CN107830200A - A kind of two-bit triplet rapid reversal valve - Google Patents

A kind of two-bit triplet rapid reversal valve Download PDF

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Publication number
CN107830200A
CN107830200A CN201710948155.1A CN201710948155A CN107830200A CN 107830200 A CN107830200 A CN 107830200A CN 201710948155 A CN201710948155 A CN 201710948155A CN 107830200 A CN107830200 A CN 107830200A
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CN
China
Prior art keywords
cylinder
valve
valve seat
buffer
section
Prior art date
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Pending
Application number
CN201710948155.1A
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Chinese (zh)
Inventor
杨光
边东伟
王波
程树伟
牟晓勇
杨振宁
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Xian Aerospace Propulsion Institute
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Xian Aerospace Propulsion Institute
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Publication date
Application filed by Xian Aerospace Propulsion Institute filed Critical Xian Aerospace Propulsion Institute
Priority to CN201710948155.1A priority Critical patent/CN107830200A/en
Publication of CN107830200A publication Critical patent/CN107830200A/en
Pending legal-status Critical Current

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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/22—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke
    • F15B15/226—Other details, e.g. assembly with regulating devices for accelerating or decelerating the stroke having elastic elements, e.g. springs, rubber pads
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/46—Attachment of sealing rings
    • F16K1/465—Attachment of sealing rings to the valve seats
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Actuator (AREA)

Abstract

The present invention relates to a kind of two-bit triplet rapid reversal valve.The sealing surface of valve element and striking face separation in the valve, avoiding front cover can be quickly damaged under the high-speed impact of valve element, the problem of causing valve leak, simultaneously, buffer cell is installed on pneumatic actuator, the movement velocity of valve element can be substantially reduced when valve event closes to an end, impact of the valve element to valve seat is reduced on the premise of the valve event time is had substantially no effect on, adds the service life of valve element valve seat.

