WO2014063620A1 - 一种弹簧调节装置及阀组件 - Google Patents

一种弹簧调节装置及阀组件 Download PDF

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Publication number
WO2014063620A1
WO2014063620A1 PCT/CN2013/085722 CN2013085722W WO2014063620A1 WO 2014063620 A1 WO2014063620 A1 WO 2014063620A1 CN 2013085722 W CN2013085722 W CN 2013085722W WO 2014063620 A1 WO2014063620 A1 WO 2014063620A1
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WO
WIPO (PCT)
Prior art keywords
spring
groove
end portion
valve assembly
adjusting device
Prior art date
Application number
PCT/CN2013/085722
Other languages
English (en)
French (fr)
Inventor
霍羽雄
肖枭
类彦威
Original Assignee
费希尔久安输配设备(成都)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 费希尔久安输配设备(成都)有限公司 filed Critical 费希尔久安输配设备(成都)有限公司
Priority to US14/437,823 priority Critical patent/US10267427B2/en
Publication of WO2014063620A1 publication Critical patent/WO2014063620A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/04—Wound springs
    • F16F1/12—Attachments or mountings
    • F16F1/121—Attachments or mountings adjustable, e.g. to modify spring characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
    • F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
    • F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0636—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane characterised by the loading device of the membrane, e.g. spring

Definitions

  • the present invention relates to a spring adjusting device and a valve assembly including the same. Background technique
  • Spring adjustment devices are typically used for components that use spring adjustment and control parameters, especially for various valve assemblies.
  • the spring adjustment device generally includes an adjustment screw 101, a spring 102, and a spring seat 103 between the adjustment screw and the spring, as shown in FIG.
  • the adjustment screw 101 is required to rotate to adjust the amount of compression of the spring 102 to set and adjust the set point of the controlled parameter.
  • the function of the spring seat 103 is to transmit the force of the adjusting screw 101 to the spring 102, and the conventional contact between the two is such that the end face end portion 104 of the adjusting screw 101 comes into contact with the spring seat 103.
  • the adjusting screw 101 When it is necessary to set and adjust the set point of the controlled parameter, the adjusting screw 101 is rotated, and the end portion 104 at the end thereof is moved vertically downward (or downward) so that the spring seat 103 in contact therewith The compression of the spring 102 is moved vertically downward (or downward) to effect control of opening and closing of the valve assembly port (not shown).
  • the end portion 104 may be disengaged from the recess 105 of the spring seat 103, affecting the use of the spring; and the spring seat 103 may be the end portion 104.
  • the center is twisted around, causing the spring 102 to bend as a whole. This can cause the spring 102 to be extremely unstable during operation, and the valve assembly will drift to the set point of the parameter, affecting the overall performance of the valve assembly.
  • the present invention provides a spring adjusting device including an adjusting screw, a spring, and a spring seat between the adjusting screw and the spring; the spring seat is provided with a groove for receiving a tip end portion of the adjusting screw at one end, The groove has a cylindrical side wall.
  • the end portion of the adjusting screw includes a side wall and a bottom end surface; and the side wall portion of the end portion is in clearance fit with the cylindrical side wall of the gutter.
  • a bearing is disposed between the groove bottom of the groove and the bottom end surface of the end portion.
  • the adjusting screw further includes a trunk portion connected to the end portion, wherein an outer diameter of the trunk portion is larger than an outer diameter of the end portion, and a bearing is disposed between a bottom portion of the trunk portion and a top portion of the spring seat.
  • the bottom of the end portion is in contact with or in point contact with the bottom line of the groove groove.
  • the groove bottom of the above four grooves is tapered or flat.
  • the spring adjusting device embodiment provided by the present invention provides a recess having a cylindrical side wall at the spring seat, so that when the spring force is excessively large, the end portion accommodated in the recess does not easily disengage from the recess. . Further, since the adjusting screw is perpendicular to the spring seat, the spring seat is not twisted around the center of the end portion to prevent the spring from being bent. The above springs will be more stable when working, and the above valve assembly will be prevented from drifting to the set point of the parameter, thereby improving the overall working performance of the valve assembly.
