CN105889553A - Ball valve with external mechanism for preventing valve rod from being blown out - Google Patents
Ball valve with external mechanism for preventing valve rod from being blown out Download PDFInfo
- Publication number
- CN105889553A CN105889553A CN201610514533.0A CN201610514533A CN105889553A CN 105889553 A CN105889553 A CN 105889553A CN 201610514533 A CN201610514533 A CN 201610514533A CN 105889553 A CN105889553 A CN 105889553A
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- China
- Prior art keywords
- valve
- blow
- valve rod
- gland
- stuffing
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
-
- 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
-
- 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
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the plug
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The invention discloses a ball valve with an external mechanism for preventing a valve rod from being blown out. The ball valve comprises a valve cover, a valve base, a valve body, a supporting shaft, a ball body, the valve rod, a stuffing box, stuffing, a press cover, a blowing-out preventing press sleeve, a friction plate and a screw. The blowing-out preventing press sleeve is arranged on the upper end face of the stuffing box, the blowing-out preventing press sleeve is fixed to the upper end face of the stuffing box through the screw, a circular bead is arranged at the upper portion of the valve rod, the friction plate is arranged on the circular bead, and the friction plate is clamped between the circular bead of the valve rod and the blowing-out preventing press sleeve. According to the ball valve with the external mechanism for preventing the valve rod from being blown out, a work state of the mechanism for preventing the valve rod from being blown out can be visually known, and the friction plate is convenient and quick to replace. Furthermore, an internal structure of the valve is simplified, the processing amount of corresponding parts like the valve body and the work load for assembling the valve are saved, and the production cost of the valve is saved.
Description
Technical field
The present invention relates to ball valve technical field, especially relate to a kind of external anti-blow valve rod mechanism
Ball valve.
Background technology
It is said that in general, the pressure of valve cavity is greater than ambient pressure.Pressure when body cavity
During more than ambient pressure, valve rod subjects outside blowing force.If valve rod is blown, then can make valve
Door lost efficacy and even produced life security incident.
In order to prevent valve rod to be blown, typically it is positioned at this one end of valve body at valve rod and is machined with convex
Friction plate is set on platform, and boss, abuts friction plate, to prevent with stuffing-box or other parts
Valve rod is blown.But, for high pressure valve, owing to the yearning of valve rod blows out power effect
Cause pressing friction sheet；Now if valve rod rotates, usually too big because of frictional force, friction plate
Sintering is occurred to cause valve stuck (if it addition, valve cavity being full of with valve rod, stuffing-box
Solid state powder, friction plate also can be caused a certain degree of wear damage by this solid state powder).
Because friction plate is positioned in valve cavity, friction plate and the valve rod contacted, stuffing-box etc. zero
The abrasion condition of part can't see (i.e. not observing concrete abrasion condition), so have to decompose
Whole valve, just can check for Sintering Problem, wear problem, just can be to friction
Sheet is replaced processing.
In sum, still there is the duty of anti-blow mechanism and can not intuitively show in conventional ball valve
Going out, check inconvenience, friction plate is changed the technology such as inconvenience and valve mechanism excessively complexity and is lacked
Fall into；
Therefore, how to overcome the above-mentioned technological deficiency of conventional ball valve be those skilled in the art urgently
Solve the technical problem that.
Summary of the invention
The present invention provides a kind of external anti-blow valve rod mechanism ball valve, asks in order to solve above-mentioned technology
Topic.
The present invention solves that the problems referred to above be the technical scheme is that
The present invention provide the external anti-blow valve rod mechanism ball valve of one, including valve gap, valve seat,
Valve body, support shaft, spheroid, valve rod, stuffing-box, filler, gland, anti-blow gland, rub
Pad and screw；
Wherein, in described valve body, it is provided with spheroid；The both sides of described valve body are provided with valve gap；
Fluid media (medium) import and fluid media (medium) outlet it is respectively equipped with on two described valve gaps；
The lateral symmetry being positioned at described spheroid arranges described valve seat, and described valve seat is movably set in valve
In the endoporus that lid is corresponding；Described valve seat end face is along the circumferential direction uniformly arranged multiple cylindrical spring,
The described cylindrical spring of pre-pressing is for providing the described valve seat pretightning force to described spheroid；
The upper end of described spheroid is provided with described valve rod, and described valve rod is upwards fixedly installed on described valve
On body；And the lower end of described spheroid is provided with described support shaft；Described support shaft is fixed on valve body
Lower section；Described valve body is provided above described stuffing-box, and the endoporus of described stuffing-box adds filler；
Described gland compresses downwards the described filler fluid media (medium) for sealed valve inner chamber through nut；Institute
Stating stuffing-box upper surface and arrange anti-blow gland, described anti-blow gland is screwed at filler
The upper surface of letter；
Described valve rod top is provided with shoulder, and described shoulder arranges friction plate, described friction plate
It is clipped between the shoulder of described valve rod and described anti-blow gland.
