JPH0741131B2 - Water conduit made of synthetic resin in filtration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Purpose of the Invention (1) Field of Industrial Application The present invention relates to a water conduit in a filtering device provided in a tank for breeding ornamental fish and the like.

(2) Conventional Technology The water conduit of the conventional filtration device is erected at the corner of the filter laid on the bottom surface of the water tank, and the air pipe connected to the air pump at the lower end of this water conduit and introduced into the water tank. The outer ends of the are connected (see Japanese Utility Model Publication No. 56-48327).

(3) Problems to be Solved by the Invention In the above-mentioned conventional device, since the water conduit that communicates between the inside of the water tank and the filter is separated from the corner of the water tank, ornamental fish and the like are separated from the wall surface of the water tank and the water conduit. There is a problem that it may become stuck between them and may not be able to move, and that it may be detached from the water tank due to insufficient mounting in the water tank, and that the appearance may be impaired.

Therefore, in order to solve such a problem, for example, JP-A-62-5
As shown in Japanese Patent No. 7621, the water guide pipe has a closed cross-sectional structure having a pair of mounting surfaces along both side surfaces of the water tank corner, and basically has a triangular cross section, and both mounting surfaces are used for the suction force of the suction cup. Based on this proposal, a structure has been proposed in which both side surfaces of the water tank corner are brought into close contact with each other.However, in this proposal, since both the mounting surfaces of the water conduit having a closed cross-section and being sturdy do not substantially elastically deform, Due to distortion due to molding error of the mounting surface, molding error at the side surface of the water tank corner portion, distortion due to water pressure, etc., it becomes difficult to uniformly adhere the mounting surface to the side surface of the water tank corner portion in the entire vertical direction. There are cases. Further, in the above-mentioned proposal, since the suction cups can be mounted only at fixed positions above and below each mounting surface, the mounting positions and the number of the suction cups are limited, and the mounting strength of the water conduit to the water tank is strengthened. It is difficult to deal with cases where it is desired to change the suction site of the suction cup.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a synthetic resin water conduit for a filtration device, which can solve all the problems of the conventional device.

B. Configuration of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention is mounted on both side surfaces of a corner portion in a box-shaped water tank by suction cups to connect the inside of the water tank and a filter. In a synthetic resin water conduit in a filtering device, which is interposed in a communicating water circuit, a hollow cylindrical water conduit extending vertically along the corner, and on both outer surfaces of the water conduit in the longitudinal direction. A pair of suction cup attachment portions that extend integrally along the suction cup and can attach the suction cups at arbitrary positions in the longitudinal direction, and substantially tangentially to both sides of the outer surface of the water guide portion so as to cover the suction cup attachment portions with a gap. Has a pair of flat plate-shaped shielding wall portions that are integrally cantilevered to each other, and the free edges of the pair of shielding wall portions have corresponding side surfaces of the corner portion due to the suction force of the suction cups. It is characterized by being closely attached to each.

(2) Operation According to the above-mentioned configuration, the water guiding pipe provided in the water circuit that communicates between the inside of the water tank and the filter is accurately attached to both side surfaces of the corner portion of the water tank via the suction cups. Moreover, the suction cup mounting part is
Since the suction cups can be installed at any position in the length direction of the water conduit, and in any number, it is possible to increase the mounting strength of the water conduit to the water tank or change the suction site of the suction cup. It is possible.

In addition, in particular, a pair of flat plate-shaped shielding wall portions are integrally extended from the outer surface of the hollow cylindrical water guiding portion of the water conduit on both sides in a substantially tangential direction, and each free edge of each shielding wall portion is attracted by the suction force of the suction cup. Since it was made to closely contact the side of the water tank corner,
Even if there are distortions due to molding errors such as the shielding wall, molding errors on the side of the water tank corners, and distortions due to water pressure, etc., each cantilevered flat synthetic resin body is relatively easy to elastically deform. The free edge of the wall can be brought into close contact with the side surface of the water tank corner over the entire area in the vertical direction, and if the shielding wall is sufficiently elastically deformed at the initial stage of installation, the suction cup It is possible to effectively prevent the formation of a gap between the free end edge of each blocking wall portion and the side surface of the water tank corner portion even if the suction force is reduced due to the settling.

(3) Example Hereinafter, one example of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view of a water tank equipped with the water conduit of the present invention.
FIG. 2 is an enlarged plan view taken along the line II-II in FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG.
FIG. 5 is a perspective view of the water discharge pipe and the joint, and FIG.
Fig. 6 is a partial cross-sectional view taken along line -V, and Fig. 6 is a partial cross-sectional view taken along line VI-VI in Fig. 3. In these drawings, an aquarium T for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish. Is formed in a box shape, and the bottom face filtration device F provided in the water tank T is connected to the bottom face filter 1 laid on the bottom surface thereof and the water absorption outlet thereof and The water conduit assembly 2 attached to one corner C.

