JP6559508B2 - Drainage device in plant cultivation equipment - Google Patents

Description

  The present invention is used for hydroponic cultivation of plants using artificial light sources such as LED lighting devices in plant factories, vegetable factories, seedling devices, and the like, and also for hydroponic cultivation using sunlight in greenhouses, greenhouses, etc. More particularly, the present invention relates to a drainage device at the bottom of a water tank of these plant cultivation devices.

  As shown in FIG. 1, the plant cultivation device (1) includes a hydroponic tank (2) for storing hydroponic water containing moisture and nutrients (hereinafter simply referred to as “nourished water”), and an upper end of the tank. And a cultivation bed (3) for closing the opening and cultivating the plant. The water culture tank (2) is placed on the cultivation rack (4) on a plurality of mounting portions (5) provided in multi-stages at intervals in the vertical direction, and the cultivation floor (3) is a water culture tank ( It is movable in the left and right direction with respect to 2).

  The cultivation rack (4) has, for example, a lighting device (6) having a light source such as an LED lamp and disposed above the placement unit (5), a water supply side nutrient tank (8), a nutrient water supply pipe ( 9) and a nutrient water supply device (7) having a pump (not shown) for supplying nutrient water in the nutrient water tank (8) to the nutrient tank (2) through the nutrient water supply pipe (9). The used nutrient water is temporarily stored in the drainage-side nutrient tank (24) through the drain pipe (23) from the conventional drainage device attached to the drainage port opened at the bottom of each stage of the nutrient tank (2). Then, the water is returned to the water supply side nourishment tank (8) through the nourishment adjusting machine (25) that compensates for the insufficient nutrient, and is resupplied by the pump. In this way, normally, the nutrient water is circulated so that a predetermined amount of nutrient water stays in the nutrient tank (2) at each stage. In addition, during regular cleaning, it is necessary to completely drain the nutrient water from the nutrient tank (2).

  In general, the position of the drainage port (11) in the plant cultivation apparatus is predetermined (that is, a nutrient water supply port is provided on one end side of the water tank and a drainage port is provided on the other end side). Since the installation position varies from construction site to construction site due to various circumstances, it may be difficult to connect the drain port to the drain pipe.

  In addition, it was necessary to remove the drainage device from the nutrient tank in order to completely drain the water from the nutrient tank to prevent the accumulation of impurities, the occurrence of slime, the growth of algae and fungi.

  Moreover, as shown in FIG. 7, the drainage device in the plant cultivation device (51) such as a flower pot or a planter includes a donut-like base portion (52a) and a cylindrical portion (52b) rising from the center of the upper surface. A drainage device (57) composed of a drainage device body (52) and a cap (53) covering the drainage device body (52) is concentric with the drainage port (54) of the same wall on the bottom wall of the plant cultivation device (51). Has been proposed (see Patent Document 1). A plurality of water cutouts (55) are formed on the lower surface of the cap (53), and water poured into the soil (56) in the plant cultivation device (51) Then, when it enters the drainage device (57) and the water level reaches the upper end of the cylindrical portion (52b), it flows into the drainage port (54) and flows into the inside.

  However, in the drainage device described in Patent Document 1, even when trying to completely drain the water stored in the bottom of the plant cultivation apparatus (51) or the cleaning water during cleaning, the water is removed due to the above structure. It was unavoidable that some of them remained, and it was necessary to remove the drainage device (57) from the plant cultivation device (51) in order to discharge all of this.

JP 2010-104277 A

  In view of the above circumstances, the object of the present invention is a plant cultivation device that can achieve complete drainage of water without performing the troublesome task of removing the drainage device from the plant cultivation device during cleaning or the like. It is to provide a drainage device.

  Another object of the present invention is that the position of the drain outlet (11) is determined in advance, and the drain outlet is connected to the drain pipe even if the installation position of the drain pipe is different for each construction site due to various circumstances. It is an object of the present invention to provide a drainage device that can be connected to the vehicle without difficulty.

