JP6454127B2 - Internal filtration device - Google Patents

Description

  The present invention is an internal filtration device provided in an aquarium for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish. In particular, it can be compactly attached to the side surface of the aquarium and can achieve a significant cost reduction. The present invention relates to an internal filtration device.

  Conventionally, in order to breed and cultivate the ornamental fish in an aquarium, an internal filtration device in which a filtration main body is attached to a side surface in the aquarium to circulate and filter the water in the aquarium is known (for example, See Patent Document 1 below).

Japanese Patent Publication No. 6-101975

  By the way, the internal filtration device shown in Patent Document 1 is configured such that a suction pipe that houses an air pipe to which an airstone is attached is constituted by a pipe material that is separate from the filter material holding part, and is filtered through the filter material. Water is discharged into the water tank through the suction pipe.

  By the way, since the suction pipe is made of a pipe material, it is formed by extrusion molding of a material such as a synthetic resin material. Generally, the extrusion molding of the material has a higher manufacturing cost than the injection molding. There's a problem.

  The present invention has been made in view of such circumstances, so that a suction pipe that sucks up water after filtration can be formed by injection molding, thereby reducing the manufacturing cost of the suction pipe and greatly reducing the overall filtration apparatus. An object of the present invention is to provide a novel internal filtration device that can achieve a significant cost reduction.

In order to achieve the above object, the invention described in claim 1 includes a filtration case fixed to a side surface in a water tank, a filter medium accommodated in the filtration case, a suction pipe provided in the filtration case, The pump is a pump that exerts a water absorption force in the suction pipe. In the type filtration device,
The suction pipe is formed by integrally joining a first suction pipe half and a second suction pipe half formed in a semicircular cross section, and each suction pipe half is , Each formed by injection molding,
The filtration case is configured by detachably connecting a first filtration case and a second filtration case,
One of the first and second suction pipe halves is injection-molded integrally with one of the first and second filtration cases .

In order to achieve the object, the invention described in claim 2 is the one described in claim 1 , wherein the back surface of the first filtration case is adsorbed on a side surface in the water tank through a suction cup, A seal band that closes a gap between the back surface and the side surface in the water tank is formed around the back surface .

For the purposes achieved, an invention according to claim 3, Oite to those described in the claim 1 or 2, wherein the suction tube has its upper half portion, a diameter smaller than its lower half portion It is characterized by being.

  According to the first aspect of the present invention, the suction pipe that sucks up water is configured by integrally joining a pair of suction pipe halves formed in a semicircular cross section, and each suction pipe half is Since each is formed by injection molding, the manufacturing cost of the suction pipe can be greatly reduced, and the shape flexibility of the suction pipe can be increased.

The filtration case is configured by detachably connecting the first filtration case and the second filtration case, and one of the pair of suction pipes is one of the first and second filtration cases. Since it is injection-molded integrally with one, the filtration case and the suction pipe are integrated, and they can be easily formed in a compact manner.

According to the invention of claim 2 , the back surface of the first filtration case is adsorbed on the side surface in the water tank via the suction cup, and the periphery of the back surface is between the back surface and the side surface in the water tank. Since a seal band that closes the gap is formed, small fish and fry do not enter between the side surface of the aquarium and the filtration case.

According to the invention of claim 3, since the upper half of the air pipe inserted into the suction pipe is formed with a smaller diameter than the lower half, the suction speed of the water sucked up into the suction pipe is increased. The speed can be increased.

The perspective view which shows the state which installed the internal type filtration apparatus in the water tank Enlarged front view of the internal filter along the line 2-2 in FIG. Enlarged cross-sectional view along line 3-3 in FIG. Enlarged cross-sectional view along line 4-4 in FIG. Enlarged sectional view taken along line 5-5 in FIG. Sectional view along line 6-6 in FIG. Sectional view along line 7-7 in FIG. Sectional view along line 8-8 in FIG. Sectional drawing which follows the 9-9 line of FIG. Disassembled perspective view of internal filter Sectional drawing which shows the state which attaches / detaches the filter medium to the filter case Sectional drawing which shows the state which attaches / detaches the filter medium to the filter case The figure which shows the state which attached two sets of filtration cases in the water tank

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the internal filtration device is attached to the inner surface of the water tank V, and is a rectangular flat filtration case C that is long in the vertical direction, and a plate that is detachably accommodated in the filtration case C. Filter medium F.

