Patent ID: 11872173
Assignee: SUZHOU ALTON ELECTRICAL & MECHANICAL INDUSTRY CO., LTD.
Field: Environmental technology (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 15:
16. The main unit of the nursing machine of claim 14, further comprising a negative pressure source for providing suction power for sucking sewage, a sewage bucket for accommodating the sewage, a water blocking device, an air inlet pipeline communicating with the sewage bucket and an air inlet port of the water blocking device, and an air outlet pipeline communicating with the negative pressure source and an air outlet port of the water blocking device,
wherein the water blocking device comprises a float capable of blocking the air outlet port, a water storage cavity, and a float accommodation cavity for accommodating the float; the air inlet port is vertically opposite to and located above the water storage cavity, and the air outlet port is vertically opposite to and located above the float accommodation cavity;
wherein the water blocking device further comprises a labyrinth-type channel communicating with the water storage cavity and the float accommodation cavity, and a plurality of division boards extending up and down and being spaced arranged to form the labyrinth-type channel; and
wherein the labyrinth-type channel is located between the water storage cavity and the float accommodation cavity, and configured to communicate between the water storage cavity and the float accommodation cavity.