JP2019122285A - Water culture container - Google Patents

Abstract

To provide a water culture container comprising a structure which facilitates adjustment work or maintenance, and capable of stably supplying a culture fluid in a uniform state.SOLUTION: A water culture container 10 comprises: a first storage tank 30 for storing a culture fluid 71; a second storage tank 40 for storing the culture fluid 71; and a gutter 20 whose upstream end 20c is connected to the first storage tank 30 through a first dam 31 and whose downstream end 20d is connected to the second storage tank 40 through a second dam 41. On the gutter 20, a plant to be cultured is water cultured, the gutter 20 has a horizontal bottom surface, and a height of the first dam 31 is higher than a height of the second dam 41 in the water culture container 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a hydroponic cultivation container.

  Hydroponic cultivation of NFT (Nutriant Film Technique) system is already known (see, for example, Patent Document 1). In the NFT-type hydroponic culture, a culture solution is allowed to flow down in a thin film form on a floor surface having a gentle slope, and supplied to the root of the cultivated plant to cultivate the cultivated plant. Specifically, in this method, the root of the cultivated plant is positioned in the culture solution and in the air without using a solid medium, so that the root can receive nutrient water from the culture solution, and oxygen from the air Train them so that they can

  Patent Document 1 discloses an NFT-type hydroponic cultivation system. This hydroponic cultivation system includes a planting bed in a greenhouse, a liquid tank storing a culture solution, a liquid supplying unit for supplying the culture liquid of the liquid tank to the planting bed, and the culture liquid flowing out of the planting bed And a liquid return section to be returned to the liquid tank. The planting bed has a long tub-like bed main body having an upper surface opening and flowing the culture solution, and a lid member having a planting hole for holding a cultivated plant and closing the upper surface opening of the bed main body. Have. The bed main body is provided to be inclined in the longitudinal direction, and the culture solution supplied from the liquid supply unit to one end of the bed main body flows toward the other end of the bed main body.

  FIG. 9 shows a configuration example of a conventional NFT-type hydroponic cultivation apparatus. In this hydroponic cultivation apparatus 100, three weirs 120a, 120b, 120c inclined in the longitudinal direction are used, and the culture fluid supplied through the culture solution supply pipe 153 on the upstream side of each weir 120a, 120b, 120c is downstream It is designed to flow toward the side (the liquid depth is about 5 mm). At the downstream end of each weir 120a, 120b, 120c, a discharge pipe 155a, 155b, 155c is provided, and the culture fluid is discharged from each weir 120a, 120b, 120c to a discharge pipe 155a, 155b, 155c to collect the culture fluid It is collected in a tube 159 and is adapted to reflux in the culture fluid reservoir.

JP, 2017-112894, A

  However, in the conventional hydroponic cultivation apparatus shown in Patent Document 1 and FIG. 9, there are problems of (1) depletion of the culture solution, (2) uneven supply of the culture solution, and (3) overflow of the culture solution. there were. Each problem will be described below.

(1) Depletion of Culture Solution The conventional hydroponic cultivation apparatus has a structure in which the culture solution flows down the inclined weir. Therefore, if the supply of the culture solution is insufficient due to some kind of problem, the culture solution may run off from the weir, or it may evaporate in the middle of the weir, resulting in depletion of the culture solution in part or all of the weir was there. When the culture fluid in the pot was depleted, the grown plants were seriously damaged.

(2) Uneven Supply of Culture Fluid In the conventional hydroponic cultivation apparatus 100 shown in FIG. 9, the culture fluid supply pipe 153 is branched and connected upstream of the weirs 120a, 120b, 120c. In such a configuration, the flow path resistance in each branched flow path is different due to the difference in the position of the pipe or the weir. For this reason, the culture solution is not uniformly supplied to each weir 120a, 120b, 120c simply by simply opening the valve provided in each branch flow channel. Therefore, flow control valves 154a, 154b, 154c are provided in the branch supply pipes 153a, 153b, 153c branched from the culture solution supply pipe 153 toward the respective weirs 120a, 120b, 120c so that the culture solution can be uniformly distributed. The flow rate is adjusted for each of the weirs 120a, 120b and 120c. This operation is performed by trial and error, and requires many resetting operations. In particular, when the hydroponic cultivation apparatus 100 is restarted after the pump for culture fluid circulation stops, it is a very troublesome task. As described above, in the configuration in which the flow rate adjustment valves 154a, 154b, and 154c are required for each branch flow path, the adjustment operation and the maintenance are complicated.

