Modified polypropylene granulator

Abstract

The utility model discloses a modified polypropylene granulator which comprises a granulating box, one side of the inner wall of the granulating box is rotatably matched with a driving roller, the driving roller is fixedly connected with a plurality of granulating cutters, a negative pressure cavity is arranged in the granulating box, the upper side of the negative pressure cavity is provided with a linkage opening, the inner wall of the linkage opening is fixedly connected with a first filter screen, and the inner wall of the first filter screen is fixedly connected with a second filter screen. A driving opening is formed in the portion, located on one side of the negative pressure cavity, in the grain cutting box. By arranging the negative pressure cavity, the air exhauster, the linkage port, the communication port and other structures, dust can be adsorbed from two aspects of a cutting area and a discharging area in the pelletizing operation process, suspension of the dust generated during cutting in air is reduced, the dust content in the working environment is reduced, the cutting working environment is improved, and the cutting efficiency is improved. And meanwhile, the dust adsorbed on the surfaces of the particles during discharging can be treated, so that the discharged particles are cleaner, and the overall quality of the product is favorably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of polypropylene processing equipment, specifically a modified polypropylene pelletizer. Background Technology

[0002] Modified polypropylene is a material made by adding various modifiers to polypropylene and using physical and chemical methods to change its original properties so that it can better meet the needs of different application scenarios. A modified polypropylene pelletizer is a device that cuts the modified polypropylene material from strips, blocks, etc. into pellets of certain specifications in a continuous manner after the polymerization and other related processing steps are completed. This facilitates the subsequent packaging, transportation, storage, and further molding and processing of the modified polypropylene material. Polypropylene pelletizers are commonly used in this field.

[0003] In the typical processing, modified polypropylene material, which has been processed into continuous strips or blocks, is first stably conveyed to a pelletizer via a specific conveying device. The pelletizer is usually equipped with cylindrical cutting blades. The high-speed rotation of the cutting blades cuts the incoming strip-shaped modified polypropylene material into pellets. However, during the pelletizing process, when the modified polypropylene material is cut and broken into individual pellets, this process is similar to crushing a solid. Inevitably, some small fragments will detach from the material, forming dust. This dust not only affects the working environment but also causes the outer surface of the pelletized material to absorb dust, affecting the appearance quality of the pellets. Therefore, it is essential to design a modified polypropylene pelletizer that is both practical and has a dust removal function. Utility Model Content

[0004] The purpose of this invention is to provide a modified polypropylene pelletizer to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modified polypropylene pelletizer, including a pelletizing box, a drive roller rotatably fitted on one side of the inner wall of the pelletizing box, a plurality of pelletizing blades fixedly connected on the drive roller, a negative pressure chamber provided inside the pelletizing box, a linkage port opened on the upper side of the negative pressure chamber, a first filter screen fixedly connected to the inner wall of the linkage port, a drive port opened inside the pelletizing box and on one side of the negative pressure chamber, and two air pumps cooperating with the negative pressure chamber fixedly connected to one side of the inner wall of the drive port;

[0006] A discharge port is opened on one side of the inner wall of the pelletizing box, and a connecting port is opened on the lower side of the inner wall of the discharge port. A second filter screen is fixedly connected to the inner wall of the connecting port. A filter assembly is provided on the inner wall of the negative pressure chamber. A drive motor that cooperates with the drive roller is fixedly connected to one side of the pelletizing box, and a feeding mechanism is provided on one side of the pelletizing box.

[0007] According to the above technical solution, the filter assembly includes a pull-out frame that slides on the inner wall of the negative pressure chamber, a filter port opened on one side of the pull-out frame, a filter cloth fixedly connected to the inner wall of the filter port, and an air inlet opened on the other side of the inner wall of the pull-out frame and cooperating with the connecting port.

[0008] According to the above technical solution, the feeding mechanism includes a feeding motor fixedly connected to one side of the pelletizing box and a feeding roller fixedly connected to one end of the feeding motor and located inside the pelletizing box.

[0009] According to the above technical solution, a baffle is fixedly connected to the inner wall of the pelletizing box, and the baffle is located on the upper side of the second filter screen.

[0010] According to the above technical solution, a collection frame is fixedly connected to one side of the pelletizing box and below the discharge port. An extension plate is fixedly connected to one side of the collection frame. A screening motor is fixedly connected to the lower side of the extension plate. A grate is slidably fitted to the lower side of the collection frame. A crank block is fixedly connected to the output end of the screening motor. A linkage block that rotates with the grate is rotatably fitted to the lower side of the crank block.

[0011] According to the above technical solution, two guide blocks are fixedly connected to one side of the mesh, and a limiting rod that slides with the collection frame is fixedly connected to one side of each of the two guide blocks.

[0012] According to the above technical solution, light curtain sensors are fixedly connected to both sides of the inner wall of the pelletizing box, and the two light curtain sensors are located on one side of the feeding roller.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: By setting up a negative pressure chamber, an air pump, and linkage ports and connecting ports, this utility model can adsorb dust from both the cutting area and the discharge area during the pelletizing operation, reducing the amount of dust suspended in the air during cutting, lowering the dust content in the working environment, improving the cutting working environment, and protecting operators from excessive dust interference. At the same time, it can also treat the dust adsorbed on the surface of the particles during discharge, making the discharged particles cleaner and helping to improve the overall quality of the product. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the pelletizing box of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall three-dimensional cross-sectional structure of this utility model;

[0018] Figure 4 This is a side view of the three-dimensional structure of this utility model;

[0019] Figure 5 This is the utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0020] Figure 6 This is a schematic diagram of the unfolded three-dimensional structure of the pull-out frame of this utility model;

[0021] In the diagram: 1. Pelletizing box; 2. Drive roller; 3. Pelletizer; 4. Negative pressure chamber; 5. Linkage port; 6. First filter screen; 7. Drive port; 8. Air extractor; 9. Discharge port; 10. Connecting port; 11. Second filter screen; 12. Filter assembly; 121. Pull-out frame; 122. Filter port; 123. Filter cloth; 124. Air inlet; 13. Drive motor; 14. Feeding mechanism; 141. Feeding motor; 142. Feeding roller; 15. Baffle; 16. Collection frame; 17. Extension plate; 18. Screening motor; 19. Grate; 20. Crank block; 21. Linkage block; 22. Guide block; 23. Limiting rod; 24. Light curtain sensor. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-6The present invention provides a technical solution: a modified polypropylene pelletizer, including a pelletizing box 1, a drive roller 2 rotatably fitted on one side of the inner wall of the pelletizing box 1, a plurality of pelletizing blades 3 fixedly connected on the drive roller 2, a negative pressure chamber 4 is provided inside the pelletizing box 1, a linkage port 5 is opened on the upper side of the negative pressure chamber 4, a first filter screen 6 is fixedly connected to the inner wall of the linkage port 5, a drive port 7 is opened inside the pelletizing box 1 and on one side of the negative pressure chamber 4, and two air pumps 8 that cooperate with the negative pressure chamber 4 are fixedly connected to one side of the inner wall of the drive port 7.

[0024] A discharge port 9 is opened on one side of the inner wall of the pelletizing box 1. A connecting port 10 is opened on the lower side of the inner wall of the discharge port 9. A second filter screen 11 is fixedly connected to the inner wall of the connecting port 10. A filter assembly 12 is provided on the inner wall of the negative pressure chamber 4. A drive motor 13 that cooperates with the drive roller 2 is fixedly connected to one side of the pelletizing box 1. A feeding mechanism 14 is provided on one side of the pelletizing box 1.

