Raw material lifting device for compound fertilizer processing

Abstract

The application discloses a raw material lifting device for compound fertilizer processing, which comprises a moving support, a lifting frame, a material box, a limiting structure, a lifting chain system and a box overturning guide structure. The lifting frame is installed on the moving support, the lifting chain system is arranged on the lifting frame, the lifting chain system transmits the material box, the upper end of the lifting frame is provided with the limiting structure and the box overturning guide structure, the material box comprises an outer box body and an inner box body, the inner box body is slidingly arranged in the outer box body, a plurality of elastic structures are arranged on the outer box body, and the elastic structure comprises a fixing sleeve, a guide rod and a first spring. The material box is designed as a double-layer structure, the elastic structure is arranged in the middle, the gravitational potential energy in the overturning process is converted into the elastic force of the spring, the reciprocating vibration of the inner box body is driven, the problem of moisture absorption and adhesion of the compound fertilizer raw material is effectively solved, the residue is greatly reduced, and the raw material utilization rate is improved.

Description

Technical Field

[0001] This invention relates to the field of compound fertilizer processing machinery and equipment technology, specifically to a raw material lifting device for compound fertilizer processing. Background Technology

[0002] In the processing and production of compound fertilizers, raw materials (such as single-element fertilizers like nitrogen, phosphorus, and potassium) typically need to be transported from a lower to a higher level to enter subsequent mixing or granulation processes. Existing lifting devices mostly use bucket elevators, but these have the following drawbacks in practical applications: Compound fertilizer raw materials are highly hygroscopic and easily adhere to the environment, causing a large amount of raw materials to accumulate and remain on the inner wall of the hopper. This not only wastes raw materials but also easily causes the center of gravity of the hopper to shift, affecting the stability of equipment operation, resulting in incomplete unloading, requiring manual cleaning, and reducing production efficiency.

[0003] Therefore, we propose a raw material lifting device for compound fertilizer processing to solve the problems mentioned above. Summary of the Invention

[0004] The purpose of this invention is to provide a raw material lifting device for compound fertilizer processing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a raw material lifting device for compound fertilizer processing, comprising: a movable support, a lifting frame, a material box, a limiting structure, a lifting chain system, and a box flipping guide structure; A lifting frame is installed on the mobile support, and a lifting chain system is set on the lifting frame to convey the material box. The upper end of the lifting frame is provided with a limit structure and a box flipping guide structure; The hopper includes an outer box and an inner box. The inner box is slidably disposed inside the outer box. The outer box is provided with several elastic structures, including a fixing sleeve, a guide rod and a first spring.

[0006] Preferably, the lifting frame includes an outer frame, an outer guide rail, and an inner guide rail; The inner ring guide rail is provided with a support rod structure, which is fixedly connected to the outer frame through a suspended connecting arm. The outer ring guide rail is fixedly installed on the inner wall of the outer frame, and the outer ring guide rail is located below the inner ring guide rail. The two ends of the outer ring guide rail wrap around the corners of the inner ring guide rail.

[0007] Preferably, the outer casing of the material box is symmetrically connected to traveling rollers on both sides; The inner shaft of the walking roller is rotatably connected to a hinged connector, which is rotatably connected to a U-shaped hanger. The U-shaped hanger is fixedly connected to the side of the lifting chain in the lifting chain system.

[0008] Preferably, in the elastic structure, the fixing sleeve is fixedly installed on the outer casing, the guide rod slides through the fixing sleeve, and the upper end of the guide rod is fixedly connected to the inner casing; Two first springs are sleeved on the guide rod, located at the upper and lower positions of the fixed sleeve, respectively; The guide rod is also equipped with a pair of limiting rings for limiting the first spring.

[0009] Preferably, the lifting chain system includes a lifting chain, a transmission link, a transmission sprocket, a primary transmission chain, a main motor, and a guide sprocket; The main motor drives the transmission link through a speed-changing structure. The two ends of the transmission link are connected to two lifting chains through a primary transmission chain and a transmission sprocket, respectively.

[0010] Preferably, the box-top tilting guide structure includes a pair of blocking rollers connected by a connecting rod. An automated track device is provided between the connecting rod and the lifting frame. The automated track device drives the connecting rod to move the blocking rollers along a certain trajectory.

[0011] Preferably, the automated track device includes a linear guide rail, and a lead screw is installed inside the linear guide rail, the lead screw being connected to the output end of a servo motor; The lower end of the linear guide rail is connected to the inner ring guide rail through a first rotating structure, and the linear guide rail is connected to the telescopic end of the cylinder structure.

