Urea synthesis reactor facilitating material feeding

Abstract

The utility model discloses a kind of urea synthesis reactor convenient to put material, belong to urea synthesis reaction equipment technical field.The utility model includes bottom plate, the both sides of bottom plate top are connected with support frame, adopt the double stirring rod set in stirring box to be driven under first motor to material is carried out sufficient pre-stirring, can scatter material lump and uniformly mix, avoid big particle or agglomerate material directly into feed pipe and cause blockage;The cooperation of baffle and fixed plate in dredging pipe provides stable sliding and screw connection structure for dredging rod, when lifting assembly drives dredging rod to move up and down, material under baffle can be mechanically dredged, effectively break material accumulation;The design of guide vane discharge port is located below baffle, after pre-stirring, material directly falls into the area below baffle, and the double effect of mechanical reciprocating motion and pre-stirring is passed through this structure, the smoothness of material putting is significantly improved, and the utility model structure has the advantages that the effect of anti-blocking is good.

Description

Technical Field

[0001] This utility model belongs to the technical field of urea synthesis reaction equipment, specifically a urea synthesis reactor that facilitates the feeding of materials. Background Technology

[0002] Utility model patent CN222196868U discloses a urea synthesis reactor that facilitates material feeding. It solves the problem of existing urea synthesis reactors where material feeding is easily blocked in the feed pipe, leading to inconvenience and waste. The new reactor uses a support rod to provide a mounting position for an electric motor, and then installs an impeller on the motor's output shaft. The motor's start-up drives the impeller to rotate inside the feed pipe, loosening the fed material and facilitating its flow into the reactor body for reaction, thus preventing blockage during feeding. In practical use, the aforementioned patent only uses an electric motor to rotate the impeller for unblocking, which can easily lead to impeller jamming and poor unblocking effect. Utility Model Content

[0003] To address the problems mentioned in the background section, the present invention aims to provide a urea synthesis reactor that facilitates material feeding and has the advantage of good anti-clogging performance.

[0004] This utility model provides the following technical solution: a urea synthesis reactor that facilitates material feeding, comprising a bottom plate, with support frames fixedly connected to both sides of the top of the bottom plate, a reactor body fixedly connected inside the support frames, a discharge valve connected to the bottom of the reactor body, a feed pipe connected to the top of the reactor body, a drain pipe fixedly connected to the top of the feed pipe, a partition fixedly connected to the inner wall of the drain pipe, a fixed plate fixedly connected inside the drain pipe, a drain rod slidably connected inside the partition, the drain rod being threadedly connected to the fixed plate, a lifting assembly provided on the top of the fixed plate, a mixing tank provided above the reactor body, stirring rods rotatably connected to both sides inside the mixing tank, a first motor fixedly connected to both sides of the front of the mixing tank, the output end of the first motor being fixedly connected to the stirring rods, a guide pipe connected to the bottom of the mixing tank, the guide pipe being connected to the drain pipe, and the outlet of the guide pipe being located below the partition.

[0005] The lifting assembly includes a limiting frame fixedly connected to the top of the fixed plate. A movable block is slidably connected inside the limiting frame. The movable block is rotatably connected to the unblocking rod. A second motor is fixedly connected to the right side of the limiting frame via a bracket. A turntable is fixedly connected to the output end of the second motor. A connecting rod is rotatably connected to the surface of the turntable. The end of the connecting rod away from the turntable is hinged to the movable block.

[0006] The beneficial effects of this utility model are as follows:

[0007] 1. This utility model adopts a coordinated design of a base plate, support frame, reactor body, discharge valve, feed pipe, unblocking pipe, partition plate, fixing plate, unblocking rod, lifting assembly, mixing box, mixing rod, first motor and guide pipe, which effectively solves the problem of easy blockage during material feeding. The dual stirring rods inside the mixing tank, driven by the first motor, thoroughly pre-stir the material, breaking up clumps and mixing them evenly, preventing large particles or lumps from directly entering the feed pipe and causing blockages. The cooperation between the baffle and the fixed plate inside the unblocking pipe provides a stable sliding and threaded connection structure for the unblocking rods. When the lifting component drives the unblocking rods up and down, it can mechanically unblock the material below the baffle, effectively breaking up material accumulation. The design of the discharge port of the guide pipe located below the baffle allows the pre-stirred material to fall directly into the area below the baffle. Combined with the real-time unblocking by the unblocking rods, it forms an integrated anti-blocking process of "pre-stirring-conveying-unblocking". Compared with the existing technology that relies solely on rotating impellers for unblocking, this structure significantly improves the smoothness of material feeding and reduces the probability of blockage through the dual effects of mechanical reciprocating motion and pre-stirring. At the same time, the tight connection and reasonable structure of each component ensure the stability of equipment operation and effectively improve the production efficiency of urea synthesis reaction. This utility model structure has the advantage of good anti-blocking effect.

[0008] 2. This utility model, through the structural design of a limiting frame, a movable block, a second motor, a turntable, and a connecting rod, provides a stable and reliable power source and transmission mechanism for the unblocking rod. The limiting frame's sliding limit on the movable block ensures that the movable block can only move in the vertical direction, preventing the unblocking rod from deviating during lifting and lowering, and ensuring the accuracy of the unblocking action. When the second motor drives the turntable to rotate, the rotational motion is converted into the up-and-down reciprocating motion of the movable block through the connecting rod. Compared with linear motors or cylinder drives, this transmission method has the characteristics of simple structure, low cost, and smooth transmission, which can effectively control the lifting speed and stroke of the unblocking rod, avoiding damage to materials or equipment due to excessive impact force. The rotating connection design between the movable block and the unblocking rod allows the unblocking rod to rotate slightly according to the material resistance when moving up and down, further reducing the jamming phenomenon during the unblocking process. Through the above structure, the lifting assembly can accurately and stably drive the unblocking rod to unblock the material. Compared with the problem of blockage and jamming caused by the single rotating impeller in the existing technology, the mechanical reciprocating unblocking method of this solution is more adaptable and the unblocking effect is more reliable, effectively ensuring the continuity of material feeding in the urea synthesis reactor. In application, a protective cover can be set on the top of the fixed plate to cover the limit frame, movable block, second motor, turntable and connecting rod, so as to prevent the operator from accidentally touching the above structure and getting injured. The protective cover is a common existing technology and is not shown in this application. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 This is a front sectional view of the structure of the unblocking pipe and mixing tank of this utility model.

[0011] Figure 3 This is a schematic diagram of the unblocking rod structure of this utility model.

[0012] Figure 4 This is a schematic diagram of the support pad structure of this utility model.

[0013] Figure 5 This is a front sectional view of the mixing tank structure of this utility model.

[0014] Figure 6 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figures 1 to 6As shown, the urea synthesis reactor of this embodiment includes a bottom plate 1. Support frames 2 are fixedly connected to both sides of the top of the bottom plate 1. A reactor body 3 is fixedly connected inside the support frames 2. A discharge valve 5 is connected to the bottom of the reactor body 3, and a feed pipe 4 is connected to the top of the reactor body 3. A drain pipe 6 is fixedly connected to the top of the feed pipe 4. A partition 7 is fixedly connected to the inner wall of the drain pipe 6. A fixing plate 9 is fixedly connected inside the drain pipe 6. A drain rod 8 is slidably connected inside the partition 7. The drain rod 8 is threadedly connected to the fixing plate 9. A lifting assembly 10 is provided on the top of the fixing plate 9. A [unclear text - possibly a device or structure] is provided above the reactor body 3. The mixing tank 11 has stirring rods 12 rotatably connected to both sides inside. The front sides of the mixing tank 11 are fixedly connected to the first motor 13, and the output end of the first motor 13 is fixedly connected to the stirring rod 12. The bottom of the mixing tank 11 is connected to the guide pipe 14, which is connected to the unblocking pipe 6. The outlet of the guide pipe 14 is located below the partition 7. The surface of the unblocking rod 8 is provided with a threaded area, and the threaded area is threadedly connected to the fixed plate 9. The threaded area is located above the partition 7. The function of the partition 7 is to prevent materials from adhering to the surface of the threaded area and to ensure that the unblocking rod 8 can slide stably up and down.

