A granulation device based on a twin-screw extruder and a method of using the same

Abstract

The present invention discloses a granulation device based on a twin-screw extruder and a method for using the same, comprising a drainage and screening mechanism, wherein the drainage and screening mechanism comprises a bottom plate platform, the top of the bottom plate platform is fixedly connected to a heat-proof box via 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 to a leak-proof frame via a bracket, and the left side of the top of the bottom plate platform is fixedly connected to a cylinder via a bracket. The present invention relates to the technical field of granulation devices. The granulation device based on a twin-screw extruder and a method for using the same, by combining the drainage and screening mechanism and the hot-melt cutting mechanism, the arrangement of these two mechanisms can allow the raw materials to be directly melted and cooled when being conveyed inside the feeding cylinder, so that they are pushed out in a semi-solidified state and then directly cut into granules by a cutting knife, and the granules can also be cooled and screened.

Description

Technical Field

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

[0002] The twin-screw extruder is developed based on 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 molding processing of extruded products.

[0003] Existing twin-screw extruders are usually used for plastic granulation. The plastic raw materials are first poured into the extruder for mixing and melting, and then extruded and cut into granules. Subsequently, the existing twin-screw extruder can meet the granulation needs, but it still has obvious defects in actual use, such as:

[0004] The twin-screw extruder usually only has the function of melting and extruding the plastic raw materials, and the extruded semi-solidified plastic needs to be pulled in a water tank to cool and solidify before it can be cut by a cutting machine. This method causes the entire equipment to be lengthened after the twin-screw extruder, cooling water tank and cutting machine are assembled, which takes up too much space. This method also makes the production line too long, affecting the efficiency of granulation;

[0005] Therefore, a granulating device based on a twin-screw extruder is now designed to improve granulating efficiency to solve this type of defect. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a granulation device based on a twin-screw extruder and a method of using the same, which solves the problem that the granulation device of the existing twin-screw extruder is large in size and has low granulation efficiency.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a granulation device based on a twin-screw extruder, including a drainage and screening mechanism, the drainage and screening mechanism including a bottom plate, the top of the bottom plate is fixedly connected to a heat-proof box through a bracket, and a hot melt cutting mechanism is installed on the upper part of the heat-proof box;

[0008] The right side of the top of the base platform is fixedly connected to a leak-proof frame through a bracket, the left side of the top of the base platform is fixedly connected to a cylinder through a bracket, the front end of the cylinder is fixedly connected to a linkage long frame, the right end of the linkage long frame is fixedly connected to a collection frame, and the collection frame is located on the inner side of the leak-proof frame.

[0009] Preferably, a first guide slide rod is fixedly connected between the front and rear parts of the inner cavity of the heat-proof box, a guide slide cylinder is slidably installed on the surface of the first guide slide rod, the front and rear parts of the surface of the first guide slide rod are both sleeved with a first spring, the top of the guide slide cylinder is fixedly connected to an inclined guide frame, a drainage mesh groove and a screening mesh groove are respectively provided on both sides of the bottom of the inner cavity of the inclined guide frame, the top of the heat-proof box is fixedly connected to a ventilation branch pipe through an opening, and a plurality of ventilation branch pipes are provided, and an exhaust fan is fixedly connected to the inner side of the ventilation branch pipe.

[0010] Preferably, the hot melt cutting mechanism includes a feed cylinder, and the feed cylinder is located at the upper part of the heat-proof box, and the two sides of the surface of the feed cylinder are fixedly connected with a hot melt box and a cooling box respectively, and the top of the ventilation branch pipe is fixedly connected to the bottom of the hot melt box, and an electric heating rod is fixedly connected between the top and bottom of the inner cavity of the hot melt box, and there are several electric heating rods and located at the front and rear of the inner cavity of the hot melt box, the top of the cooling box is fixedly connected to a water pump through a fixed plate, and both sides of the water pump are fixedly connected with water pipes, and the end of the water pipe away from the water pump passes through the cooling box and extends to the inner side of the cooling box, and the bottom of the cooling box is fixedly connected to a water spray rack through an opening, and there are several water spray racks.

[0011] Preferably, the right side of the inner cavity of the feeding cylinder is rotatably connected to an inner polygonal ring through an opening, the right side of the feeding cylinder is fixedly connected to a linkage box, the right side of the inner polygonal ring is fixedly connected to a rotating rod, the right end of the rotating rod passes through the feeding cylinder and the linkage box in sequence and extends to the right side of the linkage box, the surface of the rotating rod is fixedly connected to the inner side of the feeding cylinder with an auger blade, and the front and rear of the left side of the feeding cylinder are provided with extrusion holes.

[0012] Preferably, the surfaces of the two rotating rods are fixedly connected with first gear cylinders that mesh with each other, and the first gear cylinder is located on the inner side of the linkage box, and the surface of the rear rotating rod and the right side of the first gear cylinder are fixedly connected with a convex wheel, the right side of the linkage box is fixedly connected with a motor 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, the right side of the top of the feeding cylinder is fixedly connected with a feeding frame through an opening, and the front and rear sides of the top of the feeding frame are fixedly connected with a sloped sealing seat.

[0013] Preferably, the top of the linkage box is fixedly connected to a second guide slide rod through a bracket, a sliding sleeve frame is slidably installed on the surface of the second guide slide rod, a storage hopper used in conjunction with the inclined sealing seat is fixedly connected to the left side of the sliding sleeve frame, and several storage hoppers are provided, a second spring is sleeved on the front side of the surface of the second guide slide rod, a vertical push plate used in conjunction with the convex runner is fixedly connected to the bottom of the sliding sleeve frame, and the front storage hopper is fixedly connected to the inclined guide frame through the bracket.

[0014] Preferably, a pull-back rotating rod is slidably installed on the left side of the top of the feeding cylinder, and the surface of the pull-back rotating rod is fixedly connected to a pressure rotating plate, and a third spring is sleeved on the left side of the surface of the pull-back rotating rod, and a rectangular pressure groove is opened on the surface of the pull-back rotating rod and extends to the rear, and the right side of the top and bottom of the pull-back rotating rod are fixedly connected to a blocking block, and the upper and lower parts of the right side of the pressure rotating plate are fixedly connected to the third guide sliding rod, and the surface of the third guide sliding rod is slidably installed with a horizontal abutment plate, and the front and rear parts of the right side of the horizontal abutment plate are rotatably connected to an arc head polygonal rod used in conjunction with the inner polygonal ring through a bearing member, and the surface of the arc head polygonal rod is installed with a cutting knife used in conjunction with the extrusion hole groove, and the surface of the third guide sliding rod is sleeved with a fourth spring.

[0015] Preferably, the left end of the pressure turn plate is fixedly connected to the second gear cylinder, the left side of the top of the linkage long frame is fixedly connected to a bent frame, the right end of the bent frame is fixedly connected to an arc-shaped flat plate used in conjunction with the rectangular pressure groove, the left end of the bent frame is fixedly connected to a retraction frame, and an arc-shaped tooth plate used in conjunction with the second gear cylinder is slidably installed on the inner side of the retraction frame, and a fifth spring is fixedly connected between the arc-shaped tooth plate and the retraction frame, and the left side of the bottom of the cooling box is fixedly connected to a punching inclined frame.

[0016] The present invention also discloses a method for using a granulation device based on a twin-screw extruder, which specifically comprises the following steps:

[0017] S1. Before use, first start the water pump to fill the cooling box with water using the water pipe. After the cooling box is filled with water, open the water spray rack valve. Then the water spray rack sprays the water inside the cooling box toward the punching inclined frame. At this time, the water inside the cooling box is in a flowing state. Then turn on the electric heating rod to heat the inside of the hot melt box. Then place the required raw materials in the two storage hoppers. After completing the preparation work, go to step S2;

