Blending equipment for high-molecular-weight resin and low-molecular-weight resin and process thereof

Abstract

The invention discloses high molecular weight resin and low molecular weight resin blending equipment and a process thereof, and relates to the field of resin blending equipment.The high molecular weight resin and low molecular weight resin blending equipment comprises an equipment body, a long feeding pipe is installed in the center of the top of the equipment body, a dust removal assembly is installed on the outer wall of the long feeding pipe, and a sieve plate is installed in an inner cavity of the long feeding pipe; a pretreatment barrel is mounted on the left side of the equipment body, crushing rollers are rotationally connected to the two sides of an inner cavity in the top of the pretreatment barrel, a driving assembly is mounted on the outer wall of the pretreatment barrel, a first rotating shaft is rotationally connected into the inner cavity of the equipment body, a mixing roller is mounted on the outer wall of the first rotating shaft, and a scraper assembly is arranged on the left side of the first rotating shaft; an auxiliary scraping plate is rotationally connected into an inner cavity of the scraping plate assembly. According to the blending equipment for the high-molecular-weight resin and the low-molecular-weight resin and the process thereof disclosed by the invention, the equipment can be used for fully pretreating the resin needing to be blended, so that the blending efficiency and quality of the resin can be ensured.

Description

Technical Field

[0001] The invention relates to the field of resin blending equipment, in particular to a blending equipment for high molecular weight resin and low molecular weight resin and a process thereof. Background Art

[0002] High molecular weight resin: refers to a resin with a relatively high molecular weight. Usually, its molecular chain is long and complex, and the interaction between molecular chains is strong. For example, ultra-high molecular weight polyethylene resin has a molecular weight of up to millions. This high molecular weight gives the material excellent mechanical properties, such as high strength, toughness and wear resistance. Low molecular weight resin: The relative molecular mass is low, the molecular chain is short, their fluidity is good, and processing is relatively easy. Taking some low molecular weight polyester resins as an example, due to their short molecular chains, their solubility in solvents is better than that of high molecular weight resins, and they are easier to make into coatings and other products.

[0003] When high molecular weight resin and low molecular weight resin are blended, the blending accuracy will be affected due to their size issues, resulting in the need to process the high molecular weight resin and the low molecular weight resin separately before blending. During the processing, they need to be repeatedly transferred and moved to various processing stations, which seriously affects the overall blending efficiency.

[0004] Therefore, it is necessary to propose a blending device and process for high molecular weight resin and low molecular weight resin to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a blending device and process for high molecular weight resin and low molecular weight resin, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is: A blending device for high molecular weight resin and low molecular weight resin, comprising a device body, a long feed pipe is installed in the middle of the top of the device body, a dust removal component is installed on the outer wall of the long feed pipe, and a sieve plate is installed in the inner cavity of the long feed pipe; A pretreatment barrel is installed on the left side of the equipment body, crushing rollers are rotatably connected to both sides of the top inner cavity of the pretreatment barrel, and a driving component is installed on the outer wall of the pretreatment barrel; A first rotating shaft is rotatably connected in the inner cavity of the equipment body, a mixing roller is installed on the outer wall of the first rotating shaft, a scraper assembly is arranged on the left side of the first rotating shaft, and an auxiliary scraper is rotatably connected in the inner cavity of the scraper assembly.

[0007] Preferably, the sieve plate is inclined, a feed chute is provided on the left side of the inner cavity of the long feed pipe, the top of the dust removal assembly is communicated with the inner cavity of the long feed pipe, an exhaust fan is installed on the side of the dust removal assembly away from the long feed pipe, a filter is installed in the inner cavity of the dust removal assembly, and a collection box is plugged into the bottom of the inner cavity of the dust removal assembly.

[0008] Preferably, a connecting shaft is installed at one end of the exhaust fan close to the long feed pipe, and the connecting shaft is used to drive the exhaust fan. A magnetic roller is installed on the outer wall of the connecting shaft, and the magnetic roller is located in the inner cavity of the long feed pipe.

[0009] Preferably, a belt is installed in the center of the top of the pretreatment barrel, a discharge pipe is installed in the center of the bottom of the pretreatment barrel, the right side of the material receiving pipe is installed on the left side of the long feed pipe, the material receiving pipe is communicated with the inner cavity of the long feed pipe through the discharge trough, and the right side of the discharge pipe is installed on the left side of the equipment body and communicated with its inner cavity.

