CN212804409U - Umbrella-shaped check valve - Google Patents
Umbrella-shaped check valve Download PDFInfo
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- CN212804409U CN212804409U CN202020736044.1U CN202020736044U CN212804409U CN 212804409 U CN212804409 U CN 212804409U CN 202020736044 U CN202020736044 U CN 202020736044U CN 212804409 U CN212804409 U CN 212804409U
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Abstract
The utility model provides an umbrella type check valve, include: the valve body is internally provided with a cavity, and the cavity is provided with an inlet and an outlet; the positioning ring is arranged at the outlet, and the inner wall of the outlet on the outer wall of the positioning ring is tightly matched; one end of the guide rod sleeve is fixed on the positioning ring, the other end of the guide rod sleeve is provided with a groove, the spring is arranged in the axial containing space of the groove, and the spring can stretch out and draw back along the axial direction; the valve rod is arranged in the cavity, and one end of the valve rod is inserted into the groove of the guide rod sleeve and is contacted with the other end of the spring; the umbrella-shaped valve clack is arranged in the cavity, the umbrella-shaped valve clack is of an umbrella-shaped structure formed by arc surfaces, the cross section of the umbrella-shaped structure is in a bow shape, the umbrella-shaped structure is arranged at the inlet, the outer edge of the umbrella-shaped structure props against the inlet, and the arc surfaces of the umbrella-shaped structure extend to the outside of the inlet to block the inlet; the umbrella-shaped structure is axially connected with the other end of the valve rod. The utility model discloses umbrella-type valve clack's arc surface has guide structure can improve the centering nature of valve clack effectively, reduces the influence of external force to the askew slope volume of valve clack, improves valve seal reliability.
Description
Technical Field
The utility model relates to an industrial valve specifically relates to an umbrella type check valve.
Background
The check valve is widely applied in the technical field of modern manufacturing engineering, and the check valve is a valve which automatically opens and closes a valve clack by the flowing of a medium and is used for preventing the medium in a pipeline from flowing backwards. As the check valve technology is more and more applied to various industries, the performance of the original traditional check valve is continuously improved, and the development of new check valves which meet the market requirements is not easy. The check valves commonly used at present often exist: the problems of large pressure loss, large recoil force, poor sealing, slow closing and the like are solved, and the market demand is far from being met.
SUMMERY OF THE UTILITY MODEL
To the defects in the prior art, the utility model aims at providing an umbrella type check valve.
In order to achieve the above object, the utility model provides an umbrella type check valve, include:
the valve comprises a valve body, wherein a cavity is formed in the valve body, an inlet and an outlet are formed in the cavity, and the inlet and the outlet are respectively positioned at two ends of the cavity;
the positioning ring is arranged at the outlet of the chamber, and the outer wall of the positioning ring is tightly matched with the inner wall of the outlet;
one end of the guide rod sleeve is fixed on the positioning ring, and the guide rod sleeve is perpendicular to the positioning ring; the other end of the guide rod sleeve is provided with a groove, and the groove is provided with an axial accommodating space;
the spring is arranged in the axial accommodating space of the groove, one end of the spring is fixed at the bottom of the axial space, and the spring can stretch and retract along the axial direction;
the valve rod is arranged in the cavity, and one end of the valve rod is inserted into the groove of the guide rod sleeve and is in contact with the other end of the spring;
the umbrella-shaped valve clack is arranged in the cavity and is of an umbrella-shaped structure formed by arc surfaces, the cross section of the umbrella-shaped structure is in a bow shape, the umbrella-shaped structure is arranged at the inlet, the outer edge of the umbrella-shaped structure props against the inlet, and the arc surfaces of the umbrella-shaped structure extend to the outside of the inlet so as to block the inlet; the umbrella-shaped structure is axially connected with the other end of the valve rod; when the pressure in the chamber is smaller than the spring force, the spring returns to the original position to push the umbrella-shaped valve clack to prop against the inlet, and the inlet is closed.
Preferably, a first O-shaped sealing ring in sealing fit with the inner wall of the inlet is arranged on the arc surface of the umbrella-shaped structure.
Preferably, the umbrella-shaped valve flap is connected to the other end of the valve stem by a lock nut.
Preferably, a through hole is formed in the center of the umbrella-shaped valve clack, and the locking nut penetrates through the through hole of the umbrella-shaped valve clack and is connected with the valve rod.
Preferably, a second O-shaped sealing ring is arranged at one end, close to the valve rod, of the through hole, so that the locking nut is in close fit with the inner wall of the through hole.
Preferably, the umbrella-type check valve further comprises a circlip for hole, which is disposed at the outlet of the chamber and outside the retainer ring, for limiting the axial movement of the retainer ring.
