JP5745392B2 - Internal filtration device - Google Patents

Description

  The present invention relates to an improvement of an internal filtration device that is installed in an aquarium for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish, and circulates and filters the water in the aquarium.

  Conventionally, an internal filtration device that is installed in a proper place in a water tank for breeding and growing the ornamental fish in a water tank and circulates and filters unpurified water in the water tank is known (for example, , See Patent Document 1 below).

JP 9-38637 A

In the internal filtration device disclosed in Patent Document 1, a case main body C ₁ and a bottom lid C ₂ are detachably connected to form a filtration case C, and a filter medium 26 is attached in the filtration case C. The filter medium holding frame F is accommodated, the unpurified water in the water tank V is sucked into the filter case C, filtered through the filter medium 26, and then returned to the water tank V.

  By the way, such a filtering device, while being used, filth such as fish excrement, residual bait, and dead leaves gradually adheres and accumulates on the filter medium, and the filter medium becomes clogged and the flow resistance of water increases. Since efficiency is reduced, it is necessary to perform maintenance such as cleaning and replacing the filter medium periodically.

However, in the internal filtration device disclosed in Patent Document 1, the lower portion of the case main body C ₁ is lap-fitted to the side surface of the bottom wall C ₂ , and a pair of insertion tongue pieces 4 provided on the lower edge thereof are provided. Since the filtration case C is assembled by being inserted into and engaged with a pair of insertion holes 16 provided on the side surface of the bottom lid C _2, the filter medium 26 accommodated in the filtration case C can be replaced. When performing maintenance, the lap engaging part between the case main body C ₁ and the bottom cover C ₂ is “stuck” due to adhesion of dirt, etc., and the maintenance work of the filter medium 26 by separating them is troublesome, especially in the water tank. There is a problem that the work is difficult.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a novel internal filtration device that can solve such a problem.

In order to achieve the object, the invention described in claim 1 is a container-shaped filtration case having an open upper surface , a lid plate seated on the open upper surface of the filtration case and removably closing the upper surface , And a filtration unit housed in
On both sides of the lid plate, a plurality of lock pieces that can be respectively engaged and disengaged with a plurality of locking holes provided on both side surfaces of the filtration case are integrally suspended so as to be elastically deformable in the engagement and disengagement directions. When the piece is elastically deformed inward in the radial direction of the lid plate, it is detached from the locking hole, and when the piece is elastically restored outward in the radial direction of the lid plate, it engages with the locking hole. Has been
A support portion is provided on the lower surface of the lid plate, and the support portion is automatically engaged with the engaged portion on the upper portion of the filtration unit when the lid plate is seated on the open upper surface of the filtration unit. It is characterized in that the the like.

In order to achieve the above object, the invention described in claim 2 is a container-shaped filtration case having an open upper surface , a lid plate seated on the open upper surface of the filtration case and removably closing the upper surface ; And a filtration unit housed in
On both sides of the lid plate, a plurality of locking pieces that can be engaged and disengaged with a plurality of locking holes provided on both side surfaces of the upper part of the filtration case are integrally suspended, and a portion provided with the locking holes of the filtration case Is elastically deformable in the radial direction of the filtration case, and when the elastically deformed radially inward, the locking hole is detached from the lock piece, and elastically restored radially outwardly, The locking hole is adapted to engage with the locking piece ;
A support portion is provided on the lower surface of the lid plate, and the support portion is automatically engaged with the engaged portion on the upper portion of the filtration unit when the lid plate is seated on the open upper surface of the filtration unit. It is characterized in that the the like.

According to the first aspect of the present invention, a plurality of lock pieces that can be engaged with and disengaged from a plurality of locking holes provided on both side surfaces of the filtration main body can be elastically deformed in the direction of engagement. When it is suspended integrally and the lock piece is elastically deformed radially inward of the lid plate, it is detached from the locking hole, and when the lock piece is elastically restored radially outward of the lid plate, Since it is designed to engage with the hole, the lid plate can be assembled to the filtration case with one touch, and removed from the filtration case, and the assembly and disassembly operation of the filtration device can be easily performed. Maintenance such as replacement of filter media can be easily performed.

Further, since the support portion provided on the lower surface of the lid plate is automatically engaged with the engaged portion on the upper portion of the filtration unit when the lid plate is seated on the upper surface of the filtration unit, the lid plate and the filtration case Connection with the unit is easy.

According to the second aspect of the present invention, a plurality of lock pieces that can be engaged with and disengaged from a plurality of engaging holes provided on both side surfaces of the upper portion of the filtration main body can be elastically deformed in the direction of engagement. The portion provided with the locking hole of the filtration case main body is elastically deformable in the radial direction of the filtration case main body, and when elastically deforming radially inward, the locking hole is When it is detached from the lock piece and elastically deformed outward in the radial direction, the locking hole is adapted to engage with the lock piece. Moreover, it can be removed from the filter case, the filter device can be easily assembled and disassembled, and maintenance such as replacement of the filter medium can be easily performed.

