Automatic measuring device for measuring degree of finess of coal powder

摘要

The present invention relates to an automatic coal fineness measurement device. This includes a support tube fixed inside the pulverized coal delivery pipe and providing a support space, a collection rod installed in the support space and having a collection space to reciprocate inside and outside the pulverized coal delivery pipe, a rod rotating part that rotates the shaft of the collection rod, and collection a sample collection unit having a rod transfer actuator for positioning the rod inside or outside the pulverized coal transfer pipe; a particle size classification unit having a plurality of mesh sheets having different mesh sizes and spaced apart in the vertical direction and separating the pulverized coal by particle size size; and a weight measuring unit for each particle size that receives the pulverized coal classified by the particle size classification unit through an inlet and measures the weight of the pulverized coal for each particle size. The apparatus for automatically measuring the fineness of coal of the present invention as described above has excellent extraction efficiency of the pulverized coal passing through the pulverized coal transfer pipe, the structure and procedure for collection are simple, and the fineness and the ratio of each particle size of the collected sample are measured in the field. As it can be grasped in real time, it is possible to quickly manage and control the pulverized coal going to the boiler, thereby improving the boiler efficiency. In addition, since a multi-layered mesh body is used to determine the degree of fineness, the overall structure is simple, maintenance and repair are easy, and there is no degradation in performance even in a harsh environment with severe vibration.