CN210344458U - Spherical surface soft sealing high-pressure check valve - Google Patents
Spherical surface soft sealing high-pressure check valve Download PDFInfo
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- CN210344458U CN210344458U CN201920970734.0U CN201920970734U CN210344458U CN 210344458 U CN210344458 U CN 210344458U CN 201920970734 U CN201920970734 U CN 201920970734U CN 210344458 U CN210344458 U CN 210344458U
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Abstract
The utility model discloses a spherical soft sealing high-pressure check valve, which relates to the technical field of valve equipment and comprises a valve body, a valve cavity with a thick upper part and a thin lower part is arranged in the valve body, one side of the valve body is provided with an input end, the other side is provided with an output end, the thick part of the upper part of the valve cavity is provided with an annular embedding groove, the side wall of the annular embedding groove which is positioned at the inner side in two vertical side walls is a vertical wall, the side wall which is positioned at the outer side is an inclined wall deviating from the axis of the annular embedding groove, the inner diameter corresponding to the edge of the top end of the inclined wall is smaller than the inner diameter corresponding to the edge of the bottom end of the inclined wall, the valve cavity is internally provided with an annular valve seat, the bottom end of the annular valve seat is embedded in the annular embedding groove, a valve clack with a hemispheroid at the bottom is arranged above the annular valve seat, the diameter of the hemisphere is larger than the inner diameter of the annular valve seat, the top end of the valve clack is provided with a spring, and the top end of the spring is provided with a valve cover for closing the valve cavity; the utility model discloses can effectively avoid the drawback that the disk seat was rushed out, improve the suitability of equipment.
Description
Technical Field
The utility model relates to a valve equipment technical field, concretely relates to can prevent that disk seat from rushing out, be applicable to high-pressure environment's check valve.
Background
In the prior art, a soft sealing check valve is generally the same as a metal sealing check valve in that a valve seat is turned, then the valve seat is pressed into a valve body, and then the lower end of the valve seat is expanded by a round ball. The check valve with the structure is only suitable for occasions with lower pipeline pressure, and when the pipeline pressure is high, the valve seat of the soft seal can possibly be flushed out of the valve body, so that the valve is damaged, and the application range of the check valve is limited. Therefore, there is a need for an improved structure of the existing spherical soft sealing check valve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a spherical soft sealing high pressure check valve to soft sealed disk seat can not be suitable for high pressure environment's technical problem among the solution prior art.
The utility model discloses a realize through following technical scheme:
the utility model provides a spherical soft sealing high-pressure check valve, which comprises a valve body, wherein a valve cavity with a thick top and a thin bottom is arranged in an inner cavity of the valve body, one side of the valve body is provided with an input end which penetrates through the valve body and is communicated with the lower part of the valve cavity, the other side of the valve body is provided with an output end which penetrates through the valve body and is communicated with the upper part of the valve cavity, the bottom end of the thick part of the upper part of the valve cavity is provided with an annular embedding groove which surrounds the top end of the thin part of the lower part of the valve cavity, the side wall at the inner side of the two vertical side walls of the annular embedding groove is a vertical wall, the side wall at the outer side is an inclined wall deviating from the axis of the annular embedding groove, the inner diameter corresponding to the top end edge of the inclined wall is smaller than the inner diameter corresponding to the bottom end edge of the inclined wall, the diameter of the hemisphere is larger than the inner diameter of the annular valve seat, the top end of the valve clack is provided with a spring, and the top end of the spring is provided with a valve cover for sealing the valve cavity.
Further, the inclined wall has an included angle of 5 ° with the vertical direction.
Further, the annular valve seat is made of PTFE or RPTFE material.
Further, the outer diameter of the bottom end of the annular valve seat is larger than the outer diameter of the annular embedding groove, and the inner diameter of the bottom end of the annular valve seat is smaller than the inner diameter of the annular embedding groove.
Further, a sealing gasket is arranged between the valve cover and the valve body.
Furthermore, the outer sides of the input end and the output end of the valve body are respectively connected with a connecting pipe.
Further, the annular valve seat is an integrated structure formed by an upper annular part and a lower annular part, the inner diameter of the upper annular part is smaller than that of the lower annular part, the outer diameter of the upper annular part is equal to that of the lower annular part, the inner diameter of the lower annular part is smaller than that of the annular embedding groove, and the outer diameter of the lower annular part is larger than that of the annular embedding groove.
Furthermore, the inner diameter of the upper annular part is larger than that of the top of the thinner part of the lower part of the valve cavity, and the inner diameter of the hemisphere is directly larger than that of the upper annular part.
