An agricultural fertilizer conveying and metering device

Abstract

This utility model relates to the field of agricultural fertilizer conveying and metering technology. It provides an agricultural fertilizer conveying and metering device, including a storage hopper, a feeding pipe connected to the bottom of the storage hopper, a metering pipe connected to the bottom of the feeding pipe, and a discharge hopper connected to the bottom of the metering pipe. A rotating shaft is located at the axial center of the storage hopper and the feeding pipe. A spiral feeding blade is installed on the lower half of the rotating shaft, and the spiral feeding blade is entirely distributed inside the feeding pipe with its edges tightly fitted to the inner wall of the feeding pipe. A weighing and metering sealing mechanism is installed inside the metering pipe. The weighing and metering sealing mechanism includes a bracket installed inside the metering pipe and an electric telescopic rod installed on top of the bracket. A weighing and metering sealing component is installed at the piston rod end of the electric telescopic rod. This agricultural fertilizer conveying and metering device, through the synergistic action of the spiral feeding blade and the stirring rod, achieves uniform, continuous, and controllable conveying of fertilizer materials, effectively avoiding material agglomeration and blockage problems.

Description

Technical Field

[0001] This utility model relates to the field of agricultural fertilizer conveying and metering technology, specifically to an agricultural fertilizer conveying and metering device. Background Technology

[0002] With the development of modern agriculture and the continuous improvement of agricultural production automation, the precise application of agricultural fertilizers has become an important means to improve crop yield and quality, reduce resource waste and environmental pollution. Agricultural fertilizer conveying and metering devices, as key equipment for achieving precise fertilizer application, are responsible for accurately conveying fertilizers from storage bins to application equipment and measuring their quantity. Their performance directly affects the accuracy of fertilizer application and the economic benefits of agricultural production.

[0003] Currently, most agricultural fertilizer conveying and metering devices on the market adopt a split design, meaning the storage, conveying, and metering sections are separate, and the fertilizer is conveyed and weighed through mechanical or pneumatic means. However, existing split-type agricultural fertilizer conveying and metering devices have the following shortcomings:

[0004] Uneven and clog-prone conveying: In the split design, the feeding device and the metering device are separate. During the conveying process, the material is prone to unstable flow, accumulation and agglomeration, resulting in discontinuous and uneven conveying, which seriously affects the accuracy of subsequent weighing and the operational stability of the equipment.

[0005] Complex structure and low degree of automation: The structure of the split device is relatively complex, the equipment is large in size, difficult to install and debug, and the processes such as feeding, sealing, weighing and unloading rely on manual control. The level of automation is insufficient, the labor intensity is high, and the production efficiency is difficult to improve.

[0006] Therefore, this solution proposes an agricultural fertilizer delivery and metering device to solve the above problems. Summary of the Invention

[0007] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide an agricultural fertilizer conveying and metering device.

[0008] To achieve the aforementioned objective, the technical solution of this utility model is implemented as follows: An agricultural fertilizer conveying and metering device includes a storage hopper, a feeding pipe connected to the bottom end of the storage hopper, a metering pipe connected to the bottom end of the feeding pipe, and a discharge hopper connected to the bottom end of the metering pipe. A rotating shaft is distributed at the axial position inside the storage hopper and the feeding pipe. A spiral feeding blade is installed on the lower half of the rotating shaft. The spiral feeding blade is distributed entirely inside the feeding pipe, and the edges of the blades are tightly attached to the inner wall of the feeding pipe. A weighing and metering sealing mechanism is installed inside the metering pipe. The weighing and metering sealing mechanism includes a bracket installed inside the metering pipe and an electric telescopic rod installed on the top of the bracket. A weighing and metering sealing component is installed at the piston rod end of the electric telescopic rod.

[0009] Preferably, the weighing and metering sealing assembly includes a fixed platform directly connected to the end of the piston rod of the electric telescopic rod, and a conical sealing plug distributed above the fixed platform. A pressure sensor is installed in the center of the fixed platform, and the pressure receiving end of the pressure sensor is supported at the bottom center of the conical sealing plug. The diameter of the bottom of the conical sealing plug is set to 1.1 times the inner diameter of the feeding pipe, and the diameter of the bottom of the conical sealing plug is set to 0.5 times the inner diameter of the metering pipe.

