CN107477204B - A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system - Google Patents
A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system Download PDFInfo
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- CN107477204B CN107477204B CN201710926565.6A CN201710926565A CN107477204B CN 107477204 B CN107477204 B CN 107477204B CN 201710926565 A CN201710926565 A CN 201710926565A CN 107477204 B CN107477204 B CN 107477204B
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- dome
- top dome
- push rod
- air
- seal circle
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- 238000007789 sealing Methods 0.000 claims abstract description 53
- 210000004712 air sac Anatomy 0.000 claims abstract description 38
- 230000006698 induction Effects 0.000 claims description 25
- 229920001971 elastomer Polymers 0.000 claims description 14
- 239000005060 rubber Substances 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000010606 normalization Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 241001290864 Schoenoplectus Species 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 32
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- 230000008859 change Effects 0.000 abstract description 5
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- 230000005540 biological transmission Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
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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
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
This application provides a kind of dome valves for ultra dense phase Ultra-Low Speed air-transport system, including valve body, gasket, top plate and rotation cylinder, further include top dome, primary seal circle, air bladder lifting device and support frame；Top dome in close stance is moved upwards by air bladder lifting device air inlet drive and is moved downward by spring reset drive；To change the sealing principle of existing expandable seal circle inflation sealing, allow the partial size upper limit for being far longer than the material particles that air-transport system is conveyed that the gap between primary seal circle and top dome is done, so that the material particles left in dome valve will not be stuck at the gap between primary seal circle and top dome, to solve the problems, such as that the sealing ring in dome valve is easy to be worn from the external cause this aspect for causing existing expandable seal circle to wear, the service life of sealing ring in dome valve is improved.
Description
Technical field
The present invention relates to Pneumatic Conveying Technology fields, are used for ultra dense phase Ultra-Low Speed air-transport system more particularly, to one kind
Dome valve.
Background technique
Dome valve is a kind of valve for being widely used in air-transport system, it can cut off the flowing material into pressurized tank
Stream or static stock column are then shut off realization sealing, to guarantee that the pack completeness of pressurized tank is 100%, and need not be dependent on hair
The level-sensing device of tank sending, so control principle is simple and reliable.When chiseling property material is ground in processing, it is close to be embedded in may expand for dome valve seat
Seal guarantees that the operating pressure before and after valve is poor.
Currently, the structure of dome valve includes valve body, expandable seal circle, top plate, top dome and power dress in the prior art
It sets, expandable seal circle is fixed on top plate by upper support ring and lower support ring, and top plate is fixed on the upper ring surface of valve body,
Top dome is fixed on valve body by bearing, and the power intake of top dome and the power output end of power device are sequentially connected,
The course of work is substantially are as follows: when dome valve is opened, expandable seal circle deflation first, restore between top dome 0.3~
The gap of 0.5mm, then top dome turns to open position by close stance under the drive of power device；It is first when dome valve is closed
First top dome turns to close stance by open position under the drive of power device, then expandable seal circle inflation, will be with ball
The clearance seal of 0.3~0.5mm between top.
In the prior art, it will usually it combines a dome valve as one with a gate valve collocation and is used in conjunction with, and
Gate valve is usually arranged in the top of dome valve, the course of work of the two is substantially are as follows: when need to air-transport system pressure
When power tank feeding, dome valve events first are become opening from closing, and then plate valve events are opened, and are started to pressurized tank feeding；
When pressurized tank will be filled, gate valve first acts closing first, stream is truncated, then dome valve events, are become closing from opening
It closes, completes feed.
In the top of dome valve, one gate valve is set, mainly in view of dome valve is a kind of precision valve, higher cost,
It is protected using a kind of coarse and at low cost gate valve, before dome valve folding, first passes through the folding of gate valve
To be truncated or access powder stream, the weight of the powder stream undertaken with gate valve avoid material stream and circle as far as possible
Overhead-valve directly contacts, and equally also avoids card full with substance particle between expandable seal circle and top dome, reduces expandable seal
The abrasion of circle.
But even being provided with gate valve, after material stream is truncated in gate valve, inevitably always there is a small amount of material
Particle is scattered on dome valve, and then the major part in these material particles will be in the rotation of the weight and/or top dome of itself
At the gap for being subjected to displacement under equal power, and being finally stuck between expandable seal circle and top dome, over time, it is stuck in herein
Material particles are more and more, and as time goes by, gradually wear out to expandable seal circle, lead to expandable seal circle often quilt
It grinds away, the serious curtailment service life of expandable seal circle, expandable seal circle must shut down replacement after being worn in time, by
This also causes entire air-transport system often to be shut down, and influences to produce.
