JP2013099290A - Internal filtration apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an internal filtration apparatus provided in a water tank that can filter unpurified water extensively in an intermediate area and a bottom face area in the water tank.SOLUTION: The internal filtration apparatus is composed of a filter case C, a lid plate L, and a filtering unit U, wherein the filter case C has a filter case body 1 and a bottom face filtration frame 2 integrally provided in a lower part thereof. Water filtered through the bottom face filtration frame 2 and water filtered through the filter case body 1 are sucked into a filter chamber 26 in the filter case body 1, and returned in a water tank V.

Description

  The present invention is an internal filtration device for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish, and in particular, in order to increase the purification efficiency by simultaneously sucking and filtering a wide range of unpurified water in the middle region and bottom region of the aquarium. The present invention relates to an internal filtration device with a simple structure.

  Conventionally, as an internal filtration device for filtering and purifying unpurified water in the aquarium for rearing and growing the ornamental fish in the aquarium, the filtration main body is arranged in the aquarium, mainly in the middle region of the aquarium What filtered unpurified water is well-known (for example, refer patent document 1 mentioned later).

  Further, as the internal filtration device, there is also known a device in which the filtration main body is disposed on the bottom surface in the water tank and the unpurified water in the bottom surface area in the water tank is filtered (for example, see Patent Document 2 described later). ).

Japanese Patent No. 4116888 Japanese Patent No. 3975221

  By the way, when each of the filtration devices shown in Patent Document 1 or 2 is used alone, the purification efficiency of the aquarium water may not be sufficiently obtained. In particular, the type of ornamental fish bred in the aquarium The tendency increases depending on the number, the size of the water tank, and the presence or absence of water plants in the water tank.

  Therefore, in order to increase the purification efficiency, it is conceivable to provide the filtration devices shown in Patent Documents 1 and 2 in the water tank, respectively, but this increases the number of parts of the filtration device and increases the cost. In addition, there are problems such as troublesome maintenance of the filtration device.

  The present invention has been made in view of such a situation, and has a novel structure that allows a wide range of unpurified water to be simultaneously filtered across an intermediate region and a bottom region in a water tank, and has a simple structure and high purification efficiency. An object of the present invention is to provide a filter device.

To achieve the object, the invention according to claim 1 includes a filtration case, a lid plate that detachably closes the upper surface of the opening of the filtration case, and a filtration unit accommodated in the filtration case,
The filtration case has a cylindrical filtration case main body, and a bottom filtration frame integrally provided at a lower portion thereof,
The inside of the filtration case body is partitioned into a non-filtration chamber and a filtration chamber by a filter medium provided in the filtration unit. The non-filtration chamber is in an upper suction opening opened on the outer surface of the filtration body, and the filtration chamber is the lid. Each communicates with the discharge pipe provided on the body,
The bottom filtration frame is characterized in that a bottom filtration chamber is defined therein, a bottom suction port is opened in an outer peripheral surface thereof, and the bottom filtration chamber communicates with the filtration chamber.

  In order to achieve the above object, according to a second aspect of the present invention, in the first aspect of the present invention, the bottom filtration frame is formed in a planar quadrangular shape, and another bottom filtration frame is formed on the outer surface of the bottom filtration frame via a joint. It is characterized in that a single unit is detachably connected.

  To achieve the object, the invention according to claim 3 is the one according to claim 2, wherein one joint half of the joint is integrally formed on a side surface of the bottom filtration frame, and the bottom filtration frame is formed. The other joint half of the joint, which is detachably connected to the joint half on a single side surface, is integrally formed.

  To achieve the above object, the invention according to claim 4 is the one according to claim 1, 2, or 3, wherein the filtration unit is detachably supported on the inner surface of the lid plate. It is said.

  In order to achieve the object, the invention described in claim 5 relates to the invention described in claim 1, 2, 3 or 4, wherein the lid plate has locking holes provided on both sides of the filtration body on both sides. The detachable lock piece is integrally suspended so as to be elastically deformable in the engaging / disengaging direction.