Preferably, can embodiment as one；Described anti-blow gland specifically includes gland pipe
Portion and be positioned at the outer edge of bottom of described pressure cannula portion；
Being provided with through hole at the top center of described pressure cannula portion, the through hole of described pressure cannula portion is used
In through described valve rod；It is provided with multiple screwed hole on the surface of described outer edge, described anti-blows
Go out the described screwed hole on gland for through described screw.
Preferably, can embodiment as one；It is provided with at the top outer rim of described stuffing-box
Multiple screwed holes；Described screwed hole on described stuffing-box is for through described screw.
Preferably, can embodiment as one；Screwed hole on described anti-blow gland and institute
State the screwed hole position one_to_one corresponding on stuffing-box.
Preferably, can embodiment as one；Described anti-blow gland is stainless steel structure
Part.
Preferably, can embodiment as one；Described friction plate is antifriction alloy sheet；Institute
Stating friction plate is two panels.
Preferably, can embodiment as one；Described stuffing-box is stainless steel structure part.
Preferably, can embodiment as one；Described filler be flexible graphite structure part or
It it is PTFE structural member.
Preferably, can embodiment as one；The external cylindrical surface of described valve seat is provided with rubber
Glue sealing ring mounting groove；Described rubber seal mounting groove inlays to be provided with O type rubber close
Seal；Described O type rubber seal and described valve body constitute sealing structure.
Preferably, can embodiment as one；Described O type rubber seal is specially fluorine
Rubber seal, silicone rubber O-ring, teflin ring.
Compared with prior art, this have the advantage that:
The present invention provide the external anti-blow valve rod mechanism ball valve of one, mainly by valve gap, valve seat,
Valve body, support shaft, spheroid, valve rod, stuffing-box, filler, gland, anti-blow gland, rub
The structure such as pad and screw forms；
The upper end of described spheroid is provided with described valve rod, and described valve rod is upwards fixedly installed on described valve
On body；And the lower end of described spheroid is provided with described support shaft；Described support shaft is fixed on valve body
Lower section；Described valve body is provided above described stuffing-box, and the endoporus of described stuffing-box adds filler；
Described gland compresses downwards the described filler fluid media (medium) for sealed valve inner chamber through nut；Institute
Stating stuffing-box upper surface and arrange anti-blow gland, described anti-blow gland is screwed at filler
The upper surface of letter；
Described valve rod top is provided with shoulder, and described shoulder arranges friction plate, described friction plate
It is clipped between the shoulder of described valve rod and described anti-blow gland.
Analyze above-mentioned primary structure to understand: anti-blow gland screw is sheathed is fixed on stuffing-box for this
Upper surface (or claim anti-blow gland by above-mentioned valve rod, the shoulder on valve rod top and friction plate
All it is enclosed in a single outer intracavity, so has only to dismantle anti-blow gland and just can check
Sintering situation between the abrasion condition of friction plate and three parts, has been also convenient for rubbing simultaneously
The replacing of pad)；The external anti-blow valve rod mechanism ball valve that i.e. embodiment of the present invention provides, its
By anti-blow for valve rod mechanism from valve cavity is moved to valve body, then facilitate friction plate, valve rod etc.
The inspection of the abrasion condition of part and replacing.
It will be apparent that the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, it is permissible
Get information about the duty of anti-blow mechanism；The friction plate of external anti-blow valve rod mechanism,
Valve rod shoulder and anti-blow pressing plate are all exposed to outside valve body, form independent work structuring；This
Whether sample one carrys out user can get information about its duty, such as rotate motility, sinter
Card is waited indefinitely；
The external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, its friction plate replacing side
The most quick；If find friction disc wear, sinter stuck, it is not necessary to decompose valve, it is possible at body
Outer renewal part (i.e. the most replaceable friction plate of anti-blow gland under dismounting).
