JP6370764B2 - Ornamental water tank flow path switching device - Google Patents

Description

  The present invention relates to a channel switching device for an ornamental aquarium that is attached to a pipe channel in an aquarium tank used for viewing while breeding and cultivating tropical fish, aquatic plants and the like in ordinary households.

  In general households, ornamental fish tanks (aquarium fish tanks) are often used when ornamental fish such as tropical fish and ornamental plants (decorative plants) such as aquatic plants are reared and cultivated. In order to ensure a good breeding environment when performing such breeding cultivation, various devices are arranged around the water tank. For example, as shown in Patent Documents 1 and 2, a filtering device (filter) that filters water in the water tank, an illumination device that illuminates the water tank, and the like are installed.

  Since there are a wide variety of water tank filters, it may be possible to arrange a plurality of filters in parallel. For example, when a plurality of filters are arranged in parallel, the filters may be used in parallel, but it is also assumed that the filters are used by appropriately switching depending on the situation in the water tank.

  In addition, in the aquarium filter installed at the top or outside of the aquarium, as a drainage nozzle used when returning the water taken in the filter back into the aquarium, for example, a drainage nozzle that discharges water by a shower flow type, or a wide flow type There are water discharge nozzles for discharging water, and by appropriately switching and using these water discharge nozzles, the water flow in the aquarium can be changed in various ways, and a good breeding environment can be provided.

JP 2006-55015 A JP 2006-180833 A

  In a conventional ornamental water tank, a plurality of water tank filters can be used by switching them appropriately, or a plurality of water discharge nozzles can be used by switching them appropriately. A flow path switching device such as a flow path switching valve for switching is required.

  However, in the past, there is no dedicated channel switching device suitable for an ornamental water tank used in general households, and the development of such a channel switching device is eagerly desired.

  This invention is made | formed in view of said subject, and it aims at providing the flow-path switching apparatus of the ornamental water tank which can be used suitably for an ornamental water tank.

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

[1] An ornamental water tank flow path switching device attached to a pipe flow path around a water tank,
An outer pipe having first and second outlets formed in a manner penetrating the peripheral wall;
The outer pipe is disposed in a state of being movably accommodated with respect to the outer pipe, and includes an inner pipe having an opening formed in a manner of penetrating the peripheral wall,
An inlet that communicates with the inner pipe is formed in the outer pipe,
The inner pipe is moved with respect to the outer pipe, the opening is made to correspond to the first outlet, and the second outlet is closed by the peripheral wall of the inner pipe, thereby allowing the inner pipe to pass through the inner pipe. A first flow path state in which water that has flowed in flows out through the opening and the first outlet, the opening corresponding to the second outlet, and the first outlet is closed by a peripheral wall of the inner pipe. The water is introduced into the inner pipe from the inflow port, and is configured to be switchable between a second flow path state in which the water flows out through the opening and the second outlet. Water tank flow switching device.

[2] The opening has first and second openings,
In the first flow path state, the first opening is arranged corresponding to the first outlet, and the second opening is arranged with a position shifted with respect to the second outlet,
In the second flow path state, the first opening is arranged with a position shifted from the first outlet, and the second opening is arranged corresponding to the second outlet. The flow path switching device for an ornamental water tank according to the preceding item 1.

  [3] The flow path switching device for an ornamental aquarium according to the above item 1 or 2, wherein the flow path is switched by rotating the inner pipe around the axis with respect to the outer pipe. .

  [4] Any of the preceding items 1 to 3, wherein an operation part for moving the inner pipe is fixed to a tip of the inner pipe, and the operation part is disposed in a state protruding from the tip of the outer pipe to the tip side. The flow path switching device for an ornamental aquarium according to claim 1.

  [5] The inflow port is provided at the proximal end of the outer pipe, and the inside of the inner pipe communicates with the outside of the outer pipe through the inflow port and a proximal end side opening of the inner pipe. The flow path switching device for an aquarium water tank according to any one of the preceding items 1 to 4.

[6] The inflow port is formed in a through state in the peripheral wall of the outer pipe,
A water inlet is formed over the entire circumference in a penetrating state corresponding to the inlet on the peripheral wall of the inner pipe,
The flow path switching device for an ornamental aquarium according to any one of the preceding items 1 to 4, wherein the inside of the inner pipe and the outside of the outer pipe communicate with each other through the inlet and the water inlet.

  [7] The preceding item, wherein at least one of the inlet and the first and second outlets of the outer pipe is provided with a pipe-like joint for connecting another pipe so as to protrude outward. The flow path switching device for an ornamental water tank according to any one of 1 to 6.

  According to the ornamental water tank flow path switching device of the invention [1], since the flow path is switched by moving the inner pipe with a double pipe structure, the operation reliability is high with a simple structure and the general household. It can be suitably used for an ornamental water tank that is often used in, for example.

  According to the ornamental water tank flow path switching device of the invention [2], the above effect can be obtained more reliably.

  According to the flow path switching device for an ornamental water tank of the invention [3], since the flow path is switched by rotating the pipe, even higher operational reliability can be obtained.

  According to the flow path switching device for an ornamental water tank of the invention [4], since the operation of the inner pipe can be performed by pinching the operating portion, the flow path switching operation can be performed more easily and reliably.

  According to the ornamental water tank flow path switching device of the inventions [5] and [6], the above-described effects can be obtained more reliably.

  According to the ornamental water tank flow path switching device of the invention [7], pipes can be easily and reliably connected to the inlet, the first and second outlets via the pipe-shaped joint.

FIG. 1 is a perspective view showing a water tank filter to which a flow path switching device according to a first embodiment of the present invention is applied. FIG. 2 is a side cross-sectional view showing the vicinity of the filter medium in the water tank filter of the first embodiment. FIG. 3 is a side cross-sectional view showing the periphery of the flow path switching pipe in the aquarium filter of the first embodiment. FIG. 4 is a perspective view showing a flow path switching pipe applied to the aquarium filter of the first embodiment. FIG. 5 is an exploded perspective view showing the flow path switching pipe of the first embodiment. 6A and 6B are schematic cross-sectional views showing the flow path switching pipe of the first embodiment, in which FIG. 6A is a schematic cross-sectional view in a circulating state, and FIG. 6B is a schematic cross-sectional view in a drained state. FIG. 7 is a block diagram showing an ornamental water tank to which a flow path switching device according to a second embodiment of the present invention is applied. FIG. 8 is a schematic cross-sectional view showing a flow path switching pipe applied to the ornamental water tank of the second embodiment. FIG. 8 (a) is a schematic cross-sectional view in the first flow path state, and FIG. It is a schematic sectional drawing in the state of 2 flow paths. FIG. 9 is a block diagram showing an ornamental water tank to which a flow path switching device according to a third embodiment of the present invention is applied. FIG. 10 is an exploded perspective view showing the flow path switching pipe applied to the ornamental water tank according to the third embodiment. FIG. 11 is a schematic cross-sectional view showing the flow path switching pipe of the third embodiment, in which FIG. 11 (a) is a schematic cross-sectional view in the first flow path state, and FIG. 11 (b) is a schematic view in the second flow path state. It is sectional drawing. FIG. 12 is a block diagram showing a flow path switching pipe to which different types of water discharge pipes are attached in the third embodiment. FIG. 13 is a schematic cross-sectional view showing a flow path switching pipe according to a first modification of the present invention. FIG. 13 (a) is a schematic cross-sectional view in the first flow path state, and FIG. 13 (b) is a second flow path. It is a schematic sectional drawing in a state. FIG. 14 is a schematic cross-sectional view showing a flow path switching pipe of a second modified example applicable to the aquarium filter of the present invention. FIG. 14 (a) is a schematic cross-sectional view in the first flow path state, and FIG. ) Is a schematic cross-sectional view in the second flow path state. FIG. 15 is a schematic cross-sectional view showing a flow path switching pipe of a third modification applicable to the aquarium filter of the present invention. FIG. 15 (a) is a schematic cross-sectional view in the first flow path state, and FIG. ) Is a schematic cross-sectional view in the second flow path state.

<First Embodiment>
FIG. 1 is a perspective view showing an aquarium filter F1 to which a flow path switching device according to a first embodiment of the present invention is applied. As shown in the figure, the aquarium filter (filtering device) F1 is a so-called outer filter that is supported on the side wall of the aquarium tank A.

  This filter F1 includes a filter casing 1 disposed along the outer wall surface of the upper end of the peripheral side wall of the ornamental fish tank A, an electric circulation pump 2 installed in the filter casing 1, and water in the tank A. Are introduced into the filter casing 1 and a flow path switching pipe P1 as a flow path switching device is provided as basic components.

  The filter casing 1 has a substantially box shape with an open upper end, and is formed in a substantially rectangular shape in plan view.

  FIG. 2 is a side sectional view showing the vicinity of the filter medium in the water tank filter F1. As shown in FIGS. 1 and 2, a notch 11 is formed at the upper edge of the side wall (back wall) corresponding to the water tank A among the peripheral side walls of the filter casing 1. Further, a latching piece 12 is formed integrally with the cutout edge portion of the cutout portion 11 so as to protrude toward the water tank A and bend downward.

  And the latching piece 12 is latched by the upper end edge of the one side wall of the water tank A, The filter casing 1 is supported by the one side wall of the water tank A, and follows the outer surface (outer wall surface) of the one side wall upper end part of the water tank A. Are arranged.

  A filter medium 15 is disposed in the filter casing 1 corresponding to the notch 11. Then, as will be described later, the water W in the water tank A pumped into the filter casing 1 by the circulation pump 2 passes through the filter medium 15 and is filtered, and then overflows from the notch 11 and returns to the water tank A. It is like that.

  FIG. 3 is a side sectional view showing the periphery of the flow path switching pipe in the aquarium filter F1. As shown in FIG. 1 and FIG. 3, the introduction pipe 3 has an inverted U shape or a downward U shape, and the folded portion at the upper end crosses one side wall of the water tank A and the back wall of the filter casing 1. Are arranged as follows. One end opening (introduction port) of the introduction pipe 3 is disposed below the water surface of the water tank A, and the other end opening (outlet port) is disposed inside the filter casing 1.

  An electric circulation pump 2 is disposed in the filter casing 1. The suction port 21 of the circulation pump 2 is connected and fixed to the other end opening (outlet port) of the introduction pipe 3. When the circulation pump 2 is driven, the suction port 21 becomes negative pressure and the inside of the introduction pipe 3 also becomes negative pressure. As a result, the water W in the water tank A is sucked into the introduction pipe 3 from its one end opening (inlet), and the water W is sucked into the circulation pump 2 from the suction port 21 and discharged from the discharge port 22. It has become.

  4 is a perspective view showing a flow path switching pipe P1 applied to the aquarium filter F1, FIG. 5 is an exploded perspective view showing the flow path switching pipe P1, and FIG. 6 is a schematic sectional view showing the flow path switching pipe P1. It is. As shown in FIGS. 4 to 6, the flow path switching pipe P <b> 1 connected and fixed to the discharge port 22 of the circulation pump P <b> 1 has a double pipe structure including an outer pipe 41 and an inner pipe 51.

  Both ends of the outer pipe 41 are opened, and a pipe-shaped joint 421 is attached to one end opening so as to protrude outward along the axial direction. In the present embodiment, the pipe hole of the pipe-shaped joint 421 and one end opening of the outer pipe constitute an inflow port 42 that communicates between the inside and outside of the outer pipe 41.

  Pipe joints 431 and 441 are attached to the peripheral wall of the outer pipe 41 so as to be aligned in the axial direction and protrude outward in the radial direction. A through hole is formed in the peripheral wall of the outer pipe 41 corresponding to each pipe hole of the pipe-shaped joints 431 and 441. In this embodiment, the pipe hole of the pipe-shaped joint 431 and one through-hole constitute a circulation outlet (first outlet) 43 that communicates between the inside and the outside of the outer pipe 41, and the pipe of the pipe-shaped joint 441. A drainage outlet (second outlet) 44 that communicates the inside and outside of the outer pipe 41 is constituted by the hole and the other through hole.

  The pipe-shaped joints 421, 431, and 441 may be attached to necessary places, and may be attached to the inflow port 42 or the drainage outlet 44, for example. Furthermore, if the pipe-shaped joints 421, 431, and 441 are formed so that the diameter dimension gradually decreases toward the tip, a plurality of types of pipes and hoses with different pipe diameters can be reliably connected. .

  One end (base end) of the inner pipe 51 is opened, and a large-diameter operation portion 56 is attached to the other end side (tip end side). The other end side of the inner pipe 51 is closed by the operation unit 56. A circulation opening (first opening) 53 and a drain opening (second opening) 54 are formed on the peripheral wall of the inner pipe 51 so as to penetrate the peripheral wall. The circulation opening 53 and the drainage opening 54 correspond to the circulation outlet 43 and the drainage outlet 44 of the outer pipe 41, respectively, and both the openings 53 and 54 are arranged 180 degrees out of phase with each other.

  A watertight O-ring 55 is wound around one end of the circulation opening 53 in the inner pipe 51, between the openings 53 and 54, and the other end of the drainage opening 54.

  The inner pipe 51 is inserted and arranged in the outer pipe 41 so as to be rotatable in the circumferential direction (axial direction) with respect to the outer pipe 41 to form a flow path switching pipe P1.

  In this flow path switching pipe P1, the inlet 42 of the outer pipe 41 is disposed corresponding to one end opening of the inner pipe 51, and the inside of the inner pipe 51 is exposed to the outside via this inlet 42 and one end opening. It is communicated.

  Further, in the present embodiment, the inner pipe 51 in the flow path switching pipe P1 is rotated by pinching the operation portion 56, so that the circulation opening 53 of the inner pipe 51 corresponds to the circulation outlet 43 of the outer pipe 41. A state in which the drain outlet 44 of the outer pipe 41 is closed by the peripheral wall of the inner pipe 51 (circulation state), and the circulation outlet 43 of the outer pipe 41 is closed by the peripheral wall of the inner pipe 51. It is configured to be switchable between a state (drainage state) in which the drainage opening 54 of 51 is arranged corresponding to the drainage outlet 44 of the outer pipe 41.

  In the circulation state (first or second passage state) in the flow path switching pipe P1 having this configuration, when the water W flows from the inlet 42 of the outer pipe 41, the water W flows into the inner pipe 51. At the same time, the water W that has flowed into the inner pipe 51 flows out through the circulation opening 53 and the circulation outlet 43. Further, in the drained state (second or first flow path state), the water W that has flowed into the inner pipe 51 from the inlet 42 of the outer pipe 41 is discharged to the outside through the drain opening 54 and the drain outlet 44. It has become so.

  As shown in FIGS. 1 and 3, the inlet 42 in the flow path switching pipe P <b> 1 having this configuration is connected and fixed to the discharge port 22 of the circulation pump 2 in the filter casing 1. In this connected state, the flow path switching pipe P1 is arranged vertically so that one end side (inlet 42 side) is located below and the other end side (operation unit 56 side) is located above.

  Further, in this state, the drain outlet 44 is disposed above the circulation outlet 43. Further, the drain outlet 44 is disposed in the filter casing 1 in plan view. Further, in a state where the water W is stored in the filter casing 1, the drain outlet 44 is disposed above the water surface. In other words, the drain outlet 44 is disposed at a position other than underwater.

  The circulation outlet 43 in the flow path switching pipe P1 only needs to be disposed in the filter casing 1 in plan view. For example, the circulation outlet 43 may be disposed in water or may be disposed on the water surface.

  In the aquarium filter F1 of the present embodiment, a cover member that covers the upper end opening of the filter casing 1 may be detachably attached.

  In the aquarium filter F1 of the present embodiment configured as described above, in addition to the original function of filtering the water W in the aquarium A, the aquarium A is used when water is changed during cleaning or maintenance inspection of the aquarium A. It also has a function of draining the water W inside.

  First, when performing a normal filtration process, the operation part 56 of the flow path switching pipe P1 is operated to set the circulation state as necessary, the circulation outlet 43 of the flow path switching pipe P1 is opened, and The drain outlet 44 is closed. In this state, the circulation pump 2 is driven.

  Thereby, the water W in the water tank A is sucked from the introduction pipe 3 and sucked from the suction port 21 of the circulation pump 2. The water W sucked into the circulation pump 2 is discharged from the discharge port 22 and flows into the flow path switching pipe P1 from the inflow port. The water W flowing into the flow path switching pipe P1 is discharged from the circulation outlet 43 and flows into the filter casing 1. The water W that has flowed into the filter casing 1 passes through the filter medium 15 and is filtered, then overflows the notch 11 of the filter casing 1, circulates on the hooking piece 12, and returns to the water tank A.

  Thus, the water W in the water tank A is introduced into the filter casing 1, passes through the filter medium 15, and then circulates back into the water tank A, whereby the water W in the water tank A is filtered.

  Here, in this embodiment, the part from the inlet 42 of the introduction pipe 3, the circulation pump 2, and the flow path switching pipe P1 to the outlet 43 for circulation, the filter casing 1, the filter medium 15, the notch 11, and the latching piece 12 are used. A circulation flow path is formed by the upper surface of.

  Further, the introduction pipe 3 and the circulation pump 2 constitute a pipe passage around the water tank. Therefore, a flow path switching pipe P1 as a flow path switching device is attached to the circulation pump 2 in this pipe flow path.

  On the other hand, when drainage treatment is performed, the operation unit 56 of the flow path switching pipe P1 is operated to set the drainage state as necessary, the drainage outlet 44 of the flow path switching pipe P1 is opened, and the circulation is performed. The outlet 43 is closed. Further, one end of a drainage hose (not shown) is connected to the pipe-shaped joint 441 of the drainage outlet 44 of the flow path switching pipe P1, and the other end of the drainage hose is disposed at a predetermined drainage location such as a bucket. In this state, the circulation pump 2 is driven. Needless to say, the flow path switching pipe P1 may be operated to switch from the filtered state to the drained state while the circulation pump 2 is driven.

  In this drained state, the water W in the water tank A is sucked from the introduction pipe 3 and sucked from the suction port 21 of the circulation pump 2. The water W sucked into the circulation pump 2 is discharged from the discharge port 22 and flows into the flow path switching pipe P1 from the inflow port. The water W flowing into the flow path switching pipe P1 is discharged from the drain outlet 44 and discharged to a predetermined drainage location such as a bucket via the drain hose. Thus, after discharging a predetermined amount of water W, water can be changed by newly supplying a predetermined amount of water W.

  Thus, in the aquarium filter F1 of the present embodiment, the water W in the aquarium A can be easily and smoothly simply by performing a one-touch operation of switching the flow path switching pipe P1 during drainage such as when changing water. Can be discharged.

  Furthermore, at the time of this drainage, the water W in the water tank A is sucked from the introduction pipe 3 previously installed in the water tank A. In other words, the introduction pipe 3 is set in advance to a position where a covering material such as pebbles, gravel, and sand laid in the water tank A, and decorative parts such as artificial plants installed in the water tank A are not sucked. Further, a strainer or the like for preventing foreign matter from being sucked in is attached to the lower end of the introduction pipe 3. For this reason, according to the aquarium filter F1 of this embodiment, it is possible to reliably prevent a problem that the layout material and decorative parts are sucked and discharged together with water during drainage, and the layout is destroyed. Later, the troublesome work of readjusting the layout is unnecessary, and the waste water treatment can be performed more easily.

  Further, in the aquarium filter F1 of the present embodiment, the water W in the aquarium A is sucked and discharged from the lower end of the introduction pipe 3 at the time of drainage, so that the water level in the aquarium A is higher than the lower end of the introduction pipe 3. When it becomes low, further drainage can be prevented. In other words, it is possible to prevent the water W from being discharged more than necessary, and the discharge amount of the water W, and thus the replacement amount, can be appropriately maintained, and the breeding and cultivation environment in the water tank A can be favorably maintained.

  Further, in the aquarium filter F1 of the present embodiment, since a drainage mechanism is added by attaching a flow path switching pipe P1 or the like to a conventional filter (filtering device), a conventional drainage device (drainage mechanism) dedicated to drainage. Compared to the case of assembling, there is no need to secure a space for installing a drainage mechanism around the water tank. Accordingly, it is possible to save space and to simply finish the structure around the water tank, and to obtain a good aesthetic appearance as the whole water tank.

  In the present embodiment, since the drain outlet 44 of the flow path switching pipe P1 is disposed on the water surface of the filter casing 1, the user apologizes during the filtration process and switches to the drained state to flow the water W through the flow path. Even if the water is discharged from the drain outlet 44 of the switching pipe P1, the water W discharged from the drain outlet 44 is collected in the filter casing 1. For this reason, the malfunction that the water W will be scattered outside the water tank A can be prevented reliably.

  In the aquarium filter F1 of the first embodiment, the discharge port 22 of the circulation pump 2 is connected to the inlet 41 of the flow path switching pipe P1 by a closed pipe. Thus, the water W can be discharged efficiently and smoothly.

  In this embodiment, since the pipe joint 441 is attached to the drain outlet 44 of the flow path switching pipe P1 (see FIGS. 4 and 5), the drain is discharged to the drain outlet 44 via the pipe joint 441. A hose etc. can be connected easily and reliably, and the convenience can be improved.

  Further, since the pipe-shaped joints 421 and 431 are also attached to the inlet 42 and the circulation outlet 43 of the flow path switching pipe P1 (see FIGS. 4 and 5), the pipe-shaped joints 421 and 431 are used as described above. Hose and pipe can be connected easily and securely.

  Further, the flow path switching pipe P1 used in the above embodiment can easily switch the flow path only by rotating the inner pipe 51 with respect to the outer pipe 41.

