CN207364310U - A kind of novel integrated double containment form dome valve - Google Patents
A kind of novel integrated double containment form dome valve Download PDFInfo
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- CN207364310U CN207364310U CN201720849830.0U CN201720849830U CN207364310U CN 207364310 U CN207364310 U CN 207364310U CN 201720849830 U CN201720849830 U CN 201720849830U CN 207364310 U CN207364310 U CN 207364310U
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Abstract
A kind of novel integrated double containment form dome valve, including valve body, spool, valve seat and valve deck, the spool are connected with rotating axis component；Gland one end is connected with the valve deck, and the other end extends downwardly the outer end face of spool when conflict to dome valve is closed after the medial surface of the valve deck forms confined planes, forms sealing passage；And air supply channel, sealing piston is further included, is arranged in the sealing passage.Beneficial effect：Contacted by soft, hard sealing piston valve seat movement with spool to realize the purpose of cut-out medium；There are the performance more relatively reliable than conventional seals and service life, the number of very big reduction later maintenance, so as to reduce cost using metal material sealing；Exhaust outlet is uniformly distributed, and efficiently and effectively can be inflated and is vented so that each point air pressure is kept uniform in gas replenishment process in piston；Controlled by source of the gas, the preferential gas excluded in piston, abrasion when reducing due to Open valve.
Description
Technical field
The utility model belongs to valve body technical field, is related to a kind of novel integrated double containment form dome valve.
Background technology
Ordinary ball valve sealing is essentially relying under pretightning force or Fluid pressure effect, and valve seat compresses with sphere and makes valve seat material
Material produces elastic-plastic deformation and reaches sealing.Since valve body and sphere use metal material, valve seat selects soft non-metallic material
Material, when this kind of ball valve is applied in cold and hot state working environment, since the material of valve seat and valve body is different, expands with heat and contract with cold inconsistent,
It is easy to cause ball valve in operation and leakage or valve opening and closing failure occurs.Dome valve is most effective in the world, can be opened and closed rapidly
Material transfer valve, and the key valve that ash-transmission system usage quantity in coal-burning power plant's is most in the world at present, using effect is optimal
Door, in system operation be used for separate and connect electric precipitation ash bucket storehouse pump between blanking, as storehouse pump exhaust valve, for list
The conveying discharge door of first storehouse pump, grey storehouse switching dome valve, grey storehouse discharging dome valve etc..Blanking dome valve causes the product in ash bucket
Ash dropping into the pump of storehouse at regular time and quantity, the storehouse of each ash bucket pump is equipped with a blanking dome valve.Once there is event in dome valve
Barrier, if processing is not in time, dust stratification is defeated not to go out, and the material position in ash bucket is higher and higher, can alarm after crossing level-sensing device, serious
Ash bucket can be cracked or electric field is pushed away, in some instances it may even be possible to cause unit outage accident.Existing dome valve utility model patent knot
Structure is expanded using airbag aeration to be combined with sphere to realize sealing and block flow of media.Since air sac sealing needs gas swollen
Swollen can be only achieved is bonded with sphere, so innate factor determines the material of air bag and the service life does not reach and using industrial and mineral renews effect
Fruit (air bag is worn, and soft materials are easily weak in high temperature environments, fracture), even if air bag replaces fluorubber material, due to pipe
Medium in road is particulate matter, is so easy to an air bag erosion failure and falls.Since the industrial and mineral of many occasions of power plant is very severe,
The service life is very short in use for gasbag-type soft seal dome valve on the market now, in the short cycle will more ventilation bag, so
It is all very not convenient to producing and safeguarding.
A kind of dome valve is recorded in the application CN201610229392.8 files submitted before inventor, which lives
Clamped seal member is provided between plug and sealing gland, the movement of piston and sealing gland is promoted by air pressure, incite somebody to action the two
Between the seal member that clamps and spool it is inconsistent so as to reach sealing, and seal member uses hard pad (such as engineering plastics)
Sealing has the performance more relatively reliable than conventional seals and a service life, but this material is compared to metal material, more easy to wear, and
Dome valve valve by off-position to open position when, existing dome valve its exhaust and ball valve open be synchronous, so easily sealing surface
Draw it is bad, air pressure present in piston cause between seal member and spool exist contradict pressure, can so increase seal member
Abrasion, so as to reduce its service life.
Utility model content
The purpose of this part is to summarize some aspects of the embodiment of the utility model and briefly to introduce some preferable
Embodiment.It may do a little simplified or be omitted to keep away in this part and the description of the present application summary and utility model title
The purpose for exempting to make this part, specification digest and utility model title obscures, and this simplification or omission cannot be used for limitation originally
The scope of utility model.
In view of it is above-mentioned or with problem present in existing dome valve, it is proposed that the utility model.
Therefore, the purpose of this utility model is to provide a kind of novel integrated double containment form dome of soft and hard seal exhaust
Valve, it is contacted to realize the purpose of cut-out medium by soft, hard sealing piston valve seat movement with spool.
