FIELD: cleaning of inner surface of industrial pipe-lines. SUBSTANCE: device has a hollow body separated by a stepped movable piston into inlet and positive chambers. The latters communicate with environment through discharge holes. A discharge duct is made in the cavity of the second stage on the side of the accumulating chamber. The cross-section area of the discharge duct exceeds the area of the accumulating chamber filling duct by so many times as the piston cross-section area exceeds the area of the end surface in the inlet chamber. EFFECT: enhanced reliability of operation, enhanced efficiency and capacity of cleaning. 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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SU1532797A1 |
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SU1622035A1 |
