Multi-stage crushing device for urea resin

Abstract

The utility model discloses a multistage crushing device for urea resin, and relates to the technical field of multistage crushing, the multistage crushing device for urea resin comprises a first crushing mechanism and a second crushing mechanism, the lower end of the first crushing mechanism is fixedly connected with the second crushing mechanism, and the lower end of the second crushing mechanism is fixedly connected with the first crushing mechanism. The multi-stage crushing device for the urea resin is further provided with a grading transition mechanism, the grading transition mechanism comprises a containing frame, a bearing plate and an L-shaped moving plate, a servo motor is started, the left end of the L-shaped moving plate can enter the containing frame, at the moment, an opening is formed in the lower end of the first crushing mechanism, and the bearing plate is arranged in the containing frame. A scraping plate at the lower end of a movable long plate can push urea resin residues into an opening when moving, so that the problem that raw materials treated in the first crushing area are directly fed into the second crushing area, so that the second crushing area cannot bear the materials in the first crushing area at one time is avoided, and the service life of the multi-stage crushing device is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of multi-stage crushing technology, and in particular to a multi-stage crushing device for urea resin. Background Technology

[0002] The multi-stage crushing device for urea resin is primarily designed for efficient and precise crushing of urea resin. Through the coordinated operation of multiple crushing stages, it gradually breaks down larger urea resin particles into the required finer particles. It can precisely control the particle size distribution of the product, meeting the stringent particle size requirements of different production processes. The device features automatic feeding, ensuring a continuous and stable supply of urea resin to the crushing system and guaranteeing production continuity. Simultaneously, the highly efficient crushing technology significantly improves crushing efficiency and reduces energy consumption. The discharge system promptly removes the crushed product, preventing material accumulation. Furthermore, the device is equipped with a dust collection system to effectively collect dust generated during the crushing process, reducing dust pollution, improving the working environment, and achieving environmentally friendly production.

[0003] Currently, existing multi-stage crushing devices for urea resin (such as patent number: CN222642197U) disclose a multi-stage crushing device for urea resin, including: a crushing box, wherein a crushing mechanism is provided inside the crushing box; wherein, the crushing mechanism includes two circular rollers rotatably connected to the upper end of the inner wall of the crushing box, one end of each of the two circular rollers passing through the crushing box and fixedly connected to a first bevel gear; when crushing urea resin, the rotation of the two circular rollers drives the first crushing blade to crush the raw material in an alternating manner, while the circular plate drives multiple trigger blocks to rotate in a circle. When the trigger blocks rotate and coincide with the fixed plate, under the action of the fixed plate, the trigger blocks are pushed to squeeze the gas in the corresponding gas storage cylinder into the connecting pipe, which is beneficial to drive the second crushing blade corresponding to the longitudinal direction to move from the inside of the first crushing blade to crush the raw material, which is beneficial to crush the raw material from different directions, and can cut the raw material into multiple pieces at the same time, ensuring the cutting effect of the raw material.

[0004] However, during the implementation of the above technical solution, at least the following technical problems were discovered:

[0005] The crushing requirements and process conditions for urea resin vary at different stages. The first crushing zone mainly crushes large pieces of material, while the second crushing zone requires a higher degree of particle fineness. If the raw material processed in the first crushing zone is directly fed into the second crushing zone, the second crushing zone may not be able to handle the material from the first crushing zone at once, causing the second crushing zone to be overloaded and reducing the service life of the multi-stage crushing device. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a multi-stage crushing device for urea resin, which solves the problem that the crushing requirements and process conditions of urea resin vary at different stages. The first crushing zone mainly crushes large pieces of material, while the second crushing zone requires a higher degree of particle fineness. If the raw material processed in the first crushing zone is directly fed into the second crushing zone, the second crushing zone may not be able to handle the material from the first crushing zone at once, causing the second crushing zone to be overloaded and reducing the service life of the multi-stage crushing device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-stage crushing device for urea resin includes a first crushing mechanism and a second crushing mechanism. The lower end of the first crushing mechanism is fixedly connected to the second crushing mechanism, and the lower end of the second crushing mechanism is fixedly connected to a base. The multi-stage crushing device for urea resin also includes a grading transition mechanism, including a placement frame, a support plate, and an L-shaped moving plate. The support plate is fixedly connected to the inner wall of the first crushing mechanism, and the placement frame is fixedly connected to the side end of the first crushing mechanism. The L-shaped moving plate is located inside the placement frame, and the right end of the L-shaped moving plate passes through the first crushing mechanism and is movably connected to the left end of the support plate. The first crushing mechanism also includes a pushing mechanism, including a moving long plate, a lead screw, a scraper, and two L-shaped moving plates.

