JP2001136850A - System for hydroponics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hydroponics system which solves various problems in the hydroponics system. SOLUTION: In this hydroponics system, a root-taking member 4, a cover member 5 and a pressing force-adjusting member 6 are received in each of culture containers 1 stacked at multi-stages. The pressing force-adjusting member 6 is placed so as to be superposed on a cover member 5 to approximately uniformly press the cultured plants. A culture liquid is supplied into the highest culture container 1a from a liquid supply pipe 7, passed through liquid-passing pipes 8 disposed in the bottom portions of the culture containers 1, and then drained from the liquid drain pipe 9 of the lowest culture container 1b. When the cultured plants are harvested, the root-taking member 4 is placed in a vertical posture, and the root portions of the cultured plants 11 are cut down along the seed-receiving surface 4d of the root-taking member 4 by the use of a root- cutting device in which two relatively forward or backward moving blades are disposed in the vertical direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydroponic cultivation system for cultivating bean sprouts and the like.

[0002]

2. Description of the Related Art A hydroponic cultivation system is a cultivation system in which roots are immersed in a cultivation solution without using soil, so that bean sprouts and the like can be cultivated in a short period of time and can be supplied stably. It is a cultivation system.

[0003] In this hydroponic cultivation system, for example, seeds are sown on a plate-shaped rooting member serving as a root bed, stored in a multi-layered cultivation container, and a cultivation liquid is stored below the rooting member. This is absorbed into the roots of the cultivated product to grow the cultivated product.

[0004]

In the above-mentioned hydroponic cultivation system, it is necessary to supply a cultivation liquid into each cultivation container. Regarding the supply of the cultivation liquid, see, for example, Japanese Patent Application Laid-Open No. 11-1553.
As described in No. 76, a pipe for supplying and discharging the cultivation liquid may be provided for each cultivation container, but the pipe is complicated and the equipment becomes large. In particular, when many sets of cultivation containers in a stacked state are prepared to improve productivity, and these are densely packed and simultaneously cultivated with water, it is difficult to secure a space for piping, and the piping cost becomes enormous.

Also, for example, when cultivating beans such as bean sprouts, it is known that thick and high-quality bean sprouts can be obtained by growing the beans while holding down the head of the sprouts. A method of applying a pressing force to a bean sprouts includes, for example, as described in Japanese Utility Model Registration No. 3038567, providing a holding plate on the head of a bean sprouts in a cultivation container, and using an end of the holding plate. It is known that a plurality of elastic members (rubber or the like) are provided between the base member and a bottom portion of the rooting member to apply a downward force to the holding plate. However, when a plurality of cultivation container groups are assembled as described above, a region where growth is fast and a region where growth is slow occur in the cultivation container due to the quality of air permeability and the like, whereby the holding plate may be inclined. is there. When the elastic force is used as the pressing means, when the holding plate is tilted in this way, a difference occurs in the amount of deformation of each elastic member, and the pressing force varies, making it difficult to perform uniform pressing.

[0006] The roots of the cultivation are exposed on the lower surface of the rooting member, but the cultivation may be cut off and shipped depending on market demand. As a method for cutting the roots, for example, Japanese Utility Model Registration No. 3031690 discloses a method in which a flat cutter is pressed against the sprouts of bean sprouts, but the flat cutter has poor sharpness. Cutting debris and the like are likely to remain on the upper surface, which is problematic in terms of hygiene. Moreover, when cutting repeatedly, the sharpness may be further reduced due to interference with the already cut bean sprouts.

Therefore, an object of the present invention is to provide a hydroponic cultivation system which has solved the above various problems in the hydroponic cultivation system.

[0008]

According to the present invention, there is provided a hydroponic cultivation system comprising: a cultivation container capable of being stacked in a plurality of stages; a liquid storage space provided at a bottom of the cultivation container for storing cultivation liquid; A cultivation space provided in the cultivation container above the liquid storage space to grow cultivated products with the cultivation liquid in the liquid storage space, and a cultivation liquid supply unit for supplying the cultivation liquid to the liquid storage space of each cultivation container. I do. Among them, the cultivation liquid supply means is a liquid passage part that supplies a part of the cultivation liquid supplied to the storage space of the upper cultivation container stacked in a plurality of stages to the liquid storage space of the lower cultivation container. I have it.

In this case, there is no need to provide a pipe joint or the like between the cultivation containers, so that work efficiency is improved and space can be saved. In addition, the outer surface of the cultivation container can be a flat surface that does not protrude, such as a valve or a pipe joint, thereby improving maintainability such as cleaning work. It is more convenient to arrange the positions of the liquid passage portions in the height direction of the cultivation container (to arrange them on a straight line), since the type of the cultivation container is unified, and in order to reduce the molding cost of the cultivation container. Is good. On the other hand, if this is not a problem, the liquid passage portions of the respective stages may be horizontally shifted so as to be different from each other, and in this case, the replacement of the cultivation liquid in the storage space of each cultivation container is promoted. And a fresh cultivation liquid can be given to the cultivated product.

The liquid passage section has a simple structure in which, for example, the cultivation liquid overflowed from the liquid storage space of the upper cultivation container is supplied to the liquid storage space of the lower cultivation container. preferable. In order to cause the cultivation liquid to overflow, the inlet of the liquid passage section may be opened at a predetermined height from the bottom in the liquid storage space. In addition, it is desirable that the liquid-passing portion be passed through the outside of the growing space of the lower cultivation container and supply the cultivation liquid from the storage space of the upper cultivation container to the storage space of the lower cultivation container. Further, as a similar configuration, the cover member provided around the cultivation space of the cultivation container suppresses the cultivation liquid flowing into the cultivation container from the liquid passage portion into the cultivation space. The cultivation liquid may be introduced into the liquid storage space.

This is to prevent diffusion of ethylene gas when the cultivated product releases ethylene gas as a growth promoting substance. That is, some plants, such as sprouts, emit ethylene gas with their growth, and this may play a hormonal role as a growth promoting substance, in which case the cultivation liquid discharged from the outlet is grown. When discharged into the growing space for products, ethylene gas is diffused by the falling cultivation liquid, and the growth promoting function is reduced or lost. Therefore, the cultivation liquid flowing out of the outlet is supplied to the liquid storage space by passing it through a region other than the growing space, so that the ethylene gas atmosphere is maintained without being disturbed. In this case, it is not always necessary to completely separate the outflow path of the cultivation liquid from the outlet and the growing space, and if there is no problem as a whole, the outflow cultivation liquid may be applied to some cultivated products. Is also acceptable.

As such a structure, for example, in addition to a structure in which a flow path for cultivation liquid is provided inside the side wall of each container to directly connect the upper liquid storage space and the lower liquid storage space, It is desirable to adopt a structure in which the cultivation liquid is introduced into the storage space by passing through the flow path of the cultivation liquid provided on the side of the growing space.

[0013] In the hydroponic cultivation system, of the cultivation containers stacked in a plurality of stages, a part or all of the cultivation containers are provided with a lighting part, and the cultivation containers that require light for growth in the cultivation containers. Can be cultivated, and various types of cultivated products can be cultivated simultaneously.

In hydroponic cultivation in which a pressurizing means for pressurizing a cultivation in a cultivation space from above is disposed in a cultivation container, the pressurizing means is disposed on the cultivation in the cultivation space, and is controlled only by its own weight. It is preferable to adopt a configuration in which the cultivation is pressurized. In this case, even if the pressurizing unit is inclined due to a difference in the growth degree of the cultivation in the growing space or the like, it is possible to substantially uniformly apply a pressing force of a certain amount or more to the entire cultivation, and use an elastic member. As a result, a situation in which a large variation occurs in the pressing force of the cultivated product due to the difference in the amount of elastic deformation of each elastic member is avoided.

[0015] The cultivation is performed by using a cultivation container having a storage space for storing the cultivation liquid, a cultivation space for cultivating the cultivation with the cultivation liquid stored in the storage space, and a rooting member between the two spaces for rooting the cultivation. In a hydroponic cultivation system including a step of growing the root and a root cutting step of rooting the grown cultivation, the root cutting step is preferably performed with the rooting member in a vertical posture.

