JPH037406B2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (1) Industrial Application Field The present invention provides a filter case that extends vertically and is installed in an aquarium, and a suction passage formed in the filter case that communicates with the filter case. a drain pipe detachably attached to the upper end of the filtration case, an air injection member disposed at the lower part of the suction passage to generate an upward water flow in the suction passage, a pressurized air supply source and an air injection The present invention relates to a filtration device including a hose that passes through the drain pipe to connect members.

(2) Conventional technology Conventionally, such a device has been developed, for example, in
It is publicly known from Publication No. 191010 and the like.

(3) Problems to be Solved by the Invention However, in the above-mentioned conventional method, the drain pipe is removably attached to the filter case so as to face in a certain direction. However, there are cases where it is desired to freely select the direction of the drain pipe depending on the mounting position of the filter case in the water tank, and the above-mentioned conventional device cannot meet such a request. Moreover, although it is desirable that the drain pipe for eliminating clogging of the air injection member can be easily removed from the filter case, it is undesirable for the drain pipe to be pulled out from the filter case when the removal operation is not performed.

The present invention has been made in view of the above circumstances, and makes it possible to easily change the direction of the drain pipe, and also makes it easy to remove and install the drain pipe from the filter case. It is an object of the present invention to provide a filtration device that can perform the following steps.

B. Structure of the Invention (1) Means for Solving the Problems According to the present invention, the drain pipe is connected at right angles to a first pipe portion having a drain port at its tip and a rear end of the first pipe portion. The top plate, which is formed into an approximately L-shape with the second pipe part and which closes the upper end of the filtration case, has a pair of regulating surfaces that intersect in a horizontal plane and is open to the inside and above of the aquarium. A sector-shaped recess is provided at a position corresponding to the main part of the sector, and the sector-shaped recess corresponds to the upper end opening of a suction pipe that extends vertically to form a suction passage and is fixedly disposed within the filter case. An insertion hole is bored, and the second pipe part of the drain pipe is fitted from the insertion hole into the upper end opening of the suction pipe to enable rotation of the first pipe part within the fan-shaped recess; An engagement protrusion that engages with the upper end of the second pipe section of the drain pipe is provided at the upper end position of the intersection of the two regulation surfaces, and the engagement protrusion is such that the first pipe section is connected to either of the regulation surfaces. The drain pipe is formed in an arc shape so as to release the engagement state with the upper end of the second pipe part when the first pipe part is rotated in a direction away from the regulating surface. be done.

(2) Effect According to the above configuration, the drain pipe can rotate in the fan-shaped recess within the range in which the first pipe part touches both the regulating surfaces, and the direction of the drain port can be freely adjusted within the range of the angle formed by the regulating surfaces. Can be adjusted. Moreover, in the normal installation state, the engaging protrusion engages with the upper end of the second pipe part, so the drain pipe does not come out upward from the filter case, but the first pipe part When the drain pipe is rotated until it comes into contact with the surface, by rotating the drain pipe in a direction in which the first pipe section moves away from the regulating surface, the engagement protrusion and the upper end of the second pipe section are connected. The drain pipe can be pulled out from the filtration case by releasing the engaged state of can be easily installed.

(3) Embodiment An embodiment of the present invention will be described below with reference to drawings. In FIG. 1, an aquarium 1 for breeding ornamental fish such as goldfish, tropical fish, and saltwater fish is formed in a box shape. , mutually orthogonal 2 of this tank 1
Corner portion 2 composed of two wall surfaces 1a and 1b
A filter case 3 is attached to the filter case 3. This case 3
The water in the water tank 1 is sucked into the tank 1, and the water purified in the filter case 3 flows back into the water tank 1.

Referring also to FIGS. 2 to 7, the filter case 3 is made of, for example, synthetic resin and basically has a cylindrical shape, and its cross-sectional shape is such that it faces toward the corner 2. A back wall 6 arranged and a front wall 7 arranged facing the inner side of the water tank 1 form a closed cross section and are connected to each other.

The back wall 6 connects the pair of mounting parts 8 and 9 with a connecting part 10.
The two mounting parts 8 and 9 are arranged so that the angle α between them is slightly larger than the angle formed by the walls 1a and 1b of the aquarium 1, that is, 90 degrees, and the connection part 10 is It is formed in an arc shape convexly curved toward the wall 7 side. On the other hand, the front wall 7 is formed into a trapezoid shape that narrows toward the inside of the aquarium 1, and both ends of the front wall 7 and the outer ends of the mounting parts 8 and 9 on the back wall 6 are mutually connected. Polymerized and connected.