[0009] Preferably, the lead screw is located at the upper end of the bearing plate, and both ends of the lead screw are rotatably connected to the inner wall of the first crushing mechanism. A servo motor is fixedly connected to the right side of the first crushing mechanism, and the output port of the servo motor passes through the first crushing mechanism and is fixedly connected to the right surface of the lead screw.

[0010] Preferably, a movable long plate is threaded onto the lead screw, and a scraper is fixedly connected to the lower end of the movable long plate. The lower end of the scraper contacts the upper surface of the bearing plate, and the left surface of the movable long plate is fixedly connected to two L-shaped push plates. The lower ends of the two L-shaped push plates correspond to the positions of the L-shaped movable plate.

[0011] Preferably, the first crushing mechanism has two parallel T-shaped blocks fixedly connected inside, and two T-shaped grooves adapted to the T-shaped blocks are opened at both ends of the movable plate. The movable plate is slidably connected to the T-shaped blocks through the two T-shaped grooves.

[0012] Preferably, two springs are fixedly connected to the left surface of the L-shaped movable plate, and the ends of the two springs away from the L-shaped movable plate are fixedly connected to the inner wall of the placement frame.

[0013] Preferably, a first motor is fixedly connected to the side end of the first crushing mechanism, and a second motor is fixedly connected to the side end of the second crushing mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Start the servo motor. The left end of the L-shaped moving plate will enter the placement frame. At this time, the lower end of the first crushing mechanism forms an opening. When the scraper at the lower end of the moving plate moves, it will push the urea resin residue into the opening. This avoids the problem that the raw materials processed in the first crushing zone are directly put into the second crushing zone, which may cause the second crushing zone to be unable to handle the material in the first crushing zone at one time. This ensures that the service life of the multi-stage crushing device is not affected.

[0016] 2. When the left end of the L-shaped moving plate enters the interior of the placement frame, the two springs are compressed and begin to rebound, pushing the L-shaped moving plate to reset. At this time, the L-shaped moving plate and the bearing plate form an isolation mechanism to separate the first crushing mechanism from the second crushing mechanism, effectively preventing the urea resin residue that has not been fully crushed in the first crushing mechanism from entering the second crushing mechanism before it meets the standard, thus ensuring the quality stability of the materials processed by the second crushing mechanism.

[0017] 3. The first motor controls the first crushing mechanism, and the second motor controls the second crushing mechanism, so that the first crushing mechanism and the second crushing mechanism can operate independently, which reduces energy consumption and improves production efficiency and flexibility. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is a structural diagram of the entire utility model;

[0020] Figure 2 This is a structural diagram of the internal structure of the first crushing mechanism of this utility model;

[0021] Figure 3 This is a structural diagram of the lead screw of this utility model;

[0022] Figure 4 This is a structural diagram of the L-shaped movable plate of this utility model.

