Granulator for processing modified PP (polypropylene) plastic

Abstract

The invention discloses a pelletizer for modified PP plastic processing, and belongs to the field of pelletizers.The pelletizer comprises a bin, an electric push rod is fixedly connected to the edge of the upper surface of the bin, connecting plates are symmetrically and fixedly connected to the positions, close to the bottom, of the outer surface of the bin, and a feeding port is connected to the position, close to the top, of the outer surface of the bin; the output end of the electric push rod is fixedly connected with a push plate, and a switching assembly used for granulation is arranged at the bottom of the outer surface of the stock bin. The cutter can continuously move towards the same direction for cutting, continuous pelletizing can be achieved, the situation that extruded materials are scratched due to back-and-forth movement is avoided, meanwhile, when particles with different diameters need to be manufactured, the discharging plate is rotated to drive the other set of five rows of discharging openings to move to the position under the groove, and the particles are manufactured. When the granulator is used, materials enter the other group of discharge ports through the grooves and are extruded, and particles with another diameter can be manufactured under the cutting of the cutter, so that the practicability of the granulator is improved, meanwhile, the waste of the materials is effectively avoided, and the cost is saved.

Description

Technical Field

[0001] The invention relates to the field of granulators, and more particularly to a granulator for processing modified PP plastics. Background Art

[0002] Modified plastics refer to plastic products that are processed by filling, blending, reinforcing and other methods on the basis of general-purpose plastics and engineering plastics to improve their flame retardancy, strength, impact resistance, toughness and other properties. During granulation, the plastic is heated and melted mainly through a spiral feed pipe with a heating function and then extruded through an extrusion die.

[0003] In the prior art, the stability and reliability of the movement of the cutter driven by the knife holder are poor, which in turn affects the granulation effect. To address this problem, a Chinese patent with authorization announcement number CN218053434U discloses a granulator for modified plastic processing. The device is equipped with a guide rod, and the knife holder can drive the guide rod to slide along the through hole when moving under the action of the cylinder, which greatly improves the stability and reliability of the movement of the cutter driven by the knife holder. However, in actual use, the prior art can only cut and granulate particles of a single diameter, and cannot produce particles of different diameters. In addition, when cutting, the cutter moves up and down, and the material will continue to be extruded from the extrusion hole. When moving up and resetting, it is easy to scratch the extruded material, resulting in material waste. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a granulator for processing modified PP plastics.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A granulator for processing modified PP plastics comprises a silo, an electric push rod is fixedly connected to the edge of the upper surface of the silo, a connecting plate is symmetrically fixedly connected to the outer surface of the silo near the bottom, a feed port is connected to the outer surface of the silo near the top, a push plate is fixedly connected to the output end of the electric push rod, and a switching component for granulation is arranged at the bottom of the outer surface of the silo.

[0007] The switching assembly includes a first fixed plate fixed at the bottom of the silo, a fixed ring fixed at the bottom of the outer surface of the silo, and a driving motor fixed to the upper surface of the connecting plate. The bottom of the fixed ring is rotatably connected to a discharge plate, and two groups of discharge ports are evenly opened on the lower surface of the discharge plate. Five groups of grooves are evenly opened inside the first fixed plate. A guide frame is fixedly connected to the outer surface of the fixed ring, and an air outlet is opened on the inner surface of the guide frame. A first rotating shaft is rotatably connected to the middle of the lower surface of the discharge plate, a cutter is symmetrically fixedly connected to the top of the outer surface of the first rotating shaft, a third gear is fixedly connected to the bottom of the first rotating shaft, and a second gear is fixedly connected to the output end of the driving motor. The outer surfaces of the second gear and the third gear are sleeved with synchronous belts.

[0008] Furthermore, a cleaning assembly is fixedly connected to the lower surface of the push plate, a scraper assembly is fixedly connected to the middle of the outer surface of the first rotating shaft, a V-shaped baffle is fixedly connected to one side of the connecting plate, the second gear and the third gear are both located below the V-shaped baffle, the two groups of discharge ports have different diameters and are both arranged in five rows, and each row has five rows, and the two groups of each row are spaced in sequence, and the five rows of discharge ports in each group correspond to the grooves one by one, the outer surface of the guide frame is symmetrically connected to the air intake pipe, and the lower surface of the connecting plate is connected to the screening assembly.

[0009] Furthermore, the scraper assembly includes two threaded rods fixed to the outer surface of the first rotating shaft and two arc-shaped racks fixed to the inner surface of the guide frame, the arc-shaped racks are respectively located on both sides, and the two arc-shaped racks are arranged opposite to each other, one upper and one lower. A first gear is fixedly connected to one side of the threaded rod, an internal threaded sleeve is threadedly connected to the outer surface of the threaded rod, a scraper is fixedly connected to the top of the internal threaded sleeve, a limiting rod is slidably connected to the inner bottom of the internal threaded sleeve, and one side of the limiting rod is fixedly connected to the outer surface of the first rotating shaft, and the first gear and the arc-shaped rack are meshed with each other.

[0010] Furthermore, the cleaning assembly includes five extrusion blocks fixed on the lower surface of the push plate, the lower surface of the extrusion block is provided with a storage groove, the inner top of the storage groove is fixedly connected with an insertion block, the outer surface of the insertion block is sleeved with a first spring, the bottom of the first spring is fixedly connected with a movable sleeve, and the top of the first spring is fixedly connected to the inner top of the storage groove.

[0011] Furthermore, the insert block is adapted to the discharge port with a small aperture, the movable sleeve is adapted to the discharge port with a large aperture, and the extrusion block is adapted to the groove.

[0012] Furthermore, the feed port includes a collecting frame fixed on the lower surface of the connecting plate and a second rotating shaft fixed on the lower surface of the third gear, a V-shaped pushing plate is symmetrically fixedly connected to the outer surface of the second rotating shaft, a screen plate is fixedly connected to the inner surface of the collecting frame, large-aperture filter screens and small-aperture filter screens are arranged in sequence on the upper surface of the screen plate, a waste collection assembly is connected to the middle of the lower surface of the screen plate, a material blocking assembly is symmetrically arranged inside the screen plate, and a bucket-shaped discharge bin is fixedly connected to the edge of the lower surface of the collecting frame.

[0013] Furthermore, the material blocking assembly includes a support shaft rotatably connected to the lower surface of the screen plate and a worm screw rotating inside the bucket-shaped discharge bin, the bottom of the support shaft is fixedly connected to a worm gear, the outer surface of the support shaft is symmetrically fixedly connected to material blocking blades, and arc grooves are provided on both sides of the material blocking blades.

[0014] Furthermore, the worm and the worm wheel are at the same horizontal height, the worm and the worm wheel are meshed with each other, and a rotating handle is fixedly connected to one side of the worm.

[0015] The waste collection assembly includes two waste pipes fixed inside the screen plate, the top of the inner surface of the waste pipe is fixedly connected to a second fixed plate, one side of the second fixed plate is hinged to a hinged plate, the bottom of the second fixed plate is rotatably connected to a third rotating shaft, and the top of the outer surface of the third rotating shaft is fixedly connected to a push rod.

[0016] Furthermore, the upper surface of the push rod and the lower surface of the second fixing plate are in contact with each other, and the hinge plate and the second fixing plate are both semicircular.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This solution sets a switching component to achieve the cutter to continuously move and cut in the same direction, which can continuously perform pelletizing and avoid scratching the extruded material due to the back and forth movement. At the same time, when it is necessary to produce pellets of different diameters, the discharging plate is rotated to drive another group of five discharge ports to move to the bottom of the groove. The material enters the inside of another group of discharge ports through the groove and is extruded. Under the cutting of the cutter, pellets of another diameter can be produced, thereby improving the practicality of the pelletizer, effectively avoiding material waste and saving costs.

[0019] 2. This solution sets a scraper assembly to enable the moving scraper to move in the opposite direction of the cutter surface and continuously scrape the cutter. As the cutter moves continuously, the scraper moves back and forth on the cutter surface through transmission to scrape off the adhered material, thereby ensuring the cleanliness of the cutter at all times and avoiding quality problems with the cut particles.

[0020] 3. This solution can realize flexible switching of the movable sleeve and the plug block according to the size of the aperture by setting a cleaning component, which can be suitable for cleaning discharge ports with different apertures, avoiding blockage caused by residual materials inside the discharge port, reducing the trouble of subsequent cleaning inside the discharge port, and greatly saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 The switching component structure of the present invention is schematically shown in FIG. Figure 1 ;

[0023] Figure 3 The switching component structure of the present invention is schematically shown in FIG. Figure 2 ;

[0024] Figure 4 The switching component structure of the present invention is schematically shown in FIG. Figure 3 ;

[0025] Figure 5 It is a schematic diagram of the structure of the scraper assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the cleaning component of the present invention;

[0027] Figure 7 It is a schematic diagram of the cross-sectional structure of the extrusion block of the present invention;

[0028] Figure 8 The structure of the screening assembly of the present invention is schematically shown in FIG. Figure 1 ;

[0029] Fig. 9 The structure of the screening assembly of the present invention is schematically shown in FIG. Figure 2 ;

[0030] Fig.10 It is a schematic diagram of the structure of the material blocking assembly of the present invention;

[0031] Fig.11 It is a schematic diagram of the structure of the waste collection component of the present invention.

[0032] Description of the numbers in the figure:

[0033] 1. Silo; 2. Electric push rod; 3. Connecting plate;

[0034] 4. Switching assembly; 41. Fixed ring; 42. Discharging plate; 43. Discharging port; 44. Guide frame;

[0035] 45, scraper assembly; 451, threaded rod; 452, first gear; 453, internal thread sleeve; 454, scraper; 455, arc-shaped rack;

[0036] 46. ​​cleaning assembly; 461. extrusion block; 462. movable sleeve; 463. first spring; 464. insert block; 465. storage slot;

[0037] 47, air outlet; 48, second gear; 49, first rotating shaft; 410, third gear; 411, synchronous belt; 412, cutter; 413, groove; 414, drive motor; 415, first fixing plate;

[0038] 5. Screening assembly; 51. Collection frame; 52. Screen plate; 53. Large-aperture filter screen; 54. Small-aperture filter screen;

[0039] 55, material blocking assembly; 551, worm; 552, worm wheel; 553, material blocking blade; 554, arc groove; 555, support shaft;

[0040] 56, waste collection assembly; 561, waste pipe; 562, second fixed plate; 563, hinge plate; 564, third rotating shaft; 565, ejector rod;

[0041] 57. Second rotating shaft; 58. V-shaped push plate; 59. Bucket-shaped discharge bin;

[0042] 6. Feed inlet; 7. Push plate. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0044] See also Figures 1 to 11 A granulator for processing modified PP plastics includes a silo 1, an electric push rod 2 is fixedly connected to the edge of the upper surface of the silo 1, a connecting plate 3 is symmetrically fixedly connected to the outer surface of the silo 1 near the bottom, a feed port 6 is connected to the outer surface of the silo 1 near the top, a push plate 7 is fixedly connected to the output end of the electric push rod 2, and a switching component 4 for granulation is arranged at the bottom of the outer surface of the silo 1.

