JP3697060B2 - Breeding tank filtration device and air diffusion member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air diffuser that disperses air as air bubbles in water for the purpose of generating oxygen and water flow in water in aquariums for raising living bodies such as appreciation fish, edible fish, and aquatic plants, and its air diffusion This relates to the member.
[0002]
[Prior art]
As shown in FIG. 24, the aeration apparatus for a biological rearing tank includes a pressurized air supply device (not shown), an air supply pipe 201 for sending air supplied from the pressurized air supply device, and the air supply The air diffusion member 202 is attached to the end of the pipe 201. As the air diffusing member 202, a porous resin or ceramic air diffusing member provided with fine voids in a three-dimensionally complicated manner so that air can pass therethrough, or a finer void in the structure of a tree. A wooden air diffusing member provided as has been conventionally known.
[0003]
When these air diffusion members 202 are attached to the air supply pipe 201 and installed in the water tank, the air supplied from the pressurized air supply device provided outside the water tank and sent through the air supply pipe 201 is used for a while. The period can be dispersed in water as fine air bubbles. Further, if the length of the air diffusing member 202 is changed, the amount of oxygen supplied to the water and the momentum of the water flow generated by the dispersion can be adjusted, so the capacity of the pressurized air supply device, the size of the water tank, and breeding It can be adapted to the living body.
[0004]
[Problems to be solved by the invention]
However, as described above, the conventional air diffusing member 202 has a structure having fine voids, so that clogging due to residual food, stool such as feces and microbial membranes is likely to occur, and the voids are only on the surface. In addition, there are three-dimensionally complicated insides, so after a certain period, clogging is not eliminated by rubbing with a brush etc., and the original dispersion of air bubbles cannot be obtained. was there.
[0005]
In addition, some ceramic air diffusion members can be restored to their original state by burning them directly with a gas fire when clogged. However, the operation of directly burning the air diffusing member with a gas fire is troublesome and requires caution, and is hardly performed in ordinary households.
[0006]
Therefore, the conventional air diffusing member 202 can only be replaced by a new air diffusing member when clogging occurs, which is expensive for the user and also has a problem of poor image for the act of disposable.
[0007]
Moreover, the fine gaps in the conventional air diffusion member 202 made of resin or ceramic are not evenly present in the whole member or the size of the gap is often various in size. The air bubbles often come out from the air gaps at specific locations rather than from the air bubbles, and especially when clogging occurs, there is also a problem that the air bubbles only come out from only a few air spaces. . There were also individual differences in the dispersion state among the products of the air diffusion member 202.
[0008]
Further, as described above, even when the length of the air diffusion member 202 is adjusted to be long for the purpose of increasing the flow of water generated due to the supply amount or dispersion of oxygen into the water, a specific number can be obtained if clogging occurs. Air is dispersed only in the water from the location, and after all, it is not possible to obtain sufficient dispersion of the air for taking up the space in the aquarium. There was a problem that had to be purchased.
[0009]
Therefore, the object of the present invention is to solve such problems and to uniformly disperse the air into the water from at least two jet outlets without being biased. Even if it is clogged, it can easily and sufficiently remove attached dirt and microbial membranes, so it can be used over and over, not disposable, and by changing the number of grooves and the cross-sectional area, pressurized air An object of the present invention is to provide an aeration apparatus for a breeding aquarium and an air diffusion member thereof capable of adjusting the supply amount of oxygen and the momentum of water flow in accordance with the capacity of the supply apparatus, the size of the aquarium, and the living organism to be reared.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, an air diffusing member for a breeding aquarium according to the present invention includes, in an air diffusing member attached to an end of an air supply pipe, at least two grooves and a facing surface that is detachably covered with the grooves. An air passage is formed between the air passages, and the opening end of the air passage is an air outlet. Examples of the air diffusion member include the following (1) and (2).
[0011]
(1) An air diffusion member in which the facing surface is an inner peripheral surface or an outer peripheral surface of an air supply pipe. As this air diffusion member, the following two modes (a) and (b) can be exemplified.
[0012]
(A) A mode in which grooves are provided on the outer peripheral surface of the rod body, and the outer peripheral surface is detachably inserted into the inner peripheral surface of the end portion of the air supply pipe. In this case, a through hole can be provided at the center of the rod.
(B) A groove is provided on the inner peripheral surface of the cup body, and the inner peripheral surface is formed on the outer peripheral surface of the end of the air supply pipe.Directly andA mode of being detachably inserted. In this case, it is preferable to extend the groove to the inner bottom surface of the cup body.
[0013]
The material of the air diffusion member (1) is not particularly limited, and examples thereof include ceramic, resin, rubber, and metal. The outer diameter (in the case of aspect a) or the inner diameter (in the case of aspect b) of the air diffusing member varies depending on the diameter of the air supply pipe, and fits in such a way that it does not come out when inserted or extrapolated into the air supply pipe. It is preferable to use a diameter. Although the length of an air diffusion member is not specifically limited, About 5-100 mm is easy to handle, and about 10-40 mm is more preferable.
[0014]
The number of grooves has an effect of dispersing air if there are at least two, but the upper limit is not limited, and the number of grooves can be increased as the diameters of the air supply pipe and the air diffusion member are increased, but preferably 3 to 20 More preferably, it is 4-10. One does not have the effect of dispersion, and it is difficult to increase the number from 20 in space. The plurality of grooves may be independent from each other, or may join or intersect in the middle. The cross-sectional area (width and depth) of the groove is not particularly limited. The cross-sectional shape of the groove is not particularly limited, and examples thereof include a semicircular shape, a U shape, a V shape, a rectangle, and a trapezoid. The shape in the length direction of the groove is not particularly limited, and examples thereof include a linear shape parallel to the length direction of the air diffusion member, a spiral shape inclined with respect to the same direction, and the like.
[0015]
(2)In the air diffusing member attached to the end of the air supply pipe, the air diffusing member is formed by detachably connecting at least three connecting bodies including at least two connecting bodies having the same shape, and each connecting body is a cylindrical portion. The connecting body is detachably connected to each other by fitting the outer peripheral surface of the cylinder portion of the other connecting body to the inner peripheral surface of the cylinder portion of the one connecting body to be connected. Between at least two grooves provided relatively to the inner peripheral surface of the cylindrical portion of one connecting body and the outer peripheral surface of the cylindrical portion of the other connecting body, and a facing surface that detachably covers the groove. An aspect in which an air passage is formed and the open end of the air passage is an air outlet.As this air diffusion member, the following two modes (a) and (b) can be exemplified.
[0016]
(A)Of the same shapeThe connecting body includes a thick cylindrical portion having a relatively large inner and outer diameter and a thin cylindrical portion having a relatively small inner and outer diameter via a step wall portion, and is connected to the inner peripheral surface of the thick cylindrical portion of one connected body to be connected. The aspect by which both the connection bodies were connected detachably by fitting the outer peripheral surface of the thin cylinder part of the other connection body.
[0017]
In the connection body of (a), it is preferable that the inner peripheral surface of the thick tube portion and the outer peripheral surface of the thin tube portion are provided with a gradient so that press-fitting works well. The gradient is not particularly limited, but is preferably 0.5 to 20 degrees, and more preferably 1 to 10 degrees. Grooves are provided on the outer peripheral surface of the thin cylindrical portion and the outer surface of the stepped wall portion, and the inner peripheral surface and end surface of the thick cylindrical portion can be opposed surfaces. Moreover, a groove | channel is provided in the internal peripheral surface and end surface of a thick cylinder part, and the outer peripheral surface of a thin cylinder part and the outer surface of a step wall part can also be made into an opposing surface.