To solve the above problems, scheme is as follows：A kind of novel integrated double containment form dome valve, including valve body, valve
Core, valve seat and valve deck, the spool are connected with rotating axis component, the rotating axis component rotate drive the valve core movement so as to fulfill
Dome valve is turned on and off；Gland, one end are connected with the valve deck, and the other end forms limit beyond the medial surface of the valve deck
After plane, the outer end face of spool when conflict to dome valve is closed is extended downwardly, forms sealing passage；And opened from the valve deck
Hole extends to the air supply channel that the sealing passage forms air inlet and exhaust passage, further includes sealing piston, is arranged at described close
Seal in passage, the sealing piston is made of metal material and can be moved in the sealing passage, and range of movement is farthest
Contradict to the confined planes, contradict recently to the outer end face.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The sealing piston is an integral structure, and the integral structure is the structure to match with the sealing passage, it is by taking charge of too
Vertical alloy welding deposit is made, and friction coefficient is between 0.18~0.20.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
Set in the sealing piston and have limit space jaggy, the limit space is in contact with the outer end face, and the limit
Be provided with seal in bit space, the seal protrude from notch part and the outer end face it is inconsistent.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
Source of the gas control unit is further included, it includes support component, reversal valve, connection component and gas control component；The support component and institute
Rotating axis component connection is stated, is provided with the reversal valve, described reversal valve one end is connected with the air supply channel, its other end
It is connected by the connection component with the gas control component, and the gas control component controls the switch of the reversal valve.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The gas control component further includes gas source interface and control valve, the channel interface set on described reversal valve one end by conduit with
Piston interface connects, and the piston interface connects the air supply channel, and the other end is flowed to by the connection component with source of the gas
Interface is connected；The gas source interface is arranged at the upper end of the reversal valve, after the control valve and cam are inconsistent, by institute
State source of the gas and flow to interface internal conducting, complete the source of the gas and flow to open and close between interface and the reversal valve.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The valve deck lower end is provided with limit protrusion, and the sealing piston moves formation between the confined planes and the limit protrusion
Sealing.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The rotating axis component includes upper shaft and lower rotary shaft, and the upper shaft and the lower rotary shaft are connected by turntable with the spool.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The valve deck is boss structure, and the air supply channel then extends to the boss structure from the boss structure lateral opening hole
Bottom is connected with the sealing passage.
As a kind of preferred solution of novel integrated double containment form dome valve described in the utility model, wherein：
The lower end of the sealing piston protrudes certain part and is in contact with the outer end face of the spool, and the lower end of the sealing piston
Open slot is additionally provided with close to abutting portion office.
The beneficial effects of the utility model：The utility model provides a kind of hard sealing and is vented novel integrated double containment
Form dome valve, is contacted to realize the purpose of cut-out medium by soft, hard sealing piston valve seat movement with spool.Using metal material
Material (built-up welding stellite) sealing has the performance more relatively reliable than conventional seals and service life, very big reduction later maintenance
Number, so as to reduce cost.Piston porting, and exhaust outlet is uniformly distributed, and efficiently and effectively can be inflated and is vented so that piston
Interior each point air pressure keeps uniformly, achieving the purpose that dome valve quick acting in gas replenishment process.Controlled by source of the gas, it is preferential to exclude
Gas in piston, valve is then turned on after can reducing the pressure between spool and piston, when reducing due to Open valve
Abrasion, increases its service life, further reduces maintenance cycle, saves the energy, while pass through sealing piston and outer end face
Between the mutual conflict that is equipped with, in valve opening and during closing, the operation of scraper can be carried out to the outer end face of spool,
So as to ensure good leakproofness.
Brief description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some implementations of the utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.Wherein：
Fig. 1 is a kind of the whole of novel integrated double containment form dome valve described in the utility model one embodiment
Body structure diagram；
Fig. 2 is a kind of part of novel integrated double containment form dome valve described in the utility model one embodiment
Structure enlargement diagram；
Fig. 3 is a kind of cuing open for novel integrated double containment form dome valve described in the utility model another embodiment
Face structure and partial enlargement structural representation；
Fig. 4 is a kind of the close of novel integrated double containment form dome valve described in the utility model one embodiment
Seal structure schematic diagram；
Fig. 5 is the cross-sectional view of air supply channel described in the utility model one embodiment；
Fig. 6 is a kind of cuing open for novel integrated double containment form dome valve described in the utility model further embodiment
Face structure diagram, wherein omitting sealing piston；
Fig. 7 is that a kind of sealing of novel integrated double containment form dome valve described in the utility model one embodiment is lived
Fill in cross-sectional view；
Fig. 8 is gas in a kind of novel integrated double containment form dome valve described in the utility model another embodiment
The overall structure diagram of source control unit；
Fig. 9 is the enlarged structure schematic diagram of gas source interface in the utility model one embodiment；
Figure 10 is a kind of gas of novel integrated double containment form dome valve described in the utility model one embodiment
Control component structure diagram；
Figure 11 is a kind of gas control of novel integrated double containment form dome valve described in the utility model one embodiment
The structure diagram of cam is removed in component；
Figure 12 is a kind of passage of novel integrated double containment form dome valve described in the utility model one embodiment
Interface structure schematic diagram.
Embodiment
To enable the above-mentioned purpose of the utility model, feature and advantage more obvious understandable, below in conjunction with the accompanying drawings to this
The embodiment of utility model is described in detail.
Many details are elaborated in the following description in order to fully understand the utility model, but this practicality is new
Type can also be implemented using other different from other manner described here, and those skilled in the art can be without prejudice to this reality
With doing similar popularization in the case of new intension, therefore the utility model is from the limitation of following public specific embodiment.
Secondly, " one embodiment " or " embodiment " referred to herein refers to may be included at least one reality of the utility model
A particular feature, structure, or characteristic in existing mode." in one embodiment " that different places occur in the present specification is not
Same embodiment is referred both to, nor the single or selective embodiment mutually exclusive with other embodiment.
Thirdly, the utility model combination schematic diagram is described in detail, when the utility model embodiment is described in detail, for just
In explanation, represent that the profile of device architecture can disobey general proportion and make partial enlargement, and the schematic diagram is example, its
The scope of the utility model protection should not be limited herein.In addition, the three-dimensional of length, width and depth should be included in actual fabrication
Bulk.
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
The embodiment of type is described in further detail.
