CN106321880A - Sealing structure for seal valve - Google Patents
Sealing structure for seal valve Download PDFInfo
- Publication number
- CN106321880A CN106321880A CN201610956603.8A CN201610956603A CN106321880A CN 106321880 A CN106321880 A CN 106321880A CN 201610956603 A CN201610956603 A CN 201610956603A CN 106321880 A CN106321880 A CN 106321880A
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- CN
- China
- Prior art keywords
- sealing ring
- holder
- sealing
- spool
- annular groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16K5/0689—Packings between housing and plug
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Surgical Instruments (AREA)
- Valve Housings (AREA)
Abstract
The invention provides a sealing structure for a seal valve. The seal valve comprises a valve core, a valve body and a fixing device arranged between the valve core and the valve body. The sealing structure comprises a sealing ring arranged between the fixing device and the valve core in the vertical direction and clamped in an annular groove in a cavity of the fixing device; the sealing ring deflects towards the valve core and in seal joint with the valve core; the sealing ring is in interference fit with the annular groove, and an exhaust groove for exhausting air in the annular groove during mounting of the sealing ring is formed between an inner ring of the sealing ring and the annular groove.
Description
Technical field
The present invention relates to ball valve sealing technical field, be specifically related to a kind of for sealing the sealing structure that valve seals.
Background technology
Ball valve defined in " valve term " is being: opening and closing element (spheroid) is driven by valve rod, and makees to rotate fortune around ball valve axis
Dynamic valve, is mainly used to make the flow direction cutting off, distribute and changing medium, and it has only to the operation and very of use 90-degree rotation
Little rotating torque just can be closed tight.And sealing ring is the important component part of ball valve, it is arranged between valve seat and spheroid anti-
The only sealing member of the dielectric leakage in ball valve.
The patent documentation of prior art such as Publication No. CN201034183 discloses a kind of soft seal valve seat of fixed ball valve knot
Structure, as shown in Figure 10, it includes valve seat body, and the end face of described valve seat body nearly spheroid side axially offers closure gasket groove, ring
Soft seal ring 14 it is provided with in groove；Having steam vent 15 at the bottom land of described closure gasket groove, this steam vent 15 is communicated to valve seat originally
Body and the gap location of valve body.
The steam vent of above-mentioned ball valve is arranged on the outer shroud of soft seal ring, and the additional air during assembling is solid by being arranged on
Determine steam vent on device to discharge, and ball valve mainly internal ring and side plane by sealing ring realizes with the extruding of holder closure gasket groove
Seal.In use, medium can pass sequentially through the internal ring of soft seal ring, side plane and outer shroud and leak, actually used
Medium can produce a vertical outside extruding force to sealing ring internal ring, is unfavorable for sealing ring internal ring and holder slot inner radius
Sealing, and outer shroud has relief hole, it is impossible to seal, and can realize sealing effectiveness only remains side plane, accelerates the leakage of medium.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is to overcome in prior art ball valve seal ring in medium power effect
Under, the sealing surface between internal ring and the holder of sealing ring easily produces the problem of leakage, as it is shown in figure 9, medium can lead to successively
Cross the internal ring of sealing ring, seal side and outer shroud to leak, thus provide a kind of for sealing the sealing structure that valve seals,
Described sealing valve includes: spool, valve body, and is arranged on the holder between described spool and valve body；Described sealing
Structure includes:
Sealing ring, the vertical direction between described holder and spool arranges, is connected to the ring of described holder inner chamber
In connected in star；Described sealing ring towards the biasing of described spool and engages with described seal spool；
Described sealing ring and described annular groove interference fit, be provided with between its internal ring and described annular groove in peace
The air discharge duct of air in discharge ring connected in star during dress sealing ring.
Described air discharge duct is arranged on described holder；
The inlet end of described air discharge duct is arranged on described annular groove one end away from described spool, and exhaust end is communicated to institute
State the gap location of holder and spool.
Described air discharge duct includes: first row air drain, and described first row air drain is vertical with the plane residing for described annular groove
Arrange.
