CN203453518U - Plug valve - Google Patents
Plug valve Download PDFInfo
- Publication number
- CN203453518U CN203453518U CN201320266760.8U CN201320266760U CN203453518U CN 203453518 U CN203453518 U CN 203453518U CN 201320266760 U CN201320266760 U CN 201320266760U CN 203453518 U CN203453518 U CN 203453518U
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- CN
- China
- Prior art keywords
- valve
- valve seat
- rod
- seat
- valve rod
- 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
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Abstract
The utility model belongs to the technical field of valve manufacture. The plug valve comprises a valve body, a pad, a valve rod, a valve seat, a baffle ring, a baffle plate, a filler pad, a disc-shaped spring, a filler bolt, a locking nut, a handle assembly and a cutting sleeve assembly. The baffle plate and the baffle ring are embedded in the valve seat to prevent excess compression of the valve seat, thereby preventing permanent deformation of the valve seat; an end part of the valve rod placed in the valve body is in a structure of a cylinder and is provided with a round flow path hole for medium to flow; a shaft shoulder structure is added to the valve rod to ensure stability of positioned installation of the valve rod; the valve body and the rod are made of No. 316 stainless steel to guarantee rigidity and hardness of the valve; and the valve seat and the pad are made from polytetrafluoroethylene to ensure seal reliability of the valve and self-lubrication of friction. A traditional structure is improved in a way that the valve rod is separated from the valve seat, thereby facilitating maintenance and examination of the valve; manufacturing technology is simplified, so production cost is largely reduced; and the filler pad is directly arranged on the valve seat, so pressure on the valve rod is greatly reduced, thereby improving operation hand feeling.
Description
Technical field
The utility model belongs to technical field of valve manufacturing.
Background technique
Ball valve is that open-shut device (spheroid) is driven by valve rod, and the valve rotating around valve rod axis.The advantages such as it is little that ball valve has fluid resistance, simple in structure, compact, and sealing is reliable, and Operation and Maintenance is convenient, applied widely.Especially instrument ball valve, because it is simple in structure, seals and is reliably widely used in the industries such as machinery, chemical industry, oil.
Ball valve is divided into fixing ball valve and floating ball valve by structural type.In fixing ball valve, spheroid is fixed, during work, the active force that before valve, hydrodynamic pressure produces on spheroid all passes to valve rod, avoids spheroid to produce Unidirectional acting force to valve seat, thereby valve seat can not bear excessive pressure, so the torque of fixing ball valve is little, valve seat distortion is little, and sealability is stable, long service life, is applicable to high pressure occasion.According to traditional manufacturing process, the processing of sphere technique on valve rod is comparatively complicated; The processing of integral type valve seat can only complete in die sinking injection moulding, and cost is relatively high; During maintenance, cannot change valve seat; The squeezing action of valve seat and spheroid is larger, causes the switch of ball valve to need larger torsion, and feel is poor.
Model utility content
The utility model provides a kind of simple in structure, easy to operate and stopcock that cost of production is lower for solving the problems of the technologies described above.
For achieving the above object, technical solution adopted in the utility model is as follows:
Described stopcock comprises: valve body, pad, valve rod, valve seat, back-up ring, baffle plate, Packing seat, belleville spring, filler bolt, locking nut, Handleset, ferrule assemblies.Described valve rod is provided with shaft shoulder structure; Described pad is arranged between the described valve rod shaft shoulder and described valve body; Described baffle plate, back-up ring are embedded in described valve seat; Described valve seat and described valve rod are by described valve rod shaft shoulder location and installation; Described Packing seat is arranged on described valve seat; Described belleville spring is arranged on described Packing seat; Described filler bolt is arranged on described belleville spring, and is connected with described valve body by screw thread; Described locking nut is connected with described valve body by screw thread; The described valve rod the other end is connected with described Handleset; Described ferrule assemblies is connected with described valve body by screw thread.
The embedded described baffle plate of described valve seat and described back-up ring, prevent that described valve seat compression is excessive, and permanent deformation occurs.Manufacture adds that valve seat is without die sinking injection moulding described in man-hour, and simplified processing process, saves process time, effectively reduces costs.When Maintenance and Repair, can realize the quick-replaceable of valve seat simultaneously.
Described pad is arranged between described valve rod and described valve body, can avoid intermetallic direct contact, improves operating handle.
The described valve rod end being installed in valve body is cylindrical structure, and is provided with circular flow channel hole, is convenient to medium circulation.Valve rod increases shaft shoulder structure, guarantees the reliability of its location and installation.
The beneficial effects of the utility model are:
(1) take above-mentioned design, improved traditional structural design, simplified processing technology, significantly reduce production costs.
(2) when Maintenance and Repair, can realize the separated of valve rod and valve seat, maintain easily personnel's maintenance.