As a cutting means in the root cutting step, a structure in which a plurality of blade members each having a large number of teeth are relatively slid in motion can be considered. With this kind of cutting means, the cultivation can be cut and bitten by cutting the cultivation with the teeth of one blade member of the plurality of blade members and the teeth of the other blade member. Even for rich cultivated products (eg, sprouts), smooth and reliable root cutting can be performed, and poor cutting is reduced, so that the yield of the root-cut cultivated products is increased.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A bean sprouts hydroponic cultivation system according to one embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, this hydroponic cultivation system comprises a cultivation line A (see FIG. 2) which manages the process from putting bean sprouts seeds 10 into a cultivation container 1 which can be stacked in multiple stages until germination and growth. 2), and a shipping line B (shown by a two-dot chain line in FIG. 2) for managing each step of the cultivated bean sprouts, such as root cutting and packaging. Basically, each process is controlled by a computer, and the process from seeding to shipping is performed almost automatically.

As shown in FIG. 2, the cultivation container 1 is a box having an open top, and can be stacked in multiple stages by fitting the upper edge 2 and the lower end 3 as appropriate. Cultivation container 1
, A plate-like rooting member 4 is accommodated, and a cover member 5 and a pressing force adjusting member 6 are accommodated thereon as a pressing means.

The rooting member 4 has a shape that fits into the inner surface of the cultivation container 1 through a minute gap, for example, a rectangular shape, and is mounted on a plurality of projections 1c provided at a predetermined height at the bottom of the cultivation container 1. It is placed horizontally. As shown in FIGS. 3A and 3B, on the upper surface (seed receiving surface 4d) of the rooting member 4,
A plurality of seed receiving spaces 4 partitioned by rib-shaped lattices 4a
b is formed. As shown in FIG. 3 (C), the various receiving spaces 4b have a large number of holes 4c.

The cover member 5 is, like the rooting member 4,
It is a holeless plate (for example, rectangular) that fits into the inner surface of the cultivation container 1 via a minute gap. At a substantially central portion on the cover member 5, a pressing force adjusting member 6 is disposed via an appropriate positioning means. The total weight of the cover member 5 and the pressing force adjusting member 6 is set such that an appropriate pressing force is applied to the growing bean sprouts as described later. Adjustment of the total weight can be performed by replacing the pressure adjusting member. Of course, if a sufficient pressing force can be obtained only by the cover member 5, the pressing force adjusting member 6 may be omitted. Note that the cover member 5 and the pressing force adjusting member 6 can be formed integrally.

In the interior of the cultivation container 1, the space provided between the rooting member 4 and the bottom surface of the cultivation container 1 is referred to as a liquid storage space s1, and the space provided between the rooting member 4 and the cover member 5 is grown. The space is s2. The liquid storage space s1 is a space for storing cultivation liquid necessary for growing bean sprouts in each cultivation container 1, and the cultivation space s2 is a space for cultivating bean sprouts in each cultivation container 1.

The cultivation armpit is supplied to each storage space s1 of the stacked cultivation containers via cultivation liquid supply means including a liquid supply pipe 7, a liquid flow pipe 8, and a drain pipe 9. As shown in FIG. 1, a liquid supply pipe 7 is provided above the cultivation container 1a stacked on the uppermost stage. At the bottom of each cultivation container 1, a liquid passage pipe 8 as a liquid passage section is provided. The liquid passage tube 8 is connected to each cultivation container 1
An opening is provided at the bottom of the device. The liquid passage pipe 8 has an inflow port 8a at a predetermined height position slightly lower than the lower surface of the rooting member 4 of the cultivation vessel 1, and has an outflow port 8b on the outer bottom surface of the cultivation vessel 1. A drain pipe 9 is provided at the bottom of the lowermost cultivation container 1b.

The position where the liquid supply pipe 7, the liquid flow pipe 8 and the liquid discharge pipe 9 are provided is not limited to the vicinity of the bottom edge of the cultivation container 1 as shown in FIG. Each may be provided near the center of the cultivation container 1. In addition, at this time, if the positions where the liquid passage pipes 8 are provided in the respective cultivation containers 1 are aligned, the shape and structure of the cultivation containers 1 can be made common, so that the molding cost of the cultivation containers 1 can be reduced. On the other hand, when the cultivation containers 1 are stacked, if the positions of the liquid passage pipes 8 are arranged alternately in each stage, the flow of the liquid passage tubes 8 of the upper cultivation container 1 can be increased when the cultivation liquid 20 described later is replenished. Since the distance between the outlet 8b and the inflow port 8a of the liquid passage tube 8 of the lower cultivation container becomes longer, an effect of promoting the replacement of the cultivation liquid 20 in the storage space s1 can be expected.

