Manufacturing and processing equipment and manufacturing process of nitro water-soluble fertilizer containing humic acid particles

Abstract

The invention discloses nitro humic acid-containing granular water-soluble fertilizer manufacturing and processing equipment which comprises a first fixing frame and a second fixing frame, a mixing mechanism is arranged at the top of the first fixing frame, a stirring mechanism is arranged at the top of the mixing mechanism, and the second fixing frame is arranged on one side of the first fixing frame. A second fixing frame is arranged on the base, a feeding and discharging mechanism is arranged at the two ends of the second fixing frame, a uniform rolling and mixing mechanism is arranged in the middle of the top of the second fixing frame, and by integrating the feeding and discharging mechanism and an automatic control assembly, the automation level of equipment is remarkably improved; the feeding mechanism drives the feeding belt to carry out continuous conveying, automatic feeding and discharging of the nitro water-soluble fertilizer containing humic acid particles are achieved, manual intervention is reduced, the labor intensity is lowered, the mechanism is simple in structure and stable in operation, seamless connection with the mixing and stirring process can be achieved, and the overall production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of water-soluble fertilizer production technology, specifically to a processing equipment and process for producing nitro-containing humic acid granular water-soluble fertilizer. Background Technology

[0002] Nitro-containing humic acid granular water-soluble fertilizer is a highly efficient and environmentally friendly fertilizer. Its preparation involves multiple stages, including raw material mixing, stirring, crushing, and conveying. Existing technologies for processing this type of fertilizer typically suffer from uneven mixing and low automation, affecting production efficiency and product quality. Traditional mixing equipment often uses a single stirring method, which makes it difficult to achieve full integration of raw materials, easily leading to clumping or component separation. Furthermore, the feeding and unloading processes largely rely on manual operation, which is not only labor-intensive but also inefficient, failing to meet the needs of large-scale production. Therefore, there is an urgent need to develop processing equipment and technology that can achieve efficient and uniform mixing and improve automation levels. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a processing equipment and process for producing nitro-containing humic acid granular water-soluble fertilizer, thus solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a processing equipment for nitro-humic acid granular water-soluble fertilizer, comprising a first fixed frame and a second fixed frame, wherein a mixing mechanism is provided at the top of the first fixed frame, a stirring mechanism is provided at the top of the mixing mechanism, a second fixed frame is provided on one side of the first fixed frame, loading and unloading mechanisms are provided at both ends of the second fixed frame, and a uniform rolling mixing mechanism is provided at the top center of the second fixed frame.

[0005] Preferably, the mixing mechanism includes a mixing shell disposed on the top of the first fixed frame, a feeding hopper disposed on one side of the top of the mixing shell, a mixing roller disposed at the bottom of the feeding hopper, a first drive motor fixedly connected to one end of the mixing roller, a blower disposed on one side of the mixing shell, an air supply pipe being connected through one side of the blower, a mixing disc shell disposed at one end of the mixing shell, a second drive motor fixedly connected to the bottom of the mixing disc shell, a rotating shaft fixedly connected to the transmission end of the second drive motor, and a mixing and stirring frame mounted on the top of the rotating shaft.

[0006] Preferably, the stirring mechanism includes a mixing shell disposed at the top of the feed hopper, a third drive motor disposed at the bottom of the inner part of the mixing shell, a main turntable fixedly connected to the transmission end of the third drive motor, a driven turntable connected to the outer side of the main turntable via a belt drive, a first drive shaft fixedly connected to one side of the driven turntable, a first gear fixedly connected to one end of the first drive shaft, a second gear meshing with the outer side of the first gear, a second drive shaft fixedly connected to one side of the second gear, a main conical tooth fixedly connected to one end of the second drive shaft, a driven conical tooth meshing with one side of the main conical tooth, and a crushing and stirring drum mounted on the top of the driven conical tooth.

[0007] Preferably, the loading and unloading mechanism includes conveying frames at both ends of the second fixed frame, a small motor fixedly connected to one side of each conveying frame, a main roller and a driven roller movably connected to both ends of the conveying frame, and a feeding belt movably connected to the outer sides of the main roller and the driven roller.

