| 摘要 |
System for adjusting the flow rate of the air admitted into a vibratory turbine device, especially a scale remover, characterised in that it consists of an annular slide valve 9 housed in an annular groove formed in the cylindrical face of the body of the instrument between a compressed air inlet tube 4 and an admission tube 5 to the turbine, the said annular slide valve having a bevelled profile 10, so that, by pivoting in its housing, this bevel uncovers a more or less significant cross-section of the passage from one tube to the other. <IMAGE>
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