CN109854754A - A kind of guide type valve - Google Patents
A kind of guide type valve Download PDFInfo
- Publication number
- CN109854754A CN109854754A CN201910064580.3A CN201910064580A CN109854754A CN 109854754 A CN109854754 A CN 109854754A CN 201910064580 A CN201910064580 A CN 201910064580A CN 109854754 A CN109854754 A CN 109854754A
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- guide
- cylinder
- piston rod
- piston
- flap
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Abstract
The present invention provides a kind of guide type valve, mouth, sealing mechanism and piston rod are connect including cylinder, piston, valve body, main valve clack, guide's flap, double flange connectors, manipulation gas, double flange connector sides connect the cylinder, the other side of double flange connectors connects the valve body, be slidably connected the piston in the cylinder, described piston one end connects the piston rod, the piston rod extends to the intracorporal one end of the valve through double flange connectors and guide's flap is arranged, and the main valve clack has been slidably socketed outside guide's flap.Sealing mechanism of the sealing by replacing double flange connectors in double flange connectors setting sealing mechanisms realizations, damage between cylinder described in guide type valve provided by the invention and the piston rod and between the valve body and the piston rod.
Description
Technical field
The present invention relates to the valve field in universal machine product, specifically a kind of pilot-operated type pneumatic stopping valve.
Background technique
Shut-off valve refers to that the valve that flap is moved along valve seat axis, flap mainly play cutting action in pipeline.It is pneumatic to cut
Only cylinder is arranged in valve body one end of valve, and piston is arranged in the cylinder, and piston rod is arranged in described piston one end, and the piston rod passes through
It wears the cylinder and valve body extends in the valve body, flap is arranged in the end of the piston rod, controls institute by the cylinder
The mobile liquid outlet by the valve body of flap is stated to block.
The piston rod of pneumatic stopping valve runs through valve body and cylinder two parts, between piston rod and the cylinder and the piston
It has to be sealed between bar and valve body, for common pneumatic stopping valve, often in the piston rod and the cylinder
Between, independent sealing mechanism is set between the piston rod and the valve body, in pneumatic operated valve use process, piston rod and sealing
There is friction between mechanism, so that sealing mechanism is easier to be damaged, needs to change entire gas when the sealing of cylinder and piston bar is deteriorated
Cylinder, when valve body and piston rod packing variation need to change entire valve body, cost is often higher.
Summary of the invention
In order to solve the above technical problems, the present invention, which provides one kind, can guarantee that the pilot-operated type of valve seal performance pneumatically ends
Valve.
A kind of guide type valve, including double flange connectors, wherein
Double flange connectors include main body, and upper flange piece and lower flange piece, institute is respectively set in the both ends of the main body
Main body is stated through setting through-hole, two sealing rings are set close to the position of the upper flange piece in the through-hole, in the through-hole
V-seal device is set close to the position of the lower flange piece, spring retainer plate, the bullet is arranged in one end of V-seal device
Counterbalance spring is uniformly arranged on spring retainer plate, the padding-locking nut for the annular that is spirally connected in the through-hole, the padding-locking nut
Contradict the counterbalance spring, the upper flange piece is tightly connected cylinder, and the lower flange piece is tightly connected valve body, in the valve body
Cavity is set, and the cavity is connected to liquid outlet and inlet on the valve body；
Piston is set in the cylinder, and the chamber of the piston two sides is communicated with manipulation gas and connects mouth, consolidates on the piston
Surely there is piston rod, the piston rod is through the through-hole and extends in the cavity of the valve body, and the end of the piston rod is set
Guide's flap is set, guide's flap is located at the inner cavity of main valve clack, and main valve clack movement turns off or on the liquid outlet.
Preferably, two manipulation gas connect mouth and are connected to two five electric change valves by bypass line respectively, described
Two five electric change valves are connected to gas source.
Preferably, opening is arranged in one end of the cylinder, and the opening is bolted with cylinder plug.
Preferably, the inlet and the liquid outlet are respectively connected with connector, and the side wall of the connector is provided with protrusion,
Flange shoulder circle is placed in the protrusion side, and fastening bolt is fixed on the valve body through the flange shoulder circle.
