Feeding device for urea production
By introducing a screw conveyor shaft and telescopic mechanism into the urea production feeding device, the problems of raw material blockage and adaptability were solved, achieving smooth conveying and flexible adjustment to meet the feeding port requirements of different reactors.
Patent Information
- Application Number
- CN202520609039.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-04-02
AI Technical Summary
Existing urea production feeding devices are prone to clogging, and their height and angle are not adjustable, resulting in poor performance and inability to adapt to the feed inlets of different types of reactors.
A feeding device including first and second spiral conveyor shafts is designed. The spiral conveyor shafts are driven to rotate by a drive motor. The height and angle of the discharge pipe are adjusted by a telescopic mechanism and a limiting roller to ensure smooth material conveying. The discharge pipe can also be adjusted to match the feed port of the reactor.
It enables smooth material transport, avoids blockages, and can adapt to the feed inlets of different types of reactors, thus improving its effectiveness and applicability.
Smart Images
Figure CN223935826U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of feeding device technology, and in particular to a feeding device for urea production. Background Technology
[0002] A feeding device for urea production is a device that transports raw materials to a reaction vessel via a conveying mechanism during the urea preparation process.
[0003] Existing urea production systems typically use auger conveyors to transport raw materials into the reactor. During this process, workers pour the raw materials into hoppers, which then pass through the hoppers to the auger for further transport. However, because the raw materials fall from the hoppers into the auger solely by gravity, they can clog the hopper's discharge port, hindering feeding and resulting in poor performance. Some feeding mechanisms install vibratory motors on the outside of the hoppers to prevent blockage, but the vibrations can damage components, further impairing the feeding mechanism and leading to poor performance. Furthermore, the auger conveyor is usually welded to a support frame, making the feeding height and angle unadjustable. When feeding different types of reactors, the discharge pipe on the feeding equipment may not match the inlet position on the reactor, resulting in poor performance.
[0004] Therefore, we provide a feeding device for urea production. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned technical problems by providing a feeding device for urea production. This device allows for adjustment of the height and tilt angle of the discharge pipe according to the model of the reactor. It also enables the conveying of raw materials via a first and a second spiral conveyor shaft without causing blockages.
[0006] In view of this, the present invention provides a feeding device for urea production, including a hopper, the bottom of which is connected to a base via support legs, a feeding mechanism at one end of the bottom of the hopper, the feeding mechanism including a conveying cylinder, one side of which is rotatably connected to the sides of two support legs via a connecting shaft, and the side of which is connected to the bottom of the hopper via a discharge pipe, and a discharge pipe is installed at the bottom of the other end of the conveying cylinder.
[0007] The conveying cylinder is coaxially rotatably connected to a second spiral conveying shaft. One end of the second spiral conveying shaft passes through the bottom of the conveying cylinder and is connected to the rotating shaft through a universal joint. A mounting plate is connected between the two legs located at the same end, and one end of the rotating shaft is rotatably connected to the side of the mounting plate.
[0008] The bottom of the hopper is rotatably connected to a first spiral conveyor shaft, and one end of the rotating shaft and one end of the first spiral conveyor shaft are both connected by a drive mechanism.
[0009] The base is also provided with an adjustment mechanism at its top. The adjustment mechanism includes a bracket fixed to the top of the base, and a telescopic mechanism is installed at the top of the bracket. A U-shaped frame is installed at the top of the telescopic mechanism. The conveying cylinder passes through the U-shaped frame and is connected to the U-shaped frame through a limiting mechanism.
[0010] Preferably, the feed pipe is made of a retractable corrugated pipe.
[0011] Preferably, the limiting mechanism includes a pair of strip-shaped limiting plates installed on both sides of the conveying cylinder, and limiting rollers are rotatably connected to both sides inside the U-shaped frame, with one end of each limiting roller extending between each pair of strip-shaped limiting plates.
[0012] Preferably, the edge of the first spiral conveyor shaft is clearance-fitted with the inner side of the hopper, and the edge of the second spiral conveyor shaft is clearance-fitted with the inner wall of the conveying cylinder.
