Water, fertilizer and gas mixing mechanism and irrigation and fertilization device for farmland

Abstract

The invention provides a water, fertilizer and gas mixing mechanism and an irrigation and fertilization device for farmland, and belongs to the technical field of agricultural fertilization devices.The water, fertilizer and gas mixing mechanism comprises a filtering water supply assembly, a connecting pipeline assembly and an irrigation assembly which are sequentially connected, and the water inlet and outlet end of a mixing pipe fitting is connected with a main water pipe; the water and fertilizer mixing assembly and the air-entrapping assembly are installed in the mixing connecting pipe, driving of the water and fertilizer mixing assembly and the air-entrapping assembly is achieved through the same air source, and the air source is switched between the material suction air connecting pipe and the pushing air connecting pipe and can drive a top piston to move in the material injection barrel. The work of extracting the fertilizer stock solution in the fertilizer barrel and releasing the fertilizer stock solution into the inner cavity of the mixing tank is formed, and the mixing of the fertilizer stock solution and a water source can be efficiently realized by utilizing the material distribution pipes which are arranged in rows; after an air source enters an inner cavity of the pneumatic cavity, the pneumatic blades and the funnel cylinder can drive the inner air injection impeller to rotate, and the air source can enter an inner cavity of the inner air injection impeller through an inner hole of the funnel cylinder and is released into a water source of the air filling cavity through the air injection micro holes.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural fertilization devices, and in particular to a water-fertilizer-gas mixing mechanism and an irrigation fertilization device for farmland. Background Art

[0002] The water-fertilizer-gas integration technology combines irrigation, fertilization and aeration, accurately mixes liquid fertilizer, injects oxygen-containing gas, blends with irrigation water, and then transports it to the crop growth area through a controllable pipeline system. The above process ensures that the soil always maintains an appropriate moisture content and looseness. At the same time, according to the unique fertilizer requirements of different crops, soil environment and nutrient content, as well as the growth cycle of crops, the system can provide nutrients regularly and quantitatively to meet the needs of crops at various growth stages.

[0003] The existing water-fertilizer-gas mixing device uses the Venturi ejector as the main aeration equipment. It controls the pressure difference between the ejector inlet and outlet to achieve gas inhalation. There are problems such as large bubble size and low aeration efficiency. Fertilizer is applied through a proportional fertilizer pump. It is necessary to first dissolve the fertilizer in water and then enter the field through the pipe network. In addition, during the operation, there are problems such as unstable pressure difference leading to unstable air intake and uneven water-fertilizer mixing. The proportional fertilizer pump also requires manual preparation of the water-fertilizer mixture, which has the disadvantage of low automation. Summary of the invention

[0004] One of the purposes of the present invention is to provide a water-fertilizer-gas mixing mechanism, which can not only efficiently and evenly release the fertilizer stock solution into the water source in the mixing tank through the access of the same gas source to the water-fertilizer mixing component and the aerating component, but also inject oxygen-containing gas into the aerating cavity through the double cavity formed by the aerating cavity and the pneumatic cavity, in combination with the unique structure composed of the funnel cylinder and the pneumatic blades.

[0005] The object of the present invention is achieved through such a technical solution, a water-fertilizer-gas mixing mechanism, comprising a mixing pipe, a water-fertilizer mixing assembly and an aeration assembly, the mixing pipe comprising a mixing connecting pipe and a proportional mixing pump, the water-fertilizer mixing assembly comprising a mixing tank, a material injection cylinder, a two-way connecting seat, a bottom push cylinder, a material distribution pipe and a fertilizer barrel, and the aeration assembly comprising an aeration chamber, an inner air injection impeller, a funnel cylinder, a pneumatic blade and a pneumatic chamber; Both ends of the mixing connecting pipe are connected to the water supply main pipeline, the proportional mixing pump is connected and installed in the mixing connecting pipe, the water-fertilizer mixing assembly is arranged on one side of the proportional mixing pump, the water suction pipe of the proportional mixing pump extends into the inner cavity of the mixing tank, the injection barrel and the bottom push barrel are fixedly connected up and down through the two-way connecting seat, and the injection barrel is located in the middle of the cavity of the mixing tank, and the bottom push barrel is located outside the cavity of the mixing tank, and a sliding column is slidably connected in the middle of the main body of the two-way connecting seat, and a top piston is fixed at the top of the sliding column, and a bottom piston is fixed at the bottom end. The top piston is slidably connected in the inner cavity of the injection barrel, and the bottom piston is slidably connected in the inner cavity of the bottom push barrel. The side wall of the bottom push barrel is connected with a pushing air pipe and a suction air pipe, the distribution pipe is arranged and connected to the side wall of the injection barrel, and only allows liquid to flow from the injection barrel to the distribution pipe, the fertilizer barrel is located above the mixing tank, and is connected to the top inlet of the injection barrel, and only allows liquid to flow from the fertilizer barrel to the injection barrel, and the bottom wall of the distribution pipe is horizontally arranged with a discharge hole; The air filling chamber is connected to the mixing connecting pipe, and the air filling chamber is located on the water outlet side of the proportional mixing pump, the internal air injection impeller is screwed into the inner cavity of the air filling chamber, the pneumatic chamber is isolated and connected to the air filling chamber, the funnel cylinder is located in the inner cavity of the pneumatic chamber, and is fixed to the internal air injection impeller, each group of blades of the internal air injection impeller is provided with air injection micropores, the pneumatic blades are arranged in a circular array and fixed on the top surface of the funnel cylinder, the inner hole of the funnel cylinder is connected to the inner cavity of the internal air injection impeller, and a liftable air volume regulating block is installed in the inner cavity of the pneumatic chamber. The use process of the technical solution of the present invention is as follows: The external air source can supply air to the aeration component and the water-fertilizer mixing component separately, and the water source can be automatically and quantitatively added to the inner cavity of the mixing tank; The fertilizer stock solution can be added to the inner cavity of the fertilizer barrel. When the top piston is at the initial upper limit position and a water source for mixing is quantitatively added to the mixing tank, the external air source is started and connected to the suction air pipe separately, which can drive the bottom piston to move downward in the inner cavity of the bottom push cylinder, so that the top piston moves downward in the inner cavity of the injection cylinder, and the fertilizer stock solution in the inner cavity of the fertilizer barrel can be extracted; After the inner cavity of the injection barrel is filled with fertilizer stock liquid by the top piston, the connection between the external air source and the suction air pipe is cut off, and the external air source is started to connect with the push air pipe, which can push the bottom piston upward, so that the top piston moves upward, and the fertilizer stock liquid in the injection barrel can be pushed to flow to the distribution pipe, and evenly injected into the quantitative water source in the mixing tank from each group of discharge holes. After the water source in the mixing tank is mixed with the fertilizer stock liquid, it is automatically prepared into a water-fertilizer mixed liquid; Then, the mixing connecting pipe is connected to the main water supply line, and the external air source is connected to the inner cavity of the pneumatic cavity, so that the gas entering the inner cavity of the pneumatic cavity can push the pneumatic blades, drive the funnel cylinder and the internal air injection impeller located in the inner cavity of the air-filling cavity to rotate, and at the same time, the external air source enters the inner cavity of the internal air injection impeller from the inner hole of the funnel cylinder, and can enter the inner cavity of the air-filling cavity from each group of air injection micropores, completing the air filling operation of the air-filling cavity through the water source; At the same time, the water source passing through the mixing connecting pipe will drive the proportional mixing pump, and the pressure of the water source itself will drive the proportional mixing pump to extract the prepared water-fertilizer mixture in the mixing tank in a certain proportion to complete the mixing of water-fertilizer-gas.

