Nutrient solution irrigation system and method of using the same

Abstract

The present application relates to soilless culture technical field, disclose a kind of nutrient solution irrigation system and its using method.The above-mentioned nutrient solution irrigation system includes: nutrient solution pool, liquid storage tank, oxygen generator, ozone generator, fertilizer distributor and cultivation tank.Liquid storage zone and disinfection aeration zone are equipped in the liquid storage tank, and the liquid storage zone is communicated with disinfection aeration zone by via hole;Nutrient solution pool is communicated with disinfection aeration zone, and the liquid storage zone is connected with cultivation tank by fertilizer distributor, and cultivation tank is communicated with nutrient solution pool;Oxygen generator is communicated with disinfection aeration zone by ozone generator, and ozone generator is connected with cultivation tank.The system transports nutrient solution in nutrient solution pool to disinfection aeration zone;Start oxygen generator and ozone generator, generate ozone into disinfection aeration zone and mix with nutrient solution, after processing, nutrient solution enters liquid storage zone and enters cultivation tank by fertilizer distributor to provide nutrition for crop.The application can realize healthy recycling of nutrient solution in soilless culture process, save water and fertilizer, and protect the environment.

Description

Technical Field

[0001] The present invention relates to the technical field of soilless cultivation, and in particular to a nutrient solution irrigation system and a use method thereof. Background Art

[0002] Nutrient solution replaces soil in providing crops with water, nutrients, and oxygen, enabling their normal growth. During the operation of closed soilless cultivation systems, the nutrient solution accumulates certain toxins. Therefore, nutrient solution is typically disposed of once. However, since nutrient solution contains a large number of chemicals, discharging it into the natural environment would result in a significant waste of water and fertilizer resources, as well as environmental pollution. Therefore, closed nutrient solution recycling in soilless cultivation systems can be adopted, disinfecting and reusing the nutrient solution, significantly conserving fertilizer and water resources and reducing environmental pollution.

[0003] In the related art, the recycling efficiency of the nutrient solution is not high, and the disinfection method for the recycled nutrient solution is complicated, the disinfection method is single, and the processing efficiency and disinfection effect are not ideal. Summary of the Invention

[0004] The embodiment of the present invention provides a nutrient solution irrigation system and a method for using the same, which can at least solve the problem in the prior art that nutrient solution is difficult to disinfect during recycling.

[0005] The embodiment of the present invention provides a nutrient solution irrigation system, comprising: a nutrient solution pool, a liquid storage tank, an oxygen generator, an ozone generator, a fertilizer applicator, and a cultivation tank;

[0006] The liquid storage tank is provided with a liquid storage space, a partition is provided in the liquid storage tank to separate the liquid storage space into a liquid storage area and a disinfection aeration area, the partition is provided with a through hole, and the liquid storage area is connected to the disinfection aeration area through the through hole;

[0007] The nutrient solution pool is connected to the disinfection and aeration area through a first branch pipe, the liquid storage area is connected to the fertilizer applicator through a second branch pipe, the fertilizer applicator is connected to the cultivation tank through a third branch pipe, and the cultivation tank is connected to the nutrient solution pool through a fourth branch pipe;

[0008] The oxygen generator is connected to the ozone generator, the ozone generator is communicated with the disinfection aeration area through a fifth branch pipe, and the ozone generator is connected to the cultivation tank through a sixth branch pipe.

[0009] According to an embodiment of the present invention, a nutrient solution irrigation system is provided, which further includes a liquid guide tube. The liquid guide tube is provided through the through hole, and the liquid storage area is connected to the disinfection and aeration area through the liquid guide tube.

[0010] According to the nutrient solution irrigation system provided by the embodiment of the present application, the liquid guide pipe comprises a first pipe body and a second pipe body, the first pipe body is arranged in the sterilization and aeration area, and the second pipe body is arranged in the liquid storage area; the first pipe body is an arc-shaped structural member, and the opening of the first pipe body faces the bottom wall of the liquid storage space.

[0011] According to the nutrient solution irrigation system provided by the embodiment of the present application, the nutrient solution irrigation system further comprises an ultrasonic oscillator arranged on the bottom wall of the liquid storage space.

[0012] According to the nutrient solution irrigation system provided by the embodiment of the present application, the nutrient solution irrigation system further comprises a gas pump arranged in the fifth branch pipe through a seventh branch pipe.

[0013] According to the nutrient solution irrigation system provided by the embodiment of the present application, the nutrient solution irrigation system further comprises a first pump body and a filter, which are arranged in the first branch pipe in sequence along the flow direction of the nutrient solution.

