Abstract:
The invention relates to a color sorting apparatus for granular objects in which detecting members (11, 11') for detecting acceptable objects and unacceptable objects respectively include light emitting members (9, 9; 9', 9') to send light to a sorting path (A), background light members (10; 10') to provide a reference amount of light, and light receiving members (8; 8') for receiving light coming from the objects in the sorting path and from the background light members; a valve actuating member (40) is responsive to the light receiving members for producing an ejection signal for unacceptable objects; ejection members (12, 13) are responsive to the valve actuating members for ejecting unacceptable objects; and adjusting members (19, 19) are responsive to the light receiving members for automatically adjusting the amount of light emitted from the background light members. The background light members (10, 10') include light sources (31, 31') which are adjusted by the adjusting members (19, 19) such that there is substantially no difference between the amount of light received by the light receiving members in the case where no objects exist in the sorting path and the amount of light in the case where acceptable objects exist therein even where the color tone of the acceptable objects is varied while in operation.
Abstract:
A sorter for grains, pulses and the like having a perforated sorting plate mounted on a frame and both longitudinally and laterally inclined with respect to the horizontal plane and adapted to be vibrated in the longitudinal direction while being intermittently lifted toward the upper side. The perforated sorting plate overlies an air chamber into which pressurized air is introduced by a blower through an air duct. The perforated sorting plate is provided with a corrugated upper surface to define a multiplicity of ribs oriented in the direction perpendicular to the direction of vibration of the sorting plate and in parallel rows at a pitch not less than the size of the material to be sorted. A set of discharge openings for receiving the sorted material is provided at the lower end of the perforated sorting plate where the ribs terminate. Auxiliary air passages communicating with the space above the sorting plate are provided to permit removal of dust and other granular material of lower specific gravity than the grains being sorted.
Abstract:
Disclosed is an improvement in a pressure plate adjusting device for grain whitening apparatus which is capable of automatically and precisely adjusting the pressure of a pressure plate disposed at a rice outlet of a whitening chamber. The automatic adjustment has been made possible by the provision of reversible electric motor mounted on one end wall of a casing enclosing a pressure control screw shaft, a weight mounted on said screw shaft and a guide rod for guiding the movement of said weight, and a control unit producing a control signal having relation to the conditions of whitening action of grains within the whitening chamber and controlling the direction and the amount of rotation of said motor.
Abstract:
A photoelectric sorting device of a color sorting apparatus adapted to sort grains according to their colors. The photoelectric sorting device includes a pair of photoelectric chambers 9, 10 disposed within a grain sorting chamber 12 located under a grain chute 3 of the sorting apparatus, in such a manner that the photoelectric chambers 9, 10 opposes to each other across the flux 4 of flow of the grains coming down from the chute. Each of the photoelectric chambers 9, 10 is shielded from the grain sorting chamber by means of a transparent window plate 11 and accommodates a photoelectric detector 5, 6, 15, 17; 7, 8, 16, 18. At least one of the photoelectric chambers 9, 10 is rotatably mounted on the frame of the particle sorting chamber 12 to facilitate the cleaning of the transparent window plates 11.
Abstract:
A downward-flow trough angle adjusting device for a color discriminating machine having a downward-flow trough mounting device for detachably mounting the trough, the device being secured to the upper surface of a frame defining a photoelectric discriminating chamber to provide a unitary structure. The photoelectric discriminating chamber frame is connected at one side to a machine frame for pivotal movement while being movably supported at the other side by the machine frame through a threaded shaft-nut assembly. Thus, as the photoelectric chamber frame is vertically moved at the other end by actuating the threaded shaft-nut assembly to adjust the angle of inclination of the downward-flow trough, the photoelectric discriminating chamber frame also moves together with the downward-flow trough, thereby enabling the downward-flow trough to be correctly positioned at all times with respect to a collecting tube in the photoelectric discriminating chamber for receiving the granular material of interest from which granular materials of colors distinct from that of the granular material of interest have been separated by electrophotographic color discrimination.
