CN210830576U - Three-eccentric rotary valve with replaceable valve seat - Google Patents
Three-eccentric rotary valve with replaceable valve seat Download PDFInfo
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- CN210830576U CN210830576U CN201921634154.0U CN201921634154U CN210830576U CN 210830576 U CN210830576 U CN 210830576U CN 201921634154 U CN201921634154 U CN 201921634154U CN 210830576 U CN210830576 U CN 210830576U
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- conical surface
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Abstract
The utility model relates to a triple offset rotary valve with a replaceable valve seat, which comprises a valve body, a ball support, a conical surface sealing part, a valve seat and a circulation channel, wherein the ball support is connected inside the valve body in a shaft way and is connected with an actuating mechanism outside the valve body; the conical surface sealing part is fixed on the spherical support; the valve seat is detachably fixed on the valve body and is matched with the conical surface sealing part to form a sealing pair; the flow channel is arranged on the ball support, and the angle formed by the perpendicular bisector of the conical surface sealing part and the axis of the flow channel is 90 degrees. Compared with the prior art, the conical surface sealing part and the valve seat main body in the three-eccentric rotary valve with the replaceable valve seat are designed in a replaceable mode, so that the valve seat maintenance efficiency is improved, and the maintenance cost is saved; the annular pressing plate, the fastening bolt and the annular flange are matched, and the valve seat and the spring assembly are matched, so that the replaced valve seat main body is stably fixed, and the unstable fixation caused by gap vacancy after valve seat maintenance and replacement is avoided.
Description
Technical Field
The utility model relates to a three eccentric rotary valve especially relates to a removable three eccentric rotary valve of disk seat.
Background
The opening and closing part of the rotary valve is a ball with a circular channel, and the ball rotates around an axis vertical to the channel and rotates along with the valve rod so as to achieve the purpose of opening and closing the channel. The rotary valve can be closed tightly only by rotating 90 degrees and a small rotating moment. Different driving devices can be assembled to form rotary valves with different control methods according to the requirements of working conditions, such as an electric rotary valve, a pneumatic rotary valve, a hydraulic rotary valve and the like.
When the rotary valve rotates 90 degrees, the inlet and the outlet are all sealing surfaces, so that the valve is closed and the flow of the medium is cut off. When the rotary valve is rotated 90 degrees, all flow ports should be present at the inlet and outlet ports, thereby opening flow and having substantially no flow resistance. The upper end opening and the lower end opening of the rotary valve are connected with the valve body in a shaft mode, and the valve is opened and closed after rotating around the shaft.
However, the rotary valve is worn on the sealing surface of the valve seat in the long-term use process, so that the sealing performance is reduced, the whole valve body needs to be disassembled at the moment, then the valve seat is replaced, the process consumes time and labor, and the cost for replacing the valve seat is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a removable three eccentric rotary valve of disk seat in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model discloses removable three eccentric rotary valves of well disk seat, including valve body, ball support, conical surface sealing, disk seat and circulation passageway, wherein specifically:
the ball support is coupled inside the valve body and connected with an actuating mechanism outside the valve body;
the conical surface sealing part is fixed on the spherical support, namely, the two sides of the conical surface sealing part are provided with inclined surface chamfers, the inclined surface chamfers enable the part to form a structure with a conical surface on the side surface, and a sealing pair is formed by the conical surface structure and the annular sealing surface.
The valve seat is detachably fixed on the valve body and is matched with the conical surface sealing part to form a sealing pair;
the flow channel is arranged on the ball support, and the angle formed by the perpendicular bisector of the conical surface sealing part and the axis of the flow channel is 90 degrees.
Furthermore, the conical surface sealing part is of a triple eccentric structure, and the valve seat is of a triple eccentric structure matched with the conical surface sealing part.
Further, the valve seat includes:
a valve seat body;
the valve seat fixing piece is used for fixing the valve seat main body on the valve body;
and one end of the spring component is fixed on the valve body, and the other end of the spring component is abutted against the valve seat main body. The spring assembly enables the valve seat main body to have reverse pretightening force when the valve seat main body is sealed in the forward direction, and the sealing performance is improved through the reverse pretightening force.
Furthermore, a circle of annular sealing surface is arranged on the valve seat main body, and the annular sealing surface is matched with the conical surface sealing part to form a sealing pair.
Furthermore, a ring of annular flange is arranged on the valve seat main body.