[0014] According to the nutrient solution irrigation system provided by the embodiment of the present application, the nutrient solution irrigation system further comprises a second pump body and a flow sensor, which are arranged in the second branch pipe in sequence along the flow direction of the nutrient solution.

[0015] In another aspect, the embodiment of the present application further provides a use method of the nutrient solution irrigation system, which comprises:

[0016] delivering the nutrient solution in the nutrient solution pool to the sterilization and aeration area;

[0017] starting the oxygen generator and the ozone generator;

[0018] the ozone generated by the ozone generator enters the sterilization and aeration area and is mixed with the nutrient solution, the treated nutrient solution enters the liquid storage area, and the nutrient solution in the liquid storage area enters the cultivation tank after passing through the fertilizer applicator.

[0019] The use method of the nutrient solution irrigation system provided by the embodiment of the present application comprises:

[0020] delivering the nutrient solution in the nutrient solution pool to the sterilization and aeration area;

[0021] starting the oxygen generator;

[0022] the oxygen generated by the oxygen generator enters the sterilization and aeration area and is mixed with the nutrient solution, the treated nutrient solution enters the liquid storage area, and the nutrient solution in the liquid storage area enters the cultivation tank after passing through the fertilizer applicator.

[0023] The use method of the nutrient solution irrigation system provided by the embodiment of the present application comprises:

[0024] Start the oxygen concentrator and ozone generator;

[0025] The ozone generated by the ozone generator enters the cultivation trough to sterilize and disinfect the cultivation trough and the plant roots located in the cultivation trough.

[0026] The nutrient solution irrigation system and its use method provided by the embodiment of the present invention are as follows: the nutrient solution flows into the nutrient solution pool through the cultivation trough, and then flows into the disinfection aeration area through the first branch pipe. The disinfection aeration area is connected to the oxygen generator and the ozone generator. The aeration head built into the disinfection aeration area introduces the generated ozone or oxygen into the nutrient solution in the form of bubbles and promotes gas-liquid mixing. The oxygenated or disinfected nutrient solution flows into the fertilizer applicator through the second branch pipe. The fertilizer applicator adds a certain amount of high-concentration nutrient solution or fertilizer to the nutrient solution to increase the content of nutrients lost during the nutrient solution circulation process. The treated nutrient solution flows into the cultivation trough and provides the crops with the water, nutrients and oxygen required for growth. When there is no nutrient solution in the pipeline, the oxygen generator and the ozone generator are turned on to generate ozone. The ozone flows through each pipeline and flows into the cultivation trough pipeline to disinfect the nutrient solution irrigation system pipeline. In this way, the nutrient solution circulation disinfection and the disinfection of the pipeline and device are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of the nutrient solution irrigation system provided by the present invention;

[0029] Figure 2 This is one of the flow charts of the method for using the nutrient solution irrigation system provided by the present invention;

[0030] Figure 3 This is the second flow chart of the method for using the nutrient solution irrigation system provided by the present invention;

[0031] Figure 4 This is the third flow chart of the method for using the nutrient solution irrigation system provided by the present invention.

[0032] Reference numerals:

[0033] 1. Nutrient solution tank; 12. First branch pipe; 121. First pump body; 122. First check valve; 123. Filter;

[0034] 2. Liquid storage tank; 21. Liquid storage space; 211. Disinfection aeration area; 2111. Aeration head; 212. Liquid storage area; 22. Liquid guide tube; 221. First tube body; 222. Second tube body; 25. Second branch pipe; 251. First solenoid valve; 252. Second pump body; 253. Flow sensor;

[0035] 3. Oxygen concentrator;

[0036] 4. Ozone generator; 41. Third check valve; 42. Fifth branch pipe; 421. Second solenoid valve; 46. Sixth branch pipe; 461. Third solenoid valve;

[0037] 5. Fertilizer applicator; 56. Third branch pipe;

[0038] 6. Cultivation trough; 61. Fourth branch pipe;

[0039] 7. Ultrasonic oscillator;

[0040] 8. Air pump; 842. Seventh branch pipe; 8421. Second check valve. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0043] like Figure 1 As shown, the nutrient solution irrigation system provided by the embodiment of the present invention includes: a nutrient solution pool 1, a liquid storage tank 2, an oxygen generator 3, an ozone generator 4, a fertilizer applicator 5 and a cultivation trough 6.

[0044] The liquid storage tank 2 is provided with a liquid storage space 21. A partition is provided inside the liquid storage tank 2 to separate the liquid storage space 21 into a liquid storage area 212 and a disinfection aeration area 211. The partition is provided with a through hole, and the liquid storage area 212 is connected to the disinfection aeration area 211 through the through hole.

