CN216407799U - Ball core self-adaptation compensating mechanism - Google Patents
Ball core self-adaptation compensating mechanism Download PDFInfo
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- CN216407799U CN216407799U CN202122164879.1U CN202122164879U CN216407799U CN 216407799 U CN216407799 U CN 216407799U CN 202122164879 U CN202122164879 U CN 202122164879U CN 216407799 U CN216407799 U CN 216407799U
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Abstract
The utility model discloses a ball core self-adaptive compensation mechanism which comprises a loading assembly arranged in a valve, wherein the loading assembly is supported at the bottom of a ball core and has a vertical upward loading force on the ball core; according to the utility model, when the valve is in a low-temperature environment, the vertical movement of the ball core caused by the cold shrinkage of the ball core is compensated by the loading force of the loading assembly, the vertical compensation positioning effect is exerted on the ball core, the high stability of the center of the ball core when the valve is in a normal-temperature environment to a low-temperature environment is ensured, the phenomena of valve seat leakage and opening and closing moment increase caused by center height offset are avoided, the sealing performance and reliability of the valve of the ball valve under the low-temperature condition are improved, and the sealing stability of the valve seat and the stability of the opening and closing moment of the valve are improved; meanwhile, the structure can also reduce the assembly difficulty of the valve, shorten the assembly time and improve the assembly efficiency.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a ball core self-adaptive compensation mechanism.
Background
For a low-temperature ball valve, a valve core of the low-temperature ball valve is a ball core and needs to be accurately positioned with a valve body, the traditional positioning mode is to measure the central height of the ball core, compare the central height with the central height of a valve body flow passage, and ensure the central height of the ball core by processing gaskets with different heights. The center position of the ball core, the valve seat and the center of the flow passage are always on the same horizontal plane through multiple adjustments;
need carry out the repeated work of a lot of assembly, dismantlement and measurement in this assembling process, whole assembling process is comparatively loaded down with trivial details, and this assembly debugging process is gone on under normal atmospheric temperature environment moreover, and when the valve worked under the low temperature condition, the ball core is received cold shrink and ball core dead weight and makes central position take place vertical skew, makes ball core center height and the high relative skew of valve seat center high yield, causes ball core sphere and the sealed face of valve seat can not laminate completely, influences the sealing performance of valve.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a ball core adaptive compensation mechanism, which can realize the automatic compensation of the ball core shrinkage due to cooling and the center height of the ball core due to its own weight under low temperature condition, so as to keep the center height of the ball core unchanged; the sealing performance and the reliability of the valve of the ball valve under the low-temperature condition are improved.
The utility model provides a ball core self-adaptive compensation mechanism which comprises a loading assembly arranged in a valve, wherein the loading assembly has a vertically upward loading force on a ball core.
Further, the loading assembly comprises an elastic piece and a loading shaft, the loading shaft is vertically and coaxially arranged with the ball core, and the elastic piece has an axially upward elastic loading force on the loading shaft, so that the loading shaft has a vertically upward loading force on the ball core.
Further, the loading assembly further comprises a supporting ball, and the upper end of the loading shaft is supported at the bottom of the ball core through the supporting ball.
Furthermore, the loading assembly further comprises an adjusting piece, the elastic piece is arranged between the adjusting piece and the loading shaft in the vertical direction, and the adjusting piece is arranged on the valve in a vertically adjustable mode so as to adjust the tensile or compressive elastic loading force of the elastic piece.
Furthermore, the bottom of the ball core is vertically and coaxially provided with a supporting blind hole, and the upper end of the loading shaft extends into the supporting blind hole and is supported at the bottom of the supporting blind hole.
Furthermore, a semi-spherical groove is formed in the center of the upper end of the loading shaft, and the supporting ball is arranged in the semi-spherical groove.
Furthermore, the bottom of the ball core is vertically and coaxially provided with a conical groove, and the supporting ball is supported on the inner wall of the conical groove.
Furthermore, the loading assembly also comprises a gasket, the elastic part is a disc spring, the elastic part is positioned between the gasket and the lower end of the loading shaft, and the adjusting part is supported at the bottom of the gasket and has upward loading force on the gasket, so that the gasket compresses the elastic part upwards.