Further, the valve seat fixing piece comprises an annular pressure plate and a fastening bolt;
the annular pressure plate is pressed on the annular flange, and the fastening bolt penetrates through the annular pressure plate and is in threaded connection with the valve body, so that the valve seat main body is fastened.
Further, the spring assembly includes:
the spring seat is fixed on the valve body;
and one end of the spring is fixed in the spring seat, and the other end of the spring is connected with the valve seat main body.
Furthermore, a graphite sealing ring is arranged between the spring and the valve seat main body.
Furthermore, a composite gasket is arranged between the valve seat main body and the valve body.
Further, the composite gasket is a graphite-resin composite gasket or a graphite-metal composite gasket.
Compared with the prior art, the utility model has the advantages of it is following:
1) in the three-eccentric rotary valve with the replaceable valve seat, the conical surface sealing part and the valve seat main body are designed in a replaceable mode, on-site online replacement is facilitated, the valve seat maintenance efficiency is improved, and the maintenance cost is saved.
2) The annular pressing plate, the fastening bolt and the annular flange are matched, so that the replaced valve seat main body is stably fixed, and unstable fixation caused by gap vacancy after valve seat maintenance and replacement is avoided. Through the cooperation at removable disk seat and spring unit for the disk seat receives continuous pretightning force, makes the suitability between disk seat and the valve body more excellent, avoids the matching problem that appears after disk seat maintenance, the change, has further improved sealing performance.
3) The valve seat in the technical scheme adopts the replaceable structure, and simultaneously adopts the conical surface sealing part in the three-eccentric mode and the annular sealing surface matched with the conical surface sealing part, so that the whole structure has the advantages of large flow capacity, wide adjustable range, safety, reliability, rapid opening and closing and the like.
Drawings
Fig. 1 is a schematic structural diagram of a ball and a valve seat in a triple offset rotary valve with a replaceable valve seat of the present invention.
In the figure: 1. the ball valve comprises a ball support, 2, a ball crown part, 3, a valve seat, 4, a flow passage, 5, a composite gasket, 31, a valve seat main body, 32, a valve seat fixing part, 33, a spring component, 311, an annular sealing surface, 312, an annular flange, 331, a spring seat, 332, a spring, 333 and a graphite sealing ring.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
The utility model discloses a triple offset rotary valve with a replaceable valve seat, which comprises a valve body, a ball support 1, a conical surface sealing part 2, a valve seat 3 and a circulation channel 4, wherein the ball support 1 is connected inside the valve body by a shaft and is connected with an actuating mechanism outside the valve body; the conical sealing part 2 is fixed on the spherical support 1, namely, the two sides of the conical sealing part are provided with inclined chamfers, the inclined chamfers enable the part to form a structure with a conical side surface, and a sealing pair is formed by the conical structure and the annular sealing surface 311. The valve seat 3 is detachably fixed on the valve body and is matched with the conical surface sealing part 2 to form a sealing pair; the flow channel 4 is arranged on the sphere support 1, and the angle formed by the perpendicular bisector of the conical sealing part 2 and the axis of the flow channel 4 is 90 degrees. A composite gasket 5 is arranged between the valve seat main body 31 and the valve body. The composite washer 5 is a graphite-resin composite washer or a graphite-metal composite washer.
The conical surface sealing part 2 is of a three-eccentric structure, and the valve seat 3 is of a three-eccentric structure matched with the conical surface sealing part 2. The conical surface sealing part 2 in the triple eccentric mode and the annular sealing surface 311 matched with the conical surface sealing part have the advantages of large flow capacity, wide adjustable range, safety, reliability, quick opening and closing and the like, and the existing triple eccentric cam principle realizes that the conical surface sealing part 2 can be quickly separated from the valve seat main body 31 when the conical surface sealing ring and the valve seat are opened, so that the friction damage of the sealing surface is reduced, the operation torque is reduced, and the contact sealing effect of the valve seat main body 31 and the conical surface sealing part 2 is good.