[0010] Preferably, the diameter of the fixed platform is set to 0.8 times the diameter of the cone bottom of the conical sealing plug.

[0011] Preferably, the top end of the rotating shaft is rotatably mounted at the center of the cross-shaped mounting bracket located at the upper port of the storage hopper, and is connected to the drive end of the rotating drive component mounted on the top of the cross-shaped mounting bracket.

[0012] Preferably, the rotary drive component includes a geared motor, a first synchronous pulley, a second synchronous pulley, a synchronous belt, and a docking shaft. The output end of the geared motor and the top end of the docking shaft are respectively connected to the first synchronous pulley and the second synchronous pulley. The first synchronous pulley and the second synchronous pulley are driven by the synchronous belt. The bottom end of the docking shaft is connected to the top end of the rotating shaft.

[0013] Preferably, several stirring rods are evenly installed on the upper half of the rotating shaft.

[0014] The beneficial effects of this utility model are reflected in:

[0015] Uniform, continuous, and controllable conveying: The screw feeder blades installed on the lower half of the shaft ensure that fertilizer material is conveyed evenly and continuously to the metering tube, effectively preventing blockages and unstable flow during material transport. Furthermore, the feeding process automatically stops when the shaft stops rotating, achieving precise control over fertilizer conveying.

[0016] To prevent material caking and ensure fluidity: The agitator bars evenly installed on the upper half of the shaft continuously agitate the material during feeding, preventing fertilizer from caking, ensuring material fluidity and conveying efficiency, and avoiding equipment blockage and weighing errors caused by caking.

[0017] Accurate and reliable weighing: The weighing and sealing mechanism inside the metering tube effectively seals the bottom of the feeding tube with a conical sealing plug, blocking material flow and achieving a static weighing environment. A pressure sensor monitors the pressure inside the sealing assembly in real time, ensuring accurate weighing data and avoiding errors caused by dynamic weighing.

[0018] Reasonable structure, smooth sealing and material discharge: The conical sealing plug is reasonably sized to effectively block the flow of materials. At the same time, the fixed platform and the conical sealing plug work together to ensure that the fertilizer can fall smoothly when the weighing component is recovered, avoiding material residue and blockage, and improving the working stability and service life of the equipment.

[0019] High degree of automation and easy operation: The geared motor and synchronous belt transmission system work together to achieve stable drive of the rotating shaft, and the electric telescopic rod realizes automatic lifting and lowering of the sealing component. The entire conveying and metering process is highly automated, easy to operate, reduces manual intervention, and improves production efficiency and safety.

[0020] Wide range of applications and strong compatibility: The device has a compact and reasonable structure, is suitable for conveying and metering various granular or powdered agricultural fertilizers, and has strong adaptability and scalability, which is conducive to its promotion and application in agricultural production enterprises of different sizes.

[0021] This agricultural fertilizer conveying and metering device achieves uniform, continuous, and controllable conveying of fertilizer materials through the synergistic action of spiral feeding blades and agitating rods, effectively avoiding material clumping and blockage. The weighing and metering sealing mechanism, employing a conical sealing plug combined with a pressure sensor, ensures high precision and stability in the metering process, significantly improving weighing reliability and repeatability. The automated drive system enables highly efficient automation of the feeding, sealing, weighing, and unloading processes, reducing the difficulty and labor intensity of manual operation and improving overall production efficiency and safety. Furthermore, the device features a rational structure, advanced technology, and a wide range of applications, meeting the demands of modern agriculture for precise fertilizer application. It contributes to promoting intelligent and refined management of agricultural production and fostering green and sustainable agricultural development. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the rotary drive component of this utility model;

[0025] Figure 3 This is a schematic diagram of the weighing and metering sealing mechanism of this utility model;

[0026] Figure 4 This is an exploded separation diagram of the weighing and metering sealing component of this utility model;

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Storage hopper; 2. Feeding pipe; 3. Metering pipe; 4. Discharge hopper; 5. Rotating shaft; 6. Rotary drive component; 7. Spiral feed blades; 8. Weighing and metering sealing mechanism;

[0029] 11. Cross-shaped mounting bracket;

[0030] 51. Stirring rod;

[0031] 61. Gear motor; 62. First synchronous pulley; 63. Second synchronous pulley; 64. Synchronous belt; 65. Connecting shaft;

[0032] 81. Bracket; 82. Electric telescopic rod; 83. Weighing and metering sealing assembly;

[0033] 831. Fixed platform; 832. Pressure sensor; 833. Conical seal plug. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, and not all of them. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of the utility model without creative effort are within the scope of protection of the utility model.

