JP2017074001A - Water fall model for water tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water fall model for water tank having novel and visionary water fall scenery.SOLUTION: A water fall model for water tank includes: a lower side rock wall arrangement object 1 arranged in a water tank; a lower water fall flow path 18 arranged on a surface of the lower side rock wall arrangement object 1; a lower water fall circulation pump P1 lifting a large number of flowing particles 6 flown down along the lower water fall flow path 18 to an upper edge of the lower water fall flow path 18; an upper side rock wall arrangement object 2 arranged above the lower side rock wall arrangement object 1; an upper water fall flow path 28 arranged on a surface of the upper side rock wall arrangement object; and an upper water fall circulation pump P2 causing water W in a water tank A to be lifted to an upper edge of the upper water fall flow path 28 and causing the water W to flow down along the upper water fall flow path 28. A throw-down position of the water W thrown to a water surface from the upper water fall flow path 28 is arranged so as to correspond to the upper edge of the lower water fall flow path 18.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an aquarium waterfall model used as an exhibit, an aquarium object, an aquarium ornament, etc. in various exhibition venues, aquarium dealers, general households, and the like.

  An image of a waterfall below the surface (underwater) in an aquarium as an exhibit, an aquarium object, or an aquarium decoration at an exhibition hall such as an aquarium fish tank, an aquarium-related store in a large commercial facility such as a shopping center, or a general household The model (waterfall model) made in this way is well known.

  For example, a waterfall model for an aquarium shown in Patent Document 1 below includes a rock-walled figurine that is installed in water in the aquarium. This rock-walled figurine has a front wall and a rear wall, and an internal channel extending in the vertical direction is formed between the front and rear walls. In addition, a waterfall channel is formed from the top to the bottom of the front of the rock wall figurine. The upper end of the internal channel is opened at the upper end of the waterfall channel, and the waterfall at the lower end of the waterfall channel is the internal flow. It communicates with the lower end of the road. One end of an air introduction hose (air introduction tube) is inserted and arranged in the lower part of the internal flow path, and the other end of the air introduction hose is connected to an air pump outside the water tank. In addition, a lot of sand (fluidized sand) used as waterfall water is accommodated in the waterhole of the rock wall figurine.

  When air is introduced into the lower part of the internal flow path by driving the air pump, an upward flow is generated in the internal flow path due to the air lift effect, and the fluid sand in the basin is sucked into the internal flow path by the upward flow. Along with the upward flow, the fluid sand rises up the internal channel and flows out into the waterfall channel, and the fluid sand flows down the waterfall channel and falls into the waterhole. In this way, by causing the flowing sand to continuously flow down like a waterfall along the waterfall channel, a dynamic waterfall model reminiscent of a real waterfall can be produced, and a good visitor effect and the like can be obtained.

JP-A-10-75684

  In the conventional aquarium waterfall model as shown in Patent Document 1 above, a dynamic waterfall landscape is formed in the water, so that a fantastic situation can be created to some extent, the commercial value can be improved, and the effect of attracting customers, etc. You can expect.

  However, in the technical field related to aquariums, in order to improve product value, it is always required to create novel and more fantastic situations, and the development of such technology is eagerly desired. It is.

  This invention is made | formed in view of said subject, and it aims at providing the waterfall model for aquariums which has a novel and fantastic waterfall scenery.

  In order to achieve the above object, the present invention has the following structure.

[1] A lower rock wall-shaped installation that is installed in an aquarium and has a rock-like surface;
A lower waterfall channel provided from the upper side to the lower side along the surface of the lower rock wall-shaped installation, and disposed below the water surface,
The upper end side opens to the upper end of the lower waterfall channel, and the lower end side communicates with the lower end of the lower waterfall channel;
A lower waterfall circulation pump that generates an upward flow in the upstream pipe and raises a large number of fluid particles flowing down along the lower waterfall channel to the upper end of the lower waterfall channel through the upstream channel;
An upper rock wall installation that is provided on the lower rock wall installation and has a rocky surface;
A waterfall channel provided from the upper side to the lower side along the surface of the upper rock wall-shaped installation, and disposed on the water surface,
An upper waterfall circulation pump that pumps the water in the aquarium to the upper end of the upper waterfall channel, causes the water to flow down along the upper waterfall channel, and drops it on the water surface in the aquarium,
A water tank model for water tanks, wherein a water dropping position to be dropped onto the water surface from the upper waterfall channel is arranged corresponding to an upper end of the lower waterfall channel.

[2] A basin is provided corresponding to the lower end of the lower waterfall channel, and the lower end side of the upward duct is communicated with a waterfall bottom wall provided on the bottom wall of the waterhole.
One end side of the water supply pipe line is disposed on the lower end side of the upstream pipe line, and a discharge port of the submersible pump as the lower waterfall circulation pump is connected to the other end side of the water supply pipe line,
The tip of the discharge nozzle provided on one end side of the drainage pipe is disposed corresponding to the lower side of the waterhole bottom hole,
The water flow discharged from the lower waterfall circulation pump through the water supply pipe and the discharge nozzle into the upstream pipe generates an upward flow in the upstream pipe and flows along the upstream pipe. The water tank waterfall model according to item 1, wherein the particles are raised.

[3] While configured to pump the water in the water tank to the upper end of the upper waterfall channel through the upper waterfall circulation pump,
3. The water tank waterfall model according to item 1 or 2, wherein a filter for filtering water in the pipe is installed in the middle of the pumping pipe.

  In the present invention, the following configurations can also be employed.

[4] The axial center of the discharge nozzle is disposed in a state substantially orthogonal to the axial center of the waterhole bottom hole,
When the discharge direction of water discharged from the discharge nozzle is the downstream side, and the opposite direction is the upstream side,
The water tank model for an aquarium according to the preceding item 1, wherein a tip position of the discharge nozzle is disposed between an upstream end position and a downstream end position of the waterhole bottom hole.

  [5] The water tank according to item 2 or 4, wherein the waterfall channel is configured by a groove formed on a surface of the rock wall-shaped installation, and the flowing particles flow along the groove. Waterfall model.

  [6] The water tank according to the above item 2, 4 or 5, wherein a rock bump is formed in the waterfall channel so as to protrude to the surface side, and fluid particles are temporarily retained by the rock bump. Waterfall model.

  [7] The aquarium waterfall model according to any one of items 2 and 4 to 6, wherein a hollow portion is provided inside the rock wall-shaped installation, and the upstream pipe is disposed in the hollow portion.

  According to the water tank model for the aquarium of the invention [1], the upper waterfall in which water flows down the rock surface of the upper rock wall-shaped installation and the lower waterfall in which fluid particles flow down the rock surface of the lower rock wall installation are Since it is formed like a series of waterfalls that run from the water to the water, it is possible to obtain a novel and fantastic waterfall landscape, and to greatly improve the product value and the effect of customers.

  According to the water tank model for the aquarium of the invention [2], the flowing particles are caused to flow along the upstream line by the water force discharged from the submersible pump into the upstream line through the discharge nozzle in the lower rock wall installation. Since it is raised and pushed up to the upper end of the lower waterfall channel, the pushing force can be increased compared to the case of using an air pump or the like. For this reason, even if fluid particles with a high specific gravity are used, the fluid particles can be reliably circulated between the upstream pipe and the lower waterfall channel, and a sufficient amount of fluid particles can be continuously dropped without interruption. It can be made to flow down along the flow path, and an attractive waterfall landscape can be surely obtained. Furthermore, the use of fluid particles having a high specific gravity can prevent scattering of fluid particles and can reliably prevent contamination in the water tank.

  According to the water tank model for the aquarium of the invention [3], the water in the aquarium can be filtered, so that it can be applied to an aquarium for breeding tropical fish or aquatic plants.

FIG. 1 is a schematic sectional view showing a water tank in which a waterfall model according to an embodiment of the present invention is installed. FIG. 2 is an enlarged schematic cross-sectional view showing the vicinity of the waterhole in the waterfall model of the embodiment.

  FIG. 1 is a schematic sectional view showing a water tank in which a waterfall model according to an embodiment of the present invention is installed. As shown in the figure, the aquarium waterfall model of the present embodiment includes a large rock wall-shaped installation that is installed in the aquarium A and is arranged so that the upper part projects upward from the water surface of the aquarium A. ing. In this embodiment, this large rock wall installation is composed of a lower rock wall installation (lower simulated rock wall) 1 and an upper rock wall installation (upper simulated rock wall) 2. ing. In the following description, in order to facilitate understanding of the invention, the right side is referred to as “front side” or “front side” and the left side is referred to as “rear side” or “rear side” in order to facilitate understanding of the invention.

  The lower rock wall-shaped installation 1 is made of, for example, a resin molded product such as fiber reinforced plastic (FRP), and has a hollow portion 10 formed therein. The lower rock wall-like installation 1 is placed in the water of the water tank A so that the lower surface is placed on the bottom surface of the water tank A and the whole is located below the water level line (water surface) WL. The surface of the lower rock wall installation 1 is formed in a shape reminiscent of a steep cliff. Furthermore, the back surface (back surface) of the lower rock wall installation 1 is formed in a substantially vertical surface, and this back surface is disposed along the inner wall surface of the water tank A. Moreover, the upper end surface of the lower rock wall installation object 1 is formed in the flat surface, The upper rock wall installation object 2 can be attached to the upper end surface in the stable state.

  Similar to the lower rock wall installation, the upper rock wall installation 2 is constituted by a resin molded product such as fiber reinforced plastic (FRP). The upper rock wall installation 2 is fixed in a state of being placed on the upper end surface of the lower rock wall installation 1. The upper rock wall-like installation 2 is arranged on the water surface such that only a part of the lower end thereof is arranged in water and the remaining main part is located above the water level line WL. The surface of the upper rock wall installation 2 is formed in a shape reminiscent of a steep precipitous rock surface, and is continuous by the combination of the upper rock wall installation 2 and the lower rock wall installation 1. It has a shape reminiscent of two cliffs. Moreover, the back surface (back surface) of the upper rock wall installation 2 is formed in a substantially vertical surface, and this back surface is disposed along the inner wall surface of the water tank A.

  A flat ground portion 11 is formed at the lower end on the surface side of the lower rock wall installation 1 so as to project forward, and the flat ground portion 11 has a substantially inverted cone whose upper end opens on the upper surface of the flat ground portion 11. A waterfall 12 having a shape (substantially mortar shape) is formed. In the bottom wall of the waterfall 12, a waterhole bottom hole 13 communicating with the hollow portion 10 of the lower rock wall installation 1 is formed. Further, a sand pool recess 14 is formed at the upper end on the surface side of the lower rock wall-shaped installation 1, and the upper side of the sand pool recess 14 is opened slightly forward and obliquely upward by the outflow port 15. A sand reservoir recess bottom hole 16 communicating with the hollow portion 10 of the lower rock wall installation 1 is formed at the bottom of the sand reservoir recess 14.

  Further, the flat ground portion 11 is formed with a communication hole 17 having a front end opened to the front surface of the flat ground portion 11 and a rear end communicating with the hollow portion 10 of the lower rock wall installation 1.

  A lower waterfall channel 18 is formed on the rock-like surface of the lower rock wall installation 1 so as to incline and incline with a steep slope along the surface. In the present embodiment, the lower waterfall channel 18 is configured by a groove formed on the surface of the lower rock wall-shaped installation 1, and the cross-sectional shape is a U-shape to a U-shape. As a result, the fluidized sand 6 flows down almost exactly along the groove as the lower waterfall channel 18.

  The lower waterfall channel 18 is disposed at the upper end corresponding to the sand outlet 18 of the recess 14. That is, the part corresponding to the lower waterfall channel 18 of the outlet 15 is formed low, and the fluid sand 6 flowing out from the outlet 15 surely flows into the lower waterfall channel 18. Further, the lower end of the lower waterfall channel 18 is disposed corresponding to the upper end opening of the waterhole 12 so that the fluid sand 6 surely flows into the waterhole 12 from the lower waterfall channel 18.

  In addition, a rock bump 19 is formed in the middle of the lower waterfall channel 18 so as to protrude forward along a substantially horizontal direction. As will be described later, the fluid sand (fluid particles) 6 is temporarily transferred by the rock bump 19. It is made to stay in.

  In addition, although illustration is abbreviate | omitted, in the state seen from the front (the state seen from the right side of FIG. 1), the lower waterfall flow path 18 branches into a plurality of waterfall flow paths, or a plurality of lower waterfall flow paths are formed in the middle. Or is formed so as to have a width change by expanding or narrowing in the left-right direction, and the downstream end of each branched waterfall channel 18 finally branched into the waterfall 12 Correspondingly arranged. For example, the lower waterfall channel 18 is formed to branch to the left and right sides of the rock bump 19 with the rock bump 19 as a branch point.

