Double-shaft spiral pneumatic collaborative fertilizer discharging device

Abstract

The utility model discloses a double -shaft spiral gas force collaborative fertilizer discharging device, including fertilizer box, still including shell one and stirring assembly, the inside of fertilizer box is provided with stirring assembly, the utility model has the rotation of spiral shaft no.

Description

Technical Field

[0001] This utility model relates to the technical field of fertilizer discharge devices, specifically to a dual-axis spiral pneumatic synergistic fertilizer discharge device. Background Technology

[0002] Fertilizer discharge devices are key equipment in agricultural machinery used to evenly discharge fertilizer into the soil according to a set amount. They are widely used in agricultural operations such as sowing, fertilization, and inter-row cultivation. Their core function is to realize the quantitative delivery and precise application of fertilizer, so as to improve fertilization efficiency, reduce fertilizer waste, and ensure a balanced supply of nutrients for crop growth.

[0003] According to the description in the patent application CN221634408U, a quantitative fertilizer dispensing device belongs to the field of agricultural machinery technology. It includes a fertilizer box, a fertilizer dispensing pipe, a movable insert plate, a swing guide rod mechanism, and a mounting frame. The fertilizer dispensing pipe below the fertilizer box has insertion holes on its side wall that mate with the upper and lower insert plates of the movable insert plate. The swing guide rod mechanism is connected to the side wall of the fertilizer dispensing pipe via its mounting frame. The swing guide rod mechanism includes a crank, a swing rod, and a transmission wheel. One end of the swing arm is slidably connected to a pin on the movable insert plate, and the other end of the swing arm is hinged to the bottom end of the mounting frame. One end of the crank is slidably connected to the middle of the swing arm, and the other end of the crank is connected to a crankshaft, which is fixed to the transmission wheel. The crank is also hinged to the top of the mounting frame. The transmission wheel is connected to a ground wheel, which drives the rotational motion. The crank drives the swing arm to swing back and forth, thereby moving the movable insert plate back and forth to control the fertilizer discharge. This device has a simple structure, reliable operation, and good quantitative fertilizer discharge effect.

[0004] Regarding the above description, the applicant believes the following problems exist: When the tractor moves, it drives the ground wheel to roll, which in turn drives the transmission wheel to rotate. The transmission wheel, through the crankshaft, drives the crank to rotate synchronously. When the crank rotates, one end slides within the central rectangular slide rail of the swing arm, pushing the swing arm to swing back and forth about the hinge point at the bottom of the mounting frame. When the swing arm swings, the upper rectangular slide rail at its top engages with the pin of the movable insert plate, causing the movable insert plate to move back and forth along the guide slide rail of the fertilizer discharge pipe. The upper and lower insert plates of the movable insert plate move alternately. When the swing arm reaches its left limit position, the upper insert plate opens and the lower insert plate closes, allowing fertilizer to enter the fertilizer discharge pipe from the fertilizer box for storage. When the swing arm reaches its right limit position, the upper insert plate closes and the lower insert plate opens, allowing fertilizer from the storage area to be discharged from the discharge port. The swing arm continues to swing with the crank, and the upper and lower insert plates alternately open and close, achieving continuous quantitative fertilizer discharge. However, the transmission wheel of this device... The ground wheel is directly connected, and the fertilizer discharge action depends entirely on the tractor's travel speed. When the ground wheel slips due to terrain undulations or speed fluctuations, the transmission wheel speed changes synchronously, causing the crank swing frequency to change. This results in unstable opening and closing frequency and stroke of the moving plate. When the tractor accelerates, the ground wheel speed increases, the crank rotation speed increases, the number of fertilizer discharges per unit time increases, and the amount of fertilizer discharged passively increases. When decelerating, the amount of fertilizer discharged decreases, resulting in low accuracy of fertilizer discharge. At the same time, this device discharges fertilizer by alternating opening and closing of the upper plate. This intermittent fertilization cycle causes the fertilizer to be discharged in clumps rather than continuously. The fertilizer distribution per unit length exhibits a "more-less-more" pulse fluctuation, which easily leads to localized composting or fertilizer interruption. This results in poor uniformity of fertilizer discharge. Furthermore, the fertilizer discharge rate of this device is not adjustable, making it unable to adapt to the different fertilizer requirements of different crops, thus resulting in poor adaptability of the device. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a dual-axis spiral pneumatic co-operated fertilizer discharge device. This device features precise fertilizer delivery via a conveying component, which improves the accuracy of fertilizer delivery. Users can adjust the fertilizer output by adjusting the rotation speed of motor one, thereby enhancing the adaptability of the device. The device also features a pneumatic component that blows fertilizer out of the discharge pipe, allowing fertilizer particles to be fully dispersed in the airflow and evenly carried to the target area, thus improving the uniformity of fertilizer discharge.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A dual-shaft helical pneumatic fertilizer discharge device includes a fertilizer tank, an outer shell, and a stirring assembly. A top cover is rotatably connected to the top of the fertilizer tank. The stirring assembly is installed inside the fertilizer tank. The outer shell is fixedly connected to one side of the fertilizer tank. A motor is fixedly connected to the outer shell. A gear is fixedly connected to the output end of the motor. Gear 1 meshes with one side of gear 2. A helical shaft 2 is fixedly connected to one side of gear 2. A helical shaft 1 is fixedly connected to one side of gear 1. A discharge pipe is fixedly connected to the bottom of the fertilizer tank. A pneumatic assembly for outputting airflow to the discharge pipe is installed outside the fertilizer tank.