[0035] It should be noted that if the utility model embodiment involves directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, "multiple" refers to two or more. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by the utility model.

[0037] Please refer to the instruction manual appendix. Figures 1-4 This utility model provides an agricultural fertilizer conveying and metering device, including a storage hopper 1, a feeding pipe 2, a metering pipe 3, a discharge hopper 4, and related transmission and metering components. The bottom end of the storage hopper 1 is connected to the feeding pipe 2, the bottom end of the feeding pipe 2 is connected to the metering pipe 3, and the bottom end of the metering pipe 3 is connected to the discharge hopper 4. A rotating shaft 5 is provided at the axial position inside the storage hopper 1 and the feeding pipe 2. The lower half of the rotating shaft 5 is equipped with spiral feeding blades 7. The spiral feeding blades 7 are distributed throughout the inside of the feeding pipe 2, and the edges of the blades are closely attached to the inner wall of the feeding pipe 2 to ensure that the fertilizer material can be conveyed evenly and continuously. At the same time, it can also stop the downward conveying of fertilizer when the rotating shaft 5 is not rotating, thereby providing a guarantee for subsequent weighing and metering operations.

[0038] Several stirring rods 51 are evenly installed on the upper half of the rotating shaft 5 to prevent material agglomeration and ensure material flowability. The top of the rotating shaft 5 is rotatably mounted to the center of the upper port of the storage hopper 1 via a cross mounting bracket 11. The top of the cross mounting bracket 11 is equipped with a rotation drive component 6, which includes a geared motor 61, a first synchronous pulley 62, a second synchronous pulley 63, a synchronous belt 64, and a docking shaft 65. The output end of the geared motor 61 is connected to the first synchronous pulley 62, and the top of the docking shaft 65 is connected to the second synchronous pulley 63. The first synchronous pulley 62 and the second synchronous pulley 63 are driven by the synchronous belt 64. The bottom end of the docking shaft 65 is connected to the top of the rotating shaft 5 to realize the driving rotation of the rotating shaft 5.

[0039] A weighing and sealing mechanism 8 is installed inside the metering tube 3. This mechanism includes a bracket 81 installed inside the metering tube 3 and an electric telescopic rod 82 installed on top of the bracket 81. A weighing and sealing assembly 83 is installed at the piston rod end of the electric telescopic rod 82. This assembly includes a fixed platform 831 and a conical sealing plug 833. The fixed platform 831 is directly connected to the piston rod end of the electric telescopic rod 82. A pressure sensor 832 is installed at the center inside the fixed platform 831, and the pressure receiving end of the pressure sensor 832 is supported at the bottom center of the conical sealing plug 833. The conical sealing plug 833 is located above the fixed platform 831, and its cone bottom diameter is 1.1 times the inner diameter of the feeding tube 2 and 0.5 times the inner diameter of the metering tube 3, ensuring effective blocking of material flow and accurate weighing during sealing. The diameter of the fixed platform 831 is 0.8 times the diameter of the cone bottom of the cone-shaped sealing plug 833, which ensures that the fertilizer falling on the cone-shaped sealing plug 833 can fall smoothly when the entire weighing and metering sealing assembly 83 is retracted from the lower port of the feeding pipe 2 along with the piston rod of the electric telescopic rod 82.

[0040] The working process of this agricultural fertilizer conveying and metering device is as follows: First, in the initial state, the electric telescopic rod 82 pushes the fixed platform 831 and the conical sealing plug 833 on the weighing and metering sealing assembly 83 upward, so that the conical surface of the conical sealing plug 833 is exactly sealed at the bottom outlet of the feeding pipe 2, preventing the fertilizer from falling. Subsequently, the reduction motor 61 drives the docking shaft 65 to rotate through the first synchronous pulley 62, the synchronous belt 64 and the second synchronous pulley 63, which in turn drives the rotating shaft 5 to rotate. The spiral feeding blades 7 on the rotating shaft 5 convey the fertilizer in the storage hopper 1 downward along the feeding pipe 2 to the bottom of the metering pipe 3.

