PPS plastic granulator

Abstract

The invention relates to the technical field of pelletizers, and discloses a PPS plastic pelletizer which comprises an extrusion cylinder, a mold, a melting cylinder, a feeding port, a discharging port, two electric valves, a heater, an extraction and purification device, a stirring device, a scraping device, a controller and the like, the mold communicates with the extrusion cylinder, the bottom of the melting cylinder is fixedly connected with the top of the extrusion cylinder and communicates with the extrusion cylinder, and the bottom of the melting cylinder communicates with the discharging port. The extraction and purification device is connected with the melting barrel, the stirring device is connected with the melting barrel and the extraction and purification device, and the scraping device is connected with the melting barrel and the stirring device. And the situation that waste gas in the melting cylinder is continuously accumulated, the pressure in the melting cylinder is increased, and the plastic melting quality is affected is prevented, the exhausted waste gas is exhausted after being purified through the purification box, and the waste gas is prevented from affecting the environment and workers.

Description

Technical Field

[0001] The invention relates to the technical field of granulators, in particular to a PPS plastic granulator. Background Art

[0002] With the rapid development of the plastic processing industry, PPS (polyphenylene sulfide) plastics have been widely used in the fields of electronics, automobile manufacturing, aerospace, etc. due to their excellent high temperature resistance and corrosion resistance. As a key equipment for producing PPS plastic particles, PPS plastic granulator plays a vital role in the plastic melting process.

[0003] In the process of melting plastics, the plastic raw materials will undergo pyrolysis and chemical reactions due to high temperature, thereby releasing a variety of waste gases including VOCs, smoke, odorous gases, etc. If these waste gases continue to accumulate in the melting barrel, it may cause the pressure in the melting barrel to increase, which is not only very risky but also affects the quality of plastic melting. Therefore, a PPS plastic granulator is proposed. Summary of the invention

[0004] The present invention aims to solve the technical problem of how to discharge the waste gas generated in time when melting plastic raw materials to prevent the pressure in the melting cylinder from continuing to increase, causing risks and affecting the melting quality of the plastic raw materials, and provides a PPS plastic granulator.

[0005] The technical solution adopted by the present invention to solve its technical problem is: A PPS plastic granulator comprises four supporting columns, an extrusion barrel, a mold, a melting barrel, a feeding port, a discharging port, two electric valves, a heater, an extraction and purification device, a stirring device, a scraping device and a controller.

[0006] The extrusion cylinder is transversely arranged above the four support columns, and the bottom of the extrusion cylinder is fixedly connected to the tops of the four support columns respectively.

[0007] The die is arranged on the side of the extrusion cylinder, opposite to the outlet of the extrusion cylinder, and the die is communicated with the extrusion cylinder.

[0008] The melting cylinder is vertically arranged on the upper part of the extrusion cylinder, and the bottom of the melting cylinder is fixedly connected with the top of the extrusion cylinder and communicated with the extrusion cylinder.

[0009] The feed port is arranged at the top of the melting cylinder, one end of the feed port is connected with the melting cylinder, and the other end is connected with the outside.

[0010] The discharge port is arranged at the bottom of the melting cylinder, one end of the discharge port is communicated with the melting cylinder, and the other end of the discharge port is communicated with the extrusion cylinder.

[0011] The two electric valves are respectively arranged transversely inside the feed port and the discharge port.

[0012] The heater is arranged around the inner wall of the melting cylinder, and the heater is fixedly connected to the melting cylinder.

[0013] The extraction and purification device is arranged on the upper part of the melting cylinder, and the extraction and purification device is connected with the melting cylinder.

[0014] The stirring device is arranged inside the melting cylinder, and part of it is located at the upper part of the melting cylinder. The stirring device is connected to the melting cylinder and connected to the extraction and purification device.

[0015] The scraping device is arranged inside the melting tube and below the stirring device. The scraping device is connected to the melting tube and the stirring device.

[0016] The controller is arranged on the side of the extrusion barrel away from the mold, the controller is fixedly connected to the extrusion barrel, and the controller is electrically connected to the two electric valves, the heater, and the extraction and purification device respectively.

[0017] When using this equipment, the staff opens the electric valve of the feed port through the controller, and then pours the PPS plastic raw material into the melting barrel through the feed port. The staff closes the electric valve of the feed port through the controller and starts the heater. The heater heats and melts the plastic raw material. Then the staff extracts the waste gas generated by the melting of the plastic through the exhaust purification device, purifies it and discharges it, stirs the plastic raw material through the stirring device to improve the melting efficiency of the plastic raw material, scrapes off the plastic solution splashed and attached to the inner wall of the melting barrel through the scraping device, and scrapes the plastic solution that continues to stick to the inner wall of the melting barrel to prevent it from turning black and deteriorating, affecting the melting quality. After the melting is completed, the staff opens the electric valve of the discharge port through the controller, and the melted plastic falls into the extrusion barrel. The extrusion barrel extrude the melted plastic from the mold, and the staff can cut it to complete the plastic granulation work.

[0018] Furthermore, the extraction and purification device includes a cylinder body, a driving cylinder, a piston, an exhaust pipe, a purification box, an exhaust pipe, and two one-way valves.

[0019] The cylinder body is arranged transversely above the melting barrel and is located on the side of the feed port, and the bottom of the cylinder body is fixedly connected to the top of the melting barrel.

[0020] The driving cylinder is arranged inside the cylinder body, and is located on the side of the inner wall of the side of the cylinder body close to the feed inlet, and the side of the driving cylinder is fixedly connected to the inner wall of the side of the cylinder body.

[0021] The piston is vertically arranged inside the cylinder body, and is located on the side of the driving cylinder away from the feed port. The piston is fixedly connected to the telescopic end of the driving cylinder, and the piston is slidably connected to the cylinder body along the inner wall of the cylinder body.

[0022] The exhaust pipe is obliquely arranged at the lower part of the cylinder body, and the exhaust pipe passes through the top of the melting barrel. One end of the exhaust pipe is communicated with the interior of the cylinder body, and the other end is communicated with the interior of the melting barrel.

[0023] The purification box is arranged above the melting cylinder and is located on the side of the cylinder body away from the feed port, and the bottom of the purification box is fixedly connected to the top of the melting cylinder.

[0024] The exhaust pipe is transversely arranged above the melting barrel and between the cylinder body and the purification box. One end of the exhaust pipe is connected to the cylinder body, and the other end is connected to the purification box.

[0025] The two one-way valves are respectively arranged inside the air extraction pipe and the exhaust pipe, and the two one-way valves are respectively fixedly connected to the air extraction pipe and the exhaust pipe.

[0026] When it is necessary to extract the waste gas, the staff controls the telescopic end of the driving cylinder to move to the left through the controller, and the telescopic end of the driving cylinder drives the piston to move to the left, and the piston drives the cross bar to move to the left, driving the waste gas in the melting cylinder to enter the cylinder through the exhaust hood, the exhaust pipe, and the one-way valve in turn. The staff controls the telescopic end of the driving cylinder to move right through the controller, and the telescopic end of the driving cylinder drives the piston to move to the right, and the piston drives the cross bar to move to the right, pushing the waste gas in the cylinder through the one-way valve and the exhaust pipe in turn into the purification box. After the purification box purifies the waste gas, the purified waste gas is discharged.

[0027] Furthermore, an air port is provided at the upper portion of the melting cylinder, and a one-way valve is provided in the air port for ventilating air into the melting cylinder.

[0028] Prevent continuous exhaust and low pressure in the melting barrel, which will affect the melting efficiency of plastic raw materials.

[0029] Furthermore, it comprises an exhaust hood which is arranged inside the melting barrel, one end of the exhaust hood is connected with the exhaust pipe, and the other end of the exhaust hood is connected with the inside of the melting barrel.

[0030] The exhaust gas is gathered through the exhaust hood to improve the exhaust efficiency.

[0031] Furthermore, the stirring device includes a cross bar, a rack, a first telescopic rod, a first gear, a stirring shaft, a plurality of stirring blades, a slide groove, two pulleys, and a connecting rod.

[0032] The cross bar is transversely arranged on the side of the cylinder body close to the feed port, one end of the cross bar is fixedly connected to the piston, and the other end of the cross bar passes through the side of the cylinder body and extends to the outside of the cylinder body.

[0033] The rack is transversely arranged on the front side of the cross bar, and the rack is fixedly connected to the cross bar.

[0034] The first telescopic rod is vertically arranged on the upper part of the melting cylinder, located at the center of the melting cylinder, and vertically penetrates the top of the melting cylinder. The first telescopic rod is rotatably connected to the melting cylinder.

[0035] The first gear is transversely arranged above the melting cylinder and sleeved on the outside of the first telescopic rod. The axis of the first gear coincides with the axis of the first telescopic rod. The first gear is fixedly connected to the first telescopic rod and meshes with the rack.

[0036] The stirring shaft is vertically arranged inside the melting cylinder and below the first telescopic rod. The axis of the stirring shaft coincides with the axis of the first telescopic rod. The upper end of the stirring shaft is fixedly connected to the bottom end of the first telescopic rod.

[0037] A plurality of stirring blades are transversely arranged inside the melting cylinder, and one end of the plurality of stirring blades is respectively fixedly connected to the stirring shaft.

[0038] The chute is in an undulating wave shape and is arranged around the upper inner wall of the melting cylinder.

[0039] The two pulleys are vertically symmetrically arranged inside the slide groove, and the two pulleys are respectively slidably connected with the slide groove along the slide groove.

[0040] The connecting rod is transversely arranged inside the melting cylinder and above a plurality of stirring blades. The connecting rod passes through the stirring shaft, is fixedly connected to the stirring shaft, and both ends of the connecting rod are rotatably connected to the two pulleys respectively.

[0041] When the plastic raw materials need to be stirred, the cross bar drives the rack to move, the rack drives the first gear to rotate, the first gear drives the first telescopic rod to rotate, the first telescopic rod drives the stirring shaft to rotate, the stirring shaft drives the connecting rod to rotate, drives the second telescopic rod to rotate, drives the plurality of stirring blades to rotate, and the plurality of stirring blades stir the plastic raw materials, so that the plastic raw materials are heated evenly, thereby improving the melting efficiency of the plastic raw materials.

[0042] When the stirring shaft drives the connecting rod to rotate, the connecting rod drives the two pulleys to rotate, and the two pulleys make curved undulating motion in the slide groove, and then the two pulleys drive the connecting rod to rise and fall, the connecting rod drives the stirring shaft to rise and fall, and the stirring shaft drives several stirring blades to rise and fall, and several stirring blades rise and fall during the rotation process, so that plastic raw materials at different heights can be stirred, further improving the efficiency of melting plastic raw materials.

[0043] Furthermore, the plurality of stirring blades are parallel to each other.

[0044] The stirring blades are enabled to stably stir the plastic raw materials.

[0045] Furthermore, the stirring shaft and the first telescopic rod are fixedly connected by welding.

[0046] This allows the stirring shaft to perform stable undulating motion.

[0047] Furthermore, the scraping device includes a rotating sleeve, a second telescopic rod, two L-shaped scrapers, and a plurality of scrapers.

[0048] The rotating sleeve is vertically arranged inside the melting cylinder and below the stirring shaft. The axis of the rotating sleeve coincides with the axis of the stirring shaft, and the bottom of the rotating sleeve is fixedly connected to the melting cylinder.

[0049] The second telescopic rod is vertically arranged inside the melting cylinder and below the stirring shaft. The lower part of the second telescopic rod passes through the interior of the rotating sleeve. The axis of the second telescopic rod coincides with the axis of the stirring shaft. The upper end of the second telescopic rod is fixedly connected to the bottom end of the stirring shaft. The lower part of the second telescopic rod is rotatably connected to the rotating sleeve.

[0050] The two L-shaped scrapers are symmetrically arranged inside the melting cylinder and on both sides of the non-telescopic end of the second telescopic rod. One end of the two L-shaped scrapers is respectively fixedly connected to the lower part of the second telescopic rod.

[0051] A plurality of scrapers are arranged inside the melting cylinder, respectively arranged between the two L-shaped scrapers and the inner wall of the melting cylinder, one end of the plurality of scrapers is respectively fixedly connected to the two L-shaped scrapers, and the other end is respectively closely attached to the inner wall of the melting cylinder.

[0052] When the plastic solution on the inner wall of the melting cylinder needs to be filtered, the second telescopic rod drives the two L-shaped plates to rotate, and the two L-shaped plates drive a number of scrapers to rotate. The number of scrapers scrapes off the plastic liquid splashed and attached to the inner wall of the melting cylinder, and scrapes the plastic liquid that continues to stick to the inner wall of the melting cylinder to prevent the plastic liquid from becoming black and deteriorating due to continuous heating, thereby affecting the melting quality.

[0053] Furthermore, the material of the scrapers is high temperature resistant and corrosion resistant stainless steel.

[0054] Prevent the scraper bristles from melting when scraping the plastic solution.

[0055] Furthermore, a plurality of scraping bristles are evenly distributed on the sides of the two L-shaped scraping plates.

[0056] The scraper can effectively scrape off the plastic solution.

[0057] Beneficial effects of the present invention: 1. The present invention arranges a cylinder body, a piston, an exhaust pipe, a purification box and other structures, so that the waste gas generated when the plastic raw material is melted can be promptly extracted through the exhaust pipe, thereby preventing the waste gas from continuously accumulating in the melting barrel, increasing the pressure in the melting barrel, and affecting the melting quality of the plastic. The exhausted waste gas is purified in the purification box before being discharged, thereby preventing the waste gas from affecting the environment and the staff.

[0058] 2. The present invention provides a first telescopic rod, a stirring shaft, a plurality of stirring blades, two pulleys and other structures, so that when the plastic is melted, the plastic raw material is stirred so that the raw material is heated evenly and the melting efficiency is improved. When the plastic is stirred, the stirring blades can move up and down, which expands the stirring range, makes the stirring more comprehensive, and effectively improves the melting efficiency of the plastic raw material.

[0059] 3. The present invention provides a rotating sleeve, a second telescopic rod, an L-shaped scraper, a scraper and other structures, so that the liquid splashed onto the inner wall of the melting barrel when the plastic raw material is melted can be scraped off, and the plastic solution continuously adhering to the inner wall of the melting barrel can be scraped off, thereby preventing the melted liquid from being continuously heated and becoming black and deteriorated, thereby affecting the melting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a schematic diagram of the front cross-sectional structure of the PPS plastic granulator; Figure 2 This is a schematic diagram of the top view of the melting barrel of the PPS plastic granulator.

[0061] Explanation of the reference numerals in the accompanying drawings: 1. Support column; 2. Extrusion barrel; 3. Mould; 4. Melting barrel; 5. Feed port; 6. Discharge port; 7. Electric valve; 8. Heater; 9. Cylinder body; 10. Driving cylinder; 11. Piston; 12. Exhaust pipe; 13. Purification box; 14. Exhaust pipe; 15. One-way valve; 16. Cross bar; 17. Rack; 18. First telescopic rod; 19. First gear; 20. Stirring shaft; 21. Stirring blade; 22. Slide; 23. Pulley; 24. Connecting rod; 25. Rotating sleeve; 26. Second telescopic rod; 27. L-shaped scraper; 28. Scraper; 29. ​​Controller; 30. Exhaust hood. DETAILED DESCRIPTION

[0062] The concept and technical effects of the present invention will be clearly and completely described below in conjunction with embodiments to fully understand the purpose, features and effects of the present invention.

[0063] like Figure 1-2 As shown, the technical solution adopted by the present invention to solve its technical problem is: A PPS plastic granulator comprises four support columns 1, an extrusion barrel 2, a mold 3, a melting barrel 4, a feed port 5, a discharge port 6, two electric valves 7, a heater 8, an extraction and purification device, a stirring device, a scraping device, and a controller 29.

[0064] The extrusion cylinder 2 is transversely arranged above the four support columns 1 , and the bottom of the extrusion cylinder 2 is fixedly connected to the top of the four support columns 1 respectively.

[0065] The die 3 is disposed on the side of the extrusion cylinder 2 , and is disposed opposite to the outlet of the extrusion cylinder 2 . The die 3 is communicated with the extrusion cylinder 2 .

[0066] The melting cylinder 4 is vertically arranged on the upper part of the extrusion cylinder 2 , and the bottom of the melting cylinder 4 is fixedly connected to the top of the extrusion cylinder 2 and communicated with the extrusion cylinder 2 .

[0067] The feed port 5 is arranged at the top of the melting cylinder 4 , one end of the feed port 5 is connected to the melting cylinder 4 , and the other end of the feed port 5 is connected to the outside.

[0068] The discharge port 6 is arranged at the bottom of the melting cylinder 4 , one end of the discharge port 6 is communicated with the melting cylinder 4 , and the other end of the discharge port 6 is communicated with the extrusion cylinder 2 .

[0069] The two electric valves 7 are transversely arranged inside the feed port 5 and the discharge port 6 respectively.

[0070] The heater 8 is disposed around the inner wall of the melting cylinder 4 , and the heater 8 is fixedly connected to the melting cylinder 4 .

[0071] The extraction and purification device is arranged on the upper part of the melting cylinder 4 , and the extraction and purification device is connected to the melting cylinder 4 .

[0072] The stirring device is arranged inside the melting cylinder 4, and part of it is located at the upper part of the melting cylinder 4. The stirring device is connected to the melting cylinder 4 and connected to the extraction and purification device.

[0073] The scraping device is arranged inside the melting cylinder 4 and below the stirring device. The scraping device is connected to the melting cylinder 4 and the stirring device.

[0074] The controller 29 is disposed on the side of the extrusion barrel 2 away from the mold 3 . The controller 29 is fixedly connected to the extrusion barrel 2 . The controller 29 is electrically connected to the two electric valves 7 , the heater 8 , and the extraction and purification device respectively.

[0075] When using this equipment, the staff opens the electric valve 7 of the feed port 5 through the controller 29, and then pours the PPS plastic raw material into the melting barrel 4 through the feed port 5. The staff closes the electric valve 7 of the feed port 5 through the controller 29 and starts the heater 8. The heater 8 heats and melts the plastic raw material. Then the staff extracts the waste gas generated by the melting of the plastic through the exhaust purification device, purifies it and discharges it, stirs the plastic raw material through the stirring device to improve the melting efficiency of the plastic raw material, scrapes off the plastic solution splashed and attached to the inner wall of the melting barrel 4 through the scraping device, and scrapes the plastic solution that continues to stick to the inner wall of the melting barrel 4 to prevent it from turning black and deteriorating, affecting the melting quality. After the melting is completed, the staff opens the electric valve 7 of the discharge port 6 through the controller 29, and the melted plastic falls into the extrusion barrel 2. The extrusion barrel 2 extrude the melted plastic from the mold 3, and the staff can cut it to complete the plastic granulation work.

[0076] The extraction and purification device includes a cylinder body 9 , a driving cylinder 10 , a piston 11 , an exhaust pipe 12 , a purification box 13 , an exhaust pipe 14 , and two one-way valves 15 .

[0077] The cylinder body 9 is transversely arranged above the melting cylinder 4 and is located on the side of the feed port 5 . The bottom of the cylinder body 9 is fixedly connected to the top of the melting cylinder 4 .

[0078] The driving cylinder 10 is arranged inside the cylinder body 9 , and is located on the side of the inner wall of the side of the cylinder body 9 close to the feed port 5 . The side of the driving cylinder 10 is fixedly connected to the inner wall of the side of the cylinder body 9 .

[0079] The piston 11 is vertically arranged inside the cylinder body 9 and is located on the side of the driving cylinder 10 away from the feed port 5. The piston 11 is fixedly connected to the telescopic end of the driving cylinder 10, and the piston 11 is slidably connected to the cylinder body 9 along the inner wall of the cylinder body 9.

[0080] The exhaust pipe 12 is obliquely arranged at the lower part of the cylinder body 9 , and passes through the top of the melting tube 4 . One end of the exhaust pipe 12 is communicated with the interior of the cylinder body 9 , and the other end is communicated with the interior of the melting tube 4 .

[0081] The purification box 13 is arranged above the melting cylinder 4 and is located on the side of the cylinder body 9 away from the feed port 5 . The bottom of the purification box 13 is fixedly connected to the top of the melting cylinder 4 .

[0082] The exhaust pipe 14 is transversely arranged above the melting barrel 4 and between the cylinder body 9 and the purification box 13 . One end of the exhaust pipe 14 is connected to the cylinder body 9 , and the other end is connected to the purification box 13 .

[0083] The two one-way valves 15 are respectively disposed inside the air extraction pipe 12 and the exhaust pipe 14 , and the two one-way valves 15 are respectively fixedly connected to the air extraction pipe 12 and the exhaust pipe 14 .

[0084] When it is necessary to extract the waste gas, the staff controls the telescopic end of the driving cylinder 10 to move to the left through the controller 29, and the telescopic end of the driving cylinder 10 drives the piston 11 to move to the left, and the piston 11 drives the cross bar 16 to move to the left, driving the waste gas in the melting tube 4 to enter the cylinder body 9 through the exhaust hood 30, the exhaust pipe 12, and the one-way valve 15 in sequence. The staff controls the telescopic end of the driving cylinder 10 to move right through the controller 29, and the telescopic end of the driving cylinder 10 drives the piston 11 to move right, and the piston 11 drives the cross bar 16 to move right, pushing the waste gas in the cylinder body 9 to enter the purification box 13 through the one-way valve 15 and the exhaust pipe 14 in sequence, and the purification box 13 purifies the waste gas and discharges the purified waste gas.

[0085] The upper part of the melting tube 4 is provided with an air port, and a one-way valve capable of ventilating the melting tube 4 is provided in the air port.

[0086] Prevent continuous air extraction, which may cause the pressure in the melting tube 4 to be too low, thereby affecting the melting efficiency of the plastic raw materials.

[0087] The exhaust hood 30 is provided inside the melting barrel 4 , one end of the exhaust hood 30 is communicated with the exhaust pipe 12 , and the other end of the exhaust hood 30 is communicated with the inside of the melting barrel 4 .

[0088] The exhaust gas is gathered through the exhaust hood 30 to improve the exhaust efficiency.

[0089] The stirring device includes a cross bar 16 , a rack 17 , a first telescopic rod 18 , a first gear 19 , a stirring shaft 20 , a plurality of stirring blades 21 , a slide 22 , two pulleys 23 , and a connecting rod 24 .

[0090] The cross bar 16 is transversely arranged on the side of the cylinder body 9 close to the feed port 5 , one end of the cross bar 16 is fixedly connected to the piston 11 , and the other end of the cross bar 16 passes through the side of the cylinder body 9 and extends outside the cylinder body 9 .

[0091] The rack 17 is transversely disposed on the front side of the cross bar 16 , and the rack 17 is fixedly connected to the cross bar 16 .

[0092] The first telescopic rod 18 is vertically arranged on the upper part of the melting cylinder 4 , at the center of the melting cylinder 4 , and vertically penetrates the top of the melting cylinder 4 . The first telescopic rod 18 is rotatably connected to the melting cylinder 4 .

[0093] The first gear 19 is disposed transversely above the melting cylinder 4 and sleeved on the outside of the first telescopic rod 18 . The axis of the first gear 19 coincides with the axis of the first telescopic rod 18 . The first gear 19 is fixedly connected to the first telescopic rod 18 , and the first gear 19 is meshed with the rack 17 .

[0094] The stirring shaft 20 is vertically arranged inside the melting cylinder 4 and below the first telescopic rod 18 . The axis of the stirring shaft 20 coincides with the axis of the first telescopic rod 18 . The upper end of the stirring shaft 20 is fixedly connected to the bottom end of the first telescopic rod 18 .

[0095] A plurality of stirring blades 21 are transversely disposed inside the melting cylinder 4 , and one end of the plurality of stirring blades 21 is fixedly connected to the stirring shaft 20 .

[0096] The chute 22 is in an undulating wave shape and is disposed around the upper inner wall of the melting cylinder 4 .

[0097] The two pulleys 23 are vertically symmetrically arranged inside the slide groove 22 , and the two pulleys 23 are slidably connected with the slide groove 22 along the slide groove 22 .

[0098] The connecting rod 24 is transversely arranged inside the melting cylinder 4 and above the plurality of stirring blades 21 . The connecting rod 24 passes through the stirring shaft 20 . The connecting rod 24 is fixedly connected to the stirring shaft 20 , and both ends of the connecting rod 24 are rotatably connected to the two pulleys 23 .

[0099] When the plastic raw materials need to be stirred, the cross bar 16 drives the rack 17 to move, the rack 17 drives the first gear 19 to rotate, the first gear 19 drives the first telescopic rod 18 to rotate, the first telescopic rod 18 drives the stirring shaft 20 to rotate, the stirring shaft 20 drives the connecting rod 24 to rotate, drives the second telescopic rod 26 to rotate, drives the plurality of stirring blades 21 to rotate, and the plurality of stirring blades 21 stir the plastic raw materials, so that the plastic raw materials are heated evenly, thereby improving the melting efficiency of the plastic raw materials.

[0100] When the stirring shaft 20 drives the connecting rod 24 to rotate, the connecting rod 24 drives the two pulleys 23 to rotate, and the two pulleys 23 make a curved undulating motion in the slide groove 22, and then the two pulleys 23 drive the connecting rod 24 to rise and fall, and the connecting rod 24 drives the stirring shaft 20 to rise and fall, and the stirring shaft 20 drives the plurality of stirring blades 21 to rise and fall, and the plurality of stirring blades 21 rise and fall during the rotation process, so that the plastic raw materials at different heights can be stirred, thereby further improving the efficiency of melting the plastic raw materials.

[0101] The plurality of stirring blades 21 are parallel to each other.

[0102] The stirring blade 21 is enabled to stably stir the plastic raw material.

[0103] The stirring shaft 20 and the first telescopic rod 18 are fixedly connected by welding.

[0104] This enables the stirring shaft 20 to perform stable undulating motion.

[0105] The scraping device includes a rotating sleeve 25 , a second telescopic rod 26 , two L-shaped scrapers 27 , and a plurality of scraping bristles 28 .

[0106] The rotating sleeve 25 is vertically arranged inside the melting cylinder 4 and below the stirring shaft 20 . The axis of the rotating sleeve 25 coincides with the axis of the stirring shaft 20 . The bottom of the rotating sleeve 25 is fixedly connected to the melting cylinder 4 .