[0008] In one optional embodiment, the pneumatic component includes a second outer shell, an air inlet pipe fixedly connected to one side of the second outer shell, a second motor fixedly connected to the inner side of the second outer shell, an impeller fixedly connected to the output end of the second motor, an air outlet pipe fixedly connected to the top of the second outer shell, a second connecting pipe fixedly connected to the top of the air outlet pipe, a diverter pipe fixedly connected to one side of the second connecting pipe, and a first connecting pipe fixedly connected between the diverter pipe and the discharge pipe.

[0009] In one optional embodiment, a through hole is provided on the outer casing 2, and the impeller is rotatably connected to the inside of the outer casing 2 through the through hole 1.

[0010] In one optional embodiment, a through hole two is provided on the outer casing one, and the gear two is rotatably connected to the inside of the outer casing one through the through hole two.

[0011] In one optional embodiment, the stirring assembly includes a housing three, a motor three fixedly connected to the outside of the housing three, a gear three fixedly connected to the output end of the motor three, a gear four meshing and driving on one side of the gear three, a stirring frame one fixedly connected to one side of the gear three, and a stirring frame two fixedly connected to one side of the gear four.

[0012] In one optional embodiment, a through hole is provided on the outer casing three, and the gear three is rotatably connected to the inside of the outer casing three through the through hole three.

[0013] In one optional embodiment, a through hole four is provided on the fertilizer box, and the stirring rack two is rotatably connected to the inside of the fertilizer box through the through hole four.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. Install this device on a tractor. Open the top cover to input fertilizer into the fertilizer bin. Then, start the mixing assembly to mix the fertilizer. Next, start motor one to drive gear two to rotate, which in turn drives screw shaft two to rotate. Gear two then drives gear one to rotate screw shaft one, causing screw shaft one to rotate. This precise interaction between screw shaft one and screw shaft two moves the fertilizer in the fertilizer bin, transporting it to the discharge pipe. This allows for precise fertilizer delivery, improving the accuracy of fertilizer feeding. Users can adjust the fertilizer output by adjusting the rotation speed of motor one, thus enhancing the device's adaptability.

