Electric aspiration systems
Motors aspiration systems are blocked with the electric dust-production and transport
equipment. When the wet air pollution control water flow in the cyclones or scrubbers automatically stops when you stop the motor of aspiration system.
Motors exhaust alarm systems are sometimes blocked from automatic valves that feed fresh air PLI air from an adjacent room.
most complex and least-developed automated device, serving the extraction system under the joint gidroobespylivanii and moisture. material. It is necessary not only blocking the fan motor with electric equipment and vehicles (when the fan stops stops equipment), but with opposite lock timer that stops the fan motor after a certain time - usually 10-15 minutes after stopping the equipment. In addition, the fan motor is blocked and the supply of water and air into the system gidroobespylivaniya and moisture. In addition to the stated need for automatic termination of water supply system gidroobespylivannya and especially wet during idle operation of the equipment, ie, in the absence of it (eg on a conveyor belt) being processed or transported material.
For the automatic control system of ventilation should normally take the same form of energy being used to automate core processes.
Pneumatic systems are used if compressed air networks, as well as in hazardous locations. Electrical systems are applied in the absence of compressed air, as well as complex regulatory schemes, in which is difficult to use pneumatic regulators. Sometimes used mixed electro system.
add in conclusion that in industrial buildings without lights automation of vents and block manufacturing equipment with local exhaust systems required. In rooms without windows, exhaust fans with reserve, it is necessary to provide automatic switching system with a working fan on the back (SR 245 63, В§ 4.7).