Tapered jet foam sol generating device for controlling coal dust at transferring point of conveyor belt

Abstract

The invention provides a tapered jet foam sol generating device for controlling coal dust at a transferring point of a conveyor belt. The device comprises a foam generating portion, a foam gelling portion and a foam sol outlet portion. The foam generating portion is composed of a water inlet pipe, an air inlet pipe, a negative pressure adder, a surfactant solution wrapper and mixers, the foam gelling portion is composed of a gelling device, a nozzle and an adhesive wrapper, and the foam sol outlet portion is composed of a diffuser, wherein the diffuser is tapered, and an included angle formed by the side wall of the diffuser and a tapered bottom in the horizontal direction can be adjusted within a range from 30 degrees to 60 degrees. A surfactant is sucked in by the negative pressure formed at a throat portion by the negative pressure adder; mixers are evenly distributed on a shaft through axial long and short plates alternately to mix gases and liquids fully; a compressed gas which is shunted by an air compressor serves as the motive power, and an adhesive is sprayed onto a foam body evenly through the nozzle; and the diffuser is used for connection, a foam sol is jetted to a usage point in a conical shape, and economical and efficient dust prevention is achieved.

Description

technical field [0001] The invention belongs to the technical field of coal mines, and uses the generating device to generate conical jet foam sol and close a coal dust source to control the technical process of coal dust. Background technique [0002] Coal dust has become one of the major disasters faced by my country's coal mines and coal transportation industry. According to statistics, in 2010, there were 27,240 new cases of occupational diseases in my country, and 23,812 new cases of pneumoconiosis, accounting for 87.42% of the number of new occupational cases; There were 679 pneumoconiosis deaths. Among the new pneumoconiosis cases, 94.21% were coal workers' pneumoconiosis and silicosis, 12,564 and 9,870 cases, respectively. As far as the port is concerned, according to the survey, during the loading and unloading of coal at the coal wharf, the amount of coal dust generated accounts for 0.1% of the entire coal transport volume, while the amount of coal fugitive accounts...

AI Technical Summary

Problems solved by technology

The foaming fluid in the developed equipment is only added intermittently and cannot work continuously, so the research results are only applicable to drilling construction sites, not suitable for mining working faces and reloading points and other places with narrow spaces and continuous dust production

Since 1995, Professor Jiang Zhong'an of Beijing University of Science and Technology has also carried out research on foam dust removal. He theoretically analyzed the structure and working parameters of the mesh foamer. His research content mainly focuses on high-expansion foam and lacks industrial experiments. and practical application

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