| 摘要 |
The powder analytical apparatus (10) of the invention includes a hopper (12) that is connected to a controllable agitator (36) by a separable link (42, 44, 48). The hopper (12) has an exit port (20) at its lower end that is at an acute angle to the axis (ß) of the hopper (12). A planar gate (22) is mounted parallel to the exit port (20) of the hopper (12) and is movable incrementally to allow powder to flow out of the hopper (12) into a bin (50) residing on a scale (52). The controllable agitator (36) is a vibrator device capable of variation of frequency and amplitude. Control of the vibrator (36) and the gate (22) position and input from the scale (52) are by means of a PLC (24). In a second embodiment, the exit port (20a) is formed perpendicular to the axis (ß) of the hopper (12) and the gate (22a) is conical to emulate the angular flow pattern of the first embodiment.
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