[0023] Legend: 11. First crushing mechanism; 12. Second crushing mechanism; 13. First motor; 14. Second motor; 15. Placement frame; 16. Base; 17. Servo motor; 18. Moving long plate; 19. L-shaped push plate; 20. Bearing plate; 21. T-shaped long block; 22. Lead screw; 23. L-shaped moving plate; 24. T-slot; 25. Spring; 26. Scraper. Detailed Implementation

[0024] This application provides a multi-stage crushing device for urea resin, which effectively solves the problem that the crushing requirements and process conditions of urea resin are different at different stages. The first crushing zone mainly crushes large pieces of material, while the second crushing zone has higher requirements for particle fineness. If the raw material processed in the first crushing zone is directly fed into the second crushing zone, the second crushing zone may not be able to handle the material from the first crushing zone at one time, causing the second crushing zone to be overloaded and reducing the service life of the multi-stage crushing device.

[0025] Example

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem of different crushing requirements and process conditions of urea resin at different stages. The first crushing zone mainly crushes large pieces of material, while the second crushing zone has higher requirements for particle fineness. If the raw material processed in the first crushing zone is directly fed into the second crushing zone, the second crushing zone may not be able to handle the material from the first crushing zone at once, causing the second crushing zone to be overloaded and reducing the service life of the multi-stage crushing device. The overall idea is as follows:

[0027] To address the problems existing in the prior art, this utility model provides a multi-stage crushing device for urea resin, including a first crushing mechanism 11 and a second crushing mechanism 12. The lower end of the first crushing mechanism 11 is fixedly connected to the second crushing mechanism 12, and the lower end of the second crushing mechanism 12 is fixedly connected to a base 16. This multi-stage crushing device for urea resin also includes a grading transition mechanism, including a placement frame 15, a support plate 20, and an L-shaped moving plate 23. The support plate 20 is fixedly connected to the inner wall of the first crushing mechanism 11, and the support plate 20 is located at the first... The bottom of the crushing mechanism 11 and one end of the bearing plate 20 form an opening with the first crushing mechanism 11. The side end of the first crushing mechanism 11 is fixedly connected to the placement frame 15. The L-shaped moving plate 23 is located inside the placement frame 15. The right end of the L-shaped moving plate 23 passes through the first crushing mechanism 11 and is movably connected to the left end of the bearing plate 20. The first crushing mechanism 11 is also provided with a pushing mechanism, including a moving long plate 18, a lead screw 22, a scraper 26 and two L-shaped moving plates 23. The right end of the L-shaped moving plate 23 will cover the opening formed by the bearing plate 20.

[0028] After the first crushing mechanism 11 performs preliminary treatment on the urea resin, the urea resin residue falls onto the support plate 20. The lead screw 22 is located at the upper end of the support plate 20, and both ends of the lead screw 22 are rotatably connected to the inner wall of the first crushing mechanism 11. A servo motor 17 is fixedly connected to the right side of the first crushing mechanism 11. The output port of the servo motor 17 passes through the first crushing mechanism 11 and is fixedly connected to the right surface of the lead screw 22 through a coupling. At this time, the servo motor 17 is started, and the servo motor 17 drives the lead screw 22 to rotate. When the lead screw 22 rotates, it will drive the moving plate 18 to move to the left. The moving plate 18 is threaded onto the lead screw 22. The lower end of the moving plate 18 is fixedly connected to the scraper 26. The lower end of the scraper 26 contacts the upper surface of the support plate 20. The left surface of the moving plate 18 is fixedly connected to two L-shaped push plates 19. The lower ends of the two L-shaped push plates 19 are fixedly connected to the scraper 26. Corresponding to the position of the L-shaped moving plate 23, the moving long plate 18 will move with two L-shaped push plates 19. When the L-shaped push plates 19 move to the left end of the first crushing mechanism 11, they will abut against the L-shaped moving plate 23. When the L-shaped push plates 19 continue to push the L-shaped moving plate 23, the left end of the L-shaped moving plate 23 will enter the placement frame 15. At this time, the lower end of the first crushing mechanism 11 forms an opening. When the scraper 26 at the lower end of the moving long plate 18 moves, it will push the urea resin residue into the opening. By controlling the moving speed and moving distance of the moving long plate 18 and the scraper 26, the processing amount of urea resin residue from the first crushing mechanism 11 to the second crushing mechanism 12 can be controlled. This avoids the problem that the raw materials processed in the first crushing zone are directly put into the second crushing zone, which may cause the second crushing zone to be unable to handle the material in the first crushing zone at one time. This ensures that the service life of the multi-stage crushing device is not affected.

