Dual-mode water-air mixing device for agricultural irrigation

Abstract

The application provides a double-mode water-gas mixing device for agricultural irrigation, and belongs to the technical field of agricultural irrigation. The device comprises a U-shaped variable-diameter mixing pipe, a spiral water guide component, a flow splitting assembly, a bubble splitting assembly and a first air feeding assembly. Water flow forms a cyclone through the spiral water guide component and enters a water-gas mixing area inside the U-shaped variable-diameter mixing pipe. The flow splitting impeller can automatically rotate, synchronously driving the first air feeding assembly to pulse air injection towards the small-diameter end of the U-shaped variable-diameter mixing pipe. The bubble splitting net is reciprocatingly rotated within a certain range through gear and rack transmission. The water-gas mixture is evenly thrown towards the partition hole by the flow splitting impeller and is sheared into micro-bubbles by the moving bubble splitting net. The water-gas mixing device innovatively realizes the collaborative linkage of automatic air injection, flow splitting and dynamic fine splitting under single driving, effectively generating irrigation water rich in micro-bubbles. The control system can be used to control the rotation speed of the flow splitting impeller, linearly adjust the air injection and splitting frequency, and realize precise control of the water-gas mixing effect.

Description

Technical Field

[0001] This invention relates to the field of agricultural irrigation technology, and in particular to a dual-mode water-air mixing device for agricultural irrigation. Background Technology

[0002] In modern agricultural irrigation, dissolving air in the form of microbubbles into irrigation water (i.e., micro-nano bubble water irrigation) has been proven to significantly promote crop root development, improve nutrient absorption efficiency, and improve the soil micro-ecological environment.

[0003] Currently, the common device for achieving water-air mixing is the Venturi mixer, which automatically draws in air by relying on the negative pressure generated when water flows through the throat, offering the advantage of simple structure. However, this technology has inherent drawbacks: First, it relies entirely on the negative pressure generated by the water flow to draw in external air, and the air-water mixing ratio is strictly locked by the water flow velocity, making independent adjustment impossible. When the irrigation system adjusts the flow rate due to changes in water demand, the air-water ratio fluctuates, making it difficult to maintain the optimal and stable dissolved air state required by crops. Second, the negative pressure air intake and mixing efficiency of the Venturi tube is limited, especially under low water pressure or fluctuating flow conditions, resulting in insufficient air intake and the generation of large bubbles, uneven mixing, and difficulty in generating high-quality, persistent micro-nano bubbles. Furthermore, its single passive operation mode cannot adapt to the application scenarios of special crops with high dissolved oxygen requirements. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-mode water-air mixing device for agricultural irrigation, aiming to solve the technical bottlenecks existing in the application of venturi-type water-air mixing devices in agricultural irrigation. Its core innovation lies in using a single driving force to simultaneously drive the rotation of the distributor impeller, the pulsed air supply of the first aeration component, and the reciprocating motion of the bubble segmentation network, achieving full automation from aeration to microbubble formation. Crucially, by adjusting the speed of the distributor impeller through an external control system, the aeration frequency and bubble segmentation intensity can be linearly and precisely controlled. This fundamentally breaks the constraint of the non-adjustable air-water ratio in traditional devices, achieving precise control of the mixing effect according to crop needs, and providing crops with higher quality microbubble irrigation water with wider adaptability to various operating conditions.

[0005] The objective of this invention is achieved through the following technical solution: a dual-mode water-air mixing device for agricultural irrigation, comprising a U-shaped mixing pipeline section, a spiral water guiding component diversion assembly, a bubble segmentation assembly, and a first aeration assembly. The U-shaped mixing pipeline section includes a U-shaped variable diameter mixing pipe, the diversion assembly includes an outer cylinder, an inner cylinder, and a dividing hole, the bubble segmentation assembly includes an arc-shaped sleeve and a reciprocating gear, and the first aeration assembly includes a corner connecting seat.

[0006] The spiral water guiding component extends into the interior of the U-shaped variable diameter mixing pipe from the large diameter end;

[0007] The double-layer cavity structure composed of the outer cylinder and the inner cylinder is fixed to one side of the outer wall of the small diameter end of the U-shaped variable diameter mixing pipe, and the inner cavity of the inner cylinder is connected to the inner cavity of the U-shaped variable diameter mixing pipe. The inner cavity of the inner cylinder is equipped with an automatically rotating diverter impeller, and the partition holes are evenly opened in the upper side wall of the inner cylinder.

[0008] A hollow shaft is screwed to the middle of one side of the outer cylinder body. A bubble dividing mesh is fixed to the inner side of the hollow shaft, and the edges of the inner and outer arc surfaces of the bubble dividing mesh are slidably connected to the cavity between the inner and outer cylinder bodies through an arc sleeve.

[0009] The small diameter end of the U-shaped variable diameter mixing pipe is connected to an L-shaped air injection pipe. A piston is slidably inserted into the outer end of the L-shaped air injection pipe. The corner connector is fixed to the outer end of the piston and slides against the outer side of the outer cylinder body. The shaft of the split impeller is fixed to the outer shaft end after passing through the center of the hollow shaft. The eccentric end of the cam is rolled in the body of the corner connector, allowing the piston to supply air to the inner cavity of the U-shaped variable diameter mixing pipe in only one direction. A reciprocating rack is fixed to one side of the corner connector. The reciprocating gear is fixed to the outer shaft end of the hollow shaft and meshes with the reciprocating rack.

