Aquarium waste cleaning device

An aquarium cleaning device comprising a sucking head and a filter disc welded with a bottom opening of the sucking head, and a stirring pipe protruding slantingly through the filter disc and having a tubular portion on the filtr disc to protrude in an upper tubular portion of the sucking head and a lower filter portion with many filter holes for water to flow through, a water lead pipe connected with the tubular portion and extending up out of an aquarium, a sucking ball connected with an outer end of the water lead pipe to be repeatedly compressed to suck and push the water in the aquarium through the sucking head and the filter disc and the stirring pipe to suck out waste mixed in the water.

BACKGROUND OF THE INVENTION 
A conventional method for cleaning an aquarium is to drain the water in an 
aquarium and to wash several times the small stones placed in the aquarium 
or to accommodate a water cleaner in an aquarium. But fish waste and fish 
feed sink among stones and are not easily to be got ridden of by the water 
cleaner. 
SUMMARY OF THE INVENTION 
This invention has been devised to offer a kind of aquarium waste cleaning 
device of simple structure and easy use for getting rid of waste mixed in 
the water in an aquarium with no need of draining the water in the 
aquarium. 
The aquarium waste cleaning device in the present invention comprises a 
sucking head, a filter disc combined with a lower open bottom of the 
sucking head. The sucking head has an upper tubular portion and a lower 
curved-down mask-shaped body with a bottom large opening. The filter disc 
is flat and oval, having a plurality of filter holes, welded with and 
closing the bottom opening of the sucking head. A stirring pipe is firmly 
attached with the filter disc, protruding inclinedly through the central 
portion of the filter disc, having an upper tubular portion on the filter 
disc, and a lower filter portion bored with many filter holes under the 
filter disc. A water lead pipe is provided, with its lower end connected 
with an upper end of the upper tubular portion of the sucking head and 
with its upper end extending out of an aquarium and connected with a 
hollow sucking ball capable of compression and inflation. 
The sucking ball is to be continuously compressed to suck and push the 
water around the sucking head placed on small stones laid on the bottom of 
the aquarium to stir the water and the small stones placed on the bottom 
of the aquarium, forcing waste on the stones to float up from the upper 
surface of the stones or among the stones to be sucked partly through the 
stirring pipe and partly through an annular hollow space between the 
circumferential wall of the stirring pipe and the circumferential wall of 
the tubular portion of the sucking head. And then the water mixed with 
waste is sucked through the water lead pipe to the sucking ball to be 
exhausted out.

DETAILED DESCRIPTION OF THE INVENTION 
An aquarium waste cleaning device in the present invention, as shown in 
FIG. 1, comprises a sucking head 1 and a filter disc 2 welded together 
with the sucking head 1, a stirring pipe 3 provided to pass slantingly 
through the filter disc 2, and a sucking ball 41 connected with the 
sucking head 1 with a water lead pipe 4. 
The sucking heak 1 has a lower curved-down hollow maskshaped body, and an 
upper slanting tubular portion 11 and a bottom oval circumferential edge 
welded with an outer circumferential edge of the filter disc 2. The 
slanting tubular portion 11 extends upward slantingly and is connected 
firmly with a water lead pipe 4 which extends out of an aquarium and is 
connected with a sucking ball 4. 
The filter disc 2 is shaped oval and bored with a plurality of filter holes 
20 for water to flow through. 
The stirring pipe 3 is provided to pass slantingly through the filter disc 
2 and has an upper portion 31 on the filter disc 2 and a lower filter 
portion 32 under the filter disc 2. The lower filter portion 32 has many 
filter holes 30 in its circumferential wall and its bottom for water to 
flow through. 
The stirring pipe 3 has its upper tubular portion 31 protruding in the 
tubular portion 11 of the sucking head 1 with no connection with each 
other, and the outer circumferential edge of the filter disc 2 is welded 
with the lower circumferential edge of the sucking head 1. So one sucking 
passageway, i.e. a first sucking passageway a is formed in the interior of 
the tubular portion 31 of the stirring pipe 3 and another sucking 
passageway b. i.e. a second sucking passageway, is formed between the wall 
of the upper tubular portion 11 of the sucking head 1 and the wall of the 
upper portion 31 of the stirring pipe 3. 
The filter disc 2 is placed on an upper surface of small stones laid on the 
bottom of the aquarium, with the stirring pipe 3 protruding in the small 
stones. The sucking head 1 with the filter disc 2 and the stirring pipe 3, 
assembled together integrally, can be moved on the upper surface of the 
stones for cleaning waste therein. When the sucking ball 41 is compressed 
repeatedly, sucking and pushing the water in the aquarium through the 
water lead pipe 4 and the filter holes 20 and 30 of the filter disc 2 and 
of the lower filter portion 32 of the stirring pipe 3, the small stones 
may be stirred to let waste lying among the small stones float up. The 
floating waste with water is sucked up through the filter holes 20 in the 
filter disc 2 and through the first sucking passageway b. The waste hard 
to float up and lying between the stones and the bottom of the aquarium 
may be sucked through the lower filter portion 32 of the stirring pipe 3 
and the tubular portion 31, i.e. the first sucking passageway a. In this 
way, the whole waste in the aquarium can be sucked out. In addition, the 
small stones can be prevented from flowing out together with water by 
means of the smaller size of the filter holes 20, 30.