Description

A kind of two-bit triplet rapid reversal valve
Technical field
The invention belongs to reversal valve technical field, is related to a kind of two-bit triplet rapid reversal valve.
Background technology
, it is necessary to the accurate measurement sometime interior gas volume by pipeline, this is required some high-precision measuring systems Metering system has the reversal valve that can switch gas flow direction rapidly.To ensure the accuracy of metering, it is desirable to which valve is not only Pipeline switching is completed as quickly as possible, also to ensure that valve each actuation time is essentially identical.Existing big mouth in market Footpath two-bit triplet reversal valve typically selects tee ball valve structure, and its cost simple in construction is relatively low, but the valve event time is longer, often Secondary actuation time scattered error is larger, and high pressure conditions sealing property is poor, limits the precision of accurate metering system.
General quick valve uses the less pneumatic stopping valve structure of spool stroke, but the valve element of high-speed motion can directly hit Valve seat, great impact is produced to valve seat.In traditional reversal valve, valve seat striking face is also sealing surface of seat (valve element and valve body Contact surface is pyramidal structure, does not have O-ring seal during sealing, is sealed only by the contact of contact surface), narrower sealing Face can be quickly damaged under the high-speed impact of valve element, cause valve leak；
In addition, traditional cylinder buffer device is using air cushion as main buffer structure, the cushion stroke of air cushion buffering structure Long, buffering course poor repeatability, cushion effect can not be corrected as requested, the repeatability of valve event time be influenceed, for high pressure The gas of big flow by when, due to impact it is larger, air cushion buffering can not meet requirement.
The content of the invention
In order to solve the problems, such as in background technology, the invention provides the fast quick change that a kind of sealing surface and striking face are separated To valve, avoiding front cover can be quickly damaged under the high-speed impact of valve element, the problem of causing valve leak.
The present invention concrete technical scheme be：
The invention provides a kind of two-bit triplet rapid reversal valve, including commutation valve body, adpting flange and pneumatically hold Row device；
Pneumatic actuator includes high-pressure cylinder, support bar；
Commutation valve body includes valve body, valve element, pressure cylinder, valve rod, main road valve seat and branch road valve seat；
Pressure cylinder is sleeved on valve inner, and main road valve seat, bypass valve seat are located inside pressure cylinder, and main road valve seat is arranged on pressure cylinder Middle part, branch road valve seat are arranged on the bottom of pressure cylinder；Branch road valve seat and main road valve seat pressure cylinder is divided into the upper pressure chamber that is interconnected, in Press chamber and push chamber, valve element is located in middle pressure chamber, and one end of valve rod is connected with valve element, the work of the other end and the high-pressure cylinder Stopper rod connects；
The valve body is provided with gas outlet in corresponding middle pressure chamber with the position for pushing chamber；
Adpting flange is fixedly mounted on valve body upper surface, and adpting flange passes through they sup-port with the high-pressure cylinder；
It is characterized in that：
The lower surface installation main road pressure ring of main road valve seat, the inner ring surface of main road pressure ring and the lower surface of main road valve seat form limit Position step is as valve element upper limit；The upper surface installation branch road pressure ring of branch road valve seat, the inner ring surface and branch road valve seat of branch road pressure ring Upper surface formed limited step as valve element lower limit；
The position that the inner ring surface of main road pressure ring and the lower surface of main road valve seat are intersected offers first that section is circular arc Annular groove；
The position that the inner ring surface of branch road pressure ring and the upper surface of branch road valve seat are intersected offers second that section is circular arc Annular groove；
O-ring seal is mounted in first annular groove and the second annular groove.
In order to meet the needs of quickly commutating, ensure the service life of high-pressure cylinder, pneumatic actuator of the invention also exists On the basis of high-pressure cylinder, increase devises buffer cell, and it specifically has two kinds of structures：
Unilateral buffer cell：
High-pressure cylinder includes cylinder under cylinder barrel, cylinder piston, a cylinder piston rod, cylinder upper cylinder cover and cylinder Lid；The cylinder piston rod includes top linkage section, spacing section of middle part and bottom linkage section；