Further, a mounting through hole is formed in the bottom of the valve, the adjusting piece is arranged in the mounting through hole in a vertically adjustable mode, and a bottom plug is arranged at the bottom of the mounting through hole in a sealing mode.
Furthermore, the upper end of the loading shaft is in running fit with the support blind hole through a bushing.
The utility model has the beneficial effects that:
according to the utility model, when the valve is in a low-temperature environment, the loading force of the loading assembly compensates the vertical downward movement of the ball core caused by the cold shrinkage of the ball core, the vertical compensation positioning effect is realized on the ball core, the high stability of the center of the ball core when the valve is in a normal-temperature environment to a low-temperature environment is ensured, the phenomena of valve seat leakage and opening and closing moment increase caused by high center offset are avoided, the sealing property and reliability of the valve of the ball valve under the low-temperature condition are improved, and the sealing stability of the valve seat and the stability of the opening and closing moment of the valve are improved;
according to the utility model, the ball valve adopts a structural design that the ball core automatically compensates and the center height can be adjusted, so that the positioning precision of the ball core can be improved, and the sealing performance of the valve can be ensured; meanwhile, the structure can also reduce the assembly difficulty of the valve, shorten the assembly time and improve the assembly efficiency.
Drawings
The utility model is further described below with reference to the figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged schematic view;
Detailed Description
The present embodiment provides a ball core adaptive compensation mechanism, which includes a loading assembly installed in the valve, wherein the loading assembly has a vertically upward loading force on the ball core 10.
The loading assembly may be disposed on the valve body, the valve cover, or the valve seat, and is described by taking the case of being disposed on the valve body, the loading assembly may be disposed on the valve body and located above the ball core, and the loading force of the loading assembly on the ball core is a vertically upward pulling force at this time, or the loading assembly may be disposed on the valve body and located below the ball core, and the loading force of the loading assembly on the ball core is a vertically upward pushing force at this time, and when the loading assembly is disposed on the valve cover or the valve seat, the loading assembly may also be disposed above or below the ball core, or both the loading assemblies are disposed above and below the ball core, which is not described herein again;
as shown in fig. 1, the entire loading assembly is mounted on the valve body and located right below the ball core, and has a vertically upward loading force on the ball core, and in a low-temperature environment, the loading force compensates the vertical movement of the ball core caused by the cold shrinkage of the ball core, so as to perform a vertical compensation positioning function on the ball core, ensure the high stability of the center of the ball core when the valve is in a normal-temperature environment to a low-temperature environment, avoid the phenomena of valve seat leakage and increased opening and closing moment due to high center offset, improve the sealing performance and reliability of the valve of the ball valve under the low-temperature condition, and improve the sealing stability of the valve seat and the stability of the valve opening and closing moment;
in the embodiment, the ball valve adopts a structural design that the ball core automatically compensates and can adjust the center height, so that the positioning precision of the ball core can be improved, and the sealing performance of the valve can be ensured; meanwhile, the structure can also reduce the assembly difficulty of the valve, shorten the assembly time and improve the assembly efficiency.
In this embodiment, the loading assembly includes an elastic member 1 and a loading shaft 2, the loading shaft is disposed coaxially with the vertical direction of the ball core, and the elastic member has an elastic loading force in the axial direction upward on the loading shaft, so that the loading shaft has a loading force in the vertical direction upward on the ball core.
When the loading shaft is positioned above the ball core, the elastic piece has upward elastic tension on the loading shaft, the loading shaft is connected to the upper end of the ball core and has upward tension on the ball core, at the moment, because a valve rod is also arranged above the ball core, the bottom of the valve rod is designed to be a hollow structure, the loading shaft and the elastic piece are sleeved in the valve rod, the loading shaft and the ball valve are rotationally matched with each other with single degree of freedom, and at the moment, the valve rod and the ball core keep a certain vertical sliding stroke, so that the ball core can vertically slide along the valve rod to adjust the center height; when the loading shaft is positioned below the ball core, the elastic piece has upward elastic compression force on the loading shaft, the loading shaft is supported at the lower end of the ball core and has upward supporting force on the ball core, and the loading shaft and the elastic piece are arranged on the valve body;
referring to fig. 1, the elastic member is disposed below the loading shaft, and the elastic member is located between the loading shaft and the bottom of the valve seat, and the elastic member is in a compressed state and has an axially upward elastic loading force on the loading shaft; the elastic member may be an elastic sleeve, a spring or other known elastic structure, and can adapt to the slight change of the axial clearance between the loading shaft and the valve seat due to the elastic loading force exerted by the elastic member, so that the sudden change of the loading force is prevented, and the loading force is kept approximately constant to provide stable loading force for the ball core.
