A vertical non-powered screw conveying device for chemical fertilizer conveying

Abstract

The utility model provides a vertical non -power spiral conveying device for chemical fertilizer conveying, including feed mechanism, slide main part and buffer platform who links up in proper order, the slide main part is spiral slide, the spiral angle of slide main part is 15 to 20. The utility model discloses a spiral structure in the vertical direction, realizes the hoisting and conveying of material in the very small projection area, greatly improves the space utilization rate, utilizes the gravity of chemical fertilizer as the power source, under the action of the component force of gravity along the slide inclined plane, slides naturally, completes vertical hoisting and steering, and the angle range is optimized, can effectively balance the sliding speed and flow stability, avoids the block caused by the too small angle, prevents the too fast flow and impact caused by the too big angle, completely does not need power drive, realizes zero energy consumption conveying.

Description

Technical Field

[0001] This utility model relates to the field of fertilizer conveying technology, and in particular to a vertical non-powered screw conveyor for fertilizer conveying. Background Technology

[0002] Fertilizer conveying systems are indispensable key equipment in modern agricultural production systems, primarily used to transfer fertilizers from production to packaging or from storage to application. These systems typically consist of basic modules such as an inlet, conveyor belt, transmission system, support structure, and outlet. Their working principle involves the continuous horizontal or inclined transport of granular or powdered fertilizers via mechanical transmission. In large-scale fertilizer production enterprises and modern agricultural cooperatives, the stability and efficiency of the conveying system directly impact the operational efficiency of the entire production chain.

[0003] However, traditional fertilizer conveying equipment has revealed two prominent technical drawbacks in practical applications: excessive footprint and high energy consumption. On the one hand, to achieve long-distance conveying, these devices often require the laying of fixed conveyor lines tens or even hundreds of meters long, occupying valuable production space and resulting in a lack of flexibility in equipment layout. On the other hand, conveying devices typically use high-power electric motors as power sources, leading to astonishing energy consumption under continuous operation conditions. Related data shows that a standard 50-meter belt conveyor can consume 15-20 kilowatt-hours of electricity per hour. Furthermore, to maintain the continuity of the conveying process, multiple devices often need to operate in series, further exacerbating the energy consumption problem and resulting in persistently high operating costs.

[0004] To address the aforementioned issues, the industry has undertaken attempts at technological improvements, such as installing multi-layer support rollers beneath the conveyor belt and adding variable frequency speed control modules, in an effort to reduce system operating resistance and achieve on-demand energy supply. However, this solution has failed to effectively overcome the basic structural limitations of traditional conveying devices. The complexity of its support structure and transmission system has actually led to a further increase in equipment size, requiring an additional 15% of the floor space compared to existing equipment. Energy savings are only 8-12%, failing to fundamentally solve the technical dilemma of "high energy consumption and large size" in traditional conveying devices. Existing technological improvement solutions have not yet found a balance between space utilization and energy efficiency, necessitating the exploration of entirely new technological paths to achieve a substantial breakthrough in fertilizer conveying devices. Utility Model Content

[0005] To address the issues of large footprint and high energy consumption in fertilizer conveying devices, this utility model proposes a vertical non-powered screw conveyor for fertilizer conveying, comprising a feeding mechanism, a slide body, and a buffer platform connected in sequence. The slide body is a spiral slide with a helix angle of 15° to 20°.

[0006] A further improvement is that the width of the slide body gradually decreases from the feeding end to the discharging end, with the feeding end width being 800-1000mm and the discharging end width being 500-600mm.

[0007] A further improvement is that the inner wall of the slide body is provided with a wear-resistant coating of polytetrafluoroethylene with a thickness of 2-3mm.

[0008] A further improvement is made in that: the feeding mechanism includes a fertilizer discharge conveyor belt and a feeding hopper. The lower part of the feeding hopper is a square cylinder. A flow regulating plate is installed inside the square cylinder. The upper end of the flow regulating plate is hinged to one side wall of the square cylinder. Multiple bolt holes are provided on the adjacent side walls of the hinged side wall. The side is connected to the square cylinder by bolts. The feeding amount of fertilizer is controlled by adjusting the height of the regulating plate.

[0009] A further improvement is that the bottom of the buffer platform is equipped with a spring plate to absorb the impact force of the fertilizer, and a robotic arm is used to stack the fertilizer.

[0010] A further improvement is made in that a support column is provided at the spiral center of the slide body, and the support column is fixedly connected to the inner wall of the slide body.

[0011] The beneficial effects of this utility model are as follows: 1. This utility model achieves material lifting and conveying within a very small projected area through a vertical spiral structure, greatly improving space utilization and significantly saving land and factory costs, thereby saving valuable floor space for other production processes or equipment layout.