The pneumatic actuator also includes unilateral buffer cell；Unilateral buffer cell includes being arranged on the slow of cylinder cap under cylinder Rush device cylinder barrel, the upper buffer spring in buffer cylinder barrel and lower buffer spring；
Top linkage section sequentially passes through buffer spring, buffer cylinder barrel, cylinder bottom end cover and is connected with the cylinder piston, Bottom linkage section sequentially passes through lower buffer spring, buffer cylinder barrel is connected with the valve rod；The external diameter at spacing section of the middle part is big In top linkage section and bottom linkage section；Spacing section of middle part is in buffer cylinder barrel；Upper buffer spring is sleeved on top connection Section and one end are pressed against buffer cylinder barrel inside upper surface, and the other end is pressed against the spacing section of upper end in middle part；Lower buffer spring suit In bottom, linkage section and one end are pressed against buffer cylinder barrel bottom inner surface, and the other end is pressed against the spacing section of lower end in middle part.
Bilateral buffer unit
The high-pressure cylinder includes cylinder barrel, cylinder piston, upper cylinder piston rod, lower cylinder piston rod, cylinder upper end Lid and cylinder bottom end cover；The upper cylinder piston rod includes top free segment, spacing section of middle part and bottom linkage section；It is described Lower cylinder piston rod includes top linkage section, spacing section of middle part and bottom linkage section；
The pneumatic actuator also includes bilateral buffer unit, and the bilateral buffer unit includes being arranged on cylinder upper cylinder cover Upper buffer cell and the lower buffer cell installed in lower cylinder cap；Upper buffer cell include with cylinder barrel be connected upper cylinder barrel, Upper buffer spring in upper cylinder barrel；Lower buffer cell includes the lower cylinder barrel connected with cylinder barrel, in lower cylinder barrel Lower buffer spring；
Wherein, the top free segment of upper cylinder piston rod sequentially passes through from bottom to top stretches out on buffer spring after cylinder barrel Cylinder barrel；Bottom linkage section is connected with the cylinder piston, and the external diameter at spacing section of the middle part is more than top free segment and bottom connects Connect section；Buffer spring is installed between the upper end that spacing section of middle part and upper cylinder barrel inside upper surface；
The top linkage section of lower cylinder piston rod is connected with the cylinder piston, and bottom linkage section sequentially passes through lower buffering elastic Spring, lower cylinder barrel are connected with the valve rod；The external diameter at spacing section of the middle part is more than top linkage section and bottom linkage section；Middle part limits Lower buffer spring is installed between the lower end of position section and lower cylinder barrel bottom inner surface.
Further, in the form of above two buffer cell, between upper buffer spring and spacing section of middle part and under Buffering piston is respectively provided between buffer spring and spacing section of middle part.
In order to ensure the rigidity of striking face, extend the service life of part, the lower surface of main road valve seat, branch road valve seat it is upper Surface, the upper surface of valve element and valve element lower surface Jun Dui are welded with hard alloy.
In order to meet the use demand quickly to commutate, the valve element is to offer lightening recesses on cylindric and valve element.
In order to facilitate change cushion effect size, the upper buffer spring and lower buffer spring are made of disk spring.
The beneficial effects of the invention are as follows：
1st, the valve seat separated using striking face with sealing surface；Sealing between valve seat and valve seat pressure ring is with O-ring using easy Structure design is changed, if leakage failure occurs in valve seat, need to only change the O-ring seal between the valve seat of damage and valve seat pressure ring, Valve body can be continuing with, and not only ensure that valve seat service life is grown, sealing is good, also maintains easily.
2nd, using high-pressure cylinder as pneumatic actuator, the executing agency carries adjustable cushion effect size and delayed valve The buffer cell of stroke length is rushed, the movement velocity of valve element can be substantially reduced when valve event closes to an end, substantially not Influence to reduce impact of the valve element to valve seat on the premise of the valve event time, increase the service life of valve element valve seat.
3rd, present invention built-up welding hard alloy on the striking face of valve element and valve seat, the service life of valve seat is extended.
4th, lightening grooves are offered on valve element of the invention, can adapt to the requirement of rapid reversal valve.
5th, buffer spring of the invention uses disk spring, can increase and reduce of disk spring according to requirements Number, facilitate the use demand of different scenes.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of reversing valve body.