The external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, which simplify in valve
Portion's structure, eliminates processing capacity and valve assembly work amount, the Jin Erjie of the corresponding parts such as valve body
The about production cost of valve.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical side of the prior art
Case, will make letter to the accompanying drawing used required in detailed description of the invention or description of the prior art below
Singly introduce, it should be apparent that, the accompanying drawing in describing below is some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other accompanying drawing according to these accompanying drawings.
The integral installation of the external anti-blow valve rod mechanism ball valve that Fig. 1 provides for the embodiment of the present invention
Distribution structure schematic diagram；
Fig. 2 is the partial enlargement structural representation of external anti-blow valve rod mechanism ball valve in Fig. 1；
Reference:
Valve gap 1；
Valve seat 2；
Valve body 3；
Support shaft 4；
Spheroid 5；
Valve rod 6；
Stuffing-box 7；
Filler 8；
Gland 9；
Anti-blow gland 10；
Friction plate 11；
Screw 12；
Cylindrical spring 13；
O type rubber seal 14；
Shoulder A.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, aobvious
So, described embodiment is a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are not making creative work
The every other embodiment obtained under premise, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score,
Orientation or the position of the instruction such as "left", "right", " vertically ", " level ", " interior ", " outward " are closed
System, for based on orientation shown in the drawings or position relationship, is for only for ease of the description present invention and Jian
Change describe rather than instruction or the hint device of indication or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally,
Term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicate
Or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited,
Term " is installed ", " being connected ", " connection " should be interpreted broadly, for example, it may be solid
Fixed connection, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, also
It can be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, can have
Body situation understands above-mentioned term concrete meaning in the present invention.
Below by specific embodiment and combine accompanying drawing and the present invention is done further in detail
Describe.
See Fig. 1 and Fig. 2, the external anti-blow valve rod mechanism of one that the embodiment of the present invention provides
Ball valve, including valve gap 1, valve seat 2, valve body 3, support shaft 4, spheroid 5, valve rod 6, fills out
Material letter 7, filler 8, gland 9, anti-blow gland 10, friction plate 11 and screw 12；
Wherein, in described valve body 3, it is provided with spheroid 5；Arrange in the both sides of described valve body 3
There is valve gap 1；Fluid media (medium) import and fluid media (medium) outlet it is respectively equipped with on two described valve gaps 1
(the left side mouth in the most such as Fig. 1 is fluid media (medium) import, and right side mouth is fluid media (medium) outlet)；
The lateral symmetry being positioned at described spheroid 5 arranges described valve seat 2, described valve seat 2 movable sleeve
It is located in the endoporus that valve gap is corresponding；Described valve seat 2 end face is along the circumferential direction uniformly arranged multiple circle
Post spring 13, the described cylindrical spring 13 of pre-pressing is used for providing described valve seat 2 to described ball
The pretightning force of body 5；
The upper end of described spheroid 5 is provided with described valve rod 6, and described valve rod 6 is upwards fixedly installed on
On described valve body 3；And the lower end of described spheroid 5 is provided with described support shaft 4；Described support
Axle 4 is fixed on below valve body 3；Described valve body 3 is provided above described stuffing-box 7, described in fill out
The endoporus of material letter adds filler；Described gland 9 compresses downwards described filler 8 for close through nut
The fluid media (medium) of envelope valve cavity；Described stuffing-box 7 upper surface arranges anti-blow gland 10,
Described anti-blow gland 10 is fixed on the upper surface of stuffing-box 7 with screw 12；
Described valve rod 6 top is provided with shoulder A, and described shoulder A arranges friction plate 11, institute
State friction plate 11 to be clipped between the shoulder A of described valve rod and described anti-blow gland 10.
