Anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali soil rice fertilization

Abstract

The utility model belongs to the technical field of agricultural machinery, and particularly relates to an anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali soil rice fertilization, which comprises a storage tank, a liquid outlet pipe arranged at the tail part of the storage tank, a transition pipe arranged downwards in an arc shape at the tail end of the liquid outlet pipe, a gate valve arranged at the tail end of the transition pipe, and a Venturi injection pipe connected with the tail end of the gate valve, the venturi injection pipe comprises a contraction section, a throat pipe and a diffusion section which are connected in sequence, an air inlet pipe is arranged on the throat pipe, and a one-way air inlet valve is arranged on the air inlet pipe; and a guide plate is arranged below the Venturi injection pipe. The transition pipe is bent downwards in an arc shape, residual liquid in a pipeline can be thoroughly emptied by means of gravity, and blockage caused by residual accumulated liquid is avoided. Meanwhile, a venturi injection pipe is adopted as a spray head, and an air inlet pipe is arranged at the position of a throat pipe. The air inlet pipe can suck air to form gas-liquid two-phase flow, the pipe wall is scoured, organic matter deposition is prevented, and the spray head is effectively prevented from being blocked.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically relating to a liquid organic fertilizer spraying mechanism for preventing clogging when fertilizing rice in saline-alkali land. Background Technology

[0002] Saline-alkali soils are characterized by high salt content and strong alkalinity, with pH values ​​generally above 8.5. Their poor structure and permeability severely hinder rice growth. Salt-alkali stress leads to poor root development and impaired nutrient absorption, consequently reducing yield and quality. Therefore, organic fertilizers are necessary to improve the saline-alkali soil when planting rice in such conditions. When using liquid organic fertilizers to modify saline-alkali soils, it is common practice to increase organic matter components such as humic acid and biochar to improve soil aggregate structure and buffering capacity, reducing sodium ion toxicity. However, increasing these organic matter components increases the suspended solids content and viscosity of the liquid organic fertilizer, making it prone to deposition and clogging at the spray nozzle.

[0003] When the existing equipment sprays liquid organic fertilizer, the spraying mechanism is bent upwards, which makes it easy for residual liquid to remain in the spraying pipeline, further increasing the risk of pipeline blockage. Utility Model Content

[0004] The purpose of this invention is to provide a liquid organic fertilizer spraying mechanism for rice cultivation in saline-alkali land that prevents clogging. By setting up a spraying pipeline that is tilted downwards, residual liquid can be avoided to accumulate inside the pipeline. At the same time, by optimizing the nozzle structure, the nozzle has a self-cleaning function, which can prevent the formation of deposits inside the nozzle and reduce the risk of clogging.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A clog-resistant liquid organic fertilizer spraying mechanism for rice fertilization in saline-alkali land includes a storage tank, a liquid outlet pipe at the tail end of the storage tank, a downwardly arc-shaped transition pipe at the end of the liquid outlet pipe, a gate valve at the end of the transition pipe, and a Venturi spray pipe connected to the end of the gate valve. The Venturi spray pipe includes a converging section, a throat, and a diffuser section connected in sequence. An air inlet pipe is provided on the throat, and a one-way air inlet valve is provided on the air inlet pipe.

[0007] A guide plate is provided below the Venturi jet.

[0008] Preferably, the diameter of the transition tube gradually decreases from the connection point with the outlet tube towards the end.

[0009] Preferably, the one-way air intake valve is provided with an adjustment knob for adjusting the air intake volume of the one-way air intake valve.

[0010] Preferably, the guide plate has a protrusion, which is a flat, arc-shaped bulge and is located below the diffuser section.

[0011] Preferably, an adjustment assembly is provided below the guide plate, the adjustment assembly including a support frame, a motor, an eccentric wheel, and an angle positioning assembly;

[0012] The motor is mounted on the support frame, the eccentric wheel is mounted on the output shaft of the motor, and a connecting rod is provided between the eccentric wheel and the guide plate. The two ends of the connecting rod are rotatably connected to the eccentric wheel and the bottom of the guide plate, respectively. The angle positioning component is used to lock the guide plate to prevent the guide plate from rotating.

[0013] Preferably, the angle positioning assembly includes an angle positioning rod and a one-way bearing, wherein the inner ring of the one-way bearing is fixedly connected to the support frame, and the two ends of the angle positioning rod are rotatably connected to the outer ring of the one-way bearing and the guide plate, respectively.

[0014] The radius of the one-way bearing is equal to the eccentricity of the eccentric wheel.

[0015] Preferably, the storage tank is provided with a frame at the bottom, the support frame is fixedly connected to the frame, and the support frame is provided with reinforcing ribs.

[0016] Preferably, the air intake pipe is arranged along the tangential direction of the inner wall of the throat, so that the air intake direction of the air intake pipe is tangential to the inner wall of the throat.

