Polypropylene microcellular foamed sheet with flame retardant and smoke suppression for melt granulation platform

Abstract

The present application relates to the technical field of melt granulation, and discloses a melt granulation platform for processing polypropylene microporous foaming sheet with flame-retardant and smoke-suppressing properties, which comprises a granulator shell, a water reservoir and a screw feeder, the water reservoir is arranged on the top of the granulator shell, the screw feeder is arranged above the granulator shell, a feeding assembly for assisting batch feeding is arranged on the top of the screw feeder, and a cooling assembly for cooling the molten columnar polypropylene before it enters the water reservoir is arranged above the granulator shell. Compared with the traditional feeding mode of the polypropylene melt granulator, the batch feeding can reduce the impact force of the large raw materials entering the screw at one time, reduce the instability of the material line, and is conducive to the smooth production process. At the same time, the batch feeding can control the feeding speed of the raw materials, reduce the risk of material line blockage, ensure the uniformity of the raw materials in the processing process, and ensure the normal operation of the equipment and the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of melt granulation technology, specifically to a melt granulation platform for processing polypropylene microporous foam sheets with flame retardant and smoke-suppressing properties. Background Technology

[0002] A melt granulation platform for processing polypropylene microporous foam sheets is a specialized device or work platform used to melt and process raw materials such as polypropylene into granules. Melt granulation is a crucial step in the production of polypropylene microporous foam sheets. This platform typically includes a heating and melting system, an extrusion mechanism, a cooling system, and a control and regulation system. Through such a melt granulation platform, polypropylene granules that meet the requirements of subsequent processing can be prepared, providing the basic materials for the production of high-quality microporous foam sheets.

[0003] However, polypropylene melt granulation machines on the market often experience blockages and uneven feeding during the granulation process. This is mainly due to the following reasons: First, if the moisture content of the polypropylene raw material is uneven, some material will absorb moisture and soften, causing blockage at the feed inlet, while other parts are too dry and difficult to feed evenly. Second, if the feed inlet design is unreasonable, such as having a too-small diameter or an improper shape, it can easily cause blockages or uneven feeding. Additionally, if the feeding speed is too fast, the granulator cannot process it in time, easily causing blockages; while a slow feeding speed will lead to uneven feeding, resulting in poor granulation and a tendency for porosity. Blockages during feeding also force the granulator to stop for cleaning or adjustment, thus affecting production efficiency and increasing production costs. Furthermore, uneven feeding leads to uneven product composition, inconsistent particle size, and unstable quality, affecting product quality. In addition, long-term blockages and uneven feeding problems increase the risk of wear and damage to internal parts of the granulator, further affecting the reliability and service life of the equipment.

[0004] In commercially available polypropylene melt granulation machines, if the melting temperature is too high during the granulation process, the polypropylene becomes overly fluid, causing it to become intertwined before entering the storage tank. Additionally, if the granulator's feed line is blocked or clogged, the molten polypropylene will change direction as it is extruded from the melting device, also resulting in intertwining. This intertwining of the molten columnar polypropylene leads to uneven distribution of polypropylene in the storage tank, resulting in unstable granule quality, with inconsistent particle size and irregular shape, affecting product quality. Furthermore, intertwining can cause production line shutdowns or problems during production, requiring additional time and resources to resolve, thus reducing production efficiency. Moreover, intertwining wastes a certain amount of polypropylene, preventing it from being properly granulated, which not only wastes raw materials but also increases energy consumption and production costs.

[0005] In traditional polypropylene melt granulation machines, the molten polypropylene is not cooled before entering the storage tank. If the molten polypropylene enters the storage tank directly without cooling, the granules will be too hot, making it difficult for them to solidify in the storage tank. This results in irregular shapes and inconsistent sizes, affecting product quality. Secondly, since the uncooled polypropylene enters the storage tank, it takes longer for the granules to cool and solidify, thus reducing production efficiency, increasing production cycle and costs. At the same time, the high temperature of the polypropylene entering the storage tank increases the load on the equipment, which can easily lead to overheating or damage, increasing the cost of equipment maintenance and replacement.

[0006] Therefore, there is a need to provide a melt granulation platform for processing polypropylene microporous foam sheets with flame retardant and smoke-suppressing properties, in order to solve the above problems. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a melt granulation platform for processing polypropylene microporous foam sheets with flame retardant and smoke suppression properties.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets, comprising a granulator housing, a water storage tank, and a screw feeder. The water storage tank is located at the top of the granulator housing, and the screw feeder is positioned above the granulator housing. A feeding component for assisting in batch feeding is provided at the top of the screw feeder. A horizontal reciprocating moving component for combing the molten columnar polypropylene is provided at the top of the granulator housing. A cooling component for cooling the molten columnar polypropylene before it enters the water storage tank is provided above the granulator housing.

[0009] Preferably, the feeding assembly includes a cylindrical material distribution shell, which is fixedly connected to the top of the screw feeder. A feed funnel is fixedly connected to the top of the cylindrical material distribution shell. A hexagonal drive block is rotatably connected inside the cylindrical material distribution shell. Three feeding plates are rotatably connected to the outer wall of the hexagonal drive block in a ring shape. A columnar slide rod is fixedly connected to the end of each of the three feeding plates away from the hexagonal drive block. An annular groove is formed on the inner wall of the cylindrical material distribution shell.

[0010] Preferably, the horizontal reciprocating moving component includes a discharge block, which is fixedly connected to the top of the pellet mill housing. The discharge block has a rotating groove inside, and a rotating disk is rotatably connected inside the rotating groove. A driving device is fixedly connected to the top of the discharge block, and the rotating disk is fixedly connected to the output shaft of the driving device. A columnar lever is fixedly connected to the side of the rotating disk away from the driving device.

[0011] Preferably, the horizontal reciprocating moving component further includes a half gear rod, which is rotatably connected to the inside of the rotating groove. The top of the half gear rod has a strip-shaped groove, and the bottom of the rotating groove is slidably connected to a toothed column. A power transmission belt is connected between the output shaft of the drive device and the hexagonal drive block.

[0012] Preferably, the cooling component includes a square push rod, which is fixedly connected to the inside of the toothed column. An air supply cylinder assembly is fixedly connected to the bottom of the square push rod. An air outlet is provided at the top of the air supply cylinder assembly. A platform-shaped wind baffle is snapped onto the top of the air supply cylinder assembly. An air inlet is provided at the bottom of the air supply cylinder assembly. A sealing cylinder is sleeved on the bottom of the air supply cylinder assembly. A crescent-shaped comb block is fixedly connected to the bottom of the air supply cylinder assembly. An air pump is fixedly connected inside the discharge block. A telescopic air supply pipe is fixedly connected inside the air pump.

[0013] Preferably, the hexagonal drive block is eccentrically rotatably connected to the inside of the cylindrical material distribution shell, the columnar slide rod is slidably connected to the inside of the annular groove, and the three feeding plates on the outer wall of the hexagonal drive block divide the inside of the cylindrical material distribution shell into three regions.

[0014] Preferably, the half-gear rod is rotatably connected to the bottom of the rotating disk, and the columnar lever is slidably connected to the inside of the strip groove, and the half-gear rod meshes with the tooth column.

[0015] Preferably, the platform-shaped air baffle does not completely seal the top of the air delivery cylinder assembly, the sealing cylinder is sleeved on the outside of the air inlet, and the end of the telescopic air delivery pipe away from the air pump is fixedly connected to the sealing cylinder.

[0016] Preferably, the number of gas delivery cylinder groups is set according to the number of molten columnar polypropylene, and the number of gas delivery cylinder groups is the same as the number of molten columnar polypropylene.

[0017] Preferably, the air inlet is inclined and located at the bottom of the air delivery cylinder assembly.

[0018] The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets provided by this invention has the following advantages compared with the prior art:

[0019] 1. By configuring the feeding assembly, the hexagonal drive block rotates synchronously with the feeding plate, which rotates along the interior of the cylindrical material distribution shell. The cylindrical slide bar and annular groove allow the feeding plate to rotate along the shape of the annular groove. Simultaneously, because the hexagonal drive block rotates eccentrically inside the cylindrical material distribution shell, the feeding plate can feed polypropylene raw materials into the screw feeder in batches during rotation. Compared to the traditional feeding method of polypropylene melt granulation machines, batch feeding reduces the impact of large pieces of raw material entering the screw at once, lowers the instability of the feed line, and promotes stable production. Furthermore, batch feeding controls the feed rate, reduces the risk of feed line blockage, ensures the uniformity of raw materials during processing, and guarantees the normal operation and production efficiency of the equipment.

[0020] 2. By configuring the hexagonal drive block and the feeding plate, the feeding plate gradually compresses the polypropylene raw material as it rotates along the inside of the cylindrical distribution shell. When the feeding plate passes the bottom of the cylindrical distribution shell, it pushes the compressed polypropylene raw material down into the screw feeder. Compared to the traditional feeding method of polypropylene melt granulation machines, compressing the raw material increases the amount of raw material input per unit time, improves production efficiency, speeds up the granulation process, and makes it easier for the compressed raw material to enter the processing area of ​​the melt granulation machine. This reduces the load on the equipment during processing, helps to reduce wear and tear, and extends the service life of the equipment. At the same time, the compressed raw material has a higher density and melts more evenly after entering the granulator, which can improve the uniformity and stability of the finished granules.

[0021] 3. By incorporating a horizontal reciprocating moving component and a cooling component, the rotating disk rotates, and the columnar lever drives the half-gear rod to rotate. Simultaneously, the continuous rotation of the disk causes the half-gear rod to reciprocate around the interior of the rotating groove. During this rotation, the half-gear rod meshes with the toothed column at the bottom, causing it to move horizontally back and forth. The toothed column, in turn, drives the air delivery cylinder assembly and the crescent-shaped combing block to move laterally back and forth via a square push rod. This lateral horizontal movement of the crescent-shaped combing block combs the molten columnar polypropylene, preventing it from becoming entangled. Compared to traditional methods that do not protect the molten polypropylene before it enters the water storage tank, this effectively prevents the entanglement and adhesion between the molten columnar polypropylene particles. This ensures uniform particle shape and size during subsequent cutting of the columnar polypropylene, improving product quality and avoiding resource waste caused by the easy entanglement of columnar polypropylene. It also ensures that the molten columnar polypropylene does not entangle, thereby reducing the possibility of equipment failure and downtime, and improving production efficiency.

[0022] 4. By designing the cooling components, when the air pump delivers air to the interior of the sealed cylinder through the telescopic air delivery pipe, the inclined air inlet creates a high-speed rotating vortex. Due to the centrifugal force of the vortex, the airflow is divided into hot and cold streams. The hot stream flows out at high speed from the gap between the platform-shaped baffle and the air delivery cylinder assembly, spiraling near the pipe wall. It then exits through the top outlet of the air delivery cylinder assembly. The remaining gas, blocked by the platform-shaped baffle, flows at high speed in the opposite spiral pattern towards the bottom of the air delivery cylinder assembly, forming a cold stream. Finally, the cold stream flows to the bottom of the air delivery cylinder assembly and passes through the crescent-shaped comb at the bottom. As the molten polypropylene flows out, the cold airflow cools the columnar polypropylene as it passes over the outer wall of the crescent-shaped comb block. In contrast, traditional polypropylene melt granulators do not cool the molten polypropylene before it enters the water storage tank during the granulation process. The molten polypropylene is cooled before entering the water storage tank, resulting in lower particle temperature, easier solidification, and a more regular and uniform particle shape, thus improving product quality. Furthermore, the cooled polypropylene solidifies into granules more quickly after entering the water storage tank, shortening the granulation cycle and improving production efficiency. The cooled polypropylene requires less cooling time before entering the water storage tank, consuming less energy and thus saving energy during the production process. Attached Figure Description

[0023] Figure 1 This is a schematic diagram showing the overall positional relationship of the device according to the present invention;

[0024] Figure 2 This is a cross-sectional view of the overall device of the present invention;

[0025] Figure 3 This is a schematic diagram showing the positional relationship of the feeding components of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of the structure at point A in the middle;

[0027] Figure 5 This is a schematic diagram showing the positional relationship between the hexagonal drive block, the feeding plate, and the columnar slide bar of the present invention.

[0028] Figure 6 This is a schematic diagram showing the positional relationship between the pellet mill housing, the horizontal reciprocating moving component, and the cooling component of the present invention.

[0029] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point B in the middle;

[0030] Figure 8 This is a schematic diagram showing the positional relationship between the feeding component and the horizontal reciprocating moving component of the present invention;

[0031] Figure 9 This is a schematic diagram showing the positional relationship between the horizontal reciprocating moving component and the cooling component of the present invention;

[0032] Figure 10 This is a schematic diagram showing the positional relationship of the cooling components of the present invention;

[0033] Figure 11 This is a cross-sectional view of the cooling component of the present invention.

[0034] Reference numerals: 11. Granulator shell; 12. Water storage tank; 13. Screw feeder;

[0035] The feeding assembly includes: 21. a cylindrical dispensing shell; 22. a feeding funnel; 23. a hexagonal drive block; 24. a feeding plate; 25. a cylindrical slide bar; and 26. an annular groove.

[0036] The horizontal reciprocating moving assembly includes: 31, discharge block; 32, rotating groove; 33, rotating disk; 34, columnar lever; 35, half gear rod; 36, strip groove; 37, toothed column; 38, drive device; 39, power transmission belt;

[0037] The cooling components include: 41, square push rod; 42, air supply cylinder assembly; 43, air outlet; 44, platform-shaped wind baffle; 45, air inlet; 46, sealing cylinder; 47, crescent-shaped comb block; 48, air pump; 49, telescopic air supply pipe. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0039] In the description of this invention, the terms “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 limitations on this invention.

[0040] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0041] Implementation, for example Figures 1 to 11As shown, a melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets is provided according to an embodiment of the present invention. It includes a granulator housing 11, a water storage tank 12, and a screw feeder 13. The water storage tank 12 is located at the top of the granulator housing 11, and the screw feeder 13 is located above the granulator housing 11. A feeding component for assisting batch feeding is provided at the top of the screw feeder 13. A horizontal reciprocating moving component for combing the molten columnar polypropylene is provided at the top of the granulator housing 11. A cooling component for cooling the molten columnar polypropylene before it enters the water storage tank 12 is provided above the granulator housing 11.

[0042] The feeding assembly includes a cylindrical material distribution shell 21, which is fixedly connected to the top of the screw feeder 13. The top of the cylindrical material distribution shell 21 is fixedly connected to a feed funnel 22. A hexagonal drive block 23 is rotatably connected inside the cylindrical material distribution shell 21. Three feeding plates 24 are rotatably connected in a ring on the outer wall of the hexagonal drive block 23. A columnar slide rod 25 is fixedly connected to the end of each of the three feeding plates 24 away from the hexagonal drive block 23. An annular groove 26 is formed on the inner wall of the cylindrical material distribution shell 21.

[0043] The hexagonal drive block 23 is eccentrically connected to the inside of the cylindrical material distribution shell 21, and the columnar slide rod 25 is slidably connected to the inside of the annular groove 26. The three feeding plates 24 on the outer wall of the hexagonal drive block 23 divide the inside of the cylindrical material distribution shell 21 into three areas, so that the three feeding plates 24 can achieve the effect of batch feeding.

[0044] The horizontal reciprocating moving assembly includes a discharge block 31, which is fixedly connected to the top of the pellet mill housing 11. A rotating groove 32 is provided inside the discharge block 31, and a rotating disk 33 is rotatably connected inside the rotating groove 32. A driving device 38 is fixedly connected to the top of the discharge block 31, and the rotating disk 33 is fixedly connected to the output shaft of the driving device 38. A columnar lever 34 is fixedly connected to the side of the rotating disk 33 away from the driving device 38.

[0045] The horizontal reciprocating motion assembly also includes a half gear rod 35, which is rotatably connected to the inside of the rotating groove 32. A strip-shaped groove 36 is provided on the top of the half gear rod 35, and a toothed column 37 is slidably connected to the bottom of the rotating groove 32. A power transmission belt 39 is connected between the output shaft of the drive device 38 and the hexagonal drive block 23.

[0046] The half gear rod 35 is rotatably connected to the bottom of the rotating disk 33, and the columnar lever 34 is slidably connected to the inside of the strip groove 36. The half gear rod 35 meshes with the toothed column 37, so that the half gear rod 35 can move the toothed column 37 horizontally back and forth.

