Irrigation device and method for promoting growth of plateau crops by using oxygen-enriched nanobubbles

Abstract

The invention relates to the technical field of agricultural irrigation, and provides an irrigation device and method for promoting growth of plateau crops by using oxygen-enriched nano bubbles, oxygen-enriched gas is generated by an oxygen-enriched gas source, and then the oxygen-enriched nano bubbles which exist stably for a long time are generated in irrigation water by using a nano bubble generating device, so that the growth of plateau crops is promoted. The oxygen increasing efficiency and the soil oxygen content of the root system soil environment in the irrigation process are effectively improved, the problems of slow growth and low yield of plateau crops due to oxygen deficiency of root systems are effectively relieved and even solved, the growth of the plateau crops is promoted, and meanwhile the yield of the plateau crops is increased. The irrigation device and method can also be used in other planting processes of slow crop growth and low yield caused by soil oxygen deficit.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural irrigation, and in particular to an irrigation device and method for promoting the growth of plateau crops by utilizing oxygen-rich nano bubbles. Background Art

[0002] Plateau crops are prone to slow growth and low yields. One of the main problems is that the plateau has low air pressure and low oxygen content in the air, which in turn leads to low oxygen content in the soil, which can easily cause root hypoxia. The traditional irrigation method using surface water is difficult to provide sufficient dissolved oxygen for the root soil. The method of adding traditional aeration equipment to the irrigation water is also difficult to solve the above problems. The reason is that the traditional oxygenation method is inefficient and it is difficult to increase the dissolved oxygen concentration in the irrigation water in a short time. On the other hand, since the irrigation pipeline is generally long, the water flow rate in the pipeline is high, forming a large number of negative pressure areas, causing dissolved gases to escape from the water, greatly reducing the dissolved oxygen concentration in the irrigation water. Even if large bubbles enter the soil, they will quickly escape into the atmosphere. So far, there is a lack of effective, practical and feasible irrigation water oxygenation technology to solve the problem of slow growth and low yield of plateau crops caused by root hypoxia.

[0003] Nanobubbles are the last of the three types of bubbles to be discovered and recognized. They were not discovered and observed until the beginning of this century. The controversy over their real existence has only been resolved in recent years by a large amount of experimental data. Nanobubbles are currently defined as bubbles with a diameter less than 1000nm, and the particle size of nanobubbles usually observed is in the range of 50-200nm. Compared with traditional large bubbles, nanobubbles are small in size, and the buoyancy they experience is negligible compared to the impact force of surrounding water molecules on them, which allows nanobubbles to exist stably in the form of Brownian motion in water for a long time; it is precisely because of their long-term stability in water that nanobubbles have become the most effective irrigation water oxygenation technology to date.

[0004] In view of this, the present invention provides an irrigation device and method for promoting the growth of plateau crops by using oxygen-rich nanobubbles. Oxygen-rich gas is generated by an oxygen-rich gas source, and then a nanobubble generating device is used to generate long-term and stable oxygen-rich nanobubbles in irrigation water, which effectively improves the oxygenation efficiency and soil oxygen content of the root soil environment during the irrigation process, thereby effectively alleviating or even solving the problems of slow growth and low yield of plateau crops due to root hypoxia, and promoting the growth of plateau crops. At the same time, the irrigation device and method can also be used in other planting processes in which crops grow slowly and have low yields due to soil hypoxia. Summary of the invention

[0005] The purpose of the present invention is to provide an irrigation device and method for promoting the growth of plateau crops by using oxygen-rich nanobubbles, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An irrigation device and method for promoting the growth of plateau crops by using oxygen-rich nanobubbles, characterized in that it comprises an oxygen-rich oxygen source, an air pipeline, a nanobubble generating device, a water inlet interface and a water outlet interface;

[0008] Among them, the oxygen-enriched gas source is an oxygen cylinder, a pressure swing adsorption oxygen generator, or other device that can provide oxygen-enriched gas with an oxygen content exceeding 20%;

[0009] Among them, the nano bubble generating device is a device that can generate nano-scale bubbles with an average bubble diameter of 10nm-1000nm in water, which is one or more combinations of microporous organic membrane aeration process, microporous inorganic membrane aeration process, hydraulic shear process, mechanical shear process, pressurization and decompression process and temperature reduction and heating process;

[0010] The oxygen-rich gas source is connected to the nanobubble generating device through a gas pipeline to provide the nanobubble generating device with oxygen-rich gas, thereby increasing the oxygen content in the nanobubbles generated by the nanobubble generating device;

[0011] The water inlet interface and the water outlet interface are connected to the water inlet and the water outlet of the irrigation pipe respectively. The irrigation water enters the nano bubble generating device through the water inlet interface, and the generated irrigation water containing oxygen-rich nano bubbles is discharged to the rear irrigation pipeline through the water outlet interface.

[0012] Furthermore, when the pressure of the irrigation pipeline is high or the nanobubble generating device generates nanobubbles by a pressurization and decompression process, compressed air can be used instead of an oxygen-rich air source to provide gas for the nanobubble generating device.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: oxygen-rich gas is generated by an oxygen-rich gas source, and then a nanobubble generating device is used to generate long-term and stable oxygen-rich nanobubbles in the irrigation water, which effectively improves the oxygenation efficiency and soil oxygen content of the root soil environment during the irrigation process, thereby effectively alleviating or even solving the problems of slow growth and low yield of plateau crops due to root hypoxia, and promoting the growth of plateau crops. At the same time, the irrigation device and method can also be used in other planting processes in which crops grow slowly and have low yields due to soil hypoxia. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a process schematic diagram of Example 1 of the present invention.

[0015] Figure 2 This is a schematic diagram of the process of Example 2 of the present invention.

[0016] Figure 3 This is a schematic diagram of the process of Example 3 of the present invention.

[0017] Figure 4 This is a schematic diagram of the process of Example 4 of the present invention.

[0018] Figure 5 This is a schematic diagram of the process of Example 5 of the present invention.

[0019] Serial number in the picture:

[0020] 101 is the front-end irrigation pipeline, 102 is the back-end irrigation pipeline, 103 is the water inlet interface, 104 is the water outlet interface, 105 is the gas-liquid mixing pump, 106 is the gas-water separation tube, 107 is the automatic exhaust valve, 108 is the gas pipeline, 109 is the oxygen cylinder, 201 is the front-end irrigation pipeline, 202 is the back-end irrigation pipeline, 203 is the water inlet interface, 204 is the water outlet interface, 205 is the gas pipeline, 206 is the pressure swing adsorption oxygen generator, 207 is the contact tank, 208 is the fiber membrane tube, 301 is the front-end irrigation pipeline, 302 is the back-end irrigation pipeline, 303 is the water inlet interface, 304 is the water outlet interface, is the outlet joint, 305 is the gas pipeline, 306 is the pressure swing adsorption oxygen generator, 307 is the cylindrical cyclone reactor, 401 is the front-end irrigation pipeline, 402 is the rear-end irrigation pipeline, 403 is the water inlet interface, 404 is the water outlet interface, 405 is the gas pipeline, 406 is the air compressor, 407 is the contact tank, 408 is the flow limiting component, 501 is the front-end irrigation pipeline, 502 is the rear-end irrigation pipeline, 503 is the water inlet interface, 504 is the water outlet interface, 505 is the gas pipeline, 506 is the pressure swing adsorption oxygen generator, 507 is the contact tank, 508 is the heat exchange tube, and 509 is the compression refrigerator. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically limited.

[0024] See also Figure 1 As shown, the present invention provides an irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, Example 1:

[0025] In this example, an oxygen cylinder 109 is used as an oxygen-enriched oxygen source. Oxygen enters the gas-liquid mixing pump 105 through the gas pipeline 108, and irrigation water enters the gas-liquid mixing pump 105 through the front-end irrigation pipeline 101 and the water inlet interface 103. The blades in the gas-liquid mixing pump rotate at a high speed to produce a mechanical cutting effect. Oxygen and irrigation water are fully mixed in the pump to form a large number of nano-scale bubbles; undissolved gas is separated from the irrigation water in the gas-water separation tube 106 and discharged through the automatic exhaust valve 107. The irrigation water containing a large number of oxygen-enriched nano-bubbles enters the rear-end irrigation pipeline 102 through the water outlet interface 104 to achieve oxygen-enriched nano-bubble water irrigation.

[0026] See also Figure 2 As shown, the present invention provides an irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, Example 2:

[0027] In this example, a pressure swing adsorption oxygen generator 206 is used as an oxygen-rich gas source. Oxygen is connected to the fiber membrane tube 208 through an air pipeline 205. Irrigation water enters the contact tank 207 through the water inlet interface 203 through the front irrigation pipeline 201. Oxygen enters the contact tank 207 through the microporous membrane on the surface of the fiber membrane tube 208, forming a large number of nano-scale bubbles in the irrigation water. The irrigation water containing a large number of oxygen-rich nano-bubbles enters the rear irrigation pipeline 202 through the water outlet interface 204 to achieve oxygen-rich nano-bubble water irrigation.

[0028] See also Figure 3 As shown, the present invention provides an irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, Example 3:

[0029] In this example, a pressure swing adsorption oxygen generator 306 is used as an oxygen-enriched oxygen source. Oxygen enters the cyclone reactor 307 through the gas pipeline 305. Irrigation water enters the cylindrical cyclone reactor 307 through the front irrigation pipeline 301 through the water inlet interface 303, and is discharged from the cylindrical cyclone reactor 307 through the water outlet interface 304. The water inlet interface 303 and the outlet joint 304 are all arranged tangentially with the cylindrical cyclone reactor 307, so that the irrigation water forms a rotating flow in the cylindrical cyclone reactor 307. The hydraulic cutting effect generated cuts the oxygen into a large number of nano-sized bubbles. The irrigation water containing a large number of oxygen-enriched nano-bubbles enters the rear irrigation pipeline 302 through the water outlet interface 304 to achieve oxygen-enriched nano-bubble water irrigation.

[0030] See also Figure 4 As shown, the present invention provides an irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, Example 4:

[0031] In this example, an air compressor 406 is used as an air source. The compressed air is connected to the contact tank 407 through the air pipeline 405. The irrigation water enters the contact tank 407 through the front irrigation pipeline 401 through the water inlet interface 403. A flow limiting component 408 is also provided between the contact tank 407 and the water outlet interface 404. The flow limiting component 408 increases the local resistance of the irrigation water flow, resulting in an increase in the pressure in the contact tank 407, thereby increasing the solubility of oxygen in the compressed air in the water, and forming oxygen-saturated irrigation water. After the oxygen-saturated irrigation water is depressurized by the flow limiting component 408, the dissolved oxygen is released to form a large number of nano-level bubbles. The irrigation water containing a large number of oxygen-rich nano-bubbles enters the rear irrigation pipeline 402 through the water outlet interface 404 to achieve oxygen-rich nano-bubble water irrigation.

[0032] See also Figure 5 As shown, the present invention provides an irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, Example 5:

[0033] In this example, a pressure swing adsorption oxygen generator 506 is used as the gas source. Oxygen is connected to the contact tank 507 through the gas pipeline 505. Irrigation water enters the contact tank 507 through the front irrigation pipeline 501 via the water inlet interface 503. The cooling capacity generated by the compression refrigerator 509 reduces the temperature of the irrigation water in the contact tank 507 through the heat exchange tube 508, thereby increasing the solubility of oxygen in the water and forming oxygen-supersaturated irrigation water. The oxygen-supersaturated irrigation water enters the rear irrigation pipeline 502 through the water outlet interface 504. As the temperature of the irrigation water gradually increases, the dissolved oxygen is released to form a large number of nano-sized bubbles, so as to achieve oxygen-enriched nano bubble water irrigation.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: oxygen-rich gas is generated by an oxygen-rich gas source, and then a nanobubble generating device is used to generate long-term and stable oxygen-rich nanobubbles in the irrigation water, which effectively improves the oxygenation efficiency and soil oxygen content of the root soil environment during the irrigation process, thereby effectively alleviating or even solving the problems of slow growth and low yield of plateau crops due to root hypoxia, and promoting the growth of plateau crops. At the same time, the irrigation device and method can also be used in other planting processes in which crops grow slowly and have low yields due to soil hypoxia.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention claimed in the specification. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. An irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, characterized in that: It includes an oxygen-rich oxygen source, an air pipeline, a nano bubble generating device, a water inlet interface and a water outlet interface; Among them, the oxygen-enriched gas source is an oxygen cylinder, a pressure swing adsorption oxygen generator, or other device that can provide oxygen-enriched gas with an oxygen content exceeding 20%; Among them, the nanobubble generating device is a device that can generate nano-scale bubbles with an average bubble diameter of 10nm-1000nm in water. It is one or more combinations of microporous organic membrane aeration process, microporous inorganic membrane aeration process, hydraulic shear process, mechanical shear process, pressurization and decompression process and cooling and heating process. The oxygen-rich gas source is connected to the nanobubble generating device through a gas pipeline to provide the nanobubble generating device with oxygen-rich gas, thereby increasing the oxygen content in the nanobubbles generated by the nanobubble generating device; The water inlet interface and the water outlet interface are connected to the water inlet and the water outlet of the irrigation pipe respectively. The irrigation water enters the nano bubble generating device through the water inlet interface, and the generated irrigation water containing oxygen-rich nano bubbles is discharged to the rear irrigation pipeline through the water outlet interface.

2. An irrigation device and method for promoting the growth of plateau crops using oxygen-rich nanobubbles, characterized in that: Furthermore, when the pressure of the irrigation pipeline is high or the nanobubble generating device generates nanobubbles by a pressurization and decompression process, compressed air can be used instead of an oxygen-rich air source to provide gas for the nanobubble generating device.

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