  First, the structure of the filtration case C will be described with reference to FIGS.

  The filtration case C is composed of a first filtration case 10 and a second filtration case 20 that are coupled to each other so as to be opened and closed. The first filtration case 10 is integrally molded by injection molding of a synthetic resin material, and includes a plate-like back wall portion 11 and left and right side wall portions 12 and 13 that stand forward at substantially right angles from left and right side edges thereof, It is adsorbed and held on the inner surface of the water tank V via a suction cup 50 attached to the back surface of the back wall portion 11. In addition, an endless seal band 14 is integrally formed on the back surface of the back wall portion 11 along the outer peripheral portion thereof. The seal band 14 is in close contact with the inner surface of the water tank V, and the inner surface and the first surface. Small fish and fry are prevented from entering between the filter case 10.

  A flow channel 15 having a rectangular cross section is formed across the entire width of the lower end of the first filtration case 10, and a cap 51 having an inlet 52 is connected to the upstream end of the flow channel 15. The lower end of a suction pipe P, which will be described later, is connected to the downstream end thereof (see FIG. 2). A communication port 16 communicating with the downstream filtration chamber B in the filtration case C is opened on the upper surface of the flow channel 15, and the filtered water flows into the flow channel 15 through the communication port 16. (See FIGS. 2, 5, and 7). On both sides of the lower portion of the first filtration case 10, hinge pins 18 that are rotatably fitted in the hinge holes 24 of the second filtration case 20 are projected. A plurality of vertical ribs 19 are integrally formed with an interval on the inner surface of the first filtration case 10, and these vertical ribs 19 form a space between the inner surface of the first filtration case 10 and the filter medium F. In addition, a downstream-side filtration chamber B through which water after filtration is circulated is formed.

  As shown in FIGS. 4 and 10, the left side wall portion 12 of the first filtration case 10 to be injection-molded has a first suction that has a semicircular cross section that constitutes a half of a suction pipe P described later. The tube half 17 is injection-molded integrally.

  On the other hand, the second filtration case 20 is integrally formed by injection molding of a synthetic resin material in the same manner as the first filtration case 10, and is substantially perpendicular to the rectangular plate-like front wall 21 and its left and right side edges. The left and right side wall portions 22 and 23 standing rearward are provided, and are connected to the front surface of the first filtration case 10 so as to be opened and closed. A plurality of water inlets 25 made of slits are irregularly opened at intervals in the front wall portion 21 of the second filtration case 20.

  Hinge holes 24 are respectively opened at the lower ends of the left and right side wall portions 22 and 23 of the second filtration case 20, and these hinge holes 24 are provided at the lower ends of the left and right side wall portions 12 and 13 of the first filtration case 10, respectively. The second filtration case 20, which is rotatably engaged with the hinge pin 18 (see FIG. 5) and supported on the water flow path 15 of the first filtration case 10, is connected to the first filtration case 10. Thus, it can be opened and closed around the hinge pin 18 (see FIG. 11). At the upper ends of the first filtration case 10 and the second filtration case 20, there are formed a convex portion 10 a and a concave portion 20 a that can be engaged with each other. The second filtration case 20 is locked in the closed position (see FIG. 6).

  As shown in FIGS. 4 and 10, a suction pipe P for returning filtered water into the water tank V is provided on one side of the filtration case C. This suction pipe P has a first suction pipe half body 17 (injection-molded integrally with the first filtration case 10 as described above) and a second suction pipe half body having a semicircular cross section. The body 30 is configured with a palm joint. As shown in FIG. 10, the second suction pipe half 30 is injection-molded as a single unit. As shown in FIG. 4, engagement concave portions 17 a formed on both side edges of the first suction pipe half body 17, and engagement convex portions 30 a formed on both side edges of the second suction pipe half body 30. Are engaged with each other, and as shown in FIG. 8, the lower ends of the first suction pipe half 17 and the second suction pipe half 30 are engaged with the engagement protrusions 17b. Holes 30b are formed and are detachably engaged.

  As shown in FIGS. 2, 8, and 10, the lower end of the suction pipe P communicates with the downstream end of the water flow channel 15, and the upper end of the water supply pipe 31 that opens into the water tank V is fitted and connected. Is done. The upper half Pu of the suction pipe P is formed with a smaller diameter than the lower half Pd.