Fig. 3 is Fig. 2 partial enlarged drawing.
Fig. 4 is the structure diagram of embodiment 1 (unilateral buffer cell).
Fig. 5 is the structure diagram of embodiment 2 (bilateral buffer unit).
Reference is as follows：
1- commutations valve body, 2- adpting flanges, 3- pneumatic actuators, 4- high-pressure cylinders, 5- support bars, 6- valve bodies, 7- valves Core, 8- pressure cylinders, 9- valve rods, 10- main roads valve seat, 11- branch roads valve seat, chamber, 13- middle pressure chambers, 14- is pressed to push chamber, 15- master on 12- Road pressure ring, 16- branch roads pressure ring, 17-O types sealing ring, 18- cylinder barrels, 19- cylinder pistons, 20- cylinder piston rods, 21- cylinders Cylinder cap under upper cylinder cover, 22- cylinders, 23- tops linkage section, spacing section in the middle part of 24-, 25- bottoms linkage section, 26- buffers cylinder barrel, Buffer spring, 29- buffering pistons, 30- upper cylinders piston rod, 31- lower cylinders piston rod, 32- under the upper buffer springs of 27-, 28- Cylinder barrel under the upper cylinder barrel of top free segment, 33-, 34-.
Embodiment
The present invention includes two parts content：First, devise the split type valve seat that a kind of striking face separates with sealing surface；Two It is to devise a kind of Quick pneumatic actuator with rigidity adjustable buffer device.
Design 1) split type valve seat construction
The reversal valve is immediate action valve, and the movement velocity of valve element is higher, and valve seat striking face is hit in valve event Power is larger.If using general valve seat construction, striking face is also sealing surface simultaneously, close under the quickly impact of motion valve element The front cover life-span can drastically be reduced；If increasing seal f ace width to improve the impact resistance of sealing surface, sealing difficulty can be increased again. In structure of reversing valve design, employ a kind of split type valve seat construction scheme and solve this contradiction, in new valve seat construction Sealing surface is no longer striking face, respectively built-up welding hard alloy on the striking face of valve seat and valve element, is sealed by being clipped in valve seat and valve RUBBER O type sealing ring between seat pressure ring is bonded completion with valve element.Concrete structure is as shown in Figure 1,2 and 3：
The reversal valve includes commutation valve body 1, adpting flange 2 and pneumatic actuator 3；
Pneumatic actuator 3 includes high-pressure cylinder 4, support bar 5；
Commutation valve body 1 includes valve body 6, valve element 7, pressure cylinder 8, valve rod 9, main road valve seat 10 and branch road valve seat 11；
Pressure cylinder 8 is sleeved on inside valve body 6, and main road valve seat 10, branch road valve seat 11 are located inside pressure cylinder 8, and main road valve seat 11 is pacified Mounted in the middle part of pressure cylinder 8, branch road valve seat 11 is arranged on the bottom of pressure cylinder 8；Branch road valve seat 11 and main road valve seat 10 split pressure cylinder Into interconnected upper pressure chamber 12, middle pressure chamber 13 and chamber 14 is pushed, valve element 6 is located in middle pressure chamber 13, one end of valve rod 9 and valve element 7 connections, the other end are connected with the piston rod of the high-pressure cylinder 4；
The valve body 6 is provided with gas outlet in corresponding middle pressure chamber 13 with the position for pushing chamber 14；
Adpting flange 2 is fixedly mounted on the upper surface of valve body 6, and adpting flange 2 and the high-pressure cylinder 4 pass through support bar 5 Support；
The lower surface installation main road pressure ring 15 of main road valve seat 10, the inner ring surface of main road pressure ring 15 and the following table of main road valve seat 10 Face forms limited step as valve element upper limit；The upper surface installation branch road pressure ring 16 of branch road valve seat 11, branch road pressure ring 16 it is interior The upper surface of anchor ring and branch road valve seat 11 forms limited step as valve element lower limit；
The position that the inner ring surface of main road pressure ring 15 and the lower surface of main road valve seat 10 are intersected offers section as circular arc First annular groove；
The position that the inner ring surface of branch road pressure ring 16 and the upper surface of branch road valve seat 11 are intersected offers section as circular arc Second annular groove；
O-ring seal 17 is mounted in first annular groove and the second annular groove.Specifically operation principle is：
Under the driving of high-pressure cylinder, valve element moves between main road valve seat and branch road valve seat.When valve core movement to upper valve At position when (i.e. main road valve seat), valve element is bonded completion sealing with the O-ring seal in main road valve seat, and gas flows out valve by branch road Door；At valve core movement to lower valve position when (i.e. branch road valve seat), it is close that valve element is bonded completion with the O-ring seal in branch road valve seat Envelope, gas flow out valve by main road, complete flow direction switching.
