FIELD: measurement technology; proportioning of powder-like explosive materials, working mixtures of powders on base of ammonium perchlorate in production of rocket propellants.
SUBSTANCE: proposed weigher includes above-weight bin, screw feeder, weight meter and cargo hoisting ladle placed in under-weight chute. Cargo hoisting ladle consists of taper bottom secured to weight meter by means of hollow rod and cylindrical shell connected with rod located inside hollow rod for vertical motion; under-weight chute is provided with cylindrical rim lowered concentrically inside shell at clearance 
to depth H = (8-12)
and above-weight bin has rectangular cross section increasing towards unloading due to mounting of front and rear walls at negative angle of inclination 
= (3-10) deg.; bin volume Vbin = (3-5)Vdose , where Vdose is volume of one dose.
EFFECT: enhanced safety, reliability and accuracy of proportioning.
2 dwg
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SU774840A1 |
