A waste recycling device for plastic pellet manufacturing

Abstract

The present invention relates to the technical field of plastic recycling devices, and more specifically to a waste recycling device for plastic granule manufacturing, which includes a housing and an inner cylinder rotatably arranged therein. A drying space for placing materials is formed between the housing and the inner cylinder. An inlet is provided at the top of the housing and is communicated with the drying space. An air inlet pipe communicated with the hollow interior of the inner cylinder is arranged on the inner cylinder. A plurality of groups of stirring blocks are arranged in a vertical circular array on the inner cylinder, and stirring plates in a partial spiral shape extending into the drying space are arranged on the stirring blocks. The waste recycling device for plastic granule manufacturing provided by the invention utilizes the rotation of the stirring plates to stir and lift the materials in a ring shape between the inner cylinder and the housing, thereby achieving the effects of loosening and heating and drying the materials. Instead of using the traditional method of centrifugally throwing out liquids, the stirring plates serve as heat-conducting and stirring components to quickly dry the materials.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic recycling devices, and more specifically to a waste material recycling device for plastic pellet manufacturing. Background Art

[0002] Plastics are high molecular compounds polymerized from monomers through addition polymerization or condensation polymerization, commonly known as plastics or resins. They can freely change their composition and form, and are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. In the plastic recycling process, the cleaning and classification of waste plastics are crucial.

[0003] According to the patent with the publication number CN113524512B, the publication (announcement) date: February 01, 2022, a plastic pellet recycling system disclosed in the field of plastic recycling. During recycling, first, waste plastics are crushed, then cleaned. The plastic pellets with water after cleaning are put into the inner drying cylinder and rotated. On the one hand, when the inner drying cylinder rotates, under the action of centrifugal force, the water adhered to it is thrown into the outer cladding and contacts the air overflow packing, causing the air overflow packing to generate gas and reverse osmose into the inner drying cylinder, thereby loosening the plastic pellets to a certain extent and accelerating the overflow of the hot and humid air generated inside due to heating. On the other hand, when the inner drying cylinder rotates, the water capsules collide with each other and break, and the water inside overflows and diffuses with the rotation, significantly increasing the gas generation speed and gas generation amount in the outer cladding and accelerating drying. Compared with the prior art, the recycling efficiency is greatly improved.

[0004] In the prior art including the above patent, wet material particles are poured into the inner drying cylinder, the inner drying cylinder rotates and heats, and the water is thrown out by centrifugal force. However, the granular materials in the inner drying cylinder are generally roughly cylindrical, and the middle part of the cylindrical material particles is located on the rotation axis of the inner drying cylinder. The material at this part is affected by less rotational centrifugal force, which is likely to cause the materials in the middle of the drying cylinder to adhere and aggregate due to liquid tension, resulting in low drying efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a waste material recycling device for plastic pellet manufacturing to solve the above problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A waste recycling device for manufacturing plastic particles, including a housing and an inner cylinder rotatably arranged therein. A drying space for placing materials is formed between the housing and the inner cylinder. An inlet is opened at the top of the housing and is connected to the drying space. An air inlet pipe connected to the hollow interior of the inner cylinder is provided on the inner cylinder. A plurality of stirring blocks arranged vertically in a circumferential array are provided on the inner cylinder. A stirring plate extending into the drying space and partially spiral is provided on the stirring block. Spray holes arranged vertically downward are opened on the stirring plate, and the spray holes are connected to the interior of the inner cylinder.

[0007] Preferably, a pushing block is provided on the inner cylinder. A pushing plate portion extending vertically into the drying hole member is provided on the pushing block. The pushing block is located vertically below the stirring block.

[0008] Preferably, a shielding cover coaxially arranged inside the housing is further included. A shielding portion located vertically above the drying space is provided on the shielding cover. A plurality of threaded grooves are arranged in a circumferential array on the shielding cover, and the threaded grooves have the same spiral direction as the stirring plate.

[0009] Preferably, a blocking portion and a flexible blocking member are provided on the pushing block. An air inlet hole connected to the spray hole is opened on the stirring block. The pushing block is slidably arranged along the circumferential direction of the inner cylinder, and the pushing block is driven to slide by the material to be pushed so that the blocking portion and the flexible blocking member gradually extend into the stirring block, and the blocking portion and the flexible blocking member move to separate the air inlet hole and the spray hole.

[0010] Preferably, a secondary drain pipe is opened at the bottom of the housing. The shielding cover is axially slidably arranged inside the housing. The shielding cover is driven to axially slide so that the shielding cover separates the inlet from the drying space. The stirring block is slidably arranged along the radial direction of the inner cylinder. The pushing block is driven to slide to the middle of its sliding stroke to drive the stirring block to slide out of the inner cylinder, and the end of the stirring plate is embedded in the threaded groove.

[0011] Preferably, a material separating plate slidably arranged along the radial direction of the inner cylinder is further included. The material separating plate is located between the stirring block and the pushing block. The pushing block is driven to slide to the middle of its sliding stroke to make the material separating plate slide into the drying space.

[0012] Preferably, air holes connected to the interior of the inner cylinder and with openings vertically downward at the ends are opened on the material separating plate. The pushing block drives the material separating plate to slide so that the air holes move into the drying space and face the pushing plate portion.

[0013] Preferably, a driving gear rotatably arranged inside the inner cylinder is further included. Thrust roller portions are symmetrically arranged on the driving gear. The driving gear is coupled with the driving tooth portion of the pushing block. The pushing block slides to drive the driving gear to rotate so that the thrust roller portions push the stirring block to slide.

[0014] Preferably, a sliding block and a transmission gear are arranged inside the inner cylinder. The sliding block is arranged to slide parallel to the material separation plate, and a second rack is arranged on the sliding block. The transmission gear is coupled with the second rack, and the ring gear portion arranged on the transmission gear is coupled with the first rack portion arranged on the material separation plate. The driving gear is driven to rotate so as to push the sliding block to slide by the pushing roller portion.

[0015] Preferably, a stabilizing portion is arranged inside the inner cylinder along the outer edge of the rotation path of the pushing roller portion.

[0016] In the above technical solution, a waste material recycling device for manufacturing plastic particles provided by the present invention has the following beneficial effects: The stirring plate rotates to stir and lift the materials in the annular shape between the inner cylinder and the outer shell, thereby loosening and heating and drying the materials. Instead of using the traditional method of centrifugally throwing out the liquid, the stirring plate serves as a heat conducting member and a stirring member to quickly dry the materials. Secondly, vertical drying exhaust is adopted to further improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the overall structural schematic diagram provided by the embodiment of the present invention;

[0019] Figure 2 It is the overall vertical structural sectional view provided by the embodiment of the present invention;

[0020] Figure 3 It is the overall horizontal structural sectional view provided by the embodiment of the present invention;

[0021] Figure 4 It is the exploded structural schematic diagram of the covering shell, inner cylinder, stirring block and pushing block provided by the embodiment of the present invention;

[0022] Figure 5 It is the structural schematic diagram of the pushing block, stirring block and driving gear provided by the embodiment of the present invention;

[0023] Figure 6 It is the exploded structural schematic diagram of the pushing block, stirring block, driving gear and material separation plate provided by the embodiment of the present invention;

[0024] Figure 7 It is provided by the embodiment of the present invention Figure 2 The partial enlarged schematic diagram at A;

[0025] Figure 8 For the embodiment of the present invention Figure 2 Schematic diagram of partial enlargement at position B in

[0026] Figure 9 For the embodiment of the present invention Figure 3 Schematic diagram of partial enlargement at position C in

[0027] Explanation of reference numerals:

[0028] 1. Outer shell; 11. Feed inlet; 12. Discharge pipe; 13. Secondary drain pipe; 131. Filter plate; 2. Inner cylinder; 21. Air inlet pipe; 22. Stabilizing part; 3. Stirring block; 31. Stirring plate; 311. Spray hole; 312. Air inlet hole; 4. Pushing block; 41. Pushing plate part; 42. Sealing part; 43. Flexible sealing member; 44. Driving tooth part; 5. Cover; 51. Thread groove; 52. Activity empty groove; 53. Contact ring; 6. Partition plate; 61. Air hole; 62. First rack part; 7. Driving gear; 71. Pushing roller part; 81. Sliding block; 811. Second rack; 82. Transmission gear; 821. Ring tooth part; 91. Driving motor; 92. Elastic member. Detailed implementation manners

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present disclosure with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0030] As Figure 1-9 shown, a waste recycling device for manufacturing plastic particles includes an outer shell 1 and an inner cylinder 2 rotatably disposed therein. A drying space for placing materials is formed between the outer shell 1 and the inner cylinder 2. The top of the outer shell 1 is provided with a feed inlet 11 communicating with the drying space. The inner cylinder 2 is provided with an air inlet pipe 21 communicating with the hollow interior of the inner cylinder 2. The inner cylinder 2 is circumferentially and arrayed with a plurality of groups of stirring blocks 3 arranged vertically. The stirring blocks 3 are provided with stirring plates 31 extending into the drying space and being partially spiral. The stirring plates 31 are provided with spray holes 311 arranged vertically downward, and the spray holes 311 communicate with the interior of the inner cylinder 2.

[0031] Specifically, as Figure 2As shown in the figure, an inner cylinder 2 is rotatably arranged inside the outer shell 1. The inner cylinder 2 has a hollow inner cavity, and the air inlet pipe 21 is communicated with the inner cavity of the inner cylinder 2. A driving motor 91 is also arranged on the outer shell 1 to drive the inner cylinder 2 to rotate. An annular drying space is formed between the outer shell 1 and the inner cylinder 2. When drying operation is required, plastic particles are poured into the drying space through the feeding port 11. Subsequently, the inner cylinder 2 is driven to rotate to drive the stirring block 3 to rotate circumferentially. At this time, the stirring plate 31 on the stirring block 3 drives the plastic particles in the drying space to move, and hot air is conveyed into the inner cylinder 2 through the air inlet pipe 21. The hot air fills into the drying space along the ejection holes 311 to heat and dry the agitated materials. Furthermore, the stirring plate 31 rotates to stir the annular materials between the inner cylinder 2 and the outer shell 1. Instead of the traditional method of centrifugally throwing out the liquid, the stirring plate 31 serves as a heat-conducting part and a stirring part to accelerate the drying of the materials. Secondly, vertical exhaust is adopted to further improve the drying efficiency. Moreover, since the stirring plate 31 is partially spiral, when the stirring plate 31 rotates, its lower end moves forward to extrude and lift the material particles along the upper surface of the stirring plate 31, thereby vertically tumbling and stirring the materials to further avoid the problem of low drying efficiency caused by the adhesion of material particles to each other.

[0032] In the above technical solution, the stirring plate 31 rotates to stir and lift the annular materials between the inner cylinder 2 and the outer shell 1, thereby loosening and heating and drying the materials. Instead of the traditional method of centrifugally throwing out the liquid, the stirring plate 31 serves as a heat-conducting part and a stirring part to quickly dry the materials. Secondly, vertical drying exhaust is adopted to further improve the drying efficiency.

[0033] As another embodiment provided by the present invention, a pushing block 4 is arranged on the inner cylinder 2. A pushing plate portion 41 extending vertically into the drying hole member is arranged on the pushing block 4. The pushing block 4 is located vertically below the stirring block 3.

[0034] Specifically, as Figure 2 shown, a pushing block 4 is arranged on the inner cylinder 2. The pushing plate portion 41 on the pushing block 4 extends into the drying space and is vertical. When the material particles with humidity are poured into the drying space, due to gravity, the moisture in the materials will move downward, and thus the lower part of the material particles has a higher humidity. When the inner cylinder 2 rotates to perform drying operation on the material particles in the drying space, the pushing plate portion 41 rotates with the inner cylinder 2 to push and move the material particles with higher humidity at the lower part, thereby avoiding the problem of low drying efficiency caused by the adhesion of the material particles with higher humidity at the bottom.

[0035] Furthermore, a discharge pipe 12 communicating with the drying space is also provided at the bottom of the outer shell 1. When the materials in the drying space are dried, the inner cylinder 2 can be rotated to drive the pushing plate part 41 to rotate circumferentially. The rotation of the pushing plate part 41 drives the materials at the bottom to move and discharge to the discharge pipe 12, improving the discharging efficiency.

[0036] As another embodiment provided by the present invention, it further includes a shielding cover 5 coaxially arranged inside the outer shell 1. A shielding part located vertically above the drying space is provided on the shielding cover 5. A plurality of threaded grooves 51 are arranged in a circumferential array on the shielding cover 5, and the spiral directions of the threaded grooves 51 are the same as that of the stirring plate 31.

[0037] Specifically, the shielding cover 5 is arranged inside the outer shell 1, and the shielding part of the shielding cover 5 covers vertically above the drying space, thereby avoiding the problem of material leakage caused by the material particles in the drying space flying out of the outer shell 1 from the feeding port 11 during the drying operation and improving the operation safety. Secondly, the shielding cover 5 is provided with threaded grooves 51, and the spiral directions of the threaded grooves 51 are the same as that of the stirring plate 31. When the inner cylinder 2 rotates to drive the stirring plate 31 to carry the materials to rotate and move, the material particles close to the inner wall of the shielding cover 5 are driven by the stirring plate 31 to move horizontally and hit the threaded grooves 51, so that the material particles are impacted to accelerate the separation between the material particles and moisture, thereby improving the drying efficiency. And the material particles close to the stirring plate 31 are lifted and loosened by the movement of the stirring plate 31, and further, the materials can also form a circulating movement between the outer wall of the inner cylinder 2 and the inner wall of the shielding cover 5, thereby improving the drying uniformity of the material particles.

[0038] As another embodiment provided by the present invention, a blocking part 42 and a flexible blocking member 43 are provided on the pushing block 4. An air inlet hole 312 communicating with the ejection hole 311 is formed on the stirring block 3. The pushing block 4 is slidably arranged along the circumferential direction of the inner cylinder 2, and the pushing block 4 is pushed and slid by the driven materials so that the blocking part 42 and the flexible blocking member 43 gradually extend into the stirring block 3, and the blocking part 42 and the flexible blocking member 43 move to separate the air inlet hole 312 and the ejection hole 311.

[0039] Specifically, as Figure 6 shown, a blocking part 42 and a flexible blocking member 43 are provided on the pushing block 4. The pushing block 4 is slidably arranged circumferentially on the inner cylinder 2, and an elastic member 92 is arranged inside the inner cylinder 2 to drive the pushing block 4 to reset to the first end of the sliding path. During the process of the inner cylinder 2 rotating to dry the materials, the bonding resistances of the material particles with different humidities are different. The greater the humidity, the greater the bonding resistance between the material particles. Therefore, when the inner cylinder 2 rotates, the materials with different humidities will exert different magnitudes of blocking forces on the pushing plate part 41.

[0040] When the material particles are just poured into the drying space, the humidity of the material particles is the highest. At this time, the inner cylinder 2 rotates to drive the pushing plate part 41 to rotate circumferentially. Since the material particles will exert a large resistance on the pushing plate part 41, the pushing plate part 41 overcomes the elastic potential energy of the elastic member 92 and slides to the second end of the sliding stroke of the pushing block 4. The pushing plate part 41 slides to the second end of the sliding stroke, causing the blocking part 42 and the flexible blocking member 43 to move closer to the air inlet hole 312, thereby reducing the cross-sectional area of the communication position between the air inlet hole 312 and the ejection hole 311, and then increasing the ejection speed of the hot air at the ejection hole 311, facilitating the high-speed hot air to be filled into the drying space to wash and loosen the material with a relatively high humidity, increasing the gaps between the material particles to improve the drying speed.

[0041] When the material particles are gradually dried and the resistance of the material particles to the pushing plate part 41 decreases, the pushing plate part 41 is driven by the elastic member 92 to gradually reset to the first end of the sliding stroke of the pushing block 4. At this time, the blocking part 42 and the flexible blocking member 43 move away from the air inlet hole 312 following the movement of the pushing plate part 41, thereby increasing the flow area of the connected part of the air inlet hole 312, and then reducing the hot air ejection speed at the ejection hole 311, increasing the hot air ejection volume at the ejection hole 311, facilitating the hot air to flow vertically upward to heat the stirring plate 31 and the material particles, thereby further improving the drying efficiency of the material particles with a relatively low humidity. The pushing plate part 41 and the elastic member 92 are used to automatically adjust the ejection speed and ejection volume at the ejection hole 311 according to the humidity of the material particles. When the material particles are relatively wet, the ejection speed is increased, and the gas flow rate is relatively large to impact downward to disperse the material particles, increasing the gaps between the materials, facilitating the separation between the material particles and the liquid, and improving the drying efficiency; when the material particles are slightly dried, the air flow rate at the ejection hole 311 is increased, which can also improve the drying efficiency, and the gas is easy to rise to heat and evaporate the liquid for drying.

[0042] Among them, the elastic member 92 can be replaced by other elastic objects well known to those skilled in the art, such as springs, elastic plates, air bags, etc.

[0043] As another embodiment provided by the present invention, a secondary drain pipe 13 is opened at the bottom of the outer shell 1, the shielding cover 5 is axially slidably arranged in the outer shell 1, the shielding cover 5 is driven to axially slide so that the shielding cover 5 separates the feeding port 11 from the drying space, the stirring block 3 is slidably arranged along the radial direction of the inner cylinder 2, the pushing block 4 is driven to slide to the middle of its sliding stroke to drive the stirring block 3 to slide out of the inner cylinder 2, and the end of the stirring plate 31 is embedded in the thread groove 51.

[0044] Specifically, as Figure 2As shown, the secondary water leakage pipe 13 is located at the bottom of the shell 1, and a filter plate 131 is arranged in the secondary water leakage pipe 13 to prevent material particles from leaking out of the outer side of the shell 1, and a resistance ring 53 is rotatably arranged on the shielding part of the shielding cover 5. When the material particles are poured into the drying space for drying operation, the shielding cover 5 can be first caused to slide downward axially so that the resistance ring 53 is in contact with the inner cylinder 2, thereby separating the drying space from the feed inlet 11. At this time, if the inner cylinder 2 rotates and the air inlet pipe 21 blows hot air into the inner cylinder 2, the material particles will exert a large resistance on the push plate part 41, and the push plate part 41 Slide to the second end of the sliding stroke of the pusher block 4, so that the blocking portion 42 and the flexible blocking member 43 move to increase the gas flow rate out of the ejection hole 311, and the hot air will be filled into the drying space along the ejection hole 311 to increase the air pressure in the drying space. Due to the blocking of the feed inlet 11, the air pressure generated by the hot air at this time will drive the material particles and moisture to be squeezed downward and move from the secondary water leakage pipe 13, and then the moisture on the material particles is directly discharged from the secondary water leakage pipe 13 under the action of gravity and air pressure, thereby completing the pre-drying of the material with high humidity and improving the drying efficiency of the material. Secondly, the existence of the pusher plate portion 41, the blocking portion 42 and the flexible blocking member 43 can increase the speed of the airflow ejecting downward to increase the impact force on the moisture on the material particles, and improve the separation and drying efficiency.

[0045] When the humidity of the material particles decreases, the resistance of the material particles to the push plate portion 41 decreases, and the push plate portion 41 is driven by the elastic member 92 to gradually return to the first end of the sliding stroke of the push block 4. When the push block 4 is driven to slide to the middle of its sliding stroke, the push block 4 drives the stirring block 3 to slide out of the inner cylinder 2, and the end of the stirring plate 31 is embedded in the thread groove 51. At this time, the stirring plate 31 follows the rotation of the inner cylinder 2 and moves in the thread groove 51, so that the stirring plate 31 is used to push the shielding cover 5 to gradually slide upward axially so that The drying space is connected with the feed port 11 until the shielding cover 5 slides vertically upward to the stirring plate 31 and enters the movable slot 52 provided on the shielding cover 5, and then the shielding cover 5 stops sliding. At this time, the humidity of the material is slightly lower, and the hot air from the air inlet pipe 21 is ejected along the ejection hole 311 to enter the drying space. When the hot air contacts the material particles, the moisture on the material particles will be evaporated and dried, and then the hot air will carry the water vapor and flow upward and be discharged from the feed port 11, thereby completing the drying of the material particles with lower humidity. The pusher block 4 and the stirring block 3 are used to realize the switching of different drying methods for materials with different humidity. When the humidity of the material particles is high, the moisture is directly blown out vertically downward by gravity and airflow. When the humidity of the material decreases and the temperature rises, the hot air heating and drying method is used for drying, thereby greatly improving the drying efficiency.

[0046] Among them, the pusher block 4 can adopt a sensor combined with a motor gear set to drive the sliding of the stirring block 3, or a sensor combined with a telescopic cylinder to drive the sliding of the stirring block 3, or other driving methods well-known to those skilled in the art can be used for replacement.

[0047] As another embodiment provided by the present invention, it further includes a material separation plate 6 slidably arranged radially along the inner cylinder 2. The material separation plate 6 is located between the stirring block 3 and the pusher block 4. The pusher block 4 is driven to slide to the middle of its sliding stroke to enable the material separation plate 6 to slide into the drying space.

[0048] Specifically, as Figure 2 shown, the material separation plate 6 is slidably arranged radially along the inner cylinder 2. When the material in the drying space gradually dries and the humidity decreases, the resistance exerted by the material particles on the pusher plate part 41 decreases. Therefore, the pusher block 4 is driven to slide to the middle of the sliding stroke of the pusher block 4 to drive the material separation plate 6 to slide into the drying space. At this time, due to gravity, the humidity of the lower material particles is greater than that of the upper material particles. The protruding material separation plate 6 first separates the material particles with a large humidity difference between the upper and lower layers, thus avoiding the problem that the material particles with a small humidity at the top are re-wetted by the cooling of water vapor, and improving the overall drying efficiency. Secondly, when the inner cylinder 2 rotates, the material separation plate 6 and the pusher plate part 41 push the lower material particles to perform a horizontal circular rotation. Since the material particles contact the thread groove 51 of the shielding cover 5, the material particles close to the inner wall of the shielding cover 5 will sink due to the blockage of the thread groove 51, so that the material particles with a large humidity at the bottom are located below the material separation plate 6 to form a self-circulating tumbling, thereby improving the drying efficiency of the wet material particles at the bottom.

[0049] As still another embodiment provided by the present invention, the material separation plate 6 is provided with air holes 61 that communicate with the inside of the inner cylinder 2 and have openings at the ends facing vertically downward. The pusher block 4 drives the material separation plate 6 to slide so that the air holes 61 move into the drying space and face the pusher plate part 41.

[0050] Specifically, as Figure 8 shown, the left end of the air hole 61 of the material separation plate 6 communicates with the inside of the inner cylinder 2, and the right end opening of the air hole 61 is arranged facing vertically downward. When the pusher block 4 drives the material separation plate 6 to slide into the drying space to separate the upper and lower material particles, the air holes 61 move into the drying space and face the pusher plate part 41 to face the lower material side. At this time, the hot air is ejected along the air holes 61 to accelerate the formation of the movement cycle of the lower material particles, and the air pressure generated by the air holes 61 can blow the moisture in the lower material particles downward along the secondary drain pipe 13, and the material separation plate 6 is also blown by the hot air at the air holes 61 to form a heat conducting plate, thereby further improving the drying efficiency of the lower material particles.

[0051] As another embodiment provided by the present invention, it further includes a driving gear 7 rotatably arranged in the inner cylinder 2. Thrust roller parts 71 are symmetrically arranged on the driving gear 7. The driving gear 7 is coupled with the driving tooth part 44 of the pushing block 4. The pushing block 4 slides to drive the driving gear 7 to rotate so that the thrust roller parts 71 push against the stirring block 3 to slide.

[0052] Specifically, as Figure 5 shown, the driving gear 7 is rotatably arranged in the inner cylinder 2. The driving gear 7 is coupled with the driving tooth part 44 of the pushing block 4. When the inner cylinder 2 rotates to drive the pushing block 4 to slide by the material particles, the pushing block 4 drives the driving gear 7 to rotate through the driving tooth part 44, and the driving gear 7 rotates to make the thrust roller parts 71 rotate to push against the stirring block 3 to slide out of the outer side of the inner cylinder 2. And when the pushing block 4 is at the middle of the sliding stroke, the driving gear 7 rotates to make the thrust roller parts 71 push against the stirring block 3 to extend out to the maximum distance from the outer side of the inner cylinder 2. By using the driving gear 7 and the thrust roller parts 71, the driving of the pushing block 4 on the stirring block 3 is realized, without the need to additionally increase a driving source, improving the operation stability of the device.

[0053] Further, a stabilizing part 22 is arranged in the inner cylinder 2 at the outer edge of the rotation path of the thrust roller parts 71. When the driving gear 7 is driven to rotate, the thrust roller parts 71 abut against the edge of the stabilizing part 22 to rotate circumferentially, thereby improving the movement stability of the thrust roller parts 71 and the driving gear 7.

[0054] As still another embodiment provided by the present invention, a sliding block 81 and a transmission gear 82 are arranged in the inner cylinder 2. The sliding block 81 is arranged to slide in parallel with the partition plate 6, and a second rack 811 is arranged on the sliding block 81. The transmission gear 82 is coupled with the second rack 811. The ring tooth part 821 arranged on the transmission gear 82 is coupled with the first rack part 62 arranged on the partition plate 6. The driving gear 7 is driven to rotate to make the thrust roller parts 71 push against the sliding block 81 to slide.

[0055] Specifically, as Figure 6 shown, the transmission gear 82 is coupled with the second rack 811 of the sliding block 81, and the ring tooth part 821 of the transmission gear 82 is coupled with the first rack part 62 of the partition plate 6. When the driving gear 7 rotates, the thrust roller parts 71 rotate to push against the sliding block 81 to slide. The sliding block 81 drives the transmission gear 82 to rotate and drives the partition plate 6 to slide into the drying space, using the sliding block 81 and the transmission gear 82 to improve the sliding stability and the extending distance of the partition plate 6.

[0056] Working principle: When the material particles are poured into the drying space for drying operation, the shielding cover 5 can be first axially slid downward to make the abutment ring 53 abut against the inner cylinder 2, thereby separating the drying space from the feed inlet 11. At this time, if the inner cylinder 2 rotates and the air inlet pipe 21 blows hot air into the inner cylinder 2, the material particles will exert a greater resistance on the push plate portion 41, and the push plate portion 41 slides to the second end of the sliding stroke of the push block 4, so the blocking portion 42 and the flexible blocking member 43 move to increase the gas flow rate out of the ejection hole 311, and the hot air will be filled into the drying space along the ejection hole 311 to increase the air pressure in the drying space. Due to the blocking of the feed inlet 11, the air pressure generated by the hot air will drive the material particles and moisture to squeeze downward and move from the secondary water leakage pipe 13, so that the moisture on the material particles is directly discharged from the secondary water leakage pipe 13 under the action of gravity and air pressure, thereby completing the pre-dehumidification of the material with high humidity;

[0057] When the humidity of the material particles decreases, the resistance of the material particles to the push plate portion 41 decreases, and the push plate portion 41 is driven by the elastic member 92 to gradually return to the first end of the sliding stroke of the push block 4. When the push block 4 is driven to slide to the middle of its sliding stroke, the push block 4 drives the stirring block 3 to slide out of the inner cylinder 2, and the end of the stirring plate 31 is embedded in the thread groove 51. At this time, the stirring plate 31 follows the rotation of the inner cylinder 2 and moves in the thread groove 51, so that the stirring plate 31 is used to push the shielding cover 5 to gradually slide upward axially so that The drying space is connected with the feed port 11 until the shielding cover 5 slides vertically upward to the stirring plate 31 and enters the movable slot 52 provided on the shielding cover 5, and then the shielding cover 5 stops sliding. At this time, the humidity of the material is slightly lower, and the hot air from the air inlet pipe 21 is ejected along the ejection hole 311 to enter the drying space. When the hot air comes into contact with the material particles, the moisture on the material particles is evaporated and dried, and the hot air carries the water vapor and flows upward and is discharged from the feed port 11, thereby completing the drying of the material particles with lower humidity.

