Through the pilot dividing into one action, the exhaust passage I on the pilot part 1 is connected with the passage II on the cover 2. The compressed air of the upper chamber III of the diaphragm 3 is discharged instantaneously from the passage II on the cover 2 and the exhaust passage I on the pilot part 1. At the same time, the diaphragm 3 moves upward due to the pressure difference between the upper and lower compressed air, so that the passage IV, the exhaust passage V, the exhaust passage VI on the shell 6 are connected with the passage II The passage_on the buffer ring 5 is connected with the cavity_on the upper part of piston 7. The compressed air of the cavity_is discharged through the passage V and_. The piston 7 moves upward rapidly under the pressure difference between the compressed air at the upper and lower ends. Finally, the compressed air in the seven packs (sub-chambers) is ejected from the outlet of the valve to achieve the purpose of ash removal.
Through the action of the pilot part 1, compressed air enters the chamber III through channels I and II. The diaphragm moves downward due to the difference of compressed air pressure between the upper and lower diaphragms. The connection between the six passages IV and the exhaust passage V of the shell is separated. The compressed air in the air bag (air dividing box) enters the upper chamber VII of the piston through passage IX. The piston moves downward due to the action of gravity, and the gas is sealed. The exhaust port of the bag (dividing box).