PAINT QUANTITATIVE SUPPLY APPARATUS

PURPOSE: To accurately enable the quantitative supply of powdery paint by providing a valve metal fitting coming into contact with the peripheral edge of an emitting port simultaneously with the stop of the sending out of powdery paint by the stop of the rotation of a screw to close the emitting port to the base part of a screw feeder at the position above the emitting port in a freely tiltable manner. CONSTITUTION: In a paint quantitative supply apparatus, a screw feeder 3 feeding powdery paint fluidized by high pressure air is provided to the lower end of a hopper 2. In this case, a valve metal fitting attaching casing 22 is provided to the end part on the side of the emitting port 6 of the base part 7 of the screw feeder 3 and the lever-shaped valve disc 10 of a valve metal fitting 9 is pivotally supported by the shaft body supported between the bearings 33, 33 protruding from the base 25 of the casing 22 in a freely tiltable manner. The valve disc 10 consists of a valve main body 11 and a contact metallic material 12 provided with a projection 36 linearly coming into contact with the peripheral edge of the emitting port 6 accompanied by the stop of the sending out of the powdery paint by the stop of the rotation of a screw 4 and excellent seal capacity is obtained by the linear contact of the projection 36 with the peripheral edge of the emitting port 6.