and drives the sealing ring type valve while axial movement in ladder blind hole
Core moved between the lower valve port and the upper valve port and realize the gas outlet be connected to the air inlet or with the row
The transformation of gas port connection.
Further, the ladder blind hole include the first ladder, the second ladder, first segment blind hole, second segment blind hole and
Third section blind hole, first ladder is less than the valve body upper end and is higher than second ladder, first ladder and described
It is blind that the ladder blind hole is divided into the coaxial first segment blind hole that three sections of diameters successively decrease successively, the second segment by the second ladder
Hole and the third section blind hole.
Further, the upper end periphery of the guided seat is convexly equipped with limiting section, and the limiting section is arranged in described first
Section blind hole in and engaging be limited on first ladder, the guided seat is arranged in the second segment blind hole, it is described on
Valve port between the air inlet and the gas outlet, the guided seat lower side offer be connected to the through-hole it is logical
Stomata, the air inlet are connected to the venthole.
Further, second ladder is provided with the lower valve protruding upward close to the position of the third section blind hole
Mouthful.
Further, the valve rod from top to bottom offers first annular groove and second annular groove successively, and described
Protrusion is formed between one annular groove and the second annular groove, is provided on the protrusion and is protruded from the protrusion
The sealing ring type spool, the sealing ring type spool between the lower valve port and the upper valve port, it is described second annular
The valve rod height of groove lower part is between exhaust outlet and control mouth.
Further, first annular caulking groove is offered on the protrusion, and protrusion is embedded in the first annular caulking groove
In the sealing ring type spool of the first annular caulking groove.
Further, the air inlet and the gas outlet are connected to the second segment blind hole respectively, the gas outlet
Bottom end and second ladder are contour, and the exhaust outlet and the control mouth are connected to the third section blind hole respectively, the control
The lower end of donsole and the bottom hole of the ladder blind hole are contour, and the upper end of the control mouth is higher than the bottom hole of the ladder blind hole.
Further, the upper end center of the valve rod offers blind hole, and the spring is contained in the blind hole and sandwiched
Between the hole bottom and the valve deck.
Further, the guided seat and valve deck can be integral type.
Further, the periphery of the upper valve port offers the 5th annular caulking groove, is embedded in the described 5th annular caulking groove
Slightly protrude from the 5th sealing ring of the described 5th annular caulking groove.
The advantageous effect that the technical solution of the embodiment of the present invention is brought is：Above-mentioned piston type pneumatic control valve has double guiding
Valve rod, valve rod are not easy to generate deflection when moving, and assembling deviation is small, and sealing ring type spool is inclined when engaging with lower valve port or upper valve port
Poor smaller, sealing effect are good, product more durable.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing piston type pneumatic control valve.
Fig. 2 is the structural schematic diagram that the piston type pneumatic control valve of the present invention is in normal ventilation position.
Fig. 3 is that the piston type pneumatic control valve of the present invention is in the structural schematic diagram for forcing alleviating position.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to the embodiment of the present invention
It is described in further detail.
Fig. 2 is the structural schematic diagram that the piston type pneumatic control valve of the present invention is in normal ventilation position, and Fig. 3 is the piston of the present invention
Formula Pneumatic valve is in the structural schematic diagram for forcing alleviating position.Specifically, Fig. 2 to Fig. 3 is referred to, piston type pneumatic control valve of the invention
100 include valve body 11, valve deck 12, valve rod 13, guided seat 14, spring 15, lower valve port 16, upper valve port 17 and sealing ring type
Spool 18.Piston type pneumatic control valve 100 changes the pressure change of 13 lower end of valve rod come real by 117 break-make compressed air of control mouth
The now opening and closing switching of upper valve port 17 and lower valve port 16, to change the break-make of gas circuit.
Valve body 11 is cylindrical shape or rectangular-shape structure, and in the present embodiment, valve body 11 is in a rectangular parallelepiped shape.On valve body 11
End offers ladder blind hole 112, ladder blind hole 112 include the first ladder 1121, the second ladder 1122, first segment blind hole 1123,
Second segment blind hole 1124 and third section blind hole 1125, the first ladder 1121 is less than 11 upper surface of valve body and is higher than the second ladder
1122, ladder blind hole 112 is divided coaxial first to successively decrease successively for three sections of diameters by the first ladder 1121 and the second ladder 1122
Section blind hole 1123, second segment blind hole 1124 and third section blind hole 1125.Ladder blind hole 112 is the ladder by being machined into
Blind hole 112 forms one cavity in valve body 11.Second ladder 1122 close to the position of third section blind hole 1125 be provided with to
The lower valve port 16 protruded above.
