... , separation unloading device, roots blower or vacuum pump), Positive press pneumatic conveying machine (pressure pump, combination pump, Air compressor) and ... 18, 20, 25, 30,35m. Productions:XS series bulk pneumatic ship unloading conveying equipment, it can suction the materials from ... cars which load the bulk material. Type:Bulk material pneumatic conveying device can be classified into some types by ...