[0013] Preferably, a connecting pipe is fitted onto one end of the discharge pipe, and two connecting rings are installed on the side of one end of the connecting pipe. Each connecting ring and one end of the connecting pipe have an opening groove. Two arc-shaped pipe clamps are also symmetrically arranged on the side of the connecting pipe. The arc-shaped pipe clamps are located between the two connecting rings, and each arc-shaped pipe clamp has connecting blocks extending from both ends. The two connecting blocks located on the same side are fastened together by bolts. When the bolts are tightened, the opening grooves are closed, and the inner wall of the connecting pipe is tightly pressed against the outer side of the discharge pipe.
[0014] Preferably, the side of each of the arc-shaped pipe clamps abuts against the adjacent surfaces of the two connecting rings.
[0015] Preferably, there is a gap between the bottom end of the second spiral conveying shaft and the universal joint and the top of the base.
[0016] Preferably, at least one guide rod is vertically installed at the bottom of the U-shaped frame, and the bottom of the guide rod slides through the top of the frame.
[0017] Preferably, the side of each limiting roller is rotatably connected to one side of one of the two adjacent strip limiting plates.
[0018] Preferably, the drive mechanism includes a first pulley mounted on one end of both the rotating shaft and the first spiral conveying shaft, and a second pulley rotatably connected to one side of the mounting plate. One end of the second pulley is connected to the drive motor through a gearbox. The drive motor is fixed on the side of the mounting plate, and the second pulley is connected to the two first pulleys through a belt.
[0019] Compared with the prior art, the present invention provides a feeding device for urea production, which has the following beneficial effects:
[0020] 1. This utility model, by setting a first spiral conveying shaft in the hopper and a second spiral conveying shaft in the conveying cylinder, and by connecting the first spiral conveying shaft and the second spiral conveying shaft to the drive motor through a first pulley and a second pulley, can transport the raw materials in the hopper to the reaction vessel through the first spiral conveying shaft and the second spiral conveying shaft, so that the raw materials will not be blocked during the feeding process, thus improving the use effect;
[0021] 2. This utility model can push the U-shaped frame to move vertically through the telescopic mechanism, and then drive the conveying cylinder to rotate along the connecting shaft with the cooperation of the limiting roller and the strip limiting plate. This allows the height and tilt angle of the discharge pipe to be adjusted so that the discharge pipe can be matched with the feed port on different models of reactors, thereby improving the performance.
[0022] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description
[0023] Figure 1 This utility model provides a schematic diagram of the overall structure of a feeding device for urea production. Figure 1 ;
[0024] Figure 2 This utility model provides a schematic diagram of the overall structure of a feeding device for urea production. Figure 2 ;
[0025] Figure 3 This is a side view of a feeding device for urea production proposed in this utility model;
[0026] Figure 4 This is a schematic diagram of the connecting pipe structure of a feeding device for urea production proposed in this utility model;
[0027] Figure 5 This is a schematic diagram of the connection structure between the drive motor, the first spiral conveyor shaft, and the second spiral conveyor shaft of a feeding device for urea production proposed in this utility model.
[0028] In the diagram: 1. Base; 2. Mounting plate; 3. Rotating shaft; 4. Universal joint; 5. Support leg; 6. Hopper; 7. Limiting roller; 8. Strip-shaped limiting plate; 9. Conveying cylinder; 10. Discharge pipe; 11. Arc-shaped pipe clamp; 12. Connecting pipe; 13. U-shaped frame; 14. Guide rod; 15. Bracket; 16. Telescopic mechanism; 17. Discharge pipe; 18. First pulley; 19. Second pulley; 20. Connecting block; 21. Drive motor; 22. Connecting shaft; 23. First spiral conveying shaft; 24. Second spiral conveying shaft; 25. Opening slot; 26. Connecting ring; 27. Bolt. Detailed Implementation
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0030] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] A feeding device for urea production, such as Figures 1-5 As shown, the device includes a hopper 6, the bottom of which is connected to the base 1 via support legs 5. Workers can put urea raw materials into the hopper 6. A feeding mechanism is provided at one end of the bottom of the hopper 6. The feeding mechanism includes a conveying cylinder 9 located below the hopper 6. One side of the conveying cylinder 9 is rotatably connected to the sides of two support legs 5 located at the same end via a connecting shaft 22. The side of the conveying cylinder 9 is also connected to the bottom of the hopper 6 via a discharge pipe 17. A discharge pipe 10 is installed at the bottom of the other end of the conveying cylinder 9. The raw materials in the hopper 6 can be discharged into the conveying cylinder 9 through the discharge pipe 10 for conveying.
