JP3975221B2 - Bottom filtration device - Google Patents

Description

  The present invention relates to a bottom filtration device that is laid on the bottom surface of a breeding aquarium for goldfish, tropical fish, saltwater fish, etc., and circulates and filters the water in the aquarium.

Conventionally, a bottom filter has been installed on the bottom surface of the aquarium, and gravel such as ridges has been laid on the bottom surface of the aquarium so as to cover the bottom filter. 2. Description of the Related Art A bottom filtration device is known in which gravel (acts as a filter medium) and a bottom filter is sucked and filtered and then returned to the water tank (see, for example, Patent Documents 1 and 2).
JP-A-63-151321 JP 60-261518 A

  By the way, what is disclosed in Patent Document 1 is connected to a water absorption case 5 of a bottom filter, and a suction pipe 16 connected to the water absorption means 10 via a flexible pipe 73 is connected. Although the position of the water absorbing case 5 can be adjusted, the flexible tube 73 is easily perforated and has a problem in durability. Since the rising pipe 15 is fitted in the integral support cylinder 20, there is a problem that the position of the rising pipe 15 with respect to the casing 5 cannot be adjusted.

  This invention is made | formed in view of this situation, and it aims at providing the novel bottom face filtration apparatus which solved the said conventional problem.

In order to achieve the above object, the invention of claim 1 is characterized in that a filtration unit is installed on the bottom surface in the water tank, a water absorption chamber is formed by the filtration unit and the bottom surface, and the water in the water tank is filtered by the water absorption means. In the bottom filtration device, which is sucked into the water absorption chamber through the upper filter medium and filtered and then returned to the water tank, the filtration unit is provided with a water absorption portion that communicates the water absorption chamber with the water absorption means. A holder that is rotatably supported by a support hole provided in a corner portion of the filtration unit, and a guide tube that is slidably fitted to the holder and that has a water intake port that communicates with the water absorption chamber at the inner end. DOO rotatable relative filtration unit have, and has a slidable water joint, a water suction pipe which is erected from the outer end of the guide tube, connecting a water conduit communicating with said water absorbing means Shi The water conduit, is characterized in that as the moving One slidable adjusted times relative filtration unit.

Furthermore, in order to achieve the object, the invention according to claim 2 is characterized in that, in the invention according to claim 1 , the water absorption means is an air pump, and an air pipe connected thereto is inserted into the water conduit. It is said.

  According to the invention of each of the above items, since the water absorption joint connecting the water conduit is slidable and rotatable with respect to the filtration unit, a conventional flexible bellows tube (which is easily perforated) is not used. The position of the water conduit relative to the filtration unit can be easily adjusted.

  Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.

  FIGS. 1-12 shows one Example of this invention, FIG. 1 is the whole top view of the water tank provided with this invention bottom face filtration apparatus, FIG. 2 is the cross section which follows the 2-2 line of FIG. 3 is a plan view of the bottom filtration device, FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, FIG. 5 is a sectional view taken along line 5-5 in FIG. 3, and FIG. 3 is an enlarged sectional view taken along line 6-6, FIG. 7 is a sectional view taken along line 7-7 in FIG. 3, FIG. 8 is an exploded plan view of the bottom filtering device, and FIG. FIG. 10 is a partial perspective view of the rear surface of the bottom filtration device, FIG. 11 is a partial plan view when the joint of the base filtration unit is slid outward, and FIG. 12 is a diagram of the base filtration unit. It is a partial top view at the time of rotating a joint.

  1 and 2, gravel S such as a large coral is laid in the water tank V, and the base and the connecting filtration units UB and UJ constituting the main part of the bottom filtration device according to the present invention are in the gravel S. Embedded in the water tank V. With the base and the connection filtration units UB and UJ installed at the bottom of the water tank V in this way, the water in the water tank V is activated by the air pump P of the water absorption means connected to the gravel that functions as a filter medium. After being filtered through S, it is sucked into the base and the connecting filtration units UB and UJ, sucked up with air, and returned to the water tank V.

  As shown in FIGS. 3 to 8, the bottom filtration device includes a base filtration unit UB having a water absorption part 3 and a connection filtration unit UJ detachably connected thereto, and these filtration units UB, UJ is made of a hard synthetic resin material, they are flat and square in the top and bottom, are formed in the same size, and the base filtration unit UB is provided with the water absorption part 3, whereas the connection filtration unit UJ does not have it, but other configurations are substantially the same.