Therefore, how in the case where arranging in pairs or groups gate valve, the structure of dome valve is improved, reduces and even avoids material particles card
At gap between top dome and sealing ring, reduces and even material particles is avoided to improve making for sealing ring to the abrasion of sealing ring
The technical issues of with the service life being those skilled in the art's urgent need to resolve.
Summary of the invention
The purpose of the present invention is to provide a kind of dome valves for ultra dense phase Ultra-Low Speed air-transport system, pass through improvement
The structure of dome valve reduces and even material particles is avoided to be stuck at the gap between top dome and sealing ring, reduces and even avoids object
Expect abrasion of the particle to sealing ring, improves the service life of sealing ring.
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system, including valve body, gasket, top plate and rotation
Cylinder further includes top dome, the primary seal circle for top dome connection in sealing contact, air bladder lifting device and is used for
Support the support frame of the air bladder lifting device；
The primary seal circle is removably attached on the top plate by lower support ring；
Support frame as described above includes left branch leg, right supporting leg and support plate, the right supporting leg by right sliding bearing with it is described
The power output end of the piston rod of rotation cylinder is sequentially connected, and the left branch leg is fixed on the valve body by left sliding bearing
On, the left sliding bearing includes left sliding shaft sleeve and left rotary shaft, and the left branch leg includes left support arm and is used for and institute
The left casing of left rotary shaft pin shaft connection is stated, the right supporting leg includes right support arm and for the right-hand rotation with the right sliding bearing
The right casing of pivot pin axis connection；
The left support arm, support plate and right support arm constitute reverse U shape structure, and the plate face of the support plate is vertical
Plane where the longitudinal center line of the left support arm and the longitudinal center line of right support arm are common, and the support plate
Plate face be parallel to the left sliding bearing left rotary shaft longitudinal center line；
The air bladder lifting device include opening box, upper box cover, air bladder piece, thrust disc, push rod, spring and
Pneumatic hose；
The opening box is weldingly fixed in the mounting hole opened up in the support plate, and edge on the upper spherical surface of the top dome
Its vertical centerline offers the first internal thread through hole, and the exposed portion of the push rod is logical by raw material band and first internal screw thread
Hole sealing is threadedly coupled, and the top dome is connected through a screw thread in the exposed portion for being fixed on the push rod, the lower box of the opening box
Blow vent is offered on bottom；
Left plug hole is offered on the valve body, the left plug hole is located at the top of the left sliding bearing and the left side
The longitudinal center line of plug hole and the longitudinal center line of the left rotary shaft of the left sliding bearing are located in the same vertical plane and phase
It is mutually parallel；
Left rubber stopper is provided in the left plug hole；
The pneumatic hose passes through from the left rubber stopper and penetrates the inside that the left support arm enters the top dome
In cavity, the inner end of the pneumatic hose is connected to the vents seal；
The exposed parts of the left rubber stopper are whole to be wrapped up by sealant to seal；
The top dome in close stance is moved upwards by air bladder lifting device air inlet drive and is answered by spring
Position drives and moves downward, and the top dome in close stance is moved upwards most by air bladder lifting device air inlet drive
The sealing surface of the upper spherical surface and the primary seal circle of realizing the top dome eventually is tightly connected, and during top dome rotation
Push rod in the air bladder lifting device remains limit contract state, and during top dome rotation
The centre of sphere of the upper spherical surface of the top dome is on the longitudinal center line of the left rotary shaft of the left sliding bearing；
The upper of the sealing surface of foregoing description primary seal circle and the top dome in close stance is moved upwards in the top dome
Vertical spacing normalization between spherical surface remains a definite value in 5mm~20mm.
It preferably, further include jet blow device；
The jet blow device includes air guide lid and air induction hose；
The air guide lid is smaller part thin spherical shell shape, and the centre of sphere of the air guide lid is overlapped with the centre of sphere of the top dome, described
The second internal thread through hole is offered along its vertical centerline on the upper spherical surface of air guide lid；
The exposed portion of the push rod is threadedly coupled with second internal thread through hole, and the air guide lid passes through with the top dome
Threaded connection is sequentially fixed at from top to bottom in the exposed portion of the push rod, and the lower peripheral surface of the air guide lid is upper with the top dome
There are gaps between spherical surface to be used to form jet channel, and the upper surface of the push rod is concordant with the upper spherical surface of the air guide lid；
The shell thickness of the air guide lid is 1mm, and the radial width of the jet channel is 2mm；
Longitudinal center line on the upper surface of the push rod along the push rod offers downwards counterbore, heavy in the push rod
It is closed with plug in the upper aperture in hole；
It is opened up on the counterbore side wall of the push rod being located in jet channel there are six rectangular through-hole, each rectangular through-hole
Outward opening length is equal to the 1/6 of the outer diameter of the push rod, and six rectangular through-holes are divided into upper layer and lower layer, wherein three rectangular through-hole positions
In upper layer, remaining three rectangular through-holes are located at lower layer, and three rectangular through-holes on upper layer are circumferentially uniformly distributed for 360 °, and the three of lower layer
A rectangular through-hole is circumferentially uniformly distributed for 360 °, and three rectangular through-holes on upper layer and three rectangular through-hole plug holes of lower layer interlock cloth
It sets so that the counterbore side wall of the push rod has gas outlet on 360 ° of circumference；
The push rod and be located at the top dome lower peripheral surface and the upper box cover between counterbore side wall on open up it is useful
In the air inlet into purge gas；
The outer end of the air induction hose with pressure gas source device for being connected to, and the air induction hose is from the left rubber stopper
It passes through and penetrates the left support arm and enter in the inner chambers of the top dome, on the inner end of the air induction hose and the push rod
Air inlet seal connection.