Preferably, circular hole is arranged along axis in the main valve clack, and convex annular is arranged on the inner wall at the circular hole place open at one end
It rises, the circular hole other end is spirally connected main valve clack locking nut, the institute between the annular protrusion and the main valve clack locking nut
The guide's flap that is slidably connected in circular hole is stated, the circular hole side wall setting close to the annular protrusion is connected to the cavity
Circular hole, the piston rod extend to the fixed guide's flap in one end in the circular hole through the main valve clack locking nut,
One end movement of the main valve clack turns off or on the liquid outlet.
Preferably, the main valve clack contradicts the seal gasket of one end setting annular of the liquid outlet.
Preferably, sealing is set between the lower flange piece and the valve body between the upper flange piece and the cylinder
Pad.
Preferably, the V-seal device includes pressure ring, V-shaped seal ring and bracing ring, and the pressure ring is fixed on described logical
In hole, the bracing ring is vertically arranged on the pressure ring, multiple V-shaped seal rings are fixed in the side arrangement of the bracing ring,
The wedge angle of the V-shaped seal ring contradicts the spring retainer plate, and the inside of the V-shaped seal ring contradicts the piston rod.
Compared with the relevant technologies, guide type valve provided by the invention is had the following beneficial effects:
Guide type valve provided by the invention connects the cylinder and valve body by double flange connectors, described
Through-hole is set in double flange connectors, sealing mechanism is set in the through-hole, the piston rod is slidably connected to the through-hole, makes
It obtains the sealing between the piston rod and the cylinder between the piston rod and the valve body and passes through double flange connector realities
It is existing, when sealing mechanism damage, sealing mechanism is only replaced, and guide type valve provided by the invention is in air pressure abundance
In the case where occur that piston rod movement is slow, and flap closes slow situation, whether can occur according in the cylinder
The case where liquid directly judge be sealing between double flange connectors and the piston rod go wrong or piston with
Sealing between cylinder goes wrong.
In addition, the middle pressurized air source stable with unification using two five electric change valves, that is, can control the work
Fill in two sides the indoor inflation/deflation of chamber, assemble when the guide type valve it is easy to connect, use when it is easy to operate；The opening
On the one hand setting with cylinder plug conveniently clears up cylinder interior by the opening, conveniently look into when on the other hand checking
It sees the liquid case in cylinder, judges failure cause；The setting of the connector facilitates the guide type valve connecting pipe；
The flap using the main valve clack and the cooperation of guide's flap form, when valve body is integrally opened, small described of first open area
Guide's flap, so that the pressure balance of main valve clack two sides is then turned on main valve clack, so that in the case that manifold pressure is certain, it is required
Opening force it is small, and required opening force is small so that the piston area is smaller, so that the volume of the cylinder is smaller；Institute
One end setting seal gasket that main valve clack contradicts the liquid outlet is stated, so that the main valve clack and the liquid outlet contradict Shi Nenggeng
Good sealing；Gasket is set between double flange connectors and the cylinder, valve body so that double flange connectors with
Better tightness between the cylinder, valve body；When the V-shaped seal ring is worn, the counterbalance spring is solid by the spring
Fixed circle compresses the V-shaped seal ring, so that the V-shaped seal ring still can closely contradict the piston rod.
Detailed description of the invention
Fig. 1 is a kind of structure sectional view of preferred embodiment of pilot-operated type pneumatic stopping valve provided by the invention；
Fig. 2 is the schematic diagram of pilot-operated type pneumatic stopping valve provided by the invention；
Fig. 3 is the structural schematic diagram amplified at A shown in FIG. 1；
Fig. 4 is the structural schematic diagram of V-seal device shown in Fig. 1；
Fig. 5 is the structural schematic diagram amplified at B shown in FIG. 1；
Fig. 6 is two-position five-way solenoid directional control valve structural schematic diagram shown in Fig. 2.
Figure label and meaning: 1, cylinder, 2, piston, 3, valve body, 4, main valve clack, 5, guide's flap, 6, two-position five-way electricity
Magnetic reversal valve, 7, bypass line, 8, manipulation gas meet mouth, 9, double flange connectors, 10, V-seal device, 10-1, pressure ring, 10-
2, V-shaped seal ring, 10-3, bracing ring, 11, counterbalance spring, 12, spring retainer plate, 13, padding-locking nut, 14, connector, 15,
Flange shoulder circle, 16, fastening bolt, 17, sealing ring, 18, main valve clack locking nut, 19, star circle, 20, wear ring, 21, cylinder
Plug, 22, piston rod.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are please referred to, wherein Fig. 1 is that pilot-operated type provided by the invention is pneumatic
A kind of structure sectional view of preferred embodiment of shut-off valve；Fig. 2 is the schematic diagram of pilot-operated type pneumatic stopping valve provided by the invention；Figure
3 structural schematic diagram to amplify at A shown in FIG. 1 shows a kind of preferred embodiment of sealing mechanism at double flange connectors
Structure；Fig. 4 is the structural schematic diagram of V-seal device shown in Fig. 1；Fig. 5 is the structural schematic diagram amplified at B shown in FIG. 1,
Show a kind of structure of preferred embodiment of the flap；Fig. 6 is two-position five-way solenoid directional control valve structural representation shown in Fig. 2
Figure.
