JPH071960Y2 - Hydroponics equipment - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a small hydroponic cultivation apparatus that can be used at home or the like.

[Conventional technology]

Recently, a small hydroponic cultivation device has been widely used for appreciation and practicality as well as changes in the living environment.

This device uses a cultivation tank made of synthetic resin or a tank made of synthetic resin foam, and is filled with a bed material made of a water-containing material, and while supplying a nutrient solution to the bed material, the bed material is placed on the bed material. It is a method for culturing a sowed seed, and is specifically proposed in, for example, Japanese Utility Model Publication Nos. 60-51969 and 60-160138.

In the hydroponic cultivation apparatus, the plant takes nutrients from the vicinity of the surface layer of the bed material until it reaches a certain size,
As the root grows, the root is extended inside the bed material, and finally the root is projected from the back surface of the bed material.

However, a general hydroponic cultivation apparatus adopts a method of supplying the nutrient solution from the upper surface of the bed material, and does not simply change the supply position according to the growth thereof.

In the early stage of plant growth, it is necessary to supply from the upper surface of the bed material. However, if it is supplied from the same place for a long period of time, the place where nutrients are needed changes with the growth of the plant, and in particular, the upper surface of the bed material is covered with the leaves of the grown plant and the sun becomes bad, and
Since the place where the nutrient solution is absorbed moves downward, the nutrient solution stays on the surface.

Therefore, microorganisms and pathogenic bacteria are generated on the upper surface of the bed material,
This causes plants to become ill and eventually die.

Moreover, when the growth of the plant progresses considerably, it is necessary to supply nutrients to the tip of the root protruding from the back surface of the bed material and to expose it to the air.

On the other hand, recently, even people who are unfamiliar with plant cultivation tend to perform hydroponics with both leaf recognition and practicality, but such a person is not good at considering the supply position of the nutrient solution. Often, the plants cannot be cultured until they are fully grown. Therefore, as described above, there is a demand for an apparatus that enables even a person who is not familiar with plants to easily perform culture.

The present invention changes the absorption location of the nutrient solution according to the growth process of the plant, dry the upper part of the bed material when the plant has grown to some extent, and supplies sufficient air from the tip of the root when the plant has grown further. The present invention provides a hydroponic cultivation device that can be used.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention is to fill the bed material with a gap between the bottom and the inside of the cultivation tank,
A part of the bed material is cut off, a small block is detachably attached to the cut portion, and a nutrient solution supply port is opened in the small block.

The present invention cuts off a part, preferably a part of a corner, instead of providing it integrally on the entire surface of a bed material cultivation tank, and detachably installs a small block on the cut part. It is configured to supply a liquid.

[Action]

By supplying the nutrient solution from the upper part of this small block with the small block attached to the bed material, the nutrient solution is concentratedly supplied from the surface layer of the bed material, and the nutrient solution is effectively supplied to the plants in the early stage of growth. can do. Further, when the plant has grown to some extent, the small blocks are removed and the nutrient solution is supplied from the lower layer side of the bed material, whereby the nutrient solution can be concentratedly supplied to the grown root portion to promote the growth of the plant. .

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a horizontal cross-sectional view of the main part of the hydroponic cultivation apparatus according to the present invention, and FIG. 2 is a plan view of the same, showing a space 3 between the bottom 2 and the culture tank 1 to contain water. Bed material 4 made of floor material is spread.

The culture tank 1 may be a synthetic resin molded product, a synthetic resin foam molded product, or a metal product coated with water resistant coating. Then, a plurality of ridges are formed in the longitudinal direction so that the bed material 4 is supported by opening a space from the bottom surface 2. The size and shape of the ridges are selected so that the nutrient solution supplied into the culture tank 1 can flow from one to the other.

The bed material 4 is an important material as a hydrous floor for cultivating plants, is a material that is less corrosive and hydrous, and, for example, a rock wool bed is suitable.

The shape of the bed material 4 is as shown in FIG.
The central portion of the corner contacting the side wall 1a is cut into a U-shape to form a cutout portion 4a, and the small block 4b is fitted in this portion. This small block 4b may be formed by cutting out a part of the bed material 4 itself and using the cut-out portion. Alternatively, a small piece of another material may be prepared and fitted into the cut-out portion 4a of the bed material 4. You may combine.

The side surfaces of the small blocks 4b are in contact with the cut surface of the bed material 4 as if they were one piece, so that the nutrient solution supplied to the small blocks 4b smoothly moves to the bed material 4 side. Need to be kept.

In this embodiment, a nutrient solution supply pipe 5 is provided from the bottom of the culture tank 1 to the inside, and the inside of the culture tank 1 penetrates the central portion of the small block 4b and opens on the upper surface thereof. The portion 5a is open.