[0018]
(B)Of the same shapeThe connecting body includes a conical cylinder portion having a gradient on the inner and outer peripheral surfaces, and the outer peripheral surface of the conical cylinder portion of the other connecting body is fitted to the inner peripheral surface of the conical cylinder portion of one connected body. By this, both connected bodies are detachably connected.
[0019]
In the connection body of (b), a groove is provided on the outer peripheral surface of the conical cylinder portion, and the inner peripheral surface of the conical cylinder portion can be the opposing surface. Moreover, a groove | channel is provided in the inner peripheral surface of a cone cylinder part, and the outer peripheral surface of a cone cylinder part can also be made into an opposing surface.
[0020]
In the air diffusion member (2), the material of the connection body is not particularly limited, and examples thereof include ceramic, resin, rubber, metal, and the like. Although the number of connections of the connection body is not particularly limited, 2 to 20 is preferable and 3 to 10 is more preferable in consideration of the dimensions of the water tank.
[0021]
If there are at least two grooves, there is an effect of dispersing air, but the upper limit is not limited, and the number of grooves can be increased as the diameter of the coupling body increases, but it is preferably 3 to 64, and more preferably 4 ~ 24. One does not have the effect of dispersion, and it is difficult to increase the number from 64. The plurality of grooves may be independent from each other, or may join or intersect in the middle. The cross-sectional area (width and depth) of the groove is not particularly limited. The cross-sectional shape of the groove is not particularly limited, and examples thereof include a semicircular shape, a U shape, a V shape, a rectangle, and a trapezoid. The shape of the groove in the length direction is not particularly limited, and examples thereof include a linear shape parallel to the length direction of the coupling body and a linear shape inclined with respect to the same direction.
[0022]
In order to prevent air bubbles ejected from adjacent jet outlets from moving sideways and coalescing and becoming larger, it is preferable to take the following means (a) (b) (c).
[0023]
(B) The spout should be polygonal. Air bubbles ejected from the ejection port are reduced. In particular, a polygon having a vertex at the upper center is preferable. Air bubbles come to rise right above the apex. Examples of polygons include triangles and pentagons.
[0024]
(B) A vertically extending air bubble guiding ridge or an air bubble guiding groove is provided on the outer peripheral surface of the coupling body located immediately above the ejection port. The term “directly above” includes both directly above and directly above a little shifted laterally. The air bubbles ejected from the ejection port come up directly above while being guided in contact with the air bubble guiding ridges or the air bubble guiding grooves.
[0025]
(C) At least the outer peripheral surface of the coupling body is formed into a smooth glossy surface. Since the contact resistance when air bubbles rise is reduced, the air bubbles ejected from the ejection port are likely to rise directly above. In addition, when a coupling body is shape | molded with resin, resin (for example, polyacetal resin) with which a glossy surface is easy to be obtained by shaping | molding is preferable.
[0026]
In order to allow the air diffusing member to be submerged in its own weight, it is preferable to take the following means (1) and (2).
(1) All or a part of at least two connected bodies are made of a material having a specific gravity of 2 or more. The specific gravity is more preferably 3 or more.
(2) All or a part of at least two connected bodies should have weights embedded.
[0027]
When the air diffusing member is used by being inserted into the cylinder, the air diffusing member is supported on the outer peripheral surface of the coupling body and on the inner peripheral surface of the cylindrical body to support the air diffusing member at the center of the cylindrical body. It is preferable that at least two protrusions are provided. Three or more protrusions are more preferable.
[0028]
  Also, for the breeding aquarium of the present inventionThe filtration device is for a breeding aquarium provided with a pressurized air supply device, an air supply pipe for sending air supplied from the pressurized air supply device, and an air diffusion member attached to an end of the air supply pipe A breeding aquarium filtration device in which an air diffuser is combined as a power source for generating water flow, wherein the air diffusion member is detachably inserted into the inner peripheral surface of one end of the air supply pipe, and the rod Consisting of at least two grooves formed on the outer peripheral surface of the rod and a through-hole formed in the center of the rod body, forming an air passageway between each groove and the inner peripheral surface of the air supply pipe, An air diffusing member projecting from one end portion of the air supply pipe is formed in the blind hole portion of the pedestal provided at the bottom center portion of the container of the submersible filtration device, with the open end of the air passageway being an air outlet. The tip is inserted and fixed via an elastic short pipe, and the lower end surface of the air diffusion member and the inner bottom surface of the blind hole A gap is provided between, and forms an air passage path between the tip portion and the elastic short pipe of the air diffusing member, the spout of the air is also the open end of the air passage tractIt is characterized by that.
[0029]
  Another breeding water tank filtration device according to the present invention includes a pressurized air supply device, an air supply pipe for sending air supplied from the pressurized air supply device, and an air diffusion attached to an end of the air supply pipe. A breeding aquarium filtration device combining a breeding aquarium air diffuser with a member as a water flow generation power source, wherein the air diffusion member includes at least three coupled bodies including at least two identically shaped coupled bodies. Each connecting body is provided with a cylindrical portion, and both are connected by fitting the outer peripheral surface of the cylindrical portion of the other connecting body to the inner peripheral surface of the connecting portion. Are connected to each other in a detachable manner, and at least two grooves provided relatively to the inner peripheral surface of the cylindrical portion of one connected body and the outer peripheral surface of the cylindrical portion of the other connected body And an air passageway is formed between the groove and the opposing surface that detachably covers the groove. The opening end of the passageway is an air outlet, and the air diffusion member is inserted into a cylindrical body mounted via a stand at the center of the bottom of the container of the submersible filtration device, and the outer periphery of the air diffusion member The tip of at least two protrusions provided on the surface is brought into contact with the inner peripheral surface of the cylinder, and the air diffusion member is supported at the center of the cylinder.
[0030]
In the said invention, a pressurized air supply apparatus is not limited to a specific structure, A common air pump can be illustrated.
[0031]
The air supply pipe is not particularly limited, and examples thereof include flexible bendable pipes such as silicon resin tubes and soft vinyl chloride resin tubes, and non-flexible pipes such as acrylic resin tubes and hard polyvinyl chloride resin tubes. Depending on the setting, each can be used alone or in appropriate combination.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
First, FIG. 1 to FIG. 9 show an aeration apparatus 1 for breeding aquarium according to a first embodiment that embodies the present invention, FIG. 1 to FIG. 3 show its usage example I, and FIG. 4 to FIG. II and FIGS. 8 to 9 show use examples III thereof, respectively.
[0033]
As shown in FIGS. 1 to 3, the aeration apparatus 1 for a breeding water tank according to the first embodiment includes a pressurized air supply device 2 and an air supply pipe 3 that sends air supplied from the pressurized air supply device 2. And an air diffusion member 4 attached to the end of the air supply pipe 3. A commercially available air pump is used for the pressurized air supply device 2, and a commercially available flexible silicone resin tube is used for the air supply pipe 3. The inner diameter of the air supply pipe 3 is 3 mm (or 4 mm).