First, the structure of the water conduit assembly 2 will be described in detail. As shown most clearly in FIG.
Is composed of a water conduit 3 and a water discharge pipe 4 which is connected to an upper end of the water conduit 3 via a joint 5 so as to be rotatable about a vertical axis. The water conduit 3 is composed of a hollow cylindrical body with both ends open.
And a pair of suction cup mounting portions 7 and 7 that are symmetrically projected over the entire length of the water guiding portion 6 over the entire length thereof, and have a wing shape and a piece on both sides in a substantially tangential direction from the outer surface of the water guiding portion 6. Consists of a pair of flat plate-shaped shielding wall portions 8 that project in a holding state,
Each of the shielding wall parts 8 has the suction cup mounting parts 7, 7 and a corner part C.
It covers through the gaps 14 and 14 that extend vertically along
Further, the tip edge of each of the shielding wall portions 8, that is, the free edge 8a is
As will be described later, by the suction force of the suction cup 10, the water tank corner C
Are closely attached to the corresponding side surfaces 11 ₁ and 11 ₂ , respectively. The water guiding part 6, the pair of suction cup mounting parts 7, 7 and the shielding wall part 8 are
Both are made of a hard synthetic resin material, and these can be integrally molded by extrusion, pultrusion or injection molding.

The pair of suction cup mounting portions 7,7 are respectively formed with slide grooves 9,9 having a concave cross section, and in these slide grooves 9,9, suction cups 10 made of an elastic material such as rubber are freely formed. These suckers are removably fitted so that their position can be adjusted.
The water conduit 3 is adsorbed and supported on the inner surface of the corner C formed by _two side surfaces 11 ₁ and 11 ₂ of the water tank T which are orthogonal to each other.

Further, the free end edges 8a of the pair of shielding wall portions 8 have an angle α formed by _two imaginary lines l ₁ and l ₂ (FIG. 6) along their tip surfaces.
(Fig. 6) is slightly larger than the angle between the side surfaces 11 ₁ and 11 ₂ of the corner C of the water tank T, that is, 90 degrees.

The elbow-shaped water discharge pipe 4 is connected to the upper end of the opening of the water conduit 6 via the joint 5 as described above. On the lower surface of the joint 5, a pair of insertion pieces 12, 12 and an arc-shaped engagement piece 13 are provided so as to project downward, and each insertion piece 12 is provided with a space 14 between the suction cup attachment portion 7 and the shielding wall portion 8. The joint 5 is connected to the upper end of the water guiding portion 6 by inserting the engaging piece 13 into the outer peripheral surface of the water guiding portion 6 and inserting the engaging piece 13 into the outer surface of the water guiding portion 6. Further, an insertion ring 15 is provided on the upper surface of the joint 5, and the water discharge pipe 4 is engaged with the insertion ring 15 so as to be rotatable about the vertical axis.

As shown in FIG. 3, an air supply pipe 16 having a porous air stone 17 connected to the lower end thereof is inserted into the water guide section 6,
The upper part of the air supply pipe 16 passes through the water discharge pipe 4, and is projected to the outside through a through hole 18 formed in the upper wall thereof.

The upper end 16 ₁ of the air supply pipe 16 is formed larger than the through hole 18 so that the air supply pipe 16 does not sink into the water guide section 6.

A flexible pipe 19 is connected to the upper end of the air supply pipe 16, and an air pump P is connected to the outer end of the pipe 19.

The lower end of the water conduit 3 is detachably connected to the water inlet 28 of the bottom filter 1 via an L-shaped connecting pipe 20 having a flexible portion 21.