[0008] Preferably, the uniform rolling mixing mechanism includes a third drive motor fixedly connected to the bottom end of the second fixed frame. The transmission end of the third drive motor is fixedly connected to two small main drive gears. The outer side of the small main drive gears is connected to a small driven gear via a chain drive. The middle of the small driven gears is fixedly connected to a small rotating shaft. Rollers are fixedly connected to both ends of the small rotating shaft. The middle of the rollers is tumblingly connected to a uniform rolling mixing cylinder.

[0009] A preferred manufacturing process for a nitro-containing humic acid granular water-soluble fertilizer includes the following steps: Step 1: Preliminary mixing and feeding of raw materials: This step involves the preliminary mixing and feeding of raw materials for nitro-containing humic acid granular water-soluble fertilizers, mainly accomplished using mixing and loading / unloading mechanisms. The aim is to achieve a preliminary, uniform mixing of raw materials such as nitro compounds, humic acid, fillers, and other additives, and to provide continuous, efficient feeding support for subsequent processes. This step utilizes a combination of mechanical rolling and pneumatic conveying to improve mixing efficiency, prevent raw material agglomeration or stratification, and ensure the stable operation of subsequent processes.

[0010] Step 2: Fine mixing and grinding of raw materials: This step involves the fine mixing and pulverization of the raw materials after initial mixing, mainly accomplished using a mixing mechanism. The purpose is to further refine the raw material particles through mechanical mixing and pulverization, promote the uniform dispersion and initial reaction of nitro-containing humic acid with other components, and improve the solubility and fertilizer efficiency of water-soluble fertilizers. This step employs a multi-stage transmission system, such as gears and bevel gears, to achieve efficient and stable mixing and pulverization, ensuring consistent product quality.

[0011] Step 3: Uniform rolling mixing and finished product preparation: This step involves the uniform rolling mixing of the raw materials after fine stirring and the preparation of the finished product, mainly accomplished using a uniform rolling mixing mechanism. The purpose is to achieve a highly uniform state of the raw materials through rolling mixing and to form the final granular product, ensuring the stability, flowability, and application effect of the water-soluble fertilizer. This step uses a combination of roller rolling and mechanical transmission to achieve gentle yet efficient mixing, avoiding granule breakage or separation. Beneficial effects

[0012] This invention provides a processing equipment and process for producing nitro-containing humic acid granular water-soluble fertilizer. Compared with the prior art, it has the following advantages: 1. The mixing mechanism, including a mixing drum and a mixing rack, utilizes the combined action of a first and a second drive motor to achieve dual mixing of the raw materials through rolling and stirring, ensuring that the nitro-humic acid granular water-soluble fertilizer raw materials are fully integrated during flow. Simultaneously, a uniform rolling mixing mechanism, driven by a third drive motor, rotates the rollers and the uniform rolling mixing drum, further enhancing the uniformity and consistency of the mixture. This multi-stage mixing method avoids component separation or clumping caused by traditional single-stage stirring, significantly improving the fertilizer's solubility and nutrient uniformity, thereby enhancing product quality and market competitiveness. Furthermore, the introduction of a blower enhances the flowability of the raw materials, further optimizing the mixing effect, making it suitable for large-scale continuous production.

[0013] 2. By integrating the loading and unloading mechanism and automated control components, the automation level of the equipment is significantly improved. The loading and unloading mechanism uses small motors to drive the main and driven rollers, which in turn drive the feeding belt for continuous conveying. This achieves automatic loading and unloading of raw materials for nitro-humic acid granular water-soluble fertilizers, reducing manual intervention and labor intensity. The mechanism has a simple structure and stable operation, and can seamlessly integrate with mixing and stirring processes, improving overall production efficiency. Simultaneously, through the coordinated control of multiple drive motors, the equipment achieves automation and continuity of the process, shortening the production cycle and reducing energy consumption and operating costs. The automated design is suitable not only for small and medium-sized production but also meets the needs of large-scale fertilizer processing enterprises, demonstrating high practicality and economic efficiency. Attached Figure Description

[0014] Figure 1 This is a first-view three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the roller structure of the present invention; Figure 3 This is a schematic diagram of the stirring mechanism of the present invention; Figure 4 This is a schematic diagram of the hybrid mechanism structure of the present invention; Figure 5This is a schematic diagram of the small motor structure of the present invention; Figure 6 This is a schematic diagram of the uniform rolling mixing mechanism of the present invention.