Embodiment 1：
As shown in Figure 1, Fig. 1 shows a kind of agent structure schematic diagram of novel integrated double containment form dome valve.
Dome valve is often applied on the pipeline and tank body that gas-particle two-phase is blown or is conveyed, and realizes cut-out or closing function.In this embodiment
In novel integrated double containment form dome valve, that includes valve body 100, the spool 200 being arranged inside valve body 100,
The valve seat 300 of annular, and the valve deck 400 being arranged on valve seat 300, wherein, spool 200 passes through screw and rotating axis component 500
Mutually it is fixedly connected, rotating axis component 500 is moved so as to fulfill novel integrated double containment form by rotating with movable valve plug 200
Dome valve is turned on and off.In order to preferably realize the sealing of novel integrated double containment form dome valve, referring to Fig. 2 and
Fig. 3, in this embodiment, the novel integrated double containment form dome valve further comprises gland 600, its one end and valve deck
400 are mutually fixedly connected by screw, the other end beyond valve deck 400 medial surface 401 formed confined planes 601 after, extend downwardly to
Touch to the outer end face 201 of the spool 200 during novel integrated double containment form dome valve closing, form sealing passage M, should
Sealing passage M blocks sealing during medium eventually for sealing piston 700 for novel integrated double containment form dome valve.
Pointed sealing piston 700 herein, is arranged in sealing passage M, and can be moved in sealing passage M, and range of movement is most
It is remote to contradict to the confined planes 601 of gland 600, contradict recently to the outer end face 201 of spool 200.Sealing piston 700 is integral type
Structure, the structure of the integral type match with the sealing passage (M), can do synchronous piston movement in sealing passage M.
Further, the lower end of sealing piston 700 protrudes certain part and is in contact with the outer end face 201 of spool 200, and when new one
When the double containment form dome valve of body formula is in off-position, the part and the outer end of spool 200 that extend to lower end of sealing piston 700
Face 201 mutually contradicts, and spool 200 is during execution is turned on and off, since the outer end face 201 of spool 200 can revolve
Turn, it is rotating during the competing part, due to contacting and occurring opposite movement, can will remain in spool 200
The material scraper of outer end face 201 remove, so as to play the role of scraper, ensure that novel integrated double containment form dome valve has
Preferable leakproofness.
In this embodiment, the material of making sealing piston 700 is very special, it uses surfacing stellite to make
Form, stellite be it is a kind of be resistant to all kinds abrasion and corrosion and high-temperature oxydation hard alloy, i.e., it is usually said
Cobalt chromium tungsten (molybdenum) alloy or cobalt-base alloys, stellite be using cobalt as main component, containing a considerable amount of nickel, chromium,
The alloying element such as tungsten and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, a kind of alloy yet containing iron occasionally, according to component in alloy not
Together, welding wire can be made in they, and powder is used for the technique such as hard-face overlaying welding, thermal spraying, surfacing, and forge piece and powder can also be made
Metallurgical part, and be then made in the present embodiment of built-up welding, there is the performance of corrosion-and high-temp-resistant, and meet that final be made seals
The friction coefficient of piston 700 is between 0.18~0.20.It is it is preferred that close with 201 phase-contact surface of outer end face of spool 200
The finish for sealing piston 700 is 0.4 μm~0.8 μm, and meets the outer end face of spool 200 being in contact with sealing piston 700
201 finish is also 0.4 μm~0.8 μm.It so, it is possible preferably to complete sealing, and reduce the inconsistent material mill brought
Damage, therefore the number of maintenance is reduced, extend the service life used, the cost-effective and energy.
In the process, spool 200 neither produces any contact with valve body 100.Certainly, in this embodiment, should
Novel integrated double containment form dome valve is additionally provided with air supply channel 800, it extends to sealing from 400 perforate of valve deck and leads to
Road M forms the passage of air inlet and exhaust.It is preferred that as shown in figure 4, when valve deck 400 is boss structure, air supply channel 800 is certainly
The bottom that the lateral opening hole of the boss structure then extends to the boss structure is connected with sealing passage M, and is filled to balance
Gas is set, and air supply channel 800 is arranged to two passages symmetrical above and below.In this way, when external gas source by air supply channel 800 to
In the novel integrated double containment form dome valve during inflation, rotating axis component 500 is rotated by 90 ° with movable valve plug 200 and blocks medium
Passage, at this time, sealing piston 700 force sealing piston 700 to resist to 201 shape of outer end face of spool 200 due to gas pressure
Into sealing, completely cut off particle variously-shaped in gap, novel integrated double containment form dome valve completely closes；Novel integrated
When the double containment form dome valve of formula is opened, compressed air (or nitrogen) pressure release in passage M is sealed, stops itself retraction, so
Back valve core 200 rotates 90 ° to open position, since spool 200 is not contacted with sealing piston 700, realizes novel integrated double density
The unlatching of envelope form dome valve, and keying torque is small, abrasion is small, so as to improve service life, greatly reduces maintenance cost
And the time.