  According to the first aspect of the present invention, since the unpurified water in the water tank can be individually filtered and returned to the water tank through the bottom filtration frame and the filtration main body, a wide range covering the bottom area and the intermediate area in the water tank. The unpurified water can be filtered at the same time, and the filtration efficiency can be greatly increased.

  According to the second aspect of the present invention, the bottom filtration frame is formed in a flat rectangular shape, and the bottom filtration frame can be detachably connected to the outer surface of the bottom filtration frame via a joint. By enlarging, the filtration efficiency can be further increased.

  According to the third aspect of the present invention, one joint half of the joint is integrally formed on the outer side surface of the bottom filtration frame, and can be attached to and detached from one joint half on the outer side surface of the bottom filtration frame alone. Since the other joint halves to be connected are integrally formed, the bottom filtration frame and the bottom filtration frame alone can be directly and easily connected.

  According to the invention of claim 4, since the filtration unit is detachably supported on the inner surface of the lid plate, the lid plate can be assembled to the filtration case together with the filtration unit, and removed from the filtration case. In addition, the assembling and disassembling operation of the filtration device, particularly the operation in the water tank, can be easily performed, and maintenance such as replacement of the filter medium can be easily performed.

  According to the fifth aspect of the present invention, on both sides of the lid plate, lock pieces that can be engaged with and disengaged from the engagement holes provided on both side surfaces of the filtration body are integrally suspended so as to be elastically deformable in the engagement and disengagement direction. Since it is lowered, it can be easily performed with one touch in the attachment / detachment operation between the cover plate and the filtration main body, particularly in the water tank.

Side view of the internal filtration device installed in the water tank as indicated by arrow 1 in FIG. Enlarged plan view of the internal filter along the line 2-2 in FIG. An enlarged bottom view of the internal filter along the line 3-3 in FIG. Plan view of the internal filter along the line 4-4 in FIG. Enlarged view of the phantom line encircled portion shown in FIG. Disassembled perspective view of internal filter Sectional drawing showing the process of separating the filtration unit from the filtration body The top view which shows the state which connected the other bottom face filtration frame single-piece | unit with the bottom face filtration frame. Sectional view along line 9-9 in FIG. Schematic showing how the bottom filtration frame and the bottom filtration frame are connected together

  Embodiments of the present invention will be described below.

  As shown in FIG. 1, the internal filtration device of the present invention is used by being installed in a proper place in the water tank V. The filtration case C, the filtration unit U accommodated therein, and the filtration case C And a lid plate L that detachably closes the upper surface of the opening.

  As shown in FIGS. 1 to 6, the filtration case C is made of a hard transparent synthetic resin material, and is an octagonal tubular filtration case body 1 having an open upper surface, and a vertically formed integrally therewith. And the bottom wall 3 of the filtration case body 1 forms the upper wall of the bottom filtration frame 2, and a plurality of communication holes 4 drilled there are The inside of the filtration case body 1 and the inside of the bottom filtration frame 2 are communicated.

  The bottom filtration frame 2 has an open bottom surface, and a plurality of bottom suction ports 5 each having a long hole are opened on the outer peripheral surface thereof. A bottom filtration chamber 6 is defined, and the bottom filtration chamber 6 communicates with the water tank V through the plurality of bottom suction ports 5.

  In the lower part of the filter case main body 1, a pebble storage portion 16 is formed in which a pebble 15 such as a large spider that functions as a weight and a coarse filter medium is stored.

  A cylindrical air supply portion 7 is formed upward at the center of the bottom wall 3 of the filtration case body 1 (upper wall of the bottom filtration frame 2), and the air supply portion 7 includes the bottom wall 3. An inner end of an air supply passage 8 provided in the radial direction on the lower surface is communicated. An outer end of the air supply passage 8 is communicated with an air pump P disposed outside the water tank V through an air pipe 9. An airstone 11 is connected to an air supply opening 10 opened on the upper surface of the air supply unit 7, and this airstone 11 faces a later-described filtration chamber 26 in the filtration case body 1, and the filtration chamber The pressurized air from the air pump P is dissipated in the air 26 through the air stone 11.

