HYDRAULIC TECHNIQUE OF TRANSPORTATION OF FINE GRAINED MATERIALS ALONG PIPES Russian patent published in 2008 - IPC B65G53/30 B65G53/52 

FIELD: transportation.

SUBSTANCE: technique is based on feeding into the pipe, concentrated suspension of solid particles in a liquid, supplementary supply of the same liquid carrier to the suspension on inlet sections of the pipe, and then later, its tapping off from outlet sections of the pipe. According to the invention, the suspension is transported in the form of a dense layer, with concentration of solid particles calculated using the formula: C_s = (0.8 ÷ 0.98) C _r, where C_s is the volume concentration of solid particles in the supplied suspension in relative units; C_r is the volume concentration in relative units, of solid particles in the suspension, at which there is clogging of material. Input and output of the liquid carrier is done repeatedly along the pipe. Corresponding pairs of the inlet and outlet sections of the pipe are displaced from each other by distance L₁, calculated using the formula: L₁ = (2.5 ÷ 8) D, while adjacent inlet and outlet sections are at a distance L₂ from each other, calculated using formula: L₂ = (1.5 ÷ 3) D, where D is the inner diameter of the pipe. In case of slanting or curved pipes, the liquid is supplied and tapped off on lower points of the cross-section of the inlet and outlet sections of the pipe.

EFFECT: increased efficiency and reliability of transportation of materials.

3 cl, 3 dwg, 2 ex