[0017] refer to Figure 2 The lifting assembly 10 includes a limiting frame 15 fixedly connected to the top of the fixed plate 9. A movable block 16 is slidably connected inside the limiting frame 15. The movable block 16 is rotatably connected to the unblocking rod 8. A second motor 17 is fixedly connected to the right side of the limiting frame 15 via a bracket. A turntable 18 is fixedly connected to the output end of the second motor 17. A connecting rod 19 is rotatably connected to the surface of the turntable 18. The end of the connecting rod 19 away from the turntable 18 is hinged to the movable block 16.

[0018] This embodiment, through the structural design of the limiting frame 15, movable block 16, second motor 17, turntable 18, and connecting rod 19, provides a stable and reliable power source and transmission mechanism for the unblocking rod 8. The limiting frame 15 slides and limits the movable block 16, ensuring that the movable block 16 can only move in the vertical direction, preventing the unblocking rod 8 from deviating during the lifting and lowering process, and ensuring the accuracy of the unblocking action. When the second motor 17 drives the turntable 18 to rotate, the rotational motion is converted into the up-and-down reciprocating motion of the movable block 16 through the connecting rod 19. Compared with linear motor or cylinder drive, this transmission method has the characteristics of simple structure, low cost, and smooth transmission, which can effectively control the lifting speed and stroke of the unblocking rod 8 and avoid damage to materials or equipment due to excessive impact force. The rotating connection design between the movable block 16 and the unblocking rod 8 allows the unblocking rod 8 to rotate slightly according to the material resistance when moving up and down, further reducing the jamming phenomenon during the unblocking process. Through the above structure, the lifting component 10 can accurately and stably drive the unblocking rod 8 to unblock the material. Compared with the problem of blockage and jamming caused by a single rotating impeller in the existing technology, the mechanical reciprocating unblocking method of this solution is more adaptable and the unblocking effect is more reliable, effectively ensuring the continuity of material feeding in the urea synthesis reactor.

[0019] refer to Figure 1 A sealing cover 21 is hinged to the back of the top of the mixing tank 11, and a handle is fixedly connected to the top of the sealing cover 21.

[0020] This embodiment significantly improves the sealing performance and operational convenience of the material feeding process by incorporating a sealing cover 21 and a handle on the top of the mixing tank 11. The sealing cover 21 is hinged to the mixing tank 11, completely covering the top opening when closed. This effectively prevents splashing caused by stirring or conveying during material feeding, avoiding waste and preventing external dust and impurities from entering the mixing tank 11 and contaminating the material, thus ensuring material purity. The handle design allows operators to manually open or close the sealing cover 21, reducing operational difficulty and improving feeding efficiency compared to a handle-less structure. Furthermore, the sealing cover 21 reduces the contact area between the material and air, providing protection for materials that are easily hygroscopic or oxidized, extending their effective service life, and further enhancing the practicality and economy of the urea synthesis reactor. The sealing cover 21 and the mixing tank 11 can be fixed using magnetic attraction or mechanical locking methods, which will not be detailed in this application.

[0021] refer to Figure 1 A mounting frame 22 is fixedly connected to the top of the reactor body 3, and the mounting frame 22 is fixedly connected to the mixing tank 11.