Embodiment 2：
As shown in Figure 5 and Figure 6, and referring to Fig. 1~Fig. 4, novel integrated double containment form in this embodiment
Dome valve, which includes valve body 100, the spool 200 being arranged inside valve body 100, annular valve seat 300, and be arranged at
Valve deck 400 on valve seat 300, wherein, spool 200 is fixedly linked by screw and rotating axis component 500, and rotating axis component 500 passes through
Rotation is moved with movable valve plug 200 to be turned on and off so as to fulfill novel integrated double containment form dome valve.Herein, in order to
Preferably realize the opening and closing of novel integrated double containment form dome valve, rotating axis component 500 includes upper 501 He of shaft
Lower rotary shaft 502, upper shaft 501 and lower rotary shaft 502 are connected by rotating arm disk 503 with spool 200, so as to fulfill band movable valve plug 200
Movement.In order to preferably realize the sealing of novel integrated double containment form dome valve, referring to Fig. 2 and Fig. 3, implement herein
In example, which further comprises gland 600, and its one end passes through screw phase with valve deck 400
It is fixedly connected, the other end is extended downwardly and contradicted to novel integrated after the medial surface 401 of valve deck 400 forms confined planes 601
Spool 200 of double containment form dome valve when closing outer end face 201, form sealing passage M, sealing passage M finally uses
The medium of sealing when sealing piston 700 blocks to(for) novel integrated double containment form dome valve.In this embodiment, its
Actually also there are position limiting structure at one, i.e.,：The limit protrusion 402 that the lower end of valve deck 400 is set, which can
The range of movement of sealing piston 700 is limited, prevents sealing piston 700 " coming off " so that sealing piston 700 is in confined planes 601
Movement forms sealing between limit protrusion 402.Pointed sealing piston 700 herein, is arranged in sealing passage M, and energy
Enough to be moved in sealing passage M, range of movement is farthest contradicted to the confined planes 601 of gland 600, is contradicted recently to spool 200
Outer end face 201.In order to preferably realize sealing, prevent the leakage of gas after inflation, be also provided with the present embodiment soft close
Envelope, specifically, being provided with limit space in sealing piston 700, it is the concave passage being provided with sealing piston 700, thus
The tool limit space jaggy of formation, and seal S is provided with the limit space, and seal S is due to interference fit
Active force is spacing in limit space, and seal S protrudes from the part of notch and the outer end face 201 of spool 200 in limit space
It is inconsistent, a soft sealing is carried out to outer end face 201, soft or hard combination is cooperatively formed between the hard sealing of sealing piston 700
Double containment formed, wherein seal S is sealing ring made of special soft materials, and works as novel integrated double containment shape
Hard valve seat damage, valve can still be reached zero leakage by formula dome valve when contingency snaps into tubular metal object at work,
Therefore, it is possible to cooperatively form soft or hard combination double containment form between the sealing piston 700 of rigid material, the close of dome valve is improved
Sealing property, such as：Material is fluorubber, and fluorubber refers to the synthesis macromolecule containing fluorine atom on the carbon atom of main chain or side chain
Elastomer；The introducing of fluorine atom, assigns rubber excellent heat resistance, inoxidizability, oil resistivity, corrosion resistance and resistance to atmospheric aging
Property, the leakage of material is further prevented, and between the valve body 100 positioned at the dome valve, valve seat 300, valve deck 400 and gland 600
Junction be both provided with rubber ring, the sealing performance between strengthening part junction, so as to improve the leakproofness of dome valve.Compared with
Goodly, sealing piston 700 is made of metal alloy, and when sealing contact to be formed with the outer end face 201 of spool 200 to be sealed, so
Sealing effect is more preferable.Sealing piston 700 and sealing piston 700 do not contact all with the outer end face 201 of spool 200, and when new
When the double containment form dome valve of integral type is in off-position, the part extended to lower end of sealing piston 700 and spool 200
Outer end face 201 mutually contradicts, and spool 200 is during execution is turned on and off, since the outer end face 201 of spool 200 can be sent out
Raw rotation, it is rotating during the competing part, due to contacting and occurring opposite movement, can will remain in spool
The material scraper of 200 outer end face 201 removes, so as to play the role of scraper, ensures novel integrated double containment form dome valve
With preferable leakproofness.
In this embodiment, the material of making sealing piston 700 is very special, it uses surfacing stellite to make
Form, stellite be it is a kind of be resistant to all kinds abrasion and corrosion and high-temperature oxydation hard alloy, i.e., it is usually said
Cobalt chromium tungsten (molybdenum) alloy or cobalt-base alloys, stellite be using cobalt as main component, containing a considerable amount of nickel, chromium,
The alloying element such as tungsten and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, a kind of alloy yet containing iron occasionally, according to component in alloy not
Together, welding wire can be made in they, and powder is used for the technique such as hard-face overlaying welding, thermal spraying, surfacing, and forge piece and powder can also be made
Metallurgical part, and be then made in the present embodiment of built-up welding, there is the performance of corrosion-and high-temp-resistant, and meet final obtained close
The friction coefficient of piston 700 is sealed between 0.18~0.20.It is preferred that with 201 phase-contact surface of outer end face of spool 200
The finish of sealing piston 700 is 0.4 μm~0.8 μm, and meets the outer end face of spool 200 being in contact with sealing piston 700
201 finish is also 0.4 μm~0.8 μm.It so, it is possible preferably to complete sealing, and reduce the inconsistent material mill brought
Damage, therefore the number of maintenance is reduced, extend the service life used, the cost-effective and energy.
In the process, spool 200 neither produces any contact with valve body 100.Certainly, in this embodiment, should
Novel integrated double containment form dome valve is additionally provided with air supply channel 800, it extends to sealing from 400 perforate of valve deck and leads to
Road M forms the passage of air inlet and exhaust.It is preferred that as shown in figure 4, when valve deck 400 is boss structure, air supply channel 800 is certainly
The bottom that the lateral opening hole of the boss structure then extends to the boss structure is connected with sealing passage M, and is filled to balance
Gas is set, and air supply channel 800 is arranged to two passages symmetrical above and below.In this way, when external gas source by air supply channel 800 to
In the novel integrated double containment form dome valve during inflation, rotating axis component 500 is rotated by 90 ° with movable valve plug 200 and blocks medium
Passage, at this time, sealing piston 700 force sealing piston 700 to resist to 201 shape of outer end face of spool 200 due to gas pressure
Into sealing, completely cut off particle variously-shaped in gap, novel integrated double containment form dome valve completely closes；Novel integrated
When the double containment form dome valve of formula is opened, compressed air (or nitrogen) pressure release in passage M is sealed, stops itself retraction, so
Back valve core 200 rotates 90 ° to open position, since spool 200 is not contacted with sealing piston 700, realizes novel integrated double density
The unlatching of envelope form dome valve, and keying torque is small, abrasion is small, so as to improve service life, greatly reduces maintenance cost
And the time.