  • the bearing provided between the groove bottom of the groove and the bottom end surface of the end portion greatly reduces the frictional force between the groove bottom and the bottom end surface.
  • the torsional force received by the spring seat is minimized, thereby eliminating the transmission of the torsional force to the spring and enhancing the use effect of the spring.
  • a bearing is provided between the bottom of the trunk portion and the top of the spring seat to achieve the same technical effect.
  • the bottom end surface of the end portion is designed as a spherical surface, and when it is in contact with the bottom point of the groove, the friction between the end portion and the groove is also reduced, which is not easily damaged. Bad zero device.
  • groove bottom is tapered so that the end portion is in contact with the wire, which reduces friction and is easy to process.
  • the invention also provides a valve assembly comprising any of the above described spring adjustment devices.
  • Figure 1 is a valve assembly of the prior art
  • Figure 2 is another valve assembly of the prior art
  • Figure 3 is a partial cross-sectional view showing a valve assembly according to a first embodiment of the present invention
  • Figure 4 is a cross-sectional view of the valve assembly of the first embodiment of the present invention.
  • Figure 5 is a cross-sectional view showing a valve assembly according to a second embodiment of the present invention.
  • Figure 6 is a partial cross-sectional view of a portion of a valve assembly according to a second embodiment of the present invention
  • Figure 7 is a partial cross-sectional view of a valve assembly according to a third embodiment of the present invention.
  • Figure 8 is a partial cross-sectional view showing a valve assembly according to a fourth embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a spring adjustment device and a valve assembly including the same.
  • the spring adjustment device includes an adjustment screw, a spring, and a spring seat between the adjustment screw and the spring.
  • the spring seat is provided with a groove whose side wall is cylindrical; the side wall of the end portion is clearance-fitted with the side wall of the groove, and the end portion of the end portion can be partially or completely accommodated in the groove .
  • the spring force is too large, since the groove has a cylindrical side wall perpendicular to the radial force, the end portion accommodated in the groove does not easily come off the groove.
  • the spring seat is not twisted around the center of the end head to prevent the spring from being bent as a whole.
  • the spring is more stable when working, avoiding drift of the valve assembly to the set point of the parameter, and improving the overall working performance of the valve assembly.
  • a first embodiment of the present invention provides a valve assembly 3.
  • Valve assembly 3 is a first embodiment of the present invention.
  • the valve assembly 3 includes a spring adjustment device that primarily includes an adjustment screw 310, a spring 320, and a spring seat 330 between the adjustment screw 310 and the spring 320.
  • the valve assembly 3 further includes a spring cover 340 and a spring cover 350, the inner chamber of which is configured to receive one end of the adjustment screw 310, the spring 320, and the spring seat 330.
  • a groove 333 having a cylindrical side wall 334 is disposed on the spring seat 330.
  • the spring seat 330 can be designed to include a top portion 331 and a bottom portion 332 extending downwardly from the top portion 331.
  • the top portion 331 is over the spring 320, and the bottom portion 332 having an outer diameter smaller than the top portion 331 is engaged with the inner cavity of the spring 320.
  • the center of the top portion 331 is provided with a tt! J groove 333 having a cylindrical side wall.
  • the groove bottom 335 of the groove 333 can be designed to have the same conical shape as the processing
  • the adjustment screw 310 includes a stem 311 and a tip portion 312.
  • the tip portion 312 is located at the end of the adjustment screw 310.
  • the tip portion 312 has a cylindrical side wall 313 and a spherical bottom end surface 314.
  • the end portion 312 is disposed in the inner cavity and received in the recess 333, and the other end of the adjusting screw 310 is disposed outside the inner cavity.
  • the length of the tip portion 312 depends on the depth of the groove 333 such that the tip portion 312 is partially or fully received within the recess 333.
  • the inner diameter of the spring 320 is larger than the outer diameter of the bottom portion 332, and the outer diameter of the spring 320 is smaller than the outer diameter of the top portion 331.
  • Figure 4 is a cross-sectional view showing the valve assembly 3 in an assembled state.