The one side (right side in such as Fig. 2 and Fig. 3) of valve body 11 offers air inlet 114, gas outlet successively from top to bottom
115, exhaust outlet 116 and control mouth 117, air inlet 114, gas outlet 115 from second segment blind hole 1124 with ladder blind hole
112 connections, the bottom end of gas outlet 115 and the second ladder 1122 are contour, and exhaust outlet 116, control mouth 117 are from third section blind hole 1125
Place is connected to ladder blind hole 112, and the lower end of control mouth 117 and the bottom hole of ladder blind hole 112 are contour, and the upper end of control mouth 117 is high
In the bottom hole of ladder blind hole 112.
The structure of valve deck 12 is corresponding with the structure of valve body 11, is relatively thin cylindric or rectangular-shape, in the present embodiment
In, valve body 11 is rectangular-shape.Valve deck 12 is buckled in ladder blind hole 112,11 upper surface of valve body of 112 periphery of ladder blind hole with
12 face of valve deck contacts, and valve deck 12 is detachably fixed with valve body 11 and is connected in one, and it can be that screw thread connects that this, which is detachably fixed connection,
Connect, be pressed be fixedly connected or circlip for hole insertion be fixedly connected.
Valve rod 13 is cylindrical shape bar structure, and valve rod 13 from top to bottom offers first annular groove 131 and the successively
Opening up for second ring groove 132, first annular groove 131 and second annular groove 132 is in order to which valve rod 13 is installed on valve body 11
The connection between connection, gas outlet 115 and exhaust outlet 116 after interior between air inlet 114 and gas outlet 115.It is first annular recessed
Protrusion 133 is formed between slot 131 and second annular groove 132, offers first annular caulking groove 134 on protrusion 133, first
The sealing ring type spool 18 for protruding from first annular caulking groove 134 is embedded in annular caulking groove 134.132 lower part of second annular groove
Valve rod 13 on offer the second annular caulking groove 136, be embedded in the second annular caulking groove 136 and slightly protrude from the second annular caulking groove
136 the second sealing ring 137.Third annular caulking groove 138, third ring are offered on the valve rod 13 on 131 top of first annular groove
The third sealing ring 139 for slightly protruding from third annular caulking groove 138 is embedded in shape caulking groove 138, the upper end center of valve rod 13 opens up
There is blind hole 130.The diameter of valve rod 13 is equal to the diameter of third section blind hole 1125.
Guided seat 14 is cylindrical shape structure, and the diameter of guided seat 14 is equal to the diameter of second segment blind hole 1124.It leads
It is convexly equipped with limiting section 141 to the upper end periphery of valve seat 14, limiting section 141 is annular and, limit coaxially connected with guided seat 14
The outer diameter in portion 141 is equal to the diameter of first segment blind hole 1123, and the height of limiting section 141 is equal to the length of first segment blind hole 1123,
Guided seat 14 is arranged in second segment blind hole 1124, and limiting section 141 is arranged in first segment blind hole 1123 and engages limit
In on the first ladder 1121.The center of guided seat 14 offers axial through-hole 142, and the diameter of through-hole 142 is equal to valve rod 13
Diameter.The lower side of guided seat 14 offers the venthole 143 being connected to through-hole 142, and venthole 143 is used for and air inlet
Mouth 114 is connected to first annular groove 131.14 side of guided seat offers fourth annular caulking groove 144, fourth annular caulking groove
The 4th sealing ring 145 for slightly protruding from fourth annular caulking groove 144 is embedded in 144.The height of guided seat 14 is less than valve rod 13
Height.Guided seat 14 is used to coordinate with valve rod 13 guiding for realizing 13 upper end of valve rod, and for installing valve port 17.It is oriented to
14 lower end of valve seat is provided with valve port 17, and the periphery of upper valve port 17 offers the 5th annular caulking groove 172, the 5th annular caulking groove 172
In be embedded with the 5th sealing ring 174 for slightly protruding from the 5th annular caulking groove 172.17 outer diameter of upper valve port is equal to second segment blind hole 1124
Diameter.
