Ball valve type core sediment collector

Abstract

The invention relates to a ball valve type core sediment collector. A grip is T-shaped, the lower end of the grip is connected with an external casing and a sampling pipe, and the external casing is coaxial with the sampling pipe and sleeved outside the sampling pipe which is a circular pipe and has the cross section smaller than that of the external casing; the external casing has the same length as the sampling pipe, the other end of the external casing is connected with a wedge-shaped head which is hollow and communicated with the sampling pipe, the outer edge of the wedge-shaped head corresponds to the external casing, and the other end of the wedge-shaped head is saw-toothed; the wedge-shaped head is conically connected to the ends of the external casing and the sampling pipe, larger than the other saw-toothed end of the wedge-shaped head; the upper part of the sampling pipe, near the grip, is provided with a driving chain wheel, the axis of the driving chain wheel is superposed with the diameter of the sampling pipe, the lower part of the sampling pipe, near the wedge-shaped head, is provided with a ball valve, and a rotary shaft of the ball valve is parallel to the axis of the driving chain wheel and provided with a driven chain wheel; and the rotary shaft of the driving chain wheel is fixedly connected with a rotary handle, and the other end of the rotary handle penetrates through the external casing and the grip. The ball valve type core sediment collector is durable, convenient to operate on the sea, low in manufacture cost as well as high in visibility and practicality.

Description

technical field [0001] The invention belongs to the technical field of marine sediment collection, in particular to a ball valve type columnar sediment collector. Background technique [0002] At present, piston-type and gravity-type dredgers are commonly used in the collection of columnar sediments in marine ecological environment surveys at home and abroad. The structures of these two kinds of mud extractors are relatively complex, and the operation steps are relatively cumbersome. Moreover, the cost of manufacturing materials is relatively high, and metal materials are generally used, which makes the device too heavy and affects carrying and traveling. Due to the opacity of the pipe, the sampling process cannot be directly observed, which increases the difficulty of the sampling operation; at the same time, due to the gravity of the sediment sample and the friction of the particles during the sampling process, the locking device often cannot completely lock the sampling ...

AI Technical Summary

Problems solved by technology

The structures of these two kinds of mud extractors are relatively complex, and the operation steps are relatively cumbersome.

Moreover, the cost of production materials is relatively high, and metal materials are generally used, which makes the device too heavy and affects travel

Due to the opacity of the pipe, the sampling process cannot be directly observed, which increases the difficulty of the sampling operation; at the same time, due to the gravity of the sediment sample and the friction of the particles during the sampling process, the locking device often cannot completely lock the sampling tube. sample, resulting in part of the sediment sample leaking, affecting the integrity of the columnar sample, requiring repeated collections, thereby reducing the accuracy and timeliness of the sampling work

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