CN219911836U - Scour-proof and crystallization-proof ball valve - Google Patents
Scour-proof and crystallization-proof ball valve Download PDFInfo
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- CN219911836U CN219911836U CN202321711090.6U CN202321711090U CN219911836U CN 219911836 U CN219911836 U CN 219911836U CN 202321711090 U CN202321711090 U CN 202321711090U CN 219911836 U CN219911836 U CN 219911836U
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Abstract
The utility model discloses an anti-scour and anti-crystallization ball valve, which relates to the technical field of valves and comprises a valve body and a base, wherein the valve body is provided with an inlet cavity and an outlet cavity, a valve rod is arranged in the valve body, the valve rod is connected with the base in a matched manner, a ball body is arranged on the ball body, a ball body channel and a sealing surface are arranged on the ball body, the inlet cavity is provided with a single valve seat, the valve seat and the sealing surface form a sealed fit, the upper end of the valve rod is connected with a pneumatic device, the pneumatic device can drive the valve rod to rotate so as to drive the ball body to rotate, the ball body is provided with a first position, in which the ball body channel is communicated with the inlet cavity and the outlet cavity, and a second position, in which the sealing surface is isolated from the inlet cavity and the outlet cavity, the ball body channel comprises an inlet end and an outlet end, and a cutting surface is arranged at an included angle formed by the cutting surface and the central axis of the ball body channel is 67 degrees. The valve can effectively relieve the scouring of the medium to the inner cavity flow channel and the ball body when the valve is opened, and has good crystallization prevention effect.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to an anti-scouring and anti-crystallization ball valve.
Background
The ball valve is a valve whose opening and closing member (ball body) is driven by valve stem and can be rotated around the axis of ball valve, and is mainly used for cutting off, distributing and changing flow direction of medium in pipeline, and can be tightly closed by means of operation of rotating 90 deg. and small rotating moment. When the existing ball valve is used for conveying gas-solid-liquid three-phase mixed fluid containing bubbles and particles, the following problems exist: 1. when the valve is opened by 1/8, the outlet area of the outlet side is small, the pressure is concentrated on one point of the outlet side, and the flow passage and the ball body in the inner cavity of the valve body are seriously washed, so that the service life of the valve is short; 2. the valve is easy to crystallize and jam, and the use is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides an anti-scouring and anti-crystallization ball valve.
The technical scheme provided by the utility model is as follows:
the utility model provides an scour protection and crystallization-preventing ball valve, includes valve body, base, the valve body is equipped with inlet chamber and exit chamber, be equipped with the valve rod in the valve body, the valve rod is connected with the spheroid with the base cooperation, be equipped with spheroid passageway and sealed face on the spheroid, the inlet chamber is equipped with single disk seat, the disk seat constitutes sealing fit with sealed face, pneumatic means is connected to the valve rod upper end, pneumatic means can drive the valve rod and rotate to drive the spheroid and rotate, the spheroid has the first position and the sealed isolated inlet chamber of spheroid passageway intercommunication inlet chamber and exit chamber and the second position in sealed face and exit chamber, the spheroid passageway includes entrance point and exit point, the exit point is equipped with the cutting face, the contained angle that cutting face and spheroid passageway axis constitute is 67.
Valve caps are arranged between the base and the valve body, and the valve caps are fixedly connected with the base and the valve body through screws.
Gaskets and O-shaped rings are arranged between the valve cover and the base and between the valve cover and the valve body.
The side of the valve seat, which is contacted with the ball body, is provided with a soft sealing ring, and the contact surface of the soft sealing ring and the ball body is a curved surface.
The valve seat is in a ladder shape close to the valve body, and O-shaped rings are arranged between the transverse ladder surface of the valve seat and the valve body.
The packing box is sleeved outside the valve rod, an O-shaped ring is arranged between the packing box and the valve rod, a supporting frame is arranged above the packing box, and the supporting frame is fixedly connected with the pneumatic device and the packing box respectively.
