CN109357035A - A kind of valve rod axial direction seal ball-valve - Google Patents
A kind of valve rod axial direction seal ball-valve Download PDFInfo
- Publication number
- CN109357035A CN109357035A CN201811631877.5A CN201811631877A CN109357035A CN 109357035 A CN109357035 A CN 109357035A CN 201811631877 A CN201811631877 A CN 201811631877A CN 109357035 A CN109357035 A CN 109357035A
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- Prior art keywords
- valve
- corrosion layer
- valve rod
- sealing
- corrosion
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- 238000005260 corrosion Methods 0.000 claims abstract description 105
- 238000007789 sealing Methods 0.000 claims abstract description 81
- 238000005452 bending Methods 0.000 claims description 24
- 210000004907 gland Anatomy 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 13
- 230000003628 erosive effect Effects 0.000 claims description 2
- 239000000945 filler Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010020852 Hypertonia Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0657—Particular coverings or materials
-
- 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
- F16K5/0694—Spindle sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
A kind of valve rod axial direction seal ball-valve.It solves and seals unreliable, easy the problem of leaking at existing ball-valve valve rod.It includes sphere, the valve rod being connected with sphere, valve deck and valve body, the valve body is equipped with medium channel, the sphere is set in medium channel, the sphere is equipped with the first anti-corrosion layer, first anti-corrosion layer is lining on sphere and extends on valve rod, the valve body is equipped with the second anti-corrosion layer, third anti-corrosion layer is equipped between the valve deck and valve body, the third anti-corrosion layer and the first anti-corrosion layer fit to form primary sealing area and primary sealing area on its cross section in inverted L-type, the third anti-corrosion layer and the second anti-corrosion layer fits to form secondary sealing area, the valve deck is equipped with so that the fitting of third anti-corrosion layer compresses the hold-down mechanism of the first anti-corrosion layer.The advantages that present invention also has structure simple, easy to assembly, sealed reliable, long service life.
Description
Technical field
The present invention relates to a kind of ball valves, and in particular to a kind of valve rod axial direction seal ball-valve.
Background technique
Ball valve (ball valve) comes out in the 1950s, with the rapid development of science and technology, production technology and
Product structure is continuously improved, and in the 40 short years, has been rapidly developed as a kind of main valve class.In western industrial
Flourishing country, the use of ball valve is continuous year by year to be risen.In China, ball valve is widely used in petroleum refining, length
The industries such as defeated pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel occupy very important ground in national economy
Position.It has the movement being rotated by 90 °, and faucet body is sphere, has circular through hole or channel to pass through its axis.Ball valve is in pipeline
It is mainly used to make the flow direction for cutting off, distributing and changing medium, it only needs the rotation with the operation and very little being rotated by 90 °
Torque can close tightly.
Existing Fluorine-lined ball valve generally includes valve body, valve rod, valve ball and valve deck, usually at valve body, valve rod, valve ball into
Row Fluorine-lined, so that product corrosion resistance with higher, the existing improvement carried out to ball valve, are mostly at valve seat and valve ball
Compensation is sealed, so that medium channel avoids leaking, and to still using packing seal at valve rod (referring to attached drawing 1).
Filler is generallyd use at the valve rod of existing ball valve and valve deck to be sealed, though anti-corrosion layer is also provided at valve deck, but due to
Structure limitation, unreliable with the sealing at valve rod, only simple fitting is easy leakage.In the actual production process, due to filling out
Material is usually to carry out compressing by gland being sealed, then spread to realize reliable sealing by the characteristic of itself, therefore
Be affected by temperature it is big, in real work winter and summer be affected by temperature caused by low precision there are two centimetre, therefore installing
When it is high to the skill requirement of staff, and be easy to appear during continuous work that abrasion is excessive and leakage.Filler and valve rod
Place is sealed into radial seal (filler is defined as radial seal since radial diffusion is bonded with valve rod), during installation to valve
The concentricity requirement of bar is very high, slightly deviation, can make filler abrasion severe in operation, although can be arranged at filler
Gland, but staff's real time monitoring and manual compression filler are needed, it is time-consuming and laborious, and service life is short, opening and closing number is only
It can reach up to a hundred times.When especially in atmospheric control, bolt-center that aerodynamic center, pneumatic driving moving part are driven,
Club center, ball centre are required to keep concentricity, so that product structure is complicated, installation trouble, are easy, and it is unreliable to seal,
It is easy leakage.
Summary of the invention
To solve the problem of to seal unreliable easy leakage in background technique at existing ball-valve valve rod, the present invention provides one
Kind valve rod axial direction seal ball-valve.
The technical scheme is that a kind of valve rod axial direction seal ball-valve, including sphere, the valve rod being connected with sphere,
Valve deck and valve body, the valve body are equipped with medium channel, and the sphere is set in medium channel, and the sphere, which has, to close
The second position that medium channel is connected in the first position of flow of media and when opening in medium channel is blocked when closing, it is described
Sphere is equipped with the first anti-corrosion layer, and first anti-corrosion layer is lining on sphere and extends on valve rod, the valve body
Be equipped with the second anti-corrosion layer, between the valve deck and valve body be equipped with third anti-corrosion layer, the third anti-corrosion layer with
First anti-corrosion layer fit to form primary sealing area and primary sealing area on its cross section in inverted L-type, described the
Three anti-corrosion layers and the second anti-corrosion layer fit to form secondary sealing area, and the valve deck is equipped with so that third anti-corrosion layer
Fitting compresses the hold-down mechanism of the first anti-corrosion layer.
As an improvement of the present invention, the valve rod is equipped with valve rod shoulder block, and first anti-corrosion layer includes
Valve rod vertical portion and the valve rod bending part at valve rod shoulder block, the third anti-corrosion layer are equipped with and valve rod bending part phase
First sealing of fitting, the second sealing to fit with valve rod vertical portion, first sealing and valve rod bending part,
Second sealing matches to form the primary sealing area with valve rod vertical portion.
As a further improvement of the present invention, the valve body is equipped with valve body shoulder block, and second anti-corrosion layer exists
Valve body bending part is equipped at valve body shoulder block, the third anti-corrosion layer is equipped with the third to fit with valve body bending part and seals
Portion, the third sealing and valve body bending part complement each other to form secondary sealing area.
As a further improvement of the present invention, the valve rod vertical portion and valve rod bending part are arranged in a mutually vertical manner.
As a further improvement of the present invention, the valve deck is equipped with step, and the valve deck passes through its end face, step
So that third anti-corrosion layer fits with the second anti-corrosion layer, the first anti-corrosion layer respectively.
As a further improvement of the present invention, the hold-down mechanism includes gland, sealing element and locking nut, described
Sealing element is sheathed on outside valve rod and fits respectively with valve rod, third anti-corrosion layer, sets between the locking nut and gland
Flexible part, the elastic component, which has, to be compressed sealing element by gland and makes sealing element corrosion-resistant with valve rod, third respectively
The movement tendency that layer fits.
As a further improvement of the present invention, the gland is sheathed on the outside of sealing element, the gland be equipped with
The inclined-plane that sealing element fits.
As a further improvement of the present invention, the sealing element is set to the top of third anti-corrosion layer, the sealing
Part is equipped with O-ring.
As a further improvement of the present invention, the elastic component is disc spring.
As a further improvement of the present invention, the valve body be equipped with corrosion-resistant valve seat, the corrosion-resistant valve seat with
First anti-corrosion layer, the second anti-corrosion layer, third anti-corrosion layer complement each other to form cavity.
The invention has the advantages that anti-corrosion layer is provided with, so that the component quilt that medium channel is likely to contact
Package, avoids metalwork from being corroded, so that product can be suitably used for acting under the operating condition of corrosive media, so that product range of fit
Extensively, and sealed reliable.Third anti-corrosion layer fits with the first anti-corrosion layer, the second anti-corrosion layer realize the close of product respectively
Envelope, sealed reliable use axial seal especially at valve rod, and seal for face, sealed reliable, and be not necessary to guaranty that valve rod is same
Axis degree, so that processing precision of products requirement is low, product is easy for installation, long service life.The present invention also has structure simple, assembly
Conveniently, the advantages that sealed reliable, long service life.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of existing ball valve.