(3) Overflow of culture solution In the conventional hydroponic cultivation apparatus 100 shown in FIG. 9, since the weirs 120a, 120b and 120c are inclined so as to descend from the upstream side to the downstream side, the weir bottom is downstream Located at the lowest level. In general, the cultivation pallets placed on the weirs 120a, 120b and 120c are so that the seedling is on the culture solution supply side (upstream side) and the mature strain is on the discharge side (downstream side) from the viewpoint of quality improvement of cultivated plants. Arranged in order. For this reason, a root of a matured strain on the downstream side of the weirs 120a, 120b, and 120c may be a form that stagnates the culture solution, and may form a dam lake together with the inclination of the weir. The culture solution discharge pipes 155a, 155b, and 155c have a closed pipe structure from the viewpoint of algae protection, so the discharge capacity is limited and it is easy to form a dam lake. In the condition where the dam lake is formed, an excess amount of culture fluid is supplied due to the problem of culture fluid supply, and when it flows down, the dam lake becomes full and the culture fluid exceeding the discharge capacity per hour is It will overflow from the sides of the weirs 120a, 120b, 120c. Overflow from the sides of the weirs 120a, 120b, and 120c was not originally supposed, and the floor of the hydroponic cultivation apparatus and the cultivation room was contaminated, making restoration difficult.

  The present invention has been made to solve the problems as described above, and provides a hydroponic cultivation container having a structure that facilitates adjustment work and maintenance, and can stably and uniformly supply a culture solution. The purpose is to

  In order to achieve the above object, the hydroponic cultivation container according to the present invention comprises a first storage tank for storing a culture solution, a second storage tank for storing the culture solution, and one end of the first storage tank. Hydroponic cultivation in which the cultivation plant is hydroponically cultured in the weir comprising: a weir connected via a first weir and the other end connected to the second reservoir via a second weir A vessel, the crucible having a horizontal bottom portion, wherein the height of the first crucible is higher than the height of the second crucible.

  As described above, in the hydroponic cultivation container according to the present invention, the upstream end of the weir is connected to the first storage tank via the first weir and the downstream end of weir is second via the second weir Connected to the reservoir, the weir having a horizontal bottom portion, the height of the first weir being higher than the height of the second weir. According to this configuration, the culture solution is supplied to the crucible in the first reservoir by the amount exceeding the first weir (overflow supply). Unlike the conventional method in which the bottom of the tub is inclined and the culture fluid is allowed to flow down, since a predetermined amount of culture fluid is always present in the tub, the culture fluid is effectively prevented from being depleted in the tub. Can.

  In the water culture culture container according to the present invention, the culture solution is discharged to the second storage tank by the amount exceeding the second weir in the weir (overflow discharge). For this reason, even if the roots of mature strains proliferate at the downstream side of the cocoon, or even if the inflow of the culture fluid into the cocoon changes rapidly, it is possible to effectively prevent the culture fluid from overflowing from the lateral part of the cocoon it can.

  Moreover, in the hydroponic cultivation container according to the present invention, the amount of the culture solution supplied to the pot is controlled by the height of the first pot, so each pot does not have to adjust the flow rate for each pot. It is easy to make the supplied culture solution uniform. Moreover, since it is the structure of the overflow supply, it is not necessary to adjust the supply amount of a culture solution by a flow rate control valve every each pipe | tube like before, and adjustment operation is easy.

  Further, in the hydroponic cultivation container according to the present invention, the cultivation plant is hydroponically grown in a rattan, and the cultivation pallet is not placed in the first storage tank and the second storage tank connected to the rattan, so Maintenance of the second storage tank and the second storage tank is easy.

  Moreover, in the hydroponic cultivation container which concerns on this invention, the height of the side part of the said ridge may become so high that it goes to an downstream end from an upstream end.

  With this configuration, the space between the cultivation pallet placed on the side surface of the bale and the bottom of the bale becomes larger toward the downstream side. A plurality of cultivation pallets are arranged in one bush, and as for the cultivation pallets arranged on the downstream side rather than the upstream side of the bushes, these cultivation pallets are grown in the growing condition as grown plants are matured. It can slide to the downstream side accordingly. For this reason, it can be adapted to growth of the root of a cultivation plant, and a culture solution and a root can be made to contact favorably.

