CN113915369A - All-welded ball valve with butterfly check valve function - Google Patents

All-welded ball valve with butterfly check valve function Download PDF

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Publication number
CN113915369A
CN113915369A CN202111134453.XA CN202111134453A CN113915369A CN 113915369 A CN113915369 A CN 113915369A CN 202111134453 A CN202111134453 A CN 202111134453A CN 113915369 A CN113915369 A CN 113915369A
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CN
China
Prior art keywords
valve
wall
hole
check valve
sleeve
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Granted
Application number
CN202111134453.XA
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Chinese (zh)
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CN113915369B (en
Inventor
洪志同
洪志福
孔德宝
洪诗凡
洪诗宇
王志永
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Shenyang Taike Fluid Control Co ltd
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Shenyang Taike Fluid Control Co ltd
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Priority to CN202111134453.XA priority Critical patent/CN113915369B/en
Priority claimed from CN202111134453.XA external-priority patent/CN113915369B/en
Publication of CN113915369A publication Critical patent/CN113915369A/en
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Publication of CN113915369B publication Critical patent/CN113915369B/en
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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
    • F16K5/0605—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
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/03—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member
    • F16K15/033—Check valves with guided rigid valve members with a hinged closure member or with a pivoted closure member spring-loaded
    • 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
    • F16K5/0663—Packings
    • F16K5/0673—Composite packings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to the technical field of ball valves and discloses an all-welded ball valve with a butterfly check valve function, which comprises a valve middle body, wherein a valve sleeve is arranged at one end of a y axis of the valve middle body, a valve rod is assembled on the inner wall of the valve sleeve, the inner end of the valve rod extends into the valve middle body, a ball body is arranged in the valve middle body, a large-diameter through hole and a small-diameter through hole which are communicated with each other are respectively formed at two ends of an x axis of the ball body, a check valve assembly is arranged in the large-diameter through hole and can check a medium in the through hole, the check valve assembly comprises a rotating shaft, two ends of the rotating shaft are respectively and fixedly connected with the inner end of the valve rod and the inner end of the large-diameter through hole, and a group of disc plates matched with the large-diameter through hole are arranged on the outer wall of the rotating shaft. Through set up check valve subassembly in the major diameter through-hole, make this valve have the check valve function promptly, have the stop valve function again, the flow resistance coefficient is little, need not to cooperate other valves during the use, practices thrift installation space.

Description

All-welded ball valve with butterfly check valve function
Technical Field
The invention relates to the technical field of ball valves, in particular to an all-welded ball valve with a butterfly check valve function.
Background
In the fluid system, stop valve and check valve are often used, use a plurality of valves to occupy great space, increase the weight of equipment, be unfavorable for the use in fields such as navigation, some check valves have in the use not strict, reveal the scheduling problem, the flow resistance coefficient of over-and-under type check valve is great, in big city heating system, so-called inch of soil is gold, save space is the money that saves, consequently, it is little to design a flow resistance coefficient, multi-functional valve both can save space, can alleviate the weight of equipment again, accord with the energy-conserving requirement that the country advocated.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an all-welded ball valve with a butterfly check valve function, which not only has the check valve function, but also has the stop valve function, has small flow resistance coefficient, does not need to be matched with other valves during use, saves the installation space, is integrally welded, does not have external leakage, has more compact valve structure and convenient installation and construction, has the same valve body connecting material as the pipeline material, does not generate the phenomenon of uneven stress after welding, greatly improves the safety performance of the pipeline, and solves the problems that the existing valve has single function, needs to be matched with other valves during use, has larger required installation space, has poorer sealing property and is easy to leak.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an all-welded ball valve with butterfly check valve function, includes the valve body in the valve, the one end of the y axle of the valve body in is equipped with the valve barrel, the inner wall of valve barrel is equipped with the valve rod, the inner of valve rod extends to and is equipped with the spheroid in the valve.
Two ends of the x axis of the sphere are respectively provided with a large-diameter through hole and a small-diameter through hole which are communicated.
The inside of big footpath through-hole is equipped with check valve assembly, check valve assembly can be to the medium non return in the through-hole, check valve assembly includes the pivot, the both ends of pivot respectively with the inner of valve rod and the inner fixed connection of big footpath through-hole, the outer wall of pivot is equipped with a set of and big footpath through-hole matched with dish board.
Above-mentioned scheme is further optional, the dish board is rotated with the pivot through the compound copper sheathing of self-lubricating and is connected, the compound copper sheathing of self-lubricating is including cup jointing the copper sheathing of pivot, the outer wall of copper sheathing and the inner outer wall fixed connection of dish board, the inner wall of copper sheathing is equipped with the graphite layer.
The scheme is further optional, the outer wall of the rotating shaft is sleeved with a coil spring, and two extending ends of the coil spring respectively act on the outer walls of the two disc plates to apply elastic force to the two disc plates in the direction of the small-diameter through hole.
The scheme is further optional, a check valve seat is arranged on the inner wall of the right end of the large-diameter hole, when the two disc plates are positioned on the same plane under the elastic action of the coil spring, the two disc plates form a complete circular plate, and the outer wall of the circular plate is attached to the outer wall of the check valve seat.
In a further optional manner, the two ends of the x-axis of the valve middle body are respectively provided with an inlet side sleeve and an outlet side sleeve opposite to the small-diameter through hole and the large-diameter through hole, and the inner ends of the inlet side sleeve and the outlet side sleeve are respectively provided with a sealing component for sealing the ball.
The sealing assembly comprises a mounting groove, a disk spring, a sealing ring and a supporting ring for supporting the sealing ring, the mounting groove is formed in the inner side inner wall of the sleeve pipe, the sealing ring, the supporting ring and the disk spring are sequentially assembled in the mounting groove from inside to outside, the outer wall of the inner end of the supporting ring is connected with the inner wall of the sealing ring in an inserting mode, the outer wall of the outer end of the supporting ring is attached to the outer wall of the disk spring, and the outer wall of the inner end of the sealing ring is attached to the outer wall of the ball body.
The scheme is further optional, the valve middle body, the valve sleeve, the inlet side sleeve and the outlet side sleeve adopt an integral welding process structure, and the welding adopts submerged arc automatic welding and V-shaped welding grooves and is matched with air cooling and air cooling modes for welding.
The scheme is further optional, the valve rod is made of ASTMA420 materials, surface tungsten carbide treatment is carried out, the surface hardness can reach HR52, the valve sleeve is made of a self-lubricating back lining PTFE metal shaft sleeve, a sealing element is arranged between the valve sleeve and the valve rod, and the sealing element is made of a perfluoro rubber sealing element.
Compared with the prior art, the invention provides an all-welded ball valve with a butterfly check valve function, which has the following beneficial effects:
1. this all-welded ball valve with butterfly check valve function through setting up the big footpath through-hole and the path through-hole that are linked together in the spheroid, sets up check valve subassembly in big footpath through-hole, makes this valve have the check valve function promptly, has the stop valve function again, and the flow resistance coefficient is little, need not to cooperate other valves during the use, practices thrift installation space.
2. This all-welded ball valve with butterfly check valve function all sets up seal assembly through the inner at entering side sleeve and discharge side sleeve, realizes double containment, and when arbitrary seal assembly became invalid, another seal assembly can play sealed effect to the valve wantonly, guarantees that the valve is sealed.