As shown in fig.1, a kind of guide type valve provided by the invention includes: cylinder 1, piston 2, valve body 3, main valve clack
4, guide's flap 5, double flange connectors 9, manipulation gas connect mouth 8, sealing mechanism and piston rod 22, double flange connectors 9
Side connects the cylinder 1, and the other side of double flange connectors 9 connects the valve body 3, is slidably connected in the cylinder 1
The piston 1, described 1 one end of piston connect the piston rod 22, and the piston rod 22 extends through double flange connectors 9
Guide's flap 5 is arranged in one end in the valve body 3, has been slidably socketed the main valve clack 4 outside guide's flap 5.Tool
In body implementation process, the specific connection embodiment of above structure is as follows:
The cylinder 1 is cylindrical, and the cylinder 1 is the middle air cylinder of 5MPa, and opening is arranged in one end of the cylinder 1,
The opening is bolted with cylinder plug 21, and be slidably connected the piston 2 in the cylinder 1, two circle of periphery setting of the piston 2
Wear ring 20, the periphery of the piston 2 is arranged the star and encloses 19, Xiang Suoshu cylinder charge gas between two wear rings 20
The effect that the power of main valve clack is acted on when the uneven and switch valve of body impact, leads to 2 discontinuity of piston and generates side
When to load, increased friction between the piston 2 and the cylinder 1 be easy to cause the damage of the piston 2 and the cylinder 1,
And the setting of the wear ring 20 can be avoided the piston 2 when there is lateral load and contact with the cylinder 1, to avoid phase
Mutual friction causes to damage, and star circle 19 guarantees the leakproofness of the pistons 2, and the piston 2 is by the cylinder 1
Space is divided into epicoele and cavity of resorption, and the epicoele and the cavity of resorption are respectively communicated with the setting manipulation gas and connect mouth 8, two manipulations
Gas connects mouth 8 and is connected to two five electric change valves 6 by bypass line 7 respectively, and two five electric change valves 6 are connected to gas
Source, specifically refering to Fig. 6, two interfaces of a and b of two five electric change valves 6 connect institute by the bypass line 7
It states manipulation gas and connects mouth 8, d interface connects the gas source；The gas bar 1 connects double flange connectors 9.
Double flange connectors 9 include cylindrical main body, and upper flange piece and laxative remedy is respectively set in the both ends of the main body
The piston rod 22 is arranged in blue piece, main body sliding in setting through-hole, the through-hole, and the through-hole is close to the upper method
Two O shape slots are arranged in one end of blue piece, and the fixed setting sealing ring 17, the inner wall of the sealing ring 17 support in the O shape slot
The piston rod 22 is touched, the other end of the close lower flange piece expands outward in the through-hole, so that the end of the through-hole
The groove-like structure of annular is formed, V-seal device 10 is fixedly installed on the annular surface of the groove-like structure, specifically, the V-type
Sealing device 10 includes that pressure ring 10-1, V-shaped seal ring 10-2 and bracing ring 10-3, the pressure ring 10-1 are fixed on groove-like structure
On annular surface, the bracing ring 10-3, cell wall of the bracing ring along the groove-like structure are vertically arranged on the pressure ring 10-1
Setting, the fixed multiple V-shaped seal ring 10-2 of side arrangement of the bracing ring 10-3, the point of the V-shaped seal ring 10-2
Angle contradicts the spring retainer plate 11 of annular, and the inside of the V-shaped seal ring 10-2 contradicts the piston rod 22, the channel-shaped
The padding-locking nut 13 for the annular that is spirally connected in structure, the padding-locking nut 13 contradicts the counterbalance spring 12, described to fill out
Material locking nut 13 makes the counterbalance spring 12 be maintained at compressive state, and the upper flange piece is bolted to connection described
Cylinder 1 when connection, places gasket, the lower flange piece is bolted institute between the upper flange piece and the cylinder 1
It states valve body 3, when connection, gasket is placed between the lower flange piece and the valve body 3, guarantees double flange connectors and institute
State the leakproofness between cylinder 1 and the valve body 3.
