CN208687003U - A ball valve with replaceable sealing structure - Google Patents
A ball valve with replaceable sealing structure Download PDFInfo
- Publication number
- CN208687003U CN208687003U CN201821403075.4U CN201821403075U CN208687003U CN 208687003 U CN208687003 U CN 208687003U CN 201821403075 U CN201821403075 U CN 201821403075U CN 208687003 U CN208687003 U CN 208687003U
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- sphere
- sealing structure
- flap
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 50
- 239000000463 material Substances 0.000 claims description 11
- 229910000816 inconels 718 Inorganic materials 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 230000032683 aging Effects 0.000 description 4
- 229910001026 inconel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000000465 moulding Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Taps Or Cocks (AREA)
Abstract
本实用新型涉及阀门技术领域，具体是一种可更换密封结构的球阀，包括阀盖、阀杆、阀体、阀瓣和球体，阀体顶部设有阀盖，所述阀体内设有阀座，阀体内腔具有一容纳球体的空腔，球体设置在空腔内，阀瓣安装在所述球体上，所述阀瓣与阀座之间的接触面相贴合形成密封结构，球体顶部中心开设有一定位孔，所述球体通过该定位孔与阀杆连接，阀盖中心具有一通孔，阀杆位于该通孔内，阀盖与阀体之间通过螺栓连接。在球阀长期使用后密封面磨损老化更换的情况下，通过拆装阀盖，取出阀瓣及阀座，进行部分密封元件的部分更换，本实用新型能快速的在线进行检维修更换作业，且阀瓣和阀座密封结构配套更换，确保密封效果，同时大大节约了经济和时间成本。
The utility model relates to the technical field of valves, in particular to a ball valve with a replaceable sealing structure, comprising a valve cover, a valve stem, a valve body, a valve disc and a ball body, a valve cover is arranged on the top of the valve body, and a valve seat is arranged in the valve body , the cavity of the valve body has a cavity for accommodating the sphere, the sphere is arranged in the cavity, the valve disc is installed on the sphere, the contact surface between the valve disc and the valve seat is fitted to form a sealing structure, and the center of the top of the sphere is opened There is a positioning hole through which the ball is connected to the valve stem, the center of the valve cover has a through hole, the valve stem is located in the through hole, and the valve cover and the valve body are connected by bolts. In the case that the sealing surface of the ball valve is worn out and replaced after long-term use, by disassembling and assembling the valve cover, taking out the valve disc and valve seat, and partially replacing some sealing elements, the utility model can quickly perform online inspection, maintenance and replacement operations, and the valve The sealing structure of the disc and the valve seat are replaced together to ensure the sealing effect, and at the same time, the economic and time costs are greatly saved.
Description
Technical field
The utility model relates to valve technology field, the ball valve of specifically a kind of replaceable sealing structure.
Background technique
Ball valve is mainly used to make the flow direction for cutting off, distributing and changing medium in pipeline, it is only needed with rotation 90
The operation of degree and the rotating torque of very little can close tightly.Ball valve optimum makees switch and uses, it is therefore desirable to keep preferable
Sealing performance.Currently, conventional ball valve is sphere integrated molding, valve seat passes through sphere and valve by being fixedly welded on valve body
Built-up welding is sealed seat respectively, and after a period of use, sealing surface aging, sealing effect is deteriorated, occur in leakage.Once occurring
Replacement needs that valve is integrally dismantled and replaced installation, and time-consuming and laborious, economic cost is also higher.
Utility model content
The purpose of this utility model is exactly to provide a kind of replaceable sealing knot to overcome the above problem in the prior art
The ball valve of structure in the case that sealing surface wear aging is replaced after ball valve long-time service, by dismounting valve deck, takes out flap and valve
Seat, carries out the part replacement of portion sealing element, and the utility model can quickly carry out checking maintenance replacement operation, and flap online
With the mating replacement of valve base sealing structure, it is ensured that sealing effect, while economy and time cost is greatly saved.
To achieve the above object, a kind of ball valve of replaceable sealing structure is provided, including valve deck, valve rod, valve body, flap and
Sphere, the body top are equipped with valve deck, and valve seat is equipped in the valve body, and the body cavity has one to accommodate sphere
Cavity, the sphere are arranged in cavity, and the flap is mounted on the sphere, connecing between the flap and valve seat
Contacting surface fits to form sealing structure, and the sphere top center offers a positioning hole, and the sphere passes through the location hole
Connect with valve rod, the bonnet central has a through-hole, and the valve rod is located in the through-hole, the valve deck and valve body it
Between be bolted.
Preferably, the flap is installed on sphere by screw thread.
Preferably, interior hexagonal counterbore is arranged in the flap center, and the size of the counterbore is φ 26mm, and flap material is adopted
With Inconel 718.
Preferably, sealing ring is equipped between the flap and sphere.
Preferably, the sealing ring uses material for the O-ring of 718 alloy of Inconel.
Preferably, an O-ring seal locating slot is offered on the inside of the flap, is flap locating slot；Correspondingly, exist
An O-ring seal locating slot concentric with the flap locating slot is offered on the sphere, is Sphere orientation slot, described is close
Seal is located in the cavity formed after the flap locating slot is docked with the cooperation of Sphere orientation slot.
Preferably, the depth of the flap locating slot and Sphere orientation slot is 2mm, and diameter is 1/2 nominal diameter.