  Further, in the hydroponic cultivation container according to the present invention, the second storage tank is connected to a first divided tank including a portion to which the crucible is connected and an inside space of the second storage tank. It is good also as composition which has a partition part divided into two with the 2nd division tank which does not contain a portion and the height of the partition part is lower than the height of the 2nd ridge.

  According to this configuration, the first divided tank can be used as a dirt deposition tank for depositing dirt such as algal scraps and scales. In the second reservoir, the culture solution containing no dirt beyond the partition is sent to the second divided tank and is recirculated through the culture solution discharge pipe. This makes it possible to prevent the contamination of the culture solution discharge pipe.

  Moreover, in the hydroponic cultivation container which concerns on this invention, it is good also as a structure provided with two or more said ridges, and arrange | positioning several said ridges in parallel between a said 1st storage tank and a said 2nd storage tank.

  The hydroponic cultivation container according to the present invention has a configuration (overflow supply) in which the culture solution supplied to the first storage tank is supplied to each crucible over the crucible, so that the culture solution is supplied to each crucible Adjustment of the amount can be performed simply by adjusting the amount of culture solution supplied to the first storage tank. As in the prior art, it is not necessary to adjust the flow rate of culture fluid to each weir with each flow control valve. Therefore, even if it is a structure provided with several wrinkles, it can adjust easily so that a culture solution may be supplied uniformly to each wrinkles.

  Further, the hydroponic cultivation container according to the present invention further includes a plurality of cultivation pallets closing the upper opening of the weir, each cultivation pallet has a planting hole, and a root base of the cultivation plant is in the planting hole It may be inserted and held.

  With this configuration, it is possible to shield light from the culture solution in the cocoon, and to prevent the reproduction of algae.

  According to the present invention, it is possible to provide a hydroponic cultivation container which has a structure which is easy to adjust and maintain, and which can stably and uniformly supply a culture solution.

It is a perspective view of a hydroponic cultivation apparatus concerning an embodiment of the invention. It is the sectional view on the AA line of FIG. It is the BB sectional view taken on the line of FIG. 1 (state without a culture solution). It is the CC sectional view taken on the line of FIG. 1 (state without a culture solution). It is a perspective view which shows a mode that hydroponic cultivation of a cultivation plant is carried out using the hydroponic cultivation apparatus of FIG. It is the DD sectional view taken on the line of FIG. (A) is the EE sectional view taken on the line of FIG. 6, (b) is the FF sectional view taken on the line of FIG. It is a perspective view of the conventional hydroponic cultivation apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the hydroponic cultivation apparatus 1 according to the embodiment of the present invention is a hydroponic cultivation container 10 and a circulating supply means which is a circulating supply means for circulatingly supplying the culture fluid 71 to the hydroponic cultivation container 10. And a system 50.

First, the hydroponic cultivation container 10 will be described.
The hydroponic cultivation container 10 includes a first storage tank 30 for storing the culture solution 71, a second storage tank 40 for storing the culture solution 71, and a weir 20. The upstream end 20 c of the weir 20 is connected to the first storage tank 30 via the first weir 31, and the downstream end 20 d is connected to the second reservoir 40 via the second weir 41. In the weir 20, the cultivated plants 70 are adapted to hydroponic cultivation.

  The first storage tank 30 stores the culture fluid 71 supplied to the crucible 20, and the second storage tank 40 stores the culture fluid 71 discharged from the crucible 20. That is, the first storage tank 30 and the second storage tank 40 function as a header tank that adjusts the supply amount of the culture fluid 71 to the crucible 20.

  The first storage tank 30 is a box-shaped container having an elongated rectangular solid shape and an open upper surface. Specifically, the first storage tank 30 has a rectangular bottom plate 30a, side plates 30b and 30c which are erected from the long edge of the bottom plate 30a, and an end which is erected from the short edge of the bottom plate 30a. It has board 30d and 30e.

  The second reservoir 40 is a box-shaped container having an elongated rectangular parallelepiped shape and an open upper surface. Specifically, the second storage tank 40 has a rectangular bottom plate 40a, side plates 40b and 40c standing from the long edge of the bottom plate 40a, and an edge rising from the short edge of the bottom plate 40a. And plates 40d and 40e.

