Melting granulation platform for processing polypropylene microcellular foaming sheet with flame-retardant and smoke-suppression functions

Abstract

The invention relates to the technical field of melt granulation, and discloses a flame-retardant smoke-suppression melt granulation platform for polypropylene microcellular foaming sheet processing, the flame-retardant smoke-suppression melt granulation platform comprises a granulator shell, a water storage tank and a screw feeder, the water storage tank is arranged at the top of the granulator shell, and the screw feeder is arranged above the granulator shell; according to the polypropylene melting granulator, a screw feeder is arranged in the granulator shell, a feeding assembly used for assisting batch feeding is arranged at the top of the screw feeder, and a cooling assembly used for cooling molten columnar polypropylene before the molten columnar polypropylene enters a water storage tank is arranged above the granulator shell. The batch feeding can reduce the impact force of large raw materials entering the screw at a time, reduce the instability of a stockline, facilitate the stable proceeding of the production process, control the feeding speed of the raw materials, reduce the risk of stockline blockage, ensure the uniformity of the raw materials in the processing process, and improve the production efficiency. And the normal operation and the production efficiency of equipment are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of melt granulation, in particular to a polypropylene microporous foamed sheet processing melt granulation platform with flame retardation and smoke suppression. BACKGROUND

[0002] The polypropylene microporous foamed sheet processing melt granulation platform is a device or work platform specially used for melting and processing raw materials such as polypropylene into granular form. In the production process of polypropylene microporous foamed sheet, melt granulation is an important link. This platform usually has the following functions: heating and melting system, extruder system, cooling system, control and adjustment system. Through such a melt granulation platform, polypropylene particles that meet the subsequent processing requirements can be prepared, providing basic materials for producing high-quality microporous foamed sheet.

[0003] However, the polypropylene melt granulator on the market often has the problems of blockage and uneven feeding during the granulation process. The main reasons are as follows: first, if the humidity of the polypropylene raw material is uneven, part of the raw material will absorb moisture and become soft, causing blockage at the feeding port, while the other part will be too dry and difficult to feed uniformly. Second, if the design of the feeding port is unreasonable, such as too small diameter or improper shape, it is easy to cause blockage or uneven feeding of the raw material. In addition, if the feeding speed is too fast, the granulator cannot process it in time, which may cause blockage. If the feeding speed is too slow, it will lead to uneven feeding and poor granulation effect, and the pores may appear. Blockage during feeding will cause the granulator to stop and clean or adjust, affecting production efficiency and increasing production cost. In addition, uneven feeding will lead to uneven product composition, uneven particle size and unstable quality, affecting product quality. Moreover, long-term blockage and uneven feeding will increase the risk of wear and damage of internal parts of the granulator, further affecting the reliability and service life of the equipment.

[0004] If the melting temperature of the granulator is too high during the granulation process of the polypropylene melt granulator on the market, the polypropylene will become too fluid, causing the molten polypropylene to form interlaced winding before entering the reservoir. If the material line of the granulator is blocked or obstructed, it will cause the direction of the molten polypropylene to change when it is extruded out of the melting device, also forming interlaced winding. The interlaced winding of the molten cylindrical polypropylene will cause uneven distribution of the polypropylene in the reservoir, resulting in unstable quality of the final granules, uneven particle size, irregular shape and other problems, affecting the quality of the product. At the same time, interlaced winding will cause the production line to stop or problems to occur during the production process, which requires additional time and resources to solve, thereby reducing production efficiency. In addition, interlaced winding will cause a certain amount of polypropylene to be wasted and unable to be normally granulated, which not only wastes raw materials but also increases energy consumption and production cost.

[0005] The traditional polypropylene melt granulator does not cool the molten polypropylene before it enters the reservoir during the granulation process. If the molten polypropylene is not cooled before entering the reservoir, the particle temperature will be too high, making it difficult for the particles to solidify in the reservoir, resulting in irregular particle shape and size, affecting product quality. Secondly, since the polypropylene without cooling enters the reservoir, it needs to wait for a longer time for the particles to cool and solidify, thereby reducing production efficiency, increasing production cycle and cost. At the same time, the high-temperature polypropylene entering the reservoir will increase the load of the equipment, easily causing overheating or damage to the equipment, increasing the cost of equipment maintenance and replacement.

[0006] Therefore, it is necessary to provide a polypropylene microporous foaming sheet processing melt granulation platform with flame-retardant and smoke-suppressing properties to solve the above problems. SUMMARY

[0007] In view of the deficiencies of the prior art, the purpose of the present application is to provide a polypropylene microporous foaming sheet processing melt granulation platform with flame-retardant and smoke-suppressing properties.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a polypropylene microporous foaming sheet processing melt granulation platform with flame-retardant and smoke-suppressing properties, comprising a granulator shell, a reservoir and a screw feeder, the reservoir is opened at the top of the granulator shell, the screw feeder is arranged above the granulator shell, the top of the screw feeder is provided with a feeding assembly for assisting batch feeding, the top of the granulator shell is provided with a horizontal reciprocating moving assembly for combing the molten columnar polypropylene, and the top of the granulator shell is provided with a cooling assembly for cooling the molten columnar polypropylene before it enters the reservoir.

[0009] Preferably, the feeding assembly comprises a cylindrical distribution shell, the cylindrical distribution shell is fixedly connected to the top of the screw feeder, a feeding hopper is fixedly connected to the top of the cylindrical distribution shell, a hexagonal driving block is rotatably connected in the cylindrical distribution shell, three feeding plates are annularly distributed and rotatably connected to the outer wall of the hexagonal driving block, columnar slide rods are fixedly connected to the ends of the three feeding plates away from the hexagonal driving block, and an annular groove is formed in the inner wall of the cylindrical distribution shell.

[0010] Preferably, the horizontal reciprocating moving assembly comprises a discharging block, the discharging block is fixedly connected to the top of the granulator shell, a rotating groove is formed in the interior of the discharging block, a rotating disc is rotatably connected in the rotating groove, a driving device is fixedly connected to the top of the discharging block, the rotating disc is fixedly connected to the output shaft of the driving device, and a columnar shifting rod is fixedly connected to the side of the rotating disc away from the driving device.

[0011] Preferably, the horizontal reciprocating movement assembly further comprises a half gear rod, the half gear rod is rotationally connected to the inside of the rotating groove, a strip-shaped groove is formed in the top of the half gear rod, a toothed column is slidingly connected to the bottom of the rotating groove, and a power transmission belt is transmissionally connected between the output shaft of the driving device and the hexagonal driving block.

[0012] Preferably, the cooling assembly comprises a square push rod, the square push rod is fixedly connected to the inside of the toothed column, a gas cylinder group is fixedly connected to the bottom of the square push rod, a gas outlet hole is formed in the top of the gas cylinder group, a table-shaped wind blocking block is clamped to the top of the gas cylinder group, a gas inlet hole is formed in the bottom of the gas cylinder group, a sealing cylinder is sleeved to the bottom of the gas cylinder group, a crescent-shaped combing block is fixedly connected to the bottom of the gas cylinder group, a gas pump is fixedly connected to the inside of the discharge block, and a telescopic gas conveying pipe is fixedly connected to the inside of the gas pump.

[0013] Preferably, the hexagonal driving block is eccentrically rotationally connected to the inside of the cylindrical material distributing shell, the cylindrical slide rod is slidingly connected to the inside of the annular groove, and the three feeding plates on the outer wall of the hexagonal driving block divide the inside of the cylindrical material distributing shell into three areas.

[0014] Preferably, the half gear rod is rotationally connected below the rotating disc, the cylindrical pull rod is slidingly connected to the inside of the strip-shaped groove, and the half gear rod is engaged with the toothed column.

[0015] Preferably, the table-shaped wind blocking block does not completely seal the top of the gas cylinder group, the sealing cylinder is sleeved to the outside of the gas inlet hole, and the end of the telescopic gas conveying pipe away from the gas pump is fixedly connected to the sealing cylinder.

[0016] Preferably, the number of the gas cylinder groups is the same as the number of the columnar polypropylene after melting.

[0017] Preferably, the gas inlet hole is obliquely formed in the bottom of the gas cylinder group.

[0018] Compared with the prior art, the melt granulation platform for processing the polypropylene microcellular foaming sheet with flame-retardant and smoke-suppressing has the following beneficial effects:

[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 Fig. 2 is a schematic view of the position relationship of the horizontal reciprocating moving assembly and the cooling assembly of the present application;

[0032] Figure 10 Fig. 3 is a schematic view of the position relationship of the cooling assembly of the present application;

[0033] Figure 11 Fig. 4 is a sectional view of the cooling assembly of the present application.

[0034] Fig. 5 is a schematic view of the granulator of the present application.