[0015] In the diagram: 1. First fixed frame; 2. Second fixed frame; 3. Mixing mechanism; 301. Mixing shell; 302. Feed hopper; 303. Mixing drum; 304. First drive motor; 305. Blower; 306. Air supply pipe; 307. Mixing disc shell; 308. Second drive motor; 309. Rotating shaft; 3010. Mixing rack; 4. Mixing mechanism; 401. Mixing shell; 402. Third drive motor; 403. Main turntable; 404. Slave turntable; 405. First transmission long shaft; 406. 407. First gear; 408. Second gear; 409. Second transmission shaft; 4010. Main conical gear; 4011. Driven conical gear; 4012. Crushing and mixing drum; 5. Loading and unloading mechanism; 501. Conveying frame; 502. Small motor; 503. Main roller; 504. Driven roller; 505. Feeding belt; 6. Uniform rolling mixing mechanism; 601. Third small drive motor; 602. Small main transmission gear; 603. Small driven gear; 604. Small rotating shaft; 605. Roller; 606. Uniform rolling mixing drum. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-6 The present invention provides a technical solution: a processing equipment for nitro humic acid granular water-soluble fertilizer, including a first fixed frame 1 and a second fixed frame 2. A mixing mechanism 3 is provided on the top of the first fixed frame 1, and a stirring mechanism 4 is provided on the top of the mixing mechanism 3. The second fixed frame 2 is provided on one side of the first fixed frame 1, and loading and unloading mechanisms 5 are provided at both ends of the second fixed frame 2. A uniform rolling mixing mechanism 6 is provided in the middle of the top of the second fixed frame 2.

[0018] The mixing mechanism 3 includes a mixing shell 301 disposed on the top of the first fixed frame 1, a feeding hopper 302 disposed on one side of the top of the mixing shell 301, a mixing roller 303 disposed at the bottom of the feeding hopper 302, a first drive motor 304 fixedly connected to one end of the mixing roller 303, a blower 305 disposed on one side of the mixing shell 301, an air supply pipe 306 connected through one side of the blower 305, a mixing disc shell 307 disposed at one end of the mixing shell 301, a second drive motor 308 fixedly connected to the bottom of the mixing disc shell 307, a rotating shaft 309 fixedly connected to the transmission end of the second drive motor 308, and a mixing and stirring frame 3010 mounted on the top of the rotating shaft 309.

[0019] In practical use, when producing nitro-humic acid granular water-soluble fertilizer, the raw materials for the nitro-humic acid granular water-soluble fertilizer are introduced into the mixing mechanism 4 through the feeding hopper. The rotation of the first drive motor 403 drives the mixing drum 303 to rotate, which facilitates the rolling and mixing of the raw materials for the nitro-humic acid granular water-soluble fertilizer. The blower 305 blows air through the air supply pipe 306, which blows the raw materials inside the mixing drum 303 into the mixing disc shell 307. Then, the rotation of the second drive motor 308 drives the mixing frame 3010 to mix the raw materials for the nitro-humic acid granular water-soluble fertilizer.

