| 摘要 |
PURPOSE:To allow a silo even in an irregular configuration to perform payoff from its every payoff hole properly by calculating the number of repetition in paying off from each payoff hole of the silo, which shall be proportional to the capacity of the silo portion situated over the payoff hole in question, and discharging from the payoff hole repeatedly according to the determined frequency. CONSTITUTION:Payoff holes of a silo in irregular configuration 1 are equipped with solenoid valves 2-4, which are opened and closed according to electric signals given from a control board 5 in a specific sequence. Now, for example the count for No. 1 payoff hole is previously set by a repetitive payoff counter 7, and a relay 8 is actuated by a payoff demand signal 10, and then the payoff solenoid valve 2 is opened for a certain specific period of time by the contact 11 as well as a count signal 12 is given to the counter 7. Every time a demand signal 10 is given, the above-mentioned cycle of operation is repeated, and its frequency is accumulated on the counter 7. When the number of accumulated count signals 12 attains the preset value, a relay 9 is actuated to disconnect its contact 13, and now payoff from No.1 payoff hole is finished. This arrangement provides a specially excellent effect when applied to fuel transportation in a ship using coal as its fuel from the coal storage to the boiler. |