  FIG. 2 is an enlarged schematic cross-sectional view showing the vicinity of a waterhole in the lower rock wall installation 1 according to the embodiment. As shown in FIGS. 1 and 2, a joint pipe (cheese) 30 is provided in the flat ground portion 11 of the lower rock wall installation 1. That is, the joint pipe 30 has a T-shape (inverted T-shape) in which the branch pipe 32 is attached to the peripheral wall of the main pipe 31 arranged horizontally so as to extend vertically upward with respect to the main pipe 31. . In a state where one end side (rear end side) of the main pipe 31 of the joint pipe 30 faces the hollow portion 10 of the lower rock wall installation object 1, the other end side (front end side) of the main pipe 31 is The branch pipe 32 is fitted and fixed to the waterhole bottom hole 13 while being fixed to the communication hole 17 of the flat ground portion 11 of the lower rock wall-shaped installation 1.

  A discharge nozzle 4 is attached in the joint pipe 30. The discharge nozzle 4 is fixed in a state in which the base end side is fitted into the other end side (front end side) of the main pipe 31 of the joint pipe 30, and the tip end is disposed rearward (leftward in FIG. 2). . The front end side of the discharge nozzle 4 is formed in a taper shape (throttle shape) so that the inner diameter dimension gradually decreases toward the front end side (left side in FIG. 2).

  In the present embodiment, the tip position of the discharge nozzle 4 is arranged corresponding to the lower side of the waterhole bottom hole 13. The positional relationship between the discharge nozzle 4 and the waterfall bottom hole 13 will be described in detail later.

  As shown in FIG. 1, one end side (lower end side) of a connection hose (connection tube) 35 made of silicon hose disposed in the hollow portion 10 of the lower rock wall installation 1 is the joint pipe 30 on the side of the basin 12. While being connected to the other end side (rear end side) of the main pipe 31, the other end side (upper end side) of the connection hose 35 is connected to the bottom hole 16 of the sand pool recess 14 via a joint pipe or the like.

  Here, in the present embodiment, the connecting hose 35, one end side (rear end side) of the main pipe 31 of the joint pipe 30, the sand pool recess bottom hole 16, the sand pool recess 14, and the outlet port 15 are used as the upstream pipe line. 51 is configured. That is, one end side (upper end side) of the upstream pipe 51 opens at the upper end of the lower waterfall channel 18 and the other end side (lower end side) communicates with the waterhole bottom hole 13 (branch pipe 32). The waterhole bottom hole 13 (branch pipe 32) and the upper end of the lower waterfall flow path 18 are communicated with each other via an ascending pipe line 51.

  Also, one end side (rear end side) of a water supply hose (water supply tube) 36 made of rubber hose or vinyl hose is connected to the other end side (front end side) of the main pipe 31 of the joint pipe 30 on the waterfall 12 side. Further, a submersible pump P1 as a lower waterfall circulation pump is installed in the water tank A, and the other end side (front end side) of the water supply hose 36 is connected to the discharge port of the submersible pump P1. Here, in the present embodiment, a water supply pipe 52 is constituted by the water supply hose 36 and the other end side of the main pipe 31 of the joint pipe 30. That is, one end side of the water supply pipe line 52 is disposed on the other end side of the upstream pipe line 51, and the other end side of the water tank pipe line 52 is communicated with the discharge port of the submersible pump P 1. The end side and the discharge port of the submersible pump P <b> 1 communicate with each other via a water supply line 52.

  In addition, a large number of fluidized sands 6 used in the lower rock wall-like installation 1 assuming waterfalls are accommodated in a waterfall 12 or a sand reservoir 14 or the like. Needless to say, in this embodiment, fluidized particles are constituted by the fluidized sand 6.

  When the submersible pump P <b> 1 is driven in this configuration, the water W in the water tank A is sucked into the submersible pump P <b> 1 and discharged from the discharge port, and the water W is introduced into the water supply hose 36. The water W introduced into the water supply hose 36 is discharged from the discharge nozzle 4 and is vigorously introduced into the upstream pipe 51. In this way, the fluid sand 6 in the basin 12 flows through the basin bottom hole 13 (the branch pipe 32 of the joint pipe 30) due to the water force (water pressure) of the water W introduced into the ascending conduit 51. The fluidized sand 6 sucked into the upstream pipe 51 rises with the water W along the upstream pipe 51 and is fed into the sand pool recess 14 through the sand pool recess bottom hole 16. Thus, when the fluid sand 6 is sufficiently accumulated in the sand reservoir recess 14, the fluid sand 6 overflows from the outlet 15. The water W introduced together with the fluidized sand 6 into the sand reservoir recess 14 is discharged into the water tank A through the outlet 15.

