Switch for automatically discharging and resisting scouring

Abstract

The invention discloses a switch device, in particular to a switch device for automatically discharging and resisting scouring. A switch for automatically discharging and resisting scouring comprises a piston switch, a discharging hole, a discharging cover and an adjustment ring, wherein the piston switch consists of a piston guide rod, a piston body and a sealing gasket; the piston guide rod passes through a piston guide rod hole at the top end of the discharging cover; a water flow pressing hole is formed at the top end of the discharging cover around the piston guide rod hole; the piston switch is connected with the inner wall of the discharging cover in a sealing manner and can move along the inner wall of the discharging cover; the lower end of the discharging cover is opened so as to be connected with a cylindrical sampler rod through a screw thread; and the lower end of the discharging cover is provided with the adjustment ring used for adjusting a connecting depth. The switch for automatically discharging and resisting scouring has the advantages of enabling a cylindrical sampler to automatically discharge during downward sampling and avoiding influence water pressure caused by no discharging on a sampling depth. The switch can be widely used in ocean research and collection industries.

Description

technical field [0001] The invention relates to a switch device, in particular to a switch device for automatic discharge and anti-scouring. technical background [0002] Collecting seabed sediments, measuring the physical characteristics of seabed sediments such as acoustic transmission and geomechanics, and analyzing the geological, biological, chemical and ecological changes of seabed sediments are important contents of marine research, and effectively obtain undisturbed sediments Samples, providing reliable analysis and testing of undisturbed samples for scientific research, put forward higher requirements for sediment collection devices. [0003] At present, the collection devices with a sediment sampling thickness of more than 1M all use gravity columnar sediment samplers. Usually, the bottom of this type of sampler is sealed with flowers, and the upper end is open. The advantage is that due to the smooth leakage during the collection stage, The sediment can enter the...

AI Technical Summary

Problems solved by technology

[0003] At present, the collection devices with a sediment sampling thickness of more than 1M all use gravity columnar sediment samplers. Usually, the bottom of this type of sampler is sealed with flowers, and the upper end is open. The advantage is that due to the smooth leakage during the collection stage, The sediment can enter the collection tube smoothly, but when the sampling is completed and the sampler is lifted up, the generated water flow will wash away the surface sediment sample in the sample tube, resulting in the acquired sample no longer maintaining its original state, and the sample cannot meet the requirements of scientific research and The need for engineering testing

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