Preferably, the primary seal circle be solid sealing ring, and the sealing surface of the primary seal circle be for the ball
Push up the spherical surface to fit.
This application provides a kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system, including valve body, gasket,
Top plate and rotation cylinder further include top dome, primary seal circle, air bladder lifting device and support frame；In close stance
The top dome is moved upwards by air bladder lifting device air inlet drive and is moved downward by spring reset drive, and is in
The top dome of close stance is driven by the air bladder lifting device air inlet and moves upwards the upper ball for finally realizing the top dome
The sealing surface of face and the primary seal circle is tightly connected；To change what existing expandable seal circle inflation was sealed
Sealing principle, since the stroke of the push rod in air bladder lifting device is unrestricted, what can be done is bigger, such as 5mm~
It is defeated can be far longer than air-transport system institute so that the gap between primary seal circle and top dome can be bigger by 20mm
The partial size upper limit of the material particles sent so that the material particles left in dome valve will not be stuck in primary seal circle and top dome it
Between gap at, can along the upper spherical surface of top dome fall into lower section pressurized tank in.To sum up, this application provides a kind of dome valve,
By changing the sealing principle of dome valve, allow what the gap between primary seal circle and top dome did to be far longer than pneumatic conveying
The partial size upper limit for the material particles that system is conveyed, so that the material particles left in dome valve will not be stuck in primary seal circle and ball
At gap between top, to be solved from the external cause this aspect for causing existing expandable seal circle to wear close in dome valve
Seal is easy the problem of being worn, and improves the service life of sealing ring in dome valve.
Detailed description of the invention
Fig. 1 is a kind of knot for dome valve for ultra dense phase Ultra-Low Speed air-transport system that embodiments herein provides
Structure schematic diagram (the dome valve that Fig. 1 is the push rod in the air bladder lifting device in the dome valve when being limit contract state
Structural schematic diagram)；
Fig. 2 is the enlarged diagram of the a-quadrant in Fig. 1.
In figure: 1 valve body, 2 gaskets, 3 top plates, 4 top domes, 5 primary seal circles, 6 air bladder lifting devices, 601 opening box,
602 upper box covers, 603 air bladder pieces, 604 thrust discs, 605 push rods, 606 springs, 607 pneumatic hoses, 7 lower support rings, 8 left cunnings
Dynamic bearing, 801 left sliding shaft sleeves, 802 left rotary shafts, 9 left branch legs, 901 left support arms, 902 left casings, 10 support plates, 11 left rubbers
Rubber plug, 12 air guide lids, 13 air induction hoses, 14 plugs, 15 rectangular through-holes.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " axial direction ", " radial direction ", " longitudinal direction ", " transverse direction ",
" length ", " width ", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outside", " clockwise ", " inverse
The orientation or positional relationship of the instructions such as hour hands " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description originally
Invention and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific side
Position construction and operation, therefore be not considered as limiting the invention.
It is a kind of for ultra dense phase Ultra-Low Speed air-transport system that referring to Fig.1-2, Fig. 1 is that embodiments herein provides
(Fig. 1 is that the push rod in the air bladder lifting device in the dome valve is limit contract state to the structural schematic diagram of dome valve
When dome valve structural schematic diagram)；Fig. 2 is the enlarged diagram of the a-quadrant in Fig. 1.
Dome valve in the prior art into expandable seal circle by inflating, so that expandable seal circle expands and then will
The gap of 0.3~0.5mm between expandable seal circle and top dome is to sealing, due to needing to inflate, expandable seal circle
Cavity must be included；Due to needing to expand, so cannot be too hard, it can not be too thick, so expandable seal circle must be a kind of
Thin-wall construction；So the sealing principle of expandable seal circle determines that it can only be a kind of thin-walled hollow structure.
