There is a plastic balance ring on the top of the drum of the washing machine, which is filled with a certain proportion of salt water, which is used to maintain dynamic balance when rotating. When disassembling this washing machine, such salt water can not be discharged casually according to environmental protection requirements, so it needs to be collected and sent to environmental protection treatment. The brine collection device designed by our company uses the cylinder as the power, manually places the dismantled balance ring on the perforated suspension beam, starts the switch to punch, directly pierces the plastic ring of the balance ring to drain water, inverts the perforated balance ring and places it on the leaky suspension beam on both sides, and the brine directly flows into the collection tank.