CN107725816B - A kind of dome valve - Google Patents
A kind of dome valve Download PDFInfo
- Publication number
- CN107725816B CN107725816B CN201710926594.2A CN201710926594A CN107725816B CN 107725816 B CN107725816 B CN 107725816B CN 201710926594 A CN201710926594 A CN 201710926594A CN 107725816 B CN107725816 B CN 107725816B
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- China
- Prior art keywords
- dome
- top dome
- cylinder
- hole
- seal circle
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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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
- F16K5/0647—Spindles or actuating means
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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 discloses a kind of dome valves, including valve body, gasket, top plate and rotation cylinder, further include top dome and primary seal circle；And the top dome in close stance pushes the sealing surface for moving upwards the final upper spherical surface for realizing top dome and primary seal circle to be tightly connected by the left piston bar of left cylinder and the right piston bar of right cylinder；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, more particularly, to a kind of 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 to reduce by improving the structure of dome valve and even avoid material
Particle is stuck at the gap between top dome and sealing ring, is reduced and is even avoided abrasion of the material particles to sealing ring, and sealing is improved
The service life of circle.
In order to solve the above technical problems, technical solution provided by the invention are as follows:
A kind of dome valve, including valve body, gasket, top plate and rotation cylinder, further include top dome and for it is described
The primary seal circle of top dome connection in sealing contact；
The primary seal circle is removably attached on the top plate by lower support ring；
The top dome is supported by left branch leg and right supporting leg, and the right supporting leg passes through right sliding bearing and the rotation cylinder
Piston rod power output end transmission connection, the left branch leg is fixed on the valve body by left sliding bearing, the left side
Sliding bearing includes left sliding shaft sleeve and left rotary shaft, and the left branch leg includes left cylinder and is used for and the left rotary shaft pin shaft
The left casing of connection, the right supporting leg includes right cylinder and the right side for connecting with the right spindle pin shaft of the right sliding bearing
Casing；
The left cylinder and right cylinder are single pole double-acting piston cylinder；
The left piston bar of the left cylinder is fixedly connected with the top dome and the right piston bar of the right cylinder and the ball
Top is fixedly connected to support the top dome, the shell lower end of the left cylinder and the left casing to realize fixed connect by welding
It connects, the shell lower end of the right cylinder is achieved a fixed connection with the right casing by welding；
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；
Right plug hole is offered on the valve body, the right plug hole is located at the top of the right sliding bearing and the right side
The longitudinal center line of the longitudinal center line of plug hole and the right spindle of the right sliding bearing is located in the same vertical plane and phase
It is mutually parallel；
It is provided with left rubber stopper in the left plug hole, is provided with right rubber stopper in the right plug hole；
Two left pneumatic hoses connecting with the left cylinder are passed into the dome valve from the left rubber stopper
Inside, and two right pneumatic hoses connecting with the right cylinder are passed into the dome valve from the right rubber stopper
Portion；
The exposed parts of the left rubber stopper are whole to be wrapped up by sealant to seal, and the exposed parts of the right rubber stopper
It is whole to be wrapped up by sealant；
The top dome in close stance is by the left piston bar of the left cylinder and the right piston bar band of the right cylinder
It is dynamic to carry out up-and-down reciprocating movement, and the top dome in close stance is by the left piston bar and the right gas of the left cylinder
The right piston bar of cylinder pushes the sealing surface sealing for moving upwards the upper spherical surface for finally realizing the top dome and the primary seal circle to connect
It connects, and the left piston bar of the left cylinder and the right piston bar of the right cylinder are protected always during top dome rotation
Hold as limit contract state, and during top dome rotation the upper spherical surface of the top dome the centre of sphere in the left sliding
On the longitudinal center line of the left rotary shaft of 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, male-pipe 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 first internal thread through hole is offered along its vertical centerline on the upper spherical surface of air guide lid；
The second internal thread through hole is offered along its vertical centerline on the upper spherical surface of the top dome；
The air guide lid is detachable by the male-pipe for being screwed into the first internal thread through hole and the second internal thread through hole
Ground is fixed in the top dome, and there are gaps between the lower peripheral surface of the air guide lid and the upper spherical surface of the top dome to be used to form
Jet channel, the male-pipe and second internal thread through hole by raw material band sealed connection, the male-pipe it is upper
Nozzle is closed with plug, and the upper orifice of the male-pipe 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；
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 is passed into the inner chambers of the top dome, the lower nozzle of the inner end of the air induction hose and the male-pipe, which seals, to be connected
It is logical；
It is opened up on the tube wall of the male-pipe 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 male-pipe, and six rectangular through-holes are divided into upper layer and lower layer, wherein three rectangles are logical
Hole is located at upper layer, and remaining three rectangular through-holes are located at lower layer, and three rectangular through-holes on upper layer are circumferentially uniformly distributed for 360 °, lower layer
Three rectangular through-holes be circumferentially uniformly distributed for 360 °, three rectangular through-hole plug holes of three rectangular through-holes on upper layer and lower layer are handed over
The tube wall that mistake is arranged so that the male-pipe has gas outlet on 360 ° of circumference.
