Piston type soil sampler

Abstract

The invention relates to a piston type soil sampler which comprises a handle (1), a support rod (2), a thrust ring (3), a connecting rod (4), a piston (5), a sampling tube (6) and a fixed pin (7). The piston type soil sampler is characterized in that the upper end of the support rod (2) is connected with the handle (1) in a threaded manner while the lower end of the same is connected with the upper end of the sampling tube (6) in a threaded manner, the sampling tube (6) is a hollow steel tube; from the 2.5cm position to the 50cm position above the bottom of the sampling tube (6), a steel tube wall surface area of 2 / 5 of the sampling tube (6) is opened; the piston (5) is mounted in the sampling tube (6) via the opening position of the sampling tube (6), and the thrust ring (3) is sleeved outside the sampling tube (6) and connected with the piston (5) via the connecting rod (4). By utilizing the thrust ring (3) to push the piston (5), a soil column in the sampling tube (6) can be thrust out conveniently and safely, and the piston type soil sampler is simple in structure, convenient to use and carry, economical and practical.

Description

Technical field: [0001] The invention relates to a piston type soil sampler, which belongs to the technical field of crop planting and cultivation. Background technique: [0002] Field experiment and soil science research is a common method of agricultural basic and applied research. In field experiments, in order to grasp the soil characteristics of the experimental site, soil sampling is required. That is, use a special soil sampler to punch holes at predetermined locations to take out soil samples. The "T"-shaped soil sampler is a commonly used soil sampler at present. Its upper end is two handles, and the middle handle sampling tube is connected to the bottom. The middle handle is made of a hollow steel pipe. The lower 2cm is closed. The steel pipe wall of the upper edge of 2cm and 2cm is all acute-angled, and the steel pipe wall of more than 2cm to 50cm has 2 / 5 openings. When sampling, the operator presses down vertically with the handle and turns it at the same time...

AI Technical Summary

Problems solved by technology

However, the soil at the bottom 2 cm of the closed sampling tube remains in the sampling tube and requires other aids to remove it

Since the two ends of the exposed part of the steel pipe at the bottom 2cm of the sampling pipe are both acute angles, and the soil here bears the greatest pressure and the soil sample is the most solid, it is difficult to take it out, and the operator will be injured if he is a little careless. Bring a lot of inconvenience to the actual work

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