A special production system for modified polypropylene resin

Abstract

The application discloses the technical field of modified polypropylene resin production, in particular to a special production system of modified polypropylene resin, which comprises a placing device placed on the ground and capable of placing the molten polypropylene resin, and an isolation device installed at the inner lower end of the placing device and capable of dividing and separating the molten polypropylene resin in cooperation with the placing device. The application can quantitatively input the additive and directly insert the additive into the periphery of the polypropylene resin, uniformly mix a small amount of polypropylene resin and additive, prevent the additive from not being mixed with the polypropylene resin due to one-time input, and realize the division of the polypropylene resin, so that the small amount of polypropylene resin and additive can be more fully mixed.

Description

Technical Field

[0001] This invention relates to the field of modified polypropylene resin production technology, specifically to a dedicated production system for modified polypropylene resin. Background Technology

[0002] Modified polypropylene resin is a thermoplastic resin obtained by polymerizing propylene. Its properties are improved and optimized through modification, resulting in a variety of excellent characteristics, such as high strength and stiffness, good heat resistance, chemical resistance, weather resistance, and processability. It can be processed into products of various shapes and sizes using blow molding, injection molding, and extrusion, making it widely used in injection molding, blow molding, and extrusion molding. The applications of modified polypropylene resin are extensive, including the production of various types of daily necessities, food packaging, medical devices, automotive parts, and household goods, as well as building materials. Its excellent mechanical and heat resistance properties make it important in high-end fields such as automotive parts, electronic equipment, and solar panels.

[0003] Existing modified polypropylene resin production requires obtaining polypropylene resin and necessary modifying additives, such as fillers, stabilizers, and compatibilizers. These materials should be stored in a designated area and accurately measured and weighed according to the required formulation. The polypropylene resin and additives are then mixed and stirred using a mixer or extruder. The polypropylene resin is melted, and then the additives are gradually added. The mixture is subsequently stirred or kneaded to ensure uniform distribution of the additives in the resin. However, due to the large-scale production of modified polypropylene resin and the mixing of large quantities of polypropylene resin with additives, the high viscosity of the melted polypropylene resin means that even with increased mixing time and speed, a small amount of dispersant may not be completely and uniformly distributed, leaving a small amount of dispersant in the final product and potentially causing environmental pollution. Therefore, we propose a dedicated production system for modified polypropylene resin. Summary of the Invention

[0004] In view of the problems existing in the above and / or existing specialized production systems for modified polypropylene resins, the present invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a dedicated production system for modified polypropylene resin. By combining a placement device and an isolation device, the molten polypropylene resin can be separated into multiple smaller portions. Furthermore, through the continuous cooperation of the placement device, the isolation device, and the injection and stirring device, the separated polypropylene resin can be polymerized again, thus solving the aforementioned existing problems.

[0006] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A dedicated production system for modified polypropylene resin, comprising:

[0008] The system comprises: a placement device, placed on the ground, for placing molten polypropylene resin; an isolation device, installed at the lower part of the placement device, for portioning and separating the molten polypropylene resin in conjunction with the placement device; a sealing and stirring device, installed on top of the placement device, for sealing the polypropylene resin inside the placement device and driving the injection and stirring device to rotate; and an injection and stirring device, installed at the bottom of the sealing and stirring device, for metering and adding various additives, and for inserting its bottom into the periphery of the separated polypropylene resin, while stirring and mixing the injected polypropylene resin. Furthermore, the combination of the sealing and stirring device and the injection and stirring device allows for continuous separation and polymerization of the polypropylene resin, thus enabling intermittent operation of separation, stirring, and polymerization stirring.

[0009] The device is characterized by comprising: a placement plate placed on the ground; a receiving component installed on the top outer side of the placement plate, which supports and lifts the sealing and stirring device; a first receiving component installed on the top of the placement plate, positioned inside the receiving component, with a gap between the receiving component and the receiving component, which continuously heats the separated polypropylene resin; a separating component installed on the top of the placement plate, positioned inside the first receiving component, with a gap between the separating component and the first receiving component, which limits and guides the lifting and rotation of the isolation device; and a second receiving component installed at the top center of the placement plate, with a gap between the second receiving component and the separating component, which drives the lifting and rotation of the isolation device.

[0010] The storage assembly includes: a storage bucket installed on the top outer end of the placement plate; an outer ring installed in the middle of the outer wall of the storage bucket; and a telescopic rod with its bottom installed around the surface of the outer ring, with the output end of the telescopic rod contacting the bottom of the isolation device. The telescopic rod can drive the sealing and stirring device to move up and down. The first receiving assembly includes: a receiving plate installed on the top of the placement plate, positioned inside the storage bucket. The receiving plate, in cooperation with the storage bucket, can limit and guide the movement of the outer assembly of the isolation device. The separating component includes: a separating plate, which is installed on the top of the placement plate and positioned inside the receiving plate; the second receiving component includes: a base plate, which is installed at the top center of the placement plate; a support rod, which is installed around the top of the base plate; and a heating plate, which has a support groove at its bottom and is slidably connected to the top of the support rod. The bottom center of the heating plate is connected to the drive end of a rotary motor, and the support rod supports and guides the rotation of the heating plate. The rotary motor drives the heating plate to rotate.

[0011] The isolation device includes: a first isolation component, which is slidably connected between the storage bucket and the receiving tray, and can lift and cut the molten polypropylene resin so that the cut polypropylene resin falls onto the surface of the receiving tray; a second isolation component, which is slidably connected between the receiving tray and the separating tray, and whose outer wall is slidably connected to the inner wall of the first isolation component, and whose lifting and lowering can drive the first isolation component to lift and lower, and whose cooperation with the first isolation component can separate and block the cut polypropylene resin; and a lifting and cutting component, which is connected between the separating tray and the heating plate, and whose outer wall is connected to the inner wall of the second isolation component, and whose lifting and cutting component can be driven by a rotary motor to lift, lower and rotate, thereby causing the lifting and cutting component to lift and lower the second isolation component and the first isolation component, and causing the second isolation component to rotate with the rotation of the lifting and cutting component, thereby rotating and cutting the molten polypropylene resin;

[0012] The sealing and stirring device includes: a sealing assembly installed on top of the storage bucket, with its bottom connected to the top of a telescopic rod. Driven by the telescopic rod, the sealing assembly can be raised and lowered. The connection between the sealing assembly and the storage bucket seals the interior space of the storage bucket. A stirring drive assembly installed on top of the sealing assembly, with its bottom penetrating through the sealing assembly and connecting to the top of the stirring assembly. Driven by the stirring drive assembly, the stirring assembly can be rotated. A stirring assembly rotatably connected to the bottom of the sealing assembly, with its top engaging with the drive end of the stirring drive assembly. The stirring assembly drives the injection and stirring device to rotate, thereby causing the injection and stirring device to rotate and stir the polymerized polypropylene resin.

[0013] The sealing assembly includes: a sealing plate, which is placed on top of the storage bucket and, through its connection with the storage bucket, seals the space inside the storage bucket; a support groove, which is located on the bottom outer side of the sealing plate and contacts the top of the telescopic rod; a suspension rotating groove, which is located on the bottom inner side of the sealing plate and limits and guides the rotation of the stirring assembly; and a first through groove, which is located on the top left end of the sealing plate.

[0014] The stirring drive assembly includes: a stirring drive motor, which is mounted on the top left end of the sealing plate; and a stirring drive gear, which is connected to the output end of the stirring drive motor and has its lower end pass through the first through groove until the bottom of the stirring drive gear is connected to the top of the stirring assembly.

[0015] The stirring assembly includes: a stirring turntable with a suspension ring on its top, which is slidably connected inside a suspension groove. The rotation of the stirring turntable is limited and guided by the engagement of the suspension ring and the suspension groove; a mounting groove is provided around the surface and center of the stirring turntable, through which an injection and stirring device can be installed; and a first tooth groove is provided on the top of the stirring turntable, which meshes with the bottom of a stirring drive gear. The engagement of the stirring drive gear with the first tooth groove enables the stirring drive gear to drive the stirring turntable to rotate.

[0016] In a preferred embodiment of the specialized production system for modified polypropylene resin according to the present invention, the first receiving component further includes:

[0017] A heating box is installed at the bottom of the receiving plate, connecting the bottom of the receiving plate to the top of the placement plate. The heating box can heat the receiving plate, allowing the surface of the receiving plate to be continuously heated by the molten polypropylene resin.

[0018] The separation component also includes:

[0019] The chute is located around the outer wall of the separator plate;

[0020] The first rotating groove is disposed on the upper end of the outer wall of the partition plate, and the sliding groove is connected to the first rotating groove;

[0021] The second receiving component also includes:

[0022] A support plate, which is installed at the top center of the base plate;

[0023] A rotary motor is installed inside a receiving plate, which allows for the installation and placement of the rotary motor.

[0024] The drive rod is installed at both ends of the outer wall of the heating plate and is connected to the isolation device. The rotation of the heating plate can drive the drive rod to rotate on the inner wall of the isolation device, thereby driving the isolation device to lift and rotate.

[0025] In a preferred embodiment of the specialized production system for modified polypropylene resin according to the present invention, the first isolation component comprises:

[0026] An outer ring plate is slidably connected between the storage bin and the receiving tray;

[0027] The isolation vertical plate is installed around the inner wall of the isolation outer ring plate and is slidably connected to the gap between the receiving plates.

[0028] The vertical plate slicer is set on top of the isolation vertical plate, and the polypropylene resin to be separated can be cut by raising and lowering the vertical plate slicer.

[0029] A rotating block is disposed on the inner wall of the isolation vertical plate and is slidably connected to the outer wall of the second isolation assembly;

[0030] The second isolation component includes:

[0031] The inner isolation ring plate is slidably connected between the receiving plate and the separating plate, and the upper end of the inner wall of the inner isolation ring plate is connected to the upper end of the outer wall of the lifting and cutting assembly.

[0032] The second rotating groove is set on the upper end of the outer wall of the inner ring plate of the isolation plate, and the rotating block is slidably connected inside the second rotating groove. Through the cooperation of the second rotating groove and the rotating block, the outer ring plate and the vertical plate of the isolation plate can be raised and lowered by the raising and lowering of the inner ring plate of the isolation plate.

[0033] The inner ring slice is set on top of the inner ring plate, and the polypropylene resin to be separated can be rotated and cut by rotating the inner ring slice.

[0034] The slider is located at the lower end of the inner wall of the inner ring plate and is slidably connected to the inside of the slide groove and the first rotating groove. Through the cooperation of the slider, the slide groove and the first rotating groove, the lifting and rotation of the inner ring plate can be limited and guided.

[0035] The lifting and cutting assembly includes:

[0036] The lifting cutting ring plate is connected between the separator plate and the heating plate;

[0037] The cutting blade is located on top of the lifting cutting ring plate, and the rotation of the lifting cutting ring plate enables the cutting blade to rotate and cut the separated polypropylene resin.

[0038] The double threaded groove is set on the inner wall of the lifting cutting ring plate, and the drive rod is slidably connected inside the double threaded groove. By rotating the heating plate and the drive rod, the drive rod can rotate inside the double threaded groove, so that the drive rod can perform the operation of lifting and rotating the lifting cutting ring plate first.

[0039] In a preferred embodiment of the specialized production system for modified polypropylene resin according to the present invention, the injection and agitation device includes:

[0040] The mounting component is installed inside the mounting slot and can limit and guide the rotation of the rotating component.

[0041] An injection component is installed on top of the mounting component and can intermittently introduce additives into the rotating component, allowing the additives to enter the interior of the rotating component in a metered manner.

[0042] A drive motor is mounted on the surface of the mounting component and is connected to the rotating end of the mounting component, thereby causing the drive motor to drive the rotating end of the mounting component to rotate.

[0043] The rotating component is rotatably connected to the bottom of the mounting component. It can be inserted into the polypropylene resin from all sides, allowing the additive to be directly inserted into the interior of the polypropylene resin. The rotation of a single unit of the rotating component can rotate and stir the separated molten polypropylene resin and the additive. At the same time, the overall rotation of the rotating component can uniformly stir and mix the polymerized polypropylene resin.

[0044] In a preferred embodiment of the specialized production system for modified polypropylene resin according to the present invention, the installation components include:

[0045] The mounting sleeve is installed inside the mounting slot;

[0046] The second through groove is provided around the outer wall of the mounting cylinder;

[0047] The limiting gear is rotatably connected to the inner wall of the mounting cylinder, and one end of the limiting gear passes through the second through slot. At the same time, the limiting gear is set in several groups, and one group of limiting gears is connected to the output end of the drive motor. The limiting gear can support, limit, and drive the rotation of the rotating component.

[0048] A cover plate, which is installed on top of the mounting cylinder;

[0049] The injection component includes:

[0050] A bracket, which is installed on top of the cover plate;

[0051] An injection cylinder is installed inside a support frame, and various additives can be dispensed into the injection cylinder.

[0052] An injection valve tube is connected to the bottom of the injection cylinder, and the bottom of the injection valve tube contacts the top of the rotating assembly.

[0053] In a preferred embodiment of the specialized production system for modified polypropylene resin according to the present invention, the rotating assembly comprises:

[0054] The rotating disk has a limiting ring at its top, which is rotatably connected to the groove at the bottom of the cover plate. The limiting ring can suspend and limit the rotation of the rotating disk.

[0055] The second tooth groove is located around the outer wall of the rotating disk and meshes with the limiting gear. Through the cooperation between the limiting gear and the second tooth groove, the rotating disk can be clamped. At the same time, the rotation of the limiting gear can drive the rotating disk to rotate.

[0056] An injection tank is located on top of a rotating disk, and as the disk rotates, the injection valve pipe rotates to the top of the injection tank, causing the additive to fall out.

[0057] A metering tube is installed at the bottom of the rotating disk and connects to the injection tank. The metering tube can also guide the falling additives.

[0058] The insert block is installed at the bottom of the metering tube and can be inserted into the interior of the polypropylene resin by means of the telescopic rod. At the same time, the insert block can directly inject additives into the interior of the polypropylene resin, and the polypropylene resin can be stirred and mixed by means of the metering tube and the insert block.

[0059] A sealing groove is located on the outer wall of the metering cannula;

[0060] The metering disc is slidably connected inside the sealing groove and slidably connected inside the metering tube. The metering disc consists of a pressure sensor and a rotary valve, which can block and bear the weight of falling additives and dispense a fixed amount of additives.

[0061] The sealing strip is connected at one end to the top of the metering disc and at the other end to the top of the sealing groove. Both ends of the sealing strip are slidably connected to the inner walls of the sealing groove. The sealing strip can block the falling additives, prevent the additives from entering the surface of the polypropylene resin through the sealing groove, and can also provide tough stretching for the metering disc to withstand the downward pressure.

[0062] Compared with existing technologies:

[0063] By combining the placement device and the isolation device, the molten polypropylene resin can be separated into multiple small portions. Then, through the driving of the sealing and stirring device and the injection and stirring device, the separated multiple small portions of polypropylene resin can be stirred and mixed. At the same time, through the continuous cooperation of the placement device, the isolation device and the injection and stirring device, the separated polypropylene resin can be polymerized again. The polypropylene resin is continuously separated and polymerized during the stirring process, thereby achieving the desired polypropylene resin content and ensuring that a small amount of polypropylene resin and additives can be more fully mixed.

[0064] By cooperating with the telescopic rod of the injection and stirring device and the placement device, the additive can be quantitatively added and directly inserted into the interior of the polypropylene resin. This allows for small-scale and uniform mixing of a small amount of polypropylene resin and the additive, preventing the additive from being difficult to mix with the polypropylene resin due to partial addition. Furthermore, the overall rotation of the injection and stirring device can stir the polymerized polypropylene resin as a whole, enabling the injection and stirring device to mix polypropylene resin in different states at different times. Attached Figure Description

[0065] Figure 1 This is a schematic diagram of the overall main view structure provided by the present invention;

[0066] Figure 2 This is a schematic diagram of the overall main view split structure provided by the present invention;

[0067] Figure 3 This is a schematic diagram of the main view of the placement device provided by the present invention.

[0068] Figure 4 This is a schematic diagram of the separator component structure provided by the present invention;

[0069] Figure 5 This is a schematic diagram of the disassembled structure of the second receiving component provided by the present invention;

[0070] Figure 6 This is a bottom view of the second receiving component provided by the present invention;

[0071] Figure 7 This is a schematic diagram of the connection structure between the isolation device and the placement device provided by the present invention;

[0072] Figure 8 This is a schematic diagram of the disassembled structure of the isolation device provided by the present invention;

[0073] Figure 9 This is a schematic diagram of the lifting and cutting assembly structure provided by the present invention;

[0074] Figure 10 This is a schematic diagram of the second isolation component structure provided by the present invention;

[0075] Figure 11 This is a schematic diagram of the first isolation component structure provided by the present invention;

[0076] Figure 12 This is a schematic diagram of the disassembled structure of the sealing and stirring device provided by the present invention;

[0077] Figure 13 A bottom view of the sealing assembly provided by the present invention;

[0078] Figure 14 This is a schematic diagram of the disassembled structure of the injection and stirring device provided by the present invention;

[0079] Figure 15 This is a schematic diagram of the rotating component structure provided by the present invention;

[0080] Figure 16 This is a schematic diagram of the split structure of the metering disc provided by the present invention.

[0081] In the picture:

[0082] Placement device 1, Placement plate 11, Storage assembly 12, Storage bucket 121, Outer ring 122, Telescopic rod 123, First receiving assembly 13, Receiving plate 131, Heating box 132, Separating assembly 14, Separating plate 141, Slide groove 142, First rotating groove 143, Second receiving assembly 15, Base plate 151, Receiving plate 152, Support rod 153, Rotary motor 154, Heating plate 155, Drive rod 156, Support groove 157, Isolation device 2, First isolation assembly 21, Isolation outer ring plate 211, Isolation vertical plate 212, Vertical plate slice 213, Rotating block 214, Second isolation assembly 22, Isolation inner ring plate 221, Second rotating groove 222, Inner ring slice 223, Slider 224, Lifting and cutting assembly 23, Lifting and cutting ring plate 231, Cutting blade 232, Double threaded groove 233. Sealing and stirring device 3. Sealing assembly 31. Sealing plate 311. Support groove 312. Suspension rotating groove 313. First through groove 314. Stirring drive assembly 32. Stirring drive motor 321. Stirring drive gear 322. Stirring assembly 33. Stirring turntable 331. Suspension ring 332. Mounting groove 333. First tooth groove 334. Injection and stirring device 4. Mounting assembly 41. Mounting cylinder 411. Second through groove 412. Limiting gear 413. Cover plate 414. Injection assembly 42. Bracket 421. Injection cylinder 422. Injection valve pipe 423. Drive motor 43. Rotating assembly 44. Rotating disk 441. Limiting ring 442. Second tooth groove 443. Injection groove 444. Metering tube 445. Insert block 446. Sealing groove 447. Metering plate 448. Sealing toughness strip 449. Detailed Implementation

[0083] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0084] This invention provides a dedicated production system for modified polypropylene resin. Please refer to [link / reference]. Figure 1-16 It includes a placement device 1, an isolation device 2, a sealing and stirring device 3, and an injection and agitation device 4;

[0085] A placement device 1 is placed on the ground and is used to place molten polypropylene resin. The placement device 1 includes: a placement plate 11, a storage assembly 12, a storage bucket 121, an outer ring 122, a telescopic rod 123, a first receiving assembly 13, a receiving plate 131, a heating box 132, a separating assembly 14, a separating plate 141, a chute 142, a first rotating groove 143, a second receiving assembly 15, a base plate 151, a receiving plate 152, a support rod 153, a rotary motor 154, a heating plate 155, a drive rod 156, and a support groove 157. The placement plate 11 is placed on the ground, and the storage assembly 12 is installed on the top outer side of the placement plate 11 and supports the sealing and stirring device 3. The system includes a support and lifting mechanism, a storage bucket 121 installed on the top outer side of the placement plate 11, an outer ring 122 installed in the middle of the outer wall of the storage bucket 121, a telescopic rod 123 with its bottom installed around the surface of the outer ring 122, and its output end in contact with the bottom of the isolation device 2. The telescopic rod 123 drives the sealing and stirring device 3 to lift and lower. A first receiving assembly 13 is installed on the top of the placement plate 11 and positioned inside the storage assembly 12, with a gap between the first receiving assembly 13 and the storage assembly 12. The first receiving assembly 13 allows for continuous heating of the separated polypropylene resin. A receiving tray 131 is installed on the placement plate. The top of the placement plate 11 is provided with a receiving tray 131 positioned inside the storage bucket 121. The receiving tray 131, in conjunction with the storage bucket 121, limits and guides the lifting and lowering of the outer components of the isolation device 2. A heating box 132 is installed at the bottom of the receiving tray 131, connecting the bottom of the receiving tray 131 to the top of the placement plate 11. The heating box 132 heats the receiving tray 131, continuously heating its surface with the molten polypropylene resin. A separating component 14 is installed on top of the placement plate 11, positioned inside the first receiving component 13, with a gap between the separating component 14 and the first receiving component 13. The separating component 14 allows for the control of the lifting and lowering of the outer components of the isolation device 2. The lifting and rotation of the isolation device 2 are limited and guided by the following components: a separator plate 141, which is installed on top of the placement plate 11 and positioned inside the receiving plate 131; a sliding groove 142, which is located around the outer wall of the separator plate 141; a first rotating groove 143, which is located at the upper end of the outer wall of the separator plate 141 and connects the sliding groove 142 with the first rotating groove 143; a second receiving assembly 15, which is installed at the top center of the placement plate 11 and has a gap between it and the separator assembly 14, and can drive the lifting and rotation of the isolation device 2 through the second receiving assembly 15; a base plate 151, which is installed at the top center of the placement plate 11; a receiving plate 152, which is installed at the top center of the base plate 151; and a support rod 153.The heating plate 155 is mounted around the top of the base plate 151. A rotary motor 154 is installed inside a receiving plate 152, which allows for its installation and placement. A heating plate 155 has a support groove 157 at its bottom, with the inside of the groove 157 slidably connected to the top of a support rod 153. The bottom center of the heating plate 155 is connected to the drive end of the rotary motor 154, and the support rod 153 supports and guides the rotation of the heating plate 155. The rotary motor 154 drives the heating plate 155 to rotate. A drive rod 156 is mounted at both ends of the outer wall of the heating plate 155 and connected to the isolation device 2. The rotation of the heating plate 155 causes the drive rod 156 to rotate within the inner wall of the isolation device 2, thus enabling the isolation device 2 to move up, down, and rotate.

[0086] The isolation device 2 is installed inside the lower end of the placement device 1. Through the cooperation of the placement device 1 and the isolation device 2, the molten polypropylene resin can be divided and separated. The isolation device 2 includes: a first isolation component 21, an outer isolation ring plate 211, an isolation vertical plate 212, a vertical plate slice 213, a rotating block 214, a second isolation component 22, an inner isolation ring plate 221, a second rotating groove 222, an inner ring slice 223, a slider 224, a lifting and cutting component 23, a lifting and cutting ring plate 231, a cutting blade 232, and a double threaded groove 233. The first isolation component 21 is slidably connected between the storage bucket 121 and the receiving plate 131, and the first isolation component 21 can lift and cut the molten polypropylene resin, so that the cutting... The polypropylene resin then falls onto the surface of the receiving tray 131. An outer isolation ring plate 211 is slidably connected between the storage bucket 121 and the receiving tray 131. An isolation vertical plate 212 is installed around the inner wall of the outer isolation ring plate 211 and slidably connected to the gap between the receiving trays 131. A vertical plate slice 213 is positioned at the top of the isolation vertical plate 212, and its lifting and lowering action can cut the polypropylene resin to be separated. A rotating block 214 is positioned on the inner wall of the isolation vertical plate 212 and slidably connected to the outer wall of the second isolation component 22. The second isolation component 22 is slidably connected between the receiving tray 131 and the separating tray 141, and its movement... The outer wall is slidably connected to the inner wall of the first isolation component 21, and the lifting and lowering of the second isolation component 22 can drive the first isolation component 21 to lift and lower. Simultaneously, the cooperation between the second isolation component 22 and the first isolation component 21 can separate and block the cut polypropylene resin. The inner isolation ring plate 221 is slidably connected between the receiving plate 131 and the separating plate 141, and the upper end of the inner wall of the inner isolation ring plate 221 is connected to the upper end of the outer wall of the lifting and cutting component 23. The second rotating groove 222 is disposed on the upper end of the outer wall of the inner isolation ring plate 221, and the rotating block 214 is slidably connected inside the second rotating groove 222. The cooperation between the second rotating groove 222 and the rotating block 214 allows the lifting and lowering of the inner isolation ring plate 221 to... The system can drive the outer isolation ring plate 211 and the vertical isolation plate 212 to perform lifting and lowering operations. The inner ring slice 223 is set on the top of the inner isolation ring plate 221, and the rotation of the inner ring slice 223 can rotate and cut the polypropylene resin to be separated. The slider 224 is set at the lower end of the inner wall of the inner isolation ring plate 221, and the slider 224 is slidably connected inside the slide groove 142 and the first rotating groove 143. Through the cooperation of the slider 224 with the slide groove 142 and the first rotating groove 143, the lifting and lowering and rotation of the inner isolation ring plate 221 can be limited and guided. The lifting and cutting assembly 23 is connected between the separating plate 141 and the heating plate 155, and the outer wall of the lifting and cutting assembly 23 is connected to the inner wall of the second isolation assembly 22.Driven by the rotary motor 154, the lifting and cutting assembly 23 can be raised, lowered, and rotated. This causes the lifting and cutting assembly 23 to raise and lower the second isolation assembly 22 and the first isolation assembly 21, and the second isolation assembly 22 rotates along with the lifting and cutting assembly 23, thus performing rotary cutting on the molten polypropylene resin. The lifting and cutting ring plate 231 is connected between the separator plate 141 and the heating plate 155. The cutting blade 232 is located on top of the lifting and cutting ring plate 231, and its rotation allows it to rotary cut the separated polypropylene resin. The double threaded groove 233 is located on the inner wall of the lifting and cutting ring plate 231, and the drive rod 156 is slidably connected inside the double threaded groove 233. Rotation of the heating plate 155 and the drive rod 156 causes the drive rod 156 to rotate within the double threaded groove 233, thus allowing the drive rod 156 to perform a lifting and then rotating operation on the lifting and cutting ring plate 231.

[0087] A sealing and stirring device 3 is installed on top of the placement device 1. Through its cooperation with the placement device 1, the sealing and stirring device 3 seals the polypropylene resin inside the placement device 1. Simultaneously, the sealing and stirring device 3 drives the injection and stirring device 4 to rotate. The sealing and stirring device 3 includes: a sealing assembly 31, a sealing plate 311, a support groove 312, a suspension rotating groove 313, a first through groove 314, a stirring drive assembly 32, a stirring drive motor 321, a stirring drive gear 322, a stirring assembly 33, a stirring turntable 331, a suspension ring 332, a mounting groove 333, and a first toothed groove 334. The sealing assembly 31 is installed on top of the storage tank 121, and its bottom is aligned with the telescopic rod 12. The top of the container 3 is connected, and driven by the telescopic rod 123, the sealing assembly 31 can be raised and lowered. Simultaneously, the connection between the sealing assembly 31 and the storage container 121 seals the internal space of the storage container 121, thus preventing dust splashing during mixing. The sealing plate 311 is placed on top of the storage container 121, and its connection to the storage container 121 seals the internal space of the storage container 121, preventing dust splashing during mixing. The support groove 312 is located on the bottom outer side of the sealing plate 311, and contacts the top of the telescopic rod 123. The suspension groove 313 is located on the bottom inner side of the sealing plate 311, and is suspended... The rotating groove 313 can limit and guide the rotation of the stirring assembly 33. The first through groove 314 is located at the top left end of the sealing plate 311. The stirring drive assembly 32 is installed on top of the sealing assembly 31, with its bottom passing through the sealing assembly 31 and connecting to the top of the stirring assembly 33. Driven by the stirring drive assembly 32, the stirring assembly 33 can be rotated. The stirring drive motor 321 is installed at the top left end of the sealing plate 311. The stirring drive gear 322 is connected to the output end of the stirring drive motor 321, with its lower end passing through the first through groove 314 until its bottom connects to the top of the stirring assembly 33. Component 33 is rotatably connected to the bottom of sealing assembly 31, and the top of stirring assembly 33 is engaged with the drive end of stirring drive assembly 32. Stirring assembly 33 drives injection and agitation device 4 to rotate, thereby agitating the polymerized polypropylene resin. Stirring turntable 331 has a suspension ring 332 on its top, which is slidably connected inside suspension groove 313. The cooperation between suspension ring 332 and suspension groove 313 limits and guides the rotation of stirring turntable 331. Mounting groove 333 is located around the surface and center of stirring turntable 331, and the injection and agitation device 4 can be mounted through the mounting groove 333. First toothed groove 334…It is positioned on top of the stirring disc 331, and the first toothed groove 334 meshes with the bottom of the stirring drive gear 322. Through the engagement of the stirring drive gear 322 and the first toothed groove 334, the stirring drive gear 322 drives the stirring disc 331 to rotate.

[0088] The injection and stirring device 4 is installed at the bottom of the sealing and stirring device 3. It can meter and add various additives, and its bottom is inserted around the perimeter of the separated polypropylene resin. Simultaneously, it can stir and mix the injected polypropylene resin. Through the cooperation of the sealing and stirring device 3 and the injection and stirring device 4, the polypropylene resin can be continuously separated and polymerized, thus enabling intermittent operation of separation stirring and polymerization stirring of the polypropylene resin. The injection and stirring device 4 includes: an installation assembly 41, an installation cylinder 411, a second through groove 412, a limiting gear 413, a cover plate 414, an injection assembly 42, a bracket 421, an injection cylinder 422, and an injection... The system includes an inlet valve pipe 423, a drive motor 43, a rotating assembly 44, a rotating disk 441, a limiting ring 442, a second toothed groove 443, an injection groove 444, a metering tube 445, an insert block 446, a sealing groove 447, a metering disk 448, and a sealing toughness strip 449. An installation assembly 41 is installed inside the installation groove 333 and limits and guides the rotation of the rotating assembly 44. An installation cylinder 411 is installed inside the installation groove 333. A second through groove 412 is located around the outer wall of the installation cylinder 411. A limiting gear 413 is rotatably connected to the inner wall of the installation cylinder 411, with one end of the limiting gear 413 passing through the second through groove 412. Several limiting gears 413 are provided. The assembly consists of a set of limiting gears 413 connected to the output end of the drive motor 43, which support, limit, and drive the rotation of the rotating component 44. A cover plate 414 is mounted on top of the mounting cylinder 411. An injection component 42 is mounted on top of the mounting assembly 41 and intermittently introduces additives into the rotating component 44, allowing a precise amount of additives to enter the interior of the rotating component 44. A bracket 421 is mounted on top of the cover plate 414. An injection cylinder 422 is mounted inside the bracket 421 and allows for the dispensing of various additives. An injection valve pipe 423 is connected to the bottom of the injection cylinder 422 and allows the injection valve pipe 423 to... The bottom of the rotating assembly 44 contacts the top of the mounting assembly 41. A drive motor 43, mounted on the surface of the mounting assembly 41 and connected to the rotating end of the mounting assembly 41, drives the rotating end of the mounting assembly 41 to rotate. The rotating assembly 44 is rotatably connected to the bottom of the mounting assembly 41 and can be inserted into the polypropylene resin from all sides, allowing the additive to directly penetrate the polypropylene resin. The individual rotation of the rotating assembly 44 can rotate and stir the separated molten polypropylene resin and additives. Simultaneously, the overall rotation of the rotating assembly 44 can uniformly stir and mix the polymerized polypropylene resin. The rotating disk 441 has a limiting ring 442 at its top.The limiting ring 442 is rotatably connected to the groove at the bottom of the cover plate 414, and the limiting ring 442 can suspend and limit the rotation of the rotating disk 441. The second tooth groove 443 is set around the outer wall of the rotating disk 441, and the second tooth groove 443 meshes with the limiting gear 413. Through the cooperation of the limiting gear 413 and the second tooth groove 443, the rotating disk 441 can be clamped. At the same time, the rotation of the limiting gear 413 can drive the rotating disk 441 to rotate. Injection groove 4 44, which is located on top of the rotating disk 441, and during the rotation of the rotating disk 441, it can rotate the injection valve pipe 423 to the top of the injection tank 444, causing the additive to fall. The metering tube 445 is installed at the bottom of the rotating disk 441 and communicates with the injection tank 444. The metering tube 445 can guide the falling additive. The insert 446 is installed at the bottom of the metering tube 445, and can be driven by the telescopic rod 123 to move the insert 446. 6. An insert 446 is inserted into the interior of the polymerized and separated polypropylene resin. Simultaneously, an insert block 446 allows additives to be directly injected into the interior of the polypropylene resin. The metering tube 445 and insert block 446 can stir and mix the polypropylene resin. A sealing groove 447 is located on the outer wall of the metering tube 445. A metering disc 448 is slidably connected inside the sealing groove 447 and also slidably connected inside the metering tube 445. The metering disc 448 consists of a pressure sensor and a rotary valve, which can block falling additives and deliver a measured amount of additives. A sealing toughness strip 449 is connected at one end to the top of the metering disc 448 and at the other end to the top of the sealing groove 447. Both ends of the sealing toughness strip 449 are slidably connected to the inner walls of the sealing groove 447. The sealing toughness strip 449 can block falling additives, preventing them from entering the surface of the polypropylene resin through the sealing groove 447, and can provide toughness stretching to prevent the metering disc 448 from sliding under load.

[0089] In practical use, those skilled in the art place the molten polypropylene resin into the storage tank 121. By activating the telescopic rod 123, the telescopic rod 123 causes the sealing plate 311 to descend and contact the storage tank 121. At this time, the metering tube 445 and the insert 446 are inserted into the polypropylene resin. By activating the stirring drive assembly 32, the stirring drive assembly 32 drives the stirring turntable 331 and the injection and stirring device 4 to rotate as a whole, so that the polypropylene resin is evenly distributed on the receiving plate 131 and the separating plate 141. The surface of the heating plate 155 is heated by the heating box 132 and the heating plate 155 to prevent the molten polypropylene resin from cooling and solidifying. The rotary motor 154 is started, causing the heating plate 155 and the drive rod 156 to rotate. This causes the drive rod 156 to drive the lifting cutting ring plate 231 to rise and fall first. At this time, the inner isolation ring plate 221, the outer isolation ring plate 211, and the vertical isolation plate 212 rise and fall with the lifting cutting ring plate 231. When the drive rod 156 moves to the end of the double threaded groove 233, the drive rod 156 will drive... The rotating lifting cutting ring plate 231 causes the inner isolation ring plate 221, the outer isolation ring plate 211, and the vertical isolation plate 212 to rotate accordingly. This causes the vertical plate slice 213, the inner ring slice 223, and the cutting blade 232 to cut the polypropylene resin, resulting in a uniform distribution of the polypropylene resin on the surfaces of the receiving plate 131 and the heating plate 155. At this time, the additive is added into the injection cylinder 422, and the drive motor 43 is started, causing the rotating disk 441 to rotate. The injection cylinder 422 then quantitatively adds the additive into the metering tube 445. Inside, the metering tube 445 and the insert block 446 directly inject the additive into the periphery of the separated polypropylene resin. At the same time, the rotation of the metering tube 445 and the insert block 446 drives the separated polypropylene resin to rotate and stir, so that the separated polypropylene resin and the additive are mixed. Through the rising and falling of the isolation device 2, in conjunction with the overall rotation of the injection and stirring device 4 and the rotation of the single rotating component 44, the polypropylene resin can be separated, stirred, mixed and polymerized, thereby ensuring that the polypropylene resin and the additive are fully mixed.

[0090] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A special production system for modifying polypropylene resin, comprising: a placing device (1) placed on the ground and capable of placing the molten polypropylene resin through the placing device (1); an isolating device (2) installed at the lower end inside the placing device (1), and capable of dividing and separating the molten polypropylene resin through the cooperation of the placing device (1) and the isolating device (2); a sealing and stirring device (3) installed at the top of the placing device (1), and capable of sealing the polypropylene resin inside the placing device (1) through the cooperation of the sealing and stirring device (3) and the placing device (1), and capable of rotating and driving the injection and stirring device (4) through the sealing and stirring device (3); an injection and stirring device (4) installed at the bottom of the sealing and stirring device (3), and capable of metering and feeding various additives, and capable of inserting the bottom of the injection and stirring device (4) into the inside of the separated polypropylene resin, and capable of stirring the injected polypropylene resin, and capable of continuously separating and polymerizing the polypropylene resin through the cooperation of the sealing and stirring device (3) and the injection and stirring device (4), thereby performing intermittent operation of separating and stirring and polymerizing and stirring the polypropylene resin; characterized in that the placing device (1) comprises: a placing plate (11) placed on the ground; a storage assembly (12) installed at the top outside of the placing plate (11), and capable of supporting and lifting the sealing and stirring device (3) through the storage assembly (12); a first receiving assembly (13) installed at the top of the placing plate (11), and arranged inside the storage assembly (12), and having a gap between the first receiving assembly (13) and the storage assembly (12), and capable of continuously heating the separated polypropylene resin through the first receiving assembly (13); a separating assembly (14) installed at the top of the placing plate (11), and arranged inside the first receiving assembly (13), and having a gap between the separating assembly (14) and the first receiving assembly (13), and capable of limiting and guiding the lifting and rotation of the isolating device (2) through the separating assembly (14); and a second receiving assembly (15) installed at the top center of the placing plate (11), and having a gap between the second receiving assembly (15) and the separating assembly (14), and capable of driving the lifting and rotation of the isolating device (2) through the second receiving assembly (15). The storage assembly (12) comprises a storage barrel (121) installed at the top outer side end of the placing plate (11), an external ring (122) installed at the middle position of the outer wall of the storage barrel (121), and a telescopic rod (123) installed at the bottom of the surface of the external ring (122), with the output end of the telescopic rod (123) in contact with the bottom of the isolation device (2), and the telescopic rod (123) capable of driving the sealing and stirring device (3) to ascend and descend by driving the telescopic rod (123); the first receiving assembly (13) comprises a receiving disc (131) installed at the top of the placing plate (11) and arranged inside the storage barrel (121), and capable of limiting and guiding the ascending and descending of the outer side assembly of the isolation device (2) by cooperating the receiving disc (131) with the storage barrel (121); the separation assembly (14) comprises a separation disc (141) installed at the top of the placing plate (11) and arranged inside the receiving disc (131); the second receiving assembly (15) comprises a bottom plate (151) installed at the top center of the placing plate (11), a supporting rod (153) installed at the top of the bottom plate (151), and a heating plate (155) provided with a supporting groove (157) at the bottom, with the inside of the supporting groove (157) in sliding connection with the top of the supporting rod (153), and the bottom center of the heating plate (155) connected with the driving end of the rotary motor (154), and the supporting rod (153) capable of supporting and guiding the rotation of the heating plate (155), and the rotary motor (154) capable of driving the heating plate (155) to rotate by driving the rotary motor (154); The isolation device (2) comprises: a first isolation assembly (21) which is slidingly connected between the receiving barrel (121) and the receiving disc (131), and through which the molten polypropylene resin can be cut and lifted to fall onto the surface of the receiving disc (131); a second isolation assembly (22) which is slidingly connected between the receiving disc (131) and the separation disc (141), and the outer wall of the second isolation assembly (22) is slidingly connected with the inner wall of the first isolation assembly (21), and through the lifting of the second isolation assembly (22), the first isolation assembly (21) can be lifted, and through the cooperation of the second isolation assembly (22) and the first isolation assembly (21), the cut polypropylene resin can be separated and blocked; a lifting and cutting assembly (23) which is connected between the separation disc (141) and the heating plate (155), and the outer wall of the lifting and cutting assembly (23) is connected with the inner wall of the second isolation assembly (22), and through the driving of the rotating motor (154), the lifting and cutting assembly (23) can be lifted and rotated, so that the lifting and cutting assembly (23) drives the second isolation assembly (22) and the first isolation assembly (21) to lift, and the second isolation assembly (22) rotates with the rotation of the lifting and cutting assembly (23), so that the molten polypropylene resin is cut and rotated; The sealing and stirring device (3) comprises: a sealing assembly (31) which is installed at the top of the receiving barrel (121), and the bottom of the sealing assembly (31) is connected with the top of the telescopic rod (123), and through the driving of the telescopic rod (123), the sealing assembly (31) can be lifted and operated, and the connection of the sealing assembly (31) and the receiving barrel (121) can seal the space inside the receiving barrel (121); a stirring driving assembly (32) which is installed at the top of the sealing assembly (31), and the bottom of the stirring driving assembly (32) penetrates the sealing assembly (31) and is connected with the top of the stirring assembly (33), and through the driving of the stirring driving assembly (32), the stirring assembly (33) can be driven to rotate; a stirring assembly (33) which is rotatably connected at the bottom of the sealing assembly (31), and the top of the stirring assembly (33) is meshingly connected with the driving end of the stirring driving assembly (32), and through the stirring assembly (33), the injection and stirring device (4) can be rotated, so that the injection and stirring device (4) rotates and stirs the polymerized polypropylene resin; The sealing assembly (31) comprises: a sealing plate (311) placed on the top of the receiving barrel (121), and the space inside the receiving barrel (121) can be sealed through the connection between the sealing plate (311) and the receiving barrel (121); a supporting groove is arranged on the outer side of the bottom of the sealing plate (311) and is in contact with the top of the telescopic rod (123); a hanging rotating groove (313) is arranged on the inner side of the bottom of the sealing plate (311), and the rotation of the stirring assembly (33) can be limited and guided through the hanging rotating groove (313); a first through groove (314) is arranged on the top left end of the sealing plate (311); The stirring driving assembly (32) comprises: a stirring driving motor (321) installed on the top left end of the sealing plate (311); a stirring driving gear (322) connected to the output end of the stirring driving motor (321), and the lower end of the stirring driving gear (322) penetrates through the first through groove (314) until the bottom of the stirring driving gear (322) is connected with the top of the stirring assembly (33); The stirring assembly (33) comprises: a stirring turntable (331) provided with a hanging ring (332) on the top, and the hanging ring (332) is slidably connected in the inside of the hanging rotating groove (313), and the rotation of the stirring turntable (331) can be limited and guided through the cooperation of the hanging ring (332) and the hanging rotating groove (313); a mounting groove (333) is arranged around the surface and the center of the stirring turntable (331), and the injection and stirring device (4) can be mounted through the mounting groove (333); a first tooth groove (334) is arranged on the top of the stirring turntable (331), and the first tooth groove (334) is meshedly connected with the bottom of the stirring driving gear (322), and the stirring driving gear (322) can drive the stirring turntable (331) to rotate through the cooperation of the stirring driving gear (322) and the first tooth groove (334).

2. The special production system of the modified polypropylene resin according to claim 1, characterized in that, The first receiving assembly (13) further comprises: A heating box (132) is installed on the bottom of the receiving disc (131), and the bottom of the receiving disc (131) is connected with the top of the placing plate (11), and the receiving disc (131) can be heated through the heating box (132), so that the surface of the receiving disc (131) can continuously heat the molten polypropylene resin; The separation assembly (14) further comprises: A sliding groove (142) is arranged around the outer wall of the separation disc (141); A first rotating groove (143) is arranged on the outer wall of the separation disc (141), and the sliding groove (142) is in communication with the first rotating groove (143); The second receiving assembly (15) further comprises: A receiving plate (152) is installed on the top center of the bottom plate (151); A rotating motor (154) is installed in the inside of the receiving plate (152), and the rotating motor (154) can be installed and placed through the receiving plate (152); A driving rod (156) is installed at both ends of the outer wall of the heating plate (155), and the driving rod (156) is connected with the isolation device (2), and the driving rod (156) can be driven to rotate on the inner wall of the isolation device (2) through the rotation of the heating plate (155), so that the driving rod (156) drives the isolation device (2) to ascend and rotate.