  The fluid sand 6 overflowing from the outlet 15 is discharged to the lower waterfall channel 18, flows down along the lower waterfall channel 18, and is accommodated in the waterhole 12.

  In this way, the fluidized sand 6 circulates between the waterfall channel 18 and the upstream pipe 51 such as the connecting hose 35, so that the fluidized sand 6 flows out continuously without interruption from the outlet 15. It flows down the path 18. In the present embodiment, the lower waterfall T1 is constituted by the rock surface of the lower rock wall-shaped installation 1 and the fluidized sand 6 flowing down the lower waterfall channel 18 or the like.

  Here, in the present embodiment, the fluid sand 6 is composed of silicon beads used as an abrasive for shot blasting (sand blasting). The fluid sand 6 has a true specific gravity of 3.8 and a bulk specific gravity of 2.3. Furthermore, the particle size of the fluid sand 6 is 0.425 mm to 0.600 mm, and the color is white.

  For reference, the true specific gravity of general gravel used in an aquarium fish tank is about 1.73, whereas it is clear that the fluid sand 6 of this embodiment has a high specific gravity.

  Here, in this embodiment, it is preferable to use sand having a true specific gravity of 3.00 to 4.00 and a bulk specific gravity of 2.0 to 3.0 as the fluid sand 6. That is, when the specific gravity is too small, when the fluidized sand 6 is circulated and made to flow down like a waterfall as described in detail later, the fluidized sand 6 is scattered in the water tank A and contaminates the water tank A, The amount of sand is reduced by scattering, which may reduce the attractiveness of the waterfall model, which is not preferable. On the other hand, when the specific gravity is too large, the fluid sand 6 cannot be circulated sufficiently, and the circulation amount of the fluid sand 6 may be reduced to reduce the attractiveness.

  On the other hand, as shown in FIG. 1, a water reservoir recess 24 is formed at the rear of the upper end surface of the upper rock wall installation 2. Further, the rock-like surface of the upper rock wall-like installation 2 is gradually inclined toward the front or the lower side, and is formed substantially vertically at the lower end, and the upper waterfall channel 28 is formed along the surface. It is. The upper waterfall channel 28 is constituted by, for example, a groove formed on the surface of the upper rock wall-shaped installation 2, and the cross-sectional shape is a U-shape to a U-shape. Thereby, the water W flows down almost exactly along the groove as the upper waterfall channel 28.

  In addition, a step portion 29 arranged substantially horizontally is formed in the middle of the upper waterfall channel 28, and the flow velocity and direction change when the water W flows on the step portion 29 as will be described later. Yes.

  A submersible pump P2 as an upper waterfall circulation pump is installed in the water tank A. One end of the first pumping pipe 21 is connected to the discharge port of the submersible pump P2, and the other end of the first pumping pipe 21 is connected to the discharge port of the submersible pump P2. It is drawn out of the water tank and connected to the inlet of the external filter F. Furthermore, one end of the second pumping pipe 22 is connected to the outlet of the external filter F, and the other end of the second pumping pipe 22 is arranged corresponding to the water reservoir recess 24 of the upper rock wall-shaped installation 2. Yes. In the present embodiment, the first and second pumping pipes 21 and 22 constitute a pumping pipe line 53.

  When the submersible pump P <b> 2 is driven in this configuration, the water W in the water tank A is sucked into the submersible pump P <b> 2 and discharged from the discharge port, and the water W is introduced into the external filter F through the first pumping pipe 21. The water W introduced into the external filter F is filtered through the filter medium in the filter, then flows out of the external filter F, and is supplied to the water reservoir recess 24 through the second pumping pipe 22. Thus, when the water W is supplied into the water reservoir recess 24 and the water reservoir recess 24 is filled with the water W, the water W overflows from the water reservoir recess 24 and flows into the upper waterfall channel 28. The water W that has flowed into the upper waterfall channel 28 flows down the upper waterfall channel 28, is dropped onto the water surface of the water tank A, and returns into the water tank A. In the present embodiment, the upper waterfall T <b> 2 is configured by the water W flowing down the rock surface of the upper rock wall installation 2 and the upper waterfall channel 28.

  Here, in this embodiment, the dropping position of the water W dropped on the water surface from the upper waterfall channel 28 is arranged corresponding to the upper end of the lower waterfall channel 18 of the lower rock wall installation 1, A position (falling point) where the fluid sand 6 starts to fall in the lower waterfall T1 is arranged almost on the extension line of the water W introduced into the water from the upper waterfall T2, and the upper waterfall channel 28 and the lower waterfall channel 18 are a series of waterfalls. It is formed like this.