[0018] S2. After the preparation work is completed, the motor is started to drive the rotating rod to rotate. Since the two first gear cylinders are engaged with each other, the two auger blades rotate synchronously. While the rotating rod rotates, the inner polygonal ring and the arc head polygonal rod are connected to make the cutting knife rotate close to the extrusion hole slot. When the convex wheel rotates with the rotating rod, it will continuously push the vertical push plate to make the two storage hoppers move back and forth under the guidance of the sliding sleeve 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 turn, the raw materials inside the storage hoppers enter the inner side of the feeding long cylinder in batches. The raw materials entering the feeding long cylinder are pushed to the left by the auger blades. The raw materials are melted into a fluid state when passing through the hot melt box, and are cooled into a semi-solidified state by the water inside when passing through the cooling box. When the material moves to the left, it is extruded from the extrusion hole slot, and the extruded raw material is continuously cut into particles by the rotating cutting knife and falls on the top of the punching inclined frame. At this time, the water sprayed by the water spray rack drives the particles to flow downward on the top of the punching inclined frame and cools them. After the particles fall on the top of the inclined guide frame, the reciprocating movement of the storage hopper will also drive the inclined guide frame to shake back and forth under the action of the guide slide and the first spring, and the shaking inclined guide frame will drive the particles to move to the lower right. After the particles fall on the top of the drainage net slot, they are drained. At the same time, the exhaust fan extracts the high-temperature hot air inside the hot melt box and sprays it downward to dry the particles. When the particles move to the screening net slot, the suitable particles fall from the bottom of the screening net slot, and the unsuitable large particles continue to move right and fall on the inner side of the aggregate frame.

[0019] S3. After the aggregate frame is full, the cylinder is started 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 particles for reprocessing. At the same time, the linkage long frame will also use the bent frame to pull the curved flat plate and the retraction frame forward synchronously. First, the curved flat plate is pulled out from the inside of the rectangular pressing groove. At this time, the pull-back rotating rod loses its limit and moves left under the elastic force of the third spring to separate the arc head polygonal rod from the inner polygonal ring. At this time, the cutting knife no longer rotates. At the same time, the second gear barrel is located in front of the arc tooth plate. Then the arc tooth plate moves forward and meshes with the second gear barrel. Drive the entire fourth spring to rotate one hundred and eighty degrees. At this time, the upper cutting knife is located at the lower part, and the cutting knife that has just cut is located at the upper part. When the cylinder is reset, the aggregate frame is located on the inner side of the leak-proof frame again, and when the arc-shaped tooth plate moves backward, it retracts to the inner side of the retraction frame through the arc shape of the surface and will not engage 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 inner side of the rectangular pressure groove to push the fourth spring to move right as a whole, so that the lower arc-head polygonal rod is docked with the inner polygonal ring. Then the cutting knife is driven to continue rotating to cut particles, and the top cutting knife is cleaned and maintained at the same time.

[0020] The present invention provides a granulation device based on a twin-screw extruder and a method for using the same. Compared with existing technologies, it has the following advantages:

[0021] (1) The granulation device based on the twin-screw extruder and its use method, by combining the drainage screening mechanism and the hot melt cutting mechanism, the arrangement of these two mechanisms can make the raw materials be directly melted and cooled when being conveyed inside the feeding cylinder, so that they are pushed out in a semi-solidified state and then directly cut into granules by the cutting knife. In addition, the linkage between the structures can also be used to cool and screen the granules, 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.

[0022] (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, can directly melt the raw materials and semi-cool them before being cut into particles. 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 heat from the water. It does not need to be connected to a traditional water tank and a cutting machine, shortens the overall length and process of the equipment, effectively improves the granulation efficiency, and satisfies current use.

[0023] (3) The granulation device based on the twin-screw extruder and its use method are to install two storage hoppers on the surface of the second guide slide rod by using a sliding sleeve frame, and to use 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 move back and forth to quantitatively mix and discharge materials, thereby ensuring the balance of the raw materials inside the feeding cylinder. At the same time, when the storage hopper moves back and forth, 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 and improves the overall practicality and functionality of the equipment.

[0024] (4) The granulation device based on the twin-screw extruder and its use method are respectively installed with a collection frame, a curved flat plate and a retraction 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 not only push the collection frame to discharge unqualified materials by the cylinder, but also separate the arc-head 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 arc-head polygonal rod is inserted into the inner polygonal ring by connecting the curved flat plate and the rectangular pressing groove, thereby driving the clean cutting knife to continue rotating and cutting, and the upper cutting knife is convenient for the staff to clean and maintain, which indirectly improves the cutting quality and the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1It is a structural schematic diagram of the present invention;

[0026] Figure 2 It is a rear view of the structure of the drainage screening mechanism and the hot melt cutting mechanism of the present invention;

[0027] Figure 3 For the present invention Figure 2 A partial enlarged view of point A in the middle;

[0028] Figure 4 Schematic diagram of the drainage and screening mechanism structure of the present invention;

[0029] Figure 5 A bottom view of the internal structure of the heat-proof box of the present invention;

[0030] Figure 6 A schematic diagram of the leak-proof frame, cylinder, and linkage long frame structure of the present invention;

[0031] Figure 7 Schematic diagram of the hot melt cutting mechanism structure of the present invention;

[0032] Figure 8 It is a schematic diagram of the storage hopper, second spring and vertical push plate structure of the present invention;

[0033] Figure 9 A cross-sectional view of the hot melt box and cooling box structure of the present invention;

[0034] Figure 10 A schematic diagram of the structure of the transverse abutment plate, the cutting blade and the second gear cylinder of the present invention;

[0035] Figure 11 Schematic diagram of the rectangular pressing groove, the blocking block and the third guide slide rod structure of the present invention;

[0036] Figure 12 is a cross-sectional view of the retractable frame structure of the present invention;

[0037] Figure 13 This is a schematic diagram of the first gear cylinder, motor and convex wheel structure of the present invention.

[0038] In the figure: 1. Drainage and screening mechanism; 2. Hot melt cutting mechanism; 101. Bottom plate; 102. Heat protection box; 103. First guide slide; 104. Guide slide cylinder; 105. First spring; 106. Inclined guide frame; 107. Drainage mesh slot; 108. Screening mesh slot; 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 pipe; 207. Water spray frame; 208. Linkage box; 209. Rotating rod; 210. Auger blade; 211. Extrusion hole slot; 212. Inner polygonal ring ; 213, first gear cylinder; 214, motor; 215, convex wheel; 216, second guide slide; 217, feeding frame; 218, inclined sealing seat; 219, sliding frame; 220, storage hopper; 221, second spring; 222, vertical push plate; 223, pull-back turn bar; 224, pressure turn plate; 225, third spring; 226, rectangular pressure groove; 227, blocking block; 228, third guide slide; 229, horizontal abutment plate; 230, fourth spring; 231, arc head polygonal rod; 232, cutting knife; 233, second gear cylinder; 234, bending frame; 235, curved flat plate; 236, retraction frame; 237, arc tooth plate; 238, fifth spring; 239, punching inclined frame. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1-13 The present invention provides a technical solution: a granulation device based on a twin-screw extruder, comprising a drainage and screening mechanism 1, the drainage and screening mechanism 1 comprises a bottom plate 101, the top of the bottom plate 101 is fixedly connected to a heat-proof box 102 through a bracket, and a hot melt cutting mechanism 2 is installed on the upper part of the heat-proof box 102.

[0041] Please refer to Figure 4 、 Figure 5 and Figure 6, showing the overall structure of the drainage screening mechanism 1, the right side of the top of the bottom plate 101 is fixedly connected to the leak-proof frame 111 through a bracket, the left side of the top of the bottom plate 101 is fixedly connected to the cylinder 112 through 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 collection frame 114, and the collection frame 114 is located on the inner side of the leak-proof frame 111, and a first guide slide rod 103 is fixedly connected between the front and rear parts of the inner cavity of the heat-proof box 102, and a guide slide cylinder 104 is slidably installed on the surface of the first guide slide rod 103. The front and rear parts of the surface of the slide rod 103 are both sleeved with a first spring 105, and the top of the guide slide cylinder 104 is fixedly connected to a sloped guide frame 106. 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. The drainage mesh groove 107 is smaller than the hole of the screening mesh groove 108. The top of the heat-proof box 102 is fixedly connected to a ventilation branch pipe 109 through an opening, and several ventilation branch pipes 109 are provided. The inner side of the ventilation branch pipe 109 is fixedly connected to an exhaust fan 110. The exhaust fan 110 is a high-temperature resistant fan and can be used in high-temperature environments.