A top plate 11 that closes the top end of the filter case 3 when connected to the back wall 6 is integrally provided at the upper end of the front wall 7, and approximately in the center of this top plate 11,
A drain pipe 12 whose inner end slightly protrudes into the filter case 3, extends upward, and is bent inward of the water tank 1 is attached to form a drain port 13. Furthermore, plate portions are provided at the lower ends of the front wall 7 and the lower ends of the back wall 6 to form a bottom plate 14 that closes the bottom end of the filtration case 3 when connected to each other, and approximately at the center of the bottom plate 14. A through hole 15 is bored.

Particularly paying attention to FIG. 2A, the top plate 11 is provided with a fan-shaped recess 45 that opens inward and upward of the water tank 1. This fan-shaped recess 45 has vertical first and second regulating surfaces 45a and 45b that are substantially orthogonal in the horizontal plane and face the inner side of the aquarium 1, and first and second regulating surfaces that are arcuate in the horizontal plane. 45a, 45b
a first circular arc surface 45c connecting the first and second
a support surface 45d facing upward and formed in a horizontal fan shape corresponding to the angle formed by the regulation surfaces 45a and 45b;
The first restriction surface 45a, the second restriction surface 45b, the first
It consists of a second circular arc surface 45e formed in an arc shape in a vertical plane to connect the circular arc surface 45c and the support surface 45d.

The drain pipe 12 includes a first pipe portion 12a having a drain port 13 at its tip and supported by a support surface 45d, and a suction pipe fixed and arranged inside the filter case 3 to form a suction passage 16a extending vertically. The second pipe part 12b is connected at right angles to the rear end of the first pipe part 12a to fit into the upper end opening of the riser pipe 16, and is formed into a substantially L-shape made of flexible synthetic resin. . Moreover, an insertion hole 46 corresponding to the upper end opening of the suction pipe 16 is bored in the sector-shaped recess 45 at a position corresponding to the main part of the sector. That is, an insertion hole 46 corresponding to the upper end opening of the suction pipe 16 is bored in the support surface 45d and the second arcuate surface 45e of the fan-shaped recess 45 to insert the second pipe portion 12b, and An arcuate engagement protrusion 47 that slightly protrudes inward of the water tank 1 is provided at the upper end to engage with the arcuate engagement step 12c provided at the upper end of the second pipe portion 12b. .

A suction pipe 16 extending vertically is fixed and arranged approximately in the center of the filter case 3. That is, the filter case 3 is provided at the upper end and lower end of the suction pipe 16.
Support plates 17, 18 having a shape corresponding to the cross-sectional shape of
are integrally attached, and a support flange 19 for supporting a support plate 18 is provided on the lower inner surface of the back wall 6 and front wall 7.
are provided in a protruding manner, and the suction pipe 16 is installed in the filter case 3 by supporting the support plate 18 with the support collar 19 with the upper support plate 17 in contact with the top plate 11. Moreover, the upper end opening of the suction pipe 16 is arranged close to the lower side of the support surface 45d so that a part of its inner peripheral surface overlaps with the first circular arc surface 45c, and the upper end of the suction pipe 16 has a drain pipe. The second pipe portion 12b at 12 is fitted, and the suction pipe 16 communicates with the drain port 13.

With the suction pipe 16 attached, filter case 3
A filtration chamber 20 is defined between both support plates 17 and 18 inside, and this filtration chamber 20 is separated by a filtration material 21 attached to the suction pipe 16 into an unpurified chamber 22 on the outside,
It is divided into a purification chamber 23 on the inner side.

A pair of support arms 24 and 25 that protrude toward the connecting portion of the back wall 6 and front wall 7 are provided at a plurality of locations, for example seven locations, spaced apart in the axial direction of the suction pipe 16, and the back wall A support arm 26 is provided to protrude toward the connecting portion 10 side of 6. A small diameter shaft portion 27 extending parallel to the suction pipe 16 is integrally provided at the tip of both the support arms 24 and 25.
6 is integrally provided with a locking portion 28 that is curved to correspond to the connecting portion 10 in the back wall 6 and slightly extends from both ends thereof in parallel with both the mounting portions 8 and 9. The locking portion 28 is brought into contact with the inner surfaces of the connecting portion 10 and the double-sided portions 8 and 9.

