CN108317269A - A kind of low temperature resistant fixing ball valve - Google Patents

A kind of low temperature resistant fixing ball valve Download PDF

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Publication number
CN108317269A
CN108317269A CN201810224769.XA CN201810224769A CN108317269A CN 108317269 A CN108317269 A CN 108317269A CN 201810224769 A CN201810224769 A CN 201810224769A CN 108317269 A CN108317269 A CN 108317269A
Authority
CN
China
Prior art keywords
valve
fixedly connected
sphere
ball valve
low temperature
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.)
Withdrawn
Application number
CN201810224769.XA
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Chinese (zh)
Inventor
王婷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yunhe Manxingzhe Toys Co Ltd
Original Assignee
Yunhe Manxingzhe Toys Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yunhe Manxingzhe Toys Co Ltd filed Critical Yunhe Manxingzhe Toys Co Ltd
Priority to CN201810224769.XA priority Critical patent/CN108317269A/en
Publication of CN108317269A publication Critical patent/CN108317269A/en
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00Construction of housing; Use of materials therefor
    • F16K27/06Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug 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
    • F16K5/06Plug 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
    • F16K5/061Plug 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 knee-joint
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug 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
    • F16K5/06Plug 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
    • F16K5/0647Spindles or actuating means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00Plug 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
    • F16K5/08Details

Abstract

The invention discloses a kind of low temperature resistant fixing ball valves, including valve body, the middle-end of the body base is movably installed with lower bearing, the inner cavity of the lower bearing is connected with sphere by connecting rod, the outer surface of the sphere is coated with the second polytetrafluorethylecoatings coatings, aluminum oxide coating and tungsten carbide coating successively from inside to outside, the top of the sphere is fixedly connected with upper bearing (metal), the inner cavity of the upper bearing (metal) is connected with valve rod, the top of the valve rod is fixedly connected with handle, and the middle-end of the body top is fixedly connected with valve rod mounting base.The present invention has been fixedly connected with sleeve at the both ends of body top, preformed groove has been opened up at the both ends of body base, and pass through the effect of spring, supporting rod and gasket, the leakproofness of this ball valve can be improved, it is four groups of flexible sealings simultaneously, not only increases sealing effect, while also reducing the damaged condition of gasket, the service life for improving this ball valve meets the interests of enterprise itself.

