CN211315199U - Eccentric half ball valve - Google Patents
Eccentric half ball valve Download PDFInfo
- Publication number
- CN211315199U CN211315199U CN201922206085.XU CN201922206085U CN211315199U CN 211315199 U CN211315199 U CN 211315199U CN 201922206085 U CN201922206085 U CN 201922206085U CN 211315199 U CN211315199 U CN 211315199U
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- valve rod
- valve
- lower valve
- hole
- rolling steel
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Abstract
The utility model discloses an eccentric half ball valve that can alleviate moment of torsion relates to the half ball valve field. The ball valve comprises a valve body, a hemisphere and a lower valve rod, wherein the hemisphere is arranged in the valve body, the lower valve rod movably penetrates through the valve body and is fixedly connected with the hemisphere, a through hole which is in running fit with the lower valve rod is formed in the valve body at the lower valve rod, a valve rod cover which covers the through hole is fixedly arranged at an opening in the outer side of the through hole, and a rolling steel ball is movably arranged between the valve rod cover and the lower valve rod. The current situation that changes originally lower valve rod and hemisphere clearance fit and with valve body fixed connection, and the cooperation through the rolling steel ball turns to, makes the rotatable setting of lower valve rod on the valve body, has reduced the area of contact of fitting surface, and the effect of dispersible power when the spherical pressurized surface atress of rolling steel ball still has the characteristics that the bearing capacity is big, has alleviateed the moment of torsion when opening and close the valve.
Description
Technical Field
The utility model relates to a hemisphere valve technical field specifically is an eccentric hemisphere valve.
Background
The eccentric semi-ball valve is opened or closed by rotating valve chain. The ball valve switch is light, small, reliable in sealing, simple in structure and convenient to maintain, the sealing surface and the spherical surface are always in a closed state and are not easy to erode by media, and the ball valve switch is widely applied to ideal transmission equipment for water, steam, sewage, petrochemical, natural gas, solution, ore pulp and other two-phase media, dust gas and the like. To further reduce torque, this application is filed.
Disclosure of Invention
The utility model aims at: in order to overcome the defects of the prior art, the utility model provides an eccentric half ball valve which can reduce the torque.
The technical scheme of the utility model: including valve body, hemispheroid and lower valve rod, the hemispheroid sets up in the valve body, lower valve rod activity run through on the valve body and with hemispheroid fixed connection, set up in the valve body of lower valve rod department with lower valve rod normal running fit's through-hole, the outside opening of through-hole sets firmly the valve rod lid that covers the through-hole, movable mounting has the roll steel ball between valve rod lid and the lower valve rod.
Adopt above-mentioned technical scheme, change valve rod and hemisphere clearance fit and with valve body fixed connection's current situation down originally, and then the cooperation through the roll steel ball makes the valve rod rotatable setting on the valve body down, has reduced the area of contact of fitting surface, and the effect of dispersibility when the spherical pressurized surface atress of roll steel ball still has the characteristics that the bearing capacity is big, has alleviateed the moment of torsion when opening and close the valve.
The utility model discloses a further setting: the number of the rolling steel balls is one, and the center of the rolling steel balls is located on the central axis of the lower valve rod.
With the above further arrangement, the torque is minimal when the number is one.
The utility model discloses a further setting again: the valve rod cover and the lower valve rod are respectively provided with a limiting groove for placing the rolling steel ball, the limiting groove is in a spherical curved surface groove shape to match with the spherical surface of the rolling steel ball, and a gap is formed between the valve rod cover and the lower valve rod.
By adopting the above further arrangement, the limiting groove has the function of limiting the rolling steel balls, and the lower valve rod is ensured to be not contacted with the valve rod cover by the gap.
The utility model discloses a still further set up: and a sealing element is arranged at an opening on the inner side of the through hole and is respectively in sealing fit with the through hole and the lower valve rod.
By adopting the above further arrangement, the medium is prevented from flowing out from the through hole, and the sealing is reasonable.
The utility model discloses a still further set up: the lower valve rod is further sleeved with a shaft sleeve, and the shaft sleeve is in running fit with the through hole.
