JPH0240781Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a water filtration device for aquarium fish tanks, particularly an external filtration device that is placed on the upper edge of the aquarium. .

(Prior art) As this type of filtration device mounted on the upper edge of the aquarium, as shown in Utility Model Publication No. 53-22556, water in the aquarium is driven by a motor to a filtration tank placed above the aquarium. The water is pumped up through the pumping pipe,
This water is sprinkled onto the filter medium by a water sprinkling member, and the filtered water is guided through the filter medium to a return water storage chamber, and is allowed to fall back into the water tank from a drainage hole drilled in the bottom wall of the chamber. What is done is known.

(Problems to be solved by the invention) However, since this type of filtration device itself is placed on the upper edge of the aquarium, it protrudes significantly above the aquarium and is unsightly.

In addition, the bottom wall of the device placed as described above is approximately flush with the water tank, and since the water tank is normally used with a smaller amount of water than when it is full, the bottom wall and the water surface are The distance, that is, the head difference, is relatively large, and there is a problem in that a gurgling noise is likely to be generated when filtered water flows down by gravity from the drainage hole. On the other hand, even if a falling pipe is installed in the drainage hole so that its lower end faces into the water, as mentioned above, the head is large and the force of the water flowing down is strong, so water does not reach the intake port at the upper end of the falling pipe. When it flows in, it also sucks in a lot of the surrounding air, causing an unpleasant sizzling sound, and what's more, when the air introduced into this falling pipe is released from the bottom end as bubbles into the water in the aquarium. There was a problem in that a fairly loud so-called bubble sound such as a bubbling sound was likely to be generated.

All of these sounds have the problem of being extremely annoying, especially late at night or in a quiet place.

(Means for solving the problem) This invention was made in view of the above problem, and when placed on the upper edge of the aquarium,
A filtration device for aquarium fish tanks that can reduce the protrusion above the aquarium compared to conventional products with the same filtration capacity, and can minimize the noise generated when filtered water is allowed to fall back into the aquarium. In an aquarium upper edge-mounted filtration device that is used by being placed on the upper edge of the aquarium A, the bottom wall of the filtration tank 5 is provided with at least the upper edge of the aquarium A. A concave part 5c is formed except for the placing part 5a to be placed, and a drainage hole 11 is bored in the concave part 5c.

(Example) Hereinafter, the specific structure of this invention will be explained based on the illustrated example.

The filtration device according to this embodiment includes a horizontally elongated filtration device main body 1 and a body 1 formed separately from this.
It is composed of an arrangement part 2 for heating-related members combined with one end of the heating-related member.

The filtration device main body 1 is partitioned in the width direction by a fixed partition wall 3, and has a pump motor mounting chamber 4 at one end and a filtration tank 5 in the remaining part. A lower protruding edge 6 protruding downward is formed at the lower end of one of the left and right side walls 1a, 1c and the side wall 1b at one end of the filtration tank 5 facing the fixed partition wall 3.

The filter tank 5 has a side wall 1b at one end facing the fixed partition wall 3 on the inner surfaces of the left and right side walls 1a, 1c.
A partition plate 8 is fitted into a slide guide 7 which is provided closer to the side and has a substantially U-shaped cross section, and is partitioned into a filtration chamber 9 and a return storage chamber 10. The bottom wall of the filtration tank 5 includes a mounting portion 5a placed on the upper edge of the water tank A, that is, a portion having a predetermined width corresponding to the width of the upper edge of the water tank A from the lower protruding edge 6, and the fixed portion 5a. A recess 5c is formed leaving a portion 5b of a predetermined width from the partition wall 3 and the side wall 1c that does not have the downward protruding edge 6, and the filtration chamber 9 and the return storage chamber 1 are passed through the recess 5c.
0 is in a continuous state. A drainage hole 11 is bored in the recess 5c on the side of the return storage chamber 10, and a drop pipe 18 is fitted into the drainage hole 11 from above so as to protrude downward. On the other hand, the filtration chamber 9 includes a bottom wall 5a excluding the recess 5c,
A filter medium 13 is loaded on the screen plate 12 placed on the screen plate 5b, and a watering tray 14 is provided at the upper center of the screen plate 12 between the fixed partition wall 3 and the partition plate 8. It is being