3 shape of valve body is hexahedron, the cylindrical cavity of setting in valve body, and spiral shell is arranged on the outer wall of the valve body 3
Hole, the adjacent two sides of the valve body 3 are fixed with the connector 14 by fastening bolt 16 and flange shoulder circle 15, and the cavity passes through
Liquid outlet and inlet are respectively communicated with the connector 14, specifically, the side wall of the connector 14 is provided with protrusion, the protrusion
Flange shoulder circle 15 is placed in side, and fastening bolt 16 is fixed on the screw hole on the valve body 3, the sky through the flange shoulder circle 15
The intracavitary setting main valve clack 4, the main valve clack is in a circular table shape, and circular hole, described circular hole one end is arranged along axis in the main valve clack 4
Inner wall on inwardly protruding formation annular protrusion, the section of the annular protrusion is round in a quarter, so that the circular hole at the end
Opening is in horn-like, the circular hole other end setting internal screw thread, and corresponding outer spiral shell is arranged on annular main valve clack locking nut 18
Line, the main valve clack locking nut 18 are bolted in the other end of the circular hole, the annular protrusion and the main valve clack locking screw
Be slidably connected guide's flap 5 cylindrical in the circular hole between mother 18, close to the circle of the annular protrusion
Side wall setting in hole is connected to the through hole of the cavity, and the piston rod 22 extends to the circle through the main valve clack locking nut
The fixed guide's flap 5 in one end in hole, one end of the main valve clack 4 is mobile to contradict the liquid outlet, the main valve
Valve 4 contradicts the seal gasket of one end setting annular of the liquid outlet, and the round and smooth protrusion of setting annular, described at the liquid outlet
Sealant falls the upper correspondence round and smooth protrusion setting groove.
The principle of guide type valve provided by the invention is as follows:
Between cylinder 1 and the piston rod 22 described in guide type valve provided by the invention and the valve body 3 and institute
The sealing between piston rod 22 is stated by only needing to change in the double setting of flange connectors 9 sealing mechanisms realizations, damage
Double flange connectors 9.
The interface a is connected with the epicoele below, the case where cavity of resorption connects the interface b illustrates that work time control
The two-position five-way solenoid directional control valve 6 is made, so that the gas source of interface d connection is inflated by the interface a to the epicoele,
The cavity of resorption is connected to the interface e by the interface b at this time, and after the inflation of Xiang Suoshu epicoele, the piston 2 is in the cylinder 1
Interior movement, the piston 2 push it is described under intracavitary gas be discharged through the interface b and interface e, and the mobile band of the piston 2
It is mobile to move the piston rod 22, the piston rod 22 drives guide's flap 5 to move down, and guide's flap 5 is no longer right
The main valve clack 4 constrains, and moves down under the action of underwater in 4 self gravity of main valve clack and the valve body 3, will be described
Liquid outlet blocks, and guide's flap 5 continues to move to contradict the annular protrusion will be between the through hole and the liquid outlet
It blocks, so that the main valve clack 4 and guide's flap cooperation thoroughly block the liquid outlet, controls the two-position five-way electricity
Magnetic reversal valve 6, so that the gas source of interface d connection is inflated by the interface b to the cavity of resorption, the epicoele passes through at this time
The interface a is connected to the interface c, and after the inflation of Xiang Suoshu cavity of resorption, the piston 2 moves in the cylinder 1, the piston 2
The upper intracavitary gas is pushed to be discharged through the interface a and interface c, and the mobile drive piston rod 22 of the piston 2 moves
Dynamic, the piston rod 22 drives guide's flap 5 to move up, and guide's flap 5 is due to the hydraulic pressure that area is small and bears
Small, when the piston rod 22 moves up, guide's flap 5 first follows movement so that liquid flowed to by the through hole it is described
At liquid outlet, the pressure at 4 both ends of main valve clack is balanced, guide's flap 5 continues to move up, and drives the main valve
Valve 4 leaves the liquid outlet, will open at the liquid outlet.