[0012] Preferably, the limiting structure includes two limiting rollers, which are rotatably sleeved on the swing shaft; The two ends of the swing shaft are connected to the swing arm, and the other end of the swing arm is rotatably connected to the outer frame. A second spring or telescopic cylinder is connected between the middle of the swing arm and the outer frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. By designing the material box as a double-layer structure with an elastic structure in the middle, the gravitational potential energy during the flipping process is converted into the elastic force of the spring, which drives the inner box to generate reciprocating vibration, effectively solving the problem of moisture absorption and adhesion of compound fertilizer raw materials, greatly reducing residues and improving the utilization rate of raw materials. 2. By setting up a precise combination of box body flipping guide structure and limiting structure, it is ensured that the box can accurately and stably flip to the opening facing down when lifted to a high position, and maintain a certain distance of material pouring stroke to ensure complete unloading; 3. The lifting frame adopts an angled design where the outer guide rail wraps around the inner guide rail, and together with the traveling rollers, it ensures that the material box is supported throughout the entire cycle of operation and can smoothly transition to corners without jamming; at the same time, it adopts a suspended connecting arm to connect the support rod structure, avoiding the space of the hinged connector and ensuring smooth movement. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the lifting frame in this invention; Figure 3 In this invention Figure 3 Enlarged view of point A; Figure 4 This is a side view of the outer frame, inner guide rail, and traveling rollers in this invention; Figure 5 This is a schematic diagram of the lifting chain system in this invention; Figure 6 This is a schematic diagram of the material box structure in this invention; Figure 7 This is a schematic diagram of the limiting structure in this invention; Figure 8 This is a schematic diagram showing the cooperation between the material box and the box body flipping guide structure in this invention; Figure 9 This is a schematic diagram of the box-type flipping guide structure in this invention; Figure 10 This is a schematic diagram showing the changing side of the material bin in this invention, where the limiting roller and the blocking roller rotate.

[0015] In the diagram: 1. Movable support; 2. Lifting frame; 21. Outer frame; 22. Outer guide rail; 23. Inner guide rail; 231. Support rod structure; 232. Suspended connecting arm; 3. Material box; 31. Traveling roller; 32. Hinge connector; 33. U-shaped hanger; 34. Outer housing; 35. Inner housing; 36. Elastic structure; 361. Fixing sleeve; 362. Guide rod; 363. First spring; 364. Limiting ring; 4. Limiting structure; 41. Swing arm; 42. Second spring 43. Spring; 44. Swing shaft; 45. Limiting roller; 56. Limiting cam shaft; 57. Lifting chain system; 58. Lifting chain; 59. Transmission connecting rod; 50. Transmission sprocket; 51. Primary transmission chain; 52. Main motor; 53. Guide sprocket; 64. Box flipping guide structure; 65. Linear guide rail; 66. First rotating structure; 67. Lead screw; 68. Transmission gearbox; 69. Servo motor; 60. Blocking roller; 61. Cylinder structure; 62. Second rotating structure; 63. Connecting rod. Detailed Implementation

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

[0017] Please see Figure 1-10 This invention provides a technical solution: a raw material lifting device for compound fertilizer processing, comprising: a movable support 1, a lifting frame 2, a material box 3, a limiting structure 4, a lifting chain system 5, and a box flipping guide structure 6. The lifting frame 2 is installed on the movable support 1, and the lifting chain system 5 is provided on the lifting frame 2. The lifting chain system 5 conveys the material box 3, moving it from a low position to a high position to complete the lifting. The upper end of the lifting frame 2 is provided with the limiting structure 4 and the box flipping guide structure 6. When the material box 3 travels to the box flipping guide structure 6, the box flipping guide structure 6 blocks the flow, and the lifting chain system 5 cooperates to cause the material box 3 to flip with its opening facing downwards. The limiting structure 4 limits the flow to prevent over-flipping. After flipping, the compound fertilizer in the material box 3 is poured out. After pouring, the material box 3 continues to travel, first disengaging from the limiting structure 4, and then flipping again to return to its original position with the opening facing upwards. The lifting chain system 5 then transports the material to a lower position for loading. Multiple material boxes 3 are loaded and unloaded in a cyclical manner to ensure the lifting efficiency of the compound fertilizer.

[0018] Due to the hygroscopic and easily adhesive properties of compound fertilizer raw materials, residues tend to accumulate inside the material box 3. This technical solution designs the material box 3 as a double-layer structure with an inner and outer layer, and sets an elastic structure 36 between the inner and outer layers. During the unloading process of the inner layer, the elastic structure 36 is used to make the compound fertilizer raw materials detach from the inner layer due to inertia.