[0045] The shape of the liquid storage tank 2 can be a vertical cylindrical barrel. The size of the liquid storage space 21 should be adapted to the scale of the nutrient irrigation system. If the liquid storage space 21 is too large, the height of the nutrient solution in the tank is difficult to reach the height of the through hole, and the nutrient solution cannot flow from the disinfection aeration zone 211 to the liquid storage zone 212 through the hole, thereby causing the circulation to terminate. If the liquid storage space 21 is too small, the flow of the nutrient solution is greater than the capacity of the liquid storage space 21, which can cause the internal pressure of the liquid storage space 21 to be too high. In general, the capacity of the liquid storage space 21 should be sufficient to maintain the height of the nutrient solution above the height of the through hole and have sufficient safety margin in the liquid storage space 21 during the circulation process.

[0046] The top of the liquid storage tank 2 is provided with a liquid inlet, which is in communication with the disinfection aeration zone 211. The bottom of the liquid storage tank 2 is provided with a liquid outlet, which is in communication with the liquid storage zone 212. The nutrient solution pool 1 is in communication with the liquid inlet of the disinfection aeration zone 211 through the first branch pipe 12 to allow the nutrient solution to flow into the disinfection aeration zone 211. The liquid outlet of the liquid storage zone 212 is in communication with the fertilizer applicator 5 through the second branch pipe 25 to allow the nutrient solution to flow into the fertilizer applicator 5. The fertilizer applicator 5 is connected to the cultivation tank 6 through the third branch pipe 56 to allow the treated nutrient solution to flow into the cultivation tank 6 and irrigate the crops in the cultivation tank 6. The cultivation tank 6 is in communication with the nutrient solution pool 1 through the fourth branch pipe 61, thereby realizing the recycling of the nutrient solution.

[0047] The oxygen generator 3 is connected to the ozone generator 4, and the oxygen generator 3 provides raw materials for the ozone generator 4. The ozone generator 4 generates ozone required for disinfection. The disinfection aeration zone 211 is in communication with the ozone generator 4 through the fifth branch pipe 42. The ozone generator 4 is connected to the cultivation tank 6 through the sixth branch pipe 46.

[0048] Specifically, one side of the cultivation tank 6 is provided with a liquid outlet, which is connected to one end of the fourth branch pipe 61, and the other end of the fourth branch pipe 61 is connected to the nutrient solution pool 1. In order not to interfere with the ground facilities and to make the pipeline force uniform, the middle part of the fourth branch pipe 61 can be buried and laid.

[0049] It should be noted that in order to allow the nutrient solution in the cultivation tank 6 to flow smoothly into the nutrient solution pool 1, a water pump can be added to the fourth branch pipe 61; or when the fourth branch pipe 61 is installed, the height of the fourth branch pipe 61 gradually decreases along the direction of the flow of the nutrient solution, and the pipe diameter gradually increases, so as to utilize the gravity to make the nutrient solution flow into the nutrient solution pool 1 from the cultivation tank 6.

[0050] The shape of the nutrient solution pool 1 is indefinite, for example, a square pool, a cylindrical pool or an urn-shaped pool, etc. When the nutrient solution pool 1 is built on the ground, the top of the nutrient solution pool 1 can have or not have a top cover. When the nutrient solution pool is built underground, the nutrient solution pool 1 needs to be treated for impermeability and covered. It can be understood that the volume of the nutrient solution pool 1 is adapted to the cultivation area. For example, a cultivation area of 1 000-2 000 m 2 should be adapted to a volume of 12 m 3Match the above nutrient solution pool 1; 300m 2 The cultivation area, the volume of nutrient solution pool 1 should be 4m 3 above.

[0051] The nutrient solution in the nutrient solution pool 1 flows into the disinfection aeration zone 211 through the first branch pipe 12 and is disinfected and sterilized in the disinfection aeration zone 211 .

[0052] It should be noted that ozone, ultraviolet rays and other substances can disinfect the nutrient solution, but compared with other methods, ozone has the best disinfection effect. If there is sufficient aeration time and concentration, ozone can produce hydroxyl compounds and hydrogen peroxide to synergistically kill all organic matter in the water without changing the original nutrient solution components.

[0053] Specifically, the oxygen generator 3 is connected to the ozone generator 4 . The oxygen generator 3 is used to generate pure oxygen. The ozone generator uses the oxygen generated by the oxygen generator 3 as a raw material to generate ozone gas and transports it to the disinfection aeration area 211 through the fifth branch pipe 42 .