[0032] like Figure 2 and Figure 5As shown, a second spiral conveying shaft 24 is coaxially rotatably connected inside the conveying cylinder 9. One end of the second spiral conveying shaft 24 passes through the bottom of the conveying cylinder 9 and is connected to the rotating shaft 3 via a universal joint 4. Two support legs 5 located at the same end are connected by a mounting plate 2. One end of the rotating shaft 3 is rotatably connected to the side of the mounting plate 2. A first spiral conveying shaft 23 is rotatably connected to the bottom of the hopper 6. One end of the first spiral conveying shaft 23 passes through one end of the hopper 6. Both the rotating shaft 3 and the first spiral conveying shaft 23 are equipped with a first pulley 18. A second pulley 19 is rotatably connected to one side of the mounting plate 2. One end of the second pulley 19 is connected to the drive motor 21 through a gearbox. The drive motor 21 is fixed on the side of the mounting plate 2. The second pulley 19 is connected to the two first pulleys 18 through a belt. The drive motor 21 can drive the second pulley 19 to rotate. Under the action of the second pulley 19 and the first pulleys 18, the first spiral conveyor shaft 23 and the second spiral conveyor shaft 24 can be driven to rotate synchronously. The first spiral conveyor shaft 23 can transport the raw material into the conveying cylinder 9, and then the second spiral conveyor shaft 24 can transport the raw material to the discharge pipe 10, and then transport it into the reaction vessel for reaction processing through the discharge pipe 10.
[0033] like Figure 1 and Figure 2 As shown, an adjustment mechanism is also installed on the top of the base 1. The adjustment mechanism includes a bracket 15 fixed to the top of the base 1. The bracket 15 is located below the conveying cylinder 9, and a telescopic mechanism 16 is installed on the top of the bracket 15. A U-shaped frame 13 is installed on the top of the telescopic mechanism 16. The conveying cylinder 9 passes through the U-shaped frame 13. The telescopic mechanism 16 is one of an electric push rod, a cylinder, or a hydraulic rod. At least one guide rod 14 is vertically installed on the bottom of the U-shaped frame 13. The bottom of the guide rod 14 slides through the top of the bracket 15. The guide rod 14 can limit the U-shaped frame 13, so that the U-shaped frame 13 remains stable. The two sides of the conveying cylinder 9 Each side is equipped with a pair of strip-shaped limiting plates 8, and the U-shaped frame 13 has rotatably connected limiting rollers 7 on both sides. One end of each limiting roller 7 extends between each pair of strip-shaped limiting plates 8. In use, the extension and retraction of the telescopic mechanism 16 can push the conveying cylinder 9 to rotate along the connecting shaft 22, thereby adjusting the height and tilt angle of the conveying cylinder 9 and the discharge pipe 10. The discharge pipe 10 can be adjusted to a position that matches the feed inlet of the reactor, facilitating material feeding. The discharge pipe 17 is made of a telescopic corrugated pipe, so that the discharge pipe 17 will extend and retract with the rotation of the conveying cylinder 9, thus not obstructing the material discharged from the hopper 6 into the conveying cylinder 9.
[0034] like Figure 3 As shown, there is a gap between the bottom end of the second spiral conveying shaft 24 and the universal joint 4 and the top of the base 1. When the telescopic mechanism 16 pushes the conveying cylinder 9 to rotate along the connecting shaft 22, the second spiral conveying shaft 24 and the universal joint 4 will not collide with the base 1.
[0035] Each limiting roller 7 is rotatably connected to one of the two adjacent strip limiting plates 8. When the telescopic mechanism 16 is telescopic, the limiting roller 7 will move along the strip limiting plate 8. During the movement, the limiting roller 7 will roll along one of the strip limiting plates 8 to reduce the friction when the limiting roller 7 moves.
