Water body sampling device

Abstract

The invention relates to a sampling device and aims to overcome the technical problems existing in application process of the conventional applied deep water sampling barrel. The water body sampling device provided by the invention comprises a sampling cup, wherein a circular through hole is formed in the bottom of the sampling cup; a cover plate is arranged on the through hole; the cover plate is hinged to the bottom of the barrel body in an elastic manner; the water body sampling device is characterized by further comprising a sampling cup holder; a traction rope is fixed at the top of the sampling cup holder; a magnetic induction sleeve capable of slipping freely is arranged on the traction rope; a plurality of Hall sensors are sequentially arranged in the traction rope in accordance with setting distance; all the Hall sensors are electrically connected with a controller at the tail end of the traction rope; a magnetic induction coil is arranged at the bottom of the sampling cup holder; a magnetic column is arranged at the back side of the cover plate; when the cover plate is turned over, the magnetic column directly faces the top end of the magnetic induction coil; the material density of the sampling cup and the sampling cup holder is greater than the density of water. The water body sampling device can be widely applied in the water sample collecting operation in the environmental protection and vector control departments.

Description

[0001] technical field [0002] The invention relates to a sampling device, in particular to a water body sampling device. Background technique [0003] Water sample collection is the most common work in environmental protection, epidemic prevention and other departments. At present, water sample collection is mostly carried out through sampling buckets or sampling cups. When collecting water samples with currently used sampling barrels or sampling cups, it is relatively easy to operate when collecting surface water samples, and direct sampling can be carried out in a hand-held manner. But when collecting some water body samples that the human body cannot touch the water surface, such as water body samples in deep wells, it is often necessary to put the sampling bucket or sampling cup into the water body for sampling by means of a pull rope. According to the epidemic prevention standard, the sampling of drinking well water needs to take out the water body at a depth of 2-5 ...

AI Technical Summary

Problems solved by technology

But this deep-water sampling barrel has the following technical problems: 1. The opening and closing of the cover plate at the bottom of the barrel body is controlled by the hook at the top of the pull rod, and the clutch of the hook and the bung crosspiece is controlled by a decoupling rope. It is easy to get entangled when the pull rope is lowered together. Pulling the decoupling rope after the entanglement is easy to cause decoupling failure, which directly causes the failure of water sample collection; Pulling by mistake, when the release hook rope is pulled by mistake, the bottom cover of the barrel closes, causing the barrel to fail to enter the water

2. It is difficult to accurately control the sampling depth of the water body with this deep-water sampling barrel. Although the scale mark can be set on the pull rope body, when sampling a deep-water well, if the height from the water surface to the wellhead cannot be calculated, it cannot be calculated. Water entry depth of sampling bucket

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