[0012] 2. This utility model adopts a spiral lift angle design of 15° to 20°, using the gravity of the fertilizer itself as a power source. Under the action of the gravity component along the inclined surface of the slide, it slides down naturally, completing vertical lifting and turning. At the same time, this angle range has been optimized to effectively balance the sliding speed and flow stability. It avoids blockage caused by too small an angle and prevents excessive flow velocity and impact caused by too large an angle. It requires no power drive and achieves zero-energy transportation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; The components include: 1. Feeding mechanism; 11. Fertilizer discharge conveyor belt; 12. Feeding hopper; 13. Flow regulating plate; 14. Bolt; 2. Slide body; 3. Buffer platform; 31. Spring plate; 4. Support column. Detailed Implementation

[0014] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0015] Example: according to Figure 1 As shown, this embodiment proposes a vertical, unpowered screw conveyor for fertilizer transportation, comprising a feeding mechanism 1, a slide body 2, and a buffer platform 3 connected in sequence. The slide body 2 adopts a spiral slide design with a spiral angle of 18 degrees and a total height of 4.5 meters. The width of the slide body 2 gradually decreases from the feeding end to the discharging end, with a width of 900 mm at the feeding end and 550 mm at the discharging end. The inner wall of the slide body 2 is coated with a wear-resistant polytetrafluoroethylene coating with a thickness of 2.5 mm, effectively reducing the coefficient of friction.

[0016] A support column 4 is installed at the spiral center of the slide body 2. The support column is made of Q235 steel pipe with a diameter of 200 mm. The support column 4 is fixedly connected to the inner wall of the slide body 2 by welding to ensure structural stability.

[0017] The feeding mechanism 1 includes a fertilizer discharge conveyor belt 11 and a feeding hopper 12. The fertilizer discharge conveyor belt 11 is 1000 mm wide and runs at a speed of 1 m / s. The lower part of the feeding hopper 12 is a square cylinder structure, and a flow regulating plate 13 is installed inside the square cylinder. The upper end of the flow regulating plate 13 is hinged to one side wall of the square cylinder. Four bolt holes are provided on the adjacent side walls of the hinged side wall, and the hopper is connected to the square cylinder by bolts 14. The amount of fertilizer fed can be precisely controlled by adjusting the height of the regulating plate, with an adjustment range of 100-300 mm.

[0018] The bottom of the buffer platform 3 is equipped with a spring plate 31, which is made of 65Mn spring steel and is 10 mm thick, and can effectively absorb the impact force of falling fertilizer. A six-axis robotic arm is installed at the outlet of the buffer platform 3 for automatic palletizing of fertilizer bags, with a palletizing efficiency of up to 600 bags per hour.

[0019] This device utilizes a rationally designed spiral angle and a tapering slide structure to achieve vertical transport of fertilizer using gravity, eliminating the need for external power and resulting in low operating costs. The application of a wear-resistant coating significantly extends the equipment's service life, while the spring-loaded cushioning mechanism effectively protects the integrity of the fertilizer packaging. The machine has a compact structure and small footprint, making it particularly suitable for vertical lifting operations in fertilizer production lines.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vertical, unpowered screw conveyor for transporting fertilizer, characterized in that: It includes a feeding mechanism (1), a slide body (2) and a buffer platform (3) connected in sequence. The slide body (2) is a spiral slide with a spiral angle of 15° to 20°.

2. The vertical unpowered screw conveyor for fertilizer transportation according to claim 1, characterized in that: The width of the slide body (2) gradually decreases from the feed end to the discharge end, with the feed end width being 800-1000mm and the discharge end width being 500-600mm.

3. The vertical unpowered screw conveyor for fertilizer transportation according to claim 1, characterized in that: The inner wall of the slide body (2) is provided with a wear-resistant coating of polytetrafluoroethylene with a thickness of 2-3mm.

4. A vertical unpowered screw conveyor for fertilizer transportation according to claim 1, characterized in that: The feeding mechanism (1) includes a fertilizer discharge conveyor belt (11) and a feeding hopper (12). The lower part of the feeding hopper (12) is a square cylinder. A flow regulating plate (13) is installed inside the square cylinder. The upper end of the flow regulating plate (13) is hinged to one side wall of the square cylinder. Multiple bolt holes are provided on the adjacent side walls of the hinged side wall. The side is connected to the square cylinder by bolts (14). The feeding amount of fertilizer is controlled by adjusting the height of the regulating plate.

5. A vertical, unpowered screw conveyor for fertilizer transportation according to claim 1, characterized in that: The buffer platform (3) is equipped with a spring plate (31) at the bottom to absorb the impact of fertilizer, and the fertilizer is stacked by setting up a robotic arm.

6. A vertical unpowered screw conveyor for fertilizer transportation according to claim 1, characterized in that: A support column (4) is provided at the spiral center of the slide body (2), and the support column (4) is fixedly connected to the inner wall of the slide body (2).

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