FIG. 5 is a cross-sectional view showing a nutrient solution return pipe, which is a culture tank 1.
An O-ring 8 is fitted in an annular groove formed around a hole 7 provided in the bottom surface 2 of the, and a return pipe 9 is fitted so as to be vertically movable in a sealed state. An elongated hole 10 is opened in the upper portion of the return pipe 9.

The opening 9a at the end of the return pipe 9 is a portion where the nutrient solution overflows, and the height of the liquid surface of the nutrient solution is adjusted by adjusting the height of the return pipe 9 protruding from the bottom surface 2 while observing the scale 11. The height can be adjusted. The slot 10 has a bottom surface 2
The holes 10 are used so that the nutrient solution can be completely discharged. By completely discharging the nutrient solution in this manner, air can be introduced into the space 3 between the bottom surface 2 of the bed material 4 and air can be supplied to the root of the plant P.

1 and 2 show the initial stage of the growth of the plant P. Since the nutrient solution supply pipe 5 projects from the central portion of the small block 4b, it is discharged from the opening 5a of this supply pipe 5. The nutrient solution 6 is sprinkled on the small blocks 4b, penetrates into the small blocks 4b, and gradually transfers to the water-containing bed material 4 side, and is supplied to the plants P to grow the plants P.

When the plant P grows to some extent, a part of the root R thereof projects to the back surface of the bed material 4 and grows in the space 3. In such a state, the leaves of the plant P grow thick, and it is no longer necessary to supply a large amount of the nutrient solution 6 to the upper surface of the bed material 4, but rather it is necessary to supply it downward.

In such a case, as shown in FIG. 3, the small block 4b
Is removed from the bed material 4, and the nutrient solution 6 is discharged from the supply pipe 5.
Is dropped on the bottom surface 2 and supplied from the space portion 3 side, that is, the bottom surface of the bed material 4.

By supplying the nutrient solution 6 from the back surface of the bed material 4 as described above, a large amount of the nutrient solution can be supplied to the root portion R protruding from the back surface, and the root portion R can be exposed to air. It can promote upbringing.

In addition, after the small block 4b is removed and the nutrient solution 6 is supplied from the lower surface of the bed material 4, if the upper surface of the bed material 4 is heavily dried, a problem may occur in growing the plant P. . In such a case, as shown in FIG. 4, the nutrient solution 6 can be temporarily supplied to the upper surface of the bed material 4 by fitting the L-shaped tube 5b at the tip of the supply tube 5.

[Effect of device]

According to the present invention, a bed material made of a hydrous material is filled in the culture tank with a space between the bottom surface and the bed material. Moreover, a part of the bed material is cut off, and a small block is attached to and detached from the cut part. This is a hydroponic cultivation apparatus that is freely provided and has a nutrient solution supply port opened in this small block, and can achieve the following effects.

a. When the plant P is small and the nutrient solution is being absorbed mainly from the surface or the upper layer of the bed material, the nutrient solution is supplied to the bed material side through the small blocks. The nutrient solution is supplied from the surface layer side, and the nutrient solution can be supplied in a state optimal for culture without waste.

b. At a stage where the plant P grows to some extent and the root projects from the lower layer or lower surface of the bed material and grows in the space, the small block can be removed and the nutrient solution can be supplied from the lower layer side of the bed material. Therefore, the nutrient solution can be supplied without spoiling the root of the plant P. Further, by discharging the nutrient solution between the bed material and the bottom surface of the culture tank, air can be supplied to this portion, so that the growth of the plant P can be promoted.

c. The position where the nutrient solution is supplied from the surface side or the lower layer side of the bed material is performed by attaching and detaching the small block to the recess or cutout portion of the bed material, so that even an amateur can easily operate it. In particular, even busy city dwellers can enjoy plant cultivation.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a sectional view showing a main part of a culture device, and FIG. 2 is a plan view of a similar part. FIG. 3 is an explanatory view of a state where the nutrient solution is being supplied from the lower layer side of the bed material, FIG. 4 is an explanatory view of a state where the nutrient solution is being supplied from the upper layer side, and FIG. 5 is a discharge part of the nutrient solution. FIG. 1 ... Culture tank, 2 ... Bottom surface 3 ... Space, 4 ... Bed material 4a ... Excision part, 4b ... Small block 5 ... Supply pipe, 5a ... Opening part 5b ... L-shaped pipe 7 ... Hole, 8 ... O-ring 9 ... Return Tube, 10 ... slot 11 ... scale.

Claims (1)

[Scope of utility model registration request] 1. A bed material is filled in a cultivation tank with a gap between the bed and the bottom surface, a part of the bed material is cut, and a small block is detachably attached to the cut portion. A hydroponic cultivation device in which a nutrient solution supply port is opened in the small block.