[0054] Among them, aeration heads 2111 are evenly provided at the bottom of the disinfection aeration area 211, and the fifth branch pipe 42 is connected to the aeration head 2111. The gas in the aeration head 2111 enters the liquid in the form of bubbles to achieve gas-liquid mixing.

[0055] It should be noted that aeration devices are generally divided into two types: forced aeration and mechanical aeration. Forced aeration utilizes a blower or aerator, along with various diffusers, to introduce ozone in the form of fine bubbles into the nutrient solution, causing it to rise or circulate, thereby ensuring thorough contact and mixing between the ozone and the nutrient solution. Mechanical aeration utilizes devices such as impellers to introduce bubbles. It is understood that while ensuring ozone supply, the aeration equipment also generates a mixing effect within the disinfection aeration zone 211 to promote thorough mixing of the nutrient solution and ozone.

[0056] The disinfected nutrient solution enters the liquid storage area 212 through the through hole and flows into the fertilizer applicator 5 via the second branch pipe 25. The fertilizer applicator 5 can add high-concentration nutrient solution or fertilizer to the disinfected nutrient solution to increase the nutrients lost during the nutrient solution circulation process.

[0057] There are many types of fertilizer spreaders 5, such as Venturi fertilizer spreaders, hydraulic proportional fertilizer spreaders, and electric proportional fertilizer spreaders. Specifically, if an electric proportional fertilizer spreader is selected, after the nutrient solution enters the fertilizer spreader 5, the controller of the fertilizer spreader 5 will detect the pipeline flow rate and inject fertilizer or high-concentration nutrient solution into the downstream pipeline, i.e., the third branch pipe 56, according to the set fertilizer injection ratio to achieve mixing of the nutrient solution and fertilizer.

[0058] The processed nutrient solution flows to the cultivation tank 6 through the third branch pipe 56, thereby providing water and nutrients for the growth of crops.

[0059] It should be noted that the nutrient solution irrigation system can not only provide water and nutrients to crops, but also provide oxygen to crops.

[0060] Specifically, the nutrient solution enters the disinfected aeration zone 211 of the liquid storage tank 2 via the first branch pipe 12. Simultaneously, the oxygen generator 3 operates to generate pure oxygen, the ozone generator 4 is turned off, and the oxygen flows into the aeration head 2111 via the fifth branch pipe 42. Aeration head 2111 generates and maintains effective oxygen-nutrient solution contact, thereby increasing the dissolved oxygen content of the nutrient solution. The highly oxygenated nutrient solution flows through the orifice into the liquid storage zone 212 and then through the second branch pipe 25 to the fertilizer applicator. The fertilizer applicator introduces external fertilizer into the nutrient solution, replenishing nutrients lost during the circulation process due to crop consumption and flow losses. The treated nutrient solution then flows into the cultivation trough 6 via the third branch pipe 56, oxygenating the crop roots.

[0061] Alternatively, the oxygen generator 3 operates to generate pure oxygen, and the ozone generator 4 is turned off. The pure oxygen directly enters the cultivation tank 6 through the sixth branch pipe 46, thereby increasing the oxygen content of the crops by increasing the oxygen content of the air.

[0062] It is particularly important to note that the nutrient solution irrigation system of the embodiment of the present invention not only realizes nutrient solution circulation and provides crops with water, nutrients, and oxygen required for growth, but also disinfects the pipeline system to ensure that the nutrient solution is not contaminated by dirty pipelines during transmission.

[0063] Specifically, when there is no nutrient solution in the pipeline, the oxygen concentrator 3 and the ozone generator 4 are turned on to generate ozone, which circulates in the pipeline and fills the entire pipeline system to disinfect it. It is particularly important to note that the ozone can flow into the pipeline of the cultivation tank 6 through the sixth branch pipe 46 and disinfect it.

[0064] In an embodiment of the present invention, the nutrient solution waste flows into the nutrient solution pool 1 through the cultivation trough 6 and flows into the disinfection aeration area 211 through the first branch pipe 12. The disinfection aeration area 211 is connected to the oxygen concentrator 3 and the ozone generator 4. The aeration head 2111 built into the disinfection aeration area 211 introduces the generated ozone or oxygen into the nutrient solution in the form of bubbles and promotes gas-liquid mixing. The oxygenated or disinfected nutrient solution flows into the fertilizer applicator 5 through the second branch pipe 25. The fertilizer applicator 5 adds a certain amount of high-concentration nutrient solution or fertilizer to the nutrient solution to increase the nutrients lost during the nutrient solution circulation process. The treated nutrient solution flows into the cultivation trough 6 and provides the crops with the water, nutrients, and oxygen required for growth. Furthermore, when there is no nutrient solution in the pipeline, the oxygen concentrator 3 and the ozone generator 4 are turned on to generate ozone. The ozone flows through each pipeline and flows into the cultivation trough 6 pipeline to disinfect the nutrient solution irrigation pipeline system or the root system of the hydroponic plants.

[0065] In an optional embodiment, if Figure 1As shown, the nutrient solution irrigation system further comprises a liquid guide pipe 22, which is arranged in the through hole and connects the liquid storage area 212 and the disinfection aeration area 211.

[0066] Specifically, ozone or oxygen is aerated by the aeration head 2111 and enters the disinfection aeration area 211, and the gas is mixed with the nutrient solution in the disinfection aeration area 211 to achieve the disinfection or oxygenation effect. If the mixing time is short, ozone and oxygen cannot be completely dissolved in the nutrient solution and play the corresponding role. The arrangement of the liquid guide pipe 22 can prolong the mixing time of the nutrient solution and the gas, and the gas-liquid mixture needs to flow into the liquid storage area 212 through the liquid guide pipe 22. It can be understood that the longer the liquid guide pipe 22 is, the longer the increased gas-liquid mixing time is, and the better the gas-liquid mixing effect is.

[0067] In an optional embodiment, the liquid guide pipe 22 comprises a first pipe body 221 and a second pipe body 222, the first pipe body 221 is arranged in the disinfection aeration area 211, and the second pipe body 222 is arranged in the liquid storage area 212; the first pipe body 221 is an arc-shaped structure, and the opening of the first pipe body 221 faces the bottom wall of the liquid storage space 21.

[0068] Among them, the opening of the first pipe body 221 can be just above the aeration head 2111, and the bubbles generated by the aeration head 2111 enter the nutrient solution, and under the action of the upward airflow generated by the aeration device, the gas-liquid mixture can enter the liquid guide pipe 22 along the opening of the first pipe body 221 and fully mix in the liquid guide pipe 22. It can be understood that, under the condition of ensuring the unobstructed flow of the gas-liquid mixture in the liquid guide pipe 22, the arc of the first pipe body arc bend is increased as much as possible, so that the mixing time of the gas-liquid mixture in the first pipe body 221 can be increased.

[0069] Further, the inner diameters of the first pipe body 221 and the second pipe body 222 can be the same or different, for example, the cross-sectional area of the liquid guide pipe 22 gradually decreases from the first pipe body 221 to the second pipe body 222, so as to increase the flow rate of the nutrient solution in the pipe, and the increase of the flow rate can strengthen the gas-liquid mixing effect in the pipe.

[0070] In an optional embodiment, as shown in the accompanying drawings, Figure 1 As shown, the nutrient solution irrigation system further comprises an ultrasonic oscillator 7 arranged on the bottom wall of the liquid storage space 21.

[0071] It should be noted that the ultrasonic oscillator 7 can use the high-frequency sound waves of ultrasonic waves to generate oscillation to stir and clean the solution.

[0072] Specifically, ozone or oxygen is aerated through the aeration head 2111 and enters the disinfection aeration zone 211 from the bottom. The nutrient solution enters the disinfection aeration zone 211 from the top through the first branch pipe 12. The ultrasonic oscillator 7 is turned on. The high-frequency ultrasonic oscillation promotes the mixing and reaction speed of the nutrient solution and gas in the disinfection aeration zone 211, thereby enhancing the disinfection or oxygenation effect.

[0073] In an optional embodiment, if Figure 1 As shown, the nutrient solution irrigation system further includes an air pump 8 , which is disposed on the fifth branch pipe 42 through a seventh branch pipe 842 .

[0074] It is understandable that when oxygen is generated by the oxygen concentrator 3, or when ozone is generated by the oxygen concentrator 3 and the ozone generator 4, the gas can flow in the pipeline, but there is no guarantee that the flowing gas has sufficient kinetic energy to enter the far end of the pipeline. Therefore, an air pump 8 is added to promote the flow of gas and increase the gas coverage area.

[0075] It should be noted that to prevent the high-pressure gas generated by the air pump 8 from flowing back, a second check valve 8421 is added to the seventh branch pipe 842. To prevent the gas generated by the oxygen concentrator 3 and the ozone generator 4 from flowing back, a third check valve 41 is added to the gas outlet of the ozone generator 4.

[0076] Furthermore, in order to control the flow direction of the high-pressure gas in the air pump, a second solenoid valve 421 and a third solenoid valve 461 may be added to the fifth branch pipe 42 and the sixth branch pipe 46 respectively.

[0077] Specifically, when the nutrient solution needs to be disinfected, the oxygen concentrator 3 and the ozone generator 4 are turned on to generate ozone, and the ozone gas enters the pipeline system. The air pump 8 and the second check valve 8421 are turned on, and the high-pressure gas generated by the air pump 8 flows into the pipeline through the seventh branch pipe 842. The second solenoid valve 421 is opened and the third solenoid valve 461 is closed. The high-pressure gas generated by the air pump 8 pushes the ozone mixed gas along the fifth branch pipe 42 into the disinfection aeration zone 211, thereby disinfecting the nutrient solution therein.

[0078] Alternatively, the oxygen concentrator 3 and ozone generator 4 are turned on to generate ozone. The air pump 8, the second check valve 8421, and the third solenoid valve 461 are turned on, and the second solenoid valve 421 is closed. The air pump 8 generates high-pressure gas and pushes the ozone through the sixth branch pipe 46 directly into the cultivation tank 6, sterilizing and disinfecting the plant roots therein.

[0079] When oxygenation is needed for crops, this can be achieved by increasing the dissolved oxygen content in the nutrient solution. Specifically, oxygen generator 3 operates to generate oxygen, while ozone generator 4 is turned off. Air pump 8 and second check valve 8421 are turned on, while second solenoid valve 421 is opened and third solenoid valve 461 is closed. The high-pressure gas generated by air pump 8 pushes the oxygen in the pipeline along fifth branch pipe 42 into disinfection aeration zone 211, where it mixes with the nutrient solution, increasing the oxygen content in the nutrient solution and, consequently, the oxygen content in the crops.

[0080] Alternatively, the oxygen generator 3 is turned on to generate oxygen, and the ozone generator 4 is turned off. The air pump 8, the second check valve 8421, and the third solenoid valve 461 are turned on, and the second solenoid valve 421 is closed. The air pump 8 generates high-pressure gas and pushes the oxygen through the sixth branch pipe 46 directly into the cultivation tank 6.

[0081] When disinfecting the nutrient solution irrigation system pipes, turn on the oxygen concentrator 3 and ozone generator 4 to generate ozone. Open the air pump 8, the second check valve 8421, and the second solenoid valve 421, and close the third solenoid valve 461. The high-pressure gas generated by the air pump pushes the ozone mixture into the pipes through the fifth branch pipe 42, disinfecting the entire pipe system.

[0082] Alternatively, when the cultivation trough pipeline needs to be disinfected, turn on the oxygen generator 3 and the ozone generator 4 to generate ozone, turn on the air pump 8, the second check valve 8421 and the third solenoid valve 461, close the second solenoid valve 421, and the high-pressure gas generated by the air pump will push the ozone mixed gas into the cultivation trough pipeline through the sixth branch pipe 46 and disinfect it.

[0083] In an optional embodiment, the nutrient solution irrigation system further includes a first pump body 121 and a filter 123 , and the first pump body 121 and the filter 123 are sequentially arranged on the first branch pipe 12 along the flow direction of the nutrient solution.

[0084] The first pump body 121 is provided on the first branch pipe 12 and pumps the nutrient solution from the nutrient solution pool 1 to the liquid storage tank 2 , thereby improving the transmission efficiency.

[0085] A filter 123 is provided between the first pump body 121 and the liquid storage tank 2 to filter out impurities such as sand, gravel, and dust in the nutrient solution. There are many types of filters 123, such as centrifugal filters, laminated filters, and automatic backwash filters.

[0086] Specifically, if a laminated filter is used, a large number of annular discs with grooves are locked and stacked together to form a cylindrical filter element. When the nutrient solution is delivered to the liquid storage tank 2 through the first pump body 121, it flows through the laminated discs. The disc walls and grooves collect and intercept impurities in the nutrient solution. The filtered nutrient solution then flows out of the main filter channel and into the liquid storage tank 2.

[0087] Furthermore, a first check valve 122 may be provided between the first pump body 121 and the filter 123 to prevent the nutrient solution from flowing back.

[0088] In an optional embodiment, if Figure 1 As shown, the nutrient solution irrigation system further includes a second pump body 252 and a flow sensor 253 , which are sequentially arranged on the second branch pipe 25 along the flow direction of the nutrient solution.

[0089] Among them, the setting of the second pump body 252 can transport the nutrient solution from the liquid storage tank 2 to the fertilizer spreader 5, and the flow sensor 253 is used to calculate and represent the cumulative flow of the nutrient solution flowing through the cross-section of the second branch pipe 25. The user estimates the amount of fertilizer that the fertilizer spreader 5 needs to add to the nutrient solution through the nutrient solution flow rate.

[0090] Furthermore, a first solenoid valve 251 may be provided between the second pump body 252 and the liquid storage tank 2 to control the flow of the nutrient solution flowing into the second branch pipe 25 and prevent the nutrient solution from flowing back.

[0091] In an optional embodiment, if Figure 2 As shown, the method for using the nutrient solution irrigation system includes:

[0092] S100 , the nutrient solution in the nutrient solution tank 1 is transported to the disinfection aeration area 211 .

[0093] Specifically, the nutrient solution is transported by the first pump body 121 to the disinfection aeration area 211 of the liquid storage tank 2 . During the transportation process, the nutrient solution passes through the filter 123 and impurities contained in the nutrient solution are filtered.

[0094] S200, start the oxygen generator 3 and the ozone generator 4.

[0095] At the same time, the oxygen generator 3 and the ozone generator 4 operate and generate ozone gas.

[0096] S300, the ozone generated by the ozone generator 4 enters the disinfection aeration area 211 and mixes with the nutrient solution. The treated nutrient solution enters the liquid storage area 212. The nutrient solution in the liquid storage area 212 enters the cultivation tank 6 after passing through the fertilizer applicator 5.

[0097] The air pump 8, second check valve 8421, and second solenoid valve 421 are opened, and the third solenoid valve 461 is closed. The high-pressure gas generated by the air pump 8 pushes the ozone mixture through the fifth branch pipe 42 and into the aeration device. The ozone mixture then enters the disinfection aeration area 211 in the form of bubbles through the aeration head 2111. The ultrasonic oscillator 7 is turned on to promote mixing of the ozone and nutrient solution. The gas-liquid mixture flows through the liquid conduit 22 into the liquid storage area 212 and then through the second branch pipe 25 into the fertilizer spreader 5. At this time, the first solenoid valve 251, second pump body 252, and flow sensor 253 connected to the second branch pipe 25 are opened. The second pump body 252 delivers the nutrient solution to the fertilizer spreader 5. The flow sensor 253 is used to calculate and display the cumulative flow rate of the nutrient solution flowing through the cross-section of the second branch pipe 25. The flow rate value allows the user to estimate the amount of fertilizer to be added to the nutrient solution by the fertilizer spreader 5. The fertilizer spreader 5 absorbs the fertilizer solution from the outside into the nutrient solution to replenish the nutrients lost due to crop consumption and flow loss during the circulation process. The treated nutrient solution flows into the cultivation trough 6 through the third branch pipe 56 and provides water and nutrients to the crops.

[0098] In an optional embodiment, if Figure 3 As shown, the method for using the nutrient solution irrigation system includes:

[0099] S101 , transporting the nutrient solution in the nutrient solution tank 1 to the disinfection aeration area 211 .

[0100] Specifically, the nutrient solution is pumped to the disinfection aeration area 211 of the liquid storage tank 2 through the first pump body 121 and is filtered of impurities through the filter 123 .

[0101] S201, start the oxygen generator 3.

[0102] At the same time, the oxygen generator 3 works and generates pure oxygen, and the ozone generator 4 is turned off.

[0103] S301, the oxygen generated by the oxygen generator 3 enters the disinfection aeration area 211 and mixes with the nutrient solution. The treated nutrient solution enters the liquid storage area 212. The nutrient solution in the liquid storage area 212 enters the cultivation tank 6 after passing through the fertilizer applicator 5.

[0104] The air pump 8 and second check valve 8421 are turned on, the second solenoid valve 421 is opened, and the third solenoid valve 461 is closed. The high-pressure gas generated by the air pump 8 pushes the oxygen in the pipeline through the fifth branch pipe 42 into the disinfection aeration area 211, where it is generated and maintained through the aeration head 2111 to create and maintain effective oxygen-nutrient solution contact. Furthermore, the ultrasonic oscillator 7 is turned on to enhance gas-liquid mixing, thereby increasing the dissolved oxygen content in the nutrient solution. The nutrient solution flows through the liquid conduit 22 into the liquid storage area 212. The first solenoid valve 251, second pump body 252, and flow sensor 253 are turned on. The second pump body 252 transfers the nutrient solution from the liquid storage area 212 to the fertilizer applicator 5. The flow sensor 253 calculates and displays the cumulative flow rate of the nutrient solution flowing through the cross-section of the second branch pipe 25. Based on the nutrient solution flow rate provided by the flow sensor 253, the fertilizer applicator 5 adds a certain amount of fertilizer to the nutrient solution to replenish nutrients lost during the nutrient solution circulation process. The oxygenated nutrient solution flows through the third branch pipe 56 into the cultivation tank 6, where it oxygenates the crops.

[0105] Alternatively, oxygen can be directly added to the crops. Specifically, oxygen generator 3 is turned on to generate oxygen, while ozone generator 4 is turned off. Air pump 8, second check valve 8421, and third solenoid valve 461 are turned on, and second solenoid valve 421 is closed. Air pump 8 generates high-pressure gas, which pushes oxygen through sixth branch pipe 46 directly into the plant roots in cultivation trough 6.

[0106] In an optional embodiment, if Figure 4 As shown, the method for using the nutrient solution irrigation system includes:

[0107] S102, start the oxygen generator 3 and the ozone generator 4.

[0108] Specifically, the oxygen concentrator 3 and the ozone generator 4 are turned on to generate ozone.

[0109] In step S202 , the ozone generated by the ozone generator 4 enters the cultivation tank 6 to sterilize and disinfect the cultivation tank 6 and the plant roots therein.

[0110] Open the air pump 8, the second check valve 8421 and the third solenoid valve 461, and close the second solenoid valve 421. The air pump 8 generates high-pressure gas and pushes ozone through the sixth branch pipe 46 to flow directly into the cultivation tank 6 and sterilize and disinfect the plant roots therein.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A nutrient solution irrigation system, characterized in that: include: Nutrient solution pool, storage tank, oxygen generator, ozone generator, fertilizer applicator and cultivation tank; The liquid storage tank is provided with a liquid storage space, a partition is provided in the liquid storage tank to separate the liquid storage space into a liquid storage area and a disinfection aeration area, the partition is provided with a through hole, and the liquid storage area is connected to the disinfection aeration area through the through hole; The nutrient solution pool is connected to the disinfection and aeration area through a first branch pipe, the liquid storage area is connected to the fertilizer applicator through a second branch pipe, the fertilizer applicator is connected to the cultivation tank through a third branch pipe, and the cultivation tank is connected to the nutrient solution pool through a fourth branch pipe; The oxygen generator is connected to the ozone generator, the ozone generator is connected to the disinfection aeration area through a fifth branch pipe, and the ozone generator is connected to the cultivation tank through a sixth branch pipe; a liquid conduit, the liquid conduit being passed through the through hole, the liquid storage area being connected to the disinfection and aeration area via the liquid conduit; The liquid guide tube includes a first tube body and a second tube body, the first tube body is arranged in the disinfection and aeration area, and the second tube body is arranged in the liquid storage area; the first tube body is an arc-shaped structural member, and the opening of the first tube body faces the bottom wall of the liquid storage space; Aeration heads are evenly arranged at the bottom of the disinfection aeration zone, the fifth branch pipe is connected to the aeration head, and the opening of the first pipe body is located above the aeration head.

2. The nutrient solution irrigation system according to claim 1, characterized in that: The nutrient solution irrigation system further includes an ultrasonic oscillator, which is arranged on the bottom wall of the liquid storage space.

3. The nutrient solution irrigation system according to claim 1, characterized in that: The nutrient solution irrigation system further includes an air pump, which is arranged on the fifth branch pipe through a seventh branch pipe.

4. The nutrient solution irrigation system according to claim 1, characterized in that: The nutrient solution irrigation system further includes a first pump body and a filter, and the first pump body and the filter are sequentially arranged on the first branch pipe along the flow direction of the nutrient solution.

5. The nutrient solution irrigation system according to claim 1, characterized in that: The nutrient solution irrigation system further includes a second pump body and a flow sensor, and the second pump body and the flow sensor are sequentially arranged on the second branch pipe along the flow direction of the nutrient solution.

6. A method for using the nutrient solution irrigation system according to any one of claims 1 to 5, characterized in that: include: Transport the nutrient solution in the nutrient solution tank to the disinfection aeration area; Start the oxygen concentrator and ozone generator; The ozone generated by the ozone generator enters the disinfection aeration area and mixes with the nutrient solution. The treated nutrient solution enters the liquid storage area. The nutrient solution in the liquid storage area enters the cultivation tank after passing through the fertilizer applicator.

7. A method for using the nutrient solution irrigation system according to any one of claims 1 to 5, characterized in that: include: Transport the nutrient solution in the nutrient solution tank to the disinfection aeration area; Start the oxygen concentrator; The oxygen generated by the oxygen generator enters the disinfection aeration area and is mixed with the nutrient solution. The treated nutrient solution enters the liquid storage area. The nutrient solution in the liquid storage area enters the cultivation tank after passing through the fertilizer applicator.

8. A method for using the nutrient solution irrigation system according to any one of claims 1 to 5, characterized in that: include: Start the oxygen concentrator and ozone generator; The ozone generated by the ozone generator enters the cultivation trough to sterilize and disinfect the cultivation trough and the plant roots located in the cultivation trough.

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