NOVELTY - A device for producing biological oil by biomass pyrolysis, comprises a vertical spiral feeding mechanism, a jacket water cooling pipe, a pyrolysis furnace, a thermocouple, a pressure meter, a carbon powder room, a three-way valve, an oil storage pipe, a pipe typed condenser, a control box, insulating materials, a gas discharging pipe of the condenser, a tubular separator, a spray nozzle, a spray agent recycle pump, a condenser recycle pump, a feeding water pump, a draught, a discharging pipe of low-heat gas, a speed motor, a stirring screw, a spiral piece, and an inner separation blade.    USE - The device is useful for producing biological oil by biomass pyrolysis (claimed).    ADVANTAGE - The device has simple structure, reliability, and good practicability. Moreover, it is energy saving, environment-friendly, and high in oil production ratio.    DETAILED DESCRIPTION - A device for producing biological oil by biomass pyrolysis, comprises a vertical spiral feeding mechanism, a jacket water cooling pipe, a pyrolysis furnace, a thermocouple, a pressure meter, a carbon powder room, a three-way valve, an oil storage pipe at the bottom of the condenser, a pipe typed condenser, a control box, insulating materials, a gas discharging pipe of the condenser, a tubular separator, a spray nozzle, a spray agent recycle pump, a condenser recycle pump, a feeding water pump, a draught, a discharging pipe of low-heat gas, a speed motor, a stirring screw, a spiral piece, a spiral shaft, a spiral filament at the tail of the spiral shaft, an inner separation blade in the carbon powder room, a carbon discharging valve, and an oil filtering filament net; where the flange connection place of the pyrolysis furnace is arranged with a pyrolysis furnace to prevent forming blocks of the biomass powder when the temperature rises; the recycle water and the cooling water in the pipe typed condenser are respectively connected with the condenser recycle pump; the outside of the pyrolysis furnace is set with insulating materials; the extending section of the bottom of the pyrolysis furnace extends into the first carbon room at one side of the carbon room; the bottom of the second carbon room of the carbon room is a slant structure for the convenience of collecting carbon powder; an inner separation blade is arranged between the first and second carbon rooms; the distance between the inner separation blade of the carbon room and the top of the carbon room is relative to the flow of the pyrolysis gas; the upper end of the inner separation blade of the carbon room is an arced structure; the bottom and lateral surfaces of the carbon room are reserved with pipe for discharging the carbon powder and a pipe valve for discharging the carbon powder; the straight pipe of the pyrolysis furnace is set with three thermocouples separating by equivalent intervals; the temperature detecting contact point of the thermocouple enters the pyrolysis furnace; the carbon powder room is connected with the condenser by the three-way valve; the oil storage pipe at the bottom of the condenser, which is the lower collecting box of the condenser is connected with the fluid in the condenser pipe; the space out of the pipe bundle of the pipe typed condenser is a water cooling and open space; the cooled water is mixed with cold water by the feeding water pump to maintain the low temperature of the water and the discharging of hot water; the gas after cooling enters the tubular separator through the gas outlet pipe of the condenser, along with the raising of the vacuum pressure; the flow speed of the gas is increased to the inlet flow speed of meeting the demand of centrifugal separation; the two alternative tubular separators separates the heavy liquid drops in the gas by centrifugal separation; after periodic alternation, the spray agent recycle pump sends the solvent to the spray pipe nozzle and collects the oil on the wall by the method of spraying and scouring; the flowing resistance of the system is overcome by the draught and the low-heat gas is discharged by the low-heat gas discharging pipe; the whole device is connected in a pipe way to form the biological oil production system of an integrative structure, where it achieves the production of biological oil with low energy consumption; and the feeding speed regulation of the system and the temperature field display in the furnace and the power control are all achieved by the controlling box.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the device for producing biological oil by biomass pyrolysis.