Further, since the support portion provided on the lower surface of the lid plate is automatically engaged with the engaged portion on the upper portion of the filtration unit when the lid plate is seated on the upper surface of the filtration unit, the lid plate and the filtration case Connection with the unit is easy.

Side view of the internal filtration device installed in the water tank (first embodiment) FIG. 1 is an enlarged plan view of an internal filter along line 2-2 in FIG. 1 (first embodiment). FIG. 1 is an enlarged bottom view of the internal filtration device along line 3-3 (first embodiment). FIG. 2 is a longitudinal sectional view of the internal filter along line 4-4 in FIG. 2 (first embodiment). Enlarged view of the phantom line encircled portion shown in FIG. 4 (first embodiment) Disassembled perspective view of internal filter (first embodiment) Sectional drawing which shows the process of isolate | separating the filtration unit from the filtration main body (1st Embodiment) Cross sectional view of lid plate and filtration unit (first embodiment) FIG. 4 is a longitudinal sectional view of an internal filtration device corresponding to FIG. 4 (second embodiment). Enlarged view of a portion surrounded by an imaginary line 10 in FIG. 9 (second embodiment) Disassembled perspective view of internal filter (second embodiment) Sectional drawing which shows the process of isolate | separating the filtration unit from the filtration main body (2nd Embodiment).

  First, a first embodiment of the present invention will be described with reference to FIGS.

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

  As shown in FIGS. 1 to 6, the filtration case C has an octagonal tubular filtration case body 1 that is made of a hard transparent synthetic resin material and has an upper surface opened. A plurality of support legs 2 are provided, and when this filtration case C is installed in the water tank V, a gap through which water passes is formed between the bottom surface of the water tank V. The bottom wall 3 is provided with a plurality of bottom surface suction ports 4 that communicate with the outside of the filter case body 1.

  In the lower part of the filter case main body 1, a pebble storage portion 5 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 unit 7 is formed upward in the center of the bottom wall 3 of the filtration case body 1, and the air supply unit 7 is provided with a radial air supply on the lower surface of the bottom wall 3. The inner end of the passage 8 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 the upper surface of the air supply unit 7. The airstone 11 faces a filtration chamber 26 (described later) in the filtration case body 1, and the air pump P is fed into the filtration chamber 26. The compressed air is dissipated through the airstone 11.

As shown most clearly in FIG. 6, the upper portion of the side surfaces facing the filtration case body 1, together with the recess 12 of the pair, such to U-shape is formed, the lower their recesses 12, the locking A hole 13 is formed. The recess 12 is fitted with a lock piece 45 of a cover plate L, which will be described later, and an engagement rod 46 at the lower end of the lock piece 45 is detachably engaged with the engagement hole 13.

As shown in FIGS. 4 and 6, the filtration unit U accommodated in the filtration case body 1 includes a filter medium holding frame 20 and a dense filter medium 30 formed by a 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. on the plurality of holding rods 23 and held is guided alternately to the plurality of holding projections 24 protruding from the inner surface of the lower holding plates 21 and 22 are bent in a corrugated 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 5, and the non-filtration chamber 25 (refer FIG. 4) is outside the filter medium 30. A filtration chamber 26 (see FIG. 4) is defined inside. 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 5 at the bottom of the filtration case body 1 through these small holes 27.

As clearly shown in FIG. 6, the cover plate L to close the opening top surface of the filter case body 1, rather than opening the upper surface of the filter case body 1 is formed slightly larger octagonal board-like, over its entire surface, a plurality of Upper suction ports 41 are opened, and these upper suction ports 41 communicate with the unfiltered 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 lid plate L, a fitting portion 44 that fits the inner peripheral surface of the upper surface of the opening of the filtration case main body 1 is formed. The pieces 45 are integrally suspended downward, and an engagement rod 46 is integrally formed on the lower edges 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 the lock piece 45 can advance and retreat with respect to the engagement hole 13 of the filtration case body 1. The filter case main body 1 can be connected with one touch.

As shown in FIGS. 4, 5, and 6, at least a pair of hook-shaped support portions 47 are integrally suspended on the lower surface of the lid plate L inside the upper suction port 41. When the lid plate L is seated on the upstream side of the filter medium holding frame 20, the support portion 47 automatically and elastically engages with the outer edge of the upper holding plate 21 serving as the engaged portion of the filtration unit U, The filtration unit U can be suspended from the lower surface of the plate L, and the filtration unit U can be assembled to or removed from the filtration case body 1 with the filtration unit U suspended from the lid plate L. (See FIG. 7).

  Next, the operation of the first embodiment will be described.

  As shown in FIGS. 1 and 4, a filtration unit U is accommodated in the filtration case C, and an internal filtration device configured by covering the upper surface of the opening of the filtration case C with a cover plate L is 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, the 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 unit 7 through the air stone 11 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 in the filtration chamber 26. As a result, the unpurified water in the water tank V flows (first flow) from the bottom suction port 4 to the pebbles container 16 to the filtration chamber 26 as shown by arrows a and b in FIG. As shown by arrows c and d in FIG. 4, the air is filtered through the upper suction port 41 → the unfiltered chamber 25 → the filter medium 30 → the filter chamber 26 (second flow). 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. .