Described air discharge duct includes: second row air drain, and described second row air drain is parallel with the plane residing for described annular groove
Arrange.
Described air discharge duct includes: the 3rd air discharge duct being arranged on described sealing ring, and described 3rd air discharge duct is arranged on institute
State the internal ring of sealing ring, be communicated to the gap location of described holder and spool.
Described spool is the spool of spherical valve core or writing board shape.
The chamfering that the internal ring of described sealing ring is provided with away from one end of described spool, is used for realizing sealing ring and annular groove
Installation.
The described annular groove being arranged on described holder is provided with the draw-in groove being connected with described sealing ring clamping, described card
Groove is arranged on the upper surface of described annular groove inner chamber and away from one end of described spool；
During assembling, described sealing ring generation plastic deformation is connected in described clamping groove.
First step and second step is formed on described holder；
Described first step is provided with elastic component, one end of described elastic component and the shoulder of described first step against, another
One end and described valve body against；
The locating surface being equipped with described second step it is provided with in described valve body；
Graphite rope and sealing ring it is provided with between described holder and valve body.
A kind of valve body, including spool, valve body, and is arranged on the holder between described spool and valve body, also includes above-mentioned
Sealing structure according to any one of content.
Above-mentioned sealing ring in the horizontal direction both sides of spool and is vertically arranged, and its internal ring is the interior ring of sealing ring
Shape face, outer shroud are the outer ring ring surface of sealing ring.
Technical solution of the present invention, has the advantage that
1. the sealing structure sealing valve that the present invention provides, sealing ring is arranged in the annular groove of holder inner chamber, and
Sealing engagement is biased, the advantage with the sealing effectiveness of sealing ring and holder fixation, lift-off seal ring towards spool.
2. the sealing ring that the present invention provides, air discharge duct is arranged on the internal ring of sealing ring, and medium relies primarily on outside sealing ring
Ring, side plane are connected the sealing surface of composition and seal with the groove fit of holder.Due to the internal ring of sealing ring and consolidating of holder
Determining the medium of meeting depositing dosed quantities between groove lower surface, medium can produce the medium power of cattle thousand of the most up to ten thousand outwardly.Medium
Power can be respectively increased the extruding force between the outer shroud of sealing ring and holder and between side plane and holder, strengthens close
The sealability of seal ring.
3. the sealing ring that the present invention provides, air discharge duct is arranged on described holder, and the inlet end of air discharge duct is arranged
At annular groove away from one end of described spheroid, the gas in annular groove is all discharged by air discharge duct；The aerofluxus of air discharge duct
End is communicated to the gap location of described holder and spheroid, if the medium in ball valve can be by air discharge duct in entering air discharge duct
Exhaust duct flows back in ball valve, will not flow to the seal face of the outer shroud of sealing ring, and then affect the seal of ball valve.
4. the sealing ring that the present invention provides, air discharge duct is arranged on described sealing ring, is communicated to described holder and spheroid
Gap location, have easy to process, production cost is low and the advantage of good exhaust effect.
5. the sealing ring that the present invention provides, the chamfering being only provided with away from one end of described spool at the internal ring of sealing ring, use
In realizing the installation of sealing ring and annular groove, eliminate the chamfering being arranged on sealing ring outer shroud, it is ensured that produce at sealing ring
There are enough materials can fill up in the draw-in groove of holder annular groove upper surface during plastic deformation, the sealing effect of lift-off seal ring
Really.
6. the sealing ring that the present invention provides, the annular groove upper surface on holder is provided with and is connected with sealing ring extruding clamping
Draw-in groove, draw-in groove is arranged on annular groove upper surface, prevent sealing ring in use from closure gasket groove deviate from, it is ensured that close
The outer shroud of seal ring closely cooperates with annular groove and is connected, and improves the sealing effectiveness of sealing ring.
7. the sealing ring that the present invention provides, the first step of holder is provided with elastic component, and the elastic force of elastic component is used for carrying
For the pretightning force sealed between holder and spheroid, improve the sealing effectiveness of sealing ring.