  First, the structure of the base filtration unit UB will be described. The base filtration unit UB is a plane quadrangle and is formed to be flat in the vertical direction, and includes an upper wall 1 and side walls 2 surrounding the four sides of the upper wall 1. And its lower surface is open. A flat fan-shaped water-absorbing part 3 is formed at one corner of the base filtration unit UB, and two water-absorbing passages 4 and 5 communicating with the water-absorbing part 3 are provided along two sides sandwiching the water-absorbing part 3. A water absorption chamber 6 (installed on the bottom surface of the water tank V) is formed on the lower surface of the upper wall 1 except for the water absorption portion 3 and the two water absorption passages 4 and 5. As shown in FIGS. 3, 8, and 9, the water absorption chamber 6 below the upper wall 1 and the two water absorption passages 4, 5 are provided with a plurality of openings formed at intervals in the partition wall 7 that partitions them. It communicates through water holes 8. Therefore, the water in the water absorption chamber 6 flows between the two water absorption passages 4 and 5 through the water passage holes 8 and further flows from there to the water absorption portion 3 (arrow in FIG. 9). The outer ends of the water absorption passages 4 and 5 are opened so that, as will be described later, when the connection filtration unit UJ is connected to the base filtration unit UB, the water absorption passages 104 and 105 of the connection filtration unit UJ can communicate with each other. It has become. And the opening outer end of the water absorption passages 4 and 5 which are not connected to the water absorption passages 104 and 105 of the connection filtration unit UJ is closed by the plug body 40.

  As will be described later, the water-absorbing portion 3 can be slidably adjusted in the radial direction (see FIG. 11) and can be rotated around a support hole 18 (see FIG. 7) provided in a corner portion of the base filtration unit UB (see FIG. 7). 12) is provided.

  Further, on the upper surface of the upper wall 1 of the base filtration unit UB, a plurality of rectangular uneven surfaces 10 are continuously formed in a lattice shape vertically and horizontally, leaving the water absorbing portion 3. As shown in FIG. 7, each concave-convex surface 10 has a central peak 10a, an edge valley 10c, and an inclined surface 10b inclined downward from the peak 10a to the valley 10c. , It coincides with the boundary line 11 of another adjacent uneven surface 10. Further, the inclined surface 10b is formed in a sharp concavo-convex shape having a plurality of plane Y-shaped ridge lines and a plurality of linear valleys therebetween. And the upper wall 1 of the base filtration unit UB, which is formed by continuing the sharp uneven surfaces 10 formed in such a shape in a lattice shape, allows water to easily flow from the peak 10a toward the valley 10c. Yes. A plurality of small square holes 12 are opened in the peak 10a and a plurality of small holes 12c in the valley 10c. Water flowing along the upper wall 1 flows into the water absorption chamber 6 through the small holes 12 ... It is supposed to be. The size of the small holes 12 is smaller than the grain of gravel (for example, large coral) S so that the gravel S does not fall into the water absorption chamber 6 from the small holes 12. The stored air in the water absorption chamber 6 is vented through the small holes 12.

  As shown in FIGS. 4 to 7, the two water absorption passages 4, 5 are concave in cross section, and are formed along the side walls 2, 2 sandwiching the corner water absorption portion 3, and the partition walls 7, 7, These water absorption passages 4 and 5 communicate with each other at the water absorption portion 3. As shown in FIGS. 3 and 9, the partition walls 7 and 7 are connected by a circular arc wall 9 at the water absorbing portion 3.

  As shown in FIGS. 3, 7, and 8, the opening upper surfaces of the water absorbing portion 3 and the two water absorbing passages 4 and 5 are L-shaped lid bodies 13 that constitute a part of the upper wall 1 of the base filtration unit UB. Closed by The lid 13 includes a fan-shaped portion 13a that closes the water-absorbing portion 3 and strip-shaped portions 13b and 13b that extend substantially at right angles from both sides and close the two water-absorbing passages 4 and 5. A pair of engagement holes 15 and 15 are formed on the left and right sides of the fan-shaped portion 13a, and the engagement holes 15 and 15 are engaged with the locking claws 16 and the protrusions projecting on the water absorption part 3 of the base filtration unit UB. 16 is detachably engaged, and the upper surfaces of the water absorbing portion 3 and the two water absorbing passages 4 and 5 are closed so as to be openable and closable. Then, on the upper surfaces of the two strip-shaped portions 13b and 13b that close the upper surfaces of the openings of the two water absorption passages 4 and 5, a plurality of uneven surfaces that are the same as the plurality of uneven surfaces 10 formed on the upper surface of the base filtration unit UB are formed. ing. Further, the outer ends of the water absorption passages 4 and 5 (outer ends on the side where the connection filtration unit UJ is not connected) are closed by the plug body 40.