2) Quick pneumatic actuator with rigidity adjustable buffer device
In order to reduce the valve impact of valve element to valve seat in action, a kind of pneumatic execution with buffer cell is devised Device.
For designing herein, the present invention provides two kinds of different embodiments：
Embodiment 1 (unilateral buffer cell)
As shown in figure 4, high-pressure cylinder 4 is including on cylinder barrel 18,19, cylinder piston rods 20 of cylinder piston, cylinder Cylinder cap 22 under cylinder cap 21 and cylinder；The cylinder piston rod 20 includes top linkage section 23, spacing section 24 of middle part and bottom Linkage section 25；
Pneumatic actuator 3 also includes unilateral buffer cell；Unilateral buffer cell includes being arranged on the slow of cylinder cap 22 under cylinder Rush device cylinder barrel 26, upper buffer spring 27 and lower buffer spring 28 in buffer cylinder barrel 26；
Top linkage section 23 sequentially passes through buffer spring 27, buffer cylinder barrel 26, cylinder bottom end cover 22 and the cylinder Piston 19 connects, and bottom linkage section 25 sequentially passes through lower buffer spring 28, buffer cylinder barrel 26 is connected with the valve rod 9；Middle part Spacing section 24 of external diameter is more than top linkage section 23 and bottom linkage section 24；Middle part is located in buffer cylinder barrel 26 for spacing section 24； Upper buffer spring 27 is sleeved on top linkage section 23 and one end is pressed against the inside upper surface of buffer cylinder barrel 26, and the other end is pressed against 24 upper ends of spacing section of middle part；Lower buffer spring 28 is sleeved on bottom linkage section 25 and one end is pressed against subordinate in buffer cylinder barrel 26 Surface, the other end are pressed against spacing section of 24 lower ends in middle part.Wherein, it is between spacing section 24 of upper buffer spring 27 and middle part and lower slow Rush between spacing section 24 of spring 28 and middle part and be respectively provided with buffering piston 29.
Embodiment 2 (bilateral buffer unit)
Lived as shown in figure 5, high-pressure cylinder 4 includes cylinder barrel 18, cylinder piston 19, upper cylinder piston rod 30, lower cylinder Cylinder cap 22 under stopper rod 31 and cylinder upper cylinder cover 21 and cylinder；Upper cylinder piston rod 30 includes top free segment 32, middle part limit Position section 24 and bottom linkage section 25；Lower cylinder piston rod 31 includes top linkage section 23, and spacing section 24 of middle part and bottom connect Connect section 25；
Pneumatic actuator also includes bilateral buffer unit, and bilateral buffer unit is included installed in the upper slow of cylinder upper cylinder cover 21 Rush the lower buffer cell of cylinder cap 22 under unit and cylinder；Upper buffer cell include with cylinder upper end cover 21 be connected upper cylinder barrel 33, Upper buffer spring 27 in upper cylinder barrel 33；Lower buffer cell includes the lower cylinder barrel 34 connected with cylinder bottom end cover 22, is located at Lower buffer spring 28 in lower cylinder barrel 34；
Wherein, the top free segment 32 of upper cylinder piston rod 30 sequentially passes through buffer spring 27, upper cylinder barrel from bottom to top Stretched out after 33；Bottom linkage section 25 is connected with the cylinder piston 19, and it is free that the external diameter that spacing section 24 of the middle part is more than top Section 32 and bottom linkage section 25；Buffer spring is installed between the upper end that spacing section 24 of middle part and the inside upper surface of upper cylinder barrel 33 27；
The top linkage section 23 of lower cylinder piston rod 31 is connected with the cylinder piston 19, and bottom linkage section 25 sequentially passes through Lower buffer spring 28, lower cylinder barrel 34 are connected with the valve rod 9；The external diameter that spacing section 24 of middle part is more than top linkage section 23 and bottom Linkage section 25；Lower buffer spring 28 is installed between the lower end that spacing section 24 of middle part and the lower bottom inner surface of cylinder barrel 34.
Wherein, between spacing section 24 of upper buffer spring 27 and middle part and between spacing section 24 of lower buffer spring 28 and middle part It is respectively provided with buffering piston 29.
Having multi-disc disk spring to provide cushion effect in above two mode, in buffer cell (can change buffer work Fill in disk spring to adjust cushion effect size and buffering haul distance), when valve event closes to an end, piston rod is with buffering Device piston slap, buffering piston compression disk spring, valve core movement speed reduce, and alleviate impact of the valve element to valve seat.
When reversal valve performs quick commutation action, cylinder piston drives cylinder piston rod to move up and down, cylinder piston rod Realizing middle limiting section in the presence of upper buffer spring and lower buffer spring, realize buffering.

