An efficient drying device for modified PP plastic particles and its drying method

Abstract

The present invention discloses an efficient drying device for modified PP plastic particles and its drying method, belonging to the technical field of plastic pretreatment. It includes a drying hopper, the bottom of the drying hopper is connected with a guiding part, and the bottom of the guiding part has a discharge port. A plurality of material storage components are rotatably connected in the inner cavity of the drying hopper. In the present invention, through the design of a plurality of material storage components, different raw material particles can be added into a plurality of barrels according to the modification needs. When the raw material particles are stored in the barrels, the barrels in a normally closed state can avoid the intrusion of air and prevent the raw material particles from getting damp, prolonging the storage time of the particles in the drying hopper. And when a certain barrel is in a state to be dried, by controlling the driving part to drive the driving rod to rotate, the damp barrel can be sent into the heating and guiding component, and independent drying treatment can be selectively carried out for the anti-moisture measures that are about to expire or newly added granular materials, improving the drying effect of the plastic particles during the modification process.

Description

Technical Field

[0001] The present invention belongs to the technical field of plastic pretreatment, and particularly relates to a high-efficiency drying device for modified PP plastic particles and a drying method thereof. Background Art

[0002] Plastic particles refer to granular plastics. During the production process of polypropylene plastic particles, in order to ensure the quality of the final product, it is necessary to dry the raw materials. Since polypropylene particles have the property of absorbing moisture, if the surface and internal moisture cannot be effectively removed before modification processing, defects such as bubbles and silver streaks are likely to occur during subsequent processing, and at the same time, the melt flow rate is affected. Currently, the industry generally uses a hopper drying system;

[0003] The Chinese invention patent with the authorization announcement number CN118082036B discloses a plastic particle drying device, belonging to the field of plastic particle drying and processing. It includes a drying box. An introduction mechanism for introducing plastic particles is installed at the top of the drying box. A hot air blower for drying plastic particles is installed at the top of the drying box on one side of the introduction mechanism. A transmission mechanism for moving plastic particles is installed inside the drying box. A gas dehumidification and filtration unit is installed on one side of the drying box and aligned with one side of the transmission mechanism. A discharging mechanism for discharging the dried plastic particles is installed at the bottom of the drying box; the above equipment can achieve the component processing of a large number of plastic particles and improve the overall heating effect of the plastic particles. However, in actual use, plastic particles with different production cycles and different modification ratios require different drying temperatures, and it is necessary to externally install different process sections for drying treatment, which has room for improvement. Summary of the Invention

[0004] The purpose of the present invention is to propose a high-efficiency drying device for modified PP plastic particles and a drying method thereof to solve the problem that plastic particles with different production cycles and different modification ratios require different drying temperatures and need to externally install different process sections for drying treatment.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme:

[0006] A high-efficiency drying device for modified PP plastic particles includes a drying hopper. The bottom of the drying hopper is connected with a guiding part, and the bottom of the guiding part has a discharge port. A plurality of material storage components are rotatably connected inside the drying hopper. One side of the drying hopper has a protruding cavity, and a heating and guiding component is slidably connected inside the protruding cavity;

[0007] The heating guide assembly includes a guide cover, which has a drying medium cavity therein, and the drying medium cavity is provided with a plurality of air outlet nozzles, which are connected to the guide cover. The corresponding material storage assembly is transferred into the guide cover for independent drying. One side of the heating guide assembly is connected to a heating and blowing assembly, which is installed outside the drying hopper. A positioning assembly for driving the guide cover to move back and forth is provided in the protruding cavity, so that the movement of the guide cover avoids interfering with the rotation and switching of the material storage assembly.

[0008] As a further description of the above technical solution:

[0009] The drying hopper has a partition at the bottom, and a driving part is installed on the top of the partition, and openings are opened at the positions on the top of the partition corresponding to the rotation stroke of the material storage component. The material storage component is connected to at least one opening after a single rotation, and a driving rod is rotatably connected to the top of the driving part, and the outer peripheral side of the driving rod is connected to the material storage component at the corresponding position through a connecting plate.

[0010] As a further description of the above technical solution:

[0011] The material storage assembly includes a barrel, the top of the barrel has a feed port, and the bottom of the barrel has a quantitative discharge assembly, the outer peripheral side of the barrel is provided with a plurality of heat exchange grooves along the axis, and the bottom of the heat exchange groove is provided with a receiving groove, and a blocking block is provided in the receiving groove, and the blocking block is configured to be slidably connected to the heat exchange groove, and the ventilation volume of the barrel is controlled by closing the heat exchange groove through the blocking block.

[0012] As a further description of the above technical solution:

[0013] A filling pad is connected to the top of the shielding block. The width and length of the filling pad are greater than the width and length of the shielding block. The gap of the accommodating groove is closed by the filling pad to improve the sealing effect.

[0014] As a further description of the above technical solution:

[0015] Sliding holes are opened between the multiple longitudinal heat exchange grooves, and guide rods are slidably connected in the sliding holes, and the two ends of the guide rods are connected to the blocking blocks at adjacent positions, and a support ring is connected between the guide rods at the top, and the support ring is located at the top of the barrel. The inner cavity of the guide cover is connected to pressing parts on both sides of the barrel corresponding to the barrel. The cross-section of the front side of the pressing part is conical, and it moves downward through the conical contact support ring on the front side of the pressing part.

[0016] As a further description of the above technical solution:

[0017] A plurality of second springs are connected to the bottom of the support ring corresponding to the position of the guide rod. The two ends of the second spring are respectively connected to the corresponding positions of the support ring and one side of the barrel. The rear side of the guide cover is connected with a telescopic rod. The other end of the telescopic rod is connected to one side inside the protruding cavity of the drying hopper. A first spring is sleeved outside the telescopic rod, and the two ends of the first spring are respectively connected to the guide cover and one side inside the protruding cavity.

[0018] As a further description of the above technical solution:

[0019] The rear side of the guide cover is connected to the heating and air blowing assembly through a pipeline. The front side of the guide cover has an arc portion, and the air outlet nozzle is connected to the inner side of the arc portion. The positioning assembly includes a control board and a driven gear. The driven gear is rotatably connected to the top of the partition board. Both sides of the driven gear are engaged with racks. One of the racks is connected to one side of the control board, and the other rack is connected to the bottom of the guide cover. The rack connected to the bottom of the guide cover passes through the hole opened on the side wall of the drying hopper and extends outside the drying hopper. By pressing the control board, the other rack and the guide cover are driven to move to the drying position.

[0020] As a further description of the above technical solution:

[0021] The front end of the control board has an inclined surface, and an extrusion wedge plate is in contact with one side of the inclined surface of the control board. The extrusion wedge plate is connected to the outside of the driving rod through a connecting rod. By rotating the driving rod, the inclined surface of the extrusion wedge plate squeezes the control board to move outward. One side of the control board is connected with a sliding rod. A sliding sleeve is sleeved outside the sliding rod. The sliding cylinder is connected to the top of the partition board. A third spring is sleeved outside the sliding rod, and the two ends of the third spring are respectively connected to the corresponding positions of the sliding sleeve and one side of the control board.

[0022] As a further description of the above technical solution:

[0023] A cover body is provided on the top of the drying hopper. The top of the cover body has a corresponding feeding pipeline. An exhaust pipeline is provided on the top of the cover body, and the exhaust pipeline is located at the top of the heating and guiding assembly at the corresponding position for heating and drying.

[0024] An efficient drying method for modified PP plastic particles specifically includes the following steps:

[0025] Add different plastic particles into the corresponding storage components according to the process requirements. When the storage components rotate in the drying hopper, the rotation of the storage components can adjust the position corresponding to the guide cover. When the storage component to be dried rotates to one side of the guide cover at the corresponding position, the guide cover can spray the gas sent in after the external heating and air blowing assembly blows and heats the air. The raw materials corresponding in the storage component can be dried through the sprayed gas.

[0026] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, through the designed multiple material storage components, different raw material particles can be added into multiple barrels according to the modification requirements. When the raw material particles are stored in the barrels, the barrels in the normal closed state can prevent air intrusion from causing the raw material particles to get damp, prolonging the storage time of the particles in the drying hopper. And when a certain barrel is in the state of waiting to be dried, by controlling the driving part to drive the driving rod to rotate, the damp barrel can be sent into the heating and guiding component, and independent drying treatment can be selectively carried out for the moisture-proof measures that are approaching the expiration date or newly added granular materials, improving the drying effect of the plastic particles in the modification process.

[0028] 2. In the present invention, through the designed support ring and pressing member, after the barrel to be dried moves to one side of the guiding cover, the guiding cover can be sleeved outside the barrel to be dried under the control of the positioning component. At this time, the front conical part of the pressing member can squeeze the support ring, and the support ring can drive the guiding rod to move downward under the extrusion, and the downward movement of the guiding rod can make the shielding block enter the accommodating groove to open the heat exchange groove gap, and the air outlet nozzle in the guiding cover can spray heating air to heat the internal particles. Through the closable heat exchange groove and the pressing trigger of the support ring, heat exchange drying is realized after triggering, and no hot air exchange occurs between multiple barrels, preventing the damp water vapor from drying from invading other barrels and maintaining the independent storage stability of the particles in each barrel.

[0029] 3. In the present invention, when the driving part drives the driving rod and the barrel to rotate, the driving rod can synchronously drive the extrusion wedge plate to move through the connecting rod on the outer periphery side. The movement of the extrusion wedge plate can squeeze the control plate through the front inclined surface. When the control plate is squeezed, it can drive the driven gear to rotate through the rack, and the rotation of the driven gear can drive the other rack and the guiding cover to move inward. The guiding cover moving inward can be sleeved outside the barrel at the corresponding position, and when the barrel rotates into the corresponding position, the positioning of the guiding cover is triggered to output drying air, which is beneficial to avoiding interference with the rotation of the barrel through the retractable guiding cover. Through the guiding cover sleeved outside the barrel, multiple air outlet nozzles arranged oppositely on the circumference can improve the convective heating effect on the materials in the barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0031] Figure 2 is a schematic top view structure diagram of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0032] Figure 3Schematic diagram of the side structure of the drying hopper of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0033] Figure 4 Schematic diagram of the structure of the storage component of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0034] Figure 5 Proposed by the present invention Figure 4 Schematic diagram of the enlarged structure of part A in

[0035] Figure 6 Schematic diagram of the assembly structure of the storage component of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0036] Figure 7 Proposed by the present invention Figure 6 Schematic diagram of the enlarged structure of part B in

[0037] Figure 8 Schematic diagram of the structure of the positioning component of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0038] Figure 9 Schematic diagram of the disassembled structure of the storage component of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0039] Figure 10 Schematic diagram of a partial side structure of an efficient drying device for modified PP plastic particles proposed by the present invention;

[0040] Figure 11 Schematic diagram of the disassembled structure of an efficient drying device for modified PP plastic particles proposed by the present invention.

[0041] Legend:

[0042] 1. Drying hopper; 2. Guide part; 3. Heating and blowing assembly; 4. Heating and guiding assembly; 401. Guide cover; 402. Air outlet nozzle; 403. Pressing part; 404. Telescopic rod; 405. First spring; 5. Storage component; 501. Barrel; 502. Blocking block; 503. Guide rod; 504. Second spring; 505. Support ring; 506. Filling pad; 507. Accommodating groove; 6. Positioning component; 601. Control board; 602. Driven gear; 603. Rack; 604. Extrusion wedge plate; 605. Connecting rod; 606. Slide bar; 607. Third spring; 608. Slide sleeve; 7. Driving part; 8. Driving rod; 9. Exhaust pipe. Detailed implementation mode

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0044] Please refer to Figures 1 - 11 , the present invention provides a technical solution: an efficient drying device for modified PP plastic particles, including a drying hopper 1. A guiding part 2 is connected to the bottom of the drying hopper 1, and the bottom of the guiding part 2 has a discharge port. A plurality of material storage components 5 are rotatably connected in the inner cavity of the drying hopper 1. And one side of the drying hopper 1 has a protruding cavity, and a heating guiding component 4 is slidably connected in the protruding cavity. The heating guiding component 4 includes a guiding cover 401. A drying medium cavity is provided in the guiding cover 401, and a plurality of air outlet nozzles 402 are provided in the drying medium cavity. The air outlet nozzles 402 are connected in the guiding cover 401. By transferring the corresponding material storage component 5 into the guiding cover 401 for independent drying;

[0045] A positioning component 6 for driving the guiding cover 401 to reciprocate is provided in the protruding cavity, and the movement of the guiding cover 401 is used to avoid interfering with the rotational switching of the material storage component 5;

[0046] One side of the heating guiding component 4 is communicated with a heating and blowing component 3, and the heating and blowing component 3 is arranged outside the drying hopper 1.

[0047] Among them, the heating and blowing component 3 includes a blower and a corresponding electric heating source, such as an electric thermocouple, etc. When the heating and blowing component 3 sucks air and enters the pipeline, the electric thermocouple heats the air and then transports it to the inner heating guiding component 4 to heat the corresponding material storage component 5. Heating air is blown into the heating guiding component 4 through the blowing component.

[0048] Please refer to Figures 4 - 5 and Figure 9 , the bottom of the drying hopper 1 has a partition board, and a driving part 7 is arranged on the top of the partition board. And openings are provided at the positions corresponding to the rotation strokes of the material storage component 5 on the top of the partition board. The material storage component 5 is communicated with at least one opening after a single rotation. The top of the driving part 7 is rotatably connected with a driving rod 8, and the outer peripheral side of the driving rod 8 is connected with the corresponding material storage component 5 through a connecting plate;

[0049] The stock storage assembly 5 includes a barrel 501. The top of the barrel 501 has a feed inlet, and the bottom of the barrel 501 has a metering discharge assembly. A plurality of heat exchange grooves are circumferentially formed along the axis on the outer peripheral side of the barrel 501, and a receiving groove 507 is formed at the bottom of the heat exchange groove. A shielding block 502 is arranged in the receiving groove 507. The shielding block 502 is configured to be slidably connected in the heat exchange groove, and the ventilation volume of the barrel 501 is controlled by closing the heat exchange groove with the shielding block 502;

[0050] The top of the shielding block 502 is connected with a filling pad 506. The width and length of the filling pad 506 are greater than those of the shielding block 502. The gap of the receiving groove 507 is closed by the filling pad 506 to improve the closing effect;

[0051] Among them, the barrel 501 is filled with plastic particles to be modified or modified plastic particles according to the process stage;

[0052] Among them, the metering discharge assembly adopts a gate valve driven by electricity, and the discharge amount is controlled by adjusting the opening of the gate. This part belongs to the conventional technology in the field and will not be elaborated;

[0053] Among them, the driving part 7 can be a motor and the corresponding transmission belt or gear set for transmission cooperation. This part is the knowledge in the conventional field and will not be elaborated.

[0054] Specifically: through the designed multiple stock storage assemblies 5, different raw material particles can be added in the multiple barrels 501 according to the modification needs. When the raw material particles are stored in the barrel 501, the barrel 501 in the normal closed state can avoid air intrusion and cause the raw material particles to get damp, which can extend the storage time of the particles in the drying hopper 1. And when a certain barrel 501 is in the state to be dried, the driving rod 8 can be driven to rotate by controlling the driving part 7 to send the damp barrel 501 into the heating and guiding assembly 4, and independent drying treatment can be selectively carried out for the anti - moisture measures that are due or newly added particle materials, improving the drying effect of the plastic particles in the modification process. And there is no hot air exchange between the multiple barrels 501, avoiding the intrusion of the damp water vapor from drying into other barrels 501 and maintaining the independent storage stability of the particles in each barrel 501;

[0055] Sliding holes are formed between the longitudinal multiple heat exchange grooves, and a guide rod 503 is slidably connected in the sliding holes. Both ends of the guide rod 503 are connected with the adjacent shielding blocks 502, and a support ring 505 is connected between the guide rods 503 at the top. The support ring 505 is located at the top of the barrel 501. Pressing parts 403 are connected to both sides of the inner cavity of the guiding cover 401 corresponding to the barrel 501. The front cross - section shape of the pressing part 403 is conical, and the support ring 505 is moved downward by the conical contact on the front side of the pressing part 403;

[0056] A plurality of second springs 504 are connected to the position of the bottom of the support ring 505 corresponding to the guide rod 503. The two ends of the second spring 504 are respectively connected to the corresponding positions of the support ring 505 and one side of the barrel 501.

[0057] Furthermore, through the designed support ring 505 and the pressing member 403, after the barrel 501 to be dried moves to one side of the guiding cover 401, the guiding cover 401 can be sleeved outside the barrel 501 to be dried under the control of the positioning assembly 6. At this time, the front conical part of the pressing member 403 can squeeze the support ring 505, and the support ring 505 can drive the guide rod 503 to move downward when being squeezed. The downward movement of the guide rod 503 can make the shielding block 502 enter the receiving groove 507, thereby opening the heat exchange groove gap. At this time, the air outlet nozzle 402 in the guiding cover 401 can spray heated air to heat the internal particles. Through the cooperated heat exchange groove that can be closed and the pressing trigger of the support ring 505, heat exchange drying after triggering is realized.

[0058] Please refer to Figure 2 and Figures 6 - 8 , the rear side of the guiding cover 401 is connected to the heating and blowing assembly 3 through a pipeline. The front side of the guiding cover 401 has an arc-shaped part, and the air outlet nozzle 402 is connected to the inner side of the arc-shaped part. The positioning assembly 6 includes a control board 601 and a driven gear 602. The driven gear 602 is rotatably connected to the top of the partition board. Rack bars 603 are meshed on both sides of the driven gear 602. One of the rack bars 603 is connected to one side of the control board 601, and the other rack bar 603 is connected to the bottom of the guiding cover 401. The rack bar 603 connected to the bottom of the guiding cover 401 passes through the hole opened on the side wall of the drying hopper 1 and extends outside the drying hopper 1. By pressing the control board 601, the other rack bar 603 and the guiding cover 401 are driven to move to the drying position.

[0059] The front end of the control board 601 has an inclined surface, and an extrusion wedge plate 604 is in contact with one side of the inclined surface of the control board 601. The extrusion wedge plate 604 is connected to the outside of the driving rod 8 through a connecting rod 605. By rotating the driving rod 8, the inclined surface of the extrusion wedge plate 604 squeezes the control board 601 to move outward.

[0060] A sliding rod 606 is connected to one side of the control board 601. A sliding sleeve 608 is sleeved outside the sliding rod 606. The sliding cylinder is connected to the top of the partition board. A third spring 607 is sleeved outside the sliding rod 606. The two ends of the third spring 607 are respectively connected to the corresponding positions of the sliding sleeve 608 and one side of the control board 601.

[0061] A telescopic rod 404 is connected to the rear side of the guiding cover 401. The other end of the telescopic rod 404 is connected to one side inside the protruding cavity of the drying hopper 1. A first spring 405 is sleeved outside the telescopic rod 404. The two ends of the first spring 405 are respectively connected to the guiding cover 401 and one side inside the protruding cavity.

[0062] Among them, a plurality of air outlet nozzles 402 can be arranged in an arc shape on the arc-shaped part of the guiding cover 401, and the cross-air outlet of the plurality of air outlet nozzles 402 can improve the drying contact uniformity.

[0063] Specifically, when the driving part 7 drives the driving rod 8 and the barrel 501 to rotate, the driving rod 8 can synchronously drive the extrusion wedge plate 604 to move through the outer peripheral side connecting rod 605. The movement of the extrusion wedge plate 604 can squeeze the control plate 601 through the front side inclined surface. When the control plate 601 is squeezed, it can drive the driven gear 602 to rotate through the rack 603. The rotation of the driven gear 602 can drive the rack 603 on the other side and the guiding cover 401 to move inward. The guiding cover 401 moving inward can be sleeved on the outside of the barrel 501 at the corresponding position. Thus, it can trigger the positioning of the guiding cover 401 to output dry air while the barrel 501 is screwed into the corresponding position, which is beneficial to avoid interfering with the rotation of the barrel 501 through the retractable guiding cover 401. At the same time, through the guiding cover 401 sleeved on the outside of the barrel 501, a plurality of air outlet nozzles 402 arranged oppositely on the circumferential side can improve the convective heating effect on the materials in the barrel 501;

[0064] A cover body is provided at the top of the drying hopper 1. The top of the cover body has a corresponding feeding pipe. An exhaust pipe 9 is provided at the top of the cover body, and the exhaust pipe 9 is located at the top of the heating and guiding assembly 4 at the corresponding heating and drying position;

[0065] Furthermore, the heated water-containing air can be sucked and discharged through the corresponding exhaust pipe 9 at the top, avoiding the overflow of the water-containing dry air in the drying hopper 1, preventing other barrels 501 from being affected by the humid air and causing the particles to become damp, and prolonging the storage duration.

[0066] Specifically, it includes the following steps:

[0067] An efficient drying method for modified PP plastic particles. Different plastic particles are added to the corresponding storage component 5 according to the process requirements. When the storage component 5 rotates in the drying hopper 1, the rotation of the storage component 5 can adjust the position corresponding to the guiding cover 401. After the storage component 5 to be dried rotates to one side of the guiding cover 401 at the corresponding position, the guiding cover 401 can eject the gas sent by the external heating and air-blowing component 3 after blowing and heating the air, and the raw materials corresponding in the storage component 5 can be dried through the ejected gas.

[0068] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "plurality" means two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "joined" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] As described above, the above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. An efficient drying device for modified PP plastic particles, including a drying hopper (1), characterized in that, A drying hopper (1) is connected to a guiding part (2) at the bottom. The bottom of the guiding part (2) has a discharge port. A plurality of material storage components (5) are rotatably connected in the inner cavity of the drying hopper (1). One side of the drying hopper (1) has a protruding cavity, and a heating guiding component (4) is slidably connected in the protruding cavity. The heating guiding component (4) includes a guiding cover (401). A drying medium cavity is provided in the guiding cover (401), and a plurality of air outlet nozzles (402) are provided in the drying medium cavity. The air outlet nozzles (402) are connected inside the guiding cover (401). By transferring the corresponding material storage component (5) into the guiding cover (401) for independent drying. One side of the heating guiding component (4) is communicated with a heating and blowing component (3). The heating and blowing component (3) is arranged outside the drying hopper (1). A positioning component (6) for driving the guiding cover (401) to reciprocate is provided in the protruding cavity. By the movement of the guiding cover (401), the rotation and switching of the material storage component (5) are avoided from being interfered. The material storage component (5) includes a material cylinder (501). The top of the material cylinder (501) has a feed port, and the bottom of the material cylinder (501) has a quantitative discharging component. A plurality of heat exchange grooves are circumferentially arranged along the axis on the outer peripheral side of the material cylinder (501), and a receiving groove (507) is opened at the bottom of the heat exchange groove. A shielding block (502) is provided in the receiving groove (507). The shielding block (502) is configured to be slidably connected in the heat exchange groove. By closing the heat exchange groove with the shielding block (502), the ventilation volume of the material cylinder (501) is controlled. The top of the shielding block (502) is connected with a filling pad (506). The width and length of the filling pad (506) are greater than the width and length of the shielding block (502). By closing the gap of the receiving groove (507) with the filling pad (506), the closing effect is improved. Sliding holes are opened between a plurality of vertically arranged heat exchange grooves. A guide rod (503) is slidably connected in the sliding holes. Both ends of the guide rod (503) are connected to the adjacent shielding blocks (502). A support ring (505) is connected between the guide rods (503) at the top. The support ring (505) is located at the top of the material cylinder (501). Pressing members (403) are connected to both sides of the guiding cover (401) corresponding to the material cylinder (501) in the inner cavity. The front cross-sectional shape of the pressing member (403) is conical. By the conical contact of the front side of the pressing member (403) with the support ring (505), it moves downward.