The filtering material 21 is formed in a rectangular pine shape, and the supporting arms 24 and 2 of the suction pipe 16 are held in contact with the supporting plates 17 and 18 at both ends in the longitudinal direction.
It is wrapped around 5,26. That is, both ends of the filter medium 21 in the width direction are engaged with the locking portions 28 at the ends of the support arms 26 by bending them at the small diameter shaft portions 27 at the ends of the support arms 24 and 25.

Suction pipe 1 with filter material 21 attached in this way
6 into the filtration case 3, the inside of the filtration chamber 20 is divided into an unpurified chamber 22 and a purification chamber 23 over the entire length in the longitudinal direction, and the suction pipe 16 is arranged in the purification chamber 23. It turns out. Moreover, a suction port 29 communicating with the lower part of the purification chamber 23 is provided at the lower part of the suction pipe 16. Further, in the lower part of the front wall 7 of the filtration case 3, a plurality of water intake ports 30 spaced apart in the vertical direction are bored in the shape of slits so as to communicate with the lower part of the unpurified chamber 22.

A water intake chamber 31 is defined between the bottom plate 14 of the filtration case 3 and the support plate 18 of the suction pipe 16, and a slit extending in the vertical direction is provided at the bottom of the surface wall 7 to communicate with the water intake chamber 31. A plurality of auxiliary water intakes 32 shaped like
will be provided.

The water intake chamber 31 and the auxiliary water intake 32 are
The through hole 15 guides a small amount of water that has bypassed the cap 33 to the suction pipe 16.
It is blocked by However, it is also possible to share the suction pipe 16 with, for example, a bottom type filtration device, and in that case, a connecting pipe connected to the bottom type filtration device is inserted into the suction pipe 16 through the through hole 15.

On the other hand, a pair of recesses 34 are provided on the outer surfaces of both the mounting portions 8 and 9 on the back wall 6, spaced apart from each other vertically. Suction cups 35 are fixed to these recesses 34 so that their tips project outward beyond the outer surfaces of the attachment parts 8 and 9, respectively.

In order to suck up water from the purification chamber 23 to the water intake port 13, a suction means 38 is attached to the filter case 3, and this suction means 38 is connected to the suction pipe 1.
6, an air injection member 39 disposed at the lower part of the suction pipe 16, an air pump as a pressurized air supply source 40, and a hose 41 connecting the air injection member 39 and the pressurized air supply source 40. .

The air injection member 39 is formed into a cylindrical shape from a breathable material such as a foamable synthetic resin, and a connecting pipe portion 42 is integrally provided on the air injection member 39 . One end of a hose 41 is connected to the connecting pipe portion 42, and the hose 41 is connected to the suction pipe 16.
The hose 41 extends upward and is pulled out of the water tank 1 through a take-out hole 43 provided at the top of the drain pipe 12, and the other end of the hose 41 is connected to a pressurized air supply source 40 disposed outside the water tank 1.

In such a suction means 38, the pressurized air supply source 4
By supplying pressurized air from 0, the air ejected from the air injection member 39 becomes fine bubbles and rises inside the suction pipe 16 and the drain pipe 12, thereby causing the inside of the suction pipe 16 and the drain pipe 12 to rise. A rising water flow occurs.

Next, to explain the operation of this embodiment, when attaching the filter case 3 to the aquarium 1, the back wall 6 is attached to the corner portion 2 so that the drain port 13 corresponds to the water surface in the aquarium 1. Let me come. In this state, first, as shown in FIG. 8a, one mounting portion 8 of the back wall 6 is pressed in the direction of arrow Pa toward one wall portion 1a, so that the suction cup 35 is attracted to the wall surface 1a. Next, as shown in FIG. 8b, the other mounting portion 9 is pressed toward the other wall portion 1b in the direction of arrow Pb so that the suction cup 35 is attracted to the wall surface 1b. At this time, since the angle α formed by both mounting parts 8 and 9 is larger than the angle formed by both wall surfaces 1a and 1b, one mounting part 8 is connected with its end on the front wall 7 side pressed against wall surface 1a. The part 10 side is separated from the wall surface 1a,
The suction cup 35 of the attachment part 8 and the sealed space of the wall surface 1a are depressurized. Therefore, the adhesion force of the suction cup 35 is increased, and the attachment portion 8 is reliably attached to the wall surface 1a.

