Pneumatic diaphragm control valve
A pneumatic membrane and regulating valve technology, applied in valve details, valve devices, engine components, etc., can solve the problems of shortening the service life of pneumatic membrane regulating valves, affecting the service life of the actuator, and the insensitive deformation of the diaphragm, so as to prolong the service life. Long life, simple structure and uniform force
Inactive Publication Date: 2016-01-27
陈俊
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Problems solved by technology
[0003] The pneumatic diaphragm control valves currently in use cannot satisfy the accuracy of the Baoheng valve positioner and the stability of the valve actuator structure. During use, the force is uneven and easily damaged, resulting in shortened service life of the pneumatic diaphragm control valve. At the same time, the diaphragm The deformation of the diaphragm is not sensitive enough, and the diaphragm itself is thick, which directly affects the service life of the entire actuator and increases the cost of the factory
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[0014] The present invention will now be further described in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.
[0015] Such as figure 1 A pneumatic membrane regulating valve shown has a valve seat 1, a valve body 2 and a pneumatic membrane chamber 3, the valve body 2 is a hollow structure, a valve core 4 is arranged inside the valve body 2, and the valve core 4 is connected to a valve stem 5, There is a push rod 6 on the valve stem 5, a stroke pointer 7 is arranged between the valve stem 5 and the push rod 6, the push rod 6 is connected with the diaphragm 8 arranged in the pneumatic diaphragm chamber 3, and the valve body 2 is connected with the valve stem There is a sealing packing 9 at the center, the valve seat 1, the valve body 2 and the p...
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The invention relates to a pneumatic diaphragm control valve. The pneumatic diaphragm control valve is provided with a valve seat, a valve body and a pneumatic diaphragm chamber. The valve body is of a hollow structure. A valve element is arranged in the valve body and connected with a valve rod. The ground valve element tightly makes contact with the valve seat. The surface of the valve rod is upright and smooth. A push rod is arranged on the valve rod, a travel pointer is arranged between the valve rod and the push rod, the push rod is connected with a diaphragm arranged in the pneumatic diaphragm chamber, sealing filler is arranged at the joint of the valve body and the valve rod, and therefore the sealing performance between the valve body and the valve rod is improved. The pneumatic diaphragm control valve is simple in structure, convenient to use, good in accuracy and stability, uniform in stress in the using process and not prone to damage, the sensitivity of the diaphragm is improved, the diaphragm is thin, the service life of the executing structure of the product is prolonged, and cost is reduced.
Description
technical field [0001] The invention relates to a pneumatic film regulating valve. Background technique [0002] Pneumatic film regulating valve is referred to as regulating valve for short, which is composed of executive mechanism and regulating mechanism. In the 80 years of history from the beginning of the 20th century to the present, ten major categories of regulating valve products have been produced successively, which can be widely used in medium regulation and remote control in chemical, petroleum, metallurgy, electric power, and textile industries. [0003] The pneumatic diaphragm control valves currently in use cannot satisfy the accuracy of the Baoheng valve positioner and the stability of the valve actuator structure. During use, the force is uneven and easily damaged, resulting in shortened service life of the pneumatic diaphragm control valve. At the same time, the diaphragm The deformation of the diaphragm is not sensitive enough, and the diaphragm itself is ...
Claims
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IPC IPC(8): F16K31/12
Inventor 陈俊
Owner 陈俊