  For this reason, when the submerged pumps P1 and P2 are driven to cause the flowing sand 6 to flow down to the lower waterfall T1, and at the same time the water W flows down to the upper waterfall T2, the waterfall T2 and the lower waterfall T1 are innovative and unrealistic. And a fantastic waterfall landscape is formed. That is, the person (viewer) watching the water tank A suddenly changes into the flowing sand 6 and flows down the lower waterfall T1 when the water W flowing down the upper waterfall T2 is thrown into the water. The illusion is remembered, an attractive situation can be obtained for the viewer, and the product value, the customer effect and the like can be improved. In particular, when water W is dropped from the upper waterfall T2 onto the surface of the water, the water splash rises and foams, resulting in a decrease in the transparency of the surroundings. Therefore, the boundary between the upper waterfall T2 and the lower waterfall T1 is difficult to be visually recognized, so The illusion that W changes to fluidized sand 6 cannot be easily wiped off, a more unrealistic and fantastic waterfall landscape is formed, and a more attractive situation can be surely created.

  In addition, according to the water tank model of the present embodiment, the water W is discharged from the submersible pump P1 to the upstream pipe 51 such as the connecting hose 35 in the lower rock wall-shaped installation 1, and the water flow of the discharged water W is discharged. Thus, the fluidized sand 6 is raised along the ascending pipeline 51 and pushed up from the waterhole 12 to the outlet 15, so that the pushing force is increased as compared with the case where the fluidized sand 6 is pushed up by the air lift effect of the air pump. Can be increased. In addition, since the water W is discharged to the upstream pipe 51 through the discharge nozzle 4, the water force of the water W discharged into the upstream pipe 51 is further increased to further increase the pushing force. be able to. For this reason, even if a sand having a high specific gravity is used as the fluidized sand 6, the fluidized sand 6 can be reliably circulated between the upstream pipe 51 and the lower waterfall channel 18, and a sufficient amount of fluidized sand 6 is interrupted. It is possible to continuously flow down along the lower waterfall flow path 18 without a dynamic and attractive waterfall landscape. In other words, since the high-specific gravity sand can be used as the fluid sand 6 without difficulty, it is possible to reliably prevent the fluid sand 6 flowing out from the outlet 15 from being scattered by the water flow in the water tank A. Can flow smoothly along the lower waterfall channel 18 and can be recovered in the waterhole 12 without leakage. Thus, according to this embodiment, since the fluid sand 6 can be prevented from being scattered in the water tank A, contamination in the water tank A due to the scattering can be prevented, and the decrease of the fluid sand 6 can be prevented. The lack of fluidity due to water can be prevented, and the charm as a waterfall model can be maintained for a long time.

  Here, the tip position of the discharge nozzle 4 in this embodiment will be described in detail. As shown in FIG. 2, the axis of the basin bottom hole 13, in other words, the axis of the branch pipe 32 of the joint pipe 30 fitted in the basin bottom hole 13 is arranged substantially vertically. On the other hand, the axis of the discharge nozzle 4 is arranged in a substantially horizontal direction and arranged in a state substantially orthogonal to the axis of the waterhole bottom hole 13.

  In the present embodiment, the discharge direction of water W from the discharge nozzle 4 (left direction in FIG. 2) is “downstream side (rear side)”, and the opposite direction (right direction in FIG. 2) is “upstream side (right direction in FIG. 2). The front end position of the discharge nozzle 4 is the upstream end position (front end position) Ma of the basin bottom hole 13 and the downstream end position (rear end position) Mb of the basin bottom hole 13. It is good to arrange correspondingly. More preferably, the front end position of the discharge nozzle 4 is disposed between the axial center position Mx of the waterhole bottom hole 13 and the downstream end position (rear end position) Mb of the waterhole bottom hole 13. More preferably, the tip position of the discharge nozzle 4 is arranged corresponding to the position corresponding to the axial center position Mx of the waterfall bottom hole 13 or a position slightly downstream from the axial position Mx. good. That is, when the tip position of the discharge nozzle 4 is arranged on the downstream side (left side in FIG. 2) from the above-mentioned preferable range, the suction force from the basin bottom hole 13 to the upstream pipe line 51 may be weakened. As a result, the amount of the fluidized sand 6 sucked into the upstream pipe 51 from the inside of the waterhole 12 is decreased, the circulation amount of the fluidized sand 6 is decreased, and the attractiveness as the waterfall model is lowered, which is not preferable. On the contrary, when the tip position of the discharge nozzle 4 is arranged on the upstream side (right side in FIG. 2) from the above-mentioned preferable range, a part of the water W discharged from the discharge nozzle 4 flows into the waterhole 13. As a result, backflow may occur. As a result, the fluid sand 6 is not sufficiently sucked from the inside of the waterhole 12 into the ascending pipeline 51, the circulation amount of the fluid sand 6 is reduced, and the attractiveness is lowered.