  As shown in FIG. 2, the height of the first weir 31 is higher than the height of the second weir 41. Specifically, as shown in FIGS. 3 and 4, for example, with reference to the horizontal bottom portion 20 a of the weir 20, the height H 1 of the first weir 31 is the height of the second weir 41. It is higher than H2. That is, H1> H2. As a result, the culture fluid 71 stored in the weir 20 can not flow back to the first storage tank 30.

  As shown in FIG. 2, the second storage tank 40 includes an internal space of the second storage tank 40, a first divided tank 43 including a portion to which the weir 20 is connected, and a portion to which the weir 20 is connected. It has the partition part 42 divided into 2 by the 2nd division tank 44 which does not contain.

  The height of the partition portion 42 is lower than the height of the second weir 41. Specifically, as shown in FIG. 4, for example, with reference to the horizontal bottom surface 20 a of the weir 20, the height H 3 of the partition 42 is lower than the height H 2 of the second weir 41. There is. That is, H2> H3. As a result, the first divided tank 43 functions as a soil deposition tank for depositing soil such as algal scraps and scales, and the culture solution discharge pipe 55 can be prevented from being polluted. The culture solution 71 containing the dirt stored in the first divided tank 43 is discharged through the drain pipe 57.

  In the second storage tank 40, since the height of the partition part 42 is lower than the height of the second weir 41, the culture fluid 71 without dirt stored in the upper layer of the first divided tank 43 The water is discharged to the second divided tank 44 without flowing back to 20. That is, the culture fluid 71 from which the filth is removed is sent to the second divided tank 44. The culture solution 71 from which the dirt has been removed passes through the culture solution discharge pipe 55 from the second divided tank 44 and is returned to the culture solution tank 51 described later (see FIG. 1).

  As shown in FIGS. 2 to 4, the crucible 20 has an elongated rectangular horizontal bottom portion 20 a and side portions 20 b and 20 b vertically rising from both longitudinal side edges of the bottom portion 20 a. . As shown in FIG. 2, the height of the side surface portion 20 b of the weir 20 is increased in a tapered manner toward the downstream end 20 d from the upstream end 20 c of the weir 20.

  As shown in FIGS. 2 and 3, the upstream end 20 c of the weir 20 is connected to the side plate 30 b of the first storage tank 30. In the side plate 30b of the first storage tank 30, a first weir 31 which is cut out in a rectangular shape from the upper end of the side plate 30b is formed in a portion where the weir 20 is connected. The culture solution 71 supplied to the first storage tank 30 is such that the amount supplied beyond the first weir 31 is supplied to the weir 20 over the first weir 31 (overflow Supply).

  As shown in FIGS. 2 and 4, the downstream end 20 d of the weir 20 is connected to the side plate 40 b of the second storage tank 40. In the side plate 40b of the second storage tank 40, a second weir 41 which is cut out in a rectangular shape from the upper end of the side plate 40b is formed in a portion where the weir 20 is connected. The culture solution 71 supplied to the weir 20 is such that the portion supplied beyond the second weir 41 is discharged to the second reservoir 40 over the second weir 41 (overflow Discharge).

  As shown in FIG. 3 and FIG. 4, the cross-sectional shape of the weir 20 is U-shaped, but it is not limited to this, and it may be any shape such as U-shaped or V-shaped.

  As shown in FIG. 1, in the hydroponic cultivation apparatus 1 according to the present embodiment, three weirs 20 are arranged in parallel between the first storage tank 30 and the second storage tank 40. The number of weirs 20 is not limited to three, and may of course be any number of one or more.

  The first weirs 31 provided at the connection between each weir 20 and the first storage tank 30 have the same shape, and the first weir 31 provided at the connection between each weir 20 and the second storage tank 40 The two crucibles 41 all have the same shape.

  The first weir 31 and the second weir 41 may change in shape every weir 20. For example, by changing the width of the rectangular notch that forms the first weir 31, the inflow of the culture fluid 71 flowing into the weir 20 can be adjusted. Further, the discharge amount of the culture fluid 71 discharged to the second storage tank 40 can be adjusted by changing the width of the rectangular notch forming the second weir 41.