As described above, it is not difficult to send out in description more than to novel integrated double containment form dome valve working status
It is existing, novel integrated double containment form dome valve valve opening or spool 200 and valve body when closing in material transportation process
It is not directly contacted between 100, efficiently solves mutual hard friction, extends the service life of spool 200, and by
It is used for sealing in the sealing piston 700 using hardness, is strengthening the leakproofness of novel integrated double containment form dome valve
When while also integrally extend the service life of novel integrated double containment form dome valve, greatly meet production technology
Need, ensure that the person and equipment safety.
Embodiment 3：
As shown in Figure 5 and Figure 6, and referring to Fig. 1~Fig. 4, novel integrated double containment form in this embodiment
Dome valve, which includes valve body 100, the spool 200 being arranged inside valve body 100, annular valve seat 300, and be arranged at
Valve deck 400 on valve seat 300, wherein, spool 200 is fixedly linked by screw and rotating axis component 500, and rotating axis component 500 passes through
Rotation is moved with movable valve plug 200 to be turned on and off so as to fulfill novel integrated double containment form dome valve.Herein, in order to
Preferably realize the opening and closing of novel integrated double containment form dome valve, rotating axis component 500 includes upper 501 He of shaft
Lower rotary shaft 502, upper shaft 501 and lower rotary shaft 502 are connected by rotating arm disk 503 with spool 200, so as to fulfill band movable valve plug 200
Movement.In order to preferably realize the sealing of novel integrated double containment form dome valve, referring to Fig. 2 and Fig. 3, implement herein
In example, which further comprises gland 600, and its one end passes through screw phase with valve deck 400
It is fixedly connected, the other end is extended downwardly and contradicted to novel integrated after the medial surface 401 of valve deck 400 forms confined planes 601
Spool 200 of double containment form dome valve when closing outer end face 201, form sealing passage M, sealing passage M finally uses
The medium of sealing when sealing piston 700 blocks to(for) novel integrated double containment form dome valve.In this embodiment, its
Actually also there are position limiting structure at one, i.e.,：The limit protrusion 402 that the lower end of valve deck 400 is set, which can
The range of movement of sealing piston 700 is limited, prevents sealing piston 700 " coming off " so that sealing piston 700 is in confined planes 601
Movement forms sealing between limit protrusion 402.Pointed sealing piston 700 herein, is arranged in sealing passage M, and energy
Enough to be moved in sealing passage M, range of movement is farthest contradicted to the confined planes 601 of gland 600, is contradicted recently to spool 200
Outer end face 201.In order to preferably realize sealing, the leakage of gas after inflation, sealing piston 700 and the inner side of valve deck 400 are prevented
Seal S is provided between face 401 and the ring side 602 of gland 600, it is sealing ring made of special soft materials,
And when novel integrated double containment form dome valve at work just in case when snapping into tubular metal object can hard valve seat damage,
Valve can still reach zero leakage, double therefore, it is possible to cooperatively form soft or hard combination between the sealing piston 700 of rigid material
Seal form, improves the sealing performance of dome valve, such as：Material is fluorubber, and fluorubber refers to the carbon atom of main chain or side chain
On the synthesis macromolecular elastomer containing fluorine atom；The introducing of fluorine atom, assigns the excellent heat resistance of rubber, inoxidizability, resistance to
Oiliness, corrosion resistance and resistance to weathering, further prevent the leakage of material.It is preferred that sealing piston 700 is closed using metal
Gold is made, and when sealing contacts formation sealing with the outer end face 201 of spool 200, and such sealing effect is more preferable.It is preferred that sealing is lived
Plug 700 is an integral structure.And when novel integrated double containment form dome valve is in off-position, sealing piston 700 to
Lower end extension part and the outer end face 201 of spool 200 mutually contradict, spool 200 during execution is turned on and off,
Since the outer end face 201 of spool 200 can rotate, it is rotating during the competing part, due to contacting and occurring
Opposite movement, can remove the material scraper for the outer end face 201 for remaining in spool 200, so as to play the role of scraper, ensure new
The double containment form dome valve of type integral type has preferable leakproofness, while in the present embodiment, with reference to shown in Fig. 3, sealing is lived
The lower end of plug 700 protrudes certain part and is in contact with the outer end face 201 of spool 200, and the end portion of sealing piston 700 with
The outer end face 201 of spool 200 mutually contradicts, and the lower end of sealing piston 700 is additionally provided with open slot close to abutting portion office
701, setting for the open slot 701 can prevent ball valve in operation process during scraper as the effect for caching material
Middle generation bounce suddenly, so as to cause certain damage to ball valve, reduces its service life used, increases the maintenance cost of product.
