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Corrosion-resistant self-operated regulating valve device

A self-operated control valve, corrosion-resistant technology, used in mechanical equipment, safety valves, balance valves, etc., can solve the problems of short service life, poor stem operation stability, low movement flexibility, etc., to improve operational flexibility, The effect of prolonging the service life and reducing the contact friction resistance

Pending Publication Date: 2018-12-21
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 invention provides a corrosion-resistant self-operated regulating valve device that solves the above problems

Method used

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  • Corrosion-resistant self-operated regulating valve device
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  • Corrosion-resistant self-operated regulating valve device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a corrosion-resistant self-operated regulating valve device, 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 a lower valve cover 2 is provided at the opening of the axial top end of the valve body 1. An upper valve cover 3 is provided; the other axial end of the upper valve cover 3 is sequentially provided with a lower membrane cover 4 and an upper membrane cover 5, and a diaphragm 6 is arranged between the lower membrane cover 4 and the upper membrane cover 5; The free end of the upper membrane 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 ...

Embodiment 2

[0030] Further improvement on the basis of Embodiment 1, the upper guide sleeve 12 sequentially includes a straight line segment 121 and an outwardly convex arc segment 122 along the direction perpendicular to the inner wall of the upper valve cover 3, and the outer wall of the valve stem 9 is connected to the arc line. The outer edges of segments 122 are in line contact. 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 connection; A limiting ring plate 16 is arranged on the outer wall of the axial top end, and the outer diameter of the limiting ring plate 6 is smaller than the outer diameter of the valve core 17 on the valve stem 9 . The inner wall of the lower guide sleeve 13 is provided with some balls, and the inner wall of the lower guide sleeve 13 is in rolling contact with the outer wall of the valve stem 9 through...

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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PUM

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Abstract

The invention discloses a corrosion-resistant self-operated regulating valve device. A lower valve cover and an upper valve cover are arranged at the both axial ends of a valve body. A lower film cover and an upper film cover are sequentially arranged at the axial end of the upper valve cover. A membrane is disposed between the lower film cover and the upper film cover. A spring cover is arrangedat the axial end of the free end of the upper film cover. A spring is arranged in the spring cover. The axial end of a vale rod is connected to the membrane through a lower tray and an upper tray. Theaxial other end of the valve rod sequentially penetrates through the lower film cover and the upper valve cover and then extends into a valve body. A plurality of upper guide sleeves are arranged inthe upper valve cover in a sleeving mode. The upper guide sleeves are evenly distributed in the axial direction of the upper valve cover at intervals. The lower valve cover is provided with lower guide sleeves, and the valve rod sequentially passes through the upper guide sleeves and the lower guide sleeves and moves up and down in the axial direction of the upper guide sleeve and the lower guidesleeve. A plurality of vent holes are formed in the upper valve cover. The valve rod is not provided with sealing filter and arranged in a sealing mode, movement flexibility is higher, and the valve rod is guided and supported by the guide sleeves, running stability is higher, and the service life is long.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a corrosion-resistant self-operated regulating valve device. 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 fle...

Claims

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Application Information

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IPC IPC(8): F16K17/32
CPCF16K17/32
Inventor 陈伟孙标王帮春
Owner 四川勃朗蜀威科技有限公司