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High-stability self-operated regulating valve mechanism

A technology for regulating valves and high stability, which is applied in the direction of valve lift, valve details, valve devices, etc., which can solve the problems of low flexibility of movement, poor stability of valve stem operation, short service life, etc., and achieve flexible movement and low spring stiffness , the effect of improving stability

Pending Publication Date: 2019-01-01
四川勃朗蜀威科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the spring film type internal pressure self-operated valve structure, the valve stem is often sealed by sealing packing, the action flexibility is low, and the long valve stem has poor running stability and short service life. The present invention provides a highly stable self-operated regulating valve mechanism that solves the above problems

Method used

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  • High-stability self-operated regulating valve mechanism
  • High-stability self-operated regulating valve mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a high-stability self-operated regulating valve mechanism, including a valve body 1, a lower valve cover 2 is provided at the opening of the axial bottom end of the valve body 1, and the axial top end of the valve body 1 is open The upper valve cover 3 is provided at the upper valve cover 3; the other axial end of the upper valve cover 3 is provided with a lower membrane cover 4 and an upper membrane cover 5 in turn, and a diaphragm 6 is arranged between the lower membrane cover 4 and the upper membrane cover 5 ; The free end of the upper film cover 5 is provided with a spring cover 7, and the spring cover 7 is provided with a spring 8;

[0027] The valve body structure also includes a valve stem 9, one axial end of the valve stem 9 is connected to the diaphragm 6 through the lower tray 10 and the upper tray 11, and the diaphragm 6 is pressed between the lower tray 10 and the upper tray 11, The axial bottom end of the spring 8 is used to contact...

Embodiment 2

[0030] Further improvement on the basis of Example 1, the inner wall of the through hole for passing through the valve stem 9 on the upper bonnet 3 is provided with an internal thread, and the outer wall of the upper guide sleeve 12 is provided with a thread suitable for the internal thread. and the direction from the upper bonnet 3 to the valve body 1 is the screw-in direction of the upper guide sleeve 12; the upper bonnet 3 is also provided with a number of vent holes 14, which are used to communicate with the valve. The chamber inside the body 1 and between the lower membrane cover 4 and the diaphragm 6. The plate surface of the lower tray 10 facing the lower membrane cover 4 is provided with a slot for loosely fitting into the axial end of the upper guide sleeve 12 . The lower bonnet 2 is provided with a mounting hole 15 on the cover plate facing the valve body 1, and the axial bottom end of the lower guide sleeve 13 is screwed into the mounting hole 15 through threaded co...

Embodiment 3

[0032] Further improvement on the basis of Embodiment 2, the axial top end of the spring 8 is fixed inside the top end of the spring cover 7 through the spring seat 18; the axial top end of the spring cover 7 is also rotatably connected with the adjustment screw assembly 20 through the bearing 19 .

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Abstract

The invention discloses a high-stability self-operated regulating valve mechanism. A lower valve deck and an upper valve deck are arranged at the two axial ends of a valve body correspondingly. A lower film cover and an upper film cover are sequentially arranged at the other axial end of the upper valve deck. Film is arranged between the lower film cover and the upper film cover. A spring hood isarranged at the free end of the upper film cover. A spring is arranged in the spring hood. One axial end of a valve rod is connected with the film through a lower tray and an upper tray. The axial bottom end of the spring is used for making contact with the upper tray. The other axial end of the valve rod sequentially penetrates through the lower film cover and the upper valve deck and stretches into the valve body. An upper guide sleeve is arranged on the upper valve deck. A lower guide sleeve is arranged on the lower valve deck. The shaft axes of the upper guide sleeve, the lower guide sleeve and the valve rod coincide. The valve rod sequentially penetrates through the upper guide sleeve and the lower guide sleeve and moves up and down in the axial direction of the upper guide sleeve andthe lower guide sleeve. The valve rod provided by the invention is not sealed with sealing filler, the action flexibility is high, the valve rod is guided and supported through the guide sleeves, theoperating stability is high, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a highly stable self-operated regulating valve mechanism. Background technique [0002] The self-operated pressure regulating valve does not require external energy, and can work in places without electricity and gas, which is convenient and saves energy. The range of pressure segments is thin and intersects with each other, and the adjustment accuracy is high. The pressure set point can be set continuously during operation. Rubber diaphragm type detection, the actuator has high detection accuracy and sensitive action. The pressure balance mechanism is adopted to make the regulating valve respond sensitively and control accurately. [0003] The existing spring-membrane type internal pressure self-operated valve adopts cylindrical springs to realize the internal pressure of the valve without the need for external pressure pipes, and has good market application value. The flexib...

Claims

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Application Information

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IPC IPC(8): F16K1/00F16K1/32F16K1/36F16K31/36
CPCF16K1/00F16K1/32F16K1/36F16K31/36
Inventor 陈伟孙标王帮春
Owner 四川勃朗蜀威科技有限公司