A urea particle storage, urea dissolving, urea solution storage integrated system

Abstract

The application discloses a kind of urea particle storage, urea dissolving, urea solution storage integrated system, it is related to urea processing field, including being located in the processing box below urea particle storage hopper, the urea particle storage hopper is connected with processing box for gravity discharging one-way discharge pipe, the inside of processing box is provided with urea dissolving cavity and solution storage cavity in upside-down distribution state, the outside of urea dissolving cavity and solution storage cavity is equipped with temperature control module.The urea particle storage, urea dissolving, urea solution storage integrated system, vertical structure integration storage, dissolving, store three major functions, gravity self-flow cancels intermediate transfer equipment, reduces land occupation and cost.Partition temperature control ensures that dissolving area is heated rapidly, storage area prevents crystallization, solves uneven heating problem.Drill bit rotation lifting arch breaking, elastic link extension impact particle, mechanical arch breaking and elastic synergy ensure smooth discharge.

Description

Technical Field

[0001] This invention relates to the field of urea processing technology, specifically to an integrated system for urea particle storage, urea dissolution, and urea solution storage. Background Technology

[0002] Urea is a commonly used nitrogen fertilizer, widely used in agriculture to promote plant growth. The processing of urea usually includes production, storage and dissolution. In the dissolution process, high-quality urea granules are selected first, and an appropriate amount of water is prepared by weighing. Then, the urea granules are slowly added to the water and continuously stirred to promote the dissolution of urea. During the stirring process, the urea granules are gradually dispersed to form a uniform urea solution. Finally, the solution is stored in a solution storage device for easy transportation and subsequent agricultural application. Traditional urea systems are mostly distributed, with separate storage, dissolution, and solution storage devices for urea granules. This results in low plant space utilization, high investment in civil engineering and equipment, cumbersome material handling, reliance on bucket elevators, dissolution pumps, and other equipment to transfer materials between different devices, increasing system complexity and energy consumption, and making operation and maintenance difficult. The dispersed equipment also leads to numerous pipelines and automatic gate valves, resulting in long installation and commissioning cycles and a large workload for daily inspection and maintenance. To address these issues, we propose an integrated system for urea granule storage, urea dissolution, and urea solution storage. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated system for storing urea granules, dissolving urea, and storing urea solutions, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an integrated system for urea granule storage, urea dissolution, and urea solution storage, comprising a processing box located below the urea granule storage hopper, a first feeding pipe for gravity feeding connected between the urea granule storage hopper and the processing box, the processing box having an internally arranged urea dissolution chamber and a solution storage chamber distributed vertically, and a temperature control module provided on the outside of the urea dissolution chamber and the solution storage chamber; The outer wall of the processing box is equipped with a magnetic flip plate assembly for detecting the contents of the urea dissolving chamber and the solution storage chamber. A second feeding pipe is connected between the urea dissolving chamber and the solution storage chamber. A first heating cover assembly is sleeved on the outside of the bottom end of the urea granule storage hopper. A protective cover is bolted to the top of the urea granule storage hopper. The inside of the protective cover is equipped with a synchronous rotation component. A conical cylinder is welded to the inner cavity of the urea granule storage hopper near the No. 1 feed pipe via a bracket. A spring mechanism that promotes the downward flow of urea granules by gravity is installed on the outside of the conical cylinder. A drilling and anti-clogging push component is provided at the center of the conical cylinder. A drive component that drives the push component to rotate and lift is provided inside the conical cylinder.

[0005] Preferably, the temperature control module includes a second heating plate assembly nested in the outer cavity of the urea dissolving chamber and the solution storage chamber, and the two ends of the second heating plate assembly are respectively connected to a steam heat transfer assembly and a hydrophobic assembly that penetrate the inner wall of the processing tank.

[0006] Preferably, the urea granule storage hopper and the outer side of the processing box are connected to a frame by bolts, the first heating hood assembly is welded to the inner side of the frame, the first and second feeding pipes are both equipped with automatic slide valves, and the urea dissolving chamber is equipped with a stirring assembly for stirring urea granules through bearings.

[0007] Preferably, the feeding assembly includes a drive shaft passing through the central axis of the conical cylinder, and the drive shaft is mounted on the inner wall of the top of the urea granule storage hopper via a bearing. A drill rod that rotates and rises and falls with the drive shaft passes through the interior of the conical cylinder via a bearing. An integrally formed conical drill bit is connected to the bottom end of the drill rod near the first feeding pipe.

[0008] Preferably, the synchronous rotation assembly includes a synchronous pulley located inside the protective cover, a synchronous belt is engaged with the outer side of the synchronous pulley, and a motor for driving the synchronous pulley to rotate synchronously is bolted to the outside of the protective cover. The transmission shaft and the synchronous pulley form a welded structure.

[0009] Preferably, the spring mechanism includes a spring rod that slides through the inner wall of the conical cylinder. The spring rod is distributed in a ring outside the conical cylinder, and a ratchet bar is provided on the outer side of the spring rod to break the stationary surface of the particles. An integrally formed conical spring head is connected to the end of the spring rod located outside the conical cylinder.

[0010] Preferably, the end of the spring rod located inside the conical cylinder is movably mounted with a roller that drives the spring rod to extend and retract laterally via a bearing, and a support spring is sleeved on the outside of the spring rod, with both ends abutting between the roller and the inner wall of the conical cylinder, and the support spring causes the spring rod to elastically return to its original position; The rolling surface of the roller is fitted with a turntable that is sleeved on the outside of the drill pipe. The outer side of the turntable is provided with equally spaced triangular protrusions in a ring. The triangular protrusions squeeze the roller, causing the roller to drive the spring rod to slide laterally.

[0011] Preferably, the drive assembly includes a square column shaft that is slidably sleeved inside the drill rod shaft, and the top end of the square column shaft is connected to the drive shaft by bolts. The drill rod is connected to two integrally formed cuboid connecting strips on both sides of the conical cylinder. A through groove is provided at the axis of the turntable for the drill rod and connecting strip to slide through, and the through groove is adapted to the cross-sectional shape formed by the drill rod and connecting strip.

[0012] Preferably, the drill rod is connected to a spherical slider on the side above the turntable, and the inner wall of the conical cylinder is provided with an annular groove that allows the slider to rotate and slide at an inclination.

[0013] Preferably, a rotating ring, integrally formed and sleeved on the outside of the drill rod, is connected below the turntable. A rotating groove for the rotating ring to rotate is provided on the inner wall of the bottom end of the conical cylinder, and the cross-sectional shape of both the rotating ring and the rotating groove is T-shaped.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The system adopts a vertical structure, integrating the three major functions of urea granule storage, dissolution, and solution storage into one unit. It utilizes gravity flow to achieve automatic material transfer, eliminating intermediate transfer equipment such as bucket elevators and dissolution pumps, significantly reducing the floor space and number of equipment, and lowering civil engineering, equipment, installation, and maintenance costs. 2. The urea dissolving chamber and the solution storage chamber are each equipped with an independent No. 2 heating plate assembly to form a zoned temperature control system. This ensures that the dissolving zone heats up quickly to improve dissolving efficiency, while keeping the solution storage zone at a safe temperature to prevent crystallization. This effectively solves the problems of uneven heating and easy crystallization in traditional long pipeline heating systems. 3. The drill rod drives the drill bit to rotate and lift, breaking up the clumped particles. The triangular protrusions of the turntable squeeze the rollers, causing the spring rod to extend and retract. The conical spring head impacts the particle pile, and the ratchet pushes the particles. The mechanical arch breaking and the spring impact work together to ensure smooth particle feeding and stable and reliable system operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the present invention; Figure 3 This is a schematic diagram of the processing box structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the urea granule storage hopper of the present invention; Figure 5 This is a schematic diagram of the internal structure of the processing box of the present invention; Figure 6 This is a schematic diagram of the transmission shaft structure of the present invention; Figure 7This is a schematic diagram of the internal structure of the conical cylinder of the present invention; Figure 8 This is a schematic diagram of the elastic mechanism structure of the present invention; Figure 9 This is a schematic diagram of the cross-sectional structure of the rotating ring of the present invention; Figure 10 This is a schematic diagram of the turntable structure of the present invention; Figure 11 This is a schematic diagram of the slider structure of the present invention; Figure 12 This is a schematic diagram of the slide structure of the present invention.

[0016] In the diagram: 1. Urea granule storage hopper; 2. Processing box; 3. No. 1 feed pipe; 4. Frame; 5. Steam heating assembly; 6. Magnetic flip plate assembly; 7. Hydrophobic assembly; 8. Springing mechanism; 801. Roller; 802. Springing rod; 803. Support spring; 804. Turntable; 9. Stirring assembly; 10. Protective cover; 11. Motor; 12. No. 1 heating cover assembly; 13. No. 2 feed pipe; 14. Urea dissolving chamber; 15. Solution storage chamber; 16. No. 2 heating plate assembly; 17. Drive shaft; 18. Conical cylinder; 19. Drill rod; 20. Drill bit; 21. Square column shaft; 22. Springing head; 23. Synchronous belt; 24. Synchronous pulley; 25. Rotating ring; 26. Rotating groove; 27. Connecting bar; 28. Sliding block; 29. ​​Slide groove. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-5 The present invention provides a technical solution: an integrated system for urea granule storage, urea dissolution, and urea solution storage, including a processing tank 2 located below the urea granule storage hopper 1, a first feeding pipe 3 for gravity feeding connected between the urea granule storage hopper 1 and the processing tank 2, a frame 4 bolted to the outside of the urea granule storage hopper 1 and the processing tank 2, the processing tank 2 having an internally distributed urea dissolution chamber 14 and a solution storage chamber 15, and a feeding pipe at the top of the urea granule storage hopper 1.

[0019] In practice, urea granules are fed into the urea granule storage hopper 1 through the top feed pipe. The granules flow automatically into the urea dissolving chamber 14 by gravity through the first feed pipe 3. Water is added, stirred, and heated in the urea dissolving chamber 14 to fully dissolve the urea granules. The dissolved urea solution enters the solution storage chamber 15 below through the second feed pipe 13 for storage.

[0020] See Figures 1-5 It is known that a temperature control module is provided on the outside of the urea dissolving chamber 14 and the solution storage chamber 15. The temperature control module includes a second heating plate assembly 16 nested in the outer cavity of the urea dissolving chamber 14 and the solution storage chamber 15. The two ends of the second heating plate assembly 16 are respectively connected to a steam heat transfer assembly 5 and a hydrophobic assembly 7 that penetrate the inner wall of the processing tank 2. A magnetic flip plate assembly 6 for detecting the contents of the urea dissolving chamber 14 and the solution storage chamber 15 is installed on the outer wall of the processing tank 2. A second feeding pipe 13 is connected between the urea dissolving chamber 14 and the solution storage chamber 15. Automatic slide valves are installed inside both the first feeding pipe 3 and the second feeding pipe 13. A stirring assembly 9 for stirring urea granules is installed inside the urea dissolving chamber 14 through a bearing. A first heating cover assembly 12 welded to the inner side of the frame 4 is sleeved on the outside of the bottom end of the urea granule storage hopper 1.

[0021] In practice, urea granules in urea granule storage hopper 1 are automatically slid into urea dissolving chamber 14 in processing tank 2 by gravity through feeding pipe 3. A second heating plate assembly 16 is nested in the outer cavity of processing tank 2. Steam heating assembly 5 supplies steam to the second heating plate assembly 16. The second heating plate assembly 16 heats the urea dissolving chamber 14 and solution storage chamber 15 in separate zones. The hydrophobic assembly 7 discharges the condensate after heat exchange. The stirring assembly 9 in urea dissolving chamber 14 stirs the urea granules and water to accelerate dissolution. After dissolution, the urea solution flows into the solution storage chamber 15 below through feeding pipe 13 for temporary storage. The magnetic flip plate assembly 6 monitors the liquid level and capacity in urea dissolving chamber 14 and solution storage chamber 15 in real time. A first heating cover assembly 12 is sleeved on the outside of the bottom of urea granule storage hopper 1 to keep the urea granules in the storage hopper warm and prevent urea from absorbing moisture and caking. The system adopts a vertical structure, integrating the three major functions of urea granule storage, dissolution, and solution storage into one unit. It utilizes gravity flow to achieve automatic material transfer, eliminating intermediate transfer equipment such as bucket elevators and dissolution pumps, significantly reducing the footprint and number of equipment, and lowering civil engineering, equipment, installation, and maintenance costs. The zoned temperature control system ensures rapid heating in the dissolution zone to improve dissolution efficiency, while maintaining the solution storage zone at a safe temperature to prevent crystallization, effectively solving the problems of uneven heating and easy crystallization in traditional long pipeline heating systems.

[0022] See Figures 1-4 and Figure 6 It is known that a protective cover 10 is bolted to the top of the urea granule storage hopper 1. The protective cover 10 is equipped with a synchronous rotation assembly. The synchronous rotation assembly includes a synchronous wheel 24 located inside the protective cover 10. A synchronous belt 23 is meshed with the outside of the synchronous wheel 24. A motor 11 that drives the synchronous wheel 24 to rotate synchronously is bolted to the outside of the protective cover 10.

[0023] In practice, the motor 11 drives the synchronous pulley 24 to rotate, and the synchronous pulley 24 drives another synchronous pulley 24 to rotate through the synchronous belt 23. The two synchronous pulleys 24 drive the two transmission shafts 17 to rotate, and the protective cover 10 protects the synchronous pulleys 24 and the synchronous pulley 24.

[0024] See Figure 4 and Figures 6-12 It is known that a conical cylinder 18 is welded to the inner cavity of the urea granule storage hopper 1 near the first feed pipe 3 via a bracket. A spring mechanism 8 for promoting the downward flow of urea granules by gravity is installed on the outer side of the conical cylinder 18. The spring mechanism 8 includes a spring rod 802 that slides through the inner wall of the conical cylinder 18. The spring rod 802 is distributed in a ring on the outside of the conical cylinder 18, and a ratchet is provided on the outer side of the spring rod 802 to break the static surface of the granules. An integrally formed conical spring head 22 is connected to the end of the spring rod 802 located outside the conical cylinder 18. A roller 801 for driving the lateral extension and retraction of the spring rod 802 is movably installed on the end of the spring rod 802 located inside the conical cylinder 18 via a bearing. The spring rod 802 is sleeved with a support spring 803 at both ends abutting between the roller 801 and the inner wall of the conical cylinder 18. The support spring 803 causes the spring rod 802 to elastically return to its original position. The rolling surface of the roller 801 is in contact with a turntable 804 sleeved on the outside of the drill rod 19. The outer side of the turntable 804 is provided with triangular protrusions that are evenly spaced and distributed in a ring. The triangular protrusions squeeze the roller 801, causing the roller 801 to drive the spring rod 802 to slide laterally.

[0025] In practice, the connecting strip 27 on the drill rod 19 drives the turntable 804 to rotate synchronously. The triangular protrusions distributed in an evenly spaced ring on the outer side of the turntable 804 squeeze the roller 801 in sequence. The roller 801 is pushed by the triangular protrusions, which drives the spring rod 802 to slide laterally outward along the inner wall of the conical cylinder 18. The support spring 803 outside the spring rod 802 is compressed. When the apex of the triangular protrusion passes the roller 801, the elastic force of the support spring 803 pushes the spring rod 802 to return to its original position inward. The conical spring head 22 at the end of the spring rod 802 quickly impacts the urea particle pile, breaking the static surface of the particles. The ratchet on the outer side of the spring rod 802 moves the surrounding urea particles during the extension and retraction process, further destroying the bridging structure between the particles. The combined action of the rotary drilling of the drill bit 20 and the periodic impact of the spring rod 802 effectively breaks the caking and bridging of urea particles caused by moisture absorption, ensuring that the particles smoothly enter the first feed pipe 3. The synchronous belt 23 and the synchronous pulley 24 ensure that the transmission shafts 17 on both sides rotate synchronously, so that the drill rod 19 and the spring mechanism 8 work in coordination. The ratchet of the spring rod 802 pushes the particles during the extension and retraction process, further breaking the static surface and improving the feeding efficiency. By combining mechanical arch breaking and spring impact, the urea particles are assisted in overcoming moisture absorption caking and bridging, and gravity automatic feeding is realized. When the spring rod 802 extends, the ratchet pushes the material and the drill bit 20 to rotate and propel it. It can be operated briefly before emptying or changing batches for cleaning, which causes a small amount of urea particles that are stuck on the wall or retained in the cone area to converge and be discharged into the No. 1 feed pipe 3, reducing dead zone residue. The spring rod 802 with the ratchet periodically extending and retracting and the cone-shaped spring head 22 micro-impact not only breaks the arch, but can also be operated intermittently during non-feeding periods to slightly disturb the particle group in the middle and lower part of the storage hopper and break the micro-adhesive network formed by urea particles due to moisture absorption.

[0026] See Figure 4 and Figures 6-12 It is known that a drilling anti-clogging pusher assembly is provided at the center of the conical cylinder 18. The pusher assembly includes a drive shaft 17 that passes through the central axis of the conical cylinder 18. The drive shaft 17 is mounted on the inner wall of the top of the urea granule storage hopper 1 through a bearing. The drive shaft 17 and the synchronous wheel 24 form a welded structure. A drill rod 19 that rotates and rises and falls with the drive shaft 17 passes through the inside of the conical cylinder 18 through a bearing. An integrally formed conical drill bit 20 is connected to the bottom end of the drill rod 19 near the first discharge pipe 3.

[0027] In practice, when the drill rod 19 moves up and down along the axial direction, it will drive the conical drill bit 20 at the bottom of the drill rod 19 to rotate and move up and down, drilling and stirring the urea particles accumulated at the bottom of the urea particle storage hopper 1, breaking up the caking particles, and pushing the particles toward the No. 1 feed pipe 3 to avoid the particles from blocking the pipe opening and to assist gravity feeding.

[0028] See Figure 4 and Figures 6-12 It is known that the conical cylinder 18 is provided with a drive assembly for driving the drill rod 19 to rotate and rise. The drive assembly includes a square column shaft 21 that is slidably sleeved inside the shaft of the drill rod 19. The top end of the square column shaft 21 is connected to the transmission shaft 17 by bolts. The drill rod 19 is connected to two integrally formed cuboid connecting strips 27 on both sides of the inner side of the conical cylinder 18. A through groove is provided at the center of the turntable 804 for the drill rod 19 and the connecting strip 27 to slide through, and the through groove is adapted to the cross-sectional shape formed by the drill rod 19 and the connecting strip 27.

[0029] In practice, the drive shaft 17 drives the drill rod 19 to rotate via the square column shaft 21. The conical drill bit 20 at the bottom of the drill rod 19 rotates at the No. 1 feed pipe 3 at the bottom of the urea granule storage hopper 1, drilling into the urea granule pile, breaking up the formed caking or bridging granules, and promoting the downward flow of the granules. While the drill rod 19 rotates, it slides in the inclined annular groove 29 on the inner wall of the conical cylinder 18 via the spherical slider 28, so that the drill rod 19 moves up and down along the axis while rotating, realizing the rotational drilling and lifting action of the drill bit 20.

[0030] See Figures 9-12 It can be seen that the drill rod 19 is connected to a spherical slider 28 on one side above the turntable 804, and the inner wall of the conical cylinder 18 is provided with an annular groove 29 that allows the slider 28 to rotate and slide and is inclined. The turntable 804 is connected to a rotating ring 25 that is integrally formed and sleeved on the outside of the drill rod 19. The inner wall of the bottom end of the conical cylinder 18 is provided with a rotating groove 26 for the rotating ring 25 to rotate, and the cross-sectional shape of the rotating ring 25 and the rotating groove 26 are both T-shaped.

[0031] In practice, the connecting strip 27 on the drill rod 19 passes through the through groove at the center of the turntable 804, causing the turntable 804 to rotate synchronously. The rotating ring 25 below the turntable 804 rotates in the rotating groove 26 at the bottom of the conical cylinder 18. The T-shaped cross-section of the rotating ring 25 and the rotating groove 26 keeps the turntable 804 axially positioned during rotation, preventing the turntable 804 from moving up and down.

[0032] In summary, when using this integrated system for urea granule storage, urea dissolution, and urea solution storage, urea granules are added to the urea granule storage hopper 1 through the feed pipe, and flow into the urea dissolution chamber 14 by gravity through the first discharge pipe 3. The stirring component 9 stirs and accelerates the dissolution. The solution enters the solution storage chamber 15 through the second discharge pipe 13. The second heating plate component 16 provides zone heating, and the first heating cover component 12 provides heat preservation and moisture protection. The motor 11 drives the transmission shaft 17 to rotate through the synchronous wheel 24 and synchronous belt 23, which in turn drives the drill rod 19 to rotate and lift. The drill bit 20 breaks up the clumped granules, and the triangular protrusion of the turntable 804 squeezes the roller 801, causing the spring rod 802 to extend and retract. The conical spring head 22 impacts the granule pile, and the ratchet pushes the granules, all of which assist in gravity feeding. The contents not described in detail in this description are existing technologies known to those skilled in the art.

Claims

1. An integrated system for urea granule storage, urea dissolution, and urea solution storage, comprising a processing tank (2) located below the urea granule storage hopper (1), characterized in that: The urea granule storage hopper (1) and the processing box (2) are connected by a first feeding pipe (3) for gravity feeding. The processing box (2) has a urea dissolving chamber (14) and a solution storage chamber (15) distributed vertically inside. A temperature control module is provided on the outside of the urea dissolving chamber (14) and the solution storage chamber (15). The outer wall of the processing box (2) is equipped with a magnetic flip plate assembly (6) for detecting the contents of the urea dissolving chamber (14) and the solution storage chamber (15). A second feeding pipe (13) is connected between the urea dissolving chamber (14) and the solution storage chamber (15). A first heating cover assembly (12) is sleeved on the outside of the bottom end of the urea granule storage hopper (1). The top of the urea granule storage hopper (1) is fitted with a protective cover (10) by bolts. The protective cover (10) is equipped with a synchronous rotation component. A conical cylinder (18) is welded to the inner cavity of the urea granule storage hopper (1) near the first feed pipe (3) by a bracket. A spring mechanism (8) is installed on the outside of the conical cylinder (18) to promote the downward flow of urea granules by gravity. A drilling and anti-clogging push component is provided at the center of the conical cylinder (18). A drive component that drives the push component to rotate and lift is provided inside the conical cylinder (18).

2. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 1, characterized in that: The temperature control module includes a second heating plate assembly (16) nested in the outer cavity of the urea dissolution chamber (14) and the solution storage chamber (15). The two ends of the second heating plate assembly (16) are respectively connected to a steam heat transfer assembly (5) and a hydrophobic assembly (7) that penetrate the inner wall of the processing tank (2).

3. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 2, characterized in that: The outer side of the urea granule storage hopper (1) and the processing box (2) is connected to the frame (4) by bolts. The first heating cover assembly (12) is welded to the inner side of the frame (4). Automatic slide valves are installed inside the first discharge pipe (3) and the second discharge pipe (13). The urea dissolving chamber (14) is equipped with a stirring assembly (9) for stirring urea granules through bearings.

4. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 1, characterized in that: The feeding assembly includes a drive shaft (17) that passes through the central axis of the conical cylinder (18), and the drive shaft (17) is mounted on the inner wall of the top of the urea granule storage hopper (1) by bearings. The inside of the conical cylinder (18) is pierced by a drill rod (19) that rotates and rises and falls with the drive shaft (17). The bottom end of the drill rod (19) near the first feeding pipe (3) is connected to an integrally formed conical drill bit (20).

5. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 4, characterized in that: The synchronous rotation assembly includes a synchronous wheel (24) located inside the protective cover (10). A synchronous belt (23) is engaged with the outer side of the synchronous wheel (24). A motor (11) that drives the synchronous wheel (24) to rotate synchronously is installed on the outside of the protective cover (10) by bolts. The transmission shaft (17) and the synchronous wheel (24) form a welded structure.

6. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 1, characterized in that: The spring mechanism (8) includes a spring rod (802) that slides through the inner wall of the conical cylinder (18). The spring rod (802) is distributed in a ring outside the conical cylinder (18), and a ratchet bar that breaks the stationary surface of the particles is provided on the outer side of the spring rod (802). The end of the spring rod (802) located outside the conical cylinder (18) is connected to an integrally formed conical spring head (22).

7. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 6, characterized in that: The end of the spring rod (802) located inside the conical cylinder (18) is movably mounted with a roller (801) that drives the spring rod (802) to extend and retract laterally via a bearing. The outside of the spring rod (802) is fitted with a support spring (803) whose two ends abut against the roller (801) and the inner wall of the conical cylinder (18). The support spring (803) causes the spring rod (802) to elastically return to its original position. The rolling surface of the roller (801) is fitted with a turntable (804) sleeved on the outside of the drill rod (19). The outer side of the turntable (804) is provided with equally spaced annularly distributed triangular protrusions. The triangular protrusions squeeze the roller (801), causing the roller (801) to drive the spring rod (802) to slide laterally.

8. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 7, characterized in that: The drive assembly includes a square column shaft (21) that is slidably sleeved inside the shaft of the drill rod (19), and the top end of the square column shaft (21) is connected to the drive shaft (17) by bolts. The drill rod (19) is connected to two integrally formed cuboid connecting strips (27) on both sides of the inside of the conical cylinder (18). The turntable (804) has a through groove at the center for the drill rod (19) and the connecting strip (27) to slide through, and the through groove is compatible with the cross-sectional shape formed by the drill rod (19) and the connecting strip (27).

9. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 8, characterized in that: The drill rod (19) is connected to a spherical slider (28) on one side above the turntable (804). The inner wall of the conical cylinder (18) is provided with an annular groove (29) that allows the slider (28) to rotate and slide in an inclined manner.

10. The integrated system for urea granule storage, urea dissolution, and urea solution storage according to claim 9, characterized in that: The turntable (804) is connected to a rotating ring (25) that is integrally formed and sleeved on the outside of the drill rod (19). The inner wall of the bottom end of the conical cylinder (18) is provided with a rotating groove (26) for the rotating ring (25) to rotate. The cross-sectional shape of the rotating ring (25) and the rotating groove (26) are both T-shaped.

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