  As shown in FIGS. 2 and 8, an air pipe 34 having an airstone 35 connected to the lower end is inserted into the suction pipe P, and an air pump AP is connected to the outer end of the air pipe 34.

  When the air pump AP is operated, the pressurized air is jetted into the suction pipe P through the air pipe 34 and the air stone 35, and the water in the filtration case C is sucked into the suction pipe P from the water flow path 15, Water in the water tank V is absorbed into the water tank V through a plurality of slit-shaped water intake ports 25.

  Thus, the upper half Pu of the suction pipe P is formed with a smaller diameter than the lower half Pd thereof, so that the water in the suction pipe P is increased and rises in the suction pipe P. .

  As shown in FIGS. 5 and 10, hinge holes 24 are opened at the left and right lower ends of the second filtration case 20, and these hinge holes 24 protrude from the left and right lower ends of the first filtration case 10. The second filter case 20 is rotatably fitted to the hinge pin 18 provided so that the second filter case 20 can be opened and closed with respect to the first filter case 10 (see FIG. 11). Can be taken in and out of the filter case C.

  As shown in FIGS. 2, 4, 7, and 10, the plate-shaped filter medium F is formed in a rectangular shape that is long in the vertical direction, and a thin hard filter medium 40 and a thicker soft filter medium 41 are integrally formed. It is composed of overlapping. An edge frame 42 having a U-shaped cross section is fixed to the upper edge of the filter medium F over its entire width. A handle 43 is integrally provided at the center of the edge frame 42. In the plate-shaped filter medium F, the hard filter medium 40 faces the front side (side facing the second filtration case 20), and the soft filter medium 41 faces the back side (side facing the first filtration case 10). In this manner, the upstream filtration chamber A is inserted between the second filtration case 20 and the filter medium F, and the first filtration case 10 and the filter medium F. A downstream filtration chamber B is formed (see FIG. 4).

  Next, the operation of this embodiment will be described.

  As shown in FIGS. 1 and 2, the filtration device of this embodiment is adsorbed and held on the side surface in the water tank V by a suction cup 50.

  Now, if the air pump AP provided outside the water tank V is driven, the unpurified water in the water tank V is absorbed by the suction force generated in the suction pipe P by the pressurized air ejected from the air stone 35 through the air pipe 34. As shown in FIG. 2, the flow is divided into a first flow (arrow a) and a second flow (arrow b) and sucked into the filtration case. As shown in FIGS. 2, 4, and 7, the first flow (arrow a) flows through the water inlet 25 → the upstream filtration chamber A → the filter medium F → the downstream filtration chamber B and is filtered, and then the communication port 16. While flowing in the flowing water channel 15, the second flow (arrow b) flows without passing through the filter medium F to the inflow port 52 opened in the cap 51 → the inflow channel 15 as shown in FIG. 2. After the first flow (arrow a) and the second flow (arrow b) merge in the inflow path 15, the suction pipe P is sucked up and discharged from the water supply pipe 31 into the water tank V.

  By the way, the water flowing through the filter case C is divided into a first flow (arrow a) and a second flow (arrow b), whereby the flow rate of the water flowing through the filter medium F is adjusted. The filtration efficiency by F can be increased, and the growth of aerobic microorganisms adhering to the filter medium F can be promoted. Further, the suction pipe P is formed such that the upper half Pu is smaller in diameter than the lower half Pd, so that the water flowing in the suction pipe P is increased in speed and the filtration efficiency is increased.

  In addition, the filter medium F is soiled by the adhesion and accumulation of dirt such as dust, fish excrement, and residual bait. Therefore, it is necessary to periodically clean and replace it. In such a case, FIG. As shown, cleaning the filter medium F with the filter case C attached to the water tank V by opening the second filter case outwardly with respect to the first filter case and pulling out or inserting the filter medium F. Exchange work can be performed.

  In addition, as shown in FIG. 12, the filter medium F can be pulled out or inserted without opening the second filtration case 20.

  FIG. 13 shows a second embodiment of the present invention.

  According to the second embodiment, the filtration case C includes two second filter cases in one first filtration case 10 (twice the width of the first filtration case 10 of the first embodiment). The filtration cases 20 are connected in parallel, and two sets of the filtration cases C are attached to the side surface in the water tank V in parallel.

