CN211649126U - Welding ball valve that floats - Google Patents
Welding ball valve that floats Download PDFInfo
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- CN211649126U CN211649126U CN201922468921.1U CN201922468921U CN211649126U CN 211649126 U CN211649126 U CN 211649126U CN 201922468921 U CN201922468921 U CN 201922468921U CN 211649126 U CN211649126 U CN 211649126U
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Abstract
The invention discloses a welded floating ball valve.A welded valve body is provided with a mounting hole, a valve cavity communicated with the mounting hole and a passage I communicated to the valve cavity, and a valve seat mounting seat I is arranged at the joint of the valve cavity and the passage I; the welding valve cover is provided with a through channel II, the welding valve cover is used for welding the welding valve body in a sealing manner, and the inner end of the channel II is provided with a valve seat mounting seat II; the ball body is provided with a valve hole for communicating the channel I and the channel II, and the ball body is arranged in the valve hole to communicate or block the channel I and the channel II; the valve rod is rotatably and hermetically arranged in the mounting hole of the welded valve body, one end of the valve rod is arranged outside the welded valve body, and the other end of the valve rod is connected with the ball body; the valve seats are respectively arranged in the valve seat mounting seat I and the valve seat mounting seat II and form sliding contact with the surface of the ball body; the disk spring is arranged in the valve seat mounting seat I and the valve seat in the valve seat mounting seat I forms a support. The valve body and the valve cover are connected in a welding mode, so that the sealing performance can be improved, and the overall thickness and weight of the valve can be reduced.
Description
Technical Field
The invention belongs to the technical field of pipeline equipment, and particularly relates to a welded floating ball valve.
Background
With the development of scientific technology and the increasing improvement of industrial technology, higher requirements are put on the reliability of the ball valve, and internal and external leakage is not allowed. The valve body and the valve cover of the floating ball valve in the prior art are connected through bolts, so that the condition of liquid leakage exists, and the using effect is not ideal enough.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a welded floating ball valve which can improve the reliability of the valve.
In order to solve the problems of the prior art, the invention discloses a welding floating ball valve, which comprises:
the welding valve body is provided with a mounting hole, a valve cavity communicated with the mounting hole and a passage I communicated to the valve cavity, and a valve seat mounting seat I is arranged at the joint of the valve cavity and the passage I;
the welding valve cover is provided with a through channel II, the welding valve cover is welded on the welding valve body in a sealing mode, and a valve seat mounting seat II is arranged at the inner end of the channel II;
the ball body is provided with a valve hole for communicating the channel I and the channel II, and the ball body is arranged in the valve cavity to communicate or block the channel I and the channel II;
the valve rod is rotatably and hermetically arranged in the mounting hole of the welded valve body, one end of the valve rod is arranged outside the welded valve body, and the other end of the valve rod is connected with the ball body;
the valve seats are respectively arranged in the valve seat mounting seat I and the valve seat mounting seat II and form sliding contact with the surface of the ball body; and
and the disc spring is arranged in the valve seat mounting seat I, and a valve seat in the valve seat mounting seat I forms a support.
Further, still include:
the pressing sleeve, the nut and the spring washer; the pressure sleeve, the spring washer and the nut are sequentially arranged from low to high on the valve rod and located at the position outside the welded valve body so as to fix the axial position of the valve rod.
Further, still include:
and the filler is arranged in a gap between the pressing sleeve and the welded valve body.
Further, still include:
the thrust pad is arranged at the joint of the valve rod and the ball body.
Furthermore, the excircle face of valve rod is equipped with seal groove I, be equipped with in the seal groove I be used for with the mounting hole pore wall of welding valve body forms dynamic seal's O shape sealing washer I.
Furthermore, the end of the welding valve cover is provided with a sealing part extending into the valve cavity, the outer circular surface of the sealing part is provided with a sealing groove II, and an O-shaped sealing ring II used for forming sealing with the valve cavity of the welding valve body is arranged in the sealing groove II.
Further, arc transition is adopted in the welded valve body.
Further, the welding valve body is provided with an end face I, the welding valve cover is provided with an end face II, and the end face I of the welding valve body is connected with the end face II of the welding valve cover in a welding mode.
Further, the channel I is perpendicular to the mounting hole.
Further, the device also comprises an O-shaped sealing ring IV and an O-shaped sealing ring III; the O-shaped sealing ring IV is arranged in the valve seat mounting seat II to seal a valve seat in the valve seat mounting seat II; and the O-shaped sealing ring III is arranged between the disc spring and the corresponding valve seat.
The invention has the following beneficial effects:
1. the valve body and the valve cover are connected in a sealing mode in a welding mode, and compared with a bolt connection structure, the valve body and the valve cover can improve sealing performance, reduce the overall thickness and weight of the valve and reduce production and transportation costs.
