JPS6212792U - - Google Patents

Description

[Brief explanation of the drawing]

The drawings are longitudinal sectional side views of main parts showing an embodiment of the device of the present invention, in which Fig. 1 shows a state in which the extractable part is connected to the permanent part, and Fig. 2 shows a state in which the extractable part is separated from the permanent part. It represents. 1 is a rotating shaft, 2 is a motor room, 3 is an aeration impeller, 4 is a pumping impeller, 5 is an upper casing, 6 is a water intake port, 8 is a discharge port, 11 is an intake pipe, 1
2 is a lower casing, 13 is a water intake port, and 14 is a discharge port.

Claims (1)

[Scope of utility model registration request] An aeration impeller 3 and a pumping impeller 4, which are arranged opposite to each other at a certain interval from a rotating shaft 1 led out from a motor room, are housed separately in an upper casing 5 and a lower casing 12, respectively. As the impeller 3 rotates, the accommodated upper casing 5 absorbs water from the water intake port 6 and discharges water from the circumferential discharge port 8, thereby sucking air from the atmosphere into the negative pressure section and aerating the water into the discharged water. The lower casing 12 housing the pumping impeller 4 communicates with the water intake port 13 and the discharge port 14 opened in the circumferential direction is guided upward by the discharge conduit 15. A switching device 16 is attached to the upper conduit portion of the discharge conduit 15, and the pumped water can be discharged to the outside of the tank or returned to the inside of the tank by operating the switching device 16. , an aeration device that also has a pumping function.