JPS63151322A - Filter apparatus - Google Patents

Abstract

PURPOSE:To prevent the clogging of a water sucking port due to gravel, by a method wherein flanges are integrally provided to the first, second and third suction parts so as to protrude to both lateral sides thereof and water sucking ports are provided to the first, second and third suction parts at positions below said flanges by drilling. CONSTITUTION:When a compressed air supply source 40 is operated, a rising water stream is generated in a suction pipe 16. By this method, the water sucked in a non-purifying chamber 22 from intake ports 30 in a filter case 3 flows through a filter material 21 and flows in a purifying chamber 23 while being purified, and rises in the suction pipe 16 from a suction port 29 to be refluxed to a water tank 1 from a drain port. At this time, the whole water pressure of the depth from the surface of water to the suction port 29 is applied to the suction port 29 and water can be efficiently sucked up and the water flowing in the purifying chamber 23 from the non-purifying chamber 22 passes through the filter material 21 over the entire surface thereof to be efficiently purified.

Description

Detailed Description of the Invention A1 Purpose of the Invention (11 Industrial Application Fields) The present invention is directed to a water tank having a plurality of water intake ports connected to a flow passage formed inside the tank, in order to allow gravel spread in an aquarium to perform a filtration action. The present invention relates to a filtration device that includes a water absorption case that is buried and installed in gravel, and a suction means that is connected to the water absorption case so that water in a flow path flows back to the upper part of an aquarium.

(2) Prior art This device is generally used as a so-called bottom-type filtration device that uses gravel as a filtering medium. Conventionally, a plurality of water intake ports are drilled on the top surface of a flat box-shaped water absorption case. (For example, JP-A-60-172322)
.

(3) Problems to be solved by the invention However, with the above-mentioned conventional method, when burying the water absorption case in gravel, it is difficult to bury the water absorption case in the gravel that is already covered in the aquarium. Therefore, it is necessary to spread gravel from above the water absorption case that has been installed with the gravel removed.

In addition, since the water intake port is directly surrounded by gravel, the water intake port is easily clogged.

The present invention has been made in view of the above circumstances, and is designed to allow the water absorption case to be easily buried in the gravel spread in the aquarium, and to prevent clogging of the water intake port as much as possible. The purpose of the present invention is to provide a filtration device with the following features.

B0 Structure of the Invention (1) Means for Solving the Problems According to the present invention, the water absorption case includes a first suction portion that forms a first flow path and extends in a straight line, and a first suction portion that is orthogonal to the first flow path. A plurality of linear second suction sections are connected to each other at right angles to the first suction section at positions spaced apart from each other in the longitudinal direction of the first suction section, forming a second flow path that communicates with the first suction section; a third suction section that is parallel to the first suction section and is connected to each second suction section at right angles and forms a third flow passage that allows the second flow passages to communicate in common; The second and third suction portions are integrally provided with flanges that extend on both sides thereof, and the water intake port is located below the flanges and is located at the first suction portion. The cross-sectional area of the third flow path is defined to be larger than the cross-sectional area of the first and second flow paths.

(2) Effect 1st. The second and third suction parts are each formed in a straight line, and there is an empty space between them, so the water absorption case can be easily buried in gravel, and the water suction port is located below the brim. Therefore, the water intake port faces the cavity created in the gravel by the brim, and clogging of the water intake port with gravel is prevented as much as possible. In addition, since the cross-sectional area of the third flow path is larger than the cross-sectional area of the first and second flow paths,
Water can be sucked in almost evenly over the entire area of the water absorption case.

(3) Examples Examples of the present invention will be explained below with reference to the drawings.
First, in FIG. 1 showing an embodiment of the present invention, an aquarium 1 for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish is formed in a box shape, and two orthogonal sections of the aquarium 1 are formed. A filter case 3 is attached to a corner portion 2 formed by two wall surfaces 1a and lb. In addition, a water absorption case 5 is buried in the gravel 4 spread inside the aquarium 1 and is placed at the bottom of the aquarium 1.
is installed, and the water purified by flowing through the gravel 4 is guided from the water absorption case 5 into the filtration case 3, and then flows back to the upper part of the aquarium 1 together with the water filtered by the filtration case 3. .