Hereinafter, each step of the cultivation line (A) and the shipping line (B) will be described in order.

As shown in FIG. 1, the cultivation line (A)
The method includes a seeding step 31, a pressurizing means setting step 32, a cultivation liquid supplying means setting step 33, and a growing management step.

The seeding step 31 is a step of sowing bean sprout seeds 10 in the cultivation container 1. In this step, the cultivation container 1 is sent immediately below a seed sowing machine (not shown) in a state where the rooting member 4 is spread, and the bean sprouts seeds 10 are sown on the rooting member 4 by the seed sowing machine. At this time, as shown in FIGS. 3A, 3B, and 3C, the rooting member 4 is partitioned into the seeding spaces 4b by the lattices 4a, and the seeds 10 accommodated in the various holding spaces 4b are biased. Since there is no seed, the seeds 10 can be evenly sown on the rooting member 4.

The pressurizing means setting step 32 comprises the following steps:
The cover member 5 is placed on the rooting member 4 sown with 0, and the pressing force adjusting member 6 having a predetermined weight is placed on the cover member 5.
This is the step of placing

Cultivation container 1 which has passed through the pressurizing means setting step 32
Are stacked in a predetermined number of stages. One or more sets (for example, four sets) of the stacked cultivation containers 1 are arranged on a transfer pallet. At this time, the stacked cultivation containers 1
In order to secure air permeability between the cultivation containers 1, it is desirable to provide an appropriate space of at least 10 cm or more between the side surfaces of the cultivation container 1. The cultivation container 1 in which the stacking is completed as described above is
It is transferred to the cultivation liquid supply means setting step 33.

In the cultivation liquid supply means setting step 33, as shown in FIG. 2, with the cultivation containers 1 stacked in multiple stages, the liquid supply hose 12 is attached to the liquid supply pipe 7 of the uppermost cultivation container 1a. A drain hose 13 is connected to the drain pipe 9 of the lower cultivation container 1b.
Install. The cultivation liquid 20 is supplied to each cultivation container 1 by the cultivation liquid supply unit. In the cultivation of bean sprouts, the cultivation liquid 20 is water. When cultivating other plants such as spinach, the cultivation solution 20 is a cultivation solution containing necessary nutrients necessary for growing the plant in water.

The flow of the cultivation liquid 20 in the cultivation liquid supply means is as follows. First, the cultivation liquid 20 is supplied from the liquid supply hose 12 to the liquid supply pipe 7 of the uppermost cultivation container 1a. The cultivation liquid 20 flows over the cover member 5 of the uppermost cultivation container 1a, diffuses, drops from the peripheral portions of the cover member 5 and the rooting member 4, and forms a liquid storage space s at the bottom of the cultivation container 1a.
Collect in one. The cultivation liquid supply unit of the present embodiment includes a cultivation liquid 2
The cultivation liquid 20 is introduced into the storage space s1 by passing through the side of the cultivation space s2 so that 0 does not flow into the cultivation space s2. Here, the cover member 5 acts so as to cover the upper part of the growing space s2 and to prevent the culture liquid 20 from flowing into the growing space s2.

When a certain amount or more of the cultivation liquid 20 accumulates in the liquid storage space s1, the cultivation liquid 20 overflows from an inflow port 8a provided at a predetermined height at the bottom of the cultivation container 1a, and flows through a liquid passage pipe. 8 and flows into the liquid storage space s1 of the lower cultivation container 1. Similarly, in the lower cultivation container 1, the cultivation liquid 20 accumulates up to the height of the inflow port 8 a of the liquid passage tube 8 provided at the bottom of the cultivation container 1, and stores the lower cultivation container 1 from the liquid passage tube 1 by one. It flows into the liquid space s1. At this time, the cultivation liquid 20 supplied in the same manner as described above flows on the cover member 5 and diffuses, so that the cultivation liquid 20 is suppressed from flowing into each of the breeding spaces s2.

