JP6257984B2 - Floating tank - Google Patents

Description

  The present invention relates to an aquarium for breeding ornamental fish, and more particularly to an aquarium that allows an ornamental fish to swim above the surface of a lower aquarium.

  Conventionally, various inventions have been proposed in which an upper water tank is provided for swimming ornamental fish above the surface of the lower water tank.

  In FIG. 1 of Patent Document 1, an upper water tank (2) on a cylinder is installed in a lower water tank (1), and the air in the upper water tank (2) is filled by removing air from the upper water tank (2). An example of constructing an upper and lower two-stage water tank is disclosed. FIG. 2 of Patent Document 2 discloses an example in which a rectangular parallelepiped upper water tank (9) is fixed to the side surface of the lower water tank (8) to construct an upper and lower two-stage water tank.

  In Patent Document 2, a movable closed water tank (202) is provided in an open air tank (100), and the upper and lower two-stage water tanks are formed by extracting air from the upper part of the closed water tank (202). An example of constructing is disclosed.

  Patent Document 3 discloses an example in which a water tank using a columnar container (A) is constructed on the general container (2) by fixing the columnar container (A) to the side surface or bottom surface of the general container (2). ing.

  In Patent Document 4, an ornamental fish passes from one main water tank (12) to the sub water tank (14) by removing air from the sub water tank (14) provided to straddle the two main water tanks (12). A water tank that can swim to the other main water tank (12) is disclosed.

  Patent Document 5 discloses a water tank in which a columnar container (1) is filled with water so that fish can also travel to the upper container (1).

  Patent Document 6 discloses a water tank in which a float (14a, 14b) is attached to a body pipe (11) bent in a substantially inverted U shape so that the body pipe (11) filled with water floats on the water surface. ing.

JP 2000-308431 A JP 2009-189361 A Utility model registration No. 3092672 JP-A-8-242726 Japanese Patent Laid-Open No. 11-308940 JP 2005-137280 A

  In many cases, the person who keeps the aquarium fish has an aquarium in use (typically a transparent rectangular parallelepiped shape). For this reason, there is a need to enjoy enjoying the aquarium fish in the upper aquarium using the current aquarium without purchasing a new aquarium. Since the water tank of FIG. 1 of patent document 1 must be newly purchased clearly, it is unsuitable for such a need. Moreover, even if it is the water tank of FIG. 2 of patent document 1, since the upper water tank must be fixed to the side surface of a lower water tank, the size of a water tank will be selected. In addition, in the case of the water tank of FIG. 2 of Patent Document 1, when air enters the upper water tank at any moment, water in the air moves to the lower water tank, but the free capacity of the lower water tank is larger than the capacity of the upper water tank. If the amount is too small, the water will overflow outside the aquarium. The same can be said for the water tank of FIG. Therefore, in the case of the water tank of patent document 1, the empty part which is not filled with water must be provided in a lower water tank, and it may impair the beauty | look by the water surface of a lower water tank falling.

  Since the water tanks of Patent Documents 2, 3, and 5 are movable, they can be installed as separate bodies in the currently owned water tanks. A part must be provided. As for the water tank of Patent Document 4, the two main water tanks must be provided with empty portions that are not filled with water by the capacity of the auxiliary water tank. Also for the water tank of Patent Document 6, an empty part must be provided in the lower water tank by the capacity of the main body pipe. As described above, in any conventional water tank, it is necessary to provide a space in the lower water tank corresponding to the capacity of the upper water tank. For example, if the lower tank is filled with water, the upper tank is immersed in the water surface, the air in the upper tank is vented with a pump, etc., and the water in the lower tank is transferred to the upper tank A space corresponding to the capacity of the upper water tank can be provided in the lower water tank.

  However, in such an upper and lower two-stage water tank, if the upper portion is to be enlarged, the water in the lower portion is naturally reduced, and the water surface in the lower portion is lowered. The state where the water surface of the lower part is lowered is not absolutely beautiful for appreciation. Of course, it is possible to raise the water level of the lower tank by devising it so that air never enters the upper tank, but it can be guaranteed that air will never enter the lower tank. Moreover, since the weight of the water in the upper tank is also applied to the lower tank, the load capacity of the lower tank may be exceeded.