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, including valve body, gasket, top plate and rotation cylinder, further include top dome with
And for the primary seal circle with top dome connection in sealing contact；The top dome in close stance by the left cylinder left work
Stopper rod and the right piston bar of the right cylinder, which drive, carries out up-and-down reciprocating movement；And the top dome in close stance is by institute
The right piston bar promotion of the left piston bar and the right cylinder of stating left cylinder 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 right piston bar of the left piston bar and right cylinder of left cylinder is unrestricted, the comparison that can be done
Greatly, such as 5mm~20mm is so that the gap between primary seal circle and top dome can be bigger can be far longer than strength
The partial size upper limit for the material particles that transportation system is conveyed so that the material particles left in dome valve will not be stuck in master it is close
At gap between seal and top dome, it can be fallen into along the upper spherical surface of top dome in the pressurized tank of lower section.To sum up, this application provides
A kind of dome valve does the gap between primary seal circle and top dome much by changing the sealing principle of dome valve
Greater than the partial size upper limit for the material particles that air-transport system is conveyed, so that the material particles left in dome valve will not be stuck in
At gap between primary seal circle and top dome, to be solved from the external cause this aspect for causing existing expandable seal circle to wear
Sealing ring in dome valve 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 that (Fig. 1 is the left gas in the dome valve for the structural schematic diagram of dome valve that embodiments herein provides a kind of
The structural schematic diagram of dome valve when the left piston bar of cylinder and the right piston bar of right cylinder are limit contract state)；
Fig. 2 is the enlarged diagram of the B area in Fig. 1.
In figure: 1 valve body, 2 gaskets, 3 top plates, 4 top domes, 5 primary seal circles, 6 lower support rings, 7 left sliding bearings, 701 is left
Sliding shaft sleeve, 702 left rotary shafts, 8 left cylinders, 801 left piston bars, 9 right cylinders, 901 right piston bars, 10 left rubber stoppers, 11 right rubbers
Rubber plug, 12 left pneumatic hoses, 13 right pneumatic hoses, 14 air guide lids, 15 male-pipes, 16 air induction hoses, 17 plugs, 18 rectangles are logical
Hole, 19 left casings.
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.
Referring to Fig.1-2, Fig. 1 is that (Fig. 1 is the dome for the structural schematic diagram of dome valve that embodiments herein provides a kind of
The structure of dome valve when the left piston bar of left cylinder in valve and the right piston bar of right cylinder are limit contract state is shown
It is intended to)；Fig. 2 is the enlarged diagram of the B area 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, including valve body 1, gasket 2, top plate 3 and rotation cylinder, further include top dome
4 and for the primary seal circle 5 with the top dome 4 connection in sealing contact；
The primary seal circle 5 is removably attached on the top plate 3 by lower support ring 6；
The top dome 4 is supported by left branch leg and right supporting leg, and the right supporting leg passes through right sliding bearing and the rotation gas
The power output end of the piston rod of cylinder is sequentially connected, and the left branch leg is fixed on the valve body 1 by left sliding bearing 7, institute
Stating left sliding bearing 7 includes left sliding shaft sleeve 701 and left rotary shaft 702, and the left branch leg includes left cylinder 8 and is used for and institute
State 702 pin shaft of left rotary shaft connection left casing 19, the right supporting leg include right cylinder 9 and for the right sliding bearing
The right casing of right spindle pin shaft connection；
The left cylinder 8 and right cylinder 9 are single pole double-acting piston cylinder；
The left piston bar 801 of the left cylinder 8 is fixedly connected with the top dome 4 and the right piston bar 901 of the right cylinder 9
It is fixedly connected with the top dome 4 to support the top dome 4, the shell lower end of the left cylinder 8 and the left casing 19 pass through weldering
It connects and achieves a fixed connection, the shell lower end of the right cylinder 9 is achieved a fixed connection with the right casing by welding；
Offer left plug hole on the valve body 1, the left plug hole is located at the top of the left sliding bearing 7 and described
The longitudinal center line of the left rotary shaft 702 of the longitudinal center line of left plug hole and the left sliding bearing 7 is located at the same vertical plane
It is interior and be parallel to each other；
