Electrostatic atomization soilless culture device

Abstract

The utility model discloses an electrostatic atomization soilless culture device which comprises a water storage tank (1), an electrostatic atomization device (4), a water pump (5), a liquid medicine tank (6), a high-voltage power supply device (7), a temperature and humidity sensor (8), a main body (9), a filter screen (10), an electronic controller (11), a magnetic field generating device (13) and a top cover (14). An electrostatic atomization device, a water pump, a liquid medicine box, a high-voltage power supply device, a high-voltage generator and an electronic controller are installed on the top cover, the water pump is connected with the water storage tank and the liquid medicine box through water pipes, a temperature and humidity sensor and a magnetic field generating device are installed in the body, a filter screen is installed on the lower portion in the body, and a plurality of channel openings are formed in the side wall of the body. The device is used for storing plants. The electrostatic atomization technology is used for atomizing liquid into charged tiny liquid drops, absorption of plant rhizomes is promoted, the growth environment needed by plants is detected, water and liquid medicine are provided in time, and the growth efficiency of the plants is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plant soilless cultivation, in particular to a novel electrostatic atomization soilless cultivation device. Background Art

[0002] Agricultural irrigation consumes 70% of the world's fresh water, but about 50-60% of the water is wasted due to leaky irrigation systems and inefficient application methods. Plant atomization soilless cultivation has the advantages of saving water and fertilizer. Atomization cultivation is to suspend plants in a closed or semi-closed environment and spray nutrient-rich aqueous solutions on the drooping roots and lower stems in the form of mist or spray. However, the existing electrostatic atomization soilless cultivation devices still have the problems of complex structure, poor atomization effect, and lack of a complete set of system control for the entire device. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a novel electrostatic atomization soilless cultivation device, which utilizes electrostatic atomization technology to atomize liquid into charged droplets to promote plant root absorption, detect the growth environment required by the plant, provide water and liquid medicine in time, and improve plant growth efficiency; at the same time, it can realize the re-pumping of atomized droplets that are not absorbed into atomization, realize water circulation, and save land resources.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] An electrostatic atomization soilless cultivation device, comprising a water storage tank (1), a water pipe (2), a channel opening (3), an electrostatic atomization device (4), a water pump (5), a liquid medicine tank (6), a high-voltage power supply device (7), a temperature and humidity sensor (8), a main body (9), a filter screen (10), an electronic controller (11), a photovoltaic power generation device (12), a magnetic field generating device (13), and a top cover (14); the main body is box-shaped or cylindrical, the upper end of the main body is provided with a top cover, and the lower end is installed in the water storage tank; the electrostatic atomization device, the water pump, the liquid medicine tank, the high-voltage power supply device, the high-voltage generator, the electric A sub-controller, an electrostatic atomization device is arranged in a main body, the electrostatic atomization device, a high-voltage power supply device, and a water pump are electrically connected to the electronic controller respectively, the high-voltage power supply device comprises a high-voltage generator (71), a first end of the water pump is connected to a water storage tank via a water pipe, and a second end is connected to a liquid medicine tank and / or the electrostatic atomization device via a water pipe, a temperature and humidity sensor is installed in the upper part of the main body, a filter is installed in the lower part of the main body, a magnetic field generating device is installed in the upper and lower parts of the main body, a photovoltaic power generation device is installed on the upper outer wall of the top cover, and a plurality of passage openings are arranged on the side wall of the main body for storing plants.

[0006] Furthermore, the photovoltaic power generation device is connected to a high-voltage power supply device and an electronic controller to provide the voltage required for electrostatic atomization, and the high-voltage power supply device and the electrostatic atomization device are connected inside the system; the temperature and humidity sensor controls the operation switches of the water pump and the high-voltage generator by detecting the temperature and humidity values ​​inside the main body; the main body is made of PVC material, and is provided with a plurality of passage openings for storing plants, and the electrostatic atomization device is arranged at the upper center inside the main body.

[0007] Furthermore, the electrostatic atomization device (4) comprises an annular electrode (41) and an atomization needle (45), wherein the annular electrode is arranged at the periphery of the atomization needle, and the annular electrode is connected to a high-voltage generator (71) via a wire for generating a high-voltage electrostatic field; a plurality of annular electrodes distributed in an array are arranged at the lower end of the electrostatic atomization device, and an atomization needle is arranged at the center of each annular electrode.

[0008] Furthermore, the diameter of the annular electrode (41) is 20 mm, the applied voltage is 5-8 KV, and the needle of the atomizing needle (45) is made of metal with an inner diameter less than or equal to 0.3 mm and is located at the center of the annular electrode; the atomizing needle vertically passes through the annular electrode, and the bottom end of the atomizing needle is substantially parallel to the lower surface of the annular electrode.