In this embodiment, the material of making sealing piston 700 is very special, it uses surfacing stellite to make
Form, stellite be it is a kind of be resistant to all kinds abrasion and corrosion and high-temperature oxydation hard alloy, i.e., it is usually said
Cobalt chromium tungsten (molybdenum) alloy or cobalt-base alloys, stellite be using cobalt as main component, containing a considerable amount of nickel, chromium,
The alloying element such as tungsten and a small amount of molybdenum, niobium, tantalum, titanium, lanthanum, a kind of alloy yet containing iron occasionally, according to component in alloy not
Together, welding wire can be made in they, and powder is used for the technique such as hard-face overlaying welding, thermal spraying, surfacing, and forge piece and powder can also be made
Metallurgical part, and be then made in the present embodiment of built-up welding, there is the performance of corrosion-and high-temp-resistant, and meet final obtained close
The friction coefficient of piston 700 is sealed between 0.18~0.20.It is preferred that with 201 phase-contact surface of outer end face of spool 200
The finish of sealing piston 700 is 0.4 μm~0.8 μm, and meets the outer end face of spool 200 being in contact with sealing piston 700
201 finish is also 0.4 μm~0.8 μm.It so, it is possible preferably to complete sealing, and reduce the inconsistent material mill brought
Damage, therefore the number of maintenance is reduced, extend the service life used, the cost-effective and energy.
In the process, spool 200 neither produces any contact with valve body 100.Certainly, in this embodiment, should
Novel integrated double containment form dome valve is additionally provided with air supply channel 800, it extends to sealing from 400 perforate of valve deck and leads to
Road M forms the passage of air inlet and exhaust.It is preferred that as shown in figure 4, when valve deck 400 is boss structure, air supply channel 800 is certainly
The bottom that the lateral opening hole of the boss structure then extends to the boss structure is connected with sealing passage M, and is filled to balance
Gas is set, and air supply channel 800 is arranged to two passages symmetrical above and below.In this way, when external gas source by air supply channel 800 to
In the novel integrated double containment form dome valve during inflation, rotating axis component 500 is rotated by 90 ° with movable valve plug 200 and blocks medium
Passage, at this time, sealing piston 700 force sealing piston 700 to resist to 201 shape of outer end face of spool 200 due to gas pressure
Into sealing, completely cut off particle variously-shaped in gap, novel integrated double containment form dome valve completely closes；Novel integrated
When the double containment form dome valve of formula is opened, compressed air (or nitrogen) pressure release in passage M is sealed, stops itself retraction, so
Back valve core 200 rotates 90 ° to open position, since spool 200 is not contacted with sealing piston 700, realizes novel integrated double density
The unlatching of envelope form dome valve, and keying torque is small, abrasion is small, so as to improve service life, greatly reduces maintenance cost
And the time.
In the present embodiment, in order to solve the problems, such as that the unlatching of spool 200 is synchronous with piston exhaust process, when valve needs to beat
When opening, its exhaust of existing dome valve and the opening of spool 200 are synchronous, due to air pressure present in piston, are so held
Easily sealing surface is drawn bad.Therefore source of the gas control unit 900 is further included in the present embodiment, can be real before the opening of spool 200
Preferentially it is vented in existing sealing piston 700, so that pressure, i.e. sealing piston 700 and spool are not present in sealing piston 700
There is no extruding between 200, spool 200 is then turned on after the completion of pressure release, therebetween there will be no abrasion, reduces spool 200
Due to the loss of unlatching, increase the service life of dome valve.Specifically,
With reference to shown in Fig. 7~10, which further includes source of the gas control unit 900, it includes support component 901, commutation
Valve 902, connection component 903, the gentle source component 905 of gas control component 904, specifically, being provided with support in 100 end-rack of valve body
Component 901, source of the gas control unit 900 are fixedly connected by the bolt of support component 901 with 100 phase of valve body, support component 901
On be fixed with source of the gas component 905, source of the gas component 905 can produce different sources of the gas, will be preferably to set herein in the present embodiment
In air pump or air compressor in support component 901, such as air pump is " air pump ", from an enclosure space exclude air or
From a kind of device of enclosure space addition air；Air pump is broadly divided into electric air pump, hand air pump and foot-propelled air pump；Electric air pump
Air pump using electric power as power, does not stop compressed air by electric power, produces air pressure；Its operation principle is：Engine passes through two
V-belt drives air pump bent axle, so as to drive piston to be inflated, the gas got imports gas receiver, the opposing party by gas-guide tube
Face gas receiver imports the gas in gas receiver in the pressure regulator valve being fixed on air pump further through a gas-guide tube, so as to control storage
Air pressure in inflator, when the air pressure in gas receiver is not up to the pressure of pressure regulator valve setting, into pressure regulator valve out of gas receiver
Gas cannot open-top pressure regulator valve valve；When the air pressure in gas receiver reaches the pressure of pressure regulator valve setting, enter out of gas receiver
The open-top pressure regulator valve valve of gas of pressure regulator valve, into air pump in the air flue that is communicated with pressure regulator valve, and pass through air flue and control air pump
Air inlet is normally opened, so that air pump running no load, reaches reduction kinetic equation loss, protects the purpose of air pump；When in gas receiver
When air pressure is less than the pressure of pressure regulator valve setting because of loss, valve in pressure regulator valve by its return, disconnects air pump by return spring
Control gas circuit, air pump starts to inflate again, so circulation, the source of the gas of different air pressures just can be produced, so as to supply reversal valve
902 use；And reversal valve 902 is fixed in support component 901, one end is connected with sealing piston 700, the other end and gas control component
904 connections, further, i.e., the channel interface 902a set on 902 one end of reversal valve is connected by conduit with piston interface R, living
Fill in interface R and connect the air supply channel 800, its other end is connected by connecting component 903 with gas control component 904, and gas control
Component 904 controls the switch of reversal valve 902.Reversal valve 902 in the present embodiment is gas pressure change valve, is pressed in directional control valve
Action direction of the air-flow in valve, can be divided into one-way type control valve and reversing control valve, such as pressure control reversal valve is profit
With gas pressure come make main valve plug move and make gas and changing flow to, by control mode difference be divided into pressurized control, unload it is voltage-controlled
System and differential pressure control three kinds；Pressurized control refers to that added control signal pressure is gradually increasing, when air pressure increases to spool
Operating pressure when, main valve just commutates；Release control refers to that added gas control signal pressure is to reduce, when being reduced to a certain pressure
During force value, main valve commutation；Differential pressure control is main valve plug is commutated under the action of pressure at two ends difference, and Pneumatic reversal valve presses main valve
Structure is different, and can be divided into two kinds of principal modes of cut-off type and side valve type, can be divided into pressure control, Electromagnetic Control by control mode
Two Mechanical courses, manpower control and time control；It can be divided into several several port valves by the switching position of valve and the number of line portals；This
Gas pressure change valve in embodiment is entered by different sources of the gas so as to change the movement of 902 main valve plug of reversal valve, is changed wherein
The flow direction of gas, realizes preferential discharge of the source of the gas in reversal valve 902.And the connection component 903 on the other end of reversal valve 902
Be connected with gas control component 904, connection component 903 described herein as a preferred embodiment, its for hard tube or hose with it is corresponding
Coupling coordinates the connectivity structure being connected, and achievees the purpose that to connect gas, the output terminal of reversal valve 902 is connected by gas-guide tube
Piston interface R air inlets into sealing piston 700, piston interface R is connected with the vertical gas port A in air supply channel 800, by source of the gas
By vertical gas port A guiding horizontals gas port B, sealing piston 700 is inflated afterwards, and the process being vented is then to first pass through water
Flat gas port B, discharges gas after being oriented to vertical gas port A afterwards.
