Automatic sewage sampling tank based on pressure difference

Abstract

The utility model discloses an automatic sewage sampling tank based on pressure difference, and relates to the technical field of sewage. The automatic sewage sampling tank comprises a tank body, a liquid cavity is formed in the inner bottom wall of the tank body, a guide column is fixedly connected to the middle of the tank body, a liquid inlet is formed in the middle of the guide column, a hydraulic cover sleeving the outer side of the guide column is movably connected to the top of the tank body, and a groove matched with the guide column is formed in the middle of the hydraulic cover. According to the automatic sewage sampling tank based on pressure difference, through cooperated use of the tank and the hydraulic cover, before use, compressed gas is supplemented into the gas tank according to the depth of a to-be-collected sample; when the sampling device is used for sampling, and a set depth is reached, the hydraulic cover moves downwards under the action of water pressure, the groove is communicated with the liquid inlet, sampling is started, and compressed gas with different volumes can be filled when sampling is conducted in liquid with different depths, so that the effectof automatically sampling at a fixed depth is achieved, the sampling efficiency is improved, and the sampling work is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of sewage, in particular to an automatic sampling tank for sewage based on pressure difference. Background technique [0002] Sewage is a source of polluted water that we produce in our daily lives. Sewage contains a large amount of pollutants. It needs to be treated before it can be discharged into rivers, so as to achieve the purpose of environmental protection. In addition, in order to treat sewage more effectively, Generally, the sewage will be sampled first, so that the sewage can be treated in a more targeted manner in the later stage, and the treatment efficiency can be improved. [0003] When the current sampling device is in use, most of the sewage is manually extracted. When sampling, the sampling pipe is inserted into the sewage, and then the sewage is pumped into the sampling pipe. The extraction efficiency is relatively low, and the human body directly contacts with the sewage. The human body i...

AI Technical Summary

Problems solved by technology

[0003] When the current sampling device is in use, most of the sewage is manually extracted. When sampling, the sampling pipe is inserted into the sewage, and then the sewage is pumped into the sampling pipe. The extraction efficiency is relatively low, and the human body is directly in contact with the sewage. The human body is harmed, and at the same time, the current sampling device cannot automatically sample a specific depth, and can only be sampled by manually extending into a specific position, which makes the sampling process more cumbersome and seriously affects the sampling efficiency

Images