Sludge and sludge soil sample collecting and sampling device

Abstract

The invention discloses a sludge and sludge soil sample collecting and sampling device. The device comprises a sampling cylinder formed by fastening two semicircles; the lower end of the sampling cylinder is provided with a lower external thread to be connected with an annular sampler bottom edge or to be in threaded connection with the annular sampler bottom edge through a strain gauge mounting cylinder in threaded connection; the upper end of the sampling cylinder is provided with an upper external thread to be in threaded connection with a connecting cylinder; the upper end of the connecting cylinder is in threaded connection with an exhaust device internally provided with a piston rod and provided with an exhaust hole in a side wall; a coupling for connecting a driving device is arranged at the upper end of the exhaust device; a conical piston body at the lower end of the piston rod is located at an opening in the bottom of the exhaust device; and a matched conical surface is formed at the opening in the bottom of the exhaust device. According to the device, a commonly used small drilling machine can be used as a driving force, and sampling can be carried out in a relatively shallow sludge area by manual driving; and an original sampling mode is changed into a pure static pressure mode from a rotary static pressure mode, so that primary disturbance is reduced.

Description

technical field [0001] The invention relates to the technical field of surveying, in particular to a sampling device for collecting and sampling mud and muddy soil samples. Background technique [0002] In the field of engineering investigation and geotechnical engineering investigation technology, the most direct investigation technical method for high water content and high consistency soils such as silt and silt is to carry out various engineering physical and mechanical analyzes and tests after drilling and sampling. In order to better obtain undisturbed soil samples of silt and silty soil, it has become an important requirement in the fields of engineering and environmental protection. Traditional silt soil sampling is mainly carried out by means of drilling rig rotation to drive the sampler. This method has the following disadvantages: [0003] 1. Existing soil sample extractors are designed for non-silty soil samples. During the soil extraction process, a drilling ri...

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