Offer right plug hole on the valve body 1, the right plug hole is located at the top of the right sliding bearing and described
The longitudinal center line of the right spindle of the longitudinal center line of right plug hole and the right sliding bearing be located at the same vertical plane it is interior and
It is parallel to each other；
It is provided with left rubber stopper 10 in the left plug hole, right rubber stopper 11 is provided in the right plug hole；
Two left pneumatic hoses 12 connecting with the left cylinder 8 are passed into the dome from the left rubber stopper 10
The inside of valve, and two right pneumatic hoses 13 being connect with the right cylinder 9 be passed into from the right rubber stopper 11 it is described
The inside of dome valve；
The exposed parts of the left rubber stopper 10 are whole to be wrapped up by sealant to seal, and the right rubber stopper 11 is exposed
Part is whole to be wrapped up by sealant；
The top dome 4 in close stance is by the left piston bar 801 of the left cylinder 8 and the right work of the right cylinder 9
Stopper rod 901, which drives, carries out up-and-down reciprocating movement, and the top dome 4 in close stance is by the left piston bar of the left cylinder 8
801 and the right cylinder 9 right piston bar 901 push move upwards finally realize the top dome 4 upper spherical surface and the master
The sealing surface of sealing ring 5 is tightly connected, and during the top dome 4 rotation the left piston bar 801 of the left cylinder 8 and
The right piston bar 901 of the right cylinder 9 remains limit contract state, and rotates during institute in the top dome 4
The centre of sphere of the upper spherical surface of top dome 4 is stated on the longitudinal center line of the left rotary shaft 702 of the left sliding bearing 7；
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
The product of body 1 is excessive, is unfavorable for using and install.
In one embodiment of the application, above-mentioned dome valve further includes jet blow device；
The jet blow device includes air guide lid 14, male-pipe 15 and air induction hose 16；
The air guide lid 14 is smaller part thin spherical shell shape, and the centre of sphere of the air guide lid 14 is overlapped with the centre of sphere of the top dome 4,
The first internal thread through hole is offered along its vertical centerline on the upper spherical surface of the air guide lid 14；
The second internal thread through hole is offered along its vertical centerline on the upper spherical surface of the top dome 4；
The air guide lid 14 can by being screwed into the male-pipe 15 of the first internal thread through hole and the second internal thread through hole
Be removedly fixed in the top dome 4, between the lower peripheral surface of the air guide lid 14 and the upper spherical surface of the top dome 4 there are gap with
It is used to form jet channel, the male-pipe 15 is tightly connected with second internal thread through hole by raw material band, described outer
The upper orifice of screwed pipe 15 is closed with plug 17, and the upper spherical surface of the upper orifice of the male-pipe 15 and the air guide lid 14 is flat
Together；
The shell thickness of the air guide lid 14 is 1mm, and the radial width of the jet channel is 2mm；
The outer end of the air induction hose 16 with pressure gas source device for being connected to, and the air induction hose 16 is from the left rubber
It is passed into the inner chambers of the top dome 4 in plug 10, under the inner end of the air induction hose 16 and the male-pipe 15
Ferrule connection；
It is opened up on the tube wall of the male-pipe 15 being located in jet channel there are six rectangular through-hole 18, each rectangle is logical
The outward opening length in hole 18 is equal to the 1/6 of the outer diameter of the male-pipe 15, and six rectangular through-holes 18 are divided for upper layer and lower layer, wherein
Three rectangular through-holes 18 are located at upper layer, and remaining three rectangular through-holes 18 are located at lower layer, and three rectangular through-holes 18 on upper layer are circumferentially
360 ° are uniformly distributed, and three rectangular through-holes 18 of lower layer are circumferentially uniformly distributed for 360 °, and three rectangular through-holes 18 on upper layer are under
Three rectangular through-holes, the 18 plug hole interlaced arrangement of layer is so that the tube wall of the male-pipe 15 has outlet on 360 ° of circumference
Mouthful.
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 opens logical material, 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 being retained in top dome 4 along the upper spherical surface of top dome 4
Fall, avoid at the gap that material particles are stuck between top dome 4 and primary seal circle 5, avoids material particles to primary seal circle 5
Abrasion is held 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 easily worn, improves the service life of the sealing ring in dome valve.