  Moreover, since the flow path switching pipe P1 as the flow path switching device of the present embodiment switches the flow path by the rotation of the inner pipe 51, high operational reliability can be obtained. Thus, since the flow path switching pipe P1 of the present embodiment has a high operational reliability and a simple structure, it can be suitably used for the ornamental water tank A widely used in general households. it can.

Second Embodiment
FIG. 7 is a block diagram showing an ornamental water tank A to which a flow path switching device according to a second embodiment of the present invention is applied. As shown in the figure, in this water tank A, first and second water tank filters F21 and F22, a flow path switching pipe P2 as a flow path switching device, and an electric circulation pump (submersible pump) 2 The first filtering process by the first filter F21 and the second filtering process by the second filter F22 can be switched as appropriate.

  That is, in the flow path switching pipe P2 used in the second embodiment as shown in FIGS. 7 and 8, the first outlet 43 and the second outlet 44 are located at substantially the same height on the peripheral wall of the outer pipe 41. And are arranged so as to be arranged at positions shifted by 180 ° from each other. Further, the inner pipe 51 is formed with one opening 52 serving as both the first opening and the second opening corresponding to the first outlet 43 and the second outlet 44 of the outer pipe 41.

  The inner pipe 51 is accommodated in the outer pipe 41 so as to be rotatable in the direction around the axis (circumferential direction) to form a flow path switching pipe P2. In this flow path switching pipe P2, the opening 52 of the inner pipe 51 is arranged in correspondence with the first outlet 43 of the outer pipe 41 by pinching and rotating the operation portion 56 (switching operation). In a state in which the second outlet 44 of the outer pipe 41 is closed by the peripheral wall 51, the inflow port 42 is in a first filtration state in communication with the first outlet 43. Further, when the opening 52 of the inner pipe 51 is arranged to correspond to the second outlet 44 of the outer pipe 41 by the switching operation and the first outlet 43 of the outer pipe 41 is closed by the peripheral wall of the inner pipe 51, the inlet 42 is The second filtration state communicates with the second outlet 44.

  As shown in FIG. 7, the upper end of the introduction pipe 3 arranged vertically is connected to the inlet 42 of the flow path switching pipe P2, and the lower end of the introduction pipe 3 is arranged in water. Further, the discharge port 22 of the circulation pump 2 is connected to the lower end of the introduction pipe 3, and the circulation pump 2 is disposed in water.

  One end of the first intermediate pipe 31 is connected to the first outlet 43 of the flow path switching pipe P2, and the other end of the first intermediate pipe 35 is connected to the inlet of the first filter F21. Further, one end of the second intermediate pipe 32 is connected to the second outlet 44 of the flow path switching pipe P2, and the other end of the second intermediate pipe 32 is connected to the inlet of the second filter F22.

  In addition, one end of each of the first and second return pipes 131 and 132 is connected to each outlet of the first and second filters F21 and F22, and the other end of each of the first and second return pipes 131 and 132. Are disposed inside the water tank A, respectively. The first and second filters F21 and F22 each contain a filter medium.

  Here, in the present embodiment, the circulation pump 2, the introduction pipe 3, the first and second intermediate pipes 31 and 32, the inlets and outlets of the first and second filters F21 and F22, and the first and second return pipes 131 and 132 are used. A pipe flow path around the water tank is configured, and a flow path switching pipe P2 as a flow path switching device is attached to the pipe flow path.

  In this 3rd Embodiment, since another structure is substantially the same as the said embodiment, the same code | symbol is attached | subjected to the same or an equivalent part, and duplication description is abbreviate | omitted.

  In the second embodiment, when the flow path switching pipe P2 is set to the first filtration state, the water W in the water tank sucked from the suction port 21 of the circulation pump 2 is discharged from the discharge port 22 of the circulation pump 2. Then, it flows into the flow path switching pipe P2 from the inlet 42 through the introduction pipe 3. The water W flowing into the flow path switching pipe P2 is discharged from the first outlet 43 and introduced into the first filter F21 via the first intermediate pipe 31. The water W introduced into the first filter F21 passes through the internal filter medium, and then flows out of the first filter 21 and returns into the water tank A through the first return pipe 131. As described above, in the first filtration state, the water W circulates between the water tank A and the first filter F21, whereby the first filtration treatment in which the water W is filtered by the first filter F21 is performed.

  On the other hand, in the state where the flow path switching pipe P2 is set to the second filtration state, the water W in the water tank sucked from the suction port 21 of the circulation pump 2 is discharged from the discharge port 22 of the circulation pump 2 and is introduced into the introduction pipe 3. And flows into the flow path switching pipe P2 from the inlet 42. The water W flowing into the flow path switching pipe P2 is discharged from the second outlet 44 and introduced into the second filter F22 via the second intermediate pipe 32. The water W introduced into the second filter F <b> 22 passes through the internal filter material, and then flows out of the second filter 22 and returns into the water tank A through the second return pipe 132. As described above, in the second filtration state, the water W circulates between the water tank A and the second filter F22, whereby the second filtration process in which the water W is filtered by the second filter F22 is performed.

  As described above, the operation unit 56 is rotated as necessary to switch the flow path of the flow path switching pipe P2, thereby appropriately switching between the filtration process by the first filter F21 and the filtration process by the second filter F22. Can be done.

<Third Embodiment>
FIG. 9 is a block diagram showing an ornamental water tank A to which a flow path switching device according to a third embodiment of the present invention is applied.