  In order to achieve the above object, the present invention comprises the following aspects.

  1) The upper cylinder (13) with the upper flange (13a) at the center of the height is below the upper flange (13a) at the drainage port (11) opened in the bottom wall of the water tank (2). The upper cylindrical body (13) is fixed to the mouth edge (14) of the drain port (11) through the part of the upper flange (13a), and the upper flange (13a) is connected to the inside and outside of the upper cylindrical body (13). A water flow window (16) communicating with the inner end of the water flow area (15) (15 ') is provided in the peripheral wall of the upper cylindrical body (13). An internal water blocking cylinder (17) or an external water blocking cylinder (17 ') that closes the water flow window (16) is detachably disposed inside or outside the upper cylinder (13). Removal of the body (17) (17 ') opens the water flow window (16), and nutrient water flows down from the drainage port (11) through the water flow area (15) (15') and the water flow window (16) The drainage device in the plant cultivation device made as described above.

  2) Below the drain port (11) opened in the bottom wall of the water tank (2), the lower cylinder (12) with the lower flange part (12a) on the outer surface of the upper end is arranged, and the upper part is at the center of the height. The upper cylindrical body (13) having the flange portion (13a) is passed through the drain port (11) at a portion below the upper flange portion (13a) and fixed to the lower cylindrical body (12), thereby The mouth edge (14) of the mouth (11) is sandwiched between the upper and lower flange parts (13a) and (12a), and the upper and lower cylinders (13) and (12) are fixed to the mouth edge part (14). 13a) is provided with a notch water passage (15) or a groove water passage (15 ') that communicates the inside and outside of the upper cylinder (13), and a water passage (15) is provided on the peripheral wall of the upper cylinder (13). ) (15 ') A water flow window (16) communicating with the inner end is opened, and the water blocking window (16) is closed inside or outside the upper cylinder (13). The water cylinder (17 ') is detachably disposed, and the water flow window (16) is opened by removing the water blocking cylinder (17) (17'). Water was made to flow down from the passing water (15) (15 ') and Tsusuimado (16) a through and water outlet (11), the drainage device in the plant cultivation device.

  3) A lower cylinder having a lower flange portion (12a) on the outer surface of the upper end and a female thread portion (12b) on the inner peripheral surface of the upper end portion under the drain port (11) opened in the bottom wall of the water tub (2) An upper cylinder (13) having a body (12) and having an upper flange portion (13a) at the center of the height and a male threaded portion (13b) on the lower outer peripheral surface is located below the upper flange portion (13a). The male and female threaded portions (12b) (13b) are screwed together through the drainage port (11) at the portion, so that the edge (14) of the drainage port (11) is connected to the upper and lower flange portions (13a) (12a ) And the upper and lower cylinders (13) and (12) are fixed to the mouth edge (14), and the upper flange (13a) communicates with the inside and outside of the upper cylinder (13). (15) or a grooved water flow area (15 '), a water flow window (16) communicating with the inner end of the water flow area (15) (15') is established on the peripheral wall of the upper cylindrical body (13), An internal water blocking cylinder (17) or an external water blocking cylinder (17 ') that closes the water flow window (16) is provided inside or outside the upper cylinder (13). The water flow window (16) is opened by removing the water blocking cylinder (17) (17 '), and the nutrient water passes through the water flow area (15) (15') and the water flow window (16). The drainage device in the plant cultivation device, which is made to flow down from the drainage port (11).

4) The inner water blocking cylinder (17) is inserted into the upper cylinder (13) and supported by the inner protrusion (19) provided on the lower cylinder (12). The drainage device in the plant cultivation apparatus according to 2) or 3) above, wherein the water flow window (16) is opened by extraction of 17).

  5) The external water blocking cylinder (17 ') is externally attached to the upper cylinder (13) and is received on the upper surface of the bottom wall of the water tank (2), and is passed by removing the water blocking cylinder (17'). The drainage device in the plant cultivation apparatus according to any one of 1) to 3), wherein the water window (16) is opened.