  As shown most clearly in FIG. 6, U-shaped recesses 12 forming a pair are formed on the upper portions of the opposite side surfaces of the filtration case body 1, and the recesses 12 are locked downward. A hole 13 is formed. A lock piece 45 of a cover plate L, which will be described later, is inserted and fitted into the recess 12, and an engagement rod 46 at the lower end of the lock piece 45 is detachably locked in the locking hole 13.

  The filtration unit U accommodated in the filtration case body 1 is composed of a filter medium holding frame 20 and a dense filter medium 30 formed by a soft synthetic resin porous plate. The filter medium holding frame 20 is formed in a drum shape by connecting the upper and lower holding plates 21 and 22 with a plurality of holding rods 23, and a plate-like dense filter medium 30 is attached to the filter medium holding frame 20. A plurality of holding rods 23 and a plurality of holding projections 24 provided on the inner surfaces of the upper and lower holding plates 21 and 22 are alternately guided to be bent and held in a wave shape. And this filtration unit U is accommodated in the filtration case main body 1, The lower holding plate 22 is seated on the pebble 15 in the pebble accommodating part 16, and the non-filtration chamber 25 (refer FIG. 4) outside the filter medium 30 However, a filtration chamber 26 (see FIG. 4) is defined inside thereof. A plurality of small holes 27 are formed in the lower holding plate 22 of the filter medium holding frame 20, and the filtration chamber 26 communicates with the pebbles accommodating portion 16 at the lower portion of the filtration case body 1 through these small holes 27.

  As clearly shown in FIG. 6, the cover plate L that closes the upper surface of the opening of the filtration case body 1 is formed in an octagonal disk shape that is slightly larger than the upper surface of the opening of the filtration case body 1. The mouth 41 is opened, and these upper suction ports 41 are communicated with the non-filtration chamber 25 in the filtration case body 1. In addition, a discharge pipe 42 is erected upward at the center of the cover plate L, and a discharge port 43 of the discharge pipe 42 communicates the filtration chamber 26 in the filter case body 1 with the water tank V. To do.

  On the outer peripheral portion of the lower surface of the cover plate L, a fitting portion 44 that is fitted to the inner peripheral surface of the upper surface of the opening of the filtration case body 1 is formed, and a pair is formed on both sides in the radial direction of the cover plate L. The lock pieces 45 are integrally suspended downward, and an engagement rod 46 is integrally formed on the lower edge of these lock pieces 45. The lock piece 45 can be elastically deformed (see FIG. 7) in the radial direction of the cover plate L so that it can advance and retreat with respect to the engagement hole 13 of the filtration case body 1. The filter case body 1 can be connected with one touch.

  As shown in FIGS. 4 and 5, at least a pair of hook-shaped locking pieces 47 are integrally suspended on the lower surface of the lid L inside the upper suction port 41, and these locking pieces 47 can be elastically engaged with the outer edge of the upper holding plate 21 of the filtration unit U to suspend the filtration unit U from the lower surface of the lid plate L, and the filtration unit U is suspended and connected to the lid plate L. As such, they can be assembled to or removed from the filter case body 1 (see FIG. 7).

  As shown most clearly in FIG. 3, among the four side surfaces of the square bottom filtration frame 2 of the filtration case main body 1, The plate-shaped male connecting piece Jm is integrally formed so as not to protrude outward, and a concave female connection is provided at the center in the width direction of the other two side surfaces adjacent to each other with the other corners interposed therebetween. The piece Jf protrudes outward and is integrally formed.

  As shown in FIGS. 8 and 9, a separate bottom filtration frame 2 a separate from the four outer surfaces of the bottom filtration frame 2 of the filtration case C can be selectively detachably connected.