  As shown in the figure, in this water tank A, when returning the water W from the water tank filter F3 to the water tank A, the water A is discharged into the water tank A in a wide flow, and the shower water flows in the water tank A. The shower flow water discharge to be discharged can be appropriately switched.

  FIG. 10 is an exploded perspective view showing a flow path switching pipe P3 as a flow path switching device applied to the water tank A of the third embodiment, and FIG. 11 is a schematic sectional view showing the flow path switching pipe P3.

  As shown in FIGS. 9 to 11, the outer pipe 41 in the flow path switching pipe P <b> 3 is formed in a substantially square outer peripheral cross-sectional shape, and a cylindrical cylindrical hole having a circular cross-section is formed inside. . One end side (base end side) in the cylindrical hole of the outer pipe 41 is closed, and the other end side (tip end side) is open.

  A pipe-shaped joint 421 is attached to an intermediate portion of one side wall (upper wall) of four surrounding side walls (peripheral walls) of the outer pipe 41 so as to protrude outward (downward). Correspondingly, a through hole is formed in one side wall of the outer pipe 41. In this embodiment, the inlet 42 is constituted by the through hole and the pipe hole of the pipe-shaped joint 421.

  Pipe joints 431 and 441 are attached to both end portions of the side wall (lower wall) facing the one side wall (upper wall) among the four side walls around the outer pipe 41 so as to protrude outward (downward). In addition, through holes are formed corresponding to the pipe joints 431 and 441, respectively. In the present embodiment, the first outlet 43 is constituted by the pipe hole of one pipe-shaped joint 431 and the through-hole corresponding to the hole, and corresponds to the pipe hole of the other pipe-shaped joint 441 and the hole. A second outlet 44 is constituted by the through hole.

  The inner pipe 51 has a cylindrical shape and is configured to be inserted into the outer pipe 41 from the open end portion of the outer pipe 41. A large-diameter operation portion 56 is formed on the distal end side (the other end side) of the inner pipe 51.

  A first opening 53 and a second opening 54 are formed at both ends of the peripheral wall of the inner pipe 51 so as to penetrate the peripheral wall. The first and second openings 53 and 54 correspond to the first and second outlets 43 and 44 of the outer pipe 41, respectively, are arranged 180 degrees out of phase with each other, and open in directions opposite to each other. .

  Furthermore, in the intermediate part in the peripheral wall of the inner pipe 51, the water flow port 50 is formed over almost the entire circumference in such a manner as to penetrate the peripheral wall.

  The inner pipe 51 is inserted into the outer pipe 41 from the distal end side of the outer pipe 41 to form a flow path switching pipe P3. In this assembled state, the inner pipe 51 is configured to be rotatable with respect to the outer pipe 41 in the direction around the axis (circumferential direction).

  In the present embodiment, as in the above embodiment, the operation portion 56 of the inner pipe 51 is disposed so as to protrude outward from the distal end side of the outer pipe 41, and the inner pipe 51 is rotated by pinching the operation portion 56. Can do. Further, regardless of the rotational position of the inner pipe 51 relative to the outer pipe 41, the water inlet 50 of the inner pipe 51 is always arranged corresponding to the inlet 42 of the outer pipe 41. The inner pipe 51 and the outer pipe 41 are always in communication with each other through the inlet 42 and the water inlet 50 of the inner pipe 51.

  In the present embodiment, by rotating the inner pipe 51 in the flow path switching pipe P3, the first opening 53 of the inner pipe 51 is disposed corresponding to the first outlet 43 of the outer pipe 41, and the inner pipe The state in which the second outlet 44 of the outer pipe 41 is closed by the peripheral wall 51 (first flow path state), and the first outlet 43 of the outer pipe 41 is closed by the peripheral wall of the inner pipe 51 as shown in FIG. In addition, the second opening 54 of the inner pipe 51 is configured to be switchable between a state (second flow path state) in which the second opening 54 is disposed corresponding to the second outlet 44 of the outer pipe 41.

  Therefore, in this flow path switching pipe P3, in the first flow path state, when water W flows from the inlet 42 of the outer pipe 41 as shown in FIG. 11A, the water W passes through the water inlet 50. While flowing into the inner pipe 51, the water W flowing into the inner pipe 51 flows out to the outside through the first opening 53 and the first outlet 43. Furthermore, in the second flow path state, as shown in FIG. 11A, the water W that has flowed into the inner pipe 51 from the inlet 42 of the outer pipe 41 passes through the second opening 54 and the second outlet 44 to the outside. It is supposed to be discharged.

  The flow path switching pipe P <b> 3 having this configuration is fixed to the upper end of the inner wall surface of the water tank A. A wide-flow water discharge pipe 35 having a long water discharge port in the lateral direction is attached to the first outlet 43 of the flow path switching pipe P3, and the water discharge port includes a plurality of small holes in the second outlet 44. The shower water discharge type water discharge pipe 36 is attached.

  An externally installed filter F3 is installed outside the water tank A, and an electric circulation pump (submersible pump) 2 is disposed below the water surface inside the water tank A. Further, the discharge port 22 of the circulation pump 2 is connected to the inlet of the filter F3 via the introduction pipe 3, and the outlet of the filter F3 is connected to the inlet 42 of the flow path switching pipe P3 via the return pipe 13. ing.

  Here, in this embodiment, the circulation pump 2, the introduction pipe 3, the inlet / outlet of the filter F 3, the return pipe 13, and the water discharge pipes 35 and 36 constitute a pipe flow path around the water tank, and the flow path is connected to the pipe flow path. A flow path switching pipe P3 as a switching device is attached.