Referring also to FIGS. 2 to 6, the filtration case 3 is made of, for example, synthetic resin and basically has a cylindrical shape, and the cross-sectional shape thereof is A back wall 6 arranged, and a front wall 7 arranged facing the inside of the aquarium 1.
are interconnected to form a closed cross section.

The back wall 6 is formed by connecting a pair of mounting parts 8 and 9 with a connecting part 10, and both the mounting parts 8 and 9 form an angle α between them.
is arranged at an angle slightly larger than the angle formed by the wall surfaces 1a and lb of the water tank 1, that is, 90 degrees, and the connecting portion 10 is formed in a circular arc shape convexly curved toward the front wall 7 side. On the other hand, the front wall 7 is formed in a trapezoidal shape that narrows toward the inside of the aquarium 1, and both ends of the front wall 7 and the outer ends of the mounting portions 8.9 on the back wall 6 are mutually connected. Polymerized and connected.

A top plate 11 is integrally provided at the upper end of the front wall 7 and closes the upper end of the filter case 3 when connected to the back wall 6.
A discharge pipe 12 is provided at approximately the center of the top plate 11 to form a drain port 13, extending upward with its inner end slightly protruding into the filter case 3, and bent inward of the water tank 1. It will be done. Furthermore, plate portions are provided at the lower ends of the front wall 7 and the lower ends of the back wall 6 to form a bottom plate 14 that closes the lower end of the filter case 3 when stacked together, and approximately at the center of the top plate 14. A through hole 15 is bored in the hole 15 .

A suction pipe 16 extending vertically is fixed and arranged approximately in the center of the filter case 3. That is, support plates 17 and 18 are integrally attached to the upper and lower ends of the suction pipe 16, and have a shape corresponding to the cross-sectional inner surface shape of the filter case 3. In this case, support flanges 19 for supporting the support plate 18 are respectively protruded, and the suction pipe 16 is supported by the support flanges 19 with the upper support plate 17 in contact with the top plate 11. is installed inside the filter case 3. Moreover, in this attached state, the inner end of the discharge pipe 12 fits into the upper end of the suction pipe 16, and the suction pipe 16 communicates with the drain port 13.

With the suction pipe 16 attached, a filtration chamber 20 is defined between both support plates 17 and 18 in the filtration case 3, and this filtration chamber 20 is formed by a filter material 21 attached to the suction pipe 16. It is divided into an unpurified chamber 22 on the outer side and a purified chamber 23 on the inner side.

A pair of support arms 24 and 25 protruding toward the connecting portion between the back wall 6 and the front wall 7 are provided at a plurality of locations, for example seven locations, spaced apart in the axial direction of the suction pipe 16. 6
A support arm 26 is provided to protrude toward the connecting portion 10 side. A small-diameter shaft portion 27 extending parallel to the suction pipe 16 is integrally provided at the tip of both support arms 24 and 25, and a small-diameter shaft portion 27 extending parallel to the suction pipe 16 is provided at the tip of the support arm 26, corresponding to the connecting portion 10 on the back wall 6. A locking portion 28 is formed integrally with the connecting portion 10 and both mounting portions 8. It is brought into contact with the inner surface of .9.

The filter material 21 is formed into a rectangular mat shape, and while its longitudinal ends are in contact with the support plates 17 and 18,
It is wrapped around the support arms 24, 25° 26 of the suction pipe 16. That is, the small diameter shaft portion 2 at the tip of both support arms 24°25
7, both ends of the filter medium 21 in the width direction are engaged with the locking portions 28 at the tips of the support arms 26.

By installing the suction pipe 16 with the filter material 21 attached in this way into the filter case 3, the inside of the filtration chamber 20 is divided into an unpurified chamber 22 and a purified chamber 23 over the entire length of the filtration chamber 20, and the suction tube 16 is The tube 16 will be placed within the purification chamber 23. Moreover, a purification chamber 23 is located at the bottom of the suction pipe 16.
A suction port 29 is provided that communicates with the lower part of. Further, in the lower part of the front wall 7 of the filtration case 3, a plurality of water intake ports 30 are formed at intervals in the vertical direction in the form of slits so as to communicate with the lower part of the unpurified chamber 22.