Since expandable seal circle is that the dilatancy of itself is leaned on to remove seal clearance, have one in view of elastic material good again
The fixed expansion upper limit, it is impossible to be expanded without limitation, there are a most reasonable degrees of expansion sections, therefore expandable seal circle exists
Gap when unaerated state between top dome cannot be too big, is generally only 0.3~0.5mm, this one small gap, it is clear that
Ground is easy to block the material particles that a large amount of air-transport systems are conveyed.
To sum up, the same similar to the inner tube of a tyre of bicycle since expandable seal circle itself is a kind of thin-walled hollow structure, hold
It is easily punctured by external force, inherently belongs to vulnerable part, this is the internal cause that expandable seal circle is prone to wear in the prior art；Again due to
Gap very little between expandable seal circle and top dome is easy to block a large amount of material particles, the presence meeting of a large amount of material particles
Expandable seal circle is seriously worn, this is the external cause that expandable seal circle is prone to wear in the prior art.
This application provides a kind of dome valves for ultra dense phase Ultra-Low Speed air-transport system, including valve body 1, gasket
2, top plate 3 and rotation cylinder further include top dome 4, for the primary seal circle 5, pneumatic thin with the top dome 4 connection in sealing contact
Film lifting device 6 and the support frame for being used to support the air bladder lifting device 6；
The primary seal circle 5 is removably attached on the top plate 3 by lower support ring 7；
Support frame as described above includes left branch leg 9, right supporting leg and support plate 10, and the right supporting leg passes through right sliding bearing and institute
The power output end transmission connection of the piston rod of rotation cylinder is stated, the left branch leg 9 is fixed on the valve by left sliding bearing 8
On body 1, the left sliding bearing 8 includes left sliding shaft sleeve 801 and left rotary shaft 802, and the left branch leg 9 includes left support arm
901 and the left casing 902 for being connect with 802 pin shaft of left rotary shaft, the right supporting leg include right support arm and be used for
The right casing being connect with the right spindle pin shaft of the right sliding bearing；
The left support arm 901, support plate 10 and right support arm composition reverse U shape structure, and the support plate 10
Plane of the plate face perpendicular to the longitudinal center line of the left support arm 901 and the longitudinal center line of right support arm where common,
And the plate face of the support plate 10 is parallel to the longitudinal center line of the left rotary shaft 802 of the left sliding bearing 8；
The air bladder lifting device 6 include opening box 601, upper box cover 602, air bladder piece 603, thrust disc 604,
Push rod 605, spring 606 and pneumatic hose 607；
The opening box 601 is weldingly fixed in the mounting hole opened up in the support plate 10, and the upper ball of the top dome 4
Vertically center line offers the first internal thread through hole on face, and the exposed portion of the push rod 605 passes through raw material band and described first
Internal thread through hole sealing is threadedly coupled, and the top dome 4 is connected through a screw thread in the exposed portion for being fixed on the push rod 605, described
Blow vent is offered in the lower cassette bottom of opening box 601；
Offer left plug hole on the valve body 1, the left plug hole is located at the top of the left sliding bearing 8 and described
The longitudinal center line of the left rotary shaft 802 of the longitudinal center line of left plug hole and the left sliding bearing 8 is located at the same vertical plane
It is interior and be parallel to each other；
Left rubber stopper 11 is provided in the left plug hole；
The pneumatic hose 607, which passes through from the left rubber stopper 11 and penetrates the left support arm 901, enters the ball
In the inner chambers on top 4, the inner end of the pneumatic hose 607 is connected to the vents seal；
The exposed parts of the left rubber stopper 11 are whole to be wrapped up by sealant to seal；
The top dome 4 in close stance is moved upwards and by 6 air inlet of air bladder lifting device drive by spring
606 reset straps are dynamic to be moved downward, and the top dome 4 in close stance is by 6 air inlet of the air bladder lifting device band trend
The upper sealing surface for moving the upper spherical surface and the primary seal circle 5 of finally realizing the top dome 4 is tightly connected, and in the top dome 4
Push rod 605 during rotation in the air bladder lifting device 6 remains limit contract state, and described
The centre of sphere of the upper spherical surface of the top dome 4 is in the axial direction of the left rotary shaft 802 of the left sliding bearing 8 during top dome 4 rotates
On heart line；
The sealing surface of foregoing description primary seal circle 5 and the top dome 4 for being in close stance are moved upwards in the top dome 4
Vertical spacing normalization between upper spherical surface remains a definite value in 5mm~20mm.