  In this 3rd Embodiment, since another structure is substantially the same as the said embodiment, the same code | symbol is attached | subjected to the same or an equivalent part, and duplication description is abbreviate | omitted.

  In the water tank A of this embodiment, in a state where the flow path switching pipe P3 is switched as necessary to be set to the first flow path state (wide flow water discharge state), the water is sucked from the suction port 21 of the circulation pump 2. The water W in the water tank A flows into the filter F3 through the discharge port 22 and the introduction pipe 3, passes through the filter medium, flows out of the filter F3, and flows into the flow path switching pipe P3 through the return pipe 13. It flows from the inlet 42. The water W that has flowed into the flow path switching pipe P3 flows into the wide flow water discharge pipe 35 through the first opening 53 and the first outlet 43, and is discharged as a wide flow from the water discharge port of the water discharge pipe 35. Return to the tank A.

  On the other hand, in the state where the flow path switching pipe P3 is set to the second flow path state (shower flow water discharge state), the water W in the water tank A sucked from the circulation pump 2 passes through the filter F3 and flows into the flow path switching pipe P3. It flows in from the inlet 42. The water W flowing into the flow path switching pipe P3 flows into the shower flow type water discharge pipe 36 via the second opening 54 and the second outlet 44, and is discharged as a shower flow from the water discharge port of the water discharge pipe 36. Return to the tank A.

  As described above, in the water tank A of the present embodiment, when the water W filtered by the filter F3 is returned to the water tank A by switching the flow path of the flow path switching pipe P3 as necessary, the water is discharged in a wide flow. It is possible to appropriately switch between a wide-flow water discharge state and a shower-flow water discharge state where water is discharged in the shower flow.

  In this way, by appropriately switching between wide-flow water discharge and shower-flow water discharge, the water flow situation in the tank A can be brought close to a natural situation that is not artificial, and a comfortable environment is provided for animals and plants to be cultivated. Can do.

  In addition, in this 3rd Embodiment, as shown in FIG. 13, by changing the direction of the water discharge port of the water discharge pipes 35 and 36 attached to the 1st and 2nd exits 43 and 44 of the flow-path switching pipe P3, When returning water W into A, one-way water discharge from one water discharge pipe 35 toward one direction (for example, diagonally downward to the left) and the other direction (for example, diagonally downward to the right) from the other water discharge pipe 36 It is also possible to switch appropriately between the other-direction water discharge discharged toward the water. Thereby, like the above, the water flow situation in the tank A can be brought close to a natural situation, and a comfortable breeding environment can be provided.

<Modification>
In the present invention, the configuration of the flow path switching pipe as the flow path switching device is not limited to that of the above embodiment, and for example, the following flow path switching pipes P4 to P6 can be used.

  That is, the flow path switching pipe P4 of the first modification shown in FIG. 13 has an inflow port 42 formed on one end side (base end side) of the peripheral wall of the outer pipe 41. Further, a first outlet 43 is formed at an intermediate portion of the peripheral wall of the outer pipe 41, and a second outlet 44 is formed at the other end side (front end side). The first and second outlets 43 and 44 are opened in the same direction, and the inlet 42 is opened in the opposite direction (a direction different by 180 °) from the outlets 43 and 44. A portion corresponding to the inflow port 42 on the proximal end side of the inner pipe 51 does not have a peripheral wall, and a portion without the peripheral wall (portion indicated by a broken line in the figure) is configured as a water flow port 50. That is, the water flow port 50 is formed on the base end side of the inner pipe 51 over the entire circumference. Further, first and second openings 53 and 54 are formed in the middle portion and the distal end side of the peripheral wall of the inner pipe 51 corresponding to the first and second outlets 43 and 44, respectively. The first and second openings 53 are arranged 180 degrees out of phase with each other. The inner pipe 51 is accommodated in the outer pipe 41 so as to be rotatable in the circumferential direction, thereby forming a flow path switching pipe P4. In this flow path switching pipe P4, the inner pipe 51 is rotated with respect to the outer pipe 41, and the first opening 53 of the inner pipe 51 is connected to the first outlet 43 of the outer pipe 41 as shown in FIG. Correspondingly, by closing the second outlet 44 of the outer pipe 41 with the peripheral wall of the inner pipe 51, the water W introduced from the inlet 42 is led into the inner pipe 51 through the water outlet 50, and the water The first flow path state in which W is caused to flow out through the first opening 53 and the first outlet 43, and the first outlet 43 of the outer pipe 41 by the peripheral wall of the inner pipe 51 as shown in FIG. By closing and making the second opening 54 of the inner pipe 51 correspond to the second outlet 44 of the outer pipe 41, the inlet 42 and the water inlet 5 The water W flowing into the inner pipe 51 through, and is switchable configured between the second flow path conditions so as to flow out through the second opening 54 and the first outlet 44.

  The flow path switching pipe P5 of the second modification shown in FIG. 14 has first and second outlets 43 and 44 formed on one end side (base end side) and the other end side of the peripheral wall of the outer pipe 41, and one end An inflow port 42 is formed. The first and second outlets 43 and 44 are arranged 180 degrees out of phase with each other. On the peripheral wall of the inner pipe 51, first and second openings 53 and 54 are formed side by side in the axial direction corresponding to the first and second outlets 43 and 44. The inner pipe 51 is accommodated in the outer pipe 41 so as to be rotatable in the circumferential direction, thereby forming a flow path switching pipe P5. In this flow path switching pipe P5, the inner pipe 51 is rotated in the circumferential direction with respect to the outer pipe 41, and the first opening 53 of the inner pipe 51 is made to be the first of the outer pipe 41 as shown in FIG. By corresponding to the outlet 43, the first flow path state in which the water W flowing in from the inlet 42 flows out from the first outlet 43, and the second opening of the inner pipe 51 as shown in FIG. 54 is made to correspond to the second outlet 44 of the outer pipe 41 so as to be switchable between the second flow path state in which the water W flowing in from the inlet 42 flows out from the second outlet 44. Yes.