[0010] Preferably, a belt is installed in the inner cavity of the driving component, pulleys are installed on both sides of the belt inner cavity, the top pulley is installed on the other end of the connecting shaft, and a driving motor is installed on the outer wall of the driving component, and the driving motor is installed on the outer wall of the bottom pulley through a first rotating shaft.

[0011] Preferably, gears are symmetrically installed on both sides of the inner cavity of the pretreatment barrel near one end of the driving assembly, the two gears are meshed with each other, the bottom of the pulley at the bottom is installed on the outer wall of the gear on the left, a screen is installed at the bottom of the inner cavity of the pretreatment barrel, and the crushing roller is installed at the other end of the gear.

[0012] Preferably, a discharge pipe is installed at one end of the equipment body, and a valve is connected to the outer wall flange of the discharge pipe. A servo motor is installed at the other end of the equipment body, and the servo motor is installed on the outer wall of the first rotating shaft through the second rotating shaft.

[0013] Preferably, a connecting seat is installed on the left side of the first rotating shaft, a rotating motor is installed in the inner cavity of the connecting seat, a screw is installed on the left side of the rotating motor through a third rotating shaft, the screw is threadedly connected to the left side of the inner cavity of the connecting seat, the left side of the screw is rotatably connected to the right side of the scraper assembly, guide rods are symmetrically installed on the top and bottom of the right side of the scraper assembly, the guide rods are movably connected in the inner cavity of the connecting seat, and the scraper assembly is attached to the inner wall of the equipment body.

[0014] Preferably, a through groove is opened in the center of the scraper assembly, and a second rotating shaft is rotatably connected in the center of the inner cavity of the through groove. Auxiliary scrapers are symmetrically installed on both sides of the second rotating shaft, and rollers are symmetrically rotatably connected at both ends of the auxiliary scraper away from the second rotating shaft, and the sides of the rollers and the auxiliary scrapers are both attached to the inner wall of the equipment body.

[0015] A process for blending a high molecular weight resin and a low molecular weight resin comprises the following steps: S1: Start the drive motor to drive the belt and pulley. The pulley on the top drives the exhaust fan through the connecting shaft to pour the high molecular weight resin and the low molecular weight resin into the inner cavity of the long feed pipe. When the exhaust fan rotates, the fine dust and debris contained in the high molecular weight resin and the low molecular weight resin are sucked into the inner cavity of the collection box. At the same time, the magnetic roller absorbs the magnetic debris. S2: After the high molecular weight resin and the low molecular weight resin are filtered through the sieve plate, the high molecular weight resin and the low molecular weight resin that meet the size will fall into the inner cavity of the equipment body, and the high molecular weight resin and the low molecular weight resin that do not meet the size will be input into the inner cavity of the pretreatment barrel through the receiving pipe; S3: When the pulley at the bottom rotates, it will drive the gear on the left to rotate. At this time, the two gears can mesh with each other, thereby driving the two crushing rollers to crush the high molecular weight resin and the low molecular weight resin until they are crushed to the size that meets the screen. At this time, the crushed high molecular weight resin and low molecular weight resin can be injected into the inner cavity of the equipment body through the discharge pipe; S4: Start the servo motor so that the first rotating shaft can drive the mixing roller and the scraper assembly to rotate, so as to blend the high molecular weight resin and the low molecular weight resin, start the rotating motor so that the screw rod can be threadedly connected with the connecting seat, and the scraper assembly can move left and right to provide a range and efficiency for blending the high molecular weight resin and the low molecular weight resin; S5: After the blending is completed, the finished product is discharged through the discharge pipe, the scraper assembly is moved to fit the inner wall of the equipment body, and the scraper assembly is rotated. The scraper assembly cooperates with the auxiliary scraper to clean the remaining high molecular weight resin and low molecular weight resin adhering to the inner wall of the equipment body.

[0016] Compared with the prior art, the present invention provides a blending device and process for high molecular weight resin and low molecular weight resin, which has the following beneficial effects: 1. The blending equipment and process of the high molecular weight resin and the low molecular weight resin can screen the size and remove dust of the high molecular weight resin and the low molecular weight resin when they are discharged through the long feeding pipe, and the magnetic impurities contained therein can be adsorbed by the magnetic roller, thereby effectively improving the efficiency of the subsequent blending of the high molecular weight resin and the low molecular weight resin.

[0017] 2. The blending equipment and process of the high molecular weight resin and the low molecular weight resin can drive the connecting shaft and the gear on the left side to rotate through the belt and the pulley by starting the set driving motor. After the connecting shaft rotates, the exhaust fan can be driven to perform dust removal. After the gear on the left rotates, it can mesh with the gear on the right, thereby driving two crushing rollers to crush the high molecular weight resin and the low molecular weight resin, so that they can ensure the same size, which is convenient for improving the efficiency of subsequent blending.

[0018] 3. The blending equipment and process of the high molecular weight resin and the low molecular weight resin can drive the mixing roller and the connecting seat to rotate through the first rotating shaft by starting the set servo motor, and the connecting seat can drive the scraper assembly to rotate through the screw rod. The scraper assembly and the mixing roller can blend the high molecular weight resin and the low molecular weight resin in the inner cavity of the equipment body, and the scraper assembly can adjust the position at the same time, so as to improve the range and efficiency of the blending of the high molecular weight resin and the low molecular weight resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the long feed pipe of the present invention; Figure 3 It is a structural schematic diagram of the pretreatment barrel of the present invention; Figure 4 It is a schematic diagram of the structure of the inner cavity of the device body of the present invention; Figure 5 It is a structural schematic diagram of the scraper assembly of the present invention; Figure 6 The present invention Figure 5 Enlarged view of point A in the middle.

[0020] In the figure: 1. Equipment body; 2. Long feed pipe; 3. Screen plate; 4. Feed chute; 5. Connecting shaft; 6. Magnetic roller; 7. Filter; 8. Exhaust fan; 9. Collecting box; 10. Pretreatment barrel; 11. Driving assembly; 12. Driving motor; 13. Receiving pipe; 14. Belt; 15. Pulley; 16. Gear; 17. Crushing roller; 18. Screen; 19. Feeding pipe; 20. Servo motor; 21. Discharging pipe; 22. First rotating shaft; 23. Mixing roller; 24. Scraper assembly; 25. Screw; 26. Guide rod; 27. Connecting seat; 28. Rotating motor; 29. ​​Through slot; 30. Second rotating shaft; 31. Auxiliary scraper; 32. Roller; 33. Dust removal assembly. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Embodiment 1: like Figure 1-Figure 3 As shown, a blending device for high molecular weight resin and low molecular weight resin comprises a device body 1, a long feed pipe 2 is installed in the middle of the top of the device body 1, a dust removal component 33 is installed on the outer wall of the long feed pipe 2, a sieve plate 3 is installed in the inner cavity of the long feed pipe 2, the sieve plate 3 is inclined, a feed chute 4 is opened on the left side of the inner cavity of the long feed pipe 2, the top of the dust removal component 33 is communicated with the inner cavity of the long feed pipe 2, an exhaust fan 8 is installed on the side of the dust removal component 33 away from the long feed pipe 2, a filter screen 7 is installed in the inner cavity of the dust removal component 33, a collecting box 9 is plugged into the bottom of the inner cavity of the dust removal component 33, a connecting shaft 5 is installed at one end of the exhaust fan 8 close to the long feed pipe 2, the connecting shaft 5 is used to drive the exhaust fan 8, a magnetic roller 6 is installed on the outer wall of the connecting shaft 5, and the magnetic roller 6 is located in the inner cavity of the long feed pipe 2; By setting up the long feed pipe 2, when the high molecular weight resin and the low molecular weight resin are discharged, they can be screened by size and dusted. At the same time, the magnetic impurities contained therein can be adsorbed by the set magnetic roller 6, thereby effectively improving the efficiency of subsequent blending of the high molecular weight resin and the low molecular weight resin.

[0023] Embodiment 2: like Figure 1-Figure 3 As shown, a blending device for high molecular weight resin and low molecular weight resin is provided, a pretreatment barrel 10 is installed on the left side of the device body 1, both sides of the top inner cavity of the pretreatment barrel 10 are rotatably connected with crushing rollers 17, a driving assembly 11 is installed on the outer wall of the pretreatment barrel 10, a belt 14 is installed in the middle of the top of the pretreatment barrel 10, a feeding pipe 19 is installed in the middle of the bottom of the pretreatment barrel 10, the right side of the receiving pipe 13 is installed on the left side of the long feeding pipe 2, the receiving pipe 13 is communicated with the inner cavity of the long feeding pipe 2 through the feeding trough 4, the right side of the feeding pipe 19 is installed on the left side of the device body 1 and communicated with its inner cavity, the driving assembly 11 is installed on the outer wall of the pretreatment barrel 10, a belt 14 is installed in the middle of the top of the pretreatment barrel 10, a feeding pipe 19 is installed in the middle of the bottom of the pretreatment barrel 10, the right side of the receiving pipe 13 is installed on the left side of the long feeding pipe 2, the receiving pipe 13 is communicated with the inner cavity of the long feeding pipe 2 through the feeding trough 4, the right side of the feeding pipe 19 is installed on the left side of the device body 1 and communicated with its inner cavity, A belt 14 is installed in the inner cavity of the component 11, and pulleys 15 are installed on both sides of the inner cavity of the belt 14. The top pulley 15 is installed at the other end of the connecting shaft 5. A driving motor 12 is installed on the outer wall of the driving component 11. The driving motor 12 is installed on the outer wall of the bottom pulley 15 through a first rotating shaft. Gears 16 are symmetrically installed on both sides of the inner cavity of the pretreatment barrel 10 near one end of the driving component 11. The two gears 16 are meshed with each other. The bottom of the bottom pulley 15 is installed on the outer wall of the left gear 16. A screen 18 is installed at the bottom of the inner cavity of the pretreatment barrel 10, and a crushing roller 17 is installed at the other end of the gear 16. By starting the driving motor 12, the connecting shaft 5 and the gear 16 on the left can be driven to rotate through the belt 14 and the pulley 15. After the connecting shaft 5 rotates, the exhaust fan 8 can be driven to perform dust removal. After the gear 16 on the left rotates, it can engage with the gear 16 on the right, thereby driving the two crushing rollers 17 to crush the high molecular weight resin and the low molecular weight resin, so that they can ensure the same size, which is convenient for improving the efficiency of subsequent blending.

[0024] Embodiment three: like Figure 1 , Figure 4 , Figure 5 , Figure 6 As shown, a blending device for high molecular weight resin and low molecular weight resin is provided, wherein a first rotating shaft 22 is rotatably connected in the inner cavity of the device body 1, a mixing roller 23 is installed on the outer wall of the first rotating shaft 22, a scraper assembly 24 is arranged on the left side of the first rotating shaft 22, an auxiliary scraper 31 is rotatably connected in the inner cavity of the scraper assembly 24, a discharge pipe 21 is installed at one end of the device body 1, a valve is connected to the outer wall flange of the discharge pipe 21, a servo motor 20 is installed at the other end of the device body 1, the servo motor 20 is installed on the outer wall of the first rotating shaft 22 through a second rotating shaft, a connecting seat 27 is installed on the left side of the first rotating shaft 22, a rotating motor 28 is installed in the inner cavity of the connecting seat 27, and the left side of the rotating motor 28 is connected through the first rotating shaft 27. The three rotating shafts are equipped with a screw rod 25, which is threadedly connected to the left side of the inner cavity of the connecting seat 27, and the left side of the screw rod 25 is rotatably connected to the right side of the scraper assembly 24. The top and bottom of the right side of the scraper assembly 24 are symmetrically equipped with guide rods 26, which are movably connected in the inner cavity of the connecting seat 27. The scraper assembly 24 fits the inner wall of the equipment body 1, and a through groove 29 is opened in the middle of the scraper assembly 24. The middle of the inner cavity of the through groove 29 is rotatably connected to a second rotating shaft 30, and auxiliary scrapers 31 are symmetrically installed on both sides of the second rotating shaft 30. The two ends of the auxiliary scraper 31 away from the second rotating shaft 30 are symmetrically rotatably connected to rollers 32, and the sides of the rollers 32 and the auxiliary scraper 31 are both fitted to the inner wall of the equipment body 1; By starting the servo motor 20, the mixing roller 23 and the connecting seat 27 can be driven to rotate through the first rotating shaft 22, and the connecting seat 27 can drive the scraper assembly 24 to rotate through the screw 25. The scraper assembly 24 and the mixing roller 23 can blend the high molecular weight resin and the low molecular weight resin in the inner cavity of the equipment body 1. At the same time, the scraper assembly 24 can adjust the position to improve the range and efficiency of blending the high molecular weight resin and the low molecular weight resin.

