A hydroponic kale cultivation device and method

Abstract

This invention discloses a hydroponic kale cultivation device and method, specifically relating to the field of agricultural hydroponics. It includes an external fixing frame with a stepped, rotating cultivation unit arranged on it. A water storage tank is located at the bottom of the external fixing frame. The rotating cultivation unit comprises multiple cultivation chambers, arranged equidistantly in a stepped manner on both sides. This invention improves the structure of the rotating cultivation unit. A circulating water pump draws the nutrient solution from the water storage tank to the top cultivation chamber via a water inlet pipe. A protective bottom component, combined with an arc-shaped bottom surface, forms a smooth inner wall of the planting cup. During hydroponics, the kale roots do not adhere to or intertwine with the inner wall of the planting cup, keeping the floating plate along with the seedlings afloat. This avoids the root system gripping the hydroponic container, which can lead to root rot or weakened plant growth, as is common in traditional hydroponic devices. This provides a simple method for subsequent harvesting.

Description

Technical Field

[0001] This invention relates to the field of agricultural hydroponics, and more specifically, to a hydroponic kale cultivation device and method. Background Technology

[0002] Chinese kale (Kale) is a biennial herbaceous vegetable belonging to the Brassicaceae family and the Brassica genus. Its growth process has specific physiological requirements; compared to soil-grown Chinese kale, hydroponically grown Chinese kale has significant advantages. First, hydroponics avoids pests, diseases, and pesticide contamination in the soil, thus producing high-quality, pollution-free Chinese kale. Second, hydroponics allows for precise control of the growth environment and nutrient solution composition, achieving rapid growth and high yield.

[0003] Before the leaf cluster growth stage, Chinese kale grows very little, with 80% of its growth concentrated during the flower stalk formation stage. Therefore, cultivation must respect this physiological characteristic, providing sufficient nutrients and a suitable growing environment. Furthermore, the absorption of nitrogen, phosphorus, and potassium by Chinese kale gradually increases throughout its growth process, reaching its maximum during flower stalk formation. This necessitates targeted nutrient solution management during hydroponics.

[0004] In existing hydroponic cultivation of Chinese kale, floating boards are often used in conjunction with hydroponic baskets. The buoyancy of the floating board adjusts the height of the seedlings in the basket according to the actual water level, ensuring that the roots of the seedlings remain below the water surface to maintain a good growing environment for water and nutrient supply. However, in actual use, because hydroponics provides plants with sufficient water and necessary nutrients, the root system of the same plant is usually more developed in hydroponics compared to traditional soil cultivation. In traditional basket-shaped hydroponic containers, roots are inserted along the mesh, fixing the relative position of the hydroponic plant's roots and the container. This weakens or even eliminates the adjustment of the plant's position by the floating board. This can easily lead to situations where the plant's roots are not fully submerged or part of the plant is submerged. In such a hydroponic environment, not only will root rot or weakened plant growth occur, but mature plants in this state also require scissors to cut the roots to remove the plant completely. Furthermore, the hydroponic basket after removing the plant needs to be carefully cleaned of any remaining roots to prevent them from affecting subsequent planting. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of the present invention provide a hydroponic kale planting device and method. The technical problem to be solved by the present invention is: how to solve the problem that the extensive root system of the existing hydroponic device affects the subsequent growth and makes it inconvenient to pick up the kale.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydroponic Chinese kale planting device, including an outer fixing frame, on which a stepped, rotating cultivation component is arranged, and a water storage tank is provided at the bottom of the outer fixing frame, wherein the relative positions of the outer fixing frame and the outer wall of the water storage tank are fixed by screws / pins.

[0007] The circulating rotary cultivation unit includes multiple sets of cultivation chambers. The multiple sets of cultivation chambers on both sides of the circulating rotary cultivation unit are arranged in an equidistant stepped manner, and the cultivation chambers on the left and right sides are not at the same horizontal height. Both ends of each cultivation chamber are provided with a sealing end cap. A guide pipe is provided between the sealing end caps of adjacent cultivation chambers in the longitudinal direction to form a water flow path that connects the multiple sets of cultivation chambers. A circulating water pump is also provided in the water storage tank. A water inlet pipe is provided between the output end of the circulating water pump and the sealing end cap corresponding to the top cultivation chamber, and a drain pipe is provided with the sealing end cap corresponding to the bottom cultivation chamber. The end of the drain pipe extends into the inner cavity of the water storage tank.

[0008] The cultivation chamber includes a hydroponic tube, a cultivation platform is fixedly mounted on the top of the hydroponic tube, the hydroponic tube and the cultivation platform are integrally injection molded, a planting cup is movably mounted on the cultivation platform, an installation groove is opened at the connection between the cultivation platform and the planting cup, the installation groove passes through the cultivation platform and extends into the inner cavity of the hydroponic tube, and multiple water-blocking baffles are also provided on the inner wall of the hydroponic tube, and the water-blocking baffles are longitudinally staggered with the installation groove.