As described above, when the cultivation liquid 20 accumulates at the bottom of each cultivation container 1 to a predetermined height, the cultivation liquid 20 is introduced into the liquid storage space s1 of the lower cultivation container 1 without collecting any more. In addition, the amount of the cultivation liquid 20 that accumulates at the bottom of the cultivation container 1 can be adjusted by the height at which the outlet 8a of the liquid passage tube 8 is provided.

Then, in the lowermost cultivation container 1b, the cultivation liquid 20 accumulates at a predetermined height at the bottom of the cultivation container 1b, and the overflow is discharged from the drainage pipe 9 through the drainage hose 13.

Next, in the breeding management step 34, breeding conditions such as temperature, humidity, and liquid supply amount are managed based on past empirical data. For example, based on various conditions during cultivation, such as temperature, liquid temperature of the cultivation liquid 20, and humidity, the required cultivation is performed using a computer having a program that can grasp the degree of growth of the bean sprouts in each cultivation container 1. The computer manages the growth of the bean sprout 11 while controlling the supply timing and the supply amount of the cultivation liquid 20 so that the liquid 20 is distributed to each cultivation container 1.

In the breeding management step 34, the bean sprouts seeds 10 germinate, and the roots 17 reach the cultivation liquid 20 collected at the bottom of the cultivation container 1 through the holes 4b of the rooting member 4. Then, after the root 17 is rooted on the rooting member 4, the bean sprouts 11 grow while pushing up the cover member 5. During this growth process, the bean sprouts 11 in the cultivation container 1 are urged downward with substantially uniform force only by the weight of the pressurizing means including the cover member 5 and the pressing force adjusting member 6. Therefore, according to the pressurizing means as described above, even if the cover member 5 is inclined due to a difference in the degree of growth of the bean sprouts 11, a substantially uniform pressure can be applied to the bean sprouts 11, so that the bean sprouts 11 The variation in length and thickness of the bean 11 is reduced, and a thick and high-quality bean sprouts can be obtained.

During this growing, the cultivation liquid 20 is intermittently supplied from the supply pipe 7 at a predetermined timing, and each storage space s1 is supplied.
The cultivation liquid 20 is replenished. Also, during this replenishment, the cultivation liquid 20 does not splash on the bean sprouts 11 in the growing space s2 as described above, so that diffusion of ethylene gas released from the bean sprouts 11 can be prevented.

That is, the bean sprouts 11 always emit ethylene gas as they grow. The ethylene gas is considered to play a hormonal role as a growth promoting substance. For this reason, when the cultivation liquid 20 discharged from the outlet is discharged into the cultivation space s2 of the bean sprouts 11, ethylene gas is diffused in the cultivation liquid 20, and the growth promotion function may be reduced or lost. . Therefore, the cultivation liquid 20 flowing out from the outlet 8b of the liquid passage tube 8 is stored by passing through a region other than the cultivation space s2 (in this embodiment, a gap between the cultivation space s2 and the inner surface of the cultivation container 1). By supplying the liquid space s1, the atmosphere of the ethylene gas in the growth space s2 can be maintained without being disturbed. If the influence on the ethylene gas atmosphere in the growing space s2 is negligible as a whole, a situation in which a part of the cultivation liquid 20 to be ejected hangs on the bean sprouts 11 is also allowed.

During the replenishment, in order to maintain the sanitary condition of the cultivation liquid 20 in a good condition, a harmless germicide such as ozone water is supplied from the liquid supply hose 12 at an appropriate time, and the liquid supply pipe 7, It is preferable to suppress the growth of bacteria in the flow path of the cultivation liquid 20, such as the liquid storage space s1, the liquid passage pipe 8, the drain pipe 9, and the drain hose 13, and sterilize it.

In the breeding management step 34, the bean sprouts 11 are sent to the shipping line (B) in order from the cultivation container 1 which has grown to such an extent that it can be harvested.

As shown in FIG. 1, the shipping line (B)
Root cutting process 35, shipping process 36, container cleaning process 37
Is provided.

In the root cutting step 35, the cultivation containers 1 are separated and the rooting members 4 on which the bean sprouts 11 are rooted are taken out of each cultivation container 1. As shown in FIGS. 4A and 4B,
The taken-out rooting member 4 turns the seed receiving surface 4d with the bean sprouts 11 toward the root cutting device 16 and changes the posture to a vertical position so that the seed receiving surface 4d is vertical, and then a clamp (not shown). It is clamped by the device and transferred to the root cutting process while maintaining this posture. Then, the bean sprouts 11 are cut off along the seed receiving surface 4d of the rooting member 4 at the root portion by a root cutting device 16 having two blades 15 attached in a vertical direction.