2. The ball body is elastically floated in the valve cavity through the elastic component, so that the adaptability of the ball body to temperature and pressure changes is greatly enhanced, and the reliability of the valve is further improved.
3. The corresponding positions in the valve body are all designed in an arc transition mode to reduce stress concentration.
Drawings
Fig. 1 is a sectional view showing the structure of a welded floating ball valve according to the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in figure 1, the welded floating ball valve comprises a welded valve body 1, a welded valve cover 2, a ball body 8, a valve rod 14, a valve seat 4, a belleville spring 6, a pressing sleeve 15, a nut 9, a spring washer 11, a packing 13, a thrust pad 12, an O-shaped sealing ring IV7 and an O-shaped sealing ring III 5.
The welded valve body 1 is provided with a mounting hole, a valve cavity communicated with the mounting hole and a passage I1.1 communicated to the valve cavity, and a valve seat mounting seat I is arranged at the joint of the valve cavity and the passage I1.1. Preferably, the channel I1.1 is perpendicular to the mounting hole.
The welded valve body 1 and the welded bonnet 2 are connected as follows: the welded valve body 1 has an end face I which is perpendicular to the channel I1.1 and is located at the other end of the welded valve body 1 opposite the channel I1.1. The welded valve cover 2 has an end face II which is perpendicular to the channel II 2.1. The end face I of the welded valve body 1 is connected with the end face II of the welded valve cover 2 in a welding mode, so that bolt connection in the prior art is replaced, sealing connection between two parts is achieved in the connecting mode, the thickness of the valve is reduced, the whole weight is reduced, and convenience is brought to cost reduction in the production and transportation processes.
The welded valve body 1 is of an integral forging structure, the wall thickness is uniform, the interior of the welded valve body adopts circular arc transition, the stress concentration is avoided, the operating torque is light, and the sealing performance is good.
The welding valve cover 2 is provided with a through channel II2.1, and the inner end of the channel II2.1 is provided with a valve seat mounting seat II. The ball 8 is provided with a valve hole 8.1 for communicating the channel I1.1 and the channel II2.1, the ball 8 is arranged in the valve cavity to communicate or block the channel I1.1 and the channel II2.1, and the valve hole 8.1 of the ball 8 is vertical to the rotation axis of the ball 8. With the rotation of the ball 8, the valve hole 8.1 of the ball 8 is staggered or coaxial with the channel I1.1 and the channel II2.1, so as to realize the conduction or the blockage of the internal channel.
When the valve hole 8.1 of the sphere 8 is coaxial with the channel I1.1 and the channel II2.1, the valve opening is maximum, when the valve hole 8.1 of the sphere 8 is partially staggered with the channel I1.1 and the channel II2.1, the valve opening is reduced, and when the valve hole 8.1 of the sphere 8 is completely staggered with the channel I1.1 and the channel II2.1, the valve is closed.
The valve rod 14 is rotatably and hermetically arranged in the mounting hole of the welded valve body 1, one end of the valve rod is arranged outside the welded valve body 1, and the other end of the valve rod is connected with the ball body 8. The valve seats 4 are respectively provided in the valve seat mount I and the valve seat mount II and are brought into sliding contact with the surface of the ball 8. The inner end of the valve stem 14 and the ball 8 are provided with flat holes for connecting the two.
A disk spring 6 is arranged in the valve seat I and forms a support for the valve seat 4 in the valve seat I. Due to the existence of the disk spring 6, the ball body 8 can always act on the disk spring 6 and the valve seat 4 when a certain displacement is generated in the valve cavity, so that the adaptability of the ball body 8 to temperature and pressure changes is improved, and leakage is avoided.
The pressing sleeve 15, the spring washer 11 and the nut 9 are sequentially arranged on the valve rod 14 from low to high at positions outside the welded valve body 1 to fix the axial position of the valve rod 14. The pressure sleeve 15 is pressed by the spring washer 11, and the compression of the spring washer 11 compensates for the wear of the packing 13 during the opening and closing of the valve.
The packing 13 is arranged in the gap between the pressing sleeve 15 and the welded valve body 1. The filler 13 is graphite filler, is more suitable for high temperature resistant environment, and enhances the sealing performance at high temperature.
A thrust pad 12 is provided at the junction of the valve stem 14 and the ball 8. The thrust washer 12 can reduce the friction between the valve body 1 and the valve stem 14 to reduce the valve torque.
The outer circle surface of the valve rod 14 is provided with a sealing groove I, and an O-shaped sealing ring I10 used for forming dynamic sealing with the wall of the mounting hole of the welded valve body 1 is arranged in the sealing groove I. Similarly, the end of the welded valve cover 2 is provided with a sealing part extending into the valve cavity, the outer circular surface of the sealing part is provided with a sealing groove II, and an O-shaped sealing ring II3 for forming a seal with the valve cavity of the welded valve body 1 is arranged in the sealing groove II.
The compression of the O-shaped sealing ring can provide clearance for the ball 8 during installation and pretightening force required by the valve seat 4, and the leakage of media from the welding valve cover 2, the welding valve body 1 and the valve seat 4 is avoided.
The O-shaped sealing ring III5 is arranged between the disc spring 6 and the corresponding valve seat 4; an O-ring IV7 is provided in the valve seat mounting II to seal the valve seat 4 in the valve seat mounting II.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A welding ball valve that floats which characterized in that: the method comprises the following steps:
the welding valve comprises a welding valve body (1), wherein the welding valve body (1) is provided with a mounting hole, a valve cavity communicated with the mounting hole and a passage I (1.1) communicated to the valve cavity, and a valve seat mounting seat I is arranged at the joint of the valve cavity and the passage I (1.1);
the welding valve comprises a welding valve cover (2), wherein the welding valve cover (2) is provided with a through channel II (2.1), the welding valve cover (2) is welded on the welding valve body (1) in a sealing mode, and a valve seat mounting seat II is arranged at the inner end of the channel II (2.1);
a ball (8), wherein the ball (8) is provided with a valve hole (8.1) for communicating the channel I (1.1) and the channel II (2.1), and the ball (8) is arranged in the valve hole to communicate or block the channel I (1.1) and the channel II (2.1);
the valve rod (14) is rotatably and hermetically arranged in the mounting hole of the welded valve body (1), one end of the valve rod (14) is arranged outside the welded valve body (1), and the other end of the valve rod is connected with the ball body (8);
the valve seat (4) is respectively arranged in the valve seat mounting seat I and the valve seat mounting seat II, and forms sliding contact with the surface of the ball body (8); and
and the disc spring (6) is arranged in the valve seat mounting seat I, and the valve seat (4) in the valve seat mounting seat I forms a support.
2. A welded floating ball valve according to claim 1, wherein: further comprising:
the pressing sleeve (15), the nut (9) and the spring washer (11); the pressure sleeve (15), the spring washer (11) and the nut (9) are sequentially arranged from low to high on the valve rod (14) and located at the axial position of the position outside the welded valve body (1) for fixing the valve rod (14).
3. A welded floating ball valve according to claim 2, wherein: further comprising:
the packing (13) is arranged in a gap between the pressing sleeve (15) and the welded valve body (1).
4. A welded floating ball valve according to claim 1, wherein: further comprising:
the thrust pad (12), thrust pad (12) is located the junction of valve rod (14) and spheroid (8).
5. A welded floating ball valve according to claim 1, wherein: the outer disc of valve rod (14) is equipped with seal groove I, be equipped with in the seal groove I be used for with the mounting hole pore wall of welding valve body (1) forms dynamic seal's O shape sealing washer I (10).
6. A welded floating ball valve according to claim 1, wherein: the tip of welding valve gap (2) is equipped with and stretches into sealing in the valve pocket, the excircle face of sealing is equipped with seal groove II, be equipped with in the seal groove II be used for with the valve pocket of welding valve body (1) forms sealed O shape sealing washer II (3).
7. A welded floating ball valve according to claim 1, wherein: the welding valve body (1) is internally in arc transition.
8. A welded floating ball valve according to claim 1, wherein: the welding valve body (1) is provided with an end face I, the welding valve cover (2) is provided with an end face II, and the end face I of the welding valve body (1) is connected with the end face II of the welding valve cover (2) in a welding mode.
9. A welded floating ball valve according to claim 1, wherein: the channel I (1.1) is perpendicular to the mounting hole.
10. A welded floating ball valve according to claim 1, wherein: the sealing device also comprises an O-shaped sealing ring IV (7) and an O-shaped sealing ring III (5); the O-shaped sealing ring IV (7) is arranged in the valve seat mounting seat II to seal a valve seat (4) in the valve seat mounting seat II; the O-shaped sealing ring III (5) is arranged between the disc spring (6) and the corresponding valve seat (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468921.1U CN211649126U (en) | 2019-12-31 | 2019-12-31 | Welding ball valve that floats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922468921.1U CN211649126U (en) | 2019-12-31 | 2019-12-31 | Welding ball valve that floats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211649126U true CN211649126U (en) | 2020-10-09 |
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ID=72701977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922468921.1U Active CN211649126U (en) | 2019-12-31 | 2019-12-31 | Welding ball valve that floats |
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| Country | Link |
|---|---|
| CN (1) | CN211649126U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161082A (en) * | 2020-10-28 | 2021-01-01 | 苏州特思克流体控制设备有限公司 | Constant temperature heat preservation ball valve |
-
2019
- 2019-12-31 CN CN201922468921.1U patent/CN211649126U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112161082A (en) * | 2020-10-28 | 2021-01-01 | 苏州特思克流体控制设备有限公司 | Constant temperature heat preservation ball valve |
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