Horizontal belt type filter material gravity and vacuum suction is a kind of used to realize the solid-liquid separation equipment. Its unique structure and operating principle determines that it has high filtration efficiency, low energy consumption, water consumption washing less, washing the filter cake full, simple configuration, smooth operation, low noise, long life and other characteristics of the cloth. Use features include: a wide range of materials adaptability, high filtration efficiency, cleaning cloth can be automatically renewable for easy material handling volume control, can achieve multiple reverse washing, a small amount of wash water, good corrosion resistance, automatic continuous operation.