JPS61107914A - Filter - Google Patents

Abstract

PURPOSE:To reduce the weight and make smooth water flow possible by dispensing with the provision of gravel inside for easier cleaning and preventing the confinement of bubbles. CONSTITUTION:The water flowing upward through a water discharging pipe 8 is generated in a clean water chamber 7 by injecting air from an air jet cylinder 34. In response to this flow generation, water flow occurs from a water suction hole 29 to the clean water chamber 7 through an unclean water chamber 4, a filter 5 and a purification chamber 6. Consequently, the water filtrated by gravel 3 is further filtrated by the filter 5, returning to a water tank 1. In addition, a casing 9 is stable by filling gravel 3 in a concave part for storage 22. If gravel 3 is not filled in the concave part for storage 22, the casing 9 becomes light so that it is easily packed and transported. A cover 11 is an inverted funnel which allows no confinement of bubbles in the casing 9. In turn, a smooth water flow can be realized and the casing 9 taken out from gravel and cleaned.

Description

DETAILED DESCRIPTION OF THE INVENTION A6 Object of the Invention (1) Field of Industrial Application The present invention relates to a filtration device installed at the bottom of an aquarium by at least partially burying it in gravel spread inside the aquarium.

(2) Conventional technology Such filtration devices are generally made of synthetic resin,
Since it is lightweight, gravel or the like has conventionally been incorporated in order to stably bury at least a portion of it in the gravel. In order to absorb water from a relatively wide area and filter it, conventionally, a thin box-shaped casing is buried in the gravel.

(3) Problems to be Solved by the Invention The conventional filtration device described above is inconvenient because it contains gravel and the like, which requires extra labor for the weight of the gravel during packaging and transportation. Further, when cleaning the filter medium when it becomes clogged, it is difficult to pull out the casing from the gravel, making the cleaning work complicated. Furthermore, air bubbles tend to accumulate inside the casing, and the air bubbles impede the smooth flow of water.

The present invention was made in view of the above circumstances, and aims to reduce the weight by avoiding the inclusion of gravel, etc., and also facilitates cleaning work and prevents the accumulation of air bubbles to allow smooth flow of water. The purpose of the present invention is to provide a filtration device that has the following characteristics.

B0 Structure of the Invention (1) Means for Solving Problems According to the present invention, a dish-shaped bottom cover is provided with an inverted funnel-shaped cover that becomes narrower toward the top and is integrally provided with a drain pipe portion at the upper end. The casing is constructed by removably fitting together.
A support tube is integrally provided at the center of the bottom cover below the drain tube, and inside the casing there is a clean water chamber in the center that is connected to the drain tube by a partition plate, and a filtration chamber around the casing. In the filtration action chamber, an unpurified chamber is defined between the inner surface of the cover and the inner surface of the cover by a filtration material, and a purification chamber communicating with the clean fluid chamber is defined on the inner side, and the upper end of the support cylinder part An air injection cylinder is mounted facing the purified water chamber, and a supply cylinder for supplying pressurized air is connected to the air injection cylinder, and the cover has a plurality of water intake cylinders communicating with the unpurified chamber. A hole is drilled therein, and a cylindrical wall is integrally provided at the lower periphery of the cover to define an annular storage recess for storing gravel between the cover and the outer surface of the cover.

(2) Function By injecting air from the air injection tube, a water flow is generated in the clean water chamber that flows upward inside the drain tube, and accordingly, water flows from the water intake hole through the unpurified chamber, the filter material, and the purification chamber. A water flow is generated that reaches the clean water chamber, and the water that has been filtered through the gravel is further filtered through the filter material and returned to the aquarium. Moreover, by storing gravel in the storage recess, the posture of the casing is stabilized, and if gravel is not placed in the storage recess, the casing becomes lighter, which is convenient for packaging and transportation. Furthermore, since the cover is shaped like an inverted funnel, air bubbles do not accumulate inside the casing, allowing for smooth water flow and making it easy to lift the casing out of the gravel for cleaning.