In the application, the sealing surface of foregoing description primary seal circle 5 and the institute for being in close stance are moved upwards in the top dome 4
It states the vertical spacing normalization between the upper spherical surface of top dome 4 and remains a definite value in 5mm~20mm, pneumatic conveying can be used
Material, partial size is not too large, if too big, strength just convey it is motionless, usually in 200 mesh~400 mesh, therefore 5mm~
The gap of 20mm has been far longer than the partial size upper limit for the material particles that air-transport system is conveyed, so that leaving in dome valve
Material particles will not be stuck at the gap between primary seal circle 5 and top dome 4, to lead to existing expandable seal circle from above-mentioned
External cause this aspect of abrasion solves the problems, such as that the sealing ring in dome valve is easy to be worn, and improves sealing ring in dome valve
Service life.The gap of 5mm~20mm is sufficiently large for dome valve, then greatly, will lead to entire dome valve
Volume is excessive, is unfavorable for using and install.
In the application, including opening box 601, upper box cover 602, air bladder piece 603, thrust disc 604, push rod 605, spring
606 and the air bladder lifting device 6 of pneumatic hose 607 be the prior art, such as be widely used in pneumatic diaphragm control valve
In air bladder elevating mechanism, pneumatic diaphragm control valve by air bladder elevating mechanism band movable valve plug do oscilaltion campaign
Realize that valve is opened to close with valve, thus the application to the type of air bladder lifting device 6 herein and structure with no restrictions, also do not do
It repeats.
In one embodiment of the application, above-mentioned dome valve further includes jet blow device；
The jet blow device includes air guide lid 12 and air induction hose 13；
The air guide lid 12 is smaller part thin spherical shell shape, and the centre of sphere of the air guide lid 12 is overlapped with the centre of sphere of the top dome 4,
Vertically center line offers the second internal thread through hole on the upper spherical surface of the air guide lid 12；
The exposed portion of the push rod 605 is threadedly coupled with second internal thread through hole, the air guide lid 12 and the ball
Top 4 is connected through a screw thread in the exposed portion for being sequentially fixed at the push rod 605 from top to bottom, the lower peripheral surface of the air guide lid 12 with
There are gaps between the upper spherical surface of the top dome 4 to be used to form jet channel, the upper surface of the push rod 605 and the air guide
The upper spherical surface of lid 12 is concordant；
The shell thickness of the air guide lid 12 is 1mm, and the radial width of the jet channel is 2mm；
Longitudinal center line on the upper surface of the push rod 605 along the push rod 605 offers downwards counterbore, the push rod
It is closed with plug 14 in the upper aperture of counterbore in 605；
Rectangular through-hole 15 there are six being opened up on the counterbore side wall of the push rod 605 being located in jet channel, each rectangle
The outward opening length of through-hole 15 is equal to the 1/6 of the outer diameter of the push rod 605, and six rectangular through-holes 15 are divided for upper layer and lower layer, wherein
Three rectangular through-holes 15 are located at upper layer, and remaining three rectangular through-holes 15 are located at lower layer, and three rectangular through-holes 15 on upper layer are circumferentially
360 ° are uniformly distributed, and three rectangular through-holes 15 of lower layer are circumferentially uniformly distributed for 360 °, and three rectangular through-holes 15 on upper layer are under
Three rectangular through-holes, the 15 plug hole interlaced arrangement of layer is so that the counterbore side wall of the push rod 605 has outlet on 360 ° of circumference
Mouthful；
The push rod 605 and be located at the top dome 4 lower peripheral surface and the upper box cover 602 between counterbore side wall on open
Equipped with for the air inlet into purge gas；
The outer end of the air induction hose 13 with pressure gas source device for being connected to, and the air induction hose 13 is from the left rubber
It is passed through in plug 11 and penetrates the left support arm 901 and entered in the inner chambers of the top dome 4, the inner end of the air induction hose 13
It is connected to the air inlet sealing on the push rod 605.
Had in the prior art in dome valve be arranged jet blow device to the material particles being lost in top dome 4 into
The precedent that row purging is removed, wherein the position of jet blow device setting is also various, still, in view of jet blow device
Purging itself is exactly the material particles on the upper spherical surface of top dome 4, and only purge gas is sprayed close to the upper spherical surface of top dome 4
It blows, could purge most clean, most efficiently, and the setting of jet blow device turn jet blow device also can
Dynamic, when dome valve, which is opened, to be fed, jet blow device can be hidden between top dome 4 and valve body 1, first is that not interfering material
The normal circulation of stream, ensure that the circulation area of material stream, second is that jet blow device is protected not washed away seriously by material stream
Abrasion ensure that its service life, and three are a simplified the structure of entire dome valve, and processing is convenient with maintenance, therefore, will spray
The position design of air-blowing sweeping device is most reasonable to be mounted in top dome 4.
