A groundwater detection device

Abstract

The invention relates to a groundwater detecting device. Wherein the lower one of two adjacent screw nuts is defined as a lower screw nut, and the upper screw nut is defined as an upper screw nut; thelower screw nut has a lower screw nut shifting position upwardly shifting along a corresponding rotation stop key and a lower screw nut rotation position that is disengaged from the upper side of thecorresponding rotation stop key and rotates with a drive screw in the process of driving with the drive screw; The drive screw has an optical axis segment corresponding to the upper screw nut; the upper screw nut has a upper screw nut fixed position cooperating with the rotation stop of the corresponding rotation stop key and corresponding to the optical axis end, a upper screw nut shifting position upwardly shifting along the corresponding rotation stop key driven by the drive screw and a upper screw nut rotation position that is disengaged from the upper side of the corresponding rotation stop key and rotates with the drive screw; The upper end of the lower screw nut is provided with a pushing structure for pushing up the lower end of the upper screw nut to move the upper screw nut fromthe upper screw nut fixed position to the upper screw nut shifting position. According to the groundwater detecting device, a groundwater detecting device is provide in which a sample chamber can hold several liquid samples.

Description

technical field [0001] The invention relates to a groundwater detection device in the field of environmental protection detection. Background technique [0002] There are basically two forms of existing water quality testing. The first is to salvage water samples in containers and bring them to the laboratory for testing, which has the problems of poor timeliness and data reliability; the other is the off-the-shelf TDLAS technology testing. It is a non-destructive, real-time sampling and detection technology using laser to detect the medium. [0003] For example, the Chinese patent with the publication number CN106802287B discloses a "water quality monitoring device and detection method". The water quality monitoring device includes a housing, and the two sections of the housing are respectively provided with a front cover and a rear cover. There are 6 hollow cavities between the two end faces in the length direction of the shell. The 6 hollow cavities are parallel to each ...

AI Technical Summary

Problems solved by technology

The existing water quality monitoring device has the following problems: the sample cabin can only store one liquid sample, which limits the scope of use of the water quality monitoring device and cannot achieve multi-position sampling. When multi-position sampling is required, frequent water quality monitoring is required. It is very troublesome to operate the monitoring device raised above the water surface. In addition, the sample chamber that can only store one liquid sample actually loses its own meaning of existence, because strictly speaking, a certain amount of liquid samples can also be stored through the detection chamber.

Images