It should be noted that the present invention includes valve body 3, the spheroid 5 being arranged in valve body 3,
The both sides of valve body 3 are provided with valve gap 1, two valve gaps 1 are respectively equipped with fluid media (medium) import and go out
Mouth passage (such as: a left side is entered the right side and gone out)；Spheroid 5 lateral symmetry arranges valve seat 2, and valve seat 2 is lived
In the dynamic endoporus being sheathed on valve gap 1 correspondence, valve seat external cylindrical surface is provided with rubber seal and installs
Groove, O type rubber seal 14 is inlayed in this groove, constitutes with valve body 3 and seals；Valve seat 2 end
Face is along the circumferential direction uniformly arranged multiple cylindrical spring 13, and the cylindrical spring 13 of pre-pressing provides
The valve seat 2 pretightning force to spheroid 5.The upper end of described spheroid 5 is provided with valve rod 6, valve rod 6 to
On be fixedly installed on valve body 3, the lower end of spheroid 5 is provided with support shaft 4, and support shaft 4 is solid
Below valve body 3, valve body 3 is provided above stuffing-box 7, stuffing-box 7 endoporus filled 8,
Gland 9 compresses downwards the filler 8 fluid media (medium) with sealed valve inner chamber through nut.Stuffing-box 7
Upper surface arranges anti-blow gland 10, and anti-blow gland 10 is screwed at stuffing-box 7
Upper surface.Valve rod 6 top is machined with shoulder, shoulder arranges friction plate 11 (2), rubs
Pad 11 is clipped between valve rod shoulder and anti-blow gland 10.
Valve cavity pressure makes valve rod 6 generation upward pressure, this pressure compaction friction plate 11,
Friction plate 11 top abuts anti-blow gland 10, valve rod 6, friction plate 11 and anti-blow gland
10 rub when valve rotates, and user can check these three parts the most intuitively
Duty；If friction generation heat energy makes this three parts sintering, screw can be taken out
12 unload anti-blow gland 10, the most more renewal of facing renewal 11.
It should be noted that the technical scheme is that a kind of novel valve rod of structure is anti-blow
Mechanism, can be by anti-blow for valve rod mechanism from valve cavity moves to valve body.This novel valve
The anti-blow mechanism of bar relative to traditional anti-blow mechanism structure of valve rod add one anti-blow
Gland.
Concrete knot to the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides below
Structure and concrete technique effect do and describe in detail:
Preferably, can embodiment as one；Described anti-blow gland 10 specifically includes pressure
Cannula portion and be positioned at the outer edge of bottom of described pressure cannula portion；
Being provided with through hole at the top center of described pressure cannula portion, the through hole of described pressure cannula portion is used
In through described valve rod 6；Multiple screwed hole it is provided with on the surface of described outer edge, described anti-
Described screwed hole on blowout gland 10 is for through described screw 12.
Preferably, can embodiment as one；Arrange at the top outer rim of described stuffing-box 7
There is multiple screwed hole；Described screwed hole on described stuffing-box 7 is for through described screw 12.
Preferably, can embodiment as one；Screwed hole on described anti-blow gland 10
With the screwed hole position one_to_one corresponding on described stuffing-box 7.
It should be noted that the position relationship analyzed between above structure and layout relationship can
Know: screwed hole to be provided with on the most described anti-blow gland 10, and at described stuffing-box
On the screwed hole being also equipped with on 7 on screwed hole, and anti-blow gland 10 and stuffing-box 7
Screwed hole position one_to_one corresponding, so can realize anti-blow gland 10 through screw 12 and fill out
Fixing connection between material letter 7.
Preferably, can embodiment as one；Described anti-blow gland is stainless steel structure
Part.
It should be noted that above-mentioned anti-blow gland 10 primarily serves covers gland 9, friction
The top of sheet 11 and valve rod 6 is graded structure；This anti-blow gland 10 screw 12 overlaps
If being fixed on the upper surface of stuffing-box 7, and then it is independently arranged an outer chamber；I.e. prevent blowing
Go out gland 10 by above-mentioned valve rod 6, the shoulder A on valve rod 6 top and friction plate 11 all quilt covers
At a single outer intracavity, so have only to dismantle anti-blow gland 10 and just can check and rub
Sintering situation between the abrasion condition of pad 11 and three parts；Need not again by whole
The dismounting of machine valve carries out maintenance and changes.
Owing to above-mentioned anti-blow gland 10 is chronically exposed to the outside of ball valve, therefore it preferably makes
More particularly suitable with the erosion-resisting stainless anti-blow gland of rust-proofing.
Preferably, can embodiment as one；Described friction plate 11 is antifriction alloy sheet；
Described friction plate is two panels.
