Semi pipe closing sampler

Abstract

The invention discloses a semi pipe closing sampler, which comprises an outer tube, an inner tube and a slow press-in mechanism, wherein the slow press-in mechanism consists of a threaded rod, a handle, a guide plate, a support plate and a press plate; each of the outer tube and the inner tube is formed by two first semi pipe bodies and second semi pipe bodies through butt joint; the two ends of the second semi pipe bodies in the inner tube outwards extend to form a clamp strip; the two ends of the first semi pipe bodies in the outer tube inwards extend to form a fixed strip; the middle part of the inner side inwards extends to form a guide rail strip; upper and lower position limiting grooves are formed in the upper parts of the fixed strip and the guide rail strip; the two ends of the fixed strip are symmetrically provided with through holes; the guide rail strip is provided with a clamp groove extending to the lower end surface; the inner end surfaces of the fixed strip and the guide rail strip are arc-shaped surfaces. The outer tube and the inner tube are respectively made into a semi closed structure; a water flushing chamber arranged between the outer tube and the inner tube can be conveniently cleaned; the installation of the slow press-in mechanism and the dismounting of each component are convenient; the production and the preparation are easy; the operation is simple and convenient; the labor is saved; the soil sample original state degree is high; the soil sample perturbance is small.

Description

Technical field [0001] The invention relates to the technical field of soil drilling samples, in particular to a semi-combined tube sampler. Background technique [0002] Sampling of undisturbed soil is a basic task in engineering geological survey, environmental engineering, agricultural engineering, water conservancy and hydropower engineering. Undisturbed soil refers to the natural structure of the sample that should be maintained during the sampling process, that is, the physical, mechanical, and chemical properties of the soil sample remain unchanged during the sampling process. If the natural structure of the sample is damaged, it is called "disturbance type". Disturbance of soil samples is not allowed or should be avoided in many fields such as engineering geological survey and experimental research. [0003] Soil extractor, also known as soil sampler, is to study the physical, mechanical, and chemical properties of the soil in the corresponding soil layer by analyzing the...

AI Technical Summary

Problems solved by technology

The ring knife method needs to excavate the profile pit first, which has the disadvantages of complex operation, high labor intensity, and low soil extraction efficiency; although the original soil extraction casing method can obtain soil samples from multiple soil layers at one time, the soil extraction efficiency is higher , but there are shortcomings such as difficulty in pushing out the soil sample, low precision of soil sample separation, and large error

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