8. the sealing ring that the present invention provides, the second step of holder is connected with valve body clamping, holder and valve body it
Between formed one section of locating surface fitted tightly, the position between holder and valve body can be efficiently controlled, it is ensured that sealing effectiveness.
9. the sealing ring that the present invention provides, is provided with graphite rope and sealing ring between holder and valve body, graphite rope is nonmetal
Sealing member catches fire and played sealing function when losing efficacy, it is achieved the fire protecting performance of valve, sealing ring prevent medium from holder and valve body
Between leak.
10. the sealing ring that the present invention provides, the joint face of annular groove and sealing ring reduces it by grinding, glossing
Roughness, improves the sealing effectiveness of sealing ring.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, below will be to specifically
In embodiment or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, in describing below
Accompanying drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The globe valve sectional view being provided with sealing ring that Fig. 1 provides for the present invention；
Fig. 2 is the close-up schematic view of part A in the globe valve shown in Fig. 1；
The setting that Fig. 3 provides for present invention first row air drain structural representation on the holder；
The setting that Fig. 4 provides for present invention second row air drain structural representation on the holder；
The sealing ring being provided with the 3rd air discharge duct that Fig. 5 provides for the present invention assembles schematic diagram with holder；
Fig. 6 is the sealing ring cross sectional representation shown in Fig. 5；
The annular groove being provided with draw-in groove that Fig. 7 provides for the present invention and the assembling schematic diagram of sealing ring；
The structural representation of the plate shaped gate valve sealing structure that Fig. 8 provides for the present invention；
The layout that the medium that Fig. 9 provides for the present invention is leaked by sealing ring and holder clearance channel；
Figure 10 is soft seal ring and the steam vent position view of prior art；
Description of reference numerals:
1-spool；2-valve body；3-holder；4-sealing ring；5-first row air drain；6-second row air drain；7-the 3rd aerofluxus
Groove；8-chamfering；9-draw-in groove；10-elastic component；11-locating surface；12-graphite rope；13-sealing ring；14-soft seal ring；15-aerofluxus
Hole；
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that described enforcement
Example is a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under not making creative work 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, "left", "right", " vertically ",
Orientation or the position relationship of the instruction such as " level ", " interior ", " outward " they are based on orientation shown in the drawings or position relationship, merely to
Be easy to describe the present invention and simplifying 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 " is 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 ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
If additionally, the most non-structure of technical characteristic involved in invention described below difference embodiment
Become conflict just can be combined with each other.
Embodiment 1
Independent claims 1 describe a kind of for sealing the sealing structure that valve seals,
As it is shown in figure 1, described sealing valve includes: spool 1, valve body 2, and it is arranged on consolidating between described spool 1 and valve body 2
Determining device 3, above-mentioned spool 1 is spherical valve core；Described sealing structure includes:
As in figure 2 it is shown, sealing ring 4, the vertical direction between described holder 3 and spool 1 arranges, is connected to described solid
Determine in the annular groove of device 3 inner chamber；Described sealing ring 4 bias towards described spool 1 and with described spool 1 sealing engagement；
Described sealing ring 4 and described annular groove interference fit, be provided with between its internal ring and described annular groove for
The air discharge duct of air in discharge ring connected in star during installation sealing ring 4.
Above-mentioned sealing ring is arranged in the annular groove of holder inner chamber, and biases sealing engagement, tool towards spherical valve core
The advantage having the sealing effectiveness of sealing ring and holder fixation, lift-off seal ring.
Above-mentioned air discharge duct is arranged on the internal ring of sealing ring, and medium relies primarily on the outer shroud of sealing ring, side plane and holder
Groove fit connect composition sealing surface seal.Owing to can sink between internal ring and the fixing groove lower surface of holder of sealing ring
Long-pending a certain amount of medium, medium can produce the medium power of cattle thousand of the most up to ten thousand outwardly.Medium power can be respectively increased sealing
Extruding force between outer shroud and the holder of ring and between side plane and holder, strengthens the sealability of sealing ring.
Specifically, as it is shown on figure 3, described air discharge duct is arranged on described holder 3；
The inlet end of described air discharge duct is arranged on described annular groove one end away from described spool 1, and exhaust end is communicated to
Described holder 3 and the gap location of spool 1.
