CN209839208U - Energy storage type low friction sealing ball valve - Google Patents
Energy storage type low friction sealing ball valve Download PDFInfo
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- CN209839208U CN209839208U CN201920207037.XU CN201920207037U CN209839208U CN 209839208 U CN209839208 U CN 209839208U CN 201920207037 U CN201920207037 U CN 201920207037U CN 209839208 U CN209839208 U CN 209839208U
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Abstract
An energy storage type low-friction sealed ball valve is characterized in that a valve seat is movably arranged in a valve body on one side of a liquid inlet, the valve seat is in a closed strip shape connected end to end, a sealing surface of the valve seat is a spherical surface matched with a valve core, the surface of the valve seat opposite to the liquid outlet abuts against an annular table in the valve body, and when the valve seat abuts against the annular table to be incapable of moving, the valve seat abuts against the valve core and is in a sealing state; a circle of groove is formed in the valve body cavity, the central axis of the groove is overlapped with the central axis of the valve seat, the groove is positioned on the valve body cavity on one side, opposite to the liquid inlet, of the valve seat, a clamping ring is fixedly embedded in the groove, and a pre-tightened wave spring is arranged between the clamping ring and the valve seat; the wave spring is a wave spring with at least one end provided with a flat ring, and the diameter of the inner circle of the flat ring/gasket is smaller than that of the inner circle of the clamping ring. The utility model discloses the leakproofness is good, the moment of torsion is little and basically not change along with medium pressure, has created the condition to the miniaturization and the reduce cost that realize the executor to the wearing and tearing self-compensating function of sealed face has prolonged the life of valve.
Description
The technical field is as follows:
the utility model relates to the technical field of valves, in particular to energy storage formula low friction seals ball valve.
Background art:
along with the improvement of intellectualization and automation degree of a building automatic control water system, a large number of intelligent regulating valves are needed, the annual consumption is at least more than tens of millions, a straight stroke regulating valve is mainly adopted in the past tradition, and in recent years, a ball valve is gradually used for replacing the straight stroke regulating valve in the market due to cost reasons;
at present, the automatic control valves of buildings, particularly 50% -60% of heating ventilation air-conditioning valve markets select a plurality of foreign large-scale valves, and the products of the automatic control valves, particularly the heating ventilation air-conditioning valves, use conventional manual ball valves and valve plates to replace straight stroke adjusting valves, and although equal percentage flow characteristic adjustment is achieved, the products still have the problem of large torque.
The invention content is as follows:
aiming at the problems, an energy storage type low-friction sealing ball valve is needed to be designed, so that the operating torque is effectively reduced while the good sealing performance is ensured, and the matching cost of the ball valve is reduced.
An energy storing low friction sealing ball valve comprising: the valve comprises a valve cover, a valve body, a valve rod, a valve core, a valve seat, a retainer ring and a wave spring; the valve seat is in a closed strip shape in end-to-end connection, the sealing surface of the valve seat is a spherical surface matched with the valve core, the surface of the valve seat opposite to the liquid outlet abuts against an annular table in the valve body, the annular table is relatively fixed with the valve body, and when the valve seat abuts against the annular table to be incapable of displacement, the valve seat abuts against the valve core to be in a sealing state; a circle of groove is formed in the valve body cavity, the central axis of the groove is overlapped with the central axis of the valve seat, the groove is positioned on the valve body cavity on one side, opposite to the liquid inlet, of the valve seat, a clamping ring is fixedly embedded in the groove, and a pre-tightened wave spring is arranged between the clamping ring and the valve seat; the wave spring is a wave spring with a flat ring at least at one end, and can also be a combination of the wave spring without the flat ring and a gasket (in the combination, the gasket replaces the flat ring), and the diameter of the inner circle of the flat ring/the gasket is smaller than that of the inner circle of the clamping ring.
Preferably, the valve seat is annular.
Preferably, the annular table and the valve body are of an integrally formed structure.
Preferably, the sealing surface of the valve seat and the valve core can still keep sealed when the sealing surface is abraded by 0.5mm by the pretightening force of the wave spring.
The utility model discloses the leakproofness is good, the moment of torsion is little and basically not change along with medium pressure, has created the condition to the miniaturization and the reduce cost that realize the executor to the wearing and tearing self-compensating function of sealed face has prolonged the life of valve.
Description of the drawings:
FIG. 1 is a schematic cross-sectional view of a preferred embodiment of a stored energy low friction ball valve.
FIG. 2 is a schematic partial sectional view of the wave spring and the valve seat under stress, deformation and displacement.
FIG. 3 is a schematic partial sectional view of the wave spring and the valve seat under stress, deformation and displacement.
FIG. 4 is a schematic partial sectional view of the wave spring and the valve seat under stress, deformation and displacement.
In the figure: the valve comprises a valve cover 1, a valve body 2, a valve rod 3, a valve core 4, a valve seat 5, a clamping ring 6, a wave spring 7, an annular table 21 and a flat ring/gasket 71.