  Further, in the case of a water tank with a floating body as in Patent Document 6, in order to generate a buoyancy sufficient to float the upper water, a floating body that is approximately equal to the capacity of the upper water must be attached to the upper water tank. Such a floating body becomes larger as the upper tank is made larger. Therefore, the floating body is too big, and it cannot be said that it is beautiful for appreciation.

  As described above, the conventional two-stage water tank has a problem that the liquid level of the lower water tank falls. Furthermore, the two-stage water tank of the type that floats the floating body on the water surface has a problem that the floating body becomes large and becomes conspicuous. Therefore, in order to solve these two problems, an object of the present invention is to provide a floating water tank in which the liquid level of the lower water tank does not drop and the floating body is not conspicuous.

  In order to solve the above problems, the present invention has the following features. The present invention is a water tank with a floating body separate from the lower water tank, and has a water tank part having an opening that can be immersed in the water surface of the lower water tank containing water, and the water tank part directly below the opening part. In order to be able to stand independently so that it can move to any position in the lower water tank, gravity when the water tank is filled and the buoyancy of the floating body part are provided. With adjusted features.

  Preferably, the cross-sectional shape in the vertical vertical direction of the water tank portion is a shape that includes a substantially trapezoidal shape such that the upper base is smaller than the lower bottom, and the cross-sectional shape of the floating body portion is also higher than the lower bottom It may be a shape that encloses a substantially trapezoidal shape that is small.

  Preferably, the inside of the floating body portion is hollow, and the internal volume of the water tank portion may be larger than the internal volume of the floating body portion.

  Preferably, the inside of the floating body portion is hollow, and the floating body portion may include an air vent plug.

  Preferably, the water tank part is semi-spherical, and the floating body part is composed of a column part and a base part that are connected vertically downward from a substantially upper center of the water tank part.

  Preferably, a height adjusting means for adjusting the height of the opening is provided.

  As another embodiment, buoyancy may be generated in the floating body part by drawing air into the floating body part containing water while removing air from the water tank part.

  At this time, preferably, the bottom surface of the floating body portion has an opening, and buoyancy is generated in the floating body portion by drawing air from the opening portion of the floating body portion while drawing air from the opening portion of the water tank portion. Good.

  Preferably, a first pipe part for extracting air from the opening part of the water tank part and a second pipe part for introducing air from the opening part of the floating body part may be included.

  Further, preferably, after the air is extracted from the floating body portion and the floating body portion is submerged in the lower water tank, the buoyancy is generated in the floating body portion by introducing air into the floating body portion while releasing the air from the water tank portion. .

  Preferably, the floating body part has a leg part, and further includes an additional leg part for increasing the height of the leg part.

  According to the present invention, since the floating body portion is located directly below the opening, and the floating body portion enters below the water surface of the lower water tank, water corresponding to the volume of the floating body portion is transferred to the water tank portion. . Therefore, an upper and lower two-stage water tank that supplies water to the water tank portion can be provided without lowering the water surface of the lower water tank. Furthermore, since the floating body portion is located below the water surface of the lower water tank, the floating body portion is not conspicuous unlike the conventional water tank in which the floating body portion is floating. Gravity and buoyancy are adjusted so that the water tank with a floating body itself can stand independently so as to be movable to an arbitrary position. Since it can move to any position, a two-stage water tank can be constructed with a preferred arrangement according to the arrangement of the lower water tank.

  If the cross-sectional shapes of the water tank part and the floating body part are formed so as to include a substantially trapezoidal shape, the water tank with a floating body can be stably made independent. If the inside of the floating body portion is hollow and the inner volume of the water tank portion is larger than the inner volume of the floating body portion, the floating body portion can be made stable and independent. If the floating body is provided with an air vent plug, when removing the floating water tank from the lower water tank, the water surface of the lower water tank will be greatly shaken if the stopper is removed and the air in the floating body is transferred to the water tank section. Without removing the floating tank.