It is contemplated that the gap between expandable seal circle and top dome 4 usually only has 0.3~0.5mm in the prior art,
This one small gap cannot be arranged convex as jet blow device so that the upper surface of top dome 4 can only be round and smooth spherical surface
The projection of spherical surface out, otherwise jet blow device can be easy to collide expandable seal during rotating with top dome 4
Circle interferes the normal rotation of top dome 4.But this application provides a kind of dome valves, change the sealing of the sealing ring of dome valve
Principle is made the gap between primary seal circle 5 and top dome 4 greatly, and maximum can accomplish 20mm, and minimum can also accomplish
5mm, as long as so that the volume size design of jet blow device is reasonable, so that jet is blown during top dome 4 rotates
Primary seal circle 5 will not be collided by having gap between sweeping device and primary seal circle 5, so that it may which jet blow device is arranged in top dome
On 4.
To sum up, this application provides a kind of dome valves, and by the way that jet blow device is arranged in top dome 4, control jet is blown
The jet direction of the spout of sweeping device efficiently purges the material particles for being retained in top dome 4 along the upper spherical surface of top dome 4,
It avoids at the gap that material particles are stuck between top dome 4 and primary seal circle 5, avoids material particles to the mill of primary seal circle 5
Damage is easy to solve the sealing ring in dome valve from above-mentioned external cause this aspect for causing existing expandable seal circle to wear
The problem of being worn improves the service life of the sealing ring in dome valve.
In view of pneumatic hose 607 and air induction hose 13 will be rotated together with top dome 4, for avoid pneumatic hose 607 with
And air induction hose 13 bends rupture in the course of rotation, it is preferred that pneumatic hose 607 and air induction hose 13 are using high pressure resistant
Plastic flexible pipe；And further, corresponding a certain section or a few sections in dome valve of pneumatic hose 607 and air induction hose 13
Should do it is spiral, similar to that helix of telephone wire, to facilitate pneumatic hose 607 and air induction hose 13 to follow top dome
4 rotate together, and are simplification view, in Fig. 1 by dome valve pneumatic hose 607 and air induction hose 13 be drawn as mostly it is straight
Line trend, but this is intended merely to facilitate picture, and in actual production dome valve, technical staff can be in order to facilitate pneumatic hose 607
And air induction hose 13 follows top dome 4 to rotate together and pneumatic hose 607 and air induction hose 13 are arranged to reasonable shape
And the reasonable cloth canal path of selection, it does not draw and has no effect on its physical presence；Air induction hose 13 enters the inside of the top dome 4
After in cavity, it is preferred that be close to above-mentioned top dome 4 Internal Spherical Surface laying, wash away air induction hose 13 to avoid material particles, protect into
Gas hose 13.
In the application, the right supporting leg is passed by the power output end of right sliding bearing and the piston rod of the rotation cylinder
Dynamic connection, the left branch leg 9 are fixed on the valve body 1 by left sliding bearing 8, and the left sliding bearing 8 includes left sliding
Axle sleeve 801 and left rotary shaft 802, junction, left sliding shaft sleeve 801 and left rotary shaft between left sliding shaft sleeve 801 and valve body 1
Junction, right sliding shaft sleeve between 802 and the junction between valve body 1 and the connection between right sliding shaft sleeve and right spindle
Place should all seal, and to prevent pressurized tank gas leakage, but the prior art is sealed at this, the application is specific to sealing structure herein
Structure with no restrictions, also repeats no more, and is simplification view, does not draw between left sliding shaft sleeve 801 and valve body 1 in Fig. 1
Junction, right sliding shaft sleeve between junction, left sliding shaft sleeve 801 and left rotary shaft 802 and the junction between valve body 1 and
The sealing element of junction between right sliding shaft sleeve and right spindle, but do not draw and have no effect on its physical presence.
In one embodiment of the application, the primary seal circle 5 is solid sealing ring；Connect it is above-mentioned, it is existing may expand it is close
The sealing principle of seal determines a kind of its necessarily thin-walled hollow structure, is a kind of vulnerable part, inherently exists and is easy to be ground
The internal cause of damage, then this application provides a kind of dome valves, change the sealing principle of the sealing ring of dome valve, it is no longer necessary to circle
Sealing ring in overhead-valve expands deformation, therefore, the primary seal circle 5 in the application can be made it is solid, be similar in order to
Solve the problems, such as that air core tyre is easy to be punctured in actual life, has devised solid tyre, it should be apparent that, solid sealing ring
There is no gas leakage is worn, service life can be greatly prolonged, to cause existing expandable seal circle to wear from above-mentioned
Internal cause this aspect solve the problems, such as that the sealing ring in dome valve is easy to be worn, improve making for sealing ring in dome valve
Use the service life.