Attached drawing 2 is the structural schematic diagram of the embodiment of the present invention.
Attached drawing 3 is the structure enlargement diagram in attached drawing 2 at I.
In figure, 1, sphere；2, valve rod；21, valve rod shoulder block；3, valve deck；31, step；4, valve body；41, medium channel；42,
Valve body shoulder block；43, corrosion-resistant valve seat；44, cavity；5, the first anti-corrosion layer；51, valve rod vertical portion；52, valve rod bending part；6,
Second anti-corrosion layer；61, valve body bending part；7, third anti-corrosion layer；71, the first sealing；72, the second sealing；73, third
Sealing；8, primary sealing area；9, secondary sealing area；10, hold-down mechanism；11, gland；111, inclined-plane；12, sealing element；13, it locks
Tight nut；14, elastic component；15, O-ring.
Specific embodiment
Embodiments of the present invention is further illustrated with reference to the accompanying drawing:
As shown in connection with fig. 3 by Fig. 2, a kind of valve rod axial direction seal ball-valve, including sphere 1, the valve rod being connected with sphere 12, valve deck
3 and valve body 4, the valve body 4 is equipped with medium channel 41, and the sphere 1 is set in medium channel 41, the sphere 1
With block that the first position of flow of media and when opening in medium channel 41 make that medium channel 41 is connected when closing second
Position, the sphere 1 are equipped with the first anti-corrosion layer 5, and first anti-corrosion layer 5 is lining on sphere 1 and extends to valve
On bar 2, the valve body 4 is equipped with the second anti-corrosion layer 6, and third anti-corrosion layer 7 is equipped between the valve deck 3 and valve body 4,
The third anti-corrosion layer 7 fits with the first anti-corrosion layer 5, and to form primary sealing area 8 and primary sealing area 8 transversal at its
It is in inverted L-type on face, the third anti-corrosion layer 7 and the second anti-corrosion layer 6 fit to form secondary sealing area 9, described
Valve deck 3 be equipped with so that third anti-corrosion layer 7 fitting compress the first anti-corrosion layer 5 hold-down mechanism 10.Of the invention is beneficial
Effect is to be provided with anti-corrosion layer to avoid metalwork rotten so that the component that medium channel is likely to contact is wrapped up
Erosion, so that product can be suitably used for acting under the operating condition of corrosive media, so that product range of fit is wide, and sealed reliable.Third
Anti-corrosion layer fits with the first anti-corrosion layer, the second anti-corrosion layer realize the sealing of product respectively, and sealed reliable especially exists
At valve rod using axial seal (axial seal refers to that third anti-corrosion layer is compressed the first anti-corrosion layer by axial force, at this time the
The direction for the power that one sealing surface is subject to is axially parallel with valve rod, is defined as axial seal), and sealed for face, sealed reliable, and not
Need to guarantee valve rod concentricity, so that processing precision of products requirement is low, product is easy for installation, long service life.The present invention also has
Have that structure is simple, it is easy to assembly, the advantages that sealed reliable, long service life.
The valve rod 2 is equipped with valve rod shoulder block 21, and first anti-corrosion layer 5 includes valve rod vertical portion 51 and is set to
Valve rod bending part 52 at valve rod shoulder block 21, the third anti-corrosion layer 7 are equipped with the to fit with valve rod bending part 52
One sealing 71, the second sealing 72 to fit with valve rod vertical portion 51, first sealing 71 and valve rod bending part
52, the second sealing 72 matches to form the primary sealing area 8 with valve rod vertical portion 51.It is such to be arranged so that medium is
Make to write at valve seat, it is still desirable to need by the inner wall of the second sealing, the first sealing and third anti-corrosion layer logical
Crossing the contact of three levels could leak from valve rod, so that product sealed reliable, especially receives axial force at the first sealing
Compression is reliably bonded with valve rod bending part, so that product sealed reliable.
The valve body 4 is equipped with valve body shoulder block 42, and second anti-corrosion layer 6 is equipped with valve body at valve body shoulder block 42
Bending part 61, the third anti-corrosion layer 7 are equipped with the third sealing 73 that fits with valve body bending part 61, and described the
Three sealings 73 and valve body bending part 61 complement each other to form secondary sealing area 9.Such structure makes valve deck and valve seal
Reliably.
The valve rod vertical portion 51 and valve rod bending part 52 is arranged in a mutually vertical manner.Oil duct when leakage can be made to increase in this way
Long, that is, needing to destroy contact surface can just leak, so that product sealed reliable.
The valve deck 3 is equipped with step 31, and the valve deck 3 makes third anti-corrosion layer 7 by its end face, step 31
It fits respectively with the second anti-corrosion layer 6, the first anti-corrosion layer 5.The setting of valve deck end face and step, to third anti-corrosion layer
First, second and third sealing is squeezed, so that each sealing surface is not only simple fitting, and is stress fitting, is made
Obtaining product hermeticity can be good.
The hold-down mechanism 10 includes gland 11, sealing element 12 and locking nut 13, and the sealing element 12 is sheathed on
Valve rod 2 is outer and fits respectively with valve rod 2, third anti-corrosion layer 7, and elasticity is equipped between the locking nut 13 and gland 11
Part 14, the elastic component 14, which has, to be compressed sealing element 12 by gland 11 and makes sealing element 12 resistance to valve rod 2, third respectively
The movement tendency that corrosion layer 7 fits.Such structure can provide pressure in real time for third anti-corrosion layer, so that sealing surface
In stress gluing, sealing state, so that product sealed reliable.Specifically, the elastic component 14 is disc spring.
The gland 11 is sheathed on 12 outside of sealing element, and the gland 11 is oblique equipped with fitting with sealing element 12
Face 111.Specifically, the sealing element 12 is set to the top of third anti-corrosion layer 7, and the sealing element 12 is equipped with O-shaped
Circle 15.The present invention uses slope driving sealing element, so that sealing element receives skew force, divides on the oblique force resolution direction
The first sealing that third anti-corrosion layer Yong Yu not compressed makes primary sealing area sealed reliable and sealing element is made to be bonded valve rod,
It realizes further valve stem seal, avoids leaking from valve rod, enable product hermeticity good.
The valve body 4 is equipped with corrosion-resistant valve seat 43, the corrosion-resistant valve seat 43 and the first anti-corrosion layer 5, second
Anti-corrosion layer 6, third anti-corrosion layer 7 complement each other to form cavity 44.The setting of cavity can accommodate the particle in medium, avoid
Hypertonia causes detonation in the prooving of valve seat and system.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or two
More than.
Every technical staff's notice: of the invention although the present invention is described according to above-mentioned specific embodiment
Invention thought be not limited in the invention, any repacking with inventive concept will all be included in this patent protection of the patent right
In range.
Claims (10)
1. a kind of valve rod axial direction seal ball-valve, including sphere (1), the valve rod (2) being connected with sphere (1), valve deck (3) and valve body
(4), it is characterised in that: the valve body (4) is equipped with medium channel (41), and the sphere (1) is set to medium channel (41)
Interior, the sphere (1) to be situated between when having the first position and the opening that block medium channel (41) interior flow of media when closing
The second position of matter channel (41) conducting, the sphere (1) are equipped with the first anti-corrosion layer (5), and described first is corrosion-resistant
Layer (5) is lining on sphere (1) and extends on valve rod (2), and the valve body (4) is equipped with the second anti-corrosion layer (6), described
Third anti-corrosion layer (7) are equipped between valve deck (3) and valve body (4), the third anti-corrosion layer (7) and the first anti-corrosion layer
(5) fit to form primary sealing area (8) and primary sealing area (8) on its cross section in inverted L-type, the third is resistance to
Corrosion layer (7) and the second anti-corrosion layer (6) fit to be formed secondary sealing area (9), and the valve deck (3) is equipped with so that third
Anti-corrosion layer (7) fitting compresses the hold-down mechanism (10) of the first anti-corrosion layer (5).
2. a kind of valve rod axial direction seal ball-valve according to claim 1, it is characterised in that the valve rod (2) is equipped with valve
Pole spacing shoulder (21), first anti-corrosion layer (5) include valve rod vertical portion (51) and the valve rod at valve rod shoulder block (21)
Bending part (52), the third anti-corrosion layer (7) be equipped with fit with valve rod bending part (52) the first sealing (71),
The second sealing (72) to fit with valve rod vertical portion (51), first sealing (71) and valve rod bending part (52),
Second sealing (72) matches to form the primary sealing area (8) with valve rod vertical portion (51).
3. a kind of valve rod axial direction seal ball-valve according to claim 2, it is characterised in that the valve body (4) is equipped with valve
Body shoulder block (42), second anti-corrosion layer (6) are equipped with valve body bending part (61) at valve body shoulder block (42), the third
Anti-corrosion layer (7) is equipped with the third sealing (73) to fit with valve body bending part (61), the third sealing (73)
Secondary sealing area (9) are complemented each other to form with valve body bending part (61).
4. a kind of valve rod axial direction seal ball-valve according to claim 2, it is characterised in that the valve rod vertical portion (51)
It is arranged in a mutually vertical manner with valve rod bending part (52).
5. a kind of valve rod axial direction seal ball-valve according to claim 3, it is characterised in that the valve deck (3) is equipped with platform
Rank (31), the valve deck (3) by its end face, step (31) make third anti-corrosion layer (7) respectively with the second anti-corrosion layer
(6), the first anti-corrosion layer (5) fits.
6. a kind of valve rod axial direction seal ball-valve according to claim 1, it is characterised in that hold-down mechanism (10) packet
Include gland (11), sealing element (12) and locking nut (13), the sealing element (12) be sheathed on valve rod (2) outside and respectively with valve
Bar (2), third anti-corrosion layer (7) fit, and are equipped with elastic component (14) between the locking nut (13) and gland (11), institute
The elastic component (14) stated have compress sealing element (12) by gland (11) and make sealing element (12) respectively with valve rod (2), the
The movement tendency that three anti-corrosion layers (7) fit.
7. a kind of valve rod axial direction seal ball-valve according to claim 6, it is characterised in that the gland (11) is sheathed on
On the outside of sealing element (12), the gland (11) is equipped with the inclined-plane (111) to fit with sealing element (12).
8. a kind of valve rod axial direction seal ball-valve according to claim 6, it is characterised in that the sealing element (12) is set to
The top of third anti-corrosion layer (7), the sealing element (12) are equipped with O-ring (15).
9. a kind of valve rod axial direction seal ball-valve according to claim 6, it is characterised in that the elastic component (14) is dish
Spring.
10. a kind of valve rod axial direction seal ball-valve according to claim 1, it is characterised in that the valve body (4) is equipped with
Corrosion-resistant valve seat (43), the corrosion-resistant valve seat (43) and the first anti-corrosion layer (5), the second anti-corrosion layer (6), third corrosion resistant
Erosion layer (7) complements each other to form cavity (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631877.5A CN109357035B (en) | 2018-12-29 | 2018-12-29 | Axial sealing ball valve of valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631877.5A CN109357035B (en) | 2018-12-29 | 2018-12-29 | Axial sealing ball valve of valve rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109357035A true CN109357035A (en) | 2019-02-19 |
| CN109357035B CN109357035B (en) | 2023-12-01 |
Family
ID=65330127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631877.5A Active CN109357035B (en) | 2018-12-29 | 2018-12-29 | Axial sealing ball valve of valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109357035B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081193A (en) * | 2019-04-30 | 2019-08-02 | 浙江东信阀门有限公司 | A kind of lining plastic regulating valve |
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| KR20040019137A (en) * | 2002-08-21 | 2004-03-05 | 정대우 | Ball valve |
| US20090095931A1 (en) * | 2007-10-15 | 2009-04-16 | Stunkard Gerald A | Ball valve having self-centering seats |
| KR20100004817U (en) * | 2008-10-31 | 2010-05-11 | 김연수 | Valve seat for ball valve |
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