[0058] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste recycling device for plastic pellet manufacturing, characterized in that It includes a housing (1) and an inner cylinder (2) rotatably arranged therein. A drying space for placing materials is formed between the housing (1) and the inner cylinder (2). An inlet (11) communicating with the drying space is provided at the top of the housing (1). An air inlet pipe (21) communicating with the hollow interior of the inner cylinder (2) is provided on the inner cylinder (2). A plurality of stirring blocks (3) are arranged in a vertical multi-group pattern in a circumferential array on the inner cylinder (2). A stirring plate (31) in a partial spiral shape extending into the drying space is provided on the stirring block (3). Spray holes (311) arranged vertically downward are formed on the stirring plate (31). The spray holes (311) communicate with the interior of the inner cylinder (2). A pushing block (4) is provided on the inner cylinder (2). A pushing plate portion (41) extending vertically into the drying hole part is provided on the pushing block (4). The pushing block (4) is located vertically below the stirring block (3). It further includes a shielding cover (5) coaxially arranged inside the housing (1). A shielding portion located vertically above the drying space is provided on the shielding cover (5). A plurality of threaded grooves (51) are arranged in a circumferential array on the shielding cover (5). The threaded grooves (51) have the same spiral direction as the stirring plate (31). A blocking portion (42) and a flexible blocking member (43) are provided on the pushing block (4). An air inlet hole (312) communicating with the spray hole (311) is formed on the stirring block (3). The pushing block (4) is slidably arranged along the circumferential direction of the inner cylinder (2). The pushing block (4) is driven to slide by the pushing of the material so that the blocking portion (42) and the flexible blocking member (43) gradually extend into the stirring block (3), and the blocking portion (42) and the flexible blocking member (43) move to separate the air inlet hole (312) and the spray hole (311).

2. The waste recycling device for manufacturing plastic particles according to claim 1, characterized in that, A secondary drain pipe (13) is provided at the bottom of the housing (1). The shielding cover (5) is axially slidably arranged inside the housing (1). The shielding cover (5) is driven to axially slide so that the shielding cover (5) separates the inlet (11) from the drying space. The stirring block (3) is slidably arranged along the radial direction of the inner cylinder (2). The pushing block (4) is driven to slide to the middle of its sliding stroke to drive the stirring block (3) to slide out of the inner cylinder (2), and the end of the stirring plate (31) is embedded in the threaded groove (51).

3. The waste recycling device for manufacturing plastic pellets according to claim 2, characterized in that, It further includes a partition plate (6) slidably arranged along the radial direction of the inner cylinder (2). The partition plate (6) is located between the stirring block (3) and the pushing block (4). The pushing block (4) is driven to slide to the middle of its sliding stroke to make the partition plate (6) slide into the drying space.

4. The waste recycling device for manufacturing plastic particles according to claim 3, characterized in that, Air holes (61) communicating with the interior of the inner cylinder (2) and having downwardly open ends are formed on the partition plate (6). The pushing block (4) drives the partition plate (6) to slide so that the air holes (61) move into the drying space and face the pushing plate portion (41).

5. The waste recycling device for manufacturing plastic particles according to claim 3, wherein It further includes a driving gear (7) rotatably arranged inside the inner cylinder (2), symmetrically arranged thrust roller parts (71) are provided on the driving gear (7), the driving gear (7) is coupled with the driving tooth part (44) of the pushing block (4), and the pushing block (4) slides to drive the driving gear (7) to rotate so that the thrust roller parts (71) push the stirring block (3) to slide.

6. The waste recycling device for plastic pellet manufacturing according to claim 5, wherein, A sliding block (81) and a transmission gear (82) are arranged inside the inner cylinder (2), the sliding block (81) is arranged to slide parallel to the partition plate (6), and a second rack (811) is provided on the sliding block (81), the transmission gear (82) is coupled with the second rack (811), the ring tooth part (821) provided on the transmission gear (82) is coupled to the first rack part (62) provided on the partition plate (6), and the driving gear (7) is driven to rotate so that the thrust roller parts (71) push the sliding block (81) to slide.

7. The waste recycling device for manufacturing plastic particles according to claim 5, wherein, A stabilizing part (22) located on the outer edge of the rotation path of the thrust roller parts (71) is arranged inside the inner cylinder (2).

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