The invention provides gas sucking type perforated
microsphere expanding equipment. The gas sucking type perforated
microsphere expanding equipment comprises a preheating furnace, an
elevator, an expanding furnace, an induced draft fan and a product bin, and a feeding port and the
elevator are positioned at one end of the expanding furnace. Materials enter the preheating furnace via the feeding port, then are stirred up and down in the preheating furnace and are pushed ahead along the spiral direction. The heated materials enter a storage bin through the
elevator, a plurality of guide pipes are arranged on the circumferential face of the bottom face of the storage bin, the materials in the storage bin are fed into corresponding hoppers through the guide pipes, each hopper is provided with a manual flow regulating
handle used for controlling the quantity of the materials fed into the expanding furnace, the materials in the hoppers fall along the inner wall of the expanding furnace, the materials in high-temperature areas nearby burners expand rapidly, the expanding size of the expanded materials is 8-15 times of the original size of the materials, microspheres subjected to expansion
sintering move from the bottom to the top of the expanding furnace under the action of sucking force of the induced draft fan and are conveyed to the product bin via a conveying
pipe, and the hoppers and the burners are the same in number and corresponding in position. The gas sucking type perforated
microsphere expanding equipment is high in working efficiency.