[0034]
The air diffusion member 4 is provided with six grooves 6 on the outer peripheral surface of a ceramic round bar 5 having a length of 10 to 40 mm and an outer diameter of about 4.5 mm (or about 5.5 mm). The surface is detachably inserted into the inner peripheral surface of one end of the air supply pipe 3. The outer diameter of the air diffusing member 4 is about 1.5 mm larger than the inner diameter of the air supply pipe 3 and is tightened by the air supply pipe 3 that has been elastically expanded at the time of insertion. ) In this example, the air diffusion member 4 is used so that the middle part of the air diffusion member 4 is inserted into the air supply pipe 3 and the remaining part of the air diffusion member 4 protrudes from the air supply pipe 3. And the air passage way 7 is formed in the middle part of each inserted groove 6 between the inner peripheral surface of the air-feeding pipe 3 as the opposing surface that detachably covers each groove 6, The opening end of the road 7 is an air outlet 8. The cross-sectional shape of each groove 6 is, for example, a substantially semicircular shape, and the shape in the length direction of each groove 6 is a linear shape parallel to the length direction of the air diffusion member 4.
[0035]
The ceramic air diffusing member 4 of this example is manufactured by extruding porcelain clay by an extrusion molding machine (not shown), cutting it to an appropriate length, and firing it in a gas pot at about 1300 ° C. The In addition, the said groove | channel 6 is formed by attaching the metal mold | die mouth which the said groove | channel 6 is formed in the extrusion port of an extrusion molding machine. Moreover, it is not limited to the extrusion molding method, and can be manufactured by mold molding or the like.
[0036]
In order to assemble the aeration apparatus 1 for breeding aquarium configured as described above, the air diffusion member 4 is inserted into one end of the air supply pipe 3 and the other end of the air supply pipe 3 is connected to the pressurized air supply apparatus 2. Just connect to.
[0037]
The usage example I shown in FIGS. 1-3 is an example which used the said aeration apparatus 1 for breeding water tanks only for the aeration aiming at the oxygen supply to a biological body. To use in this way, the pressurized air supply device 2 is installed outside the water tank 10, the air supply pipe 3 and the air diffusion member 4 are put into the water 11 in the water tank 10, and the pressurized air supply device 2 is Just activate it. In order to stabilize the position of the air diffusion member 4, that is, the place of air diffusion in the water tank 10, it is preferable to fix a part of the air supply pipe 3 to the inner wall surface of the water tank 10 with a suction cup 12 or the like.
[0038]
The air supplied from the pressurized air supply device 2 is sent through the inside of the air supply pipe 3, and is jetted and dispersed in the water 11 as the air bubbles 13 from the respective jet outlets 8 through the six air passages 7. Is done. And the air passage 7 formed between the groove 6 and the inner peripheral surface of the air feeding pipe 3 as a facing surface that detachably covers the groove 6 is complicated in a three-dimensional manner as in the prior art. Since it is not a fine gap but a simple one- or two-dimensional passage, the following actions and effects (1) to (4) can be obtained.
[0039]
(1) The cross-sectional shape and cross-sectional area (width and depth) of each groove 6 can be formed uniformly. For this reason, the air bubbles 13 are evenly distributed from the respective jet outlets 8 of the entire air passage 7 without being biased to a part of the gap as in the prior art, and stably with a relatively uniform bubble diameter. Can be ejected and dispersed inside. Moreover, the individual difference of a dispersion state can also be eliminated between the products of the air diffusion member 4. In addition, the cross-sectional shape, cross-sectional area, etc. of each groove | channel 6 can also be formed in arbitrary unevenness, In that case, a bubble diameter can also be changed.
[0040]
(2) The air passage 7 is not easily clogged by filth such as residual bait, feces, and microbial membranes, and the dispersion of the air bubbles 13 is not easily lowered due to the clogging.
[0041]
(3) Even if the air passage 7 is clogged, if the air diffusing member 4 is pulled out from the air supply pipe 3, the facing surface of the groove 6 is eliminated and the groove 6 is opened, so that the groove 6 is lightly rubbed with a brush or the like. Only the dirt, microbial film, etc. adhering to the groove 6 can be easily and sufficiently removed, and the function is sufficiently restored. Therefore, the air diffusion member 4 is not disposable and can be used over and over again.
[0042]
(4) By changing the number of the grooves 6 and the cross-sectional area, the amount of oxygen supply and the momentum of the water flow are increased or decreased in accordance with the capacity of the pressurized air supply device 2, the size of the water tank 10, or the living organism to be bred. Can do.
[0043]
The usage example II shown in FIGS. 4 to 7 is an example in which the aeration apparatus 1 for breeding aquarium is combined with the submerged filtration apparatus 20 so that it can be used as a power source for generating water flow of the submerged filtration apparatus 20. It is. In this example, the aeration apparatus 1 for breeding aquarium is partially changed and used. That is, the air diffusion member 4 having one through hole 9 provided at the center of the round bar 5 is used, and a silicon resin-based elastic short pipe is provided at the lower end of the air diffusion member 4 protruding from the air supply pipe 3. 28 is extrapolated.
[0044]
The submerged filtration device 20 is a ceramic top-open container 21, a pedestal 22 provided at the bottom center of the container 21, and a detachable attachment to the pedestal 22 via, for example, a sleeve-like elastic member 23. And a ceramic cylinder 24 to be made. The pedestal 22 includes a short cylindrical portion 30 and a plurality of radial rib-shaped cylindrical body supporting portions 31 provided on the outer periphery thereof. The cylindrical body supporting portion 31 is a fitting piece and a cylindrical body to which the cylindrical body 24 is fitted. 24 is formed in an L-shape from the support piece that receives 24. When the cylindrical body 24 is fitted and attached to the pedestal 22, a plurality of water passages 32 formed between the cylindrical body support portions 31 and between the cylindrical bodies 24 become passages for the water 11.
[0045]
A space formed between the cylinder 24 and the inner wall of the container 21 is a filtration chamber 25, in which a filter material 26 made of porous ceramic and a sponge-like filter material 27 thereon are provided. Yes. The air supply pipe 3 is inserted into the cylindrical body 24, and the upper end portion of the air diffusion member 4 is inserted into one end portion of the air supply pipe 3, and the lower end portion of the air diffusion member 4 has an elastic short pipe 28. Through the blind hole 29 of the pedestal 22. A gap 33 is provided between the lower end surface of the air diffusion member 4 and the inner bottom surface of the blind hole portion 29. An air passage 34 is formed between the lower end of the air diffusion member 4 and the elastic short pipe 28, and an open end of the air passage 34 serves as an air jet 35.
[0046]
The assembling of the aeration apparatus 1 for breeding water tank and the submerged charging filter apparatus 20 of the present example is performed as follows. However, the following procedure is an example, and can be changed as appropriate.
(1) Insert the upper end of the air diffusion member 4 into one end of the air supply pipe 3.
(2) The elastic short pipe 28 is extrapolated to the lower end of the air diffusion member 4.
(3) Attach the elastic member 23 around the base 22.
(4) Insert the lower end of the air diffusion member 4 into the blind hole 29 of the base 22 together with the elastic short pipe 28.
(5) Insert the cylinder 24 into the base 22. At this time, the air supply pipe 3 passes through the cylindrical body 24.
(6) A filter medium 26 made of porous ceramic is put in a filter chamber 25 formed between the cylinder 24 and the inner wall of the container 21, and a sponge-like filter medium 27 is provided on the filter medium 26.
(7) Connect the other end of the air supply pipe 3 to the pressurized air supply device 2 installed outside the water tank 10.
[0047]
According to the aeration apparatus 1 for breeding aquarium and the submerged filtration apparatus 20 in this example, the air supplied from the pressurized air supply device 2 is sent through the inside of the air supply pipe 3 and passes through six airs. The air bubbles 13 are jetted / dispersed in the water 11 from the respective jet outlets 8 through the roads 7, passed through the through-holes 9 and the gaps 33, and then passed through the six air passages 34, from each jet outlet 35. Are also blown and dispersed in the water 11 as air bubbles 13. The dispersed air bubbles 13 rise in the cylinder 24 and are ejected into the water tank 10 from the upper opening of the cylinder 24. Due to the movement of the air bubbles 13, the water 11 in the cylindrical body 24 is also discharged from the upper opening. Further, with this discharge, the water 11 in the filtration chamber 25 formed between the inner wall of the container 21 provided with the filter media 26 and 27 also passes through the water passage 32 formed in the pedestal 22. It is discharged from the upper opening. By this movement, the water 11 in the water tank 10 enters from the upper opening of the container 21 and is filtered by passing through a sponge-like filter medium 27 and a ceramic filter medium 26 provided in the filter chamber 25. The water passes through the water passage 32 of the base 22 and is discharged from the upper opening of the cylinder 24.
[0048]
The use example III shown in FIGS. 8 to 9 is an example in which the aeration apparatus 1 for breeding aquarium is combined with the underwater bottom surface filtration device 40 so that it can be used as a water flow generation power source of the underwater bottom surface filtration device 40. It is.
[0049]
The underwater bottom-type filtration device 40 includes a thin box 41 having a slit (not shown) at the top and no bottom, a cylindrical pipe 42 having a lower end inserted into one portion of the box 41, and a cylindrical pipe 42. It consists of an L-shaped pipe 43 connected to the upper end. The other end of the air supply pipe 3 is connected to the outside of the water tank 10 through a hole 44 provided so that the air supply pipe 3 is fitted to the top of the L-shaped pipe 43 without a gap. It is used by connecting to the pressurized air supply device 2 installed in In the cylindrical pipe 42, the air diffusion member 4 is inserted into one end portion of the air supply pipe 3.
[0050]
The assembling of the aeration apparatus 1 for breeding water tank and the underwater bottom surface filtration apparatus 40 of this example is performed as follows. However, the following procedure is an example, and can be changed as appropriate.
(1) A thin box 41 is placed in the water 11.
(2) The air supply pipe 3 is inserted into the hole 44 of the L-shaped pipe 43, and the air diffusion member 4 is inserted into one end of the air supply pipe 3.
(3) The cylindrical pipe 42 is fitted to the L-shaped pipe 43. At this time, the air supply pipe 3 is placed in the cylindrical pipe 42.
(4) Connect the other end of the air supply pipe 3 to the pressurized air supply device 2 installed outside the water tank 10.
{Circle around (5)} Sand 45 is laid on the entire bottom surface of the water tank 10 so that the box 41 covers it.
[0051]
According to the aeration apparatus for breeding aquarium 1 and the underwater bottom surface type filtration apparatus 40 of this example, the air supplied from the pressurized air supply apparatus 2 is sent through the inside of the air supply pipe 3, and the air diffusion member 4 Air bubbles 13 are ejected from the air passage 7. The air bubbles 13 rise in the cylindrical pipe 42 and are ejected from the L-shaped pipe 43 into the water 11 in the water tank 10. Due to the movement of the air bubbles 13, the water 11 in the cylindrical pipe 42 is also discharged from the L-shaped pipe 43. As the water 11 is discharged, the water 11 in the water tank 10 is sucked from the upper slit (not shown) of the thin box 41 installed at the bottom of the water tank 10 and flows to the cylindrical pipe 42. At this time, the water 11 is filtered by passing through the sand 45 laid on the thin box 41.
[0052]
Next, FIGS. 10 to 12 show an aeration apparatus for a breeding water tank according to a second embodiment that embodies the present invention. This aeration apparatus for breeding aquarium is different from the first embodiment only in the structure of the air diffusing member 50, and any of the usage examples I, II and III can be used.
[0053]
  The air diffusion member 50 is provided with eight grooves 52 on the inner peripheral surface of a ceramic cup body 51 having a length of 10 to 40 mm and an inner diameter of about 2.5 mm or about 3.5 mm.InsideThe peripheral surface is detachably attached to the outer peripheral surface of one end of the air supply pipe 3. The inner diameter of the air diffusion member 4 is about 0.5 mm from the inner diameter of the air supply pipe 3.smallSince it is tightened to the outer periphery by the air supply pipe 3 elastically reduced in diameter at the time of insertion, it cannot be easily removed after insertion (it can be pulled out if it is pulled strongly). Each groove 52 extends to the inner bottom surface of the cup body 51, and intersects and merges at the center of the inner bottom surface. Each groove 52 forms an air passage 53 between the outer peripheral surface of the air supply pipe 3, and the open end of the air passage 53 serves as an air outlet 54.
[0054]
According to the air diffusing member 50 of the present example, the air sent through the air supply pipe 3 once exits the air supply pipe 3, passes through the inner bottom surface of the cup body 51, and then passes through each air passageway 53. It is ejected as air bubbles from the spout 54 and dispersed in water. And each air passage 53 formed between each groove | channel 52 and the internal peripheral surface of the air supply pipe 3 is not the fine space | gap which was complicated in three dimensions like the past, but one to two-dimensional. Therefore, the same operation and effect (1) to (4) as in the first embodiment can be obtained.
[0055]
Next, FIGS. 13-21 has shown the aeration apparatus for breeding water tanks of 3rd embodiment which actualized this invention. This aeration apparatus for breeding aquarium is different from the first embodiment only in the structure of the air diffusing member 60, and any of the usage examples I, II and III can be used. FIGS. 17-21 has shown the example of a change of the submersion type | mold filtration apparatus 20 used in the usage example II.
[0056]
The air diffusing member 60 includes, in order from the upper side (the base end side connected to the air supply pipe) to the lower side (the front end side) in FIGS. The coupling bodies 62, 62 and one tip-side coupling body 63 are assembled in such a manner that a total of four coupling bodies are coupled. Each coupling body 61, 62, 62, 63 is injection-molded with polyacetal resin, and in particular, the outer peripheral surface is formed into a smooth glossy surface.
[0057]
The proximal end side coupling body 61 is formed by integrally forming a pipe-like connection portion 64, a thin tube portion 66, and a step wall portion 65 that protrudes outward from the upper end of the thin tube portion 66. When connecting the air supply pipe 3 having an inner diameter of 4 mm, the outer diameter of the connecting portion 64 is 5 mm and the inner diameter is 3 mm. An annular protrusion 67 is formed on the outer periphery of the connection portion 64, and is designed to cut into the inner periphery of the air supply pipe 3 so as to be airtight. The length of the thin tube portion 66 is 4.5 mm, and the inner diameter of the air passage 68 passing through the center thereof is 6 mm. The outer peripheral surface of the thin cylindrical portion 66 is provided with a gradient of 3 degrees so that the diameter decreases toward the lower end, and the outer diameter is 10 mm at a position 1 mm from the upper end. On the outer peripheral surface of the narrow tube portion 66 and the lower surface of the step wall portion 65, there are 12 outer peripheral surfaces of the thin tube portion 66 that extend vertically from the lower end to the upper end and the lower surface of the step wall portion 65 extends radially from the inner edge to the outer edge. The grooves 69 are formed at equal intervals. The groove 69 has a V shape with the groove bottom as the apex and an internal angle of 60 degrees, and the depth to the groove bottom is 0.5 mm.