  If a semicircular spherical water tank part is used, a floating water tank with an impression different from the substantially trapezoidal water tank part can be provided. In addition, if the column part and the base part are used as a floating body part with respect to the semicircular spherical water tank part, the gravity of the water tank part will be applied perpendicularly to the floating body part, so that the water tank with a floating body can be made to stand by itself stably. be able to.

  If the height adjusting means is provided, the floating water tank can be used without selecting the size of the lower water tank.

  In addition, if air is introduced into the floating body part containing water while venting air from the water tank part, buoyancy is generated in the floating body part. Therefore, it is possible to add water to the water tank portion without greatly shaking the water surface of the lower water tank. If an opening is provided on the bottom surface of the floating body portion, air can be easily introduced and removed from the opening portion of the floating body portion. For example, using a first pipe part for removing air from the water tank part and a second pipe part for removing air from the floating body part, water is introduced into the water tank part with a simple configuration, and air is introduced into the floating body part. It becomes possible. As a procedure, use the second pipe part to evacuate the air from the floating body part, or open the plug to evacuate the air from the floating body part. By putting air into the floating body part, buoyancy can be generated in the floating body part, and water can be put into the water tank part. If a leg is added, the bottom of the opening of the floating body can be made shallow, and a protected area for larvae can be created.

  These and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

FIG. 1 is a perspective view of a water tank 1 with a floating body according to an embodiment of the present invention. FIG. 2 is a vertical cross-sectional view of the floating tank 1 with a floating body. FIG. 3 is a perspective view showing a state where the floating body-equipped water tank 1 is installed in the lower water tank 5. It is a figure which shows the water tank 1 with the floating body which provided the stopper 6 for venting air. It is a figure which shows a mode when the stopper 6 is removed. FIG. 6 is a perspective view showing a floating water tank 11 according to another embodiment of the present invention. FIG. 7 is a diagram showing a state when the floating body-equipped water tank 21 according to another embodiment of the present invention is installed. FIG. 8 is a view showing the structure of the intake / exhaust device 41 used when the floating tank 21 is installed. FIG. 9 is a schematic cross-sectional view showing a state when the floating body 31 is submerged. FIG. 10 is a schematic cross-sectional view showing the state of the initial stage when the water tank 2 is filled with water. FIG. 11 is a schematic cross-sectional view showing a state where the water tank 2 is filled with water and the floating body 31 is filled with air. FIG. 12 is a perspective view showing the structure of the additional leg 11.

  FIG. 1 is a perspective view of a water tank 1 with a floating body according to an embodiment of the present invention. The floating water tank 1 includes a water tank part 2 and a floating body part 3. The water tank 1 with a floating body is manufactured with a transparent acrylic plate or the like as a whole. However, the material is not particularly limited, and may be translucent or colored without being transparent. FIG. 2 is a vertical cross-sectional view of the floating tank 1 with a floating body. The water tank 2 has an opening 4 at the bottom. The floating body portion 3 is connected to the water tank portion 2 just below the opening. In FIG. 2, the position of the water surface is represented by a virtual line.

  FIG. 3 is a perspective view showing a state where the floating body-equipped water tank 1 is installed in the lower water tank 5. Here, the example of the installation method of the water tank 1 with a floating body is demonstrated. First, water is put into the lower water tank 5. And the floating body water tank 1 is put in the lower water tank 5, the floating body water tank 1 is brought down, and the water tank part 2 is filled with water. When the water tank 2 is filled with water, the floating water tank 1 is raised so that air does not enter the water tank 2. At this time, if the amount of water initially placed in the lower water tank 5 is small, it will not be immersed in the water surface of the lower water tank 1 of the opening 4, so that the air enters the water tank part 2 and cannot be installed. In such a case, the amount of water in the lower water tank 1 is increased and the same operation is performed again, so that the water tank section 2 is filled with water and the floating water tank 1 is raised. On the contrary, if there is too much water in the lower water tank 5, the buoyancy by the floating body part 3 becomes larger than the gravity by the water in the water tank part 2, and the water tank 1 with the floating body does not stand by itself. In such a case, the water in the lower water tank 5 is reduced, or the height of the opening 4 is increased by the height adjusting means described later.

  The gravity when the water tank section 2 is filled with water and the buoyancy generated when the floating body section 3 is immersed in the lower water tank 5 are adjusted so that the floating water tank 1 is self-supporting. Specifically, when the weight of the water of the content integral of the water tank unit 2 is X gram, the total weight of the floating tank 1 is Y gram, and the buoyancy generated by the floating body 3 is Z gram weight, Z <X + Y It is good that the relationship is established. When the weight of the tank 2 and the tank 1 with a floating body that is full of water becomes larger than the buoyancy, gravity is added to the lower water tank 5 by the difference between the buoyancy and the whole weight, and the floating tank is attached. The water tank 1 will stand independently with respect to the lower water tank. How much the overall weight is larger than the buoyancy is appropriately designed.

  In the present invention, in order to generate buoyancy in the floating body 3, the floating body 3 is made hollow. In such a case, what is necessary is just to make the internal volume of the water tank part 2 larger than the internal volume of the floating body part 3. FIG. In addition to air, foamed polystyrene or the like may be used as a floating body.

  However, simply by adjusting the relationship between the weight and buoyancy of the floating-body tank 1 when it is full, the floating-water tank 1 cannot stably stand by the lower water tank 5. The shape of the water tank portion 2 and the shape of the floating body portion 3 are important in order to make the water tank with floating body movable to an arbitrary position of the lower water tank 5 in order to make it stand by itself stably. As a result of trial and error, the inventor preferably has a substantially vertical trapezoidal shape in which the upper bottom is smaller than the lower bottom, as shown in FIG. Thus, it was confirmed that the cross-sectional shape of the floating body 3 is preferably the same shape. With such a shape, the floating body-equipped water tank 1 can stably stand by itself inside the lower water tank 5 without falling down in the front-rear and left-right directions. In addition, having described as substantially trapezoid shape means that the upper part of the water tank part 2 may be curving. That is, it is sufficient if the cross-sectional shape includes a substantially trapezoidal shape. Moreover, the side surface of the water tank part 2 may be curved. The shape is not limited to the shape shown in FIG.

  As shown in FIG. 3, since it is thought that the water for the volume of the floating body part 3 has moved to the water tank part 2, even if the water in the water tank part 2 returns to the lower water tank 5, the water tank part 5 is empty. Since water only moves to the capacity portion, water does not overflow from the lower water tank 5.

  As can be seen from the configuration of the floating tank 1, if the height of the opening 4 is a little lower than the height of the lower tank 5, the water tank can be used without lowering the water level of the lower tank 5. Part 2 can be filled with water. There are some standards for the height of the lower water tank 5, but there are variations. Therefore, when putting the floating water tank 1 into practical use, the floating water tank 1 in which the height of the opening 4 is adjusted according to the height of the lower water tank 5 must be provided. Naturally, a plurality of types of floating tank 1 may be manufactured, but if the general purpose is to some extent, the floating tank 1 is provided with a height adjusting means for adjusting the height of the opening 4. It is good to do so. For example, a box-shaped base for adjusting the height may be attached to the bottom of the water tank 1 with a floating body. Conversely, a height adjustment base may be placed on the bottom of the lower water tank 5, and the floating body-equipped water tank 1 may be placed on the base.

  In addition, you may make it attach to a weight to the water tank 1 with a floating body, and to be able to stand stably stably.

