The soil treatment efficiency was greatly improved by changing the original soil repair step by step to one time repair.  The utility model has the advantages of high integration, small volume, light weight and convenient transportation operation, ensuring the safety of operation.  The safety screen is used for soil remediation, mainly for the pre-crushing and screening of contaminated soil and curing agents, as well as the mixing treatment of subsequent processes.  Flexible configuration according to the specific situation, mobile operation, simplify the process, save costs.

First, the application of screening bucket in soil remediation:

(1) Screening construction waste in broken polluted soil;
(2) For thermal analysis or leached soil remediation, a sieve can be used as a pretreatment, and fine soil with a diameter greater than 3cm can be screened.
(3) The soil can be mixed with chemicals and curing agents to reduce investment in other equipment.

Secondly, the type of contaminated soil treated by the screening bucket:

(1) Places that contain harmful substances or contaminated soil
(2) Contaminated soil left over from industrial sites (chemical and heavy metal pollution);
(3) Pollution caused by tailings generated during mining and smelting;
(4) Sludge or sea mud with high water content;
(5) Contaminated waste mixed with construction waste;  Solid waste is pre-screened, then chemicals are added and cured.

The moving bearing seat and a plurality of driven bearing seats arranged from top to bottom are symmetrically installed on both sides of the screen bucket body.  The bearing is installed in the moving bearing seat and the driven bearing seat.  The bearing has a rotating shaft through the bearing group, and the rotating shaft is connected with the hydraulic motor through the coupling.  Through the bearing housing.  The sprocket is mounted on the power bearing seat rotating shaft end of the screen bucket side, the roller shaft is pushed out from the driven bearing box, the roller chain is connected between the adjacent sprockets along the sprocket, and a plurality of convex blocks are fixed along the axis of the roller.  The number of convex blocks in each group is three, which are arranged on the same radial plane of the roller, and the positions of adjacent convex blocks are staggered.  The convex Angle on the drum is conducive to the crushing and screening of the soil, and the spraying method during unloading is conducive to the full contact reaction between the soil and the agent, and plays the performance of the repair material.

The screening bucket has the functions of screening, crushing, mixing, stabilizing and stirring.  It is widely used in soil remediation projects.  The utility model has the advantages of low investment cost, flexible and convenient use, and one screen bucket can realize multiple equipment functions.  It is an effective tool for soil remediation.

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