Bottom plate 14 of filter case 3 and support plate 18 of suction pipe 16
A water intake room 31 is defined between 1. This water intake room 31
A plurality of slit-shaped auxiliary water intake ports 32 extending in the vertical direction are provided at the lower part of the front wall 7.

The water intake chamber 31 and the auxiliary water intake port 32 are for guiding a small amount of water that has bypassed the filtration material 21 to the suction pipe 16. When the filtration case 3 is used alone without using the water absorption case 5, the through hole 15 is occluded.

However, when the filtration case 3 and the water absorption case 5 are used together, the connection pipe 33 for guiding water from the water absorption case 5 to the suction pipe 16 is inserted into the lower part of the suction pipe 16 from the through hole 15, and the The water intake port 32 and the water intake chamber 31 do not substantially function.

On the other hand, on the outer surface of the reattachment portion 8.9 in the back wall 6, a pair of recesses 34 are provided vertically at intervals. Suction cups 35 are fixed to these recesses 34 so that their tips project outward beyond the outer surfaces of the attachment parts 8 and 9, respectively.

The connecting pipe 33 has a suction cup 36 at its closed lower end, and is inserted into the lower part of the suction pipe 16 through the through hole 15 while adsorbed to the bottom IC of the water tank 1 by the suction cup 36. Moreover, a connection port 37 is provided on the lower side surface of the connection pipe 33.

In order to suck up water from the purification chamber 23 to the water port 13, the filtration case 3 is provided with a suction means 38, and this suction means 38 connects the suction pipe 16 and It consists of an air injection member 39 disposed at the bottom, an air pump as a pressurized air supply source 40, and a hose 41 connecting the air injection member 39 and the pressurized air supply source 40.

The air injection member 39 is formed into a cylindrical shape from a breathable material such as a foamable synthetic resin, and a connecting pipe portion 42 is integrally provided on the air injection member 39 . One end of a hose 41 is connected to the connecting pipe portion 42, and the hose 4
The hose 41 extends upward inside the suction pipe 16 and is pulled out of the water tank 1 through a take-out hole 43 provided at the top of the discharge pipe 12, and is connected to a pressurized air supply source 40 located outside the water tank 1. The other end is connected.

In the suction means 38, by supplying pressurized air from the pressurized air supply source 40, the air ejected from the air injection member 39 becomes fine bubbles and rises inside the suction pipe 16 and the discharge pipe 12, This creates an upward water flow in the suction pipe 16 and the discharge pipe 12.

Referring also to FIGS. 7 to 10, the suction case 5 is
Upper case 51 and lower case 5 both made of synthetic resin
2 are fitted and connected to each other, - a first suction part 53 extending in a straight line; A plurality of linearly extending second suction portions 54, for example four, are connected at right angles to the suction portion 53, and the second suction portions 54 are commonly connected in parallel to the first suction portion 53 so as to intersect at right angles. 3rd to be done
It consists of a suction section 55.

The upper case 51 is the first case. Second and third suction parts 53.5
The cross-sectional shape of each portion forming 4.55 is formed into a substantially U-shape that is open downward.

Further, the lower case 52 is the first case. Second and third suction section 53
.
The bottom plate portion 56 of the lower case 52 is fitted into the upper case 51. Further, on the inner surface of the upper case 51, protrusions 58 for receiving the upper ends of the bottom plate portions 56 are provided at a distance from each other.

Referring also to FIG. 11, in the portion constituting the first suction section 53, the upper case 51 and the lower case 52 include:
Partition plates 59 and 60 are provided in a protruding manner to abut each other and partition the interior of the first suction section 53 into a plurality of sections. Four first flow passages 61 are formed. Further, a second flow path 62 is formed in each of the second suction portions 54, and the second suction portion 54 connects the second flow path 62 to the first flow path 61 individually. Suction part 53
will be set up consecutively. Further, a third flow passage 63 having a larger cross-sectional area than the first and second flow passages 61 and 62 is formed in the third suction section 55. Each second flow passage 62 is connected to a third flow passage 63. communicated in common.