When the pressing state of the mounting part 9 is released, the mounting part 9
As shown in FIG. 4, the suction cup 35 on the mounting part 8 side
Due to the adsorption force on the wall surface 1a, the end portion on the front wall 7 side is brought into contact with the wall surface 1b, and the connecting portion 10 side is separated from the wall surface 1b. As a result, the pressure in the sealed space between the suction cup 35 and the wall surface 1b is reduced in the same manner as described above, the suction force of the suction cup 35 is increased, and the attachment portion 9 is reliably attached to the wall surface 1b. Moreover, in this installed state, if the water tank 1 is covered with gravel 4, the water intake port 30 is positioned above the gravel 4.

In this state, the ends of the mounting parts 8 and 9 on the back wall 6 on the front wall 7 side are connected to both wall surfaces 1a and 9 of the water tank 1, respectively.
1b, the space between the filter case 3 and the corner 2 is closed. Therefore, ornamental fish are surely prevented from getting stuck between the filter case 3 and the aquarium 1 and becoming stuck.

After this installation is completed, when the pressurized air supply 40 is activated, an upward flow of water is created in the suction pipe 16. As a result, inside the filter case 3,
The water sucked into the unpurified chamber 22 from the water intake port 30 flows through the filtering material 21 and is purified until it reaches the purification chamber 23.
further flows into the suction pipe 1 from the suction port 29.
6 and returns to the water tank 1 through the drain port 13. At this time, since the suction port 29 is provided at the bottom of the suction pipe 16, the entire water pressure from the water surface to the suction port 29 is applied to the suction port 29.
Water can be efficiently sucked up and the unpurified room 22
The water flowing into the purification chamber 23 flows over the entire surface of the filter material 21 and is efficiently purified.

On the other hand, as the rising water flow is generated in the suction pipe 16, the water that has flowed into the water intake chamber 31 from the auxiliary water intake port 32 is also sucked up by the suction pipe 16. Therefore,
The water rising inside the suction pipe 16 consists of water that has been purified by flowing through the filter medium 21 from the water intake port 30 and water that is sucked in from the auxiliary water intake port 32 through the water intake chamber 31. Water flowing in from the water tank 1 flows through the filter medium 21 at an appropriate speed to be purified, and then flows back into the water tank 1 through the drain port 13. In other words, by providing the auxiliary water intake 32, the speed of water flowing through the filter medium 21 is adjusted to an appropriate value to promote the reproduction of chlorella and aerobic microorganisms, and these aerobic microorganisms remove the remaining food for ornamental fish. It is possible to decompose organic matter such as feces and feces to prevent clogging of the filter medium 21, and to provide chlorella and the like as live food for ornamental fish.

Of course, if it is possible to allow the speed of water flowing through the filter medium 21 to increase somewhat, it is also possible to close the auxiliary water intake port 32.

Furthermore, the drain pipe 12 is capable of rotating on the support surface 45d using the second pipe portion 12b fitted to the suction pipe 16 as a fulcrum within the range where it comes into contact with both the regulating surfaces 45a and 45b. The direction of the mouth 13 can be freely adjusted within the above range.

Moreover, in the normal installation state, the engagement protrusion 47 engages with the engagement step 12c at the upper end of the second pipe section 12b, so the drain pipe 12 does not come out upward from the filter case 3; As shown in Figure 9, the first
When the drain pipe 12 is rotated until the pipe portion 12a contacts the second restriction surface 45b or the first restriction surface 45a, the direction in which the first pipe portion 12a is moved away from the second restriction surface 45b or the first restriction surface 45a By rotating the drain pipe 12 and the engaging protrusion 4
7 while bending the second pipe portion 12b.
The engagement state between the second pipe part 12b and the engagement protrusion 47 can be released, and the fitted state between the second pipe part 12b and the suction pipe 16 can be released, and the second pipe part 12b can be inserted into the second pipe part 12b within the insertion hole 46. The second regulating surface 45b allows the filter to be pulled out from the filter case 3 while being inserted into the first regulating surface 45a. Furthermore, when attaching the drain pipe 12 to the filter case 3, the drain pipe 12 can be attached to the filter case 3 by operating the drain pipe 12 in the reverse order to the above-described removal procedure. Therefore, the drain pipe 12 can be easily attached to or detached from the filter case 3 only when the attachment or detachment operation is performed, and maintenance becomes easy.