Above-mentioned air discharge duct is arranged on described holder, and the inlet end of air discharge duct is arranged on annular groove away from described
One end of spheroid, the gas in annular groove is all discharged by air discharge duct；The exhaust end of air discharge duct is communicated to described holder
With the gap location of spheroid, if the medium in ball valve enters, air discharge duct is interior can be flowed back to seal valve by the exhaust duct in air discharge duct
In, the seal face of the upper surface of sealing ring will not be flowed to, and then affect the seal of ball valve.
Specifically, as it is shown on figure 3, described air discharge duct includes: first row air drain 5, described first row air drain 5 and described annular
Plane residing for groove is vertically arranged.
Above-mentioned air discharge duct is vertically arranged, it is simple to medium flows back to seal in valve by exhaust duct, has good exhaust effect simultaneously
Advantage.
Specifically, as it is shown in fig. 7, the chamfering 8 that the internal ring of described sealing ring 4 is provided with away from one end of described spool 1, it is used for
Realize the installation of sealing ring 4 and annular groove.
Above-mentioned sealing ring, the chamfering being only provided with away from one end of described spool at the internal ring of sealing ring, it is used for realizing sealing
Ring and the installation of annular groove, eliminate the chamfering being arranged on sealing ring outer shroud, it is ensured that when sealing ring produces plastic deformation
There are enough materials can fill up in the draw-in groove of holder annular groove upper surface, the sealing effectiveness of lift-off seal ring.
Specifically, as it is shown in fig. 7, the described annular groove being arranged on described holder 3 is provided with blocks with described sealing ring 4
Connecing connected draw-in groove 9, described draw-in groove 9 is arranged on the upper surface of described annular groove inner chamber and away from one end of described spool 1；
During assembling, described sealing ring 4 occurs plastic deformation to be connected in described clamping groove 9.
Annular groove upper surface on above-mentioned holder is provided with the draw-in groove being connected with sealing ring extruding clamping, and draw-in groove is arranged on
Annular groove upper surface, prevents sealing ring from use deviating from from closure gasket groove, it is ensured that the outer shroud of sealing ring and annular
Groove closely cooperates connected, improves the sealing effectiveness of sealing ring.
Specifically, as in figure 2 it is shown, form first step and second step on described holder 3；
Described first step is provided with elastic component 10, and one end of described elastic component 10 is supported with the shoulder of described first step
Lean on, the other end and described valve body 2 against；
The locating surface 11 being equipped with described second step it is provided with in described valve body 2.
The first step of above-mentioned holder is provided with elastic component, and the elastic force of elastic component is used for providing close between holder and spheroid
The pretightning force of envelope, improves the sealing effectiveness of sealing ring.
The second step of above-mentioned holder is connected with valve body clamping, forms one section and fit tightly between holder and valve body
Locating surface, the position between holder and valve body can be efficiently controlled, it is ensured that sealing effectiveness.
Specifically, as in figure 2 it is shown, be provided with graphite rope 12 and sealing ring 13 between described holder 3 and valve body 2.
Being provided with graphite rope and sealing ring between above-mentioned holder and valve body, graphite rope rises when non-metallic seal catches fire inefficacy
To sealing function, it is achieved the fire protecting performance of valve, sealing ring prevent medium from leaking between holder and valve body.
Embodiment 2
As it is shown in figure 1, described sealing valve includes: spool 1, valve body 2, and it is arranged on consolidating between described spool 1 and valve body 2
Determining device 3, above-mentioned spool 1 is spherical valve core；Described sealing structure includes:
As in figure 2 it is shown, sealing ring 4, the vertical direction between described holder 3 and spool 1 arranges, is connected to described solid
Determine in the annular groove of device 3 inner chamber；Described sealing ring 4 bias towards described spool 1 and with described spool 1 sealing engagement；
Described sealing ring 4 and described annular groove interference fit, be provided with between its internal ring and described annular groove for
The air discharge duct of air in discharge ring connected in star during installation sealing ring 4.