[0058]
Each intermediate part coupling body 62 is integrally formed so that a thick cylindrical part 70 having a relatively large inner and outer diameter and a narrow cylindrical part 66 having a relatively small inner and outer diameter are continuous via a step wall part 65. Become. The length of the thick cylindrical portion 70 is 7.5 mm, and the depth of the hollow portion 71 in the thick cylindrical portion 70 (depth to the upper surface (inner surface) of the step wall portion 65) is 5.5 mm. The inner circumferential surface of the thick cylindrical portion 70 is provided with a gradient of 3 degrees so that the diameter is reduced toward the lower end, and the inner diameter is 10 mm at the upper end. The outer peripheral surface of the thick cylindrical portion 70 is provided with a gradient of 3 degrees so that the diameter decreases toward the lower end, and the outer diameter at the upper end is 13 mm. The narrow tube portion 66 is the same as the thin tube portion 66 of the base-end-side coupling body 61, and the air passage 68 is formed in the same manner, and the outer peripheral surface of the narrow tube portion 66 and the lower surface (outer surface) of the step wall portion 65. 12 grooves 69 are formed in the same manner. In addition, on the outer peripheral surface of the thick cylindrical portion 70, twelve circular arc-shaped air bubble guide protrusions 73 that are positioned immediately above the grooves 69 and extend vertically are formed at equal intervals.
[0059]
The distal end side coupling body 63 is formed by integrally forming a thick cylindrical portion 74, a bottom wall portion 77 thereof, and four radial projecting portions 75. The depth of the hollow portion 76 in the thick cylindrical portion 74 is 5.5 mm, and a recess 78 is formed at the center of the upper surface of the bottom wall surface 77. The inner peripheral surface of the thick cylindrical portion 74 is provided with a gradient of 3 degrees so that the diameter is reduced toward the lower end, and the inner diameter is 10 mm at the upper end. Although the number of the protrusion parts 75 should just be at least two, three or more are preferable.
[0060]
Then, the outer peripheral surface of the narrow cylindrical portion 66 of the base end side connecting body 61 is fitted into the inner peripheral surface of the thick cylindrical portion 70 of the upper intermediate connecting body 62 so that both the connecting bodies 61 and 62 can be attached and detached. When the outer peripheral surface of the narrow cylindrical portion 66 of the intermediate connecting body 62 is connected to the inner peripheral surface of the thick cylindrical portion 70 of the lower intermediate connecting body 62, both the connecting bodies 62 and 62 are attached and detached. It is connected freely, and the outer peripheral surface of the thin cylindrical portion 66 of the intermediate connecting body 62 is fitted into the inner peripheral surface of the thick cylindrical portion 74 of the distal end side connecting body 63, so that both the connecting bodies 62 and 63 are detachable. It is connected to.
[0061]
At the time of these fittings, if the portion from the lower end of the thin tube portion 66 to the position of 3.5 mm is inserted into the thick tube portions 70, 74, the slanted outer diameter of the thin tube portion 66 and the thick tube portions 70, 74 are inserted. And the inner peripheral surface of the thick cylindrical portions 70 and 74 are in contact with each other. Further, when the remaining 1 mm of the thin cylindrical portion 66 is strongly fitted (press-fitted) into the thick cylindrical portions 70 and 74, the lower surface of the step wall portion 65 comes into contact with the upper end surfaces of the large cylindrical portions 70 and 74 and stops. Then, an air passageway 79 having a triangular cross section is formed between the groove 69 of the thin cylindrical portion 66 and the stepped wall portion 65 and the inner peripheral surface and the upper end surface of the thick cylindrical portions 70 and 74 as the opposing surfaces that are detachably attached thereto. At the opening end of the air passageway 79, a triangular spout 80 having a vertex at the upper center is formed. Further, a 1 mm gap 81 can be formed between the lower end surface of the thin cylindrical portion 66 and the upper surface of the step wall portion 65 or the bottom wall portion 77, and the lower end of each groove 69 communicates with the gap 81.
[0062]
The connecting portion 64 of the air diffusion member 60 assembled as described above is detachably inserted into the inner peripheral surface of one end portion of the air supply pipe 3, and the other end portion of the air supply pipe 3 is shown in FIG. If it connects with the pressurized air supply apparatus 2 of one Embodiment, the aeration apparatus for breeding water tanks of this embodiment will be comprised.
[0063]
In the usage example I of this embodiment, the air diffusion member 4 of the first embodiment shown in FIG. 1 is replaced with the air diffusion member 60 of this embodiment (not shown). Except for the first embodiment.
[0064]
The air supplied from the pressurized air supply device 2 is sent through the inside of the air supply pipe 3, enters the air passages 68 of the connecting bodies 61, 62, 62 from the connecting portion 64, and reaches the bottom of the leading end side connecting body 63. Since it is stopped by the wall portion 77, it enters each gap 81 from each ventilation path 68, passes through an air passageway 79 formed by each groove 69 and its opposing surface, and is jetted into the water 11 as an air bubble 13 from each jet outlet 80. Distributed. The air passageway 79 formed between the groove 69 and the facing surface that is detachably attached to the groove 69 is not a fine gap complicated in a three-dimensional manner as in the prior art, but a one-dimensional or two-dimensional simple structure. Since it is a passage way, the said effect and effect (1)-(4) similar to 1st embodiment are obtained. Furthermore, according to the present embodiment, the following actions and effects (5) to (10) are also obtained.
[0065]
(5) Since the connecting bodies 61, 62, 62, 63 are detachably connected by the press contact between the outer peripheral surface of the thin cylindrical portion 66 and the inner peripheral surfaces of the thick cylindrical portions 70, 74 by the press-fitting, It can be done quickly and easily with a single touch.
[0066]
(6) Since the jet outlet 80 is triangular, for example, the air bubbles 13 ejected from the jet outlet 80 are smaller than in a semicircular case. Moreover, since it is a triangle with an apex at the top, as shown in FIG. 16, when the air bubble 13 is ejected from the ejection port 80, the air bubble 13 is restricted to both sides of the ejection port 80 and floats right above. For this reason, the air bubbles 13 ejected from the adjacent ejection ports 80 move in the lateral direction and are less likely to merge and become large, and the fine air bubbles 13 can be floated, and the efficiency of oxygen supply and water flow generation is good. .
[0067]
(7) Since the air bubble guide protrusion 73 is formed on the outer peripheral surface of the thick cylindrical portion 70 located immediately above the jet port 80, the air bubble 13 jetted from the jet port 80 is as shown in FIG. Then, the air bubble guide ridge 73 comes into contact with the air bubble guide ridge 73 and rises right above. For this reason, the air bubbles 13 ejected from the adjacent jet outlets 80 are less likely to move and merge in the lateral direction during the rising, and the efficiency of oxygen supply and water flow generation is also good.
[0068]
(8) Since the outer peripheral surface of the thick cylindrical portion 70 of the intermediate coupling body 62 is formed as a smooth glossy surface (including the surface of the air bubble guide protrusion 73), the contact when the air bubbles 13 rise. Resistance is small. For this reason, the air bubbles 13 ejected from the adjacent ejection ports 80 are less likely to move and merge in the lateral direction due to contact resistance, and the efficiency of oxygen supply and water flow generation is also good. The polyacetal resin not only easily obtains a glossy surface by injection molding, but also has excellent wear resistance, dimensional stability, organic chemical resistance, and the like.