[0019] Specifically, such as Figure 6 As shown, the material box 3 includes an outer box 34 and an inner box 35. The inner box 35 is slidably disposed inside the outer box 34. The outer wall (or inner wall) of the outer box 34 is provided with a number of elastic structures 36. The elastic structure 36 includes a fixed sleeve 361, a guide rod 362, and a first spring 363. The fixed sleeve 361 is fixedly installed on the outer housing 34. The guide rod 362 slides through the fixed sleeve 361. The upper end of the guide rod 362 is fixedly connected to the inner housing 35. Two first springs 363 are sleeved on the guide rod 362. The two first springs 363 are located above and below the fixed sleeve 361, respectively. A pair of limiting rings 364 are also provided on the guide rod 362. The fixed sleeve 361 limits one end of the two first springs 363, and the pair of limiting rings 364 limit the other end of the two first springs 363, respectively. When raw materials are placed into the inner box 35, the inner box 35 sinks, causing the guide rod 362 to descend. At this time, the upper first spring 363 is compressed. After the inner box 35 flips over to unload the material, the upper first spring 363 is released, and the inner box 35 moves away from the outer box 34. The lower first spring 363 is compressed. After being compressed to its limit, the lower first spring 363 is released, pushing the inner box 35 into the outer box 34. At this time, the upper first spring 363 is compressed again. Through the repeated compression and release of the two first springs 363, the inner box 35 slides repeatedly in and out relative to the outer box 34, realizing the function of material vibration and greatly reducing the adhesion of compound fertilizer raw materials in the inner box 35, until the two first springs 363 reach equilibrium and the inner box 35 comes to a stop.

[0020] like Figure 2 and Figure 3 As shown, the outer box 34 of the material box 3 is symmetrically connected to the traveling rollers 31 on both sides, and the traveling rollers 31 are located at a high position on the side of the outer box 34, so that the main body of the outer box 34 automatically droops under the influence of gravity, ensuring that the opening faces upward. The traveling rollers 31 travel along the fixed track of the lifting frame 2. The traveling rollers 31 are also connected to the lifting chain system 5. The lifting chain system 5 pulls the traveling rollers 31 to travel along the track of the lifting frame 2, thereby driving the material box 3 to move. Specifically, the inner shaft of the walking roller 31 is rotatably connected to the hinge connector 32, the hinge connector 32 is rotatably connected to the U-shaped hanger 33, and the U-shaped hanger 33 is fixedly connected to the side of the lifting chain 51 in the lifting chain system 5. The lifting chain 51 moves, and the traveling roller 31 is pulled to move by the U-shaped hanger 33 and the hinged connector 32.

[0021] like Figure 2 and Figure 4 As shown, the lifting frame 2 has a rhomboid structure, which includes an outer frame 21, an outer guide rail 22, and an inner guide rail 23. The outer frame 21 is the main support structure. The inner guide rail 23 is provided with a support rod structure 231. The support rod structure 231 is fixedly connected to the outer frame 21 through a suspended connecting arm 232, so that there is a gap between the edge of the inner guide rail 23 and the outer frame 21. The outer guide rail 22 is fixedly installed on the inner wall of the outer frame 21. The outer guide rail 22 is located below the inner guide rail 23, and the two ends of the outer guide rail 22 wrap around the corners of the inner guide rail 23. The traveling roller 31 rolls against the upper surface of the inner ring guide rail 23. When the traveling roller 31 moves along the inner ring guide rail 23, it rolls against the inner wall of the outer ring guide rail 22. The corner design of the outer guide rail 22 and the inner guide rail 23 enables the traveling roller 31 to switch smoothly between the outer guide rail 22 and the inner guide rail 23, providing support for the material box 3 throughout its entire surrounding process. The suspended design of the inner guide rail 23 enables the walking roller 31 and the hinged connector 32 to complete the circular movement without obstruction.

[0022] like Figure 5 As shown, the lifting chain system 5 includes a lifting chain 51, a transmission link 52, a transmission sprocket 53, a primary transmission chain 54, a main motor 55, and a guide sprocket 56. The main motor 55 is fixedly installed on the outer wall of the outer frame 21. The main motor 55 drives the transmission link 52 through a speed-changing structure. The transmission link 52 is rotatably arranged between the outer frames 21. The two ends of the transmission link 52 are respectively connected to two lifting chains 51 through the primary transmission chain 54 and the transmission sprocket 53. Guide sprockets 56 are provided at the four corners of the lifting chain 51. The guide sprockets 56 are rotatably connected to the outer frame 21. The lifting chain 51 is located in the gap between the outer frame 21 and the inner ring guide rail 23. The lifting chain 51 and the inner ring guide rail 23 are designed to be on the same track, so that the traveling roller 31 can contact the inner ring guide rail 23 while being connected to the lifting chain 51 and being pulled by it. The transmission link 52 is located in the gap between the upper and lower running tracks of the material box 3 to prevent interference with the movement of the material box 3.