Description

A kind of low temperature resistant fixing ball valve
Technical field
The present invention relates to valve technology field, specially a kind of low temperature resistant fixing ball valve.
Background technology
Valve is the control unit in fluid delivery system, has cut-off, adjusting, water conservancy diversion, prevents adverse current, voltage stabilizing, shunting Or the functions such as overflow pressure relief, it is used for the valve of fluid control systems, from simplest shut-off valve to extremely complex robot control system(RCS) Used in various valves, kind and specification are quite various, valve can be used for controlling empty gas and water, steam, various corrosivity be situated between The flowing of the various types fluid such as matter, mud, oil product, liquid metal and radiating medium, valve are also divided into cast iron according to material It is valve, cast steel valve, stainless valve, chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, Plastic valve, nonstandard customized Valve etc..
It is domestic also in continuous exploitation and application as world's new energy is widely used, such as liquefied natural gas, liquid second The cryogenic medias such as alkene, liquid oxygen, as these new energy demands are growing day by day, ball valve is as oil, chemical industry, the industries pipe such as natural gas Road separates the capital equipment of medium, and for ultra-low temperature ball valve immediately also by wilderness demand, fixing ball valve is high-performance ball valve of new generation, fits For long-distance transport pipes and general industry pipeline, intensity, safety, adverse environment resistant etc. have carried out special examine in design Consider, be suitable for various corrosivity and non-aggressive medium, it is compared with floating ball valve, and when work, Fluid pressure is in sphere before valve The active force of upper generation all passes to bearing, and sphere will not be made to be moved to valve seat, thus valve seat is not subject to excessive pressure, So the torque of fixing ball valve is small, valve seat deformation is small, sealing performance is stable, service life is long, is suitable for high pressure, heavy caliber field It closes, fixing ball valve has two kinds of valve body structures of two pieces of formulas and three-piece type, middle flange to be connected with, and sealing is using enhancing polytetrafluoroethyl-ne Alkene is bumped into stainless steel coil, and steel ring rear portion ensures that valve seat is close to sphere equipped with spring, and sealing, upper lower valve rod is kept to be equipped with PTFE Bearing reduces friction, rapid operation, and small axis bottom is equipped with trimmer, ensures that ball and connecing for sealing ring locate position, full-bore:Valve Door flow aperture is consistent with pipeline internal diameter, so that pipeline cleans.It has the following advantages:1, rapid operation:Sphere is by upper and lower axle Support is held, friction is reduced, eliminates and was caused since inlet pressure pushes the huge sealing load of sphere and seal receptacle formation Big torque;2, sealing performance is reliable:For PTFE unisexuality material sealing rings in stainless steel valve seat, metal seat valve tail end is equipped with bullet Spring ensures the enough pretightning force of sealing ring, valve in use sealing surface wear when, valve is after continuation of insurance under the action of the spring Demonstrate,prove good seal performance;3, fire proof construction:To prevent from, due to shock heating or fire appearance, teflin ring being made to burn, Occur compared with gross leak, and encourage the intensity of a fire, fire proof seal ring is set in sphere and valve base chamber, when sealing ring is burnt, in spring force Under effect, valve base sealing ring is pushed on sphere rapidly, forms metal and metal sealing, plays a degree of sealing effect; 4, releasing pressure automatically function:When the pressure medium that valve lumen is stagnated increases to over the prestressing force of spring extremely, valve seat retreats de- From sphere, reach self-relieving effect, release rear valve base is automatically multiple;5, drain line:Valve body is respectively provided with porus excretorius up and down, can Check valve seat whether leak, at work, valve be in standard-sized sheet or it is fully closed when, lay down middle cavity pressure, can directly replace and fill out Material can discharge lumen retentate, reduce pollution of the medium to valve.The operation principle of fixing ball valve is made by spinning ball Valve is unimpeded or occlusion, hard seal fixing ball valve ball valve switch is light, it is small, very heavy caliber, sealed reliable, knot can be made Structure is simple, easy to maintenance, sealing surface and spherical surface often in closed state, be not easy by medium erosion, sealing performance is fixing ball valve One highly important performance, but the sealing generally use soft seal of existing fixing ball valve use flexible nonmetallic close Sealing, to ensure the sealing performance of fixing ball valve, and fixing ball valve is after prolonged use, and leakproofness can reduce, and causes solid Determine ball valve and phenomena such as leak occur, makes troubles for the use of people.
Invention content
The purpose of the present invention is to provide a kind of low temperature resistant fixing ball valves, to solve mentioned above in the background art ask Topic.
To achieve the above object, the present invention provides the following technical solutions:A kind of low temperature resistant fixing ball valve, including valve body, institute The middle-end for stating body base is movably installed with lower bearing, and the inner cavity of the lower bearing is connected with sphere by connecting rod, institute The outer surface for stating sphere is coated with the second polytetrafluorethylecoatings coatings, aluminum oxide coating and tungsten carbide painting successively from inside to outside Layer, the top of the sphere are fixedly connected with upper bearing (metal), and the inner cavity of the upper bearing (metal) is connected with valve rod, the top of the valve rod End is fixedly connected with handle, and the middle-end of the body top is fixedly connected with valve rod mounting base, the interior table of the valve rod mounting base Face is fixedly connected with limiting tooth wheel disc, and connection is engaged between limiting tooth wheel disc and valve rod, and the both ends of the body top are solid Surely it is connected with sleeve, the both ends of the body base offer preformed groove, and the inner cavity of the preformed groove and sleeve passes through bullet Spring is connected with supporting rod, and the end of supporting rod is fixedly connected with gasket, and the outer surface of the gasket is from inside to outside It is coated with the first polytetrafluorethylecoatings coatings, hafnium oxide coating and glass cloth coating successively.