The valve seat 3 comprises a valve seat main body 31 and a spring assembly 33, and the valve seat fixing member 32 fixes the valve seat main body 31 on the valve body; the spring unit 33 has one end fixed to the valve body and the other end abutting against the valve seat main body 31. The spring assembly 33 enables the valve seat main body 31 to have reverse pretightening force when sealing in the forward direction, and the sealing performance is improved through the reverse pretightening force. The valve seat main body 31 is provided with a circle of annular sealing surface 311, and the annular sealing surface 311 is matched with the conical surface sealing part 2 to form a sealing pair. The valve seat body 31 is provided with a ring-shaped flange 312. The valve seat fixing member 32 includes an annular pressing plate 321 and a fastening bolt 322; the annular pressing plate 321 presses the annular flange 312, and the fastening bolt 322 penetrates through the annular pressing plate 321 and is screwed on the valve body, so that the valve seat main body 31 is fastened. The annular pressing plate 321, the fastening bolt 322 and the annular flange 312 are matched, so that the replaced valve seat main body 31 is stably fixed, and unstable fixation caused by gap vacancy after valve seat maintenance and replacement is avoided.
The spring assembly 33 comprises a spring seat 331 and a spring seat 331, and the spring seat 331 is fixed on the valve body; the spring 332 has one end fixed in the spring seat 331 and the other end connected to the valve seat main body 31. A graphite seal ring 333 is provided between the spring 332 and the valve seat main body 31. Through the cooperation at removable disk seat and spring unit 33 for the disk seat receives continuous pretightning force, makes the suitability between disk seat and the valve body more excellent, avoids the matching problem that appears after disk seat maintenance, the change, has further improved sealing performance.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A triple offset rotary valve with a replaceable valve seat, comprising:
a valve body;
the ball support (1) is coupled inside the valve body and connected with an actuating mechanism outside the valve body;
the conical surface sealing part (2) is fixed on the spherical support (1);
the valve seat (3) is detachably fixed on the valve body and is matched with the conical surface sealing part (2) to form a sealing pair;
the flow channel (4) is arranged on the spherical support (1), and the angle formed by the perpendicular bisector of the conical surface sealing part (2) and the axis of the flow channel (4) is 90 degrees.
2. The triple offset rotary valve with replaceable valve seat as claimed in claim 1, wherein the conical sealing portion (2) is of a triple offset structure and the valve seat (3) is of a triple offset structure matching the conical sealing portion (2).
3. Triple eccentric rotary valve with replaceable valve seat according to claim 1, characterized in that the valve seat (3) comprises:
a valve seat main body (31);
a valve seat fixing member (32) for fixing the valve seat main body (31) to the valve body;
and a spring unit (33) having one end fixed to the valve body and the other end abutting against the valve seat body (31).
4. A triple eccentric rotary valve with replaceable valve seat according to claim 3, characterized in that the valve seat body (31) is provided with a ring-shaped sealing surface (311), and the ring-shaped sealing surface (311) cooperates with the conical sealing part (2) to form a sealing pair.
5. The triple eccentric rotary valve with replaceable valve seat as claimed in claim 3, wherein the valve seat body (31) is provided with a ring-shaped flange (312).
6. The triple eccentric rotary valve with replaceable valve seat as claimed in claim 5, wherein the valve seat fixing member (32) comprises an annular pressing plate (321) and a fastening bolt (322);
the annular pressure plate (321) is pressed on the annular flange (312), and the fastening bolt (322) penetrates through the annular pressure plate (321) and is screwed on the valve body, so that the valve seat main body (31) is fastened.
7. The triple offset rotary valve with replaceable valve seat as set forth in claim 5, wherein the spring assembly (33) comprises:
a spring seat (331) fixed to the valve body;
and a spring (332) having one end fixed to the spring seat (331) and the other end connected to the valve seat main body (31).
8. The triple offset rotary valve with replaceable valve seat as claimed in claim 7, wherein a graphite sealing ring (333) is provided between the spring (332) and the valve seat body (31).
9. A triple offset rotary valve with replaceable valve seat as claimed in claim 3 wherein a composite washer (5) is provided between the valve seat body (31) and the valve body.
10. The triple eccentric rotary valve with replaceable valve seat as claimed in claim 3, wherein the composite washer (5) is a graphite-resin composite washer or a graphite-metal composite washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634154.0U CN210830576U (en) | 2019-09-26 | 2019-09-26 | Three-eccentric rotary valve with replaceable valve seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921634154.0U CN210830576U (en) | 2019-09-26 | 2019-09-26 | Three-eccentric rotary valve with replaceable valve seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210830576U true CN210830576U (en) | 2020-06-23 |
Family
ID=71261838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921634154.0U Active CN210830576U (en) | 2019-09-26 | 2019-09-26 | Three-eccentric rotary valve with replaceable valve seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210830576U (en) |
-
2019
- 2019-09-26 CN CN201921634154.0U patent/CN210830576U/en active Active
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