3. The special production system of the modified polypropylene resin according to claim 2, characterized in that, The first isolation assembly (21) comprises: An isolation outer ring plate (211) is slidingly connected between the receiving barrel (121) and the receiving disc (131); An isolation vertical plate (212) is installed around the inner wall of the isolation outer ring plate (211) and is slidingly connected in the gap between the receiving disc (131); A vertical plate slice (213) is arranged at the top of the isolation vertical plate (212), and the vertical plate slice (213) can be used to cut and separate the polypropylene resin by lifting; A rotating block (214) is arranged on the inner wall of the isolation vertical plate (212) and is slidingly connected to the outer wall of the second isolation assembly (22); The second isolation assembly (22) comprises: An isolation inner ring plate (221) is slidingly connected between the receiving disc (131) and the separation disc (141), and the inner wall upper end of the isolation inner ring plate (221) is connected with the outer wall upper end of the lifting and cutting assembly (23); A second rotating groove (222) is arranged on the outer wall upper end of the isolation inner ring plate (221), and the rotating block (214) is slidingly connected in the second rotating groove (222), and through the cooperation of the second rotating groove (222) and the rotating block (214), the isolation outer ring plate (211) and the isolation vertical plate (212) can be lifted by lifting the isolation inner ring plate (221); An inner ring slice (223) is arranged at the top of the isolation inner ring plate (221), and the inner ring slice (223) can be used to cut and separate the polypropylene resin by rotating; A sliding block (224) is arranged at the inner wall lower end of the isolation inner ring plate (221) and is slidingly connected in the sliding groove (142) and the first rotating groove (143), and through the cooperation of the sliding block (224) and the sliding groove (142) and the first rotating groove (143), the lifting and rotation of the isolation inner ring plate (221) can be limited and guided; The lifting and cutting assembly (23) comprises: A lifting and cutting ring plate (231) is connected between the separation disc (141) and the heating plate (155); A cutting piece (232) is arranged at the top of the lifting and cutting ring plate (231), and the cutting piece (232) can be used to cut and separate the polypropylene resin by rotating the lifting and cutting ring plate (231); Double thread grooves (233) are arranged on the inner wall of the lifting cutting ring plate (231), and the driving rod (156) is slidingly connected inside the double thread grooves (233), and through the rotation of the heating plate (155) and the driving rod (156), the driving rod (156) can rotate inside the double thread grooves (233), so that the driving rod (156) can operate the lifting cutting ring plate (231) by lifting first and then rotating.

4. The special production system of the modified polypropylene resin according to claim 3, characterized in that, The injection and stirring device (4) comprises: The mounting assembly (41) is mounted inside the mounting groove (333), and the rotation of the rotating assembly (44) can be limited and guided through the mounting assembly (41); The injection assembly (42) is mounted on the top of the mounting assembly (41), and the rotating assembly (44) can be intermittently introduced through the injection assembly (42) to add additives, so that the additives can be quantitatively introduced into the inside of the rotating assembly (44); The driving motor (43) is mounted on the surface of the mounting assembly (41), and the rotating end of the mounting assembly (41) is connected through the driving motor (43), so that the driving motor (43) drives the rotating end of the mounting assembly (41) to rotate; The rotating assembly (44) is rotatably connected to the bottom of the mounting assembly (41), and the polypropylene resin can be inserted from all around through the rotating assembly (44), so that the additives can be directly inserted into the inside of the polypropylene resin, and through the single rotation of the rotating assembly (44), the separated molten polypropylene resin and additives can be rotated and stirred, and through the overall rotation of the rotating assembly (44), the polymerized polypropylene resin can be uniformly stirred and mixed.

5. The special production system of the modified polypropylene resin according to claim 4, characterized in that, The mounting assembly (41) comprises: The mounting cylinder (411) is mounted inside the mounting groove (333); The second through groove (412) is arranged around the outer wall of the mounting cylinder (411); The limiting gear (413) is rotatably connected around the inner wall of the mounting cylinder (411), one end of the limiting gear (413) penetrates through the second through groove (412), and the limiting gear (413) is arranged in several groups, one group of the limiting gear (413) is connected with the output end of the driving motor (43), and the rotating assembly (44) can be supported, rotationally limited and rotationally driven through the limiting gear (413); The cover plate (414) is mounted on the top of the mounting cylinder (411); The injection assembly (42) comprises: The bracket (421) is mounted on the top of the cover plate (414); The injection cylinder (422) is mounted inside the bracket (421), and the inside of the injection cylinder (422) can put various additives; The injection valve pipe (423) is connected to the bottom of the injection cylinder (422), and the bottom of the injection valve pipe (423) is in contact with the top of the rotating assembly (44).

6. The special production system of a modified polypropylene resin according to claim 5, characterized in that, The rotating assembly (44) comprises: The rotating disc (441) is provided with a limiting ring (442) on the top, the limiting ring (442) is rotatably connected inside the groove at the bottom of the cover plate (414), and the rotating disc (441) can be suspended and rotationally limited through the limiting ring (442); The second tooth groove (443) is arranged around the outer wall of the rotating disc (441) and is in meshing connection with the limiting gear (413). Through the cooperation of the limiting gear (413) and the second tooth groove (443), the rotating disc (441) can be clamped, and the rotation of the limiting gear (413) can drive the rotating disc (441) to rotate; The injection groove (444) is arranged at the top of the rotating disc (441), and in the rotating process of the rotating disc (441), the injection valve pipe (423) can be rotated to the top of the injection groove (444), so that the additive falls; The metering insertion tube (445) is installed at the bottom of the rotating disc (441) and is in communication with the injection groove (444), and the additive falling can be guided through the metering insertion tube (445); The insertion block (446) is installed at the bottom of the metering insertion tube (445) and can be inserted into the polypropylene resin through the driving of the telescopic rod (123), so that the additive can be directly injected into the polypropylene resin through the insertion block (446), and the polypropylene resin can be stirred and mixed through the metering insertion tube (445) and the insertion block (446); The sealing groove (447) is arranged on the outer wall of the metering insertion tube (445); The metering disc (448) is slidingly connected in the sealing groove (447) and is slidingly connected in the metering insertion tube (445), and the metering disc (448) is composed of a pressure sensor and a rotating valve, which can block and support the falling additive and release a certain amount of additive; One end of the sealing toughness strip (449) is connected to the top of the metering disc (448), and the other end is connected to the top of the sealing groove (447), and the two ends of the sealing toughness strip (449) are slidingly connected to the inner walls of the sealing groove (447), so that the falling additive can be blocked by the sealing toughness strip (449), preventing the additive from penetrating into the surface of the polypropylene resin through the sealing groove (447), and the toughness stretching of the weight supporting and sliding of the metering disc (448) can be achieved.

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