[0010] The process of using the technical solution of the present invention is as follows:

[0011] The water source for aeration can enter from the large diameter end of the U-shaped reducing mixing pipe and flow out from the outlet on the top wall of the outer cylinder;

[0012] Due to the presence of the spiral water guiding component, the water source can enter the interior of the U-shaped variable diameter mixing pipe through a spiral path and flow towards the inner cylinder.

[0013] As the distributor impeller rotates automatically, it drives the cam to rotate, causing the eccentric end of the cam to form a rolling connection with the corner connecting seat, which in turn drives the corner connecting seat and the piston to reciprocate linearly within a certain range.

[0014] The L-shaped air injection pipe is equipped with a one-way air inlet mechanism and a one-way air outlet mechanism, which only allows the air supply operation formed by the piston movement to supply air to the inner cavity of the U-shaped variable diameter mixing pipe in one direction, forming a synchronous conventional air addition operation to the inner cavity of the U-shaped variable diameter mixing pipe as the distributor impeller rotates automatically.

[0015] When the distributor impeller rotates automatically in the same direction, the water-air mixture that enters the inner cylinder cavity from the U-shaped variable diameter mixing pipe can continuously enter different cavities of the distributor impeller and be evenly thrown out into each set of partition holes by the distributor impeller.

[0016] The water-air mixture ejected through each set of separating holes is divided by the micropores of the bubble separator, forming tiny water bubbles containing gas. When the corner connecting seat moves back and forth in a certain range, it can also drive the reciprocating rack to form a reciprocating linear motion. The reciprocating rack and reciprocating gear form a transmission that drives the hollow shaft to form a reciprocating rotational motion. The hollow shaft drives the bubble separator to rotate back and forth within a certain range, so that the water-air mixture ejected through each set of separating holes can come into contact with the bubble separator in motion, thereby improving the separation efficiency of the bubble separator for the water-air mixture.

[0017] Water containing microbubbles, separated by a bubble separator, is supplied externally to irrigate agricultural crops. The speed of the splitting impeller can be controlled by an external control system, making the speed of the splitting impeller linearly proportional to the reciprocating linear movement frequency of the piston and the reciprocating rotation frequency of the bubble separator. By simply adjusting the speed parameter of the splitting impeller, the amount of gas supplied and the splitting intensity of the bubbles can be controlled linearly and synchronously, achieving precise and simple adjustment.

[0018] By adopting the above technical solution, the present invention can achieve the following beneficial effects:

[0019] (1) The U-shaped variable diameter mixing pipe, combined with its internal spiral water guiding component, can guide the water flow to form a stable spiral flow state before entering the water-air mixing zone. On the one hand, the centrifugal effect helps to ensure the uniformity of subsequent mixing. On the other hand, the spiral-propelled water flow can pass smoothly through the variable diameter pipe and the flow velocity increases when it reaches the small diameter end, creating ideal hydraulic conditions for the gas to be injected to be rapidly sheared and entrained.

[0020] (2) The first gas filling component injects gas into the small diameter end of the U-shaped variable diameter mixing pipe through the L-shaped gas injection pipe. Due to the small cross-sectional area of ​​the pipe and the fast water flow here, the injected gas can be strongly sheared and broken, so as to achieve preliminary and efficient mixing of water and gas.

[0021] (3) The continuous rotation of the diverter impeller can evenly throw the initially mixed water-air mixture into the upper part of the inner cylinder into the various sets of dividing holes. This not only disperses the water-air mixture into multiple fine streams, but also forms an impact force that comes into contact with the bubble dividing net, thereby improving the dividing efficiency of the bubble dividing net. When the water-air mixture is sprayed onto the moving bubble dividing net, the micropores evenly distributed on the bubble dividing net can dynamically and efficiently shear and divide the bubbles. This can prevent the micropores from clogging and also improve the generation rate and uniformity of microbubbles by increasing relative motion.

[0022] (4) In summary, the present invention utilizes its ingenious power transmission design and the rotation of the diversion impeller to directly complete the dispersion of the fluid on the one hand, and to achieve synchronous and automatic pulsed air supply by driving the first air supply component through the cam on the other hand. At the same time, it also drives the reciprocating rotation of the bubble dividing net through the reciprocating rack and reciprocating gear, realizing the full automation of the process from the pre-adjustment, air injection, preliminary mixing to the final microbubble formation of the water source to be aerated entering the inner cavity of the U-shaped variable diameter mixing pipe. The structure is compact and can stably produce irrigation water rich in microbubbles. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the main irrigation pipeline section and the U-shaped hybrid pipeline section of the present invention;

[0026] Figure 3 This is a schematic diagram of the connection between the spiral water guiding component, the diversion component, the main irrigation pipeline section, and the U-shaped mixing pipeline section of the present invention.

[0027] Figure 4 This is a front view of the outer cylinder and inner cylinder of the present invention;

[0028] Figure 5 This is a schematic diagram of the inner cylinder portion of the present invention;

[0029] Figure 6 This is an exploded structural diagram of the flow divider impeller of the present invention;

[0030] Figure 7 This is a cross-sectional schematic diagram of the inner cylinder portion of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of the bubble segmentation component of the present invention;

[0032] Figure 9 This is a schematic diagram of the bubble segmentation mesh portion of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the first gas filling component of the present invention from a first perspective;

[0034] Figure 11This is a schematic diagram of the first gas filling component of the present invention from a second perspective;

[0035] Figure 12 This is a schematic diagram of the transmission structure of the reciprocating rack part of the present invention;

[0036] Figure 13 This is a schematic diagram of the structure of the second gas filling component of the present invention;

[0037] Figure 14 This is a schematic diagram of the driving structure of the adjusting sealing seat part of the present invention;

[0038] Figure 15 This is a schematic diagram of the structure for adjusting the outlet position of the sealing seat and the air guide spiral blade of the present invention;

[0039] Figure 16 This is a schematic diagram of the irregularly shaped sealing sleeve portion of the present invention.