[0047] The cooling assembly includes a square push rod 41, which is fixedly connected to the inside of the toothed post 37. The bottom of the square push rod 41 is fixedly connected to an air supply cylinder assembly 42. An air outlet 43 is opened at the top of the air supply cylinder assembly 42. A platform-shaped wind baffle 44 is snapped into the top of the air supply cylinder assembly 42. An air inlet 45 is opened at the bottom of the air supply cylinder assembly 42. A sealing cylinder 46 is sleeved at the bottom of the air supply cylinder assembly 42. A crescent-shaped comb block 47 is fixedly connected to the bottom of the air supply cylinder assembly 42. An air pump 48 is fixedly connected inside the discharge block 31. A telescopic air supply pipe 49 is fixedly connected inside the air pump 48.

[0048] The platform-shaped wind baffle 44 does not completely seal the top of the air delivery cylinder assembly 42, allowing hot air to flow out through the air outlet 43. The sealing cylinder 46 is sleeved on the outside of the air inlet 45. The end of the telescopic air delivery pipe 49 away from the air pump 48 is fixedly connected to the sealing cylinder 46, allowing the air pump 48 to flow into the interior of the air delivery cylinder assembly 42 through the sealing cylinder 46 and the air inlet 45.

[0049] The number of gas cylinder groups 42 is set according to the number of molten columnar polypropylene, and the number of gas cylinder groups 42 is the same as the number of molten columnar polypropylene, so that the gas cylinder groups 42 can comb and cool the columnar polypropylene through the crescent-shaped combing blocks 47. The air inlet 45 is opened at the bottom of the gas cylinder group 42 at an angle, so that the airflow entering the gas cylinder group 42 through the air inlet 45 is in the form of a high-speed rotating vortex.

[0050] If the feed line of the pellet mill is blocked or obstructed, the molten polypropylene will change direction and become intertwined when it is extruded from the melting device. When the operator starts the drive device 38, the drive device 38 will drive the rotating disk 33 to rotate at the top of the rotating groove 32. At the same time, the rotating disk 33 will drive the columnar lever 34 on the side away from the drive device 38 to rotate synchronously. Because the columnar lever 34 is slidably connected to the inside of the strip groove 36, the columnar lever 34 will drive the half gear rod 35 to rotate through the strip groove 36 during the rotation. As the drive device 38 drives the columnar lever 34 to rotate continuously through the rotating disk 33, the half gear rod 35 meshes with the toothed column 37. The columnar lever 34 will drive the half gear rod 35 to reciprocate around the rotating groove 32 through the strip groove 36.

[0051] When the half gear rod 35 reciprocates around the rotating groove 32, the half gear rod 35 will continuously mesh with the toothed column 37, thereby causing the toothed column 37 to slide horizontally back and forth along the bottom of the rotating groove 32. At the same time, the toothed column 37 will drive the square push rod 41 fixedly connected to it to move horizontally back and forth. As the square push rod 41 moves away from the discharge block 31, the square push rod 41 will drive the crescent-shaped combing block 47 to move horizontally back and forth through the air supply cylinder group 42 at the bottom. During the movement of the crescent-shaped combing block 47, it will comb the molten columnar polypropylene, avoiding the situation of the molten columnar polypropylene forming an intertwined state before entering the water storage tank 12.

[0052] Working principle: In the initial state, the toothed column 37 and the square push rod 41 are located inside the discharge block 31, the columnar lever 34 is located at the top of the strip groove 36, and the half gear rod 35 does not contact the toothed column 37.

[0053] During operation, before granulation in the pellet mill housing 11, the operator first powers on the drive device 38 and the air pump 48. Then, after the drive device 38 is started, it drives the hexagonal drive block 23 to rotate through the power transmission belt 39.

[0054] Subsequently, the staff needs to feed polypropylene into the feed hopper 22. Then, due to its own gravity, the polypropylene raw material falls from the bottom of the feed hopper 22 into the cylindrical distribution shell 21. At this time, the hexagonal drive block 23 rotates eccentrically along the inside of the cylindrical distribution shell 21. At the same time, the hexagonal drive block 23 drives the three feeding plates 24 on the outer wall to rotate. During the process of the eccentrically rotating hexagonal drive block 23 driving the feeding plates 24 to rotate, the three feeding plates 24 on the outer wall of the hexagonal drive block 23 divide the inside of the cylindrical distribution shell 21 into three areas. The three feeding plates 24 will gradually compress the polypropylene raw material falling into the cylindrical distribution shell 21 in batches, thereby achieving the purpose of compressing the polypropylene raw material.