Above-mentioned sealing ring is arranged in the annular groove of holder inner chamber, and biases sealing engagement, tool towards spherical valve core
The advantage having the sealing effectiveness of sealing ring and holder fixation, lift-off seal ring.
Above-mentioned air discharge duct is arranged on the internal ring of sealing ring, and medium relies primarily on the outer shroud of sealing ring, side plane and holder
Groove fit connect composition sealing surface seal.Owing to can sink between internal ring and the fixing groove lower surface of holder of sealing ring
Long-pending a certain amount of medium, medium can produce the medium power of cattle thousand of the most up to ten thousand outwardly.Medium power can be respectively increased sealing
Extruding force between outer shroud and the holder of ring and between side plane and holder, strengthens the sealability of sealing ring.
Specifically, as it is shown on figure 3, described air discharge duct is arranged on described holder 3；
The inlet end of described air discharge duct is arranged on described annular groove one end away from described spool 1, and exhaust end is communicated to
Described holder 3 and the gap location of spool 1.
Above-mentioned air discharge duct is arranged on described holder, and the inlet end of air discharge duct is arranged on annular groove away from described
One end of spheroid, the gas in annular groove is all discharged by air discharge duct；The exhaust end of air discharge duct is communicated to described holder
With the gap location of spheroid, if the medium in ball valve enters, air discharge duct is interior can be flowed back to seal valve by the exhaust duct in air discharge duct
In, the seal face of the upper surface of sealing ring will not be flowed to, and then affect the seal of ball valve.
Specifically, as shown in Figure 4, described air discharge duct includes: second row air drain 6, described second row air drain 6 and described annular
Plane residing for groove be arranged in parallel.
Above-mentioned air discharge duct be arranged in parallel, the advantage with good exhaust effect.
Specifically, as it is shown in fig. 7, the chamfering 8 that the internal ring of described sealing ring 4 is provided with away from one end of described spool 1, it is used for
Realize the installation of sealing ring 4 and annular groove.
Above-mentioned sealing ring, the chamfering being only provided with away from one end of described spool at the internal ring of sealing ring, it is used for realizing sealing
Ring and the installation of annular groove, eliminate the chamfering being arranged on sealing ring outer shroud, it is ensured that when sealing ring produces plastic deformation
There are enough materials can fill up in the draw-in groove of holder annular groove upper surface, the sealing effectiveness of lift-off seal ring.
Specifically, as it is shown in fig. 7, the described annular groove being arranged on described holder 3 is provided with blocks with described sealing ring 4
Connecing connected draw-in groove 9, described draw-in groove 9 is arranged on the upper surface of described annular groove inner chamber and away from one end of described spool 1；
During assembling, described sealing ring 4 occurs plastic deformation to be connected in described clamping groove 9.
Annular groove upper surface on above-mentioned holder is provided with the draw-in groove being connected with sealing ring extruding clamping, and draw-in groove is arranged on
Annular groove upper surface, prevents sealing ring from use deviating from from closure gasket groove, it is ensured that the outer shroud of sealing ring and annular
Groove closely cooperates connected, improves the sealing effectiveness of sealing ring.
Specifically, as in figure 2 it is shown, form first step and second step on described holder 3；
Described first step is provided with elastic component 10, and one end of described elastic component 10 is supported with the shoulder of described first step
Lean on, the other end and described valve body 2 against；
The locating surface 11 being equipped with described second step it is provided with in described valve body 2.
The first step of above-mentioned holder is provided with elastic component, and the elastic force of elastic component is used for providing close between holder and spheroid
The pretightning force of envelope, improves the sealing effectiveness of sealing ring.
The second step of above-mentioned holder is connected with valve body clamping, forms one section and fit tightly between holder and valve body
Locating surface, the position between holder and valve body can be efficiently controlled, it is ensured that sealing effectiveness.
Specifically, as in figure 2 it is shown, be provided with graphite rope 12 and sealing ring 13 between described holder 3 and valve body 2.
Being provided with graphite rope and sealing ring between above-mentioned holder and valve body, graphite rope rises when non-metallic seal catches fire inefficacy
To sealing function, it is achieved the fire protecting performance of valve, sealing ring prevent medium from leaking between holder and valve body.
