| 摘要 |
The invention relates to a flowmeter for regulating and monitoring the flow of sealing fluid to be conducted to a seal of a rotating shaft, the meter comprising a sealing fluid metering channel (3), a sealing fluid inlet (4) and a connection (5) towards the seal for regulating the flow of sealing fluid, a non-return valve (21) for preventing the sealing fluid from flowing back to the flowmeter, a regu-lating and monitoring mechanism (10, 12, 14), whereby the sealing fluid flows through the opening (13), and a cleaning means (17) which is movable by means of actuating means (16, 18). The non-return valve (21) is arranged as an extension of the metering channel (3) at the meter outlet (5) side end, co--axially with the metering channel, whereby the metering cone (10) is in me-chanical contact with the non-return valve (21), and thus it is also possible to clean the non-return valve with the cleaning means (17).
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