Coating cylinder assembly for coating machine

The utility model discloses a coating cylinder assembly for a coating machine. The coating cylinder is reasonable in framework, convenient to machine, high in sealing degree and high in work efficiency. The outer side wall of the upper portion of the coating cylinder is provided with a thread, a sealing nut is provided with clamping jaw grooves, the sealing nut is in sealing connection with the screw structure of the upper portion of the coating cylinder, a discharging opening is formed in the position, below the thread, of the upper portion of the coating cylinder, the discharging opening is communicated with an inner cavity of the coating cylinder, the inner side wall of the discharging opening is provided with an internally embedded type thread, a suction inlet is formed in the lower portion of the coating cylinder, the suction inlet is communicated with the inner cavity of the coating cylinder, the inner side wall of the suction inlet is provided with an internally embedded type thread, the bottom of the inner cavity of the coating cylinder is provided with a valve element supporting column, the diameter of the valve element supporting column is one third of the diameter of the inner cavity of the coating cylinder, a circular section is arranged on the lower portion of the inner cavity of the coating cylinder, and a bolt opening is formed in the bottom end of the coating cylinder. As a whole, the coating cylinder assembly is simple in design, high in sealing intensity, big in pressure, light in weight, small in size, high in motility, convenient to transport, high in work efficiency and strong in reliability.