Embodiment 3
As it is shown in figure 1, described sealing valve includes: spool 1, valve body 2, and it is arranged on consolidating between described spool 1 and valve body 2
Determining device 3, above-mentioned spool 1 is spherical valve core；Described sealing structure includes:
As in figure 2 it is shown, sealing ring 4, the vertical direction between described holder 3 and spool 1 arranges, is connected to described solid
Determine in the annular groove of device 3 inner chamber；Described sealing ring 4 bias towards described spool 1 and with described spool 1 sealing engagement；
Described sealing ring 4 and described annular groove interference fit, be provided with between its internal ring and described annular groove for
The air discharge duct of air in discharge ring connected in star during installation sealing ring 4.
Above-mentioned sealing ring is arranged in the annular groove of holder inner chamber, and biases sealing engagement, tool towards spherical valve core
The advantage having the sealing effectiveness of sealing ring and holder fixation, lift-off seal ring.
Above-mentioned air discharge duct is arranged on the internal ring of sealing ring, and medium relies primarily on the outer shroud of sealing ring, side plane and holder
Groove fit connect composition sealing surface seal.Owing to can sink between internal ring and the fixing groove lower surface of holder of sealing ring
Long-pending a certain amount of medium, medium can produce the medium power of cattle thousand of the most up to ten thousand outwardly.Medium power can be respectively increased sealing
Extruding force between outer shroud and the holder of ring and between side plane and holder, strengthens the sealability of sealing ring.
Specifically, as shown in Figure 5 and Figure 6, described air discharge duct includes: be arranged on the 3rd air discharge duct on described sealing ring 4
7, described 3rd air discharge duct 7 is arranged on the internal ring of described sealing ring 4, is communicated to described holder 3 and the gap location of spool 1.
Above-mentioned air discharge duct is arranged on described sealing ring, is communicated to the gap location of described holder and spheroid, has processing
Convenient, production cost is low and the advantage of good exhaust effect.
Specifically, as it is shown in fig. 7, the chamfering 8 that the internal ring of described sealing ring 4 is provided with away from one end of described spool 1, it is used for
Realize the installation of sealing ring 4 and annular groove.
Above-mentioned sealing ring, the chamfering being only provided with away from one end of described spool at the internal ring of sealing ring, it is used for realizing sealing
Ring and the installation of annular groove, eliminate the chamfering being arranged on sealing ring outer shroud, it is ensured that when sealing ring produces plastic deformation
There are enough materials can fill up in the draw-in groove of holder annular groove upper surface, the sealing effectiveness of lift-off seal ring.
Specifically, as it is shown in fig. 7, the described annular groove being arranged on described holder 3 is provided with blocks with described sealing ring 4
Connecing connected draw-in groove 9, described draw-in groove 9 is arranged on the upper surface of described annular groove inner chamber and away from one end of described spool 1；
During assembling, described sealing ring 4 occurs plastic deformation to be connected in described clamping groove 9.
Annular groove upper surface on above-mentioned holder is provided with the draw-in groove being connected with sealing ring extruding clamping, and draw-in groove is arranged on
Annular groove upper surface, prevents sealing ring from use deviating from from closure gasket groove, it is ensured that the outer shroud of sealing ring and annular
Groove closely cooperates connected, improves the sealing effectiveness of sealing ring.
Specifically, as in figure 2 it is shown, form first step and second step on described holder 3；
Described first step is provided with elastic component 10, and one end of described elastic component 10 is supported with the shoulder of described first step
Lean on, the other end and described valve body 2 against；
The locating surface 11 being equipped with described second step it is provided with in described valve body 2.
The first step of above-mentioned holder is provided with elastic component, and the elastic force of elastic component is used for providing close between holder and spheroid
The pretightning force of envelope, improves the sealing effectiveness of sealing ring.
The second step of above-mentioned holder is connected with valve body clamping, forms one section and fit tightly between holder and valve body
Locating surface, the position between holder and valve body can be efficiently controlled, it is ensured that sealing effectiveness.