Spring 15 is contained in blind hole 130, and spring 15 is located between 130 bottom hole of blind hole and valve deck 12, and spring 15 can edge
13 axial stretching of valve rod.
Above-mentioned sealing ring type spool 18, the second sealing ring 137, third sealing ring 139, the 4th sealing ring 145 and the 5th
Sealing ring 174 can be O-ring, K shapes circle, star circle or heart-shaped circle.Third sealing ring 139 is compressed for separating in air inlet 114
Air and ambient atmosphere start sealing function；4th sealing ring 145 is big for separating compressed air and the external world in air inlet 114
Gas plays static seal；5th sealing ring 174 is used to separate the access of air inlet 114 and gas outlet 115, plays static seal；
Second sealing ring 137 is used to separate the access of control mouth 117 and exhaust outlet 116, starts sealing function.
Lower valve port 16, upper valve port 17,18 fit structure of sealing ring type spool is simple, seal form is simple and reliable and stable,
Save manufacturing cost and maintenance cost.Sealing ring type spool 18 is two way seal spool, and sealing ring type spool 18 can engage respectively
Lower valve port 16 or upper valve port 17 and realize normal ventilation position and force the transformation of alleviating position.Lower valve port 16 or upper valve port 17 are by close
The two way seal of seal formula spool 18 can replace traditional vulcanized rubber component, and flexible deformation and sealing effect are more preferable, and right
Assembly precision requires to reduce, it is ensured that properties of product reduce failure rate.
It should be noted that guided seat 14 and valve deck 12 can be integral type, guided seat 14 is inserted into ladder blind hole 112
In realize that valve deck 12 is connected together (be pressed be fixedly connected) with valve body 11, and then simplify piston type pneumatic control valve 100, can save
The 4th sealing ring 145 is removed, simpler, assembly precision higher is assembled.
The installation method of piston type pneumatic control valve 100 is as follows：The valve rod 13 of first annular groove 131 and upper part, which is arranged in, leads
Into the through-hole 142 of valve seat 14, protrusion 133 and sealing ring type spool 18 are limited in the lower section of valve port 17, the valve rod on top
13 can axially move in through-hole 142, and third sealing ring 139 is located between the valve rod 13 on top and through-hole 142 and plays
Sealing function；Assembled valve rod 13 and guided seat 14 are inserted into the ladder blind hole 112 of valve body 11, the valve rod 13 of lower part is inserted
Enter in third section blind hole 1125, the valve rod 13 of lower part can axially move in third section blind hole 1125, guided seat 14 and under
Valve port 16 is inserted into second segment blind hole 1124, and the 5th sealing ring 174 is located between lower valve port 16 and second segment blind hole 1124, together
When the 4th sealing ring 145 be located between guided seat 14 and second segment blind hole 1124, protrusion 133 and sealing ring type spool 18
It is limited between valve port 17 and lower valve port 16 and sealing ring type spool 18 can move between upper valve port 17 and lower valve port, limit
Portion 141 is inserted into first segment blind hole 1123 and engaging is limited on the first ladder 1121, air inlet 114, venthole 143 and
Ladder blind hole 112 is connected to, and exhaust outlet 116 is connected to second annular groove 132, then spring 15 is set in blind hole 130, by valve
Lid 12 is buckled in ladder blind hole 112 and is detachably fixed valve deck 12 with valve body 11 and is connected in one, and spring 15 is located in blind
And it can be axially retractable between 130 bottom hole of hole and valve deck 12.
The operation principle of piston type pneumatic control valve 100 is as follows：
Piston type pneumatic control valve 100 is in normal ventilation position (i.e. original state), 117 obstructed compressed air of control mouth, valve rod
13 move down in the case where the spring of spring 15 replys force effect, and valve rod 13 drives sealing ring type spool 18 to move down, until
Sealing ring type spool 18 is sticked in lower valve port 16, at this time air inlet 114 be connected with gas outlet 115 (i.e. air inlet 114, ventilation
Hole 143, first annular groove 131 and gas outlet 115 are connected), gas outlet 115 is blocked with exhaust outlet 116, in air inlet 114
Compressed air act on 18 surface of sealing ring type spool simultaneously and form lower pressure, further ensure that gas outlet 115 and exhaust outlet
Air-tightness between 116.