  Next, a case where the floating body-equipped water tank 1 is removed from the lower water tank 5 will be described. Of course, if the water tank 1 with a floating body is knocked down, the water tank 1 with a floating body can be easily taken out, but if you do so, the water in the water tank part 2 will be liked, and the water in the lower water tank 5 will be shaken greatly. And there is a possibility that the water will overflow. Therefore, it is conceivable that an exhaust pump is inserted into the water tank part 2 so that air gradually enters the water tank part 2 and the water in the water tank part 2 is transferred to the lower water tank 5. In addition, as shown in FIG. 4, the removable plug 6 may be attached to the air vent hole provided in the floating body 3. As shown in FIG. 5, when the plug 6 is removed, water enters the floating body 3, and the air in the floating body 3 gradually leaks out, and the air gradually enters the water tank 2. As a result, the water in the water tank section 2 is lost. Thereafter, even if the floating water tank 1 is tilted, the water surface is not greatly shaken, so the floating water tank 1 can be removed safely. In addition, since the water tank 1 with a floating body may lose balance in the middle of removing the stopper 6, it is good to push the water tank 1 with a floating body by hand.

  FIG. 6 is a perspective view showing a floating water tank 11 according to another embodiment of the present invention. As shown in FIG. 6, the floating body-equipped water tank 11 includes a hemispherical water tank section 12, and a floating body section 13 including a column section 13 a and a base section 13 b that are connected vertically downward from the upper center of the water tank section 12. With. The lower part of the water tank 12 is an opening 14. The opening 14 has a height that immerses into the water surface of the lower water tank 5. Also in the water tank 1 with a floating body, gravity when the water tank section 12 is filled with water and the buoyancy of the floating body section 13 are adjusted so that the water tank section 12 can stand independently so as to be movable to an arbitrary position in the lower water tank. Yes. Also in the water tank 1 with a floating body, it is preferable to provide a height adjusting means and a stopper for venting air. Even if it is a structure like the water tank 11 with a floating body, it becomes stable independently.

  As described above, according to this embodiment, a floating water tank is selected so that the height of the opening matches the height of the water surface of the lower water tank, or the height of the floating water tank is adjusted by the height adjusting means. If it carries out, it will become possible to construct | assemble an upper stage water tank by a water tank part, without lowering the water surface of a lower stage water tank. In addition, since the volume of water in which the floating body part is in the lower water tank is transferred to the water tank part, the load on the lower water tank is hardly changed even if the two-stage water tank is used. Therefore, even if a floating water tank is installed, it can withstand the load resistance of the lower water tank. Since the floating body portion is connected to the water tank portion directly below the opening, the floating body portion does not float and stand out on the water surface. For example, if the floating body is made of a hollow transparent body, a landscape that is not different from the state where water is contained in the lower tank can be maintained, and the aesthetics are not impaired in view.

  FIG. 7 is a diagram showing a state when the floating body-equipped water tank 21 according to another embodiment of the present invention is installed. First, the structure of the floating tank 21 will be described. Unlike the embodiment shown in FIGS. 1, 4, and 6, the bottom surface of the floating body 31 is open. Legs 10 are provided at the four corners of the opening 7. A U-shaped pipe 8a fastened by a suction cup 8b is provided on the outer surface of the floating body 31. An intake / exhaust pipe 8 is attached to one end of the U-shaped pipe 8a. The intake / exhaust pipe 8 is inserted into the water tank 2 through the opening 4 so as to reach the upper part of the water tank 2. The U-shaped pipe 8a is bent so that the other end faces upward.

  The lower water tank 5 is provided with a U-shaped pipe 9a fastened by a suction cup 9b, and an intake / exhaust pipe 9 is attached to one end of the U-shaped pipe 9a. The intake / exhaust pipe 9 is inserted into the floating body 31 through the opening 7 so as to reach the upper part of the floating body 31. The U-shaped pipe 9a is bent so that the other end faces upward. The shapes of the U-shaped pipes 8a and 9a are merely examples, and any structure may be used as long as an exhaust pipe 14 and an intake pipe 15 described later can be connected.