2. The high-efficiency drying equipment for modified PP plastic particles according to claim 1, wherein, The bottom of the drying hopper (1) has a partition board, and a driving part (7) is arranged on the top of the partition board. Openings are opened at the positions corresponding to the rotation stroke of the material storage component (5) on the top of the partition board. The material storage component (5) is communicated with at least one opening after a single rotation. The top of the driving part (7) is rotatably connected with a driving rod (8). The outer peripheral side of the driving rod (8) is connected to the corresponding material storage component (5) through a connecting plate.

3. The high-efficiency drying equipment for modified PP plastic particles according to claim 1, characterized in that, A plurality of second springs (504) are connected to the bottom of the support ring (505) corresponding to the position of the guide rod (503). The two ends of the second spring (504) are respectively connected to the corresponding positions of the support ring (505) and one side of the barrel (501). An expansion rod (404) is connected to the rear side of the guiding cover (401). The other end of the expansion rod (404) is connected to one side inside the protruding cavity of the drying hopper (1). A first spring (405) is sleeved outside the expansion rod (404), and the two ends of the first spring (405) are respectively connected to the guiding cover (401) and one side inside the protruding cavity.

4. The high-efficiency drying equipment for modified PP plastic particles according to claim 1, characterized in that, The rear side of the guiding cover (401) is connected to the heating and blowing assembly (3) through a pipeline. The front side of the guiding cover (401) has an arc portion, and the air outlet nozzle (402) is connected to the inner side of the arc portion. The positioning assembly (6) includes a control board (601) and a driven gear (602). The driven gear (602) is rotatably connected to the top of the partition board. Both sides of the driven gear (602) are engaged with a rack (603). One side of the rack (603) is connected to one side of the control board (601), and the other side of the rack (603) is connected to the bottom of the guiding cover (401). The rack (603) connected to the bottom of the guiding cover (401) passes through a hole formed in the side wall of the drying hopper (1) and extends outside the drying hopper (1). By pressing the control board (601), the other side of the rack (603) and the guiding cover (401) are driven to move to the drying position.

5. The high-efficiency drying equipment for modified PP plastic particles according to claim 4, wherein, The front end of the control board (601) has an inclined surface, and an extrusion wedge plate (604) is in contact with one side of the inclined surface of the control board (601). The extrusion wedge plate (604) is connected to the outside of the driving rod (8) through a connecting rod (605). By rotating the driving rod (8), the inclined surface of the extrusion wedge plate (604) is driven to extrude the control board (601) to move outward. One side of the control board (601) is connected to a sliding rod (606). A sliding sleeve (608) is sleeved outside the sliding rod (606). The sliding cylinder is connected to the top of the partition board. A third spring (607) is sleeved outside the sliding rod (606). The two ends of the third spring (607) are respectively connected to the corresponding positions of the sliding sleeve (608) and one side of the control board (601).

6. The high-efficiency drying equipment for modified PP plastic particles according to claim 5, characterized in that, A cover body is provided on the top of the drying hopper (1). The top of the cover body has a corresponding feeding pipeline. An exhaust pipeline (9) is provided on the top of the cover body, and the exhaust pipeline (9) is located at the top of the heating and guiding assembly (4) at the corresponding heating and drying position.

7. An efficient drying method for modified PP plastic particles, applied to the efficient drying equipment for modified PP plastic particles according to any one of claims 1-6, characterized in that, Specifically, it includes the following steps: Add different plastic particles into the corresponding storage component (5) according to the process requirements. When the storage component (5) rotates in the drying hopper (1), the rotation of the storage component (5) can adjust the position corresponding to the guiding cover (401). After the storage component (5) to be dried rotates to one side of the guiding cover (401) at the corresponding position, the guiding cover (401) can spray out the gas sent in after the external heating and blowing assembly (3) blows and heats the air. The raw materials corresponding in the storage component (5) can be dried through the sprayed gas.

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