Soilless culture hydrogen-rich nutrient solution supply device

Abstract

The utility model discloses a hydrogen-rich nutrient solution supply device for soilless culture. The hydrogen-rich nutrient solution supply device comprises a feeding system, a mixing system and an irrigation system, the material supply system comprises a liquid material unit and a solid material hydrogen supply unit; the mixing system comprises a plurality of mixing tanks, and the mixing tanks are respectively communicated with the liquid material unit and the solid material hydrogen supply unit and are used for mixing and storing the soilless culture hydrogen-rich nutrient solution; the irrigation system comprises a plurality of soilless culture pots and an irrigation pipeline for supplying the soilless culture hydrogen-rich nutrient solution to the soilless culture pots, and the irrigation pipeline is communicated with at least one material mixing tank. According to the soilless culture hydrogen-rich nutrient solution supply device, the pH value and the hydrogen concentration of the nutrient solution in the soilless culture pot are monitored in real time, the hydrogen-rich nutrient solution can be controllably provided for the soilless culture pot through the control system, proper adjustment of hydrogen and various nutritional ingredients is achieved, and the nutrient solution can be supplied to the soilless culture pot. The requirements of different crops and different growth stages in soilless culture are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of soilless culture technology, especially to a soilless culture hydrogen-rich nutrient solution supply device. BACKGROUND

[0002] Soilless culture, as a modern agricultural innovation that overturns traditional farming methods, does not use natural soil but uses substrate as the medium for plant growth, and uses nutrient solution for irrigation after planting. This technology not only effectively reduces the risk of soil-borne diseases and pests, but also significantly saves valuable land resources and demonstrates outstanding results in water resource utilization and fertilizer and pesticide reduction, and is widely used in the planting fields of vegetables, flowers, fruits and Chinese herbal medicines, and is an ideal choice for agricultural production in extreme environments such as deserts, islands and space.

[0003] Traditional soilless culture systems mostly use liquid hydrogen or gaseous hydrogen to supply hydrogen to the nutrient solution. This type of hydrogen supply method has limitations in concentration control and hydrogen supply efficiency, especially in application environments with high requirements for long-term slow release and stability of hydrogen supply, it is difficult to meet the growth needs of different crops.

[0004] For example, utility model CN218353768U discloses a water and fertilizer integrated irrigation system based on hydrogen, which realizes precise synchronous irrigation of water, hydrogen, soluble solid fertilizer or liquid fertilizer through a gas-liquid mixing device and an automatic control system, reducing labor intensity and improving work efficiency. However, this system still mainly relies on gaseous hydrogen as the source of hydrogen supply, and has great limitations in control accuracy and long-term slow release of hydrogen concentration, making it difficult to stably meet the needs of plants for changes in hydrogen concentration during the growth cycle. In addition, due to the high diffusivity of hydrogen, gaseous hydrogen is prone to escape during use, resulting in low hydrogen loss and utilization rate.

[0005] Utility model CN219663680U relates to a novel hydrogen-rich water plant nutrient solution preparation system, which includes a hydrogen-rich water generator, the hydrogen-rich water generator is connected to a first water pump through a pipeline, the first water pump is connected to a mother liquor preparation tank through a first delivery pipeline, the first water pump is connected to a nutrient solution preparation tank through a second delivery pipeline, the nutrient solution preparation tank is connected to the mother liquor preparation tank through a third delivery pipeline, and a second water pump is arranged on the third delivery pipeline. The utility model uses a hydrogen-rich water generator or directly mixes hydrogen-rich water with concentrated mother liquor, but the hydrogen solubility is difficult to maintain constant, and hydrogen is prone to escape, making it difficult to meet the demand for stable release of hydrogen during plant growth, and the device has high energy consumption during preparation, making it difficult to be applied on a large scale.

[0006] Solid-state hydrogen storage material is a new type of hydrogen supply material developed in recent years. It can achieve slow release of hydrogen through hydrolysis reaction, and can regulate the hydrogen supply concentration according to the crop growth demand and reaction conditions. It has the advantages of high hydrogen supply density, controllable concentration and long-acting slow release, and has great potential for use in soilless culture nutrient solution hydrogen supply. In addition, after the solid-state hydrogen storage material supplies hydrogen, it can also provide plants with other nutrients such as magnesium, calcium, nitrogen, boron, etc. However, due to the alkalinity of the solution after the hydrolysis of the solid-state hydrogen storage material, the composition of the nutrient solution needs to be regulated to achieve stable release of hydrogen and appropriate adjustment of the pH value, so as to meet the needs of different crops and their different growth stages.

[0007] In the prior art, the application of solid-state hydrogen storage material as a hydrogen supply material for soilless culture is still in its early stages. Therefore, how to provide a soilless culture hydrogen-rich nutrient solution supply device that can achieve stable release of hydrogen and accurate control of concentration, while meeting the different hydrogen needs of plants in each growth cycle, to solve the problems of easy hydrogen escape, difficult concentration control and insufficient long-term hydrogen supply in the prior art, is a problem that needs to be solved by those skilled in the art. Practical new type content

[0008] In view of the defects in the prior art, the present application provides a soilless culture hydrogen-rich nutrient solution supply device that can achieve stable release of hydrogen and accurate control of concentration, while meeting the different hydrogen needs of plants in each growth cycle.

[0009] Specifically, the present application provides a soilless culture hydrogen-rich nutrient solution supply device, comprising a feeding system, a mixing system and an irrigation system.

[0010] The feeding system comprises a liquid material unit and a solid hydrogen supply unit.

[0011] The mixing system comprises a plurality of mixing tanks, each of which is in communication with the liquid material unit and the solid hydrogen supply unit, and is used for mixing and storing the soilless culture hydrogen-rich nutrient solution.

[0012] The irrigation system comprises a plurality of soilless culture pots and an irrigation pipeline for supplying soilless culture hydrogen-rich nutrient solution to each soilless culture pot, and the irrigation pipeline is in communication with at least one mixing tank.

[0013] Preferably, the liquid material unit comprises a water tank, a mother liquor tank and a premix tank, and the water tank and the mother liquor tank are in communication with the premix tank for mixing and storing the prepared nutrient solution.

[0014] The water tank and the premix tank are in communication with each mixing tank for mixing and storing the soilless culture hydrogen-rich nutrient solution.

[0015] Preferably, a water purifier is arranged in the pipeline connecting the water tank and the mixing tank for filtering the water in the water tank.

[0016] Preferably, the liquid material unit further comprises a neutralizer tank fixed to the outer wall of the mixing tank to provide the mixing tank with an acid-base neutralizer.

[0017] The solid hydrogen supply unit supplies solid hydrogen supply material into the mixing tank, and the stirring paddle continues to stir, so that the solid hydrogen supply material is dispersed in the nutrient solution, at this time, part of the solid hydrogen supply material reacts, hydrogen is generated and dissolved in the nutrient solution base, but the reaction produces hydroxyl ions, which increases the pH value of the base solution, and the reaction product hydroxide (magnesium hydroxide) is coated on the surface of the solid hydrogen supply material to assemble and prevent further hydrogen release.

[0018] Therefore, the utility model adopts the neutralizer tank to provide the nutrient solution with an appropriate amount of neutralizer to adjust the pH change caused by the hydrogen release of the hydrogen storage material, so as to keep the acidity and alkalinity of the nutrient solution stable. The design ensures that the nutrient solution provides suitable hydrogen concentration for the plant while maintaining a suitable pH environment for plant growth, providing optimal nutrient conditions for the healthy growth of the plant.

[0019] Preferably, the solid hydrogen supply unit comprises a solid feeder fixed to the outer wall of the mixing tank to provide the mixing tank with solid hydrogen supply material.

[0020] The solid hydrogen supply material includes at least one of MgH2, ammonia borane, KBH4, Mg(BH4)2, Ca(BH4)2, CaH2, and KH. The above-mentioned materials are relatively active and can easily react with water and other solvents, oxygen in the air, and acidic substances, etc., thus magnesium hydride and other materials need to be stored in a closed environment. Therefore, the solid feeder of the utility model is preferably fixed to the outer wall of the mixing tank to shorten the conveying distance, reduce the loss and leakage risk, and further has a sealing structure compared with ordinary solid material suppliers, thereby meeting the long-term safe storage and stable supply requirements of the solid hydrogen storage material. The solid feeder specifically comprises:

[0021] (1) Double sealing structure: the outer layer is a gas-impermeable material (such as stainless steel), and the inner layer is a corrosion-resistant sealing material, which ensures that the internal environment is dry and prevents the solid hydrogen storage material from being pre-reacted due to contact with moisture or oxygen in the air.

[0022] The solid feeder is attached with a replaceable desiccant module to further absorb residual moisture inside, prolonging the service life of the hydrogen storage material.

[0023] (2) Particle anti-blocking device: a vibrating sieve device is arranged in the solid feeder to start at regular intervals to slightly vibrate the solid material, preventing adhesion and blocking between particles and ensuring uniform entry of particles into the feeding channel.

[0024] A self-cleaning brush or air flow flushing system is arranged in the feeding pipeline to prevent particles from adhering or accumulating in the pipeline and improve the reliability of the system.

[0025] Preferably, the irrigation system further comprises a planting rack and a leakage tank, a backwater tank and an irrigator on the planting rack;

[0026] The soilless culture pot is arranged in the leakage tank, and the liquid outlet end of the leakage tank is communicated with the backwater tank;

[0027] The irrigator is communicated with the irrigation pipeline to input the hydrogen-rich nutrient solution for soilless culture into each soilless culture pot. The excess hydrogen-rich nutrient solution for soilless culture is discharged into the leakage tank, and is discharged from the liquid outlet end of the leakage tank into the backwater tank for recycling and reuse, so that the utilization rate of the hydrogen-rich nutrient solution for soilless culture is improved.

[0028] Preferably, the irrigator comprises at least one of a sprinkler head, a drip irrigation head and a pipe irrigator.

[0029] More preferably, the hydrogen-rich nutrient solution supply device for soilless culture further comprises a liquid return system, the liquid return system comprising a liquid return tank and a return pipeline, and the return pipeline returns the excess nutrient solution in the backwater tank to the liquid return tank.

[0030] The liquid return tank is communicated with the premixing tank, and the premixing tank can pump the excess nutrient solution into the premixing tank to prepare and / or dilute the nutrient mother liquor, so that the utilization rate of the nutrient solution in the hydrogen-rich nutrient solution supply device for soilless culture is improved.

[0031] Preferably, the hydrogen-rich nutrient solution supply device for soilless culture further comprises a control system and a plurality of flow meters connected with the control system, the flow meters comprising a liquid flow meter arranged at the liquid outlet of the liquid material unit, a solid flow meter arranged at the solid material supply unit, and / or a liquid supply flow meter arranged at the outlet of the mixing tank.

[0032] Preferably, the mixing tank is internally provided with a first pH sensor, a first hydrogen concentration sensor, a stirring paddle and an optional outlet filter screen.

[0033] The stirring paddle, the first pH sensor and the first hydrogen concentration sensor are respectively connected with the control system.

[0034] Preferably, the irrigation system further comprises a second pH sensor and a second hydrogen concentration sensor arranged in each soilless culture pot, and the second pH sensor and the second hydrogen concentration sensor are respectively connected with the control system.

[0035] Preferably, the irrigation system comprises a sunlight radiation sensor and / or an air temperature and humidity sensor connected with the control system.

[0036] Although the hydroponic system in the prior art is provided with a pH sensor, it is usually used to monitor the mixed nutrient solution, and it is difficult to accurately control the local pH change caused by the release of hydrogen gas from the solid-state hydrogen storage material. The utility model discloses a first pH sensor is arranged in the mixing tank, and the second pH sensor is arranged in each soilless culture pot, so that the local pH change caused by the release of hydrogen gas from the solid-state hydrogen storage material can be accurately detected, and the hydrogen storage material and the nutrient solution ratio in the mixing tank can be regulated and controlled by the control system.

[0037] The utility model at least includes following beneficial effect:

[0038] (1) The soilless culture hydrogen-rich nutrient solution supply device of the utility model not only realizes the supply of hydrogen-rich nutrient solution and the controllable hydrogen concentration through the solid material hydrogen supply unit, but also provides magnesium, calcium, boron and other elements required for plant growth, and the synergistic effect of various nutrient substances promotes plant growth.

[0039] (2) Since the solution after hydrolysis of the solid-state hydrogen storage material is alkaline, it is not conducive to the long-term healthy growth of plants, the utility model is provided with a neutralizing agent tank to provide an acid-base neutralizing agent to the mixing tank, so that the alkaline change caused by the hydrolysis of the solid-state hydrogen storage material can be adjusted in time, and the pH stability of the nutrient solution is ensured.

[0040] (3) In order to timely feedback and adjust the culture conditions of the irrigation system, the utility model is also provided with pH and hydrogen concentration sensors, sunlight irradiation sensors and air temperature and humidity sensors in the mixing tank and each soilless culture pot, and is connected with the control system through signals, so that the pH value of the nutrient solution, the hydrogen concentration, the nutrient solution ratio and the culture environment can be accurately monitored and dynamically regulated, and the supply device under the synergistic cooperation of various components can provide stable hydrogen concentration and suitable nutrient environment for plants, and provide protection for the healthy growth of plants.

[0041] (4) According to the high reactivity of the solid-state hydrogen storage material, the solid feeder of the solid material hydrogen supply unit is designed as a unique double-sealed structure, a corrosion-resistant material and a particle anti-blocking device, which effectively isolates the external moisture and oxygen, prevents the hydrolysis reaction of the solid-state hydrogen storage material in advance and the blockage of the pipeline, and significantly prolongs the storage and service life of the solid-state hydrogen storage material. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a structure schematic view of the soilless culture hydrogen-rich nutrient solution supply device of the utility model;

[0043] Figure 2 It is a sectional view of the mixing tank of the utility model.

[0044] The reference numerals are explained as follows: 11 - water tank, 12 - premix tank, 13 - mother liquor tank, 14 - neutralizer tank, 15 - solid material feeding unit, 21 - mixing tank, 211 - first pH sensor, 212 - first hydrogen concentration sensor, 213 - stirring paddle, 31 - soilless culture pot, 32 - irrigation pipeline, 33 - planting rack, 331 - leakage groove, 332 - backwater groove, 41 - backflow tank, 42 - backflow pipeline. DETAILED DESCRIPTION

[0045] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in combination with the description and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0046] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two.

[0047] It should also be noted that the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the goods or devices including a series of elements not only include those elements, but also include other elements not explicitly listed, or include elements inherent to such goods or devices. Without more limitation, the element defined by the sentence "including a" does not exclude the presence of other identical elements in the goods or devices including the element.

[0048] The following will be combined Figure 1 The soilless culture hydrogen-rich nutrient solution supply device provided by the present application is further explained and described as follows:

[0049] A soilless culture hydrogen-rich nutrient solution supply device includes:

[0050] (1) a feeding system, comprising:

[0051] 1.1) liquid material unit, the liquid material unit includes a water tank 11, a mother liquor tank 13, a premix tank 12 and a neutralizer tank 14, the water tank 11 and the mother liquor tank 13 are communicated with the premix tank, for mixing and storing the prepared nutrient solution, the neutralizer tank 14 provides acid-base neutralizer to the mixing tank 21, the water tank 11 and the premix tank are communicated with each mixing tank 21, for mixing and storing the soilless culture hydrogen-rich nutrient solution.

[0052] Optionally, a water purifier is arranged on the pipeline connecting the water tank 11 and the mixing tank 21.

[0053] 1.2) solid material supply unit 15, comprising a tank body and a solid feeder, the solid material supply unit 15 supplies solid hydrogen supply material to the mixing tank 21 through the solid feeder;

[0054] The liquid outlet of the liquid material unit and the solid outlet of the solid material supply unit are respectively communicated to the mixing tank 21 of the mixing unit.

[0055] Further, the liquid outlet of the liquid material unit is provided with a liquid flow meter, and the solid outlet of the solid material supply unit 15 is provided with a solid flow meter.

[0056] Preferably, the solid material supply unit 15 and / or the neutralizing agent tank 14 are fixed to the outer wall of the mixing tank 21.

[0057] (2) a mixing system, comprising a plurality of mixing tanks 21, for mixing and storing the soilless cultivation hydrogen-rich nutrient solution;

[0058] The mixing tank 21 is provided with a first pH sensor 211, a first hydrogen concentration sensor 212, a stirring paddle 213, and an optional outlet filter screen.

[0059] The first pH sensor 211 and the first hydrogen concentration sensor arranged in the mixing tank 21 are used to detect the pH value and the hydrogen concentration in the nutrient solution. When the pH value and the hydrogen concentration reach the preset value and remain stable for a period of time, it is determined that the mixing reaction of the hydrogen-rich nutrient solution is completed, and the irrigation system can be supplied.

[0060] The mixing tank 21 provides the hydrogen-rich nutrient solution to the irrigation pipeline 32 of the irrigation system through the liquid supply port provided with the outlet filter screen.

[0061] Further, the outlet of the mixing tank 21 is provided with a liquid supply flow meter.

[0062] (3) an irrigation system, comprising:

[0063] 3.1) a plurality of soilless cultivation pots 31, each provided with a second pH sensor and a second hydrogen concentration sensor;

[0064] 3.2) an irrigation pipeline 32, the irrigation pipeline 32 inputs the soilless cultivation hydrogen-rich nutrient solution into each soilless cultivation pot 31 through an irrigator;

[0065] The irrigator comprises at least one of a sprinkler head, a drip irrigation head, and a pipe irrigator.

[0066] 3.3) a planting rack 33, provided with a leakage groove 331 and a backwater groove 332 communicated with the liquid outlet end of the leakage groove 331.

[0067] The soilless culture pot 31 is arranged in the seepage groove 331, and the excess hydrogen-rich nutrient solution in the soilless culture pot 31 is discharged into the seepage groove 331 and then discharged from the liquid outlet end of the seepage groove 331 into the water recovery tank 332 for recycling;

[0068] Optionally, the irrigation system is further provided with a sunlight radiation sensor and an air temperature and humidity sensor for multi-directional detection of the plant growth environment.

[0069] (4) a liquid return system, comprising a liquid return tank 41 and a liquid return pipeline 42;

[0070] The liquid return pipeline 42 returns the excess nutrient solution in the water recovery tank 332 to the liquid return tank 41, and the liquid return tank can pump the excess nutrient solution into the premix tank 12.

[0071] In addition, the control system is signal-connected with the stirring paddle 213, the first pH sensor 211, the first hydrogen concentration sensor, the second pH sensor, the second hydrogen concentration sensor, the liquid flow meter, the solid flow meter, the liquid supply flow meter, the sunlight radiation sensor and the air temperature and humidity sensor.

[0072] The control system feeds back the pH value and hydrogen concentration of the hydrogen-rich nutrient solution and the planting pot culture medium through the first pH sensor 211 and the first hydrogen concentration sensor, and the second pH sensor and the second hydrogen concentration sensor, and controls the solid flow meter, the liquid flow meter and the liquid supply flow meter to adjust the ratio and concentration of the solid-state hydrogen storage material and the nutrient solution in the hydrogen-rich nutrient solution, and the supply rate of the hydrogen-rich nutrient solution, so as to meet the optimal environment required by the plant growth.

[0073] Embodiments

[0074] The embodiment provides a soilless culture hydrogen-rich nutrient solution supply device, which specifically comprises:

[0075] (1) a feeding system, comprising:

[0076] 1.1) a liquid material unit, the liquid material unit comprising a water tank, a mother liquor tank, a premix tank and a neutralizing agent tank, the water tank and the mother liquor tank being communicated with the premix tank for mixing and storing the prepared nutrient solution, the neutralizing agent tank providing an acid-base neutralizing agent to the mixing tank, and the water tank and the premix tank being communicated with each mixing tank for mixing and storing the soilless culture hydrogen-rich nutrient solution.

[0077] 1.2) a solid material hydrogen supply unit, comprising a tank body and a solid material feeder, the solid material hydrogen supply unit providing the solid hydrogen supply material to the mixing tank through the solid material feeder;

[0078] The liquid material unit liquid outlet and the solid material unit discharge port are respectively communicated to the mixing tank of the mixing unit;

[0079] Liquid outlet of liquid unit is provided with liquid flow meter, and solid outlet of solid supply unit is provided with solid flow meter;

[0080] The solid supply unit and the neutralizer tank are fixed to the outer wall of the mixing tank.

[0081] (2) a mixing system, three mixing tanks are arranged for mixing and storing the soilless cultivation hydrogen-rich nutrient solution;

[0082] Each mixing tank is respectively provided with a first pH sensor, a first hydrogen concentration sensor, a stirring paddle and an outlet filter screen;

[0083] The mixing tank provides the irrigation system irrigation pipeline with the hydrogen-rich nutrient solution through the liquid supply port provided with the outlet filter screen, and the outlet of the mixing tank is provided with a liquid supply flow meter.

[0084] (3) an irrigation system, comprising:

[0085] 3.1) three soilless cultivation pots, one soilless cultivation pot corresponding to one mixing tank, and a second pH sensor and a second hydrogen concentration sensor being arranged in each of the three soilless cultivation pots;

[0086] 3.2) an irrigation pipeline, the irrigation pipeline inputs the soilless cultivation hydrogen-rich nutrient solution into each soilless cultivation pot through an irrigator, and the irrigator is a drip head.

[0087] 3.3) a planting rack, the planting rack is provided with a leakage groove and a backwater tank communicated with the liquid outlet end of the leakage groove;

[0088] The irrigation system is further provided with a sunlight irradiation sensor and an air temperature and humidity sensor.

[0089] (4) a liquid return system, comprising a liquid return tank and a liquid return pipeline;

[0090] The liquid return pipeline returns the excess nutrient solution in the backwater tank to the liquid return tank, and the return tank can pump the excess nutrient solution into the premix tank.

[0091] (5) a control system, the control system is signal-connected with the stirring paddle, the first pH sensor, the first hydrogen concentration sensor, the second pH sensor, the second hydrogen concentration sensor, the liquid flow meter, the solid flow meter, the liquid supply flow meter, the sunlight irradiation sensor and the air temperature and humidity sensor.

[0092] The operation method of the soilless cultivation hydrogen-rich nutrient solution supply device comprises the following steps:

[0093] S1, filling planting base into the planting pot according to planting requirements, and installing a balance and a drip arrow with appropriate specifications;

[0094] S2, connecting the power supply of the control system, starting the system self-checking and performing water self-cleaning in the soilless cultivation hydrogen-rich nutrient solution supply device.

[0095] S3, replenish the liquid in the water tank, mother liquor tank, premix tank and neutralizer tank;

[0096] S4, input solid-state hydrogen storage material magnesium hydride into the solid hydrogen supply unit;

[0097] S5, set the nutrient solution formula to the control system and start, the system starts to run automatically.

[0098] S6, if the cultivation is completed or needs to be stopped halfway, press the stop button of the control box of the control system, remove the culture medium, remove the plant, repeat step S2 to clean the soilless cultivation hydrogen-rich nutrient solution supply device, and turn off the soilless cultivation hydrogen-rich nutrient solution supply device.

[0099] The system automatic running process of step S5 specifically includes:

[0100] S51, the water in the water tank is pumped by the water pump, and pure water is obtained by filtering treatment through the water purifier. The pure water and the nutrient solution in the mother liquor tank are mixed into the premix tank to obtain the premix nutrient solution.

[0101] S52, the sunlight radiation sensor starts to collect the current sunlight state (such as cumulative radiation value, radiation intensity), combines the soil temperature / humidity, the second pH sensor, the second hydrogen concentration sensor, the air temperature / humidity sensor and the hydrogen, and automatically adjusts the drip irrigation amount and drip irrigation rate according to the formula setting.

[0102] S53, when the sensor data meets the drip irrigation condition, the drip irrigation work starts.

[0103] S54, the premix nutrient solution is introduced into the mixing tank, and at the same time, the solid-state hydrogen storage material in the solid hydrogen supply unit and the neutralizing agent in the neutralizing agent tank are introduced into the mixing tank, and the mixing tank is stirred by the stirring paddle to obtain the hydrogen-rich nutrient solution.

[0104] S55, the first pH sensor and the first hydrogen concentration sensor in the mixing tank are used to detect the reaction state, and when the pH value and the hydrogen concentration of the hydrogen-rich nutrient solution are stable and reach the target maintenance time, it is considered that the reaction is completed. Through the drip irrigation pipeline, it is transported to the drip irrigation head and dripped into the culture medium and absorbed by the plant.

[0105] S56, if the control system detects changes in pH value and hydrogen concentration, the control system combines the first pH sensor and the first hydrogen concentration sensor and the second pH sensor and the second hydrogen concentration sensor to feedback the pH value and the hydrogen concentration in the hydrogen-rich nutrient solution, respectively controls the solid flow meter, the liquid flow meter and the liquid supply flow meter to adjust the ratio and concentration of the solid-state hydrogen storage material and the nutrient solution in the hydrogen-rich nutrient solution, and the supply rate of the hydrogen-rich nutrient solution to meet the preset plant growth conditions.

[0106] S57, the excess hydrogen-rich nutrient solution is collected by the leakage tank and the backwater tank, the excess nutrient solution of the backwater tank is returned to the liquid return tank through the return pipeline, and the liquid return tank is communicated with the premix tank.

[0107] Although the preferred embodiments of the present application have been described, those skilled in the art who once know the basic creative concept can make additional changes and modifications to these embodiments. Therefore, the present application intends to include the preferred embodiments and all changes and modifications falling within the scope of the present application. Obviously, those skilled in the art can make various modifications and changes to the present application without departing from the spirit and scope of the present application.

Claims

1. A hydroponics-based hydrogen-rich nutrient solution supply device, characterized in that, The system comprises a feeding system, a mixing system and an irrigation system. The feeding system comprises a liquid material unit and a solid material feeding unit. The mixing system comprises a plurality of mixing tanks, each of which is in communication with the liquid material unit and the solid material feeding unit, for mixing and storing the soilless cultivation hydrogen-rich nutrient solution. The irrigation system comprises a plurality of soilless cultivation pots and an irrigation pipeline for supplying the soilless cultivation hydrogen-rich nutrient solution to each of the soilless cultivation pots, the irrigation pipeline being in communication with at least one of the mixing tanks.

2. The soilless culture hydrogen-rich nutrient solution supplying apparatus as claimed in claim 1, wherein The liquid material unit comprises a water tank, a mother liquor tank and a premixing tank, the water tank and the mother liquor tank being in communication with the premixing tank, for mixing and storing the prefabricated nutrient solution. The water tank and the premixing tank are in communication with each of the mixing tanks, for mixing and storing the soilless cultivation hydrogen-rich nutrient solution.

3. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 2, wherein The liquid material unit further comprises a neutralizing agent tank fixed to the outer wall of the mixing tank, for supplying the acid-base neutralizing agent to the mixing tank.

4. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 1, wherein The solid material feeding unit comprises a solid material feeder fixed to the outer wall of the mixing tank, for supplying the solid hydrogen-supplying material to the mixing tank.

5. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 1, wherein The irrigation system further comprises a planting rack, a leakage tank, a water return tank and an irrigation device on the planting rack. The soilless cultivation pots are arranged in the leakage tank, and the leakage tank is in communication with the water return tank at the liquid outlet end. The irrigation device is in communication with the irrigation pipeline, for inputting the soilless cultivation hydrogen-rich nutrient solution into each of the soilless cultivation pots.

6. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 5, wherein The irrigation device comprises at least one of a sprinkler head, a drip head and a pipe irrigator.

7. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to any one of claims 1 to 6, wherein The system further comprises a control system and a plurality of flow meters in signal connection with the control system, the flow meters comprising a liquid flow meter arranged at the liquid outlet of the liquid material unit, a solid flow meter arranged at the material outlet of the solid material feeding unit and / or a liquid supply flow meter arranged at the outlet of the mixing tank.

8. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 7, wherein The mixing tank is internally provided with a first pH sensor, a first hydrogen concentration sensor, a stirring paddle and an optional outlet filter screen. The stirring paddle, the first pH sensor and the first hydrogen concentration sensor are in signal connection with the control system, respectively.

9. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 7, wherein The irrigation system further comprises a second pH sensor and a second hydrogen concentration sensor arranged in each of the soilless cultivation pots, the second pH sensor and the second hydrogen concentration sensor being in signal connection with the control system, respectively.

10. The soilless culture hydrogen-rich nutrient solution supplying apparatus according to claim 7, wherein The irrigation system comprises a sunlight irradiation sensor and / or an air temperature and humidity sensor in signal connection with the control system.

Images