  In the present embodiment, it is preferable to use a discharge nozzle 4 having a tip opening with an inner diameter (inner diameter) of 4.0 mm to 8.0 mm. That is, when the opening diameter of the tip of the discharge nozzle 4 is included in the above-described preferable range, both the water flow and the amount of water W discharged from the discharge nozzle 4 can be appropriately secured, and the fluid sand 6 can be circulated smoothly. And can significantly improve the appeal of the waterfall model. In other words, when the nozzle tip opening diameter is too small, the amount of water W discharged from the discharge nozzle 4 cannot be secured sufficiently, while when the nozzle tip opening diameter is too large, the water force of the water W cannot be secured sufficiently. Therefore, the fluidized sand 6 cannot be circulated smoothly, and there is a possibility that the fluidity is lacking and the attractiveness may be lowered, which is not preferable.

  Moreover, in this embodiment, since the lower waterfall channel 18 and the upper waterfall channel 28 are constituted by grooves formed on the surfaces of the rock wall-shaped installations 1 and 2, the fluid sand 6 and the water W are supplied to the lower waterfall channel. 18 and the upper waterfall channel 28 can be accurately flowed. For this reason, the flow of the fluid sand 6 and the water W can be stabilized in a good state, and an attractive waterfall landscape can be obtained more reliably.

  Moreover, since the external filter F is assembled | attached on the circulation path of the water W of the upper rock wall installation thing 2 in this embodiment, the water W in the water tank A can be purified with the external filter F. For this reason, aquatic organisms such as tropical fish and aquatic plants can be bred without hindrance by the water tank A to which the waterfall model of the present embodiment is applied. However, when no aquatic organisms are bred, that is, when it is not necessary to filter the water W in the water tank A, the water W in the water tank A is removed from the submersible pump P2 without using the external filter F. What is necessary is just to comprise so that it may draw up directly in the water pool recessed part 24 of the rock-walled installation thing 2. FIG.

  Furthermore, in the present embodiment, a rock pit 19 is formed in the middle of the lower waterfall channel 18 so that the fluid sand 6 flowing down the lower waterfall channel 18 is temporarily retained or separated by the rock pit 19. Therefore, the flow condition of the fluid sand 6 is not monotonous but rich in changes, and an attractive waterfall landscape can be obtained more reliably.

  Furthermore, in this embodiment, since the step part 29 is formed in the middle of the upper waterfall flow path 28 and the flow of the water W flowing down the upper waterfall flow path 28 is changed by the step part 29, the flow of the water W The condition is not monotonous and rich in change, and you can get a fascinating waterfall scenery even more reliably.

  Moreover, in this embodiment, since the lower rock wall installation thing 1 is made into a hollow structure, and the up-pipe 51 is accommodated in the hollow part 10, the piping which comprises the up-pipe 51 etc. is exposed. Can be prevented, and the aesthetics can be further improved.

  In the above embodiment, in the lower rock wall installation 1, the fluid sand 6 is configured to flow down while being in contact with the surface of the lower rock wall installation 1 over almost the entire area of the lower waterfall channel 18. However, the present invention is not limited thereto, and in the present invention, at least a part of the lower waterfall channel 18 of the lower rock wall installation 1 is formed substantially vertically, and the fluid sand flowing down the lower waterfall channel 18 is the above vertical The lower waterfall channel 18 may be configured to fall with little contact with the surface of the lower waterfall rock wall installation 1.

  Similarly, in the said embodiment, you may comprise so that the water W which flows down the upper waterfall flow path 28 of the upper rock wall-shaped installation 2 may fall without contacting the surface of the upper rock wall-shaped installation 2.