[0025] A process for blending a high molecular weight resin and a low molecular weight resin comprises the following steps: S1: Start the driving motor 12, drive the belt 14 and the pulley 15, the top pulley 15 drives the exhaust fan 8 through the connecting shaft 5, and pours the high molecular weight resin and the low molecular weight resin into the inner cavity of the long feeding tube 2 together. After the exhaust fan 8 rotates, the fine dust and debris contained in the high molecular weight resin and the low molecular weight resin are sucked into the inner cavity of the collecting box 9, and the magnetic roller 6 absorbs the magnetic debris; S2: After the high molecular weight resin and the low molecular weight resin are filtered through the sieve plate 3, the high molecular weight resin and the low molecular weight resin that meet the size will fall into the inner cavity of the equipment body 1, and the high molecular weight resin and the low molecular weight resin that do not meet the size will be input into the inner cavity of the pretreatment barrel 10 through the receiving pipe 13; S3: The pulley 15 at the bottom rotates and drives the gear 16 on the left to rotate. At this time, the two gears 16 can mesh with each other, thereby driving the two crushing rollers 17 to crush the high molecular weight resin and the low molecular weight resin until they are crushed to the size that meets the screen 18. At this time, the crushed high molecular weight resin and low molecular weight resin can be injected into the inner cavity of the equipment body 1 through the discharge pipe 19; S4: Start the servo motor 20 so that the first rotating shaft 22 can drive the mixing roller 23 and the scraper assembly 24 to rotate, so as to blend the high molecular weight resin and the low molecular weight resin, start the rotary motor 28 so that the screw rod 25 can be threadedly connected with the connecting seat 27, and the scraper assembly 24 can move left and right to provide a range and efficiency for blending the high molecular weight resin and the low molecular weight resin; S5: After the blending is completed, the finished product is discharged through the discharge pipe 21, and the scraper assembly 24 is moved to fit the inner wall of the equipment body 1, and the scraper assembly 24 is rotated. The scraper assembly 24 cooperates with the auxiliary scraper 31 to clean the remaining high molecular weight resin and low molecular weight resin adhering to the inner wall of the equipment body 1.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A blending device for high molecular weight resin and low molecular weight resin, comprising a device body (1), characterized in that: A long feed pipe (2) is installed in the middle of the top of the equipment body (1), a dust removal component (33) is installed on the outer wall of the long feed pipe (2), and a sieve plate (3) is installed in the inner cavity of the long feed pipe (2); A pretreatment barrel (10) is installed on the left side of the equipment body (1), crushing rollers (17) are rotatably connected to both sides of the top inner cavity of the pretreatment barrel (10), and a driving assembly (11) is installed on the outer wall of the pretreatment barrel (10); A first rotating shaft (22) is rotatably connected in the inner cavity of the equipment body (1); a mixing roller (23) is mounted on the outer wall of the first rotating shaft (22); a scraper assembly (24) is arranged on the left side of the first rotating shaft (22); an auxiliary scraper (31) is rotatably connected in the inner cavity of the scraper assembly (24).

2. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: The sieve plate (3) is inclined, a feed chute (4) is provided on the left side of the inner cavity of the long feed pipe (2), the top of the dust removal component (33) is communicated with the inner cavity of the long feed pipe (2), an exhaust fan (8) is installed on the side of the dust removal component (33) away from the long feed pipe (2), a filter screen (7) is installed in the inner cavity of the dust removal component (33), and a collection box (9) is plugged into the bottom of the inner cavity of the dust removal component (33).

3. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A connecting shaft (5) is installed at one end of the exhaust fan (8) close to the long feed pipe (2), and the connecting shaft (5) is used to drive the exhaust fan (8). A magnetic roller (6) is installed on the outer wall of the connecting shaft (5), and the magnetic roller (6) is located in the inner cavity of the long feed pipe (2).

4. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A belt (14) is installed in the middle of the top of the pretreatment barrel (10), a discharge pipe (19) is installed in the middle of the bottom of the pretreatment barrel (10), the right side of the receiving pipe (13) is installed on the left side of the long feed pipe (2), the receiving pipe (13) is connected to the inner cavity of the long feed pipe (2) through the discharge trough (4), and the right side of the discharge pipe (19) is installed on the left side of the equipment body (1) and is connected to its inner cavity.

5. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A belt (14) is installed in the inner cavity of the driving component (11), and pulleys (15) are installed on both sides of the inner cavity of the belt (14), and the top pulley (15) is installed on the other end of the connecting shaft (5). A driving motor (12) is installed on the outer wall of the driving component (11), and the driving motor (12) is installed on the outer wall of the bottom pulley (15) through a first rotating shaft.

6. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 5, characterized in that: Gears (16) are symmetrically mounted on both sides of the inner cavity of the pretreatment barrel (10) near one end of the driving assembly (11), the two gears (16) are meshed with each other, the bottom of the pulley (15) is mounted on the outer wall of the left gear (16), a screen (18) is mounted on the bottom of the inner cavity of the pretreatment barrel (10), and the crushing roller (17) is mounted on the other end of the gear (16).

7. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A discharge pipe (21) is installed at one end of the equipment body (1), and a valve is connected to the outer wall flange of the discharge pipe (21). A servo motor (20) is installed at the other end of the equipment body (1), and the servo motor (20) is installed on the outer wall of the first rotating shaft (22) via a second rotating shaft.

8. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A connecting seat (27) is installed on the left side of the first rotating shaft (22), a rotating motor (28) is installed in the inner cavity of the connecting seat (27), a screw rod (25) is installed on the left side of the rotating motor (28) via a third rotating shaft, the screw rod (25) is threadedly connected to the left side of the inner cavity of the connecting seat (27), the left side of the screw rod (25) is rotatably connected to the right side of the scraper assembly (24), the top and bottom of the right side of the scraper assembly (24) are symmetrically installed with guide rods (26), the guide rods (26) are movably connected in the inner cavity of the connecting seat (27), and the scraper assembly (24) is attached to the inner wall of the equipment body (1).

9. The blending device of a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: A through slot (29) is provided in the middle of the scraper assembly (24); a second rotating shaft (30) is rotatably connected to the middle of the inner cavity of the through slot (29); auxiliary scrapers (31) are symmetrically mounted on both sides of the second rotating shaft (30); rollers (32) are symmetrically rotatably connected to the two ends of the auxiliary scrapers (31) away from the second rotating shaft (30); and the sides of the rollers (32) and the auxiliary scrapers (31) are both attached to the inner wall of the device body (1).

10. The process of a blending device for a high molecular weight resin and a low molecular weight resin according to claim 1, characterized in that: The steps include: S1: Start the driving motor (12), drive the belt (14) and the pulley (15), the top pulley (15) drives the exhaust fan (8) through the connecting shaft (5), and pours the high molecular weight resin and the low molecular weight resin into the inner cavity of the long feed pipe (2). After the exhaust fan (8) rotates, the fine dust and debris contained in the high molecular weight resin and the low molecular weight resin are sucked into the inner cavity of the collection box (9), and the magnetic roller (6) absorbs the magnetic debris; S2: After the high molecular weight resin and the low molecular weight resin are filtered through the sieve plate (3), the high molecular weight resin and the low molecular weight resin that meet the size will fall into the inner cavity of the equipment body (1), and the high molecular weight resin and the low molecular weight resin that do not meet the size will be input into the inner cavity of the pretreatment barrel (10) through the receiving pipe (13); S3: The pulley (15) at the bottom rotates, driving the gear (16) on the left to rotate. At this time, the two gears (16) can mesh with each other, thereby driving the two crushing rollers (17) to crush the high molecular weight resin and the low molecular weight resin until they are crushed to a size that meets the size of the screen (18). At this time, the crushed high molecular weight resin and low molecular weight resin can be injected into the inner cavity of the equipment body (1) through the discharge pipe (19); S4: starting the servo motor (20) so that the first rotating shaft (22) can drive the mixing roller (23) and the scraper assembly (24) to rotate, thereby blending the high molecular weight resin and the low molecular weight resin, starting the rotary motor (28) so that the screw rod (25) can be threadedly connected to the connecting seat (27), and the scraper assembly (24) can move left and right to provide a range and efficiency for blending the high molecular weight resin and the low molecular weight resin; S5: After the blending is completed, the finished product is discharged through the discharge pipe (21), the scraper assembly (24) is moved to fit the inner wall of the equipment body (1), and the scraper assembly (24) is rotated. The scraper assembly (24) cooperates with the auxiliary scraper (31) to clean the remaining high molecular weight resin and low molecular weight resin adhering to the inner wall of the equipment body (1).

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