A nitrogen, phosphorus and potassium compound fertilizer batching device
By designing a ring-shaped weighing sensor and a triangular plate, and combining it with a control panel and a solenoid valve, the metering error problem caused by raw material characteristics interference in the existing device was solved, achieving precise batching and stable quality of nitrogen, phosphorus, and potassium compound fertilizer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYUNGANG HONGHUA ECOLOGICAL FERTILIZER CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-06-12
AI Technical Summary
Existing nitrogen, phosphorus, and potassium compound fertilizer mixing devices are easily affected by the characteristics of raw materials during metering, resulting in large errors in nutrient ratios and unstable compound fertilizer quality.
A ring-shaped weighing sensor is used to weigh the entire area of the funnel box and raw materials. Combined with the triangular plate that fits against the edge of the conveyor belt, the raw materials are prevented from falling. Combined with the control panel and solenoid valve to control the discharge, precise material dispensing is achieved.
It improves metering accuracy, ensures the stability and consistency of compound fertilizer quality, prevents the mixing ratio from being affected by fallen raw materials, and guarantees the quality of compound fertilizer.
Smart Images

Figure CN224349650U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ingredient mixing technology, and in particular to a nitrogen, phosphorus and potassium compound fertilizer mixing device. Background Technology
[0002] With the acceleration of agricultural modernization, the development of large-scale planting and precision agriculture has placed higher demands on the quality of compound fertilizers. Different crops, soil types, and different growth stages have significantly different requirements for the ratio of nitrogen, phosphorus, and potassium. This necessitates flexible and precise formulation in the compound fertilizer production process to meet diverse agricultural needs.
[0003] The metering on existing nitrogen, phosphorus, and potassium compound fertilizer mixing devices is usually done by single-point weighing and volume measurement, which is easily affected by the characteristics of raw materials, resulting in large errors in nutrient ratios, unstable compound fertilizer quality, and difficulty in guaranteeing fertilizer efficiency. Utility Model Content
[0004] The purpose of this invention is to solve the problems of single-point weighing and volume measurement being easily affected by the characteristics of raw materials, resulting in large errors in nutrient ratios in the existing technology, and to propose a nitrogen, phosphorus and potassium compound fertilizer mixing device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a nitrogen-phosphorus-potassium compound fertilizer mixing device, comprising a square plate, a groove on the top of the square plate, a U-shaped groove on the inner wall of the groove near the bottom, a conveyor belt embedded inside the U-shaped groove, conveyor rollers inside the conveyor belt near both ends, both ends of the conveyor rollers penetrating the inner wall of the groove and rotatably connected to their bearings, a drive motor fixedly connected to one side wall of the square plate, the output end of the drive motor fixedly connected to one end of the conveyor roller, three annular plates above the square plate, vertical columns fixedly connected to the bottom of the annular plates near the four corners, the bottom of the vertical columns fixedly connected to the top of the square plate, annular grooves on the top of the annular plates, annular weighing sensors fixedly connected inside the annular grooves, annular plates mounted on the top of the annular weighing sensors, and a funnel box fixedly connected to the inner wall of the annular plates.
[0006] Preferably, the square plate is fixedly connected to a support leg at its bottom and near its four corners, and the bottom of the support leg is trapezoidal.
[0007] Preferably, a triangular plate is fixedly connected to the inner wall of the groove and above the U-shaped groove, and the bottom of the triangular plate is in contact with the surface of the conveyor belt.
[0008] Preferably, a control panel is fixedly installed on one side wall of the square plate and near one corner of the top.
[0009] Preferably, the bottom of each funnel box is fixed and connected to a discharge pipe.
[0010] Preferably, a solenoid valve is fixedly installed at one end of each discharge pipe.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, the ring-shaped weighing sensor is used to weigh the funnel box and raw materials in a "full range" manner, which can counteract the effects of bridging and off-center loading, thereby improving the metering accuracy and ensuring the stable quality of compound fertilizer.
[0013] 2. In this utility model, by attaching the triangular plate to the edge of the conveyor belt, the raw materials can be prevented from falling off the edge, thereby preventing the falling raw materials from affecting the batching ratio. Attached Figure Description
[0014] Figure 1 This utility model provides a three-dimensional view of the overall structure of a nitrogen-phosphorus-potassium compound fertilizer mixing device;
[0015] Figure 2 This utility model provides an overall structural cross-sectional view of a nitrogen-phosphorus-potassium compound fertilizer mixing device;
[0016] Figure 3 This utility model provides a front view of the overall structure of a nitrogen-phosphorus-potassium compound fertilizer mixing device;
[0017] Figure 4 This utility model provides a side view of the overall structure of a nitrogen, phosphorus, and potassium compound fertilizer mixing device.
[0018] Legend: 1. Square plate; 2. Support leg; 3. Groove; 4. U-shaped groove; 5. Conveyor belt; 6. Conveyor roller; 7. Triangular plate; 8. Drive motor; 9. Control panel; 10. Annular plate; 11. Vertical column; 12. Annular groove; 13. Annular load cell; 14. Ring plate; 15. Funnel box; 16. Discharge pipe; 17. Solenoid valve. Detailed Implementation
[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0021] Example 1, such as Figure 1-4 As shown, this utility model provides a nitrogen, phosphorus, and potassium compound fertilizer mixing device, including a square plate 1. The top of the square plate 1 has a groove 3. The inner wall of the groove 3 and near the bottom has a U-shaped groove 4. A conveyor belt 5 is embedded inside the U-shaped groove 4. Conveying rollers 6 are provided inside the conveyor belt 5 and near both ends. Both ends of the conveying rollers 6 pass through the inner wall of the groove 3 and are rotatably connected to their bearings. A drive motor 8 is fixedly connected to one side wall of the square plate 1. The output end of the drive motor 8 is fixedly connected to one end of the conveying roller 6. Three annular plates 10 are provided above the square plate 1. Vertical columns 11 are fixedly connected to the bottom of the annular plates 10 and near the four corners. The bottom of the vertical columns 11 is fixedly connected to the top of the square plate 1. Annular grooves 12 are provided on the top of the annular plates 10. Annular weighing sensors 13 are fixedly connected inside the annular grooves 12. Annular plates 14 are installed on the top of the annular weighing sensors 13. A funnel box 15 is fixedly connected to the inner wall of the annular plates 14.
[0022] The overall effect of Embodiment 1 is as follows: a groove 3 is provided at the top of the square plate 1, and a U-shaped groove 4 is provided on the inner wall of the groove 3 near the bottom. A conveyor belt 5 is embedded inside the U-shaped groove 4, and conveyor rollers 6 are provided inside the conveyor belt 5 near both ends. Both ends of the conveyor rollers 6 penetrate the inner wall of the groove 3 and are rotatably connected to their bearings. A drive motor 8 is fixedly connected to one side wall of the square plate 1, and the output end of the drive motor 8 is fixedly connected to one end of the conveyor roller 6. This allows the drive motor 8 to drive the conveyor roller 6 to rotate, and the rotation of the conveyor roller 6 to drive the conveyor belt 5 to rotate and transport the raw materials. The effect of entering the mixing tank is achieved by three annular plates 10 above the square plate 1. Vertical columns 11 are fixedly connected to the bottom of the annular plates 10 and near the four corners. The bottom of the vertical columns 11 is fixedly connected to the top of the square plate 1. Annular grooves 12 are opened on the top of the annular plates 10. Annular weighing sensors 13 are fixedly connected inside the annular grooves 12. Annular plates 14 are installed on the top of the annular weighing sensors 13. A funnel box 15 is fixedly connected to the inner wall of the annular plates 14, which can enable the annular weighing sensors 13 to weigh the funnel box 15 and the raw materials inside it.
[0023] Example 2, as Figure 1-4 As shown, support legs 2 are fixedly connected to the bottom of the square plate 1 and near the four corners, and the bottom of the support legs 2 is trapezoidal; a triangular plate 7 is fixedly connected to the inner wall of the groove 3 and above the U-shaped groove 4, and the bottom of the triangular plate 7 is in contact with the surface of the conveyor belt 5; a control panel 9 is fixedly installed on one side wall of the square plate 1 and near the top corner; the bottom of the funnel box 15 is fixed and connected to the discharge pipe 16; a solenoid valve 17 is fixedly installed at one end of the discharge pipe 16.
[0024] The overall effect of embodiment 2 is as follows: support legs 2 are fixedly connected to the bottom of the square plate 1 and near the four corners. The bottom of each support leg 2 is trapezoidal, which can support the bottom of the square plate 1; a triangular plate 7 is fixedly connected to the inner wall of the groove 3 and above the U-shaped groove 4. The bottom of the triangular plate 7 is in contact with the surface of the conveyor belt 5, which can prevent the raw material from falling to the edge of the conveyor belt 5; a control panel 9 is fixedly installed on one side wall of the square plate 1 and near the top corner, which can control the device; a discharge pipe 16 is fixedly connected to the bottom of the funnel box 15, which can discharge the raw material in the funnel box 15; a solenoid valve 17 is fixedly installed at one end of the discharge pipe 16, which can control the discharge of the material from the discharge pipe 16.
[0025] Working Principle: Nitrogen, phosphorus, and potassium raw materials are respectively fed into three funnel boxes 15. The funnel boxes 15 are pressed by the annular weighing sensor 13 through the ring plate 14. The sensor collects the weight data of the raw materials in real time and transmits it to the control panel 9. At this time, the control panel 9 determines whether the weight of the raw materials in each funnel box 15 meets the standard according to the preset formula. If the standard is met, the solenoid valve 17 is triggered to open the discharge pipe 16, accurately releasing the raw materials. The raw materials can then fall onto the conveyor belt 5 through the discharge pipe 16. The drive motor 8 drives the conveyor roller 6 to rotate, and the conveyor belt 5 transports the raw materials at a uniform speed to the downstream mixing tank. If the annular weighing sensor 13 detects an abnormal change in the weight of the funnel box 15, the system automatically triggers a slight vibration of the annular groove 12, which, together with the smooth inner wall, disperses the agglomerated raw materials, breaks up bridging, and ensures continuous discharge.
[0026] The wiring diagrams of the drive motor 8, control panel 9, ring weighing sensor 13, and solenoid valve 17 in this utility model are common knowledge in the field. Their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring layout of the drive motor 8, control panel 9, ring weighing sensor 13, and solenoid valve 17 will not be explained in detail.
[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A nitrogen-phosphorus-potassium compound fertilizer mixing device, comprising a square plate (1), characterized in that: The square plate (1) has a groove (3) at its top. A U-shaped groove (4) is formed on the inner wall of the groove (3) near its bottom. A conveyor belt (5) is embedded inside the U-shaped groove (4). Conveying rollers (6) are provided inside the conveyor belt (5) near both ends. Both ends of the conveyor rollers (6) penetrate the inner wall of the groove (3) and are rotatably connected to its bearings. A drive motor (8) is fixedly connected to one side wall of the square plate (1). The output end of the drive motor (8) is fixedly connected to one end of the conveyor roller (6). Three annular plates (10) are provided above the square plate (1). Vertical columns (11) are fixedly connected to the bottom of the annular plates (10) and near the four corners. The bottom of the vertical columns (11) is fixedly connected to the top of the square plate (1). Annular grooves (12) are opened on the top of the annular plates (10). Annular weighing sensors (13) are fixedly connected inside the annular grooves (12). Annular plates (14) are installed on the top of the annular weighing sensors (13). A funnel box (15) is fixedly connected to the inner wall of the annular plates (14).
2. The nitrogen, phosphorus, and potassium compound fertilizer mixing device according to claim 1, characterized in that: The bottom of the square plate (1) and near the four corners are all fixedly connected to support legs (2), and the bottom of the support legs (2) is trapezoidal.
3. The nitrogen-phosphorus-potassium compound fertilizer mixing device according to claim 1, characterized in that: A triangular plate (7) is fixedly connected to the inner wall of the groove (3) and above the U-shaped groove (4), and the bottom of the triangular plate (7) is in contact with the surface of the conveyor belt (5).
4. The nitrogen-phosphorus-potassium compound fertilizer mixing device according to claim 1, characterized in that: A control panel (9) is fixedly installed on one side wall of the square plate (1) and near the top corner.
5. The nitrogen-phosphorus-potassium compound fertilizer mixing device according to claim 1, characterized in that: The bottom of each funnel box (15) is fixed and connected to a discharge pipe (16).
6. The nitrogen-phosphorus-potassium compound fertilizer mixing device according to claim 5, characterized in that: A solenoid valve (17) is fixedly installed at one end of each discharge pipe (16).