  In the present embodiment, the depth of the culture solution 71 can be, for example, about 2 cm along the entire length of the crucible 20. The depth of the culture solution 71 in the weir 20 can be easily changed by adjusting the heights of the first weir 31 and the second weir 41. Thereby, according to the kind of cultivation plant 70, the liquid depth of culture fluid 71 can be set up optimal.

  As shown in FIG. 1, the circulation supply system 50 has a culture solution tank 51 for storing the culture solution 71. Then, the circulation supply system 50 supplies the culture solution 71 from the culture solution tank 51 to the first storage tank 30, and is stored in the second storage tank 40 from the first storage tank 30 through the crucible 20. The culture solution 71 is returned to the culture solution tank 51.

  Specifically, the circulation supply system 50 includes a pump 52, a culture solution supply pipe 53, and a culture solution discharge pipe 55. The culture solution 71 stored in the culture solution tank 51 is supplied to the first storage tank 30 through the culture solution supply pipe 53 by the pump 52. In the first divided tank 30, the culture fluid 71 flowing in beyond a predetermined level is returned to the culture fluid tank 51 through the overflow pipe 59. The culture solution 71 discharged from the weir 20 to the second divided tank 44 of the second storage tank 40 is returned to the culture solution tank 51 through the culture solution discharge pipe 55. Also, in the second divided tank 44, the culture fluid 71 flowing over the predetermined level is discharged so as to join the culture fluid discharge pipe 55 through the overflow pipe 56, and is returned to the culture liquid tank 51. It has become.

  FIG. 5 is a perspective view showing the state of hydroponic cultivation of a cultivated plant 70 using the hydroponic cultivation apparatus 1. FIG. 5 does not show the circulation supply system 50 for simplicity. The hydroponic cultivation apparatus 1 is installed, for example, in a plant factory, and the cultivated plants 70 are hydroponically grown in the hydroponic cultivation container 10 under artificial light (such as LED).

  As shown in FIG. 5, the hydroponic cultivation apparatus 1 further includes a plurality of cultivation pallets 60 closing the top opening of the crucible 20. Each cultivation pallet 60 has a planting hole 61, and the root base 70b of the cultivation plant 70 is inserted into the planting hole 61 and held.

  The cultivation pallet 60 is a rectangular plate having a width wider than the width of the weir 20 (the distance between the both sides 20b, 20b) so as to be placed on the both sides 20b, 20b of the weir 20. A planting hole 61, which is a through hole, is provided approximately at the center. The cultivation pallet 60 is preferably formed of a material having durability, weather resistance, high reflectivity, cold resistance, lightness and rigidity.

  6 is a cross-sectional view taken along line D-D in FIG. 5, FIG. 7 (a) is a cross-sectional view taken along line E-E in FIG. 6, and FIG. 7 (b) is a cross-sectional view taken along line F-F in FIG. is there. As shown in FIG. 6, six cultivation pallets 60 are continuously arranged without gaps on both side surfaces 20b and 20b of one crucible 20, and the upper opening of the crucible 20 is closed. . Thereby, since the culture solution 71 is shielded from light, algae is not generated in the weir 20, and the transpiration of the culture solution 71 is suppressed. The number of cultivation pallets 60 that can be placed on one crucible 20 is not limited to six, and the length of the crucible 20 in the longitudinal direction and the size of the cultivation pallet 60 are set so as to be an arbitrary number. can do.

  The cultivation pallet 60 is mounted on the both side surface portions 20 b of the crucible 20 so as to be slidable in the longitudinal direction. In FIG. 6, the cultivated plants 70 held on the cultivation pallet 60 placed in the longitudinal direction of the crucible 20 are arranged such that the growth process proceeds from the upstream side to the downstream side of the crucible 20 There is. In this arrangement state, for example, they are grown for one or several days, and the fully grown most downstream cultivation pallet 60 is removed and harvested. Next, the remaining five cultivation pallets 60 are slid downstream, and the cultivation pallets 60 holding the seedlings 70 are placed on the most upstream side. Thus, while harvesting the grown plant 70 which has become a growing strain, it is possible to add new seedlings and continuously perform hydroponic cultivation.