[0025] Please see Figure 3 The filter assembly 12 includes a pull-out frame 121 that slides on the inner wall of the negative pressure chamber 4, a filter port 122 opened on one side of the pull-out frame 121, a filter cloth 123 fixedly connected to the inner wall of the filter port 122, and an air inlet 124 opened on the other side of the inner wall of the pull-out frame 121 and cooperating with the connecting port 10. When the vacuum pump 8 is pumping air, the limiting rod 23 can filter the dust in the gas generated by the vacuum pump 8 to avoid the dust from affecting the vacuum pump 8. At the same time, it can collect the dust into the interior of the pull-out frame 121 for easy subsequent unified processing.

[0026] Please see Figure 2 The feeding mechanism 14 includes a feeding motor 141 fixedly connected to one side of the pelletizing box 1 and a feeding roller 142 fixedly connected to one end of the feeding motor 141 and located inside the pelletizing box 1. The feeding motor 141 drives the feeding roller 142 to rotate, thereby realizing the conveying of materials.

[0027] Please see Figure 2 A baffle 15 is fixedly connected to the inner wall of the pelletizing box 1. The baffle 15 is located above the second filter screen 11. When the pelletizing knife 3 pelletizes, the generated particle material is blocked by the baffle 15 and falls onto the upper side of the second filter screen 11. When it is impacted, the dust adsorbed on the outside of the material will be separated from it. The dust is then treated by the suction of the connecting port 10, so that the pelletized material is clean and tidy.

[0028] Please see Figure 1 and Figure 5A collection frame 16 is fixedly connected to one side of the pelletizing box 1 and below the discharge port 9. An extension plate 17 is fixedly connected to one side of the collection frame 16. A screening motor 18 is fixedly connected to the lower side of the extension plate 17. A grate 19 is slidably fitted to the lower side of the collection frame 16. A crank block 20 is fixedly connected to the output end of the screening motor 18. A linkage block 21 that rotates with the grate 19 is rotatably fitted to the lower side of the crank block 20. The screening motor 18 drives the crank block 20 to rotate, and the crank block 20 pulls the grate 19 to reciprocate through the linkage block 21, thereby screening the particles that fall on the grate 19.

[0029] Please see Figure 5 Two guide blocks 22 are fixedly connected to one side of the grate 19. Each guide block 22 has a limiting rod 23 fixedly connected to one side of it, which slides with the collection frame 16. When the grate 19 is controlled, the limiting rod 23 will slide between the guide block 22 and the collection frame 16, thereby guiding the grate 19.

[0030] Please see Figure 2 Light curtain sensors 24 are fixedly connected to both sides of the inner wall of the pelletizing box 1. The two light curtain sensors 24 are located on one side of the feeding roller 142. Through the mutual influence between the light curtain sensors 24, when an obstacle enters between the two light curtain sensors 24, all the internal driving components are stopped, which can reduce the risk of personnel being pinched by the feeding roller 142 during operation. The light curtain sensors 24 can form a light curtain barrier by emitting and receiving light such as infrared light. When there is no obstacle between the two light curtain sensors 24, the light can be transmitted and received normally, and the equipment operates normally. When abnormal reception occurs, an instruction can be issued, which is the existing technology.

[0031] The implementation principle of this application is as follows: When using this device, the long strip of modified polypropylene material that needs to be granulated is driven by the feeding motor 141 to rotate the feeding roller 142, so that the feeding roller 142 pushes the long strip towards the drive roller 2. Then, the drive roller 2 drives multiple granulating blades 3 to rotate, thereby granulating the conveyed long strip material. The granulated material is then dropped to the lower side of the discharge port 9 by the baffle 15, thus realizing the granulation operation and discharge.

[0032] During the pelletizing process, two air extractors 8 are activated simultaneously to extract air from the inside of the pull-out frame 121, creating a certain negative pressure inside the pull-out frame 121. Part of the pressure enters from inside the linkage port 5, and under the action of the first filter screen 6, the dust generated when the pelletizing blade 3 cuts the material can be adsorbed. Another part enters from inside the air inlet 124 and the connecting port 10 to adsorb the dust adsorbed on the outside of the particles that fall on the upper side of the connecting port 10. This effectively reduces the amount of dust suspended in the air around the cutting area, improves the cutting working environment, and also makes the discharged particles cleaner, thus improving product quality.

