CN213711924U - Simple stop valve with rotation-proof valve clack - Google Patents
Simple stop valve with rotation-proof valve clack Download PDFInfo
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- CN213711924U CN213711924U CN202022202398.0U CN202022202398U CN213711924U CN 213711924 U CN213711924 U CN 213711924U CN 202022202398 U CN202022202398 U CN 202022202398U CN 213711924 U CN213711924 U CN 213711924U
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- shaped groove
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Abstract
The utility model discloses a simple valve clack anti-rotation stop valve, which comprises a valve rod, a connected valve body and a support, wherein a valve seat, a valve clack matched with the valve seat, a liquid inlet and a liquid outlet are arranged in the valve body; the upper end of the valve clack is provided with a longitudinal T-shaped groove; the lower part of the valve rod is provided with a T-shaped head matched with the T-shaped groove, two sides of a shaft neck section of the T-shaped head are both provided with flat square planes, and the distance between the two flat square planes is slightly smaller than that of a notch at the upper end of the T-shaped groove. The utility model discloses can avoid the valve clack to rotate the sealed face wearing and tearing that cause, prolong the life of the sealed face of valve, guarantee the long-time normal use of valve.
Description
Technical Field
The utility model relates to a stop valve, especially a stop valve is prevented changeing by valve clack.
Background
The stop valve is a widely applied shut-off valve on a pressure pipeline, at present, only the valve rod is provided with an anti-rotation device, the valve clack of the stop valve is not provided with an anti-rotation structure, and the valve clack can not prevent rotation, so that the valve clack can freely rotate in the circumferential direction after being separated from a sealing surface of a valve seat in the running and using process of the valve; when the valve is closed, the valve clack rotates to easily cause the abrasion of a sealing surface, the service life of the sealing surface of the valve is greatly shortened, and the sealing surface of the valve is easy to be closed loosely and leak.
Disclosure of Invention
The utility model aims at the above-mentioned not enough that prior art exists, provide a stop valve is prevented changeing by plain type valve clack, it can avoid the valve clack to rotate the sealed face wearing and tearing that cause, prolongs the life of the sealed face of valve, guarantees the long-time normal use of valve.
In order to achieve the purpose, the simple valve clack anti-rotation stop valve comprises a valve rod, a connected valve body and a support, wherein a valve seat, a valve clack matched with the valve seat, a liquid inlet and a liquid outlet are arranged in the valve body; the upper end of the valve clack is provided with a longitudinal T-shaped groove; the valve is characterized in that a T-shaped head matched with the T-shaped groove is arranged at the lower part of the valve rod, flat square planes are arranged on two sides of a shaft neck section of the T-shaped head, and the distance between the two flat square planes is slightly smaller than that between notches at the upper end of the T-shaped groove.
The anti-rotation device between the middle part of the valve rod and the bracket can be an anti-rotation pin connected to the middle part of the valve rod and a clamping groove arranged on the bracket, and one end of the anti-rotation pin is arranged in the clamping groove;
the anti-rotation device between the middle part of the valve rod and the bracket can also be an anti-rotation key arranged at the middle part of the valve rod and a key groove arranged on the bracket, and the outer side of the anti-rotation key is arranged in the key groove;
the valve flap can be limited to rotate by the two flat square planes of the T-shaped head, so that the abrasion of a sealing surface caused by the rotation of the valve flap is avoided, the service life of the sealing surface of the valve is prolonged, and the long-time normal use of the valve is ensured;
as a further improvement of the utility model, the sealing surfaces of the valve clack and the valve seat are conical surfaces, and hard alloy layers are built up on the two conical surfaces; the wear resistance can be improved, and the service life of the sealing surface of the valve can be prolonged;
to sum up, the utility model discloses can avoid the valve clack to rotate the sealed face wearing and tearing that cause, prolong the life of the sealed face of valve, guarantee the long-time normal use of valve.