In view of left pneumatic hose, right pneumatic hose and air induction hose 16 will be rotated together with top dome 4, to avoid left gas
Dynamic hose, right pneumatic hose and air induction hose 16 bend rupture in the course of rotation, it is preferred that left pneumatic hose, right gas
Dynamic hose and air induction hose 16 use high pressure resistant plastic flexible pipe；And it is further, left pneumatic hose, right pneumatic hose and into
Corresponding a certain section or a few sections in dome valve of gas hose 16 should do it is spiral, similar to that spiral of telephone wire
Line is simplification view, Fig. 1 to facilitate left pneumatic hose, right pneumatic hose and air induction hose 16 that top dome 4 is followed to rotate together
The middle left pneumatic hose by dome valve, right pneumatic hose and air induction hose 16 have been drawn as straight line trend, but this mostly
To draw for convenience, in actual production dome valve, technical staff can for convenience left pneumatic hose, right pneumatic hose and
Air induction hose 16 follows top dome 4 to rotate together and be arranged to left pneumatic hose, right pneumatic hose and air induction hose 16 rationally
Shape and the reasonable cloth canal path of selection, do not draw and have no effect on its physical presence；Air induction hose 16 enters the top dome 4
Inner chambers in after, it is preferred that be close to above-mentioned top dome 4 Internal Spherical Surface laying, wash away air induction hose 16 to avoid material particles,
Protect air induction hose 16.
The top dome 4 is supported by left branch leg and right supporting leg, and the right supporting leg passes through right sliding bearing and the cylinder
The power output end of piston rod is sequentially connected, and the left branch leg is fixed on the valve body 1 by left sliding bearing 7, the left side
Sliding bearing 7 includes left sliding shaft sleeve 701 and left rotary shaft 702, junction, a left side between left sliding shaft sleeve 701 and valve body 1
Junction, right sliding shaft sleeve between sliding shaft sleeve 701 and left rotary shaft 702 and junction and right sliding axle between valve body 1
Junction between set and right spindle should all seal, and to prevent pressurized tank gas leakage, but the prior art is sealed at this, the application
With no restrictions to the specific structure of sealing structure herein, it also repeats no more, is simplification view, does not draw in Fig. 1 in left sliding
Junction, left sliding shaft sleeve 701 between axle sleeve 701 and valve body 1 and the junction between left rotary shaft 702, right sliding shaft sleeve with
The sealing element of the junction between junction and right sliding shaft sleeve and right spindle between valve body 1, 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 left piston bar 801 of left cylinder 8 and the right piston bar 901 of the right cylinder 9 bounce back and withdraw, and drive top dome 4 to move downward, make
Gap between top dome 4 and the sealing surface of primary seal circle 5 is increasing, until the left piston bar 801 of left cylinder 8 and described
The right piston bar 901 of right cylinder 9 is punctured into limit contract state, and then top dome 4 is under the drive of rotation cylinder by close stance
Turn to open position；
When dome valve needs to close, top dome 4 turns to close stance by open position under the drive of rotation cylinder first, so
It is supplied afterwards by air induction hose 16 to male-pipe 15, gas is sprayed by the rectangular through-hole 18 on male-pipe 15 to top dome 4
Material particles on upper spherical surface carry out purging removing, and purging after a certain period of time, is closed air induction hose 16 and supplied, then described in control
The left piston bar 801 of left cylinder 8 and the right piston bar 901 of the right cylinder 9 are protruding, drive top dome 4 to move upwards, make
The gap obtained between top dome 4 and the sealing surface of primary seal circle 5 is smaller and smaller, until the upper spherical surface of the top dome 4 and the master are close
The sealing surface of seal 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, including valve body, gasket, top plate and rotation cylinder, which is characterized in that further include top dome and use
In the primary seal circle with top dome connection in sealing contact；
The primary seal circle is removably attached on the top plate by lower support ring；
The top dome is supported by left branch leg and right supporting leg, the work that the right supporting leg passes through right sliding bearing and the rotation cylinder
The power output end of stopper rod is sequentially connected, and the left branch leg is fixed on the valve body by left sliding bearing, the left sliding
Bearing includes left sliding shaft sleeve and left rotary shaft, and the left branch leg includes left cylinder and is used to connect with the left rotary shaft pin shaft
Left casing, the right supporting leg includes right cylinder and the right set for connecting with the right spindle pin shaft of the right sliding bearing
Pipe；
The left cylinder and right cylinder are single pole double-acting piston cylinder；
The left piston bar of the left cylinder is fixedly connected with the top dome and the right piston bar of the right cylinder and the top dome are solid
Fixed connection is to support the top dome, and the shell lower end of the left cylinder is achieved a fixed connection with the left casing by welding, institute
The shell lower end for stating right cylinder is achieved a fixed connection with the right casing by welding；
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；
Right plug hole is offered on the valve body, the right plug hole is located at the top of the right sliding bearing and the right plug
The longitudinal center line of the right spindle of the longitudinal center line in hole and the right sliding bearing is located in the same vertical plane and mutually puts down
Row；
It is provided with left rubber stopper in the left plug hole, is provided with right rubber stopper in the right plug hole；
Two left pneumatic hoses connecting with the left cylinder are passed into the inside of the dome valve from the left rubber stopper,
And two right pneumatic hoses connecting with the right cylinder are passed into the inside of the dome valve from the right rubber stopper；
The exposed parts of the left rubber stopper are whole to be wrapped up by sealant to seal, and the exposed parts of the right rubber stopper are whole
It is wrapped up by sealant；
The top dome in close stance by the left piston bar of the left cylinder and the right piston bar of the right cylinder drive into
The movement of row up-and-down reciprocating, and left piston bar and the right cylinder of the top dome in close stance by the left cylinder
Right piston bar pushes the sealing surface for moving upwards the upper spherical surface for finally realizing the top dome and the primary seal circle to be tightly connected, and
The left piston bar of the left cylinder and the right piston bar of the right cylinder remain during top dome rotation
Limit contract state, and during top dome rotation the upper spherical surface of the top dome the centre of sphere in the left sliding bearing
Left rotary shaft longitudinal center line on；
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, male-pipe 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 first internal thread through hole is offered along its vertical centerline on the upper spherical surface of lid；
The second internal thread through hole is offered along its vertical centerline on the upper spherical surface of the top dome；
The air guide lid is removably solid by the male-pipe for being screwed into the first internal thread through hole and the second internal thread through hole
It is scheduled in the top dome, there are gaps between the lower peripheral surface of the air guide lid and the upper spherical surface of the top dome to be used to form jet
Channel, the male-pipe and second internal thread through hole are tightly connected by raw material band, the upper orifice of the male-pipe
It is closed with plug, the upper orifice of the male-pipe 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；
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
Into in the inner chambers of the top dome, the inner end of the air induction hose is connected to the sealing of the lower nozzle of the male-pipe；
Rectangular through-hole there are six being opened up on the tube wall of the male-pipe 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 male-pipe, 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 tube wall of the male-pipe has gas outlet on 360 ° of circumference.
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 |
|---|---|---|---|
| CN201710926594.2A CN107725816B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710926594.2A CN107725816B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107725816A CN107725816A (en) | 2018-02-23 |
| CN107725816B true CN107725816B (en) | 2019-04-09 |
Family
ID=61209812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710926594.2A Active CN107725816B (en) | 2017-10-07 | 2017-10-07 | A kind of dome valve |
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| Country | Link |
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| CN (1) | CN107725816B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762192A (en) * | 2021-01-26 | 2021-05-07 | 常州亚泓环保科技有限公司 | Jacking high-pressure type sealing dome valve |
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 |
-
2017
- 2017-10-07 CN CN201710926594.2A patent/CN107725816B/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 |
|---|---|
| CN107725816A (en) | 2018-02-23 |
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Effective date of registration: 20190311 Address after: 211100 300 Chi Hui Road, Qilin science and Technology Innovation Park, Jiangning District, Nanjing, Jiangsu Applicant after: Nanjing Han Xi Automation Technology Co., Ltd. Address before: Room 502-2, Rongji Building, No. 168 Garden Road, Licheng District, Jinan City, Shandong Province Applicant before: The German Ji'nan Environmental Protection Technology Co. Ltd |
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Effective date of registration: 20200604 Address after: 221000, Jiangsu Province, Copper Mt. District, Xuzhou Zhang Zhen Road, large set of Wei Patentee after: XUZHOU ZHUXIN DUCTILE PIPE MANUFACTURING Co.,Ltd. Address before: 211100 No. 300 Zhihui Road, Qilin Science and Technology Innovation Park, Jiangning District, Nanjing City, Jiangsu Province Patentee before: NANJING HANXIYUE AUTOMATION TECHNOLOGY Co.,Ltd. |
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