[0022] In this embodiment, the reactor body 3 and the mixing tank 11 are fixedly connected by the mounting bracket 22, which effectively enhances the installation stability of the mixing tank 11. The mounting bracket 22 is made of rigid material, with one end fixed to the top of the reactor body 3 and the other end connected to the outer wall of the mixing tank 11, forming a reliable support structure that can withstand the weight of the material in the mixing tank 11 and the vibration generated during the mixing process, preventing the mixing tank 11 from loosening, shifting, or even falling off due to long-term stress or vibration. This fixed connection method keeps the relative position of the mixing tank 11 and the reactor body 3 constant, ensuring a stable connection between the guide pipe 14 and the unblocking pipe 6, and preventing material conveying obstruction or leakage due to positional shift. At the same time, the mounting bracket 22 simplifies the overall structure of the equipment, reduces the use of additional support components, and lowers the equipment cost. With the fixing effect of the mounting bracket 22, the mixing box 11 can always maintain precise docking with the reactor body 3, providing structural guarantee for the continuous and smooth feeding of materials, effectively improving the operational reliability of the urea synthesis reactor. The inner wall of the guide pipe 14 is smooth, which facilitates the smooth passage of materials through the guide pipe 14 and avoids blockage of the guide pipe 14. At the same time, by controlling the rotation speed of the stirring rod 12, the falling speed of the materials can be controlled to a certain extent, thereby preventing a large amount of materials from rushing into the guide pipe 14 in a short period of time, thus preventing blockage of the guide pipe 14.

[0023] refer to Figure 1 Sleeves 23 are fixedly connected to all four sides of the bottom of the base plate 1. A threaded rod 24 is threaded inside the sleeve 23. A support pad 25 is rotatably connected to the bottom of the threaded rod 24.

[0024] This embodiment, through the design of the bottom sleeve 23, threaded rod 24, and support pad 25 of the base plate 1, endows the urea synthesis reactor with height adjustment and ground adaptability. The threaded connection structure between the sleeve 23 and the threaded rod 24 allows adjustment of the length of the threaded rod 24 extending beyond the sleeve 23 by rotating it, thereby adjusting the levelness and overall height of the base plate 1. This adapts to uneven installation surfaces and prevents vibration or displacement of the equipment during operation due to ground inclination. The rotating connection design between the support pad 25 and the bottom of the threaded rod 24 allows the support pad 25 to automatically adjust its contact angle according to the ground shape, increasing the contact area with the ground, improving support stability, and reducing shaking during equipment operation. In addition, adjusting the height of the threaded rod 24 facilitates the installation, inspection, and maintenance of the equipment, reducing operational difficulty. Compared with traditional reactors with fixed bases, the adjustable support design of this structure significantly improves the adaptability of the equipment to complex installation environments, ensures stable operation of the reactor under different working conditions, and effectively extends the service life of the equipment.

[0025] refer to Figure 2 Both sides of the inner wall of the mixing tank 11 are fixedly connected with guide blocks 20.

[0026] This embodiment optimizes the flow path of materials within the mixing tank 11 by incorporating guide blocks 20 on the inner wall of the mixing tank 11, effectively reducing material residue and blockage. The guide blocks 20 feature an inclined surface design with a smooth surface and are fixedly connected to the inner wall of the mixing tank 11. This guide blocks 20 direct materials along their inclined direction to the inlet of the guide pipe 14, preventing material accumulation at corners or uneven areas of the mixing tank 11. The symmetrical arrangement of the guide blocks 20 ensures more uniform material flow within the mixing tank 11, reducing the probability of localized material accumulation. Combined with the pre-stirring action of the stirring rod 12, this further enhances the smoothness of material transport. Furthermore, the structure of the guide blocks 20 strengthens the inner wall of the mixing tank 11, reducing deformation caused by material impact and extending the service life of the mixing tank 11. Through the guiding effect of the guide blocks 20, materials can enter the guide pipe 14 more efficiently from the mixing tank 11, reducing the residence time and residue within the mixing tank 11, effectively preventing blockage caused by material accumulation, and improving the material feeding efficiency of the urea synthesis reactor.

[0027] refer to Figure 1 The movable block 16 is internally fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the movable block 16, while the inner ring of the bearing is fixedly connected to the unblocking rod 8.