In this application, the bottom surface of the primary seal circle 5 is the spherical surface for fitting with the top dome 4；Mainly
The laminating degree of primary seal circle 5 and top dome 4 is improved, the leakproofness of primary seal circle 5 is improved.
This application provides a kind of dome valves, and the course of work is substantially are as follows: when dome valve needs to open, first described in control
The push rod 605 of air bladder lifting device 6, which bounces back, to be withdrawn, and top dome 4 is driven to move downward, so that top dome 4 and primary seal circle 5 is close
Gap between cover is increasing, until the push rod 605 of air bladder lifting device 6 is punctured into limit contract state, so
Top dome 4 turns to open position by close stance under the drive of rotation cylinder afterwards；
When dome valve needs to close, top dome 4 turns to close stance by open position under the drive of rotation cylinder first, so
The air inlet gas supply by air induction hose 13 on push rod 605, gas are sprayed by the rectangular through-hole 15 on push rod 605 to top dome afterwards
Material particles on 4 upper spherical surface carry out purging removing, and purging after a certain period of time, is closed air induction hose 13 and supplied, then control
The push rod 605 of air bladder lifting device 6 is protruding, and top dome 4 is driven to move upwards, so that top dome 4 and primary seal circle 5 is close
Gap between cover is smaller and smaller, until the sealing surface of the upper spherical surface of the top dome 4 and the primary seal circle 5 is tightly connected.
The method and apparatus of the not detailed description of the present invention are the prior art, are repeated no more.
Principle and implementation of the present invention are described for specific embodiment used herein, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention.It should be pointed out that for the common skill of the art
, without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention for art personnel, these change
It is also fallen within the protection scope of the claims of the present invention into modification.
Claims (3)
1. a kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system, including valve body, gasket, top plate and rotation gas
Cylinder, which is characterized in that further include top dome, the primary seal circle for top dome connection in sealing contact, air bladder lifting dress
Set and be used to support the support frame of the air bladder lifting device；
The primary seal circle is removably attached on the top plate by lower support ring；
Support frame as described above includes left branch leg, right supporting leg and support plate, and the right supporting leg passes through right sliding bearing and the rotation
The power output end of the piston rod of cylinder is sequentially connected, and the left branch leg is fixed on the valve body by left sliding bearing, institute
Stating left sliding bearing includes left sliding shaft sleeve and left rotary shaft, and the left branch leg includes left support arm and is used for and the left-hand rotation
The left casing of pivot pin axis connection, the right supporting leg include right support arm and for the right spindle pin shaft with the right sliding bearing
The right casing of connection；
The left support arm, support plate and right support arm constitute reverse U shape structure, and the plate face of the support plate is perpendicular to institute
Plane where the longitudinal center line of the longitudinal center line and right support arm of stating left support arm is common, and the plate of the support plate
Face is parallel to the longitudinal center line of the left rotary shaft of the left sliding bearing；
The air bladder lifting device includes opening box, upper box cover, air bladder piece, thrust disc, push rod, spring and pneumatic
Hose；
The opening box is weldingly fixed in the mounting hole opened up in the support plate, and perpendicular along it on the upper spherical surface of the top dome
The first internal thread through hole is offered to center line, the exposed portion of the push rod is close by raw material band and first internal thread through hole
Envelope is threadedly coupled, and the top dome is connected through a screw thread in the exposed portion for being fixed on the push rod, in the lower cassette bottom of the opening box
Offer blow vent；
Left plug hole is offered on the valve body, the left plug hole is located at the top of the left sliding bearing and the left plug
The longitudinal center line of the left rotary shaft of the longitudinal center line in hole and the left sliding bearing is located in the same vertical plane and mutually puts down
Row；
Left rubber stopper is provided in the left plug hole；
The pneumatic hose passes through from the left rubber stopper and penetrates the inner chambers that the left support arm enters the top dome
In, the inner end of the pneumatic hose is connected to the vents seal；
The exposed parts of the left rubber stopper are whole to be wrapped up by sealant to seal；
The top dome in close stance is moved upwards and by air bladder lifting device air inlet drive by spring reset band
It is dynamic to move downward, and the top dome in close stance moves upwards final reality by air bladder lifting device air inlet drive
The upper spherical surface of the existing top dome and the sealing surface of the primary seal circle are tightly connected, and described during top dome rotation
Push rod in air bladder lifting device remains limit contract state, and described during top dome rotation
The centre of sphere of the upper spherical surface of top dome is on the longitudinal center line of the left rotary shaft of the left sliding bearing；
The sealing surface and the upper spherical surface of the top dome in close stance of foregoing description primary seal circle are moved upwards in the top dome
Between vertical spacing normalization remain a definite value in 5mm~20mm.
