CN201170343Y - Ball-valve for reverse screwed valve base - Google Patents
Ball-valve for reverse screwed valve base Download PDFInfo
- Publication number
- CN201170343Y CN201170343Y CNU2008200431962U CN200820043196U CN201170343Y CN 201170343 Y CN201170343 Y CN 201170343Y CN U2008200431962 U CNU2008200431962 U CN U2008200431962U CN 200820043196 U CN200820043196 U CN 200820043196U CN 201170343 Y CN201170343 Y CN 201170343Y
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- valve seat
- right channel
- thread
- 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 discloses a left-hand thread valve seat ball valve, which comprises a valve body, a sphere, a valve cover, a valve seat, a valve rod and a joint, wherein the valve body has a cavity, a left channel and a right channel; the sphere is arranged inside the cavity; the right channel of the valve body has an internal thread and an external thread; the valve seat has an external thread, and is arranged inside the right channel of the valve body so as to be matched with the internal thread of the right channel; the valve seat is in contact fit with the sphere; the valve cover is in assembled with the left channel and the right channel of the valve body through screw threads, and the joint is also connected with the left channel and the right channel; moreover, the direction of the internal thread of the right channel of the valve body is opposite to that of the external thread of the right channel. Therefore, the valve seat does not rotate along with the rotation of the valve cover, and the fit dimension between the sphere and the valve seat does not change, thereby causing no failure such as leakage or blockage.
Description
Technical field
The utility model relates to ball valve, especially a kind of ball valve with left-hand thread valve seat.
Background technique
The working principle of ball valve is to make valve unimpeded or inaccessible by spinning ball.The ball valve switch is light, and volume is little, can make very heavy caliber, and sealing is reliable, and is simple in structure, easy to maintenance, and sealing surface and the sphere closed state of being everlasting is difficult by the medium erosion, is widely used in every profession and trade.Common ball valve comprises parts such as valve body, spheroid, valve rod, valve seat, valve gap, joint, and internal thread and outside thread are arranged on the valve body, and the screw-internal thread fit of valve seat and valve body is installed, and valve gap cooperates installation with the outside thread of valve body.Because the internal thread of the right passage of valve body is identical with externally threaded hand of spiral, when the rotation valve gap, valve gap can take place drive joint and valve seat rotation, cause the fit dimension of valve seat and spheroid to change, cause the ball valve fault.
Summary of the invention
The purpose of this utility model provides a kind of ball valve, and its valve seat can not rotate along with the rotation of joint.
For achieving the above object, the technical solution of the utility model is: a kind of left-hand thread valve seat ball valve, comprise valve body, spheroid, valve gap, valve seat, valve rod and joint, valve body have cavity and about two passages, spheroid places cavity, the right passage of valve body has internal thread and outside thread, valve seat has outside thread and is installed in the right passage of valve body right passage screw-internal thread fit with valve body, valve seat cooperates with spheroid contact seal, valve gap is connected with the left and right sides passage of valve body with the left and right sides passage screw fit of valve body and with joint, and the internal thread of the right passage of valve body is opposite with externally threaded hand of spiral.
The beneficial effects of the utility model are, adopt this technological scheme, because the internal thread of the right passage of valve body is opposite with externally threaded hand of spiral, so valve gap is different with the moving direction of valve seat, when the rotation valve gap, the phenomenon that valve gap drives joint and valve seat rotation just can not take place, and the fit dimension between spheroid and the valve seat just can not change, and therefore can not leak or fill in dead fault.
Description of drawings
Fig. 1 is a sectional view of the present utility model;
Fig. 2 is a stereogram of the present utility model.
Embodiment
As shown in the figure, the utility model left-hand thread valve seat ball valve comprises valve body 1, spheroid 2, valve gap 3, valve seat 4, valve rod 5, handle 6 and joint 7, valve body have cavity 13 and about two passages 11,12, spheroid places cavity 13, and spheroid top links to each other with valve rod, and valve rod links to each other with handle again, valve rod can be adjusted the rotation of spheroid, spheroid has through hole, and this through hole connects the left and right sides passage of valve body, 90 ° of handle with sleeves, spheroid also rotates, and drives through hole rotary closing valve channel.The right passage 12 of valve body has internal thread and outside thread, valve seat has outside thread and is installed in the right passage of valve body right passage screw-internal thread fit with valve body, valve seat cooperates with spheroid contact seal, valve gap is connected with the left and right sides passage of valve body with the left and right sides passage screw fit of valve body and with joint, the internal thread of the right passage of valve body is opposite with externally threaded hand of spiral, therefore, and when rotating valve gap, valve seat can be along with rotation, thereby has guaranteed the fitted position of valve seat and spheroid.
Claims (1)
1. left-hand thread valve seat ball valve, comprise valve body (1), spheroid (2), valve gap (3), valve seat (4), valve rod (5) and joint (7), valve body have cavity (13) and about two passages (11,12), spheroid (2) places cavity (13), the right passage (12) of valve body has internal thread and outside thread, valve seat (4) has outside thread and is installed in the right passage of valve body right passage screw-internal thread fit with valve body, valve seat (4) cooperates with spheroid (2) contact seal, valve gap (3) is connected with the left and right sides passage of valve body with the left and right sides passage screw fit of valve body and with joint, and it is characterized in that: the internal thread of the right passage (12) of described valve body is opposite with externally threaded hand of spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200431962U CN201170343Y (en) | 2008-01-23 | 2008-01-23 | Ball-valve for reverse screwed valve base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200431962U CN201170343Y (en) | 2008-01-23 | 2008-01-23 | Ball-valve for reverse screwed valve base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201170343Y true CN201170343Y (en) | 2008-12-24 |
Family
ID=40209396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200431962U Expired - Fee Related CN201170343Y (en) | 2008-01-23 | 2008-01-23 | Ball-valve for reverse screwed valve base |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201170343Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047439A (en) * | 2012-08-17 | 2013-04-17 | 太仓长鸿工程塑胶有限公司 | Special polyethylene baiting ball valve for intermediate bulk container (IBC) |
-
2008
- 2008-01-23 CN CNU2008200431962U patent/CN201170343Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047439A (en) * | 2012-08-17 | 2013-04-17 | 太仓长鸿工程塑胶有限公司 | Special polyethylene baiting ball valve for intermediate bulk container (IBC) |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081224 Termination date: 20120123 |