[0020] The stirring mechanism 4 includes a mixing shell 401 disposed on the top of the feed hopper 302. A third drive motor 402 is disposed at the bottom of the mixing shell 401. A main turntable 403 is fixedly connected to the transmission end of the third drive motor 402. A secondary turntable 404 is connected to the outer side of the main turntable 403 via a belt drive. A first transmission shaft 405 is fixedly connected to one side of the secondary turntable 404. A first gear 406 is fixedly connected to one end of the first transmission shaft 405. A second gear 407 is meshed with the outer side of the first gear 406. A second transmission shaft 408 is fixedly connected to one side of the second gear 407. A main conical tooth 409 is fixedly connected to one end of the second transmission shaft 408. A secondary conical tooth 4010 is meshed with one side of the main conical tooth 409. A crushing and stirring drum 4011 is installed on the top of the secondary conical tooth 4010.

[0021] In practical use, when making granular water-soluble fertilizer, the raw materials for granular water-soluble fertilizer are first put into the crushing and mixing drum 4011. Then, the rotation of the third drive motor 402 drives the main turntable 403 to rotate. During the rotation of the main turntable 403, the belt drives the secondary turntable 404 to rotate. During the rotation of the secondary turntable 404, the first transmission shaft 405 rotates. The rotation of the first transmission shaft 405 drives the first gear 406 to rotate. During the rotation of the first gear 406, the second gear 407 rotates. The second transmission shaft 408 on one side of the second gear 407 rotates, which drives the main conical gear 409 to rotate. During the rotation of the main conical gear 409, the secondary conical gear 4010 rotates, thus mixing the granular water-soluble fertilizer.

[0022] The loading and unloading mechanism 5 includes conveying frames 501 at both ends of the second fixed frame 2. A small motor 502 is fixedly connected to one side of each conveying frame 501. A main roller 503 and a driven roller 504 are movably connected to both ends of the conveying frame 501. A feeding belt 505 is movably driven connected to the outer side of the main roller 503 and the driven roller 504.

[0023] In practical use, when preparing raw materials for nitro-humic acid granular water-soluble fertilizer, the rotation of the small motor 502 drives the main roller 503 to rotate. During the rotation of the main roller 503, the feeding belt can cooperate with the rotating roller 504 to facilitate the conveying of the nitro-humic acid granular water-soluble fertilizer at the top of the feeding belt 505, thus facilitating processing.

[0024] The uniform rolling mixing mechanism 6 includes a third small drive motor 601 fixedly connected to the bottom end of the second fixed frame 2. The transmission end of the third small drive motor 601 is fixedly connected to two small main drive gears 602. The outer side of the small main drive gears 602 is connected to a small driven gear 603 via a chain drive. The middle of the small driven gear 603 is fixedly connected to a small rotating shaft 604. The two ends of the small rotating shaft 604 are fixedly connected to rollers 605. The middle of the rollers 605 is rolledly connected to a uniform rolling mixing cylinder 606.

[0025] In practical use, during the preparation of the mixture, in order to achieve uniform and thorough mixing, the rotation of the third small drive motor 601 drives the small main drive gear 602 to rotate. The rotation of the small main drive gear 602 facilitates the rotation of the small rotating shaft 604, causing the roller 605 to rotate, thereby driving the uniformly rolling mixing drum 606 to prepare fertilizer.