  In this case, the upstream end of the flow channel 15 of one filtration case C (FIG. 13, left side) and the downstream end of the flow channel 15 of the other filtration case C (FIG. 13, right side) are connected in communication with each other. The cap 51 is connected to the upstream end of the other flow channel 15.

  According to the second embodiment, two sets of filtration cases C, C (each filtration case C is composed of one first filtration case 10 and two second filtration cases 20, 20), respectively. The water in the water tank V that has flowed in and filtered is sucked into the suction pipe P and discharged into the water tank V.

  By the way, as shown in the first and second embodiments, the suction pipe P that sucks up the water has the first and second suction pipe halves 17 and 30 formed in a semicircular cross section. Since the suction pipe halves 17 and 30 are each manufactured by injection molding, the suction pipe P is manufactured as compared with the case of manufacturing the suction pipe P by conventional extrusion molding. The cost can be greatly reduced, and the degree of freedom of the shape of the suction pipe P can be increased. For example, the diameter can be changed along the length direction as in the above embodiment. .

  Further, the filtration case C is configured by detachably connecting the first filtration case 10 and the second filtration case 20, and one of the pair of suction pipes P is the first and second filtration cases. Since either one of the cases 10 and 20 is injection-molded integrally, the filtration case C and the suction pipe P are integrated, and they can be easily molded compactly.

  Further, the back surface of the first filtration case 10 is held on the side surface in the water tank V via the suction cup 50, and a seal that closes the gap between the back surface and the side surface of the water tank V is provided around the back surface. Since the band 14 is formed, small fish and fry do not enter between the side surface of the water tank V and the filtration case C.

  Furthermore, since the upper half Pu of the suction pipe P is formed with a smaller diameter than the lower half Pd, it is possible to increase the suction speed of the water sucked into the suction pipe P.

  Although the embodiment has been described above, the present invention is not limited to the embodiment, and various other embodiments are possible within the scope of the present invention.

  For example, in the above-described embodiment, the filtration device includes a filtration case including one first filtration case and one second filtration case, or one first filtration case and two second filtration cases. Two cases of filtration cases are provided depending on the case. For example, the filtration device includes one combination of a filtration case including one first filtration case and two second filtration cases. Also good.

  Moreover, in the said embodiment, although the 1st suction pipe half body is integrally injection-molded in the 1st filtration case, it is also possible to carry out this injection-molding integrally in the 2nd filtration case. Good.

  Further, in the above-described embodiment, the water absorption force is generated in the suction pipe by the air pump, but the water absorption force may be generated in the suction pipe by another pump such as a water pump.

10. First filtration case 17 ... First suction pipe half 14 ... Seal band 20 ... Second Filtration case 30 ········· Second suction pipe half 50 ···············································
C ... Filtration case F ... Filter material P ... Suction pipe Pu ... Upper half Pd ... Lower half V ... Water tank

Claims (3)

A filtration case (C) fixed to the side surface in the water tank (V), a filter medium (F) accommodated in the filtration case (C), and a suction pipe (P) provided in the filtration case (C) And a pump (AP) that exerts a water absorption force in the suction pipe (P). By operating the pump (AP), the water in the water tank (V) is filtered through the filter medium (F). After that, in the internal filtration device that is sucked into the suction pipe (P) and discharged into the water tank (V),
The suction pipe (P) is formed by integrally joining a first suction pipe half (17) and a second suction pipe half (30) formed in a semicircular cross section. Each suction pipe half (17, 30) is formed by injection molding,
The filtration case (C) is configured by detachably connecting the first filtration case (10) and the second filtration case (20),
One of the first and second suction pipe halves (17, 30) is injection-molded integrally with one of the first and second filtration cases (10, 20). An internal filtration device. The back surface of the first filtration case (10) is adsorbed to the side surface in the water tank (V) via the suction cup (50), and the back surface and the side surface in the water tank (V) are disposed around the back surface. The internal filtration device according to claim 1 , wherein a seal band (14) for closing a gap between the filter and the filter is formed. The internal filtration according to claim 1 or 2 , wherein the suction pipe (P) has an upper half (Pu) formed with a smaller diameter than a lower half (Pd). apparatus.

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