  FIG. 8 is a view showing the structure of the intake / exhaust device 41 used when the floating tank 21 is installed. FIG. 9 is a schematic cross-sectional view showing a state when the floating body 31 is submerged. FIG. 10 is a schematic cross-sectional view showing the state of the initial stage when the water tank 2 is filled with water. FIG. 11 is a schematic cross-sectional view showing a state where the water tank 2 is filled with water and the floating body 31 is filled with air. Hereinafter, a method for installing the floating body-equipped water tank 21 in the lower water tank 5 will be described with reference to FIGS.

  The intake / exhaust device 41 includes an intake / exhaust pump 12, an exhaust pipe 14, and an intake pipe 15. The intake / exhaust pump 12 has an intake function and an exhaust function. An exhaust pipe 14 is connected to an exhaust port of the intake / exhaust pump 12 via a hose. An intake pipe 15 is connected to an intake port of the intake / exhaust pump 12 via a hose. The intake / exhaust pump 12 may be a manual pump or an electric pump. When the intake / exhaust pump 12 is driven, air is sucked from the intake pipe 15 and air is discharged from the exhaust pipe 14.

  When installing the floating tank 21, first, the intake pipe 15 of the intake / exhaust device 41 is fitted into the U-shaped pipe 9a and connected. Then, the suction cup 9b is attached to an appropriate position so that the intake / exhaust pipe 9 is inserted from the opening 7 as shown in FIG. Thereafter, the intake / exhaust pump 12 is driven, and the air in the floating body 31 is sucked through the intake / exhaust pipe 9 and the intake pipe 15 and discharged to the outside. As a result, the air in the floating body 31 is removed and replaced with the water in the lower water tank 5, and the water tank 21 with the floating body is submerged so as to descend substantially vertically into the lower water tank 5. It is also possible to submerge the floating body 31 without using the intake / exhaust device 41. For example, the plug 6 is opened, the air in the floating body 31 is removed, and water is directly put into the floating body 31. The floating body 31 may be submerged, and then the stopper 6 may be closed again to generate buoyancy in the floating body 31 by the following method.

  When the floating body 31 is submerged, as shown in FIG. 10, the opening 4 of the water tank 2 is sealed with the water surface, and the buoyancy is felt. At this stage, the intake pipe 15 is removed from the U-shaped pipe 9a, and is fitted into and connected to the U-shaped pipe 8a. Then, the intake / exhaust pump 12 is driven again. As a result, the air in the water tank 2 is discharged to the outside and replaced with the water in the lower water tank 5, so that water enters the water tank 2 and buoyancy does not occur.

  When buoyancy does not occur, the connection between the intake pipe 15 and the U-shaped pipe 8a is left as it is, and the exhaust pipe 14 is further fitted into the U-shaped pipe 9a and connected. Then, the intake / exhaust pump 12 is driven again. As a result, as shown in FIG. 11, the air in the water tank 2 is sucked and replaced with the water in the lower water tank 5, and the water level rises. Further, the sucked air is discharged to the floating body 31 and inside the floating body 31. Is filled with air, and the water level in the floating body 31 is lowered. At this time, the water level in the lower water tank 5 does not change at the same position. In this way, buoyancy can be generated in the floating body 31 by introducing air from the opening 7 of the floating body 31 while introducing water while removing air from the opening 4 of the water tank 2. When the gravity when the water tank 2 is filled with water and the buoyancy of the floating body 31 are adjusted to an appropriate balance, the floating water tank 21 is well-balanced and a two-stage water tank is provided. It becomes.

  If air remains in the upper part of the water tank part 2, the exhaust pipe 14 installed in the floating body part 31 is removed from the U-shaped pipe 9 a and the intake / exhaust pump 12 is driven. It can be further raised. However, when the water level of the lower water tank 5 falls below the opening 4, it is necessary to additionally flow water into the lower water tank 5 from the outside. It is possible to remove at least the suction cup 8b and the intake / exhaust pipe 8 after installation.