[0026] A manufacturing process for a nitro-containing humic acid granular water-soluble fertilizer includes the following steps: Step 1: Preliminary mixing and feeding of raw materials The operator feeds the pre-weighed nitro-humic acid granular water-soluble fertilizer raw materials, including nitro nitrogen source, humic acid powder, potassium salt, phosphate fertilizer, and trace elements, into the feed hopper 302 of the mixing mechanism 3 via the loading and unloading mechanism 5. The loading and unloading mechanism 5 consists of a conveying frame 501, a small motor 502, a main rotating roller 503, a driven rotating roller 504, and a feeding belt 505. After the small motor 502 is started, the main rotating roller 503 rotates, driving the feeding belt 505 to move along the conveying frame 501, feeding the raw materials smoothly and continuously into the feed hopper 302. The running speed of the feeding belt 505 is adjustable, usually controlled at 0.5-1.5 meters / minute, to ensure uniform feeding and avoid blockage or overfeeding. During the feeding process, the operator needs to monitor the physical state of the raw materials, such as humidity and particle size, and perform pretreatment such as drying or crushing if necessary to adapt to the mixing mechanism. After the raw materials enter the feed hopper 302, they fall into the mixing drum 303. The mixing drum 303 is driven by the first drive motor 304 and rotates at a speed of 30-60 revolutions per minute. The drum has a spiral or baffle structure inside, which tumbles and shears the raw materials during rotation, achieving preliminary mixing. The mixing time is typically 10-20 minutes, depending on the type and proportion of the raw materials. Humic acid is prone to absorbing moisture and clumping; the mechanical action of the drum effectively disperses the particles, improving mixing uniformity. Simultaneously, the blower 305 on one side of the mixing shell 301 starts, blowing dry air or inert gas such as nitrogen into the mixing drum 303 through the air supply pipe 306. The airflow pressure is controlled at 0.1-0.3 MPa. The airflow not only assists in the flow of the raw materials and prevents them from sticking to the walls, but also blows some lightweight raw materials, such as fine humic acid powder, into the mixing disc shell 307, achieving preliminary classification and conveying. Inside the mixing disc shell 307, the second drive motor 308 drives the mixing rack 3010 to rotate at a speed of 50-100 revolutions per minute via the rotating shaft 309. The mixing rack 3010 adopts a multi-blade or paddle design to further stir and mix the raw materials. The stirring time is approximately 5-15 minutes to ensure sufficient contact and initial reaction of the raw materials. Nitro compounds and humic acid begin to undergo physical adsorption during the mixing process, laying the foundation for subsequent chemical reactions. Throughout the process, the operator needs to monitor the mixing status through sensors such as humidity sensors or flow meters and adjust parameters such as motor speed or airflow pressure as needed. Step 2: Fine mixing and grinding of raw materials: After preliminary mixing, the raw materials fall naturally from the outlet of the mixing disc shell 307 of the mixing mechanism 3, or enter the pulverizing and mixing drum 4011 of the stirring mechanism 4 with airflow assistance. The pulverizing and mixing drum 4011 is located inside the mixing shell 401, and a third drive motor 402 is installed at its bottom. After the third drive motor 402 is started, its transmission end drives the main turntable 403 to rotate at a speed of 100-200 revolutions per minute. The main turntable 403 is connected to the secondary turntable 404 via belt drive, and the transmission ratio is usually 1:1.5 to 1:2.5 to increase torque and speed stability. A first transmission shaft 405 is fixedly connected to the secondary turntable 404, and a first gear 406 is installed at one end of the first transmission shaft 405. The first gear 406 meshes with a second gear 407, and the gear module is selected from 2 to 4 to ensure smooth transmission and durability.

[0027] The second gear 407 is fixedly connected to the second transmission shaft 408. A main conical tooth 409 is installed at one end of the second transmission shaft 408, meshing with a driven conical tooth 4010. The tooth ratio of the conical teeth is typically 1:1 to 1:1.2, enabling the conversion of power from the horizontal to the vertical direction. A pulverizing and stirring drum 4011 is installed at the top of the driven conical tooth 4010, containing stirring blades or pulverizing blades. When the driven conical tooth 4010 rotates, it drives the pulverizing and stirring drum 4011 to rotate at a speed of 200-400 revolutions per minute. The raw material is subjected to high-speed shearing and impact within the drum, further pulverizing and mixing the particles. For example, the particle size of humic acid particles can be reduced from the initial 1-2 mm to 0.1-0.5 mm, increasing its dissolution rate in water. The stirring time is controlled at 15-30 minutes, depending on the hardness of the raw material and the required fineness.

[0028] During the mixing process, operators can add a small amount of water or a binder such as polyvinyl alcohol to promote particle bonding and granulation. Nitro-based humic acid water-soluble fertilizers typically require a certain moisture content of 5%-10% to ensure granule formation. Simultaneously, a temperature sensor can be installed inside the mixing shell 401 to monitor heat generation during the mixing process and prevent excessively high temperatures (above 60°C) from causing raw material decomposition. If necessary, cooling water can be introduced through the shell jacket to control the temperature.

