Suction valve body assembly for coating machine

The utility model discloses a suction valve body assembly for a coating machine. The assembly is reasonable in framework, convenient to machine, high in sealing degree and high in work efficiency. The assembly comprises a valve body, a valve element and a sealing nut. The bottom of a valve cavity of the valve body is provided with a valve element supporting column, a suction opening is formed in the lower portion of the valve body, the suction opening is communicated with an inner cavity of the valve body, the inner side wall of the suction opening is provided with an internally embedded thread, the structural plane of the inner cavity of the valve body is of an internally tangent semicircular structure, the inner cavity is matched with the valve element to seal the inner cavity of the valve body, the outer side of the upper portion of the valve body is provided with a protruding clamping ring which is matched with the sealing nut to be connected with a coating cylinder in a sealed mode, and the valve element supporting column, the protruding clamping ring and the valve body are of an integrated structure. As a whole, the assembly is simple in design, the related assembled parts are few, the service life of the valve element is long, the maintenance cost is low, the sealing intensity is high, the pressure is high, the weight is light, and the work efficiency is high.