  6) The notched water communication area (15) communicating the inside and outside of the upper cylinder (13) is formed by notching one or more upper flange portions (13a), 1) to 5 above. The drainage device in the plant cultivation apparatus according to any one of the above.

  7) The groove-shaped water passage area (15 ′) communicating between the inside and the outside of the upper cylindrical body (13) is formed by providing one or a plurality of grooves on the lower surface of the upper flange portion (13a). The drainage apparatus in the plant cultivation apparatus in any one of) -5).

  8) A filtration mesh (18) is placed on the bottom wall of the water tub (2) so as to surround the drainage device, and a groove (18a) is provided on the outer periphery of the lower end of the mesh (18), and is collected in the groove (18a). The drainage device in the plant cultivation apparatus according to any one of 1) to 7), which is configured to remove impurities.

9) A plurality of internal water blocking cylinders (17) or external water blocking cylinders (17 ') of different heights are prepared, and the depth of the water stored in the water tank (2) can be adjusted by replacing them. The drainage apparatus in the plant cultivation apparatus in any one of said 1) -8) which was made.

  Since the drainage device in the plant cultivation apparatus according to the present invention is configured as described above, the water-stop cylinder (17) is inserted into the upper cylinder (13) or the water-stop cylinder ( 17 ') is attached to the outside of the upper cylinder (13), the water flow window (16) is closed, and the nutrient water is allowed to overflow from the upper end of the drainage device. You can save it. In addition, when washing or the like, remove the water blocking cylinder (17) or water blocking cylinder (17 ') from the upper cylinder (13) and open the water flow window (16), so that the nutrient water can flow through (15 ) And the water flow window (16), it is allowed to flow down from the drain port (11). The slight amount of nutrient water remaining in the nutrient tank (2) also flows into the drain outlet (11) from the lower end of the water flow window (16) through the water flow area (15). Therefore, according to this invention, complete drainage of water can be achieved without the troublesome work of removing the drainage device from the plant cultivation device during cleaning or the like.

  In general, the position of the drainage port (11) in the plant cultivation apparatus is predetermined (that is, a nutrient water supply port is provided on one end side of the water tank and a drainage port is provided on the other end side). Since the installation position varies from construction site to construction site due to various circumstances, it may be difficult to connect the drain port to the drain pipe. In the present invention, the position where the drainage port is drilled in the bottom wall of the water culturing tank (2), and the optimum place for connecting the drainage port to the drain pipe (depth direction in the bottom wall of the water culturing tank (2) shown in FIG. 1) The drainage device according to the present invention can be attached to a desired position on the bottom wall of the nutrient tank (2) by appropriately adjusting to the above.

  In addition, by placing a filtration mesh (18) having a groove (18a) on the outer periphery of the lower end on the bottom wall of the water culture tank (2), impurities accumulated in the groove (18a) during the long-term circulation of the nutrient water Can be easily removed from the water circulation system, and the accumulation of impurities, the occurrence of slime, the growth of algae and fungi, which cause failure of the water supply circulation system, can be prevented.

  In addition, by preparing multiple inner and outer water stop cylinders (17) (17 ') of different heights and using them as appropriate, the depth of the nutrient water stored in the nutrient tank (2) can be adjusted. it can.

It is a front view which shows the whole plant cultivation apparatus. It is a vertical sectional view showing the drainage device in the bottom of the water culture tank of the plant cultivation device, and shows the state where the nutrient water overflows from the upper end of the drainage device and flows down inside. It is a vertical sectional view showing the drainage device in the bottom of the water culture tank of the plant cultivation device, and shows the state where the total amount of nutrient water is discharged through the drainage device. In a modification of the present invention, an external water blocking cylinder (17 ′) for closing the water flow window (16) is detachably disposed outside the upper cylinder (13), and the upper cylinder (13). ) Is formed by providing a groove on the lower surface of the upper flange portion (13a). It is sectional drawing which follows the VV line in FIG. It is sectional drawing which follows the VI-VI line in FIG. It is a vertical sectional view showing a conventional drainage device in a plant cultivation device such as a flower pot or a planter.