[0036] like Figure 1 and Figure 4 As shown, a connecting pipe 12 is fitted onto one end of the discharge pipe 10. Two connecting rings 26 are installed on the side of one end of the connecting pipe 12. Each connecting ring 26 and one end of the connecting pipe 12 have an opening groove 25. Two arc-shaped pipe clamps 11 are symmetrically arranged on the side of the connecting pipe 12, located between the two connecting rings 26. The side of each arc-shaped pipe clamp 11 abuts against the adjacent surfaces of the two connecting rings 26. This confines the arc-shaped pipe clamp 11 between the two connecting rings 26, preventing it from moving along the connecting pipe 12 during use. Furthermore, each arc-shaped pipe clamp 11... Both ends are provided with connecting blocks 20. The two connecting blocks 20 on the same side are fastened together by bolts 27. When the bolts 27 are tightened, the opening slot 25 is closed, and the inner wall of the connecting pipe 12 is tightly pressed against the outer side of the discharge pipe 10. After the position of the discharge pipe 10 is adjusted, the operator can loosen the bolts 27, the opening slot 25 opens, and the operator can move the connecting pipe 12 along the discharge pipe 10 so that one end of the connecting pipe 12 is connected to the feed port on the reactor. This connects the discharge pipe 10 to the feed port of the reactor, improving the efficiency of use.
[0037] It should be noted that the edge of the first spiral conveyor shaft 23 is clearance-fitted with the inner side of the hopper 6, and the edge of the second spiral conveyor shaft 24 is clearance-fitted with the inner wall of the conveying cylinder 9. In this way, the first spiral conveyor shaft 23 will not be worn by the inner wall of the hopper 6 when it rotates, and the second spiral conveyor shaft 24 will not be worn by the inner wall of the conveying cylinder 9 when it rotates.
[0038] In use, the operator controls the telescopic mechanism 16 to extend and retract. The telescopic mechanism 16 drives the U-shaped frame 13 to move vertically. Simultaneously, the U-shaped frame 13 drives the limiting roller 7 to move. When the limiting roller 7 moves, it cooperates with the strip-shaped limiting plate 8, thereby driving the conveying cylinder 9 to rotate along the connecting shaft 22. This allows the discharge pipe 10 on the conveying cylinder 9 to be adjusted according to the height of the reactor and the inclination angle of the reactor's feed inlet. After the discharge pipe 10 is adjusted to the preset position, the operator can move the base 1 to the preset position so that the end of the discharge pipe 10 is aligned with the feed inlet on the reactor. Then, the operator loosens the bolt 27 to release the arc-shaped pipe clamp 11 and open the opening slot 25. The operator then moves the connecting pipe 12 to contact and fix one end of the connecting pipe 12 with the reactor feed inlet. Finally, the operator tightens the bolt 27 to release the two arc-shaped pipe clamps 11. The opening groove 25 is compressed and closed, fixing the connecting pipe 12 to the discharge pipe 10, completing the connection. Then, the operator puts the urea raw material into the silo 6 and controls the drive motor 21 to work. The drive motor 21 drives the second pulley 19 to rotate, and the second pulley 19 drives the two first pulleys 18 to rotate via a belt. The two first pulleys 18 drive the first spiral conveyor shaft 23 and the second spiral conveyor shaft 24 to rotate respectively. The first spiral conveyor shaft 23 transports the raw material in the silo 6 to the discharge pipe 17 and then along the discharge pipe 17 to the conveying cylinder 9. At the same time, the second spiral conveyor shaft 24 transports the raw material falling into the conveying cylinder 9 to the discharge pipe 10 and discharges it into the reactor for processing through the discharge pipe 10. The cooperation of the first spiral conveyor shaft 23 and the second spiral conveyor shaft 24 in feeding can avoid material blockage and improve the use effect.
