NOVELTY - A dust-free straw press-forming production line comprises a feeding conveyer (1), a knife-roller chaff cutter (2), a material-crushing conveyer (3), a sorting sieve (4), a storage bin integrated device (5), a straw feeder (6), a straw block-press machine (7) and a finished goods warehouse assembly (8), which are connected in turn. A fan (5.1) of the storage bin integrated device is connected with an outlet of the sorting sieve. A filter-bag dust collector (5.4) on top of storage bin communicates with a cyclone dust collector (5.3), forming a fixed-point dust-removing purifying structure.    USE - Dust-free straw press-forming production line.    ADVANTAGE - The production line controls the generating of dust on one hand, and makes the necessary purifying and dedusting on the other hand, thus improving the whole production environment. It has high work efficiency, excellent benefit, and low labors of the operator.    DETAILED DESCRIPTION - A dust-free straw press-forming production line comprises a feeding conveyer (1), a chaff cutter (2), a material-crushing conveyer (3), a sorting sieve (4), a storage bin integrated device (5), a straw feeder (6), a straw block-press machine (7) and a finished goods warehouse assembly (8), which are connected in turn. Finished goods warehouse (8.2) is on high position and connected with an outlet of the block-press machine by a finished conveyer (8.1) arranged obliquely. Bottom end of the finished goods warehouse is provided with a buffer hopper (8.3), an automatic packing weigher (8.4) and a discharge conveyer (8.5) arranged horizontally downwards in turn. The chaff cutter is a knife-roller chaff cutter, and the cutting length is 30-50 mm. A fan (5.1) of the storage bin integrated device is connected with an outlet of the sorting sieve. The seal joint of an output opening of the fan is on a cyclone dust collector (5.3) and a filter-bag dust collector (5.4) above a storage bin. The filter-bag dust collector on the top of the storage bin communicates with the cyclone dust collector, forming a fixed-point dust-removing purifying structure. An outlet of a spiral conveyer (5.5) mounted on the bottom of the storage bin horizontally faces to an inlet of a low-position tempering material conveying mechanism (5.6), an outlet of which is right above the inlet end of the straw feeder. A feed inlet of the straw block-press machine is right below the outlet of the straw feeder, forming an automatic feeding structure.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating the dust-free straw press-forming production line.    Feeding conveyer (1)    Chaff cutter (2)    Crushing conveyer (3)    Sorting sieve (4)    Storage bin integrated device (5)    Fan (5.1)    Dust collector (5.3)    Filter-bag dust collector (5.4)    Spiral conveyer (5.5)    Tempering material conveying mechanism (5.6)    Straw feeder (6)    Straw block-press machine (7)    Finished goods warehouse assembly (8)    Finished conveyer (8.1)    Finished goods warehouse (8.2)    Buffer hopper (8.3)    Automatic packing weigher (8.4)    Discharge conveyer (8.5)