  • the spring seat 330 is located at an upper end of the spring 320. Since the inner diameter of the spring 320 is larger than the outer diameter of the bottom portion 332, it is smaller than the outer diameter of the top portion 331.
  • the bottom 332 of the spring seat is received in the spring 330 and the top 331 is located above the spring 320.
  • the end portion 312 is It is received in the groove 333.
  • the spherical end surface of the end portion 312 is in contact with the conical groove bottom line of the groove 333. Further, the end portion 312 and the groove 333 can achieve a clearance fit.
  • the clearance fit refers to a fit with a gap (including a minimum gap equal to zero).
  • both are the loosest clearance fit state after assembly; when the groove 333 is the minimum limit size and the tip end When the portion 312 is the maximum limit size, the two are the tightest clearance fit after assembly.
  • the size of the side wall of the end portion 312 depends on the size of the side wall of the recess 333 to optimize the clearance between the two.
  • the adjustment screw 310 can always be perpendicular to the spring seat 330 and in contact with each other. Even if the spring force is too large, since the groove 333 has a cylindrical side wall perpendicular to the radial force, the end portion 312 accommodated in the groove does not easily come off the four grooves 333. Moreover, since the adjustment screw 310 can always be in vertical contact with the spring seat 330. The spring seat 330 does not twist around the end portion 312 to prevent the spring 320 from being integrally bent. The spring 320 is more stable when it is operated, and the valve assembly 3 is prevented from drifting at a set point of the parameter, thereby improving the overall working performance of the valve assembly.
  • the outer diameter of the top portion 331 is smaller than the inner diameter of the spring cover 350, such that the spring seat 330 is movably disposed in the inner cavity, and the spring seat 330 and the spring 320 follow the adjusting screw 310 free to move up and down, the adjustment range is large.
  • a second embodiment of the present invention provides a valve assembly with a bearing, and a second embodiment of the present invention will be further described below with reference to Figs. 5 and 6.
  • a second embodiment of the present invention provides a valve assembly 5.
  • the end portion 512 is It is received in the groove 533.
  • the shape of the side wall of the end portion 512 depends on the size of the side wall of the recess 533 to allow clearance therebetween.
  • the tip portion 512 has the same cylindrical sidewall as the sidewall of the groove 533.
  • the end surface 514 of the end portion 512 is planar, and the recess 533 has a planar groove bottom 535.
  • a bearing 560 is disposed between the end surface 514 and the groove bottom 535.
  • FIG. 6 is an enlarged view of the bearing 560.
  • the bearing 560 includes a shaft 561, a seat piece 562, and a plurality of balls 563 between the shaft piece 561 and the seat piece 562.
  • the shaft piece 561 and the seat piece 562 are both ring-shaped and shaped.
  • the bearing 560 is placed over the bottom 535 of the groove, and the seat piece 562 is in contact with the groove bottom 535 which is planar.
  • the tip portion 512 is placed in the recess 533, the end portion 514 of the end portion which is planar is in contact with the shaft 561.
  • the bottom 535 is also free from friction with the end surface 514 of the adjusting screw 510, and the torsional force received by the spring seat 530 is minimized, thereby eliminating the transmission of the torsional force to the spring 520, enhancing the use effect of the spring.
  • a third embodiment of the present invention provides a valve assembly 7.
  • the valve assembly 7 includes a spring seat 730 provided with a recess 733 and an adjustment screw 710 with a tip portion 712.
  • the groove bottom 735 of the groove 733 is flat, and the end surface 714 of the end portion 712 is spherical.
  • the end surface 714 of the end portion 712 is in point contact with the groove bottom 735. Since the contact area is small, the end surface 714 of the end portion 712 is The frictional force between the groove bottoms 735 of the grooves is reduced, thereby reducing the torsional force of the adjusting screw 710 against the springs, and is less likely to damage the zero device.
  • the other structure of the gang assembly 7 is similar to that of the valve assembly 3 provided in the first embodiment, and will not be described herein.
  • a fourth embodiment of the present invention provides a valve assembly 8.
