Pelletizing device based on double-screw extruder and using method thereof

Abstract

The invention discloses a granulation device based on a double-screw extruder and a using method thereof.The granulation device comprises a draining and screening mechanism, the draining and screening mechanism comprises a bottom plate table, the top of the bottom plate table is fixedly connected with a heat-proof box through a support, and a hot melting cutting mechanism is installed on the upper portion of the heat-proof box; the right side of the top of the bottom plate table is fixedly connected with a leakage-proof frame through a support, and the left side of the top of the bottom plate table is fixedly connected with an air cylinder through a support. According to the granulation device based on the double-screw extruder and the use method of the granulation device, the draining and screening mechanism and the hot melting and cutting mechanism are used in a combined mode, and due to the arrangement of the two mechanisms, raw materials can be directly melted and cooled when being conveyed in the long conveying barrel, and the raw materials are pushed out in a semi-solidified state; and then the particles are directly cut into particles by the cutting knife, and the particles can be cooled and screened.

Description

Technical Field

[0001] The present invention relates to the technical field of granulating devices, and particularly to a granulating device based on a twin-screw extruder and a using method thereof. Background Art

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the forming and processing of extruded products.

[0003] Existing twin-screw extruders are usually used for plastic granulation. First, plastic raw materials are poured into the interior of the extruder for mixing and melting, and then extruded for cutting and granulating. Subsequently, the existing twin-screw extruder can meet the granulation requirements, but there are still obvious defects in actual use, such as: The twin-screw extruder usually only has the function of melting and extruding plastic raw materials, and the extruded semi-solid plastic still needs to be pulled and cooled and solidified in a water tank, and then can be cut by a cutting machine. Such a method results in the entire device being lengthened after the twin-screw extruder, the cooling water tank and the cutting machine are assembled, thus taking up too much space, and this method also results in an overly long production line, affecting the granulation efficiency; Therefore, a granulating device based on a twin-screw extruder that can improve granulation efficiency is now designed to solve such defects. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a granulating device based on a twin-screw extruder and a using method thereof, which solves the problems of large volume and slow granulation efficiency of the existing granulating device of the twin-screw extruder.

[0005] To achieve the above purposes, the present invention is realized through the following technical solutions: A granulating device based on a twin-screw extruder includes a water drainage and screening mechanism. The water drainage and screening mechanism includes a bottom plate platform. The top of the bottom plate platform is fixedly connected with a heat-proof box through a bracket. A hot melt cutting mechanism is installed on the upper part of the heat-proof box; The right side of the top of the bottom plate platform is fixedly connected with a leakage-proof frame through a bracket. The left side of the top of the bottom plate platform is fixedly connected with a cylinder through a bracket. The front end of the cylinder is fixedly connected with a linkage long frame. The right end of the linkage long frame is fixedly connected with an aggregate frame, and the aggregate frame is located inside the leakage-proof frame.

[0006] Preferably, a first guide slide bar is fixedly connected between the front part and the rear part of the inner cavity of the heat insulation box. A guide slide cylinder is slidably mounted on the surface of the first guide slide bar. First springs are sleeved on the front part and the rear part of the surface of the first guide slide bar. The top of the guide slide cylinder is fixedly connected with an inclined guide frame. Drainage mesh grooves and screening mesh grooves are respectively formed on both sides of the bottom of the inner cavity of the inclined guide frame. The top of the heat insulation box is fixedly connected with a ventilation branch pipe through an opening, and a plurality of ventilation branch pipes are provided. A suction fan is fixedly connected to the inner side of the ventilation branch pipe.

[0007] Preferably, the hot melt cutting mechanism includes a feeding long cylinder, and the feeding long cylinder is located above the heat insulation box. A hot melt box and a cooling box are respectively fixedly connected to both sides of the surface of the feeding long cylinder. The top end of the ventilation branch pipe is fixedly connected to the bottom of the hot melt box. Electric heating rods are fixedly connected between the top and the bottom of the inner cavity of the hot melt box, and a plurality of electric heating rods are provided and are located in the front part and the rear part of the inner cavity of the hot melt box. A water pump is fixedly connected to the top of the cooling box through a fixing plate. Water pipes are fixedly connected to both sides of the water pump, and the ends of the water pipes far away from the water pump penetrate through the cooling box and extend to the inner side of the cooling box. The bottom of the cooling box is fixedly connected with a water spraying frame through an opening, and a plurality of water spraying frames are provided.

[0008] Preferably, a multi-sided inner ring is rotatably connected to the right side of the inner cavity of the feeding long cylinder through an opening. A linkage box is fixedly connected to the right side of the feeding long cylinder. A rotating rod is fixedly connected to the right side of the multi-sided inner ring. The right end of the rotating rod sequentially penetrates through the feeding long cylinder and the linkage box and extends to the right side of the linkage box. A screw blade is fixedly connected to the surface of the rotating rod and is located inside the feeding long cylinder. Extrusion hole grooves are respectively formed in the front part and the rear part of the left side of the feeding long cylinder.

[0009] Preferably, first gear cylinders which are meshed with each other are fixedly connected to the surfaces of the two rotating rods, and the first gear cylinders are located inside the linkage box. A convex rotating wheel is fixedly connected to the surface of the rear rotating rod and is located on the right side of the first gear cylinder. A motor is fixedly connected to the right side of the linkage box through a bracket, and the output shaft of the motor is fixedly connected to the right end of the front rotating rod through a coupling. A feeding frame is fixedly connected to the right side of the top of the feeding long cylinder through an opening. Inclined sealing seats are respectively fixedly connected to the front side and the rear side of the top of the feeding frame.

[0010] Preferably, a second guide slide bar is fixedly connected to the top of the linkage box through a bracket. A sliding sleeve frame is slidably mounted on the surface of the second guide slide bar. A storage hopper which is matched with the inclined sealing seat is fixedly connected to the left side of the sliding sleeve frame, and a plurality of storage hoppers are provided. A second spring is sleeved on the front side of the surface of the second guide slide bar. A vertical push plate which is matched with the convex rotating wheel is fixedly connected to the bottom of the sliding sleeve frame. The front storage hopper is fixedly connected to the inclined guide frame through a bracket.

[0011] Preferably, a pulling rod is slidably installed on the left side of the top of the feeding long tube. A pressure rotating plate is fixedly connected to the surface of the pulling rod. A third spring is sleeved on the left side of the surface of the pulling rod. A rectangular pressing groove penetrating to the rear is formed on the surface of the pulling rod. Stop blocks are fixedly connected to the right sides of the top and bottom of the pulling rod. Third guide rods are fixedly connected to the upper and lower parts on the right side of the pressure rotating plate. A transverse pressing plate is slidably installed on the surface of the third guide rod. Arc-shaped multi-angle rods matched with the inner multi-angle ring are rotatably connected to the front and rear parts on the right side of the transverse pressing plate through bearing parts. A cutting knife matched with the extrusion hole groove is installed on the surface of the arc-shaped multi-angle rod. A fourth spring is sleeved on the surface of the third guide rod.

[0012] Preferably, a second gear cylinder is fixedly connected to the left end of the pressure rotating plate. A bent frame is fixedly connected to the left side of the top of the linkage long frame. An arc-shaped flat plate matched with the rectangular pressing groove is fixedly connected to the right end of the bent frame. A retraction frame is fixedly connected to the left end of the bent frame. An arc-shaped tooth plate matched with the second gear cylinder is slidably installed inside the retraction frame. A fifth spring is fixedly connected between the arc-shaped tooth plate and the retraction frame. A material flushing inclined frame is fixedly connected to the left side of the bottom of the cooling box.

[0013] The present invention also discloses a using method of a granulating device based on a twin-screw extruder, which specifically includes the following steps: S1. Before use, first start the water pump to inject water into the cooling box through the water delivery pipe. After the water in the cooling box is full, open the water spraying frame valve. Then the water spraying frame sprays the water in the cooling box onto the material flushing inclined frame. At this time, the water in the cooling box is in a flowing state. Then turn on the electric heating rod to heat the inside of the hot melting box. Then place the required raw materials in the two storage hoppers. After the preparation work is completed, go to step S2; S2. After the preparatory work is completed, start the motor to drive the rotating rod to rotate. Since the two first gear cylinders mesh with each other, the two auger blades rotate synchronously. While the rotating rod rotates, the cutting knife rotates along the extrusion hole groove by docking the internal multi-angle ring with the arc-headed multi-angle rod. When the convex-shaped runner rotates with the rotating rod, it will continuously push the vertical push plate, causing the two storage hoppers to reciprocate under the guidance of the sliding sleeve frame and the elastic force of the second spring. When the bottoms of the two storage hoppers move to the top of the feeding frame in sequence, the raw material batches inside the storage hoppers enter the inner side of the long conveying cylinder. The raw materials entering the inner part of the long conveying cylinder are pushed to move leftward by the auger blades. When the raw materials pass through the hot melting box, they are melted into a flowing state. When passing through the cooling box, they are cooled by the water inside into a semi-solidified state. Until the raw materials move to the left side, they are extruded from the extrusion hole groove. The extruded raw materials are continuously cut into granules by the rotating cutting knife and fall on the top of the material-pushing inclined frame. At this time, the water sprayed by the water spraying frame drives the granules to flow downward on the top of the material-pushing inclined frame and is cooled. When the granules fall on the top of the inclined surface guide frame, due to the reciprocating movement of the storage hopper, the inclined surface guide frame will also vibrate back and forth under the action of the guide sliding cylinder and the first spring. The vibrating inclined surface guide frame will drive the granules to move right downward. When the granules fall on the top of the water draining mesh groove, they are drained of water. At the same time, the exhaust fan extracts the high-temperature hot air inside the hot melting box and sprays it downward to dry the granules. When the granules move to the screening mesh groove, the appropriate granules fall from the bottom of the screening mesh groove, while the inappropriate large granules continue to move rightward and fall inside the aggregate frame; S3. After the inside of the aggregate frame is full, start the air cylinder to push the linkage long frame forward. The forward movement of the linkage long frame will drive the aggregate frame to be pulled out from the inside of the leak-proof frame to pour out the unqualified granules for reprocessing. At the same time, the linkage long frame will also use the curved frame to pull the arc-shaped flat plate and the retraction frame to move forward synchronously. First, the arc-shaped flat plate is pulled out from the inside of the rectangular pressing groove. At this time, the pulling-back rotating rod loses its limit and moves leftward under the elastic force of the third spring, separating the arc-headed multi-angle rod from the internal multi-angle ring. At this time, the cutting knife stops rotating. At the same time, the second gear cylinder is located directly in front of the arc-shaped tooth plate. Subsequently, the arc-shaped tooth plate moves forward and meshes with the second gear cylinder, driving the entire fourth spring to rotate 180 degrees. At this time, the upper cutting knife is located below, and the just-cut cutting knife is located above. When the air cylinder returns to its original position, the aggregate frame is re-located inside the leak-proof frame. When the arc-shaped tooth plate moves backward, it retracts into the retraction frame through the arc shape on its surface and will not mesh with the second gear cylinder. After the arc-shaped tooth plate is separated from the second gear cylinder, the arc-shaped flat plate is inserted into the rectangular pressing groove and pushes the entire fourth spring to move rightward, docking the lower arc-headed multi-angle rod with the internal multi-angle ring. Subsequently, the cutting knife is driven to continue rotating for granule cutting, and at the same time, the top cutting knife is cleaned and maintained.

[0014] The present invention provides a granulating device based on a twin-screw extruder and its usage method. Compared with the existing technology, it has the following beneficial effects: (1) The granulation device based on the twin-screw extruder and the method of using the same, by combining the drainage screening mechanism and the hot melt cutting mechanism, the arrangement of the two mechanisms can allow the raw materials to be directly melted and cooled when being conveyed inside the feeding tube, so that they are pushed out in a semi-solidified state and then directly cut into granules by the cutting knife. The granules can also be cooled and screened, and after the screening is completed, the unqualified materials can be pushed out for reprocessing. While pushing the materials, the cutting knife can also be rotated and replaced, which can ensure the cutting quality and efficiency while facilitating the cleaning and maintenance of the staff.

[0015] (2) The granulation device based on the twin-screw extruder and its use method, by installing a hot melt box and a cooling box on both sides of the surface of the feeding long cylinder respectively, so that the raw materials can be directly hot-melted and semi-cooled before being cut into particles, and the cut particles fall on the top of the punching inclined frame, and the flowing water after heat exchange inside the water spray rack is sprayed out to make the particles flow downward, which can not only perform secondary cooling on the particles, but also dissipate the heat of the water. It does not need to be connected to a traditional water tank and a cutting machine, which shortens the overall length and process of the equipment, effectively improves the granulation efficiency, and satisfies current use.

[0016] (3) The granulation device based on the twin-screw extruder and its use method are characterized by installing two storage hoppers on the surface of the second guide slide rod by using a sliding sleeve frame, and using them in combination with a convex wheel and an inclined guide frame. The arrangement of these structures can utilize the extrusion of the convex wheel and the vertical push plate to push the two storage hoppers to reciprocate and mix the materials quantitatively, thereby ensuring the balance of the raw materials inside the feeding cylinder. At the same time, when the storage hopper reciprocates, it will also drive the inclined guide frame to vibrate back and forth, which can not only drain the particles, but also screen them. At the same time, the exhaust fan is used to extract the hot air inside the hot melt box to dry the particles during screening, which is convenient for subsequent direct use, thereby improving the overall practicality and functionality of the equipment.

[0017] (4) The granulation device based on the twin-screw extruder and the method of using the same are respectively provided with a collection frame, a curved flat plate and a retracting frame on the surface of the linkage long frame, and are used in combination with a cutting knife and a second gear cylinder. The arrangement of these structures can, while the cylinder pushes the collection frame to discharge unqualified materials, separate the curved polygonal rod from the inner polygonal ring, and drive the entire fourth spring to rotate and switch the positions of the upper and lower cutting knives. After the cylinder is reset, the lower curved polygonal rod is inserted into the inner polygonal ring by connecting the curved flat plate and the rectangular pressure groove, thereby driving the clean cutting knife to continue rotating and cutting, while the upper cutting knife is convenient for the staff to clean and maintain, thereby indirectly improving the cutting quality and the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1Schematic diagram of the present invention; Figure 2 Rear view of the water drainage and screening mechanism and the hot melt cutting mechanism of the present invention; Figure 3 For the present invention Figure 2 Partial enlarged view at A in; Figure 4 Schematic diagram of the structure of the water drainage and screening mechanism of the present invention; Figure 5 Bottom view of the internal structure of the heat protection box of the present invention; Figure 6 Schematic diagram of the structure of the leak-proof frame, cylinder and linkage long frame of the present invention; Figure 7 Schematic diagram of the structure of the hot melt cutting mechanism of the present invention; Figure 8 Schematic diagram of the structure of the storage hopper, second spring and vertical push plate of the present invention; Figure 9 Cross-sectional view of the structure of the hot melt box and the cooling box of the present invention; Figure 10 Schematic diagram of the structure of the horizontal abutting plate, cutting knife and second gear cylinder of the present invention; Figure 11 Schematic diagram of the structure of the rectangular pressure groove, blocking block and third guide slide rod of the present invention; Figure 12 Cross-sectional view of the structure of the retraction frame of the present invention; Figure 13 Schematic diagram of the structure of the first gear cylinder, motor and convex runner of the present invention.

[0019] In the figure: 1. Drainage and screening mechanism; 2. Hot melt cutting mechanism; 101. Bottom plate table; 102. Heat protection box; 103. First guide slide bar; 104. Guide slide cylinder; 105. First spring; 106. Inclined guide frame; 107. Drainage mesh tank; 108. Screening mesh tank; 109. Ventilation branch pipe; 110. Exhaust fan; 111. Leakage prevention frame; 112. Cylinder; 113. Linkage long frame; 114. Aggregate frame; 201. Feeding long cylinder; 202. Hot melt box; 203. Cooling box; 204. Electric heating rod; 205. Water pump; 206. Water delivery pipe; 207. Spraying rack; 208. Linkage box; 209. Rotating rod; 210. Screw blade; 211. Extrusion hole slot; 212. Inner multi-angle ring; 213. First gear cylinder; 214. Motor; 215. Convex runner; 216. Second guide slide bar; 217. Feeding frame; 218. Inclined sealing seat; 219. Slide sleeve frame; 220. Storage hopper; 221. Second spring; 222. Vertical push plate; 223. Pull-back rotating rod; 224. Pressure rotating plate; 225. Third spring; 226. Rectangular pressing groove; 227. Blocking position block; 228. Third guide slide bar; 229. Transverse resisting plate; 230. Fourth spring; 231. Arc head multi-angle rod; 232. Cutting knife; 233. Second gear cylinder; 234. Bent frame; 235. Arc surface flat plate; 236. Retraction frame; 237. Arc-shaped tooth plate; 238. Fifth spring; 239. Material flushing inclined frame. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figure 1-13 , the present invention provides a technical solution: a granulating device based on a twin-screw extruder, including a drainage and screening mechanism 1. The drainage and screening mechanism 1 includes a bottom plate table 101. The top of the bottom plate table 101 is fixedly connected with a heat protection box 102 through a bracket, and a hot melt cutting mechanism 2 is installed on the upper part of the heat protection box 102.

[0022] Please refer to Figure 4 , Figure 5 and Figure 6, which shows the overall structure of the drainage and screening mechanism 1. On the right side of the top of the bottom plate table 101, a leak-proof frame 111 is fixedly connected through a bracket. On the left side of the top of the bottom plate table 101, a cylinder 112 is fixedly connected through a bracket. The front end of the cylinder 112 is fixedly connected with a linkage long frame 113. The right end of the linkage long frame 113 is fixedly connected with an aggregate frame 114, and the aggregate frame 114 is located inside the leak-proof frame 111. A first guide slide bar 103 is fixedly connected between the front and rear parts of the inner cavity of the heat-proof box 102. A guide slide cylinder 104 is slidably installed on the surface of the first guide slide bar 103. First springs 105 are sleeved on both the front and rear parts of the surface of the first guide slide bar 103. The top of the guide slide cylinder 104 is fixedly connected with an inclined surface guide frame 106. Drainage mesh grooves 107 and screening mesh grooves 108 are respectively opened on both sides of the bottom of the inner cavity of the inclined surface guide frame 106. The holes of the drainage mesh grooves 107 are smaller than those of the screening mesh grooves 108. The top of the heat-proof box 102 is fixedly connected with a ventilation branch pipe 109 through an opening, and a number of ventilation branch pipes 109 are provided. A suction fan 110 is fixedly connected inside the ventilation branch pipe 109. The suction fan 110 is a high-temperature resistant fan and can be applied to high-temperature environments.

[0023] Please refer to Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13, which shows the overall structure of the hot-melt cutting mechanism 2. The hot-melt cutting mechanism 2 includes a feeding long cylinder 201, and the feeding long cylinder 201 is located above the heat-proof box 102. On both sides of the surface of the feeding long cylinder 201, a hot-melt box 202 and a cooling box 203 are respectively fixedly connected. The top end of the ventilation branch pipe 109 is fixedly connected to the bottom of the hot-melt box 202. Between the top and the bottom of the inner cavity of the hot-melt box 202, electric heating rods 204 are fixedly connected, and a number of electric heating rods 204 are provided and are located in the front and the rear of the inner cavity of the hot-melt box 202. The top of the cooling box 203 is fixedly connected with a water pump 205 through a fixing plate. The water pump 205 continuously supplies water to the cooling box 203 to ensure the fluidity of water. Both sides of the water delivery pipe 206 are fixedly connected with the water delivery pipe 206, and the end of the water delivery pipe 206 far away from the water pump 205 penetrates through the cooling box 203 and extends to the inside of the cooling box 203. The bottom of the cooling box 203 is fixedly connected with a water spraying frame 207 through an opening. The water spraying frame 207 continuously drains water, and a number of water spraying frames 207 are provided. On the right side of the inner cavity of the feeding long cylinder 201, an inner multi-angle ring 212 is rotationally connected through an opening. On the right side of the feeding long cylinder 201, a linkage box 208 is fixedly connected. On the right side of the inner multi-angle ring 212, a rotating rod 209 is fixedly connected. The right end of the rotating rod 209 sequentially penetrates through the feeding long cylinder 201 and the linkage box 208 and extends to the right side of the linkage box 208. On the surface of the rotating rod 209 and inside the feeding long cylinder 201, a screw blade 210 is fixedly connected. Extrusion hole grooves 211 are respectively opened in the front and the rear of the left side of the feeding long cylinder 201. On the surfaces of both rotating rods 209, first gear cylinders 213 that mesh with each other are fixedly connected, and the first gear cylinders 213 are located inside the linkage box 208. On the surface of the rear rotating rod 209 and on the right side of the first gear cylinder 213, a convex-shaped runner 215 is fixedly connected. On the right side of the linkage box 208, a motor 214 is fixedly connected through a bracket. The motor 214 is a servo motor, and the output shaft of the motor 214 is fixedly connected to the right end of the front rotating rod 209 through a coupling. On the right side of the top of the feeding long cylinder 201, a feeding frame 217 is fixedly connected through an opening. On the front side and the rear side of the top of the feeding frame 217, inclined surface sealing seats 218 are respectively fixedly connected. On the top of the linkage box 208, a second guide slide rod 216 is fixedly connected through a bracket. A sliding sleeve frame 219 is slidably mounted on the surface of the second guide slide rod 216. On the left side of the sliding sleeve frame 219, a storage hopper 220 that is matched with the inclined surface sealing seat 218 is fixedly connected, and a number of storage hoppers 220 are provided. Different storage hoppers 220 can hold different mixed raw materials. A second spring 221 is sleeved on the front side of the surface of the second guide slide rod 216. On the bottom of the sliding sleeve frame 219, a vertical push plate 222 that is matched with the convex-shaped runner 215 is fixedly connected. The front storage hopper 220 is fixedly connected with the inclined surface guide frame 106 through a bracket. On the left side of the top of the feeding long cylinder 201, a pulling-back rotating rod 223 is slidably mounted. On the surface of the pulling-back rotating rod 223, a pressure rotating plate 224 is fixedly connected.A third spring 225 is sleeved on the left side of the surface of the pulling-back rotating rod 223. A rectangular pressing groove 226 penetrating to the rear is formed on the surface of the pulling-back rotating rod 223. Stop blocks 227 are fixedly connected to the right sides of the top and bottom of the pulling-back rotating rod 223. Third guiding sliders 228 are fixedly connected to the upper and lower parts of the right side of the pressure rotating plate 224. A transverse abutting plate 229 is slidably mounted on the surface of the third guiding slider 228. Arc-shaped multi-angle rods 231 that are used in cooperation with the inner multi-angle ring 212 are rotatably connected to the front and rear parts of the right side of the transverse abutting plate 229 through bearing members. Since the motor 214 drives the inner multi-angle ring 212 to rotate slowly and one end of the arc-shaped multi-angle rod 231 is arc-shaped, docking can be facilitated. A cutting knife 232 that is used in cooperation with the extrusion hole groove 211 is mounted on the surface of the arc-shaped multi-angle rod 231. A fourth spring 230 is sleeved on the surface of the third guiding slider 228. The left end of the pressure rotating plate 224 is fixedly connected to a second gear cylinder 233. A bent frame 234 is fixedly connected to the left side of the top of the linkage long frame 113. An arc-shaped flat plate 235 that is used in cooperation with the rectangular pressing groove 226 is fixedly connected to the right end of the bent frame 234. A retraction frame 236 is fixedly connected to the left end of the bent frame 234. An arc-shaped tooth plate 237 that is used in cooperation with the second gear cylinder 233 is slidably mounted inside the retraction frame 236. A fifth spring 238 is fixedly connected between the arc-shaped tooth plate 237 and the retraction frame 236. A material-flushing inclined frame 239 is fixedly connected to the left side of the bottom of the cooling box 203.,

[0024] The present invention also discloses a usage method of a granulating device based on a twin-screw extruder, which specifically includes the following steps: S1. Before use, first start the water pump 205 to inject water into the inside of the cooling box 203 by using the water delivery pipe 206. After the water in the cooling box 203 is filled, open the valve of the water spraying frame 207. Subsequently, the water spraying frame 207 sprays the water inside the cooling box 203 towards the material-flushing inclined frame 239. At this time, the water inside the cooling box 203 is in a flowing state. Then, turn on the electric heating rod 204 to heat the inside of the hot melting box 202. Subsequently, place the required raw materials in the two storage hoppers 220. After the preparation work is completed, turn to step S2; S2. After the preparatory work is completed, start the motor 214 to drive the rotating rod 209 to rotate. Since the two first gear cylinders 213 are meshed with each other, the two auger blades 210 rotate synchronously. While the rotating rod 209 rotates, the cutting knife 232 rotates along the extrusion hole groove 211 by using the docking of the internal multi-angle ring 212 and the arc-head multi-angle rod 231. When the convex-shaped runner 215 rotates together with the rotating rod 209, it will continuously push the vertical push plate 222, so that the two storage hoppers 220 reciprocate under the guidance of the sliding sleeve frame 219 and the elastic force of the second spring 221. When the bottoms of the two storage hoppers 220 move to the top of the feeding frame 217 in sequence, the raw material batches inside the storage hoppers 220 enter the inside of the feeding long cylinder 201. The raw materials entering the inside of the feeding long cylinder 201 are pushed to the left by the auger blades 210. When the raw materials pass through the hot melting box 202, they are melted into a flowing state. When passing through the cooling box 203, they are cooled by the water inside into a semi-solidified state. Until the raw materials move to the left side, they are extruded from the extrusion hole groove 211. The extruded raw materials are continuously cut into particles by the rotating cutting knife 232 and fall on the top of the material flushing inclined frame 239. At this time, the water sprayed by the water spraying frame 207 drives the particles to flow downward on the top of the material flushing inclined frame 239 and is cooled. When the particles fall on the top of the inclined plane guide frame 106, since the reciprocating movement of the storage hopper 220 will also drive the inclined plane guide frame 106 to vibrate back and forth under the action of the guide sliding cylinder 104 and the first spring 105, and the vibrating inclined plane guide frame 106 will drive the particles to move right downward. When the particles fall on the top of the water draining mesh groove 107, they are drained of water. At the same time, the exhaust fan 110 extracts the high-temperature hot air inside the hot melting box 202 and sprays it downward to dry the particles. When the particles move to the screening mesh groove 108, the appropriate particles fall from the bottom of the screening mesh groove 108, while the inappropriate large particles continue to move rightward and fall inside the aggregate frame 114; S3. After the inside of the aggregate frame 114 is full, start the cylinder 112 to push the linkage long frame 113 forward. The forward movement of the linkage long frame 113 will drive the aggregate frame 114 to be pulled out from the inside of the leak-proof frame 111 to pour out the unqualified particles for reprocessing. At the same time, the linkage long frame 113 will also use the curved frame 234 to pull the arc-shaped flat plate 235 and the retraction frame 236 to move forward synchronously. First, the arc-shaped flat plate 235 is pulled out from the inside of the rectangular pressing groove 226. At this time, the pulling-back rotating rod 223 loses its limit and moves left under the elastic force of the third spring 225, so that the arc-shaped multi-angle rod 231 is separated from the inner multi-angle ring 212. At this time, the cutting knife 232 stops rotating. At the same time, the second gear cylinder 233 is located directly in front of the arc-shaped tooth plate 237. Subsequently, the arc-shaped tooth plate 237 moves forward to engage with the second gear cylinder 233 and drives the entire fourth spring 230 to rotate 180 degrees. At this time, the upper cutting knife 232 is located below, and the just-cut cutting knife 232 is located above. When the cylinder 112 resets, the aggregate frame 114 is re-located inside the leak-proof frame 111. When the arc-shaped tooth plate 237 moves backward, it retracts into the retraction frame 236 through the arc shape on its surface and will not engage with the second gear cylinder 233. After the arc-shaped tooth plate 237 is separated from the second gear cylinder 233, the arc-shaped flat plate 235 is inserted into the inside of the rectangular pressing groove 226 to push the entire fourth spring 230 to move rightward, so that the lower arc-shaped multi-angle rod 231 is docked with the inner multi-angle ring 212. Subsequently, the cutting knife 232 is driven to continue rotating for particle cutting, and at the same time, the top cutting knife 232 is cleaned and maintained.

[0025] At the same time, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

Claims

1. A granulation device based on a twin-screw extruder, comprising a drainage and screening mechanism (1), characterized in that: The drainage screening mechanism (1) comprises a base plate (101), the top of the base plate (101) is fixedly connected to a heat-proof box (102) via a bracket, and a hot-melt cutting mechanism (2) is installed on the upper part of the heat-proof box (102); The right side of the top of the base plate (101) is fixedly connected to a leak-proof frame (111) via a bracket, the left side of the top of the base plate (101) is fixedly connected to a cylinder (112) via a bracket, the front end of the cylinder (112) is fixedly connected to a linkage long frame (113), the right end of the linkage long frame (113) is fixedly connected to a material collection frame (114), and the material collection frame (114) is located on the inner side of the leak-proof frame (111).

2. A granulation device based on a twin-screw extruder according to claim 1, characterized in that: A first guide slide bar (103) is fixedly connected between the front and rear parts of the inner cavity of the heat-proof box (102); a guide slide tube (104) is slidably mounted on the surface of the first guide slide bar (103); a first spring (105) is sleeved on the front and rear parts of the surface of the first guide slide bar (103); a sloped guide frame (106) is fixedly connected to the top of the guide slide tube (104); a drainage mesh groove (107) and a screening mesh groove (108) are respectively provided on both sides of the bottom of the inner cavity of the sloped guide frame (106); a ventilation branch pipe (109) is fixedly connected to the top of the heat-proof box (102) through an opening, and a plurality of ventilation branch pipes (109) are provided; an exhaust fan (110) is fixedly connected to the inner side of the ventilation branch pipe (109).