[0029] Step 3: Uniform rolling mixing and finished product preparation: After fine mixing, the raw materials are discharged from the outlet of the crushing and mixing drum 4011 of the mixing mechanism 4, and enter the uniform rolling mixing drum 606 of the uniform rolling mixing mechanism 6 by gravity or conveying equipment. The uniform rolling mixing drum 606 is a cylindrical structure made of food-grade stainless steel or wear-resistant material, and its capacity can be designed according to the production scale, for example, 100-500 liters. The two ends of the drum are supported by rollers 605, which are fixedly connected to a small rotating shaft 604. The small rotating shaft 604 is driven by a small driven gear 603, which is connected to a small main drive gear 602 via a chain. The small main drive gear 602 is driven by a third small drive motor 601, the motor power of which is usually 1.5-3 kW, and the speed is adjustable from 10-30 rpm.

[0030] After the third small drive motor 601 is started, its transmission end drives two small main drive gears 602 to rotate synchronously, which in turn drives a small driven gear 603 to rotate via a chain drive. The small driven gear 603 drives a small rotating shaft 604 and a roller 605 to rotate, thereby causing the uniform rolling mixing drum 606 to roll at a speed of 10-20 revolutions per minute. The raw materials tumble inside the drum as it rotates, achieving three-dimensional motion mixing. The mixing time is usually 20-40 minutes to ensure that the raw materials are fully homogeneous and that the nitro-containing humic acid particles and other trace elements such as zinc and boron are evenly dispersed during the rolling process, avoiding component segregation.

[0031] During the mixing process, operators can add small amounts of lubricants such as diatomaceous earth or anti-caking agents such as talc powder, depending on product requirements, to improve granule flowability and storage stability. Simultaneously, the mixing status can be monitored through observation windows or sensors on the cylinder. For example, near-infrared spectroscopy can be used to detect component uniformity. If granulation is required, a small amount of water or binder solution can be sprayed during the rolling process to promote granule formation. Uniform humidification via a spray device ensures that the granule size is controlled at 1-3 mm, meeting water-soluble fertilizer standards.

[0032] After mixing, the uniformly rolling mixing drum 606 can be tilted or discharged through the outlet valve to enter the packaging or storage stage. Throughout the process, the rolling mixing method reduces mechanical shear force and avoids particle breakage, making it particularly suitable for brittle raw materials such as humic acid particles. In addition, the mechanism adopts a double gear drive to ensure the smoothness and synchronization of the drum movement, thereby improving the equipment life and mixing effect.

[0033] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A processing device for nitro-containing humic acid granular water-soluble fertilizer, comprising a first fixed frame (1) and a second fixed frame (2), characterized in that, A mixing mechanism (3) is provided on the top of the first fixed frame (1), a stirring mechanism (4) is provided on the top of the mixing mechanism (3), a second fixed frame (2) is provided on one side of the first fixed frame (1), a loading and unloading mechanism (5) is provided at both ends of the second fixed frame (2), and a uniform rolling mixing mechanism (6) is provided in the middle of the top of the second fixed frame (2).

2. The equipment for producing and processing nitro-containing humic acid granular water-soluble fertilizer according to claim 1, characterized in that: The mixing mechanism (3) includes a mixing shell (301) disposed on the top of the first fixed frame (1), a feeding hopper (302) disposed on one side of the top of the mixing shell (301), a mixing drum (303) disposed at the bottom of the feeding hopper (302), a first drive motor (304) fixedly connected to one end of the mixing drum (303), a blower (305) disposed on one side of the mixing shell (301), an air supply pipe (306) connected through one side of the blower (305), a mixing disc shell (307) disposed at one end of the mixing shell (301), a second drive motor (308) fixedly connected to the bottom of the mixing disc shell (307), a rotating shaft (309) fixedly connected to the transmission end of the second drive motor (308), and a mixing and stirring rack (3010) mounted on the top of the rotating shaft (309).