(3) Example Hereinafter, an example of the present invention will be explained with reference to the drawings. First, in FIG. gravel 3
It is installed buried inside.

The water in the water tank 1 is transferred from the unpurified chamber 4 of the filtration device 2 to the filter medium 5
The water passes through the water and is sucked into the purification chamber 6, and is then returned from the clean water chamber 7 to the water tank 1 through the drain pipe section 8.
Prevent water pollution inside.

Referring to FIGS. 2 and 3 together, the casing 9 of the filtration device 2 is constructed by removably fitting a bottom lid 10 made of synthetic resin and a cover 11 made of synthetic resin. Bottom cover 10
The cylindrical portion 13 is integrally provided on the outer peripheral edge of an octagonal bottom plate 12, and the bottom plate 12 is formed to be slightly raised upward toward the center. In the center of the bottom lid 10, there is a support cylinder part 14 whose upper end is closed and whose lower end is open.
is provided integrally protruding upward. A fitting cylinder part 15 is integrally provided on the upper surface of the upper end of the support cylinder part 14, and a connecting cylinder part 16 communicating with the inside of the fitting cylinder part 15 is integrally provided on the lower surface of the upper end. Further, a protrusion 17 is provided on the outer surface of the support tube 14 over the entire circumference.

The cover 11 becomes narrower as it goes upward, and has a cylindrical portion 19 into which the cylindrical portion 13 of the bottom lid 10 can be fitted, at the lower end periphery of the funnel-shaped cover body 1B formed in a hexagonal shape corresponding to the bottom lid 10. The drain tube part 8 is integrally provided at the upper end of the cover main body 18. Furthermore, when the cylindrical portion 13 of the bottom cover 10 is fitted to the inner surface of the lower end of the cylindrical portion 19,
A plurality of locking protrusions 20 that engage with the bent portion of the cylindrical portion 13 are provided in a protruding manner. Furthermore, a cylindrical wall portion 21 that extends upward and is connected to the cylindrical portion 19 is integrally provided on the lower end peripheral edge of the cover main body 18, and this cylindrical wall portion 21 and the cover main body 1
8, there is an annular storage recess 22 open upwardly.
is defined. Gravel 3 is stacked and stored in the storage recess 22 when the filter device 2 is installed in the aquarium 1.

A synthetic resin partition plate 24 is installed inside the casing 9 to divide the inside of the casing 9 into a clean water chamber 7 in the center and a filtration chamber 23 around it.

The partition plate 24 is formed in the shape of a truncated cone with a hexagonal cross section that becomes larger in diameter toward the top, and its smaller diameter end passes over the protrusion 17 and fits into the support cylinder part 14 of the bottom cover 10. The large diameter end is brought into contact with the inner surface of the cover main body 18.

Eight support frames 25 are fixed to the upper surface of the bottom plate 12 of the bottom cover 10 in a radial manner toward each vertex of the octagonal bottom plate 12. Moreover, the upper surface of each support frame 25 is covered by the cover body 18.
It is tilted around 1 so as to form a certain gap between the inner surface and the inner surface. In addition, locking claws 26 are provided in the lower inner surface of the cylindrical portion 13 at the center between the support frames 25, respectively. On the other hand, fitting holes 27 are bored in the partition plate 24 to correspond to the respective support frames 25, and the upper ends of each support frame 25 are respectively fitted into the fitting holes 27 when the partition plate 24 is attached. Furthermore, a locking pawl 28 is provided protruding from the lower outer surface of the partition plate 24 in correspondence with the locking pawl 26 .

A filtering medium 5 is housed in the filtering chamber 23 .

This filtering material 5 is formed in a band shape, and is bent inwardly between each support frame 25 to form a wavy peripheral wall, and is supported by the support frame 25. Moreover, the inwardly bent portion of the filter medium 5 is locked by the locking claws 26,28. In this way, the support frame 25
The filter material 5 supported by
As a result, the inside of the filtration chamber 23 is divided into an unpurified chamber 4 facing the inner surface of the cover main body 18 and a purified chamber 6 inside.