Preferably, the umbrella-type check valve further comprises a shaft circlip, wherein the shaft circlip is arranged at one end, close to the outlet, of the guide rod sleeve, is positioned outside the positioning ring, and is used for limiting the axial movement of the guide rod sleeve.
Compared with the prior art, the utility model discloses at least one kind's beneficial effect as follows has:
1. the above structure of the utility model, valve clack structure adopt umbrella-type valve clack structure, and the arc surface of umbrella-type valve clack has guide structure and can improve the centering nature of valve clack effectively, reduces the influence of external force to the askew slope volume of valve clack, improves valve seal reliability, can make pressure loss very little and anti recoil again simultaneously, and the resistance is little when closing, closes advantage such as rapid, long service life.
2. The above structure of the utility model, having adopted the guide bar cover, having played the guide effect of automatic coaxial performance, can realize the axiality of valve clack and valve rod very accurately, be favorable to the leakproofness of control valve.
3. The above structure of the utility model, the spring has the non return function, guarantees to open and close action and non return advantage such as rapidly.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is an assembly view of an umbrella check valve in accordance with a preferred embodiment of the present invention;
the scores in the figure are indicated as: the valve comprises a valve body 1, a positioning ring 2, a guide rod sleeve 3, an umbrella-shaped valve clack 4, a valve rod 5, a locknut 6, a spring 7, a first O-shaped sealing ring 8, a hole elastic check ring 9, a shaft elastic check ring 10 and a second O-shaped sealing ring 11.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
Referring to fig. 1, an assembly diagram of the umbrella check valve according to a preferred embodiment of the present invention is shown, which includes a valve body 1, a positioning ring 2, a guide rod sleeve 3, a spring 7, a valve rod 5 and an umbrella-shaped valve flap 4, wherein the positioning ring 2, the guide rod sleeve 3, the spring 7, the valve rod 5 and the umbrella-shaped valve flap 4 are installed inside the valve body 1, and the guide rod sleeve 3, the valve rod 5 and the umbrella-shaped valve flap 4 are axially connected.
The valve body 1 is internally provided with a tetragonal cavity, the two ends of the cavity are respectively provided with an inlet and an outlet, the inlet and the outlet are respectively communicated with the outside of the valve body 1, and fluid in a pipeline can flow into the cavity of the valve body 1 from the inlet and then flow out of the cavity of the valve body from the outlet.
The outlet of the chamber is sleeved with the positioning ring 2, and the outer wall of the positioning ring 2 is tightly matched with the inner wall of the outlet. The center of the positioning ring 2 is provided with a central hole. One end of the guide rod sleeve 3 penetrates into the center hole of the positioning ring 2 and is fixed with the positioning ring 2, and the guide rod sleeve 3 is perpendicular to the positioning ring 2. The other end of the guide rod sleeve 3 is provided with a groove, and the groove is provided with an axial accommodating space for accommodating the spring 7. The guide rod sleeve 3 is adopted, the guide function of automatic coaxiality performance is achieved, the coaxiality of the valve clack and the valve rod 5 can be accurately achieved, and the sealing performance of the control valve is facilitated.
The spring 7 is arranged in the axial containing space of the groove of the guide rod sleeve 3, one end of the spring 7 is fixed on the bottom surface of the axial containing space, and the spring 7 can axially stretch and retract in the axial containing space.
The valve rod 5 is arranged in the cavity, and the valve rod 5 is inserted into the groove of the guide rod sleeve 3 and is contacted with the other end of the spring 7; the outer wall of the valve rod 5 is tightly matched with the groove. The end part of the valve rod 5 is provided with a sleeve, the spring 7 penetrates into the sleeve, the end part of the spring 7 is propped against the bottom surface of the sleeve, and the outer diameter of the spring 7 is tightly matched with the inner diameter of the sleeve. When the valve rod 5 moves linearly, the compression spring 7 can be elastically deformed.
The umbrella-shaped valve clack 4 is arranged in the cavity, the umbrella-shaped valve clack 4 is of an umbrella-shaped structure formed by arc surfaces, the cross section of the umbrella-shaped structure is in a bow shape, the umbrella-shaped valve clack 4 is connected with the other end of the valve rod 5, the umbrella-shaped valve clack 4 is arranged at the position of an inlet of the cavity, the outer edge of the umbrella-shaped structure is abutted against the inlet, the arc surfaces of the umbrella-shaped structure extend to the outside of the inlet, and therefore the inlet is blocked. And a first O-shaped sealing ring 8 which is in sealing fit with the inner wall of the inlet is arranged on the arc surface of the umbrella-shaped structure. When the fluid pressure of the inlet is larger than the force of the spring 7, the umbrella-shaped valve flap 4 is jacked open, the inlet is opened, and when the pressure in the chamber is smaller than the force of the spring 7, the spring 7 restores to the original position to push the umbrella-shaped valve flap 4 to prop against the inlet, and the inlet is closed.
