CN212177927U - Prevent blowing off ball valve rod structure - Google Patents
Prevent blowing off ball valve rod structure Download PDFInfo
- Publication number
- CN212177927U CN212177927U CN202020659674.3U CN202020659674U CN212177927U CN 212177927 U CN212177927 U CN 212177927U CN 202020659674 U CN202020659674 U CN 202020659674U CN 212177927 U CN212177927 U CN 212177927U
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- China
- Prior art keywords
- valve rod
- valve body
- shaft hole
- valve
- ball valve
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Abstract
The utility model provides a prevent blowing off ball valve rod structure, includes valve rod, valve body, and valve body shaft hole position is equipped with the recess, becomes alpha with the shaft hole central line, and alpha is less than 90, and valve rod shaft shoulder position is equipped with the convex part that matches with valve body shaft hole recess. The beneficial effects of the utility model are that, on the basis that does not increase extra spare part, the mode that adopts the valve rod to pack into the valve body from upper portion realizes preventing of valve rod and blows off the function.
Description
Technical Field
The utility model relates to a ball valve, especially a prevent blowing off ball valve rod structure.
Background
In the prior art, a ball valve generally adopts a mode of 'top loading' to install a valve rod, namely, the valve rod is firstly loaded from the upper end of a valve body, and then the valve rod is fixed and sealed by arranging an upper cover plate covering the valve body. However, the diameter of the valve rod is required to be smaller than that of the valve rod mounting hole in the top-mounting mode, so that after the valve rod is mounted, the valve rod cannot abut against the inner wall of the valve body, and the valve rod can only be fixed to the upper cover plate by means of the additionally-added valve plug and the threaded component. Under the high-pressure environment, the acting force of the high-pressure medium on the valve rod is very large, and once the acting force is greater than the fixing force of the upper cover plate on the valve rod, the valve rod breaks through the limitation of the upper cover plate and is blown out, so that the ball valve is disabled.
SUMMERY OF THE UTILITY MODEL
In order to overcome the prior art problem, the utility model provides a prevent blowing off ball valve rod structure.
The technical scheme of the utility model, a prevent blowing off ball valve rod structure, including valve rod, valve body shaft hole position is equipped with the recess, becomes alpha with the shaft hole central line, and alpha is less than 90, and valve rod shaft shoulder position is equipped with the convex part that matches with valve body shaft hole recess.
The beneficial effects of the utility model are that, on the basis that does not increase extra spare part, the mode that adopts the valve rod to pack into the valve body from upper portion realizes preventing of valve rod and blows off the function.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic view of the valve stem structure.
In the figure: 1. a valve stem; 2. a valve body.
Detailed Description
As shown in the figure, the anti-blowout ball valve rod structure comprises a valve rod 1 and a valve body 2, wherein a groove is formed in the shaft hole position of the valve body 2, alpha degrees and less than 90 degrees are formed on the central line of the shaft hole, and a convex part matched with the groove in the shaft hole of the valve body 2 is arranged at the shaft shoulder position of the valve rod 1. After the convex part of the valve rod 1 is inserted into the groove of the shaft hole of the valve body, the valve rod 1 is in a working position after clockwise rotating by alpha degrees, and at the moment, the convex part of the valve rod 1 is in a blocking position of the step of the shaft hole in the 90-degree opening and closing action process of the valve, so that mechanical limitation is realized, and the function of preventing blowout is achieved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (1)
1. The utility model provides a prevent blowing off ball valve rod structure, includes valve rod, valve body, its characterized in that, valve body shaft hole position is equipped with the recess, becomes alpha with the shaft hole central line, alpha is less than 90, valve rod shaft shoulder position is equipped with the convex part that matches with valve body shaft hole recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020659674.3U CN212177927U (en) | 2020-04-27 | 2020-04-27 | Prevent blowing off ball valve rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020659674.3U CN212177927U (en) | 2020-04-27 | 2020-04-27 | Prevent blowing off ball valve rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212177927U true CN212177927U (en) | 2020-12-18 |
Family
ID=73764480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020659674.3U Active CN212177927U (en) | 2020-04-27 | 2020-04-27 | Prevent blowing off ball valve rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177927U (en) |
-
2020
- 2020-04-27 CN CN202020659674.3U patent/CN212177927U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |