A raw material crushing device for PP plastic granulation

Abstract

The utility model relates to PP plastics granule crushing technical field, and disclose a kind of raw material crushing device for PP plastics granulation, by body, feed inlet, back material port, discharge port, discharge port and base etc. are constituted, and fixed block is welded at the rear wall of body, fixed block movably connects with rotating roller, rotating roller movably sleeve connects, belt movably connects with recovery hopper, the inner wall left and right upper of body is fixedly connected with fixed plate, the inner wall lower of body is equipped with the filter screen of movable connection. The utility model is symmetrical in each side wall surface of body respectively, and back material port and discharge port are set, by the movement of crushing roller, the plastic of crushing not completely can be discharged to discharge port by filter screen, into back hopper, then by the movement of belt, recovery hopper is sent to back material port for secondary crushing, and the filter screen of movable connection is equipped in the inner wall lower of body, by the weight of crushing on the top, let movable roller move, make filter screen extrude downwards, so that discharge port is not blocked.

Description

Technical Field

[0001] This utility model relates to the field of PP plastic granule crushing technology, and in particular to a raw material crushing device for PP plastic granulation. Background Technology

[0002] With the progress of the times and the improvement of people's living standards, there are more and more packaging materials. Among them, PP plastic is a widely used thermoplastic synthetic resin, which is used in many fields such as machinery, automobiles, electronics, and construction. With the increase in its usage, the amount of waste PP plastic is also increasing. In order to achieve resource recycling, reduce production costs, and reduce environmental pollution, it is necessary to recycle and reprocess waste PP plastic. Crushing is a key pretreatment step in the recycling process, which facilitates subsequent melting and reprocessing, granulation and other processes. However, waste PP plastic has different sizes, and usually needs to be coarsely crushed and then crushed. However, the connection between coarse crushing and crushing in the existing technology is poor, which affects the crushing and processing efficiency. Moreover, the crushing is not complete in one step, resulting in low overall crushing efficiency. The crushed plastic particles may clump due to high humidity or foreign matter may be mixed in, causing blockage of the discharge port. In addition, unreasonable discharge pipe design, such as right angle bends or pipe diameter that is too small, can also easily cause material accumulation and blockage. Compared with the incomplete crushing and easy blockage problems of the crushers on the market, this also affects the subsequent use.

[0003] Based on the above, we hereby propose a raw material crushing device for PP plastic granulation in order to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a raw material crushing device for PP plastic granulation, which has the advantages of complete crushing, no clogging, and full automation, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: A raw material crushing device for PP plastic granulation, comprising a machine body, characterized in that: a feed inlet is provided at the center of the top of the machine body, return inlets are provided on both sides of the top of the machine body, discharge inlets are provided on both sides of the bottom of the machine body, an outlet is provided at the bottom of the machine body, a base is fixedly connected to the bottom of the machine body, four sets of fixing blocks are provided on the outer surface of the machine body, each set of fixing blocks consists of two blocks, a rotating roller is movably connected between the ends of the fixing blocks away from the machine body, a belt is movably sleeved on the outer surface of the rotating roller, a recycling hopper is fixedly connected to the outer surface of the belt, fixing plates are fixedly connected to the upper left and right sides of the inner wall of the machine body, a raised filter screen is provided at the lower part of the inner wall of the machine body, a movable roller is movably connected to the center point of the bottom surface of the filter screen, a movable rod is welded to the center of the filter screen, a fixed shaft is movably connected to the middle of the inner wall of the machine body, a rotating column is fixedly connected to the outer wall of the fixed shaft, and a blade is fixedly connected to the outer wall of the rotating column.

[0006] Preferably, the feed inlet is configured as a hollow rectangular tube with a gradually narrowing opening.

[0007] Preferably, each side wall of the machine body is symmetrically provided with a return port and a discharge port.

[0008] Preferably, there are three movable rods, with the top of the middle movable rod higher than the movable rods on both sides, and a spring connected to the bottom of the movable rod.