[0040] Figure label:

[0041] 1. Main irrigation pipeline section; 101. Irrigation main pipe; 102. Main pipeline valve;

[0042] 2. U-shaped mixing pipeline section; 201. Water inlet connector; 202. U-shaped reducing mixing pipe; 203. Base frame; 204. Water inlet valve;

[0043] 3. Spiral water guiding component; 301. Water guiding center pipe; 302. Spiral water guiding blades;

[0044] 4. Diverter assembly; 401. Outer cylinder; 402. Outlet chamber; 403. Outlet connector; 404. Outlet valve; 405. Oxygen monitor; 406. Inner cylinder; 407. Connecting seat; 408. Separation hole; 409. Opposite side cover plate; 410. U-shaped connector; 411. Inlet hole; 412. Diverter impeller; 413. Inner rotating seat; 414. Brush assembly; 415. Side cover plate; 416. Diverter bevel gear; 417. Drive motor; 418. Drive bevel gear;

[0045] 5. Bubble dividing assembly; 501. Reciprocating rotary seat; 502. Hollow shaft; 503. Reciprocating frame; 504. Bubble dividing mesh; 505. Arc sleeve; 506. Inner rubber seat; 507. Reciprocating rack; 508. Reciprocating gear;

[0046] 6. First gas filling assembly; 601. L-shaped gas injection pipe; 602. One-way gas outlet valve; 603. Gas inlet pipe; 604. One-way gas inlet valve; 605. Piston; 606. Piston rod; 607. Corner connecting seat; 608. Guide slide seat; 609. Guide slide column; 610. Cam; 611. Eccentric roller; 612. Rolling groove;

[0047] 7. Second gas filling assembly; 701. Transfer pipe; 702. Variable diameter gas pipe; 703. Gas guide center pipe; 704. Gas guide spiral blades; 705. Sealing column; 706. Top seat; 707. External gas inlet pipe; 708. Pneumatic valve; 709. Top cover; 710. Double sealing seat; 711. Adjusting long shaft; 712. Adjusting gear; 713. Adjusting motor; 714. Adjusting drive gear; 715. Bottom sealing sleeve; 716. Adjusting sealing seat; 717. Irregularly shaped sealing sleeve; 718. Relief groove; 719. Sliding bevel. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] like Figures 1-16 As shown, a dual-mode water-air mixing device for agricultural irrigation includes a U-shaped mixing pipeline section 2 comprising a U-shaped variable diameter mixing pipe 202, a diversion component 4 comprising an outer cylinder 401, an inner cylinder 406 and a dividing hole 408, a bubble dividing component 5 comprising an arc-shaped sleeve 505 and a reciprocating gear 508, and a first air filling component 6 comprising a corner connecting seat 607.

[0051] In the U-shaped mixing pipeline section 2, the large diameter end of the U-shaped variable diameter mixing pipe 202 is the water inlet end, and the small diameter end is the air inlet end. The spiral water guiding component 3 extends into the interior of the U-shaped variable diameter mixing pipe 202 from the large diameter end, and the outer ring changes with the diameter of the U-shaped variable diameter mixing pipe 202.

[0052] The double-layer cavity structure composed of the outer cylinder 401 and the inner cylinder 406 is fixed to one side of the outer wall of the small diameter end of the U-shaped variable diameter mixing pipe 202, and the inner cavity of the inner cylinder 406 is connected to the inner cavity of the U-shaped variable diameter mixing pipe 202. The inner cavity of the inner cylinder 406 is provided with an automatically rotating diverter impeller 412, and the partition holes 408 are evenly opened in the upper side wall of the inner cylinder 406.

[0053] A hollow shaft 502 is screwed to the middle of one side of the main body of the outer cylinder 401. A bubble dividing mesh 504 is fixed to the inner side of the hollow shaft 502. The edges of the inner and outer arc surfaces of the bubble dividing mesh 504 are slidably connected to the cavity between the inner cylinder 406 and the outer cylinder 401 through the arc sleeve 505. Within the reciprocating rotation range of the bubble dividing mesh 504, the dividing hole 408 is always covered therein. The cavity between the outer cylinder 401 and the inner cylinder 406 can provide sufficient space for the bubble dividing mesh 504.

[0054] The small diameter end of the U-shaped variable diameter mixing pipe 202 is connected to an L-shaped air injection pipe 601. A piston 605 is slidably inserted into the outer end of the L-shaped air injection pipe 601. An angle connecting seat 607 is fixed to the outer end of the piston 605 and slidably connected to the outer side of the main body of the outer cylinder 401. A cam 610 is fixed to the outer shaft end of the split impeller 412 after passing through the center of the hollow shaft 502. The split impeller 412 is coaxial with the hollow shaft 502. The eccentric end of the cam 610 is rolled in the main body of the angle connecting seat 607, allowing the piston 605 to supply air to the inner cavity of the U-shaped variable diameter mixing pipe 202 in one direction only. A reciprocating rack 507 is fixed to one side of the angle connecting seat 607. A reciprocating gear 508 is fixed to the outer shaft end of the hollow shaft 502 and meshes with the reciprocating rack 507.