C. Effects of the Invention As described above, according to the present invention, the drain pipe consists of a first pipe section having a drain port at its tip and a second pipe section connected at right angles to the rear end of the first pipe section. The top plate, which is formed in an L shape and closes the upper end of the filtration case, is provided with a fan-shaped recess that has a pair of regulating surfaces that intersect in a horizontal plane and that opens inward and upward of the water tank.
An insertion hole is bored in the sector-shaped recess at a position corresponding to the main part of the sector, and corresponds to the upper end opening of the suction pipe that extends vertically and is fixedly disposed within the filter case to form a suction passage. , the second pipe part of the drain pipe is fitted into the upper end opening of the suction pipe through the insertion hole in order to enable rotation of the first pipe part within the fan-shaped recess, and the second pipe part of the drain pipe is fitted into the upper end opening of the suction pipe through the insertion hole, and the second pipe part of the drain pipe is fitted into the upper end opening of the suction pipe through the insertion hole, and At the upper end position, there is a second drain pipe.
An engagement protrusion is provided protruding from the upper end of the tube, and the engagement protrusion is
As the first pipe section rotates the drain pipe at a position where it is in contact with one of the regulating surfaces in the direction away from the regulating surface, the upper end of the second pipe section is rotated. Since it is formed in an arc shape to release the engaged state, normally the engaging protrusion is engaged with the upper end of the second pipe part to enable rotational movement within the fan-shaped recess of the drain pipe, and the drain opening is closed. The direction of the first tube part can be freely adjusted within the range where the first tube part comes into contact with both regulating surfaces. Moreover, when the first pipe part is brought into contact with either one of the regulating surfaces, the first pipe part is rotated in a direction away from the regulating surface, and the engagement protrusion and the upper end of the second pipe part are engaged with each other. The drain pipe can be easily removed from the filtration case by releasing the fitted state with the suction pipe, and the drain pipe can be easily attached to the filtration case by reversing the procedure. Can be done. Therefore, the drain pipe can be attached and detached only when performing an attachment or detachment operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the entirety, and FIG. 2 is a perspective view of FIG.
Fig. 2A is an enlarged exploded perspective view showing how the drain pipe is attached to the filter case, Fig. 3 is a cross-sectional view taken along - line in Fig. 2, and Fig. 4 is a - line in Fig. 3. 5 is an enlarged sectional view taken along the - line in FIG. 3, FIG. 6 is an enlarged sectional view taken along the - line in FIG. 4, and FIG. 7 is an enlarged exploded perspective view of the suction pipe and filter material.
FIG. 8 is a cross-sectional view corresponding to FIG. 4 for explaining the procedure for attaching the filter case, and FIG. 9 is a cross-sectional view for explaining the procedure for removing the drain pipe from the filter case. 1... Water tank, 3... Filter case, 11... Top plate, 12... Drain pipe, 12a... First pipe section, 12
b... Second pipe section, 13... Drain port, 16... Suction pipe, 16a... Suction chamber, 39... Air injection member, 40... Pressurized air supply source, 41... Hose,
45...Sector-shaped recess, 45a, 45b...Restriction surface,
46...Insertion hole, 47...Engagement protrusion.

Claims (1)

[Claims] 1. A filtration case that extends vertically and is installed in the aquarium, a drain pipe that communicates with the suction passage formed in the filtration case and is removably attached to the upper end of the filtration case, and a drain pipe that extends up and down into the suction passage. In a filtration device comprising an air injection member disposed at a lower part of the suction passage to generate a water flow, and a hose passing through the drain pipe to connect the pressurized air supply source and the air injection member, the drain pipe is , a top plate that is formed into a substantially L-shape by a first pipe section having a drain port at its tip and a second pipe section connected at right angles to the rear end of the first pipe section, and that closes the upper end of the filtration case; is provided with a fan-shaped recess that has a pair of regulating surfaces that intersect in the horizontal plane and is open to the inside and above of the aquarium, and a suction passage is provided in the fan-shaped recess at a position corresponding to the main part of the sector. An insertion hole corresponding to the upper end opening of the suction pipe which extends vertically and is fixedly disposed within the filter case is bored to form a filtration case, and allows rotation of the first pipe part within the sector-shaped recess. The second pipe part of the drain pipe is fitted into the upper end opening of the suction pipe from the insertion hole, and the upper end position of the intersection of both the regulating surfaces is provided with a fitting that engages with the upper end of the second pipe part of the drain pipe. A mating protrusion is provided in a protruding manner, and the engaging protrusion is provided with a first
Engagement with the upper end of the second pipe section in response to rotation of the first pipe part in a direction away from the regulation surface of the drain pipe in a position where the pipe part is in contact with one of the regulating surfaces. A filtration device characterized in that it is formed in an arc shape to release the condition.