1, explosion-proof dust-free oven is strictly prohibited with open-flame heating elements for heating, to avoid flash fires caused by blasting. Heating tube appearance flow through the organic steam, the maximum temperature of its appearance shall not exceed the spontaneous combustion temperature of organic steam. The electrical control system shall not have the components that cause fire jumping. If you have to use when it is necessary to arrange outside the box and this part of the electrical appliances to positive pressure ventilation.
2, the box temperature control and over-temperature control system must be sure and reliable to ensure that the temperature inside the box will not exceed the spontaneous combustion temperature of organic vapors. If necessary, should be selected with chain planning, two independent over-temperature protection and over-temperature spray cooling system.
3, the box structure is necessary to have the energy release part (such as safety doors, etc.). This is to prevent the environmental hazards of blasting a recognizable method. As long as the structure of the planning agreement, the opening pressure should be as small as possible and open the area as large as possible.
4, according to the lower limit of organic vapor explosion limit volume percent and so on evaporation planning ventilation circulation system to avoid the accumulation of organic steam inside the box beyond the lower limit of the explosion limit. It is best to measure the operating room organic vapor (volume percent) concentration, so that the equipment to make timely protection response. However, there is no such sensor that can be applied to a variety of organic vapor concentration measurement. Baked objects on the shelf should make special provisions for the orientation, so that the baked objects uniformly heated and organic vapors in time to be taken away from the object appearance.
5, if the specific gravity of organic steam is greater than the specific gravity of air, duct planning should be effective to avoid organic steam sinking to the bottom of the dust-free oven or dead ends. Thus, the inner wall of the box should be lubricated, but also easy to clean. Planning the heating part of the orientation, but also need to consider the impact of heat radiation on the baked object may have.
6, the mechanical part of the activity should be taken to prevent friction sparks safety measures. High-speed running parts may be friction parts should be adopted safety clearance planning and soft metal structure. There may be accumulated static electricity parts should be considered grounding issues.
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