Self-heating type coal mine drying flexible screen

Abstract

The invention discloses a spontaneous heating type coal mine drying flexible screen, and relates to the technical field of flexible screens. A self-heating type coal mine drying flexible screen comprises a variable power source, the variable power source is electrically connected with an electric heating wire through an electric wire, the electric heating wire is fixedly installed on the flexible screen, and a temperature sensor is fixedly installed on the surface of the flexible screen. According to the coal mine screening device, the electric heating wire embedded in the screen is electrified to heat, so that coal mine screened on the screen is heated and dried. In this way, the drying process can be added by replacing the flip-flow screen, new process links and corresponding equipment do not need to be added, and cost is greatly saved; meanwhile, due to simultaneous screening and drying, the production efficiency is improved. The technical problem that due to the high water content of the coal mine in the screening link, coal mine particles are agglomerated, viscosity is increased, and screening holes are blocked is solved.

Description

technical field [0001] The invention belongs to the technical field of flexible screens, and in particular relates to a self-heating type coal mine drying flexible screen. Background technique [0002] The relaxation screen is coal mine particle size classification equipment, and the flexible screen is widely used in the relaxation screen. In the process of screening coal mines by relaxation screens, the coal mine particles are often agglomerated or too viscous due to high moisture content in the coal mines, which will block the screen holes and reduce the screening efficiency. Therefore, coal mines need to be dehydrated and dried. Initially, the drying of coal mines was a combination of a combustion furnace and a drum dryer. The combustion furnace produced high-temperature flue gas by burning low calorific value coal, and then passed the high-temperature flue gas into the drum dryer to dry the coal mine. Since the burning of coal will produce smoke and harmful gases that ...

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Problems solved by technology

[0003] The existing technology needs to add additional equipment to dry the coal mine before the screening process, which is equivalent to adding a process link. At the same time, it is necessary to purchase one or two drying equipment, and the combustion furnace will also produce smoke and gas that pollute the environment. unfriendly environment

For a coal separation plant without a drying process, if you want to add a coal drying process, you need to rearrange the process and carry out a transformation. For the requirement of free installation space in the workshop, the transformation is inconvenient and costly

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