Drawings
Fig. 1 is a front view of an embodiment of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Fig. 3 is a front view of another embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the simple valve clack anti-rotation stop valve of the embodiment includes a valve rod 1, a valve body 2 and a support 3 which are connected with each other, a valve seat 4, a valve clack 5 matched with the valve seat 4, a liquid inlet 6 and a liquid outlet 7 are arranged in the valve body 2, the upper end of the valve rod 1 is connected with a hand wheel 10 through a valve rod nut 8 and a key 9, an anti-rotation device is arranged in the middle of the valve rod and the support 3, the anti-rotation device includes an anti-rotation pin 11 connected to the middle of the valve rod and a clamping groove 12 arranged on the support 3, and one end of the; the upper end of the valve clack 5 is provided with a longitudinal T-shaped groove 13, the lower part of the valve rod 1 is provided with a T-shaped head 14 matched with the T-shaped groove 13, two sides of a shaft neck section of the T-shaped head 14 are provided with flat square planes 15, and the distance between the two flat square planes 15 is slightly smaller than that of a notch at the upper end of the T-shaped groove 13; the sealing surfaces of the valve clack 5 and the valve seat 4 are conical surfaces, and hard alloy layers 16 or 17 are welded on the two conical surfaces.
The utility model can limit the valve flap 5 to rotate through the two flat square planes 15 of the T-shaped head 14, avoid the abrasion of the sealing surface caused by the rotation of the valve flap 5, and prolong the service life of the sealing surface of the valve and ensure the long-time normal use of the valve by adding the hard alloy layers 16 or 17 which are both built-up welded on the two conical surfaces;
the utility model discloses be not limited to above-mentioned embodiment, as shown in fig. 3, above-mentioned valve rod middle part also can be for locating the anti-rotation key 18 in the middle part of valve rod 1, locate keyway 19 on the support 3, prevent that the outside of anti-rotation key 18 from arranging keyway 19 in, can prevent equally that valve rod 1 from rotating.
Claims (4)
1. A simple valve clack anti-rotation stop valve comprises a valve rod, a valve body and a support, wherein the valve body and the support are connected with each other; the upper end of the valve clack is provided with a longitudinal T-shaped groove; the valve is characterized in that a T-shaped head matched with the T-shaped groove is arranged at the lower part of the valve rod, flat square planes are arranged on two sides of a shaft neck section of the T-shaped head, and the distance between the two flat square planes is slightly smaller than that between notches at the upper end of the T-shaped groove.
2. The valve flap anti-rotation stop valve of claim 1, wherein the anti-rotation device of the middle part of the valve stem and the bracket comprises an anti-rotation pin connected to the middle part of the valve stem and a slot arranged on the bracket, and one end of the anti-rotation pin is arranged in the slot.
3. The simple stop valve with anti-rotation valve clack of claim 1, wherein the anti-rotation device between the middle part of the valve stem and the support comprises an anti-rotation key arranged in the middle part of the valve stem and a key groove arranged on the support, and the outer side of the anti-rotation key is arranged in the key groove.
4. A simple anti-rotation stop valve for a valve flap as defined in any one of claims 1 to 3 wherein the sealing surfaces of the valve flap and the valve seat are both conical surfaces, and both conical surfaces are formed by overlaying a hard alloy layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022202398.0U CN213711924U (en) | 2020-09-30 | 2020-09-30 | Simple stop valve with rotation-proof valve clack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022202398.0U CN213711924U (en) | 2020-09-30 | 2020-09-30 | Simple stop valve with rotation-proof valve clack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213711924U true CN213711924U (en) | 2021-07-16 |
Family
ID=76796749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022202398.0U Active CN213711924U (en) | 2020-09-30 | 2020-09-30 | Simple stop valve with rotation-proof valve clack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213711924U (en) |
-
2020
- 2020-09-30 CN CN202022202398.0U patent/CN213711924U/en active Active
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