[0006] Furthermore, the mixing pipe fitting also includes a dissolved oxygen monitor, and a mixing inlet valve and a mixing outlet valve are respectively installed at the water inlet and outlet of both ends of the mixing connecting pipe. The dissolved oxygen monitor is installed in the mixing connecting pipe and is located between the aeration chamber and the mixing outlet valve. A check valve is also installed in the mixing connecting pipe, and the check valve is located between the mixing inlet valve and the proportional mixing pump, and the aeration assembly is installed between the check valve and the proportional mixing pump.

[0007] Furthermore, the water-fertilizer mixing assembly also includes a tank cover, a push valve is installed in the push air pipe, a suction valve is installed in the suction air pipe, a one-way valve is connected between each group of feeding pipes and the injection barrel, and one-way flow from the inner cavity of the injection barrel to the distribution pipe is provided, and the bottom wall of the distribution pipe is laterally arranged with discharge holes. The tank cover is connected to the top of the mixing tank, and the fertilizer barrel is installed on the top of the tank cover. A bottom fixing seat is fixed in the middle of the bottom end of the mixing tank, and the outer bottom end of the injection barrel is fixedly connected to the bottom fixing seat. An inner sliding seat is fixed in the middle of the main body of the two-way connecting seat, and the sliding column is slidably connected to the inner sliding seat.

[0008] Furthermore, the water-fertilizer mixing assembly also includes a suction pipe, a suction one-way valve, a feed pipe, a feeding metering valve, a water adding metering valve and a water adding valve. The suction pipe is fixedly connected to the top of the injection barrel, a top fixing seat is fixedly installed in the middle of the main body of the tank cover, the suction pipe is fixedly connected to the top fixing seat, the suction one-way valve is installed in the suction pipe, the fertilizer valve is connected to the middle outlet of the bottom end of the fertilizer barrel, one end of the feed pipe is connected to the fertilizer valve, and the other end is connected to the suction pipe, the feeding metering valve is installed in the fertilizer barrel, the upper end of the side wall of the injection barrel is connected to the water adding pipe, and the water adding metering valve and the water adding valve are both installed in the water adding pipe.

[0009] Furthermore, the gas filling component also includes a chamber cover, a pneumatic chamber cover, a blowing inclined tube and an adjusting slide seat, the chamber cover is connected to the top of the gas filling chamber, the bottom end of the inner cavity of the gas filling chamber is fixed with an inner impeller base, the main body of the chamber cover is fixedly installed with an inner impeller top seat, the bottom end of the rotating shaft of the inner gas injection impeller is rotatably connected to the inner impeller base, the top end of the rotating shaft of the inner gas injection impeller is rotatably connected to the inner impeller top seat, each group of blades of the inner gas injection impeller is provided with gas injection micropores, the pneumatic chamber is fixedly connected to the top of the chamber cover, the pneumatic chamber cover is connected to the top of the pneumatic chamber, the blowing inclined tube is obliquely fixedly connected to the main body of the pneumatic chamber cover The pneumatic chamber is connected with the pneumatic chamber inner cavity, a blowing valve is installed in the main pipe of the blowing inclined tube, a built-in check valve is installed in the inner hole at the top end of the internal air injection impeller shaft, a bottom clamp is fixed on one side of the bottom end of the inner cavity of the air filling chamber, a top clamp is fixed on one side of the bottom surface of the chamber cover, bubbles are clamped between the bottom clamp and the top clamp to form a network, an electric cylinder seat is fixed on the outer top surface of the pneumatic chamber cover, an electric cylinder is fixed on the inner bottom surface of the electric cylinder seat, an adjusting slide is fixed on the middle part of the main body of the pneumatic chamber cover, and the telescopic rod of the electric cylinder is slid into the inner cavity of the pneumatic chamber from the adjusting slide and fixedly connected with the top end of the gas volume adjusting block.