Embodiment 4
As it is shown in figure 1, described sealing valve includes: spool 1, valve body 2, and it is arranged on consolidating between described spool 1 and valve body 2
Determining device 3, above-mentioned spool 1 is the spool of writing board shape；Described sealing structure includes:
As in figure 2 it is shown, sealing ring 4, the vertical direction between described holder 3 and spool 1 arranges, is connected to described solid
Determine in the annular groove of device 3 inner chamber；Described sealing ring 4 bias towards described spool 1 and with described spool 1 sealing engagement；
Described sealing ring 4 and described annular groove interference fit, be provided with between its internal ring and described annular groove for
The air discharge duct of air in discharge ring connected in star during installation sealing ring 4.
Above-mentioned sealing ring is arranged in the annular groove of holder inner chamber, and towards writing board shape spool bias sealing connect
Close, the advantage with the sealing effectiveness of sealing ring and holder fixation, lift-off seal ring.
Above-mentioned air discharge duct is arranged on the internal ring of sealing ring, and medium relies primarily on the outer shroud of sealing ring, side plane and holder
Groove fit connect composition sealing surface seal.Owing to can sink between internal ring and the fixing groove lower surface of holder of sealing ring
Long-pending a certain amount of medium, medium can produce the medium power of cattle thousand of the most up to ten thousand outwardly.Medium power can be respectively increased sealing
Extruding force between outer shroud and the holder of ring and between side plane and holder, strengthens the sealability of sealing ring.
Specifically, as it is shown on figure 3, described air discharge duct is arranged on described holder 3；
The inlet end of described air discharge duct is arranged on described annular groove one end away from described spool 1, and exhaust end is communicated to
Described holder 3 and the gap location of spool 1.
Above-mentioned air discharge duct is arranged on described holder, and the inlet end of air discharge duct is arranged on annular groove away from described
One end of spheroid, the gas in annular groove is all discharged by air discharge duct；The exhaust end of air discharge duct is communicated to described holder
With the gap location of spheroid, if the medium in ball valve enters, air discharge duct is interior can be flowed back to seal valve by the exhaust duct in air discharge duct
In, the seal face of the upper surface of sealing ring will not be flowed to, and then affect the seal of ball valve.
Specifically, as it is shown on figure 3, described air discharge duct includes: first row air drain 5, described first row air drain 5 and described annular
Plane residing for groove is vertically arranged.
Above-mentioned air discharge duct is vertically arranged, it is simple to medium flows back to seal in valve by exhaust duct, has good exhaust effect simultaneously
Advantage.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.Right
For those of ordinary skill in the field, can also make on the basis of the above description other multi-form change or
Variation.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (10)
1., for sealing the sealing structure that valve seals, described sealing valve includes: spool (1), valve body (2), and is arranged on
Holder (3) between described spool (1) and valve body (2)；It is characterized in that, described sealing structure includes:
Sealing ring (4), the vertical direction between described holder (3) and spool (1) arranges, is connected to described holder (3)
In the annular groove of inner chamber；Described sealing ring (4) towards described spool (1) biasing and with described spool (1) sealing engagement；
Described sealing ring (4) and described annular groove interference fit, be provided with between its internal ring and described annular groove in peace
The air discharge duct of air in discharge ring connected in star during dress sealing ring (4).
Sealing structure the most according to claim 1, it is characterised in that described air discharge duct is arranged on described holder (3)；
The inlet end of described air discharge duct is arranged on described annular groove one end away from described spool (1), and exhaust end is communicated to institute
State holder (3) and the gap location of spool (1).
Sealing structure the most according to claim 2, it is characterised in that described air discharge duct includes: first row air drain (5), institute
State first row air drain (5) to be vertically arranged with the plane residing for described annular groove.
Sealing structure the most according to claim 2, it is characterised in that described air discharge duct includes: second row air drain (6), institute
State second row air drain (6) to be arranged in parallel with the plane residing for described annular groove.
Sealing structure the most according to claim 1, it is characterised in that described air discharge duct includes: be arranged on described sealing ring
(4) the 3rd air discharge duct (7) on, described 3rd air discharge duct (7) is arranged on the internal ring of described sealing ring (4), is communicated to described solid
Determine device (3) and the gap location of spool (1).
