JPH0246173B2 - KANSHOGYOSUISOYOROKASOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water filtration device for an aquarium in which ornamental fish are raised, and particularly to an automatic water-filling type filtration device that is used by being hung externally on the edge of the aquarium.

Prior Art and Problems Filtration devices for ornamental fish tanks include those that are installed underwater in the tank, those that are placed between the upper edges of both sides of the tank,
Various types of installation methods are known, such as those that are hung externally on the edge of the aquarium, but the above-mentioned externally hung type is particularly useful because it is extremely easy to attach and remove and can be used regardless of the size of the aquarium.

As shown in U.S. Pat. No. 4,512,885, etc., such an external type filtration device generally has an electric suction pump installed at the lower side of a box-shaped filtration tank located outside the aquarium. It has a structure in which a water suction pipe is installed and extends forward from this pump part in an inverted U shape, and when the suction pump is driven, water from the aquarium is introduced into the filtration tank through the water suction pipe, The filtered clear water is configured to flow back into the water tank from the overflow port of the filter tank.

However, in the case of the above-mentioned conventional external type filtration device, the entire water suction pipe must be filled with water in order to apply the suction force of the suction pump. This method had the drawback of requiring a very troublesome operation of filling the pipe with water in advance, holding the water so that it would not run away, and installing it in the aquarium.

Means for Solving the Problems This invention was made to solve the above-mentioned conventional problems, and there is no need to fill the water suction pipe with water before use, and simply drive the pump after installing it in the aquarium. To provide an external type filtration device in which water from an aquarium is automatically introduced into a filtration tank through a water suction pipe simply by turning the water on the tank.

That is, for the above purpose, the filtration device for an aquarium fish tank according to the present invention has a box-shaped main body constituting a filtration tank, and a pump motor part that is attached to the main body and is located at a higher place than the water surface of the aquarium. and,
a water suction pipe that hangs down from the motor part and is immersed in water in the aquarium and has an enlarged diameter part formed at the bottom thereof;
A drive shaft of a pump motor is disposed concentrically within the water suction pipe, and a radial vane is attached to the drive shaft so as to be located within the enlarged diameter portion, and a radial vane is mounted on the inner side of the water suction pipe rather than the radial vane. A plurality of rectifier plates are formed on the upper side along the tube axis direction, and further includes a water conduit from the water suction pipe to the filtration tank and a filtrate return path from the filtration tank to the water tank.

Effect of the Invention When the filtration device of the present invention is installed, for example, by being hung externally on the edge of the lower tank, the enlarged diameter part of the lower part of the water suction pipe is immersed in water in the aquarium tank and is located below the water surface. The blade becomes immersed in water that has entered the water suction pipe. When the pump motor is driven to rotate the drive shaft, the radial vanes rotate together with the pump motor and act to discharge nearby water radially outward. The released water hits the inner circumferential surface of the enlarged diameter part and tries to spread upward and downward in a spiral shape along the inner circumferential surface, but on the upper side, it forms on the inner circumferential surface of the water suction pipe. The direction of the water flow is changed from the spiral shape to the direction of the tube axis by a plurality of rectifier plates along the tube axis direction, resulting in an upward flow. Therefore,
Sufficient water pumping force works within the water suction pipe to produce a pumping action, and water from the aquarium is automatically introduced into the filtration tank through the water suction pipe. In addition, since the upper part of the water suction pipe is narrower than the expanded diameter part where the radial blades are located,
Compared to the case where the entire diameter is the same, the weight of the water column at the upper part of the water suction pipe that is applied to the radial vanes during pump operation is reduced, and the pumping force is improved accordingly. From another point of view, this means that the horsepower of the pump motor required to obtain the required pumping power is reduced.
This makes it possible to downsize the motor.

Embodiments Hereinafter, the present invention will be explained based on illustrated embodiments.

In the figure, 1 is a box-shaped main body made of a synthetic resin molded product consisting of a rectangular filtration tank 2 with an open top and a projecting part 3 integrally protruding from the front upper part of the tank, and 4 is a motor part 5. The pump unit is composed of a rectangular parallelepiped-shaped synthetic resin case 6 that houses the pump, and a water suction pipe 7 that hangs down from the pump unit. 8 is a synthetic resin upper cover that is placed over the top and front of the main body 1;
9 is a bucket-shaped filter housed in the filtration tank 2, and 10 is a water tank.