A flange 64 protruding from both sides of the lower opening edge of the upper case 51
are integrally provided, and water intake ports 65, 66, and 67 are bored in the lower case 52 below the collar 64. That is, in the part corresponding to the first suction part 53, at the connecting part between the bottom plate part 56 and the leg part 57 in the lower case 52, there is a small rectangular water suction port 65 that communicates with the first flow path 61 on both sides of the partition plate 6o. are drilled respectively. Also, the second suction part 5
4, the bottom plate portion 5 of the lower case 52
6 and the leg portion 57, small-diameter water suction ports 66 communicating with the second flow path 62 are bored at a plurality of locations, for example, three locations, spaced apart in the longitudinal direction of the second suction section 54. Furthermore, in the part corresponding to the third suction part 55, at the connecting part of the bottom plate part 56 and the leg part 57 of the lower case 52, there are small diameter holes at a plurality of places, for example three, spaced apart in the longitudinal direction of the third suction part 55. A water intake port 67 is drilled.

The upper case 51 and the lower case 52 have semicircular protrusions corresponding to both longitudinal ends of the first suction section 53 to form short tubular connecting sections 68 and 69 when fitted together. It is installed protrudingly. In addition, semicircular protrusions are provided on the upper case 51 and the lower case 52 corresponding to both longitudinal ends of the third suction part 55 so as to form short tubular connecting parts 70 and 71 when they are fitted together. will be established.

Connection portions 68.6 at both longitudinal ends of the first suction portion 53
A cylindrical cap 7 with a bottom is attached to 9 by tightening the outer periphery.
2 are fitted, respectively, and both longitudinal ends of the first suction section 53 are closed by these caps 72. Further, one end of a flexible tube 73 is fitted and connected to the connecting portion 7o at one longitudinal end of the third suction portion 55 so as to tighten the outer periphery, and the other end of the flexible tube 73 is connected to the connecting portion 7o at one longitudinal end of the third suction portion 55. It is connected by inserting it into the connection port 37 at. Further, a bottomed cylindrical cap 74 is fitted to the connecting portion 71 at the other end of the third suction portion 55 in the longitudinal direction so as to tighten the outer periphery. Therefore, one end of the third flow path 63 in the third suction section 55 communicates with the inside of the connecting tube 33 via the flexible tube 73.

Moreover, the upper case 51 and the lower case 52 have a connecting portion 68
．． 69, and the flexible tube 73 is fitted to the connecting portion 70, and the cap 72 is fitted to the connecting portion 71.
4, the fitted state is maintained.

Next, to explain the operation of this embodiment, when installing this filtration device to the water tank 1, the filtration case 3 and the water absorption case 5 are assembled, and the connecting pipe 33 is connected to the water tank 1.
Fix it to the bottom surface 1c of. That is, by adsorbing the suction cup 36 to the bottom surface 1c, the connecting pipe 33 is placed in an upright position on the bottom surface Ic.
Fix it to C.

Next, the filter case 3 is lowered along the corner part 2 by inserting the connecting pipe 33 into the suction pipe 16 through the through hole 15, and the filter case 3 is fixed to the corner part 2 by the suction cup 35.

The procedure for attaching the filter case 3 to the corner portion 2 will be explained with reference to FIG. 12. First, as shown in FIG. 12 (al),
One mounting portion 8 on the back wall 6 is pressed in the direction of arrow Pa toward one wall surface 1a so that the suction cup 35 is attracted to the wall surface 1a. Next, as shown in FIG. 12(b), the other mounting portion 9 is pressed in the direction of arrow Pb toward the other wall surface 1b, so that the suction cup 35 is attracted to the wall surface 1b.

At this time, the angle α of the remounting parts 8 and 9 is set at both wall surfaces 1a and l.
Since the angle b is larger than the angle formed by b, one of the mounting portions 8 presses its end on the front wall 7 side against the wall surface 1a, and the connecting portion 10 side separates from the wall surface 1a, and the suction cup 35 of the mounting portion 8 and the wall surface 13 The pressure in the closed space between the two is reduced.

Therefore, the adhesion force of the suction cup 35 is increased, and the attachment portion 8 is reliably attached to the wall surface 1a.

