Micro-nano bubble generating device for irrigation system

Abstract

The present invention provides a micro-nano bubble generating device for an irrigation system, which includes a pipeline main body. The pipeline main body is a T-shaped pipeline, and the pipeline main body includes a water inlet pipe, a water outlet pipe and a gas supply pipe. The opening end of the water inlet pipe is provided with a water inlet quick connector for facilitating quick installation at the end of a water and fertilizer integrated machine. The inner wall of the water inlet pipe is fixedly connected to a guide plate bracket, and an internal guide plate is fixedly connected to the guide plate bracket. A mixer is arranged at the intersection of the water inlet pipe and the gas supply pipe. Two pistons are slidably arranged in the gas supply pipe, and an air injection cavity is formed between the two pistons.

Description

Technical Field

[0001] The present invention belongs to the field of water treatment devices, and particularly relates to a micro-nano bubble generating device for an irrigation system. Background Art

[0002] Traditional irrigation systems use large-volume water droplets or water flows to supply water and nutrients to crops. However, this method has certain disadvantages, including a large consumption of water resources, waste of fertilizers and other chemicals, and mechanical damage to crops.

[0003] In recent years, irrigation systems using micro-nano bubble technology have received increasing attention. Micro-nano bubbles are composed of bubbles with diameters ranging from 10 micrometers to 1000 micrometers, and they can remain stably suspended in water for more than 30 minutes. Introducing oxygen-rich micro-nano bubbles into irrigation water can not only provide more oxygen to the roots, but also reduce the surface tension of water, improve the water permeability and water retention capacity, thereby reducing the number of irrigation times and water consumption.

[0004] Traditional bubble generating devices usually use a high-pressure air pump to compress gas to a certain pressure, and then inject the gas into water through gas pressure to form micro-nano bubbles. However, this method has problems such as high energy consumption, high noise, and high safety risks. The existing micro-nano bubble generating devices mainly have two types: the mechanical impact method and the ultrasonic method. The mechanical impact method uses the impact between a high-speed rotating rotor and a stator to generate micro-bubbles, but the generated bubble volume distribution is uneven and they are prone to aggregation. The ultrasonic method uses the cavitation effect of ultrasonic waves to generate micro-nano bubbles, which can generate relatively uniform micro-bubbles, but the device structure is complex and the cost is high.

[0005] Therefore, developing a micro-nano bubble generating device that can generate homogeneous micro-bubbles and has a simple structure and low cost brings convenience to the popularization and application of micro-nano bubble irrigation technology, and has become an urgent problem to be solved. Summary of the Invention

[0006] In order to overcome a series of defects existing in the prior art, the purpose of the present invention is to provide a micro-nano bubble generating device for an irrigation system in view of the above problems, including a pipeline main body 2. The pipeline main body 2 is a T-shaped pipeline. The pipeline main body 2 includes a water inlet pipe, a water outlet pipe, and a gas supplement pipe. The opening end of the water inlet pipe is provided with a water inlet quick connector 1 for facilitating quick installation at the end of a water and fertilizer integrated machine. The inner wall of the water inlet pipe is fixedly connected to a flow guide plate support 4, and an internal flow guide plate 3 is fixedly connected to the flow guide plate support 4. A mixer is arranged at the intersection of the water inlet pipe and the gas supplement pipe. Two pistons 18 are slidably arranged in the gas supplement pipe, and an air injection cavity is formed between the two pistons 18.

[0007] Preferably, a water inlet flow channel 5 is formed between the internal guide plates 3. The water inlet flow channel 5 is arranged in a variable cross-section structure to increase the water pressure and flow velocity at the water inlet flow channel 5. The outer wall of the connection part between the water inlet pipe and the gas supply pipe is fixedly connected with a speed regulating motor 7 and a waterproof gasket 10 through a fastening bolt 6. The waterproof gasket 10 is located between the speed regulating motor 7 and the outer wall of the pipeline main body 2. The rotating shaft 8 of the speed regulating motor 7 passes through the waterproof gasket 10 and extends to the side wall of the pipeline main body 2 and is fixedly sleeved with a mixer 9 and a pressurizing turbine 13 in sequence. A bubble generator is arranged below the pressurizing turbine 13.

[0008] Preferably, the axis of the rotating shaft 8 coincides with the axis of the water outlet pipe. The mixer 9 is located in the mixer, and the pressurizing turbine 13 is located in the water outlet pipe. The outer diameter of the pressurizing turbine 13 matches the inner diameter of the water outlet pipe.

[0009] Preferably, a pressure regulating spring 19 is connected between the two pistons 18. The outer wall of the open end of the gas supply pipe is provided with an adjusting thread 21, and the gas supply pipe is threadedly connected with an adjusting end cover 22 through the adjusting thread 21.