[0033] After the material is discharged, the crank block 20 can be rotated by starting the screening motor 18, which pulls the linkage block 21 to make the grate 19 reciprocate under the collection frame 16. The limit rod 23 slides between itself and the collection frame 16 to guide the grate 19, thereby enabling the screening of the granulated material. This ensures that the particle size is uniform and more stable in the subsequent processing, avoiding problems such as product appearance defects and unstable physical properties caused by particle size differences.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modified polypropylene pelletizer, comprising a pelletizing box (1), characterized in that: A drive roller (2) is rotatably fitted on one side of the inner wall of the pelletizing box (1). Multiple pelletizing blades (3) are fixedly connected to the drive roller (2). A negative pressure chamber (4) is provided inside the pelletizing box (1). A linkage port (5) is opened on the upper side of the negative pressure chamber (4). A first filter screen (6) is fixedly connected to the inner wall of the linkage port (5). A drive port (7) is opened inside the pelletizing box (1) and on one side of the negative pressure chamber (4). Two air pumps (8) that cooperate with the negative pressure chamber (4) are fixedly connected to one side of the inner wall of the drive port (7). A discharge port (9) is opened on one side of the inner wall of the pelletizing box (1). A connecting port (10) is opened on the lower side of the inner wall of the discharge port (9). A second filter screen (11) is fixedly connected to the inner wall of the connecting port (10). A filter assembly (12) is provided on the inner wall of the negative pressure chamber (4). A drive motor (13) that cooperates with the drive roller (2) is fixedly connected to one side of the pelletizing box (1). A feeding mechanism (14) is provided on one side of the pelletizing box (1).

2. The modified polypropylene pelletizer according to claim 1, characterized in that: The filter assembly (12) includes a pull-out frame (121) that slides into the inner wall of the negative pressure chamber (4), a filter port (122) opened on one side of the pull-out frame (121), a filter cloth (123) fixedly connected to the inner wall of the filter port (122), and an air inlet (124) opened on the other side of the inner wall of the pull-out frame (121) and cooperating with the connecting port (10).

3. The modified polypropylene pelletizer according to claim 1, characterized in that: The feeding mechanism (14) includes a feeding motor (141) fixedly connected to one side of the pelletizing box (1) and a feeding roller (142) fixedly connected to one end of the feeding motor (141) and located inside the pelletizing box (1).

4. A modified polypropylene pelletizer according to claim 1, characterized in that: A baffle (15) is fixedly connected to the inner wall of the pelletizing box (1), and the baffle (15) is located on the upper side of the second filter screen (11).

5. A modified polypropylene pelletizer according to claim 1, characterized in that: A collection frame (16) is fixedly connected to one side of the pelletizing box (1) and below the discharge port (9). An extension plate (17) is fixedly connected to one side of the collection frame (16). A screening motor (18) is fixedly connected to the lower side of the extension plate (17). A grate (19) is slidably fitted to the lower side of the collection frame (16). A crank block (20) is fixedly connected to the output end of the screening motor (18). A linkage block (21) that rotates with the grate (19) is rotatably fitted to the lower side of the crank block (20).

6. A modified polypropylene pelletizer according to claim 5, characterized in that: Two guide blocks (22) are fixedly connected to one side of the mesh (19), and each of the two guide blocks (22) is fixedly connected to a limiting rod (23) that slides with the collection frame (16).

7. A modified polypropylene pelletizer according to claim 3, characterized in that: Light curtain sensors (24) are fixedly connected to both sides of the inner wall of the pelletizing box (1), and the two light curtain sensors (24) are located on one side of the feeding roller (142).

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