4) Cutting off a portion of the dust collectors used in parallel during maintenance and repair does not affect the operation of the system.

Parallel connection method of dust collectors

When there are not many dust collectors (usually no more than 8), a single tube parallel connection can be used. In this case, each dust collector has its own intake and exhaust pipes, which are connected to the intake and exhaust pipes respectively, or they can exhaust to the atmosphere separately. Each dust collector can have a separate ash hopper or share a single ash hopper.

In theory, the dust removal efficiency and resistance loss after parallel operation of a cyclone dust collector should remain unchanged. However, in reality, due to the following reasons, efficiency will decrease and the downward trend will increase with the increase of parallel connections.

1) Gas flows backwards from the shared ash hopper into the dust outlet of a portion of the cyclone dust collector;

2) The wind speed in the intake chamber is too high, and the structure of the intake duct, intake chamber, and exhaust chamber is not uniform enough, resulting in differences in the size or shape of the cyclone dust collector, causing the gas flow rate of some cyclone dust collectors to be higher or lower than the average flow rate;

3) Poor sealing of the joint parts such as the shell and partition, as well as the dust removal part, may cause air leakage, or the cyclone dust collector may be strongly rubbed by dust, resulting in perforation;

The resistance loss of parallel cyclone dust collectors is greater than when used alone, mainly due to changes in the outlet, inlet, and ash discharge after parallel connection. It is generally estimated that the resistance loss of parallel connection is 1.1 times that of when used alone.