[0016] 2. Simultaneously, start motor two to drive the impeller to rotate. The rotating impeller carries the airflow into connecting pipe two through the air inlet pipe. Then the airflow enters connecting pipe one through the split pipe, and then enters the discharge pipe through connecting pipe one, thereby blowing the fertilizer out of the discharge pipe. This allows the fertilizer particles to be fully dispersed in the airflow, and the airflow carries the fertilizer particles evenly to the target area, which helps to improve the uniformity of fertilizer discharge of this device. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall front structure of a dual-axis spiral pneumatic co-operated fertilizer discharge device;

[0018] Figure 2 A schematic diagram of the overall rear structure of a dual-axis spiral pneumatic co-operated fertilizer discharge device;

[0019] Figure 3 This is a schematic diagram of the overall internal structure of a dual-axis spiral pneumatic co-operated fertilizer discharge device.

[0020] Figure 4 A schematic diagram of the conveying component of a dual-shaft spiral pneumatic co-operated fertilizer discharge device;

[0021] Figure 5 A schematic diagram of the pneumatic component structure of a dual-axis spiral pneumatic co-operated fertilizer discharge device;

[0022] Figure 6 This is a schematic diagram of the mixing component of a dual-axis spiral pneumatic synergistic fertilizer discharge device.

[0023] In the diagram: 1. Fertilizer bin; 2. Top cover; 301. Outer shell 1; 302. Motor 1; 303. Discharge pipe; 304. Diverter pipe; 305. Connecting pipe 1; 306. Outer shell 2; 307. Connecting pipe 2; 308. Gear 1; 309. Gear 2; 310. Spiral shaft 1; 311. Spiral shaft 2; 312. Air outlet pipe; 313. Motor 2; 314. Impeller; 315. Air inlet pipe; 401. Outer shell 3; 402. Motor 3; 403. Gear 3; 404. Gear 4; 405. Mixing rack 1; 406. Mixing rack 2. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are all commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0025] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0028] Throughout the long history of agricultural production, fertilization, as a crucial link in ensuring crop growth, has seen its techniques continuously innovate with social development. Fertilizer application devices, as the core equipment in fertilization operations, have consistently evolved to improve fertilization efficiency, accuracy, and adaptability. From traditional manual sowing to modern intelligent equipment, each breakthrough in fertilizer application technology profoundly reflects the close connection between agricultural production needs and technological progress.

[0029] In early agricultural production, fertilization was primarily done manually. Farmers relied on experience to judge the amount of fertilizer and the area to be spread, which was not only extremely labor-intensive but also made it difficult to ensure uniform fertilization. While this extensive fertilization method could meet basic needs in small plots of land and for low-yield crops, its limitations became increasingly apparent with the development of large-scale agriculture and the promotion of high-yield crops. Since the 20th century, with the rise of the machinery industry, agricultural mechanization has become a development trend, and fertilizer application devices, as an important component of agricultural machinery, have begun to be researched and applied.

[0030] Early mechanized fertilizer dispensing devices were primarily simple mechanical structures, such as grooved wheel fertilizer dispensers. These dispensers used the rotation of a grooved wheel to expel fertilizer; their simple structure and low manufacturing cost made them the mainstream choice for small and medium-sized agricultural machinery for a long time. However, grooved wheel fertilizer dispensers are quite sensitive to the physical properties of fertilizers. When fertilizer particles are uneven in size, have high moisture content, or are clumping, problems such as unstable dispensing volume and blockages can easily occur. Especially during the application of organic fertilizers, due to their high viscosity and complex composition, the dispensing effect of grooved wheel fertilizer dispensers is often unsatisfactory.

[0031] The emergence of spiral fertilizer dispensers has improved this situation to some extent. It utilizes the rotation of spiral blades to propel fertilizer forward and discharge it, providing forced discharge and reducing the probability of fertilizer runoff and clogging, making it suitable for conveying granular fertilizers. However, single-shaft spiral fertilizer dispensers still face problems such as fertilizer adhesion to the spiral blades and insufficient uniformity of discharge when dealing with highly viscous and easily agglomerated fertilizers. In agricultural production, fertilizer types are becoming increasingly diversified, including traditional chemical fertilizers as well as large quantities of organic and compound fertilizers. Single-structure fertilizer dispensers are insufficient to meet the discharge needs of different fertilizers. Furthermore, with the advent of precision agriculture, the requirements for precise control and uniformity of fertilizer discharge are becoming increasingly stringent, and the performance of traditional fertilizer dispensers can no longer meet the needs of modern agricultural development.