It should be noted that above-mentioned friction plate 11 can use multiple version, but excellent
Choosing uses as antifriction alloy sheet；This antifriction alloy sheet is specially nickel-base alloy sheet, cobalt-base alloys
Sheet；
This cobalt-base alloys, is that a kind of all kinds that are resistant to are worn and torn and corrode and high-temperature oxydation
Hard alloy.Different according to composition in alloy, they can make welding wire, and powder is for hard
Surface build-up welding, the technique such as thermal spraying, surfacing, it is also possible to make forge piece and metallic sintered products.
Cobalt-base alloys, has higher intensity, good thermal fatigue resistance, corrosion and heat resistant and erosion resistant
Performance, and have preferable weldability.Be suitable to make aero-jet engine, industrial combustion gas wheel
Machine, the guide vane of Vessel personnel and nozzle guide vane and diesel nozzeles etc..Cobalt-based
Alloy has good hot corrosion resistance and oxidation resistance.Owing to cobalt-base alloys has super
Strong abrasion resistance properties, therefore it is selected as the external anti-blow valve rod mechanism ball of the present invention
Friction plate in valve arrangement is most suitable.
Nickel-base alloy refers to have higher intensity to resist with certain under 650～1000 DEG C of high temperature
One class alloy of the combination properties such as oxide etch ability.It is subdivided into Ni-based according to main performance
Heat-resisting alloy, abros, nickel-base antiwear alloy, Ni-based Precise Alloy and Ni-based shape
Shape memory alloys etc..
Nickel-base alloy, its main alloy element is chromium, molybdenum, tungsten, possibly together with a small amount of niobium,
Tantalum and indium.In addition to there is anti-wear performance, its antioxidation, corrosion-resistant, welding performance.
Wear-resisting spare part can be manufactured, it is possible to as covering material, by built-up welding and spraying coating process by it
It is coated on other substrate material surfaces.Also there is superpower mar proof due to nickel-base alloy
Can, therefore it is it is also preferred that as in the external anti-blow valve rod mechanism ball-valve structure of the present invention
Friction plate.
Preferably, can embodiment as one；Described stuffing-box is stainless steel structure part.
Preferably, can embodiment as one；Described filler be flexible graphite structure part or
It it is PTFE structural member.
It should be noted that valve stuffing box has another name called stuffing box, it is simply that the sealing of valve stem part
Device.Prevent the medium such as gas, liquid material from spilling.Valve stuffing box mainly by filler,
Packing ring, the structure such as gland composition.The effect of stuffing-box primarily to close stuffing-box with
Space between valve rod, does not allow the fluid media (medium) in valve body not flow to outside and not allow outside
Air enter in valve body.Filler has fabric, rubber, engineering plastics and metal material
Material etc., primarily serve filling and sealing function；External anti-blow valve rod mechanism in the present invention
In ball-valve structure, its filler is preferably used flexible graphite structure part or PTFE structural member (i.e.
Politef)；This politef effect filler is also very suitable for；Politef
(Polytetrafluoroethylene is abbreviated as PTFE.This material has antiacid anti-
Alkali, the feature of anti-various organic solvents；Meanwhile, PTFE structural member has stronger wear-resisting
The feature such as property, heat-resisting quantity, corrosion resistance.Specifically, heat-resisting quantity makes recruitment
250 DEG C are reached as temperature.Corrosion resistance, to most of chemical drugss and solvent, shows
Inertia, energy strong alkali-acid resistance, water and various organic solvent.
Preferably, can embodiment as one；The external cylindrical surface of described valve seat 2 is provided with
Rubber seal mounting groove；Described rubber seal mounting groove is inlayed and is provided with O type rubber
Sealing ring 14；Described O type rubber seal 14 and described valve body 3 constitute sealing structure.
Preferably, can embodiment as one；Described O type rubber seal 14 is specially
Viton seal ring, silicone rubber O-ring, teflin ring.
It should be noted that O type rubber seal is positioned in rubber seal mounting groove and inlays
Install；This O type rubber seal 14 can be formed with valve body 3 composition and seal knot closely
Structure, and then realize certain sealing function.This O type rubber seal can select to use multiple
Version, such as: viton seal ring, silicone rubber O-ring, teflon seal
Circle, neoprene packing circle, nitrile rubber sealing ring etc. are multiple；Find through research,
Select viton seal ring, silicone rubber O-ring, teflin ring these three main
Ring structure；
One, silicone rubber O-ring: silicone rubber O-ring, has prominent resistant of high or low temperature
Can, the use keeping good within the temperature range of-70 DEG C-+260 DEG C is elastic, and has resistance to smelly
The advantage such as oxygen, Weather-resistant, preferably makees the sealing ring in thermomechanical.Because of can without any toxicity
Make adiabatic, insulated product and druggist rubber sundrier.Product can meet oil resistant, resistance to steam,
All-transparent medical, edible, high intensity, fire-retardant, conductive silicon rubber etc..