Piston type pneumatic control valve 100, which is in, forces alleviating position (i.e. action state), control mouth 117 to be passed through compressed air, compresses
Air push valve rod 13 overcomes the spring restoring force of spring 15 to move up, and valve rod 13 drives the sealing ring on protrusion 133
Formula spool 18 moves up, until sealing ring type spool 18 is sticked in valve port 17, air inlet 114 is cut with gas outlet 115 at this time
Disconnected, gas outlet 115 is connected with exhaust outlet 116, and the compressed air at gas outlet 115, to air, is realized by 116 row of exhaust outlet
Force mitigation capability.
The valve rod 13 on top can axially move in through-hole 142, while the valve rod 13 of lower part is in third section blind hole 1125
In can axially move, double guiding at valve rod 13 both ends are realized in the cooperation of the two.Double guiding of valve rod 13 so that valve rod 13 moves
When be not easy to generate deflection, effectively reduce assembling deviation, be further ensured that sealing ring type spool 18 and lower valve port 16 or upper valve port
The reliability of 17 sealings.Since sealing ring type spool 18 is set on the middle part (protrusion 133) of valve rod 13, sealing ring type spool
18 and lower valve port 16 or upper valve port 17 deviation smaller when engaging.The valve rod 13 on top is oriented to cooperation, it is ensured that sealing ring type spool 18
Sealing effect when engaging with upper valve port 17；The valve rod 13 of lower part is oriented to cooperation, it is ensured that sealing ring type spool 18 and lower valve port 16
Sealing effect when engaging.
The advantageous effect that the technical solution of the embodiment of the present invention is brought is：Above-mentioned piston type pneumatic control valve 100 has double be oriented to
Valve rod 13, valve rod 13 is not easy to generate deflection when moving, and assembling deviation is small, sealing ring type spool 18 and lower valve port 16 or upper valve
Deviation smaller, sealing effect are good when mouth 17 engages, product more durable.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as be without departing from technical solution of the present invention content, it is right according to the technical essence of the invention
Any simple modification, equivalent change and modification made by above example, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of piston type pneumatic control valve (100), it is characterised in that：The piston type pneumatic control valve (100) includes valve body (11), valve deck
(12), valve rod (13), guided seat (14), spring (15), lower valve port (16), upper valve port (17) and sealing ring type spool
(18), valve body (11) upper end offers ladder blind hole (112), valve body (11) side offer successively from top to bottom with
Air inlet (114), gas outlet (115), exhaust outlet (116) and the control mouth (117) that the ladder blind hole (112) is connected to, institute
Valve rod (13) lower part is stated to be inserted in ladder blind hole (112) lower part and can move axially along the ladder blind hole (112), institute
It states valve rod (13) lower end and is higher than the control mouth (117), valve rod (13) top is inserted in the axis of the guided seat (14)
It can move axially into through-hole (142) and along the through-hole (142), the guided seat (14) plugs and is sticked in the ladder
The top of blind hole (112), the upper valve port (17) are set to the guided seat (14) lower end, and the lower valve port (16) is set to
In the ladder blind hole (112) below the upper valve port (17), the sealing ring type spool (18) is sheathed on the valve rod
(13) in the middle part of and between the lower valve port (16) and the upper valve port (17), the valve deck (12) is detachably buckled in described
In ladder blind hole (112), the spring (15) is located between the valve deck (12) and the valve rod (13)；Pass through the control
Mouth (117) break-make compressed air, valve rod (13) lower part valve while axial movement in the ladder blind hole (112)
Bar (13) top moves axially in the through-hole (142) and drives the sealing ring type spool (18) in the lower valve port (16)
Moved between the upper valve port (17) and realize the gas outlet (115) be connected to the air inlet (114) or with the row
The transformation of gas port (116) connection.
2. piston type pneumatic control valve (100) as described in claim 1, it is characterised in that：The ladder blind hole (112) includes first
Ladder (1121), the second ladder (1122), first segment blind hole (1123), second segment blind hole (1124) and third section blind hole
(1125), first ladder (1121) less than the valve body (11) upper end and is higher than second ladder (1122), and described the
One ladder (1121) and second ladder (1122) by the ladder blind hole (112) be divided into three sections of diameters successively decrease successively it is coaxial
The first segment blind hole (1123), the second segment blind hole (1124) and the third section blind hole (1125).