  As shown in FIG. 7, when planting the cultivated plant 70 in the weir 20, the root base 70b of the cultivated plant 70 is held by inserting the urethane cube 62 used as a seeding culture medium as it is in the planting hole 61 as it is. Thus, the cultivated plants 70 are held by the cultivation pallet 60 so that the roots 70 a of the cultivated plants 70 are located below the cultivation pallet 60 and the leaves 70 c are located above the cultivation pallet 60. Thereafter, the root base 70 b of the cultivated plant 70 is sandwiched by the urethane cubes 62 during the period until harvest. The urethane cube 62 may be stably held in the planting hole 61. The planting hole 61 preferably has a diameter of 22 mm, for example, and the urethane cube 62 preferably has a side of 30 mm, for example.

  The first storage tank 30 and the second storage tank 40 have a box-like structure having a rectangular parallelepiped internal space, and the cultivation pallet 60 is not placed and is disposed on both sides of the weir 20, so cleaning Maintenance is easy. Furthermore, a removable lid may be provided for the purpose of preventing the generation of algae due to the evaporation of culture solution 71 and the penetration of light in this portion.

  Each component such as the weir 20, the first storage tank 30, the second storage tank 40, and the cultivation pallet 60 in the hydroponic cultivation container 10 is made of a synthetic resin, but a metal designed for acid resistance and alkali resistance It may be made of a material.

  Next, functions and effects will be described.

  As described above, in the hydroponic cultivation container 10 according to the present embodiment, the upstream end 20 c of the weir 20 is connected to the first storage tank 30 via the first weir 31 and the downstream end 20 d of the weir 20 is the first Connected to the second storage tank 40 through the second weir 41, the weir 20 has a horizontal bottom portion 20a, and the height of the first weir 31 is higher than the height of the second weir 41 . By this configuration, the culture fluid 71 is supplied to the crucible 20 by the amount supplied in the first storage tank 30 beyond the first crucible 31 (overflow supply). As in the prior art, the bottom of the crucible is not inclined to allow the culture solution to flow down, but since a predetermined amount of culture solution 71 is always present in the crucible 20, it is effective to deplete the culture solution 71 in the crucible 20. Can be prevented. For example, even if the supply of the culture solution 71 is stopped, the culture solution 71 in the crucible 20 can be prevented from being depleted for about half a day.

  Further, in the hydroponic cultivation container 10 according to the present embodiment, the culture solution 71 is discharged to the second storage tank 40 by the amount supplied by the weir 20 beyond the second weir 41 by the above configuration ( Overflow discharge). Therefore, even if the roots of mature strains grow heavily downstream of the weir 20, or even if the inflow of the culture fluid 71 into the weir 20 changes rapidly, the culture fluid 71 overflows from the side portion 20b of the weir 20. Can be prevented.

  Moreover, in the hydroponic cultivation container 10 according to the present embodiment, since the amount of the culture fluid 71 supplied to the crucible 20 is controlled by the height of the first crucible 31, the flow rate is adjusted for each crucible 20. There is no need, and uniform supply of the culture solution 71 to each crucible 20 can be easily realized. In addition, because of the configuration of the overflow supply, it is not necessary to adjust the supply amount of the culture solution by the flow rate adjusting valve for each bottle as in the prior art, and the adjustment operation is easy.

  In the hydroponic cultivation container 10 according to the present embodiment, the first storage tank 30 and the second storage tank 40 connected to the pot 20 are the cultivation pallets 60 in which the cultivation plant 70 is hydroponically grown in the pot 20. Is not placed, maintenance such as cleaning of the first storage tank 30 and the second storage tank 40 is easy.

  Moreover, as for the hydroponic cultivation container 10 which concerns on this embodiment, the height of the side part 20b of the weir 20 is so high that it goes to the downstream end 20d from the upstream end 20c.

  With this configuration, the space between the cultivation pallet 60 placed on the side surface portion 20b of the crucible 20 and the bottom surface portion 20a of the crucible 20 becomes larger toward the downstream side. A plurality of cultivation pallets 60 are arranged in one crucible 20, and in the cultivation pallets 60 arranged on the downstream side of the upstream side of the crucible 20, the cultivation plants 70 are matured Thus, it is made to slide downstream according to the growing condition. For this reason, the cultivation pallet 60 can be arranged at an optimal position in accordance with the growth of the roots 70 a and the like of the cultivation plant 70.