[0035] The feeding assembly comprises: 21, a cylindrical distribution shell; 22, a feeding hopper; 23, a hexagonal driving block; 24, a feeding plate; 25, a columnar sliding rod; 26, an annular groove;

[0036] The horizontal reciprocating moving assembly comprises: 31, a discharging block; 32, a rotating groove; 33, a rotating disc; 34, a columnar shifting rod; 35, a half gear rod; 36, a strip-shaped groove; 37, a toothed column; 38, a driving device; 39, a power transmission belt;

[0037] The cooling assembly comprises: 41, a square pushing rod; 42, a gas conveying cylinder group; 43, a gas outlet hole; 44, a table-shaped wind blocking block; 45, a gas inlet hole; 46, a sealing cylinder; 47, a crescent-shaped combing block; 48, a gas pump; 49, a telescopic gas conveying pipe. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application clearer and more comprehensible, the present application will be further described in detail below in combination with the drawings and examples, and it should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0039] In the description of the present application, the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0040] The specific implementation of the present application will be described in detail below in combination with specific examples.

[0041] The specific implementation of the present application will be described in detail below in combination with specific examples. Figures 1 to 11The illustrated is the melt granulation platform for processing polypropylene microporous foamed sheet with flame-retardant and smoke-suppression provided by one embodiment of the application, including a granulator shell 11, a water reservoir 12 and a screw feeder 13, the water reservoir 12 is opened at the top of the granulator shell 11, the screw feeder 13 is arranged above the granulator shell 11, the top of the screw feeder 13 is provided with a feeding assembly for assisting batch feeding, the top of the granulator shell 11 is provided with a horizontal reciprocating moving assembly for carding the columnar polypropylene after melting, and the top of the granulator shell 11 is provided with a cooling assembly for cooling the columnar polypropylene after melting before entering the water reservoir 12.

[0042] The feeding assembly includes a cylindrical material distributing shell 21, which is fixedly connected to the top of the screw feeder 13, the top of the cylindrical material distributing shell 21 is fixedly communicated with a feeding hopper 22, the inside of the cylindrical material distributing shell 21 is rotatably connected with a hexagonal driving block 23, the outer wall of the hexagonal driving block 23 is annularly rotatably connected with three feeding plates 24, and the ends of the three feeding plates 24 away from the hexagonal driving block 23 are fixedly connected with columnar slide rods 25, and the inner wall of the cylindrical material distributing shell 21 is provided with an annular groove 26.

[0043] The hexagonal driving block 23 is eccentrically rotatably connected in the inside of the cylindrical material distributing shell 21, the columnar slide rods 25 are slidably connected in the inside of the annular groove 26, and the three feeding plates 24 of the outer wall of the hexagonal driving block 23 divide the inside of the cylindrical material distributing 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 discharging block 31, which is fixedly connected to the top of the granulator shell 11, the inside of the discharging block 31 is provided with a rotating groove 32, the inside of the rotating groove 32 is rotatably connected with a rotating disc 33, the top of the discharging block 31 is fixedly connected with a driving device 38, the rotating disc 33 is fixedly connected with the output shaft of the driving device 38, and the side of the rotating disc 33 away from the driving device 38 is fixedly connected with a columnar poking rod 34.

[0045] The horizontal reciprocating moving assembly further includes a half gear rod 35, which is rotatably connected in the inside of the rotating groove 32, the top of the half gear rod 35 is provided with a strip-shaped groove 36, the bottom of the rotating groove 32 is slidably connected with a toothed column 37, and the output shaft of the driving device 38 and the hexagonal driving block 23 are transmissionally connected with a power transmission belt 39.

[0046] The half gear rod 35 is rotatably connected below the rotating disc 33, the columnar poking rod 34 is slidably connected in the inside of the strip-shaped groove 36, and the half gear rod 35 is engaged with the toothed column 37, so that the half gear rod 35 can drive the toothed column 37 to move horizontally and reciprocally.

[0047] The cooling assembly comprises a square push rod 41 fixedly connected to the inside of the tooth column 37, a gas delivery cylinder group 42 fixedly connected to the bottom of the square push rod 41, a gas outlet hole 43 formed in the top of the gas delivery cylinder group 42, a table-shaped wind blocking block 44 clamped to the top of the gas delivery cylinder group 42, a gas inlet hole 45 formed in the bottom of the gas delivery cylinder group 42, a sealing cylinder 46 sleeved to the bottom of the gas delivery cylinder group 42, a crescent-shaped carding block 47 fixedly communicated with the bottom of the gas delivery cylinder group 42, and a gas pump 48 fixedly connected to the inside of the discharge block 31 and fixedly communicated with a telescopic gas delivery pipe 49 in the inside of the gas pump 48.