3. piston type pneumatic control valve (100) as claimed in claim 2, it is characterised in that：Outside the upper end of the guided seat (14)
It is convexly equipped with limiting section (141) week, the limiting section (141), which is arranged in the first segment blind hole (1123) and engages, is limited in institute
It states on the first ladder (1121), the guided seat (14) is arranged in the second segment blind hole (1124), the upper valve port
(17) between the air inlet (114) and the gas outlet (115), guided seat (14) lower side offers and institute
The venthole (143) of through-hole (142) connection is stated, the air inlet (114) is connected to the venthole (143).
4. piston type pneumatic control valve (100) as claimed in claim 3, it is characterised in that：Second ladder (1122) is close to institute
The position for stating third section blind hole (1125) is provided with the lower valve port (16) protruding upward.
5. piston type pneumatic control valve (100) as described in claim 3 or 4, it is characterised in that：The valve rod (13) from top to bottom according to
It is secondary to offer first annular groove (131) and second annular groove (132), the first annular groove (131) and described second
Protrusion (133) is formed between annular groove (132), is provided on the protrusion (133) and is protruded from the protrusion (133)
The sealing ring type spool (18), the sealing ring type spool (18) in the lower valve port (16) and the upper valve port (17) it
Between, the valve rod (13) of second annular groove (132) lower part highly between exhaust outlet (116) and control mouth (117) it
Between.
6. piston type pneumatic control valve (100) as claimed in claim 5, it is characterised in that：Is offered on the protrusion (133)
One annular caulking groove (134) is embedded with the institute for protruding from the first annular caulking groove (134) in the first annular caulking groove (134)
State sealing ring type spool (18).
7. piston type pneumatic control valve (100) as claimed in claim 2, it is characterised in that：The air inlet (114) and the outlet
Mouth (115) is connected to the second segment blind hole (1124) respectively, bottom end and second ladder of the gas outlet (115)
(1122) contour, the exhaust outlet (116) and the control mouth (117) are connected to the third section blind hole (1125) respectively, institute
Lower end and the bottom hole of the ladder blind hole (112) for stating control mouth (117) are contour, and the upper end of the control mouth (117) is higher than institute
State the bottom hole of ladder blind hole (112).
8. piston type pneumatic control valve (100) as described in claim 1, it is characterised in that：The upper end center of the valve rod (13) is opened
Equipped with blind hole (130), the spring (15) is contained in the blind hole (130) and is located in the blind hole (130) bottom hole and institute
It states between valve deck (12).
9. piston type pneumatic control valve (100) as described in claim 1, it is characterised in that：The guided seat (14) and valve deck
(12) it can be integral type.
10. piston type pneumatic control valve (100) as claimed in claim 2, it is characterised in that：The periphery of the upper valve port (17) opens up
There is the 5th annular caulking groove (172), is embedded in the described 5th annular caulking groove (172) and slightly protrudes from the described 5th annular caulking groove
(172) the 5th sealing ring (174).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182973.XA CN108397570A (en) | 2018-03-06 | 2018-03-06 | Piston type pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810182973.XA CN108397570A (en) | 2018-03-06 | 2018-03-06 | Piston type pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108397570A true CN108397570A (en) | 2018-08-14 |
Family
ID=63091933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810182973.XA Pending CN108397570A (en) | 2018-03-06 | 2018-03-06 | Piston type pneumatic control valve |
Country Status (1)
| Country | Link |
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| CN (1) | CN108397570A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043688A (en) * | 2019-04-29 | 2019-07-23 | 江苏沙洲阀门有限公司 | A kind of high-pressure pneumatic reversing solenoid valve |
| CN110878847A (en) * | 2019-12-13 | 2020-03-13 | 瑞立集团瑞安汽车零部件有限公司 | Low output device is got to fluid valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110043688A (en) * | 2019-04-29 | 2019-07-23 | 江苏沙洲阀门有限公司 | A kind of high-pressure pneumatic reversing solenoid valve |
| CN110878847A (en) * | 2019-12-13 | 2020-03-13 | 瑞立集团瑞安汽车零部件有限公司 | Low output device is got to fluid valve |
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Application publication date: 20180814 |