CN109695734A - A kind of efficient hard seal ball valve - Google Patents
A kind of efficient hard seal ball valve Download PDFInfo
- Publication number
- CN109695734A CN109695734A CN201910144698.7A CN201910144698A CN109695734A CN 109695734 A CN109695734 A CN 109695734A CN 201910144698 A CN201910144698 A CN 201910144698A CN 109695734 A CN109695734 A CN 109695734A
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- China
- Prior art keywords
- valve
- sphere
- valve body
- sealing
- spring
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 77
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- 210000004907 gland Anatomy 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 238000005552 hardfacing Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000004372 laser cladding Methods 0.000 claims description 2
- 238000003763 carbonization Methods 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000009304 pastoral farming Methods 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010959 steel Substances 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
- F16K5/0657—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
- 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
-
- 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
- F16K5/0605—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 with particular plug arrangements, e.g. particular shape or built-in means
-
- 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
-
- 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
- F16K5/0652—Spindles or actuating means for remote operation
-
- 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
- F16K5/0673—Composite packings
- F16K5/0678—Composite packings in which only one of the components of the composite packing is contacting the plug
-
- 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
-
- 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
-
- 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
Abstract
The present invention relates to technical field of engineering equipment, specially a kind of efficient hard seal ball valve, the sealing surface that the valve seat and valve body inner peripheral portion are tightly connected is mutual cooperation and the stepped ramp type structure that both ends fit, the one end of the valve seat far from sphere is connect by the first seal assembly mechanism with valve bonnet seal, is sealed between the valve rod and valve body by the second seal assembly mechanism.It is locked by carbon seal ring sealing between valve body and valve deck and bolt and nut, that is, completes assembly.So the endurance of overall butterfly spring, sealing surface is eager to excel one times or more, so two way seal is than individual event sealing structure good seal performance, long service life.This product is adapted to the open and close system of hand actuator multiple types.Being mounted directly handle can be realized manual opening and closing；On valve body after mounting bracket, valve stem tip installation sleeve, all kinds of actuators can be installed, realize and remotely or automatically change manipulation.
Description
Technical field
The present invention relates to technical field of engineering equipment, specially a kind of efficient hard seal ball valve.
Background technique
Ball valve, with the rapid development of science and technology, continuously improving for production technology and product structure is rapidly developed into
For a kind of main valve class.Currently, hard seal ball valve realizes the component of pipe-line system on-off and flow control as a kind of,
Ball valve is widely used in industries such as petroleum refining, long-distance transport pipes, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steels,
Occupy very important status in national economy.It has been obtained in many fields such as petroleum, chemical industry, metallurgy, water power extremely wide
It applies generally.In existing some hard seal ball valves, in some high temperature or fluid media (medium) with particle, fiber, especially
In the transport line of coal chemical industry Heisui River operating condition field, the boiler of power station metallurgy industry and fouling freezing all using often service life
It does not grow, is mainly manifested in the following aspects: first is that sealing surface, intolerant to abrasion, particulate matter in high temperature and pressure, medium etc. holds
Easily scratch valve cavity and intracavitary component；Second is that valve seat is stuck by particulate matter in medium；Third is that spring or elastic disk are in medium
It washes away lower product and is mingled with matter, valve base sealing is caused to fail；Fourth is that traditional hard seal ball valve is generally sealed using unidirectional firmly, in medium
Under pressure effect, valve rod can have bias, cause opening and closing torque big；Fifth is that unidirectional hard seal ball valve medium flow direction design surrounds
The reversed requirement of seal valve seat answer strict implement valve body to mark flow direction assembly during Tube formation, therefore cause to install
Journey is many and diverse, needs to flow to regard to medium and gives installer's progress professional training.Above-mentioned these are that traditional hard seal ball valve is more normal
See problem.
