Soil constant-volume sampling device

Abstract

The invention provides a soil constant-volume sampling device comprising a cylinder body in which a cavity is arranged. The soil constant-volume sampling device is characterized in that a piston push rod provided with a piston plate at the bottom and a handle at the top is arranged in the cavity of the cylinder body; the lower part of the cylinder body is movably connected with a drill provided with saw teeth at the end part; a vertical groove extending to the wall of the drill is arranged on the wall of the cylinder body; a fixed bolt is arranged in the vertical groove; a constant-volume bayonet is arranged at the lower end of the cylinder body; and a constant-volume chuck is arranged in the constant-volume bayonet along the section of the cylinder body. A sampling cylinder can be conveniently pressed into soil, and an obstruction can be cut off and smashed through the drill at the lower end of the cylinder body; soil samples are filled in the cavity of the cylinder body while the sampling depth is reached; after being taken out, the soil samples can be pushed out of the cylinder through the piston push rod; and constant-volume soil with different depths can be intercepted through the constant-volume chuck in the constant-volume bayonet without damaging the soil samples. The soil constant-volume sampling device has the characteristics of simple structure, accurate sampling volume, little damage to a sample area and the like, and is convenient to operate.

Description

Technical field [0001] The invention relates to a sampling device, in particular to a soil constant volume sampling device, belonging to the technical field of sample collection devices. Background technique [0002] In natural science research, it is necessary to sample and collect soil, atmosphere, water and other substances, and then move the samples to the laboratory for analysis and testing. Both air and water are relatively easy to collect, and only simple equipment is needed to collect them. For soil, how to collect soil samples completely has always been a very difficult task. Most of the existing technology uses intubation to collect the soil. Due to the special physical properties of the soil and the unreasonable structure of the intubation, it is often difficult to intubate due to the hard soil. Even after the soil is inserted, it will be caused by rocks or plants in the soil. The obstruction of the rhizomes caused insufficient depth to obtain valid samples. In addi...

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Problems solved by technology

[0003] In order to solve the problems that the existing soil collection device is difficult to intubate and reach the expected depth due to the unreasonable structure of the existing soil collection device, and the collected soil is easily damaged or incomplete, and cannot be accurately constant volume sampling, etc., the present invention provides a soil Constant volume sampling device

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