  Embodiments of the present invention will be described below with reference to the drawings.

  Fig. 1 shows the whole plant cultivation device, and Fig. 2 and Fig. 3 show the drainage device at the bottom of the water culture tank of the plant cultivation device. Fig. 2 shows that the nutrient water overflows from the upper end of the drainage device. FIG. 3 shows a state in which the total amount of dissolved water is discharged through the drainage device.

  In FIG. 1, a plant cultivation apparatus (1) includes a nutrient tank (2) for storing hydroponics nutrient water containing moisture and nutrients, and a cultivation floor for closing the upper end opening of the tank (2) and growing plants. (3). The water culture tank (2) is placed on the cultivation rack (4) on a plurality of mounting portions (5) provided in multi-stages at intervals in the vertical direction, and the cultivation floor (3) is a water culture tank (2 ) In the left-right direction.

  The cultivation rack (4) has, for example, a lighting device (6) having a light source such as an LED lamp and disposed above each mounting portion (5), a nutrient water tank (8), a nutrient water supply pipe (9 ) And a nutrient water supply device (7) having a pump (not shown) for supplying the nutrient water in the tank (8) to the nutrient tank (2) through the nutrient water supply pipe (9). The used nourishing water is supplied to the drainage side nourishing tank (24) through the drainage pipe (23) from the drainage device (22) according to the present invention attached to the drainage port opened at the bottom of each stage of the nourishment tank (2). Is stored once in the water, returned to the water supply-side water supply tank (8) through the water supply adjuster (25) that compensates for the insufficient nutrient, and supplied again by the pump.

  2 and 3, a drain port (11) is opened at a required position on the bottom wall of the water tank (2), and a lower cylindrical body (12) concentrically with the drain port (11) is provided below the drain port (11). ) Are arranged vertically, and a cylindrical upper cylindrical body (13) is arranged vertically on the drain outlet (11) concentrically therewith. The lower cylindrical body (12) is provided with a lower flange portion (12a) on the outer surface at the upper end and an internal thread portion (12b) on the inner peripheral surface of the upper end portion. The upper cylindrical body (13) is provided with an upper flange portion (13a) at the center of the height and a male screw portion (13b) on the lower outer peripheral surface. A portion below the upper flange portion (13a) in the upper cylindrical body (13) is passed through the drain port (11) from above, and the male screw portion (13b) is the female screw portion (12b) of the lower cylindrical body (12). And screwed together. By this screwing, the edge (14) of the drainage port (11) is sandwiched between the upper and lower flange portions (13a) (12a) and the lower cylinder (12) and the upper cylinder (13) are connected. It is fixed to the lip (14). A rubber packing (20) is interposed between the lower flange portion (12a) and the edge portion (14) of the drain port (11), and the two are watertight.

  As shown in FIG. 5, the upper flange portion (13a) is provided with four notch-shaped water passage areas (15) made of a removal portion at equal intervals in the circumferential direction. The inside and outside of the body (13) are in communication. The notch-shaped water passage (15) is formed by notching the upper flange portion (13a) at four locations, but the number of the notch-shaped water flow regions (15) is usually about 1-10. This is not a limitation. On the peripheral wall of the upper cylindrical body (13), water flow windows (16) are provided at positions corresponding to the four water flow areas (15), and the lower ends of the water flow windows (16) are located in the corresponding water flow areas (15). Each communicates with the inner end.

  As shown in FIG. 2, a cylindrical internal water blocking cylinder (17) that closes all the water flow windows (16) of the upper cylinder (13) is closely fitted inside the upper cylinder (13). The upper cylindrical body (13) is supported by an inward projection (19) provided annularly near the lower end of the inner surface. The internal water blocking cylinder (17) has a predetermined height, and its upper end protrudes above the upper cylinder (13).