3. The sealing assembly is designed by combining a sealing ring, a support ring and a disk spring, the support ring enables the sealing ring to keep a sealing shape, and the disk spring enables the sealing ring to be always in a spring ball body, so that the sealing effect is guaranteed.
4. The integral welding process structure is adopted, so that the internal and external sealing of the valve is greatly improved, and the external leakage phenomenon is avoided.
5. The valve body welding adopts submerged arc automatic welding and V-shaped welding grooves, the welding is carried out in a manner of air cooling and air cooling, the temperature of an infrared welding layer is controlled, and the welding quality of the welding layer is ensured by multiple welding layers. The ultra-narrow gap welding design structure is adopted, and the welding process structure regulation which is free of postweld heat treatment in the ASM positive specification is met.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a left side view of a sphere in accordance with the present invention;
FIG. 3 is a front cross-sectional view of a sphere in accordance with the present invention;
fig. 4 is a schematic structural diagram of the ball seal assembly of the present invention.
In the figure: 1. a valve middle body; 2. entering a side sleeve; 3. a discharge side sleeve; 4. a valve housing; 5. a valve stem; 6. A sphere; 7. a large-diameter through hole; 8. a small diameter through hole; 9. a seal assembly; 91. a disc spring; 92. a seal ring; 93. a support ring; 94. mounting grooves; 10. a rotating shaft; 11. a plate; 12. a check valve seat; 13. a copper sleeve; 14. a graphite layer; 15. a coil spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-4, an all-welded ball valve with a butterfly check valve function includes a valve middle body 1, a valve sleeve 4 is disposed at one end of the y-axis of the valve middle body 1, a valve rod 5 is mounted on an inner wall of the valve sleeve 4, and an inner end of the valve rod 5 extends to the interior of the valve middle body 1 and is provided with a ball 6.
Two ends of the x axis of the sphere 6 are respectively provided with a large-diameter through hole 7 and a small-diameter through hole 8 which are communicated with each other.
The inside of big footpath through-hole 7 is equipped with check valve assembly, check valve assembly can be to medium non return in the through-hole, check valve assembly includes pivot 10, the both ends of pivot 10 respectively with the inner of valve rod 5 and the inner fixed connection of big footpath through-hole 7, the outer wall of pivot 10 is equipped with a set of dish board 11 with big footpath through-hole 7 matched with, when the medium backward flow, dish board 11 and the inner joint of big footpath through-hole 7 mutually, thereby realize the non return, this valve has the check valve function promptly, the stop valve function has again, the flow resistance coefficient is little, need not to cooperate other valves during the use, practice thrift installation space.
Referring to fig. 2 and 3, the disks 11 are rotatably connected to the shaft 10 through self-lubricating composite copper sleeves, each disk 11 has two self-lubricating composite copper sleeves, and four self-lubricating composite copper sleeves are alternately arranged, each self-lubricating composite copper sleeve includes a copper sleeve 13 sleeved on the shaft 10, an outer wall of the copper sleeve 13 is fixedly connected to an inner outer wall of the disk 11, an inner wall of the copper sleeve 13 is provided with a graphite layer 14, the graphite layer 14 has good lubricity to reduce a flow resistance coefficient, the outer wall of the shaft 10 is sleeved with a coil spring 15, two extending ends of the coil spring 15 respectively act on outer walls of the two disks 11 to apply elastic force to the two disks 11 in a direction of the small-diameter through hole 8, a check valve seat 12 is disposed on an inner wall of a right end of the large-diameter hole 7, when the two disks 11 are in a same plane under the elastic force of the coil spring 15, the two disks 11 form a complete circular plate, and the outer walls of the circular plate are attached to the outer wall of the check valve seat 12, thereby ensuring the non-return sealing performance.
Referring to fig. 1 and 4, an inlet side sleeve 2 and an outlet side sleeve 3 opposite to a small-diameter through hole 8 and a large-diameter through hole 7 are respectively arranged at two ends of an x-axis of a valve middle body 1, sealing components 9 for sealing a ball 6 are respectively arranged at the inner ends of the inlet side sleeve 2 and the outlet side sleeve 3, the two sealing components 9 realize double sealing for the ball 6, when any one sealing component fails, the other sealing component can play a sealing effect for the valve to ensure the sealing of the valve, the sealing components 9 comprise mounting grooves 94, disk springs 91, sealing rings 92 and support rings 93 for supporting the sealing rings 92, the mounting grooves 94 are arranged on the inner side inner walls of the sleeves, the sealing rings 92, the support rings 93 and the disk springs 91 are sequentially arranged in the mounting grooves 94 from inside to outside, the inner end outer walls of the support rings 93 are inserted into the inner walls of the sealing rings 92, the outer walls of the support rings 93 are attached to the outer walls of the disk springs 91, the outer wall of the inner end of the sealing ring 92 is attached to the outer wall of the ball body 6, the sealing ring 92 keeps a sealing shape by the support ring 93, and the sealing ring 92 is always spring on the ball body 6 by the belleville spring 91, so that the sealing effect is guaranteed. The sealing ring 92 is made of PTFE + 25% carbon fiber polymer composite material and has excellent sealing performance and heat resistance, the disc spring 91 is formed by punching high-elasticity 50CRV material, the surface hardness reaches HB45-48 through a heat treatment process, and the surface is plated with ENP.
Referring to fig. 1, the valve middle body 1, the valve sleeve 4, the inlet side sleeve 2 and the outlet side sleeve 3 adopt an integral welding process structure, the welding adopts a submerged arc automatic welding and a V-shaped welding groove, the welding is carried out by matching with an air cooling and air cooling mode, the temperature of an infrared welding layer is controlled, a plurality of welding layers are formed, the welding quality of the welding layers is ensured, an ultra-narrow gap welding design structure is adopted, the welding process structure specification of the ASM positive specification about the avoidance of postweld heat treatment is met, the valve rod 5 is made of ASTMA420 material and is subjected to surface tungsten carbide treatment, the surface hardness can reach HR52, the valve sleeve 4 adopts a back lining PTFE metal shaft sleeve with self-lubrication, a sealing element is arranged between the valve sleeve and the valve rod, and the sealing element adopts a perfluorinated rubber sealing element.