[0010] Furthermore, it also includes an air pump and a main control box. The air outlet end of the air pump is separately connected to the push air pipe, the suction air pipe and the blowing inclined pipe, and the main control box is connected to each electrical control component.

[0011] Another object of the present invention is to provide a farmland irrigation and fertilization device, comprising a water-fertilizer-gas mixing mechanism, a filtering water supply component, a connecting pipeline component and an irrigation component, wherein the filtering water supply component comprises a water source and a water pump, wherein the water pump is connected to the water outlet of the water source, the water outlet of the water pump is connected to a sand filter, and the water outlet of the sand filter is connected to a water outlet valve. The connecting pipeline assembly includes a main water pipe, an original pressure gauge, a water passing valve and a differential pressure gauge. The main water pipe is connected to the water outlet end of the water outlet valve. The original pressure gauge, the water passing valve and the differential pressure gauge are installed in the main water pipe in sequence according to the water flow direction. The inlet and outlet ends of the mixed connecting pipe are connected to the main water pipe. A laminated filter is also installed in the water outlet pipe of the main water pipe. The irrigation assembly includes a connecting branch pipe, an irrigation valve, a flow meter and a sampling module. The connecting branch pipe is connected to the water outlet end of the main water pipe. The irrigation valve and the flow meter are installed in the connecting branch pipe. The connecting branch pipe is connected to an irrigation branch pipe according to the row spacing of crops. The irrigation branch pipe is connected to a drip irrigation belt according to the plant spacing of crops. The sampling module is buried near the crops in the farmland to monitor the soil environment during the growth of crops.

[0012] By adopting the above technical solution, the present invention can form the following beneficial effects: (1) The present invention not only installs a proportional mixing pump in the main pipe of the mixing connecting pipe, which can bring the water-fertilizer mixed liquid in the water-fertilizer mixing component into the water source flowing in the mixing connecting pipe in a certain proportion, and irrigate the farmland with the water source, but also sets the water-fertilizer mixing component to automatically add water and automatically add fertilizer stock solution, which solves the current problem of manually preparing the water-fertilizer mixed liquid and improves the degree of automation; (2) The present invention uses an inner slide seat to connect the injection cylinder and the bottom push cylinder to form a double-chamber structure, and a top piston and a bottom piston are respectively connected to the two ends of the slide column, so that when the external air source pushes the bottom piston in the inner cavity of the bottom push cylinder to move up and down, the top piston in the inner cavity of the injection cylinder can be safely and reliably formed to pump and push, so that the fertilizer stock solution in the fertilizer barrel can be automatically added to the water source in the inner cavity of the mixing tank by the external air source, and the fertilizer stock solution can be efficiently and evenly mixed with the water source in the mixing tank by using the evenly distributed distribution pipes outside the injection cylinder. Compared with the method of adding the water source and the fertilizer stock solution into the inner cavity of the mixing tank and then directly stirring and mixing, it has the advantage of more uniform and faster mixing; (3) After the air source is introduced into the inner cavity of the pneumatic cavity, the air source can not only enter the inner cavity of the inner gas injection impeller from the inner hole of the funnel cylinder, and be directly injected into the water source in the inner cavity of the gas injection cavity from each group of evenly distributed gas injection micropores, but also the air source can push the pneumatic blades to drive the funnel cylinder and the inner gas injection impeller to rotate. With the rotation state formed by the inner gas injection impeller in the water source in the inner cavity of the gas injection cavity and the gas ejected from each group of gas injection micropores, a water-gas mixture can be efficiently formed, so that a certain oxygen content is formed in the water source; and a gas volume regulating block that can be raised and lowered is installed in the inner cavity of the pneumatic cavity. The outer surface of the gas volume regulating block matches the inner hole surface of the funnel cylinder. Through the lifting and lowering action of the gas volume regulating block, a gap of different specifications and sizes can be formed between the outer surface of the gas volume regulating block and the inner hole of the funnel cylinder, so that the air intake of the funnel cylinder can be adjusted independently when the rotation speed of the pneumatic blades and the funnel cylinder remains unchanged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a system schematic diagram of the present invention; Figure 2 This is a connection diagram of the filtering and water supply assembly of the present invention; Figure 3It is a connection schematic diagram of the connection pipeline assembly of the present invention; Figure 4 It is a connection diagram of the watering assembly of the present invention; Figure 5 It is a connection schematic diagram of the mixing pipe fitting of the present invention; Figure 6 It is a structural schematic diagram of the water-fertilizer mixing assembly of the present invention; Figure 7 It is a structural schematic diagram of the injection barrel part of the present invention; Figure 8 It is a structural schematic diagram of the fertilizer barrel part of the present invention; Fig. 9 It is a structural schematic diagram of the material distribution pipe part of the present invention; Fig.10 It is a structural schematic diagram of the aeration assembly of the present invention; Fig.11 It is a schematic diagram of the explosion structure of the bubble-forming net part of the present invention; Fig.12 It is a structural schematic diagram of the cylindrical part of the funnel of the present invention; Fig.13 It is a structural schematic diagram of the gas volume regulating block part of the present invention.

