Device for cleaning aquariums

摘要

A cleaning device for aquariums comprises a water-tight enclosure configured to be submerged under water and a water pump comprising an inlet for receiving water and an outlet pipe for expelling water. The outlet pipe comprises a central axis. A power source is disposed within the water-tight enclosure for powering the water pump. An adjustable nozzle comprises a nozzle outlet in fluid communication with the outlet pipe, and the adjustable nozzle is configured to be rotated about the central axis of the outlet pipe to selectively adjust a position of the nozzle outlet. In one example, water volume flow or water velocity flow expelled from the nozzle outlet can be selectively adjusted via rotational adjustment of the adjustable nozzle relative to the outlet pipe.

主权项

1. A cleaning device for aquariums, comprising:
a water-tight enclosure configured to be submerged under water; a water pump comprising an inlet for receiving water and an outlet pipe for expelling water, wherein the outlet pipe comprises a central axis and at least two holes extending through a sidewall of the outlet pipe, and wherein said at least two holes are angularly displaced from each other about the central axis of the outlet pipe; a power source disposed within the water-tight enclosure for powering the water pump; and an adjustable nozzle comprising an interior wall surrounding the sidewall of the outlet pipe, the interior wall having a single opening coaxial with a nozzle outlet in fluid communication with the outlet pipe, wherein the adjustable nozzle is configured to be rotated about the central axis of the outlet pipe to selectively adjust a rotational position of the nozzle outlet with respect to the at least two holes of the outlet pipe, wherein a relative maximum water volume flow or water velocity flow is discharged out of the nozzle outlet of the adjustable nozzle when one of the at least two holes is arranged substantially coaxial with a nozzle axis of the nozzle outlet, wherein a relative minimum water volume flow or water velocity flow is discharged out of the nozzle outlet of the adjustable nozzle when the nozzle outlet is rotated to a position between the at least two holes such that substantially an entire cross-sectional area of both of the at least two holes is covered and obscured by the interior wall, and wherein water volume flow or water velocity flow expelled from the nozzle outlet is selectively increased or decreased to an intermediate amount, relative to the minimum and maximum, by rotating the nozzle outlet relative to the at least two holes of the outlet pipe to thereby selectively cover or uncover the cross-sectional area of the at least two holes with the interior wall.