[0009] In a preferred embodiment, the water-blocking baffle is configured as an arc-shaped plate, and the height of the water-blocking baffle is set to 1 / 2 of the inner cavity of the hydroponic tube. The water-blocking baffle is fixed to the inner wall of the hydroponic tube by adhesive / bolt.

[0010] The end of the hydroponic tube is snapped into the end cap, and a sealing gasket is added at the connection between the hydroponic tube and the end cap to ensure the sealing of the connection.

[0011] In a preferred embodiment, the external fixing frame includes a rear longitudinal bar and a forward tilt bar, and multiple transverse load bars are fixedly provided between the rear longitudinal bar and the forward tilt bar. The rear longitudinal bar and the forward tilt bar are fixedly connected to the transverse load bars by welding / bolting.

[0012] The rear longitudinal bar, the forward tilt bar, and the transverse load bar are all cut from lightweight thermally broken aluminum alloy. The sealing end cap at the end of the cultivation bin is aligned with the transverse load bar, and the sealing end cap and the transverse load bar are fixed together by bolts.

[0013] In a preferred embodiment, the planting cup includes an outer cup body and an upper cup lid, wherein the outer cup body is configured as a flat-bottomed, flared cup shape that is wider at the top and narrower at the bottom, a water-stopping gasket is fixedly provided on the outer wall of the outer cup body, and a floating plate is provided inside the outer cup body;

[0014] The outer cup body is snapped into the upper cup lid, and a planting hole is longitudinally opened through the center of the floating plate. The upper cup lid has an upper flared opening at the top.

[0015] In a preferred embodiment, a limiting plate is fixedly provided in a ring shape on the inner wall of the middle part of the outer cup body, a protective bottom piece is detachably provided at the bottom of the inner cavity of the outer cup body, an arc-shaped bottom surface is fixedly provided at the bottom of the outer cup body, and multiple seepage holes are arranged in a ring array between the bottom surface of the outer cup body and the inner cavity of the outer cup body.

[0016] The inner diameter of the limiting plate is larger than the outer diameter of the protective bottom component, and the outer diameter of the protective bottom component is equal to the inner diameter of the inner cavity at the bottom of the outer cup body.

[0017] In a preferred embodiment, the protective base includes an annular outer frame, with multiple locking protrusions fixedly provided on the inner wall of the annular outer frame, multiple water passage grooves arranged in a circular array on the annular outer frame, a water passage filter screen fixedly provided inside the water passage grooves, and multiple supporting protrusions fixedly provided on the bottom surface of the annular outer frame.

[0018] The arc-shaped bottom surface and the outer wall of the bottom end of the outer cup body form an annular "U"-shaped bottom groove. The inner and outer diameters of the bottom groove are equal to the inner and outer diameters of the annular outer frame, and the locking protrusions of the annular outer frame are locked with the seepage holes.

[0019] In a preferred embodiment, the width of the water storage tank is greater than the width of the external fixed frame, and the circulating water pump is mounted on the bottom wall of the water storage tank.

[0020] A water filter is also installed on the water inlet pipe, and the inner core of the water filter is made of 80-150 mesh filter screen.

[0021] This invention also includes a method for hydroponic cultivation of Chinese kale, the specific hydroponic steps of which are as follows:

[0022] S1. Equipment and supplies;

[0023] S1.1: After adding sealing gaskets to both ends of each cultivation bin, install the sealing end caps. Then install each cultivation bin on the aligned horizontal support bar of the external fixed frame. Then connect the end caps of the longitudinally adjacent cultivation bins to the guide pipes in sequence. Then install the water inlet pipe and the drainage pipe on the top and bottom cultivation bins in sequence, thereby completing the installation of the circulating rotary cultivation component and the external fixed frame.

[0024] S1.2: Place the water storage tank at the bottom of the external fixing frame, use bolts to fix the position of the external fixing frame to the water storage tank, and assemble the end of the drain pipe and the circulating water pump into the inner cavity of the water storage tank.

[0025] S2. Preparation of hydroponic solution: Pour water into the water tank to fill 75%-80% of the tank's volume. Check the weight of the injected water and accurately weigh the fertilizer / nutrient concentrate. Stir thoroughly to dissolve the solution. During this process, adjust the type of fertilizer / nutrient concentrate and measure the pH value to obtain the hydroponic solution.

[0026] S3. Assemble the hydroponic components: Place the protective bottom piece at the bottom of the outer cup body through the limiting plate position, press the protective bottom piece to lock it in place through the locking protrusion and the drainage hole, and based on the limitation of the support protrusion and the bottom groove depth, complete the assembly of the protective bottom piece in the bottom groove position. Then insert the kale seedlings into the planting hole position, place the floating plate containing the kale seedlings in the limiting plate position of the inner cavity of the outer cup body, and put the upper cup lid on the top of the outer cup body to complete the assembly of the planting cup.

[0027] S4. Seedling Planting: Align and install the planting cup containing the Chinese kale seedlings from step S3 into the installation groove. Use a water-stop gasket to ensure the seal between the outer cup and the installation groove to prevent the hydroponic solution from leaking out from this position. This completes the installation of the entire device.

[0028] S5. Nutrient solution circulation supply: The circulating water pump is powered by an external power source. The hydroponic solution prepared in step S2 is pumped into the cultivation chamber through the water inlet pipe. Through the conduction of the guide pipe and the action of the water flow itself, the hydroponic solution is circulated to each cultivation chamber in sequence, and finally sent back to the water storage tank through the drain pipe, forming a water flow path for the hydroponic solution. The hydroponic solution is supplied to the planting cup in a circulating manner, thereby providing nutrients to the Chinese kale seedlings during the growth period for hydroponic cultivation.

[0029] The technical effects and advantages of this invention are as follows:

[0030] 1. This invention improves the structure of the circulating rotary cultivation device. The circulating water pump pumps the nutrient solution in the water storage tank to the top cultivation chamber through the water inlet pipe. The hydroponic solution flows into the bottom tank through the seepage hole via the hydroponic pipe and is then replenished into the inner cavity of the outer cup through the water filter screen. The protective bottom is installed in the outer cup, so that the inner cavity of the entire planting cup forms an opening without the fence of traditional hydroponic containers. With the arc-shaped bottom surface, a smooth inner wall of the planting cup is formed. During hydroponics, the roots of Chinese kale will not stick or intertwine with the inner wall of the planting cup. The roots of the Chinese kale seedlings transplanted to the floating board are always kept floating in the hydroponic solution in the inner cavity of the planting cup. This avoids the root system grabbing the hydroponic container in traditional hydroponic devices, effectively preventing the possible root rot or weakened plant growth. It also provides a simple method for subsequent harvesting.

[0031] 2. The present invention adds a water-blocking baffle to the inner wall of the hydroponic tube, which can maintain the water level when the hydroponic solution enters the inner cavity of the hydroponic tube, so as to ensure that the hydroponic solution can be smoothly replenished into the planting cup through the seepage hole. The arc-shaped baffle does not affect the normal flow of the hydroponic solution and avoids the high-speed water flow from directly impacting the bottom of the planting cup that extends through the installation groove. It effectively prevents the long-term water flow impact from causing the planting cup and the installation groove to loosen at the installation point, and prevents the hydroponic solution from seeping out from there.

[0032] 3. The limiting plate in the inner cavity of the outer cup of this invention is set in a raised position, which can limit the turning space of the floating plate in the outer cup. That is, when the hydroponic solution flows into the inner cavity of the outer cup through the seepage hole and acts on the floating plate with transplanted seedlings, especially when the transplanted kale seedlings are low, the floating plate will not cause seedling death due to turning / tilting, thus affecting the smooth progress of hydroponics. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 This is a schematic diagram of the overall structure of the present invention (excluding the water storage tank).

[0035] Figure 3 This is a schematic diagram of the circulating rotary cultivation component structure of the present invention.

[0036] Figure 4 This is a schematic diagram of the cultivation bin structure of the present invention.

[0037] Figure 5 This is a schematic diagram of the cross-sectional structure of the hydroponic tube of the present invention.

[0038] Figure 6 This is a schematic diagram of the hydroponic tube structure from a side view of the present invention.

[0039] Figure 7 This is a schematic diagram of the planting cup structure of the present invention.

[0040] Figure 8 This is a schematic diagram of the exploded (section of the outer cup body) structure of the planting cup of the present invention.

[0041] Figure 9 This is a schematic diagram of the cross-sectional structure of the outer cup body of the present invention.

[0042] Figure 10 This is a schematic diagram of the protective base structure of the present invention.

[0043] Figure 11 This is a schematic diagram of the overall structure of the present invention with an added water filter.

[0044] The attached diagram is labeled as follows: 10 External fixing frame, 20 Recirculating rotary cultivation component, 30 Water storage tank, 40 Water filter;

[0045] 101 Rear longitudinal bar, 102 Forward tilt bar, 103 Transverse load bar;

[0046] 201 Cultivation bin, 202 End cap, 203 Diversion pipe, 204 Circulating water pump, 205 Water inlet pipe, 206 Drainage pipe;

[0047] 2011 Hydroponic tubes, 2012 Cultivation platform, 2013 Planting cups, 2014 Installation trough, 2015 Water-blocking baffle;