  FIG. 12 is a perspective view showing the structure of the additional leg 11. As shown in FIG. 12, the floating body tank 21 is formed by fitting the extension leg 11 having the convex 11 a at the center to the leg 11 having the concave part 10 a at the center provided at the four corners of the floating body 31. It is preferable that the installation height can be adjusted even when the water level of the lower water tank 5 is high. If the leg 11 is not inserted, the bottom of the opening 7 of the floating body 31 is shallow, and it is difficult to swim except for the larvae by laying the sand, so that the larvae cannot be eaten by the parent fish. It becomes.

  In the embodiment shown in FIG. 7, without floating the water tank 21 with the floating body, the water tank 21 with the floating body is submerged vertically, the air is drawn from the water tank portion 2, and water is poured into the floating body portion 31. Can be put. By adjusting the amount of water to be put in the water tank part 2 and the amount of air to be put in the floating body part 31, the gravity when the water tank part 2 is filled with water and the buoyancy of the floating body part 31 can be adjusted. Inside, the floating body-attached water tank 21 can be made to move independently at an arbitrary position. If the floating-equipped water tank 21 is used, it can be slowly installed in the lower water tank 5 without greatly shaking the water surface of the lower water tank 5. In addition, the opening part 7 provided in the floating body part 31 may be provided only in a part of the bottom surface. In other words, in the invention according to this embodiment, the structure described in the present specification can be used as long as the structure can generate buoyancy in the floating body part by drawing air from the water tank part and introducing air into the floating body part. It is not limited.

  Although the present invention has been described in detail above, the above description is merely illustrative of the present invention in all respects and is not intended to limit the scope thereof. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

  This invention is a water tank with a floating body, and can be utilized industrially.

1,11,21 Water tank with floating body 2,12 Water tank section 3,13,31 Floating body section 4,14 Opening section 5 Lower water tank 6 Plug 7 Opening section 8,9 Intake / exhaust pipe 8a, 9a U-shaped pipe 8b, 9b Suction cup 10 Leg portion 10a Recessed portion 11 Additional leg portion 11a Convex portion 12 Intake / exhaust pump 13a Column portion 13b Base portion 14 Exhaust pipe 15 Intake pipe 41 Intake / exhaust device

Claims (6)

A tank with a floating body that is separate from the lower tank,
A water tank portion having an opening that can be immersed in the water surface of the lower water tank containing water;
A floating part provided in connection with the water tank part just below the opening part,
The vertical vertical cross-sectional shape of the water tank portion is a shape that includes a substantially trapezoidal shape such that the upper base is smaller than the lower base,
The floating body-attached water tank is characterized in that a cross-sectional shape of the floating body portion is also a shape including a substantially trapezoidal shape in which an upper base is smaller than a lower base . A tank with a floating body that is separate from the lower tank,
A water tank portion having an opening that can be immersed in the water surface of the lower water tank containing water;
A floating part provided in connection with the water tank part just below the opening part,
The inside of the floating body is a cavity,
The water tank with a floating body is characterized in that an internal volume of the water tank section is larger than an internal volume of the floating body section . A tank with a floating body that is separate from the lower tank,
A water tank portion having an opening that can be immersed in the water surface of the lower water tank containing water;
A floating part provided in connection with the water tank part just below the opening part,
The inside of the floating body is a cavity,
The floating body-attached water tank, wherein the floating body portion includes an air vent plug . A tank with a floating body that is separate from the lower tank,
A water tank portion having an opening that can be immersed in the water surface of the lower water tank containing water;
A floating part provided in connection with the water tank part just below the opening part,
The bottom surface of the floating body portion has an opening,
Floating force can be generated in the floating body part by drawing air from the opening part of the floating body part while drawing air from the opening part of the water tank part . Aquarium. A first pipe portion for extracting air from the opening of the water tank portion;
The water tank with a floating body according to claim 4 , further comprising a second pipe portion for introducing air from an opening of the floating body portion. The floating body portion has a leg portion,
The water tank with floating body according to any one of claims 4 and 5 , further comprising an additional leg for raising the height of the leg.

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