JPH0638729B2 - Hydroponics for hydroponics - Google Patents

Description

TECHNICAL FIELD The present invention relates to a nutrient solution circulating device for hydroponic culture.

[Prior Art] Recently, hydroponics has become popular, and plants such as vegetables, fruits, and flowers are cultivated in an artificial soil mainly composed of rock wool and the nutrient solution is circulated and supplied to the plant. The device is in use.

In hydroponics, a fertilizer with a prescription according to the cultivated crops is added to the raw water to adjust the nutrient solution to the desired concentration in the nutrient solution storage tank, and a large number of rockwool beds are widely installed. Supplied by irrigation pipe from above.

The nutrient solution that has fallen on the rock wool bed falls into the drainage channel under the rock wool while moistening the bed. The nutrient solution is circulated and collected from the drain to the nutrient solution storage tank.

The water used here is circulated many times,
Since the presence of a trace amount of harmful substances or the proliferation of bacteria may occur, control of the water quality of the injected raw water has become an important issue related to the growth of hydroponics crops.

On the other hand, it is known that the growth rate is slightly increased when a plant is cultivated by using magnetized water (Affed Edition, Akiyama Akitoshi [Plant Revolution by Magnetism] No. 107-1.
Page 20).

[Problems to be Solved by the Invention] It is an object of the present invention to provide a device that purifies and activates raw water to stabilize the water quality of a nutrient solution and to perform hydroponics smoothly and efficiently. Is.

[Means for Solving the Problems] The present inventor has focused on the fact that the raw water to be used needs to be purified in order to control the water quality in hydroponics, and the raw water supplied is activated carbon and permanent magnets. The present invention has been completed based on the idea that, if activated by purification, stable water quality control and growth promotion by magnetized water are possible.

That is, the present invention, a raw water activation tank is installed between the raw water supply source and the nutrient solution storage tank, while periodically analyzing the components of the nutrient solution in the nutrient solution storage tank, automatically, A predetermined solution concentration is a nutrient solution circulating device for hydroponic culture that directly controls the raw water solution injection amount and the raw water injection amount to be introduced into the raw water activation tank, wherein the raw water activation tank uses activated carbon. The non-metallic filter case having a filled water supply surface and a water outlet surface has a large number of small holes in the water supply surface, and the water outlet surface also has a large number of small holes, and the water supply surface and / Or Hydroponics, which is a raw water activation tank having a built-in filter case in which a large number of thin disk-shaped permanent magnets that are adjacent to the periphery of the small hole on the water outlet surface are stuck in the same magnetic direction For activating raw water in a nutrient solution circulating device for water and a nutrient solution circulating device for hydroponics There built secure the filter case 2 of cylindrical shape into the outer tube 1 of circular shape, the filter case 2 having a cylindrical shape, the water supply side and the inner side surface 7 of the outer surface 8
The raw water is supplied from the lower inlet D of the outer cylinder 1 and is discharged from the lower outlet E of the cavity H of the inner surface 7 to provide a nutrient solution circulating device for hydroponics. is there.

The present invention will be described in more detail with reference to the drawings of the embodiments.

The raw water activating tank used in the present invention is not particularly limited in shape, but for example, a filter case in which activated carbon is filled in an outer cylinder is built in, and water entering from the inlet of the raw water activating tank is the filter. Water enters the case from one side of the case, passes through the activated carbon, and water exits from the other side of the case and is discharged from the outlet of the raw water activation tank.

For example, the raw water activation tank A having the structure shown in the embodiment of FIG. 1 can be preferably used.

This is a cylindrical outer case 1 having a cylindrical filter case 2 filled with activated carbon C. The filter case 2 is fixed to the outer case 1 by a bolt B, and a central portion has a cylindrical hollow H. Has become.

The filter case 2 used in the present embodiment is closed by donut-shaped discs 4 and 5 at the top and bottom, and when raw water enters through the inlet D of the activation tank, it is opened on the cylindrical outer surface 8 of the filter case 2. Water enters the filter case through a large number of holes F, and water enters through a hole G formed in the inner surface 7,
It exits the hollow H at the center and is discharged from the outlet E.

There are many holes on the inner surface 7 and the outer surface 8,
A permanent magnet 9 is installed around the hole, which magnetizes the raw water.

For example, as shown in FIG. 2, a large number of holes are provided on the surface in a grid pattern, and a permanent magnet 9 is provided at a central position of the four holes in a certain direction, for example, in the direction of water flow. Install from the south pole to the north pole vertically to the side surface.

Since the inner side surface 7 has a smaller area than the outer side surface 8, it is desirable to shorten the distance between the positions of the holes and the magnets in order to match the number of holes.

The distance between the center of the magnet and the center of the hole is preferably about 5 to 20 mm. Of course, this length can be appropriately selected depending on the diameter of the magnet and the strength of the magnetic force. Also, the shorter the distance between the end of the permanent magnet and the center of the hole, the greater the effect of magnetization, which is desirable. Therefore, it is desirable to install a permanent magnet so as to cover most of the surface of the filter case and make a hole in the gap between the magnets.

The stronger the magnetic force of the permanent magnet used in the present invention, the better. For example, a strong permanent magnet that emits magnetic force lines of 2000 gauss or more is desirable.

The permanent magnets can be installed on both the surface on the water supply side and the surface on the outlet side of the filter case 2 or only one of them. It is preferable to provide both of them because the magnetization efficiency is good.

In this embodiment, the thickness is 2 mm and the diameter is 10 as shown in FIG.
A disc-shaped thin magnet plate of mm is attached to the outer surface 8 with the N pole surface facing the outer surface 8, and the inner side surface 7 has the S pole surface.
It is used by sticking to.

The magnet may be attached to the back inner surface of the filter case 2.

The method for attaching the magnet may be any method without particular limitation, and it may be performed by a method of attaching it to the filter case 2 with an adhesive, a method of providing a recess on the surface of the filter case 2 and fitting it.

The material of the filter case 2 may be a material that does not interfere with magnetism, for example, a non-metallic material such as plastic or wood.

The filter case 2 is fixed to the outer cylinder 1 by a bolt B, and a space for a passage of raw water is provided outside the filter case 2.

Water that has entered through the inlet D of the raw water activation tank rises outside the filter case 2 and enters the filter case 2 through the hole F on the outer surface 8.

When the flow rate of the raw water increases, the water level in the raw water activation tank rises, and when the water level rises too much, it overflows from the top of the filter case 2 to the central hollow portion H. Further, this structure has an advantage that the water injected into the raw water activation tank does not stay except for the amount absorbed by the activated carbon layer. Therefore, the raw water injected into the tank is immediately discharged from the outlet E.

Raw water is activated by being affected by the magnetic field when passing through the outer surface 8 and the inner surface 7 of the filter case.

The water that has entered the filter case 2 adsorbs bacteria, various organic substances, metal ions, chlorine ions, etc. by the activated carbon. By the action of this activated carbon, it is possible to prevent the harmful effects of harmful components on the cultivated plant, reduce the growth of bacteria, and perform smooth cultivation.

The activated carbon used in the present invention is not particularly limited, and any activated carbon such as powdered activated carbon, granulated activated carbon and charcoal can be used, but the specific surface is 100 in terms of adsorption ability.
It is preferably 0 m ² / g or more.

The raw water treated in this way is supplied to the nutrient solution storage tank from the outlet of the raw water activation tank.

In the nutrient solution storage tank, a conventionally known EC controller is automatically controlled so that the component concentrations are always constant.

In this method, the concentration of the nutrient solution is analyzed at regular intervals, and the nutrient solution concentration is automatically adjusted by adding a concentration solution of a nutrient solution component such as fertilizer or adding raw water.

The nutrient solution having a constant concentration is intermittently removed from the rock wool bed by a pump at regular intervals.

FIG. 4 shows a system diagram of the nutrient solution circulating apparatus for hydroponics of the present invention. In this, a raw water activating device is installed between a raw water source of a normal hydroponic nutrient solution circulating device and a nutrient solution storage tank.

The system shown in this system diagram is a concentrated solution of nutrient solution that is automatically introduced into the nutrient solution storage tank while periodically analyzing the components of the nutrient solution in the nutrient solution storage tank, so that the concentration of the ingredient is automatically determined. The amount of raw water introduced into the raw water activation tank is directly controlled, and fresh magnetized water immediately after being discharged from the raw water activation tank is used to adjust the nutrient solution concentration in the storage tank. The invention is a nutrient solution circulating device for hydroponic cultivation.

After the water discharged from the raw water activation device is stored for a long period of time, the efficacy is reduced and bacteria are likely to be generated.

Since the circulation system is adopted, if the circulation is repeated for a long period of time, the nutrient solution in the nutrient solution storage tank cannot be completely purified, and at regular intervals, all the nutrient solution is discarded and renewed with newly activated water.

In the nutrient solution circulation device of the present invention, the raw water activation tank A is installed between the raw water tank and the nutrient solution storage tank, and when the amount of the nutrient solution storage tank decreases, the pump of the raw water tank works in conjunction with the EC controller. When activated, raw water is injected into the raw water activation tank, which constantly flows out fresh magnetized water through the filter case into the storage tank.

[Effects of the Invention] By using the nutrient solution circulation device for hydroponics of the present invention, the circulation management of the nutrient solution is stabilized, and the risk of disturbing the growth of crops due to bacterial reproduction and harmful components is reduced. The magnetized water can improve the growth rate of hydroponics.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of an example of the raw water activation tank used in the present invention, FIG. 2 is a side plan view of a filter case of the raw water activation tank used in the present invention, and FIG. FIG. 4 is a perspective view of an example of a permanent magnet used in the present invention, and FIG. 4 is a system diagram of a hydroponic nutrient solution circulating device of the present invention. Reference numerals in the figure are 1; outer cylinder, 2; filter case, 4;
Upper lid, 5; lower lid, 6 ;, 7; inner surface of filter case,
8; outer surface of filter case, 9: permanent magnet plate,
A: raw water activation tank, B: bolt, C: activated carbon, D: inlet, E: outlet, F, G; hole, H: central cavity.

Claims (2)

[Claims] 1. A raw water activation tank is installed between a raw water supply source and a nutrient solution storage tank, and the components of the nutrient solution in the nutrient solution storage tank are periodically analyzed while automatically determining a predetermined value. Is a nutrient solution circulating device for hydroponics, which directly controls the injection amount of the nutrient solution and the injection amount of the raw water to be introduced into the raw water activating tank so that the raw water activating tank is filled with activated carbon. The non-metallic filter case having a water supply surface and a water outlet surface has a large number of small holes, the water outlet surface also has a large number of small holes, and the water supply surface and / or Alternatively, it is a raw water activating tank having a built-in filter case in which a large number of thin disk-shaped permanent magnets adjacent to the periphery of the small hole on the water outlet surface are attached in a magnetic direction aligned with each other. Nutrient solution circulation device. 2. A raw water activating tank has a cylindrical filter case 2 fixedly incorporated in an outer cylinder 1 having a circular shape. The cylindrical filter case 2 has an outer surface 8 and a water supply surface. The water according to claim 1, wherein the water has a water outlet on the side surface (7), and raw water is supplied from a lower inlet (D) of the outer cylinder (1) and discharged from a lower outlet (E) of a cavity (H) on the inner side surface (7). A nutrient solution circulation device for tillage.