[0069]
(9) By reducing the number of intermediate part coupling bodies 62 to be connected to zero or one, or increasing the number to three or more, the number of jet outlets 80 can be greatly increased or decreased. Therefore, the action / effect (4) can be further enhanced. In addition, it is preferable that the cross-sectional area of the air passage 68, the gap 81, or the groove 69 is increased in the connecting body on the tip side so that the air flow rate on the tip (lower end in FIG. 13 and the like) side is not reduced by the flow resistance.
[0070]
(10) Assume that all or some of the coupling bodies 61, 62, 62, 63 are embedded with weights, or that the coupling body itself is made of a material having a specific gravity of 2 or more (metal such as stainless steel, ceramics, etc.). Thus, the air diffusing member 60 can be submerged in its own weight, and there is no need to attach a separate weight for submerging to the outside.
[0071]
In the usage example II of the present embodiment, the air diffusing member 4 of the first embodiment shown in FIGS. 4 and 5 may be replaced with the air diffusing member 60 of the present embodiment (not shown). 17 to 21 may be combined with the submersible filtration device 90 of the modification example.
[0072]
The submersible filtration device 90 is detachably mounted on a glass container 91, a stand 92 formed in an umbrella shape with resin and placed on the bottom center of the container 91, and a central cylindrical part 93 of the stand 92. A cylindrical body 94, a cylindrical body supporting member 95 that supports the cylindrical body 94 at the center of the mouth portion of the container 91 and prevents rattling, and is detachably screwed to the mouth portion of the container 91 via a packing 96. A lid 97, a packing 99 that seals between the lower end of the central cylindrical portion 98 of the lid 97 and the cylindrical body supporting member 95, an upright cylinder 100 that is detachably screwed to the central cylindrical portion 98, An extension cylinder 101 is detachably connected to the upper end of the cylinder 100.
[0073]
The stand 92 is for raising the bottom with an umbrella shape to provide a passage for the water 11 thereunder. As shown in FIG. 20, there are 16 slits 102 that are not cut out to the outer peripheral edge, and the outer peripheral edge. The notched eight slits 103 are alternately formed at a ratio of two to one. Both of the slits 102 and 103 become passages for the water 11, and the slit 103 gives the stand 92 elastic elasticity in the vertical direction (with expansion / contraction deformation in this example). The number of slits 102 is not particularly limited, and may be replaced with a through hole or the like. The number of slits 103 is not particularly limited, but is preferably 2 to 32, and more preferably 3 to 8. If one is used, the elastic deformability is insufficient and becomes asymmetrical, and if it exceeds 32, the strength of the stand 92 tends to decrease. The glass container 91 may vary by several millimeters in the height direction due to manufacturing errors, and the stand 92 and the cylindrical body 94 may be compressed more than designed when the lid body 97 is screwed. At this time, since the stand 103 is elastically deformed as described above by expanding the width of the slit 103, the variation can be absorbed. Note that the stand 92 may be provided with elastic deformation in the vertical direction by various structures other than the slit 103.
[0074]
As shown in FIG. 21, the cylindrical body support member 95 includes a cylindrical portion 109 through which the cylindrical body 94 passes, and three protrusions that are arranged radially on the outer periphery of the cylindrical portion 109 and come into contact with the inner peripheral surface of the mouth portion of the container 91. The part 110 is integrally formed of resin. A fitting groove 112 for fitting the packing 99 is formed at the upper end of the cylindrical portion 109. The protrusion 110 is formed in a planar loop having a ginkgo leaf shape, and has an elastic deformation property in the expansion / contraction direction due to the curved side surface portion 111. The glass container 91 may vary by about 0.5 to several millimeters in the inner diameter of the mouth due to a manufacturing error, but this variation can be absorbed by the elastic deformability of the protrusion 110. The protrusion 110 may have elastic deformation in the expansion / contraction direction by various structures other than the loop. Although the number of the protrusions 110 should just be at least two, three or more are preferable.
[0075]
A space formed between the cylinder 94 and the inner wall of the container 91 serves as a filtration chamber 25, and a filter medium 26 made of porous ceramic is provided there. Further, a sponge-like filter medium 27 is placed on the mesh portion 104 of the lid body 97, and a top cover 106 for stopping the filter medium 27 is attached to the lid body 97 via a ring 105. The air supply pipe 3 is inserted into the cylinder 94, and a pipe support member 107 that supports the air supply pipe 3 at the center of the cylinder 94 and prevents rattling is interposed in the middle of the air supply pipe 3. Has been. The pipe support member 107 includes a short pipe 113 connected to the air supply pipe 3 and four projecting plate portions 114 that are radially disposed on the outer periphery of the short pipe 113 and contact the inner peripheral surface of the cylindrical body 94 with a resin. Molded. The number of projecting plate portions 114 may be at least two, but is preferably three or more.
[0076]
The air diffusion member 60 is attached to one end of the air supply pipe 3. The tip of the projection 75 contacts the inner peripheral surface of the cylinder 94, and supports the air diffusion member 60 on the center of the cylinder 94 to prevent rattling. At the upper end of the extension cylinder 101, the air supply pipe 3 is provided with an air bubble guide 108 for letting out the air bubbles 13 to the side.
[0077]
Even when the submersible filtration device 90 of this modified example is used, the same operations and effects as those obtained when the submersible filtration device 20 of the first embodiment is used can be obtained.
[0078]
The usage example III of the present embodiment is obtained by replacing the air diffusion member 4 of the first embodiment shown in FIGS. 8 and 9 with the air diffusion member 60 of the present embodiment (not shown). The same actions and effects can be obtained.
[0079]
Next, FIG.22 and FIG.23 has shown the aeration apparatus for breeding water tanks of 4th embodiment which actualized this invention. This aeration apparatus for breeding aquarium is different from the third embodiment only in the structure of the air diffusing member 120, and includes the use example I, the use example II (including the case where the underwater charging type filtration device 90 is used) and the use. Any use of Example III is possible.
[0080]
22 and 23, the air diffusion member 120 has three types (in this case, one base end connecting body 121, two intermediate section connecting bodies 122, and one tip side connecting body 123 in order from top to bottom). As described later, there are substantially two types). A total of three connected bodies are connected and assembled. Each coupling body 121, 122, 123 is injection-molded with polyacetal resin, and in particular, the outer peripheral surface is formed into a smooth glossy surface.
[0081]
The base-end connecting body 121 is formed by integrally forming a pipe-shaped connecting portion 124 and a conical cylinder portion 125 having a 15-degree gradient so that the lower end of the outer peripheral surface is reduced in diameter. An annular protrusion 126 is formed on the outer periphery of the connecting portion 124. The inner peripheral surface of the conical cylinder part 125 is a ventilation path 127 that penetrates straight. Twelve V-shaped grooves 128 extending from the lower end to the upper end are formed at equal intervals on the outer peripheral surface of the conical cylinder portion 125.
[0082]
Each intermediate part coupling body 122 is composed of a conical cylinder part 129 having a gradient of 15 degrees so that the lower end of the inner peripheral face is reduced toward the lower end. However, the lower part of the inner peripheral surface has no gradient and the inner flange 130 is formed, and the lower part is a ventilation path 127 that penetrates straight. Twelve V-shaped grooves 128 extending from the lower end to the upper end are formed at equal intervals on the outer peripheral surface of the conical cylinder portion 129.