As shown in FIG. 4C, the root cutting device 16
Has a structure in which two blade members (15a, 15b) each having sawtooth teeth are relatively moved back and forth via a motor 21 and a cam mechanism 22, thereby shearing off the bean sprouts 11. Further, as shown in FIG.
6 is a bean sprouts 11 from the lower side of the standing rooting member 4 first.
The lower side of the blade 15 is fixed to the rooting member 4 so that
4 (A) is disposed so as to protrude upstream in the transfer direction (the direction indicated by the arrow in FIG. 4A). Thereby, the load on the blade 15 applied to the rooting member 4 is reduced, and the root can be cut smoothly. In addition, when the inclination direction of the blade 15 is reversed (a state in which the upper side of the blade 15 is protruded to the upstream side in the transport direction of the rooting member), the load on the blade 15 can be similarly reduced.

As shown in FIG. 5, the cam mechanism 22 includes a cam 24, a swing arm 25, a first arm 26, a second arm 27, guides (28, 29), and a tooth mounting member 30.
And

As shown in FIG. 5, the cam 24 has a circular cam surface and is mounted eccentrically on the rotating shaft 23 of the motor 21. The swing arm 25 is swingably attached to a swing shaft 25a and swings by contacting the cam 24.
The first arm 26 is rotatably attached to the swing arm 25 by a first pivot 26a. The second arm 27 is rotatably attached to the first arm 26 via a second pivot 27a, and is guided in the straight direction by guides (28, 29) provided vertically and reciprocates back and forth. The tooth attachment member 30 is attached to the tip of the second arm 27. The cam mechanism 22 has two systems, and a blade member (15a, 15b) is attached to each cam mechanism 22. The cams 24 of both cam mechanisms 22 are attached to a common motor 21 rotating shaft 23 with a predetermined phase difference.

The root cutting device 16 includes one motor 2
1 allows the two blade members (15a, 15b) to relatively move back and forth at a predetermined timing. Root cutting device 1
6 has a tooth structure in which the two blade members (15a, 15b) move relatively back and forth while sliding on each other,
Even when the root of the bean sprouts 11 is caught on the teeth of the one-side blade member, the beans can be cut off by the teeth of the other blade member, and the root can be cut smoothly.

As shown in FIGS. 4A and 4B, since the root cutting device 16 cuts the root 17 of the bean sprouts with the rooting member 4 in the vertical position, the cutting chips, the cutting waste, Since the cultivated product or excessive water or the like falls one after another, it is possible to prevent the cultivated product from adhering to these cutting means. Also,
For example, by installing the belt conveyor 19 on the seed receiving surface 4d side of the rooting member 4, the bean sprouts 11 cut from the rooting member 4 can be continuously collected. Further, on the bottom side of the rooting member 4, for example,
If a disposal bag (not shown) is provided below the root 6, the bean sprouts root 17 can be collected.

The shipping step 36 is a step of washing the bean sprouts 11 on which root cutting has been performed, and then packaging and shipping the sprouts 11 in predetermined amounts.

The container washing step 37 is a step of washing the cultivation container 1, the rooted rooting member 4, the cover member 5, and the pressing force adjusting member 6 which have been cut off, and sending them to the cultivation line (A) again.

Although the hydroponic cultivation system according to one embodiment of the present invention has been described above, the present invention is not limited to the above description.

For example, the cultivation is not limited to bean sprouts, but can be applied to any cultivation that can be hydroponically cultivated. Also, in the case of a variety that is not suitable for pressing and urging from above at the stage of growth, without using a pressing force adjusting member, so that the cultivation liquid does not flow into the cultivation space, a plate material that merely acts as a cover member, It may be installed at a predetermined height position in the breeding space, away from the cultivation. Further, the pressing force adjusting member may be replaced with an appropriate weight according to the variety of the cultivated product or the growth of the cultivated product. In addition, the number of liquid supply pipes, liquid supply pipes, and drainage pipes provided in the cultivation container may be changed, and one or more liquid supply pipes, liquid supply pipes, and drainage pipes can be arranged.