By adopting the above further arrangement, the shaft sleeve plays a role in lubricating and reducing friction.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
the valve comprises a valve body 1, a hemisphere 2, a lower valve rod 3, a through hole 4, a valve rod cover 5, a rolling steel ball 6, a limiting groove 7, a gap 8, a sealing element 9 and a shaft sleeve 10.
Detailed Description
As shown in fig. 1 and 2, the eccentric half ball valve comprises a valve body 1, a hemisphere 2 and a lower valve rod 3, the hemisphere 2 is arranged in the valve body 1, the lower valve rod 3 is movably penetrated on the valve body 1 and forms a fixed connection with the hemisphere 2 in an interference fit manner, a through hole 4 which is matched with the lower valve rod 3 in a rotating manner is formed in the valve body 1 at the lower valve rod 3, a valve rod cover 5 which covers the through hole 4 is fixedly arranged at an opening at the outer side of the through hole 4, the valve rod cover 5 is fixed on the valve body 1 through a bolt, and a rolling steel ball 6 is movably arranged between the valve rod cover 5 and the lower valve rod 3. The number of the rolling steel balls 6 is one, the center of the rolling steel balls is located on the central axis of the lower valve rod 3, and the diameter of the lower valve rod 3 is 2-6 times of that of the rolling steel balls 6. The lower stem 3 rotates around the rolling ball 6, thereby opening and closing the valve to reduce the torque.
The valve rod cover 5 and the lower valve rod 3 are respectively provided with a limiting groove 7 for placing the rolling steel ball 6, the limiting groove 7 is in a spherical curved surface groove shape, and the limiting groove 7 can be attached to the spherical surface of the rolling steel ball 6. When the rolling steel ball mechanism works, the rolling steel ball 6 only moves in the limiting groove 7. A gap 8 is provided between the stem cover 5 and the lower stem 3, and the gap 8 increases the contact area to keep the lower stem 3 spaced from the stem cover 5 and avoid unnecessary contact.
And a sealing element 9 is arranged at the inner side opening of the through hole 4, the sealing element 9 is in sealing fit with the through hole 4 and the lower valve rod 3 respectively, and the sealing element 9 is used for sealing a gap between the lower valve rod 3 and the valve body 1.
Still the cover is equipped with axle sleeve 10 on the lower valve rod 3, and axle sleeve 10 and through-hole 4 normal running fit, axle sleeve 10 add lubricating oil to reduce the friction.
Claims (5)
1. The utility model provides an eccentric hemisphere valve, is including valve body, hemisphere and lower valve rod, the hemisphere sets up in the valve body, its characterized in that: the lower valve rod movably penetrates through the valve body and is fixedly connected with the hemispheroid, a through hole which is matched with the lower valve rod in a rotating mode is formed in the valve body at the lower valve rod, a valve rod cover which covers the through hole is fixedly arranged at an opening in the outer side of the through hole, and a rolling steel ball is movably arranged between the valve rod cover and the lower valve rod.
2. The eccentric hemispherical valve of claim 1, wherein: the number of the rolling steel balls is one, and the centers of the rolling steel balls are located on the central axis of the lower valve rod.
3. An eccentric hemispherical valve as in claim 2, wherein: the valve rod cover and the lower valve rod are respectively provided with a limiting groove for placing rolling steel balls, the limiting groove is in a spherical curved surface groove shape to match with a spherical surface of the rolling steel balls, and a gap is formed between the valve rod cover and the lower valve rod.
4. An eccentric hemispherical valve as claimed in claim 1 or 3, wherein: and a sealing element is arranged at an opening on the inner side of the through hole and is respectively in sealing fit with the through hole and the lower valve rod.
5. An eccentric hemispherical valve as claimed in claim 1 or 3, wherein: the lower valve rod is further sleeved with a shaft sleeve, and the shaft sleeve is in running fit with the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922206085.XU CN211315199U (en) | 2019-12-11 | 2019-12-11 | Eccentric half ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922206085.XU CN211315199U (en) | 2019-12-11 | 2019-12-11 | Eccentric half ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211315199U true CN211315199U (en) | 2020-08-21 |
Family
ID=72080766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922206085.XU Active CN211315199U (en) | 2019-12-11 | 2019-12-11 | Eccentric half ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211315199U (en) |
-
2019
- 2019-12-11 CN CN201922206085.XU patent/CN211315199U/en active Active
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