[0042] Please refer to Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 and Figure 13, showing the overall structure of the hot melt cutting mechanism 2, the hot melt cutting mechanism 2 includes a feeding cylinder 201, and the feeding cylinder 201 is located at the upper part of the heat protection box 102, and the two sides of the surface of the feeding cylinder 201 are fixedly connected with the hot melt box 202 and the cooling box 203 respectively, the top of the ventilation branch pipe 109 is fixedly connected to the bottom of the hot melt box 202, and the electric heating rod 204 is fixedly connected between the top and bottom of the inner cavity of the hot melt box 202, and the electric heating rod 204 is provided with a plurality of them and is located at the front and rear of the inner cavity of the hot melt box 202, and the top of the cooling box 203 is fixedly connected with a water pump 205 through a fixing plate, and the water pump 205 continuously supplies water to the cooling box 203 to ensure the fluidity of the water, and both sides of the water pump 205 are fixedly connected with water pipes 206, The 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 through an opening. The water spray rack 207 continuously drains water, and there are several water spray racks 207. The right side of the inner cavity of the feeding cylinder 201 is rotatably connected to an inner polygonal ring 212 through an opening. The right side of the feeding cylinder 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 sequentially passes through the feeding cylinder 201 and the linkage box 208 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 cylinder 201 are fixedly connected to an auger blade 210. The front and rear of the left side of the long cylinder 201 are both provided with extrusion hole grooves 211, and the surfaces of the two rotating rods 209 are fixedly connected with the first gear cylinders 213 that mesh with each other, and the first gear cylinder 213 is located on the inner side of the linkage box 208, and the surface of the rear rotating rod 209 and the right side of the first gear cylinder 213 are fixedly connected with a convex runner 215, and the right side of the linkage box 208 is fixedly connected with a motor 214 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. The right side of the top of the feeding long cylinder 201 is fixedly connected with a feeding frame 217 through an opening, and the front and rear sides of the top of the feeding frame 217 are fixedly connected with a bevel sealing seat 218. The linkage box 208 The top of the second guide slide 216 is fixedly connected to the second guide slide 216 through a bracket, and a sliding sleeve frame 219 is slidably installed on the surface of the second guide slide 216. The left side of the sliding sleeve frame 219 is fixedly connected to a storage hopper 220 used in conjunction with the inclined sealing seat 218, and several storage hoppers 220 are provided. Different storage hoppers 220 can hold different mixed raw materials. The front side of the second guide slide 216 is sleeved with a second spring 221. The bottom of the sliding sleeve frame 219 is fixedly connected to a vertical push plate 222 used in conjunction with the convex runner 215. The front storage hopper 220 is fixedly connected to the inclined guide frame 106 through a bracket. A pull-back rotating rod 223 is slidably installed on the left side of the top of the feeding long cylinder 201. The surface of the pull-back rotating rod 223 is fixedly connected to a pressure rotating plate 224.The left side of the surface of the pull-back rotating rod 223 is sleeved with a third spring 225, and the surface of the pull-back rotating rod 223 is provided with a rectangular pressure groove 226 that extends to the rear. The right sides of the top and bottom of the pull-back rotating rod 223 are fixedly connected with a blocking block 227, and the upper and lower parts of the right side of the pressure rotating plate 224 are fixedly connected with a third guide slide 228. The surface of the third guide slide 228 is slidably installed with a horizontal support plate 229, and the front and rear parts of the right side of the horizontal support plate 229 are rotatably connected with an arc head polygonal rod 231 used in conjunction with the inner polygonal ring 212 through a bearing. Since the motor 214 drives the inner polygonal ring 212 to rotate slowly, and one end of the arc head polygonal rod 231 is arc-shaped, it is convenient for docking, and the surface installation of the arc head polygonal rod 231 A cutting blade 232 is provided for use with the extrusion slot 211. A fourth spring 230 is sleeved on the surface of the third guide slide 228. The left end of the pressure rotating plate 224 is fixedly connected to the second gear cylinder 233. A curved frame 234 is fixedly connected to the left side of the top of the linkage long frame 113. The right end of the curved frame 234 is fixedly connected to the curved flat plate 235 for use with the rectangular pressure groove 226. The left end of the curved frame 234 is fixedly connected to the retraction frame 236. An arc-shaped tooth plate 237 for use 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. A punching inclined frame 239 is fixedly connected to the left side of the bottom of the cooling box 203.