3. A granulation device based on a twin-screw extruder according to claim 2, characterized in that: The hot melt cutting mechanism (2) comprises a material feeding tube (201), and the material feeding tube (201) is located at the upper part of the heat protection box (102), and the two sides of the surface of the material feeding tube (201) are respectively fixedly connected to the hot melt box (202) and the cooling box (203), the top of the ventilation branch pipe (109) is fixedly connected to the bottom of the hot melt box (202), and an electric heating rod (204) is fixedly connected between the top and the bottom of the inner cavity of the hot melt box (202), and the electric heating rod (204) is provided with a plurality of The front and rear parts of the inner cavity of the hot melt box (202), the top of the cooling box (203) is fixedly connected to a water pump (205) via a fixing plate, both sides of the water pipe (206) are fixedly connected to water pipes (206), and one end of the water pipe (206) away from the water pump (205) passes through the cooling box (203) and extends to the inside of the cooling box (203), the bottom of the cooling box (203) is fixedly connected to a water spray rack (207) via an opening, and a plurality of water spray racks (207) are provided.

4. A granulation device based on a twin-screw extruder according to claim 3, characterized in that: The right side of the inner cavity of the feeding tube (201) is rotatably connected to an inner polygonal ring (212) via an opening, the right side of the feeding tube (201) is fixedly connected to a linkage box (208), the right side of the inner polygonal ring (212) is fixedly connected to a rotating rod (209), the right end of the rotating rod (209) passes through the feeding tube (201) and the linkage box (208) in sequence and extends to the right side of the linkage box (208), the surface of the rotating rod (209) and the inner side of the feeding tube (201) are fixedly connected to an auger blade (210), and the front and rear parts of the left side of the feeding tube (201) are both provided with extrusion holes (211).

5. A granulation device based on a twin-screw extruder according to claim 4, characterized in that: The surfaces of the two rotating rods (209) are fixedly connected to mutually meshing first gear cylinders (213), and the first gear cylinder (213) is located on the inner side of the linkage box (208). A convex rotating wheel (215) is fixedly connected to the surface of the rear rotating rod (209) and located on the right side of the first gear cylinder (213). The right side of the linkage box (208) is fixedly connected to a motor (214) via a bracket, and the output shaft of the motor (214) is fixedly connected to the right end of the front rotating rod (209) via a coupling. The right side of the top of the feeding long cylinder (201) is fixedly connected to a feeding frame (217) via an opening, and the front and rear sides of the top of the feeding frame (217) are fixedly connected to an inclined sealing seat (218).

6. A granulation device based on a twin-screw extruder according to claim 5, characterized in that: The top of the linkage box (208) is fixedly connected to a second guide slide rod (216) via a bracket, a sliding sleeve frame (219) is slidably mounted on the surface of the second guide slide rod (216), a storage hopper (220) used in conjunction with the inclined sealing seat (218) is fixedly connected to the left side of the sliding sleeve frame (219), and a plurality of storage hoppers (220) are provided, a second spring (221) is sleeved on the front side of the surface of the second guide slide rod (216), a vertical push plate (222) used in conjunction with the convex rotating wheel (215) is fixedly connected to the bottom of the sliding sleeve frame (219), and the front portion of the storage hopper (220) is fixedly connected to the inclined guide frame (106) via a bracket.

7. A granulation device based on a twin-screw extruder according to claim 6, characterized in that: A pull-back rotating rod (223) is slidably mounted on the left side of the top of the feeding tube (201); a pressure rotating plate (224) is fixedly connected to the surface of the pull-back rotating rod (223); a third spring (225) is sleeved on the left side of the surface of the pull-back rotating rod (223); a rectangular pressure groove (226) is opened on the surface of the pull-back rotating rod (223) extending to the rear; a blocking block (227) is fixedly connected to the right side of the top and bottom of the pull-back rotating rod (223); and the upper and lower parts of the right side of the pressure rotating plate (224) are fixedly connected to the pressure rotating plate (224). A third guide slide rod (228) is fixedly connected to the surface of the third guide slide rod (228), a transverse abutment plate (229) is slidably mounted on the surface of the transverse abutment plate (229), the front and rear portions of the right side of the transverse abutment plate (229) are rotatably connected to an arc-head polygonal rod (231) used in conjunction with the inner polygonal ring (212) through a bearing member, a cutting knife (232) used in conjunction with the extrusion hole groove (211) is mounted on the surface of the arc-head polygonal rod (231), and a fourth spring (230) is sleeved on the surface of the third guide slide rod (228).