The working principle is as follows: before the valve is used, the valve body is connected into a pipeline by welding, the phenomenon of uneven stress is not generated after welding, the pipeline deformation is not generated due to external factors caused by vehicles passing through the ground or earthquakes, the pipeline safety performance is greatly improved, when the valve is used, the valve rod 5 is rotated to enable the through holes to correspond to the sleeves, a medium enters the small-diameter through hole 8 from the inlet side sleeve 2, the disc plates 11 are rotated and opened by the thrust of the medium, the medium sequentially flows through the large-diameter through hole 7 and the outlet side sleeve 3 to be discharged out of the valve, the ball body 6 is driven to rotate by rotating the valve rod 5, the function of the stop valve can be realized, when the medium reflows, the two disc plates 11 are reset under the action of the elasticity of the coil spring 15 and the thrust of the medium, a complete circular plate is formed and is attached to the outer wall of the valve seat 12 of the check valve to realize the sealing and the check valve function, and the valve is used without being matched with other valves, practice thrift installation space, and whole full weld, there is not the outside condition of revealing, valve structure is compacter, the construction of being convenient for installation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An all-welded ball valve with a butterfly check valve function comprises a valve middle body, wherein a valve sleeve is arranged at one end of the y axis of the valve middle body, a valve rod is assembled on the inner wall of the valve sleeve, and the inner end of the valve rod extends to the interior of the valve middle body and is internally provided with a ball body;
two ends of the x axis of the sphere are respectively provided with a large-diameter through hole and a small-diameter through hole which are communicated with each other;
the inside of big footpath through-hole is equipped with check valve assembly, check valve assembly can be to the medium non return in the through-hole, check valve assembly includes the pivot, the both ends of pivot respectively with the inner of valve rod and the inner fixed connection of big footpath through-hole, the outer wall of pivot is equipped with a set of and big footpath through-hole matched with dish board.
2. An all-welded ball valve having a butterfly check valve function according to claim 1, wherein: the dish board is connected through self-lubricating compound copper sheathing and pivot rotation, self-lubricating compound copper sheathing is including the copper sheathing that cup joints the pivot, the outer wall of copper sheathing and the inner outer wall fixed connection of dish board, the inner wall of copper sheathing is equipped with the graphite layer.
3. An all-welded ball valve having a butterfly check valve function according to claim 2, wherein: and the outer wall of the rotating shaft is sleeved with a coil spring, and two extending ends of the coil spring respectively act on the outer walls of the two disc plates to apply elastic force to the two disc plates in the direction of the small-diameter through hole.
4. An all-welded ball valve having a butterfly check valve function according to claim 3, wherein: the inner wall of the right end of the large-diameter hole is provided with a check valve seat, when the two disc plates are positioned on the same plane under the action of the elastic force of the coil spring, the two disc plates form a complete circular plate, and the outer wall of the circular plate is attached to the outer wall of the check valve seat.
5. An all-welded ball valve having a butterfly check valve function according to claim 1, wherein: and the two ends of the x axis of the valve middle body are respectively provided with an inlet side sleeve and an outlet side sleeve which are opposite to the small-diameter through hole and the large-diameter through hole, and the inner ends of the inlet side sleeve and the outlet side sleeve are respectively provided with a sealing component for sealing the ball body.
6. An all-welded ball valve having a butterfly check valve function according to claim 5, wherein: the sealing assembly comprises a mounting groove, a disk spring, a sealing ring and a supporting ring for supporting the sealing ring, the mounting groove is formed in the inner side inner wall of the sleeve, the sealing ring, the supporting ring and the disk spring are sequentially assembled in the mounting groove from inside to outside, the outer wall of the inner end of the supporting ring is connected with the inner wall of the sealing ring in an inserting mode, the outer wall of the outer end of the supporting ring is attached to the outer wall of the disk spring, and the outer wall of the inner end of the sealing ring is attached to the outer wall of the ball body.
7. An all-welded ball valve having a butterfly check valve function according to claim 5, wherein: the valve middle body, the valve sleeve, the inlet side sleeve and the outlet side sleeve adopt an integral welding process structure, and the welding adopts submerged arc automatic welding and V-shaped welding grooves and is matched with air cooling and air cooling modes for welding.
8. An all-welded ball valve having a butterfly check valve function according to claim 1, wherein: the valve rod is made of ASTMA420 materials, surface tungsten carbide treatment is carried out, the surface hardness can reach HR52, the valve sleeve is made of a self-lubricating back lining PTFE metal shaft sleeve, a sealing element is arranged between the valve sleeve and the valve rod, and the sealing element is made of a perfluoro rubber sealing element.
CN202111134453.XA 2021-09-27 All-welded ball valve with butterfly check valve function Active CN113915369B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111134453.XA CN113915369B (en) 2021-09-27 All-welded ball valve with butterfly check valve function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111134453.XA CN113915369B (en) 2021-09-27 All-welded ball valve with butterfly check valve function