Guide type valve provided by the invention connects the cylinder 1 and valve body 3, institute by double flange connectors 9
It states and through-hole is set in double flange connectors 9, sealing mechanism is set in the through-hole, the piston rod 22 is slidably connected to described logical
Hole, so that the sealing between the piston rod 22 and the cylinder 1, between the piston rod 22 and the valve body 3 passes through described pair
The sealing mechanism in flange connector 9 is realized, when sealing mechanism damage, only replaces sealing mechanism, and this hair
The guide type valve of bright offer occurs that the piston rod 22 movement is slow, and flap is closed slow in the case where air pressure abundance
Situation can directly judge to be double flange connectors 9 and the piston rod according to occurring the case where liquid in the cylinder 1
Sealing between 22 goes wrong or the sealing between the piston 22 and the cylinder 1 goes wrong also or the two is same
When go wrong.
In addition, can control 2 two sides of piston with an inflation source is unified using two five electric change valves 6
The indoor inflation/deflation of chamber, assemble when the guide type valve it is easy to connect, use when it is easy to operate；The opening and cylinder
The setting of plug 21 inside the cylinder 1 on the one hand conveniently by the opening to clearing up, when on the other hand checking conveniently
It checks the liquid case in the cylinder 1, judges failure cause；The setting of the connector 14 facilitates the guide type valve
Connecting pipe；The form that the flap is cooperated using the main valve clack 4 with guide's flap 5, when valve body is integrally opened, first opening face
The small guide's flap 5 of product, so that the pressure balance of 4 two sides of the main valve clack is then turned on the main valve clack 4, so that in pipeline
In the case that pressure is certain, required opening force is small, and required opening force is small so that 2 area of piston is smaller, to make
The volume for obtaining the cylinder 1 is smaller；The main valve clack 4 contradicts one end setting seal gasket of the liquid outlet, so that the master
Flap 4 and the liquid outlet can better seals when contradicting；It is set between double flange connectors 9 and the cylinder 1, valve body 3
Gasket is set, so that the better tightness between double flange connectors 9 and the cylinder 1, valve body 3；The V-shaped seal ring
When 10-2 is worn, the counterbalance spring 12 compresses the V-shaped seal ring 10-2 by the spring retainer plate 11, so that the V
Type sealing ring 10-2 still can closely contradict the piston rod 22.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (8)
1. a kind of guide type valve, which is characterized in that including double flange connectors (9), wherein
Double flange connectors (9) include main body, and upper flange piece and lower flange piece is respectively set in the both ends of the main body, described
Two sealing rings (17), the through-hole is arranged close to the position of the upper flange piece in setting through-hole, the through-hole in main body
V-seal device (10) are arranged in the position of the interior close lower flange piece, and one end setting spring of V-seal device (10) is fixed
It encloses (11), is uniformly arranged counterbalance spring (12) on the spring retainer plate (11), the padding-locking for the annular that is spirally connected in the through-hole
Nut (13), the padding-locking nut (13) contradict the counterbalance spring (12), and the upper flange piece is tightly connected cylinder
(1), the lower flange piece is tightly connected valve body (3), and cavity is arranged in the valve body (3), and the cavity is connected to the valve body (3)
On liquid outlet and inlet；
Piston (2) are set in the cylinder (1), the chamber of piston (2) two sides is communicated with manipulation gas and connects mouth (8), described
It is fixed on piston (2) piston rod (22), the piston rod (22) runs through the through-hole and extends to the cavity of the valve body (3)
Interior, guide's flap (5) are arranged in the end of the piston rod (22), and guide's flap (5) is located at the inner cavity of main valve clack (4), and
Main valve clack (4) movement turns off or on the liquid outlet.
2. guide type valve according to claim 1, which is characterized in that two manipulation gas connect mouth (8) and lead to respectively
It crosses bypass line (7) and is connected to two five electric change valves (6), two five electric change valves (6) are connected to gas source.
3. guide type valve according to claim 1, which is characterized in that opening, institute is arranged in one end of the cylinder (1)
It states opening and is bolted with cylinder plug (21).
4. guide type valve according to claim 1, which is characterized in that the inlet and the liquid outlet are all connected with
Have connector (14), the side wall of the connector (14) is provided with protrusion, and the protrusion side places flange shoulder circle (15), fastens spiral shell
Bolt (16) is fixed on the valve body (3) through the flange shoulder circle (15).