2. dome valve according to claim 1, which is characterized in that further include jet blow device；
The jet blow device includes air guide lid and air induction hose；
The air guide lid is smaller part thin spherical shell shape, and the centre of sphere of the air guide lid is overlapped with the centre of sphere of the top dome, the air guide
The second internal thread through hole is offered along its vertical centerline on the upper spherical surface of lid；
The exposed portion of the push rod is threadedly coupled with second internal thread through hole, and the air guide lid and the top dome pass through screw thread
Connection is sequentially fixed at from top to bottom in the exposed portion of the push rod, the lower peripheral surface of the air guide lid and the upper spherical surface of the top dome
Between there are gaps to be used to form jet channel, the upper surface of the push rod is concordant with the upper spherical surface of the air guide lid；
The shell thickness of the air guide lid is 1mm, and the radial width of the jet channel is 2mm；
Longitudinal center line on the upper surface of the push rod along the push rod offers downwards counterbore, the counterbore in the push rod
It is closed with plug in upper aperture；
Rectangular through-hole there are six being opened up on the counterbore side wall of the push rod being located in jet channel, the external-open of each rectangular through-hole
Mouth length is equal to the 1/6 of the outer diameter of the push rod, and six rectangular through-holes are divided into upper layer and lower layer, wherein three rectangular through-holes are positioned at upper
Layer, remaining three rectangular through-holes are located at lower layer, and three rectangular through-holes on upper layer are circumferentially uniformly distributed for 360 °, three squares of lower layer
Shape through-hole is circumferentially uniformly distributed for 360 °, three rectangular through-hole plug hole interlaced arrangements of three rectangular through-holes on upper layer and lower layer with
So that the counterbore side wall of the push rod has gas outlet on 360 ° of circumference；
The push rod and be located at the top dome lower peripheral surface and the upper box cover between counterbore side wall on offer for into
The air inlet of purge gas；
For being connected to pressure gas source device, the air induction hose is passed through from the left rubber stopper for the outer end of the air induction hose
And penetrate the left support arm into the inner chambers of the top dome, on the inner end of the air induction hose and the push rod into
Port sealing connection.
3. dome valve according to claim 2, which is characterized in that the primary seal circle is solid sealing ring, and the master
The sealing surface of sealing ring is the spherical surface for fitting with the top dome.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710926565.6A CN107477204B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710926565.6A CN107477204B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107477204A CN107477204A (en) | 2017-12-15 |
| CN107477204B true CN107477204B (en) | 2019-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710926565.6A Active CN107477204B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve for ultra dense phase Ultra-Low Speed air-transport system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506515B (en) * | 2018-06-19 | 2020-06-26 | 上海亚核阀业成套有限公司 | Ball valve with spiral guide rail |
| CN113565987B (en) * | 2021-07-27 | 2023-05-12 | 凯瑞特阀业集团有限公司 | Ball valve special for ammonia gas |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013951Y (en) * | 2007-03-27 | 2008-01-30 | 铜川市兰德尔环保科技有限公司 | Synchronous pneumatic power dome valve |
| CN201129498Y (en) * | 2007-12-27 | 2008-10-08 | 李巍 | Circular top valve |
| GB2539268A (en) * | 2015-06-12 | 2016-12-14 | Heap & Partners Ltd | Method of assembling a ball valve housing |
| CN205877258U (en) * | 2016-07-28 | 2017-01-11 | 安徽耐力德气力输送有限公司 | Dome valve |
| CN106996464A (en) * | 2017-06-01 | 2017-08-01 | 浙江固特气动科技股份有限公司 | For the dome valve in air-transport system and dome valve automatic control system |
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2017
- 2017-10-07 CN CN201710926565.6A patent/CN107477204B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201013951Y (en) * | 2007-03-27 | 2008-01-30 | 铜川市兰德尔环保科技有限公司 | Synchronous pneumatic power dome valve |
| CN201129498Y (en) * | 2007-12-27 | 2008-10-08 | 李巍 | Circular top valve |
| GB2539268A (en) * | 2015-06-12 | 2016-12-14 | Heap & Partners Ltd | Method of assembling a ball valve housing |
| CN205877258U (en) * | 2016-07-28 | 2017-01-11 | 安徽耐力德气力输送有限公司 | Dome valve |
| CN106996464A (en) * | 2017-06-01 | 2017-08-01 | 浙江固特气动科技股份有限公司 | For the dome valve in air-transport system and dome valve automatic control system |
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| Publication number | Publication date |
|---|---|
| CN107477204A (en) | 2017-12-15 |
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