CN212745089U - Double-sealing top guiding cage type regulating valve - Google Patents
Double-sealing top guiding cage type regulating valve Download PDFInfo
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- CN212745089U CN212745089U CN202021545603.7U CN202021545603U CN212745089U CN 212745089 U CN212745089 U CN 212745089U CN 202021545603 U CN202021545603 U CN 202021545603U CN 212745089 U CN212745089 U CN 212745089U
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Abstract
The utility model relates to a double containment top direction cage type regulating valve, the governing valve includes valve body, valve gap, valve rod, case, valve cage, the valve gap is fixed to be connected on the valve body, forms the valve pocket between valve body and valve gap, and the valve pocket is divided into two parts from top to bottom, the valve body both ends are provided with import, export respectively, import intercommunication valve pocket upper portion, export intercommunication valve pocket lower part, the case sets up in the valve pocket with the valve cage cooperation, the valve rod vertically passes the valve gap and is connected with the case, by the valve rod reciprocates, drives the case and reciprocates, opens or closes the valve; the valve cage is arranged on the valve body; the valve core is arranged in the valve cage, the upper end and the lower end of the valve core are respectively and fixedly connected with an upper pressure plate and a lower pressure plate, sealing rings are respectively clamped and fixed between the upper pressure plate, the lower pressure plate and the valve core, and the peripheral surfaces of the sealing rings extend out of the valve core and are in sealing contact with the valve cage to form double sealing. The double seal constructed by the sealing rings reduces the leakage of the valve.
Description
Technical Field
The utility model relates to a governing valve, concretely relates to double containment top direction cage governing valve.
Background
The existing double-seal regulating valve has the advantages of large rated flow coefficient, small unbalanced force and the like, but when the valve is closed again, because of factors such as machining errors and the like, a valve core cannot be in contact with two sealing surfaces of a valve cage at the same time, so that the leakage rate is large, and the product is invented.
Disclosure of Invention
In order to solve the problem, the utility model provides a double containment top direction cage governing valve.
The technical scheme of the utility model:
a double-seal top-guiding cage type regulating valve comprises a valve body, a valve cover, a valve rod, a valve core and a valve cage, wherein the valve cover is fixedly connected to the valve body, a valve cavity is formed between the valve body and the valve cover and is divided into an upper part and a lower part; the valve cage is arranged on the valve body; the valve core is arranged in the valve cage, the upper end and the lower end of the valve core are respectively and fixedly connected with an upper pressure plate and a lower pressure plate, sealing rings are respectively clamped and fixed between the upper pressure plate, the lower pressure plate and the valve core, and the peripheral surfaces of the sealing rings extend out of the valve core and are in sealing contact with the valve cage to form double sealing.
The valve cage is clamped and fixed between the valve cover and the valve body, a tooth-shaped gasket is arranged between the upper end of the valve cage and the contact surface of the valve cover and the valve body, and a winding gasket is arranged between the lower end of the valve cage and the contact surface of the valve body.
The lower end face of the valve core is provided with a groove, the lower pressing plate covers the groove to form an inner cavity, and a round hole is formed in the center of the lower pressing plate and is communicated with the inner cavity and the valve cavity.
The upper pressure plate, the lower pressure plate and the valve core are matched through steps and fixed through a plurality of bolts and nuts, and the bolts sequentially penetrate through the upper pressure plate, the valve core and the lower pressure plate.
The utility model has the advantages of, reasonable in design, simple structure adopts the double containment that the sealing ring found, has reduced the leakage of valve, reaches the sealed effect that has improved the valve, has solved the leakage that causes because of machining error scheduling problem.
Drawings
Figure 1 is a schematic diagram of a double seal top guide cage type regulating valve structure.
Fig. 2 is a partially enlarged schematic view of fig. 1.
In the figure, a valve body 1, a valve cover 2, a valve rod 3, a valve core 4, a valve cage 5, a valve cavity 6, an upper pressure plate 7, a lower pressure plate 8, a sealing ring 9 and an inner cavity 12 are shown.