  The bottom filtration frame unit 2a is the same size as the bottom filtration frame 2 and is formed flat and the same, and bottom suction ports 4a and 5a are opened on the top surface and four side surfaces. As with the bottom filtration frame 2, the bottom filtration frame unit 2 a has a plate-like male coupling piece Jm at the center in the width direction of one of the four side surfaces adjacent to each other across the corner portion. It is integrally formed so as not to protrude outward, and a concave female connecting piece Jm is integrally formed outwardly at the center in the width direction of the other two side surfaces adjacent to each other with the other corners interposed therebetween. Protrusively formed.

  The bottom filtration frame 2, the bottom filtration frame 2a, and the two bottom filtration frames 2a of the filtration case C are selectively detachably intimately coupled via the male coupling piece Jm and the female coupling piece Jf. In the connected state, the bottom filtration chamber 6 of the bottom filtration frame 2 and the bottom filtration chamber 6a of the bottom filtration frame unit 2a are communicated with each other through the bottom suction ports 5 and 5a, and are connected to each other. The bottom filtration chambers 6a of the single bottom filtration frame 2a communicate with each other through the bottom suction port 5a.

  The male connecting piece Jm and the female connecting piece Jf can be fitted and connected to each other in the vertical direction, and the male connecting piece Jm and the female connecting piece Jf constitute a joint J.

  8 and 9 show an example in which the bottom filtration frame unit 2a is connected to two adjacent side surfaces of the bottom filtration frame 2 of the filtration case C, and the two bottom filtration frame units 2a are connected to each other. . In this example, the bottom filtration frame 2 of the filtration case C and the three bottom filtration frames alone 2a constitute a plane square bottom filtration frame group.

  In addition, by connecting the bottom filtration frame 2 of the filtration case C and the plurality of bottom filtration frames alone 2a in an appropriate combination, a cross shape, L, as shown in FIGS. A bottom filtration frame group, such as a shape or a rectangle, can be formed.

  Next, the operation of this internal filter will be described.

<When the bottom filtration frame unit 2a is not connected (see FIGS. 1 to 7)>
As shown in FIGS. 1 to 5, an internal filtration device configured by housing a filtration unit U in a filtration case C and closing an upper opening surface of the filtration case C with a cover plate L is installed in a water tank V. Used.

  The bottom filtration frame 2 is covered with a pebble S (functioning as a coarse filter medium) such as a large tub installed in the water tank V. An air pump P provided outside the water tank V is connected to the air pipe 9.

  When the air pump P is driven, pressurized air from the air pump 9 passes through the air pipe 9 and the air supply passage 8, and is ejected from the air supply port 10 through the air stone 31 into the filtration chamber 26 of the filtration unit U in the form of bubbles. The ejected air becomes an air flow and rises in the filtration chamber 26, and accordingly, the water in the filtration chamber 26 is sucked up and discharged together with the air flow from the discharge pipe 42 through the discharge port 43 into the water tank V. As a result, the water absorption force acts on the filtration chamber 26 and also acts on the bottom filtration chamber 6. As a result, the unpurified water in the water tank V passes through the pebbles S functioning as a coarse filter medium as shown by arrows a and b in FIG. The flow (first flow) is filtered by the pebbles S as a coarse filter medium, and as shown by arrows c and d in FIG. 4, the upper suction port 41 → the unfiltered chamber 25 → the filter medium 30 → the filter chamber 26. The stream (second stream) is filtered. Then, the two filtered water flows (first and second flows) merge in the filtration chamber 26 as shown by an arrow e in FIG. 2 and are returned to the water tank V from the discharge port 43 of the discharge pipe 42. .

  As described above, by driving the single air pump P, the water in the bottom area in the water tank V is filtered by the pebbles S as a coarse filter medium, and the water in the intermediate area in the water tank V is filtered by the dense filter medium 30. The unpurified water in the water tank V can be filtered over a wide range, and the purification efficiency is greatly enhanced.

  Further, the bottom filtration chamber 6 and the filtration chamber 26 are directly connected to each other through the plurality of communication holes 4 formed in the bottom wall 3 so that the water absorption force generated in the filtration chamber 26 acts directly on the bottom filtration chamber 6. Therefore, the common air pump P can efficiently filter the water in the bottom region and the water in the intermediate region in the water tank at the same time.