[0023] like Figures 7 to 9 As shown, the box body flipping guide structure 6 includes a pair of blocking rollers 65. The blocking rollers 65 run along a certain trajectory through an automated track device to block the lower part of the box 3, so that the box 3 flips around the axis of the traveling roller 31 as it continues to move. When it flips to a certain angle to ensure that the opening of the box 3 is basically facing downward, it is limited by the limiting structure 4. The cooperation between the limiting structure 4 and the box body flipping guide structure 6 causes the opening of the box 3 to move downward a distance until the unloading is completed. Specifically, there are two blocking rollers 65 connected in series by a connecting rod 67. The two ends of the connecting rod 67 are connected to an automated track device. In this embodiment, the automated track device includes a linear guide rail 61. The two ends of the connecting rod 67 are slidably connected to the linear guide rail 61 through fixed pulleys. A lead screw 62 is rotatably installed inside the linear guide rail 61. The fixed pulleys are threaded onto the lead screw 62. A servo motor 64 and a transmission gearbox 63 are installed at the lower end of the linear guide rail 61. The output end of the servo motor 64 is connected to the transmission gearbox 63. The output end of the transmission gearbox 63 is connected to the lead screw 62. The servo motor 64 outputs power, which drives the lead screw 62 to rotate through the transmission gearbox 63, thereby enabling the connecting rod 67 to move along the linear guide rail 61 and adjusting the relative position of the blocking rollers 65 and the material box 3. To further increase the range of motion of the blocking roller 65, a first rotating structure 611 is provided on the lower side of the linear guide rail 61. The first rotating structure 611 is rotatably connected to the inner wall of the inner ring guide rail 23. A cylinder structure 66 is connected to the lower surface of the linear guide rail 61. The telescopic end of the cylinder structure 66 is rotatably connected to the linear guide rail 61. A second rotating structure 661 is provided in the cylinder body of the cylinder structure 66, and the second rotating structure 661 is rotatably connected to the inner wall of the inner ring guide rail 23. The linear guide rail 61 is driven to rotate around the first rotating structure 611 by the telescopic movement of the cylinder structure 66, thereby adjusting the range of motion of the blocking roller 65. A sensor is provided on the blocking roller 65 for the central control system to determine the separation and contact between the blocking roller 65 and the material box 3. The running time of the servo motor 64 and the cylinder structure 66 is designed according to the actual required trajectory of the material box 3 to ensure that the blocking roller 65 travels along the predetermined trajectory from contact with the material box 3 to separation.

[0024] The limiting structure 4 includes two limiting rollers 44, which are set in the centrifugal direction at the material feeding point of the inner ring guide rail 23. The limiting rollers 44 contact the outer wall of the material box 3. The two limiting rollers 44 are rotatably sleeved on a swing shaft 43. The two ends of the swing shaft 43 are fixedly connected to the swing arm 41, and the other end of the swing arm 41 is rotatably connected to the outer frame 21. A telescopic structure is connected between the middle position of the swing arm 41 and the outer frame 21. In this embodiment, the telescopic structure is a second spring 42. In other embodiments, it can also be a telescopic cylinder. The side of the outer frame 21 is also provided with a limiting convex shaft 45 for the maximum swing angle of the swing arm 41. When the material box 3 is flipped, the side wall of the material box 3 contacts the limiting roller 44, which limits the flipping angle of the material box 3, so that the opening of the material box 3 remains downward, and the unloading is completed.

[0025] Working principle: such as Figures 1 to 10 As shown, the main motor 55 in the lifting chain system 5 starts, driving the lifting chain 51 to rotate cyclically through the primary transmission chain 54 and the transmission sprocket 53. The lifting chain 51 pulls the traveling roller 31 of the material box 3 through the U-shaped hanger 33 and the hinged connector 32, causing the material box 3 to move from a low position to a high position along the track formed by the inner ring guide rail 23 and the outer ring guide rail 22 of the lifting frame 2.

[0026] When the material bin 3 reaches the unloading position at the top of the lifting frame 2, the servo motor 64 in the bin tilting guide structure 6 starts, driving the lead screw 62 to rotate through the transmission gearbox 63, causing the blocking roller 65 on the linear guide rail 61 to move to the predetermined position. As the lifting chain 51 continues to pull, the lower part of the material bin 3 is blocked by the blocking roller 65, forcing the material bin 3 to tilt around the axis of the traveling roller 31.