  • the adjustment screw 810 also includes a stem portion 813 that is coupled to the tip portion 812.
  • the outer diameter of the trunk portion 813 is larger than the end portion 812 such that a bearing 860 is provided between the bottom of the trunk portion 813 and the spring seat top 831.
  • the bearing 860 is looped over the side wall of the end portion 812 and the end face 814 of the end portion 812 is not in contact with the groove bottom 835.
  • the bearing 860 includes a shaft 861, a seat 862, and a plurality of balls 863 between the shaft 861 and the seat 862.
  • the shaft piece 861 and the seat piece 862 are both annular.
  • the bearing 860 is placed between the bottom of the trunk portion 813 and the spring seat top 831.
  • the shaft piece 861 is in contact with the bottom of the trunk portion 813, and the seat piece 862 is in contact with the spring seat top 831.
  • the shaft piece 861 rotates with the trunk portion 813, the seat piece 862 does not substantially rotate, and the spring seat 830 that is in contact therewith does not substantially generate a friction.
  • the spring seat 830 that is in contact therewith does not substantially generate a friction.
  • the bearing 860 is present between the adjusting screw 810 and the spring seat 830 when there is no friction.
  • the torsional force of the spring seat 830 is reduced to a minimum, thereby eliminating the transmission of torsional force to the spring 820, enhancing the bomb The effect of the spring.
  • first, second, third, etc. may be used to describe various elements, components or parts, these elements, components or parts are not limited by these terms; these terms may be used only to distinguish one element, Part or part.
