Suction Pump
1958 - 1963

Suiage Pompu
[Suction Pump]
21.2 x 30.3 cm Ink Painting

Text at the Bottom Right
Water in the pool at the pit bottom was sucked up by an injector (also called a zetto i.e. jet pump). For that purpose, water temporarily stored in a box-type sump, which was installed halfway in the slope, was partly sent back from the forcing pump to the injector through a thin pipe diverging from the forcing pipe. It was because a pump could be under water if it was installed in a place near the pit bottom. In brief, approximately 10 cubic meters of water was discharged, including 5 cubic meters of water sent to the jet pump. If the suction pipe was directly put in the coalface, it was sometimes choked with fine dust, causing the pump to fail.

Text at the Top Left
Electricity was not used at very deep pit bottoms because there were fears of gas explosions. The pumps used there were Worthington Steam Sinking Pumps. Auger drills were also moved by compressed air. They exhausted air from their vents and were also useful for air ventilation.

Words under the Thin Pipe
oshiage yori kuru paipu: pipe diverging from the forcing pipe

Words under the Curved Thick Pipe
pompu suikan: suction pipe of the forcing pump


Translation Assisted by Mr. Nathan Johndro

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