I. Introduction

The device is designed for pipe jacking, small shield, wall, across the water department, Wall mud construction, bridge foundations, underground tunnel shield construction and non-construction excavation used in the development of a solid mud purification liquid separation device. It can effectively control the quality of construction with Whey mud, mud solid particles in the solid-liquid separation, the solid dry stacking transport, mud recycling, improve Piles of rates and reduce the amount of bentonite mud to reduce costs. Achieve environmental transport and waste mud Whey emissions to meet the environmental requirements of the construction site. .

II, characteristics

The system uses mud stepwise (3 to 4) purification process, according to Slurry pipe jacking process, the amount of mud circulation size, system capacity has 60 ~ 300m3 / different specifications;

A vibrating sieve, cyclone, centrifuge (filter) devices such as mud particles in the solid phase pellets descending, descending proportion mud processing;

First level: the use of linear single or double shaker for circulating mud pretreated to remove mud 0.5 ~ 2mm or more solid particles;

Second stage: The Cyclone (250-350 cyclone cone type aspect ratio) at the slurry desanding cyclone separation, flow into the bottom of the cyclone discharge dry sieve drying yard to dry stack;

The third stage: The Cyclone (75-125 cyclone cone type aspect ratio) at the slurry in addition to mud cyclone separation, flow into the bottom of the cyclone sieve drying drying discharged after treatment to dry stacking yard;

Fourth level: the use of large capacity centrifuge (various types of filter): mud weight after using a large amount of processing efficiency inverter centrifuge (filter) process can be reduced to 1.02 ~ 1.15g / cm3, effectively maintain the mud effective recycling system used to reduce or eliminate the occurrence of feeling abandoned pulp portion.