An anti-rotation pin is arranged between the stuffing box and the supporting frame.
The outlet cavity is bell-mouthed.
The utility model has the beneficial effects that: according to the utility model, the cutting surface forming an included angle of 67 degrees with the central axis of the sphere channel is arranged on the outlet side of the sphere, so that the valve provides a buffer space for media in the period from closing to opening of 1/8, the outlet area is basically the same as that of the full opening when the valve is opened for 2/3, flushing of the inner cavity channel and the sphere by the media is effectively relieved, the single valve seat is arranged in the valve body, the outlet cavity is communicated with the middle cavity, the media entering the middle cavity flows out from the outlet cavity under the action of the dead weight, the medium cannot remain in the middle cavity, and therefore, the valve shaft clamping stagnation caused by crystallization of the media remaining in the middle cavity can be prevented, and the design of the single valve seat can also save the manufacturing cost.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 2 is a schematic view of a sphere according to an embodiment of the present utility model;
fig. 3 is a schematic cross-sectional view of a sphere according to an embodiment of the present utility model.
Detailed Description
Embodiments of the present utility model are further described below with reference to the accompanying drawings.
As shown in figures 1-3, an anti-scouring and anti-crystallization ball valve comprises a valve body 6 and a base 13, wherein the valve body 6 is provided with an inlet cavity 11 and an outlet cavity 12, a valve rod 8 is arranged in the valve body 6, the valve rod 8 is connected with a ball 7 in a matched manner with the base 13, a sliding bearing and a sliding gasket are arranged on the base 13, the valve rod 8 is ensured to drive the ball 7 to rotate smoothly without blocking, a ball channel 72 and a sealing surface 73 are arranged on the ball 7, the inlet cavity 11 is provided with a single valve seat 9, the valve seat 9 and the sealing surface 73 form sealing fit, the upper end of the valve rod 8 is connected with a pneumatic device 1 through a flat key and a connecting shaft, and the pneumatic device 1 can drive the valve rod 8 to rotate, so that the ball 7 is driven to rotate. The valve rod 8 rotates clockwise, the sphere channel 72 is communicated with the inlet cavity 11 and the outlet cavity 12, and the valve is opened; the valve stem 8 rotates anticlockwise and the sealing surface 73 seals the inlet chamber 11 from the outlet chamber 12 and the valve is closed.
In this embodiment, the sphere channel 72 comprises an inlet end 74 and an outlet end 75, the outlet end 75 is provided with a cutting surface 71, and an included angle a formed by the cutting surface 71 and the central axis of the sphere channel is 67 degrees. During the period from closing to opening of the valve 1/8, as the ball 7 is partially cut, the cut part provides buffer space for the medium, when the valve is opened 2/3, the outlet area is basically the same as that of the valve when the valve is opened, the flushing of the medium to the inner cavity flow channel and the ball is effectively relieved, a single valve seat is arranged in the valve body, the outlet cavity is communicated with the middle cavity, the medium entering the middle cavity flows out of the outlet cavity under the action of dead weight, the medium cannot be remained in the middle cavity, the valve shaft clamping stagnation caused by the crystallization of the medium remained in the middle cavity can be prevented, and the design of the single valve seat can also save the manufacturing cost.
In this embodiment, be equipped with valve gap 5 between base 13 and the valve body 6, valve gap 5 and base 13, valve gap 5 and valve body 6 all pass through screw fixed connection, and the equipment of being convenient for all is equipped with gasket and O type circle between valve gap 5 and the base 13, between valve gap 5 and the valve body 6, ensures the leakproofness of junction.
In this embodiment, the contact side of the valve seat 13 and the ball 7 is provided with the soft sealing ring 10, the contact surface of the soft sealing ring 10 and the ball 7 is a curved surface, the curved surface is good in attaching tightness, loss can be reduced, the side of the valve seat 13 close to the valve body 6 is in a step shape, and an O-shaped ring is arranged between the transverse step surface of the valve seat 13 and the valve body 6, so that a medium in an inlet cavity cannot enter the valve body cavity through a gap between the valve seat 13 and the ball 7.