In the cultivation container, it is possible to cultivate different kinds of plants for each stage. For example, leaf vegetables (spinach) and the like can be provided by providing a daylighting unit that takes in light in the growing space of the cultivation container, such as forming each member of the cultivation container from a transparent or translucent material, or providing a frontage on a side wall of the cultivation container. It is possible to cultivate cultivars that require light for their growth. In this case, a cultivation product (such as bean sprouts) that does not require light can be simultaneously grown in another cultivation container, and the cultivation space can be used efficiently. However, for example, when mixing bean sprouts and spinach in one set of cultivation container rows stacked in a plurality of stages,
When the cultivation solution of the bean sprouts and the cultivation solution of the spinach are different, it is necessary to supply a different cultivation solution to each. For this reason, it is necessary to divide the flow path for supplying the cultivation liquid between the cultivation container for cultivating bean sprouts and the cultivation container for cultivating spinach.

The cultivation liquid supply means has a liquid passage section,
For example, a cultivation liquid flow path is provided in the side wall of the cultivation container, and the liquid storage space of the upper cultivation container communicates with the liquid storage space of one lower cultivation container, and the liquid storage space of the lower cultivation container is connected. The cultivation liquid may be introduced into the container.

Further, in the above embodiment, the rooting member is set in the vertical posture as an optimum use form of the root cutting device. However, the posture of the rooting member is not limited to the vertical posture.

The above-described embodiment shows an ideal form of the hydroponic cultivation system, in which each step of the cultivation line and the like is managed by a computer. You can do it.

[0056]

According to the hydroponic cultivation system according to the present invention, the cultivation liquid supply means transfers a part of the cultivation liquid supplied to the storage space of the upper cultivation container stacked in a plurality of stages to the lower cultivation container. The cultivation liquid is supplied from the upper storage space to the liquid storage space of the lower cultivation container, so that the supply of the cultivation liquid from the outside is unnecessary. Becomes This eliminates the need for an external liquid supply pipe for each cultivation container to which the cultivation liquid is supplied by the liquid passage section, and simplifies the pipe structure. As a result, even when a plurality of stacked cultivation container groups are arranged in a dense state, piping is possible, and a large amount of cultivated products can be simultaneously grown to increase productivity.

Further, since the cultivation liquid overflowing from the liquid storage space of the upper cultivation container is supplied to the liquid storage space of the lower cultivation container, the liquid passing section keeps the amount of the cultivation liquid accumulated in the liquid storage space constant. The cultivation liquid can be supplied efficiently.

Also, the cultivation liquid is introduced from the storage space of the upper cultivation container to the storage space of the lower cultivation container by passing the liquid passage section outside the growing space of the lower cultivation container. When growing bean sprouts, the growth of the cultivated product can be promoted in a more efficient state without disturbing the atmosphere of ethylene gas in the growing space.

Further, a cover member is provided around the growing space of the cultivation container, and by this cover member, the cultivation liquid flowing into the cultivation container from the liquid passage portion is prevented from flowing into the cultivation space. Similarly, when the cultivation liquid is introduced into the storage space of the cultivation container, the growth of the cultivation product can be promoted in a more efficient state without disturbing the atmosphere of ethylene gas in the cultivation space.

In addition, among the stacked cultivation containers, some or all of the cultivation containers are provided with a light-transmitting portion to grow cultivated products that require light for their growth. It is possible to hydroponic.

Further, it has a storage space for storing the cultivation liquid, a growing space for growing the cultivated liquid with the cultivation liquid stored in the storage space, and a pressurizing means for pressurizing the cultivation in the growing space from above. In the hydroponic cultivation system using the cultivation container, the pressurizing means is arranged on the cultivation in the growing space and pressurizes the cultivation only by its own weight. And high quality cultivated products can be obtained efficiently.

Further, since the root cutting step is performed with the rooting member in a vertical position, the cut cultivation, cutting debris, or excessive water does not adhere to the root cutting member. Since it falls immediately, it is hygienic and can maintain smooth root cutting. Further, the root cutting device, by performing root cutting with the rooted member in a vertical posture, it is possible to collect the cultivation on the surface on the side where the cultivation of the rooted member is rooted,
Since the root of the cultivated product can be collected on the opposite surface, the cultivated product and the waste can be separated and collected.