  A flow path switching pipe P6 of the third modified example shown in FIG. 15 has first and second outlets 43 and 44 formed in the axial direction on the peripheral wall of the outer pipe 41, and at the end of the outer pipe 41. An inflow port 42 is formed. An inner pipe 51 is inserted into the outer pipe 41 so as to be slidable in the axial direction. The inner pipe 51 has a single opening 52 for both the first and second use. In this flow path switching pipe P6, the inner pipe 51 is slid along the axial direction with respect to the outer pipe 41, and the opening 52 of the inner pipe 51 is formed in the outer pipe 41 as shown in FIG. By corresponding to the first outlet 43, the first flow path state in which the water W flowing in from the inlet 42 flows out from the first outlet 43, and the opening of the inner pipe 51 as shown in FIG. 52 is made to correspond to the second outlet 44 of the outer pipe 41 so as to be switchable between the second flow path state in which the water W flowing in from the inlet 42 flows out from the second outlet 44. Yes.

  In this flow path switching pipe P6, the inner pipe 51 is simply slid in the axial direction with respect to the outer pipe 41. However, the present invention is not limited thereto. For example, a male screw is formed on the outer peripheral surface of the inner pipe 51, and A female screw may be formed on the inner peripheral surface of the outer pipe 41, and the inner pipe 51 may be screwed into the outer pipe 41 for attachment. Then, the first and second outlets 43 and 44 may be appropriately opened and closed by sliding the inner pipe 51 in the axial direction by screwing (rotating) the outer pipe 41.

  In the above embodiment, the flow path switching pipe has been described with an example in which one inlet is formed and two outlets are formed. However, in the present invention, the flow path switching pipe (flow path switching) The number of inlets and the number of outlets of the apparatus are not limited. For example, two or more inflow ports of the flow path switching pipe may be formed, or three or more outlets may be formed. When three or more outlets are formed, two or more outlets may be opened at the same time, or each outlet may be opened individually. Similarly, the number of openings formed in the inner pipe is not limited, and three or more openings may be formed.

  Needless to say, in the present invention, the positions of the inlet and the outlet are not particularly limited, and may be formed at any position. For example, the outlet may be formed at the end of the outer pipe.

  In the present invention, the pipe flow path around the water tank is not limited to that of the above embodiment, and the pipe flow path of the present invention may be any pipe-shaped (tubular) flow path disposed around the water tank. It may be a thing.

  The flow path switching device for an ornamental water tank of the present invention can be used for an ornamental water tank used in general households and the like.

41: Outer pipe 42: Inlet 421: Pipe-shaped joint 43: First outlet 431: Pipe-shaped joint 44: Second outlet 441: Pipe-shaped joint 50: Water inlet 51: Inner pipe 52: Opening 53: First opening 54 : Second opening A: Water tanks P1 to P6: Channel switching pipe (channel switching means)
W: Water

Claims (6)

An ornamental water tank switching device attached to a pipe channel around the water tank,
An outer pipe having first and second outlets formed in a manner penetrating the peripheral wall;
The outer pipe is disposed in a state of being movably accommodated with respect to the outer pipe, and includes an inner pipe having an opening formed in a manner of penetrating the peripheral wall,
An inlet that communicates with the inner pipe is formed in the outer pipe,
The inner pipe is moved with respect to the outer pipe, the opening is made to correspond to the first outlet, and the second outlet is closed by the peripheral wall of the inner pipe, thereby allowing the inner pipe to pass through the inner pipe. A first flow path state in which water that has flowed in flows out through the opening and the first outlet, the opening corresponding to the second outlet, and the first outlet is closed by a peripheral wall of the inner pipe. The water is introduced into the inner pipe from the inflow port, and is configured to be switchable between a second flow path state in which the water flows out through the opening and the second outlet. Water tank flow switching device. The opening has first and second openings;
In the first flow path state, the first opening is arranged corresponding to the first outlet, and the second opening is arranged with a position shifted with respect to the second outlet,
In the second flow path state, the first opening is arranged with a position shifted from the first outlet, and the second opening is arranged corresponding to the second outlet. The flow path switching device for an ornamental water tank according to claim 1.   The flow path switching device for an ornamental aquarium according to claim 1 or 2, wherein the flow path is switched by rotating the inner pipe around the axis with respect to the outer pipe.   The operation part for moving and operating an inner pipe is fixed to the front-end | tip of the said inner pipe, The operation part is arrange | positioned in the state protruded to the front end side from the front-end | tip of the said outer pipe. The flow path switching device for an ornamental water tank according to the item.   The inflow port is provided at a proximal end of the outer pipe, and the inside of the inner pipe communicates with the outside of the outer pipe via the inflow port and a proximal end side opening of the inner pipe. The flow path switching device for an ornamental water tank according to any one of -4. The pipe-shaped joint for connecting another pipe is provided in at least any one of the inflow port and the first and second outlets in the outer pipe so as to protrude outward . The flow path switching device for an ornamental water tank according to any one of 5 .

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