[0043] The present invention also discloses a method for using a granulation device based on a twin-screw extruder, which specifically comprises the following steps:

[0044] S1. Before use, first start the water pump 205 to use the water pipe 206 to fill the interior of the cooling box 203 with water. After the water inside the cooling box 203 is filled, open the valve of the water spray rack 207. Then the water spray rack 207 sprays the water inside the cooling box 203 toward the material bevel 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 interior of the hot melt box 202. Then, place the required raw materials in the two storage hoppers 220. After completing the preparation work, go to step S2;

[0045] 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 head polygonal rod 231 are connected to make the cutting knife 232 rotate close to the extrusion hole groove 211. When the convex runner 215 rotates together with the rotating rod 209, it will continuously push the vertical push plate 222 to make the two storage hoppers 220 move 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 turn, the raw materials inside the storage hoppers 220 enter the inner side of the feeding long cylinder 201 in batches. The raw materials entering the feeding long cylinder 201 are pushed to the left by the auger blades 210. The raw materials are melted into a fluid state when passing through the hot melt box 202 and cooled by the water inside the cooling box 203. The semi-solidified state is maintained until the raw material moves to the left and is extruded from the extrusion hole slot 211. The extruded raw material is continuously cut into particles by the rotating cutting knife 232 and falls on the top of the punching inclined frame 239. At this time, the water sprayed by the water spraying rack 207 drives the particles to flow downward at the top of the 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 will also drive the inclined guide frame 106 to shake back and forth under the action of the guide slide cylinder 104 and the first spring 105, and the shaking inclined guide frame 106 will drive the particles to move to the lower right. After the particles fall on the top of the drainage mesh slot 107, they are drained. 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. When the particles move to the screening mesh slot 108, the suitable particles fall from the bottom of the screening mesh slot 108, while the unsuitable large particles continue to move right and fall on the inner side of the aggregate frame 114.

[0046] S3, after the inside of the aggregate frame 114 is full, the cylinder 112 is started to push the linkage long frame 113 forward, and 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 bent frame 234 to pull the curved plate 235 and the retraction frame 236 forward synchronously. First, the curved plate 235 is pulled out from the inside of the rectangular pressing groove 226. At this time, the pull-back rotating rod 223 loses its limit and moves left under the elastic force of the third spring 225 to separate the arc head polygonal rod 231 from the inner polygonal ring 212. At this time, the cutting knife 232 no longer rotates. At the same time, the second gear cylinder 233 is located in front of the arc tooth plate 237. Then the arc tooth plate 237 moves forward and is connected to the second gear cylinder 2 33 engages and drives the entire fourth spring 230 to rotate one hundred and eighty degrees. At this time, the upper cutting knife 232 is located at the bottom, and the cutting knife 232 that has just cut is located at the top. When the cylinder 112 is reset, the aggregate frame 114 is located on the inner side of the leak-proof frame 111 again, and the arc-shaped tooth plate 237 retracts to the inner side of the retraction frame 236 through the arc shape of the surface when moving backward, 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 inner side of the rectangular pressing groove 226 to push the fourth spring 230 to move right as a whole, so that the lower arc-head polygonal rod 231 is docked with the inner polygonal ring 212. Then the cutting knife 232 is driven to continue rotating to cut particles, and the top cutting knife 232 is cleaned and maintained at the same time.