[0028] This embodiment optimizes the connection between the unblocking rod 8 and the movable block 16 by incorporating an internal bearing in the movable block 16, thereby enhancing the flexibility of the unblocking rod 8's movement. The structure, where the inner ring of the bearing is fixed to the unblocking rod 8 and the outer ring to the movable block 16, allows the unblocking rod 8 to rotate freely around its own axis as it moves up and down with the movable block 16. When the unblocking rod 8 encounters resistance from the material, the rotational motion reduces the frictional resistance between the unblocking rod 8 and the material, preventing unblocking failure due to jamming. The rolling friction of the bearing replaces the sliding friction of the traditional sliding connection, significantly reducing energy loss during the movement of the unblocking rod 8 and improving the transmission efficiency of the lifting assembly 10. Simultaneously, the bearing design reduces wear between the unblocking rod 8 and the movable block 16, extending their service life and reducing equipment maintenance costs. Through the rotating connection design of the bearing, the unblocking rod 8 can more flexibly adapt to material resistance, ensuring the continuity and effectiveness of the unblocking action and further improving the anti-clogging performance of the urea synthesis reactor.

[0029] refer to Figure 1 The front and rear sides of the right side of the support frame 2 are fixedly connected with reinforcing blocks, which are fixedly connected to the base plate 1.

[0030] This embodiment enhances the connection strength between the support frame 2 and the base plate 1 by incorporating reinforcing blocks, thereby improving the overall stability of the reactor structure. The reinforcing blocks employ a triangular stabilizing structure, with one side fixed to the right side of the support frame 2 and the other side fixed to the top of the base plate 1, forming a triangular support structure. This effectively distributes the load borne by the support frame 2, reducing stress concentration at the connection between the support frame 2 and the base plate 1. The symmetrical arrangement of the front and rear sides of the reinforcing blocks ensures more even force distribution on the support frame 2 in the front-rear direction, preventing deformation or breakage due to excessive force on one side. Furthermore, the reinforcing blocks improve the impact resistance of the support frame 2. When the reactor body 3 vibrates due to material feeding or the reaction process, the reinforcing blocks absorb some of the vibration energy, reducing the impact of vibration on the connection between the support frame 2 and the base plate 1. Through the reinforcement effect of the reinforcing blocks, the support frame 2 can more stably support the reactor body 3, ensuring the structural reliability of the equipment during long-term operation, effectively reducing equipment failures caused by structural deformation, and improving the operational safety of the urea synthesis reactor.

[0031] This invention first involves equipment installation and debugging. The base plate 1 is placed on a flat surface. By rotating the threaded rod 24 inside the sleeve 23 around the bottom of the base plate 1, the extension length of the threaded rod 24 is adjusted so that the support pad 25 is completely in contact with the ground, ensuring the equipment is level and stable. Simultaneously, the connection between the reinforcing blocks on the front and rear right sides of the support frame 2 and the base plate 1 is checked to ensure the reactor body 3 is securely installed. Next, the sealing cover 21 on the top of the mixing tank 11 is opened. By lifting the cover with the handle, the material to be added is poured into the mixing tank 11. After the material falls into the mixing tank 11, the guide blocks 20 on both sides of the inner wall of the mixing tank 11 guide the material to gather towards the center. Then, the sealing cover 21 is closed to ensure that there is no splashing during material addition and that external impurities cannot enter.

[0032] The first motor 13 drives the stirring rods 12 on both sides of the mixing tank 11 to rotate synchronously, but the two stirring rods 12 rotate in opposite directions, pre-stirring the material in the mixing tank 11. The rotation of the stirring rods 12 breaks up material clumps and achieves uniform mixing, preventing large particles or lumps from directly entering the guide pipe 14 and causing blockage. During the stirring process, the stirring intensity and the falling speed of the material can be adjusted by controlling the speed of the first motor 13. After pre-stirring, the material enters the unblocking pipe 6 through the guide pipe 14 at the bottom of the mixing tank 11. Since the outlet of the guide pipe 14 is located below the partition 7 inside the unblocking pipe 6, the material falls directly into the area below the partition 7.

[0033] At this time, the second motor 17 is started, driving the turntable 18 to rotate. The turntable 18 drives the movable block 16 inside the limit frame 15 to slide up and down repeatedly via the connecting rod 19. The movable block 16 and the unblocking rod 8 are rotatably connected by bearings. During the lifting and lowering of the movable block 16, the unblocking rod 8 slides along the inside of the partition 7 and engages with the threaded connection of the fixed plate 9, so that the unblocking rod 8 will rotate back and forth during the up and down reciprocating movement, thereby mechanically unblocking the material below the partition 7 and breaking up the material accumulation. When the unblocking rod 8 moves down, the bottom of the unblocking rod 8 will insert into the lower part of the feed pipe 4, thereby also unblocking the feed pipe 4.