[0107] The second telescopic rod 26 is vertically arranged inside the melting cylinder 4 and below the stirring shaft 20. The lower part of the second telescopic rod 26 penetrates into the interior of the rotating sleeve 25. The axis of the second telescopic rod 26 coincides with the axis of the stirring shaft 20. The upper end of the second telescopic rod 26 is fixedly connected to the bottom end of the stirring shaft 20, and the lower part of the second telescopic rod 26 is rotatably connected to the rotating sleeve 25.

[0108] The two L-shaped scrapers 27 are symmetrically arranged inside the melting cylinder 4 and on both sides of the non-telescopic end of the second telescopic rod 26 . One end of the two L-shaped scrapers 27 is fixedly connected to the lower part of the second telescopic rod 26 .

[0109] A plurality of scrapers 28 are arranged inside the melting tube 4 , respectively arranged between the two L-shaped scrapers 27 and the inner wall of the melting tube 4 , one end of the plurality of scrapers 28 is respectively fixedly connected to the two L-shaped scrapers 27 , and the other end is respectively in close contact with the inner wall of the melting tube 4 .

[0110] When the plastic solution on the inner wall of the melting cylinder 4 needs to be filtered, the second telescopic rod 26 drives the two L-shaped plates to rotate, and the two L-shaped plates drive the plurality of scrapers 28 to rotate. The plurality of scrapers 28 scrapes off the plastic liquid splashed and attached to the inner wall of the melting cylinder 4, and scrapes the plastic liquid that continues to adhere to the inner wall of the melting cylinder 4, so as to prevent the plastic liquid from being continuously heated and becoming black and deteriorated, thereby affecting the melting quality.

[0111] The material of the scraping bristles 28 is high temperature resistant and corrosion resistant stainless steel.

[0112] The scraping bristles 28 are prevented from melting when scraping the plastic solution.

[0113] A plurality of scraping bristles 28 are evenly distributed on the sides of the two L-shaped scrapers 27 .

[0114] The scraper 28 can effectively scrape off the plastic solution.

[0115] Working principle: When using this equipment, the staff opens the electric valve 7 of the feed port 5 through the controller 29, and then pours the PPS plastic raw material into the melting tube 4 through the feed port 5. The staff closes the electric valve 7 of the feed port 5 through the controller 29 and starts the heater 8, and the heater 8 heats and melts the plastic raw material.

[0116] When it is necessary to extract the waste gas in the melting tube 4, the staff controls the telescopic end of the driving cylinder 10 to move to the left through the controller 29, and the telescopic end of the driving cylinder 10 drives the piston 11 to move to the left, and the piston 11 drives the cross bar 16 to move to the left, driving the waste gas in the melting tube 4 to enter the cylinder body 9 through the exhaust hood 30, the exhaust pipe 12, and the one-way valve 15 in sequence.

[0117] When the piston 11 drives the cross bar 16 to move left, the cross bar 16 drives the rack 17 to move left, the rack 17 drives the first gear 19 to rotate forward, the first gear 19 drives the first telescopic rod 18 to rotate forward, the first telescopic rod 18 drives the stirring shaft 20 to rotate forward, the stirring shaft 20 drives the connecting rod 24 to rotate forward, drives the second telescopic rod 26 to rotate forward, drives the plurality of stirring blades 21 to rotate forward, the plurality of stirring blades 21 stir the plastic raw material, so that the plastic raw material is heated evenly, and the melting efficiency of the plastic raw material is improved.

[0118] When the stirring shaft 20 drives the connecting rod 24 to rotate forward, the connecting rod 24 drives the two pulleys 23 to rotate forward, and the two pulleys 23 make a curved undulating motion in the slide groove 22, and then the two pulleys 23 drive the connecting rod 24 to rise and fall, the connecting rod 24 drives the stirring shaft 20 to rise and fall, and the stirring shaft 20 drives the plurality of stirring blades 21 to rise and fall, and the plurality of stirring blades 21 rise and fall during the rotation process, so that the plastic raw materials at different heights can be stirred, thereby further improving the efficiency of melting the plastic raw materials.

[0119] When the stirring shaft 20 drives the second telescopic rod 26 to rotate forward, the second telescopic rod 26 drives the two L-shaped plates to rotate forward, and the two L-shaped plates drive the plurality of scrapers 28 to rotate forward. The plurality of scrapers 28 scrapes off the plastic liquid splashed and attached to the inner wall of the melting tube 4, and scrapes the plastic liquid that continues to adhere to the inner wall of the melting tube 4, to prevent the plastic liquid from becoming black and deteriorating due to continuous heating, thereby affecting the melting quality.

[0120] When it is necessary to discharge the exhaust gas, the staff controls the telescopic end of the driving cylinder 10 to move right through the controller 29, and the telescopic end of the driving cylinder 10 drives the piston 11 to move right, and the piston 11 drives the cross bar 16 to move right, pushing the exhaust gas in the cylinder body 9 through the one-way valve 15 and the exhaust pipe 14 into the purification box 13 in sequence. After the purification box 13 purifies the exhaust gas, the purified exhaust gas is discharged.

[0121] When the piston 11 drives the cross bar 16 to move right, the cross bar 16 drives the rack 17 to move right, the rack 17 drives the first gear 19 to rotate in the opposite direction, the first gear 19 drives the first telescopic rod 18 to rotate in the opposite direction, the first telescopic rod 18 drives the stirring shaft 20 to rotate in the opposite direction, the stirring shaft 20 drives the connecting rod 24 to rotate in the opposite direction, drives the second telescopic rod 26 to rotate in the opposite direction, drives the plurality of stirring blades 21 to rotate in the opposite direction, and the plurality of stirring blades 21 stir the plastic raw material, so that the plastic raw material is heated evenly, thereby improving the melting efficiency of the plastic raw material.

