Dust removal equipment closed cover is to enclose all the pollution sources, so that the spread of harmful substances is limited in a small confined space, and with enough exhaust disk to generate negative pressure in the cover, to ensure that harmful substances do not escape from some holes and gaps. Some equipment itself is closed, only need to be connected to the exhaust pipe as required, such as drum screen, cleaning roll, etc.
According to the installation form, the closed cover is divided into fixed and mobile two kinds, such as the closed cover of the old sand belt conveyor is fixed, and the closed cover of the large shakeout machine is mobile.
According to the degree of sealing, the sealing cover is divided into local sealing cover, the whole sealing cover, and the large volume sealing chamber.
The partial sealing cover is the partial sealing of the dust point of the equipment, and the process equipment is exposed outside the sealing cover. Such as belt conveyor blanking point. The volume of the local sealing cover is small, which is suitable for dust sources with small dust flow velocity and small concentrated and continuous dust and instantaneous pressurization.
The overall sealing cover is to seal most of the equipment or location that generates dust, and only leave the transmission part of the equipment outside the cover, such as the rolling screen overall sealing cover is suitable for dust sources with large mechanical vibration, dust area and dust production airflow speed.
The large volume closed chamber is to seal all the equipment or locations that produce dust, such as the vibrating screen closed chamber. The large volume of the closed chamber can buffer the dusty air flow and reduce local positive pressure. It is suitable for equipment with many dust points, large dust area and dust producing air velocity, and frequent maintenance or regular replacement of parts.