In this embodiment, the packing box 3 is sleeved outside the valve rod 8, an O-ring is arranged between the packing box 3 and the valve rod 8, the support frame 2 is arranged above the packing box 3, the support frame 2 is fixedly connected with the pneumatic device 1 and the packing box 3 respectively, the anti-rotation pin 14 is arranged between the packing box 3 and the support frame 2, the packing box can ensure the tightness of the valve rod, and the anti-rotation pin fixes the packing box so that the packing box cannot rotate along with the rotation of the valve rod.
In this embodiment, the outlet chamber 12 is bell-mouthed, so that the medium in the middle chamber flows down along the inclined wall and flows out of the outlet chamber under the action of the dead weight, and the crystallization preventing capability of the valve is further enhanced.
The examples should not be construed as limiting the utility model, and any non-inventive modifications based on the spirit of the utility model should be regarded as being within the scope of the utility model.
Claims (8)
1. The utility model provides an scour protection and crystallization-preventing ball valve, includes valve body, base, the valve body is equipped with inlet chamber and export chamber, be equipped with the valve rod in the valve body, the valve rod is connected with the spheroid with the base cooperation, be equipped with spheroid passageway and sealed face on the spheroid, the inlet chamber is equipped with single disk seat, the disk seat constitutes sealing fit with sealed face, pneumatic means is connected to the valve rod upper end, pneumatic means can drive the valve rod and rotate to drive the spheroid and rotate, the spheroid has the isolated inlet chamber of spheroid passageway intercommunication inlet chamber and outlet chamber's first position and sealed face and the isolated inlet chamber of outlet chamber's second position, its characterized in that: the sphere channel comprises an inlet end and an outlet end, the outlet end is provided with a cutting surface, and an included angle formed by the cutting surface and the central axis of the sphere channel is 67 degrees.
2. The anti-scour and anti-crystallization ball valve according to claim 1, wherein: valve caps are arranged between the base and the valve body, and the valve caps are fixedly connected with the base and the valve body through screws.
3. The anti-scour and anti-crystallization ball valve according to claim 2, wherein: gaskets and O-shaped rings are arranged between the valve cover and the base and between the valve cover and the valve body.
4. The anti-scour and anti-crystallization ball valve according to claim 1, wherein: the side of the valve seat, which is contacted with the ball body, is provided with a soft sealing ring, and the contact surface of the soft sealing ring and the ball body is a curved surface.
5. The anti-scour and anti-crystallization ball valve according to claim 1, wherein: the valve seat is in a ladder shape close to the valve body, and O-shaped rings are arranged between the transverse ladder surface of the valve seat and the valve body.
6. The anti-scour and anti-crystallization ball valve according to claim 1, wherein: the packing box is sleeved outside the valve rod, an O-shaped ring is arranged between the packing box and the valve rod, a supporting frame is arranged above the packing box, and the supporting frame is fixedly connected with the pneumatic device and the packing box respectively.
7. The anti-scour and anti-crystallization ball valve according to claim 6, wherein: an anti-rotation pin is arranged between the stuffing box and the supporting frame.
8. The anti-scour and anti-crystallization ball valve according to claim 1, wherein: the outlet cavity is bell-mouthed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321711090.6U CN219911836U (en) | 2023-07-03 | 2023-07-03 | Scour-proof and crystallization-proof ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321711090.6U CN219911836U (en) | 2023-07-03 | 2023-07-03 | Scour-proof and crystallization-proof ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219911836U true CN219911836U (en) | 2023-10-27 |
Family
ID=88467502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321711090.6U Active CN219911836U (en) | 2023-07-03 | 2023-07-03 | Scour-proof and crystallization-proof ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219911836U (en) |
-
2023
- 2023-07-03 CN CN202321711090.6U patent/CN219911836U/en active Active
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