[0009] Furthermore, the electronic controller (11) controls the on / off of the water pump (5) and the high-voltage generator (71) according to the monitored temperature and humidity values, that is, when the humidity is too low, the water pump runs fast, pumps a large amount of water, and the high-voltage generator is turned on; otherwise, when the humidity is too high, the water pump runs slow, pumps a small amount of water, and the high-voltage generator is turned off.

[0010] Furthermore, the atomizing needle (45) comprises a first conical hole section (451), a second straight hole section (452), and a third conical hole section (453) which are connected in sequence, the first conical hole section being a downstream outlet end, an auxiliary drainage hole (454) being provided on the first conical hole section, the axis of the auxiliary drainage hole being inclined relative to the axis of the first conical hole section, and the plurality of auxiliary drainage holes being distributed along the circumferential direction.

[0011] Furthermore, the outer peripheral surface of the first conical hole section (451) is provided with a concave-convex portion (455), which is wavy and extends along the axial direction of the entire first conical hole section, and the height / depth of the concave-convex portion gradually increases from upstream to downstream in the flow direction of the liquid medicine.

[0012] Further, the first tapered hole section (451) has an axial length L1, the second straight hole section (452) has an axial length L2, the third tapered hole section (453) has an axial length L3, and L2=(0.2-0.46)L1, L3=(0.5-0.82)L1.

[0013] Furthermore, the first tapered hole section (451) has a first inner hole taper angle a1, the concave-convex portion (455) of the first tapered hole section has an outer peripheral surface taper angle a2, and the third tapered hole section (453) has a third inner hole taper angle a3, and a2=(1.8-2.2)a1, a3=(1.3-1.7)a1.

[0014] The utility model is an electrostatic atomization soilless cultivation device, which has the following beneficial technical effects:

[0015] (1) Electrostatic atomization charges the droplets, spraying nutrient-rich aqueous solution in the form of mist or spray to the drooping roots and lower stems. At the same time, a magnetic field device is added to the device to greatly improve the plant absorption efficiency. The electrostatic atomization needle array and the electrostatic atomization electrode array in the atomization chamber are closely distributed. When the electrostatic atomization device is working, atomization can produce smaller charged liquid particles, and the distribution of the tiny charged particles is more compact and uniform, making them easier to be absorbed by plants.

[0016] (2) The utility model optimizes the design of the atomizing needle, which includes a first conical hole section, a second straight hole section, a third conical hole section, an auxiliary drainage hole, and a concave-convex portion, which can further improve the uniformity, compactness, and atomization effect of liquid atomization.

[0017] (3) The overall structure of the device is simple. The design considers storing the water that cannot be absorbed and realizing water circulation through the water storage tank and water pump. The electronic detection and automatic control effects are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the electrostatic atomization soilless cultivation device of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the electrostatic atomization device of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the atomizing spray needle of the utility model.

[0021] In the figure: a water storage tank 1, a water pipe 2, a channel opening / through hole 3, an electrostatic atomization device 4, a water pump 5, a medicine liquid tank 6, a high-voltage power supply device 7, a high-voltage generator 71, a temperature and humidity sensor 8, a main body 9, a filter 10, an electronic controller 11, a photovoltaic power generation device 12, a magnetic field generating device 13, a top cover 14; an annular electrode 41, an atomizing needle 45, a first conical hole section 451, a second straight hole section 452, a third conical hole section 453, an auxiliary drainage hole 454, and a concave-convex portion 455. DETAILED DESCRIPTION

[0022] In order to make the technical solution and advantages of the utility model clearer, the technical solution of the utility model will be further described in detail in detail with reference to the accompanying drawings. It can be understood that the specific embodiments described here are only partial embodiments of the utility model, which are only used to explain the utility model, not to limit the utility model. It should be noted that for the convenience of description, only the parts / structures related to the utility model are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the utility model and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0023] 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. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present invention should be the common meanings understood by ordinary technicians in the field to which the present invention belongs.

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-3 As shown, an electrostatic atomization soilless cultivation device includes a water storage tank 1, a water pipe 2, a channel opening / through hole 3, an electrostatic atomization device 4, a water pump 5, a liquid medicine tank 6, a high-voltage power supply device 7, a temperature and humidity sensor 8, a main body 9, a filter screen 10, an electronic controller 11, a photovoltaic power generation device 12, a magnetic field generating device 13, and a top cover 14. The main body 9 is box-shaped, tubular or cylindrical. The upper end of the main body 9 has a top cover 14, and the lower end is installed in the water storage tank 1. The electrostatic atomization device 4, the water pump 5, the liquid medicine tank 6, the high-voltage power supply device 7, the high-voltage generator 71, and the electronic controller 11 are installed on / inside the top cover 14. The electrostatic atomization device 4 is arranged on the main body. 9, the electrostatic atomization device 4, the high-voltage power supply device 7, and the water pump 5 are electrically connected to the electronic controller 11 respectively. The high-voltage power supply device 7 includes a high-voltage generator 71. The first end of the water pump 5 is connected to the water storage tank 1 through the water pipe 2, and the second end is connected to the medicine tank 6 and / or the electrostatic atomization device 4 through the water pipe. A temperature and humidity sensor 8 is installed on the upper part of the main body 9, a filter screen 10 is installed on the lower part of the main body 9, a magnetic field generating device 13 is installed on the upper and lower parts of the main body 9, a photovoltaic power generation device 12 is installed on the upper outer wall of the top cover 14, and a plurality of passage openings / through holes 3 are provided on the side wall / vertical wall of the main body 9 for storing plants.

[0026] The photovoltaic power generation device 12 is connected to the high-voltage power supply device 7 and the electronic controller 11, and is used to provide the voltage required for electrostatic atomization. The high-voltage power supply device 7 and the electrostatic atomization device 4 are connected inside the system; the temperature and humidity sensor 8 controls the operation switches of the water pump 5 and the high-voltage generator 71 by detecting the temperature and humidity values ​​inside the main body 9; the main body 9 is made of PVC material, and is provided with a plurality of passage openings / through holes 3 for storing plants, and the electrostatic atomization device 4 is arranged at the upper center inside the main body 9.

[0027] The electrostatic atomization device 4 includes an annular electrode 41 and an atomizing needle 45. The annular electrode 41 is arranged on the periphery of the atomizing needle 45. The annular electrode 41 is connected to the high-voltage generator 71 through a wire to generate a high-voltage electrostatic field. A plurality of array-type annular electrodes 41 (such as 4) are arranged inside / at the lower end of the electrostatic atomization device 4, and an atomizing needle 45 is arranged at the center of each annular electrode 41.

[0028] In order to fully charge the liquid in the atomizing needle 45, the diameter of the annular electrode 41 is designed to be 20 mm, and the applied voltage is 5-8 KV; and the needle head of the atomizing needle 45 is made of metal with an inner diameter less than or equal to 0.3 mm, and is located at the center of the annular electrode 41. The atomizing needle 45 and the annular electrode 41 are densely distributed in the inner / lower end of the electrostatic atomization device 4. The electrostatic atomization device 4 also includes a needle holder, which is fixedly mounted on its top end, and the atomizing needle 45 is mounted on the needle holder. The atomizing needle 45 vertically passes through the annular electrode 41, and the bottom end of the atomizing needle 45 is parallel to the lower surface of the annular electrode 41.

[0029] The water and liquid medicine pumped by the water pump 5 are sprayed out through the atomizing needle 45. The annular electrode 41 uses an anti-oxidation metal wire as the electrode material to provide a stable electrostatic field to improve the electrostatic atomization efficiency. The annular electrode 41 is connected to a high-voltage source to form a high-voltage electrostatic field. The liquid is atomized into fine particles under the action of the electrostatic field, and the surface area of ​​the liquid is increased to accelerate the absorption efficiency of the plant roots and stems. The distance between two adjacent annular electrodes 41 is 5 cm. In order to prevent the atomized droplets from being charged and causing violent discharge to affect the plant absorption efficiency, the annular electrode 41 is connected to an external high-voltage source so that the annular electrode maintains a high-voltage potential. A high-voltage electric field is generated around the annular electrode 41. Under the action of the high-voltage electric field, the liquid ejected from the atomizing needle 45 is atomized into fine particles by the electrostatic attraction and electrostatic repulsion to absorb the heat in the main body 9 to accelerate the temperature and humidity balance, while reducing the energy required for electrostatic atomization. The electronic controller 11 controls the opening and closing of the water pump 5 and the high-voltage generator 71 according to the monitored temperature and humidity. That is, when the humidity is too low, the water pump 5 runs fast, pumps a large amount of water, and the high-voltage generator 71 is turned on. Otherwise, when the humidity is too high, the water pump 5 runs slow, pumps a small amount of water, and the high-voltage generator 71 is turned off.

[0030] like Figure 3As shown, further, in a preferred embodiment, the atomizing needle 45 includes a first conical hole section 451, a second straight hole section 452, and a third conical hole section 453 which are connected in sequence, the first conical hole section 451 is a downstream outlet end, an auxiliary drainage hole 454 is opened on the first conical hole section 451, the axis of the auxiliary drainage hole 454 is inclined relative to the axis of the first conical hole section 451, and a plurality of auxiliary drainage holes 454 are distributed along the circumferential direction, and the auxiliary drainage holes 454 are used to introduce part of the air to mix with the liquid medicine to improve the uniformity, compactness and atomization effect of atomization.

[0031] The outer peripheral surface of the first conical hole section 451 is provided with a concave-convex portion 455, which is wavy and extends along the axial direction of the entire first conical hole section 451. The height / depth of the concave-convex portion 455 gradually increases from upstream to downstream in the flow direction of the liquid medicine. Such a design can further improve the uniformity, compactness and atomization effect of the liquid atomization.

[0032] Further, the first tapered hole section 451 has an axial length L1, the second straight hole section 452 has an axial length L2, and the third tapered hole section 453 has an axial length L3, and L2=(0.28-0.38)L1, L3=(0.6-0.72)L1. The first tapered hole section 451 has a first inner hole taper angle a1, the concave-convex portion 455 of the first tapered hole section 451 has an outer peripheral surface taper angle a2, and the third tapered hole section 453 has a second inner hole taper angle a3, and a2=(1.9-2.1)a1, a3=(1.4-1.6)a1. The utility model can further improve the uniformity, compactness and atomization effect of liquid atomization through the optimized design of the atomizing needle 45.

[0033] The water storage tank 1 is located at the bottom of the device and can be directly filled with water from the outside. It will also collect droplets inside the device that are not absorbed by plant roots due to gravity, and the water is recycled through the water pump 5. The liquid medicine tank 6 is directly connected to the electrostatic atomization device 4 through a hose.

[0034] The device contains a magnetic field generating device 13. Since the droplets after electrostatic atomization are charged, the droplets are affected by the magnetic force in the magnetic field, so that they are suspended for a longer time, and the droplets are fully in contact with the plant roots and stems for absorption.

[0035] The device contains a filter device 10 inside. In order to prevent necrotic roots of plants from falling into the water storage tank 1 during growth, the outer diameter of the filter 10 is the same as the inner hole of the main body 9.

[0036] An electrostatic atomization soilless cultivation device, the working process / working principle of which is as follows:

[0037] The photovoltaic power generation device 12 converts light energy into electrical energy and outputs it to the high-voltage power supply device 7. The electronic controller 11 receives the temperature and humidity signals from the temperature and humidity sensor 8 and turns on the water pump 5 and the high-voltage generator 71. After the high-voltage generator 71 is turned on, an electrostatic field is formed between the ring electrode 41. The water pump 5 extracts liquid from the water storage tank 1 and pumps it to the atomizing needle 45. The liquid under the electric field is atomized into tiny particles, which fall under the action of gravity and are absorbed by the roots and stems of plants. The magnetic field generating device 13 allows the atomized droplets to suspend in the air for a long time. At the same time, the liquid that is not atomized due to the excessive flow rate flows into the water storage tank 1, and is then extracted by the water pump 5 for the next atomization. The particles that are not absorbed by the roots and stems of plants also drip into the water storage tank 1. The electronic controller 11 always detects the temperature and humidity values ​​in the main body 9, and dynamically turns on and off the water pump 5 and the high-voltage generator 71.

[0038] The utility model is an electrostatic atomization soilless cultivation device, which has the following beneficial technical effects:

[0039] (1) Electrostatic atomization charges the droplets, spraying nutrient-rich aqueous solution in the form of mist or spray to the drooping roots and lower stems. At the same time, a magnetic field device is added to the device to greatly improve the plant absorption efficiency. The electrostatic atomization needle array and the electrostatic atomization electrode array in the atomization chamber are closely distributed. When the electrostatic atomization device is working, atomization can produce smaller charged liquid particles, and the distribution of the tiny charged particles is more compact and uniform, making them easier to be absorbed by plants.

[0040] (2) The utility model optimizes the design of the atomizing needle. The atomizing needle 45 includes a first tapered hole section 451, a second straight hole section 452, a third tapered hole section 453, an auxiliary drainage hole 454, and a concave-convex portion 455, which can further improve the uniformity, compactness, and atomization effect of liquid atomization.

[0041] (3) The overall structure of the device is simple. The design considers storing the water that cannot be absorbed and realizing water circulation through the water storage tank and water pump. The electronic detection and automatic control effects are good.

[0042] The above-mentioned implementation mode is an illustration of the present utility model, not a limitation of the present utility model. It can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The protection scope of the present utility model is limited by the attached claims and their equivalents.

Claims

1. An electrostatic atomization soilless cultivation device, comprising a water storage tank (1), a water pipe (2), a channel opening (3), an electrostatic atomization device (4), a water pump (5), a liquid medicine tank (6), a high-voltage power supply device (7), a temperature and humidity sensor (8), a main body (9), a filter (10), an electronic controller (11), a photovoltaic power generation device (12), a magnetic field generating device (13), and a top cover (14), wherein: The main body is box-shaped or cylindrical, with a top cover at the upper end of the main body and a lower end installed in a water storage tank. An electrostatic atomization device, a water pump, a liquid medicine tank, a high-voltage power supply device, a high-voltage generator, and an electronic controller are installed on the top cover. The electrostatic atomization device is arranged in the main body. The electrostatic atomization device, the high-voltage power supply device, and the water pump are electrically connected to the electronic controller respectively. The high-voltage power supply device includes a high-voltage generator (71). The first end of the water pump is connected to the water storage tank through a water pipe, and the second end is connected to the liquid medicine tank and / or the electrostatic atomization device through a water pipe. A temperature and humidity sensor is installed in the upper part of the main body, a filter is installed in the lower part of the main body, and a magnetic field generating device is installed in the upper and lower parts of the main body. A photovoltaic power generation device is installed on the upper outer wall of the top cover. A plurality of passage openings are arranged on the side wall of the main body for storing plants.

2. The electrostatic atomization soilless cultivation device according to claim 1, characterized in that: The photovoltaic power generation device is connected to a high-voltage power supply device and an electronic controller to provide the voltage required for electrostatic atomization. The high-voltage power supply device and the electrostatic atomization device are connected inside the system. The temperature and humidity sensor controls the operation switches of the water pump and the high-voltage generator by detecting the temperature and humidity values ​​inside the main body. The main body is made of PVC material and is provided with a plurality of passage openings for storing plants. The electrostatic atomization device is arranged at the upper center inside the main body.

3. The electrostatic atomization soilless cultivation device according to claim 1, characterized in that: The electrostatic atomization device (4) comprises an annular electrode (41) and an atomization needle (45); the annular electrode is arranged on the periphery of the atomization needle, and the annular electrode is connected to a high-voltage generator (71) via a wire for generating a high-voltage electrostatic field; a plurality of annular electrodes distributed in an array are arranged at the lower end of the electrostatic atomization device, and an atomization needle is arranged at the center of each annular electrode.

4. The electrostatic atomization soilless cultivation device according to claim 3, characterized in that: The diameter of the annular electrode (41) is 20 mm, the applied voltage is 5-8 KV, and the atomizing needle (45) is made of metal with an inner diameter less than or equal to 0.3 mm and is located at the center of the annular electrode; the atomizing needle vertically passes through the annular electrode, and the bottom end of the atomizing needle is parallel to the lower surface of the annular electrode.

5. The electrostatic atomization soilless cultivation device according to claim 4, characterized in that: The electronic controller (11) controls the start and stop of the water pump (5) and the high-voltage generator (71) according to the monitored temperature and humidity values.

6. The electrostatic atomization soilless cultivation device according to claim 3, characterized in that: The atomizing needle (45) comprises a first conical hole section (451), a second straight hole section (452), and a third conical hole section (453) which are connected in sequence, the first conical hole section being a downstream outlet end, an auxiliary drainage hole (454) being provided on the first conical hole section, the axis of the auxiliary drainage hole being arranged obliquely relative to the axis of the first conical hole section, and the plurality of auxiliary drainage holes being distributed along the circumferential direction.

7. The electrostatic atomization soilless cultivation device according to claim 6, characterized in that: The outer peripheral surface of the first conical hole section (451) is provided with a concave-convex portion (455), which is wavy and extends along the axial direction of the entire first conical hole section, and the height / depth of the concave-convex portion gradually increases from upstream to downstream in the flow direction of the liquid medicine.

8. The electrostatic atomization soilless cultivation device according to claim 7, characterized in that: The first tapered hole section (451) has an axial length L1, the second straight hole section (452) has an axial length L2, the third tapered hole section (453) has an axial length L3, and L2=(0.2-0.46)L1, L3=(0.5-0.82)L1.

9. The electrostatic atomization soilless cultivation device according to claim 8, characterized in that: The first tapered hole section (451) has a first inner hole taper angle a1, the concave-convex portion (455) of the first tapered hole section has an outer peripheral surface taper angle a2, and the third tapered hole section (453) has a third inner hole taper angle a3, and a2=(1.8-2.2)a1, a3=(1.3-1.7)a1.

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