The invention discloses an automatic cotton cleaning device for a
spinning machine suction box, which mainly comprises a cotton sucking
flute pipe, a
flute pipe air collecting
pipe, a
flute pipe air collecting pipe inlet, a broken-end strand suction box, a broken-end strand filter net, a
centrifugal fan and
fiber aggregation negative
pressure pipe, a negative pressure air collecting pipe, a negative pressure air collecting pipe inlet, a negative pressure suction box, a hair filter net, a negative pressure
centrifugal fan, an automatic cotton cleaning delivery pipe, a negative pressure valve, an automatic cotton cleaning air sucking pipe, a
storage tank and a filter net, wherein one end of the automatic cotton cleaning delivery pipe is connected with the hair filter net, while the other end is connected with the
storage tank through the negative pressure valve; and one end of the automatic cotton cleaning air sucking pipe is communicated with the broken-end strand filter net, while the other end is communicated with the
storage tank and is provided with a filter net. During doff stop, the cotton is not needed to be specially cleaned manually, and the whole device is simple in structure, and is time-saving and labor-saving for cleaning the cotton.