5. guide type valve according to claim 1, which is characterized in that guide is arranged along axis in the main valve clack (4)
Circular hole, is arranged annular protrusion on the inner wall at guide's circular hole place open at one end, and the circular hole other end is spirally connected main valve clack locking
Nut (18), be slidably connected in the circular hole between the annular protrusion and the main valve clack locking nut guide's flap
(5), the circular hole of the cavity is connected to close to the circular hole side wall setting of the annular protrusion, the piston rod (22) runs through institute
State the fixed guide's flap (5) in one end that main valve clack locking nut extends in the circular hole, one end of the main valve clack (4)
Movement turns off or on the liquid outlet.
6. guide type valve according to claim 5, which is characterized in that contradict the main valve clack of the liquid outlet
(4) seal gasket of one end setting annular.
7. guide type valve according to claim 1, which is characterized in that the upper flange piece and the cylinder (1) it
Between gasket is set between the lower flange piece and the valve body (3).
8. guide type valve according to claim 1, which is characterized in that the V-seal device (10) includes pressure ring
(10-1), V-shaped seal ring (10-2) and bracing ring (10-3), the pressure ring (10-1) are fixed in the through-hole, the pressure ring
It is vertically arranged on (10-1) bracing ring (10-3), the fixed multiple V-types of side arrangement of the bracing ring (10-3) are close
The wedge angle of seal (10-2), the V-shaped seal ring (10-2) contradicts the spring retainer plate (11), the V-shaped seal ring (10-
2) inside contradicts the piston rod (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064580.3A CN109854754A (en) | 2019-01-23 | 2019-01-23 | A kind of guide type valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910064580.3A CN109854754A (en) | 2019-01-23 | 2019-01-23 | A kind of guide type valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109854754A true CN109854754A (en) | 2019-06-07 |
Family
ID=66895820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910064580.3A Pending CN109854754A (en) | 2019-01-23 | 2019-01-23 | A kind of guide type valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109854754A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178211A (en) * | 2020-09-03 | 2021-01-05 | 湖北三江航天红峰控制有限公司 | Ultralow-temperature electromagnetic pneumatic stop valve |
| CN114165603A (en) * | 2021-02-24 | 2022-03-11 | 常德翔宇设备制造有限公司 | Special stop valve for oxygen |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167153A2 (en) * | 2000-06-28 | 2002-01-02 | Westinghouse Air Brake Technologies Corporation | ECP manifold vent valve insert |
| CN101506563A (en) * | 2006-08-25 | 2009-08-12 | 费希尔控制产品国际有限公司 | Low friction live-loaded packing |
| CN201461980U (en) * | 2009-07-30 | 2010-05-12 | 重庆世壮仪器仪表有限公司 | Exhaust adsorption fully-sealing program-controlled valve |
| CN202220860U (en) * | 2011-08-10 | 2012-05-16 | 潘挺宇 | Pneumatic stop valve |
| CN202733150U (en) * | 2012-07-11 | 2013-02-13 | 南通高中压阀门有限公司 | Low-dissipation packing loss self-compensating system |
| CN207145634U (en) * | 2017-08-01 | 2018-03-27 | 四川勃朗蜀威科技有限公司 | A kind of pilot-operated type adjusting valve valve core structure |
-
2019
- 2019-01-23 CN CN201910064580.3A patent/CN109854754A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1167153A2 (en) * | 2000-06-28 | 2002-01-02 | Westinghouse Air Brake Technologies Corporation | ECP manifold vent valve insert |
| CN101506563A (en) * | 2006-08-25 | 2009-08-12 | 费希尔控制产品国际有限公司 | Low friction live-loaded packing |
| CN201461980U (en) * | 2009-07-30 | 2010-05-12 | 重庆世壮仪器仪表有限公司 | Exhaust adsorption fully-sealing program-controlled valve |
| CN202220860U (en) * | 2011-08-10 | 2012-05-16 | 潘挺宇 | Pneumatic stop valve |
| CN202733150U (en) * | 2012-07-11 | 2013-02-13 | 南通高中压阀门有限公司 | Low-dissipation packing loss self-compensating system |
| CN207145634U (en) * | 2017-08-01 | 2018-03-27 | 四川勃朗蜀威科技有限公司 | A kind of pilot-operated type adjusting valve valve core structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112178211A (en) * | 2020-09-03 | 2021-01-05 | 湖北三江航天红峰控制有限公司 | Ultralow-temperature electromagnetic pneumatic stop valve |
| CN114165603A (en) * | 2021-02-24 | 2022-03-11 | 常德翔宇设备制造有限公司 | Special stop valve for oxygen |
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Application publication date: 20190607 |
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