  Further, in the above embodiment, when the lower waterfall channel 18 of the lower rock wall installation 1 is formed to be wide, a plurality of waterfalls 12 are formed so as to be arranged in the width direction of the lower waterfall channel 18. You may make it do. In this case, an underwater pump and an upstream pipe 51 are installed for each basin 12 so that the fluidized sand 6 is conveyed to the sand reservoir 14 through the upstream pipe 51 for each basin 12. Alternatively, the fluidized sand 6 discharged from the bottom hole 13 of each waterfall 12 may be merged so as to be conveyed to the sand reservoir recess 14 via one submersible pump and one upstream pipe. .

  Moreover, in the said embodiment, although comprised so that the fluid sand 6 may be raised along the up pipe 51 by the submersible pump P1 (water pump), it is not restricted to it, In the present invention, the fluid sand 6 is made to rise by the air pump. You may make it raise along the pipe line 51. FIG. For example, the air ejected from the air pump is supplied to the lower end portion of the upstream pipeline 51 through the air hose, and the fluid sand 6 is moved along the upstream pipeline 51 by the air lift effect when the air ascends the upstream pipeline 51. It may be configured to raise. In short, any type of pump may be used as the lower waterfall circulation pump as long as the fluidized sand 6 can be raised along the upward pipeline 51.

  Moreover, in the said embodiment, although the large-sized rock wall installation thing as a main body of a waterfall model is comprised by two blocks of the lower rock wall installation object 1 and the upper rock wall installation object 2, it is only to it. However, the present invention is not limited, and in the present invention, a large quayside installation may be formed integrally with one block, or may be configured with three or more blocks.

  The aquarium waterfall model of the present invention can be applied to aquariums installed in various exhibition halls, various stores, general households, and the like.

1: Lower rock wall-shaped installation 12: Waterfall 13: Waterfall bottom hole 18: Lower waterfall channel 19: Rock cove 2: Upper rock wall-shaped installation 24: Puddle recess 28: Upper waterfall channel 4: Discharge nozzle 51: Upstream pipeline 52: Water supply pipeline 53: Pumping pipeline 6: Fluid sand A: Water tank F: External filter Mx: Waterfall bottom hole axial center position Ma: Waterfall bottom hole upstream end Mb: Waterfall bottom Downstream end position P1: Submersible pump (Shimotaki circulation pump)
P2: Submersible pump (Kamitaki circulation pump)
W: Water

Claims (3)

A lower rock wall installation that is installed in an aquarium and has a rocky surface;
A lower waterfall channel provided from the upper side to the lower side along the surface of the lower rock wall-shaped installation, and disposed below the water surface,
The upper end side opens to the upper end of the lower waterfall channel, and the lower end side communicates with the lower end of the lower waterfall channel;
A lower waterfall circulation pump that generates an upward flow in the upstream pipe and raises a large number of fluid particles flowing down along the lower waterfall channel to the upper end of the lower waterfall channel through the upstream channel;
An upper rock wall installation that is provided on the lower rock wall installation and has a rocky surface;
A waterfall channel provided from the upper side to the lower side along the surface of the upper rock wall-shaped installation, and disposed on the water surface,
An upper waterfall circulation pump that pumps the water in the aquarium to the upper end of the upper waterfall channel, causes the water to flow down along the upper waterfall channel, and drops it on the water surface in the aquarium,
A water tank model for water tanks, wherein a water dropping position to be dropped onto the water surface from the upper waterfall channel is arranged corresponding to an upper end of the lower waterfall channel. A waterfall is provided corresponding to the lower end of the lower waterfall channel, and the lower wall side of the waterfall is provided in communication with the bottom wall of the waterhole provided on the bottom wall of the waterfall.
One end side of the water supply pipe line is disposed on the lower end side of the upstream pipe line, and a discharge port of the submersible pump as the lower waterfall circulation pump is connected to the other end side of the water supply pipe line,
The tip of the discharge nozzle provided on one end side of the drainage pipe is disposed corresponding to the lower side of the waterhole bottom hole,
The water flow discharged from the lower waterfall circulation pump through the water supply pipe and the discharge nozzle into the upstream pipe generates an upward flow in the upstream pipe and flows along the upstream pipe. The aquarium waterfall model according to claim 1, wherein the particles are raised. While configured to pump water in the aquarium through the upper waterfall circulation pump to the upper end of the upper waterfall channel through the upper water line,
The aquarium waterfall model according to claim 1 or 2, wherein a filter for filtering water in the pipeline is installed in the middle of the pumping pipeline.

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