[0032] Against this backdrop, the dual-shaft spiral fertilizer discharge device emerged. Its development stemmed from improvements to the shortcomings of traditional single-shaft spiral fertilizer dischargers. When conveying fertilizer, the single-shaft spiral, due to the driving force of a single spiral blade, is prone to localized accumulation and slippage, resulting in large discharge pulsations and reduced uniformity. Especially when handling moist, highly viscous organic fertilizers, the fertilizer easily adheres to the spiral blades and the inner wall of the casing, causing unstable discharge volume and even clogging the discharge channel.

[0033] The twin-screw fertilizer discharging device effectively overcomes the shortcomings of single-screw systems by utilizing two parallel spiral shafts working in tandem. Depending on the specific operational requirements, the twin-screw system can rotate in the same or opposite directions. When the two spiral shafts rotate in the same direction, the fertilizer moves axially under the combined propulsion of the spiral blades. The interaction between the two shafts reduces fertilizer adhesion to the casing, improving the smoothness of fertilizer transport, making it particularly suitable for long-distance transport of highly viscous fertilizers. Conversely, the twin-screw system utilizes the shearing and compressive forces between the two shafts to break up clumps of fertilizer, while simultaneously mixing the fertilizer during transport, meeting the requirements for the mixed application of organic and chemical fertilizers.

[0034] The phase difference design of the dual-screw system further enhances the uniformity of fertilizer application. By rationally setting the phase relationship between the two screw shafts, such as using a 180° phase difference, the fertilizer application pulsations of the two shafts can cancel each other out, significantly reducing the fluctuation of instantaneous fertilizer application. In practical applications, the coefficient of variation of fertilizer application uniformity of the dual-screw fertilizer application device can be controlled at a low level, greatly improving the accuracy of fertilization. With the increasing emphasis on organic fertilizers in agriculture, the dual-screw fertilizer application device is gradually being widely used in agricultural machinery due to its good adaptability to complex fertilizers.

[0035] Meanwhile, the development of pneumatic fertilizer dispensing devices has also provided new solutions for fertilizer dispensing technology. Although mechanical fertilizer dispensing devices have been continuously improved in structure and performance, they still have limitations in long-distance conveying, precise control, and adaptation to special fertilizer types. For example, in large-scale, wide-span fertilizer applicators, mechanical conveying makes it difficult to achieve uniform fertilizer distribution; for powdered fertilizers, mechanical dispensing is prone to dust generation and waste; and in variable-rate fertilization operations, the adjustment response speed of mechanical structures is slow, making it difficult to meet the needs of real-time, precise control.

[0036] Pneumatic fertilizer discharge devices utilize airflow as the driving force for fertilizer transport, achieving fertilizer adsorption, transport, and discharge through air pressure differences. Their working principle is based on fluid mechanics; a fan generates airflow at a certain pressure and velocity, creating a stable airflow field within the pipeline that drives the movement of fertilizer particles. Pneumatic fertilizer discharge devices enable long-distance, low-damage fertilizer transport, reducing fertilizer breakage and residue during transport. For fertilizers of different particle sizes and densities, stable transport can be achieved by adjusting airflow parameters such as wind speed and air pressure, improving the device's adaptability to diverse fertilizers.