As shown in FIGS. 3 and 7 to 9, a circular support hole 18 is opened in the bottom wall of the water absorbing portion 3 formed at one corner portion of the base filtration unit UB. A holder 19 is rotatably supported. A concave guide groove 19a is formed in the holder 19, and a guide protrusion 19b is projected from the center of the bottom surface. On the other hand, the water-absorbing joint J is formed in an L shape from a flat rectangular tube-shaped guide tube 20 having an inner end opening a water-absorbing port 21 and a water-absorbing tube 22 rising from the outer end of the guide tube 20. The guide tube 20 is slidably fitted in the guide groove 19a of the holder 19, and a long groove 20a formed on the bottom surface of the guide tube 20 is slidably engaged with the guide protrusion 19b. Accordingly, as shown by the arrow in FIG. 11, the water absorption joint J can be adjusted to slide in the radial direction with respect to the base filtration unit UB by sliding the long groove 20a along the guide protrusion 19b. As shown by the arrows, the water-absorbing joint J rotates around the support hole 18 together with the holder 19 and can be adjusted to rotate left and right with respect to the base filtration unit UB.

  As shown in FIGS. 3, 8, and 9, two outer sides of the base filtration unit UB that face the water absorption part 3, that is, two outer sides that do not have the water absorption passages 4 and 5, are connected filter filtration unit UJ described later. Female and male connection pieces 25 and 26 detachably connected to the male and female connection pieces 126 and 125 are provided at intervals.

  As shown in FIGS. 1, 2, and 7, an extendable water guide pipe 30 is connected to the water absorption pipe 22 of the water absorption joint J. The water guide pipe 30 extends vertically in the water tank V, and an outlet at the upper end thereof opens to the upper part of the water tank V. Further, an air pipe 31 connected to an air pump P as a water absorption means is inserted into the water conduit 30, and an air stone 32 is connected to the lower end of the air pipe 31. Thus, as described above, the water absorption joint J can be slid and rotated with respect to the base filtration unit UB, so that the installation position of the water guide pipe 30 can be adjusted in the water tank V. The water conduit 30 is fixed to the wall surface of the water tank V by a suction cup 33 as usual.

  As shown in FIG. 8, the connection filtration unit UJ detachably connected to the base filtration unit UB is formed in the same size and shape with the same material as the base filtration unit UB. On the lower surface, the same water absorption chamber 106 as the base filtration unit UB (cooperating with the bottom surface of the water tank V) is formed, and the cross section is concaved by the side wall 102 and the partition wall 107 across two adjacent sides. The plane L-shaped water absorption passages 104 and 105 are formed, and both outer ends of these water absorption passages 104 and 105 are opened. The water absorption chamber 106 and the water absorption passages 104 and 105 communicate with each other through a plurality of water passage holes 108 formed in the partition wall 107. Opening upper surfaces of the water absorption passages 104 and 105 are closed by an L-shaped lid body 113 so that they can be opened and closed, and their outer ends are closed by a plug body 40 as necessary. Further, an uneven surface 10 having the same shape as the upper surface of the base filtration unit UB and having the same small holes 12 is formed on the upper wall 101 and the upper surface of the lid 113 of the connection filtration unit UJ. Further, the other two sides of the connection filtration unit UJ that do not have the water absorption passages 104 and 105 are connected to other male and female connections that can be detachably connected to the female and male connection pieces 25 and 26 of the base filtration unit UB. Pieces 125 and 126 are formed.

  Next, the operation of this embodiment will be described.

  This embodiment is a case where one connection filtration unit UB is connected to the base filtration unit UB. As shown in FIGS. 1 to 3, the female and male coupling pieces 25 and 26 on one side of the base filtration unit UB, When the male and female coupling pieces 126, 125 on one side of the connection filtration unit UJ are coupled, they are integrally coupled on one plane, and their water absorption passages 4, 5 and 104, 105 communicate with each other. The upper surfaces of the water absorption passages 4, 5 and 104, 105 are closed by the lid bodies 13, 113, respectively. At this time, the opening outer ends of these water absorption passages 4, 5; 104, 105 are closed by the plug 40.

  A combined body of the base and the connection filtration units UB and UJ is installed on the bottom surface of the water tank V as shown in FIGS. Thereby, the water absorption chambers 6 and 106 are formed on the bottom surface of the water tank V by the base and the connection filtration units UB and UJ. Then, gravel S is laid on the bottom surface of the water tank V so as to cover the base and the connection filtration units UB and UJ. Further, a water conduit 30 is connected to the water-absorbing joint J, and an air pipe 31 connected to an air stone 32 inserted into the water conduit 30 is connected to the air pump P.