Publications (2)

Publication Number Publication Date
CN113915369A true CN113915369A (en) 2022-01-11
CN113915369B CN113915369B (en) 2024-05-24

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CN105570507A (en) * 2016-03-07 2016-05-11 北京市阀门总厂股份有限公司 Novel coal chemical industry water granulated slag valve dustproof device for iron and steel plant
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CN208153767U (en) * 2018-01-10 2018-11-27 沃尔芙阀门制造有限公司 A kind of full-bore welding ball valve
CN208793681U (en) * 2018-06-25 2019-04-26 伊瑞斯阀门（中国）有限公司 Buried double release all-welded ball valves
CN110886867A (en) * 2019-11-14 2020-03-17 董服义 Ball valve with check function
CN112648413A (en) * 2020-12-29 2021-04-13 盐城瑞德石化机械有限公司 Large-caliber ultralow-temperature high-pressure metal sealing butterfly check valve
CN112648412A (en) * 2020-12-29 2021-04-13 盐城瑞德石化机械有限公司 Ultra-low temperature and ultra-high pressure metal sealing butterfly check valve

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Publication number Priority date Publication date Assignee Title
CN1536254A (en) * 2003-04-10 2004-10-13 宏晟兴精密工业股份有限公司 Ball valve with stopping device
CN1563757A (en) * 2004-03-26 2005-01-12 卓旦春 Check ball valve
CN203297682U (en) * 2013-06-04 2013-11-20 方圆阀门集团有限公司 Check valve without pin hole
CN204140926U (en) * 2014-09-01 2015-02-04 四川赛尔阀门制造有限公司 Full welding direct-buried ball valve
CN204358176U (en) * 2014-11-27 2015-05-27 天津银河阀门有限公司 A kind of valve body full lining glue butterfly is to folder double-flap check valve
CN105570507A (en) * 2016-03-07 2016-05-11 北京市阀门总厂股份有限公司 Novel coal chemical industry water granulated slag valve dustproof device for iron and steel plant
CN206299826U (en) * 2016-12-16 2017-07-04 浙江万盛机械有限公司 A kind of ball valve
CN208153767U (en) * 2018-01-10 2018-11-27 沃尔芙阀门制造有限公司 A kind of full-bore welding ball valve
CN208793681U (en) * 2018-06-25 2019-04-26 伊瑞斯阀门（中国）有限公司 Buried double release all-welded ball valves
CN110886867A (en) * 2019-11-14 2020-03-17 董服义 Ball valve with check function
CN112648413A (en) * 2020-12-29 2021-04-13 盐城瑞德石化机械有限公司 Large-caliber ultralow-temperature high-pressure metal sealing butterfly check valve
CN112648412A (en) * 2020-12-29 2021-04-13 盐城瑞德石化机械有限公司 Ultra-low temperature and ultra-high pressure metal sealing butterfly check valve

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