Further, since the root cutting in the root cutting step is performed by the relative sliding motion of a plurality of blade members each having a large number of teeth, even if the root of the cultivation is caught on one tooth, the other tooth is used. The cultivation can be cut off and the root can be cut smoothly.

[Brief description of the drawings]

FIG. 1 is a flowchart of a hydroponic cultivation system according to an embodiment of the present invention.

FIG. 2 is an end view showing a cultivation container according to one embodiment of the present invention.

FIG. 3A is a plan view of a rooting member according to an embodiment of the present invention. (B) is XX sectional drawing of the rooting member which concerns on one Embodiment of this invention. Sectional drawing of the Y part of the rooting member which concerns on one Embodiment of this invention.

FIG. 4A is a side view showing a root cutting step according to an embodiment of the present invention. (B) is the figure which looked at the root cutting process from the top.
(C) is a diagram showing the movement of the teeth of the root cutting device.

FIG. 5 is a diagram showing an internal structure of a root cutting device according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cultivation container 4 Rooting member 5 Cover member 6 Pressure adjustment member 7 Supply pipe 8 Liquid passage pipe 9 Drain pipe 11 Bean sprouts 17 Root 20 Cultivation liquid s1 Storage space s2 Growth space

Claims (8)

[Claims] 1. A cultivation container that can be stacked in a plurality of stages, a storage space provided at a bottom portion of the cultivation container for storing cultivation liquid, and a cultivation container provided at an upper portion of the liquid storage space in the cultivation container. In a hydroponic cultivation system including a cultivation space for growing cultivated products with the cultivation liquid in the storage space and a cultivation liquid supply unit that supplies the cultivation liquid to the storage space of each cultivation container, the cultivation liquid supply unit includes: A hydroponic cultivation system including a liquid passing unit that supplies a part of the cultivation liquid supplied to the liquid storage space of the upper cultivation container stacked in a plurality of stages to the liquid storage space of the lower cultivation container. 2. The hydroponic according to claim 1, wherein the liquid-passing section supplies the cultivation liquid overflowing from the storage space of the upper cultivation container to the storage space of the lower cultivation container. Cultivation system. 3. The cultivation liquid is passed through the cultivation space of the lower cultivation container, and the cultivation liquid is introduced from the storage space of the upper cultivation container into the storage space of the lower cultivation container. The hydroponic cultivation system according to claim 1 or 2, wherein 4. A cover member is provided around a cultivation space of the cultivation container, and the cultivation liquid flowing into the cultivation container from the liquid passage portion is suppressed by the cover member from flowing into the cultivation space. The hydroponic cultivation system according to any one of claims 1 to 3, wherein the cultivation liquid is introduced into a liquid storage space of the cultivation container. 5. A cultivation container comprising a plurality of tiered cultivation containers, wherein a part or all of the cultivation containers are provided with a daylighting unit, and cultivation products that require light for growth are grown in the cultivation containers. The hydroponic cultivation system according to claim 1. 6. A storage space for storing a cultivation liquid, a growing space for growing a cultivated product with the cultivation liquid stored in the storage space, and a pressurizing means for pressurizing the cultivated product in the growing space from above. In a hydroponic cultivation system using a cultivation container, the pressurizing unit is disposed on a cultivation in the cultivation space,
A hydroponics system that pressurizes cultivated products only with its own weight. 7. A cultivation container having a storage space for storing cultivation liquid, a growing space for growing cultivation with the cultivation liquid stored in the storage space, and a rooting member between the two spaces for rooting the cultivation. In a hydroponic cultivation system including a step of growing a cultivated product using the method and a root cutting step of cutting the grown cultivated product, the root cutting step is performed with the rooting member in a vertical posture. Hydroponics system. 8. A cultivation container having a storage space for storing a cultivation liquid, a growing space for growing a cultivation liquid with the cultivation liquid stored in the storage space, and a rooting member between the two spaces for rooting the cultivation. In a hydroponic cultivation system including a step of growing a cultivated product using a method and a root cutting step of cutting a grown culture, the root cutting in the root cutting step includes a plurality of blades each including a large number of teeth. A hydroponic cultivation system characterized by performing relative sliding movement of members.