  When the filtration unit U is separated from the filtration case C for maintenance of the filtration device, the pair of lock pieces 45 are pushed inward as shown by an arrow x as shown in FIG. For example, the engagement rod 46 can be detached from the locking hole 13 of the filtration case body 1, and both the lid plate L and the filtration unit U are separated from the filtration case C with one touch as shown in FIG. be able to.

  Further, when the filter unit U is connected to the cover plate L and accommodated in the filter case C and the inward pressing force of the pair of lock pieces 45 is released, the engagement rod 46 of the pair of lock pieces 45 becomes The filter device can be assembled by automatically engaging with the engaging hole 13 of the filter case C by the elastic force.

<When bottom filtration frame unit 2a is connected (see FIGS. 8 and 9)>
If the bottom filtration frame unit 2a is selectively connected to the bottom filtration frame 2 of the filtration case C as described above, a bottom filtration frame group is formed by them, and the pebbles S functioning as a coarse filter medium thereon. By laying down, the bottom filtration area can be expanded and the bottom filtration capacity can be increased.

  Further, as shown in FIG. 10, by changing the connection position of the bottom filtration frame unit 2a with respect to the bottom filtration frame 2 and the connection position of the bottom filtration frame units 2a, the bottom filtration is performed depending on the size of the water tank V, the filtration position, and the like. The width and shape of the surface can be changed.

  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 embodiment, a water absorption force is generated in the filtration chamber by the air pump, but a submersible pump may be used instead of the air pump.

1 ... Filtration case body 2 ... Bottom filtration frame 2a ... Bottom filtration frame alone 5 ... Bottom suction port 6 ········ Bottom filtration chamber 13 ·········· Locking hole 25 ···················································· Filter medium 41 ... Upper suction port 42 ... Drain pipe 45 ... Lock piece C ... Filtration case L ...・ ・ Cover plate U ・ ・ ・ ・ ・ ・ ・ ・ Filtration unit J ・ ・ ・ ・ ・ ・ ・ ・ Joint Jm ・ ・ ・ ・ ・ ・ One joint half (male connecting piece)
Jf .... The other half of the joint (female connecting piece)

Claims (5)

A filtration case (C), a lid plate (L) for detachably closing the upper surface of the opening of the filtration case (C), and a filtration unit (U) accommodated in the filtration case (C),
The filtration case (C) has a cylindrical filtration case body (1) and a bottom filtration frame (2) provided integrally therewith,
The inside of the filtration case body (1) is partitioned into a non-filtration chamber (25) and a filtration chamber (26) by a filter medium (30) provided in the filtration unit (U), and the non-filtration chamber (25) The upper suction port (41) opened on the outer surface of the filtration body (1), the filtration chamber (26) is communicated with a discharge pipe (42) provided in the lid (L), respectively.
The bottom filtration frame (2) has a bottom filtration chamber (6) defined therein and a bottom suction port (5) opened on the outer peripheral surface thereof, and the bottom filtration chamber (6) is formed of the filtration chamber (6). 26), the internal type filtration device.   The bottom filtration frame (2) is formed in a plane quadrangular shape, and another bottom filtration frame unit (2a) is detachably connected to an outer surface of the bottom filtration frame (2) via a joint (J). The internal filtration apparatus according to claim 1.   One joint half (Jm) of the joint (J) is integrally formed on the side surface of the bottom filtration frame (2), and the joint half (Jm) is formed on the side surface of the bottom filtration frame unit (2a). The internal filtration device according to claim 2, wherein the other joint half (Jf) of the joint (J) is detachably connected to the joint.   The internal filtration device according to claim 1, 2, or 3, wherein the filtration unit (U) is detachably supported on the inner surface of the lid plate (L).   On both sides of the lid plate (L), lock pieces (45) that can be engaged and disengaged with locking holes (13) provided on both side surfaces of the filtration body (1) can be elastically deformed in the engagement and disengagement direction. The internal filtration device according to claim 1, 2, 3, or 4, wherein the internal filtration device is integrally suspended.

Images