  • terms such as “first”, “second”, and other numerical terms are used, they are not intended to Therefore, the first element, component, or portion described below may be construed as the first element, component, or portion, without departing from the description of the exemplary embodiments.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Safety Valves (AREA)
  • Springs (AREA)
  • Lift Valve (AREA)

Abstract

一种弹簧调节装置，包括调节螺杆（310）、弹簧（320）以及位于调节螺杆（310）和弹簧（320）之间的弹簧座（330）；弹簧座（330）设有凹槽（333），可容纳调节螺杆（310）一端的端头部分，凹槽（333）具有圆柱形侧壁。还公开了一种包括这种弹簧调节装置的阀组件。这种弹簧调节装置可防止调节螺杆端头部分脱离凹槽，且可避免弹簧整体弯曲，从而提高该阀组件整体的工作性能。

Description

一种弹簧调节装置及阀组件
技术领域
本发明涉及一种弹簧调节装置以及包括该弹簧调节装置的阀組 件。 背景技术
弹簧调节装置一般应用于运用弹簧调节和控制参数的元器件， 尤 其应用于各种阀组件。 弹簧调节装置一般包括调节螺杆 101、 弹簧 102 以及位于调节螺杆和弹簧之间的弹簧座 103， 如图 1所示。 阀组件的使 用， 需要旋转所述调节螺杆 101调整所述弹簧 102的压缩量， 实现设置 和调节所控参数的设定点。 所述弹簧座 103 的作用是将所述调节螺杆 101 的力传递给弹簧 102, 两者之间传统的接触方式为所述调节螺杆 101的端面端头部分 104与所述弹簧座 103接触。 当需要设置和调节所 控参数的设定点， 旋转所述调节螺杆 101 , 其末端的所述端头部分 104 随即垂直向下（或向下）移动， 使得与其接触的所述弹簧座 103随着所 述弹簧 102的压缩垂直向下（或向下）移动， 实现对阀组件口 （未在图 中显示）开启和关闭的控制。
但在工作过程中， 弹簧力过大时， 所述端头部分 104可能会脱离所 述弹簧座 103的凹孔 105 , 影响弹簧使用； 再者所述弹簧座 103会以所 述端头部分 104为中心向四周扭转， 导致所述弹簧 102整体弯曲。 这会 使所述弹簧 102 工作时会极不稳定， 阀组件对参数的设定点会发生漂 移， 影响阀组件整体的工作性能。
现有技术中还公开了一种弹簧座， 其仅将上述凹孔的结构改进为 锥形凹部， 但并未有进一步内容公开。 发明内容 本发明提供了一种弹簧调节装置及阀组件， 解决上述存在的技术 问题。
一方面， 本发明提供一种弹簧调节装置， 包括调节螺杆、 弹簧以及 位于上述调节螺杆和上述弹簧之间的弹簧座； 上述弹簧座设有凹槽， 可 容纳上述调节螺杆一端的端头部分， 上述凹槽具有圓柱形侧壁。
上述调节螺杆的端头部分包括侧壁和底部端面； 上述端头部分侧壁 与上述 ϋ槽的圆柱形侧壁间隙配合。
上述凹槽的槽底与上述端头部分的底部端面之间设置轴承。
上述调节螺杆还包括与上述端头部分相连的主干部分， 上述主干部 分的外径大于上述端头部分的外径， 上述主干部分的底部与上述弹簧座 的顶部之间设置轴承。
上述端头部分的底部与上述凹槽槽底线接触或者点接触。
上述四槽的槽底呈锥面或者平面。
本发明提供的弹簧调节装置实施例通过在上述弹簧座设置了具有 圓柱形侧壁的凹槽， 使得当弹簧力过大时， 容纳在上述凹槽内的端头部 分不会轻易脱离上述凹槽。并且，由于上述调节螺杆垂直于上述弹簧座， 上述弹簧座不会以上述端头部分为中心向四周扭转， 防止了上述弹簧整 体弯曲。 上述弹簧工作时会更稳定， 避免上述阀组件对参数的设定点会 发生漂移， 提高阀組件整体的工作性能。
再进一步地， 当上述调节螺杆转动时， 上述凹槽的槽底与上述端 头部分的底部端面之间设置的轴承大大减少槽底和底部端面之间的摩 擦力。 上述弹簧座受到的扭转力降低到最小， 从而杜绝了扭转力传递 给上述弹簧， 增强上述弹簧的使用效果。 另外， 主干部分的底部与弹 簧座的顶部之间设置轴承， 可起到相同的技术效果。