  In this state, nourishing water accumulated in the water tank (2) is prevented from flowing through the water flow window (16) by the internal water blocking cylinder (17), so from the upper end of the internal water blocking cylinder (17). After overflowing inward and flowing down the upper cylindrical body (13) and the lower cylindrical body (12), it is circulated from the bottom of the plant cultivating apparatus to the nutrient tank (2) by a pump.

  When draining the entire amount of the nutrient water from the nutrient tank (2), as shown in FIG. 3, pull out the inner water blocking cylinder (17) upward from the upper cylinder (13) and open all the water flow windows (16). When the water is opened, the nutrient water flows down through the water flow area (15) and the water flow window (16) into the upper cylinder (13) and the lower cylinder (12), and remains slightly in the water tank (2). Completely drained water is also achieved through the water flow area (15) and from the lower end of the water flow window (16) to the lower part of the water discharge port (11).

  4 and 6 show a modification of the present invention. In this example, a cylindrical external water blocking cylinder (17 ′) that closes the water flow window (16) is externally attached to the upper cylinder (13) and is received on the upper surface of the bottom wall of the water tank (2). The water flow window (16) can be opened by removing the water blocking cylinder (17 '). In addition, the groove-shaped water passage area (15 ') that communicates the inside and outside of the upper cylindrical body (13) is formed by providing four wide grooves in the radial direction on the lower surface of the upper flange portion (13a). . The number of the groove-like water passage areas (15 ') is usually about 1 to 10, but this is not limited. Other configurations are the same as described above.

  As the internal water blocking cylinder (17) or the external water blocking cylinder (17 ′), a plurality of different heights are prepared, and these are appropriately selected and used to accumulate in the water tank (2). The depth of the water can be adjusted.

  As shown in FIG. 2, a cylindrical stainless steel filter mesh (18) is disposed on the upper surface of the bottom wall of the water culture tank (2) so as to surround the drainage device according to the present invention, and the lower end of the mesh (18). A groove (18a) is provided on the outer periphery. The filtration mesh (18) is for removing impurities (21) accumulated in the groove (18a) during the long-term circulation of nutrient water. Such impurities are a cause of failure of the circulation system of the nutrient water and may cause the occurrence of slime and the growth of algae and fungi, so they are removed from the nutrient water circulation system.

(1): Plant cultivation equipment
(2): Water tank
(3): Cultivation floor
(11): Drain port
(12): Lower cylinder
(12a): Lower flange
(12b): Female thread
(13): Upper cylinder
(13a): Upper flange
(13b): Male thread
(14): Mouth edge
(15): Notched water area
(15 '): Grooved water area
(16): Water flow window
(17): Internal water blocking cylinder
(17 '): External water blocking cylinder
(18): Filtration mesh
(18a): Groove
(19): Inward projection
(20): Rubber packing

Claims (9)

