| 摘要 |
An evacuator for the defecation of domestic animals, in which there is a combination of water and air. The water enters via a pipe as far as a tank located at the top of a column and the air enters via another pipe which is concentric with the previous one. In the tank, the water keeps the pressurised air up and the air forms part of a valve-type circuit which is actuated by the platform where the animal is located, the water being charged and discharged automatically in step with the entry and departure of the animals. <IMAGE>
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