[0015] Reference numerals: 1. Filter water supply component; 101. Water source; 102. Water pump; 103. Sand filter; 104. Water outlet valve; 2. Connecting pipeline components; 201. Main water pipe; 202. Original pressure gauge; 203. Water valve; 204. Differential pressure gauge; 205. Laminated filter; 3. Irrigation assembly; 301. Connecting branch pipe; 302. Irrigation valve; 303. Flow meter; 304. Irrigation branch pipe; 305. Drip irrigation belt; 306. Sampling module; 4. Mixing pipe fittings; 401. Mixing connecting pipe; 402. Mixing inlet valve; 403. Mixing outlet valve; 404. Check valve; 405. Dissolved oxygen monitor; 406. Proportional mixing pump; 5. Water-fertilizer mixing assembly; 501. Mixing tank; 502. Supporting feet; 503. Injection barrel; 504. Two-way connection seat; 505. Bottom pusher; 506. Push air pipe; 507. Suction air pipe; 508. Push valve; 509. Suction valve; 510. Distributor pipe; 511. Check valve; 512. Tank cover; 513. Fertilizer barrel; 514. Bottom fixed seat; 515. Inner sliding seat; 516. Sliding column; 517. Bottom piston; 518. Top piston; 519. Suction pipe; 520. Top fixed seat; 521. Suction check valve; 522. Fertilizer valve; 523. Feed pipe; 524. Feed metering valve; 525. Water pipe; 526. Water metering valve; 527. Water valve; 528. Discharge hole; 6. Aeration assembly; 601. Aeration chamber; 602. Chamber cover; 603. Inner impeller base; 604. Inner impeller top seat; 605. Inner gas injection impeller; 606. Gas injection micropores; 607. Funnel cylinder; 608. Pneumatic blades; 609. Pneumatic chamber; 610. Pneumatic chamber cover; 611. Blowing oblique tube; 612. Blowing valve; 613. Built-in check valve; 614. Bubble uniformity net; 615. Bottom card seat; 616. Top card seat; 617. Adjustment slide seat; 618. Electric cylinder seat; 619. Electric cylinder; 620. Gas volume adjustment block; 7. Air pump; 8. Main control box. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0018] like Figure 1-Figure 13 As shown, a water-fertilizer-gas mixing mechanism and a farmland irrigation and fertilization device, a water pump 102 in a filtering water supply component 1 is connected to a water outlet of a water source 101, a gravel filter 103 is connected to the water outlet of the water pump 102, a water outlet of the gravel filter 103 is connected to a water outlet valve 104, the water pump 102 can provide power for the irrigation water source, and the gravel filter 103 is used to achieve preliminary filtration of the water source; And the sand filter 103 can be cleaned and discharged when the water outlet valve 104 is closed; The main water pipe 201 in the connecting pipe assembly 2 is connected to the water outlet end of the water outlet valve 104, and the original pressure gauge 202, the water valve 203 and the differential pressure gauge 204 are installed in the main water pipe 201 in sequence according to the water flow direction; The water-passing valve 203 is located between the water inlet and outlet ends of the mixing connecting pipe 401 and the main water pipe 201, and the watering operation can be performed separately after the water-passing valve 203 is opened while the mixing inlet valve 402 and the mixing outlet valve 403 are closed; The original pressure gauge 202 is located at the front end where the water inlet end of the mixing connecting pipe 401 is connected to the main water pipe 201, and the differential pressure gauge 204 is located at the rear end where the water outlet end of the mixing connecting pipe 401 is connected to the main water pipe 201. After the gas is injected into the water source in the mixing connecting pipe 401 by using the gas filling component 6, the pressure difference formed between the original pressure gauge 202 and the differential pressure gauge 204 can be used to intuitively display the gas injection amount, and cooperate with the oxygen content detection formed by the dissolved oxygen monitor 405 after the gas is injected into the water source in the mixing connecting pipe 401, to form an automatic control of the gas volume injected into the water source of the mixing connecting pipe 401 by the gas filling component 6; A laminated filter 205 is also installed in the outlet pipe of the main water pipe 201, the purpose of which is to further intercept particulate matter in the water source and prevent the particulate matter from clogging the irrigation device at the rear end; The connecting branch pipe 301 in the irrigation assembly 3 is connected to the water outlet end of the main water pipe 201, and the irrigation valve 302 and the flow meter 303 are both installed in the connecting branch pipe 301; Similarly, the laminar filter 205 can be flushed and drained while the irrigation valve 302 is closed; The flow meter 303 is used to monitor and control the irrigation water flow to ensure that the farmland receives a reasonable amount of irrigation water; The connecting branch pipe 301 is connected to an irrigation branch pipe 304 according to the crop planting row spacing, and the irrigation branch pipe 304 is connected to a drip irrigation belt 305 according to the crop planting plant spacing; The sampling module 306 is buried near the crops in the farmland, and can monitor the soil environment during the growth of the crops, including but not limited to the monitoring of temperature, humidity, nutrients and pH value, and form automatic control of crop irrigation; The water inlet and outlet ends of the mixing connecting pipe 401 in the mixing pipe fitting 4 are connected to the main water pipe 201, the proportional mixing pump 406 is connected and installed in the mixing connecting pipe 401, the water-fertilizer mixing component 5 is arranged on one side of the proportional mixing pump 406, the water-fertilizer mixing component 5 and the aeration component 6 are connected to the same air source, the water suction pipe of the proportional mixing pump 406 extends into the inner cavity of the mixing tank 501, the injection cylinder 503 and the bottom push cylinder 505 are fixedly connected up and down through the two-way connecting seat 504, and the injection cylinder 503 is located in the middle of the cavity of the mixing tank 501, and the bottom push cylinder 505 is located outside the cavity of the mixing tank 501, and the middle of the main body of the two-way connecting seat 504 is slidably connected with a sliding column 516, and the top of the sliding column 516 is fixed with a top piston 518, a bottom piston 517 is fixed at the bottom end, a top piston 518 is slidably connected in the inner cavity of the injection barrel 503, the bottom piston 517 is slidably connected in the inner cavity of the bottom push barrel 505, the side wall of the bottom push barrel 505 is connected with a push air pipe 506 and a suction air pipe 507, and the inner cavity of the bottom push barrel 505 can be supplied with air separately, a distribution pipe 510 is arranged and connected to the side wall of the injection barrel 503, and only allows liquid to flow from the injection barrel 503 to the distribution pipe 510, the fertilizer barrel 513 is located above the mixing tank 501, and is connected to the top inlet of the injection barrel 503, and only allows liquid to flow from the fertilizer barrel 513 to the injection barrel 503, and the bottom wall of the distribution pipe 510 is arranged horizontally with a discharge hole 528; The gas-filling chamber 601 is connected to the mixing connecting pipe 401, and the gas-filling chamber 601 is located at the water outlet side of the proportional mixing pump 406. The inner gas-injection impeller 605 is screwed into the inner cavity of the gas-filling chamber 601. The pneumatic chamber 609 is isolated and connected to the gas-filling chamber 601, and the pneumatic chamber 609 is located above the gas-filling chamber 601. The funnel cylinder 607 is located in the inner cavity of the pneumatic chamber 609 and is fixedly connected to the inner gas-injection impeller 605. Each group of blades of the inner gas-injection impeller 605 is provided with gas-injection micropores 606. The pneumatic blades 60 8 are arranged in a circular array and fixed on the top surface of the funnel cylinder 607, the inner hole of the funnel cylinder 607 is connected to the inner cavity of the inner air injection impeller 605, the upper part of the cavity of the pneumatic cavity 609 is connected to the air source formed by the air pump 7, and a liftable air volume regulating block 620 is installed in the inner cavity of the pneumatic cavity 609, and the outer surface of the air volume regulating block 620 matches the inner hole surface of the funnel cylinder 607, so that the air intake of the funnel cylinder 607 can be adjusted independently when the rotation speed of the pneumatic blades 608 and the funnel cylinder 607 remains unchanged; The air outlet end of the air pump 7 is separately connected to the push air pipe 506, the suction air pipe 507 and the blowing inclined pipe 611, and the main control box 8 can form automatic control of water, fertilizer and air mixing and irrigation process; Here’s how it works: The main water pipe 201 connected to the mixing connecting pipe 401 is used to provide irrigation water. The water-fertilizer mixing component 5 and the aeration component 6 installed in the mixing connecting pipe 401 can mix a certain amount of fertilizer and oxygen into the irrigation water. The air pump 7 can independently supply air to the water-fertilizer mixing component 5 and the aeration component 6, and water can be automatically and quantitatively added to the inner cavity of the mixing tank 501; The fertilizer stock solution can be added to the inner cavity of the fertilizer barrel 513. When the top piston 518 is at the initial upper limit position and a water source for mixing is quantitatively added to the mixing tank 501, the air source formed by the air pump 7 is started and connected to the suction air pipe 507 separately, which can drive the bottom piston 517 to move downward in the inner cavity of the bottom push cylinder 505, so that the top piston 518 moves downward in the inner cavity of the injection cylinder 503, and the fertilizer stock solution in the inner cavity of the fertilizer barrel 513 can be extracted; Since the distribution pipe 510 is unidirectionally connected to the inner cavity of the injection barrel 503, only the liquid is allowed to flow from the injection barrel 503 to the distribution pipe 510, and the downward movement of the top piston 518 will not extract the water source in the inner cavity of the injection barrel 503; After the inner cavity of the injection barrel 503 is filled with the fertilizer liquid by the top piston 518, the connection between the air source formed by the air pump 7 and the suction air pipe 507 is cut off, and the air source formed by the air pump 7 is started to connect with the push air pipe 506, which can push the bottom piston 517 to move upward, so that the top piston 518 moves upward, which can push the fertilizer liquid in the injection barrel 503 to flow to the distribution pipe 510, and evenly inject it into the quantitative water source in the mixing tank 501 from each group of discharge holes 528. Similarly, since the fertilizer barrel 513 is unidirectionally connected to the injection barrel 503, only the liquid is allowed to flow from the fertilizer barrel 513 to the injection barrel 503. The pushing action formed by the top piston 518 will not cause the fertilizer liquid in the injection barrel 503 to return to the fertilizer barrel 513. After the water source and the fertilizer stock solution in the mixing tank 501 are mixed, they are automatically prepared into a water-fertilizer mixed solution; Then, the mixing connecting pipe 401 is connected to the main water supply line, and the air source formed by the air pump 7 is connected to the inner cavity of the pneumatic chamber 609, so that the gas entering the inner cavity of the pneumatic chamber 609 can push the pneumatic blades 608, drive the funnel cylinder 607 and the internal air injection impeller 605 located in the inner cavity of the air-filling chamber 601 to rotate, and at the same time, the air source formed by the air pump 7 enters the inner cavity of the internal air injection impeller 605 from the inner hole of the funnel cylinder 607, and can enter the inner cavity of the air-filling chamber 601 from each group of air injection micropores 606, thereby completing the air filling operation of the air-filling chamber 601 through the water source; At the same time, the water source passing through the mixing connecting pipe 401 drives the proportional mixing pump 406, and the pressure of the water source drives the proportional mixing pump 406 to extract the water-fertilizer mixed liquid prepared in the mixing tank 501 in a certain proportion to complete the mixing of water-fertilizer-gas; When only aeration is required without fertilization, the proportional mixing pump 406 can be turned off, and only water will pass through the mixing connecting pipe 401 without fertilizer being injected. By connecting the air pump 7 and the pneumatic chamber 609 separately, the operation of aeration irrigation without fertilization can be realized; Specifically, the mixing pipe 4 is as follows Figure 5 As shown, a mixing inlet valve 402 and a mixing outlet valve 403 are respectively installed at the water inlet and outlet of both ends of the mixing connecting pipe 401, so that the water-fertilizer mixing component 5 and the aeration component 6 connected to the mixing connecting pipe 401 and the mixing pipe 4 itself can be cut off, and conventional irrigation operations can be performed separately using the filtering water supply component 1, the connecting pipeline component 2 and the irrigation component 3; The dissolved oxygen monitor 405 is installed in the mixing connecting pipe 401 and is located between the gas filling chamber 601 and the mixing outlet valve 403. A check valve 404 is also installed in the mixing connecting pipe 401, and the check valve 404 is located between the mixing inlet valve 402 and the proportional mixing pump 406. The gas filling assembly 6 is installed between the check valve 404 and the proportional mixing pump 406. The dissolved oxygen monitor 405 is used to detect the oxygen content of the water source in the mixing connecting pipe 401 after the gas is injected. The purpose is to adjust the amount of gas injected into the water source of the mixing connecting pipe 401 by the gas adding component 6 in real time according to the detection result of the dissolved oxygen monitor 405; The purpose of setting the check valve 404 is to allow the positive pressure gas to be injected into the mixing connecting pipe 401 only along the flow direction of the water source in the mixing connecting pipe 401, thereby eliminating the adverse effect of the positive pressure gas on the flow pressure of the water source in the mixing connecting pipe 401.

[0019] The specific structure of the water-fertilizer mixing assembly 5 is as follows: Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, the outer bottom end of the mixing tank 501 is fixedly connected with a support leg 502, the purpose of which is to build up a sufficient distance between the mixing tank 501 and the installation surface to provide space for the bottom push cylinder 505; A push valve 508 is installed in the push air connection pipe 506, and a suction valve 509 is installed in the suction air connection pipe 507, so that the air intake operation of the push air connection pipe 506 and the suction air connection pipe 507 can be controlled separately; A one-way valve 511 is connected between each group of material pipes 510 and the injection barrel 503 to achieve one-way flow of liquid from the inner cavity of the injection barrel 503 to the material pipe 510; The tank cover 512 is connected to the top opening of the mixing tank 501, and the fertilizer barrel 513 is installed on the top of the tank cover 512; A bottom fixing seat 514 is fixed to the middle of the bottom end of the mixing tank 501, the outer bottom end of the injection barrel 503 is fixedly connected to the bottom fixing seat 514, an inner sliding seat 515 is fixed to the middle of the main body of the two-way connecting seat 504, and a sliding column 516 is slidably connected to the inner sliding seat 515; The suction pipe 519 is fixedly connected to the top of the injection barrel 503, and a top fixing seat 520 is fixedly installed in the middle of the main body of the tank cover 512. The suction pipe 519 is fixedly connected to the top fixing seat 520, and a suction check valve 521 is installed in the suction pipe 519 to realize the one-way flow of liquid from the suction pipe 519 to the inner cavity of the injection barrel 503. A fertilizer valve 522 is connected to the middle outlet of the bottom end of the fertilizer barrel 513, one end of the feed pipe 523 is connected to the fertilizer valve 522, and the other end is connected to the suction pipe 519, and a feed metering valve 524 is installed in the fertilizer barrel 513; Sufficient fertilizer stock solution is added into the fertilizer barrel 513. When the top piston 518 is at the initial upper limit position, after the fertilizer valve 522 is opened, the downward movement of the top piston 518 can form a negative pressure in the inner cavity of the injection barrel 503, so that the fertilizer stock solution in the fertilizer barrel 513 enters the inner cavity of the injection barrel 503 through the feed pipe 523 and the suction pipe 519. In the process of flowing through the feeding metering valve 524, the volume of the fertilizer stock solution injected into the inner cavity of the injection barrel 503 can be automatically calculated; A water adding pipe 525 is connected to the upper end of one side wall of the injection barrel 503, and a water adding metering valve 526 and a water adding valve 527 are both installed in the water adding pipe 525. When the interior of the mixing tank 501 is empty, the water adding valve 527 can be opened to inject water into the inner cavity of the mixing tank 501. Similarly, the volume of the water source injected into the inner cavity of the mixing tank 501 can be automatically calculated by the water adding metering valve 526, so that the water source and the fertilizer concentrate in the mixing tank 501 can be automatically added in a quantitative manner.

[0020] The specific structure of the gas filling assembly 6 is as follows Fig.10 , Fig.11 , Fig.12 and Fig.13 As shown, the chamber cover 602 is connected to the top opening of the gas-filling chamber 601, the inner impeller base 603 is fixed to the bottom end of the inner cavity of the gas-filling chamber 601, the inner impeller top seat 604 is fixedly installed in the body of the chamber cover 602, the bottom end of the rotating shaft of the inner gas-injecting impeller 605 is rotatably connected to the inner impeller base 603, and the top end of the rotating shaft of the inner gas-injecting impeller 605 is sealed and rotatably connected to the inner impeller top seat 604; The pneumatic cavity 609 is fixedly connected to the top of the cavity cover 602, and the pneumatic cavity cover 610 is connected to the top opening of the pneumatic cavity 609. The blowing oblique tube 611 is fixedly connected to the main body of the pneumatic cavity cover 610 in an oblique direction and communicated with the inner cavity of the pneumatic cavity 609. The purpose of obliquely arranging the blowing oblique tube 611 is that the blowing oblique tube 611 can form a certain spatial angle with the pneumatic blade 608, so that the gas blown out of the blowing oblique tube 611 can better push the pneumatic blade 608. A blowing valve 612 is installed in the main pipe of the blowing inclined tube 611. The blowing valve 612 is used to control the air intake of the inner cavity of the pneumatic cavity 609. A built-in check valve 613 is installed in the inner hole at the top of the rotating shaft of the inner gas injection impeller 605. The built-in check valve 613 can prevent the water source in the inner cavity of the gas injection cavity 601 from reversely entering the inner cavity of the pneumatic cavity 609 through the gas injection micropores 606 and the inner hole of the funnel cylinder 607; A bottom card seat 615 is fixed to one side of the bottom end of the inner cavity of the gas-adding cavity 601, and a top card seat 616 is fixed to one side of the bottom surface of the cavity cover 602. A bubble-forming net 614 is fixed between the bottom card seat 615 and the top card seat 616. Micropores are provided in the main body of the bubble-forming net 614 to separate the oxygen-containing bubbles of the water source entering the gas-adding cavity 601, so that the oxygen-containing bubbles can be better mixed with the water source. And if Fig.10 As shown, the flow direction of the water source in the mixing connecting pipe 401 and the gas adding chamber 601 is always in the direction indicated by the arrow, that is, it flows from the inside of the gas adding chamber 601 to the direction of the bubble uniform forming network 614; An electric cylinder seat 618 is fixed to the outer top surface of the pneumatic chamber cover 610, an electric cylinder 619 is installed and fixed to the inner bottom surface of the electric cylinder seat 618, and an adjusting slide 617 is installed and fixed to the middle part of the main body of the pneumatic chamber cover 610. The telescopic rod of the electric cylinder 619 slides from the adjusting slide 617 to the inner cavity of the pneumatic chamber 609 and is fixedly connected to the top of the air volume adjustment block 620, thereby forming an automatic lifting and moving action of the air volume adjustment block 620.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements 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 water-fertilizer-gas mixing mechanism, comprising a mixing pipe (4), characterized in that: It also includes a water-fertilizer mixing component (5) and an aeration component (6); The mixing pipe (4) comprises a mixing connection pipe (401) and a proportional mixing pump (406); the water-fertilizer mixing assembly (5) comprises a mixing tank (501), an injection cylinder (503), a two-way connection seat (504), a bottom push cylinder (505), a material distribution pipe (510) and a fertilizer barrel (513); and the aeration assembly (6) comprises an aeration chamber (601), an inner aeration impeller (605), a funnel cylinder (607), pneumatic blades (608) and a pneumatic chamber (609); Both ends of the mixing connection pipe (401) are connected to the main water supply line, the proportional mixing pump (406) is connected and installed in the mixing connection pipe (401), the water-fertilizer mixing assembly (5) is arranged on one side of the proportional mixing pump (406), the water suction pipe of the proportional mixing pump (406) extends into the inner cavity of the mixing tank (501), the injection cylinder (503) and the bottom push cylinder (505) are fixedly connected via a two-way connection seat (504), and the injection cylinder (503) is located in the middle of the cavity of the mixing tank (501), and the bottom push cylinder (505) is fixedly connected to the bottom push cylinder (505) via a two-way connection seat (504). (505) is located outside the cavity of the mixing tank (501), a sliding column (516) is slidably connected to the middle part of the main body of the two-way connecting seat (504), a top piston (518) is fixed to the top of the sliding column (516), and a bottom piston (517) is fixed to the bottom end, the top piston (518) is slidably connected to the inner cavity of the injection cylinder (503), and the bottom piston (517) is slidably connected to the inner cavity of the bottom push cylinder (505), and the side wall of the bottom push cylinder (505) is connected to the push air pipe (506) and the suction air pipe (507), The material distribution pipe (510) is arranged and connected to the side wall of the injection barrel (503), and only allows liquid to flow from the injection barrel (503) to the material distribution pipe (510). The fertilizer barrel (513) is located above the mixing tank (501) and is connected to the top inlet of the injection barrel (503), and only allows liquid to flow from the fertilizer barrel (513) to the injection barrel (503). The gas filling chamber (601) is connected to the mixing connecting pipe (401), and the gas filling chamber (601) is located on the water outlet side of the proportional mixing pump (406). The impeller (605) is screwed into the inner cavity of the gas-filling cavity (601); the pneumatic cavity (609) is isolated and connected to the gas-filling cavity (601); the funnel cylinder (607) is located in the inner cavity of the pneumatic cavity (609) and is fixedly connected to the inner gas-injection impeller (605); the pneumatic blades (608) are arranged and fixed on the top surface of the funnel cylinder (607); the inner hole of the funnel cylinder (607) is connected to the inner cavity of the inner gas-injection impeller (605); and a gas volume regulating block (620) that can be raised and lowered is installed in the inner cavity of the pneumatic cavity (609).

2. A water-fertilizer-gas mixing mechanism according to claim 1, characterized in that: The mixing pipe (4) further comprises a dissolved oxygen monitor (405). A mixing inlet valve (402) and a mixing outlet valve (403) are respectively installed at the water inlet and outlet of both ends of the mixing connecting pipe (401). The dissolved oxygen monitor (405) is installed in the mixing connecting pipe (401) and is located between the gas filling chamber (601) and the mixing outlet valve (403). A check valve (404) is also installed in the mixing connecting pipe (401), and the check valve (404) is located between the mixing inlet valve (402) and the proportional mixing pump (406). The gas filling assembly (6) is installed between the check valve (404) and the proportional mixing pump (406).

3. A water-fertilizer-gas mixing mechanism according to claim 1 or 2, characterized in that: The water-fertilizer mixing assembly (5) further comprises a tank cover (512), a push valve (508) is installed in the push air connection pipe (506), a suction valve (509) is installed in the suction air connection pipe (507), a one-way valve (511) is connected between each group of feeding pipes (510) and the injection barrel (503), a one-way flow is allowed from the inner cavity of the injection barrel (503) to the feeding pipe (510), and the bottom wall of the feeding pipe (510) is provided with discharge holes ( 528, a tank cover (512) is connected to the top of the mixing tank (501), a fertilizer barrel (513) is installed on the top of the tank cover (512), a bottom fixing seat (514) is fixed in the middle of the bottom end of the mixing tank (501), an outer bottom end of the injection barrel (503) is fixedly connected to the bottom fixing seat (514), an inner sliding seat (515) is fixed in the middle of the main body of the two-way connecting seat (504), and a sliding column (516) is slidably connected to the inner sliding seat (515).

4. A water-fertilizer-gas mixing mechanism according to claim 3, characterized in that: The water-fertilizer mixing assembly (5) further comprises a material suction pipe (519), a material suction check valve (521), a material inlet pipe (523), a material addition metering valve (524), a water addition metering valve (526) and a water addition valve (527). The material suction pipe (519) is fixedly connected to the top of the injection barrel (503). A top fixing seat (520) is fixedly installed in the middle of the main body of the tank cover (512). The material suction pipe (519) is fixedly connected to the top fixing seat (520). The material suction check valve (521) is installed In the material suction pipe (519), a fertilizer valve (522) is connected to the middle outlet of the bottom end of the fertilizer barrel (513), one end of the feed pipe (523) is connected to the fertilizer valve (522), and the other end is connected to the material suction pipe (519), a material addition metering valve (524) is installed in the fertilizer barrel (513), and a water addition pipe (525) is connected to the upper end of the side wall of the injection cylinder (503), and the water addition metering valve (526) and the water addition valve (527) are both installed in the water addition pipe (525).

5. A water-fertilizer-gas mixing mechanism according to claim 1, 2 or 4, characterized in that: The gas filling assembly (6) further comprises a chamber cover (602), a pneumatic chamber cover (610), a blowing inclined tube (611) and an adjusting slide seat (617). The chamber cover (602) is connected to the top of the gas filling chamber (601). An inner impeller base (603) is fixed to the bottom of the inner chamber of the gas filling chamber (601). An inner impeller top seat (604) is fixedly installed in the body of the chamber cover (602). The bottom end of the rotating shaft of the inner gas injection impeller (605) is connected to the inner impeller base (603). 603) is rotatably connected, the top end of the rotating shaft of the inner air injection impeller (605) is rotatably connected to the inner impeller top seat (604), each set of blades of the inner air injection impeller (605) is provided with air injection microholes (606), the pneumatic cavity (609) is fixedly connected to the top end of the cavity cover (602), the pneumatic cavity cover (610) is covered on the top end of the pneumatic cavity (609), and the blowing oblique tube (611) is obliquely fixedly connected to the main body of the pneumatic cavity cover (610) The pneumatic chamber (609) is connected to the inner cavity of the pneumatic chamber (609), a blowing valve (612) is installed in the main pipe of the blowing inclined tube (611), a built-in check valve (613) is installed in the inner hole at the top of the rotating shaft of the inner gas injection impeller (605), a bottom clamping seat (615) is fixed on one side of the bottom end of the inner cavity of the gas injection chamber (601), a top clamping seat (616) is fixed on one side of the bottom surface of the chamber cover (602), and a clamping seat (615) and a top clamping seat (616) are fixed between the bottom clamping seat (615) and the top clamping seat (616). The inherent bubbles are uniformly formed into a net (614), an electric cylinder seat (618) is fixed to the outer top surface of the pneumatic chamber cover (610), an electric cylinder (619) is installed and fixed to the inner bottom surface of the electric cylinder seat (618), an adjustment slide seat (617) is installed and fixed to the middle part of the main body of the pneumatic chamber cover (610), and a telescopic rod of the electric cylinder (619) is slidably inserted from the adjustment slide seat (617) into the inner cavity of the pneumatic chamber (609) and then fixedly connected to the top end of the gas volume adjustment block (620).

6. A water-fertilizer-gas mixing mechanism according to claim 5, characterized in that: It also includes an air pump (7) and a main control box (8), wherein the air outlet end of the air pump (7) is separately connected to the push air connection pipe (506), the suction air connection pipe (507) and the blowing inclined pipe (611), and the main control box (8) is connected to each electric control component.

7. A fertilization device for farmland, comprising a water-fertilizer-gas mixing mechanism according to any one of claims 1 to 6, characterized in that: The invention also comprises a filtering water supply component (1), wherein the filtering water supply component (1) comprises a water source (101) and a water pump (102), wherein the water pump (102) is connected to the water outlet of the water source (101), the water outlet of the water pump (102) is connected to a sand filter (103), and the water outlet of the sand filter (103) is connected to a water outlet valve (104).

8. The farmland irrigation and fertilization device according to claim 7, characterized in that: The invention also comprises a connecting pipe assembly (2), the connecting pipe assembly (2) comprising a main water pipe (201), an original pressure gauge (202), a water-passing valve (203) and a differential pressure gauge (204); the main water pipe (201) is connected to the water outlet end of the water outlet valve (104); the original pressure gauge (202), the water-passing valve (203) and the differential pressure gauge (204) are sequentially installed in the main water pipe (201); the water inlet and outlet ends of the mixing connecting pipe (401) are both connected to the main water pipe (201); and a laminated filter (205) is also installed in the water outlet pipe of the main water pipe (201).

9. The farmland irrigation and fertilization device according to claim 8, characterized in that: The invention also comprises an irrigation assembly (3), wherein the irrigation assembly (3) comprises a connecting branch pipe (301), an irrigation valve (302), a flow meter (303) and a sampling module (306); the connecting branch pipe (301) is connected to the water outlet end of the main water pipe (201); the irrigation valve (302) and the flow meter (303) are both installed in the connecting branch pipe (301); an irrigation branch pipe (304) is arranged and connected in the connecting branch pipe (301); a drip irrigation belt (305) is arranged and connected in the irrigation branch pipe (304); and the sampling module (306) is buried in the farmland.

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