Particulate matter sampling rotating shaft inner runner system

Abstract

The invention relates to a particulate matter sampling rotating shaft inner runner system. The inner runner system comprises a gas inlet duct, an upper vertical runner, a gas inlet cavity and a lowervertical runner, wherein the gas inlet duct is formed in one side end surface of a rotating shaft base, the upper vertical runner is formed in an upper shaft core, the two ends of the upper vertical runner communicate with the gas inlet duct and the gas inlet cavity in a machine core, an inner gas channel is formed between the gas inlet cavity and a measuring chamber, and the lower vertical runneris formed in a lower shaft core so as to enable redundant gas inside the machine core to be discharged to the outside. According to the inner runner system, consistent inner gas runners are designedby reasonably utilizing corresponding parts of a rotating shaft so that waste gas to be detected can be continuously recycled between the measuring chamber and an external waste gas environment, and therefore a flow path can be greatly simplified, dismounting is not needed in the maintenance process, the machine core and the measuring chamber can freely rotate to enter and exit a box body withoutdisconnecting the flow path, the structure is compact, the design is reasonable, and the space can be saved; and meanwhile, the appearance of a product can be more concise and attractive, and the requirements of personalized and diversified development directions of modern machinery design products can be met.

Description

technical field [0001] The invention relates to the technical field of particle detection, in particular to a flow channel system in a particle sampling rotating shaft. Background technique [0002] At present, in the field of particle detection technology at home and abroad, according to the different physical measurement mechanisms, it can be divided into sampling method and non-sampling method. Considering the requirements of continuous analysis and long-term online monitoring, light scattering method is a continuous sampling method. It can meet the data volume requirements in the production process of factories involved in exhaust emissions, and is more in line with the conditions of industrial mass production operation from the perspectives of safety and structural equipment manufacturing costs. [0003] The general principle of the light scattering method is that when the floating dust supplied to the darkroom or closed chamber is irradiated with light, under the condi...

AI Technical Summary

Problems solved by technology

[0004] Those skilled in the art have analyzed the defects of the existing known technologies. If based on the principle of light scattering, the jet pump is used as the air drainage source to continuously introduce industrial exhaust gas into the measurement chamber, so that the entire device forms a continuous loop. How to design this circuit has become a very important link in product design. However, the existing measuring devices do not have a specific technical solution to achieve the desired effect. The system, however, needs to be disassembled during device maintenance, and the flow path is additionally disconnected. The movement and the measurement chamber cannot be freely rotated in and out, resulting in inconvenient operation; in addition, the movement cannot be used reasonably and effectively due to the non-circulatory passage of the gas entering , rotating shaft, rotating shaft fixing seat and other components, not only that, but even affect the operation of these components

Images