When the pressing state of the mounting part 9 is released, the mounting part 9 brings the end of the front wall 7 into contact with the wall surface 1b due to the adsorption force of the suction cups 35 of the eight mounting parts to the wall surface 1a, as shown in FIG. When brought into contact with each other, the connecting portion 10 side becomes separated from the wall surface 1b. As a result, the pressure in the sealed space between the suction cup 35 and the wall surface 1b is reduced in the same manner as described above, and the suction force of the suction cup 35 is increased, so that the attachment portion 9 is reliably attached to the wall surface 1b. Furthermore, in this installed state, the water intake port 30 is positioned above the gravel 4.

In this state, the ends of each mounting portion 8.9 on the back wall 6 on the front wall 7 side are on both wall surfaces la of the aquarium 1.

1b, and the space between the filter case 3 and the corner 2 is closed. Therefore, appreciation 20
.

It is reliably prevented that fish get stuck between the filter case 3 and the aquarium 1 and become stuck.

Next, the water absorption case 5 is installed at the bottom of the aquarium 1.
1st in the water absorption case 5. Second and third suction section 53
, 54 and 55, and since the lower case 52 has a Y-shaped cross section, even if the aquarium 1 is filled with gravel 4, the gravel By pushing the water absorption case 5 into 4,
The water absorption case 5 can be installed extremely easily while being buried in the gravel 4.

After the water absorption case 5 is installed, the flexible tube 73 connected to the water absorption case 5 is inserted into the connection port 37 of the connection tube 33 for connection. This connection operation can be easily performed underwater, and the gravel 4 does not enter the connecting pipe 33.

Note that the order in which the filtration case 3 and the water absorption case 5 are attached may be reversed to that described above.

After this installation is completed, the pressurized air supply source 40 is activated, causing an upward flow of water into the suction pipe 16.

As a result, water sucked into the unpurified chamber 22 from the water intake port 30 in the filtration case 3 flows through the filter material 21 and flows into the purification chamber 23 while being purified, and is further sucked up from the suction port 29. The water rises inside the pipe 16 and returns to the water tank 1 from the drain port 13.

At this time, since the suction port 29 is provided at the bottom of the suction pipe 16, the suction port 29 is
The total water pressure up to the depth is applied, and water can be efficiently sucked up, and the water flowing from the unpurified chamber 22 into the purification chamber 23 flows over the entire surface of the filter medium 21 and is efficiently purified.

On the other hand, in the water absorption case 5 as well, as the rising water flow occurs in the suction pipe 16, a water flow is generated from the first flow path 61 to the third flow path 63 via the second flow path 62, and the gravel 4 The purified water flows through each water intake port 65, 66, 67
From 1st. It flows into the second and third flow passages 61 , 62 , 63 , passes through the flexible tube 73 and the connecting tube 33 , and is sucked up by the suction tube 33 .

At this time, each water intake port 65, 66, 67 is arranged below the collar 64, so that it faces the cavity formed in the gravel 4 by the collar 64. Moreover, since each of the water intake ports 65 to 67 is formed to be relatively small, clogging of each of the water intake ports 65 to 67 due to gravel 4 being clogged is prevented as much as possible.

In addition, since the third flow passages 63 of the 16 suction pipes are formed with a relatively large cross-sectional area, the flow loss along the longitudinal direction is extremely small, and they are connected to each other in pairs. To make the amount of water flowing through the first and second flow passages 6L62 equal, to equalize the amount of water flowing through gravel 4 over a wide area, and to efficiently filter water by using gravel 4 over a wide area. I can do it.

In this way, the water in the aquarium 1 can be sufficiently filtered by combining the filtration using the gravel 4 and the filtration using the filter material 21 in a well-balanced manner. Moreover, the water rising inside the suction pipe 16 is composed of water purified by the filter material 21 and gravel 4.
Therefore, the speed at which the water flowing in from the water intake port 30 in the filter case 3 flows through the filter medium 21 can be adjusted to an appropriate value to promote the reproduction of chlorella and aerobic microorganisms. This aerobic microorganism decomposes organic matter such as leftover food and feces of ornamental fish, thereby preventing clogging of the filter medium 21, and making it possible to provide chlorella and the like as live food for ornamental fish.

