Water bottom sludge sampling device driven by two positioning slide blocks

Abstract

A double-positioning slider-driven underwater sludge sampling device includes a power mechanism, a left and right side positioning mechanism, a bottom positioning mechanism and a bucket mechanism. The left and right side positioning mechanisms are positioned by the guide grooves to move vertically, the scissors are controlled by the screw rod and the spring between the two ends, and the bottom positioning mechanism positions the bottom of the device. The device moves the positioned screw rod up and down through the spring force and the pulling force of the pulling rope, and drives the movement of the two scissors, so that the bucket can be opened or closed to realize the sampling of the bottom sludge. The device uses mechanical methods to replace manual operation, reduces labor, and can avoid the interference of water flow at the bottom of the water. Through the setting of the inner spring of the scissors, the bucket can be automatically opened when it sinks, and closed by overcoming the elastic force when it is pulled up. The operation is simple and the structure is exquisite. .

Description

technical field [0001] The invention relates to a sampling device, in particular to a bottom mud sampling device driven by double positioning sliders, which is used for sampling in environmental change research and environmental pollution detection of shallow water areas such as lakes or reservoirs. Background technique [0002] At present, the samplers for obtaining shallow muddy sediments in lakes, reservoirs and other waters include sampling tools such as grab type, box type, gravity type, piston type and freezing type. The samples obtained by the grab type and box type samplers are easily disturbed. The sampling tools such as gravity type, piston type and freezing type are affected by the water flow during sampling, the work is not stable, the sealing effect is not good, and the sample is lifted. During the process, it is easy to drop, and the sampling device cannot be fixed on the mud layer. Existing sampling devices cannot well meet the requirements of obtaining silty...

AI Technical Summary

Problems solved by technology

The samples obtained by the grab type and box type samplers are easily disturbed. The sampling tools such as gravity type, piston type and freezing type are affected by the water flow during sampling, the work is not stable, the sealing effect is not good, and the sample is lifted. It is easy to drop during the process, and the sampling device cannot be fixed on the mud layer, etc.

Existing sampling devices cannot well meet the requirements of obtaining silty undisturbed sediments in lakes and reservoirs. Therefore, it is necessary to develop a simple structure, practical and efficient, simple and fast assembly and operation, and a high sampling success rate. The sample obtained contains interfacial water, the original structure remains intact, no disturbance, and a high-quality bottom mud sampling device

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