The projecting portion 3 of the main body 1 forms a hook-shaped projecting portion 11 between the filtration tank 2 and the front surface, and
On the upper surface side thereof, a pump unit mounting portion 12 having a substantially U-shape in plan view and a slope-shaped filtrate water recirculation path 13 that slopes downward in a curved manner toward the front are configured. The pump unit mounting part 12 has vertical locking grooves 12a, 12a on both sides, and a stepped receiving part 12b at the bottom, which is formed on both sides of the case 6 of the pump unit 4. ridge 6a,
The entire pump unit 4 is supported by fitting the case 6a into the locking grooves 12a from above and positioning the case 6 on the receiving portion 12b. Further, the peripheral edge of the filtration tank 2 is lowered at the position of the filtrate water return path 13, and forms an overflow port 14 that keeps the internal water level at a constant level. Furthermore, a stepped portion 1a is formed on the inner side of the upper edge of the main body 1, extending from the filtration tank 2 to a part of the overhanging portion 3. An upper cover 8 is placed on this stepped portion 1a, and the left and right sides of the stepped portion 1a are Notches 8a, 8a of the cover 8 are engaged with chevron-shaped protrusions 1b, 1b provided on both sides to prevent the cover 8 from falling off.

The case 6 of the pump unit 4 is made up of a box-shaped base 15 made of transparent synthetic resin and a cover plate 16 made of opaque synthetic resin, which are connected by screws 17. The core 5a of the motor section 5 is formed to substantially surround the cylindrical section 18.
is arranged inside the case 6. Also, case 6
A cylindrical connecting portion 15a that communicates concentrically with the cylindrical portion 18 is integrally protruded from the bottom surface of the cylindrical portion 18.
A water suction pipe 7 is fitted into the upper end of the pipe a and connected concentrically. Furthermore, an inverted L-shaped water conduit 19 is formed in the case 6 adjacent to the cylindrical part 18 and the connecting part 15a.
9 communicates with the water conduit 19 and the connecting portion 15a through a connecting hole 18a whose upper part is slit-shaped and whose lower part is circular. It communicates with the water pipe 20. In addition, the water pipe 20
The tip thereof opens downward into the inside of the filter 9 of the filtration tank 2.

A drive shaft 21 with a cylindrical permanent magnet 5b attached to the upper end is concentrically disposed inside the cylinder section 18 and the water suction pipe 7, and the magnet 5b and core 5a actuate the motor section 5. The motor is configured. Note that 5c is an electric cord of the motor section 5, and 18b is a bearing member fitted to the upper end of the cylindrical section 18.

The water suction pipe 7 is made of transparent synthetic resin, and is composed of an upper narrow diameter part 7a and an enlarged diameter part 7b that expands continuously into a skirt shape, and the entire length of the narrow diameter part 7a and the enlarged diameter part 7b are the same. Six rectifier plates 22 are protrudingly provided on the inner circumferential surface extending over the upper part of the tube, extending along the tube axis direction and equally spaced in the circumferential direction. Note that the narrow diameter portion 7a itself is also set to have a diameter that becomes slightly larger toward the bottom. In the enlarged diameter portion 7b, a radial impeller 23 made of synthetic resin attached to the drive shaft 21 is arranged close to the lower end of the baffle plate 22, and at the lower end of the water suction pipe 7, a radial impeller 23 made of synthetic resin is arranged in the center. A connecting member 24 made of synthetic resin, which has a bearing portion 24a of the drive shaft 21 and has a water inlet 24b on its circumferential surface, is fitted. A pumping pipe 3 whose length is freely adjustable is attached to this connecting member 24.
1 is fitted and connected, and furthermore, a strainer 32 located at the bottom of the water tank is attached to its lower end.

The drive shaft 21 is composed of an upper cylindrical shaft 25 to which a magnet 5b is fixed, a lower cylindrical shaft 26 that is fitted onto the lower end narrow diameter portion 25a, and a metal core wire 27 that passes through these. A synthetic resin cap 29 is fitted through a slippery ring 28. Thus, the radial impeller 23 is fitted into the lower end narrow diameter portion 26a of the lower cylindrical shaft 26. Further, the upper cylinder shaft 25 and the lower cylinder shaft 26, as well as the lower cylinder shaft 26 and the impeller 23, are rotated integrally by mutual engagement of keys 30, 30 protruding from their respective opposing surfaces. is being done. In addition, each blade piece 23a of the impeller 23 has an upper width smaller than a lower width, and both sides are slightly tapered in order to increase water pumping force.