The cover main body 18 is provided with a plurality of water absorption holes 29 in two rows, upper and lower, which communicate with the unpurified chamber 4.
A plurality of communication holes 30 are provided to communicate between the clean water chambers 7 and the clean water chambers 7. Furthermore, the large-diameter end face of the partition plate 240 has a +7a notch 3 for defining a relief hole 31 communicating between the unpurified chamber 4 and the clean water chamber 7 with the inner surface of the cover main body 18.
2 is provided. Furthermore, the support cylinder part 1 in the bottom cover 10
A plurality of air escape holes 33 are bored at the upper closed end of the air conditioner 4 .

A cylindrical air injection cylinder 34 made of a breathable material such as foamable synthetic resin and having a closed upper end is fitted into the fitting cylinder part 15 at the upper end of the support cylinder part 14 . On the other hand, the supply cylinder 35 is connected to the connecting cylinder part 16 from the lower side of the bottom cover 10. This supply cylinder 3
5 is connected to an air supply source (not shown), but the supply cylinder 3
5 to the side, a concave portion 36 is provided on the lower surface of the bottom plate 12 of the bottom cover 10 and has a shape corresponding to the feed cylinder 35 and is convexly recessed upward.

Next, to explain the operation of this embodiment, the filtration device 2
is installed at the bottom of the aquarium 1, which is covered with gravel 3,
At this time, the lower part of the casing 9, that is, the upper water absorption hole 29
is installed so that it is buried in the gravel 3 to the extent that it is located above the layer surface of the gravel 3, and the gravel 3 is also layered in the storage recess 22.
It will be stored.

The gravel 3 in the storage recess 22 functions as a weight, so that the filtration device 2 can stably maintain its lower part buried in the gravel 3.

When pressurized air is supplied from the air supply source to the air injection cylinder #J34 through the supply cylinder 35 while installed in the water tank 1, pressurized air is ejected from the air injection cylinder 34 in the form of bubbles. This ejected air rises within the clean water chamber γ and further rises within the discharge cylinder portion 8. Along with this, the water in the clean water chamber 7 also rises and is discharged into the water tank 1 from the drain pipe section 8. As a result, a water absorption force is generated in the clean water chamber 7, and a part of the polluted water in the water tank 1 passes through the gravel 3, passes through the water absorption hole 29, passes through the unpurified chamber 4, passes through the filter material 5, and is further purified. The clean water flows from the chamber 6 through the communication hole 30 into the clean water chamber 7 . Therefore, the polluted water is first filtered through the gravel 3 and then filtered through the a filter material 5 to be purified. Further, some of the polluted water flows into the clean water chamber 7 from the upper water suction hole 29 and circulates therein.

During such a filtration action, since the cover 11 is formed in an inverted funnel shape, air bubbles generated in the casing 9 are released upwards without accumulating on the inner surface of the cover 11, allowing a smooth flow of water. Unobstructed by air bubbles, smooth water flow improves filtration efficiency.

By the way, if the speed of water flowing through the filter medium 5 is high, the growth of aerobic microorganisms that like chlorella and bacteria that decompose organic matter in the filter medium 5 will be inhibited, so water may flow into the unpurified chamber 4. A part of the water that has come is sent to the clean water chamber 7 through the escape hole 31.
will be missed. As a result, the speed of water flowing through the filter medium 5 becomes a speed suitable for the reproduction of the aerobic microorganisms, and the aerobic microorganisms decompose organic matter such as leftover food and feces that adhere to the filter medium 5, thereby preventing clogging. In addition to preventing this, chlorella etc. can also be provided as live food for ornamental fish in the aquarium 1.

