JPH0478249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a simple hydroponic cultivation device mainly for home use.

Conventional Technologies and Problems In recent years, hydroponic cultivation has become popular as a form of plant cultivation that does not require land. To perform hydroponic cultivation, a plant cultivation bed is provided in a cultivation tank, the desired plants are planted, and water containing nutrients is constantly circulated within the cultivation tank.
It is necessary to supply the roots with sufficient oxygen and nutrients. Therefore, this method requires a large space and complicated circulation equipment, and is not suitable for easy and enjoyable use in ordinary homes. Even if the conventional method described above is scaled down, in this planar circulation method, if many plants are planted in a cultivation tank, the water flow may become stagnant and sufficient oxygen may not be supplied to the roots. Furthermore, if a cultivation tank is too deep, it will be difficult for water to replace the top and bottom, and if it is too shallow, roots will not be able to grow sufficiently. As described above, since there has been no effective simple hydroponic cultivation device, at home, plants have been grown by placing a suitable plant cultivation bed in an aquarium filled with water, but with this method, In order to prevent the water from rotting and to supply sufficient oxygen to the roots, the water must be replaced frequently, which is not only time-consuming but also wasteful as fertilizer is thrown away.

Therefore, it has been desired to develop a simple and effective plant cultivator that can easily carry out hydroponic cultivation at home and grow necessary plants.

Means for Solving the Problems The present inventors have conducted extensive research in order to solve the above problems, and found that if the nutrient solution in the cultivation tank is once pumped upward and then returned to the cultivation tank, the nutrient solution They discovered that it is possible to create an effective hydroponic cultivation device with a small-scale device because it can increase the aeration effect of water, distribute air evenly to the nutrient solution in the cultivation tank, and increase the amount of dissolved oxygen. , we have completed the present invention.

That is, the present invention provides a hydroponic cultivation device characterized in that a cultivation tank is provided with a hollow cylinder having a water spout at the top, a water intake at the bottom, and a pumping blade rotatably installed therein. This is what we provide.

The main parts of the hydroponic cultivation device of the present invention will be explained according to the drawings. The cultivation device includes a plant cultivation bed 11 for planting plants, a nutrient solution (liquid fertilizer, and a cultivation solution containing a disinfectant if desired). ) A hollow cylinder 2 is installed upright for aerating the nutrient solution and supplying sufficient oxygen to the cultivation tank 10 containing the nutrient solution. A motor 1 is installed in the hollow cylinder 2.
A pumping blade 4 that is rotatable and connected to the cultivation tank 10 is installed inside the cultivation tank, and the nutrient solution in the cultivation tank 10 is pumped up from a water inlet 6 opened at the bottom and is discharged from a water spout 7 opened at the top. There is. The discharged nutrient solution is basically aerated while flowing down from the spout 7 at the top of the hollow cylinder 2 to the level of the nutrient solution. However, a saucer 8 is provided below the spout 7, and the saucer 8
A water bottle 9 may be suspended from the tank, and the water pumped up by the pumping blades 4 may be temporarily stored in the saucer 8 and then returned to the cultivation tank 10 through the water bottle 9. Although the water tank 9 may be a cylindrical body made of plastic, a cylindrical body processed into a mesh shape is more preferable in terms of the aeration effect. The height of the hollow cylinder 2 is determined so that the contact time between the nutrient solution and the air is sufficient. The shape and size of the cultivation tank 10 are not limited, and plastic containers used for other purposes can be used as they are. Furthermore, the shape and material of the plant cultivation bed 11 are not particularly limited, and may be either a type used by floating on the liquid surface of the cultivation tank 10 or a type used by submerged in the cultivation tank 10. ,
When trying to grow plants with elongated roots, a floating type is preferred. Since the aeration effect of the hydroponic cultivation device of the present invention is extremely efficient regardless of the depth of the cultivation tank, it can be said to be particularly suitable for growing plants with elongated roots.

Function Since the hydroponic culture device of the present invention is configured as described above, when the plant cultivation bed 11 and the nutrient solution for cultivation are placed in the cultivation tank 10 and the motor 1 is started, the water pumping blades 4 rotate. Nutrient solution is pumped up from the water inlet 6 of the hollow cylinder 2, and water is spouted from the water outlet 7 to the cultivation tank 10.
returned inside. In this case, as in the illustrated embodiment, if a saucer 8 is provided below the spout 7 and a water bottle 9 is suspended from the saucer 8, the pumped up nutrient solution is temporarily stored in the saucer 8 and then transmitted through the water bottle 9. It reaches the water surface relatively slowly and mixes with the nutrient solution in the cultivation tank 10. When the water tank 9 is formed into a mesh-like cylinder, the nutrient solution flows over time as if threading between the meshes. In any case,
The nutrient solution containing air once sinks below the liquid surface and mixes with the solution in the cultivation tank 10, and is then placed on the plant cultivation bed 1.
Supplying oxygen to the roots of plant a planted in 1,
This will promote its growth.

Hereinafter, the present invention will be explained in more detail with reference to Examples.

Embodiment The figure shows an embodiment of the present invention, 1
is a motor, which is fixed to the hollow cylinder 2. A pumping blade 4 rotatably connected to the motor 1 via a pump shaft 3 is installed inside the hollow cylinder 2 . The hollow cylinder 2 is erected on a pedestal 5 and can be moved together with the pedestal 5.
A water intake port 6 is opened at the bottom of the hollow cylinder 2, and a water spout 7 is opened at the top, and a saucer 8 is provided around the bottom of the water spout 7. This saucer 8 has a large opening facing upward so that it can receive the nutrient solution discharged from the spout 7. 9 is a water bottle,
The upper edge part is locked to the saucer 8, and the lower edge is attached to the cultivation tank 1.
0 nutrient solution is supported so as to be located below the liquid level. The water bottle 9 may be a plate-shaped cylinder, but if it is formed into a mesh shape, the liquid overflowing from the saucer 8 will not only flow down both the front and back sides of the water bottle 9, but will also receive resistance between the meshes, and the air This increases the contact area with the air, further increasing the aeration effect. These saucer 8 and water bottle 9 may be integrated.

Reference numeral 11 denotes a plant cultivation bed, which is formed into a donut shape by making a hole for inserting the hollow tube 2 in the center of a plate made of a plastic plate having closed cells, such as polystyrene or polyolefin, and having a low specific gravity. A number of pot-shaped seedling support parts 12, 12, 1
2 is provided so as to penetrate therethrough. This seedling support part 12
The bottom is formed narrowly so that the plant a whose roots are supported within the sponge body 13 made of polyurethane or the like can be supported in the sponge body 13 as it is. In addition,
If a gap is provided in this seedling support portion 12 so that the sponge body 13 cannot enter, and an air hole (not shown) is opened, sufficient air can be provided even when the stem and roots of the plant a grow thick. Since the rhizomes below the seedling support part 12 can also sufficiently come into contact with the air, there is no fear that the growth of the plant a will be inhibited, which is convenient.

As described above, the hydroponic cultivation device of the present invention can use a bucket in an ordinary household or various containers in a farmhouse as a cultivation tank, but if a container equipped with a drainage hose 14 is used, the nutrient solution can be It is convenient for replacing.

Effects According to the present invention, the solution is pumped up to the top of the hollow cylinder and returned to the cultivation tank again, so it has a long contact time with air, and the contact area is wide, so the aeration effect is extremely high, and it can be used with small-scale equipment. An effective hydroponic cultivation device can be obtained, and hydroponic cultivation can be easily carried out in a narrow space at home.

In addition, when the present invention is used, when the pumped nutrient solution returns to the cultivation tank, it sinks below the nutrient solution level and is then mixed. Even if the roots are dense, the nutrient solution containing air can be distributed throughout the cultivation tank, making it possible to hydroponically cultivate many plants in one cultivation tank.

Furthermore, according to the present invention, even if the cultivation tank is deep, a sufficiently aerated nutrient solution is circulated to the bottom, so plants with long roots can be easily grown hydroponically.

Furthermore, according to the present invention, hydroponic cultivation can be easily enjoyed using a suitable container that is used in everyday life.

Furthermore, according to the present invention, the fertilizer and disinfectant in the nutrient solution can be distributed evenly by circulating and used effectively, and hydroponic cultivation can be carried out economically without waste.

Furthermore, according to the present invention, by installing a saucer and a water bottle, it is possible to further enhance the aeration effect and at the same time suppress foaming even when a disinfectant containing a surfactant is used. It does not spoil the appearance even on a balcony or the like.

[Brief explanation of the drawing]

The figure is a longitudinal sectional view of a hydroponic cultivation device according to an embodiment of the present invention. The symbols in the figure are explained as follows. 1 is the motor, 2 is the hollow cylinder, 3 is the pump shaft, 4
is a pumping blade, 5 is a pedestal, 6 is a water inlet, 7 is a water outlet,
8 is a saucer, 9 is a water bottle, 10 is a cultivation tank, 11 is a plant cultivation bed, 12 is a seedling support part, 13 is a sponge body,
14 is the drainage hose.

Claims (1)

[Claims] 1. Hydroponic cultivation characterized in that a cultivation tank is provided with a hollow cylinder having a water spout at the top, a water intake at the bottom, and a pumping blade rotatably installed therein. vessel. 2. The hydroponic cultivation device according to claim 1, characterized in that a saucer is provided below the spout of the hollow cylinder, and a water bottle is suspended from the saucer to the cultivation tank. 3. The hydroponic cultivation device according to claim 1 or 2, characterized in that a plant cultivation bed is suspended in the cultivation tank.