(3) improved traditional structural design, made Packing seat directly act on valve seat, the active force of abated effect on valve rod, improves operating handle greatly.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Description of reference numerals:
1-ferrule assemblies 2-valve body 3-pad 4-valve rod 5-valve seat 6-back-up ring/baffle plate
7-Packing seat 8-belleville spring 9-locking nut 10-filler bolt 11-Handleset
Embodiment
Pad 3 is arranged between valve body 2 and the shaft shoulder structure of valve rod 4, and valve rod 4 is located by connecting with the shaft shoulder structure of valve seat 5 by valve rod 4.Back-up ring, baffle plate 6 are arranged on valve seat 5 surroundings, and Packing seat 7 is arranged on valve seat 5, and belleville spring 8 is arranged on Packing seat 7, and filler bolt 10 is arranged on belleville spring 8, and locking nut 9 is connected with valve body 2 by screw thread, and valve rod 4 the other ends are connected with Handleset 11; Ferrule assemblies 1 is threaded connection with valve body 2.
During installation, need tighten filler bolt 10, make buffer function that active force passes through belleville spring 8 on Packing seat 7, Packing seat 7 extruding valve seats make valve seat 5 that elastic strain occur, and further make valve seat 5 endoporus and valve rod 4, valve seat 5 cylindricals and valve body 2 fit tightly, and realize soft seal.
The utility model is further set to: valve body 2 is 316 stainless steels with the material of valve rod 4, guarantees intensity and the hardness of valve.Valve seat 5 is teflon with the material of pad 3, guarantees the reliability of valve seal and the self lubricity of friction.Working procedure is as follows: Handleset 11 rotates, and band ovable valve stem 4 rotates, and makes the runner hole of valve rod 4 and the runner hole of valve body 2 communicate or stagger, and completes the open and close of valve.
Claims (2)
1. a stopcock, comprise valve body, pad, valve rod, valve seat, back-up ring, baffle plate, Packing seat, belleville spring, locking nut, filler bolt, Handleset, ferrule assemblies, it is characterized in that: described in the valve rod end that is installed in valve body be cylindrical structure, and be provided with circular flow channel hole.
2. stopcock according to claim 1, is characterized in that: the material of described valve body and described valve rod is 316 stainless steels, and the material of described valve seat and described pad is teflon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320266760.8U CN203453518U (en) | 2013-05-04 | 2013-05-04 | Plug valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320266760.8U CN203453518U (en) | 2013-05-04 | 2013-05-04 | Plug valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453518U true CN203453518U (en) | 2014-02-26 |
Family
ID=50133394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320266760.8U Expired - Fee Related CN203453518U (en) | 2013-05-04 | 2013-05-04 | Plug valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453518U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879519A (en) * | 2015-05-29 | 2015-09-02 | 扬中市第一蝶阀厂有限公司 | Simple liquid circuit cut-off ball valve |
| CN105443794A (en) * | 2014-09-29 | 2016-03-30 | 大唐国际化工技术研究院有限公司 | Top-mounted O-shaped ball valve and manufacturing and assembling method thereof |
| CN105526386A (en) * | 2014-09-29 | 2016-04-27 | 大唐国际化工技术研究院有限公司 | Sampling device and sampling method for industrial analysis |
| CN105526387A (en) * | 2014-09-29 | 2016-04-27 | 大唐国际化工技术研究院有限公司 | Industrial analysis sampling device and method |
| CN110242780A (en) * | 2019-07-11 | 2019-09-17 | 沅亨流体科技（昆山）有限公司 | A kind of high pressure needle valve Fast Installation structure |
-
2013
- 2013-05-04 CN CN201320266760.8U patent/CN203453518U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443794A (en) * | 2014-09-29 | 2016-03-30 | 大唐国际化工技术研究院有限公司 | Top-mounted O-shaped ball valve and manufacturing and assembling method thereof |
| CN105526386A (en) * | 2014-09-29 | 2016-04-27 | 大唐国际化工技术研究院有限公司 | Sampling device and sampling method for industrial analysis |
| CN105526387A (en) * | 2014-09-29 | 2016-04-27 | 大唐国际化工技术研究院有限公司 | Industrial analysis sampling device and method |
| CN105526387B (en) * | 2014-09-29 | 2018-06-26 | 大唐国际化工技术研究院有限公司 | Industrial Analysis sample devices and the method for sampling |
| CN105443794B (en) * | 2014-09-29 | 2018-06-26 | 大唐国际化工技术研究院有限公司 | Roof-mounted O-shaped ball valve and its manufacture assembly method |
| CN104879519A (en) * | 2015-05-29 | 2015-09-02 | 扬中市第一蝶阀厂有限公司 | Simple liquid circuit cut-off ball valve |
| CN110242780A (en) * | 2019-07-11 | 2019-09-17 | 沅亨流体科技（昆山）有限公司 | A kind of high pressure needle valve Fast Installation structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20180504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |