Material suction pipe of feeding device

The material suction pipe of the feeding device comprises a suction pipe and a suction head, the suction pipe and the suction head are in meshed connection through threads, the suction head is composed of a sleeve and a screen, a clamping groove is formed in the inner wall of a pipe opening of the sleeve, the screen is composed of a lantern ring and a net part, and the net part is fixedly installed in the lantern ring. The lantern ring is provided with an elastic element, a buckle, a key hole, a mounting groove and a fixing column, the buckle is provided with a key, a clamping plate and a connecting plate, the key is fixedly connected with the connecting plate, the clamping plate is fixedly connected with the connecting plate, the connecting plate is provided with a positioning groove, the buckle is mounted in the mounting groove, the elastic element is inserted into the fixing column, and one end of the elastic element is mounted in the mounting groove; the clamping plate is provided with a clamping hook, an