[0041] During the feeding process, the stirring rods 51 evenly installed on the upper part of the rotating shaft 5 help prevent fertilizer from clumping and ensure smooth material flow. When the fertilizer reaches the conical sealing plug 833, the pressure sensor 832 detects the pressure value inside the sealing component 83 in real time. When the preset metering weight is reached, the reduction motor 61 stops working, and the spiral feeding blades 7 also stop rotating, blocking the fertilizer from continuing to flow downward.

[0042] Next, the electric telescopic rod 82 begins to retract, causing the support 81 and the sealing assembly 83 to descend, disengaging the conical sealing plug 833 from its sealing position at the bottom of the feeding pipe 2. Under gravity, the fertilizer falls into the discharge hopper 4, completing a precise weighing and discharging operation. After discharging is complete, the electric telescopic rod 82 rises again, resetting the sealing assembly 83 to its sealing position and resealing the bottom of the feeding pipe 2, awaiting the next round of conveying, weighing, and discharging cycle.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An agricultural fertilizer delivery metering device comprising a storage hopper (1), characterized in that, The bottom end of the storage hopper (1) is connected to the feeding pipe (2), the bottom end of the feeding pipe (2) is connected to the metering pipe (3), the bottom end of the metering pipe (3) is connected to the discharge hopper (4), a rotating shaft (5) is distributed at the axial position inside the storage hopper (1) and the feeding pipe (2), a spiral feeding blade (7) is installed on the lower half of the rotating shaft (5), the spiral feeding blade (7) is distributed inside the feeding pipe (2) and the edge of the blade is tightly attached to the inner wall of the feeding pipe (2), a weighing and metering sealing mechanism (8) is installed inside the metering pipe (3), the weighing and metering sealing mechanism (8) includes a bracket (81) installed inside the metering pipe (3) and an electric telescopic rod (82) installed on the top of the bracket (81), a weighing and metering sealing assembly (83) is installed at the piston rod end of the electric telescopic rod (82).

2. The agricultural fertilizer delivery metering device of claim 1, wherein, The weighing and metering sealing assembly (83) includes a fixed platform (831) directly connected to the end of the piston rod of the electric telescopic rod (82), and a conical sealing plug (833) distributed above the fixed platform (831). A pressure sensor (832) is installed in the center of the fixed platform (831). The pressure receiving end of the pressure sensor (832) is supported at the bottom center of the conical sealing plug (833). The diameter of the bottom of the conical sealing plug (833) is set to 1.1 times the inner diameter of the feeding pipe (2), and the diameter of the bottom of the conical sealing plug (833) is set to 0.5 times the inner diameter of the metering pipe (3).

3. An agricultural fertilizer delivery metering device as claimed in claim 2, wherein, The diameter of the fixed platform (831) is set to 0.8 times the diameter of the cone bottom of the cone-shaped sealing plug (833).

4. The agricultural fertilizer delivery metering device of claim 1, wherein, The top of the rotating shaft (5) is rotatably mounted at the center of the cross mounting bracket (11) set at the upper port of the storage hopper (1), and is connected to the driving end of the rotating drive component (6) mounted on the top of the cross mounting bracket (11).

5. An agricultural fertilizer delivery metering device as claimed in claim 4, wherein, The rotary drive component (6) includes a geared motor (61), a first synchronous pulley (62), a second synchronous pulley (63), a synchronous belt (64), and a docking shaft (65). The output end of the geared motor (61) and the top end of the docking shaft (65) are respectively connected to the first synchronous pulley (62) and the second synchronous pulley (63). The first synchronous pulley (62) and the second synchronous pulley (63) are driven by the synchronous belt (64). The bottom end of the docking shaft (65) is connected to the top end of the rotating shaft (5).

6. The agricultural fertilizer delivery metering device of claim 1, wherein, Several stirring rods (51) are evenly installed on the upper half of the rotating shaft (5).

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