[0029] The first crushing mechanism 11 has two parallel T-shaped blocks 21 fixedly connected inside. Two T-shaped grooves 24, adapted to the T-shaped blocks 21, are opened at both ends of the movable plate 18. The movable plate 18 is slidably connected to the T-shaped blocks 21 through the two T-shaped grooves 24. When the left end of the L-shaped movable plate 23 enters the interior of the placement frame 15, two springs 25 are compressed. Two springs 25 are fixedly connected to the left surface of the L-shaped movable plate 23. The ends of the two springs 25 facing away from the L-shaped movable plate 23 are fixedly connected to the inner wall of the placement frame 15. When the scraper 26... After all the urea resin residue on the support plate 20 is pushed out, the servo motor 17 is controlled to output in reverse. At this time, the two L-shaped push plates 19 no longer press against the L-shaped moving plate 23, and the two springs 25 begin to rebound and push the L-shaped moving plate 23 to reset. At this time, the L-shaped moving plate 23 and the support plate 20 form an isolation mechanism to separate the first crushing mechanism 11 from the second crushing mechanism 12, effectively preventing the urea resin residue in the first crushing mechanism 11 that has not been fully crushed from entering the second crushing mechanism 12 before it meets the standard, thus ensuring the quality stability of the material processed by the second crushing mechanism 12.

[0030] A first motor 13 is fixedly connected to the side end of the first crushing mechanism 11, and a second motor 14 is fixedly connected to the side end of the second crushing mechanism 12. The first motor 13 controls the first crushing mechanism 11, and the second motor 14 controls the second crushing mechanism 12, so that the first crushing mechanism 11 and the second crushing mechanism 12 can operate independently. During the urea resin crushing process, the working status of the two crushing chambers can be flexibly adjusted according to the actual production needs. For example, the operator can adjust the operating parameters of the second crushing mechanism 12 separately to enhance fine crushing and improve production efficiency and flexibility.

[0031] Working principle:

[0032] After the first crushing mechanism 11 performs preliminary treatment on the urea resin, the urea resin residue falls onto the support plate 20. At this time, the servo motor 17 is activated, driving the lead screw 22 to rotate. The rotation of the lead screw 22 causes the moving plate 18 to move to the left. The moving plate 18 then moves two L-shaped push plates 19. When the L-shaped push plates 19 reach the left end of the first crushing mechanism 11, they abut against the L-shaped moving plate 23. As the L-shaped push plates 19 continue to push the L-shaped moving plate 23, the left end of the L-shaped moving plate 23 enters the placement frame 15. When the lower end of the first crushing mechanism 11 forms an opening, the scraper 26 at the lower end of the moving long plate 18 pushes the urea resin residue into the opening as it moves. By controlling the moving speed and moving distance of the moving long plate 18 and the scraper 26, the amount of urea resin residue processed from the first crushing mechanism 11 into the second crushing mechanism 12 can be controlled. This avoids the problem that the raw material processed in the first crushing zone is directly fed into the second crushing zone, which may cause the second crushing zone to be unable to handle the material from the first crushing zone at once. This ensures that the service life of the multi-stage crushing device is not affected.

[0033] When the left end of the L-shaped moving plate 23 enters the interior of the placement frame 15, the two springs 25 are compressed. After the scraper 26 pushes out all the urea resin residue on the support plate 20, the servo motor 17 is controlled to output in the opposite direction. At this time, the two L-shaped push plates 19 no longer press against the L-shaped moving plate 23, and the two springs 25 begin to rebound and push the L-shaped moving plate 23 to reset. At this time, the L-shaped moving plate 23 and the support plate 20 form an isolation mechanism to separate the first crushing mechanism 11 from the second crushing mechanism 12, effectively preventing the urea resin residue in the first crushing mechanism 11 that has not been fully crushed from entering the second crushing mechanism 12 before it meets the standard, thus ensuring the quality stability of the material processed by the second crushing mechanism 12.

[0034] The first motor 13 transmits power to the components responsible for crushing within the first crushing mechanism 11, such as the rotor and moving jaw in the crushing chamber, to perform preliminary crushing of the urea resin entering the first crushing mechanism 11. The second motor 14 transmits power to the crushing mechanism within the second crushing mechanism 12 through a separate transmission device independent of the first motor 13's transmission system, allowing the first crushing mechanism 11 and the second crushing mechanism 12 to operate independently. During the urea resin crushing process, the working state of the two crushing chambers can be flexibly adjusted according to actual production needs. For example, the operator can adjust the operating parameters of the second crushing mechanism 12 separately to enhance fine crushing and improve production efficiency and flexibility.

[0035] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multi-stage crushing device for urea resin, comprising a first crushing mechanism (11) and a second crushing mechanism (12), characterized in that, The lower end of the first crushing mechanism (11) is fixedly connected to the second crushing mechanism (12), and the lower end of the second crushing mechanism (12) is fixedly connected to a base (16). This multi-stage crushing device for urea resin is also provided with a grading transition mechanism, including a placement frame (15), a bearing plate (20), and an L-shaped moving plate (23). The inner wall of the first crushing mechanism (11) is fixedly connected to the bearing plate (20), and the side end of the first crushing mechanism (11) is fixedly connected to the placement frame (15). The L-shaped moving plate (23) is located inside the placement frame (15). The right end of the L-shaped moving plate (23) passes through the first crushing mechanism (11) and is movably connected to the left end of the bearing plate (20). The first crushing mechanism (11) is also provided with a pushing mechanism for pushing the L-shaped moving plate (23) into the placement frame (15).

2. The multi-stage crushing device for urea resin as described in claim 1, characterized in that: The pushing mechanism includes a movable long plate (18), a lead screw (22), a scraper (26) and two L-shaped movable plates (23). The lead screw (22) is located at the upper end of the bearing plate (20), and both ends of the lead screw (22) are rotatably connected to the inner wall of the first crushing mechanism (11). A servo motor (17) is fixedly connected to the right side of the first crushing mechanism (11). The output port of the servo motor (17) passes through the first crushing mechanism (11) and is fixedly connected to the end of the lead screw (22) through a coupling.

3. The multi-stage crushing device for urea resin as described in claim 2, characterized in that: The lead screw (22) is threaded with a movable long plate (18), and the lower end of the movable long plate (18) is fixedly connected to a scraper (26). The lower end of the scraper (26) is in contact with the upper surface of the bearing plate (20). The left surface of the movable long plate (18) is fixedly connected to two L-shaped push plates (19), and the lower ends of the two L-shaped push plates (19) correspond to the position of the L-shaped movable plate (23).

4. A multi-stage crushing device for urea resin as described in claim 3, characterized in that: The first crushing mechanism (11) has two parallel T-shaped blocks (21) fixedly connected inside; The movable long plate (18) has two T-shaped slots (24) at both ends that are adapted to the T-shaped long block (21), and the movable long plate (18) is slidably connected to the T-shaped long block (21) through the two T-shaped slots (24).

5. A multi-stage crushing device for urea resin as described in claim 4, characterized in that: Two springs (25) are fixedly connected to the left surface of the L-shaped movable plate (23); Among them, the ends of the two springs (25) that are away from the L-shaped moving plate (23) are fixedly connected to the inner wall of the placement frame (15).

6. A multi-stage crushing device for urea resin as described in claim 5, characterized in that: The first crushing mechanism (11) is fixedly connected to a first motor (13) at its side end, and the second crushing mechanism (12) is fixedly connected to a second motor (14) at its side end.

Images