[0034] After the material enters the reactor body 3 through the feed pipe 4, the first motor 13 and the second motor 17 are shut off, and the stirring and unblocking operations are stopped. After the urea synthesis reaction is completed, the discharge valve 5 at the bottom of the reactor body 3 is opened to discharge the reacted material. The reactor body 3 described above is similar in principle to the reactor body mentioned in the utility model patent disclosed in publication (announcement) number: CN222196868U, which discloses a urea synthesis reactor that facilitates material feeding, and achieves the same effect. Therefore, this application will not elaborate further.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A urea synthesis reactor that facilitates material feeding, comprising a bottom plate (1), characterized in that: Support frames (2) are fixedly connected to both sides of the top of the base plate (1). The reactor body (3) is fixedly connected inside the support frame (2). The bottom of the reactor body (3) is connected to a discharge valve (5). The top of the reactor body (3) is connected to a feed pipe (4). A drain pipe (6) is fixedly connected to the top of the feed pipe (4). A partition (7) is fixedly connected to the inner wall of the drain pipe (6). A fixing plate (9) is fixedly connected inside the drain pipe (6). A drain rod (8) is slidably connected inside the partition (7). The drain rod (8) and the fixing plate (9) are connected to each other. The fixed plate (9) is threaded and has a lifting assembly (10) on top. The reactor body (3) is equipped with a stirring box (11) on top. Both sides of the stirring box (11) are rotatably connected to stirring rods (12). Both sides of the front of the stirring box (11) are fixedly connected to a first motor (13). The output end of the first motor (13) is fixedly connected to the stirring rods (12). The bottom of the stirring box (11) is connected to a guide pipe (14). The guide pipe (14) is connected to the unblocking pipe (6). The outlet of the guide pipe (14) is located below the partition plate (7).

2. The urea synthesis reactor according to claim 1, characterized in that: The lifting assembly (10) includes a limiting frame (15) fixedly connected to the top of the fixed plate (9). A movable block (16) is slidably connected inside the limiting frame (15). The movable block (16) is rotatably connected to the unblocking rod (8). A second motor (17) is fixedly connected to the right side of the limiting frame (15) via a bracket. A turntable (18) is fixedly connected to the output end of the second motor (17). A connecting rod (19) is rotatably connected to the surface of the turntable (18). The end of the connecting rod (19) away from the turntable (18) is hinged to the movable block (16).

3. The urea synthesis reactor according to claim 2, characterized in that: A sealing cover (21) is hinged to the back of the top of the mixing tank (11), and a handle is fixedly connected to the top of the sealing cover (21).

4. A urea synthesis reactor for easy material feeding according to claim 3, characterized in that: The top of the reactor body (3) is fixedly connected to a mounting frame (22), which is fixedly connected to the mixing tank (11).

5. A urea synthesis reactor for easy material feeding according to claim 4, characterized in that: Sleeves (23) are fixedly connected to the bottom of the base plate (1) around its perimeter. A threaded rod (24) is threaded inside the sleeve (23), and a support pad (25) is rotatably connected to the bottom of the threaded rod (24).

6. A urea synthesis reactor for easy material feeding according to claim 5, characterized in that: Both sides of the inner wall of the mixing tank (11) are fixedly connected to guide blocks (20).

7. A urea synthesis reactor for easy material feeding according to claim 6, characterized in that: The movable block (16) is internally fixedly connected to a bearing, and the outer ring of the bearing is fixedly connected to the movable block (16), and the inner ring of the bearing is fixedly connected to the unblocking rod (8).

8. A urea synthesis reactor for easy material feeding according to claim 7, characterized in that: The support frame (2) has a reinforcing block fixedly connected to the front and rear sides on the right side, and the reinforcing block is fixedly connected to the base plate (1).

Images