[0122] When the stirring shaft 20 drives the connecting rod 24 to rotate in the opposite direction, the connecting rod 24 drives the two pulleys 23 to rotate in the opposite direction, and the two pulleys 23 make a curved undulating motion in the slide groove 22, and then the two pulleys 23 drive the connecting rod 24 to rise and fall, and the connecting rod 24 drives the stirring shaft 20 to rise and fall, and the stirring shaft 20 drives the plurality of stirring blades 21 to rise and fall, and the plurality of stirring blades 21 rise and fall during the rotation process, so that the plastic raw materials at different heights can be stirred, thereby further improving the efficiency of melting the plastic raw materials.

[0123] When the stirring shaft 20 drives the second telescopic rod 26 to rotate in the opposite direction, the second telescopic rod 26 drives the two L-shaped plates to rotate in the opposite direction, and the two L-shaped plates drive the plurality of scrapers 28 to rotate in the opposite direction. The plurality of scrapers 28 scrapes off the plastic liquid splashed and attached to the inner wall of the melting tube 4, and scrapes the plastic liquid that continues to adhere to the inner wall of the melting tube 4, to prevent the plastic liquid from becoming black and deteriorating due to continuous heating, thereby affecting the melting quality.

[0124] After the plastic raw material is melted for a period of time, the staff turns off the heater 8 through the controller 29 and opens the electric valve 7 of the discharge port 6. The molten plastic liquid falls into the extrusion barrel 2 through the discharge port 6, and then the molten plastic is extruded from the mold 3 through the extrusion barrel 2. The staff can then start cutting the melted plastic raw material into granules.

[0125] The above embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work shall all fall within the scope of protection of the present invention.

Claims

1. A PPS plastic granulator, characterized in that: It includes four support columns (1), an extrusion cylinder (2), a mold (3), a melting cylinder (4), a feed port (5), a discharge port (6), two electric valves (7), a heater (8), an extraction and purification device, a stirring device, a scraping device, and a controller (29); The extrusion cylinder (2) is transversely arranged above the four support columns (1), and the bottom of the extrusion cylinder (2) is fixedly connected to the top of the four support columns (1) respectively; The die (3) is arranged on the side of the extrusion cylinder (2), opposite to the outlet of the extrusion cylinder (2), and the die (3) is connected to the extrusion cylinder (2); The melting cylinder (4) is vertically arranged on the upper part of the extrusion cylinder (2), the bottom of the melting cylinder (4) is fixedly connected to the top of the extrusion cylinder (2), and is communicated with the extrusion cylinder (2); The feed port (5) is arranged at the top of the melting cylinder (4), one end of the feed port (5) is connected to the melting cylinder (4), and the other end is connected to the outside; The discharge port (6) is arranged at the bottom of the melting cylinder (4), one end of the discharge port (6) is connected to the melting cylinder (4), and the other end is connected to the extrusion cylinder (2); The two electric valves (7) are respectively arranged transversely inside the feed port (5) and the discharge port (6); The heater (8) is disposed around the inner wall of the melting cylinder (4), and the heater (8) is fixedly connected to the melting cylinder (4); The extraction and purification device is arranged on the upper part of the melting cylinder (4), and the extraction and purification device is connected to the melting cylinder (4); The stirring device is arranged inside the melting cylinder (4), and is partially located at the upper part of the melting cylinder (4). The stirring device is connected to the melting cylinder (4) and is connected to the extraction and purification device; The scraping device is arranged inside the melting cylinder (4) and below the stirring device. The scraping device is connected to the melting cylinder (4) and to the stirring device. The controller (29) is arranged on the side of the extrusion tube (2) away from the mold (3), and the controller (29) is fixedly connected to the extrusion tube (2). The controller (29) is electrically connected to the two electric valves (7), the heater (8), and the extraction and purification device respectively.

2. A PPS plastic granulator according to claim 1, characterized in that The extraction and purification device comprises a cylinder body (9), a driving cylinder (10), a piston (11), an air extraction pipe (12), a purification box (13), an exhaust pipe (14), and two one-way valves (15); The cylinder body (9) is arranged transversely above the melting cylinder (4) and is located on the side of the feed port (5), and the bottom of the cylinder body (9) is fixedly connected to the top of the melting cylinder (4); The driving cylinder (10) is arranged inside the cylinder body (9), and is located on the side of the inner wall of the side of the cylinder body (9) close to the feed port (5), and the side of the driving cylinder (10) is fixedly connected to the inner wall of the side of the cylinder body (9); The piston (11) is vertically arranged inside the cylinder body (9) and is located on the side of the driving cylinder (10) away from the feeding port (5). The piston (11) is fixedly connected to the telescopic end of the driving cylinder (10), and the piston (11) is slidably connected to the cylinder body (9) along the inner wall of the cylinder body (9); The exhaust pipe (12) is obliquely arranged at the lower part of the cylinder body (9), and the exhaust pipe (12) passes through the top of the melting barrel (4). One end of the exhaust pipe (12) is connected to the interior of the cylinder body (9), and the other end is connected to the interior of the melting barrel (4); The purification box (13) is arranged above the melting cylinder (4), on the side of the cylinder body (9) away from the feed port (5), and the bottom of the purification box (13) is fixedly connected to the top of the melting cylinder (4); The exhaust pipe (14) is arranged transversely above the melting barrel (4) and between the cylinder body (9) and the purification box (13); one end of the exhaust pipe (14) is connected to the cylinder body (9), and the other end is connected to the purification box (13); The two one-way valves (15) are respectively arranged inside the air extraction pipe (12) and the exhaust pipe (14), and the two one-way valves (15) are respectively fixedly connected to the air extraction pipe (12) and the exhaust pipe (14).

