A constant temperature and constant flow continuous automatic air sampler adaptable to low temperature environment

Abstract

The invention discloses a constant-temperature constant-flow continuous automatic air sampler capable of adapting to a low-temperature environment. The air sampler comprises a machine shell, an upperprotective cover is installed at the top of the machine shell, a draught fan box is fixed to the bottom of the upper protective cover, a filter plate is installed at the bottom of the draught fan box,a flow dividing box is arranged below the draught fan box, a constant-temperature box is installed at the bottom of the flow dividing box, a backflow box is fixed to the bottom of the constant-temperature box, and a base is fixed to the bottom of the backflow box. A fan in the fan box can be fixed through the arranged fan box, impurities and dust sucked in from the fan box can be filtered throughthe arranged filter plate, and the air inlet pipe and the water inlet pipe can be heated through the arranged constant-temperature box and the electric heating rod. And through the connection of theupper protective cover and the fan box, the normal air intake of the air inlet can be ensured while the operation of the fan is protected. The fan drives the fan blades to rotate, and air is sucked infrom the air inlet and input into the air inlet pipe.

Description

technical field [0001] The invention relates to an air sampler, in particular to a constant temperature and constant flow continuous automatic air sampler which can adapt to low temperature environment, and belongs to the technical field of air sampling. Background technique [0002] In terms of ambient air, especially the detection of water-soluble toxic gases in the air, such as sulfur dioxide content, when the existing air sampler is used, the sampling range is small, and the sampling is also affected by the environment. When using the solution absorption method to collect various polluting gas components, the temperature of the absorption liquid often needs to be kept constant at a certain temperature point or within a certain temperature range. The value is lower than normal temperature, and low temperature will affect the concentration or other chemical properties of pollutants. At present, China's authorized patent, CN201820867439.8 (a constant temperature device for...

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Problems solved by technology

[0002] In terms of ambient air, especially the detection of water-soluble toxic gases in the air, such as sulfur dioxide content, when the existing air sampler is used, the sampling range is small, and the sampling is also affected by the environment. When using the solution absorption method to collect various polluting gas components, the temperature of the absorption liquid often needs to be kept constant at a certain temperature point or within a certain temperature range. The value is lower than normal temperature, low temperature will affect the concentration or other chemical properties of pollutants

At present, China's authorized patent, CN201820867439.8 (a constant temperature device for ambient air sampler and ambient air sampler) discloses an air sampler. At that time, the sampling efficiency of this type of sampler was low, and it could not continuously sample the air.

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