[0037] Driven by the development of precision agriculture, pneumatic fertilizer dispensing devices, combined with intelligent control technology, have achieved real-time adjustment of fertilizer dispensing volume. By detecting operational parameters such as travel speed and soil fertility through sensors, the control system can adjust airflow parameters and the size of the fertilizer outlet in a timely manner, enabling variable-rate fertilization. For example, in orchard fertilization, based on the growth status and canopy extent of the fruit trees, the pneumatic fertilizer dispensing device can precisely control the fertilizer application range and amount, improving fertilizer utilization. Furthermore, the pneumatic fertilizer dispensing device effectively reduces direct contact between fertilizer and mechanical parts, minimizing mechanical wear and extending equipment lifespan.

[0038] However, early pneumatic fertilizer discharge devices also had some problems. On the one hand, airflow transport required a lot of energy, resulting in relatively high operating costs; on the other hand, for fertilizers with high moisture content or high viscosity, sediment and blockage were easily formed in the pipes, affecting the stability of fertilizer discharge. To overcome these shortcomings, researchers have continuously optimized the structural design of the pneumatic system, such as using streamlined pipes and setting up anti-blockage devices. At the same time, they have combined this with intelligent control technology to monitor the airflow status in real time and adjust parameters in a timely manner, thus improving the reliability and economy of the pneumatic fertilizer discharge device.

[0039] The development of twin-screw fertilizer dispensing devices and pneumatic fertilizer dispensing devices is aimed at addressing the ever-changing fertilization needs in agricultural production. With the increasing trend towards large-scale, precision, and green agriculture, single fertilizer dispensing technologies are no longer sufficient to meet complex operational requirements. The synergistic technology combining the mechanical forced conveying of twin-screw devices with pneumatically assisted conveying has become a new direction for fertilizer dispensing device development. This synergistic approach fully leverages the advantages of both technologies: utilizing the crushing and stable conveying capabilities of the twin-screw to handle complex fertilizers, while leveraging the precise control and anti-clogging functions of the pneumatic system to improve dispensing accuracy and reliability, providing a more efficient and precise solution for modern agricultural fertilization operations.

[0040] Please see Figures 1-6This utility model provides an embodiment: a dual-shaft spiral pneumatic synergistic fertilizer discharge device, including a fertilizer tank 1, a housing 301, and a stirring assembly. A top cover 2 is rotatably connected to the top of the fertilizer tank 1. The stirring assembly is installed inside the fertilizer tank 1. The housing 301 is fixedly connected to one side of the fertilizer tank 1. A motor 302 is fixedly connected to the housing 301. A gear 309 is fixedly connected to the output end of the motor 302. A gear 308 meshes with one side of the gear 309. A spiral shaft 311 is fixedly connected to one side of the gear 309. A spiral shaft 310 is fixedly connected to one side of the gear 308. A discharge pipe 303 is fixedly connected to the bottom of the fertilizer bin 1. An external pneumatic assembly is installed on the fertilizer bin 1 to output airflow to the discharge pipe 303. The pneumatic assembly includes a second outer shell 306, an air inlet pipe 315 fixedly connected to one side of the second outer shell 306, a second motor 313 fixedly connected to the inside of the second outer shell 306, an impeller 314 fixedly connected to the output end of the second motor 313, an air outlet pipe 312 fixedly connected to the top of the second outer shell 306, a second connecting pipe 307 fixedly connected to the top of the air outlet pipe 312, a diversion pipe 304 fixedly connected to one side of the second connecting pipe 307, and a first connecting pipe fixedly connected between the diversion pipe 304 and the discharge pipe 303. 305. This device is installed on a tractor. Fertilizer is fed into the fertilizer bin 1 by opening the top cover 2. Then, the fertilizer is stirred by activating the stirring assembly. Subsequently, motor 302 is started, which drives gear 309 to rotate. Gear 309 drives screw shaft 311 to rotate. Gear 309 drives gear 308 to rotate screw shaft 310. Thus, the rotating screw shaft 310 and screw shaft 311 work together to precisely move the fertilizer in the fertilizer bin 1, and then transport the fertilizer to the discharge pipe 303. This facilitates the precise delivery of fertilizer by the device, thereby improving the accuracy of fertilizer conveying. For accuracy, the user can adjust the fertilizer output by adjusting the rotation speed of motor 302, which helps improve the adaptability of the device. At the same time, starting motor 313 drives impeller 314 to rotate. The rotating impeller 314 brings airflow into connecting pipe 307 through air inlet pipe 315. Then the airflow enters connecting pipe 305 through split pipe 304, and then enters discharge pipe 303 through connecting pipe 305, thus blowing the fertilizer out of discharge pipe 303. This allows the fertilizer particles to be fully dispersed in the airflow, and the airflow carries the fertilizer particles evenly to the target area, thereby improving the uniformity of fertilizer discharge of the device.