Summary of the invention
The purpose of the present invention is to provide a kind of efficient hard seal ball valves, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme:
A kind of efficient hard seal ball valve, it is real including valve body, two valve seats, the sphere in valve body with through-hole and control sphere
The valve rod now closed and opened, the valve rod reach the outside of valve body through valve body, and the two sides of the valve body pass through bolt and nut
Be connected with valve deck, two valve seats be located at the both ends of valve body and with the inconsistent composition sealing pair of sphere, the valve seat and valve body
The sealing surface that inner peripheral portion is tightly connected be mutual cooperation and the stepped ramp type structure that fits of both ends, and the one end of valve seat far from sphere
Outer diameter is less than valve seat close to one end outer diameter of sphere, and the valve seat passes through the first seal assembly mechanism and valve far from one end of sphere
Lid is tightly connected, and is sealed between the valve rod and valve body by the second seal assembly mechanism.
Preferably, first seal assembly mechanism includes pasting between spring base, spring base and valve seat in boss type
The second sealing ring, the first sealing ring that narrow section of face of spring base is bonded with valve deck internal perisporium and the thick section of spring base vertical section with
The spring assembly of valve deck internal perisporium fitting, the inner wall of the valve deck are arranged to and the matched boss type structure of spring base.
Preferably, the valve seat is provided with metal carbide sealing ring close to the end face of sphere, and the metal hard closes
Golden sealing ring is matched with the spherical surface of sphere, and metal carbide sealing ring is contracting O-shaped structure along sphere both ends runner design,
Metal carbide sealing ring and spherical ball face joint place offer slightly-inclined face cutting edge.
Preferably, the spring assembly is the first disk spring.
Preferably, the spring assembly is compressed spring.
Preferably, first sealing ring and the second sealing ring are carbon seal ring.
Preferably, the junction of the valve body and valve deck is covered with one layer of cladding gasket.
Preferably, second seal assembly mechanism includes the filler being filled in valve body stuffing-box, is pressed together on filler
Second disk spring of end face and gland positioned at the second disk spring upper end, the gland pass through gland
Bolt and nut and valve body are locked.
Preferably, the valve rod is in inverted T-type structure, is fitted with valve rod anti-wear gasket, the valve on the T stage rank of the valve rod
The vertical bottom end of bar is connected with the positioning pin with sphere top limit fixing slot synergism, the T stage rank of the positioning pin and valve rod
Place is equipped with the anti-static spring of anti-static function structure.
Preferably, the metal carbide sealing ring sealing position and sphere spherical surface use laser cladding process built-up welding not
The heat resistant and wear resistants composite material such as La Laiergao molybdenum powder of stainless steel or silicon carbide, graphene, valve seat are used with high rigidity, resistance to
The hardfacing alloy material of abrasion.
Compared with prior art, the beneficial effects of the present invention are: this efficient hard seal ball valve is the valve body valve that will be pre-installed
Bar sub-assembly and valve deck valve base sealing sub-assembly are locked by carbon seal ring sealing between valve body and valve deck and bolt and nut,
Complete assembly.Compared with traditional unidirectional hard sealing structure, first is that the concentric of valve rod can be more preferably ensured during opening and closing
Degree, simultaneously bi-directionally sealing structure, can guarantee opening and closing torsion than unidirectional light one times of hard sealing structure valve of tradition or more；Second is double
Be all made of to hard sealed graphite sealing ring and valve seat it is split type, assembly and maintenance than traditional individual event sealing structure facilitate；Third is
Two-way hard seal seal ball-valve is flowed to without medium and is required, and any one end can be used as the inlet and outlet of medium, so reduce scene
Installer's training and installer check medium flow direction and waste time；The sealing harder than individual event of last two-way hard seal sealing structure
The pressure that structure individually seals receiving wants low one times, so the endurance of overall butterfly spring, sealing surface is eager to excel one times or more,
So two way seal is than individual event sealing structure good seal performance, long service life.This product is adapted to hand actuator multiple types
Open and close system.Being mounted directly handle can be realized manual opening and closing；On valve body after mounting bracket, valve stem tip installation sleeve,
All kinds of actuators can be installed, realize and remotely or automatically change manipulation.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the portion A of the present invention enlarged structure schematic diagram；
Fig. 3 is overlooking structure diagram in Fig. 1.
In figure: valve deck 1, the first sealing ring 2, spring assembly 3, spring base 4, the second sealing ring 5, valve seat 6, sphere 7, cladding
Gasket 8, valve body 9, anti-static spring 10, valve rod anti-wear gasket 11, filler 12, the second disk spring 13, gland 14, valve rod
15, bolt and nut 16, gland stud nut 17, metal carbide sealing ring 18.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution:
A kind of efficient hard seal ball valve, including 9, two valve seats 6 of valve body, the sphere 7 in valve body 9 with through-hole and control ball
Body 7 realizes that the valve rod 15 closed and opened, valve rod 15 reach the outside of valve body 9 through valve body 9, and the two sides of valve body 9 pass through bolt
Nut 16 is connected with valve deck 1, and valve body 9 and the junction of valve deck 1 are covered with one layer of cladding gasket 8, seal, two valve seats
6 sealing surfaces for being located at the both ends of valve body 9 and being tightly connected with the inconsistent composition sealing pair of sphere 7, valve seat 6 and 9 inner peripheral portion of valve body
To cooperate and the stepped ramp type structure that fits of both ends, and valve seat 6 is less than valve seat 6 close to ball far from one end outer diameter of sphere 7
One end outer diameter of body 7, the one end of valve seat 6 far from sphere 7 are tightly connected by the first seal assembly mechanism and valve deck 1, valve rod 15
It is sealed between valve body 9 by the second seal assembly mechanism.
First seal assembly mechanism includes close in paste between the spring base 4 of boss type, spring base 4 and valve seat 6 second
The vertical section and valve of the first sealing ring 2 and the thick section of spring base 4 that 4 narrow sections of seal 5, spring base faces are bonded with 1 internal perisporium of valve deck
The spring assembly 3 of 1 internal perisporium of lid fitting, spring assembly 3 is the first disk spring or is compressed spring, is opened up on spring base 4
Have and clicks compression with the matched spring retainer groove of spring assembly 3, the first disk spring and the two-way selection of compressed spring, torsion light one
Spring, torsion weight a little select the first disk spring, and it is to make very inconvenient, the valve on valve body that the spring of the prior art, which falls into position,
Body, which is beaten to have leaked, also not to be known, the application is to beat spring assembly 3 on valve seat 6, easy to process, can use the first disk spring
Compressed spring can be used, is double-purpose.
Spring base 4 is designed to facilitate processing and maintenance, the first sealing ring 2 and the second sealing ring at separate structure with valve seat 6
5 be carbon seal ring, and the setting of carbon seal ring prevents medium from entering 3 position of spring assembly and valve by gap well
Seat 6 end graphite grazings, cause the particulate matter in fouling or medium, erosion to suppress spring assembly 3 extremely, cause it is ineffective,
Carbon seal ring has good heatproof fireproofing function, enables valve seal in hot environment normal use；The inner wall of valve deck 1 is set
It is set to and the end face of sphere 7 is provided with metal carbide sealing ring 18 with the matched boss type structure of spring base 4, valve seat 6,
Metal carbide sealing ring 18 is matched with the spherical surface of sphere 7, and metal carbide sealing ring 18 is set along 7 both ends runner of sphere
It is calculated as contracting O-shaped structure, close to sphere 7 and is close to valve body 9 or 1 lumen position of valve deck equipped with carbon seal ring limit, graphite grazing
Circle and metal carbide sealing ring 18 are to runner collar extension spread ends and the mutual synergism in 6 front end of valve seat.It is filled in valve seat 6 and sealing
With when, first by graphite grazing snare 18 outer ring sealing ring of metal carbide sealing ring limit on, thereafter, load onto valve seat 6,
At the valve seat insert position that there are the limit of spring assembly 3 and end in 6 end of valve seat, spring assembly 3 and carbon seal ring are put on, is made
Its carbon seal ring switches in the multistage carbon seal ring limiting slot of valve deck 1 or 9 inside of valve body.To realize metal carbide
The dual-seal of sealing ring 18 and valve seat 6, also ensure reduce flow of media in sealing surface of seat is washed away, the in addition design
Thoroughly medium is isolated with spring assembly 3, medium spring assembly 3 not will cause wash away or packed particle substance or its
He influences, it is ensured that the sealing performance of valve reduces the slip for reducing medium.Metal carbide sealing ring 18 and sphere
7 spherical surface joint places offer slightly-inclined face cutting edge, and 18 cutting edge of metal carbide sealing ring is bonded with 7 spherical surface of sphere, play spherical surface
Cleaning cleaning and the function to particle, fibrous matter severing.It ensure that the substances such as particle in medium, fiber to the damage of spherome surface
Evil, metal carbide sealing ring 18 and valve seat 6 are reciprocity bi-directional configuration design, and structure design is to balancing sealing both ends
The dynamics of spring assembly 3.Opening and closing torque is reduced, meanwhile, so that both ends runner, which can be used as, flows in or out channel, do not flowed
To domination and orient sizing installation valve.18 sealing position of metal carbide sealing ring and 7 spherical surface of sphere are molten using laser
The heat resistant and wear resistants composite material such as technique built-up welding Mo Lalaiergao molybdenum powder of stainless steel or silicon carbide, graphene is applied, ensure that valve
Door sealing face, the wear-resisting of spherical surface undermine heat resistance.Valve seat 6 is using with high rigidity, anti abrasive hardfacing alloy material.
Second seal assembly mechanism includes the filler 12 being filled in 9 stuffing-box of valve body, is pressed together on 12 upper surface of filler
Second disk spring 13 and gland 14 positioned at 13 upper end of the second disk spring, gland 14 pass through gland spiral shell
Bolt nut 17 and valve body 9 are locked, and the second butterfly spring 13 has the characteristics that elastic force is big, durable, and the second butterfly spring 13 plays certainly
Compensation sealing effect can guarantee valve seal effect well, and valve rod 15 is in inverted T-type structure, be bonded on the T stage rank of valve rod 15
There is valve rod anti-wear gasket 11, the vertical bottom end of valve rod 15 is connected with the positioning pin with 7 top limit fixing slot synergism of sphere, positioning pin
With the anti-static spring 10 for being equipped with anti-static function structure at the T stage rank of valve rod 15.
Efficient hard seal ball valve provided by the invention, compared with traditional unidirectional hard sealing structure, first is in opening and closing process
In can more preferably ensure the concentricity of valve rod 15, simultaneously bi-directionally sealing structure, can guarantee opening and closing torsion than traditional unidirectional hard sealing
Light one times of structure valve or more；Second is that two-way hard seal carbon seal ring and valve seat 6 are all made of split type, assembly and maintenance ratio
Traditional individual event sealing structure is convenient；Third is that two-way hard seal seal ball-valve is required without medium flow direction, and any one end can be used as
The inlet and outlet of medium waste time so reducing in-site installation worker training and installer and checking medium flow direction；It is last double
The pressure for individually sealing receiving than individual event hard sealing structure to hard sealing sealing structure is one times low, so overall butterfly spring,
The endurance of sealing surface is eager to excel one times or more, so two way seal is than individual event sealing structure good seal performance, long service life.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of efficient hard seal ball valve including valve body (9), two valve seats (6), is located at the sphere (7) with through-hole in valve body (9)
And the valve rod (15) closed and opened is realized in control sphere (7), the valve rod (15) reaches valve body (9) through valve body (9)
The two sides of outside, the valve body (9) are connected with valve deck (1) by bolt and nut (16), it is characterised in that: two valve seats
(6) positioned at valve body (9) both ends and with the inconsistent composition sealing pair of sphere (7), the valve seat (6) and valve body (9) inner peripheral portion are close
The sealing surface of envelope connection is mutual cooperation and the stepped ramp type structure that both ends fit, and outside one end of valve seat (6) separate sphere (7)
Diameter is less than valve seat (6) close to one end outer diameter of sphere (7), and the valve seat (6) passes through the first sealing group far from the one end of sphere (7)
Part mechanism and valve deck (1) are tightly connected, and are sealed between the valve rod (15) and valve body (9) by the second seal assembly mechanism.
2. a kind of efficient hard seal ball valve according to claim 1, it is characterised in that: first seal assembly mechanism packet
Include the second sealing ring (5), narrow section of the spring base (4) pasted between spring base (4), spring base (4) and valve seat (6) in boss type
The vertical section and valve deck (1) internal perisporium of the thick section of the first sealing ring (2) and spring base (4) that face is bonded with valve deck (1) internal perisporium
The spring assembly (3) of fitting, the inner wall of the valve deck (1) are arranged to and spring base (4) matched boss type structure.
3. a kind of efficient hard seal ball valve according to claim 1, it is characterised in that: the valve seat (6) is close to sphere (7)
End face be provided with metal carbide sealing ring (18), the spherical surface of the metal carbide sealing ring (18) and sphere (7)
It matches, metal carbide sealing ring (18) is contracting O-shaped structure along sphere (7) both ends runner design, and metal carbide is close
Seal (18) and sphere (7) spherical surface joint place offer slightly-inclined face cutting edge.
4. a kind of efficient hard seal ball valve according to claim 2, it is characterised in that: the spring assembly (3) is first
Disk spring.
5. a kind of efficient hard seal ball valve according to claim 2, it is characterised in that: the spring assembly (3) is compression
Spring.
6. a kind of efficient hard seal ball valve according to claim 2, it is characterised in that: first sealing ring (2) and
Two sealing rings (5) are carbon seal ring.
7. a kind of efficient hard seal ball valve according to claim 1, it is characterised in that: the valve body (9) and valve deck (1)
Junction is covered with one layer of cladding gasket (8).
8. a kind of efficient hard seal ball valve according to claim 1, it is characterised in that: second seal assembly mechanism packet
Include the filler (12) being filled in valve body (9) stuffing-box, be pressed together on filler (12) upper surface the second disk spring (13) and
Gland (14) positioned at the second disk spring (13) upper end, the gland (14) pass through gland stud nut
(17) it is locked with valve body (9).
9. a kind of efficient hard seal ball valve according to claim 8, it is characterised in that: the valve rod (15) is in inverted T shaped knot
Structure is fitted with valve rod anti-wear gasket (11) on the T stage rank of the valve rod (15), the vertical bottom end of the valve rod (15) be connected with
Antistatic is installed at the T stage rank of the positioning pin of sphere (7) top limit fixing slot synergism, the positioning pin and valve rod (15)
The anti-static spring (10) of functional structure.
10. a kind of efficient hard seal ball valve according to claim 3, it is characterised in that: the metal carbide sealing
It encloses (18) sealing position and sphere (7) spherical surface uses laser cladding process built-up welding Mo Lalaiergao molybdenum powder of stainless steel or carbonization
The heat resistant and wear resistants composite material such as silicon, graphene, valve seat (6) is using with high rigidity, anti abrasive hardfacing alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144698.7A CN109695734A (en) | 2019-02-27 | 2019-02-27 | A kind of efficient hard seal ball valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910144698.7A CN109695734A (en) | 2019-02-27 | 2019-02-27 | A kind of efficient hard seal ball valve |
Publications (1)
| Publication Number | Publication Date |
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| CN109695734A true CN109695734A (en) | 2019-04-30 |
Family
ID=66235076
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910144698.7A Pending CN109695734A (en) | 2019-02-27 | 2019-02-27 | A kind of efficient hard seal ball valve |
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| CN (1) | CN109695734A (en) |
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| CN110454586A (en) * | 2019-09-11 | 2019-11-15 | 浙江联大阀门有限公司 | Wear-resisting regulation ball valve |
| CN113048258A (en) * | 2021-03-15 | 2021-06-29 | 滨州永泰不锈钢制品有限公司 | Seabed high pressure ball valve seal structure |
| US20220034413A1 (en) * | 2020-07-29 | 2022-02-03 | Mikuni Corporation | Rotary-type valve device |
| CN114413024A (en) * | 2022-03-15 | 2022-04-29 | 安徽省屯溪高压阀门有限公司 | Two-piece type hard-sealing floating ball valve |
| CN115899310A (en) * | 2023-01-06 | 2023-04-04 | 无锡斯考尔自动控制设备有限公司 | High-frequency metal hard sealing ball valve |
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Address after: 325000 33 gangrong Road, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Applicant after: Zhejiang juzhixin Valve Co.,Ltd. Address before: 325000 2nd floor, Room 201, building 24, No.16 Binhai 2nd Road, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Applicant before: WENZHOU JIEKAI INTELLIGENT EQUIPMENT TECHNOLOGY Co.,Ltd. |
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