再者， 上述端头部分的底部端面设计为球面， 在其与上述回槽槽 底点接触时， 亦减小上述端头部分与上述凹槽之间的摩擦力， 不易损 坏零器件。
还有， 将上述槽底为锥面， 使得上述端头部分与其线接触， 减小 摩擦且易于加工。
另一方面， 本发明还提供了一种阀组件， 包括上述任一的弹簧调 节装置。 附图说明
图 1是现有技术中的一种阀组件；
图 2是现有技术中的另一种阀组件；
图 3是本发明第一实施例提供的阀组件的局部剖面图；
图 4是本发明第一实施例提供的阀组件的整体剖面图；
图 5是本发明第二实施例提供的阀组件的剖面图；
图 6是本发明第二实施例提供的阀组件的剖面图 A部分的局部图； 图 7是本发明第三实施例提供的阀组件的局部剖面图；
图 8是本发明第四实施例提供的阀组件的局部剖面图。 具体实施方式
本发明的实施例提供了弹簧调节装置及包括该弹簧调节装置的阀 组件。 所述弹簧调节装置包括调节螺杆、 弹簧以及位于所述调节螺杆 和所述弹簧之间的弹簧座。 所述弹簧座设有凹槽， 其侧壁为圆柱形； 所述端头部分侧壁与所述凹槽的侧壁间隙配合， 所迷端头部分可部分 或完全容纳在所述凹槽内。 当弹簧力过大时， 由于所述凹槽具有垂直 于径向力的圓柱形侧壁， 容纳在所述凹槽内的端头部分不会轻易脱离 所述凹槽。 并且， 由于所述调节螺杆垂直于所述弹簧座， 所述弹簧座 不会以所述端头部分为中心向四周扭转， 防止了所述弹簧整体弯曲。 所述弹簧工作时会更稳定， 避免所述阀组件对参数的设定点会发生漂 移， 提高阀组件整体的工作性能。 以下结合附图以及具体实施例对本发明的技术方案做进一步说 明。 下面对优选实施方式的描述仅仅是示范性的， 而绝不是对本发明 及其应用或用法的限制。
实施例一
如图 3所示， 本发明第一实施例提供了一种阀组件 3。 所述阀组件
3 包括弹簧调节装置， 所述弹簧调节装置主要包括调节螺杆 310、 弹簧 320以及位于所述调节螺杆 310和所述弹簧 320之间的弹簧座 330。 所 述阀组件 3还包括弹簧盖 340和弹簧罩 350, 两者组成的内腔以容纳所 述调节螺杆 310的一端、 所述弹簧 320以及所述弹簧座 330。 所述弹簧 座 330上设置具有圓柱形侧壁 334的凹槽 333。 优选地， 所述弹簧座 330 可设计为包括顶部 331以及由所述顶部 331向下延伸出的底部 332。 所 述顶部 331挡在所述弹簧 320之上， 外径小于所述顶部 331的所述底部 332卡接在所述弹簧 320的内腔。 所述顶部 331的中心位置设有具有圆 柱形侧壁的 tt!J槽 333。 优选地， 所述凹槽 333的槽底 335可以设计为与 加工工具形状相同的圆锥形， 便于加工和生产。
所述调节螺杆 310包括主干 311和端头部分 312。 所述端头部分 312 位于所述调节螺杆 310 的端部。 所述端头部分 312具有圆柱形的侧壁 313以及呈球面的底部端面 314。 所述端头部分 312设于所述内腔中并 容纳于所述凹槽 333 内， 所述调节螺杆 310 的另一端设置于所述内腔 外。 所述端头部分 312的长度随所述凹槽 333的深度而定， 以使所述端 头部分 312部分或全部容纳于所述凹槽 333内。 所述弹簧 320的内径大 于所述底部 332的外径， 所述弹簧 320的外径小于所述顶部 331 的外 径。
图 4是所述阀组件 3处于装配状态的剖面图。 所述弹簧座 330位于 所述弹簧 320的上端。 由于所述弹簧 320的内径大于所述底部 332的外 径， 小于所述顶部 331的外径。 所述弹簧座的底部 332容纳于所述弹簧 330中， 而所述顶部 331位于所述弹簧 320之上。 所述端头部分 312容 纳于所述凹槽 333中。 所述端头部分 312的球面端面与所述凹槽 333的 圆锥形槽底线接触。 进一步地， 所述端头部分 312与所述凹槽 333可实 现间隙配合。 所述间隙配合是指具有间隙（包括最小间隙等于零）的配 合。 当所述凹槽 333为最大极限尺寸而所述端头部分 312为最小极限尺 寸时， 装配后两者为最松的间隙配合状态； 当所述凹槽 333为最小极限 尺寸而所述端头部分 312为最大极限尺寸时， 装配后两者为最紧的间隙 配合状态。 所述端头部分 312侧壁的尺寸随所述凹槽 333侧壁的尺寸而 定， 以使两者之间间隙配合为最佳。