6. according to the sealing structure according to any one of claim 1-5, it is characterised in that described spool (1) is spherical valve core
Or the spool of writing board shape.
7. according to the sealing structure according to any one of claim 1-5, it is characterised in that the internal ring of described sealing ring (4) is remote
The chamfering (8) being provided with from one end of described spool (1), is used for realizing sealing ring (4) and the installation of annular groove.
8. according to the sealing structure according to any one of claim 1-5, it is characterised in that be arranged on described holder (3)
Described annular groove be provided with the draw-in groove (9) being connected with described sealing ring (4) clamping, described draw-in groove (9) is arranged on described annular
The upper surface of groove inner chamber and the one end away from described spool (1)；
During assembling, described sealing ring (4) occurs plastic deformation to be connected in described clamping groove (9).
9. according to the sealing structure according to any one of claim 1-5, it is characterised in that
Described holder forms first step and second step on (3)；
Described first step is provided with elastic component (10), and one end of described elastic component (10) is supported with the shoulder of described first step
Lean on, the other end and described valve body (2) against；
The locating surface (11) being equipped with described second step it is provided with in described valve body (2)；
Graphite rope (12) and sealing ring (13) it is provided with between described holder (3) and valve body (2).
10. a valve body, including spool (1), valve body (2), and is arranged on the holder between described spool (1) and valve body (2)
(3), it is characterised in that also include the sealing structure according to any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956603.8A CN106321880B (en) | 2016-10-27 | 2016-10-27 | A kind of sealing structure for sealing valve sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610956603.8A CN106321880B (en) | 2016-10-27 | 2016-10-27 | A kind of sealing structure for sealing valve sealing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106321880A true CN106321880A (en) | 2017-01-11 |
| CN106321880B CN106321880B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610956603.8A Active CN106321880B (en) | 2016-10-27 | 2016-10-27 | A kind of sealing structure for sealing valve sealing |
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| Country | Link |
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| CN (1) | CN106321880B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458467A (en) * | 2018-10-09 | 2019-03-12 | 电建阀门有限公司 | A kind of coal changes gas ball-valve dedicated |
| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
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| US5707042A (en) * | 1995-09-14 | 1998-01-13 | Nuovo Pignone S.P.A. | Device for shifting the seats of a ball valve |
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| CN103148237A (en) * | 2013-03-26 | 2013-06-12 | 昆山维萨阀门有限公司 | On-line dismounting structure of top-mounted fixed ball valve |
| CN203627892U (en) * | 2013-12-18 | 2014-06-04 | 雷蒙德（北京）阀门制造有限公司 | Soft seal valve seat of ultra-low-temperature fixed ball valve |
| CN204878813U (en) * | 2015-06-12 | 2015-12-16 | 浙江成高阀门有限公司 | High -pressure gas seals up ball valve |
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| US3794291A (en) * | 1972-05-18 | 1974-02-26 | Kitamura Valve Mfg Co Ltd | Ball valve apparatus |
| US5707042A (en) * | 1995-09-14 | 1998-01-13 | Nuovo Pignone S.P.A. | Device for shifting the seats of a ball valve |
| CN201034183Y (en) * | 2007-06-01 | 2008-03-12 | 苏州纽威阀门有限公司 | Soft-sealing standing ball valve seat structure |
| CN202674366U (en) * | 2012-06-28 | 2013-01-16 | 张业宝 | Valve seat of ball valve |
| CN202790647U (en) * | 2012-08-29 | 2013-03-13 | 昆山维萨阀门有限公司 | Large-caliber top-mounted fixed ball valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458467A (en) * | 2018-10-09 | 2019-03-12 | 电建阀门有限公司 | A kind of coal changes gas ball-valve dedicated |
| CN109798372A (en) * | 2019-03-14 | 2019-05-24 | 江苏神通阀门股份有限公司 | Formula beveled ball valve is filled on a kind of low temperature |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106321880B (en) | 2019-04-09 |
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