Further, gas control component 904 further includes gas source interface 904a, control valve 904b, source of the gas flow direction in the present embodiment
Interface 904c and cam 904d, specifically, gas source interface 904a is the interface for providing source of the gas, the gas produced by compressed air
Pressure, is provided by air compressor or air pump, using compressed air, realizes the source of the gas of different pressures size；Gas in the present embodiment
Source interface 904a further includes the gas source interface under two states：Open gas source interface 904a-1 and close gas source interface 904a-2, respectively
Source of the gas under being corresponded to for 200 on and off two states of spool, is inputted in reversal valve by the source of the gas under different conditions, changes main valve
The operation of core, realizes the reversing switch in reversal valve 902, achievees the purpose that gas commutates.And gas source interface 904a passes through connector
Interface 904c is flowed to source of the gas with hose to be connected, source of the gas by and gas source interface 904a flowed into source of the gas in interface 904c, and gas
Source stream includes first interface 904c-1 and second interface 904c-2, wherein first interface 904c-1 and gas source interface to interface 904c
904a is connected by angle coupling, and inlet ends of the another second interface 904c-2 then with reversal valve 902 is connected, and between two interfaces
It is synchronous between control valve 904b and spool 200 in order to realize by the control intercommunication of control valve 904b, connect with spool 200
Cam 904d corresponding with control valve 904b is provided with the shaft connect, in this way, when spool 200 rotates, cam 904d with
Synchronous rotary occurs to correspondence position in it, and, trigger switch inconsistent with control valve 904b, connects source of the gas and flow to interface at this time
Two interfaces on 904c, gas flows to interface 904c by source of the gas and enters in reversal valve 902, and the exhaust end of reversal valve 902 leads to
Cross piston interface R to be connected with sealing piston 700, then to being inflated sealing in sealing piston 700, this for sealing piston 700 into
The process of gas.And when spool 200 needs to open, in order to solve spool 200 and 700 exhaust process of sealing piston is synchronous asks
Topic, provides control signal at this time, and by switching source of the gas, source of the gas enters in reversal valve 902, and the main valve plug of reversal valve 902 is opened,
Gas in sealing piston 700 will be achieveed the purpose that pressure release, beaten again after pressure release by being preferentially discharged in reversal valve 902
Valve opening core 200, is just not present air pressure between spool 200 and sealing piston 700 at this time, namely there is no extruding force, therefore can subtract
Few abrasion therebetween, and also metal alloy is made sealing piston 700, more improves service life, reduces maintenance times,
Save the energy.Pressurization process is in the present embodiment：Air pump or air compressor produce the source of the gas of different air pressures first
Afterwards, in the pass gas source interface 904a-2 that source of the gas enters, and gas source interface 904a connection sources of the gas flow to interface 904c, that is, close source of the gas
Interface 904a-2 is connected by conduit and connector with first interface 904c-1, therefore source of the gas enters in first interface 904c-1
Afterwards, control valve 904b is contradicted by cam 904d, will be turned between first interface 904c-1 and second interface 904c-2, source of the gas
Enter the inlet end of reversal valve 902 by second interface 904c-2, its output terminal is connected by conduit with piston interface R, into gas
In source channels 800, the movement of sealing piston 700 is promoted, dome valve is sealed；And the process of pressure release is, control signal is given
Go out pressure release signal, another source of the gas enters in reversal valve 902 into after opening in gas source interface 904a-1, so that the master of reversal valve 902
Spool is run, and opens the valve of reversal valve 902, i.e., when the valve of dome valve needs to open, source of the gas enters reversal valve at the same time
In, and the source of the gas can reach the condition pressure of the unlatching of scavenging air valve 902, therefore reversal valve 902 is opened therewith, the gas inside piston
The no pressure between sealing piston 700 and ball valve core is realized, it is achieved that spool since pressure acts on reversal valve emptying in source
Zero air pressure opened between 200 and sealing piston 700, reduces abrasion.
