Material conveying device and material processing apparatus

A material conveying device, comprising:

• a frame;
• two or more conveying mechanisms consecutively arranged in a conveying direction of a material, each of the two or more conveying mechanisms having an input end for receiving the material and an output end for outputting the material, the input end of each of the two or more conveying mechanisms being connected to the output end of an immediately previous conveying mechanism adjacent to the conveying mechanism in the conveying direction,
• wherein each of the two or more conveying mechanisms comprises:
• a plurality of first rollers rotatably connected to the frame;
• and
• a driver in a transmission connection with one of the plurality of first rollers to drive the one of the plurality of first rollers to rotate;
• and
• at least one first limiting member, and at least one first lifting assembly associated with the at least one first limiting member,
• wherein the at least one first lifting assembly is connected to the at least one first limiting member, and is capable of driving the at least one first limiting member to be lifted or lowered, such that the at least one first limiting member is capable of being lifted through a gap between a pair of adjacent first rollers to prevent the material from being conveyed, or the at least one first limiting member is capable of being lowered through the gap between the pair of two adjacent first rollers to allow the material to be conveyed,
• wherein the material conveying device further comprises a guide assembly configured to guide the material during material conveying, the guide assembly being connected to the frame and located at two opposite ends of the plurality of first rollers, wherein:
• the guide assembly comprises a plurality of guide wheels arranged at intervals on the frame, the plurality of guide wheels being distributed at two ends of the plurality of first rollers corresponding to the plurality of guide wheels and rotatably connected to the frame;
• and
• a channel for the material to pass therethrough is defined by the plurality of guide wheels, the frame, and the plurality of first rollers together.