[0041] In a preferred embodiment of this utility model, a through hole is provided on the outer shell 306. The impeller 314 is rotatably connected to the inside of the outer shell 306 through the through hole, which facilitates the motor 313 to drive the impeller 314 to rotate. This facilitates the impeller 314 to drive the airflow through the air inlet pipe 315 into the discharge pipe 303, thereby blowing the fertilizer out of the discharge pipe 303. This allows the fertilizer particles to be fully dispersed by the airflow, and the airflow to carry the fertilizer particles evenly to the target area, thereby improving the uniformity of fertilizer discharge of this device.

[0042] In a preferred embodiment of this utility model, a through hole 2 is provided on the outer shell 301, and a gear 2 309 is rotatably connected to the inside of the outer shell 301 through the through hole 2. This facilitates the rotation of the gear 2 309 by the motor 302, which in turn facilitates the rotation of the spiral shaft 2 311 and the spiral shaft 1 310. This allows the rotating spiral shaft 1 310 and the spiral shaft 2 311 to work together to precisely move the fertilizer in the fertilizer box 1, thereby facilitating the precise delivery of fertilizer by the device and increasing the fertilizer discharge accuracy of the device.

[0043] Please see Figure 3 and Figure 6 In this embodiment, the stirring assembly includes a housing 401, a motor 402 fixedly connected to the outside of the housing 401, a gear 403 fixedly connected to the output end of the motor 402, a gear 404 meshing with one side of the gear 403, a stirring frame 405 fixedly connected to one side of the gear 403, and a stirring frame 406 fixedly connected to one side of the gear 404. By starting the motor 402, the gear 403 is driven to rotate, which in turn drives the stirring frame 405 to rotate. The gear 403 then drives the stirring frame 406 to rotate via the gear 404. This facilitates the stirring frame 405 and the stirring frame 406 to work together to stir the fertilizer in the fertilizer box 1, thereby breaking up any clumps in the fertilizer and improving the accuracy of the conveying process.

[0044] In a preferred embodiment of this utility model, a through hole is provided on the outer shell 401, and the gear 403 is rotatably connected to the inside of the outer shell 401 through the through hole, which is beneficial for the motor 402 to drive the gear 403 to rotate, which is beneficial for the gear 403 to drive the stirring rack 405 to rotate.

[0045] In a preferred embodiment of this utility model, a through hole four is provided on the fertilizer box 1, and a stirring rack two 406 is rotatably connected to the inside of the fertilizer box 1 through the through hole four, which is conducive to the stirring rack two 406 cooperating with the stirring rack one 405 to stir the fertilizer in the fertilizer box 1, thereby helping to break up the clumps of fertilizer.