Next, referring to FIG. 2 and FIG. 7 to FIG. 11 together, the structure of the bottom filter 1 will be described. FIG. 7 is its bottom view, and FIG. 8 is FIG. A sectional view along the line, FIG.
8 is a sectional view taken along line IX-IX, FIG. 10 is a sectional view taken along line XX of FIG. 2, and FIG. 11 is an exploded perspective view of the flow dividing portion. This bottom filter 1 is gravel that is spread in the water tank T.
The water absorbing frame 24, which is embedded in the gravel 23 and is used to cause the gravel 23 to function as a filter medium, has a first and second water absorbing pipes 25, 26 which are parallel to each other and which form a main part of the filter 1. When,
A plurality of cross water absorption pipes 27 that connect the pipes 25 and 26 are formed into a closed rectangular frame, and one end of the first water absorption pipe 25 is opened to serve as a water absorption outlet 28. The other end of the water absorption pipe 25 and the second water absorption pipe 26
Both ends of each are closed by closure caps 29 and 30, 31, respectively. On the lower surface of the water absorbing frame 24, a supporting flange 32 is provided so as to project downward along the first and second water absorbing pipes 25, 26 and a plurality of cross water absorbing pipes 27. When the container 1 is laid on the bottom surface 33 of the water tank T, the water channel gap 34 is maintained between the water absorbing frame 24 and the bottom surface 33 of the water tank T. The bottom walls of the first and second water absorption pipes 25 and 26 and the plurality of cross water absorption pipes 27 ... Are formed in a V-shaped cross section, and a plurality of suction holes are formed at their lower portions at intervals in the longitudinal direction. Mouths 35 ……, 36 ……, and 37 …… are lined up. Second
The suction ports 36 lined up in the water suction pipe 26 are located at the intermediate positions between the two adjacent cross water suction pipes 27, 27 and are larger than the other suction ports 35. It is formed in a quadrangle. A branch wall 38 integrally formed with the second water suction pipe 26 is provided in the middle portion above the suction ports 36 ....
₁ , 38 ₂ are crossed, whereby the suction ports 36 ... Are branched into two in the longitudinal direction of the second water suction pipe 26.
Therefore, the second water suction pipe 26 passes through the suction port 36.
The water that has flowed in is branched by the branch walls 38 ₁ and 38 ₂ and is branched in the longitudinal direction thereof, and flows evenly to the plurality of cross water absorption pipes 27.

Next, the operation of this embodiment will be described.

As shown in FIG. 3, the bottom filter 1 is embedded in the gravel 23 laid on the bottom of the water tank T and laid on the bottom 33 thereof, while the water conduit assembly 2 has the air supply pipe 16 inserted therein. In this state, it is attached to one corner C in the water tank T. The attachment of the water conduit 6 of the water conduit 3 to the corner C is performed as follows. One or a plurality of suction cups 10 ... Are attached to the slide grooves 9, 9 of the pair of suction cup attachment portions 7, 7 of the water guide section 6 from the upper or lower open end thereof. In this case, each suction cup 10 is frictionally held at an appropriate position in the slide groove 9 due to its elasticity. Side 11 ₁ of the water tank T to the suction cup 10 ...... then,
11 ₂ is adsorbed, firstly suckers 10 of the one suction cup mounting portion 7
The suction cup 10 is pressed toward the one side surface 11 ₁ of the water tank T is such that adsorbed to the side surface 11 _1. Then suction plate 10 so as to adsorb to the side surface 11 ₂ suckers 10 of the other suction cup mounting portion 7 is pressed toward the other side surface 11 ₂ of the tank T.

In this case, even if there is a distortion due to a molding error of the shielding wall portion 8 or the like, a molding error of the side surfaces 11 ₁ and 11 ₂ of the water tank corner portion C, or a distortion due to water pressure, etc., the plate-shaped synthetic resin in a cantilever state. Each of the shielding wall portions 8 which are relatively easily elastically deformed in the body has an angle α formed by _two imaginary lines l ₁ and l ₂ passing through the end faces of their free edges 8a on both side surfaces of the corner portion C of the water tank T. 11 _1, I 11 ₂ included angle (90 °) slightly larger and also phase俟than over its vertically throughout the end face of the free edge 8a on the side surfaces 11 _1, 11 ₂ of the tank corner C Since they can be brought into close contact with each other uniformly, there is no concern that ornamental fish will be caught between the water conduit 3 and the water tank V. Moreover, the suction cup 10 and the suction cup attachment portion 7 are shielded by the shielding wall portion 8 and can be seen from the outside. In addition, the appearance is very good, and it is also effective for preventing rattling of the water conduit 3. In addition, if the shielding wall portions 8 are sufficiently elastically deformed at the initial stage of mounting, the free end edges 8a of the shielding wall portions 8a may be reduced due to a decrease in suction force due to the subsequent settling of the suction cups 10.
It is possible to effectively prevent a gap from being formed between the side surfaces 11 ₁ and 11 ₂ of the water tank corner portion C.

An air pump P is connected to the air supply pipe 16 via a flexible air pipe 19.

If the air pump P is operated now, the pressurized air is sent under pressure through the air supply pipe 16 to the porous air stone 17. As a result, the pressure air becomes bubbles from the air stones 17 and is discharged into the water guiding pipe 3 to rise inside the water guiding pipe 3 to generate a rising water flow in the water guiding pipe 3. This rising water flow causes water to flow from the filter 1 toward the water conduit 3, so that the water in the water tank T is
After being filtered through the gravel 23 which acts as a filter medium as shown by the arrow in the figure, a large number of suction ports at the bottom of the bottom filter 1 are provided.
35 ……, 36 ……, 37 …… and flow into the filter 1,
Then, it flows to the water conduit 3 through the L-shaped connecting pipe 20, and is returned to the water tank T from the water discharge pipe 4.