Claims (10)

1. a kind of two-bit triplet rapid reversal valve, including commutation valve body, adpting flange and pneumatic actuator；
Pneumatic actuator includes high-pressure cylinder, support bar；
Commutation valve body includes valve body, valve element, pressure cylinder, valve rod, main road valve seat and branch road valve seat；
Pressure cylinder is sleeved on valve inner, and main road valve seat, bypass valve seat are located inside pressure cylinder, and main road valve seat is arranged in pressure cylinder Portion, branch road valve seat are arranged on the bottom of pressure cylinder；Pressure cylinder is divided into be interconnected upper pressure chamber, middle pressure by branch road valve seat and main road valve seat Chamber and chamber is pushed, valve element is located in middle pressure chamber, and one end of valve rod is connected with valve element, the piston of the other end and the high-pressure cylinder Bar connects；
The valve body is provided with gas outlet in corresponding middle pressure chamber with the position for pushing chamber；
Adpting flange is fixedly mounted on valve body upper surface, and adpting flange passes through they sup-port with the high-pressure cylinder；
It is characterized in that：
The lower surface installation main road pressure ring of main road valve seat, the inner ring surface of main road pressure ring and the lower surface of main road valve seat form limiting stand Rank is as valve element upper limit；The upper surface installation branch road pressure ring of branch road valve seat, the inner ring surface of branch road pressure ring and branch road valve seat it is upper Surface forms limited step as valve element lower limit；
The position that the inner ring surface of main road pressure ring and the lower surface of main road valve seat are intersected offers section as the first annular of circular arc Groove；
The position that the inner ring surface of branch road pressure ring and the upper surface of branch road valve seat are intersected offers the second annular that section is circular arc Groove；
O-ring seal is mounted in first annular groove and the second annular groove.
2. two-bit triplet rapid reversal valve according to claim 1, it is characterised in that：The high-pressure cylinder includes cylinder cylinder Cylinder cap under cylinder, cylinder piston, a cylinder piston rod, cylinder upper cylinder cover and cylinder；The cylinder piston rod connects including top Connect section, spacing section of middle part and bottom linkage section；
The pneumatic actuator also includes unilateral buffer cell；Unilateral buffer cell includes the buffer for being arranged on cylinder cap under cylinder Cylinder barrel, the upper buffer spring in buffer cylinder barrel and lower buffer spring；
Top linkage section sequentially passes through buffer spring, buffer cylinder barrel, cylinder bottom end cover and is connected with the cylinder piston, bottom Linkage section sequentially passes through lower buffer spring, buffer cylinder barrel is connected with the valve rod；The external diameter at spacing section of the middle part is more than upper Portion's linkage section and bottom linkage section；Spacing section of middle part is in buffer cylinder barrel；Upper buffer spring be sleeved on top linkage section and One end is pressed against buffer cylinder barrel inside upper surface, and the other end is pressed against the spacing section of upper end in middle part；Lower buffer spring is sleeved on down Portion's linkage section and one end are pressed against buffer cylinder barrel bottom inner surface, and the other end is pressed against the spacing section of lower end in middle part.
3. two-bit triplet rapid reversal valve according to claim 2, it is characterised in that：The upper buffer spring limits with middle part Buffering piston is respectively provided between the section of position and between lower buffer spring and spacing section of middle part.
4. two-bit triplet rapid reversal valve according to claim 3, it is characterised in that：The lower surface of the main road valve seat, The upper surface of branch road valve seat, the upper surface of valve element and valve element lower surface Jun Dui are welded with hard alloy.
5. two-bit triplet rapid reversal valve according to claim 4, it is characterised in that：The valve element is cylindric and valve element On offer lightening recesses.
6. two-bit triplet rapid reversal valve according to claim 1, it is characterised in that：
The high-pressure cylinder include cylinder barrel, cylinder piston, upper cylinder piston rod, lower cylinder piston rod, cylinder upper end cover with And cylinder bottom end cover；The upper cylinder piston rod includes top free segment, spacing section of middle part and bottom linkage section；The lower gas Cylinder piston rod includes top linkage section, spacing section of middle part and bottom linkage section；
The pneumatic actuator also includes bilateral buffer unit, and the bilateral buffer unit is included installed in the upper of cylinder upper cylinder cover Buffer cell and the lower buffer cell installed in lower cylinder cap；Upper buffer cell includes the upper cylinder barrel connected with cylinder barrel, is located at Upper buffer spring in upper cylinder barrel；Lower buffer cell is lower slow including the lower cylinder barrel connected with cylinder barrel, in lower cylinder barrel Rush spring；
Wherein, the top free segment of upper cylinder piston rod sequentially passes through from bottom to top stretches out upper cylinder half after cylinder barrel on buffer spring Cylinder；Bottom linkage section is connected with the cylinder piston, and the external diameter at spacing section of the middle part connects more than top free segment with bottom Section；Buffer spring is installed between the upper end that spacing section of middle part and upper cylinder barrel inside upper surface；
The top linkage section of lower cylinder piston rod is connected with the cylinder piston, bottom linkage section sequentially pass through lower buffer spring, Lower cylinder barrel is connected with the valve rod；The external diameter at spacing section of the middle part is more than top linkage section and bottom linkage section；Middle part is spacing Lower buffer spring is installed between the lower end of section and lower cylinder barrel bottom inner surface.
7. two-bit triplet rapid reversal valve according to claim 6, it is characterised in that：The upper buffer spring limits with middle part Buffering piston is respectively provided between the section of position and between lower buffer spring and spacing section of middle part.
8. two-bit triplet rapid reversal valve according to claim 7, it is characterised in that：The lower surface of the main road valve seat, The upper surface of branch road valve seat, the upper surface of valve element and valve element lower surface Jun Dui are welded with hard alloy.
9. two-bit triplet rapid reversal valve according to claim 8, it is characterised in that：The valve element is cylindric and valve element On offer lightening recesses.
10. two-bit triplet rapid reversal valve according to claim 9, it is characterised in that：The upper buffer spring and lower slow Rush spring and use disk spring.
CN201710948155.1A 2017-10-12 2017-10-12 A kind of two-bit triplet rapid reversal valve Pending CN107830200A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710948155.1A CN107830200A (en) 2017-10-12 2017-10-12 A kind of two-bit triplet rapid reversal valve