Preferably, the handle is loop configuration, and the outer surface of handle is fixedly connected with anti-skid bulge.
Preferably, it is fixedly connected with waterproof grommet between the valve rod and valve rod mounting base.
Preferably, the quantity of the preformed groove and sleeve is two, and between two preformed grooves and two sleeves it Between be to be symmetrical set.
Preferably, it is setting symmetrical above and below between described two preformed grooves and two sleeves.
Preferably, the through-hole diameter of the sphere and the internal diameter of valve body are identical.
Compared with prior art, beneficial effects of the present invention are as follows:
1, the present invention has been fixedly connected with sleeve at the both ends of body top, and preformed groove has been opened up at the both ends of body base, And by the effect of spring, supporting rod and gasket, the leakproofness of this ball valve can be improved, while it is four groups of flexible sealings, no Sealing effect is improved only, while also reducing the damaged condition of gasket, the service life of this ball valve is improved, meets enterprise The interests of itself.
2, the present invention has been coated with the second polytetrafluorethylecoatings coatings, alundum (Al2O3) successively from inside to outside in the outer surface of sphere Coating and tungsten carbide coating have been coated with the first polytetrafluorethylecoatings coatings, titanium dioxide successively from inside to outside in the outer surface of gasket Hafnium coating and glass cloth coating can be improved low temperature resistant, the corrosion-resistant and rub resistance of sphere and gasket, extend this ball valve Service life.
Description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is spherome surface coating structure schematic diagram of the present invention;
Fig. 3 is gasket face coat structural schematic diagram of the present invention.
In figure:1 valve body, 2 spheres, 3 springs, 4 valve rod mounting bases, 5 waterproof grommets, 6 handles, 7 valve rods, 8 position limited gears Disk, 9 upper bearing (metal)s, 10 sleeves, 11 supporting rods, 12 lower bearings, 13 connecting rods, 14 preformed grooves, 15 gaskets, 16 first polytetrafluoroethyl-nes Ene coatings, 17 hafnium oxide coatings, 18 glass cloth coatings, 19 second polytetrafluorethylecoatings coatings, 20 aluminum oxide coatings, 21 carbon Change tungsten coating.
Specific implementation mode
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 describes, 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.
- 3 are please referred to Fig.1, a kind of low temperature resistant fixing ball valve, including valve body 1, the middle-end of 1 bottom of valve body are movably installed with down The inner cavity of bearing 12, lower bearing 12 is connected with sphere 2, the internal diameter of the through-hole diameter and valve body 1 of sphere 2 by connecting rod 13 Identical, the outer surface of sphere 2 is coated with the second polytetrafluorethylecoatings coatings 19, aluminum oxide coating 20 and carbon successively from inside to outside Change tungsten coating 21, the top of sphere 2 is fixedly connected with upper bearing (metal) 9, and the inner cavity of upper bearing (metal) 9 is connected with valve rod 7, valve rod 7 Top is fixedly connected with handle 6, and handle 6 is loop configuration, and the outer surface of handle 6 is fixedly connected with anti-skid bulge, and valve body 1 pushes up The middle-end in portion is fixedly connected with valve rod mounting base 4, and the inner surface of valve rod mounting base 4 is fixedly connected with limiting tooth wheel disc 8, and limits Connection is engaged between toothed disc 8 and valve rod 7, and waterproof grommet 5, valve body 1 are fixedly connected between valve rod 7 and valve rod mounting base 4 The both ends at top have been fixedly connected with sleeve 10, and the both ends of 1 bottom of valve body offer preformed groove 14, preformed groove 14 and sleeve 10 Quantity be two, and be to be symmetrical set between two preformed grooves 14 and between two sleeves 10, two are reserved It is setting symmetrical above and below between slot 14 and two sleeves 10, the inner cavity of preformed groove 14 and sleeve 10 is flexibly connected by spring 3 There is supporting rod 11, and the end of supporting rod 11 is fixedly connected with gasket 15, the leakproofness of this ball valve can be improved, while it is four Group flexible sealing, not only increases sealing effect, while also reducing the damaged condition of gasket 15, improves making for this ball valve With the service life, meet the interests of enterprise itself, the outer surface of gasket 15 is coated with the painting of the first polytetrafluoroethylene (PTFE) successively from inside to outside Layer 16, hafnium oxide coating 17 and glass cloth coating 18, can be improved low temperature resistant, the corrosion-resistant and antifriction of sphere 2 and gasket 15 Wiping property, extends the service life of this ball valve.
In use, being fixedly connected with sleeve 10 at the both ends at 1 top of valve body, opened up at the both ends of 1 bottom of valve body Preformed groove 14, and by the effect of spring 3, supporting rod 11 and gasket 15, the leakproofness of this ball valve can be improved, while it is four Group flexible sealing, not only increases sealing effect, while also reducing the damaged condition of gasket 15, improves making for this ball valve With the service life, meet the interests of enterprise itself, the second polytetrafluorethylecoatings coatings have been coated with successively from inside to outside in the outer surface of sphere 2 19, it is poly- to be coated with first successively from inside to outside in the outer surface of gasket 15 for aluminum oxide coating 20 and tungsten carbide coating 21 The low temperature resistant, resistance to of sphere 2 and gasket 15 can be improved in tetrafluoroethene coating 16, hafnium oxide coating 17 and glass cloth coating 18 Corrosion and rub resistance, extend the service life of this ball valve.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace And modification, the scope of the present invention is defined by the appended.