[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A feeding device for urea production, comprising a hopper (6), characterized in that: The bottom of the hopper (6) is connected to the base (1) via support legs (5). A feeding mechanism is provided at one end of the bottom of the hopper (6). The feeding mechanism includes a conveying cylinder (9). One side of the conveying cylinder (9) is rotatably connected to the side of the two support legs (5) via a connecting shaft (22). The side of the conveying cylinder (9) is connected to the bottom of the hopper (6) via a discharge pipe (17). A discharge pipe (10) is installed at the bottom of the other end of the conveying cylinder (9). The conveying cylinder (9) is coaxially rotatably connected to a second spiral conveying shaft (24). One end of the second spiral conveying shaft (24) passes through the bottom of the conveying cylinder (9) and is connected to the rotating shaft (3) through a universal joint (4). A mounting plate (2) is connected between the two legs (5) located at the same end. One end of the rotating shaft (3) is rotatably connected to the side of the mounting plate (2). The bottom of the hopper (6) is rotatably connected to a first spiral conveying shaft (23), and one end of the rotating shaft (3) and one end of the first spiral conveying shaft (23) are connected by a drive mechanism. The base (1) is also provided with an adjustment mechanism at its top. The adjustment mechanism includes a bracket (15) fixed to the top of the base (1), and a telescopic mechanism (16) is installed at the top of the bracket (15). A U-shaped frame (13) is installed at the top of the telescopic mechanism (16). The conveying cylinder (9) passes through the U-shaped frame (13), and the conveying cylinder (9) is connected to the U-shaped frame (13) through a limiting mechanism.
2. The feeding device for urea production according to claim 1, characterized in that, The feed tube (17) is made of a retractable corrugated pipe.
3. The feeding device for urea production according to claim 1, characterized in that, The limiting mechanism includes a pair of strip limiting plates (8) installed on both sides of the conveying cylinder (9), and the U-shaped frame (13) has rotatably connected limiting rollers (7) on both sides inside, with one end of each limiting roller (7) extending between each pair of strip limiting plates (8).
4. A feeding device for urea production according to claim 1, characterized in that, The edge of the first spiral conveyor shaft (23) is clearance-fitted with the inner side of the hopper (6), and the edge of the second spiral conveyor shaft (24) is clearance-fitted with the inner wall of the conveyor cylinder (9).
5. A feeding device for urea production according to claim 1, characterized in that, One end of the discharge pipe (10) is fitted with a connecting pipe (12). Two connecting rings (26) are installed on the side of one end of the connecting pipe (12). Each connecting ring (26) and one end of the connecting pipe (12) are provided with an opening groove (25). The side of the connecting pipe (12) is also symmetrically provided with two arc-shaped pipe clamps (11). The arc-shaped pipe clamps (11) are located between the two connecting rings (26). Each arc-shaped pipe clamp (11) has connecting blocks (20) extending from both ends. The two connecting blocks (20) on the same side are fastened together by bolts (27). When the bolts (27) are tightened, the opening groove (25) is closed, and the inner wall of the connecting pipe (12) is tightly pressed against the outer side of the discharge pipe (10).
6. A feeding device for urea production according to claim 5, characterized in that, Each of the arc-shaped pipe clamps (11) has its side surface abutting against the adjacent surfaces of the two connecting rings (26).
7. A feeding device for urea production according to claim 1, characterized in that, There is a gap between the bottom end of the second spiral conveyor shaft (24) and the universal joint (4) and the top of the base (1).
8. A feeding device for urea production according to claim 1, characterized in that, At least one guide rod (14) is also vertically installed at the bottom of the U-shaped frame (13), and the bottom of the guide rod (14) slides through the top of the bracket (15).
9. A feeding device for urea production according to claim 3, characterized in that, The side of each limiting roller (7) is rotatably connected to one side of one of the two adjacent strip limiting plates (8).
10. A feeding device for urea production according to claim 1, characterized in that, The drive mechanism includes a rotating shaft (3) and a first pulley (18) mounted on one end of the first spiral conveying shaft (23). A second pulley (19) is rotatably connected to one side of the mounting plate (2). One end of the second pulley (19) is connected to the drive motor (21) through a gearbox. The drive motor (21) is fixed on the side of the mounting plate (2), and the second pulley (19) is connected to the two first pulleys (18) through a belt.