Chemical wastewater reaction tank wastewater sampling device

Abstract

The invention provides a chemical wastewater reaction tank wastewater sampling device, and relates to the field of chemical wastewater treatment. The chemical wastewater reaction tank wastewater sampling device comprises a sampling barrel, a sleeve is fixedly mounted in the sampling barrel, a telescopic sealing gasket is fixedly mounted at the bottom end of the sampling barrel, a rotating mechanism is rotatably connected into the sleeve, and a pressing mechanism is rotatably connected into the rotating mechanism, penetrates through the sampling barrel and extends to the position above the sampling barrel; and the sampling barrel is divided into a stirring cavity, a water storage cavity and an exhaust cavity, and the stirring cavity is located at the bottommost part. According to the chemical wastewater reaction tank wastewater sampling device, by arranging the center rod and the spiral steel bar, wastewater in the stirring cavity can be stirred through vertical movement of the center rod, air in the water storage cavity is pumped out through the piston sleeve to form negative pressure, and after the threaded shaft is rotated, the stirred wastewater can be automatically stored in the water storage cavity, so that the problems that in the prior art, a reaction tank is large in area, stirring is not easy, and stratified sampling operation is inconvenient are solved.

Description

technical field [0001] The invention relates to the technical field of chemical wastewater treatment, in particular to a wastewater sampling device for chemical wastewater reaction tanks. Background technique [0002] Chemical wastewater refers to the wastewater produced in the process of producing products in chemical plants, such as the oily wastewater produced in the production of ethylene, polyethylene, rubber, polyester, methanol, ethylene glycol, oil tank farms, air separation and air compressor stations, etc., after After biochemical treatment, it can generally meet the national secondary discharge standard. Due to the shortage of water resources, the water that meets the discharge standard needs to be further treated to meet the recycling requirements of industrial water replenishment. [0003] The chemical wastewater reaction tank needs to sample the wastewater in the reaction tank for detection. The existing wastewater sampling device uses layered sampling. The rea...

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Problems solved by technology

[0003] The chemical wastewater reaction tank needs to sample the wastewater in the reaction tank for detection. The existing wastewater sampling device uses layered sampling. The reason why layered sampling is required is that the concentrations of the upper and lower layers of the wastewater are different, and a single layer does not have Typically, the stratified sampling device has a complex structure and is difficult to maintain, and the stratified sampling device cannot sample the entire water layer

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