[0045] like Figure 2 - Figure 4As shown, the switching assembly 4 includes a first fixed plate 415 fixed at the bottom of the silo 1, a fixed ring 41 fixed at the bottom of the outer surface of the silo 1 and a driving motor 414 fixed to the upper surface of the connecting plate 3, the bottom of the fixed ring 41 is rotatably connected to the discharge plate 42, the lower surface of the discharge plate 42 is evenly provided with two groups of discharge ports 43, five groups of grooves 413 are evenly provided inside the first fixed plate 415, the outer surface of the fixed ring 41 is fixedly connected to the guide frame 44, the inner surface of the guide frame 44 is provided with an air outlet 47, the middle of the lower surface of the discharge plate 42 is rotatably connected to the first rotating shaft 49, the top of the outer surface of the first rotating shaft 49 is symmetrically fixedly connected to the cutter 412, the bottom of the first rotating shaft 49 is fixedly connected to the third gear 410, the output end of the driving motor 414 is fixedly connected to the second gear 48, and the outer surfaces of the second gear 48 and the third gear 410 are sleeved with a synchronous belt 411.

[0046] A cleaning assembly 46 is fixedly connected to the lower surface of the push plate 7, a scraper assembly 45 is fixedly connected to the middle of the outer surface of the first rotating shaft 49, a V-shaped baffle is fixedly connected to one side of the connecting plate 3, the second gear 48 and the third gear 410 are both located below the V-shaped baffle, two groups of discharge ports 43 with different diameters are both arranged in five rows, and each row has five rows, and the two groups of each row are arranged in sequence at intervals, each group of five rows of discharge ports 43 corresponds one to one with the grooves 413, the outer surface of the guide frame 44 is symmetrically connected to the air intake pipe, and the lower surface of the connecting plate 3 is connected to the screening assembly 5.

[0047] During granulation, the material is conveyed to the inside of the silo 1 through the feed port 6, the switching assembly 4 is turned on to drive the push plate 7 to move inside the silo 1 to extrude the material, the material enters the inside of the discharge port 43 through the groove 413 and is extruded, the air is conveyed to the inside of the guide frame 44 through the air inlet pipe, the air is ejected from the inside of the five air outlets 47, the material extruded from the inside of the discharge port 43 is cooled and formed, at the same time, the driving motor 414 is turned on to drive the second gear 48 to rotate, the third gear 410 is driven to rotate synchronously through the transmission of the synchronous belt 411, and the third gear 410 drives the two cutters 41 through the first rotating shaft 49. The surface of the discharge plate 42 is rotated at a high speed to cut and granulate the material extruded from the discharge port 43. The cutter 412 continuously moves in the same direction for cutting, and can continuously perform granulation to avoid scratching the extruded material caused by the back and forth movement. At the same time, when it is necessary to produce particles of different diameters, the discharge plate 42 is rotated to drive another group of five discharge ports 43 to move to the bottom of the groove 413. The material enters into the inside of another group of discharge ports 43 through the groove 413 and is extruded. Under the cutting of the cutter 412, particles of another diameter can be produced, thereby improving the practicality of the granulator, effectively avoiding the waste of materials, and saving costs.

[0048] like Figure 5As shown, the scraper assembly 45 includes two threaded rods 451 fixed to the outer surface of the first rotating shaft 49 and two arc-shaped racks 455 fixed to the inner surface of the guide frame 44, the arc-shaped racks 455 are respectively located on both sides, and the two arc-shaped racks 455 are arranged opposite to each other, one upper and one lower. One side of the threaded rod 451 is fixedly connected to the first gear 452, the outer surface of the threaded rod 451 is threadedly connected to the inner threaded sleeve 453, the top of the inner threaded sleeve 453 is fixedly connected to the scraper 454, the inner bottom of the inner threaded sleeve 453 is slidably connected to a limiting rod, and one side of the limiting rod is fixedly connected to the outer surface of the first rotating shaft 49, and the first gear 452 and the arc-shaped rack 455 are meshed with each other.

[0049] When the cutter 412 continuously cuts and granulates, the material itself has a high temperature, and it is inevitable that some of the material will stick to the cutter 412. As the amount of sticking material increases, the cutter 412 will have a certain impact on the quality of the particles when cutting, and uneven granulation and burrs are likely to occur.

[0050] Therefore, during the movement of the cutter 412, the first rotating shaft 49 simultaneously drives the threaded rod 451 and the first gear 452 to perform circular motion. The first gear 452 rotates when in contact with and meshes with the arc-shaped rack 455 below, driving the threaded rod 451 to rotate. As a result, under the action of the thread, the internal threaded sleeve 453 is driven to move in a certain direction, driving the scraper 454 to move on the surface of the cutter 412 to scrape off the material adhered to the surface of the cutter 412. When the first gear 452 leaves the arc-shaped rack 455 below, it will engage with the other gear 452. The arc-shaped rack 455 above the group is in contact and meshing, which will drive the first gear 452 to rotate in the opposite direction, drive the threaded rod 451 to rotate in the opposite direction, thereby driving the internal threaded sleeve 453 to move in the opposite direction, and drive the scraper 454 to move in the opposite direction on the surface of the cutter 412, continuously scraping the cutter 412, so that when the cutter 412 continues to move, the scraper 454 continuously moves back and forth on the surface of the cutter 412 through transmission, scraping off the adhered material, thereby ensuring the cleanliness of the cutter 412 at all times and avoiding quality problems with the cut particles.

[0051] like Figure 6 - Figure 7 As shown, the cleaning assembly 46 includes five extrusion blocks 461 fixed on the lower surface of the push plate 7, the lower surface of the extrusion block 461 is provided with a receiving groove 465, the inner top of the receiving groove 465 is fixedly connected with an insert block 464, the outer surface of the insert block 464 is sleeved with a first spring 463, the bottom of the first spring 463 is fixedly connected with a movable sleeve 462, and the top of the first spring 463 is fixedly connected to the inner top of the receiving groove 465.

[0052] The insert block 464 is adapted to the discharge port 43 with a small aperture, the movable sleeve 462 is adapted to the discharge port 43 with a large aperture, and the extrusion block 461 is adapted to the groove 413 .

[0053] As the materials in the silo 1 are used up, some materials will remain in the discharge port 43. When the materials remaining in the discharge port 43 are pushed over time, the materials will solidify inside the discharge port 43, which will easily cause the discharge port 43 to be blocked. When cleaning, it will not only delay time, but also increase the workload due to the large amount of materials.

[0054] When the material in the silo 1 is used up, the push plate 7 will drive the extrusion block 461 to move into the groove 413, and at the same time drive the plug block 464 and the movable sleeve 462 to move into the groove 413 synchronously. When the extrusion block 461 enters the groove 413, if the groove 413 corresponds to the small-aperture discharge port 43, the plug block 464 will be completely inserted into the discharge port 43, pushing down the residual material in the small-aperture discharge port 43, while the movable sleeve 462 cannot enter the small-aperture discharge port 43. , it will be blocked by the discharge plate 42, the first spring 463 is compressed, and the movable sleeve 462 enters the interior of the receiving groove 465. When cleaning the large-aperture discharge port 43, the plug block 464 and the movable sleeve 462 can both enter the interior thereof, thereby effectively cleaning the large-aperture discharge port 43. This makes the cleaning component 46 suitable for cleaning discharge ports 43 of different apertures, thereby avoiding blockage caused by residual materials inside the discharge port 43, reducing the trouble of subsequent cleaning inside the discharge port 43, and greatly saving labor.

[0055] like Figure 8 - Fig. 9 As shown, the screening assembly 5 includes a collecting frame 51 fixed on the lower surface of the connecting plate 3 and a second rotating shaft 57 fixed on the lower surface of the third gear 410, a V-shaped pushing plate 58 is symmetrically fixedly connected to the outer surface of the second rotating shaft 57, a sieve plate 52 is fixedly connected to the inner surface of the collecting frame 51, a large-aperture filter screen 53 and a small-aperture filter screen 54 are sequentially arranged on the upper surface of the sieve plate 52, a waste collecting assembly 56 is connected to the middle of the lower surface of the sieve plate 52, a material blocking assembly 55 is symmetrically arranged inside the sieve plate 52, and a bucket-shaped discharge bin 59 is fixedly connected to the edge of the lower surface of the collecting frame 51.

[0056] When all the cut particles enter the interior of the collecting frame 51, and the particles contain waste scraped from the surface of the cutter 412 and large particles stuck together between the particles, they need to be screened. When the particles enter the interior of the collecting frame 51, the third gear 410 drives the first rotating shaft 49 to rotate and at the same time drives the second rotating shaft 57 to rotate. The second rotating shaft 57 drives two V-shaped push plates 58 to rotate inside the collecting frame 51, and continuously pushes the particles inside the collecting frame 51. The moving material can quickly fall from the large-aperture filter 53 or the small-aperture filter 54, while large particles and waste larger than the particle diameter remain inside the collecting frame 51, thereby quickly screening and removing impurities from the material, reducing the use of driving force, and screening during granulation to reduce the time of the entire granulation process.

[0057] like Fig.10 As shown, the material blocking assembly 55 includes a support shaft 555 rotatably connected to the lower surface of the screen plate 52 and a worm 551 rotating inside the bucket-shaped discharge bin 59, a worm gear 552 is fixedly connected to the bottom of the support shaft 555, and material blocking blades 553 are symmetrically fixedly connected to the outer surface of the support shaft 555, and arc grooves 554 are provided on both sides of the material blocking blades 553.

[0058] The worm 551 and the worm wheel 552 are at the same level, the worm 551 and the worm wheel 552 are meshed with each other, and a rotating handle is fixedly connected to one side of the worm 551 .

[0059] When the large-aperture discharge port 43 is used for granulation, the small-aperture filter screen 54 with a small aperture needs to be shielded so that the particles fall from the inside of the large-aperture filter screen 53 to prevent large particles from being stuck in the holes inside the small-aperture filter screen 54. The worm 551 is rotated to drive the worm gear 552 to rotate, and the worm gear 552 drives the two material-blocking blades 553 to rotate, and the material-blocking blades 553 are rotated to the bottom of the small-aperture filter screen 54 to shield the small-aperture filter screen 54 to ensure the fluidity of the large-aperture filter screen 53, so that large particles can be filtered and screened. When the small-diameter discharge port 43 is used, the material-blocking blades 553 need to be rotated to the bottom of the large-aperture filter screen 53 to shield the large-aperture filter screen 53 to prevent small particles from falling from the inside of the large-aperture filter screen 53, so that particles slightly larger than small particles can be screened, so that the large-aperture filter screen 53 or the small-aperture filter screen 54 can be flexibly selected according to the particle size, thereby improving the practicality of the equipment.

[0060] like Fig.11As shown, the waste collection assembly 56 includes two waste tubes 561 fixed inside the screen plate 52, the top of the inner surface of the waste tube 561 is fixedly connected to a second fixed plate 562, one side of the second fixed plate 562 is hinged with a hinged plate 563, the bottom of the second fixed plate 562 is rotatably connected to a third rotating shaft 564, and the top of the outer surface of the third rotating shaft 564 is fixedly connected to a top rod 565.

[0061] The upper surface of the push rod 565 and the lower surface of the second fixing plate 562 are in contact with each other, and the hinge plate 563 and the second fixing plate 562 are both semicircular.