Detailed Description
As shown in fig. 1-2, the double-sealing top-guiding cage type regulating valve comprises a valve body 1, a valve cover 2, a valve rod 3, a valve core 4 and a valve cage 5, wherein the valve cover 2 is fixedly connected to the valve body 1, a valve cavity 6 is formed between the valve body 1 and the valve cover 2, the valve cavity 6 is divided into an upper part and a lower part, an inlet and an outlet are respectively arranged at two ends of the valve body 2, the inlet is communicated with the upper part of the valve cavity 6, the outlet is communicated with the lower part of the valve cavity 6, the valve core 4 and the valve cage 5 are arranged in the valve cavity 6 in a matched mode, the valve rod 3 vertically penetrates through the valve cover 2 and is connected with the valve core 4, and the; the valve cage 5 is arranged on the valve body 1; the valve core 4 is arranged in the valve cage 5, the upper end and the lower end of the valve core 4 are respectively and fixedly connected with an upper pressure plate 7 and a lower pressure plate 8, sealing rings 9 are respectively clamped and fixed between the upper pressure plate 7 and the valve core 4 and between the lower pressure plate 8 and the valve core 4, and the peripheral surfaces of the sealing rings 9 extend out of the valve core 4 and are in sealing contact with the valve cage 5 to form double sealing; the valve cage 5 is clamped and fixed between the valve cover 2 and the valve body 1, a tooth-shaped gasket is arranged between the contact surfaces of the upper end of the valve cage and the valve cover 2 as well as the valve body 1, and a winding gasket is arranged between the contact surfaces of the lower end of the valve cage and the valve body 1; a groove is formed in the lower end face of the valve core 4, the lower pressing plate 8 covers the groove to form an inner cavity 12, and a circular hole is formed in the center of the lower pressing plate 8 and is communicated with the inner cavity 12 and the valve cavity 6; the upper pressure plate 7, the lower pressure plate 8 and the valve core 4 are matched through steps and fixed through a plurality of bolts and nuts, and the bolts sequentially penetrate through the upper pressure plate 7, the valve core 4 and the lower pressure plate 8.
The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.
Claims (4)
1. A double-seal top-guiding cage type regulating valve comprises a valve body, a valve cover, a valve rod, a valve core and a valve cage, wherein the valve cover is fixedly connected to the valve body, a valve cavity is formed between the valve body and the valve cover and is divided into an upper part and a lower part; the valve is characterized in that the valve cage is arranged on the valve body; the valve core is arranged in the valve cage, the upper end and the lower end of the valve core are respectively and fixedly connected with an upper pressure plate and a lower pressure plate, sealing rings are respectively clamped and fixed between the upper pressure plate, the lower pressure plate and the valve core, and the peripheral surfaces of the sealing rings extend out of the valve core and are in sealing contact with the valve cage to form double sealing.
2. The dual sealing top guiding cage type modulating valve of claim 1 wherein the cage is clamped between the valve cover and the valve body, with a castellated gasket disposed between the upper end and the contacting surface of the valve cover and the valve body, and a wound gasket disposed between the lower end and the contacting surface of the valve body.
3. The dual sealing top guiding cage type adjusting valve as claimed in claim 1, wherein the lower end surface of the valve core is provided with a groove, the lower pressing plate covers the groove to form an inner cavity, and the center of the lower pressing plate is provided with a circular hole for communicating the inner cavity and the valve cavity.
4. The dual sealing top guiding cage type modulating valve of claim 1 wherein the upper pressure plate, the lower pressure plate and the spool are engaged by steps and fixed by a plurality of bolts and nuts, the bolts sequentially passing through the upper pressure plate, the spool and the lower pressure plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545603.7U CN212745089U (en) | 2020-07-30 | 2020-07-30 | Double-sealing top guiding cage type regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021545603.7U CN212745089U (en) | 2020-07-30 | 2020-07-30 | Double-sealing top guiding cage type regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212745089U true CN212745089U (en) | 2021-03-19 |
Family
ID=75024139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021545603.7U Active CN212745089U (en) | 2020-07-30 | 2020-07-30 | Double-sealing top guiding cage type regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212745089U (en) |
-
2020
- 2020-07-30 CN CN202021545603.7U patent/CN212745089U/en active Active
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