[0055] At the same time, the end of the feeding plate 24 away from the hexagonal drive block 23 will drive the columnar slide bar 25 to rotate along the inside of the annular groove 26. During the rotation of the three feeding plates 24, the compressed polypropylene raw material will be moved. Then, during the rotation of the three feeding plates 24, before the feeding plate 24 rotates to the bottom of the cylindrical material distribution shell 21, it will push the compressed polypropylene raw material to fall into the inside of the screw feeder 13, thereby achieving the purpose of feeding the compressed polypropylene raw material in batches.

[0056] After the compressed polypropylene raw material is melted by the screw feeder 13, the screw feeder 13 then injects the molten polypropylene raw material into the discharge block 31. Finally, the molten columnar polypropylene is discharged through the discharge block 31. At this time, the traditional polypropylene melt granulation machine will make the polypropylene too fluid due to the excessive melting temperature, which will make the molten polypropylene easy to form an intertwined situation before entering the water storage tank 12.

[0057] Because the horizontal reciprocating moving component and the cooling component are set up, the above-mentioned columnar polypropylene is not entangled. When the operator powers on the drive device 38, the drive device 38 will drive the rotating disk 33 to rotate at the top of the rotating groove 32. At the same time, the rotating disk 33 will drive the columnar lever 34 on the side away from the drive device 38 to rotate synchronously. Because the columnar lever 34 is slidably connected to the inside of the strip groove 36, the columnar lever 34 will drive the half gear rod 35 to rotate through the strip groove 36 during the rotation process. As the drive device 38 drives the columnar lever 34 to rotate continuously through the rotating disk 33, the half gear rod 35 meshes with the toothed column 37. The columnar lever 34 will drive the half gear rod 35 to reciprocate around the rotating groove 32 through the strip groove 36.

[0058] When the half gear rod 35 reciprocates around the rotating groove 32, the half gear rod 35 will continuously mesh with the toothed column 37, thereby causing the toothed column 37 to slide horizontally back and forth along the bottom of the rotating groove 32. At the same time, the toothed column 37 will drive the square push rod 41 fixedly connected to it to move horizontally back and forth. As the square push rod 41 moves away from the discharge block 31, the square push rod 41 will drive the crescent-shaped combing block 47 to move horizontally back and forth through the air conveying cylinder group 42 at the bottom. During the movement of the crescent-shaped combing block 47, it will comb the molten columnar polypropylene, avoiding the situation of the molten columnar polypropylene forming an intertwined state before entering the water storage tank 12.

[0059] Simultaneously, after the air pump 48 is started, because the end of the telescopic air supply pipe 49 away from the air pump 48 is fixedly connected to the sealing cylinder 46, the air pump 48 will inject air into the interior of the sealing cylinder 46 through the telescopic air supply pipe 49. Because the air inlet 45 is opened at the bottom of the air supply cylinder assembly 42 at an angle, and the sealing cylinder 46 is sleeved on the outside of the air inlet 45, the air flowing into the interior of the sealing cylinder 46 will rush into the interior of the air supply cylinder assembly 42 along the angled air inlet 45. After the air enters the interior of the air supply cylinder assembly 42, it will form a high-speed rotating vortex. Due to the centrifugal effect of the vortex, the airflow will be divided into two airflows: cold and hot. Because the hot airflow is close to the pipe wall, and because the platform-shaped wind baffle 44 does not completely seal the top of the air supply cylinder assembly 42, the hot airflow close to the inner wall of the air supply cylinder assembly 42 will then spiral out along the gap between the platform-shaped wind baffle 44 and the sealed air supply cylinder assembly 42, and finally be discharged from the air outlet 43.

[0060] Subsequently, the remaining gas, blocked by the platform-shaped air baffle 44, flows at high speed towards the bottom of the gas delivery cylinder assembly 42 in a reverse spiral flow, thereby forming a cold airflow. Finally, the cold airflow flows into the interior of the crescent-shaped comb block 47 along the bottom of the gas delivery cylinder assembly 42, and finally flows out through the interior of the crescent-shaped comb block 47. When the columnar polypropylene passes the outside of the crescent-shaped comb block 47, it will be cooled by the cold airflow flowing out from inside, thereby achieving the purpose of cooling the columnar polypropylene before it enters the water storage tank 12.