  According to the operation of the air pump P, a suction force is generated in the water absorption chambers 6 and 106 due to the rising airflow generated in the water conduit 30, and the unpurified water in the water tank V is filtered through the gravel S, After purification, the purified water flows into the water absorption chambers 6 and 106 of the base and connection filtration units UB and UJ, and from there to the water absorption passages 45, 104, and 105 through the water flow holes 8 and 108. It flows through the water absorption joint J and rises in the water guide pipe 30 and is returned to the water tank V from the outlet at the upper end.

By the way, in the filtering action,
(1) The water that has flowed into the water absorption chambers 6, 106 flows into the water absorption passages 4, 5, 104, 105 through the plurality of water passage holes 8, 108, whereby the water absorption passages 4, 5, 104, The flow velocity of the water flowing through 105 is increased, so that the dust accumulated there can be easily flowed together with the water, and the dust can be made difficult to stay in the water absorption chambers 6, 106 and the water absorption passages 4, 5, 104, 106.

  (2) The upper and lower walls 1, 101 of the base and connection filtration units UB, UJ are formed with a plurality of uneven surfaces 10 ..., and the uneven surfaces 10 ... are, as described above, the ridges 10a, the uneven inclined surfaces. 10b and valley 10c are formed in a sharp concavo-convex shape, and the small holes 12 respectively opened in the peaks 10a and valleys 10c are smaller than the size of the gravel S, so that the upper wall 1, The water on 101 flows smoothly from the inclination of the upper wall 1, 101 along the upper wall 1, 101, through the small holes 12 to the water absorption chambers 6, 106, and does not stay. Water circulation is smooth with little resistance.

(3) The air in the water absorption chambers 6 and 106 does not stay in the chambers 6 and 106 but is discharged to the outside through the small holes 12 to reduce the generation of CO ₂ due to the staying of air as much as possible. As well as ensuring a smooth flow of water, it is possible to prevent a decrease in filtration function due to water retention.

  (4) Since the water absorption joint J for connecting the water conduit 30 is slidable and rotatable with respect to the base filtration unit UB, the conventional flexible bellows tube (which is easily perforated) can be used. The position adjustment of the water pipe 30 can be easily performed.

  As mentioned above, although the Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

  For example, in the above-described embodiment, the case where one connection filtration unit is connected to the base filtration unit has been described. Of course, other base connection filtration units can be connected to the base and the connection filtration unit. Moreover, in the said Example, although the air pump is used as a water absorption means, it replaces with this and you may use other pumps, such as a submersible pump.

Overall plan view of an aquarium equipped with a bottom filtration device Sectional view along line 2-2 in FIG. Top view of bottom filtration device Sectional view along line 4-4 in FIG. Sectional drawing which follows the 5-5 line of FIG. 3 is an enlarged cross-sectional view taken along line 6-6 in FIG. Sectional view along line 7-7 in FIG. Exploded plan view of bottom filtration device Diagram showing the flow of water in the bottom filtration device Partial perspective view of the back of the bottom filtration device Partial plan view when the base filtration unit is slid outward Partial plan view when the joint of the base filtration unit is rotated

Explanation of symbols

3 .... Water absorption part 6 ... Water absorption chamber 18 ... Support hole 19 ... ·········· Holder 20 ················································································・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Water guide pipe 31 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ End pipe J ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Water absorption joint P ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・... Water absorption means (air pump)
S ... gravel UB ... filtration unit (base filtration unit)
V: Water tank

Claims (2)

A filtration unit (UB) is installed on the bottom surface in the water tank (V), a water absorption chamber (6) is formed by the filtration unit (UB) and the bottom surface, and water in the water tank (V) is formed by the water absorption means (P). In the bottom filtration device, the solution is sucked into the water absorption chamber (6) through the filter medium on the filtration unit (UB) and filtered and then returned to the water tank (V).
The filtration unit (UB) is provided with a water absorption part (3) communicating the water absorption chamber (6) with the water absorption means (P), and the water absorption part (3) is provided at a corner of the filtration unit (UB). A holder (19) rotatably supported by the support hole (18), and a water inlet (21) which is slidably fitted to the holder (19) and communicates with the water absorbing chamber (6) at the inner end. ) is provided with a rotatable relative to the guide tube is opened (20) filtration have a unit (UB), and slidable water joint (J), out of the guide tube (20) A water pipe (30) communicating with the water absorbing means (P) is connected to the water pipe (22) raised from the end , and the water pipe (30) is rotated and slid with respect to the filtration unit (UB). A bottom filtration device characterized by being adjustable. Before Symbol water means (P) is an air pump, an air pipe which is connected thereto (31), characterized in that it is inserted into the water conduit (30), a bottom filtering apparatus according to claim 1 .

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