Abstract:
Apparatus is disclosed for polishing rice grains for generating super luster on rice grain surfaces which comprises means for grind-polishing rice grains from unpolished rice grains into intermediately polished rice grains whereby the yield of said intermediately polished rice grains from said unpolished rice grains is maintained equal to or not less than approximately 94%. The present invention also includes structure for feeding 2-50 kg of water per hour and 12-90 m.sup.3 air per hour to intermediately polished rice grains that are flowing at a rate of one ton per hour whereby moisture of 0.1-2.0 weight percent to the rice grains, weight is absorbed and stuck onto surfaces of the rice grains during friction-polishing. The disclosed rice polishing apparatus includes a grinding-type polishing machine provided with grinding type polishing rolls and a humidified friction-type polishing machine provided with friction type polishing rolls and humidifying device.
Abstract:
A particle color discriminating apparatus including a vibration feeder for feeding particles to be discriminated, a shooter for causing the particles from the feeder to flow downwardly, photoelectric detecting means located in the vicinity of a path of flow of the particles in a predetermined locus, an air ejector arranged beneath the photoelectric detecting means and control means for controlling the actuation of the air ejector in accordance with an output signal of the photosensitive detector is provided with an automatic control device operative to control the amount of particles supplied by the vibration feeder in accordance with changes in the proportion of particles distinct in color from the particles of interest in the particles supplied.
Abstract:
An induction motor including a single rotor formed in one-piece and first and second stators disposed side by side has a phase changing device for varying the phase difference between the rotational magnetic field generated by the first stator and that generated by the second stator. The phase changing device comprises a first-connection changing switch for making the interconnection of respective stator windings of the stators the first series delta-connection in which the phase difference is 0.degree. when it is in its closed-state and a second-connection changing switch for making the respective stator windings the second series data-connection in which the phase difference is 120.degree. when it is in its closed-state. When both the first- and second-connection changing switches are closed, the interconnection of the stator windings becomes a parallel Y (or star)-connection in which the phase difference produced is 60.degree.. During the motor operation, at least one of the first-switch and the second-switch is always kept in its closed-state. The motor exhibits three different torque curves suitable for starting operation, an intermediate speed operation and normal or steady-state operation by the switching operation of the first- and second-switches.
Abstract:
A color sorting apparatus for granular objects comprises a plurality of sorting units arranged in parallel relation to each other. Detecting positions of the respective sorting units are spaced from each other in a horizontal plane. Each sorting unit includes a substantially vertically extending, elongated tubular guide member for guiding the granular objects so as to be moved along a predetermined path passing through the detecting position, three detectors disposed at the detecting position at angular intervals of substantially 120 degrees around the predetermined path, and a deflector operative in response to a signal from at least one of the detectors representative of undesirable granular objects for deflecting the same out of the predetermined path. The arrangement of the three detectors of one of each or a pair of adjacent sorting units is such that the arrangement becomes identical with an arrangement of the three detectors of the other sorting unit, when the three detectors of the one sorting unit is turned substantially 180 degrees around the predetermined path of the one sorting unit.
Abstract:
In an apparatus for humidifying rice grains, a humidifying vessel has defined therewithin a substantially closed space and has a rice supply port and a rice discharge port. Rice grains are supplied into the humidifying vessel through the supply port, while gas is substantially prevented from escaping from the space within the humidifying vessel through the supply port. Rice grains are discharged from the humidifying vessel through the discharge port, while the gas is substantially prevented from escaping from the space within the humidifying vessel through the discharge port. Gas is forcibly delivered into the humidifying vessel to pressurize the space therewithin. Moisture is added to the rice grains within the pressurized space within the humidifying vessel. The moisture is added to the rice grains within the substantially closed space and, simultaneously, the moisture added to each rice grain is penetrated into an interior of the rice grain under pressure.