[0009] Compared with the prior art, the present invention has the following advantages: it has the advantages of recycling and secondary crushing, no clogging, and full automation.

[0010] 1. This utility model has a return port and a discharge port symmetrically opened on each side wall of the machine body. Through the movement of the crushing roller, the incompletely crushed plastic will pass through the filter screen and be discharged to the discharge port, entering the return hopper. Then, the belt will move the recycling hopper to the return port for secondary crushing (since the motor is existing technology, it will not be described in detail here, and it is not shown in the attached drawings). This forms the advantages of secondary crushing and full automation.

[0011] 2. This utility model features a movably connected filter screen located on the lower part of the inner wall of the machine body. Three movable rods are welded to the bottom center of the filter screen, and springs are connected to the bottom of the movable rods. The weight of the crushing material above causes the filter screen to press down on the springs, which in turn moves the movable rods. Through the interaction of forces, the filter screen can perform its function better, thus preventing the discharge port from becoming blocked. Attached Figure Description

[0012] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0013] Figure 2 This is an internal structural diagram of the present invention;

[0014] Figure 3 This is a schematic diagram of the structural position of this utility model.

[0015] In the diagram: 1. Machine body; 2. Feed inlet; 3. Return outlet; 4. Discharge outlet; 5. Outlet; 6. Base; 7. Fixing block; 8. Recycling hopper; 9. Belt; 10. Rotary roller; 11. Fixing plate; 12. Filter screen; 13. Movable roller; 14. Movable rod; 15. Fixed shaft; 16. Rotating column; 17. Blade. Detailed Implementation

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

[0017] Please see Figures 1-3 A raw material crushing device for PP plastic granulation includes a machine body 1. A feed inlet 2 is welded to the center of the top of the machine body 1. The feed inlet 2 is a hollow rectangular tube with a gradually narrowing opening, ensuring that raw materials can enter the interior of the machine body 1. Return inlets 3 are located on both sides of the top of the machine body 1 to ensure that unqualified raw materials after crushing enter through the return inlets 3. Discharge inlets 4 are located on both sides of the bottom of the machine body 1. Each side wall of the machine body 1 has symmetrically located return inlets 3 and discharge inlets 4, ensuring that unqualified raw materials after crushing are discharged through the discharge inlets 4. An outlet 5 is located at the bottom of the machine body 1, from which completely crushed raw materials are discharged. A base 6 is fixedly connected to the bottom of the machine body 1. A fixing block 7 is fixedly connected to the rear wall of the machine body 1. A rotating roller 10 is movably connected to the fixing block 7, and a belt 9 is movably sleeved on the rotating roller 10. The belt 9 is movably connected to the recovery hopper 8. The raw materials discharged from the discharge port 4 will enter the recovery hopper 8 and then be crushed through the return port 3 as the belt 9 moves. Fixed plates 11 are fixedly connected to the upper left and right sides of the inner wall of the machine body 1 to support the internal structure. A raised filter screen 12 is provided on the lower part of the inner wall of the machine body 1. A movable roller 13 is movably connected to the center point of the filter screen 12. A movable rod 14 is welded to the center of the filter screen 12. There are three movable rods 14. The top of the movable rod 14 in the middle is higher than the movable rods 14 on both sides, and the bottom of the movable rod is connected to a spring. A fixed shaft 15 is welded to the middle of the inner wall of the machine body 1. A rotating column 16 is movably sleeved on the outer wall of the fixed shaft 15. The rotating column 16 is driven by a motor to rotate at high speed. Blades 17 are evenly distributed and movably sleeved on its outer wall to perform high-intensity cutting and crushing on the raw materials entering the machine body 1.

[0018] Please see Figures 1-3 The fixed block 7 on the rear wall of the machine body 1 is used to install the rotating roller 10. The rotating roller 10 is movably connected to the fixed block 7 through the bearing and can rotate flexibly. The outer side of the rotating roller 10 is fitted with a belt 9, which cooperates with the recycling hopper 8, the return port 3 and other components to form a raw material recycling and transmission path. When the unqualified raw material discharged from the discharge port 4 falls into the recycling hopper 8, the rotating roller 10 drives the belt 9 to rotate and transport the raw material to the return port 3 to realize the cycle process of secondary crushing. This structure ensures the stability of the power transmission of the recycling system.