The arrangement part 2 for heating-related members has three side walls 2a.
and a bottom wall 2b in which a thermostat insertion hole 15 and a heater cord insertion hole 16 are bored, and is detachably attached to the pump motor mounting chamber 4 side of the filtration tank body 1, and Similar downward projecting edges 17 are formed at the lower ends of the two adjacent side walls 2a so as to be continuous with the downward projecting edges 6 of the main body 1.

In addition, in the figure, 19 is a pump motor, 20 is a pump mechanism, 21 is a water pump, 22 is a filter tank lid made of transparent synthetic resin, S is a thermostat, and H is a heater.

The above-mentioned filtration device is configured such that the recess 5c is fitted into the water tank A, and the lower protruding edges 6, 1
By supporting the mounting portion 5a on the upper edge of the aquarium A so that the mounting portions 7 are positioned on the left and right sides of the aquarium A and on the outside of the upper edge of the rear wall, the mounting portion 5a is stably placed on the upper part of the aquarium A without shifting. placed. And motor 1
9 is activated, water in the water tank A is guided to the watering tray 14 through the water pumping pipe 21, and water is sprayed from there toward the filter medium 13. After this water passes through the filter medium 13 and is filtered, the water passes through the recess 5.
c, passes below the partition plate 8 to reach the storage chamber 10, and is returned to the water tank A through the drop pipe 18. On the other hand, the thermostat S attached as an accessory equipment is inserted into and supported by the insertion hole 15 of the heating-related member arrangement part 2, and the heater H arranged in the water tank A at a position below and adjacent to the thermostat S is The cord is led to the power source through the cord insertion hole 16.

(Effect of the invention) As mentioned above, this invention is a filtration device mounted on the upper edge of the aquarium, so it filters and cleans the water in the aquarium in the same way as conventional products. In addition, since a concave portion is formed in the bottom wall of the filtration tank, leaving at least a mounting portion placed on the upper edge of the water tank, this device is suitable for It is carried by the upper edge and placed on the upper edge of the aquarium in a state where the recess is fitted into the aquarium. Therefore, compared to conventional products of comparable size that have the same capacity, that is, filtration processing capacity, the degree to which the filtration tank protrudes above the water tank can be suppressed to a lower level, and the external appearance can be made even better. By bringing the outer circumferential surface of the recessed portion of the device into contact with the upper inner circumferential surface of the water tank, their engagement prevents the filtration water tank from shifting or moving inadvertently on the water tank, thereby improving its stationary stability. It can be improved.

Furthermore, since a drainage hole is bored in the recess and a falling pipe is fitted into the hole,
The distance from the hole to the water surface, ie, the head, can be made smaller by the depth of the recess compared to conventional products. Therefore, when filtered water flows down from the drainage hole,
The force of the water can be suppressed, and the water can be guided to the falling water pipe and allowed to flow back quietly into the aquarium, and the level of unpleasant noise generated at that time can be suppressed.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a longitudinal sectional view, FIG. 2 is a sectional view taken along the line shown in FIG.
FIG. 3 is a perspective view of the disassembled state. A...Aquarium, 5...Filtering tank, 5a...Placement part,
5c... recess, 9... filtration chamber, 10... return storage chamber, 11... drainage hole.

Claims (1)

[Claims for Utility Model Registration] In an aquarium upper edge-mounted type filtration device that is used by being placed on the upper edge of the aquarium A, the filtration device is placed on the bottom wall of the filtration tank 5, at least on the upper edge of the aquarium A. A recess 5c is formed leaving the placement part 5a, a drainage hole 11 is bored in the recess 5c, and a falling pipe 18 is fitted into the drainage hole 11 so as to project downward. A unique filtration device for aquarium fish tanks.