[0046] During operation, this device is installed on a tractor. Fertilizer is fed into the fertilizer bin 1 by opening the top cover 2. Then, starting motor 302 drives gear 303 to rotate, which in turn drives mixing frame 1 405 to rotate. Gear 303, through transmission gear 404, drives mixing frame 2 406 to rotate, thus facilitating the mixing of fertilizer in the fertilizer bin 1 by mixing frame 1 405 and mixing frame 2 406. This helps to break up any clumps in the fertilizer, improving the accuracy of the conveying process. Subsequently, starting motor 102 drives gear 209 to rotate, which in turn drives screw shaft 2 311 to rotate. Gear 209, through transmission gear 1 308, drives screw shaft 1 310 to rotate, thus enabling the rotating screw shaft 1 310 and screw shaft 2 311 to work together precisely. The fertilizer in the moving fertilizer bin 1 is moved and then transported to the discharge pipe 303, which facilitates the precise delivery of fertilizer by the device and improves the accuracy of fertilizer delivery. The user can adjust the discharge amount of fertilizer by adjusting the rotation speed of motor 1 302, which improves the adaptability of the device. At the same time, motor 2 313 is started to drive impeller 314 to rotate. The rotating impeller 314 brings airflow into connecting pipe 2 307 through air inlet pipe 315. Then the airflow enters connecting pipe 1 305 through diverter pipe 304, and then enters discharge pipe 303 through connecting pipe 1 305, thus blowing the fertilizer out of discharge pipe 303. This allows the fertilizer particles to be fully dispersed in the airflow, and the airflow carries the fertilizer particles evenly to the target area, which helps to improve the uniformity of fertilizer discharge of the device.

[0047] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations (e.g., variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.) will be conceived by those skilled in the art without actually departing from the scope and spirit of the claims.

[0048] Finally, it should be noted that the above embodiments are only preferred embodiments of this utility model and should not be used to limit the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A dual-shaft spiral pneumatic synergistic fertilizer discharge device, comprising a fertilizer tank (1), characterized in that: It also includes a first outer shell (301) and a stirring assembly. The top of the fertilizer box (1) is rotatably connected to a top cover (2). The stirring assembly is installed inside the fertilizer box (1). The first outer shell (301) is fixedly connected to one side of the fertilizer box (1). The first motor (302) is fixedly connected to the first outer shell (301). The output end of the first motor (302) is fixedly connected to a second gear (309). The first gear (308) is meshed and driven on one side of the second gear (309). The second screw shaft (311) is fixedly connected to one side of the second gear (309). The first screw shaft (310) is fixedly connected to one side of the first gear (308). The bottom of the fertilizer box (1) is fixedly connected to a discharge pipe (303). The outside of the fertilizer box (1) is provided with a pneumatic assembly that outputs airflow to the discharge pipe (303).

2. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 1, characterized in that: The pneumatic assembly includes a second outer shell (306), an air inlet pipe (315) fixedly connected to one side of the second outer shell (306), a second motor (313) fixedly connected to the inside of the second outer shell (306), an impeller (314) fixedly connected to the output end of the second motor (313), an air outlet pipe (312) fixedly connected to the top of the second outer shell (306), a second connecting pipe (307) fixedly connected to the top of the air outlet pipe (312), a diversion pipe (304) fixedly connected to one side of the second connecting pipe (307), and a first connecting pipe (305) fixedly connected between the diversion pipe (304) and the discharge pipe (303).

3. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 1, characterized in that: A through hole is provided on the outer casing 2 (306), and the impeller (314) is rotatably connected to the inside of the outer casing 2 (306) through the through hole 1.

4. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 1, characterized in that: A through hole 2 is provided on the outer casing 1 (301), and a gear 2 (309) is rotatably connected to the inside of the outer casing 1 (301) through the through hole 2.

5. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 1, characterized in that: The stirring assembly includes a housing three (401), a motor three (402) fixedly connected to the outside of the housing three (401), a gear three (403) fixedly connected to the output end of the motor three (402), a gear four (404) meshing and driving on one side of the gear three (403), a stirring frame one (405) fixedly connected to one side of the gear three (403), and a stirring frame two (406) fixedly connected to one side of the gear four (404).

6. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 5, characterized in that: The outer shell (401) has a through hole (3), and the gear (403) is rotatably connected to the inside of the outer shell (401) through the through hole (3).

7. The dual-shaft spiral pneumatic synergistic fertilizer discharge device according to claim 5, characterized in that: The fertilizer box (1) has a through hole four, and the mixing rack two (406) is rotatably connected to the inside of the fertilizer box (1) through the through hole four.

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