[0017] The advantages of this utility model are:

[0018] The flue pipe of this invention is curved downwards, allowing it to completely drain residual liquid from the pipeline using gravity, thus preventing blockage caused by liquid accumulation. Simultaneously, this invention uses a Venturi jet nozzle as the spray head and incorporates an air inlet pipe at the throat position. The air inlet pipe draws in air to create a two-phase gas-liquid flow, flushing the pipe wall to prevent organic matter deposition and effectively avoiding nozzle blockage. Attached Figure Description

[0019] Figure 1 This is a structural diagram of a clog-resistant liquid organic fertilizer spraying mechanism for rice fertilization in saline-alkali land, as shown in Example 1.

[0020] Figure 2 This is a side view of a liquid organic fertilizer spraying mechanism for preventing clogging in saline-alkali land rice cultivation, as described in Example 1.

[0021] Figure 3 This is a structural diagram of the Chinese-language spray pipe of a liquid organic fertilizer spraying mechanism for preventing clogging in saline-alkali land rice fertilization, as shown in Example 1.

[0022] Figure 4This is a schematic diagram of the working principle of the Chinese-language spray pipe of a liquid organic fertilizer spraying mechanism for fertilizing rice in saline-alkali land in Example 1, which is designed to prevent clogging.

[0023] Figure 5 This is a structural diagram of the guide plate in an anti-clogging liquid organic fertilizer spraying mechanism for rice fertilization in saline-alkali land, as shown in Example 1.

[0024] Figure 6 This is a structural diagram of the regulating component in a liquid organic fertilizer spraying mechanism for preventing clogging in saline-alkali land rice fertilization, as described in Example 1.

[0025] Figure 7 This is a structural diagram of the angle positioning component in an anti-clogging liquid organic fertilizer spraying mechanism for rice fertilization in saline-alkali land, as described in Example 1.

[0026] Figure 8 This is a cross-sectional view of the throat of a liquid organic fertilizer spraying mechanism for preventing clogging in saline-alkali land rice fertilization, as shown in Example 2.

[0027] The image shows:

[0028] 100, Storage tank; 110, Discharge pipe; 200, Transition pipe; 300, Slide valve; 400, Venturi jet pipe; 410, Contraction section; 420, Throat; 421, Inlet pipe; 422, One-way inlet valve; 423, Adjustment knob; 430, Diffusion section; 500, Guide plate; 510, Protrusion; 520, Adjustment assembly; 521, Support frame; 522, Motor; 523, Eccentric wheel; 524, Connecting rod; 525, Reinforcing rib; 530, Angle positioning assembly; 531, Angle positioning rod; 532, One-way bearing; 600, Frame. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The embodiments of this utility model described and shown herein can be arranged and designed in various different configurations.

[0030] Example 1

[0031] This embodiment discloses a clog-resistant liquid organic fertilizer spraying mechanism for rice cultivation in saline-alkali land, such as... Figure 1 As shown, the system includes a storage tank 100, a liquid outlet pipe 110 at the rear of the storage tank 100, a transition pipe 200 at the end of the liquid outlet pipe 110, a gate valve 300 at the end of the transition pipe 200, and a Venturi spray pipe 400 connected to the end of the gate valve 300. Figure 2As shown, the transition pipe 200 bends downwards in an arc, and the entire pipeline is set at an angle downwards. After use, the liquid organic fertilizer can be completely discharged under gravity, avoiding the accumulation of liquid in the pipeline. The diameter of the transition pipe 200 gradually decreases from the connection with the outlet pipe 110 to the end.

[0032] like Figure 3 As shown, the Venturi jet 400 includes a converging section 410, a throat 420, and a diffuser section 430 connected in sequence. An air inlet pipe 421 is provided on the throat 420, and a one-way air inlet valve 422 is provided on the air inlet pipe 421. An adjusting knob 423 is provided on the one-way air inlet valve 422 to adjust the air intake volume. The one-way air inlet valve 422 with adjusting function is an existing product, and its specific structure will not be further described. Figure 4 As shown, when the liquid organic fertilizer enters the throat 420 through the contraction section 410, the flow velocity increases, creating negative pressure. Air is drawn in through the air inlet pipe 421 and thoroughly mixed with the liquid organic fertilizer within the throat, forming a gas-liquid two-phase flow. This turbulence enhances the scouring effect on the inner wall of the throat 420, effectively preventing organic fertilizer residue from clogging the system. Subsequently, the gas-liquid mixture enters the diffusion section 430, where the flow velocity decreases and the pressure rises, allowing it to be sprayed out in a stable state, thus ensuring uniform spraying of the liquid organic fertilizer.

[0033] A guide plate 500 is provided below the Venturi jet pipe 400. For example... Figure 2 and 5 As shown, the guide plate 500 has a protrusion 510, which is a flat, arc-shaped bulge located below the diffuser section 430. The liquid organic fertilizer sprayed from the venturi tube 400 collides with the surface of the protrusion 510 and then spreads outwards to form a fan-shaped spray area, effectively expanding the coverage area.