[0047] Meanwhile, the contents not described in detail in this specification belong to the prior art 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 inside the leak-proof frame (111); A first guide slide (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 (103), and a first spring (105) is sleeved on the front and rear parts of the surface of the first guide slide (103). The top of the guide slide cylinder (104) is fixedly connected to an inclined guide frame (106), and 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 inclined guide frame (106). The top of the heat-proof box (102) is fixedly connected to a ventilation branch pipe (109) through an opening, and a plurality of ventilation branch pipes (109) are provided. The inner side of the ventilation branch pipe (109) is fixedly connected to an exhaust fan (110); The hot melt cutting mechanism (2) includes a material feeding cylinder (201), and the material feeding cylinder (201) is located at the upper part of the heat protection box (102). The two sides of the surface of the material feeding cylinder (201) are 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). An electric heating rod (204) is fixedly connected between the top and bottom of the inner cavity of the hot melt box (202), and the electric heating rod (204) is provided with a plurality of parallel positions. At the front and rear 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 pump (205) are fixedly connected to a water pipe (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 inner side of the cooling box (203), and 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; The right side of the inner cavity of the feeding long cylinder (201) is rotatably connected to an inner polygonal ring (212) through an opening, the right side of the feeding long cylinder (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) sequentially passes through the feeding long cylinder (201) and the linkage box (208) 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 long cylinder (201) are fixedly connected to an auger blade (210), and the front and rear parts of the left side of the feeding long cylinder (201) are both provided with extrusion slots (211); 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) extending to the rear is opened on the surface of the pull-back rotating rod (223), 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 right sides of the pressure rotating plate (224) are fixedly connected. They are all fixedly connected with a third guide slide (228), a transverse abutment plate (229) is slidably mounted on the surface of the third guide slide (228), the front and rear portions of the right side of the transverse abutment plate (229) are both rotatably connected with an arc-shaped polygonal rod (231) used in conjunction with the inner polygonal ring (212) through bearings, a cutting knife (232) used in conjunction with the extrusion hole groove (211) is mounted on the surface of the arc-shaped polygonal rod (231), and a fourth spring (230) is sleeved on the surface of the third guide slide (228); 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 the curved frame (234), the right end of the curved frame (234) is fixedly connected to the 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 the retraction frame (236), the inner side of the retraction frame (236) is slidably mounted with an arc-shaped tooth plate (237) used in conjunction with the second gear cylinder (233), and 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 the punching inclined frame (239).

2. A granulation device based on a twin-screw extruder according to claim 1, 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) through a bracket, and the output shaft of the motor (214) is fixedly connected to the right end of the front rotating rod (209) through a coupling. The right side of the top of the feeding long cylinder (201) is fixedly connected to a feeding frame (217) through an opening, and the front and rear sides of the top of the feeding frame (217) are fixedly connected to a bevel sealing seat (218).

3. A granulation device based on a twin-screw extruder according to claim 2, characterized in that: The top of the linkage box (208) is fixedly connected to a second guide slide (216) through a bracket, and a sliding sleeve frame (219) is slidably mounted on the surface of the second guide slide (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 (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 of the storage hopper (220) is fixedly connected to the inclined guide frame (106) through a bracket.

4. The method for using a granulation device based on a twin-screw extruder according to claim 3, 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 water inside the cooling box (203) is filled, open the valve of the water spray rack (207). Then, the water spray rack (207) sprays the water inside the cooling box (203) toward the punching 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 interior of the hot melt box (202). Then, place the required raw materials inside the two storage hoppers (220). After completing the preparation work, 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 engaged with each other, the two auger blades (210) rotate synchronously. While the rotating rod (209) rotates, the inner polygonal ring (212) and the arc polygonal rod (231) are connected to each other to make the cutting knife (232) rotate along the extrusion hole (211). When the convex wheel (215) rotates 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 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 turn, the raw materials in the storage hoppers (220) enter the inner side of the feeding cylinder (201) in batches. The raw materials entering the feeding cylinder (201) are pushed to the left by the auger blade (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 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 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), and the shaking inclined guide frame (106) drives the particles to move to the lower right. After the particles fall on the top of the draining mesh slot (107), they are drained. 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. 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) 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 curved flat plate (235) and the retraction frame (236) forward synchronously. First, The curved flat 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 and aligns with the second gear cylinder. (233) engages and drives the entire fourth spring (230) to rotate one hundred and eighty degrees. At this time, the upper cutting knife (232) is located at the bottom, and the cutting knife (232) that has just cut is located at the top. When the cylinder (112) is reset, the aggregate frame (114) is again located on the inner side of the leak-proof frame (111), and the arc-shaped tooth plate (237) retracts to the inner side of the retraction frame (236) through the arc shape of the surface when moving backward 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 inner side of the rectangular pressing groove (226) to push the fourth spring (230) to move right as a whole, so that the lower arc-shaped polygonal rod (231) is docked with the inner polygonal ring (212). Then the cutting knife (232) is driven to continue rotating to cut particles, and the top cutting knife (232) is cleaned and maintained at the same time.

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