The specific implementation mode is as follows:
as shown in fig. 1, an energy storage type low friction sealing ball valve includes: the valve comprises a valve cover 1, a valve body 2, a valve rod 3, a valve core 4, a valve seat 5, a clamping ring 6 and a wave spring 7; wherein, the valve bonnet 1 is connected to the valve block 2 through the bolt seal, the valve core 4 is set up in the valve block 2, the valve stem 3 crosses the valve bonnet 1 to connect with valve core 4 and make the valve core 4 rotate around the axis of valve stem 3, there are valve bases 5 in the valve block 2 of one side of liquid inlet movably, the valve base 5 is the closed strip (more typical is cyclic) that is connected end to end, the sealing surface of the valve base 5 is the sphere matched with valve core 4, the surface of the valve base 5 opposite to liquid outlet supports with the annular platform 21 in the valve block 2, the annular platform 21 is relatively fixed with valve block 2, and the valve base 5 supports with the valve core 4 and is in the sealed condition when the valve base 5 supports with the annular platform 21 and is not displaceable; a circle of groove is formed in the valve body cavity, the central axis of the groove is overlapped with the central axis of the valve seat 5, the groove is positioned on the valve body cavity on one side, opposite to the liquid inlet, of the valve seat 5, a clamping ring 6 is fixedly embedded in the groove, and a pre-tightened wave spring 7 is arranged between the clamping ring 6 and the valve seat 5; the wave spring 7 is a wave spring with a flat ring 71 at least at one end, or a combination of the wave spring without a flat ring and a washer 71 (in the combination, the washer replaces the flat ring), and the diameter of the inner circle of the flat ring/washer 71 is smaller than that of the inner circle of the collar 6, generally: the diameter of the inner circle of the clamping ring 6, namely the diameter of the inner circle of the flat ring/gasket 71 is more than or equal to 1 cm.
As shown in fig. 2, the valve seat 5 is fixed by using a wave spring 7 energy storage collar 6 limiting structure, when the valve is in a sealed state, the pressure of a medium in a liquid inlet is P1, and the pressure of a liquid outlet is P2, the pressure of the medium received by the flat ring/gasket 71 is P1-P2, at this time, when the pressure of the medium is increased to P +. DELTA.p, the medium pushes the flat ring/gasket 71 to compress the wave spring 7, the working height of the wave spring 7 is compressed from original H to H-. DELTA.h, the increased pressure is stored, the specific sealing pressure of the valve seat 5 and the valve core 4 is not increased, and the torque is not increased, as shown in fig. 3; when the medium pressure is reduced, the pressure stored by the wave spring 7 is released, the working height of the wave spring 7 is restored to H again, the specific sealing pressure of the valve seat 5 and the valve core 4 is not increased, and the torque is not increased.
As shown in fig. 4, after the valve seat 5 is used for a period of time, the valve seat is worn by δ, the sealing force is reduced, the wave spring 7 releases the original stored energy (pretightening force), the working height is extended from the original H to H + δ, the valve seat 5 is pushed to δ toward the valve core 4, the sealing force lost between the valve seat 5 and the valve core 4 is compensated, and therefore the service life of the valve is prolonged.
In the present embodiment, the valve seat 5 is annular. In other embodiments, the valve seat 5 may be a regular polygon on the outer side and a circle on the inner side like a nut; even the outer side may be of other shapes.
In the present embodiment, the annular table 21 and the valve body 2 are formed integrally. In other embodiments, the annular table 21 may be fixed to the valve body 2 by welding or by snap-fitting.
In the present embodiment, the pretightening force of the wave spring 7 can still keep the sealing between the valve seat 5 and the valve element 4 when the sealing surfaces of the valve seat 5 and the valve element 4 are worn away by 0.5 mm.
Claims (4)
1. An energy storage type low-friction sealing ball valve is characterized by comprising: the valve comprises a valve cover, a valve body, a valve rod, a valve core, a valve seat, a retainer ring and a wave spring; the valve seat is in a closed strip shape in end-to-end connection, the sealing surface of the valve seat is a spherical surface matched with the valve core, the surface of the valve seat opposite to the liquid outlet abuts against an annular table in the valve body, the annular table is relatively fixed with the valve body, and when the valve seat abuts against the annular table to be incapable of displacement, the valve seat abuts against the valve core to be in a sealing state; a circle of groove is formed in the valve body cavity, the central axis of the groove is overlapped with the central axis of the valve seat, the groove is positioned on the valve body cavity on one side, opposite to the liquid inlet, of the valve seat, a clamping ring is fixedly embedded in the groove, and a pre-tightened wave spring is arranged between the clamping ring and the valve seat; the wave spring is a wave spring with at least one end provided with a flat ring, or a combination of the wave spring without the flat ring and a gasket, and the diameter of the inner circle of the flat ring/the gasket is smaller than that of the inner circle of the clamping ring.
2. An energy storing low friction sealed ball valve according to claim 1 wherein the valve seat is annular.
3. An energy storing low friction sealed ball valve as claimed in claim 1 wherein the annular land is of integral construction with the valve body.
4. The energy-storing low-friction sealed ball valve as claimed in claim 1, wherein the pre-tightening force of the wave spring causes the sealing surface of the valve seat and the valve core to wear away by 0.5mm, and the sealing between the valve seat and the valve core is still maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207037.XU CN209839208U (en) | 2019-02-19 | 2019-02-19 | Energy storage type low friction sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920207037.XU CN209839208U (en) | 2019-02-19 | 2019-02-19 | Energy storage type low friction sealing ball valve |
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| Publication Number | Publication Date |
|---|---|
| CN209839208U true CN209839208U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920207037.XU Active CN209839208U (en) | 2019-02-19 | 2019-02-19 | Energy storage type low friction sealing ball valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
-
2019
- 2019-02-19 CN CN201920207037.XU patent/CN209839208U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595356A (en) * | 2019-02-19 | 2019-04-09 | 宁夏银星吴忠仪表流体控制有限公司 | Energy storage type low-frictional force seal ball-valve |
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