[0048] 20131 Outer cup body, 20132 Upper cup lid, 20133 Water-stopping gasket, 20134 Floating plate, 20135 Planting hole, 20136 Upper flare, 20137 Limiting plate, 20138 Protective bottom component, 20139 Arc-shaped bottom surface, 20130 Drainage hole;

[0049] 001 Annular outer frame, 002 locking protrusion, 003 water passage groove, 004 water passage filter screen, 005 support protrusion. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1:

[0052] This invention provides, for example Figure 1 The device shown includes an outer frame 10, on which are arranged stepped circulating rotary cultivation components 20. A water storage tank 30 is provided at the bottom of the outer frame 10. The outer frame 10 and the outer wall of the water storage tank 30 are fixed in relative position by screws / pins. The width of the water storage tank 30 is greater than the width of the outer frame 10, and a circulating water pump 204 is installed at the bottom wall of the water storage tank 30.

[0053] Please see the appendix Figure 2The external fixing frame 10 includes a rear longitudinal bar 101 and a forward tilting bar 102. Multiple transverse load bars 103 are fixed between the rear longitudinal bar 101 and the forward tilting bar 102. The rear longitudinal bar 101, the forward tilting bar 102, and the transverse load bars 103 are fixedly connected by welding / bolts. The rear longitudinal bar 101, the forward tilting bar 102, and the transverse load bars 103 are all cut from lightweight thermally broken aluminum alloy. The sealing end cap 202 at the end of the cultivation bin 201 is aligned with the transverse load bars 103. The sealing end cap 202 is fixed to the horizontal load bar 103 by bolts. The outer fixing frame 10 is made of lightweight and strong load-bearing aluminum alloy poles that are cut, spliced ​​and welded. The rear longitudinal bar 101, the forward tilting bar 102 and the horizontal bar are used as the frame body to ensure the load-bearing capacity. The horizontal load bar 103 is added as the installation position of the circulating rotary cultivation component 20 to form an installation position suitable for the stepped arrangement on both sides of the circulating rotary cultivation component 20.

[0054] like Figure 3 As shown, the recirculating rotary cultivation unit 20 includes multiple sets of cultivation chambers 201. The multiple sets of cultivation chambers 201 on both sides of the recirculating rotary cultivation unit 20 are arranged in an equidistant, stepped manner, and the cultivation chambers 201 on the left and right sides are not at the same horizontal level. Each cultivation chamber 201 has a sealing end cap 202 at both ends. A guide pipe 203 is provided between the sealing end caps 202 of adjacent longitudinally adjacent cultivation chambers 201, forming a water flow path connecting the multiple sets of cultivation chambers 201. A circulating water pump 204 is also provided in the water storage tank 30. A water inlet pipe 205 is provided between the output end of the circulating water pump 204 and the sealing end cap 202 corresponding to the top cultivation chamber 201, and the sealing end cap 202 corresponding to the bottom cultivation chamber 201 is... There is a drain pipe 206, the end of which extends into the inner cavity of the water storage tank 30. When the circulating rotary cultivation unit 20 is working, the circulating water pump 204 works to pump the nutrient solution in the water storage tank 30 to the top cultivation chamber 201 through the water inlet pipe 205. Under the guidance of the water flow and the action of its own weight, the water flows through the cultivation chambers 201 of the longitudinal step height in sequence, and finally flows back to the water storage tank 30 through the bottom cultivation chamber 201 and the drain pipe 206, thus forming a complete hydroponic solution channel. This ensures that the roots of Chinese kale have sufficient oxygen supply and timely nutrient supply for hydroponic growth, prevents nutrient precipitation, and maintains a stable growth environment to maintain the healthy growth of the plants and ensure plant yield and quality.

[0055] like Figure 4-6As shown, the cultivation chamber 201 includes a hydroponic tube 2011, the end of which is snapped into a sealing end cap 202. A sealing gasket is added at the connection between the hydroponic tube 2011 and the sealing end cap 202 to ensure the sealing of the connection. A cultivation platform 2012 is fixedly mounted on the top of the hydroponic tube 2011. The hydroponic tube 2011 and the cultivation platform 2012 are integrally injection molded. A planting cup 2013 is movably mounted on the cultivation platform 2012. An installation opening is provided at the connection between the cultivation platform 2012 and the planting cup 2013. The trough 2014 penetrates the cultivation platform 2012 and extends into the inner cavity of the hydroponic tube 2011. Multiple water-blocking baffles 2015 are also provided on the inner wall of the hydroponic tube 2011, and the water-blocking baffles 2015 are arranged in a staggered longitudinal position with the trough 2014. The water-blocking baffles 2015 are set as arc-shaped plates, and the height of the water-blocking baffles 2015 is set to 1 / 2 of the inner cavity of the hydroponic tube 2011. The water-blocking baffles 2015 are fixed to the inner wall of the hydroponic tube 2011 by adhesive / bolts.