[0034] like Figure 5 and Figure 6 As shown, an adjustment assembly 520 is provided below the guide plate 500. The adjustment assembly 520 includes a support frame 521, a motor 522, an eccentric wheel 523, and an angle positioning assembly 530. The motor 522 is mounted on the support frame 521, and the eccentric wheel 523 is mounted on the output shaft of the motor 522. A connecting rod 524 is provided between the eccentric wheel 523 and the guide plate 500, with both ends of the connecting rod 524 rotatably connected to the eccentric wheel 523 and the bottom of the guide plate 500, respectively. Under the command of an external controller, the motor 522 drives the eccentric wheel 523 to rotate, which in turn drives the guide plate 500 to perform circular motion below the Venturi spray pipe 400 via the connecting rod 524, causing the position of the protrusion 510 to change dynamically, thereby adjusting the distribution pattern and coverage of the fan-shaped spray area.

[0035] The angle positioning component 530 is used to lock the guide plate 500 to prevent it from rotating. For example... Figure 7As shown, the angle positioning assembly 530 includes an angle positioning rod 531 and a one-way bearing 532. The inner ring of the one-way bearing 532 is fixedly connected to the support frame 521, and both ends of the angle positioning rod 532 are rotatably connected to the outer ring of the one-way bearing 532 and the guide plate 500, respectively. The radius of the one-way bearing 532 is equal to the eccentricity of the eccentric wheel 523. When the motor 522 drives the eccentric wheel 523 to rotate, the angle positioning rod 531 can perform circumferential motion along the outer ring of the one-way bearing 532 on one side of the guide plate 500, limiting and guiding the movement trajectory of the guide plate 500, and preventing the guide plate 500 from rotating when the eccentric wheel 523 rotates. At the same time, the one-way bearing 532 can prevent the angle positioning rod 531 from rotating in the opposite direction when the movement starts, ensuring that the guide plate 500 can perform circumferential motion in the set direction.

[0036] The storage tank 100 is equipped with a frame 600 at its bottom. For example... Figure 1 and Figure 6 As shown, the support frame 521 is fixedly connected to the vehicle frame 600, and the support frame 521 is provided with reinforcing ribs 525. The storage tank 100 and the vehicle frame 600 are also provided with a liquid organic fertilizer conveying assembly. The above conveying assembly is the same as the existing liquid fertilizer conveying assembly, and will not be described further here.

[0037] Example 2

[0038] This embodiment discloses a liquid organic fertilizer spraying mechanism for preventing clogging when fertilizing rice in saline-alkali land.

[0039] like Figure 8 As shown, in this embodiment, the air intake pipe 421 is arranged tangentially to the inner wall of the throat pipe 420, so that the air intake direction of the air intake pipe 421 is tangential to the inner wall of the throat pipe 420. Tangential air intake can generate spiral disturbances in the airflow within the throat pipe 420, enhance the turbulence effect along the inner wall of the throat pipe 420, further improve the scouring effect on the inner wall of the throat pipe 420, and effectively prevent organic fertilizer residue from clogging the pipe.

[0040] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A salt-alkali soil rice fertilization anti-clogging liquid organic fertilizer spraying mechanism comprising a storage tank, characterized in that, The storage tank tail part is provided with a liquid outlet pipe, the liquid outlet pipe tail end is provided with a downward arc-shaped transition pipe, the transition pipe tail end is provided with an insertion plate valve, the insertion plate valve tail end is connected with a Venturi jet pipe, the Venturi jet pipe comprises a contraction section, a throat pipe and a diffusion section connected in sequence, the throat pipe is provided with an air inlet pipe, the air inlet pipe is provided with a one-way air inlet valve; The Venturi jet pipe is provided below with a guide plate.

2. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 1, characterized in that, The transition pipe diameter gradually decreases from the connection with the liquid outlet pipe to the tail end.

3. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 1, characterized in that, The one-way air inlet valve is provided with an adjusting knob for adjusting the air inlet amount of the one-way air inlet valve.

4. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 1, characterized in that, The guide plate is provided with a convex part, the convex part is a flat arc-shaped protrusion, and the convex part is arranged below the diffusion section.

5. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 1, characterized in that, The guide plate is provided below with an adjusting assembly, the adjusting assembly comprises a support frame, a motor, an eccentric wheel and an angle positioning assembly; The motor is arranged on the support frame, the eccentric wheel is arranged on the output shaft of the motor, a connecting rod is arranged between the eccentric wheel and the guide plate, and the two ends of the connecting rod are rotatably connected with the eccentric wheel and the bottom of the guide plate respectively; the angle positioning assembly is used for locking the guide plate to avoid rotation of the guide plate.

6. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 5, characterized in that, The angle positioning assembly comprises an angle positioning rod and a one-way bearing, the inner ring of the one-way bearing is fixedly connected with the support frame, and the two ends of the angle positioning rod are rotatably connected with the outer ring of the one-way bearing and the guide plate respectively; The radius of the one-way bearing is equal to the eccentric distance of the eccentric wheel.

7. The anti-blocking liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 5, characterized in that, The storage tank bottom is provided with a vehicle frame, the support frame is fixedly connected with the vehicle frame, and the support frame is provided with a reinforcing rib.

8. The anti-clogging liquid organic fertilizer spraying mechanism for saline-alkali paddy field fertilization according to claim 1, characterized in that, The air inlet pipe is arranged along the tangent direction of the throat pipe inner wall, so that the air inlet direction of the air inlet pipe is tangent to the throat pipe inner wall.

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