[0027] During the flipping process, the side wall of the material box 3 contacts the limiting roller 44 of the limiting structure 4, and the swing arm 41 swings under the action of the second spring 42 to limit the flipping angle of the material box 3, ensuring that the opening of the material box 3 faces downward and remains stable, thereby dumping out the compound fertilizer raw materials inside.

[0028] At the moment of unloading and flipping, due to the gravity of the inner box 35, it will move downward relative to the outer box 34, compressing the upper first spring 363; when flipping and resetting, the first spring 363 releases its elastic force, pushing the inner box 35 to reciprocate and slide against the outer box 34, using inertia to shake off the compound fertilizer raw materials adhering to the wall of the inner box 35, thus achieving automatic cleaning.

[0029] After unloading, the material box 3 continues to descend with the lifting chain 51, breaking free from the constraints of the blocking roller 65 and the limiting roller 44. Under the action of gravity, it automatically resets to the open-facing state, returns to the low position for the next loading, and completes the cycle operation.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material lifting device for compound fertilizer processing, characterized in that, include: The moving support (1), lifting frame (2), hopper (3), limiting structure (4), lifting chain system (5) and hopper tilting guide structure (6); The lifting frame (2) is installed on the mobile support (1), and the lifting chain system (5) is set on the lifting frame (2). The lifting chain system (5) conveys the material box (3). The upper end of the lifting frame (2) is provided with a limiting structure (4) and a box flipping guide structure (6). The hopper (3) includes an outer box (34) and an inner box (35). The inner box (35) is slidably disposed inside the outer box (34). The outer box (34) is provided with several elastic structures (36). The elastic structures (36) include a fixing sleeve (361), a guide rod (362) and a first spring (363).

2. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The lifting frame (2) includes an outer frame (21), an outer guide rail (22), and an inner guide rail (23). The inner ring guide rail (23) is provided with a support rod structure (231), and the support rod structure (231) is fixedly connected to the outer frame (21) through a suspended connecting arm (232). The outer ring guide rail (22) is fixedly installed on the inner wall of the outer frame (21), and the outer ring guide rail (22) is located below the inner ring guide rail (23). The two ends of the outer ring guide rail (22) wrap around the corners of the inner ring guide rail (23).

3. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The outer casing (34) of the material box (3) is symmetrically connected to the traveling rollers (31) on both sides. The inner shaft of the walking roller (31) is rotatably connected to the hinge connector (32), the hinge connector (32) is rotatably connected to the U-shaped hanger (33), and the U-shaped hanger (33) is fixedly connected to the side of the lifting chain (51) in the lifting chain system (5).

4. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, In the elastic structure (36), the fixed sleeve (361) is fixedly installed on the outer box (34), and the guide rod (362) slides through the fixed sleeve (361). The upper end of the guide rod (362) is fixedly connected to the inner box (35). Two first springs (363) are sleeved on the guide rod (362), located on the upper and lower parts of the fixed sleeve (361) respectively; The guide rod (362) is also provided with a pair of limiting rings (364) for limiting the first spring (363).

5. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The lifting chain system (5) includes a lifting chain (51), a transmission link (52), a transmission sprocket (53), a primary transmission chain (54), a main motor (55), and a guide sprocket (56). The main motor (55) drives the transmission link (52) through a speed change structure. The two ends of the transmission link (52) are respectively connected to two lifting chains (51) through a primary transmission chain (54) and a transmission sprocket (53).

6. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The box flipping guide structure (6) includes a pair of blocking rollers (65). The blocking rollers (65) are connected by a connecting rod (67). An automated track device is provided between the connecting rod (67) and the lifting frame (2). The automated track device drives the connecting rod (67) to drive the blocking rollers (65) to walk along a certain trajectory.

7. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The automated track device includes a linear guide rail (61), and a lead screw (62) is installed inside the linear guide rail (61). The lead screw (62) is connected to the output end of a servo motor (64). The lower end of the linear guide (61) is connected to the inner ring guide (23) through the first rotating structure (611), and the linear guide (61) is connected to the telescopic end of the cylinder structure (66).

8. The raw material lifting device for compound fertilizer processing according to claim 1, characterized in that, The limiting structure (4) includes two limiting rollers (44), which are rotatably mounted on the swing shaft (43); The swing shaft (43) is connected to the swing arm (41) at both ends, and the other end of the swing arm (41) is rotatably connected to the outer frame (21). A second spring (42) or telescopic cylinder is connected between the swing arm (41) and the outer frame (21).

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