[0056] Specifically, a water-blocking baffle 2015 is added to the inner wall of the hydroponic tube 2011. This baffle maintains the water level when the hydroponic solution enters the inner cavity of the hydroponic tube 2011. When the inflow of water is insufficient, the water-blocking baffle 2015 ensures that the water level in the hydroponic tube 2011 is not less than 1 / 2 of the inner cavity height. This ensures that the hydroponic solution can be smoothly replenished into the planting cup 2013 through the seepage hole 20130. The arc-shaped baffle 2015 does not affect the normal flow of the hydroponic solution and prevents high-speed water flow from directly impacting the bottom of the planting cup 2013 that extends through the installation groove 2014. This effectively prevents the long-term impact of water flow from causing the planting cup 2013 to loosen at the installation point of the installation groove 2014.

[0057] See appendix Figure 7-9 As shown, the planting cup 2013 includes an outer cup body 20131 and an upper cup lid 20132. The outer cup body 20131 is designed as a flat-bottomed, flared cup shape, wider at the top and narrower at the bottom. A water-stopping gasket 20133 is fixedly installed on the outer wall of the outer cup body 20131, and a floating plate 20134 is provided inside the outer cup body 20131. The outer cup body 20131 is snapped into the upper cup lid 20132, and a planting hole 20135 is longitudinally opened through the center of the floating plate 20134. The upper cup lid 20132 has an upper flared opening 20136 at the top. A limiting plate 20137 is fixedly installed in a ring shape on the inner wall of the middle part of the outer cup 20131. A protective bottom piece 20138 is detachably and movable at the bottom of the inner cavity of the outer cup 20131. The inner diameter of the ring-shaped limiting plate 20137 is larger than the outer diameter of the protective bottom piece 20138, and the outer diameter of the protective bottom piece 20138 is equal to the inner diameter of the bottom inner cavity of the outer cup 20131. An arc-shaped bottom surface 20139 is fixedly installed at the bottom of the outer cup 20131. Multiple seepage holes 20130 are arranged in a ring array between the bottom surface of the outer cup 20131 and the inner cavity of the outer cup 20131.

[0058] When assembling the planting cup 2013, the protective bottom piece 20138 is inserted into the bottom of the inner cavity of the outer cup body 20131 via the limiting plate 20137 (the bottom surface of the protective bottom piece 20138 with the supporting protrusion 005 is installed downwards during installation). Then, the kale seedling is transplanted to the planting hole 20135, with the seedling roots extending from the bottom of the planting hole 20135. The floating plate 20134 with the transplanted seedling is placed on top of the limiting plate 20137, and the upper cup lid 20132 is secured, completing the planting assembly of the planting cup 2013. If the kale seedling is tall, the bud tip will protrude from the upper flare 20136. If the kale seedling is short, the flower stalk that emerges during subsequent hydroponic growth will smoothly expand from the top. The extended opening 20136 ensures that neither the flower stalk nor newly added leaves are obstructed. The water-stopping gasket 20133 ensures the tightness between the outer cup 20131 and the inner wall of the mounting groove 2014, ensuring the stability of the outer cup 20131 installation position. In addition, the raised limiting plate 20137 in the inner cavity of the outer cup 20131 restricts the turning space of the floating plate 20134 within the outer cup 20131. That is, when the hydroponic solution flows into the inner cavity of the outer cup 20131 through the seepage hole 20130 and acts on the floating plate 20134 with transplanted seedlings, especially when the transplanted kale seedlings are low, the floating plate 20134 will not turn over / tilt, causing seedling death and affecting the smooth progress of hydroponics.

[0059] See appendix Figure 10 As shown, the protective base 20138 includes an annular outer frame 001, a plurality of locking protrusions 002 are fixedly provided on the inner wall of the annular outer frame 001, a plurality of water passage grooves 003 are provided in an annular array on the annular outer frame 001, a water passage filter screen 004 is fixedly provided inside the water passage grooves 003, and a plurality of supporting protrusions 005 are fixedly provided on the bottom surface of the annular outer frame 001.

[0060] See appendix Figure 9 As shown, the arc-shaped bottom surface 20139 and the outer wall of the bottom end of the outer cup body 20131 form an annular "U"-shaped bottom groove. The inner and outer diameters of the bottom groove are equal to the inner and outer diameters of the annular outer frame 001, and the locking protrusion 002 of the annular outer frame 001 is locked with the seepage hole 20130.

[0061] When the protective base 20138 is installed in the bottom tank, the inner and outer sides of the annular outer frame 001 abut against and support the side walls of the bottom tank, while the locking protrusion 002 is aligned and locked with the seepage hole 20130, and the supporting protrusion 005 limits the longitudinal position of the annular outer frame 001 in the bottom tank, thus locking the protective base 20138 to the bottom tank installation position. Subsequently, the hydroponic solution flowing into the bottom tank through the seepage hole 20130 via the hydroponic pipe 2011 is blocked by the annular outer frame 001. The water filter 004 flows upwards into the inner cavity of the outer cup 20131, providing sufficient liquid level for the roots at the bottom of the floating plate 20134. The water filter 004 effectively reduces the water flow velocity, preventing the floating plate 20134 from shaking or overturning due to the rushing water. The protective bottom piece 20138 is installed inside the outer cup 20131, creating an opening in the inner cavity of the planting cup 2013 that lacks the traditional grid opening of hydroponic containers, and complements the curved bottom surface 2. 0139, forming a smooth inner wall of the planting cup 2013, prevents the roots of the Chinese kale from sticking or intertwining with the inner wall of the planting cup 2013 during hydroponics. This keeps the roots of the Chinese kale seedlings transplanted to the floating board 20134 floating in the hydroponic solution inside the planting cup 2013. The floating board 20134 adjusts the contact position between the liquid surface and the plant according to the water level, avoiding the situation in traditional hydroponic devices where the roots grab the hydroponic container, causing the plant to be partially submerged or the roots to protrude from the water surface as the water level changes. This effectively avoids the possibility of root rot or weakened plant growth. Furthermore, the floating root growth pattern during the growing season provides an easy way to harvest the mature Chinese kale. After harvesting the Chinese kale, the planting cup 2013 only needs simple cleaning and replacement of the new protective bottom 20138 before it can be used again.

[0062] Example 2:

[0063] Based on the hydroponic Chinese kale planting device proposed in Example 1, the present invention provides a further technical solution for the circulating rotary cultivation component 20.

[0064] Please see Figure 11 The water pipe 205 corresponding to the circulating rotary cultivation component 20 provided by the present invention is also equipped with a water filter 40, and the inner core of the water filter 40 is made of 80-150 mesh filter screen.

[0065] When the hydroponic solution is circulated and transported by the circulating water pump 204, the root hairs, flower stalks and young leaf debris that fall off during the growth of Chinese kale flow along the hydroponic solution path and are filtered by the water filter 40 to prevent the accumulation of debris from affecting the interruption of the water flow path.

[0066] This invention also includes a method for hydroponic cultivation of Chinese kale, the specific hydroponic steps of which are as follows:

[0067] S1. Equipment and supplies;

[0068] S1.1: After adding sealing gaskets to both ends of each cultivation chamber 201, install the sealing end cap 202. Then install each cultivation chamber 201 on the aligned horizontal support bar 103 on the outer fixing frame 10. Then connect the ends of the aligned sealing end caps 202 of the longitudinally adjacent cultivation chambers 201 to the guide pipes 203. Then install the water inlet pipe 205 and the drain pipe 206 on the top and bottom cultivation chambers 201 respectively, thereby completing the body position installation of the circulating rotary cultivation component 20 and the outer fixing frame 10.

[0069] S1.2: Place the water storage tank 30 at the bottom of the outer fixing frame 10, use bolts to fix the position of the outer fixing frame 10 and the water storage tank 30, and assemble the end of the drain pipe 206 and the circulating water pump 204 into the inner cavity of the water storage tank 30.

[0070] S2. Preparation of hydroponic solution: Pour water into the water storage tank 30 to fill 75%-80% of the inner volume of the water storage tank 30, and check and accurately weigh the fertilizer source / nutrient concentrate according to the weight of the injected water and stir it thoroughly to complete the dissolution. During the process, adjust the type of fertilizer source / nutrient concentrate and measure the pH value to obtain the hydroponic solution.

[0071] Hydroponic solution formula 1: In water: 472 g / ton calcium nitrate tetrahydrate, 404 g / ton potassium nitrate, 100 g / ton potassium dihydrogen phosphate, 246 g / ton magnesium sulfate heptahydrate, pH 6.4-7.8;

[0072] Hydroponic solution formula 2: In water: 472 g / ton calcium nitrate tetrahydrate, 267 g / ton potassium nitrate, 53 g / ton ammonium nitrate, 100 g / ton potassium dihydrogen phosphate, 116 g / ton potassium sulfate, 246 g / ton magnesium sulfate heptahydrate, pH 6.4-7.2;

[0073] Hydroponic solution formula 3: In water: 472 g / ton calcium nitrate tetrahydrate, 202 g / ton potassium nitrate, 80 g / ton ammonium nitrate, 100 g / ton potassium dihydrogen phosphate, 174 g / ton potassium sulfate, 246 g / ton magnesium sulfate heptahydrate, pH 6.1-6.6;

[0074] S3. Assemble the hydroponic components: Place the protective bottom piece 20138 at the bottom of the outer cup body 20131 via the limiting plate 20137. Press the protective bottom piece 20138 to lock it in place via the locking protrusion 002 and the drainage hole 20130. Based on the support protrusion 005 and the depth of the bottom groove, complete the assembly of the protective bottom piece 20138 in the bottom groove. Then, insert the kale seedlings into the planting hole 20135 and place the floating plate 20134 containing the kale seedlings at the limiting plate 20137 in the inner cavity of the outer cup body 20131. Finally, cover the top of the outer cup body 20131 with the upper cup lid 20132 to complete the assembly of the planting cup 2013.

[0075] S4. Seedling Planting: Align and install the planting cup 2013 containing the Chinese kale seedlings from step S3 into the installation groove 2014. The water-stopping gasket 20133 ensures the seal between the outer cup 20131 and the installation groove 2014 to prevent the hydroponic solution from leaking out from this position, thus completing the installation of the entire device.

[0076] S5. Nutrient solution circulation supply: The circulating water pump 204 is powered by an external power source. The hydroponic solution prepared in step S2 is pumped into the cultivation chamber 201 through the water inlet pipe 205. Through the conduction of the guide pipe 203 and the action of the water flow itself, the hydroponic solution is circulated to each cultivation chamber 201 in sequence. Finally, it is sent back to the water storage tank 30 through the drain pipe 206, forming a water flow path for the hydroponic solution. The water filter 40 filters the debris that falls off the Chinese kale plants during the growth period in the water flow path and supplies the hydroponic solution to the planting cup 2013 in a circulating manner, thereby providing nutrients to the Chinese kale seedlings during the growth period for hydroponic cultivation.

[0077] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0078] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0079] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydroponic kale cultivation device, characterized in that: Includes an external fixing frame (10), on which are arranged stepped circulating rotating cultivation components (20), and at the bottom of the external fixing frame (10) is a water storage tank (30). The circulating rotary cultivation component (20) includes multiple cultivation chambers (201), each cultivation chamber (201) including a hydroponic tube (2011), a cultivation platform (2012) fixedly provided on the top of the hydroponic tube (2011), a planting cup (2013) movably provided on the cultivation platform (2012), an installation groove (2014) provided at the connection between the cultivation platform (2012) and the planting cup (2013), the installation groove (2014) penetrating the cultivation platform (2012) and extending into the inner cavity of the hydroponic tube (2011), and multiple water-blocking baffles (2015) provided on the inner wall of the hydroponic tube (2011), and the water-blocking baffles (2015) and the installation groove (2014) are longitudinally staggered. The planting cup (2013) includes an outer cup body (20131) and an upper cup lid (20132). The outer cup body (20131) is configured as a flat-bottomed, flared cup that is wider at the top and narrower at the bottom. A water-stopping gasket (20133) is fixedly provided on the outer wall of the outer cup body (20131). A floating plate (20134) is provided inside the outer cup body (20131). The water-blocking baffle (2015) is set as an arc-shaped plate, and the height of the water-blocking baffle (2015) is set as 1 / 2 of the inner cavity of the hydroponic tube (2011). The water-blocking baffle (2015) is fixed to the inner wall of the hydroponic tube (2011) by adhesive / bolt. A limiting plate (20137) is fixedly provided in a ring on the inner wall of the middle part of the outer cup body (20131). A protective bottom piece (20138) is detachably provided at the bottom of the inner cavity of the outer cup body (20131). An arc-shaped bottom surface (20139) is fixedly provided at the bottom of the outer cup body (20131). Multiple water seepage holes (20130) are arranged in a ring array between the bottom surface of the outer cup body (20131) and the inner cavity of the outer cup body (20131). The annular inner diameter of the limiting plate (20137) is larger than the outer diameter of the protective bottom piece (20138), and the outer diameter of the protective bottom piece (20138) is equal to the inner diameter of the bottom cavity of the outer cup body (20131); The protective base (20138) includes an annular outer frame (001), with multiple locking protrusions (002) fixedly provided on the inner wall of the annular outer frame (001), multiple water passage grooves (003) arranged in a ring array on the annular outer frame (001), a water passage filter screen (004) fixedly provided inside the water passage grooves (003), and multiple supporting protrusions (005) fixedly provided on the bottom surface of the annular outer frame (001). The arc-shaped bottom surface (20139) and the outer wall of the bottom end of the outer cup body (20131) form an annular "U"-shaped bottom groove. The inner and outer diameters of the bottom groove are equal to the inner and outer diameters of the annular outer frame (001), and the locking protrusion (002) of the annular outer frame (001) is locked with the seepage hole (20130).

2. The hydroponic kale cultivation device according to claim 1, characterized in that: The end of the hydroponic tube (2011) is snapped into the end cap (202), and a sealing gasket is added at the connection between the hydroponic tube (2011) and the end cap (202).

3. The hydroponic kale cultivation device according to claim 1, characterized in that: The external fixing frame (10) includes a rear longitudinal rod (101) and a forward tilting rod (102). Multiple transverse load bars (103) are fixed between the rear longitudinal rod (101) and the forward tilting rod (102). The rear longitudinal rod (101) and the forward tilting rod (102) are fixedly connected to the transverse load bars (103) by welding / bolts. The rear longitudinal bar (101), the forward tilt bar (102), and the transverse load bar (103) are all cut from lightweight thermally broken aluminum alloy. The sealing end cap (202) at the end of the cultivation bin (201) is aligned with the transverse load bar (103), and the sealing end cap (202) and the transverse load bar (103) are fixed together by bolts.

4. The hydroponic kale cultivation device according to claim 1, characterized in that: The outer cup body (20131) is engaged with the upper cup lid (20132), and a planting hole (20135) is longitudinally opened through the center of the floating plate (20134). The upper cup lid (20132) has an upper flared opening (20136) at the top.

5. The hydroponic kale cultivation device according to claim 1, characterized in that: The multiple cultivation chambers (201) on both sides of the circulating rotary cultivation unit (20) are arranged in an equidistant stepped manner, and the cultivation chambers (201) on the left and right sides are not at the same horizontal height. Both ends of the cultivation chamber (201) are provided with end caps (202). A guide pipe (203) is provided between the end caps (202) of the longitudinally adjacent cultivation chambers (201) to form a water flow path that connects the multiple cultivation chambers (201). A circulating water pump (204) is also provided in the water storage tank (30). A water inlet pipe (205) is provided between the output end of the circulating water pump (204) and the end cap (202) of the top cultivation chamber (201). A drain pipe (206) is provided at the end of the end cap (202) of the bottom cultivation chamber (201). The end of the drain pipe (206) extends into the inner cavity of the water storage tank (30).

6. The hydroponic kale cultivation device according to claim 5, characterized in that: The width of the water storage tank (30) is greater than the width of the outer fixed frame (10), and the circulating water pump (204) is mounted on the bottom wall of the water storage tank (30); A water filter (40) is also installed on the water inlet pipe (205), and the inner core of the water filter (40) is made of 80-150 mesh filter screen.

7. A hydroponic method using the hydroponic kale cultivation device according to any one of claims 1-6, characterized in that: The specific steps for hydroponics are as follows: S1. Equipment and supplies; S1.1: After adding sealing gaskets to both ends of each cultivation bin (201), install the sealing end cap (202). Then install each cultivation bin (201) on the aligned horizontal support bar (103) on the outer fixing frame (10). Then connect the ends of the aligned sealing end caps (202) of the longitudinally adjacent cultivation bins (201) to the guide pipe (203). Then install the water inlet pipe (205) and the drain pipe (206) on the top and bottom cultivation bins (201) in sequence, thereby completing the body position installation of the circulating rotary cultivation component (20) and the outer fixing frame (10). S1.2: Place the water storage tank (30) at the bottom of the outer fixing frame (10), use bolts to fix the position of the outer fixing frame (10) and the water storage tank (30), and assemble the end of the drain pipe (206) and the circulating water pump (204) into the inner cavity of the water storage tank (30); S2. Preparation of hydroponic solution: Pour water into the water storage tank (30) to fill 75%-80% of the volume of the inner cavity of the water storage tank (30), and check and accurately weigh the fertilizer source / nutrient concentrate according to the weight of the injected water and stir it evenly to complete the dissolution. During this period, adjust the type of fertilizer source / nutrient concentrate and measure the pH value to obtain the hydroponic solution. S3. Assemble hydroponic components: Place the protective bottom piece (20138) at the bottom of the outer cup body (20131) through the limiting plate (20137). Press the protective bottom piece (20138) to lock it in place with the water seepage hole (20130) through the locking protrusion (002). This completes the assembly of the protective bottom piece (20138) into the bottom groove. Then, insert the kale seedlings into the planting hole (20135) and place the floating plate (20134) containing the kale seedlings into the limiting plate (20137) in the inner cavity of the outer cup body (20131). Finally, cover the top of the outer cup body (20131) with the upper cup lid (20132) to complete the assembly of the planting cup (2013). S4. Seedling Planting: Align the planting cup (2013) containing the Chinese kale seedlings from step S3 with the installation slot (2014) to complete the installation of the entire device; S5. Nutrient solution circulation supply: The circulating water pump (204) is powered by an external power source. The hydroponic solution prepared in step S2 is pumped into the cultivation chamber (201) through the water inlet pipe (205). Through the conduction of the guide pipe (203) and the action of the water flow itself, the hydroponic solution is circulated to each cultivation chamber (201) in sequence. Finally, it is sent back to the water storage tank (30) through the drain pipe (206), forming a water flow path for the hydroponic solution. The hydroponic solution is supplied to the planting cup (2013) in a circulating manner, thereby providing nutrients to the Chinese kale seedlings during the growth period for hydroponic work.

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