In this embodiment, the loading assembly further includes a support ball 3, and the upper end of the loading shaft is supported at the bottom of the ball core through the support ball 3.
The support ball can adopt the spheroid that steel ball or other hard materials made, and the support ball sets up between loading epaxial end and ball core, can reduce the contact surface between loading axle and the ball core through the support ball, and then reduces the relative pivoted switch friction torque between loading axle and the ball core, finally reduces the switch torque of valve, has further guaranteed the stability of valve switch torque.
In this embodiment, the loading assembly further includes an adjusting member 4, the elastic member is disposed between the adjusting member and the loading shaft in the vertical direction, and the adjusting member is disposed on the valve in a vertically adjustable manner to adjust the elastic loading force of the elastic member in tension or compression.
When loading axle and elastic component set up on the ball valve, then the tensile elastic loading power of elastic component is adjusted to the regulating part, when loading axle and elastic component set up under the ball valve, then the compression elastic loading power of elastic component is adjusted to the regulating part, and the regulating part can be for known structures such as hydraulic drive structure, screw drive structure realize that the loading axle is vertical adjustable, through the regulation to regulating part axial position, adjusts the compression state of elastic component, and then adjusts the size of elastic loading power.
In this embodiment, the bottom of the ball core is vertically and coaxially provided with a supporting blind hole, and the upper end of the loading shaft 2 extends into the supporting blind hole and is supported at the bottom of the supporting blind hole.
Through the cooperation of supporting blind hole and loading axle, improve the assembly precision of the two, do benefit to and keep the coaxial cooperation of the two, and then guarantee that the loading force is located the vertical axis position of ball core to make whole even vertical the shifting up of ball core, when guaranteeing ball core central height, also prevent the deflection phenomenon that the ball core received the loading force to lead to, the loading axle plays the transverse orientation effect to the ball core simultaneously.
In this embodiment, a hemispherical groove 5 is formed in the center of the upper end of the loading shaft, and the support ball is disposed in the hemispherical groove 5.
Combine fig. 2 to show, the central point of hemisphere groove is located the straight line at the vertical axis place of core, through the setting of hemisphere groove, does benefit to the locking and supports the ball, makes simultaneously to support the ball and has automatic aligning function, and then guarantees that the support ball is located the vertical axis of core to the strong point of core.
In this embodiment, the bottom of the ball core is vertically and coaxially provided with a tapered groove 6, and the support ball is supported on the inner wall of the tapered groove 6.
As shown in fig. 2, the tapered groove is a downward-opening structure, the support ball is supported on the inner wall of the tapered groove 6 to form a line contact structure, the support ball and the hemispherical groove form a point contact, and through a point contact and line contact manner, the friction force between the loading shaft and the ball core is reduced, and meanwhile, the stability of the support ball is ensured, so that the support ball is accurately supported at the bottom of the loading shaft.
In this embodiment, the loading assembly further includes a gasket 7, the elastic member is a disc spring, a mounting groove is formed in the bottom of the inner cavity of the valve body, the mounting groove is vertically and coaxially arranged with the ball core, the lower end of the loading shaft extends into the mounting groove, the elastic member and the gasket are arranged in the mounting groove, the elastic member is located between the gasket and the lower end of the loading shaft, and the adjusting member 4 is supported at the bottom of the gasket and has an upward loading force on the gasket, so that the gasket compresses the elastic member upward.
Referring to fig. 1, the mounting groove is a cylindrical groove, the pad is a circular piece, and the pad is disposed in cooperation with the disc spring, so that the loading force of the adjusting member is uniformly applied to the large circular end of the disc spring.
