| 摘要 |
Metering of pulverulent products. The device comprises: - a tubular pipe 10 open at its ends and extending a fitting body 2 delimiting a cavity 7 communicating with a pressurisation/depressurisation circuit 17; - a piston 8 guided through the cavity and extended by a tubular rod 9 engaged with sliding in the tube for which it forms a core closed at its end by a porous plug 12 and capable of delimiting a metering chamber 11 with variable volume; - means 20 for actuating the piston in straight-line travel; - and means 18 for cyclically controlling the operation of the pressurisation/depressurisation circuit. Application to the production of pyrotechnic cartridges. <IMAGE>
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