[0010] Preferably, an air adding port 16 is arranged on the piston 18 near one end of the water inlet pipe. A conical one-way valve 17 is installed on the air adding port 16, and an air inlet valve 20 is installed on the gas supply pipe. When the pressure regulating spring 19 is released, the conical one-way valve 17 is closed and the air inlet valve 20 is opened, and external gas enters the air adding cavity through the air inlet valve 20; when the pressure regulating spring 19 is compressed, the conical one-way valve 17 is opened and the air inlet valve 20 is closed, and the gas in the air adding cavity flows to the mixer through the conical one-way valve 17.

[0011] Preferably, the middle section of the variable cross-section structure is cylindrical, and both ends of the water inlet flow channel 5 are frustum-shaped, and the cross-sectional radii of the frustum gradually decrease along the water flow direction.

[0012] Preferably, the mixer 9 adopts a grid-shaped mixer, which is used to accelerate the internal shearing action to increase the gas dissolution ability.

[0013] Preferably, the bubble generator includes a bubble generator upper panel 11 and a bubble generator lower panel 12 with the same structure. The bubble generator upper panel 11 is connected to the distal end of the rotating shaft 8 through a coupling 24. The bubble generator lower panel 12 is fixedly connected to the inner wall of the water outlet pipe. Jet ports 23 arranged in the shape of rectangular narrow slits are opened on both the bubble generator upper panel 11 and the bubble generator lower panel 12.

[0014] Preferably, the jet orifices 23 on the upper panel 11 and the lower panel 12 of the bubble generator are provided with the same specifications. When the upper and lower jet orifices 23 coincide during the rotation of the upper panel 11 of the bubble generator, the high-pressure water flow containing gas quickly passes through the jet orifices 23 and is quickly dissolved and broken under the high-speed shearing action and the rapid pressure change action between the upper panel 11 and the lower panel 12 of the bubble generator.

[0015] Preferably, a circular diversion baffle 14 is provided below the lower panel 12 of the bubble generator, and a circular aeration orifice 15 is opened at the center of the circular diversion baffle 14.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) This application does not require the installation of a dedicated high-pressure air pump for air supplementation, and automatic pressurization and air supplementation are achieved by a mechanical device;

[0018] 2) This application drives a pressurizing turbine to rotate by a motor to increase the pressure of the water body and accelerate the dissolution of gas;

[0019] 3) This application sets the jet orifices of the shearing motion of the upper and lower panels of the bubble generator to be periodically opened and closed, so that the pressure inside the cavity periodically increases and decreases, the piston spring compresses and releases, and under the action of the single-phase air valve and the intake valve, external air intermittently enters the mixing cavity and is quickly dissolved under high pressure;

[0020] 4) This application strengthens the dissolution ability by increasing a mixer to further shear and break the high-speed water flow under the action of mechanical force;

[0021] 5) The spring tightness degree of the end cover part in this application can be adjusted to change the internal pressure setting of the mixing cavity;

[0022] 6) The working frequency of the air supplementation device can be adjusted by adjusting the rotation speed of the motor in this application. Description of the Drawings

[0023] Figure 1 It is a cross-sectional view of the overall structure of this application.

[0024] The reference numerals in the drawings are:

[0025] 1 - Inlet quick connector, 2 - Pipeline main body, 3 - Internal flow deflector, 4 - Flow deflector bracket, 5 - Inlet water flow channel, 6 - Fastening bolt, 7 - Speed regulation motor, 8 - Rotating shaft, 9 - Mixer, 10 - Waterproof gasket, 11 - Upper panel of bubble generator, 12 - Lower panel of bubble generator, 13 - Pressurized turbine, 14 - Circular flow deflector baffle, 15 - Aeration port, 16 - Gas injection port, 17 - Conical check valve, 18 - Piston, 19 - Pressure regulating spring, 20 - Intake valve, 21 - Adjusting thread, 22 - Adjusting end cover, 23 - Jet port, 24 - Coupling. Detailed implementation manners

[0026] To make the purposes, technical solutions and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions from beginning to end. The described embodiments are some, but not all, of the embodiments of the present invention.

[0027] All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] The embodiments described below with reference to the accompanying drawings and directional terms are all exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] As Figure 1 shown, the micro-nano bubble generating device of the irrigation system includes a pipeline main body 2. The pipeline main body 2 is a T-shaped pipeline. The pipeline main body 2 includes a water inlet pipe, a water outlet pipe and a gas supplement pipe. The open end of the water inlet pipe is provided with an inlet quick connector 1 for facilitating quick installation with the end of the water and fertilizer integrator. The inner wall of the water inlet pipe is fixedly connected to a flow deflector bracket 4. An internal flow deflector 3 is fixedly connected to the flow deflector bracket 4. A mixer is provided at the intersection of the water inlet pipe and the gas supplement pipe. Two pistons 18 are slidably arranged in the gas supplement pipe, and an air injection cavity is formed between the two pistons 18.

[0030] Preferably, an inlet water flow channel 5 is formed between the internal flow deflectors 3. The inlet water flow channel 5 is set as a variable cross-section structure to increase the water pressure and flow rate at the inlet water flow channel 5. The outer wall of the connection between the water inlet pipe and the gas supplement pipe is fixedly connected with a speed regulation motor 7 and a waterproof gasket 10 through a fastening bolt 6. The waterproof gasket 10 is located between the speed regulation motor 7 and the outer wall of the pipeline main body 2. The rotating shaft 8 of the speed regulation motor 7 passes through the waterproof gasket 10 and extends to the side wall of the pipeline main body 2 and is fixedly sleeved with a mixer 9 and a pressurized turbine 13 in sequence. A bubble generator is arranged below the pressurized turbine 13.

[0031] Preferably, the axis of the rotating shaft 8 coincides with the axis of the water outlet pipe. The mixer 9 is located in the mixer, and the pressurizing turbine 13 is located in the water outlet pipe. The outer diameter of the pressurizing turbine 13 matches the inner diameter of the water outlet pipe.

[0032] Preferably, a pressure regulating spring 19 is connected between the two pistons 18. The outer wall of the open end of the gas supply pipe is provided with an adjusting thread 21, and the gas supply pipe is threadedly connected with an adjusting end cap 22 through the adjusting thread 21.

[0033] Preferably, an air injection port 16 is provided on the piston 18 near the water inlet pipe end. A conical one-way valve 17 is installed on the air injection port 16, and an intake valve 20 is installed on the gas supply pipe. When the pressure regulating spring 19 is released, the conical one-way valve 17 closes and the intake valve 20 opens, and external gas enters the air injection cavity through the intake valve 20; when the pressure regulating spring 19 is compressed, the conical one-way valve 17 opens and the intake valve 20 closes, and the gas in the air injection cavity flows to the mixer through the conical one-way valve 17.

[0034] Preferably, the middle section of the variable cross-section structure is cylindrical, and both ends of the water inlet flow channel 5 are frustum-shaped, and the cross-sectional radius of the frustum gradually decreases along the water flow direction.

[0035] Preferably, the mixer 9 adopts a grid-shaped mixer, which is used to accelerate the internal shearing effect to increase the gas dissolution ability.

[0036] Preferably, the bubble generator includes a bubble generator upper panel 11 and a bubble generator lower panel 12 with the same structure. The bubble generator upper panel 11 is connected to the distal end of the rotating shaft 8 through a coupling 24. The bubble generator lower panel 12 is fixedly connected to the inner wall of the water outlet pipe. Jet ports 23 are provided on both the bubble generator upper panel 11 and the bubble generator lower panel 12 and are arranged as rectangular narrow slits.

[0037] Preferably, the jet ports 23 on the bubble generator upper panel 11 and the bubble generator lower panel 12 are arranged in the same specification. When the upper and lower jet ports 23 coincide during the rotation of the bubble generator upper panel 11, the gas-containing high-pressure water flow quickly passes through the jet ports 23 and is quickly dissolved and broken under the high-speed shearing effect and the rapid pressure change effect of the bubble generator upper panel 11 and the bubble generator lower panel 12.

[0038] Preferably, a circular guide baffle 14 is provided below the bubble generator lower panel 12, and a circular aeration port 15 is provided at the center of the circular guide baffle 14.

[0039] The working process of this embodiment is as follows: Start the speed-regulating motor 7 to drive the mixer 9, the pressurizing turbine 13 and the upper panel 11 of the bubble generator to rotate, and connect the water inlet pipe to the end of the water and fertilizer integrated machine through the quick connector 1;

[0040] The water flow entering from the water inlet pipe is first restricted by the internal guide plate 3, the pressure increases and the flow rate accelerates;

[0041] The water flow is sprayed to the mixer 9 and is disturbed and broken, increasing the gas dissolution ability;

[0042] The pressurizing turbine 13 pressurizes the water body, and the pressurized water flow enters the bubble generator. Due to the mutual movement and shearing action of the upper panel 11 and the lower panel 12 of the bubble generator, the breaking of bubbles is accelerated;

[0043] When the jet ports 23 of the upper panel 11 and the lower panel 12 of the bubble generator are not aligned, the pressure at the mixer 9 increases, causing the piston 18 to be compressed and contracted. At this time, the conical one-way valve 17 opens and the air inlet valve 20 closes. The gas in the air adding cavity is pressurized and enters the mixer, and is accelerated and dissolved in water under the internal high pressure;

[0044] When the jet ports 23 are aligned, the high-pressure water flow quickly shoots out through the jet ports 23, the pressure of the water-vapor mixture suddenly decreases, and the dissolved gas in the water is quickly released to generate a large number of micro-nano bubbles. At the same time, the pressure at the mixer 9 decreases, the pressure regulating spring 19 is released, the conical one-way valve 17 closes, and the air inlet valve 20 opens. External gas enters the air adding cavity through the air inlet valve 20;

[0045] Finally, under the action of the circular guide baffle 14, the high-speed water flow further impacts and breaks to increase the formation efficiency of micro-nano bubbles.

[0046] Finally, it should be pointed out that: The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Micro-nano bubble generating device for irrigation system, including a pipeline main body (2), Characterized in that, The pipeline main body (2) is a T-shaped pipeline. The pipeline main body (2) includes a water inlet pipe, a water outlet pipe and a gas supply pipe. The opening end of the water inlet pipe is provided with a water inlet quick connector (1) for facilitating quick installation with the end of the water and fertilizer integrated machine. A flow guide plate support (4) is fixedly connected to the inner wall of the water inlet pipe. An internal flow guide plate (3) is fixedly connected to the flow guide plate support (4). A mixer is arranged at the intersection of the water inlet pipe and the gas supply pipe. Two pistons (18) are slidably arranged in the gas supply pipe, and an air injection cavity is formed between the two pistons (18); An inlet water flow channel (5) is formed between the internal flow guide plates (3). The inlet water flow channel (5) is set as a variable cross-section structure to increase the water pressure and flow velocity at the inlet water flow channel (5). The outer wall of the connection between the water inlet pipe and the gas supply pipe is fixedly connected with a speed regulating motor (7) and a waterproof gasket (10) through a fastening bolt (6). The waterproof gasket (10) is located between the speed regulating motor (7) and the outer wall of the pipeline main body (2). The rotating shaft (8) of the speed regulating motor (7) passes through the waterproof gasket (10) and extends to the pipeline main body (2) through the side wall of the pipeline main body (2), and is successively fixedly sleeved with a mixer (9) and a pressurizing turbine (13). A bubble generator is arranged below the pressurizing turbine (13); The axis of the rotating shaft (8) coincides with the axis of the water outlet pipe. The mixer (9) is located in the mixer. The pressurizing turbine (13) is located in the water outlet pipe. The outer diameter of the pressurizing turbine (13) matches the inner diameter of the water outlet pipe; The mixer (9) adopts a grid-shaped mixer for accelerating the internal shearing action to increase the gas dissolution ability; The bubble generator includes a bubble generator upper panel (11) and a bubble generator lower panel (12) with the same structure. The bubble generator upper panel (11) is connected to the distal end of the rotating shaft (8) through a coupling (24). The bubble generator lower panel (12) is fixedly connected to the inner wall of the water outlet pipe. Jet ports (23) arranged in the shape of rectangular narrow slits are opened on both the bubble generator upper panel (11) and the bubble generator lower panel (12); The jet ports (23) on the bubble generator upper panel (11) and the bubble generator lower panel (12) are set in the same specification. During the rotation of the bubble generator upper panel (11), when the upper and lower jet ports (23) coincide, the gas-containing high-pressure water flow quickly passes through the jet ports (23), and under the high-speed shearing action and the rapid pressure change action of the bubble generator upper panel (11) and the bubble generator lower panel (12), it is quickly dissolved and broken; A circular flow guide baffle (14) is arranged below the bubble generator lower panel (12). A circular aeration port (15) is opened at the center of the circular flow guide baffle (14); A pressure regulating spring (19) is connected between two pistons (18). An adjusting thread (21) is provided on the outer wall of the open end of the gas supply pipe. The gas supply pipe is threadedly connected with an adjusting end cover (22) through the adjusting thread (21). An air injection port (16) is provided on the piston (18) near the water inlet pipe. A conical one-way valve (17) is installed on the air injection port (16). An intake valve (20) is installed on the gas supply pipe. When the pressure regulating spring (19) is released, the conical one-way valve (17) closes and the intake valve (20) opens, and external gas enters the air injection cavity through the intake valve (20). When the pressure regulating spring (19) is compressed, the conical one-way valve (17) opens and the intake valve (20) closes, and the gas in the air injection cavity flows to the mixer through the conical one-way valve (17).

2. The micro-nano bubble generating device for an irrigation system according to claim 1, characterized in that the middle section of the variable cross-section structure is cylindrical, and both ends of the water inlet flow channel (5) are frustum-shaped, and the cross-sectional radii of the frustum gradually decrease along the water flow direction.

Images