3. A PPS plastic granulator according to claim 2, characterized in that The upper part of the melting tube (4) is provided with an air port, and the air port is provided with a one-way valve capable of ventilating air into the melting tube (4).

4. A PPS plastic granulator according to claim 2, characterized in that : It comprises an exhaust hood (30), which is arranged inside the melting barrel (4), one end of the exhaust hood (30) is connected to the exhaust pipe (12), and the other end is connected to the inside of the melting barrel (4).

5. A PPS plastic granulator according to claim 2, characterized in that The stirring device comprises a cross bar (16), a rack (17), a first telescopic rod (18), a first gear (19), a stirring shaft (20), a plurality of stirring blades (21), a chute (22), two pulleys (23), and a connecting rod (24); The cross bar (16) is transversely arranged on the side of the cylinder body (9) close to the feed port (5), one end of the cross bar (16) is fixedly connected to the piston (11), and the other end of the cross bar (16) passes through the side of the cylinder body (9) and extends outside the cylinder body (9); The rack (17) is transversely arranged on the front side of the cross bar (16), and the rack (17) is fixedly connected to the cross bar (16); The first telescopic rod (18) is vertically arranged on the upper part of the melting cylinder (4), at the center of the melting cylinder (4), the first telescopic rod (18) vertically penetrates the top of the melting cylinder (4), and the first telescopic rod (18) is rotatably connected to the melting cylinder (4); The first gear (19) is transversely arranged above the melting cylinder (4) and sleeved on the outer side of the first telescopic rod (18). The axis of the first gear (19) coincides with the axis of the first telescopic rod (18). The first gear (19) is fixedly connected to the first telescopic rod (18), and the first gear (19) is meshed with the rack (17). The stirring shaft (20) is vertically arranged inside the melting cylinder (4) and below the first telescopic rod (18), the axis of the stirring shaft (20) coincides with the axis of the first telescopic rod (18), and the upper end of the stirring shaft (20) is fixedly connected to the bottom end of the first telescopic rod (18); A plurality of stirring blades (21) are transversely arranged inside the melting cylinder (4), and one end of each of the stirring blades (21) is fixedly connected to the stirring shaft (20); The chute (22) is in an undulating wave shape and is arranged around the upper inner wall of the melting cylinder (4); The two pulleys (23) are vertically symmetrically arranged inside the slide groove (22), and the two pulleys (23) are respectively slidably connected to the slide groove (22) along the slide groove (22); The connecting rod (24) is transversely arranged inside the melting cylinder (4) and is located above the plurality of stirring blades (21). The connecting rod (24) passes through the stirring shaft (20). The connecting rod (24) is fixedly connected to the stirring shaft (20), and the two ends of the connecting rod (24) are respectively rotatably connected to the two pulleys (23).

6. A PPS plastic granulator according to claim 5, characterized in that : The plurality of stirring blades (21) are parallel to each other.

7. A PPS plastic granulator according to claim 5, characterized in that The stirring shaft (20) and the first telescopic rod (18) are fixedly connected by welding.

8. A PPS plastic granulator according to claim 5, characterized in that The scraping device comprises a rotating sleeve (25), a second telescopic rod (26), two L-shaped scrapers (27), and a plurality of scraping hairs (28); The rotating sleeve (25) is vertically arranged inside the melting cylinder (4) and below the stirring shaft (20). The axis of the rotating sleeve (25) coincides with the axis of the stirring shaft (20). The bottom of the rotating sleeve (25) is fixedly connected to the melting cylinder (4). The second telescopic rod (26) is vertically arranged inside the melting cylinder (4) and below the stirring shaft (20). The lower part of the second telescopic rod (26) penetrates into the interior of the rotating sleeve (25). The axis of the second telescopic rod (26) coincides with the axis of the stirring shaft (20). The upper end of the second telescopic rod (26) is fixedly connected to the bottom end of the stirring shaft (20). The lower part of the second telescopic rod (26) is rotatably connected to the rotating sleeve (25). The two L-shaped scrapers (27) are symmetrically arranged inside the melting cylinder (4) and on both sides of the non-telescopic end of the second telescopic rod (26), and one end of the two L-shaped scrapers (27) is respectively fixedly connected to the lower part of the second telescopic rod (26); The plurality of scrapers (28) are arranged inside the melting tube (4), respectively arranged between the two L-shaped scrapers (27) and the inner wall of the melting tube (4); one end of the plurality of scrapers (28) is respectively fixedly connected to the two L-shaped scrapers (27), and the other end is respectively in close contact with the inner wall of the melting tube (4).

9. A PPS plastic granulator according to claim 8, characterized in that The scraper (28) is made of high temperature resistant and corrosion resistant stainless steel.

10. A PPS plastic granulator according to claim 9, characterized in that : A plurality of scraping bristles (28) are evenly distributed on the sides of the two L-shaped scraping plates (27).

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