8. A granulation device based on a twin-screw extruder according to claim 7, characterized in that: The left end of the pressure rotating plate (224) is fixedly connected to the second gear cylinder (233); the left side of the top of the linkage long frame (113) is fixedly connected to a curved frame (234); the right end of the curved frame (234) is fixedly connected to a curved flat plate (235) used in conjunction with the rectangular pressure groove (226); the left end of the curved frame (234) is fixedly connected to a retraction frame (236); an arc-shaped tooth plate (237) used in conjunction with the second gear cylinder (233) is slidably mounted on the inner side of the retraction frame (236); a fifth spring (238) is fixedly connected between the arc-shaped tooth plate (237) and the retraction frame (236); and the left side of the bottom of the cooling box (203) is fixedly connected to a punching inclined frame (239).

9. A method for using a granulation device based on a twin-screw extruder, characterized in that: The specific steps include: S1. Before use, first start the water pump (205) and use the water pipe (206) to fill the interior of the cooling box (203) with water. After the interior of the cooling box (203) is filled with water, open the valve of the water spray rack (207). Then, the water spray rack (207) sprays the water in the cooling box (203) toward the material punching inclined frame (239). At this time, the water in the cooling box (203) is in a flowing state. Then, turn on the electric heating rod (204) to heat the interior of the hot melt box (202). Then, place the required raw materials in the two storage hoppers (220). After the preparation work is completed, go to step S2. S2. After the preparation work is completed, the motor (214) is started to drive the rotating rod (209) to rotate. Since the two first gear cylinders (213) are meshed with each other, the two auger blades (210) rotate synchronously. While the rotating rod (209) rotates, the inner polygonal ring (212) and the arc-shaped polygonal rod (231) are connected to each other to make the cutting knife (232) rotate close to the extrusion hole groove (211). When the convex rotating wheel (215) rotates together with the rotating rod (209), it will continuously push the vertical push plate (222) to make the two The storage hopper (220) moves back and forth under the guidance of the sliding sleeve frame (219) and the elastic force of the second spring (221). When the bottoms of the two storage hoppers (220) move to the top of the feeding frame (217) in sequence, the raw materials in the storage hoppers (220) enter the inner side of the feeding tube (201) in batches. The raw materials entering the feeding tube (201) are pushed to the left by the auger blades (210). When the raw materials pass through the hot melt box (202), they are melted into a fluid state. When they pass through the cooling box (203), they are cooled by the internal The water is cooled to a semi-solidified state until the raw material moves to the left and is extruded from the extrusion hole (211). The extruded raw material is continuously cut into particles by the rotating cutting knife (232) and falls on the top of the material-punching inclined frame (239). At this time, the water sprayed by the water spraying frame (207) drives the particles to flow downward at the top of the material-punching inclined frame (239) and cools them. After the particles fall on the top of the inclined guide frame (106), the reciprocating movement of the storage hopper (220) also drives the inclined guide frame (106) on the guide slide cylinder (104). ) and the first spring (105), the guide frame (106) vibrates back and forth, and the vibrating inclined surface guide frame (106) drives the particles to move to the lower right, and after the particles fall on the top of the draining mesh slot (107), the particles are drained, and at the same time, the exhaust fan (110) extracts the high-temperature hot air inside the hot melt box (202) and sprays it downward to dry the particles, and when the particles move to the screening mesh slot (108), suitable particles fall from the bottom of the screening mesh slot (108), while unsuitable large particles continue to move to the right and fall on the inner side of the aggregate frame (114); S3. After the inside of the aggregate frame (114) is full, the cylinder (112) is started to push the linkage long frame (113) forward. The forward movement of the linkage long frame (113) drives the aggregate frame (114) to be drawn out from the inside of the leak-proof frame (111) to pour out the unqualified particles for reprocessing. At the same time, the linkage long frame (113) also uses the curved frame (234) to pull the curved surface plate (235) and the retraction frame (236) forward synchronously. First, The curved plate (235) is pulled out from the inner side of the rectangular pressing groove (226). At this time, the pull-back rotating rod (223) loses its limit and moves leftward under the elastic force of the third spring (225), so that the arc-shaped polygonal rod (231) is separated from the inner polygonal ring (212). At this time, the cutting knife (232) no longer rotates, and the second gear cylinder (233) is located in front of the arc-shaped tooth plate (237). Then the arc-shaped tooth plate (237) moves forward to align with the second gear cylinder. (233) meshes and drives the entire fourth spring (230) to rotate 180 degrees. At this time, the upper cutting knife (232) is located at the lower part, while the cutting knife (232) that has just cut is located at the upper part. When the cylinder (112) is reset, the collecting frame (114) is located inside the leak-proof frame (111) again, and the arc-shaped tooth plate (237) retracts to the inside of the retraction frame (236) through the arc shape of the surface when moving backward, and will not mesh with the second gear cylinder (233). After the arc-shaped tooth plate (237) is separated from the second gear cylinder (233), the arc-shaped flat plate (235) is inserted into the inside of the rectangular pressing groove (226) to push the fourth spring (230) to move right as a whole, so that the arc-shaped polygonal rod (231) at the lower part is connected with the inner polygonal ring (212). Then, the cutting knife (232) is driven to continue to rotate to cut particles, and the cutting knife (232) at the top is cleaned and maintained at the same time.

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