Carving-seizing-type core retainer and soil acquirer

Abstract

The invention provides a carving-seizing-type core retainer and a sampler for acquiring relatively-complete muddy soil samples. The carving-seizing-type core retainer includes a valve body, a valve seat, a plurality of carving blocks, a plurality of valve pieces and a carving ring. The valve body shows a cylindrical shape. A side wall of the valve body shows circumferential even distribution, andis provided with a plurality of first sliding slot holes extending along an axial direction of the valve body. The valve seat shows a cylindrical shape, and is fixedly disposed on an inner wall of thevalve body. A side wall of the valve seat is provided with a plurality of second sliding slot holes corresponding to the plurality of first sliding slot holes. The carving blocks are inserted into the first sliding slot holes and the second sliding slot holes, and form sliding connection with the valve body and the valve seat. The valve pieces are disposed at an inner side of the valve seat, andare respectively and correspondingly disposed at positions below the plurality of carving blocks. Lower end parts of the valve pieces are connected with an inner wall of the valve seat in a rotatablemanner. The carving ring is disposed at an outer wall of the valve body in a moving sleeving manner, and is fixedly connected with the carving blocks.

Description

technical field [0001] The invention relates to the technical field of engineering geological survey, in particular to a Cheka type core retainer and soil fetcher suitable for sampling mud and soil properties. Background technique [0002] In engineering geological survey, in order to understand the structure of each stratum level, technical means such as drilling and sampling are usually used for sampling, and the chemical composition and various physical indicators of the sample can be obtained through laboratory testing and testing of the soil sample, so a complete Soil core samples are an important indicator in reconnaissance operations. [0003] In engineering geological survey projects along rivers, seas, rivers, lakes and other environments, it is even more necessary to have a detailed understanding of the chemical composition of muddy soil layers. However, the current sampler has certain defects when sampling the muddy soil layer. The reason is that the muddy soil l...

AI Technical Summary

Problems solved by technology

However, the current sampler has certain defects when sampling the muddy soil layer. The reason is that the muddy soil layer has a large water content, soft texture, and is easy to liquefy. Under the interference of other unfavorable factors, the soil sample is easy to fall off from the sampler, resulting in a low sampling success rate

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