Internal structure of rubber pneumatic butterfly valve for fan
advantage
(1) The shape can be freely confirmed, and the hardness can be controlled by adjusting the composition of the rubber formula, which can meet the requirements for stiffness and strength in all directions;
(2) The internal friction is large, and the shock absorption effect is good, which is conducive to crossing the resonance area and attenuation of high-frequency vibration and noise;
(3) The elastic modulus is much smaller than that of metal, which can produce large elastic deformation;
(4) No sliding parts, easy to take care of;
(5) Small mass, easy installation and disassembly.
(6) The impact stiffness is higher than the static stiffness and dynamic stiffness, which is conducive to impact deformation.

1. Internal leakage of valve and unsuitable length of valve rod: the reason for internal leakage of valve is that the valve rod of air opening single seat pneumatic control valve is too long and the valve rod of air closing single seat pneumatic control valve is too short, resulting in insufficient distance up or down of the valve rod, resulting in gaps between the valve core and the valve seat, which cannot be fully contacted, resulting in internal leakage due to untight closing. The solution is to shorten (or extend) the valve rod of single seat pneumatic control valve to make the valve rod length appropriate, so that it no longer leaks inside.