Spraying granulation sulfur-based compound fertilizer granulation device
By designing the sieving and dispersing components in the granulation screening device, the problem of clumping during the granulation of sulfur-based compound fertilizer by spray granulation was solved, realizing automated granule screening and dispersing, and improving product quality and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- STANLEY FERTILIZER SUIPING CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-05
AI Technical Summary
In traditional spray granulation equipment for sulfur-based compound fertilizers, fertilizer granules tend to clump together during production, resulting in low efficiency of manual sorting and potential damage to normal granules due to mechanical extrusion, thus affecting product quality and market competitiveness.
A device was designed that includes a particle screening bucket, a sieve frame, a screen, a particle turning component, and an agglomeration dispersing component. The device uses a lever to turn the material on the screen and the impact force of the receiving spoon to disperse agglomerated particles, and combines motor drive to achieve automated processing.
It effectively breaks up clumps of particles, improves screening efficiency and product quality, ensures particle uniformity, and enhances the product's market competitiveness.
Smart Images
Figure CN224194634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a spray granulation device for sulfur-based compound fertilizer, belonging to the field of spray granulation equipment for sulfur-based compound fertilizer. Background Technology
[0002] In agricultural production, fertilizer quality plays a decisive role in crop growth, development, and yield. Spray-granulated sulfur-based compound fertilizers, with their advantages of balanced nutrients and long-lasting effects, are highly favored by farmers, and market demand continues to rise. However, traditional spray-granulation equipment for sulfur-based compound fertilizers has revealed many insurmountable problems in actual production, severely restricting the improvement of product quality and production efficiency.
[0003] In the compound fertilizer production process, due to the combined effects of various factors such as raw material characteristics, spraying process conditions, and drying, fertilizer granules are prone to clumping during molding and subsequent processing. Previous granulation equipment lacked a targeted clumping handling mechanism. Once granules clumped, the only recourse was manual sorting or simple mechanical extrusion. However, manual sorting was inefficient, consuming significant manpower and time, and it was difficult to guarantee the complete removal of all clumped granules. Simple mechanical extrusion not only failed to effectively break up hardened clumps but could also damage normal granules, leading to breakage and affecting the overall quality and appearance of the product, thereby reducing its market competitiveness.
[0004] In summary, this utility model provides a spray granulation device for sulfur-based compound fertilizer to solve the above problems. Utility Model Content
[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a spray granulation device for sulfur-based compound fertilizer, so as to solve the problem mentioned in the background art that the agglomerated fertilizer particles cannot be quickly and effectively dispersed during the granulation process.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a spray granulation device for sulfur-based compound fertilizer, comprising a mounting frame and a granule screening barrel. The granule screening barrel is fixedly installed through the top of the mounting frame. A sieve frame is fixedly installed on the top of the inner wall of the granule screening barrel, and a screen is fixedly installed on the bottom of the sieve frame. The sieve frame and the screen form a hollow hemispherical shape. A granule turning component is installed between the two sides of the inner wall of the sieve frame and at the top of the screen. A discharge pipe is fixedly installed at the bottom of the screen. An agglomeration and dispersing component is fixedly installed between the two sides of the inner wall of the granule screening barrel and directly below the discharge pipe. A baffle is fixedly installed at an angle on one side of the granule screening barrel. A feed hopper is connected to the center of the top of the granule screening barrel. The bottom of the granule screening barrel is inverted bucket-shaped, and a discharge pipe is connected to the center of the bottom of the granule screening barrel.
[0007] Furthermore, the particle turning and screening assembly includes a first housing, which is fixedly installed on the top of the back of the particle screening barrel. A first motor is fixedly installed inside the first housing, and a drive shaft is fixedly installed at the output end of the first motor. One end of the drive shaft passes through the first housing, the particle screening barrel, and the screening frame in sequence and passes through the front of the inner wall of the screening frame. A lever is fixedly installed between the two sides of the bottom of the drive shaft.
[0008] Furthermore, the lever is curved in an arc shape, and the bottom arc surface of the lever contacts the concave spherical surface of the screen. The lever is rotatably connected to the first housing through a bearing.
[0009] Furthermore, the lever is rotatably connected to the particle screening barrel via a bearing, and the lever is rotatably connected to the sieve frame via a bearing.
[0010] Furthermore, the agglomeration and dispersing component includes a second housing, which is fixedly installed on the back of the particle screening barrel and located below the particle turning and screening component. A second motor is fixedly installed inside the second housing, and a connecting shaft is fixedly installed at the output end of the second motor. One end of the connecting shaft passes through the second housing and the particle screening barrel in sequence and extends to the back of the inner wall of the particle screening barrel. Multiple connecting plates are evenly fixedly connected around the axis of the connecting shaft and located directly below the discharge pipe. A receiving scoop is fixedly installed at the end of each connecting plate away from the connecting shaft.
[0011] Furthermore, the connecting shaft is rotatably connected to the second housing via bearings, and the connecting shaft is rotatably connected to the particle screening barrel via bearings.
[0012] Furthermore, the rim of the receiving spoon faces the inclined surface of the top of the baffle, and the main cross-section of the receiving spoon is hemispherical.
[0013] The beneficial effects of this utility model are:
[0014] By installing an agglomeration and dispersing component below the discharge pipe, when agglomerated particles remain in the sieve frame, opening the solenoid valve on the discharge pipe will discharge them. At this time, the agglomeration and dispersing component is activated. The unique hemispherical design of the receiving spoon and the setting of the spoon opening facing the baffle allow it to effectively receive and disperse agglomerated particles with the impact force generated by the circular motion. The dispersed particles that slide down the inclined surface of the baffle effectively solve the problem of agglomeration during fertilizer particle screening, ensuring product quality and particle uniformity, and enhancing the product's competitiveness in the market. Attached Figure Description
[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0016] Figure 1 This is a perspective view of a spray granulation device for sulfur-based compound fertilizer according to the present invention.
[0017] Figure 2 This is a main sectional view of a spray granulation device for sulfur-based compound fertilizer according to the present invention.
[0018] Figure 3 for Figure 2 A side sectional view of the particle turning and screening assembly shown.
[0019] Figure 4 for Figure 2 The diagram shows a top sectional view of the agglomeration and dispersing component.
[0020] In the diagram: 1. Mounting frame; 2. Particle screening bucket; 3. Screening frame; 4. Screen; 5. Particle turning and screening assembly; 6. Discharge pipe; 7. Baffle; 8. Agglomeration and dispersing assembly; 9. Feed hopper; 10. Discharge pipe; 51. First housing; 52. First motor; 53. Drive shaft; 54. Lever; 81. Second housing; 82. Second motor; 83. Connecting shaft; 84. Connecting plate; 85. Receiving scoop. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] Please see Figure 1-4This utility model provides a technical solution: a spray granulation device for sulfur-based compound fertilizer, comprising a mounting frame 1 and a granule screening barrel 2. The granule screening barrel 2 is fixedly inserted through the top of the mounting frame 1. A sieve frame 3 is fixedly installed on the top of the inner wall of the granule screening barrel 2, and a screen 4 is fixedly installed on the bottom of the sieve frame 3. The shape formed by the sieve frame 3 and the screen 4 is a hollow hemispherical shape. This design greatly increases the contact area between the material and the screen 4, making the screening process more efficient. At the same time, the hollow hemispherical structure helps the material to be evenly distributed on the screen 4 under its own gravity and subsequent mechanical action, improving the uniformity and accuracy of screening. A granule turning component 5 is installed between the two sides of the inner wall of the sieve frame 3 and at the top of the screen 4. A discharge component is fixedly installed at the bottom of the screen 4. A clump-dispersing component 8 is fixedly installed between the two sides of the inner wall of the granule screening barrel 2 and directly below the discharge pipe 6. A solenoid valve is installed on the discharge pipe 6. By opening the solenoid valve, the clumps of granules retained inside the sieve frame 3 can be discharged downward from the discharge pipe 6. A baffle 7 is fixedly installed on one side of the granule screening barrel 2 at an angle. A feed hopper 9 is connected to the center of the top of the granule screening barrel 2. The bottom of the granule screening barrel 2 is shaped like an inverted bucket. This design corresponds to the hollow hemispherical shape of the sieve frame 3 and the screen 4, which allows the screened material to flow quickly and centrally to the bottom center under its own gravity. A discharge pipe 10 is connected to the center of the bottom of the granule screening barrel 2 to ensure that the qualified fertilizer granules can be discharged smoothly and enter subsequent packaging and other processes.
[0023] Please see Figure 2-3 The particle turning and screening assembly 5 includes a first housing 51, which is fixedly installed on the top of the back of the particle screening barrel 2. A first motor 52 is fixedly installed inside the first housing 51, and a drive shaft 53 is fixedly installed at the output end of the first motor 52. One end of the drive shaft 53 passes through the first housing 51, the particle screening barrel 2, and the screening frame 3, and passes through the front of the inner wall of the screening frame 3. A lever 54 is fixedly installed between the two sides of the bottom of the drive shaft 53. The lever 54 is curved in an arc shape, and the bottom arc surface of the lever 54 contacts the concave spherical surface of the screen 4. This design allows the lever 54 to fully conform to the surface of the screen 4 during rotation. The material on the screen 4 is evenly and effectively turned over. The lever 54 is rotatably connected to the first housing 51 through the bearing. The first motor 52 is a three-phase asynchronous motor, and the output end can rotate in both directions. When the first motor 52 starts, the drive shaft 53 drives the lever 54 to move back and forth inside the sieve frame 3. The lever 54 continuously turns over the material accumulated on the screen 4, so that the material can fully contact the screen 4, avoiding the problem of incomplete screening caused by material accumulation, thereby improving screening efficiency and quality. The lever 54 is rotatably connected to the particle screening barrel 2 through the bearing, and the lever 54 is rotatably connected to the sieve frame 3 through the bearing.
[0024] Please see Figure 2 and Figure 4 The agglomeration and dispersing component 8 includes a second housing 81, which is fixedly installed on the back of the particle screening barrel 2 and located below the particle turning and screening component 5. A second motor 82 is fixedly installed inside the second housing 81. A connecting shaft 83 is fixedly installed at the output end of the second motor 82. One end of the connecting shaft 83 passes through the second housing 81 and the particle screening barrel 2 and extends to the back of the inner wall of the particle screening barrel 2. Multiple connecting plates 84 are evenly fixedly connected around the axis of the connecting shaft 83, located directly below the discharge pipe 6. A receiving scoop 85 is fixedly installed at the end of each connecting plate 84 away from the connecting shaft 83. The connecting shaft 83 is rotatably connected to the second housing 81 via bearings, and rotatably connected to the particle screening barrel 2 via bearings. The scoop opening of the receiving scoop 85... Facing the top inclined surface of the baffle 7, the main cross-section of the receiving spoon 85 is hemispherical. This unique shape design can better receive the agglomerated particles discharged from the discharge pipe 6 and use the impact force generated by its movement to break up the agglomerated particles. The left side of the baffle 7 is fixed to the left side of the inner wall of the particle screening barrel 2, and the right side of the baffle 7 is inclined downward. When the connecting shaft 83 rotates, multiple connecting plates 84 drive multiple receiving spoons 85 to perform circumferential motion. As they pass through the bottom of the discharge pipe 6 one by one, the receiving spoons 85 can knock the agglomerated particles discharged from the discharge pipe 6 onto the inclined surface of the baffle 7. The impact force can break up the agglomerated particles, and the broken particles can slide down the inclined surface of the baffle 7. In this way, the problem of fertilizer particle agglomeration is effectively solved, ensuring the quality and uniformity of the product.
[0025] Specific implementation method: The sulfur-based compound fertilizer granules, which are initially formed by spray granulation, fall into the granule screening barrel 2 by their own gravity through the feed hopper 9 at the top center. The funnel-shaped design and large diameter of the feed hopper 9 ensure that the material can enter the screening barrel conveniently and efficiently, providing a stable material supply for the subsequent screening process.
[0026] After the material enters the particle screening barrel 2, it falls onto the hollow hemispherical structure composed of the screening frame 3 and the screen 4. The hollow hemispherical design greatly increases the contact area between the material and the screen 4, and under the action of the material's own gravity, it can be relatively evenly distributed on the surface of the screen 4. At this time, the particle turning and screening assembly 5 is started, and the first motor 52 in the first housing 51 starts to work. Since the first motor 52 is a three-phase asynchronous motor, the output end can rotate in both directions, driving the drive shaft 53 to move left and right reciprocatingly. The levers 54 fixed on both sides of the bottom of the drive shaft 53 move accordingly. The levers 54 are curved in an arc shape, and their bottom arc surface contacts the concave spherical surface of the screen 4. During the rotation, they fully fit the surface of the screen 4, continuously turning the material accumulated on the screen 4, so that the material can fully contact the screen 4 from all directions, avoiding incomplete screening due to material accumulation, and significantly improving screening efficiency and accuracy. Particles that meet the particle size requirements pass through the screen 4 and are discharged through the discharge pipe 6.
[0027] During the screening process, if any clumps of particles remain inside the sieve frame 3, the solenoid valve on the discharge pipe 6 can be opened, and the clumps will be discharged downwards from the discharge pipe 6. At the same time, the clump breaking component 8 operates, and the second motor 82 inside the second housing 81 starts, driving the connecting shaft 83 to rotate. Multiple connecting plates 84, which are evenly fixed around the axis on the shaft surface of the connecting shaft 83, drive the receiving scoops 85 at one end of each plate to make a circular motion. The scoop opening of the receiving scoop 85 faces the top inclined surface of the baffle 7, and its main cross-section is hemispherical, which can effectively receive the clumps discharged from the discharge pipe 6. When the receiving scoop 85 passes the bottom of the discharge pipe 6, it knocks the clumps towards the inclined surface of the baffle 7, using the impact force to break up the clumps. The broken particles slide down the downward inclined surface on the right side of the baffle 7, effectively solving the problem of fertilizer particle clumping and ensuring product quality and particle uniformity.
[0028] After screening and agglomeration, qualified fertilizer granules are guided by the inverted bucket-shaped structure at the bottom of the granule screening barrel 2 and flow rapidly and centrally to the bottom center under their own gravity. They are then discharged through the discharge pipe 10 connected to the bottom center and enter subsequent packaging and other processes.
[0029] 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. A spray granulation device for sulfur-based compound fertilizer, comprising a mounting frame (1) and a granulation screening tank (2), characterized in that: The particle screening barrel (2) is fixedly installed through the top of the mounting frame (1). A sieve frame (3) is fixedly installed on the top of the inner wall of the particle screening barrel (2). A screen (4) is fixedly installed on the bottom of the sieve frame (3). The shape formed by the sieve frame (3) and the screen (4) is a hollow hemisphere. A particle turning and screening component (5) is installed between the two sides of the inner wall of the sieve frame (3) and on top of the screen (4). A discharge pipe (6) is fixedly installed on the bottom of the screen (4). An agglomeration and dispersing component (8) is fixedly installed between the two sides of the inner wall of the particle screening barrel (2) and directly below the discharge pipe (6). A baffle (7) is fixedly installed on one side of the particle screening barrel (2). A feed hopper (9) is connected to the center of the top of the particle screening barrel (2). The bottom of the particle screening barrel (2) is inverted bucket-shaped. A discharge pipe (10) is connected to the center of the bottom of the particle screening barrel (2).
2. The spray granulation device for sulfur-based compound fertilizer according to claim 1, characterized in that: The particle turning and screening assembly (5) includes a first housing (51), which is fixedly installed on the top of the back of the particle screening barrel (2). A first motor (52) is fixedly installed inside the first housing (51). A drive shaft (53) is fixedly installed at the output end of the first motor (52). One end of the drive shaft (53) passes through the first housing (51), the particle screening barrel (2), and the screening frame (3) in sequence and passes through the front of the inner wall of the screening frame (3). A lever (54) is fixedly installed between the two sides of the bottom of the shaft surface of the drive shaft (53).
3. The spray granulation device for sulfur-based compound fertilizer according to claim 2, characterized in that: The lever (54) is curved in an arc shape, and the bottom arc surface of the lever (54) is in contact with the concave spherical surface of the screen (4). The lever (54) is rotatably connected to the first housing (51) through a bearing.
4. The spray granulation device for sulfur-based compound fertilizer according to claim 2, characterized in that: The lever (54) is rotatably connected to the particle screening barrel (2) via a bearing, and the lever (54) is rotatably connected to the sieve frame (3) via a bearing.
5. The spray granulation device for sulfur-based compound fertilizer according to claim 1, characterized in that: The agglomeration and dispersing component (8) includes a second housing (81), which is fixedly installed on the back of the particle screening barrel (2) and below the particle turning and screening component (5). A second motor (82) is fixedly installed inside the second housing (81), and a connecting shaft (83) is fixedly installed at the output end of the second motor (82). One end of the connecting shaft (83) passes through the second housing (81) and the particle screening barrel (2) in sequence and extends to the back of the inner wall of the particle screening barrel (2). Multiple connecting plates (84) are evenly fixedly connected around the axis of the connecting shaft (83) and located directly below the discharge pipe (6). A receiving spoon (85) is fixedly installed at the end of each connecting plate (84) away from the connecting shaft (83).
6. The spray granulation device for sulfur-based compound fertilizer according to claim 5, characterized in that: The connecting shaft (83) is rotatably connected to the second housing (81) via a bearing, and the connecting shaft (83) is rotatably connected to the particle screening barrel (2) via a bearing.
7. The spray granulation device for sulfur-based compound fertilizer according to claim 5, characterized in that: The rim of the receiving spoon (85) faces the top inclined surface of the baffle (7), and the main cross-section of the receiving spoon (85) is hemispherical.