  Moreover, in the hydroponic cultivation container 10 according to the present embodiment, the second storage tank 40 includes the internal space of the second storage tank 40, the first divided tank 43 including the portion to which the pot 20 is connected, and the pot A second divided tank 44 which does not include a portion to which 20 is connected, and a partition part 42 which divides into two, and the height of the partition part 42 is lower than the height of the second ridge 41.

  According to this configuration, the first divided tank 43 can function as a dirt deposition tank for depositing dirt such as algal scraps and scales. In the second storage tank 40, only the culture solution 71 containing no dirt beyond the partition part 42 is sent to the second divided tank 44, and is returned to the culture solution tank 51 through the culture solution discharge pipe 55. Thereby, the contamination of the culture solution discharge pipe 55 can be prevented.

  Moreover, in the hydroponic cultivation container 10 according to the present embodiment, a plurality of weirs 20 are arranged in parallel between the first storage tank 30 and the second storage tank 40. Even in such a configuration, the present hydroponic cultivation container 10 has a configuration in which the culture fluid 71 supplied to the first storage tank 30 is supplied to each weir 20 beyond the first weir 31 (overflow Since it is supply), adjustment of the supply amount of the culture solution 71 to each weir 20 can be performed simply by adjusting the supply amount of the culture solution 71 to the first storage tank 30. As in the prior art, it is not necessary to adjust the flow rate of culture fluid to each weir with each flow control valve. Therefore, even in the configuration including the plurality of weirs 20, the culture solution 71 can be easily adjusted to be uniformly supplied to the respective weirs 20.

  Moreover, in the hydroponic cultivation container 10 which concerns on this embodiment, each cultivation pallet 60 further includes the several planting pallets 60 which close the upper opening of the coffin 20, and each cultivation pallet 60 has rooted planting hole 61, The root base 70b of the cultivation plant 70 Are inserted into the planting hole 61 and held. With such a configuration, it is possible to shield light from the culture solution 71 in the weir 20, to prevent the growth of algae, and to suppress the transpiration of the culture solution 71. In addition, the cultivation pallet 60 can slide on the both side portions 20 b of the crucible 20.

  As described above, the present invention has an effect that the culture solution can be stably and uniformly supplied, as well as having a structure that facilitates adjustment work and maintenance, and is useful for the entire hydroponic culture container is there.

DESCRIPTION OF SYMBOLS 1 Hydroponic cultivation apparatus 10 Hydroponic cultivation container 20 樋 20a Bottom part 20b Side part 30 1st storage tank 30a Bottom plate 30b, 30c Side plate 30d, 30e End plate 31 1st ridge 40 2nd storage tank 40a Bottom plate 40b, 40c side plate 40d, 40e end plate 41 second weir 42 partition 43 first division tank 44 second division tank 50 circulation supply system (circulation supply means)
51 culture solution tank 52 pump 53 culture solution supply pipe 54 flow control valve 55 culture solution discharge pipe 56, 59 overflow pipe 57 drain pipe 58 drain pipe 58 cultivation pallet 61 planting hole 62 urethane cube 70 cultivation plant 70a root 70b root base 71 culture solution

Claims (5)

A first reservoir for storing a culture solution,
A second reservoir for storing the culture solution,
One end is connected to the first reservoir via the first weir and the other end is connected to the second reservoir via the second weir,
A hydroponic cultivation container in which the cultivation plants are hydroponically cultivated in the weir.
The hydroponic cultivation container according to claim 1, wherein the weir has a horizontal bottom, and the height of the first weir is higher than the height of the second weir.   The hydroponic cultivation container according to claim 1, wherein the height of the side portion of the weir is higher from the upstream end toward the downstream end.   The second storage tank is formed by dividing an internal space of the second storage tank into a first divided tank including a portion to which the weir is connected and a second divided tank not including a portion to which the weir is connected. The hydroponic cultivation container according to claim 1 or 2, further comprising: a partition part to be divided, wherein the height of the partition part is lower than the height of the second ridge.   The plurality of crucibles are provided, and the plurality of crucibles are disposed in parallel between the first storage tank and the second storage tank, according to any one of claims 1 to 3. Hydroponic containers.   The method further comprises a plurality of cultivation pallets closing the upper opening of the weir, each cultivation pallet having a planting hole, and a root base of the cultivation plant is inserted and held in the planting hole. The hydroponic cultivation container of any one of 1-4.

Images