  When the filtration unit U is separated from the filtration case C in order to perform maintenance of the filtration device, etc., as shown in FIG. 7A, a pair of lock pieces 45 are gripped and indicated by an arrow x at the fingertip. Thus, if it presses inward, the engagement rod 46 can be made to detach | leave from the locking hole 13 of the filtration case main body 1, and as shown to FIG. Both can be separated from the filtration case C with one touch, and the filter medium 30 can be easily and easily cleaned and replaced.

  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 automatically engaged with the locking hole 13 of the filter case C by the elastic force and assembled with a single touch.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  In addition, this 2nd Embodiment differs in the connection structure of the cover board L and the filtration case C from the said 1st Embodiment. The same reference numerals are given to the same components as those in the first embodiment.

  As shown in FIGS. 9 to 11, a pair of lock pieces 45 ′ are suspended downward on both sides in the radial direction of the cover plate L, and an engagement rod is attached to the lower edge of these lock pieces 45 ′. 46 'is integrally formed inwardly.

  On the other hand, a pair of locking holes 13 ′ are formed in the upper portions of the opposite side surfaces of the filtration case body 1. An engagement rod 46 ′ at the lower end of the locking piece 45 ′ of the cover plate L is detachably locked in these locking holes 13 ′.

  Thus, in the second embodiment, the upper part of the filtration case body 1 is elastically deformable in the radial direction (because the upper surface of the filtration case body 1 is open), and the upper part is placed in the radial direction. It is possible to disengage the locking hole 13 ′ from the engagement with the engagement rod 46 ′ of the lock piece 46 ′ by elastically deforming in the direction.

When the filtration unit U is separated from the filtration case C in order to perform maintenance of the filtration device, etc., as shown in FIG. 12A, the filtration case body 1 is gripped and the upper part thereof is pointed by an arrow x ′ with a fingertip. As shown in FIG. 12, when pressed inward, the locking hole 13 ′ can be detached from the engagement rod 46 ′, and as shown in FIG. C than it can be disconnected by one touch, the cleaning of the filter medium 30 can be performed replacing the like easily easily.

Further, if the filtration unit U is accommodated in the lid plate L and accommodated in the filtration case C, and the pressing force to the inside of the filtration case body 1 is released, the locking hole 13 ′ becomes the lock piece 45 ′. The filter device can be assembled to the engagement rod 46 ′ by automatically engaging with the elastic force by one touch.

  Although the first and second embodiments of the present invention have been described above, the present invention is not limited thereto, and various embodiments are possible within the scope of the present invention.

  For example, in the first and second embodiments, 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.

13, 13 '... Locking hole 21 ..... Part to be engaged (upper holding plate)
45, 45 '... lock piece 47 ... support part C ... filtration case L ... lid plate U ... Filtration unit

Claims (2)

A container-shaped filtration case (C) having an open upper surface , a lid plate (L) seated on the open upper surface of the filtration case (C) and detachably closing the upper surface , and accommodated in the filtration case (C) A filtration unit (U),
On both sides of the lid plate (L), there are a plurality of locking pieces (45) that can be respectively engaged and disengaged with a plurality of locking holes (13) provided on both sides of the filtration case (C). When the lock piece (45) is elastically deformed inward in the radial direction of the lid plate (L), it is detached from the locking hole (13), and is suspended. When elastically restored outward in the radial direction of the plate (L), it is adapted to engage with the locking hole (13) ,
A support portion (47) is provided on the lower surface of the lid plate (L), and the support portion (47) is configured such that when the lid plate (L) is seated on the open upper surface of the filtration unit (U), the filtration unit An internal filtration device characterized by being automatically engaged with an engaged portion (21) at the upper part of (U) . A container-shaped filtration case (C) having an open upper surface , a lid plate (L) seated on the open upper surface of the filtration case (C) and detachably closing the upper surface , and accommodated in the filtration case (C) A filtration unit (U),
On both sides of the lid plate (L), a plurality of locking pieces (45 ') that can be respectively engaged and disengaged with a plurality of locking holes (13') provided on both upper side surfaces of the filtration case (C) are integrally suspended. The portion provided with the locking hole (13 ′) of the filtration case (C) is elastically deformable in the radial direction of the filtration case (C), and when elastically deformed inward in the radial direction, When the locking hole (13 ') is detached from the lock piece (45') and elastically restored radially outward, the lock hole (13 ') is engaged with the lock piece (45'). Is supposed to
A support portion (47) is provided on the lower surface of the lid plate (L), and the support portion (47) is configured such that when the lid plate (L) is seated on the open upper surface of the filtration unit (U), the filtration unit An internal filtration device characterized by being automatically engaged with an engaged portion (21) at the upper part of (U) .

Images