Further, the valve cover is connected with the valve body through a bolt.
Compared with the prior art, the utility model has the following advantages: the utility model provides a spherical soft sealing high pressure check valve through set up the annular embedding groove of taking the inclined plane in its valve pocket, then utilizes the annular valve seat to inlay system in it back, leads to the interference contact and the inclined plane setting of the two for the annular valve seat can be inlayed in the annular valve seat effectively, has avoided the drawback that the high pressure is rushed out, has improved the suitability of equipment.
Drawings
Fig. 1 is a schematic structural diagram of a spherical soft seal high-pressure check valve.
In the figure: 1. a valve body; 2. a valve cavity; 3. an input end; 4. an output end; 5. an annular valve seat; 6. a valve flap; 7. a spring; 8. a valve cover; 9. sealing gaskets; 10. and (4) bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the embodiment of the present invention:
the embodiment provides a spherical soft-sealing high-pressure check valve, which comprises a valve body 1, wherein a valve cavity 2 with a thick upper part and a thin lower part is arranged in an inner cavity of the valve body 1, an input end 3 penetrating through the valve body and communicated with the lower part of the valve cavity 2 is arranged on one side of the valve body 1, an output end 4 penetrating through the valve body and communicated with the upper part of the valve cavity 2 is arranged on the other side of the valve body, an annular embedding groove surrounding the top end of the thin lower part of the valve cavity 2 is arranged at the bottom end of the thick upper part of the valve cavity 2, the side wall of the annular embedding groove in the two vertical directions is a vertical wall, the side wall on the inner side is an inclined wall deviating from the axis of the annular embedding groove, the inner diameter corresponding to the top end edge of the inclined wall is smaller than the inner diameter corresponding to the bottom end edge of the inclined wall, an annular valve seat 5 is arranged in the, the diameter of the hemisphere is larger than the inner diameter of the annular valve seat 5, the top end of the valve clack 6 is provided with a spring 7, and the top end of the spring 7 is provided with a valve cover 8 for closing the valve cavity 2.
In this embodiment, the medium enters the valve cavity through the input end 3, and flows out of the valve body 1 through the output end 4 after the valve clack 6 corresponding to the hemisphere is pushed open, so that effective circulation of the medium is realized.
When the medium flows back, the medium enters the valve cavity 2 through the output end 4, but the hemisphere is tightly contacted with the annular valve seat 5 under the action of the spring 7, and only can be gathered in the valve cavity 2, and downward force is applied to the valve clack 6 to further seal the hemisphere and the annular valve seat 5, so that the purpose of effective check is realized;
in this process, the annular groove can effectively receive the bottom end of the annular valve seat 5, and the excessive contact can effectively prevent the annular valve seat from being punched out by high pressure.
Preferably, in the present embodiment, in order to effectively form the engagement with the annular valve seat 5, the inclined wall is inclined at an angle of 5 ° to the vertical direction.
Through the arrangement, the annular embedding groove is of a structure with a thin upper part and a thick lower part, and the annular valve seat 5 can be clamped better;
preferably, in the present embodiment, the annular valve seat 5 is made of PTFE or RPTFE.
Preferably, in the present embodiment, in order to effectively clamp the annular valve seat 5, the outer diameter of the bottom end of the annular valve seat 5 is larger than the outer diameter of the annular embedding groove, and the inner diameter of the bottom end of the annular valve seat 5 is smaller than the inner diameter of the annular embedding groove.
Preferably, a sealing gasket 9 is further disposed between the valve cover 8 and the valve body 1 in order to effectively seal the valve cover 8 and the valve body 1.
Preferably, the outer sides of the input end 3 and the output end 4 of the valve body 1 are respectively connected with a connecting pipe.
Preferably, the annular valve seat 5 is embodied as an integral structure composed of an upper annular portion having an inner diameter smaller than that of the lower annular portion, an outer diameter equal to that of the lower annular portion, and a lower annular portion having an inner diameter smaller than that of the annular embedding groove and an outer diameter larger than that of the annular embedding groove.
In this embodiment, the annular valve seat 5 is first placed in liquid nitrogen at-196 ℃, and the principle of expansion with heat and contraction with cold is used, so that the whole annular valve seat can be reduced by 3-4 mm, and then placed in the annular embedding groove, at this time, the outer diameter of the annular valve seat 5 is smaller than the outer diameter of the annular embedding groove, and the inner diameter of the annular valve seat is larger than the inner diameter of the annular embedding groove, so that the annular valve seat can be effectively placed in the annular embedding groove, and then the annular valve seat 5 is restored to the normal temperature state and in interference contact with the annular embedding groove, so that the installation of the annular valve seat can be effectively completed, the friction force between the annular valve seat 5 and the annular embedding groove can be effectively increased, the defect of high-pressure punching is avoided, and.
