Sludge conveying system

Abstract

The invention discloses a sludge conveying system, which comprises a grab dredger, an auxiliary conveying mechanism and a main conveying mechanism, wherein the grab dredger works on water, the auxiliary conveying mechanism is arranged on the grab dredger, the main conveying mechanism works in a backfilling region, the auxiliary conveying mechanism consists of a hopper, a spiral conveyer and an auxiliary belt conveyor, a feeding opening of the hopper receives sludge grabbed by a grab of the grab dredger, a discharging opening of the hopper is connected with a feeding opening of the spiral conveyer, a discharging opening of the spiral conveyer is positioned right above a belt of the auxiliary belt conveyor, the tail end of the auxiliary belt conveyor is hung outside the grab dredger, the main conveying mechanism consists of a plurality of flat bottom floating bodies, a steel truss and a main belt conveyor, the flat bottom floating bodies are flatly placed on the backfilling region, the steel truss is erected on the flat bottom floating bodies, the main belt conveyor is arranged on the steel truss, the tail end of the auxiliary belt conveyor is positioned right above the belt of the main belt conveyor. The sludge conveying system has the advantages that the automation degree is high, the conveying efficiency can reach 300 to 600m<3> per hour, and the conveying cost is low.

Description

technical field [0001] The invention relates to a conveying machine, in particular to a sludge conveying system, which is suitable for soil conveying in large water conservancy projects. Background technique [0002] In municipal and water conservancy projects, backfilling earthwork is a major technical difficulty in tidal flats, swamps, wetlands and other places where deep silty clay layers are deposited. Conventional land and water equipment are difficult to construct, and the cutter-suction dredging equipment, truss-type tidal flat embankment machine, and piston-type earth-moving ship have been developed for backfilling and earth-moving machinery. [0003] When the cutter-suction blow-fill equipment is working, first use the reamer to add the sludge into the water to fully mix the sludge and water, and then use the suction pump to suck up the diluted sludge. This cutter-suction blow-fill equipment has the following problems : 1) Due to the need to use the reamer to add ...

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Problems solved by technology

[0003] When the cutter-suction blow-fill equipment is working, first use the reamer to add the sludge into the water to fully mix the sludge and water, and then use the suction pump to suck up the diluted sludge. This cutter-suction blow-fill equipment has the following problems : 1) Due to the need to use the reamer to add the sludge into the water, and the reamer is under great pressure, the energy loss is serious; 2) The work of the reamer has great damage to the surrounding environment of the working area; 3) Since the suction is diluted Generally, the sludge content is only 15% to 25%, so the construction efficiency is very low; 4) The natural consolidation time of the diluted sludge sucked up is long; 5) Although the water in the diluted sludge sucked up Generally, it will flow off automatically in the natural environment, but the strength of the silt after dehydration is still not as strong as that of the original silt, resulting in poor bearing capacity of the backfill area formed by using this silt

The production cost and maintenance cost of the piston type earth moving ship are very high

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