所述调节螺杆 310可始终与所述弹簧座 330垂直并相互接触。 即使 弹簧力过大， 由于所述凹槽 333具有垂直于径向力的圓柱形侧壁， 容纳 在所述凹槽内的端头部分 312不会轻易脱离所述四槽 333。 再者， 由于 所述调节螺杆 310可始终与所述弹簧座 330垂直相接触。 所述弹簧座 330不会以所述端头部分 312为中心向四周扭转， 防止所述弹簧 320整 体弯曲。 所述弹簧 320工作时会更稳定， 避免所述阀组件 3对参数的设 定点会发生漂移， 提高阀组件整体的工作性能。 另外， 所述顶部 331的 外径小于所述弹簧罩 350的内径， 使得所述弹簧座 330可活动地设于所 述内腔中， 所述弹簧座 330和所述弹簧 320随所述调节螺杆 310自由上 下移动， 调节范围较大。
实施例二
由于所述端头部分与所述弹簧座直接接触， 旋转所述调节螺杆时 会与所述弹簧座发生摩擦， 所述弹簧座受到扭转力并将其传递给所述 弹簧， 影响所述弹簧的使用。 因此， 本发明的第二实施提供了一种带 有轴承的阀组件， 以下结合附图 5和附图 6对本发明的第二实施例做进 一步说明。
如图 5所示， 本发明第二实施例提供了一种阀组件 5。 所述弹簧座
530位于所述弹簧 520的上端。 所述弹簧座的底部 532容纳于所述弹簧 520中， 而所述顶部 531位于所述弹簧 520之上。 所述端头部分 512容 纳于所述凹槽 533中。 所述端头部分 512的侧壁形状随所述凹槽 533的 侧壁尺寸而定， 以使两者之间间隙配合。 因此所述端头部分 512具有与 所述凹槽 533侧壁相同的圓柱形侧壁。 所述端头部分 512的端面 514呈 平面， 所述凹槽 533具有平面的槽底 535。 在所述端面 514与所述槽底 535之间设有轴承 560。
图 6是所述轴承 560的放大图。 所述轴承 560包括轴片 561、 座片 562以及位于所述轴片 561和所述座片 562之间的若干滾珠 563。 所述 轴片 561和所述座片 562均呈环、形。 所述轴承 560置于所述槽底 535之 上， 所述座片 562与呈平面状的所述槽底 535接触。 当所述端头部分 512置于所述凹槽 533中， 呈平面状的所述端头部分端面 514与所述轴 片 561相接触。
因此， 如图 5-6所示， 在旋转所述调节螺杆 510时， 所述轴片 561 随所述端头部分端面 514旋转， 所述座片 562基本不会转动， 则与其接 触的所述槽底 535基本不会发生摩擦。 除了可以径向定位和防止弹簧弯 曲之外， 同时， 由于所述调节螺杆 510的端面 514与所述弹簧座 530的 槽底 535分离， 所述调节螺杆 510转动时， 所述弹簧座 530的槽底 535 与所述调节螺杆 510的端面 514也就没有摩擦， 所述弹簧座 530受到的 扭转力降低到最小， 从而杜绝了扭转力传递给所述弹簧 520, 增强弹簧 的使用效果。
本技术领域的技术人员应该理解， 对本发明第二实施例所提供的 轴承的描述仅仅是示范性的， 所述轴承不应仅限于上述轴承的结构。 实施例三
如图 7所示， 本发明第三实施例提供了一种阀组件 7。 所述阀组件 7包括设有凹槽 733的弹簧座 730及带有端头部分 712的调节螺杆 710。 所述凹槽 733的槽底 735呈平面， 所述端头部分 712的端面 714呈球 面。 当所述端头部分 712容纳于所述凹槽 733时， 所述端面 714与所述 槽底 735点接触。 由于接触面积很小， 所述端头部分 712的端面 714与 所述凹槽的槽底 735之间的摩擦力减小， 从而减小所述调节螺杆 710对 所述弹簧的扭转力， 不易损坏零器件。 所述岡组件 7的其他结构与第一 实施例所提供的阀组件 3相类似， 遂在此不再赘述。
实施例四
如图 8所示， 本发明第四实施例提供了一种阀组件 8。 所述弹簧座