Certainly in the present embodiment, pressure gauge is also provided with reversal valve 902 and is capable of the pipe of control valve switching speed
Road, and valve feedback signal device is provided with control valve 904b ends, pressure gauge by sensing element in table (Bourdon tube,
Bellows, bellows) elastic deformation, then pressure deformation is conducted to pointer by the switching mechanism of movement in table, causes pointer to turn
Move to show pressure, while increase the speed of pipe control change-over valve switch, the pressure ginseng of reversal valve 902 can not only be fed back
Number, is preferably monitored process, moreover it is possible to the device in valve is protected, there is provided security.And valve feedback signal device,
It is then that the switch degree of valve is fed back, by comparison operation, automatically determines the aperture optimum position of valve, reach in work
Optimum state.
The above, is only the preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art is in the technical scope that the utility model discloses, according to this practicality
New technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (9)
1. a kind of novel integrated double containment form dome valve, including valve body (100), spool (200), valve seat (300) and valve
Cover (400), the spool (200) is connected with rotating axis component (500), and the rotating axis component (500), which rotates, drives the spool
(200) movement is turned on and off so as to fulfill dome valve；Gland (600), one end is connected with the valve deck (400), another
End is after the medial surface (401) of the valve deck (400) forms confined planes (601), when extending downwardly conflict to dome valve and closing
Spool (200) outer end face (201), formed sealing passage (M)；And extended to from the valve deck (400) perforate described close
Seal the air supply channel (800) that passage (M) forms air inlet and exhaust passage, it is characterised in that：Further include,
Sealing piston (700), is arranged in sealing passage (M), the sealing piston (700) be made of metal material and
It can be moved in the sealing passage (M), range of movement is farthest contradicted to the confined planes (601), is contradicted recently to described
Outer end face (201).
2. novel integrated double containment form dome valve as claimed in claim 1, it is characterised in that：The sealing piston
(700) it is an integral structure, the integral structure is the structure to match with the sealing passage (M), it is closed by Si Taili
Golden built-up welding is made, and friction coefficient is between 0.18~0.20.
3. novel integrated double containment form dome valve as claimed in claim 1 or 2, it is characterised in that：The sealing is lived
Fill in set on (700) and have limit space jaggy, the limit space is in contact with the outer end face (201), and the limit
Be provided with seal (S) in bit space, the seal (S) protrude from notch part and the outer end face (201) it is inconsistent.
4. novel integrated double containment form dome valve as claimed in claim 3, it is characterised in that：Further include source of the gas control
Unit (900), it includes support component (901), reversal valve (902), connection component (903) and gas control component (904)；
The support component (901) is connected with the rotating axis component (500), is provided with the reversal valve (902), described to change
Connected to valve (902) one end with the air supply channel (800), its other end passes through the connection component (903) and the gas control
Component (904) is connected, and the gas control component (904) controls the switch of the reversal valve (902).
5. novel integrated double containment form dome valve as claimed in claim 4, it is characterised in that：The gas control component
(904) gas source interface (904a) and control valve (904b) are further included,
The channel interface (902a) set on described reversal valve (902) one end is connected by conduit with piston interface (R), the work
Fill in interface (R) and connect the air supply channel (800), and the other end flows to interface by the connection component (903) with source of the gas
(904c) is connected；The gas source interface (904a) is arranged at the upper end of the reversal valve (902), the control valve (904b)
With cam (904d) it is inconsistent after, the source of the gas is flowed into conducting inside interface (904c), the source of the gas is completed and flows to interface
Open and close between (904c) and the reversal valve (902).
6. the novel integrated double containment form dome valve as described in claim 1,2,4 or 5 are any, it is characterised in that：Institute
State valve deck (400) lower end and be provided with limit protrusion (402), the sealing piston (700) is in the confined planes (601) and the limit
Movement forms sealing between position raised (402).
7. novel integrated double containment form dome valve as claimed in claim 6, it is characterised in that：The rotating axis component
(500) upper shaft (501) and lower rotary shaft (502) are included, the upper shaft (501) and the lower rotary shaft (502) pass through turntable
(503) it is connected with the spool (200).
8. novel integrated double containment form dome valve as claimed in claim 7, it is characterised in that：The valve deck (400)
For boss structure, the air supply channel (800) then extends to the bottom of the boss structure from the boss structure lateral opening hole
Portion is connected with the sealing passage (M).
9. novel integrated double containment form dome valve as claimed in claim 7 or 8, it is characterised in that：The sealing is lived
The lower end of plug (700) protrudes certain part and is in contact with the outer end face (201) of the spool (200), and the sealing piston
(700) lower end is additionally provided with open slot (701) close to abutting portion office.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720849830.0U CN207364310U (en) | 2017-07-13 | 2017-07-13 | A kind of novel integrated double containment form dome valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720849830.0U CN207364310U (en) | 2017-07-13 | 2017-07-13 | A kind of novel integrated double containment form dome valve |
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| CN207364310U true CN207364310U (en) | 2018-05-15 |
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| CN201720849830.0U Active CN207364310U (en) | 2017-07-13 | 2017-07-13 | A kind of novel integrated double containment form dome valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019011345A1 (en) * | 2017-07-13 | 2019-01-17 | 江苏艮德电力设备有限公司 | Novel dual-sealing dome valve |
| CN109838610A (en) * | 2019-03-19 | 2019-06-04 | 常州亚泓环保科技有限公司 | The ball valve of seal assembly with compensation function |
-
2017
- 2017-07-13 CN CN201720849830.0U patent/CN207364310U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019011345A1 (en) * | 2017-07-13 | 2019-01-17 | 江苏艮德电力设备有限公司 | Novel dual-sealing dome valve |
| CN109838610A (en) * | 2019-03-19 | 2019-06-04 | 常州亚泓环保科技有限公司 | The ball valve of seal assembly with compensation function |
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