[0055] The working principle is as follows:

[0056] The water source for aeration can enter from the large diameter end of the U-shaped variable diameter mixing pipe 202 and flow out from the outlet on the top wall of the outer cylinder 401. The flow rate of the water source is measured in m³ / h.

[0057] Due to the presence of the spiral water guiding component 3, water can enter the interior of the U-shaped variable diameter mixing pipe 202 in a spiral path and flow towards the inner cylinder 406;

[0058] As the diverter impeller 412 rotates automatically, it drives the cam 610 to rotate, so that the eccentric end of the cam 610 forms a rolling connection with the corner connecting seat 607, driving the corner connecting seat 607 and the piston 605 to reciprocate linearly within a certain range.

[0059] The L-shaped air injection pipe 601 is equipped with a one-way air inlet mechanism and a one-way air outlet mechanism, which only allows the air supply operation formed by the piston 605 to supply air to the inner cavity of the U-shaped variable diameter mixing pipe 202 in a one-way manner, forming a synchronous conventional air addition operation to the inner cavity of the U-shaped variable diameter mixing pipe 202 as the split impeller 412 rotates automatically.

[0060] When the diverter impeller 412 rotates automatically in the same direction, the water-air mixture that enters the inner cavity of the inner cylinder 406 from the U-shaped variable diameter mixing pipe 202 can continuously enter different cavities of the diverter impeller 412 and be evenly thrown out by the diverter impeller 412 into each set of separation holes 408, thereby achieving the purpose of dispersing the water-air mixture.

[0061] The micropores of the bubble separator 504 have a diameter of 50-100μm. The water-air mixture ejected through the separation holes 408 will be separated into microbubbles with a diameter of less than 100μm by the micropores of the bubble separator 504. When the corner connecting seat 607 moves back and forth in a certain range, it can also drive the reciprocating rack 507 to form a reciprocating linear motion. The reciprocating rack 507 and the reciprocating gear 508 form a transmission to drive the hollow shaft 502 to form a reciprocating rotational motion. The hollow shaft 502 drives the bubble separator 504 to rotate back and forth in a certain range, so that the water-air mixture ejected through the separation holes 408 can come into contact with the bubble separator 504 in motion, thereby improving the separation efficiency of the bubble separator 504 for the water-air mixture.

[0062] Furthermore, the rotational movements of the flow divider impeller 412 and the hollow shaft 502 will not interfere with each other;

[0063] Water containing microbubbles, separated by the bubble separator 504, is supplied to irrigate agricultural crops. In this mode, there is no need to actively supply air into the U-shaped variable diameter mixing pipe 202, which can form a highly efficient water-air mixing operation in the conventional mode, meeting the daily irrigation needs of crops. The air supply rate is calculated in L / min.

[0064] The water source has sufficient pressure to enter the inner cavity of the U-shaped variable diameter mixing pipe 202. This pressure ensures that the water flow overcomes the resistance along the way generated by the U-shaped variable diameter mixing pipe 202 and the spiral water guiding component 3, enters the inner cylinder 406, and is output with a stable flow rate. The aeration action formed by the first aeration component 6 will not increase the resistance of the water flow. On the contrary, it can take advantage of the relatively high flow velocity at the small diameter end of the U-shaped variable diameter mixing pipe 202 to achieve a stronger shearing effect and more effectively break and mix the injected gas.

[0065] The specific structures of the main irrigation pipeline section 1, the U-shaped mixing pipeline section 2, the spiral water guiding component 3, and the diversion assembly 4 are as follows: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the large-diameter end of the U-shaped variable diameter mixing pipe 202 is connected to the water inlet pipe 201, the water inlet valve 204 is installed in the water inlet pipe 201 and connected to the external control system, the outer bottom of the U-shaped variable diameter mixing pipe 202 is fixedly connected to the base frame 203, and the device is fixedly connected to the mounting surface through the base frame 203.

[0066] The spiral guide vane 302 is spirally wound around the outside of the water guide center pipe 301, and the outer side of the spiral guide vane 302 is fixed to the inner wall of the U-shaped variable diameter mixing pipe 202. Water is only allowed to flow along the guide of the spiral guide vane 302 between the outside of the water guide center pipe 301 and the inner wall of the U-shaped variable diameter mixing pipe 202, and no leakage will occur from other positions.

[0067] The outer wall of the inner cylinder 406 is fixed to one side of the outer wall of the small diameter end of the U-shaped variable diameter mixing pipe 202 through the connecting seat 407. The top wall of the outer cylinder 401 is connected to the water outlet chamber 402. The outlet position of the water outlet chamber 402 is connected to the water outlet pipe 403. The water outlet valve 404 and the oxygen content monitor 405 are installed in the water outlet pipe 403 and are uniformly connected to the external control system.

[0068] The oxygen content monitor 405 is used to monitor the oxygen consumption of the effluent after aeration in real time and feed the monitoring data back to the external control system for automatic control of the aeration rate.

[0069] The opposing side cover plate 409 and the side cover plate 415 are respectively covered on both sides of the double-layer cavity structure formed by the outer cylinder 401 and the inner cylinder 406. The inlet hole 411 is opened in the main body of the opposing side cover plate 409. The U-shaped pipe 410 is connected between the inner cavity of the small diameter end of the U-shaped variable diameter mixing pipe 202 and the inlet hole 411, which can form a flow channel for water to flow from the U-shaped variable diameter mixing pipe 202 to the inside of the inner cylinder 406.

[0070] An inner rotating seat 413 is fixedly installed on the bottom surface of the inner cavity of the inner cylinder 406. One end of the shaft of the diverter impeller 412 is screwed to the inner rotating seat 413, and the other end is screwed to the middle of the opposite side cover plate 409.

[0071] One end of the shaft of the diverter impeller 412 passes through the center of the hollow shaft 502 and is fixedly connected to the diverter bevel gear 416. A drive motor 417 is fixedly installed on one side of the base frame 203. A drive bevel gear 418 is inserted and fixed in the shaft of the drive motor 417, and the drive bevel gear 418 meshes with the diverter bevel gear 416.

[0072] After the drive motor 417 is started by the external control system, it can drive the drive bevel gear 418 and the flow splitting bevel gear 416 to form a transmission, so that the flow splitting impeller 412 rotates continuously in the same direction, and its speed is measured in rpm.

[0073] Furthermore, the speed of the drive motor 417 can be controlled by an external control system to control the speed of the split impeller 412, so that the speed of the split impeller 412 is linearly proportional to the reciprocating linear movement frequency of the piston 605 and the reciprocating rotation frequency of the bubble dividing screen 504. By simply adjusting the speed parameter of the split impeller 412, the gas supply (operating frequency of the piston 605) and the bubble dividing intensity (operating frequency of the bubble dividing screen 504) can be controlled linearly and synchronously, achieving precise and simple adjustment.

[0074] The bristle assembly 414 is fixedly connected to the top wall of the inner cylinder 406 and located between adjacent dividing holes 408. It contacts and rubs against the inner surface of the bubble dividing screen 504, which not only enables continuous cleaning of the bubble dividing screen 504 and eliminates the clogging of the bubble dividing screen 504 by impurities such as suspended particles, algae, and microbial films contained in the irrigation water, but also provides a micro-cutting and shearing effect by utilizing the physical disturbance of the bristle assembly 414 itself. When larger bubbles are diverted and thrown out and impact the bristles, they can be pre-broken into smaller bubbles, and then further refined by the bubble dividing screen 504. This reduces the initial load on the bubble dividing screen 504 to a certain extent and helps to improve the efficiency of the bubble dividing screen 504.

[0075] The inlet end of the inlet pipe 201 and the outlet end of the outlet pipe 403 are both connected to the irrigation main pipe 101. The main valve 102 is installed in the irrigation main pipe 101 and connected to the external control system, and is located between the inlet pipe 201 and the outlet pipe 403.

[0076] The water flow direction of irrigation main pipe 101 is as follows Figure 1 In the direction indicated by the arrow, during regular irrigation, close the inlet valve 204 and the outlet valve 404, and open the main valve 102. During aerated irrigation, close the main valve 102, and open the inlet valve 204 and the outlet valve 404.

[0077] The specific structures of the bubble segmentation component 5 and the first gas filling component 6 are as follows: Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, the reciprocating frame 503 is fixedly connected between the inner end of the hollow shaft 502 and the bubble dividing mesh 504, and a space is provided between the side cover plate 415 and the inner cylinder 406 to allow the reciprocating frame 503 to rotate back and forth with the hollow shaft 502.

[0078] The reciprocating rotary seat 501 is fixedly installed in the middle of the side cover plate 415. The hollow shaft 502 is screwed to the reciprocating rotary seat 501. An inner rubber seat 506 is fixedly installed in the inner hole of the hollow shaft 502. The shaft of the diverter impeller 412 is screwed into the inner rubber seat 506, which can form mutual buffering isolation and protection between the rotation of the diverter impeller 412 shaft and the rotation of the hollow shaft 502.

[0079] Since the inner and outer arc surfaces of the bubble dividing mesh 504 are fixedly connected with arc sleeves 505, the elastic compression contact formed by the arc sleeves 505 and the inner wall of the outer cylinder 401 and the outer wall of the inner cylinder 406 can prevent the water source thrown out through each set of dividing holes 408 and the water source divided by the bubble dividing mesh 504 from leaking to positions other than the water outlet chamber 402.

[0080] One-way air outlet valve 602 is fixedly installed at the outlet position of L-shaped air injection pipe 601. The bottom wall of L-shaped air injection pipe 601 is connected to air inlet pipe 603. One-way air inlet valve 604 is installed at the inlet position of air inlet pipe 603, which can realize the one-way flow of gas from the external environment to U-shaped variable diameter mixing pipe 202 under the action of piston 605.

[0081] A piston rod 606 is fixedly connected to the top of the piston 605. The other end of the piston rod 606 is fixedly connected to the corner connecting seat 607. A guide slide seat 608 is fixedly connected to the outer side of the side cover plate 415. A guide slide post 609 is fixedly connected to the inner end of the corner connecting seat 607. The guide slide post 609 is slidably connected to the guide slide seat 608. A reciprocating rack 507 is fixedly connected to one side of the guide slide post 609. A rolling groove 612 is provided in the main body of the corner connecting seat 607. An eccentric roller is screwed to the eccentric end of the cam 610. The eccentric roller 611 is rolled in the rolling groove 612. When the cam 610 rotates with the flow divider impeller 412, the rolling connection formed by the eccentric roller 611 and the rolling groove 612, together with the sliding connection formed by the piston 605 and the L-shaped air injection pipe 601, and the sliding connection formed by the guide column 609 and the guide seat 608, can drive the piston column 606, the corner connecting seat 607 and the guide column 609 to form a safe and stable reciprocating linear movement of the component.

[0082] When the first gas filling component 6 cannot meet the gas filling demand, gas can be actively added into the U-shaped variable diameter mixing pipe 202. The specific structure of the second gas filling component 7 is as follows: Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown, when the second gas filling component 7 is used for gas filling, the pressure of the gas itself is sufficient to prevent water from flowing into the second gas filling component 7, and only allows the gas to flow unidirectionally from the second gas filling component 7 into the U-shaped variable diameter mixing pipe 202.

[0083] The transfer connector 701 is connected between the small diameter end of the U-shaped variable diameter mixing tube 202 and the variable diameter air tube 702. The main body of the transfer connector 701 is a cylindrical cavity structure that matches the small diameter end of the U-shaped variable diameter mixing tube 202. The variable diameter air tube 702 is a conical cavity structure that narrows towards the transfer connector 701. Its function is the same as the variable diameter setting of the U-shaped variable diameter mixing tube 202, which is to increase the flow rate of the fluid at the small end.

[0084] A guide spiral blade 704 is wound around the outside of the gas guide center tube 703. The outer side of the guide spiral blade 704 is fixedly connected to the inner wall of the variable diameter gas tube 702 and the transfer tube 701. A sealing column 705 is fixedly connected between the spiral surfaces of the outlet of the guide spiral blade 704. This is used to guide the gas flowing out of the variable diameter gas tube 702 along the outer wall of the small diameter end of the U-shaped variable diameter mixing tube 202, thereby improving the smoothness of the gas flow from the variable diameter gas tube 702 and the transfer tube 701 to the U-shaped variable diameter mixing tube 202. Figure 15 The arrows indicate the direction of gas flow along the guide spiral blades 704 and the sealing column 705;

[0085] An external air inlet pipe 707 is connected to one side of the top wall of the variable diameter air pipe 702. A pneumatic valve 708 is installed in the external air inlet pipe 707 and connected to an external control system. An automatic air filling device is also provided in the external control system. The inlet of the pneumatic valve 708 is connected to the automatic air filling device, which can realize the automatic air filling operation into the variable diameter air pipe 702.

[0086] An adjusting long shaft 711 is screwed into the inner hole of the air guide center tube 703. An adjusting seal 716 is fixedly connected to the bottom end of the adjusting long shaft 711. A bottom sealing sleeve 715 is fixedly installed at the bottom opening of the air guide center tube 703. The bottom end of the adjusting long shaft 711 is screwed to the bottom sealing sleeve 715.

[0087] A top seat 706 is attached to the top opening of the variable diameter air tube 702. The top seat 706 forms a seal on the inner cavity of the variable diameter air tube 702 and the top end of the adjusting long shaft 711 through a double sealing seat 710. After the top seal of the adjusting long shaft 711 is unscrewed from the double sealing seat 710, it is fixedly connected to the adjusting gear 712. An adjusting motor 713 is fixedly installed on the outer top end of the top seat 706. An adjusting drive gear 714 is inserted and fixed in the rotating shaft of the adjusting motor 713. The adjusting drive gear 714 meshes with the adjusting gear 712. A top cover 709 is attached to the top end of the top seat 706 to form protection for the adjusting motor 713 and other components.

[0088] The adjustment motor 713 is started by an external control system, which drives the adjustment drive gear 714 to cooperate with the adjustment gear 712 to form a transmission. The adjustment gear 712 can drive the adjustment long shaft 711 and the adjustment seal 716 to rotate with high precision within a certain angle range.

[0089] A clearance groove 718 is provided on one side of the bottom of the sealing column 705. A special-shaped sealing sleeve 717 is fixed to one end of the adjusting sealing seat 716. The component composed of the adjusting sealing seat 716 and the special-shaped sealing sleeve 717 can not only completely seal the outlet position formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701, but also adjust the size of the outlet formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701.

[0090] When the adjusting seal 716 is rotated to the position where the irregular sealing sleeve 717 is completely aligned with the outlet position formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701, the elastic compression of the irregular sealing sleeve 717 itself is sufficient to form a sealing effect.

[0091] When the side of the adjusting seat 716 away from the irregular sealing sleeve 717 is adjacent to the outlet position formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701, the rotational change of the side of the adjusting seat 716 away from the irregular sealing sleeve 717 relative to the outlet position formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701 can adjust the size of the obstruction contour of the outlet position formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701.

[0092] With the automatic adjustment of the pneumatic valve 708, the air volume can be adjusted at both the inlet and outlet ends of the air guide spiral blade 704. The pneumatic valve 708 is used to control the total inlet pressure and flow rate. The adjustment of the side of the sealing seat 716 away from the irregular sealing sleeve 717 affects the size of the outlet position blocking profile formed by the air guide spiral blade 704 and the sealing column 705 on the inner wall of the transfer pipe 701, which is used to adjust the flow state of the gas flowing out of the air guide central pipe 703.

[0093] Furthermore, a sliding bevel 719 is provided at the lower corner of the sealing post 705, which facilitates the opening and closing action of the irregular sealing sleeve 717 within its own elastic range as the adjusting sealing seat 716 rotates.

[0094] The spiral direction of the air guide spiral blade 704 is opposite to that of the spiral water guide blade 302. Its core purpose is to use the reverse swirling flow to greatly enhance the shearing effect between the gas and water phases.

[0095] The second gas filling component 7 and the first gas filling component 6 are not substitutes for each other, but rather constitute a composite dual-mode gas filling system with main and auxiliary coordination and high and low pressure matching. The second gas filling component 7 is actively pressurized by an external gas source, with a large gas supply, and is suitable for working conditions with extremely high requirements for dissolved oxygen or bubble density. The first gas filling component 6 is suitable for conventional agricultural irrigation needs, and when only the first gas filling component 6 is used for gas filling operation, the pneumatic valve 708 and the regulating seal 716 are both in the closed state.

[0096] The aforementioned water-contacting and airtight components are all equipped with sealing rings or gaskets, which is existing technology and will not be elaborated upon. Furthermore, the inventive point of this solution lies in the unique mechanical linkage structure and working principle inside the water-air mixing device. The external control system, drive unit, or speed regulation unit mentioned refers to conventional automated control components in the field and is not an innovation of this invention.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-mode water-air mixing device for agricultural irrigation, comprising a U-shaped mixing pipeline section (2) and a spiral water guiding component (3), characterized in that: It also includes a flow divider (4), a bubble divider (5), and a first gas filling assembly (6); The U-shaped mixing pipeline section (2) includes a U-shaped variable diameter mixing pipe (202), and a spiral water guiding component (3) extends from the large diameter end into the interior of the U-shaped variable diameter mixing pipe (202); The flow divider assembly (4) includes an outer cylinder (401), an inner cylinder (406), and a dividing hole (408). The bubble dividing assembly (5) includes an arc sleeve (505) and a reciprocating gear (508). The first gas filling assembly (6) includes a corner connector (607). The structure formed by the outer cylinder (401) and the inner cylinder (406) is fixed to the outer wall of the small diameter end of the U-shaped variable diameter mixing pipe (202), and the inner cavity of the inner cylinder (406) is connected to the inner cavity of the U-shaped variable diameter mixing pipe (202). A rotatable flow divider impeller (412) is provided in the inner cavity of the inner cylinder (406). The dividing holes (408) are evenly opened on the upper side wall of the inner cylinder (406). A hollow shaft (502) is screwed to the middle of one side of the main body of the outer cylinder (401). A bubble dividing mesh (504) is fixed to the inner side of the hollow shaft (502). (504) The edges of the inner and outer arc surfaces are slidably connected to the cavity between the inner cylinder (406) and the outer cylinder (401) through the arc sleeve (505). The small diameter end of the U-shaped variable diameter mixing pipe (202) is connected to the L-shaped air injection pipe (601). The outer end of the L-shaped air injection pipe (601) is slidably inserted with the piston (605). The corner connecting seat (607) is fixed to the outer end of the piston (605) and slidably connected to the outer side of the outer cylinder (401). The shaft of the split impeller (412) is fixed to the outer shaft end after passing through the hollow shaft (502) with the cam (610). The eccentric end of the cam (610) is slidably connected to the corner connecting seat (607). A reciprocating rack (507) is fixed to one side of the corner connecting seat (607). The reciprocating gear (508) is fixed to the outer shaft end of the hollow shaft (502) and meshes with the reciprocating rack (507).

2. The dual-mode water-air mixing device for agricultural irrigation according to claim 1, characterized in that: The U-shaped mixing pipeline section (2) also includes a base frame (203) and an inlet valve (204). The large diameter end of the U-shaped variable diameter mixing pipe (202) is connected to an inlet pipe (201). The inlet valve (204) is installed in the inlet pipe (201). The outer bottom of the U-shaped variable diameter mixing pipe (202) is fixedly connected to the base frame (203). The spiral water guiding component (3) includes a water guiding center pipe (301) and a spiral water guiding blade (302). The spiral water guiding blade (302) is spirally wound around the outside of the water guiding center pipe (301), and the outer side of the spiral water guiding blade (302) is fixedly connected to the inner wall of the U-shaped variable diameter mixing pipe (202).

3. The dual-mode water-air mixing device for agricultural irrigation according to claim 2, characterized in that: The diversion assembly (4) also includes an outlet valve (404), an oxygen content monitor (405), a connecting seat (407), opposing side covers (409), a U-shaped connector (410), an inlet hole (411), and a side cover (415). The outer wall of the inner cylinder (406) is fixed to one side of the outer wall of the small diameter end of the U-shaped variable diameter mixing pipe (202) through the connecting seat (407). The top wall of the outer cylinder (401) is connected to an outlet chamber (402), and the outlet of the outlet chamber (402) is connected to an outlet connector (403). The outlet valve (404) and oxygen content monitor (405) are installed in the outlet pipe (403) and are uniformly connected to the external control system. Opposite side cover plates (409) and side cover plates (415) are respectively covered on both sides of the double-layer cavity structure formed by the outer cylinder (401) and the inner cylinder (406). The access hole (411) is opened in the main body of the opposite side cover plate (409). The U-shaped pipe (410) is connected between the inner cavity of the small diameter end of the U-shaped variable diameter mixing pipe (202) and the access hole (411).

4. The dual-mode water-air mixing device for agricultural irrigation according to claim 3, characterized in that: The diversion assembly (4) also includes a bristle assembly (414) and a diversion bevel gear (416). An inner rotating seat (413) is fixedly installed on the bottom surface of the inner cavity of the inner cylinder (406). One end of the shaft of the diversion impeller (412) is screwed to the inner rotating seat (413), and the other end is screwed to the middle of the opposite side cover plate (409). One end of the shaft of the diversion impeller (412) passes through the center of the hollow shaft (502) and is fixedly connected to the diversion bevel gear (416). A drive motor (417) is fixedly installed on one side of the base frame (203). A drive bevel gear (418) is inserted and fixed in the shaft of the drive motor (417), and the drive bevel gear (418) meshes with the diversion bevel gear (416). The bristle assembly (414) is fixedly connected to the top wall of the inner cylinder (406).

5. A dual-mode water-air mixing device for agricultural irrigation according to claim 3 or 4, characterized in that: The inlet end of the inlet pipe (201) and the outlet end of the outlet pipe (403) are also connected to the main irrigation pipeline section (1). The main irrigation pipeline section (1) includes the irrigation main pipe (101) and the main valve (102). The inlet end of the inlet pipe (201) and the outlet end of the outlet pipe (403) are both connected to the irrigation main pipe (101). The main valve (102) is installed in the irrigation main pipe (101).

6. A dual-mode water-air mixing device for agricultural irrigation according to claim 3 or 4, characterized in that: The bubble segmentation assembly (5) also includes a reciprocating rotary seat (501) and a reciprocating frame (503). The reciprocating frame (503) is fixedly connected between the inner end of the hollow shaft (502) and the bubble segmentation mesh (504). The reciprocating rotary seat (501) is fixedly installed in the middle of the side cover plate (415). The hollow shaft (502) is screwed to the reciprocating rotary seat (501). An inner rubber seat (506) is fixedly installed in the inner hole of the hollow shaft (502). The shaft of the diverter impeller (412) is screwed into the inner rubber seat (506).

7. A dual-mode water-air mixing device for agricultural irrigation according to claim 3 or 4, characterized in that: The first gas filling assembly (6) also includes a one-way gas outlet valve (602), which is fixedly installed at the outlet position of the L-shaped gas filling pipe (601). The bottom wall of the L-shaped gas filling pipe (601) is connected to an air inlet pipe (603), and a one-way air inlet valve (604) is installed at the inlet position of the air inlet pipe (603). The top end of the piston (605) is fixedly connected to a piston rod (606), and the other end of the piston rod (606) is fixedly connected to a corner connecting seat (607). The side cover plate (415) The outer side of the corner connecting seat (607) is fixedly connected to a guide slide seat (608), and the inner end of the corner connecting seat (607) is fixedly connected to a guide slide column (609). The guide slide column (609) is slidably connected to the guide slide seat (608). The reciprocating rack (507) is fixedly connected to one side of the guide slide column (609). A rolling groove (612) is provided in the main body of the corner connecting seat (607). An eccentric roller (611) is screwed to the eccentric end of the cam (610). The eccentric roller (611) is slidably connected in the rolling groove (612).

8. A dual-mode water-air mixing device for agricultural irrigation according to claim 1, 2, 3 or 4, characterized in that: The small-diameter end of the U-shaped variable-diameter mixing pipe (202) is also equipped with a second gas filling assembly (7). The second gas filling assembly (7) includes a transfer pipe (701), a variable-diameter gas pipe (702), a gas guide center pipe (703), and a pneumatic valve (708). The transfer pipe (701) is connected between the small-diameter end of the U-shaped variable-diameter mixing pipe (202) and the variable-diameter gas pipe (702). A gas guide spiral blade (704) is wound around the outside of the gas guide center pipe (703). The outer side of the variable diameter air pipe (702) and the inner wall of the transfer pipe (701) are fixedly connected. A sealing column (705) is fixedly connected between the spiral surfaces of the outlet of the air guide spiral blade (704). An external air inlet pipe (707) is connected to one side of the top wall of the variable diameter air pipe (702). A pneumatic valve (708) is installed in the external air inlet pipe (707). A relief groove (718) is opened on one side of the bottom of the sealing column (705). A special-shaped sealing sleeve (717) is fixed at one end of the adjusting seal (716).

9. A dual-mode water-air mixing device for agricultural irrigation according to claim 8, characterized in that: The second gas filling assembly (7) also includes a double sealing seat (710) and an adjusting gear (712). An adjusting long shaft (711) is screwed into the inner hole of the gas guide center tube (703). An adjusting sealing seat (716) is fixedly connected to the bottom end of the adjusting long shaft (711). A bottom sealing sleeve (715) is fixedly installed at the bottom end of the gas guide center tube (703). The bottom end of the adjusting long shaft (711) is screwed to the bottom sealing sleeve (715). A top seat (706) is covered at the top end of the variable diameter gas pipe (702). The seat (706) forms a seal on the inner cavity of the variable diameter air tube (702) and the top end of the adjusting long shaft (711) through the double sealing seat (710). After the top end of the adjusting long shaft (711) is unscrewed out of the double sealing seat (710), it is fixedly connected to the adjusting gear (712). The top end of the top seat (706) is fixedly installed with an adjusting motor (713). An adjusting drive gear (714) is inserted and fixed in the rotating shaft of the adjusting motor (713). The adjusting drive gear (714) meshes with the adjusting gear (712).

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