In the above embodiment, the case where the water conduit is provided in the water circuit that connects the bottom filter and the inside of the water tank has been described, but this water conduit connects the conventionally known top filter and the inside of the water tank. It may be installed in the water circuit, in which case the water from the upper filter flows from the top to the bottom in the water conduit and is returned to the water tank.

Further, the bottom filter is not limited to the one in the above-mentioned embodiment, and it is possible to use one having another conventionally known structure. For example, a strainer made of mesh can be connected to the lower end of the water conduit. .

Further, although the air supply pipe is inserted into the water guide pipe in the above-mentioned embodiment, it goes without saying that the water guide pipe may be used only as a passage for water.

C. Effects of the Invention As described above, according to the present invention, the water conduit pipe interposed in the water circuit communicating between the water tank and the filter is a hollow cylindrical water conduit that extends vertically along the water tank corner portion. Section and a pair of suction cup attachment sections that extend integrally along the longitudinal direction on both outer surfaces of the water guiding section and can attach suction cups at arbitrary positions in the vertical direction. Since the suction cups can be accurately attached to both side surfaces of the water pipe through suction cups, and the suction cups can be attached at any position in the length direction of the water pipe, and in any number, Even if you want to strengthen the attachment strength to the water tank or change the suction part of the suction cup, you can handle it without difficulty, and you can always reliably attach the water conduit to the corner of the water tank.

Also, in particular, a pair of flat plate-shaped shielding wall portions are integrally cantilevered from the outer surface of the hollow cylindrical water guiding portion of the water conduit on both sides in a substantially tangential direction, and each free edge of each shielding wall portion is attached to the suction cup. Since the suction force is used to make close contact with each side of the water tank corner, even if there is distortion due to molding error such as the shielding wall, molding error on the side of the water tank corner, or distortion due to water pressure, cantilever Each of the shielding wall parts in the flat plate-shaped synthetic resin body that is relatively elastically deformable can have its free edges evenly adhered to the side surface of the water tank corner part in the entire vertical direction. Not only is there no concern that ornamental fish will get caught between the aquarium and the aquarium, but the mounting part to the aquarium, including the suction cup, is blocked by the blocking wall and cannot be seen from the outside. It is also effective in preventing rattling of the water conduit. In addition, if the above shielding wall is sufficiently elastically deformed at the initial stage of installation, it may occur between the free edge of each shielding wall and the side surface of the water tank corner due to a decrease in suction force due to the subsequent settling of the suction cup. A gap can be effectively avoided.

[Brief description of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is an overall perspective view of a water tank equipped with the water conduit of the present invention, and Fig. 2 is Fig. 1 II.
-II is an enlarged plan view taken along line II, FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2, FIG. 4 is a perspective view of a water conduit, water discharge pipe and joint, and FIG. 6 is a partial sectional view taken along line V, FIG. 6 is a partial sectional view taken along line VI-VI in FIG. 3, FIG.
Figure is bottom view of bottom filter, Figure 8 is Figure 2 VIII-VIII
9 is a sectional view taken along line IX-IX in FIG. 8, FIG. 10 is a sectional view taken along line XX in FIG. 2, and FIG. 11 is an exploded perspective view of the flow dividing portion. Is. C: Corner, T: Water tank, 1 ... Bottom filter, 3 ...
… Water conduit, 6 …… Water guiding part, 7 …… Suction cup mounting part, 8 …… Closing wall part, 8a …… Free edge of the shielding wall part, 14 …… Gap, 10…
… Sucker, 28 …… Suction outlet,

Claims (1)

[Claims] 1. A box-shaped water tank (T) is attached to both side surfaces (11 ₁ , 11 ₂ ) of a corner portion (C) by suction cups (10), and between the water tank (T) and a filter (1). In a synthetic resin water conduit in a filtration device, which is interposed in a water circuit communicating with the hollow cylindrical water conduit (6) extending vertically along the corner (C), and this water conduit ( 6) A pair of suction cup mounting portions (7) integrally extending along the vertical direction on both outer surfaces of the suction cup (10) to which the suction cup (10) can be attached.
And a pair of flat plate-like shields which are cantilevered integrally on both sides in a substantially tangential direction from the outer surface of the water guiding section (6) so as to cover the suction cup mounting section (7) through a gap (14). Wall (8)
And each free edge (8) of the pair of shielding walls (8).
a) is adhered to the corresponding side surfaces (11 ₁ , 11 ₂ ) of the corner portion (C) by the suction force of the suction cup (10), respectively, and a synthetic resin water conduit in a filtering device. .