[0062] After screening is completed, some oversized particles and irregular waste remain inside the collecting frame 51 and need to be collected and reused. At this time, the third rotating shaft 564 is opened and rotated to drive the push rod 565 to rotate a certain angle, so that the push rod 565 moves to the bottom of the second fixed plate 562, and the hinged plate 563 loses support and naturally droops at a ninety degree angle with the second fixed plate 562. When the V-shaped pushing plate 58 pushes the waste on the screen plate 52, due to the V-shaped pushing plate 58 is V-shaped, the waste is all concentrated at the corner of the V-shaped pushing plate 58, and the movement trajectory of the corner of the V-shaped pushing plate 58 will pass above the waste pipe 561. When the V-shaped pushing plate 58 pushes the material to move above the waste pipe 561, the material is all discharged into the waste pipe 561 and falls through the waste pipe 561 to be collected in the collecting container below.

[0063] Usage: First, when the material is extruded through the discharge port 43, it is cut into particles by the fast-moving cutter 412. The discharge ports 43 of different diameters are driven to move to the bottom of the groove 413 by rotating the discharge plate 42, so as to manufacture particles of different diameters. The scraper assembly 45 can scrape off the material adhered to the surface of the cutter 412 to improve the cutting quality. At the same time, the cleaning assembly 46 can clean the residual material inside the discharge port 43.

[0064] Secondly, the cut and shaped particles enter the interior of the collecting frame 51 and are constantly stirred by the two V-shaped pushing plates 58 to accelerate the screening and filtering of the particles. At the same time, the material blocking assembly 55 can switch the working states of the small-aperture filter 54 and the large-aperture filter 53, so that particles of different diameters can be filtered. It is not only simple to operate, but also fast and convenient. Under the action of the waste collection assembly 56, all waste can be discharged, collected and utilized through the waste pipe 561.

[0065] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A granulator for processing modified PP plastics, comprising a silo (1), an electric push rod (2) is fixedly connected to the edge of the upper surface of the silo (1), a connecting plate (3) is symmetrically fixedly connected to the outer surface of the silo (1) near the bottom, a feed port (6) is connected to the outer surface of the silo (1) near the top, and a push plate (7) is fixedly connected to the output end of the electric push rod (2); Features: A switching assembly (4) for granulation is provided at the bottom of the outer surface of the silo (1); The switching assembly (4) comprises a first fixed plate (415) fixed to the bottom of the silo (1), a fixed ring (41) fixed to the bottom of the outer surface of the silo (1), and a driving motor (414) fixed to the upper surface of the connecting plate (3); the bottom of the fixed ring (41) is rotatably connected to a discharge plate (42); two groups of discharge ports (43) are evenly arranged on the lower surface of the discharge plate (42); five groups of grooves (413) are evenly arranged inside the first fixed plate (415); the outer surface of the fixed ring (41) is fixedly connected to A guide frame (44), an air outlet (47) is provided on the inner surface of the guide frame (44), a first rotating shaft (49) is rotatably connected to the middle of the lower surface of the discharge plate (42), a cutter (412) is symmetrically fixedly connected to the top of the outer surface of the first rotating shaft (49), a third gear (410) is fixedly connected to the bottom of the first rotating shaft (49), a second gear (48) is fixedly connected to the output end of the drive motor (414), and a synchronous belt (411) is sleeved on the outer surface of the second gear (48) and the third gear (410).

2. A granulator for processing modified PP plastics according to claim 1, characterized in that: The lower surface of the push plate (7) is fixedly connected to a cleaning assembly (46), the middle of the outer surface of the first rotating shaft (49) is fixedly connected to a scraper assembly (45), one side of the connecting plate (3) is fixedly connected to a V-shaped baffle, the second gear (48) and the third gear (410) are both located below the V-shaped baffle, the two groups of discharge ports (43) are of different diameters and are both arranged in five rows, and each row has five rows, and the two groups of each row are arranged in sequence, and each group of five rows of discharge ports (43) correspond to the grooves (413) one by one, the outer surface of the guide frame (44) is symmetrically connected to an air intake pipe, and the lower surface of the connecting plate (3) is connected to a screening assembly (5).

