Nanometer bubble water high-frequency irrigation device and method

Abstract

The invention relates to the technical field of agricultural production, in particular to a nanobubble water high-frequency irrigation device and method.The nanobubble water high-frequency irrigation device comprises a water tank, a nanobubble generating device, an irrigation pipeline, a branch pipeline and a tail end drip irrigation pipe, the branch pipeline is provided with a circulation pipeline, a backflow pipeline is arranged at the tail end of the irrigation pipeline, and the internal pressure of the backflow pipeline is reduced; when the nanometer bubble water is used for irrigation, the nanometer bubble water preferentially returns to the water storage tank through the backflow pipeline, after the whole irrigation pipeline is filled with the newly prepared nanometer bubble water, the backflow pipeline is closed, the newly prepared nanometer bubble water is conveyed to the plant root system through the drip irrigation pipeline, and the situation that the number of nanometer bubbles is attenuated due to water storage in the pipeline is avoided; and the irrigation effect of the nano bubble water is further improved.

Description

Technical Field

[0001] The invention relates to the field of gas-liquid two-phase flow pipeline mixing, and in particular to a nano bubble water high-frequency irrigation device and method. Background Art

[0002] Nanobubbles generally refer to bubbles with a diameter of less than 1000nm. Compared with traditional large bubbles, nanobubbles are small in size and exist stably in the water in the form of Brownian motion for a long time. A large number of experiments and engineering practices have proved that nanobubbles also have many physiological effects. For example, irrigation with air or oxygen nanobubble water can effectively increase the oxygen content in the soil; irrigation with nitrogen nanobubble water can increase nitrogen absorption by the roots and promote plant growth; irrigation with hydrogen nanobubble water can enhance the disease resistance of crops and reduce the absorption of heavy metals.

[0003] For field irrigation and fruit tree irrigation, the irrigation characteristics are large single irrigation water volume and low irrigation frequency. However, for irrigation of fruits such as cherry tomatoes and blueberries, the irrigation characteristics are small single irrigation water volume and high irrigation frequency. For example, the irrigation frequency of blueberries exceeds 10 times / day, and the irrigation water volume for a single plant each time may be only a few hundred milliliters.

[0004] When using nano bubble water to irrigate the above fruits, since the irrigation equipment is generally installed in the irrigation pump room, and the outlet pipe of the nano bubble irrigation device is long, the amount of water in the pipe is close to or even greater than the amount of water for each irrigation, resulting in the irrigation water that irrigates the plant roots each time being the water stored in the pipe, and the newly prepared nano bubble water can never directly reach the plant roots. Although nano bubbles have a long shelf life, reducing or even avoiding the attenuation of the number of nano bubbles caused by the water stored in the pipe will further improve the irrigation effect of nano bubble water.

[0005] In view of this, the present invention provides a nano bubble water high-frequency irrigation device and method, wherein a return pipeline is arranged at the end of an irrigation pipeline, and the internal pressure of the return pipeline is reduced. When nano bubble water is used for irrigation, the nano bubble water irrigation is preferentially returned to a water storage tank through the return pipeline. When the newly prepared nano bubble water fills the entire irrigation pipeline, the return pipeline is closed, and the newly prepared nano bubble water is transported to the plant root system through the drip irrigation pipeline, thereby avoiding the attenuation of the number of nano bubbles caused by water storage in the pipeline, and further improving the irrigation effect of the nano bubble water. Summary of the invention

[0006] The purpose of the present invention is to provide a nano bubble water high frequency irrigation device and method to solve the problems raised in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A nano bubble water high frequency irrigation device and method, comprising a water tank, a nano bubble generating device, an irrigation pipeline, a branch pipeline, and a terminal drip irrigation pipe, wherein the branch pipeline is also provided with a circulation pipeline;

[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] Among them, the circulation pipeline is connected to the water tank, and a water pump and a solenoid valve are also arranged on the circulation pipeline;

[0011] Furthermore, an automatic exhaust valve is provided on the circulation pipeline;

[0012] Furthermore, a pressure sensor is provided on the circulation pipeline; more preferably, the water pump on the circulation pipeline is a variable frequency water pump, which forms a control loop with the pressure sensor, and ensures the stability of the circulation pipeline pressure by automatically adjusting the water pump frequency.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the device sets a return pipeline at the end of the irrigation pipeline and reduces the internal pressure of the return pipeline. When nano bubble water is used for irrigation, the nano bubble water irrigation preferentially returns to the water storage tank through the return pipeline. When the newly prepared nano bubble water fills the entire irrigation pipeline, the return pipeline is closed, and the newly prepared nano bubble water is transported to the plant root system through the drip irrigation pipeline, thereby avoiding the attenuation of the number of nano bubbles caused by water storage in the pipeline, and further improving the irrigation effect of the nano bubble water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an overall schematic diagram of the present invention.

[0015] The serial numbers in the figure are: 1 is a water tank, 2 is a water supply pump, 3 is a water supply pipeline, 4 is a contact tank, 5 is a hydrogen pipeline, 6 is a hydrogen cylinder, 7 is a fiber membrane tube, 8 is an automatic exhaust valve, 9 is an irrigation pipeline, 10 is a branch pipeline, 11 is a potted blueberry, 12 is a solenoid valve, 13 is a pressure sensor, 14 is an automatic exhaust valve, 15 is a variable frequency circulating water pump, 16 is a terminal drip irrigation pipe, and 17 is a circulating pipeline. DETAILED DESCRIPTION

[0016] 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.

[0017] 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.

[0018] 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.

[0019] See also Figure 1 As shown, an embodiment of a nano bubble water high frequency irrigation device and method provided by the present invention:

[0020] The hydrogen cylinder 6 is connected to the fiber membrane tube 7 through the hydrogen pipeline 5; the water tank is connected to the contact tank 4 through the water supply pipeline 3, and the water supply pipeline 3 is provided with a water supply pump 2; the contact tank 4 is connected to the irrigation pipeline 9 with a length of 10m, a diameter of 50mm, and a water storage capacity of 20L, and the contact pipeline 9 is provided with 8 branch pipelines 10 with a length of 10m, a diameter of 20mm, and a water storage capacity of 3L, and each branch pipeline 10 is also provided with 6 terminal drip irrigation pipes 16 with a length of 30cm, a diameter of 6mm, and a water storage capacity of 8ml, which drip irrigate a total of 48 potted blueberries 11; the ends of the 8 branch pipelines 10 are connected to the circulation pipeline 17, and the circulation pipeline 17 is provided with a solenoid valve 12, a pressure sensor 13, an automatic exhaust valve 14 and a circulation water pump 15, and the circulation pipeline 17 is connected to the water tank 1.

[0021] When hydrogen nano bubble water drip irrigation is performed, the irrigation water in the water tank 1 is pressurized by the water supply pump 2 and enters the contact tank 4 through the water supply pipeline 3 at a flow rate of 20L / min. The pressurized hydrogen in the hydrogen cylinder 6 is connected to the fiber membrane tube 7 through the hydrogen pipeline 5; the hydrogen enters the contact tank 4 through the microporous membrane on the surface of the fiber membrane tube 7, and a large number of hydrogen nano-level bubbles are formed in the irrigation water; at this time, the solenoid valve 12 is opened, and the variable frequency circulation water pump 15 is started. By automatically adjusting the operating frequency, the pressure of the pressure sensor 13 is controlled to be between 0.01-0.03MPa. Since the pipeline resistance of the terminal drip irrigation pipe 16 is about 0.1MPa, the water flow in the irrigation pipeline 9 and the 8-way branch pipeline 10 mainly returns to the water tank 1 through the circulation pipeline 17, and only a very small amount of water flows through the terminal drip irrigation pipe 16 to drip irrigate the blueberry pot 11.

[0022] The irrigation water containing a large amount of hydrogen nanobubbles enters the 8-way branch pipe 10 through the irrigation pipe 9. The automatic exhaust valves 8 and 14 arranged on the irrigation pipe 9 and the circulation pipe 17 are used to discharge the undissolved hydrogen, and then return to the water tank 1 through the circulation pipe 17. After 3 minutes, the amount of prepared hydrogen nanobubble water is about 60L, which exceeds the total amount of water stored in the irrigation pipe 9 and the 8-way branch pipe 10 by 44L, and fully replaces the last prepared hydrogen nanobubble irrigation water originally stored in the irrigation pipe 9 and the 8-way branch pipe 10. At this time, the solenoid valve 12 and the variable frequency circulation water pump 15 are closed, and the irrigation water containing a large amount of hydrogen nanobubbles in the contact tank 4 enters the 8-way branch pipe 10 through the irrigation pipe 9, and then drips the newly prepared hydrogen nanobubble irrigation water for the potted blueberry 11 through the terminal drip irrigation pipe 16. After 5 minutes, when the total amount of drip irrigation water reaches 100L, the water supply pump 2 is turned off, and the hydrogen nanobubble water irrigation is completed.

[0023] One hour later, when a new irrigation with hydrogen nano bubble water is carried out, the above steps are repeated, and the "original" water remaining in the irrigation pipeline 9 and the 8-way branch pipeline 10 is replaced back to the water tank 1.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the device sets a return pipeline at the end of the irrigation pipeline and reduces the internal pressure of the return pipeline. When nano bubble water is used for irrigation, the nano bubble water irrigation preferentially returns to the water storage tank through the return pipeline. When the newly prepared nano bubble water fills the entire irrigation pipeline, the return pipeline is closed, and the newly prepared nano bubble water is transported to the plant root system through the drip irrigation pipeline, thereby avoiding the attenuation of the number of nano bubbles caused by water storage in the pipeline, and further improving the irrigation effect of the nano bubble water.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand 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. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A nano bubble water high frequency irrigation device and method, comprising a water tank, a nano bubble generating device, an irrigation pipeline, a branch pipeline, and a terminal drip irrigation pipe, characterized in that: The branch pipeline is also provided with a circulation pipeline; 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; The circulation pipeline is connected with the water tank, and a water pump and a solenoid valve are also arranged on the circulation pipeline.

2. The nano bubble water high frequency irrigation device and method according to claim 1, characterized in that: An automatic exhaust valve is also provided on the circulation pipeline.

3. The nano bubble water high frequency irrigation device and method according to claim 1, characterized in that: A pressure sensor is also provided on the circulation pipeline; preferably, the water pump on the circulation pipeline is a variable frequency water pump, which forms a control loop with the pressure sensor, and ensures the stability of the circulation pipeline pressure by automatically adjusting the water pump frequency.

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