Preferably, the location hole be provided with sphere top center and diameter it is identical with valve nominal diameter lead to
Hole.
Preferably, the sphere material uses A105 CL1 forging.
Preferably, the sphere bottom integral type is equipped with a locating shaft.
The utility model compared with the existing technology, the advantage is that:
1, the utility model patent is rotated by valve rod drives sphere rotation, and flap is installed on sphere with sphere while turning
Dynamic, ball valve sealing is played in the contact by final flap with valve seat, when wear and aging, which occurs, for sealing structure needs replacing, disassembly
Valve body valve deck connects bolt, takes out flap and valve seat carries out replacement and can put back into.And flap and the mating replacement of valve seat,
Time and economic cost is greatly saved, it can be achieved that online short time maintenance replacement in good seal performance；
2, use material for 718 alloy O-ring of Inconel, flap material uses Inconel 718, and valve seat uses
410SS adds PTFE 25%Class to add 410SS, and sphere uses A105 CL1 forging, by the optimum choice of material, guarantees ball valve
It can use under extreme conditions, using temperature up to 260 DEG C, using pressure up to 25MPa.
Detailed description of the invention
Fig. 1 is the ball valve the schematic diagram of the section structure in the utility model embodiment；
Fig. 2 is the flap valve base sealing structure schematic diagram in the utility model embodiment；
As shown, in figure: 1. valve deck, 2. valve rod, 3. valve body, 4. valve seat, 5. sealing ring, 6. flap, 7. ball
Body.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, the people of the structure and principle of this device to this profession
For be very clearly.It should be appreciated that specific embodiment described herein is only used to explain the utility model, and do not have to
In restriction the utility model.
As shown in Figure 1, in the present embodiment replaceable sealing structure ball valve, including valve deck 1, valve rod 2, valve body 3, valve seat 4,
Sealing ring 5, flap 6 and sphere 7, wherein valve deck 1 is bolted with valve body 3, by dismantling valve deck 1, can directly take out ball
The valves internals such as body, flap and valve seat.Valve rod 2 is set to 1 center of valve deck, and valve seat 4 is fixedly installed in 3 lumen of valve body, and sphere 7 passes through
Location hole is connect with valve rod 2.Diameter through-hole identical with valve nominal diameter is opened in the middle part of sphere 7, and band is rotated by valve rod 2
Dynamic sphere 7 rotates in same direction.6 screw thread of flap is installed on sphere 7, and flap 6 and valve seat 4 are used cooperatively and form ball valve sealing structure,
Flap valve base sealing structure figure is as shown in Figure 2.Sealing ring 5 is set between flap and sphere, and it is close to guarantee that flap is connect with sphere
Envelope.By the replacement to flap 6 and valve seat 4, the replaceable sealing structure of ball valve is realized.
Flap 6 is with sphere 7 using being threadedly coupled, and interior hexagonal counterbore is arranged in 6 center of flap, having a size of φ 26mm, 6 material of flap
Matter uses Inconel 718.An O-ring seal locating slot, depth 2mm are opened on the inside of flap, diameter is 1/2 nominal diameter.
An O-ring seal locating slot concentric with flap locating slot, depth 2mm, diameter are opened on flap installation side sphere simultaneously
For 1/2 nominal diameter.Sealing ring 5 uses material for 718 alloy O-ring of Inconel, and O-ring is placed in sphere and flap positioning
In slot.Sphere 7 is manufactured using A105 CL1 forging, and lower end is equipped with integrated locating shaft, it is ensured that sphere rotation drives flap and valve seat
Precise positioning.Valve seat 4 adds PTFE 25%Class that tri- kinds of materials of 410SS is added to extrude using 410SS, and valve seat 4 and flap 6 are logical
Attrition process is crossed, sealing performance is reliable.
The specific working mode of the present apparatus is as follows: when valve sealing structure occurs aging or needs replacing, passing through valve rod
Rotation drives sphere Open valve, while dismantling the connection bolt of valve body and valve deck, removes valve deck, take out the intracorporal sphere of valve,
Flap and valve seat.Again by interior hexagonal counterbore on flap, flap and sphere are dismantled with allen wrench.Replace same size model
Flap and O-ring seal, screw flap and connect with sphere.Former valve seat is replaced with associated valve seat simultaneously, extrudes and is installed on valve body
Lumen.It is successively installed by location hole and is put into sphere, valve rod and valve deck, screwed the connection bolt of valve deck and valve body, be finally completed
The online replacement of sealing structure.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403075.4U CN208687003U (en) | 2018-08-29 | 2018-08-29 | A ball valve with replaceable sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821403075.4U CN208687003U (en) | 2018-08-29 | 2018-08-29 | A ball valve with replaceable sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208687003U true CN208687003U (en) | 2019-04-02 |
Family
ID=65887608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821403075.4U Expired - Fee Related CN208687003U (en) | 2018-08-29 | 2018-08-29 | A ball valve with replaceable sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208687003U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810668A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Ball valve with replaceable sealing ring |
-
2018
- 2018-08-29 CN CN201821403075.4U patent/CN208687003U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810668A (en) * | 2020-07-25 | 2020-10-23 | 浙江中德自控科技股份有限公司 | Ball valve with replaceable sealing ring |
| CN111810668B (en) * | 2020-07-25 | 2022-02-22 | 浙江中德自控科技股份有限公司 | Ball valve with replaceable sealing ring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190402 Termination date: 20190829 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |