CN222416114U - Hard seal cutting ball valve - Google Patents
Hard seal cutting ball valve Download PDFInfo
- Publication number
- CN222416114U CN222416114U CN202421060347.0U CN202421060347U CN222416114U CN 222416114 U CN222416114 U CN 222416114U CN 202421060347 U CN202421060347 U CN 202421060347U CN 222416114 U CN222416114 U CN 222416114U
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- Prior art keywords
- valve
- valve body
- ball
- sealing
- hard seal
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- 238000005520 cutting process Methods 0.000 title description 2
- 238000007789 sealing Methods 0.000 claims abstract description 63
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 16
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000011010 flushing procedure Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
本实用新型公开了一种硬密封切断球阀，其技术方案要点是包括有第一阀体和第二阀体，第一阀体和第二阀体合围形成安装腔，第一阀体和第二阀体上均设置有供介质流通的通道，介质沿着第一阀体流向第二阀体，安装腔内安装有球体；球体与第一阀体和第二阀体之间均设置有阀座；阀座与第一阀体之间设置有第一密封件，阀座与第二阀体之间设置有第二密封件；第一阀体或第二阀体上设置有使球体向第二密封件移动的辅助部件；球体上设置有第一镍基硬质合金层，阀座包括有密封面，密封面上设置有第二镍基硬质合金层，该硬密封切断球阀能够降低设备成本，简化工艺生产。
The utility model discloses a hard-sealed cut-off ball valve, the technical solution of which mainly comprises a first valve body and a second valve body, the first valve body and the second valve body together form an installation cavity, the first valve body and the second valve body are both provided with channels for medium circulation, the medium flows along the first valve body to the second valve body, a ball is installed in the installation cavity; valve seats are both provided between the ball and the first valve body and the second valve body; a first sealing member is provided between the valve seat and the first valve body, and a second sealing member is provided between the valve seat and the second valve body; an auxiliary component for moving the ball toward the second sealing member is provided on the first valve body or the second valve body; a first nickel-based hard alloy layer is provided on the ball, the valve seat comprises a sealing surface, and a second nickel-based hard alloy layer is provided on the sealing surface. The hard-sealed cut-off ball valve can reduce equipment cost and simplify process production.
Description
Technical Field
The present utility model relates to a ball valve, and more particularly, to a hard seal shut-off ball valve.
Background
The valve is a control component in a fluid conveying system, and particularly, the ball valve is widely applied to various fields of petroleum, chemical industry, medicine, metallurgy, mine, food, municipal construction and the like.
If the existing low-torque all-metal double-graphite hard sealing ball valve is provided with the application number of CN201710464378.0, the influence of deformation or error on initial force is reduced by additionally arranging a disc spring and a sealing ring at the valve seat, so that the minimum sealing force can be realized under the condition of meeting the minimum sealing specific pressure.
The disc spring structures are arranged on two sides of the ball body, so that the defects of high equipment cost and complex process are caused, and in addition, in the using process of the equipment, the service life of the disc spring can be reduced when the disc spring on the output side is flushed for a long time by liquid in the valve, so that the sealing effect of the side is weakened, and the integral use of the equipment is influenced.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model aims to provide the hard seal cutting-off ball valve which can reduce equipment cost and simplify process production.
In order to achieve the aim, the utility model provides the technical scheme that the hard seal cutoff ball valve comprises a first valve body and a second valve body, wherein an installation cavity is formed by the first valve body and the second valve body in a surrounding mode, channels for medium circulation are formed in the first valve body and the second valve body, the medium flows to the second valve body along the first valve body, and a ball body is installed in the installation cavity;
valve seats are arranged between the ball body and the first valve body and between the ball body and the second valve body;
A first sealing element is arranged between the valve seat and the first valve body, and a second sealing element is arranged between the valve seat and the second valve body;
An auxiliary component for enabling the ball body to move towards the second sealing element is arranged on the first valve body or the second valve body;
The ball body is provided with a first nickel-based hard alloy layer, the valve seat comprises a sealing surface, and the sealing surface is provided with a second nickel-based hard alloy layer.
In summary, the hard sealing cutoff ball valve has the advantages that the first valve body and the second valve body are surrounded to form the installation cavity for installing the ball body, and the medium flows out from the inlet end of the first valve body through the ball body and finally flows out from the outlet end of the second valve body, so that the hard sealing cutoff ball valve is designed to be in a unilateral flow direction.
The first sealing piece is arranged at the inlet end of the fluid, the elastic piece is arranged in the first sealing piece, the sealing effect of the sealing seat and the ball body can be improved in the medium flushing and lifting process, the elastic piece is absent from the second sealing part, the sealing effect of the sealing seat and the ball body is always kept in the medium flushing process, the technological requirement on one side of the valve seat is reduced, and the production efficiency is improved.
The first nickel-based hard alloy layer is sprayed on the spherical surface of the sphere, the second nickel-based hard alloy layer is sprayed on the sealing surface of the valve seat, so that the wear resistance and corrosion resistance between the sphere and the valve seat are improved, and the nickel-based hard alloy layers with different thicknesses can be sprayed according to specific requirements, so that an ideal effect is achieved.
Drawings
FIG. 1 is a schematic view of a first embodiment of a hard seal shut-off ball valve;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is an enlarged schematic view of FIG. 1 at B;
FIG. 4 is a schematic view of a second embodiment of a first seal;
fig. 5 is a schematic view of the structure of a third embodiment of the first seal.
Reference numeral 1, a first valve body; 11, first connecting end, 2, second valve body, 21, second connecting end, 22, graphite gasket, 23, filling cavity, 24, graphite filler, 25, pressing plate, 3, mounting cavity, 4, channel, 5, sphere, 51, first nickel-based hard alloy layer, 52, second nickel-based hard alloy layer, 6, valve seat, 61, sealing surface, 62, mounting groove, 7, first sealing element, 71, elastic element, 711, disc spring, 712, cylindrical spring, 72, spring seat, 73, first graphite ring, 8, second sealing element, 81, second graphite ring, 9, valve rod, 91, connector, 92, connecting rod, 93, extension, 94, mounting hole, 95, thrust pad.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 5, in order to achieve the above object, the present utility model provides a hard seal cut-off ball valve, comprising a first valve body 1 and a second valve body 2, wherein the first valve body 1 and the second valve body 2 are surrounded to form an installation cavity 3, channels 4 for medium circulation are provided on the first valve body 1 and the second valve body 2, medium flows along the first valve body 1 to the second valve body 2, and a ball 5 is installed in the installation cavity 3;
Valve seats 6 are arranged between the ball 5 and the first valve body 1 and between the ball and the second valve body 2;
A first sealing piece 7 is arranged between the valve seat 6 and the first valve body 1, and a second sealing piece 8 is arranged between the valve seat 6 and the second valve body 2;
The first valve body 1 or the second valve body 2 is provided with an auxiliary member for moving the ball 5 to the second seal 8;
The ball 5 is provided with a first nickel-based cemented carbide layer 51, the valve seat 6 comprises a sealing surface 61, and the sealing surface 61 is provided with a second nickel-based cemented carbide layer 52.
According to the design of the utility model, the first valve body 1 and the second valve body 2 are surrounded to form the installation cavity 3 for installing the ball body 5, and a medium flows out from the inlet end of the first valve body 1 through the ball body 5 and finally flows out from the outlet end of the second valve body 2, so that the hard seal cutoff ball valve is of a unilateral flow direction design.
The first sealing element 7 is arranged at the inlet end of the fluid, the elastic element 71 is arranged in the first sealing element 7, the sealing effect of the sealing seat and the ball body 5 can be improved in the medium flushing and lifting process, the elastic element 71 is absent from the second sealing part, the sealing effect of the sealing seat and the ball body is always kept in the medium flushing process, the technological requirement on one side of the valve seat 6 is reduced, and the production efficiency is improved.
The first nickel-based hard alloy layer 51 is sprayed on the spherical surface of the ball 5, the second nickel-based hard alloy layer 52 is sprayed on the sealing surface 61 of the valve seat 6, so that the wear resistance and corrosion resistance between the ball 5 and the valve seat 6 are improved, and nickel-based hard alloy layers with different thicknesses can be sprayed according to specific requirements, so that an ideal effect is achieved.
Due to the technical problem, a slight deviation exists between the valve body and the valve rod 9, and the valve body is slightly biased against the direction of the second sealing element 8 with the ball 5 by virtue of the design of the auxiliary component, and the first sealing element always keeps high sealing with the ball under the action of the elastic element, so that the sealing effect is improved.
The first sealing member 7 comprises an elastic member 71, a spring seat 72, and a first graphite ring 73, wherein the elastic member 71 and the first graphite ring 73 are respectively disposed on two sides of the spring seat 72, and the first graphite ring 73 is respectively abutted against the first valve body 1, the valve seat 6, and the spring seat 72.
The elastic member 71 includes a disc spring 711 and/or a cylindrical spring 712.
In the first embodiment, as shown in fig. 1, only the disc spring 711 is provided;
in the second embodiment, as shown in fig. four, only the cylindrical spring 712 is provided;
the third embodiment has a disc spring 711 and a cylindrical spring 712 as shown in fig. five.
A stable sealing force is provided by the elastic member 71, and a corresponding embodiment of the elastic member 71 is selected according to the size of the valve and the use situation.
The second sealing member 8 comprises a second graphite ring 81, and the second graphite ring 81 is respectively abutted against the valve seat 6 and the second valve body 2.
The service life of the equipment is prolonged by utilizing the high temperature resistance and corrosion resistance of the graphite ring.
The valve seat 6 is provided with mounting grooves 62 for mounting the first graphite ring 73 or the second graphite ring 81, and the mounting grooves 62 are arranged in a trapezoid structure. The design of this structure can make things convenient for graphite ring and through the extrusion, forms effectual seal.
The upper side and the lower side of the first valve body 1 are respectively provided with a first connecting end 11, the upper side and the lower side of the second valve body 2 are respectively provided with a second connecting end 21, and the first connecting ends 11 and the second connecting ends 21 are connected through bolts;
A graphite gasket 22 is arranged between the first connection end 11 and the second connection end 21.
With the design of the graphite gasket 22, the wear resistance and the sealability of the first and second connection ends 11 and 21 can be improved.
The valve rod 9 is also included, and the valve rod 9 passes through the second valve body 2 to be connected with the ball 5.
The valve rod 9 is including connector 91 and connecting rod 92, and connecting rod 92 is connected in the upper end of connector 91, and the both sides of connector 91 are provided with extension 93, and extension 93, connecting rod 92, second valve body 2 surround and form mounting hole 94, install thrust pad 95 in the mounting hole 94. The thrust pad 95 is designed to enhance sealing performance, avoid leakage, and sufficiently abut against the joint 91, the connecting rod 92, and the second valve body 2.
A filling cavity 23 is arranged between the second valve body 2 and the connecting rod 92, and graphite filler 24 is filled in the filling cavity 23.
The filling cavity 23 is designed into a low-leakage V-shaped graphite packing 24 group, so that the sealing performance is better and the high-temperature resistance is realized. The design can be suitable for various pneumatic and electric cutting-off working conditions, and the torque is light and balanced.
The auxiliary component comprises a pressing plate 25 positioned above the filling cavity 23, the pressing plate 25 is sleeved above the valve rod 9, a first connecting part is arranged on one side of the pressing plate 25, a second connecting part is arranged on the second valve body 2, and the first connecting part and the second connecting part are connected and arranged through bolts;
The first connecting portion and the second connecting portion are both disposed on a side of the valve rod 9 away from the first sealing member 7, and when the first connecting portion is connected with the second connecting portion, the valve rod 9 receives thrust in the direction of the first sealing member 7.
In the design of the structure, as shown in fig. 1, when the bolts are connected to the first connecting part and the second connecting part, the pressing plate 25 presses down the graphite packing 24 by being continuously screwed, so that the sealing performance of the graphite packing 24 is improved;
and in the screwing process, an abutting force can be generated on the right side of the valve rod 9, when a gap exists between the valve rod 9 and the valve body due to the technical problem, the upper end of the valve rod 9 moves leftwards under the action of the abutting force, at the moment, the middle part of the valve rod 9 is abutted with the valve body, the lower ball 5 approaches to the direction of the second sealing piece 8, and at the moment, the first sealing piece 7 still keeps high close contact with the ball 5 due to the action of the elastic piece 71, so that the sealing efficiency is ensured.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (10)
1. The hard seal cutoff ball valve is characterized by comprising a first valve body (1) and a second valve body (2), wherein a mounting cavity (3) is formed by surrounding the first valve body (1) and the second valve body (2), channels (4) for medium circulation are formed in the first valve body (1) and the second valve body (2), the medium flows to the second valve body (2) along the first valve body (1), and a ball body (5) is arranged in the mounting cavity (3);
Valve seats (6) are arranged between the ball body (5) and the first valve body (1) and between the ball body and the second valve body (2);
A first sealing piece (7) is arranged between the valve seat (6) and the first valve body (1), and a second sealing piece (8) is arranged between the valve seat (6) and the second valve body (2);
An auxiliary component for moving the ball body (5) to the second sealing element (8) is arranged on the first valve body (1) or the second valve body (2);
the ball body (5) is provided with a first nickel-based hard alloy layer (51), the valve seat (6) comprises a sealing surface (61), and the sealing surface (61) is provided with a second nickel-based hard alloy layer (52).
2. The hard seal cutoff ball valve according to claim 1, wherein the first seal member (7) comprises an elastic member (71), a spring seat (72) and a first graphite ring (73), the elastic member (71) and the first graphite ring (73) are respectively arranged on two sides of the spring seat (72), and the first graphite ring (73) is respectively in butt joint with the first valve body (1), the valve seat (6) and the spring seat (72).
3. A hard seal shut off ball valve according to claim 2, wherein said resilient member (71) comprises a disc spring (711) or/and a cylindrical spring (712).
4. A hard seal cut-off ball valve according to claim 2, wherein the second sealing member (8) comprises a second graphite ring (81), and the second graphite ring (81) is respectively abutted with the valve seat (6) and the second valve body (2).
5. A hard seal cutoff ball valve as claimed in claim 4 wherein the valve seats (6) are each provided with a mounting groove (62) for mounting the first graphite ring (73) or the second graphite ring (81), the mounting grooves (62) being arranged in a trapezoidal configuration.
6. The hard seal cutoff ball valve according to any one of claims 1 to 5, wherein the upper and lower sides of the first valve body (1) are provided with first connecting ends (11), the upper and lower sides of the second valve body (2) are provided with second connecting ends (21), and the first connecting ends (11) and the second connecting ends (21) are connected through bolts;
A graphite gasket (22) is arranged between the first connecting end (11) and the second connecting end (21).
7. A hard seal shut-off ball valve according to any one of claims 1 to 5, further comprising a valve stem (9), said valve stem (9) being arranged in connection with the ball (5) through the second valve body (2).
8. The hard seal cutoff ball valve according to claim 7, wherein the valve rod (9) comprises a connector (91) and a connecting rod (92), the connecting rod (92) is connected to the upper end of the connector (91), extension portions (93) are arranged on two sides of the connector (91), the extension portions (93), the connecting rod (92) and the second valve body (2) are surrounded to form a mounting hole (94), and a thrust pad (95) is mounted in the mounting hole (94).
9. The hard seal cutoff ball valve according to claim 8, wherein a filling cavity (23) is arranged between the second valve body (2) and the connecting rod (92), and graphite filler (24) is filled in the filling cavity (23).
10. The hard seal cutoff ball valve according to claim 9, wherein the auxiliary component comprises a pressing plate (25) positioned above the filling cavity (23), the pressing plate (25) is sleeved above the valve rod (9), a first connecting part is arranged on one side of the pressing plate (25), a second connecting part is arranged on the second valve body (2), and the first connecting part and the second connecting part are connected and arranged through bolts;
The first connecting portion and the second connecting portion are both arranged on one side, far away from the first sealing piece (7), of the valve rod (9), and when the first connecting portion is connected with the second connecting portion, the valve rod (9) receives thrust in the direction of the first sealing piece (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421060347.0U CN222416114U (en) | 2024-05-15 | 2024-05-15 | Hard seal cutting ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421060347.0U CN222416114U (en) | 2024-05-15 | 2024-05-15 | Hard seal cutting ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222416114U true CN222416114U (en) | 2025-01-28 |
Family
ID=94360528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421060347.0U Active CN222416114U (en) | 2024-05-15 | 2024-05-15 | Hard seal cutting ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222416114U (en) |
-
2024
- 2024-05-15 CN CN202421060347.0U patent/CN222416114U/en active Active
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