In this embodiment, a mounting through hole is opened at the bottom of the valve body, the adjusting piece 4 is arranged in the mounting through hole in a vertically adjustable manner, and a bottom plug 8 is arranged at the bottom of the mounting through hole in a sealing manner.
The installation through-hole sets up with the loading axle is coaxial, and the installation through-hole is the screw hole in this embodiment, and the regulating part is adjusting screw, and adjusting screw sinks in the installation through-hole to it is sealed with the installation through-hole through end stopper 8, and end stopper 8 adopts threaded connection's mode to seal in the installation through-hole equally, in order to prevent that the medium in the valve body from leaking outward.
In this embodiment, the upper end of the loading shaft 2 is rotatably matched with the supporting blind hole through a bushing 9.
The bush can be made for the copper sheathing or by self-lubricating material, and the bush can with loading epaxial end interference fit, at this moment the bush with support rotating fit between the blind hole, perhaps the bush can with support blind hole interference fit, at this moment between bush and the loading axle rotating fit, can reduce the friction between loading axle and the support blind hole through the setting of bush, the maintenance in the later stage of also being convenient for simultaneously.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (9)
1. The utility model provides a ball core self-adaptation compensation mechanism which characterized in that: the loading assembly is arranged in the valve and has a vertically upward loading force on the ball core;
the loading assembly comprises an elastic piece and a loading shaft, the loading shaft and the ball core are vertically and coaxially arranged, and the elastic piece has an axially upward elastic loading force on the loading shaft, so that the loading shaft has a vertically upward loading force on the ball core.
2. The adaptive ball core compensation mechanism of claim 1, wherein: the loading assembly further comprises a supporting ball, and the upper end of the loading shaft is supported at the bottom of the ball core through the supporting ball.
3. The adaptive ball core compensation mechanism of claim 1, wherein: the loading assembly further comprises an adjusting piece, the elastic piece is arranged between the adjusting piece and the loading shaft in the vertical direction, and the adjusting piece is arranged on the valve in a vertically adjustable mode so as to adjust the tensile or compressive elastic loading force of the elastic piece.
4. The adaptive ball core compensation mechanism of claim 1, wherein: the ball core bottom vertical coaxial has seted up and has supported the blind hole, loading epaxial end extends to and supports in supporting the blind hole in and supporting the blind hole bottom.
5. The adaptive ball core compensation mechanism of claim 2, wherein: a semi-spherical groove is formed in the center of the upper end of the loading shaft, and the supporting ball is arranged in the semi-spherical groove.
6. The adaptive ball core compensation mechanism of claim 5, wherein: the bottom of the ball core is vertically and coaxially provided with a conical groove, and the supporting ball is supported on the inner wall of the conical groove.
7. The adaptive ball core compensation mechanism of claim 3, wherein: the loading assembly further comprises a gasket, the elastic piece is a disc spring, the elastic piece is located between the gasket and the lower end of the loading shaft, and the adjusting piece is supported at the bottom of the gasket and has an upward loading force on the gasket, so that the gasket compresses the elastic piece upwards.
8. The adaptive ball core compensation mechanism of claim 3, wherein: the valve is characterized in that a mounting through hole is formed in the bottom of the valve, the adjusting piece is arranged in the mounting through hole in a vertically adjustable mode, and a bottom plug is arranged at the bottom of the mounting through hole in a sealing mode.
9. The adaptive ball core compensation mechanism of claim 4, wherein: and the upper end of the loading shaft is in running fit with the support blind hole through a bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164879.1U CN216407799U (en) | 2021-09-08 | 2021-09-08 | Ball core self-adaptation compensating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122164879.1U CN216407799U (en) | 2021-09-08 | 2021-09-08 | Ball core self-adaptation compensating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216407799U true CN216407799U (en) | 2022-04-29 |
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ID=81293330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122164879.1U Active CN216407799U (en) | 2021-09-08 | 2021-09-08 | Ball core self-adaptation compensating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216407799U (en) |
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2021
- 2021-09-08 CN CN202122164879.1U patent/CN216407799U/en active Active
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