Furthermore, since the air release hole 33 is provided at the upper end of the support tube 14, air accumulated below the bottom cover 10 can be released upward. Furthermore, the water that has passed through the gravel 3 and reached the bottom of the bottom cover 10 can be sucked into the clean water chamber γ through the air vent hole 33 and circulated.

Such a filtration device 2 is only partially protruded above the gravel 3 when installed in the aquarium 1 and is inconspicuous, so it is not suitable for use in the aquarium 1 for ornamental fish. Also, when the filter material 5 becomes clogged, the casing 9
To clean the inside, the casing 9 can be easily disassembled by pulling it up from the gravel 3 and separating the bottom lid 10 and the cover 11 from each other, and the inside of the casing 9 can be cleaned easily.

It is also possible to connect a pipe to the drain pipe portion 8 to guide the waste water close to the water surface in the aquarium.

C0 Effects of the Invention As described above, according to the present invention, a reverse funnel-shaped cover that becomes narrower toward the top and is integrally provided with a drain pipe portion at the upper end is removably fitted to the dish-shaped bottom cover. A casing is constructed, and a supporting cylinder part is integrally protruded from the center of the bottom cover below the drain cylinder part, and a clean water chamber in the center connected to the drain cylinder part is inside the casing by a partition plate. , and a filtration chamber around the filtration chamber, in which an unpurified chamber is defined between the inner surface of the cover and the filtration chamber, and a purification chamber communicating with the clean fluid chamber is defined on the inside side; An air injection cylinder is attached to the upper end of the front support part facing the clean water chamber, and a supply cylinder for supplying pressurized air is connected to the air injection cylinder, and the cover is attached to the unpurified water chamber. A plurality of water absorption holes are drilled to communicate with the outer surface of the cover, and a cylindrical wall portion is integrally provided at the lower edge of the cover to define an annular storage recess for storing gravel between the outer surface of the cover and the outer surface of the cover. This makes it possible to improve filtration efficiency by realizing a smooth flow of water without causing air bubbles to accumulate inside the casing, and also to easily carry out cleaning work by pulling the casing out of the gravel. Furthermore, by putting gravel into the storage recess, the casing can be stably installed in the gravel, and when no gravel is put in, the weight is reduced, making it convenient for packing and transportation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a vertical cross-sectional view showing the state installed in an aquarium, and is taken along I-I in FIG.
2 is a partially cutaway cross-sectional plan view of FIG. 1, and FIG. 3 is an enlarged exploded perspective view. 1...Aquarium, 2...Filtering device, 3...Gravel, 4...
... unpurified room, 5... filter material, 6... purification room, 7.
...Clean water chamber, 8...Drain tube part, 9...Casing, 1o...Bottom cover, 11...Cover, 14...Support cylinder part, 21...Cylindrical wall part, 22...Storage recess, 23
...filtration chamber, 34...air injection cylinder, 35...
supply cylinder

Claims (1)

[Claims] In a filtration device that is installed at the bottom of an aquarium by being at least partially buried in gravel spread inside the aquarium, the dish-shaped bottom lid becomes narrower toward the top and is integrally equipped with a drainage tube part at the upper end. A casing is constructed by removably fitting an inverted funnel-shaped cover, a supporting cylinder is integrally provided at the center of the bottom cover below the drain cylinder, and a partition plate is provided inside the casing to prevent the drainage from occurring. It is divided into a clean water chamber in the center connected to the cylindrical part and a filtration chamber around it, and inside the filtration chamber, an unpurified chamber is defined between the inner surface of the cover by a filter material and a clean fluid chamber. A communicating purification chamber is defined on the inner side, and an air injection tube is attached to the upper end of the support tube facing the clean water chamber, and the air injection tube is equipped with a supply tube for supplying pressurized air. is connected to the cover, a plurality of water absorption holes communicating with the unpurified chamber are bored in the cover, and an annular storage recess for storing gravel is defined between the outer surface of the cover and the lower edge of the cover. A filtration device characterized in that a cylindrical wall portion is integrally provided.