[0083]
The distal end side connection body 123 is the same as the intermediate part connection body 122 except that a weight 131 made of lead or the like is fitted to the air passage 127 and is closed. Therefore, in the air diffusing member 120 of the present embodiment, it is only necessary to form substantially two types of connected bodies, and the mold cost and the like can be reduced.
[0084]
Then, the lower part of the outer peripheral surface of the conical cylinder part 125 of the base end side connecting body 121 is fitted (press-fitted) into the inner peripheral surface of the conical cylinder part 129 of the intermediate part connecting body 122, whereby both the connecting bodies 121 and 122 are attached and detached. By freely connecting and inserting (press-fitting) the lower part of the outer peripheral surface of the conical cylinder part 129 of the intermediate part connection body 122 into the inner peripheral surface of the conical cylinder part 129 of the distal end side connection body 123, both the connection bodies 122, 123 is detachably connected.
[0085]
When fitted (press-fit) as described above, air having a triangular cross section is formed between the grooves 128 on the outer peripheral surfaces of the conical cylinder portions 125 and 129 and the inner peripheral surface of the conical cylinder portion 129 as a facing surface that is detachably covered thereto. A passageway 132 is formed, and a triangular jet outlet 133 is formed at the open end of the air passageway 132. Further, a 1 mm gap 134 can be formed between the lower end surfaces of the conical cylinder portions 125 and 129 and the upper surface of the inner flange 130, and the lower ends of the grooves 128 communicate with the gap 134.
[0086]
According to the air diffusing member 120 of this example, air enters the air passages 127 of the coupling bodies 121 and 122 from the connection portion 124 and is stopped by the weight 131 of the distal end side coupling body 123. 134, passes through the air passageway 132 formed by each groove 128 and its opposing surface, and is jetted and dispersed into the water as air bubbles from each jet outlet 133. Further, the groove 128 above the jet outlet 133 functions as an air bubble guide groove. Therefore, the same operations and effects (1) to (10) as in the third example can be obtained by this embodiment.
[0087]
In addition, this invention is not limited to the said embodiment, For example, it can also be suitably changed and embodied as follows, for example in the range which does not deviate from the meaning of invention.
(A) The air diffusion member 4 provided with the through hole 9 used in the usage example II is used in the usage example I or III, and air bubbles are also ejected from the jet outlet at the tip of the through hole 9.
(B) The number of the through holes 9 is at least two, preferably 2 to 7, and the number of jets is increased.
(C) The usage method of the aeration apparatus for breeding water tanks is not limited to the usage examples I to III, and can be used by any method by combining other apparatuses.
[0088]
(D) In 3rd embodiment, the groove | channel 69 is formed in the internal peripheral surface and upper end surface of the thick cylinder parts 70 and 74, and the outer peripheral surface of the thin cylinder part 66 and the lower surface of the step wall part 65 are made into an opposing surface.
(E) In the fourth embodiment, a groove 128 is formed on the inner peripheral surface of the conical cylinder portion 125, and the outer peripheral surface of the conical cylinder portion 125 is an opposing surface.
[0089]
【The invention's effect】
  For breeding aquarium according to the present inventionfiltrationSince the apparatus and its air diffusion member are configured as described above, air can be evenly dispersed in the water from at least two jet outlets, and clogging due to dirt, microbial films, etc. is unlikely to occur. Even if it is clogged, it can easily and sufficiently remove attached dirt and microbial membranes, so it can be used over and over, not disposable, and by changing the number of grooves and cross-sectional area, pressurized air According to the ability of the supply device, the size of the water tank, and the living organism to be bred, the oxygen supply amount and the momentum of the water flow can be increased or decreased.
[Brief description of the drawings]
FIG. 1 is a front view showing a use example I in which a breeding tank aeration apparatus according to a first embodiment of the present invention is used exclusively for aeration.
FIG. 2 is a perspective view showing the vicinity of an air diffusion member in Usage Example I.
FIG. 3 is an end view of FIG. 2;
FIG. 4 is a front view showing a usage example II in which the air diffusing device is used as a water flow generation power source of the submersible filtration device.
FIG. 5 is a cross-sectional view showing the vicinity of the air diffusion member and the submersible filtration device in the same use example II.
FIG. 6 is a perspective view showing the vicinity of an air diffusing member in Usage Example II.
FIG. 7 is a perspective view showing a pedestal of the submerged filtration device in the same Usage Example II.
FIG. 8 is a front view showing a usage example III in which the air diffuser is used as a water flow generation power source of the underwater bottom type filtration device.
FIG. 9 is a cross-sectional view showing a part of the underwater bottom type filtration device in Usage Example III.
FIG. 10 is an exploded perspective view showing the vicinity of an air diffusion member according to a second embodiment of the present invention.
11 is a plan view of the air diffusion member of FIG.
12 is a cross-sectional view taken along line XII-XII of FIG. 11 with an air supply pipe attached.
FIG. 13 is a front view showing an air diffusion member according to a third embodiment of the present invention.
14 is a cross-sectional view of the air diffusion member of FIG.
FIG. 15 is an exploded perspective view of the air diffusing member.
FIG. 16 is a perspective view of main parts of the air diffusing member.
FIG. 17 is a cross-sectional view showing a modified example of the submersible filtration device used in Usage Example II of the embodiment.
FIG. 18 is an exploded perspective view of the lower part of the submerged filtration device.
FIG. 19 is an exploded perspective view of the upper part of the underwater charging type filtration apparatus.
FIGS. 20A and 20B show a stand of the same submerged filtration device, where FIG. 20A is a plan view and FIG. 20B is a cross-sectional view.
FIGS. 21A and 21B show a cylindrical body support member of the underwater charging type filtration apparatus, wherein FIG. 21A is a plan view and FIG. 21B is a cross-sectional view.
FIG. 22 shows an air diffusing member according to a fourth embodiment of the present invention, wherein (a) is a front view and (b) is a bottom view.
23 is a cross-sectional view of the air diffusion member of FIG.
FIG. 24 is a perspective view showing the vicinity of an air diffusion member of a conventional aeration apparatus for breeding aquarium.
