A high-quality masterbatch extrusion system

Abstract

This invention relates to a high-quality masterbatch extrusion system, comprising a lower frame and an upper frame. An upper frame is equipped with a screw feeding mechanism, and the lower frame is equipped with an extrusion mechanism. The extrusion mechanism includes a body with several heating plates on its inner wall. A main shaft is rotatably connected within the body, with its rear end extending out of the body. The lower frame has a main shaft drive mechanism on its rear side for rotating the main shaft. A feed inlet is located on the side wall near the rear end of the body, and a conveying pipe connected to the screw feeding mechanism is located at the feed inlet. The body contains a rear spiral conveying assembly, a multi-stage crushing assembly, and a front spiral conveying assembly mounted on the main shaft from rear to front. A first extrusion head is located at the front end of the body. A detachable filter assembly is located between the first extrusion head and the front spiral conveying assembly. This invention can effectively disperse and melt the masterbatch raw material, and also effectively prevent impurities from being extruded, thus effectively improving the quality of the masterbatch.

Description

Technical Field

[0001] This invention relates to the field of color masterbatch production equipment technology, and in particular to a high-quality color masterbatch extrusion system. Background Technology

[0002] Color masterbatch is a plastic colorant made by dispersing a high proportion of pigments or additives with thermoplastic resin. The resin used has good wetting and dispersing effects on the colorant and good compatibility with the material being colored.

[0003] The production process of color masterbatch involves the following steps: 1. Mixing various color masterbatch raw materials. 2. Extrusion into an extrusion system. 3. Strip pulling: After exiting the die, the strip is held by hand and moved at a constant speed towards the pelletizer, passing through a blower or desiccant dryer along the way. 4. Cutting and pulling: When the strip reaches the feed inlet of the pelletizer, the pelletizer speed is slowly increased.

[0004] The extrusion of color masterbatch has a significant impact on its quality. In the process of extruding color masterbatch, some raw materials and impurities in the existing extrusion equipment cannot be fully dispersed and melted, resulting in clumping. If these lumps are large, they may block the extrusion equipment, thus hindering the extrusion of the color masterbatch strip. If these lumps and impurities are small, they will be extruded and remain in the extruded color masterbatch strip, thus affecting the quality of the color masterbatch. Summary of the Invention

[0005] This invention proposes a high-quality masterbatch extrusion system that can fully disperse and melt the masterbatch raw materials, preventing them from sticking together. Furthermore, this invention can effectively prevent impurities from being extruded and remaining in the masterbatch strips, thereby effectively improving the quality of the masterbatch and solving the aforementioned problems existing in the use of existing technologies.

[0006] The technical solution of this invention is implemented as follows: A high-quality masterbatch extrusion system includes a lower frame and an upper frame fixed above the lower frame. The upper frame is equipped with a screw feeding mechanism, and the lower frame is equipped with an extrusion mechanism. The extrusion mechanism includes a body, with several heating plates on the inner wall of the body. A main shaft is rotatably connected to the body, with its rear end extending through the body. The lower frame has a main shaft drive mechanism on the rear side of the body for rotating the main shaft. A feed inlet is opened on the side wall near the rear end of the body, and the feed inlet is connected to a screw feeder. The conveying pipe of the structure includes a rear spiral conveying assembly, a multi-stage crushing assembly, and a front spiral conveying assembly mounted on the main shaft from rear to front. A first extruder head is provided at the front end of the machine body. A detachable filter assembly is provided between the first extruder head and the front spiral conveying assembly. A secondary discharge port is provided on the lower side of the machine body between the detachable filter assembly and the front spiral conveying assembly. A second extrusion tube is connected to the lower side of the secondary discharge port. A second extruder head is provided on the second extrusion tube. An opening and closing mechanism is provided between the second extruder head and the secondary discharge port.

[0007] Preferably, the multi-stage mixing assembly includes baffles and spiral mixing cutters. At least one baffle is provided, and the number of spiral mixing cutters is one more than the number of baffles. The spiral mixing cutters and baffles are staggered. Several extrusion ports are provided through the baffles. The spiral mixing cutters are close to the baffles. The baffles are fixedly connected to the machine body. The baffles are rotatably coupled to the main shaft. The spiral mixing cutters are fixedly connected to the main shaft.

[0008] Preferably, there are three baffles, each with a different extrusion opening size. The extrusion opening of the baffle located on the front side gradually decreases compared to that of the baffle located on the rear side. There are four spiral stirring cutters, and the baffles are staggered between two adjacent spiral stirring cutters.

[0009] Preferably, the rear spiral conveying assembly includes a plurality of first spiral auger sleeves fixedly sleeved on the main shaft, and the front spiral conveying assembly includes a plurality of second spiral auger sleeves fixedly sleeved on the main shaft.

[0010] Preferably, the machine body includes a fixed machine body, a fixed half-set, a first movable half-set, and a second movable half-set. The fixed machine body is fixedly connected to the lower frame, and the fixed half-set is fixedly connected to the lower front end of the fixed machine body. The first and second movable half-sets are both located above the fixed half-set. A fixed seat is provided on the rear end of the first movable half-set, and the fixed seat is fixed to the fixed machine body. The rear side of the first movable half-set is rotatably connected to the fixed seat, and the rear side of the second movable half-set is rotatably connected to the front side of the first movable half-set. Lower pressure plates are provided on both the left and right sides of the fixed half-set, and upper pressure plates corresponding to the lower pressure plates are provided on both the left and right sides of the first and second movable half-sets. Several fixing clamps are fixedly connected between the upper and lower pressure plates. The rear screw conveyor assembly is located inside the fixed machine body, the multi-stage crushing assembly and the front screw conveyor assembly are located between the first movable half-set and the fixed half-set, and the detachable filter assembly is located between the second movable half-set and the fixed half-set.

[0011] Preferably, limit blocks are integrally formed on both the left and right sides of the baffle, and the limit blocks are pressed between the upper pressure plate and the lower pressure plate. Sealing rings are provided between the baffle and the front end of the fixed body and between each baffle. The front end of the baffle located at the foremost side is provided with a front extrusion sealing sleeve. The front spiral conveying assembly is located inside the front extrusion sealing sleeve. The auxiliary discharge port passes through the fixed half-sleeve into the front extrusion sealing sleeve. The detachable filter assembly is pressed between the front extrusion sealing sleeve and the first extrusion head.

[0012] Preferably, the detachable filter assembly includes a fixing ring, in which a filter is fixedly connected. The fixing ring has fixing ears on both sides that are pressed between the upper and lower pressure plates. The front ends of the second movable half and the fixed half are each provided with a first flange. A flange baffle is fixedly connected to the first flange, and the flange baffle abuts against the front end of the first extrusion head.

[0013] Preferably, the screw feeding mechanism includes a mixing conveying pipe body, a spiral stirring conveying rod is rotatably connected inside the mixing conveying pipe body, a conveying drive mechanism for driving the spiral stirring conveying rod to rotate is provided on the rear side of the mixing conveying pipe body, and a color masterbatch raw material inlet is opened on the mixing conveying pipe body.

[0014] Preferably, the second extrusion tube is integrally formed on the fixed half sleeve, and the lower end of the second extrusion tube is bent towards the front.

[0015] Preferably, the opening and closing mechanism is a gate valve.

[0016] In summary, the beneficial effects of the present invention are as follows:

[0017] 1. This invention features a rear spiral conveying assembly, a multi-stage crushing assembly, and a front spiral conveying assembly mounted on the main shaft within the machine body. Several heating plates are installed on the inner wall of the machine body. The color masterbatch raw material is mixed and extruded by the rear spiral conveying assembly before being conveyed to the multi-stage crushing assembly. Through multiple crushing processes by the multi-stage crushing assembly, the color masterbatch raw material is effectively dispersed and melted, preventing it from clumping together. It is then mixed and extruded by the front spiral conveying assembly to a detachable filter assembly. The color masterbatch raw material passes through the detachable filter assembly and is extruded through the first extrusion head. The detachable filter assembly effectively prevents impurities from being extruded. The impurities and lumps are extruded into the masterbatch material strip, thereby effectively improving the quality of the masterbatch. In addition, if the removable filter assembly is found to be clogged during the production process, the opening and closing mechanism can be opened to allow the masterbatch raw material to be extruded through the auxiliary discharge port into the second extrusion tube, and then extruded through the second extrusion head. The present invention can also simultaneously extrude through the first extrusion head and the second extrusion head to produce two kinds of masterbatch with slightly different qualities. The masterbatch produced by extrusion through the second extrusion head does not pass through the removable filter assembly and may contain some impurities and lumps, but it can reduce the wear and tear of the removable filter assembly. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention when observed from the rear.

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention when observed from the front.

[0021] Figure 3 This is a top view of the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0023] Figure 5 for Figure 4 A partially enlarged schematic diagram of the front part of the middle body;

[0024] Figure 6 This is a schematic diagram of the structure of the present invention after removing the first movable half-set and the second movable half-set;

[0025] Figure 7 for Figure 6A magnified view of a portion of point A in the middle;

[0026] Figure 8 This is a schematic diagram of the structure of the present invention after removing the first movable half-sleeve, the second movable half-sleeve, the fixed half-sleeve, and the sealing ring;

[0027] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle;

[0028] Figure 10 This is an assembly diagram of the main shaft, the first spiral auger sleeve, the second spiral auger sleeve, the baffle, and the spiral stirring cutter in this invention.

[0029] In the diagram: 1. Lower frame; 2. Upper frame; 3. Machine body; 4. Heating plate; 5. Main shaft; 6. Feed inlet; 7. Conveying pipe; 8. First extruder head; 9. Secondary discharge outlet; 10. Second extrusion tube; 11. Second extruder head; 12. Baffle; 13. Spiral mixing cutter; 14. Extrusion outlet; 15. First spiral auger sleeve; 16. Second spiral auger sleeve; 17. Fixed machine body; 18. Fixed half-set; 19. First movable half-set; 20. Second movable half-set ; 21. Fixed seat; 22. Lower pressure plate; 23. Upper pressure plate; 24. Fixed clamp; 25. Limiting block; 26. Sealing ring; 27. Front extrusion sealing sleeve; 28. Fixed ring; 29. ​​Filter screen; 30. Fixed ear; 31. First flange; 32. Flange baffle; 33. Mixing conveying pipe; 34. Spiral stirring conveying rod; 35. Masterbatch raw material inlet; 36. Gate valve; 37. Preheating electric heating plate; 38. Motor; 39. Reducer; 40. Coupling. Detailed Implementation

[0030] The following will refer to the appendices in the embodiments of the present invention. Figure 1-10 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0031] Example:

[0032] like Figures 1 to 10As shown, this invention discloses a high-quality masterbatch extrusion system, including a lower frame 1 and an upper frame 2 fixed above the lower frame 1. A screw feeding mechanism is provided on the upper frame 2, while an extrusion mechanism is provided on the lower frame 1. The extrusion mechanism includes a body 3, with several heating plates 4 on the inner wall of the body 3. A main shaft 5 is rotatably connected inside the body 3, with its rear end extending out of the body 3. The lower frame 1 has a main shaft drive mechanism on the rear side of the body 3 for driving the main shaft 5 to rotate. A feed inlet 6 is opened on the side wall near the rear end of the body 3, and a conveying pipe 7 connected to the screw feeding mechanism is provided on the feed inlet 6. A rear spiral conveyor, arranged from rear to front, is fitted onto the main shaft 5 inside the body 3. The machine body 3 includes a feeding assembly, a multi-stage crushing assembly, and a front screw conveyor assembly. A first extruder head 8 is located at the front end of the machine body 3. A detachable filter assembly is located between the first extruder head 8 and the front screw conveyor assembly. This detachable filter assembly can be used to filter out impurities and lumps from the molten masterbatch raw material. Additionally, a secondary discharge port 9 is located on the lower side of the machine body 3 between the detachable filter assembly and the front screw conveyor assembly. A second extrusion pipe 10 is connected to the lower side of the secondary discharge port 9. A second extruder head 11 is located on the second extrusion pipe 10. An opening and closing mechanism, specifically a gate valve 36, is located between the second extruder head 11 and the secondary discharge port 9.

[0033] like Figure 5 , Figure 8 , Figure 9 as well as Figure 10 As shown, the multi-stage mixing assembly includes baffles 12 and spiral mixing cutters 13. There are three baffles 12, and one more spiral mixing cutter 13 than baffles 12. The baffles 12 are staggered between two adjacent spiral mixing cutters 13, meaning that there are spiral mixing cutters 13 on both the front and rear sides of each baffle 12. The spiral mixing cutters 13 are close to the baffles 12. The baffles 12 are fixedly connected to the machine body 3 and are rotatably fitted onto the main shaft 5. The spiral mixing cutters 13 are fixedly connected to the main shaft 5. That is, when the main shaft 5 rotates, the spiral mixing cutters 13 will rotate with the main shaft 5, but the baffles 12 will not rotate. In addition, several extrusion ports 14 are opened through the baffles 12. The size of the extrusion ports 14 of each baffle 12 is different. The extrusion ports 14 of the baffles 12 on the front side are gradually smaller than those of the baffles 12 on the rear side.

[0034] In addition, such as Figure 4 , Figure 5 as well as Figure 10 As shown, the rear spiral conveying assembly includes several first spiral auger sleeves 15 fixedly sleeved on the main shaft 5, while the front spiral conveying assembly includes several second spiral auger sleeves 16 fixedly sleeved on the main shaft 5.

[0035] In operation, the color masterbatch raw material is fed into the screw feeding mechanism, which uniformly conveys the raw material into the extrusion mechanism's body 3. The inner wall of the body 3 is heated by an electric heating plate 4. The main shaft drive mechanism rotates the main shaft 5, which in turn drives the first spiral auger sleeve 15, the second spiral auger sleeve 16, and the spiral stirring cutter 13 to rotate synchronously. The first spiral auger sleeve 15 mixes and extrudes the color masterbatch raw material before conveying it to the multi-stage crushing assembly. At this point, the color masterbatch raw material is subjected to extrusion and heating conditions. The raw material is molten and continuously agitated and cut by the spiral agitator cutter 13. It then passes through the extrusion port 14 of the baffle 12 and is extruded. The raw material is again agitated and cut by the spiral agitator cutter 13 as it passes through the three increasingly smaller extrusion ports 14. This process of extrusion, compaction, and immediate cutting and re-aggregation of the raw material effectively eliminates lumps within the molten raw material, ensuring the raw material is properly processed. The raw material is thoroughly mixed to improve the quality of the masterbatch. After passing through the extrusion port 14 of the last baffle 12 and being stirred and cut by the spiral stirring cutter 13, it enters the second spiral auger sleeve 16. The second spiral auger sleeve 16 extrudes and conveys the raw material to the detachable filter assembly. The raw material passes through the detachable filter assembly to the first extrusion head 8 for extrusion. The detachable filter assembly can effectively prevent impurities and lumps from being extruded and existing in the masterbatch strip, thereby effectively improving the quality of the masterbatch. In addition, if the detachable filter assembly is found to be blocked during the production process, the gate valve 36 can be opened to allow the raw material to be extruded through the auxiliary discharge port 9 to the second extrusion tube 10, and then extruded through the second extrusion head 11. The present invention can also simultaneously extrude through the first extrusion head 8 and the second extrusion head 11 to produce two types of masterbatch with slightly different qualities. The masterbatch produced by extrusion through the second extrusion head 11 does not pass through the detachable filter assembly and may contain some impurities and lumps, but it can reduce the wear and tear on the detachable filter assembly.

[0036] like Figures 1 to 7As shown, the main body 3 specifically includes a fixed main body 17, a fixed half-arm 18, a first movable half-arm 19, and a second movable half-arm 20. The fixed main body 17 is fixedly connected to the lower frame 1, while the fixed half-arm 18 is fixedly connected to the lower front end of the fixed main body 17. The first movable half-arm 19 and the second movable half-arm 20 are both located on the upper side of the fixed half-arm 18. A fixed seat 21 is provided on the rear end of the first movable half-arm 19, and the fixed seat 21 is fixed to the fixed main body 17. The rear side of the first movable half-arm 19 is rotatably connected to the fixed seat 21, while the rear side of the second movable half-arm 20 is rotatably connected to the front side of the first movable half-arm 19. That is to say, the second movable half-arm 20 can rotate up and down relative to the first movable half-arm 19, and the first movable half-arm 19 can rotate up and down relative to the fixed seat 21. When the first movable half-set 19 and the second movable half-set 20 are moved together, the second movable half-set 20 is moved together. The left and right sides of the fixed half-set 18 are provided with lower pressure plates 22, and the left and right sides of the first movable half-set 19 and the second movable half-set 20 are provided with upper pressure plates 23 corresponding to the lower pressure plates 22. Several fixing clamps 24 are fixedly connected between the upper pressure plates 23 and the lower pressure plates 22. The fixing clamps 24 are used to fix the first movable half-set 19 and the second movable half-set 20 on the fixed half-set 18. The rear screw conveyor assembly is located inside the fixed body 17, while the multi-stage crushing assembly and the front screw conveyor assembly are located between the first movable half-set 19 and the fixed half-set 18. The detachable filter assembly is located between the second movable half-set 20 and the fixed half-set 18. The first movable half-set 19 and the second movable half-set 20 can be flipped mainly to facilitate the maintenance of the multi-stage crushing assembly and the detachable filter assembly.

[0037] Furthermore, such as Figures 5 to 7As shown, limit blocks 25 are integrally formed on both the left and right sides of the baffle 12. These limit blocks 25 are pressed between the upper pressure plate 23 and the lower pressure plate 22, thereby fixing the baffle 12. Sealing rings 26 are provided between the baffle 12 and the front end of the fixed body 17, as well as between each baffle 12. The front end of the foremost baffle 12 is provided with a front extrusion sealing sleeve 27. The front spiral conveying assembly is located inside the front extrusion sealing sleeve 27. The auxiliary discharge port 9 passes through the fixed half-sleeve 18 into the front extrusion sealing sleeve 27. The detachable filter assembly is pressed between the front extrusion sealing sleeve 27 and the first extruder head 8. More specifically, the detachable filter assembly includes a fixing ring 28, in which a filter is fixedly connected. The screen 29 and the fixing ring 28 are provided with fixing ears 30 on both sides, which are pressed between the upper pressure plate 23 and the lower pressure plate 22. The front end of the second movable half-sleeve 20 and the fixed half-sleeve 18 are provided with a first flange 31. A flange baffle 32 is fixedly connected to the first flange 31 and abuts against the front end of the first extrusion head 8. The above structure is reasonably set. The cooperation between each sealing ring 26 and the baffle 12 and the setting of the front extrusion sealing sleeve 27 prevent the color masterbatch raw material from leaking out. When disassembling the detachable filter screen assembly, the flange baffle 32 can be removed first, and then the fixing clamp 24 can be removed. At this time, the second movable half-sleeve 20 can be rotated upward, and then the first extrusion head 8 and the detachable filter screen assembly can be removed.

[0038] The heating plate 4 is installed in both the fixed body 17 and the front extrusion sealing sleeve 27. The heating plate 4 is used in most existing extruders, so its specific installation and operation will not be described in detail here.

[0039] In this invention, the screw feeding mechanism includes a mixing and conveying pipe body 33, a spiral stirring and conveying rod 34 rotatably connected inside the mixing and conveying pipe body 33, a conveying drive mechanism for driving the spiral stirring and conveying rod 34 to rotate on the rear side of the mixing and conveying pipe body 33, a color masterbatch raw material inlet 35 is opened on the mixing and conveying pipe body 33, and a preheating electric heating plate 37 is also provided inside the mixing and conveying pipe body 33. The preheating electric heating plate 37 is used to preheat the raw materials entering the mixing and conveying pipe body 33.

[0040] like Figure 1 and Figure 4 As shown, both the main shaft drive mechanism and the conveying drive mechanism include a motor 38 and a reducer 39. The motor 38 and the reducer 39 are connected by a transmission. The main shaft 5 and the spiral stirring conveying rod 34 are both connected to the output shaft of the reducer 39 through a coupling 40.

[0041] In this invention, the second extrusion tube 10 is integrally formed on the fixed half-sleeve 18, and the lower end of the second extrusion tube 10 is bent towards the front, which makes it easier for the extruded strip to be pulled forward, thereby facilitating the subsequent pelletizing work.

[0042] It should also be noted that the terms used in this invention, such as "front," "rear," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high quality color masterbatch extrusion system comprising a lower frame and an upper frame fixed above the lower frame, characterized in that: The upper frame is equipped with a screw feeding mechanism, and the lower frame is equipped with an extrusion mechanism. The extrusion mechanism includes a body, with several heating plates on the inner wall of the body. A main shaft is rotatably connected to the body, with its rear end extending out of the body. The lower frame has a main shaft drive mechanism on the rear side of the body for rotating the main shaft. The body has a feed inlet on the side wall near the rear end, and a conveying pipe connected to the screw feeding mechanism is provided on the feed inlet. The body has a rear spiral conveying assembly, a multi-stage crushing assembly, and a front spiral conveying assembly mounted on the main shaft from rear to front. A first extrusion head is provided at the front end of the body. A removable filter assembly is provided between the first extrusion head and the front spiral conveying assembly. The lower part of the body between the removable filter assembly and the front spiral conveying assembly... A secondary discharge port is provided on the side. A second extrusion tube is connected to the lower side of the secondary discharge port on the machine body. The second extrusion tube is provided with a second extrusion head. An opening and closing mechanism is provided between the second extrusion head and the secondary discharge port. The multi-stage crushing assembly includes baffles and spiral stirring cutters. There are three baffles, and each baffle has several extrusion openings. The size of the extrusion openings of each baffle is different. The extrusion openings of the baffles on the front side gradually decrease in size compared to those on the baffles on the rear side. There are four spiral stirring cutters. The baffles are staggered between two adjacent spiral stirring cutters. The spiral stirring cutters are close to the baffles. The baffles are fixedly connected to the machine body and are rotatably fitted on the main shaft. The spiral stirring cutters are fixedly connected to the main shaft.

2. A high quality masterbatch extrusion system as claimed in claim 1, characterized in that: The rear spiral conveying assembly includes several first spiral auger sleeves fixedly sleeved on the main shaft, and the front spiral conveying assembly includes several second spiral auger sleeves fixedly sleeved on the main shaft.

3. A high quality masterbatch extrusion system as claimed in claim 1, wherein: The machine body includes a fixed body, a fixed half-set, a first movable half-set, and a second movable half-set. The fixed body is fixedly connected to the lower frame. The fixed half-set is fixedly connected to the lower front end of the fixed body. The first and second movable half-sets are both located above the fixed half-set. A fixed seat is provided at the rear end of the first movable half-set, and the fixed seat is fixed to the fixed body. The rear side of the first movable half-set is rotatably connected to the fixed seat, and the rear side of the second movable half-set is rotatably connected to the front side of the first movable half-set. Lower pressure plates are provided on both the left and right sides of the fixed half-set. Upper pressure plates corresponding to the lower pressure plates are provided on both the left and right sides of the first and second movable half-sets. Several fixing clamps are fixedly connected between the upper and lower pressure plates. The rear screw conveyor assembly is located inside the fixed body. The multi-stage crushing assembly and the front screw conveyor assembly are located between the first movable half-set and the fixed half-set. The detachable filter assembly is located between the second movable half-set and the fixed half-set.

4. The high-quality masterbatch extrusion system according to claim 3, characterized in that: Limiting blocks are integrally formed on both the left and right sides of the baffle. The limiting blocks are pressed between the upper and lower pressure plates. Sealing rings are provided between the baffle and the front end of the fixed body, as well as between each baffle. A front extrusion sealing sleeve is provided at the front end of the baffle at the foremost side. The front spiral conveying assembly is located inside the front extrusion sealing sleeve. The auxiliary discharge port passes through the fixed half-sleeve into the front extrusion sealing sleeve. The detachable filter assembly is pressed between the front extrusion sealing sleeve and the first extrusion head.

5. The high-quality masterbatch extrusion system according to claim 4, characterized in that: The detachable filter assembly includes a fixing ring, in which a filter is fixedly connected. Fixing ears are provided on both sides of the fixing ring and pressed between the upper and lower pressure plates. A first flange is provided on the front end of both the second movable half and the fixed half. A flange baffle is fixedly connected to the first flange and abuts against the front end of the first extrusion head.

6. The high-quality masterbatch extrusion system according to claim 1, characterized in that: The screw feeding mechanism includes a mixing conveying pipe body, a spiral stirring conveying rod is rotatably connected inside the mixing conveying pipe body, a conveying drive mechanism for driving the spiral stirring conveying rod to rotate is provided on the rear side of the mixing conveying pipe body, and a color masterbatch raw material inlet is opened on the mixing conveying pipe body.

7. The high-quality masterbatch extrusion system according to claim 3, characterized in that: The second extrusion tube is integrally formed on the fixed half sleeve, and the lower end of the second extrusion tube is bent towards the front.

8. The high-quality masterbatch extrusion system according to claim 1, characterized in that: The opening and closing mechanism is a gate valve.

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