[0061] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets, comprising a granulator housing (11), a water storage tank (12), and a screw feeder (13), wherein the water storage tank (12) is located at the top of the granulator housing (11), and the screw feeder (13) is located above the granulator housing (11), characterized in that, The top of the screw feeder (13) is provided with a feeding component for assisting batch feeding, the top of the pellet mill housing (11) is provided with a horizontal reciprocating moving component for combing the molten columnar polypropylene, and the top of the pellet mill housing (11) is provided with a cooling component for cooling the molten columnar polypropylene before it enters the water storage tank (12). The feeding assembly includes a cylindrical material distribution shell (21), which is fixedly connected to the top of the screw feeder (13). The top of the cylindrical material distribution shell (21) is fixedly connected to a feed funnel (22). A hexagonal drive block (23) is rotatably connected inside the cylindrical material distribution shell (21). Three feeding plates (24) are rotatably connected to the outer wall of the hexagonal drive block (23) in a ring. A columnar slide rod (25) is fixedly connected to the end of each of the three feeding plates (24) away from the hexagonal drive block (23). An annular groove (26) is provided on the inner wall of the cylindrical material distribution shell (21). The hexagonal drive block (23) is eccentrically rotatably connected to the inside of the cylindrical material distribution shell (21), the columnar slide rod (25) is slidably connected to the inside of the annular groove (26), and the three feeding plates (24) on the outer wall of the hexagonal drive block (23) divide the inside of the cylindrical material distribution shell (21) into three regions.

2. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 1, characterized in that, The horizontal reciprocating moving component includes a discharge block (31), which is fixedly connected to the top of the pellet mill housing (11). The discharge block (31) has a rotating groove (32) inside, and a rotating disk (33) is rotatably connected inside the rotating groove (32). A driving device (38) is fixedly connected to the top of the discharge block (31), and the rotating disk (33) is fixedly connected to the output shaft of the driving device (38). A columnar lever (34) is fixedly connected to the side of the rotating disk (33) away from the driving device (38).

3. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 2, characterized in that, The horizontal reciprocating motion assembly also includes a half gear rod (35), which is rotatably connected to the inside of the rotating groove (32). The top of the half gear rod (35) is provided with a strip groove (36), and the bottom of the rotating groove (32) is slidably connected with a toothed column (37). The output shaft of the drive device (38) is connected to the hexagonal drive block (23) by a power transmission belt (39).

4. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 2, characterized in that, The cooling component includes a square push rod (41), which is fixedly connected to the inside of the toothed column (37). The bottom of the square push rod (41) is fixedly connected to an air supply cylinder assembly (42). The top of the air supply cylinder assembly (42) is provided with an air outlet (43). The top of the air supply cylinder assembly (42) is fitted with a platform-shaped wind baffle block (44). The bottom of the air supply cylinder assembly (42) is provided with an air inlet (45). The bottom of the air supply cylinder assembly (42) is fitted with a sealing cylinder (46). The bottom of the air supply cylinder assembly (42) is fixedly connected to a crescent-shaped comb block (47). The inside of the discharge block (31) is fixedly connected to an air pump (48). The inside of the air pump (48) is fixedly connected to a telescopic air supply pipe (49).

5. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 3, characterized in that, The half gear rod (35) is rotatably connected to the bottom of the rotating disk (33), and the columnar lever (34) is slidably connected to the inside of the strip groove (36), and the half gear rod (35) meshes with the toothed column (37).

6. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 4, characterized in that, The platform-shaped wind baffle (44) does not completely seal the top of the air delivery cylinder assembly (42), the sealing cylinder (46) is sleeved on the outside of the air inlet (45), and the end of the telescopic air delivery pipe (49) away from the air pump (48) is fixedly connected to the sealing cylinder (46).

7. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 4, characterized in that, The gas delivery cylinder group (42) is set according to the number of molten columnar polypropylene, and the number of the gas delivery cylinder group (42) is the same as the number of molten columnar polypropylene.

8. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 4, characterized in that, The air inlet (45) is inclined at the bottom of the air delivery cylinder assembly (42).

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