Preferably, the inner diameter of the upper annular part is larger than the inner diameter of the top of the lower thinner part of the valve chamber 2, and the inner diameter of the hemisphere is directly larger than the inner diameter of the upper annular part.
By means of the above-mentioned arrangement, the medium pressure does not act directly on the annular valve seat 5, further reducing the possibility of its blow-out.
Preferably, the bonnet 8 is connected to the valve body 1 by means of bolts 10.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A spherical soft-sealing high-pressure check valve comprises a valve body (1), wherein a valve cavity (2) with a thick upper part and a thin lower part is arranged in an inner cavity of the valve body (1), an input end (3) penetrating through a valve body and communicated with the lower part of the valve cavity (2) is arranged at one side of the valve body (1), an output end (4) penetrating through the valve body and communicated with the upper part of the valve cavity (2) is arranged at the other side of the valve body, the spherical soft-sealing high-pressure check valve is characterized in that an annular embedding groove surrounding the top end of the thin lower part of the valve cavity (2) is arranged at the bottom end of the thick upper part of the valve cavity (2), the side wall at the inner side of the two vertical side walls of the annular embedding groove is a vertical wall, the side wall at the outer side is an inclined wall deviating from the axis of the annular soft-sealing high-pressure check valve is arranged at the inner side of the annular embedding groove, the inner diameter corresponding to, the valve is characterized in that a valve clack (6) with a hemispheroid mounted at the bottom is arranged right above the annular valve seat (5), the diameter of the hemispheroid is larger than the inner diameter of the annular valve seat (5), a spring (7) is arranged at the top end of the valve clack (6), and a valve cover (8) for sealing the valve cavity (2) is arranged at the top end of the spring (7).
2. The spherical soft-sealing high-pressure check valve according to claim 1, wherein the inclined wall is inclined at an angle of 5 ° to the vertical.
3. Spherical soft sealing high-pressure check valve according to claim 2, characterized in that said annular seat (5) is in particular of PTFE or RPTFE.
4. The spherical soft sealing high-pressure check valve according to claim 3, characterized in that the outer diameter of the bottom end of the annular valve seat (5) is larger than the outer diameter of the annular embedding groove, and the inner diameter of the bottom end of the annular valve seat (5) is smaller than the inner diameter of the annular embedding groove.
5. A spherical soft-sealing high-pressure check valve according to claim 4, characterized in that a sealing gasket (9) is arranged between the valve cover (8) and the valve body (1).
6. The spherical soft-sealing high-pressure check valve according to claim 5, characterized in that the outer sides of the input end (3) and the output end (4) of the valve body (1) are respectively connected with a connecting pipe.
7. The spherical soft-sealing high-pressure check valve according to claim 6, wherein the annular valve seat (5) is embodied as an integral structure composed of an upper annular portion and a lower annular portion, the upper annular portion having an inner diameter smaller than that of the lower annular portion, the upper annular portion having an outer diameter equal to that of the lower annular portion, the lower annular portion having an inner diameter smaller than that of the annular embedding groove and an outer diameter larger than that of the annular embedding groove.
8. The spherical soft-sealing high-pressure check valve as claimed in claim 7, wherein the inner diameter of the upper annular part is larger than that of the top of the lower thinner part of the valve chamber (2), and the inner diameter of the hemisphere is directly larger than that of the upper annular part.
9. A spherical soft-sealing high-pressure check valve according to claim 8, characterized in that the valve cover (8) is connected with the valve body (1) by bolts (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970734.0U CN210344458U (en) | 2019-06-26 | 2019-06-26 | Spherical surface soft sealing high-pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970734.0U CN210344458U (en) | 2019-06-26 | 2019-06-26 | Spherical surface soft sealing high-pressure check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210344458U true CN210344458U (en) | 2020-04-17 |
Family
ID=70190735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920970734.0U Active CN210344458U (en) | 2019-06-26 | 2019-06-26 | Spherical surface soft sealing high-pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210344458U (en) |
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2019
- 2019-06-26 CN CN201920970734.0U patent/CN210344458U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 245000, Meilin Avenue, Huangshan City Economic Development Zone, Anhui, 55 Patentee after: Anhui Tunxi High Pressure Valve Co.,Ltd. Address before: 245000, Meilin Avenue, Huangshan City Economic Development Zone, Anhui, 55 Patentee before: ANHUI TUNXI HIGH PRESSURE VALVE Co.,Ltd. |