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    • 61. 发明专利
    • DRAIN DEVICE
    • JP2001317499A
    • 2001-11-16
    • JP2000134994
    • 2000-05-08
    • MAZDA EARTH TECHNOLOGIES CO LT
    • SHIBUKAWA TAKAONITANDA TSURUO
    • F42D5/00F04F5/26
    • PROBLEM TO BE SOLVED: To settle problems of restricting an application range due to being unable to externally discharge liquid in a recessed hole existing in a deep position of the ground by a single sucking-up means when a head distance of a pump is maximum about 10 m when using the sucking-up and being difficult to properly discharge the liquid by supplying pressurized gas in the recessed hole while surely sealing the recessed hole when externally discharging the liquid in this recessed hole by pressurizing the inside of the recessed hole by supplying the pressurized gas to the recessed hole. SOLUTION: A connecting part of a rear end part of an air supply pipe is connected to a pressurized air source. A high speed air flow blowing out downward from a tip part of the air supply pipe is reversed in the rising direction by a direction changing member in a state of inserting the tip part of the air supply pipe into the recessed hole. Water in the recessed hole is discharged by being accompanied by the high speed air flow rising from clearance between the air supply pipe and a lifting pipe.
    • 67. 发明专利
    • EJECTOR
    • JPS5540252A
    • 1980-03-21
    • JP11314578
    • 1978-09-13
    • KUBOTA LTD
    • NAGASAKI KATSUMIINOUE YOSHIHIRONAKADE OSAO
    • F04F5/26F04F5/36
    • PURPOSE:To improve the effiecincy of the suction of an ejector, by adding negative pressure generated by the rapid decrease of the volume of steam to negative pressure produced by steam injected. CONSTITUTION:When steam is injected into diffusers 22-24 from each steam injection nozzle 25a, 26a, 27a, negative pressure is generated in each chamber body 2-4, and air currents sucked containing a steam component are absorbed from a suction pipe 9. When the air currents sucked flow into the chamber body 2 at the lowest stage and pass through a condensation portion 10, the steam component is heat exchanged by cooling water from nozzles 15 and condensed, and condensation and cooling water are discharged from a drain pipe 18. Thus, negative pressure in the chamber body 2 at the lowest stage increases and sucking force augments by the condensation of the steam component and the sudden decrease of the volume of steam. The air currents sucked reaching upper space 16a after passing through the condensation portion 10 flow into the lower space 16b of the chamber body 3 at the intermediate stage with steam from the nozzles 25a, and pass through a condensation portion 11 in the same manner as mentioned above.