FIG. 13 shows another embodiment of the present invention, in which two water absorption cases 5, 5 are installed at the bottom of the water tank 1 in a manner that they are connected to each other. That is, the connection part 69 of the first suction part 53 in one water absorption case 5 and the connection part 68 of the first suction part 53 in the other water absorption case 5 are connected to each other by the connecting pipe 75, The connection part 71 of the third suction part 55 in the third suction case 5 and the connection part 70 of the third suction part 55 in the other water absorption case 5 are connected to each other by a connecting pipe 76.

In this way, a plurality of water absorption cases 5 are arranged according to the area of the water tank 1.
can be interconnected to adjust the filtration area by the gravel 4.

C3 Effects of the Invention As described above, according to the present invention, the water absorption case includes a first suction portion that forms a first flow path and extends in a straight line, and a second flow path that communicates orthogonally with the first flow path. a plurality of linear second suction parts arranged perpendicularly to the first suction part at positions spaced apart from each other in the longitudinal direction of the first suction part; a third suction section that is connected to the suction section at right angles and forms a third flow passage that allows the respective second flow passages to communicate in common; The second and third suction portions are integrally provided with flanges that extend on both sides thereof, and the water intake port is located below the flanges and is located at the first suction portion. Since it is drilled in the second and third suction parts, it is possible to prevent each water suction port from being directly surrounded by gravel and prevent clogging as much as possible, and also to prevent the water suction case from being pushed into the gravel. The water absorption case can be easily installed by being buried in the gravel spread. Further, since the cross-sectional area of the third flow path is larger than the cross-sectional area of the first and second flow paths, water can be sucked in almost uniformly over the entire area of the water-absorbing case.

[Brief explanation of the drawing]

1 to 12 show one embodiment of the present invention. FIG. 1 is an overall perspective view, FIG. 2 is an enlarged view taken along line nn of FIG. 1, and FIG. Figure 4 is a sectional view taken along the line mm-m in the figure.
Figure 5 is an enlarged sectional view taken along the line IV-IV in the figure, and Figure 5 is V-V in Figure 3.
A line enlarged sectional view, FIG. 6 is a vr-v X-line sectional view of FIG. 4,
Figure 7 is a bottom view of the water absorption case, and Figure 8 is from ■-■ in Figure 2.
9 is a cross-sectional view taken along line IX-IX in FIG.
Figure 0 is a sectional view taken along the line X-X in Figure 2, Figure 11 is a partially enlarged perspective view of the water absorption case, Figure 12 is a sectional view corresponding to Figure 4 showing the procedure for installing the filtration case, and Figure 13. FIG. 3 is a plan view of another embodiment of the present invention. 1...Aquarium, 4...Gravel, 5...Water absorption case, 3
8... Sucking means, 53... First suction part, 54...
・Second suction part, 55...Third suction part, 61...First
Flow path, 62...Second flow path, 63...Third flow path, 64...Brim, 65-67...Water intake Figure 1 Figure 4 Figure 11 Figure 12

Claims (2)

[Claims] (1) A water absorption case that is buried and installed in the gravel and has multiple water intake ports connected to a flow path formed inside the water tank, in order to allow the gravel spread inside the aquarium to perform a filtration action, and the inside of the flow path. In the filtration device, the water absorption case includes a first suction section extending in a straight line forming a first flow path, and a suction means connected to a water absorption case to circulate the water to the upper part of the aquarium. a plurality of linear second suction sections that form a second flow path that communicates orthogonally to the flow path and are connected to the first suction section at right angles at positions spaced apart from each other in the longitudinal direction of the first suction section; , a third suction part that is parallel to the first suction part and connected to each second suction part at a right angle, and forms a third flow passage that allows the second flow passages to communicate in common; Second
The third suction part is integrally provided with a collar that extends on both sides thereof, and water intake ports are bored in the first, second, and third suction parts at a position below the collar, and the third flow passage is provided with a water inlet. The cross-sectional area is the first
and a filtration device characterized in that the cross-sectional area is larger than the cross-sectional area of the second flow path. (2) The lower portions of the first, second, and third suction parts in the water absorption case are formed to have a substantially Y-shaped cross section. filtration device.