3. The equipment for producing and processing nitro-containing humic acid granular water-soluble fertilizer according to claim 1, characterized in that: The stirring mechanism (4) includes a mixing shell (401) disposed at the top of the feed hopper (302). A third drive motor (402) is disposed at the bottom of the mixing shell (401). A main turntable (403) is fixedly connected to the transmission end of the third drive motor (402). A secondary turntable (404) is connected to the outer side of the main turntable (403) via a belt drive. A first transmission shaft (405) is fixedly connected to one side of the secondary turntable (404). One end of 405 is fixedly connected to a first gear (406), and the outer side of the first gear (406) is meshed with a second gear (407). One side of the second gear (407) is fixedly connected to a second transmission shaft (408), and one end of the second transmission shaft (408) is fixedly connected to a main conical tooth (409). One side of the main conical tooth (409) is meshed with a secondary conical tooth (4010), and a crushing and stirring cylinder (4011) is installed on the top of the secondary conical tooth (4010).

4. The equipment for producing and processing nitro-containing humic acid granular water-soluble fertilizer according to claim 1, characterized in that: The loading and unloading mechanism (5) includes conveying frames (501) at both ends of the second fixed frame (2). A small motor (502) is fixedly connected to one side of each conveying frame (501). A main roller (503) and a slave roller (504) are movably connected to both ends of the conveying frame (501). A feeding belt (505) is movably connected to the outer side of the main roller (503) and the slave roller (504).

5. The equipment and process for producing nitro-containing humic acid granular water-soluble fertilizer according to claim 1, characterized in that: The uniform rolling mixing mechanism (6) includes a third small drive motor (601) fixedly connected to the bottom end of the second fixed frame (2). The transmission end of the third small drive motor (601) is fixedly connected to two small main drive gears (602). The outer side of the small main drive gears (602) is connected to a small driven gear (603) via a chain drive. The middle part of the small driven gears (603) is fixedly connected to a small rotating shaft (604). The two ends of the small rotating shaft (604) are fixedly connected to rollers (605). The middle part of the rollers (605) is rolledly connected to a uniform rolling mixing cylinder (606).

6. A manufacturing process for a nitro-humic acid-containing granular water-soluble fertilizer, comprising the nitro-humic acid-containing granular water-soluble fertilizer manufacturing equipment described in claims 1-5, characterized in that... Includes the following steps: Step 1: Preliminary mixing and feeding of raw materials: This step involves the preliminary mixing and feeding of nitro humic acid granular water-soluble fertilizer raw materials, which is mainly completed by the mixing mechanism (3) and the loading and unloading mechanism (5): The purpose is to initially and uniformly mix the raw materials (such as nitro compounds, humic acid, fillers and other additives) and provide continuous and efficient feeding support for subsequent processes. This step improves the mixing efficiency by combining mechanical rolling and airflow conveying, avoids raw material clumping or stratification, and ensures the stable progress of subsequent processes. Step 2: Fine mixing and grinding of raw materials: This step involves fine mixing and crushing of the raw materials after initial mixing. It is mainly completed by using a mixing mechanism (4). The purpose is to further refine the raw material particles through mechanical mixing and crushing, promote the uniform dispersion and initial reaction of nitro-containing humic acid and other components, and improve the solubility and fertilizer efficiency of water-soluble fertilizer. This step adopts a multi-stage transmission system (such as gear and bevel gear transmission) to achieve efficient and stable mixing and crushing, and ensure consistent product quality. Step 3: Uniform rolling mixing and finished product preparation: This step involves the uniform rolling mixing of raw materials after fine stirring and the preparation of finished products. It is mainly completed by using a uniform rolling mixing mechanism (6). The purpose is to make the raw materials reach a highly uniform state through rolling mixing and form the final granular product, so as to ensure the stability, fluidity and application effect of water-soluble fertilizer. This step adopts a combination of roller rolling and mechanical transmission to achieve gentle and efficient mixing and avoid particle breakage or separation.

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