In other partially preferred embodiments, umbrella valve flap 4 is connected to the other end of valve stem 5 by a jam nut 6. Can play a role in guiding and centering.
In other partially preferred embodiments, the center of the umbrella-shaped valve flap 4 is provided with a through hole, and the lock nut 6 passes through the through hole of the umbrella-shaped valve flap 4 to be connected with the valve rod 5.
In other preferred embodiments, a second O-ring 11 is disposed at the end of the through hole of the umbrella-shaped valve flap 4 close to the valve rod 5, so that the lock nut 6 is tightly fitted to the inner wall of the through hole.
In other partially preferred embodiments, the umbrella-type check valve further comprises a circlip for hole 9, the circlip for hole 9 is arranged at the outlet of the chamber and is positioned outside the positioning ring 2 and used for limiting the axial movement of the positioning ring 2; the limiting function is achieved.
In other preferred embodiments, the umbrella-type check valve further comprises a shaft circlip 10, and the shaft circlip 10 is arranged at one end of the guide rod sleeve 3 close to the outlet, is positioned outside the positioning ring 2, and is used for limiting the axial movement of the guide rod sleeve; the limiting function is achieved.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (7)
1. An umbrella check valve, comprising:
the valve comprises a valve body, wherein a cavity is formed in the valve body, an inlet and an outlet are formed in the cavity, and the inlet and the outlet are respectively positioned at two ends of the cavity;
the positioning ring is arranged at the outlet of the chamber, and the outer wall of the positioning ring is tightly matched with the inner wall of the outlet;
one end of the guide rod sleeve is fixed on the positioning ring, and the guide rod sleeve is perpendicular to the positioning ring; the other end of the guide rod sleeve is provided with a groove, and the groove is provided with an axial accommodating space;
the spring is arranged in the axial accommodating space of the groove, one end of the spring is fixed at the bottom of the axial accommodating space, and the spring can stretch and retract along the axial direction;
the valve rod is arranged in the cavity, and one end of the valve rod is inserted into the groove of the guide rod sleeve and is in contact with the other end of the spring;
the umbrella-shaped valve clack is arranged in the cavity and is of an umbrella-shaped structure formed by arc surfaces, the cross section of the umbrella-shaped structure is in a bow shape, the umbrella-shaped structure is arranged at the inlet, the outer edge of the umbrella-shaped structure props against the inlet, and the arc surfaces of the umbrella-shaped structure extend to the outside of the inlet so as to block the inlet; the umbrella-shaped structure is axially connected with the other end of the valve rod; when the pressure in the chamber is smaller than the spring force, the spring returns to the original position to push the umbrella-shaped valve clack to prop against the inlet, and the inlet is closed.
2. The umbrella check valve as claimed in claim 1, wherein a first O-ring is disposed on the circular arc surface of the umbrella structure and is in sealing engagement with the inner wall of the inlet.
3. An umbrella check valve as defined in claim 1 wherein the umbrella flap is connected to the other end of the valve stem by a lock nut.
4. An umbrella check valve in accordance with claim 3, wherein a through hole is formed in the center of the umbrella flap, and the lock nut is connected to the valve stem through the through hole of the umbrella flap.
5. An umbrella check valve as defined in claim 4, wherein a second O-ring is disposed at an end of said through hole adjacent to said valve stem to sealingly engage said locking nut with an inner wall of said through hole.
6. An umbrella check valve as defined in any one of claims 1-5, further comprising a circlip for an aperture, said circlip for an aperture being disposed at said outlet of said chamber and outside said cage for restricting axial movement of said cage.
7. An umbrella check valve as defined in any one of claims 1 to 5, further comprising a shaft circlip provided at an end of the guide rod sleeve adjacent the outlet and outside the retainer for limiting axial movement of the guide rod sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020736044.1U CN212804409U (en) | 2020-05-07 | 2020-05-07 | Umbrella-shaped check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020736044.1U CN212804409U (en) | 2020-05-07 | 2020-05-07 | Umbrella-shaped check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212804409U true CN212804409U (en) | 2021-03-26 |
Family
ID=75092874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020736044.1U Active CN212804409U (en) | 2020-05-07 | 2020-05-07 | Umbrella-shaped check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212804409U (en) |
-
2020
- 2020-05-07 CN CN202020736044.1U patent/CN212804409U/en active Active
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