Claims (6)

1. a kind of low temperature resistant fixing ball valve, including valve body(1), it is characterised in that:The valve body(1)The middle-end activity of bottom is installed There is lower bearing(12), the lower bearing(12)Inner cavity pass through connecting rod(13)It is connected with sphere(2), the sphere(2) Outer surface be coated with the second polytetrafluorethylecoatings coatings successively from inside to outside(19), aluminum oxide coating(20)It is applied with tungsten carbide Layer(21), the sphere(2)Top be fixedly connected with upper bearing (metal)(9), the upper bearing (metal)(9)Inner cavity be connected with valve rod (7), the valve rod(7)Top be fixedly connected with handle(6), the valve body(1)The middle-end at top is fixedly connected with valve rod peace Fill seat(4), the valve rod mounting base(4)Inner surface be fixedly connected with limiting tooth wheel disc(8), and limiting tooth wheel disc(8)With valve Bar(7)Between engage connection, the valve body(1)The both ends at top have been fixedly connected with sleeve(10), the valve body(1)Bottom Both ends offer preformed groove(14), the preformed groove(14)And sleeve(10)Inner cavity pass through spring(3)It is connected with Supporting rod(11), and supporting rod(11)End be fixedly connected with gasket(15), the gasket(15)Outer surface from interior It is coated with the first polytetrafluorethylecoatings coatings successively outward(16), hafnium oxide coating(17)With glass cloth coating(18).
2. a kind of low temperature resistant fixing ball valve according to claim 1, it is characterised in that:The handle(6)For loop configuration, And handle(6)Outer surface be fixedly connected with anti-skid bulge.
3. a kind of low temperature resistant fixing ball valve according to claim 1, it is characterised in that:The valve rod(7)It is installed with valve rod Seat(4)Between be fixedly connected with waterproof grommet(5).
4. a kind of low temperature resistant fixing ball valve according to claim 1, it is characterised in that:The preformed groove(14)And sleeve (10)Quantity be two, and two preformed grooves(14)Between and two sleeves(10)Between be to be symmetrical set.
5. a kind of low temperature resistant fixing ball valve according to claim 1 or 4, it is characterised in that:Described two preformed grooves(14) With two sleeves(10)Between be setting symmetrical above and below.
6. a kind of low temperature resistant fixing ball valve according to claim 1 or 4, it is characterised in that:The sphere(2)Through-hole it is straight Diameter and valve body(1)Internal diameter it is identical.
CN201810224769.XA 2018-03-19 2018-03-19 A kind of low temperature resistant fixing ball valve Withdrawn CN108317269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810224769.XA CN108317269A (en) 2018-03-19 2018-03-19 A kind of low temperature resistant fixing ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810224769.XA CN108317269A (en) 2018-03-19 2018-03-19 A kind of low temperature resistant fixing ball valve

Publications (1)

Publication Number Publication Date
CN108317269A true CN108317269A (en) 2018-07-24

Family

ID=62899530

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810224769.XA Withdrawn CN108317269A (en) 2018-03-19 2018-03-19 A kind of low temperature resistant fixing ball valve

Country Status (1)

Country Link
CN (1) CN108317269A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113062995A (en) * 2021-03-15 2021-07-02 滨州永泰不锈钢制品有限公司 Submarine high-pressure ball valve protector
CN113074263A (en) * 2021-03-27 2021-07-06 贺果 Improved double-sealing high-temperature high-pressure elastic ball valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113062995A (en) * 2021-03-15 2021-07-02 滨州永泰不锈钢制品有限公司 Submarine high-pressure ball valve protector
CN113074263A (en) * 2021-03-27 2021-07-06 贺果 Improved double-sealing high-temperature high-pressure elastic ball valve

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Application publication date: 20180724

WW01 Invention patent application withdrawn after publication