3. A granulator for processing modified PP plastics according to claim 2, characterized in that: The scraper assembly (45) comprises two threaded rods (451) fixed on the outer surface of the first rotating shaft (49) and two arc-shaped racks (455) fixed on the inner surface of the guide frame (44), the arc-shaped racks (455) are respectively located on both sides, and the two arc-shaped racks (455) are arranged with teeth one above and one below facing each other, one side of the threaded rod (451) is fixedly connected to a first gear (452), the outer surface of the threaded rod (451) is threadedly connected to an internal threaded sleeve (453), the top of the internal threaded sleeve (453) is fixedly connected to a scraper (454), the inner bottom of the internal threaded sleeve (453) is slidably connected to a limit rod, and one side of the limit rod is fixedly connected to the outer surface of the first rotating shaft (49), and the first gear (452) and the arc-shaped rack (455) are meshed with each other.

4. A granulator for processing modified PP plastics according to claim 3, characterized in that: The cleaning assembly (46) includes five extrusion blocks (461) fixed on the lower surface of the push plate (7), the lower surface of the extrusion block (461) is provided with a receiving groove (465), the inner top of the receiving groove (465) is fixedly connected with an insert block (464), the outer surface of the insert block (464) is sleeved with a first spring (463), the bottom of the first spring (463) is fixedly connected with a movable sleeve (462), and the top of the first spring (463) is fixedly connected to the inner top of the receiving groove (465).

5. A granulator for processing modified PP plastics according to claim 4, characterized in that: The insert block (464) is adapted to the small-diameter discharge port (43), the movable sleeve (462) is adapted to the large-diameter discharge port (43), and the extrusion block (461) is adapted to the groove (413).

6. A granulator for processing modified PP plastics according to claim 5, characterized in that: The feed port (6) comprises a collecting frame (51) fixed on the lower surface of the connecting plate (3) and a second rotating shaft (57) fixed on the lower surface of the third gear (410); a V-shaped pushing plate (58) is symmetrically fixedly connected to the outer surface of the second rotating shaft (57); a sieve plate (52) is fixedly connected to the inner surface of the collecting frame (51); a large-aperture filter screen (53) and a small-aperture filter screen (54) are arranged in sequence on the upper surface of the sieve plate (52); a waste collecting assembly (56) is connected to the middle of the lower surface of the sieve plate (52); a material blocking assembly (55) is symmetrically arranged inside the sieve plate (52); and a bucket-shaped discharge bin (59) is fixedly connected to the edge of the lower surface of the collecting frame (51).

7. A granulator for processing modified PP plastics according to claim 6, characterized in that: The material blocking assembly (55) includes a support shaft (555) rotatably connected to the lower surface of the screen plate (52) and a worm (551) rotatably inside the bucket-shaped discharge bin (59), a worm gear (552) being fixedly connected to the bottom of the support shaft (555), and material blocking blades (553) being symmetrically fixedly connected to the outer surface of the support shaft (555), and arc grooves (554) are provided on both sides of the material blocking blades (553).

8. A granulator for processing modified PP plastics according to claim 7, characterized in that: The worm (551) and the worm wheel (552) are at the same level, the worm (551) and the worm wheel (552) are meshed with each other, and a rotating handle is fixedly connected to one side of the worm (551).

9. A granulator for processing modified PP plastics according to claim 8, characterized in that: The waste collection assembly (56) includes two waste pipes (561) fixed inside the screen plate (52), the top of the inner surface of the waste pipe (561) is fixedly connected to a second fixed plate (562), one side of the second fixed plate (562) is hinged with a hinged plate (563), the bottom of the second fixed plate (562) is rotatably connected to a third rotating shaft (564), and the top of the outer surface of the third rotating shaft (564) is fixedly connected to a push rod (565).

10. A granulator for processing modified PP plastics according to claim 9, characterized in that: The upper surface of the push rod (565) and the lower surface of the second fixing plate (562) are in contact with each other, and the hinge plate (563) and the second fixing plate (562) are both semicircular.

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