| 摘要 |
An installation for the dosing of a powder polymer having a particle size in the range from 100 to 500 micrometers intended to feed a blender (11) in hydraulic fracturing operations, successively including: - a powder polymer supply, from a pressurized tilting truck (1) or from big bags emptied by pneumatic conveying, - means for transporting the powder polymer fed by a compressor (3), and provided with a polymer transportation check valve (4), - a hopper (5) for receiving the powder polymer having a high level (6) and a low level (6), the hopper being equipped with a pulse jet cleaning dust filter, as well as with means for controlling the check valve and the compressor according to the high and low levels, - a screw feeder (7) for dosing the powder polymer, positioned at the lower end of the hopper (5), the screw being equipped with a variable-speed motor capable of being remotely controlled. |