  The upper cylindrical body (13) having the upper flange part (13a) at the center of the height is located below the upper flange part (13a) in the drainage port (11) opened in the bottom wall of the water culture tank (2). The upper cylinder (13) is fixed to the rim (14) of the drain port (11) by passing through the upper flange (13a), and the upper flange (13a) communicates with the inside and outside of the upper cylinder (13). A water flow area (15) or a grooved water flow area (15 ') is provided, and a water flow window (16) that opens to the inner end of the water flow area (15) (15') is opened on the peripheral wall of the upper cylinder (13) An internal water blocking cylinder (17) or an external water blocking cylinder (17 ') that closes the water flow window (16) is detachably disposed inside or outside the upper cylinder (13). 17) By removing (17 '), the water flow window (16) is opened and the nutrient water flows down from the drainage port (11) through the water flow area (15) (15') and the water flow window (16). Drainage device in plant cultivation equipment made.   A lower cylinder (12) having a lower flange portion (12a) on the outer surface of the upper end is arranged under the drainage port (11) opened in the bottom wall of the water culture tank (2), and an upper flange portion in the center of the height. The upper cylindrical body (13) having (13a) is passed through the drain outlet (11) at a portion below the upper flange portion (13a) and fixed to the lower cylindrical body (12), so that the drain outlet ( The mouth edge (14) of 11) is sandwiched between the upper and lower flange parts (13a) and (12a), and the upper and lower cylinders (13) and (12) are fixed to the mouth edge part (14), and the upper flange part (13a) Is provided with a notch water passage (15) or a groove water passage (15 ') that communicates the inside and outside of the upper cylinder (13), and the water passage (15) (15) ( 15 ') A water flow window (16) communicating with the inner end is opened, and an internal water stop cylinder (17) or an external water stop cylinder closes the water flow window (16) inside or outside the upper cylinder (13). (17 ') is detachably arranged, and the water flow window (16) is opened by removing the water blocking cylinder (17) (17'), Passing water (15) (15 ') and Tsusuimado (16) adapted to flow down from the through to the drain outlet (11), the drainage device in the plant cultivation device.   Under the drainage port (11) opened in the bottom wall of the water culture tank (2), a lower cylinder body having a lower flange portion (12a) on the upper end outer surface and an internal thread portion (12b) on the inner peripheral surface of the upper end portion ( 12), the upper cylinder (13) having an upper flange portion (13a) in the center of the height and a male thread portion (13b) on the lower outer peripheral surface is a portion below the upper flange portion (13a) The male and female threaded parts (12b) (13b) are screwed together through the drainage port (11), so that the edge (14) of the drainage port (11) is moved by the upper and lower flange parts (13a) (12a). The upper and lower cylinders (13) and (12) are fixed to the mouth edge (14) and the upper flange (13a) communicates the inside and outside of the upper cylinder (13) with the notched water passage area (15 ) Or a groove-shaped water passage (15 '), and a water flow window (16) communicating with the inner end of the water flow region (15) (15') is opened on the peripheral wall of the upper cylinder (13). An internal water blocking cylinder (17) or an external water blocking cylinder (17 ') that closes the water flow window (16) is attached to or removed from the body (13). The water flow window (16) is opened by removing the water blocking cylinder (17) (17 ') and the nutrient water passes through the water flow area (15) (15') and the water flow window (16). A drainage device in a plant cultivation device adapted to flow down from a drainage port (11). The inner water-stop cylinder (17) is inserted into the upper cylinder (13) and supported by an inward projection (19) provided on the lower cylinder (12), and the water-stop cylinder (17) The drainage device in the plant cultivation device according to claim 2 or 3 , wherein the water flow window (16) is opened by extracting the water.   The external water blocking cylinder (17 ') is externally attached to the upper cylinder (13) and received on the upper surface of the bottom wall of the water tank (2), and the water blocking window (17') is removed by removing the water blocking cylinder (17 '). The drainage device in the plant cultivation device according to any one of claims 1 to 3, wherein (16) is opened.   The cutout water passage (15) communicating between the inside and outside of the upper cylinder (13) is formed by cutting out the upper flange portion (13a) at one or more places. The drainage apparatus in the plant cultivation apparatus of crab.   The grooved water passage (15 ') that communicates the inside and outside of the upper cylindrical body (13) is formed by providing one or a plurality of grooves on the lower surface of the upper flange (13a). The drainage apparatus in the plant cultivation apparatus in any one of 5.   The filtration mesh (18) is arranged on the bottom wall of the water culture tank (2) so as to surround the drainage device, the groove (18a) is provided on the outer periphery of the lower end of the mesh (18), and impurities accumulated in the groove (18a). The drainage apparatus in the plant cultivation apparatus according to any one of claims 1 to 7, wherein the drainage apparatus is configured to be able to remove water. Multiple internal water blocking cylinders (17) or external water blocking cylinders (17 ') of different heights are prepared, so that the depth of water stored in the water tank (2) can be adjusted by replacing them. The drainage apparatus in the plant cultivation apparatus in any one of Claims 1-8 made.

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