[Explanation of symbols]
1 Air diffuser for rearing tank
2 Pressurized air supply device
3 Air supply pipe
4 Air diffusion member
5 Round bars
6 groove
7 Air passage
8 spout
9 Through hole
20 Submersible filtration equipment
24 cylinder
28 Elastic short pipe
34 Air passage
35 spout
40 Underwater bottom filter
50 Air diffusion member
51 cup body
52 groove
53 Air Passage
54 Spout
60 Air diffusion member
61 Base end side connector
62 Intermediate connector
63 Tip side connector
65 Stepped wall
66 Thin cylinder
69 groove
70 Thick tube
73 Air bubble guide ridge
74 Thick tube
75 Protrusion
79 Air passage
80 spout
90 Submersible filtration equipment
94 cylinder
120 Air diffusion member
121 Base end side connector
122 intermediate part connection body
123 Tip side connector
125 conical cylinder
128 grooves
129 Conical cylinder
131 Weight
132 Air passage
133 spout

Claims (17)

In the air diffusion member attached to the end of the air supply pipe,
The air diffusion member (50) includes a cup body (51) having an inner peripheral surface that is directly and detachably attached to an outer peripheral surface of one end of the air supply pipe (3), and the cup body (51). And at least two grooves (52) formed on the inner peripheral surface of
An air passageway (53) is formed between each groove (52) and the outer peripheral surface of the air supply pipe (3), and the open end of the air passageway (53) serves as an air outlet (54). An air diffusing member for a breeding aquarium, characterized in that. The air diffusing member for a breeding aquarium according to claim 1, wherein the groove (52) extends to the inner bottom surface of the cup body (51) . In the air diffusion member attached to the end of the air supply pipe,
The air diffusing member (60) (120) includes at least three connecting members (61, 62, 62, 63) (121, 122, including at least two identically connected bodies (62, 62) (122, 123)). 123) are detachably connected to each other, and each connecting body includes cylindrical portions (66, 70, 74) (125, 129),
The cylindrical part of the other coupling body (61, 62) (121, 122) is connected to the inner peripheral surface of the cylindrical part (70, 74) (129) of one coupling body (62, 63) (122, 123) to be coupled. (66) While the outer peripheral surfaces of (125, 129) are fitted together, both the connecting bodies are detachably connected,
The inner peripheral surface of the cylindrical part (70, 74) (129) of one of the connected bodies (62, 63) (122, 123) and the cylindrical part of the other connected body (61, 62) (121, 122). (66) Between at least two grooves (69) (128) provided relatively to the outer peripheral surface of (125, 129) and an opposing surface detachably covering the grooves (69) (128). An air diffusing member for a breeding aquarium characterized by forming air passages (79) and (132), and opening ends of the air passages (79) and (132) as air outlets (80) and (133) . The same-shaped connecting body (62) includes a thick cylindrical portion (70) having a relatively large inner and outer diameter and a narrow cylindrical portion (66) having a relatively small inner and outer diameter via a step wall portion (65), By connecting the outer peripheral surface of the thin cylindrical portion (66) of the other connecting body (62) to the inner peripheral surface of the thick cylindrical portion (70) of one connected body (62), both connecting bodies are connected. The air diffusing member for a breeding aquarium according to claim 3, wherein (62, 62) are detachably connected . The air diffusing member for a breeding aquarium according to claim 4, wherein the inner peripheral surface of the thick tube portion (70) and the outer peripheral surface of the thin tube portion (66) are provided with a gradient . The said groove | channel (69) was provided in the outer peripheral surface of the said thin cylinder part (66), and the outer surface of the step wall part (65), The inner peripheral surface and end surface of the said thick cylinder part (70) were made into the said opposing surface. Item 6. The air diffusing member for a breeding aquarium according to item 4 or 5 . The said groove | channel is provided in the inner peripheral surface and end surface of the said thick cylinder part (70), The outer surface of the said thin cylinder part (66) and the outer surface of the step wall part (65) were made into the said opposing surface. 5. The air diffusing member for a breeding aquarium according to 5 . The connection body (122, 123) having the same shape includes a conical cylinder part (129) having a gradient on the inner and outer peripheral surfaces, and the inner periphery of the conical cylinder part (129) of one of the connection bodies (123) to be connected. The breeding aquarium according to claim 3, wherein both the connecting bodies (122, 123) are detachably connected by fitting the outer peripheral surface of the conical cylinder portion (129) of the other connecting body (122) to the surface . Air diffusion member. The air diffusing member for a breeding aquarium according to claim 8 , wherein the groove (128) is provided on an outer peripheral surface of the conical tube portion (129), and an inner peripheral surface of the conical tube portion (129) is the facing surface . The air diffusing member for a breeding aquarium according to claim 8, wherein the groove is provided on an inner peripheral surface of the conical cylinder portion (129), and an outer peripheral surface of the conical cylinder portion (129) is the facing surface . The air diffusion member for a breeding aquarium according to any one of claims 3 to 10, wherein the spout (80) (133) forms a polygon . An air bubble guide protrusion (73) or an air bubble guide groove (128) extending upward is provided on the outer peripheral surface of the coupling body (62) (122) located immediately above the jet port (80) (133). The air diffusion member for breeding aquarium according to any one of claims 3 to 11 . The air diffusion for breeding aquarium according to any one of claims 3 to 12, wherein at least an outer peripheral surface of the coupling body (61, 62, 62, 63) (121, 122, 123) is formed into a smooth glossy surface. Element. 14. The connection body (61, 62, 62, 63) (121, 122, 123) is entirely or partially formed of a material having a specific gravity of 2 or more . Air diffusion member for breeding aquarium. The whole or a part of the connector (61, 62, 62, 63) (121, 122, 123) has a weight embedded therein. 15. Air diffusion for breeding aquarium according to any one of claims 3 to 14 Element. An aeration apparatus for a breeding aquarium comprising a pressurized air supply device, an air supply pipe for sending air supplied from the pressurized air supply device, and an air diffusion member attached to an end of the air supply pipe A filtration device for a breeding aquarium combined as a power source for generating water flow,
  The air diffusion member (4) includes a rod body (5) that is detachably inserted into the inner circumferential surface of one end of the air supply pipe (3), and at least two formed on the outer circumferential surface of the rod body (5). A groove (6) and a through hole (9) formed at the center of the rod (5), and air is provided between each groove (6) and the inner peripheral surface of the air supply pipe (3). A passage (7) is formed, and the open end of the air passage (7) is an air outlet (8);
  An air diffusing member protruding from one end of the air supply pipe (3) into the blind hole (29) of the base (22) provided at the bottom center of the container (21) of the submersible filtration device (20) The tip of (4) is inserted and fixed via the elastic short pipe (28), and a gap (33) is provided between the lower end surface of the air diffusion member (4) and the inner bottom surface of the blind hole portion (29), An air passage (34) is formed between the tip of the air diffusing member (4) and the elastic short pipe (28), and the open end of the air passage (34) is also connected to the air jet (35). A filtration device for a breeding aquarium, characterized by: An aeration apparatus for a breeding aquarium comprising a pressurized air supply device, an air supply pipe for sending air supplied from the pressurized air supply device, and an air diffusion member attached to an end of the air supply pipe A filtration device for a breeding aquarium combined as a power source for generating water flow,
  The air diffusion member (50) is formed by detachably connecting at least three connecting members (61, 62, 62, 63) including at least two connecting members (62, 62) having the same shape. It has a cylindrical part (66, 70, 74),
  By fitting the outer peripheral surface of the cylindrical portion (66) of the other connecting body (61, 62) to the inner peripheral surface of the cylindrical portion (70, 74) of one connected body (62, 63) to be connected. Both connectors are detachably connected,
  It is provided relatively to the inner peripheral surface of the cylindrical portion (70, 74) of one connected body (62, 63) and the outer peripheral surface of the cylindrical portion (66) of the other connected body (62, 62). An air passageway (79) is formed between the at least two grooves (69) and the opposing surface that is detachably covered with the groove (69), and an air jet is formed at the open end of the air passageway (79). Exit (80)
  The air diffusion member (60) is inserted into a cylindrical body (94) mounted via a stand (92) on the bottom center of the container (91) of the submersible filtration device (90), and the connection The tips of at least two protrusions (75) provided on the outer peripheral surface of the member (63) are brought into contact with the inner peripheral surface of the cylindrical body (94), and the air diffusion member (60) is placed in the center of the cylindrical body (94). A rearing water tank filtration device characterized by being supported by.

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