Spring adjusting device and valve assembly

A technology of spring adjustment and spring seat, which is applied in the direction of valve devices, safety valves, balance valves, etc., can solve the problems of set point drift of valve assembly parameters, influence of spring use, spring 102 bending, etc., to improve work performance and enhance Effect of use, effect of preventing bending

Inactive Publication Date: 2014-05-07
FISHER JEON GAS EQUIP CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But in the working process, when the spring force is too large, the end portion 104 may break away from the concave hole 105 of the spring seat 103, affecting the use of the spring; twist around the center, causing the spring 102 to bend as a whole
This will cause the spring 102 to be extremely unstable when working, an

Method used

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  • Spring adjusting device and valve assembly
  • Spring adjusting device and valve assembly
  • Spring adjusting device and valve assembly

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0027] Example one

[0028] Such as image 3 As shown, the first embodiment of the present invention provides a valve assembly 3. The valve assembly 3 includes a spring adjusting device, which mainly includes an adjusting screw 310, a spring 320, and a spring seat 330 located between the adjusting screw 310 and the spring 320. The valve assembly 3 further includes a spring cover 340 and a spring cover 350, an inner cavity formed by the two to accommodate one end of the adjusting screw 310, the spring 320 and the spring seat 330. The spring seat 330 is provided with a groove 333 having a cylindrical side wall 334. Preferably, the spring seat 330 may be designed to include a top 331 and a bottom 332 extending downward from the top 331. The top 331 blocks on the spring 320, and the bottom 332 having an outer diameter smaller than the top 331 is clamped in the inner cavity of the spring 320. The center of the top 331 is provided with a groove 333 with a cylindrical side wall. Pre...

Example Embodiment

[0032] Example two

[0033] Since the end part is in direct contact with the spring seat, friction will occur with the spring seat when the adjusting screw is rotated. The spring seat receives the torsion force and transmits it to the spring, affecting the spring use. Therefore, the second embodiment of the present invention provides a valve assembly with a bearing. Figure 5 And Image 6 The second embodiment of the present invention will be further described.

[0034] Such as Figure 5 As shown, the second embodiment of the present invention provides a valve assembly 5. The spring seat 530 is located at the upper end of the spring 520. The bottom 532 of the spring seat is contained in the spring 520, and the top 531 is located above the spring 520. The end portion 512 is received in the groove 533. The shape of the side wall of the end portion 512 is determined according to the size of the side wall of the groove 533, so that there is a clearance fit between the two. Therefo...

Example Embodiment

[0038] Example three

[0039] Such as Figure 7 As shown, the third embodiment of the present invention provides a valve assembly 7. The valve assembly 7 includes a spring seat 730 provided with a groove 733 and an adjusting screw 710 with an end portion 712. The groove bottom 735 of the groove 733 is flat, and the end surface 714 of the end portion 712 is spherical. When the end portion 712 is received in the groove 733, the end surface 714 is in point contact with the groove bottom 735. Due to the small contact area, the friction between the end surface 714 of the end portion 712 and the bottom 735 of the groove is reduced, thereby reducing the torsion force of the adjusting screw 710 on the spring, and it is not easy to damage Zero devices. The other structure of the valve assembly 7 is similar to the valve assembly 3 provided in the first embodiment, so it will not be repeated here.

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PUM

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Abstract

The invention relates to a spring adjusting device and a valve assembly. The spring adjusting device comprises an adjusting threaded rod, a spring and a spring seat, wherein the spring seat is arranged between the adjusting threaded rod and the spring, a groove is formed in the spring base, the tip of one end of the adjusting threaded rod can be contained in the groove, and the groove is provided with a cylindrical side wall. According to the spring adjusting device and the valve assembly, the tip can be prevented from being separated from the groove, overall bending of the spring can be avoided, and overall working performance of the valve assembly is improved.

Description

technical field [0001] The invention relates to a spring adjusting device and a valve assembly comprising the spring adjusting device. Background technique [0002] Spring adjustment devices are generally used in components that use springs to adjust and control parameters, especially in various valve assemblies. The spring adjusting device generally includes an adjusting screw rod 101, a spring 102 and a spring seat 103 between the adjusting screw rod and the spring, such as figure 1 shown. To use the valve assembly, it is necessary to rotate the adjusting screw 101 to adjust the compression amount of the spring 102, so as 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 traditional contact mode between the two is that the end face portion 104 of the adjusting screw 101 contacts the spring seat 103 . When the set point of the controlled paramete...

Claims

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Application Information

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IPC IPC(8): F16K17/06
CPCF16K17/06
Inventor 霍羽雄肖枭类彦威
Owner FISHER JEON GAS EQUIP CHENGDU
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