830位于所述弹簧 820的上端。 所述弹簧座的底部 832容纳于所述弹簧 820中， 而所述顶部 831位于所迷弹簧 820之上。 所述端头部分 812容 纳于所述凹槽 833中。 所述端头部分 812的侧壁形状随所述凹槽 833的 侧壁尺寸而定， 以使两者之间间隙配合。 因此所述端头部分 812具有与 所述凹槽 833侧壁相同的圆柱形侧壁。 所述端头部分 812的端面 814呈 球面， 所述凹槽 833具有锥面的槽底 835。 所述调节螺杆 810还包括与 所述端头部分 812相连的主干部分 813。 所述主干部分 813外径大于所 述端头部分 812 , 以使在所述主干部分 813 的底部与所述弹簧座顶部 831之间设有轴承 860。 所述轴承 860环套在所述端头部分 812的侧壁 上， 且所述端头部分 812的端面 814不与所述槽底 835接触。
所述轴承 860包括轴片 861、 座片 862以及位于所述轴片 861和所 述座片 862之间的若干滚珠 863。 所述轴片 861和所述座片 862均呈环 形。 所述轴承 860置于所述主干部分 813的底部与所述弹簧座顶部 831 之间。 所述轴片 861与所述主干部分 813的底部接触， 所述座片 862与 所述弹簧座顶部 831接触。
在旋转所述调节螺扞 810时， 所述轴片 861随所述主干部分 813旋 转， 所述座片 862基本不会转动， 与其接触的所述弹簧座 830基本不会 发生摩 ^。 除了可以径向定位和防止弹簧弯曲之外， 同时， 由于所述 调节螺杆 810的端面 814与所述弹簧座 830的槽底 835分离， 且所述主 干部分 813的底部与所述弹簧座 830之间存在所述轴承 860, 所述调节 螺杆 810转动时与所述弹簧座 830之间没有摩擦。 所述弹簧座 830受到 的扭转力降低到最小， 从而杜绝了扭转力传递给所述弹簧 820, 增强弹 簧的使用效果。
本技术领域的技术人员应该理解， 对本发明第四实施例所提供的 轴承的描述仅仅是示范性的， 所述轴承不应仅限于上述轴承的结构。
本发明提供的示例性实施例以使本公开更加完整， 并向本领域技 术人员全面传达其保护范围。 阐述许多细节， 比如特定部件、 装置和 方法的例子， 以提供对本公开的全面的实施例的理解。 对本领域技术 人员来说很明显的， 不必提供细节， 示例性实施例可以许多不同形式 实施， 且不应该解释为限制本公开的范围。 在某些示例性实施例中， 众所周知的过程、 众所周知的装置结构和众所周知的技术不作详细说 明。
尽管在此可以使用术语第一、 第二、 第三等等以描述各种元件、 部件或部分， 但这些元件、 部件或部分不应被这些术语限制； 这些术 语可仅用于区别一个元件、 部件或部分。 当在此使用术语如 "第一"、 "第二"及其他数值术语时， 其并不包含顺序或次序， 除非上下文中明 确指出。 因此， 在不脱离示例性实施例的说明的情况下， 以下所述第 一元件、 部件、 部分可以解释为术语第一元件、 部件、 部分。
尽管在此已详细描述本发明的各种实施方式， 但是应该理解本发明 并不局限于这里详细描述和示出的具体实施方式，在不偏离本发明的实 质和范围的情况下可由本领域的技术人员实现其它的变型和变体。所有 这些变型和变体都落入本发明的范围内。 而且， 所有在此描述的构件都 可以由其他技术性上等同的构件来代替。

Claims

权 利 要 求 书
1. 一种弹簧调节装置， 包括调节螺杆、弹簧以及位于所述调节螺杆 和所述弹簧之间的弹簧座； 所述弹簧座设有四槽， 可容纳所述调节螺杆 一端的端头部分， 其特征在于， 所述凹槽具有圆柱形侧壁。
2. 根据权利要求 1所述的弹簧调节装置，其特征在于， 所述调节螺 杆的端头部分包括侧壁和底部端面； 所述端头部分侧壁与所述凹槽的圓 柱形侧壁间隙配合。
3. 根据权利要求 1或 2所述的弹簧调节装置， 其特征在于， 所述凹 槽的槽底与所述端头部分的底部端面之间设置轴承。
4.根据权利要求 1或 2所述的弹簧调节装置，其特征在于， 所述调 节螺杆还包括与所述端头部分相连的主干部分， 所述主干部分的外径大 于所述端头部分的外径， 所述主干部分的底部与所述弹簧座的顶部之间 设置轴承。
5. 根据权利要求 1或 2所述的弹簧调节装置，其特征在于， 所述端 头部分的底部与所述凹槽槽底线接触或者点接触。
6. 才艮据权利要求 1或 2所述的弹簧调节装置，其特征在于， 所述回 槽的槽底呈锥面或者平面。
7. 一种阀组件， 其特征在于， 包括如权利要求 1-6任一所述的弹簧 调节装置。
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