CN2338573Y - Sealing means for hard sealing ball valve - Google Patents
Sealing means for hard sealing ball valve Download PDFInfo
- Publication number
- CN2338573Y CN2338573Y CN 98207700 CN98207700U CN2338573Y CN 2338573 Y CN2338573 Y CN 2338573Y CN 98207700 CN98207700 CN 98207700 CN 98207700 U CN98207700 U CN 98207700U CN 2338573 Y CN2338573 Y CN 2338573Y
- Authority
- CN
- China
- Prior art keywords
- sealing
- valve
- ball valve
- utility
- bulb stopper
- 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 - Lifetime
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- Taps Or Cocks (AREA)
Abstract
The utility model relates to a hard sealing ball valve sealing device, comprising a sealing seat which is arranged in a valve body, and a valve core which is connected with a valve rod. The valve core is composed of a ball plug and sealing flap which are respectively arranged at both sides of the ball valve. A dovetail groove is connected between the ball plug and the sealing flap. The utility model overcomes the defects that the ordinary ball valve hard sealing device is easy to abrade. The utility model has the advantages of simple structure, long service life and no leakage.
Description
The utility model relates to a kind of hard seal ball valve sealing means.
The seal arrangement of ordinary ball valve, generally all be based on soft seal, generally these have flexible nonmetallic material and make sealing seat with teflon or rubber, by them spool is clamped, reach sealing, still, because these nonmetallic material can not be born high temperature or high pressure, thereby dwindled their using scope greatly, therefore just required hard seal ball valve to replace, to adapt to the Environmental Conditions of High Temperature High Pressure.Traditional hard seal ball valve, all be to copy the nonmetallic material encapsulating method, with elastic element sealing seat is pressed in tightly and reaches sealing on the spool, but when valve opens or closes at every turn, all will produce sliding friction strong between spheroid and sealing seat, the damage sealing surface, thus cause valve very easily to leak, have a strong impact on working life.
The purpose of this utility model is the above-mentioned defective that overcomes prior art, thereby a kind of hard seal ball valve sealing means of simple in structure, no damage by friction is provided.
The utility model comprises the sealing seat and the spool that is connected with valve rod that is arranged in the valve body, and spool is made of bulb stopper and the sealing lobe that is separately positioned on the bulb stopper both sides, connects by dovetail groove between bulb stopper and the sealing lobe.
Further illustrate particular content of the present utility model below in conjunction with drawings and Examples.
Fig. 1 is the structural representation after the utility model and the ball valve assembling;
Fig. 2 is the A-A sectional view of Fig. 1.
As shown in the figure, the utility model comprises the sealing seat 2 and the spool that links to each other with valve rod 3 that is arranged in the valve body 1, and spool is made of bulb stopper 4 and the sealing lobe 5 that is separately positioned on bulb stopper 4 both sides, and bulb stopper 4 and sealing between the lobe 5 connects by dovetail groove.Moment of torsion when closing for reducing valve opening, the bi-side of bulb stopper 4 and sealing lobe 5 are designed to 5 degree.When valve closing, bulb stopper 4 and sealing lobe 5 rotate under the drive of valve rod 3 and move down, and bulb stopper 4 will seal lobe 5 simultaneously and strut the sealing seat 2 that is close in the valve body 1, reach forced seal.Otherwise bulb stopper 4 rises, and sealing lobe 5 shrinks valve opening.
The utility model makes ball valve be greatly improved at aspects such as using scope, working lifes by above-mentioned concrete structure, is particularly suitable for using in the environment of High Temperature High Pressure opening and closing often.
Claims (2)
1, a kind of hard seal ball valve sealing means, comprise the sealing seat and the spool that links to each other with valve rod that are arranged in the valve body, it is characterized in that: spool is made of bulb stopper (4) and the sealing lobe (5) that is separately positioned on bulb stopper (4) both sides, and bulb stopper (4) and sealing between the lobe (5) connects by dovetail groove.
2, hard seal ball valve sealing means according to claim 1 is characterized in that the bi-side of bulb stopper (4) and sealing lobe (5) are designed to 5 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207700 CN2338573Y (en) | 1998-08-03 | 1998-08-03 | Sealing means for hard sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98207700 CN2338573Y (en) | 1998-08-03 | 1998-08-03 | Sealing means for hard sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2338573Y true CN2338573Y (en) | 1999-09-15 |
Family
ID=33963576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98207700 Expired - Lifetime CN2338573Y (en) | 1998-08-03 | 1998-08-03 | Sealing means for hard sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2338573Y (en) |
-
1998
- 1998-08-03 CN CN 98207700 patent/CN2338573Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |