Airflow stirring fertilizer mixing device

Abstract

The utility model relates to the technical field of material stirring equipment, in particular to an airflow stirring fertilizer mixing device which comprises an airflow stirring fertilizer mixing pipe frame, and the airflow stirring fertilizer mixing pipe frame comprises a bottom stirring air injection branch pipe which is arranged at the bottom in a water and fertilizer mixing tank during use. An airflow channel of the airflow stirring and fertilizer mixing pipe frame comprises upward air injection holes which are formed in bottom stirring air injection branch pipes and are used for injecting air upwards and downward air injection holes which are used for injecting air to the tank bottom of the water and fertilizer mixing tank; the bottom-stirring air injection branch pipes can extend to the position, close to the inner side wall, of the water and fertilizer mixing tank under the condition of not occupying excessive height space in the tank, so that downward air injection holes in the bottom-stirring air injection branch pipes can be close to the inner side wall of the water and fertilizer mixing tank; the air injection hole is not easily far away from the inner side wall of the water and fertilizer mixing tank due to the size limitation of the bottom stirring air injection branch pipe, so that the stirring effect on materials in different areas on the tank bottom of the water and fertilizer mixing tank is favorably met to avoid material deposition.

Description

Technical Field

[0001] The utility model relates to the technical field of material stirring equipment, in particular to an air flow stirring and fertilizer mixing device. Background Art

[0002] With the advancement of agricultural modernization, the integrated water and fertilizer technology has been widely applied in modern agriculture and has become an important means to improve crop yield and quality. The integrated water and fertilizer system includes a water and fertilizer integrated machine and a fertilizer mixing device. The fertilizer mixing device is used to mix soluble solid fertilizers and water evenly and then supply them to the water and fertilizer integrated machine. The water and fertilizer integrated machine controls the fertilization amount and directly provides water and nutrients to crops regularly, quantitatively and proportionally according to the fertilizer requirements of different crops, soil environment and nutrient content conditions.

[0003] In the existing fertilizer mixing devices, such as a fertilizer storage tank for a water and fertilizer integrated irrigation and fertilization system disclosed in a Chinese utility model patent with the authorization announcement number of CN212739235U, the fertilizer storage tank includes a tank body, a mechanical stirring mechanism and an air flow stirring mechanism. The tank body is the water and fertilizer mixing tank. A mechanical stirring mechanism is arranged inside the tank body, and an air flow stirring mechanism is arranged at the bottom of the tank body. The air flow stirring mechanism includes a balloon, a connecting pipe and an air source. One end of the balloon is connected to the connecting pipe, and the connecting pipe passes through the tank body and is connected to the air source. The balloon is a hollow sphere, and air injection holes are distributed on the balloon in all directions. When using the air flow stirring mechanism for stirring, compressed air in the air source enters the balloon through the connecting pipe and is ejected outward through the air injection holes on the balloon, so that the water and fertilizer in the tank are stirred and mixed under the disturbance of the gas. The air flow stirring mechanism can prevent materials from depositing in the tank body.

[0004] The above structure of arranging air injection holes on the balloon can form upward air injection holes that are vertically upward or inclined upward and downward air injection holes that are vertically downward or inclined downward on the balloon. The upward air injection holes can eject upward air currents to make the water and fertilizer solution roll, achieving the effect of water and fertilizer mixing. The downward air injection holes can eject downward air currents, which can impact the fertilizers at the bottom of the water and fertilizer mixing tank to avoid fertilizer deposition. However, since the air injection holes are arranged on the balloon, in order to avoid the balloon occupying too much space inside the water and fertilizer mixing tank, the size of the balloon will be relatively small. Correspondingly, the balloon is relatively far from the inner side wall of the water and fertilizer mixing tank. The downward air injection holes on the balloon only have a better stirring effect on the materials at the central position of the bottom inside the water and fertilizer mixing tank, but have a poor stirring effect on the sediments near the inner side wall of the water and fertilizer mixing tank. After the fertilizer mixing device is used for a long time, sediments are still likely to appear in the area far from the balloon at the bottom of the water and fertilizer mixing tank, blocking the discharge port. Content of the Utility Model

[0005] The object of the present utility model is to provide an air flow stirring fertilizer mixing device, so as to solve the problem that the air flow stirring mechanism with air injection holes arranged by using air injection balloons in the current fertilizer mixing device is easily restricted by the size of the air injection balloons, resulting in the air injection holes being far from the inner wall of the water and fertilizer mixing tank, and further affecting the stirring effect of the sediment in the area near the inner wall on the bottom of the water and fertilizer mixing tank.

[0006] The technical solution of the air flow stirring fertilizer mixing device of the present utility model is as follows:

[0007] An air flow stirring fertilizer mixing device includes an air flow stirring fertilizer mixing pipe rack. The air flow stirring fertilizer mixing pipe rack includes a bottom stirring air injection branch pipe arranged at the inner bottom of the water and fertilizer mixing tank during use. The bottom stirring air injection branch pipe extends along the bottom of the water and fertilizer mixing tank. The air flow stirring fertilizer mixing pipe rack is provided with an air flow channel. The air flow channel includes an upward air injection hole arranged on the bottom stirring air injection branch pipe for upward air injection and a downward air injection hole for injecting air onto the bottom of the water and fertilizer mixing tank.

[0008] Further, there are at least three bottom stirring air injection branch pipes, and each bottom stirring air injection branch pipe is distributed at intervals around the center line of the water and fertilizer mixing tank.

[0009] Further, the air flow stirring fertilizer mixing pipe rack includes a main pipe arranged vertically, and one end of each bottom stirring air injection branch pipe close to each other is connected to the lower end of the main pipe.

[0010] Further, the upper end of the main pipe is provided with a part for connecting to the top of the water and fertilizer mixing tank.

[0011] Further, at least two layers of air injection branch pipes are arranged at intervals in the vertical direction on the main pipe, and the lowermost layer of air injection branch pipes constitutes the bottom stirring air injection branch pipes.

[0012] Further, the bottom of the water and fertilizer mixing tank is a flat bottom structure, and the bottom stirring air injection branch pipes are horizontally arranged.

[0013] Further, the upward air injection holes are inclined upward, and the downward air injection holes are inclined downward.

[0014] Further, there are multiple downward air injection holes, which are arranged at intervals along the axial direction of the bottom stirring air injection branch pipe. The downward air injection holes are inclined downward, and the central line of the downward air injection hole forms an angle of 45° with the vertical plane passing through the axis of the bottom stirring air injection branch pipe, and the central lines of any two adjacent downward air injection holes are perpendicular to each other.

[0015] Further, there are two rows of upward air injection holes on the bottom stirring air injection branch pipe. Each upward air injection hole in the same row is arranged at intervals along the axial direction of the bottom stirring air injection branch pipe. The upward air injection holes in different rows are arranged at intervals in the circumferential direction of the bottom stirring air injection branch pipe. The upward air injection holes are inclined upward. The two rows of upward air injection holes are symmetrically arranged with respect to the vertical plane passing through the axis of the bottom stirring air injection branch pipe, and the central lines of the two rows of upward air injection holes are perpendicular to each other.

[0016] Furthermore, the bottom of the water and fertilizer mixing tank of the air flow stirring fertilizer mixing device is a flat bottom structure, and a residual liquid discharge port is provided at the bottom of the tank.

[0017] Beneficial effects of the air flow stirring fertilizer mixing device of the present utility model: The present utility model makes element changes on the basis of the air flow stirring mechanism for water and fertilizer mixing in the prior art. By providing a bottom stirring air jet branch pipe extending along the bottom of the water and fertilizer mixing tank on the air flow stirring fertilizer mixing pipe rack of the air flow stirring fertilizer mixing device, and providing upward air jet holes and downward air jet holes for the air flow channel on the bottom stirring air jet branch pipe, the upward air jet holes can eject an upward air flow to make the water and fertilizer solution tumble, achieving the effect of water and fertilizer mixing, and the downward air jet holes can eject a downward air flow to impact the fertilizer on the bottom of the water and fertilizer mixing tank, avoiding fertilizer deposition. Since it is a bottom stirring air jet branch pipe extending inside the bottom of the water and fertilizer mixing tank, while satisfying the setting of upward air jet holes and downward air jet holes, the bottom stirring air jet branch pipe can extend to a position close to the inner side wall of the water and fertilizer mixing tank without occupying too much height space inside the tank. Furthermore, the downward air jet holes on the bottom stirring air jet branch pipe can be close to the inner side wall of the water and fertilizer mixing tank, impacting the materials close to the inner side wall on the bottom of the water and fertilizer mixing tank, and are not easily limited by the size of the bottom stirring air jet branch pipe to make the air jet holes far from the inner side wall of the water and fertilizer mixing tank, which is beneficial to meeting the stirring effect of materials in different areas on the bottom of the water and fertilizer mixing tank to avoid material deposition. Description of the Drawings

[0018] Figure 1 It is a schematic diagram when the air flow stirring fertilizer mixing device of the embodiment of the present utility model is in use;

[0019] Figure 2 is Figure 1 a schematic diagram of the air flow stirring fertilizer mixing pipe rack in

[0020] In the figure: 1. Main irrigation water supply pipe; 2. Integrated machine water supply branch pipe; 3. Intelligent water and fertilizer integrated machine; 4. Mixing tank water supply branch pipe; 5. Water and fertilizer mixing tank; 6. Mixing tank fertilizer discharge pipe; 7. Integrated machine fertilizer supply pipe; 8. Residual liquid discharge pipe; 9. Blower; 10. Air inlet pipe; 11. Air inlet valve; 12. Air flow stirring fertilizer mixing pipe rack; 121. Main pipe; 122. Adapter; 123. Bottom stirring air jet branch pipe; 124. Upward air jet hole; 125. Downward air jet hole. Detailed Embodiment

[0021] The air-flow stirring fertilizer mixing device of the present utility model is provided with a bottom-stirring air jet branch pipe. While satisfying the setting of upward and downward air jet holes, the bottom-stirring air jet branch pipe can extend to a position close to the inner side wall of the water-fertilizer mixing tank without occupying too much height space inside the tank. Furthermore, the downward air jet holes on the bottom-stirring air jet branch pipe can be close to the inner side wall of the water-fertilizer mixing tank, impacting the materials near the inner side wall on the bottom of the water-fertilizer mixing tank, and it is not easily restricted by the size of the bottom-stirring air jet branch pipe to make the air jet holes far from the inner side wall of the water-fertilizer mixing tank, which is beneficial to achieving the stirring effect on materials in different areas on the bottom of the water-fertilizer mixing tank to avoid material deposition.

[0022] Embodiment of the air-flow stirring fertilizer mixing device of the present utility model:

[0023] The air-flow stirring fertilizer mixing device in this embodiment is used in a water-fertilizer integration system, as Figure 1 , Figure 2 shown. The water-fertilizer integration system includes an irrigation water supply main pipe 1, an intelligent water-fertilizer integrated machine 3, and an air-flow stirring fertilizer mixing device, which are connected through corresponding pipelines. The intelligent water-fertilizer integrated machine 3 is an existing product. The air-flow stirring fertilizer mixing device includes a water-fertilizer mixing tank 5 for mixing water and fertilizer. The irrigation water supply main pipe 1 can supply water from the water source to the field. An integrated machine water supply branch pipe 2 connected to the intelligent water-fertilizer integrated machine 3 is provided on the irrigation water supply main pipe 1 to supply water to the intelligent water-fertilizer integrated machine 3. A mixing tank water supply branch pipe 4 connected to the water-fertilizer mixing tank 5 is provided on the integrated machine water supply branch pipe 2 to supply water to the water-fertilizer mixing tank 5 so that the soluble solid fertilizer in the water-fertilizer mixing tank 5 can be mixed with water. A mixing tank fertilizer outlet pipe 6 is provided at the bottom of the water-fertilizer mixing tank 5. After the water and fertilizer are mixed well, they can enter the intelligent water-fertilizer integrated machine 3 through the mixing tank fertilizer outlet pipe 6 and be sent to the irrigation water supply main pipe 1 through the integrated machine fertilizer supply pipe 7 of the intelligent water-fertilizer integrated machine 3 to provide water, nutrients to crops regularly, quantitatively and proportionally.

[0024] The air-flow stirring fertilizer mixing device includes an air-flow stirring mechanism supporting the water-fertilizer mixing tank 5. The air-flow stirring mechanism includes an air-flow stirring fertilizer mixing pipe rack 12, a blower 9, and an air inlet pipe 10. An air flow channel is provided on the air-flow stirring fertilizer mixing pipe rack 12. The air flow channel is communicated with the air inlet pipe 10, and the air inlet pipe 10 is connected to the blower 9. Through the blower 9, air enters the air flow channel of the air-flow stirring fertilizer mixing pipe rack 12 through the air inlet pipe 10 and is ejected from the air jet holes of the air flow channel. The ejected air flow stirs the water-fertilizer solution in the water-fertilizer mixing tank 5 to facilitate uniform mixing of water and fertilizer.

[0025] The water and fertilizer mixing tank 5 is cylindrical. The water and fertilizer mixing tank 5 includes a main tank body and a tank cover. The main tank body has a bottom wall, a top wall, and a circumferential side wall. The tank cover is arranged at the opening on the top wall of the main tank body. The circumferential inner side wall of the main tank body constitutes the inner side wall of the water and fertilizer mixing tank 5. The upper top wall of the main tank body constitutes the tank top of the water and fertilizer mixing tank 5. The lower bottom wall of the main tank body constitutes the tank bottom of the water and fertilizer mixing tank 5. The tank bottom is of a flat bottom structure.

[0026] The air flow stirring fertilizer mixing pipe rack 12 includes a main pipe 121 and a bottom stirring air jet branch pipe 123. The bottom stirring air jet branch pipe 123 is arranged at the inner bottom of the water and fertilizer mixing tank 5. The bottom stirring air jet branch pipe 123 extends along the tank bottom of the water and fertilizer mixing tank 5. The inner surface of the tank bottom of the water and fertilizer mixing tank 5 is flat. The bottom stirring air jet branch pipe 123 is horizontally arranged, and the axis of the bottom stirring air jet branch pipe 123 is parallel to the inner surface of the tank bottom. The air flow channel on the air flow stirring fertilizer mixing pipe rack 12 includes an upward air jet hole 124 provided on the bottom stirring air jet branch pipe 123 for jetting upward air and a downward air jet hole 125 for jetting air onto the tank bottom of the water and fertilizer mixing tank 5. The upward air jet hole 124 can jet an upward air flow to make the water and fertilizer solution tumble to form a vortex, achieving the effect of water and fertilizer mixing. The downward air jet hole 125 can jet a downward air flow to impact the fertilizer on the tank bottom of the water and fertilizer mixing tank 5, avoiding fertilizer deposition. The bottom stirring air jet branch pipe 123 extends horizontally. Without occupying too much height space inside the tank, it can extend to a position close to the inner side wall of the water and fertilizer mixing tank 5. Thus, the downward air jet hole 125 on the bottom stirring air jet branch pipe 123 can be close to the inner side wall of the water and fertilizer mixing tank 5, facilitating the impact on the materials near the inner side wall on the tank bottom of the water and fertilizer mixing tank 5, and being beneficial to meeting the stirring effect on the materials in different areas on the tank bottom of the water and fertilizer mixing tank 5 to avoid material deposition.

[0027] There are multiple bottom stirring air jet branch pipes 123, and each bottom stirring air jet branch pipe 123 is radially distributed, which is convenient for layout, saves space, and is beneficial to ensuring the stirring effect. In this embodiment, there are four bottom stirring air jet branch pipes 123, and the four bottom stirring air jet branch pipes 123 are arranged in a "cross" shape. Each bottom stirring air jet branch pipe 123 is spaced apart around the center line of the water and fertilizer mixing tank 5. The center line of the water and fertilizer mixing tank 5 extends in the up and down direction. Each bottom stirring air jet branch pipe 123 has an end close to each other and an end far from each other. The bottom stirring air jet branch pipe 123 is very close to both the inner side wall and the tank bottom of the water and fertilizer mixing tank 5, about 10 cm, so as to ensure the stirring effect. The main pipe 121 of the air flow stirring fertilizer mixing pipe rack 12 is vertically arranged. The ends of each bottom stirring air jet branch pipe 123 close to each other are all connected to the lower end of the main pipe 121. Each bottom stirring air jet branch pipe 123 is distributed centered on the main pipe 121, facilitating the uniform delivery of air flow to each bottom stirring air jet branch pipe 123 through the main pipe 121.

[0028] A adapter joint 122 is provided at the lower end of the main pipe 121. The adapter joint 122 is a five-way joint, and each bottom-stirring air jet branch pipe 123 is connected to the adapter joint 122. The upward air jet holes 124 and the downward air jet holes 125 are arranged on the pipe wall of the bottom-stirring air jet branch pipe 123. The air jet holes are through holes, and plugs are provided at the mutually remote ends of each bottom-stirring air jet branch pipe 123. The lumen of the main pipe 121, the lumens of each bottom-stirring air jet branch pipe 123, and the upward air jet holes 124 and the downward air jet holes 125 provided on each bottom-stirring air jet branch pipe 123 together are used to form an air flow channel of the air flow stirring fertilizer mixing pipe rack 12. The main pipe 121 is located at the center of the water-fertilizer mixing tank 5, and the bottom-stirring air jet branch pipes 123 extend along the radial direction of the water-fertilizer mixing tank 5, so as to facilitate stirring the materials at the bottom of the water-fertilizer mixing tank 5 by using the air jet holes on the parts of the bottom-stirring air jet branch pipes 123 close to the inner side wall of the water-fertilizer mixing tank 5. The downward air flow can scour the bottom of the water-fertilizer mixing tank 5, avoid residual fertilizer at the bottom of the water-fertilizer mixing tank 5, achieve the effect of cleaning the water-fertilizer mixing tank 5, and improve the utilization rate of water and fertilizer.

[0029] A through-wall joint is provided at the center of the top of the water-fertilizer mixing tank 5. The upper end of the through-wall joint is connected to the air inlet pipe 10, and the lower end is connected to the upper end of the main pipe 121. Both the air inlet pipe 10 and the air flow stirring fertilizer mixing pipe rack 12 are made of corrosion-resistant and high-strength UPVC materials to ensure stability and durability under long-term use. The part of the upper end of the main pipe 121 connected to the through-wall joint constitutes the part connected to the top of the water-fertilizer mixing tank 5, so that the air flow can enter at the top of the water-fertilizer mixing tank 5, and it is not necessary to consider the sealing of the solution in the water-fertilizer mixing tank 5 at the through-wall joint, which is beneficial to simplifying the structure. An air inlet valve 11 is provided at the part of the air inlet pipe 10 close to the top of the water-fertilizer mixing tank 5. When the air inlet valve 11 is opened, the air flow can be conveyed to the air flow stirring fertilizer mixing pipe rack 12 through the blower 9. The blower 9 can adopt a low-power and low-noise vortex blower. The blower 9 and the air flow stirring fertilizer mixing pipe rack 12 convert the air power into stirring force to realize the uniform mixing of the fertilizer solution. The power supply of the blower 9 is connected to the intelligent water-fertilizer integrated machine 3, and the start and stop of the blower 9 can be controlled by operating the touch screen of the intelligent water-fertilizer integrated machine 3 or the mobile phone APP.

[0030] The upward air nozzles 124 are inclined upward, which is beneficial to stirring the water-fertilizer solution and making the water-fertilizer solution roll in the water-fertilizer mixing tank 5. The downward air nozzles 125 are inclined downward, which is beneficial to ensuring the stirring range of the bottom of the water-fertilizer mixing tank 5. The aperture of the air nozzles is 5 mm. There are two rows of upward air nozzles 124 on the same bottom-stirring air branch pipe 123. The upward air nozzles 124 in the same row are arranged at intervals along the axial direction of the bottom-stirring air branch pipe 123. The upward air nozzles 124 in different rows are arranged at intervals in the circumferential direction of the bottom-stirring air branch pipe 123. The two rows of upward air nozzles 124 are symmetrically arranged with respect to the vertical plane passing through the axis of the bottom-stirring air branch pipe 123. The center lines of the two rows of upward air nozzles 124 are perpendicular to each other. Although the two rows of upward air nozzles 124 on the same bottom-stirring air branch pipe 123 are both inclined upward, they are inclined in different directions, and airflows can be ejected in different directions, which is beneficial to improving the stirring effect. There is one row of downward air nozzles 125 on the same bottom-stirring air branch pipe 123. The downward air nozzles 125 in the same row are arranged at intervals along the axial direction of the bottom-stirring air branch pipe 123. The air nozzles in each row are arranged at intervals in the circumferential direction of the bottom-stirring air branch pipe 123. Each row is evenly provided with a plurality of air nozzles, and corresponding air nozzles are provided at the ends of the bottom-stirring air branch pipes 123 away from each other, which is beneficial to stirring the materials in different areas of the bottom of the water-fertilizer mixing tank 5. The angle between the center line of the downward air nozzle 125 and the vertical plane passing through the axis of the bottom-stirring air branch pipe 123 is 45°, and the center lines of any two adjacent downward air nozzles 125 are perpendicular to each other. Although the downward air nozzles 125 are all inclined upward, they are inclined in different directions, and airflows can be ejected in different directions, which is beneficial to covering a larger area of the bottom of the water-fertilizer mixing tank 5 with the ejected airflows.

[0031] A mixing liquid outlet is provided at a position close to the bottom of the inner wall of the water-fertilizer mixing tank 5, and the mixing liquid outlet is connected to the fertilizer outlet pipe 6 of the mixing tank. A residual liquid discharge port is provided at the center of the bottom of the water-fertilizer mixing tank 5, and the residual liquid discharge port is connected to the residual liquid discharge pipe 8. Through the stirring action of each bottom-stirring air branch pipe 123 on various areas of the bottom of the water-fertilizer mixing tank 5, the deposition of materials at the bottom of the tank can be avoided, and further, the blockage of the mixing liquid outlet and the residual liquid discharge port can be avoided, which is beneficial to long-term use.

[0032] In other embodiments, at least two layers of air branch pipes can be provided at intervals in the up-down direction on the main pipe, and corresponding air nozzles are provided on the air branch pipes. Among them, the lowermost layer of air branch pipes constitutes the bottom-stirring air branch pipes. The use of air branch pipes with different heights is beneficial to improving the stirring effect.

[0033] In other embodiments, the number of bottom-stirring air branch pipes can also be set to three.

[0034] In other embodiments, the bottom-stirring air branch pipe can also be a spiral coiled pipe. One end of the spiral coiled pipe is connected to the main pipe, and the other end extends to a position close to the inner wall of the water-fertilizer mixing tank.

[0035] In other embodiments, the main pipe can also be horizontally arranged. One end of the main pipe is connected to the bottom-stirring air jet branch pipe, and the other end is connected to the through-wall joint on the inner wall of the water-fertilizer mixing tank. Correspondingly, the air inlet pipe is connected to the through-wall joint.

[0036] In other embodiments, air jet holes can also be provided on the main pipe.

[0037] In other embodiments, the upward air jet holes can also be arranged in only one row, and the upward air jet holes are vertically upward.

[0038] In other embodiments, the downward air jet holes can also be vertically downward.

[0039] In other embodiments, the bottom of the water-fertilizer mixing tank can also be a conical bottom structure, and the inner surface of the bottom is a conical surface. At this time, the bottom-stirring air jet branch pipe can be arranged obliquely relative to the horizontal plane, and the bottom-stirring air jet branch pipe is parallel to the generatrix of the conical surface, so as to ensure a better air jet effect on the bottom of the water-fertilizer mixing tank.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still make modifications to the technical solutions recorded in the foregoing embodiments without creative efforts, or make equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air flow stirring and fertilizer mixing device, characterized in that It includes an air-flow stirring fertilizer mixing pipe rack. The air-flow stirring fertilizer mixing pipe rack includes a bottom stirring air jet branch pipe which is arranged at the inner bottom of the water-fertilizer mixing tank during use and extends along the bottom of the water-fertilizer mixing tank. The air-flow stirring fertilizer mixing pipe rack is provided with an air-flow channel. The air-flow channel includes an upward air jet hole arranged on the bottom stirring air jet branch pipe for jetting air upward and a downward air jet hole for jetting air to the bottom of the water-fertilizer mixing tank.

2. The airflow stirring and fertilizer mixing device according to claim 1, characterized in that, There are at least three bottom stirring air jet branch pipes, and each bottom stirring air jet branch pipe is distributed at intervals around the center line of the water-fertilizer mixing tank.

3. The airflow stirring fertilizer mixing device according to claim 2, characterized in that, The air-flow stirring fertilizer mixing pipe rack includes a main pipe arranged vertically, and one end of each bottom stirring air jet branch pipe close to each other is connected to the lower end of the main pipe.

4. The air flow stirring fertilizer mixing device according to claim 3, characterized in that, The upper end of the main pipe is provided with a part for connecting to the top of the water-fertilizer mixing tank.

5. The air flow stirring fertilizer mixing device according to claim 3 or 4, characterized in that, At least two layers of air jet branch pipes are arranged at intervals along the up-down direction on the main pipe, and the lowermost layer of air jet branch pipes constitutes the bottom stirring air jet branch pipe.

6. The air flow stirring and fertilizer mixing device according to any one of claims 1-4, characterized in that, The bottom of the water-fertilizer mixing tank is of a flat-bottom structure, and the bottom stirring air jet branch pipe is horizontally arranged.

7. The airflow stirring fertilizer mixing device according to any one of claims 1-4, characterized in that, The upward air jet hole is inclined upward, and the downward air jet hole is inclined downward.

8. The airflow stirring and fertilizer mixing device according to any one of claims 1-4, characterized in that, There are multiple downward air jet holes which are arranged at intervals along the axis of the bottom stirring air jet branch pipe. The downward air jet hole is inclined downward, and the central line of the downward air jet hole forms an angle of 45° with the vertical plane passing through the axis of the bottom stirring air jet branch pipe, and the central lines of any two adjacent downward air jet holes are perpendicular to each other.

9. The air flow stirring fertilizer mixing device according to any one of claims 1-4, characterized in that, There are two rows of upward air jet holes on the bottom stirring air jet branch pipe. Each upward air jet hole in the same row is arranged at intervals along the axis of the bottom stirring air jet branch pipe. The upward air jet holes in different rows are arranged at intervals in the circumferential direction of the bottom stirring air jet branch pipe. The upward air jet hole is inclined upward. The two rows of upward air jet holes are symmetrically arranged with respect to the vertical plane passing through the axis of the bottom stirring air jet branch pipe, and the central lines of the two rows of upward air jet holes are perpendicular to each other.

10. The airflow stirring fertilizer mixing device according to any one of claims 1-4, characterized in that, The bottom of the water-fertilizer mixing tank of the air-flow stirring fertilizer mixing device is of a flat-bottom structure, and a residual liquid discharge port is provided at the bottom.

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