Two, viton seal ring: viton seal ring, has heat-resisting quantity, can be at-30 DEG C
-+250 DEG C of environment use, powerful oxidation corrosion resistance agent, oil resistant, acid and alkali-resistance.It is generally used for high temperature,
In fine vacuum and environment under high pressure, it is suitable for oils environment.Owing to having the property of various excellence
Can, fluorubber is widely used in the departments such as oil, chemical industry, Aeronautics and Astronautics.Fluorubber is close
Seal, can fuel oil resistance, high temperature resistant, freon, resistance to superheated water, steam and fabulous resistance to
Chemical corrosivity.
Three, teflin ring: teflin ring has corruption high temperature resistant, anti-
Erosion property, and product is wear-resisting, flexural property is good, the most at high temperature with concentrated acid, alkali or strong oxygen
Agent is not had an effect, and it has been widely used as encapsulant, it is adaptable to pipe
Sealing device on road, flange, reactor, valve and container.
It will be apparent that the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides mainly has
The technical advantage of following aspect:
1, the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, it can be directly perceived
Understand anti-blow mechanism duty；The friction plate of external anti-blow valve rod mechanism, valve rod
Shoulder and anti-blow pressing plate are all exposed to outside valve body, form independent work structuring；Such one
Carry out user and can get information about its duty, such as rotate motility, whether sinter stuck
Deng；
2, the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, its friction plate is more
Change convenient and swift；If find friction disc wear, sinter stuck, it is not necessary to decompose valve, it is possible to
Renewal part (i.e. the most replaceable friction plate of anti-blow gland under dismounting) in vitro.
3, the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, which simplify valve
Door internal structure, eliminates processing capacity and the valve assembly work amount of the corresponding parts such as valve body, enters
And saved the production cost of valve.
In sum, the external anti-blow valve rod mechanism ball valve that the embodiment of the present invention provides, have
All many technical advantages.Therefore its will bring good social benefit, market prospect and
Economic benefit.
It is last it is noted that various embodiments above is only in order to illustrate technical scheme,
It is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments,
It will be understood by those within the art that: it still can be to described in foregoing embodiments
Technical scheme modify, or the most some or all of technical characteristic carried out equivalent replace
Change；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the present invention each
The scope of embodiment technical scheme.
Claims (10)
1. an external anti-blow valve rod mechanism ball valve, it is characterised in that include valve gap,
Valve seat, valve body, support shaft, spheroid, valve rod, stuffing-box, filler, gland, anti-blow pressure
Set, friction plate and screw；
Wherein, in described valve body, it is provided with spheroid；The both sides of described valve body are provided with valve gap；
Fluid media (medium) import and fluid media (medium) outlet it is respectively equipped with on two described valve gaps；
The lateral symmetry being positioned at described spheroid arranges described valve seat, and described valve seat is movably set in valve
In the endoporus that lid is corresponding；Described valve seat end face is along the circumferential direction uniformly arranged multiple cylindrical spring,
The described cylindrical spring of pre-pressing is for providing the described valve seat pretightning force to described spheroid；
The upper end of described spheroid is provided with described valve rod, and described valve rod is upwards fixedly installed on described valve
On body；And the lower end of described spheroid is provided with described support shaft；Described support shaft is fixed on valve body
Lower section；Described valve body is provided above described stuffing-box, and the endoporus of described stuffing-box adds filler；
Described gland compresses downwards the described filler fluid media (medium) for sealed valve inner chamber through nut；Institute
Stating stuffing-box upper surface and arrange anti-blow gland, described anti-blow gland is screwed at filler
The upper surface of letter；
Described valve rod top is provided with shoulder, and described shoulder arranges friction plate, described friction plate
It is clipped between the shoulder of described valve rod and described anti-blow gland.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
Described anti-blow gland specifically includes pressure cannula portion and is positioned at the bottom of described pressure cannula portion
Outer edge；
Being provided with through hole at the top center of described pressure cannula portion, the through hole of described pressure cannula portion is used
In through described valve rod；It is provided with multiple screwed hole on the surface of described outer edge, described anti-blows
Go out the described screwed hole on gland for through described screw.