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Application Number Priority Date Filing Date Title
CN201710948155.1A CN107830200A (en) 2017-10-12 2017-10-12 A kind of two-bit triplet rapid reversal valve

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Publication Number Publication Date
CN107830200A true CN107830200A (en) 2018-03-23

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113020328A (en) * 2021-02-08 2021-06-25 江门市新会区园达工具有限公司 High-precision roller type leveler

Citations (5)

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DE3636739A1 (en) * 1985-11-05 1987-05-14 Mowid Anstalt Valve
US20040075072A1 (en) * 2002-04-18 2004-04-22 Lanting Henry A. Pressurized valve seal
CN101135401A (en) * 2006-08-30 2008-03-05 娄征 Variable valve actuator with latches at both ends
CN101398096A (en) * 2007-09-29 2009-04-01 上海阀特流体控制阀门有限公司 Valve structure of pneumatic three-way regulating valve
US20140367601A1 (en) * 2013-06-18 2014-12-18 Egmo Ltd. Valve sealing assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3636739A1 (en) * 1985-11-05 1987-05-14 Mowid Anstalt Valve
US20040075072A1 (en) * 2002-04-18 2004-04-22 Lanting Henry A. Pressurized valve seal
CN101135401A (en) * 2006-08-30 2008-03-05 娄征 Variable valve actuator with latches at both ends
CN101398096A (en) * 2007-09-29 2009-04-01 上海阀特流体控制阀门有限公司 Valve structure of pneumatic three-way regulating valve
US20140367601A1 (en) * 2013-06-18 2014-12-18 Egmo Ltd. Valve sealing assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113020328A (en) * 2021-02-08 2021-06-25 江门市新会区园达工具有限公司 High-precision roller type leveler
CN113020328B (en) * 2021-02-08 2024-01-19 江门市新会区园达工具有限公司 High-precision roller type leveler

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Application publication date: 20180323