When the filtration device having the above structure is used, the main body 1 is externally hung on the upper edge of the tank 10 with the locking part 11 fitting over it. As a result, the strainer 32 and the pumping pipe 3
1 is deeply inserted into the water in the aquarium, while the lower part of the water suction pipe 7 is immersed below the water surface, water flows into the inside through the water inlet 24b of the tube mouth member 24 and becomes at the same level as the outside. The radial impeller 23 in the enlarged diameter portion 7b is completely immersed in water. When the motor section 5 is driven here, the drive shaft 21
rotates, and the impeller 23 also rotates together with it, causing the pumping action as described above, and the water in the water tank 10 automatically flows from the water suction pipe 7 through the water conduit 19 to the water conduit 2.
0 into the inside of the filter 9 of the filtration tank 2. Thus, the introduced water passes through the filter 9, and the contained sediments and suspended matter are filtered and separated, and the water becomes clear water, which flows out from the overflow port 14 into the filtered water return path 13 and enters the water tank 10. Return to

In the configuration of the above embodiment, the pump unit 4 is detachable from the main body 1, so the unit 4 can be removed without causing any trouble during cleaning, storage, or transportation, and even if a failure occurs, the pump unit 4 can be removed. There is an advantage that only 4 can be replaced. Further, since the drive shaft 21 and the water suction pipe 7 can be easily disassembled and reassembled, it is possible to clean every detail, and there is no problem in replacing parts, which is advantageous for maintenance. Furthermore, since the flow path area on the inlet side is narrowed down by the connecting member 24 fitted to the lower end of the water suction pipe 7 to be smaller than the flow path area in the upper narrow diameter portion 7a, the water discharged by the radial impeller 23 is This has the effect of suppressing the downward flow of water when it is divided into upper and lower directions, thereby further increasing the lifting power.

In the present invention, various detailed structures such as the structure of the filtration tank and drive shaft, the number of current plates and radial blades, and the shapes of the water conduit and the filtrate return channel are possible.

Effects of the Invention The filtration device according to the present invention allows water in the aquarium to be automatically introduced into the filtration tank through the water suction pipe by simply driving the pump when the filtration device is installed, for example, on the edge of the aquarium as described above. Unlike conventional external filter devices, there is no need for the troublesome operation of filling the water suction pipe with water in advance, and it is easy to handle and operate. Since the pumping force is large due to the above effects, the pump motor can be made smaller than conventional pump motors, and the entire device can be made smaller and energy consumption can be reduced accordingly.

[Brief explanation of drawings]

The drawings show an embodiment of the filtration device according to the present invention, in which FIG. 1 is a perspective view of the whole with the top cover removed, FIG. 2 is a front view of the whole,
Fig. 3 is a left side view of the same, Fig. 4 is a sectional view taken along the - line in Fig. 2, Fig. 5 is a sectional view taken along the - line in Fig. 2, and Fig. 6 is an exploded perspective view of the drive shaft. , FIG. 7 is a cross-sectional view taken along the - line in FIG. 4. DESCRIPTION OF SYMBOLS 1... Box-shaped main body, 2... Filter tank, 5... Motor part, 7... Water suction pipe, 7b... Expanded diameter part, 10...
Water tank, 11...Latching part, 13...Filtered water return path,
19... Water conduit, 20... Water conduit (conduit), 2
1... Drive shaft, 22... Rectifying plate, 23...
radial impeller.

Claims (1)

[Claims] 1. A box-shaped main body that constitutes a filtration tank, a pump motor part that is attached to the main body and located above the water surface of the aquarium in the installed state, and a diameter-enlarged lower part that hangs down from the motor part and is immersed in the water of the aquarium. a water suction pipe having a section formed therein, a drive shaft of a pump motor is disposed concentrically within the water suction pipe, and a radial vane is attached to the drive shaft so as to be located within the enlarged diameter section. A plurality of rectifier plates are formed on the inner circumferential surface of the pipe above the radial vanes along the pipe axis direction, and furthermore, a water conduit from the water suction pipe to the filtration tank and a filtrate return flow path from the filtration tank to the water tank are formed. A filtration device for ornamental fish tanks.