External anti-blow valve rod mechanism ball valve the most according to claim 2, its feature exists
In,
It is provided with multiple screwed hole at the top outer rim of described stuffing-box；Institute on described stuffing-box
State screwed hole for through described screw.
External anti-blow valve rod mechanism ball valve the most according to claim 3, its feature exists
In,
Screwed hole on described anti-blow gland is with the screwed hole position on described stuffing-box one by one
Corresponding.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
Described anti-blow gland is stainless steel structure part.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
Described friction plate is antifriction alloy sheet；Described friction plate is two panels.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
Described stuffing-box is stainless steel structure part.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
Described filler is flexible graphite structure part or PTFE structural member.
External anti-blow valve rod mechanism ball valve the most according to claim 1, its feature exists
In,
The external cylindrical surface of described valve seat is provided with rubber seal mounting groove；Described rubber seal
Mounting groove is inlayed and is provided with O type rubber seal；Described O type rubber seal and described valve
Body constitutes sealing structure.
External anti-blow valve rod mechanism ball valve the most according to claim 9, its feature exists
In,
Described O type rubber seal be specially viton seal ring, silicone rubber O-ring, poly-four
Fluorothene sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514533.0A CN105889553A (en) | 2016-07-04 | 2016-07-04 | Ball valve with external mechanism for preventing valve rod from being blown out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610514533.0A CN105889553A (en) | 2016-07-04 | 2016-07-04 | Ball valve with external mechanism for preventing valve rod from being blown out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105889553A true CN105889553A (en) | 2016-08-24 |
Family
ID=56718574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610514533.0A Pending CN105889553A (en) | 2016-07-04 | 2016-07-04 | Ball valve with external mechanism for preventing valve rod from being blown out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105889553A (en) |
Citations (7)
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| CH321640A (en) * | 1953-07-10 | 1957-05-15 | Neue Argus Ges Mbh | Stopcock with rotatable, drilled, spherical shut-off body |
| GB2186951A (en) * | 1986-02-21 | 1987-08-26 | Fip Formatura Inienzione Poli | Rotary valve |
| CN103672009A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Forged high-differential-pressure noise-reduction V-shaped regulating ball valve |
| CN105318036A (en) * | 2015-12-15 | 2016-02-10 | 岳阳东方自控工程设备有限公司 | Magnetic thrust bearing valve |
| CN105370913A (en) * | 2015-12-16 | 2016-03-02 | 苏州工业园区思达德阀门有限公司 | Floating ball valve dedicated to high-pressure steam |
| CN105422900A (en) * | 2015-12-15 | 2016-03-23 | 岳阳东方自控工程设备有限公司 | Ball valve with non-contact valve ball and valve seats during rotation |
| CN205859205U (en) * | 2016-07-04 | 2017-01-04 | 岳阳东方自控工程设备有限公司 | External anti-blow valve rod mechanism ball valve |
-
2016
- 2016-07-04 CN CN201610514533.0A patent/CN105889553A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH321640A (en) * | 1953-07-10 | 1957-05-15 | Neue Argus Ges Mbh | Stopcock with rotatable, drilled, spherical shut-off body |
| GB2186951A (en) * | 1986-02-21 | 1987-08-26 | Fip Formatura Inienzione Poli | Rotary valve |
| CN103672009A (en) * | 2013-11-30 | 2014-03-26 | 无锡智能自控工程股份有限公司 | Forged high-differential-pressure noise-reduction V-shaped regulating ball valve |
| CN105318036A (en) * | 2015-12-15 | 2016-02-10 | 岳阳东方自控工程设备有限公司 | Magnetic thrust bearing valve |
| CN105422900A (en) * | 2015-12-15 | 2016-03-23 | 岳阳东方自控工程设备有限公司 | Ball valve with non-contact valve ball and valve seats during rotation |
| CN105370913A (en) * | 2015-12-16 | 2016-03-02 | 苏州工业园区思达德阀门有限公司 | Floating ball valve dedicated to high-pressure steam |
| CN205859205U (en) * | 2016-07-04 | 2017-01-04 | 岳阳东方自控工程设备有限公司 | External anti-blow valve rod mechanism ball valve |
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Application publication date: 20160824 |
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