Rotary-cutting column type deposit sampler

Abstract

The invention discloses a rotary columnar deposit sampler, comprising a sampling tube, a rotary cutting system and a supporting board. The sampling tube comprises a positive half-tube, a matching half-tube, a top cover, a mouth piece and a manual rod; the sampling tube comprises a positive half-tube and a matching half-tube, and can be switched on or off with a hinge by the bolt and nut arranged on both axial sides; the mouth piece comprises a half right-circular conical cavity and a triangular plate, the bottom side thereof is fixedly connected with the bottom side of the matching half-tube, and the flank is blocked by a triangular plate; the rotary cutting system comprises a rotary cutting blade, a bushing, a rotary rod, a rotary-cutting handle and a stop clipping-hook, the rotary cutting blade is in semicircle shape and vertically fixed on the rotary rod by equal distances, the rotary rod is fixed on the axial line of the positive half-tube and can make horizontal circumrotation; the supporting board comprises a plurality of rectangular clapboards fixed on the matching half-tube by equal intervals, and the gap between two neighboring flat-plates can ensure free rotary cutting movements of the rotary cutting blade. The sampler adopts a rotary cutting manner to stratify the deposit, the structure is simple, the cost is low, the operation is convenient, and the disassembly and maintenance are easy, and is light to carry.

Description

technical field [0001] The invention relates to a sediment collection technology near the river bank and shallow beach, in particular to a rotary-cut columnar sediment sampler. Background technique [0002] Sediment is an important part of water bodies such as oceans, lakes, and rivers. It can exchange materials with the overlying water body through various channels such as precipitation-dissolution, adsorption-desorption, etc. Benthic organisms play an important role, so sediment monitoring is an important part of water environmental investigation and scientific research. Sediment sample collection is a necessary prerequisite for sediment monitoring. At present, the main sediment samplers at home and abroad are divided into two types: grab type and columnar type: the grab type sampler is simple in structure and easy to operate, but it is only suitable for collecting surface 20cm The left and right samples, and the large disturbance to the sediment sample, poor sealing, eas...

AI Technical Summary

Problems solved by technology

Sediment sample collection is a necessary prerequisite for sediment monitoring. At present, the main sediment samplers at home and abroad are divided into two types: grab type and columnar type: the grab type sampler is simple in structure and easy to operate, but it is only suitable for collecting surface 20cm The left and right samples, and the large disturbance to the sediment sample, poor sealing, easy to cause sample loss and low collection efficiency, are usually only used for the collection of surface mixed sediment samples; the columnar sampler is inserted vertically into the sediment Obtain undisturbed columnar sediment samples that are well representative

Columnar samplers mainly include gravity samplers, gravity piston samplers, and vibrating piston samplers. Most of the currently used columnar samplers are complex in structure, large in size and heavy, and sometimes need to be equipped with large platforms, electric winches and lifting devices. etc., the operation is inconvenient and expensive, so the promotion and application are limited

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