Scraper blade type dredger

Abstract

The present invention discloses a scraper mud dredge. Said mud dredge includes the following components: upper machine frame, lower machine frame, endless conveying chain, driving shaft, driving chain wheels, supporting shaft, supporting chain wheels, scraper and mud conveying channel. Said invention also provides the connection mode of all the above-mentioned components.

Description

technical field [0001] The invention relates to a scraper dredger used for engineering dredging, deep water dredging, bottom mud dredging in polluted waters, and for lifting bottom mud in mud barges into stockyards. Background technique [0002] In polluted waters, since 80% of the pollutants will be deposited in the bottom mud, it is necessary to dredge the bottom mud containing a large amount of pollutants in these waters when treating the polluted waters. During the construction of water conservancy projects, in order to ensure the smooth flow of water channels and the depth of water areas, it is often necessary to carry out engineering dredging and deep water dredging on lake beds, river beds and other water bottoms. [0003] Traditional dredging equipment is mainly divided into two categories: the first category uses devices such as reamers, rake heads, bucket wheels or water guns to loosen the bottom mud into mud, then use pumps to suck the mud and send the mud to the ...

AI Technical Summary

Problems solved by technology

When using this type of equipment for dredging, due to the severe agitation of the bottom mud, the pollutants in the bottom mud diffuse into the water again, so the secondary water pollution is serious; in addition, the average mud content of the general mud does not exceed 20%. Mud needs to be transported five times the volume of the bottom mud, resulting in low dredging efficiency; at the same time, it takes up a lot of space to store the mud, and a series of problems will be brought about during the sedimentation, dehydration and solidification of the mud, such as a large number of polluted The remaining water pollutes the environment again, and the unsolidified mud causes pedestrians to enter and subside by mistake, etc., which further increases the cost of dredging

[0004] The second type is to use grab buckets, chain buckets, and buckets to lift the bottom mud into the mud barge and transport it to the storage yard. During the dredging and lifting process, a lot of overflow will be lost, forming a large-scale turbid area. , when unloading the bottom mud in the mud barge into the storage yard, the dredging filling method is generally used, that is, flushing with a water gun and pumping with a water pump, which will also cause secondary water pollution

[0006] (1) When the water is shallow, the water head pressure is small, and a vacuum pump needs to be added to complicate the equipment, and a lot of polluted sediment is in the shallow water area;

[0007] (2) It is only suitable for loose and thick bottom mud layer. The bottom mud must be able to block the suction port all the time in order to obtain high-concentration mud. In fact, it is difficult to always meet the requirements, and the surrounding water is easy to break through the containment and pour into the tank. , so that the mud concentration is greatly reduced;

[0008] (3) High energy consumption, the total efficiency of compressed air transmission is only 1 / 6~1 / 7 of that of electric transmission

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