[0019] Please see Figures 1-3The filter screen 12 is movably connected to a movable roller 13 and a spring at its center. The raw materials fed in are crushed and fall onto the filter screen 12. When the raw materials accumulate to a certain weight, the movable roller 13 presses down on the spring under the action of gravity, causing the filter screen 12 to tilt. Finely crushed and qualified raw materials slide down the screen surface to the discharge port 5, while larger particles are intercepted on the screen surface. At the same time, the spring continuously generates an upward reaction force, driving the movable roller 13 to move up and down reciprocally. Combined with the vibration device on the side wall of the machine, the filter screen 12 vibrates at high frequency to prevent materials from clogging the mesh. Large particles of raw materials that do not pass the screening gradually slide towards the edge of the filter screen 12 during vibration and are eventually introduced into the secondary crushing chamber for re-grinding together with the newly fed raw materials. This dynamic filtration mechanism not only improves the raw material screening efficiency but also ensures the uniformity of the finished product particle size.

[0020] Working principle:

[0021] First, plastic is fed into the feed inlet 2. Then, the motor starts, causing the fixed shaft 15 to rotate with the rotating column 16 (since the motor is existing technology, it will not be described in detail here, and it is not shown in the attached diagram). This causes the blades 17 to operate and crush the plastic. On each side wall of the machine body 1, there are symmetrically arranged return ports 3 and discharge ports 4. Through the movement of the rotating column 16, the incompletely crushed plastic will pass through the filter screen 12 and be discharged to the discharge port 4, entering the recycling hopper 8. Then, through the movement of the belt 9, the recycling hopper 8 is transferred to the return port 3 for secondary crushing. The filter screen 12 is movably connected to the lower inner wall of the machine body 1. The weight of the crushing above causes the movable roller 13 to move, which squeezes the filter screen 12 downward, causing the movable rod 14 to move, so that the discharge port 5 is not blocked.

Claims

1. A raw material crushing device for PP plastic granulation, comprising a body (1), characterized in that: The machine body (1) has a feed inlet (2) at the top center, a return outlet (3) on both sides of the top of the machine body (1), a discharge outlet (4) on both sides of the bottom of the machine body (1), a discharge outlet (5) at the bottom of the machine body (1), a base (6) fixedly connected to the bottom of the machine body (1), and four sets of fixing blocks (7) on the outer surface of the machine body (1). Each set of fixing blocks (7) consists of two blocks. A rotating roller (10) is movably connected between the ends of the fixing blocks (7) away from the machine body (1). A belt (9) is movably sleeved on the outer surface of the rotating roller (10). The outer surface of the belt (9) is fixedly connected to a recycling hopper (8), and the upper left and right sides of the inner wall of the machine body (1) are fixedly connected to a fixing plate (11). The lower part of the inner wall of the machine body (1) is provided with a protruding filter screen (12). The center point of the bottom surface of the filter screen (12) is movably connected to a movable roller (13). The center of the filter screen (12) is welded to a movable rod (14). The middle part of the inner wall of the machine body (1) is movably connected to a fixed shaft (15). The outer side wall of the fixed shaft (15) is fixedly connected to a rotating column (16). The outer side wall of the rotating column (16) is fixedly connected to a blade (17).

2. The raw material crushing device for PP plastic granulation according to claim 1, characterized in that: The feed inlet (2) is configured as a hollow rectangular tube with a gradually narrowing opening.

3. The raw material crushing device for PP plastic granulation according to claim 1, characterized in that: Each side wall of the machine body (1) is symmetrically provided with a return port (3) and a discharge port (4).

4. The raw material crushing device for PP plastic granulation according to claim 1, characterized in that: There are three movable rods (14), with the top of the middle movable rod (14) being higher than the movable rods (14) on both sides, and a spring connected to the bottom of the movable rod.

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