[0048] The table-shaped wind blocking block 44 does not completely seal the top of the gas delivery cylinder group 42, so that the hot gas flow can flow out through the gas outlet hole 43. The sealing cylinder 46 is sleeved to the outside of the gas inlet hole 45, and the end of the telescopic gas delivery pipe 49 away from the gas pump 48 is fixedly communicated with the sealing cylinder 46, so that the gas pump 48 can flow into the inside of the gas delivery cylinder group 42 through the sealing cylinder 46 and the gas inlet hole 45.

[0049] The number of the gas delivery cylinder group 42 is the same as the number of the columnar polypropylene after melting, so that the gas delivery cylinder group 42 can card and cool the columnar polypropylene through the crescent-shaped carding block 47. The gas inlet hole 45 is formed in the bottom of the gas delivery cylinder group 42 in an inclined manner, so that the gas flow entering the inside of the gas delivery cylinder group 42 through the gas inlet hole 45 is in the form of high-speed rotating vortex.

[0050] Because the material line of the granulator is blocked or blocked, the direction of the molten polypropylene changes when it is extruded out of the melting device, forming an interlaced winding condition. When the driving device 38 is powered on and started by the staff, the driving device 38 will drive the rotating disc 33 to rotate at the top of the rotating groove 32, and the rotating disc 33 will drive the columnar lever 34 on the side away from the driving device 38 to rotate synchronously. Because the columnar lever 34 is slidingly connected to the inside of the strip-shaped groove 36, the columnar lever 34 will drive the half gear rod 35 to rotate through the strip-shaped groove 36 in the process of rotating. In the process of driving the columnar lever 34 to rotate continuously by the driving device 38 through the rotating disc 33, because the half gear rod 35 is engaged with the tooth column 37, the columnar lever 34 will drive the half gear rod 35 to reciprocatingly rotate around the rotating groove 32 through the strip-shaped 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 tooth column 37, thereby making the tooth column 37 reciprocate horizontally along the bottom of the rotating groove 32, and the tooth column 37 will drive the square push rod 41 fixedly connected thereto to reciprocate horizontally, and in the process of moving away from the discharge block 31, the square push rod 41 will drive the crescent-shaped combing block 47 to reciprocate horizontally through the bottom gas cylinder group 42, and in the process of moving, the crescent-shaped combing block 47 will comb the molten columnar polypropylene, avoiding the situation that the molten columnar polypropylene is intertwined before entering the reservoir 12.

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

[0053] When working, before the granulator shell 11 granulates, the staff first powers on the driving device 38 and the air pump 48, and then drives the hexagonal driving block 23 to rotate through the power transmission belt 39 after the driving device 38 is started;

[0054] Then the staff needs to put the polypropylene into the inside of the feeding hopper 22, and then the polypropylene raw material falls to the inside of the cylindrical distribution shell 21 through the bottom of the feeding hopper 22 due to its own gravity, while the hexagonal driving block 23 eccentrically rotates inside the cylindrical distribution shell 21, and the hexagonal driving block 23 drives the three feeding plates 24 on the outer wall to rotate, and in the process of driving the feeding plates 24 to rotate by the eccentric hexagonal driving block 23, the three feeding plates 24 on the outer wall of the hexagonal driving block 23 divide the inside of the cylindrical distribution shell 21 into three areas, and the three feeding plates 24 will gradually compress the polypropylene raw material falling into the inside of 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 driving block 23 will drive the columnar slide rod 25 to rotate inside the annular groove 26, and in the process of rotating the three feeding plates 24, the compressed polypropylene raw material will be moved, and in the process of rotating the three feeding plates 24, the compressed polypropylene raw material will be pushed to fall into the inside of the screw feeder 13 before the feeding plate 24 rotates to the bottom of the cylindrical distribution shell 21, thereby achieving the purpose of feeding the compressed polypropylene raw material in batches.

[0056] After the compressed polypropylene raw materials are melted by the screw feeder 13, the screw feeder 13 injects the melted polypropylene raw materials into the inside of the discharge block 31, and finally discharges the melted columnar polypropylene through the discharge block 31. At this time, the traditional polypropylene melting granulator is prone to cause the melted polypropylene to form an interlaced winding condition before entering the reservoir 12 due to the excessively high melting temperature of the polypropylene, which makes the polypropylene too flowable;

[0057] The horizontal reciprocating movement assembly and the cooling assembly are arranged to avoid the winding condition of the columnar polypropylene. When the driving device 38 is powered on by the staff, the driving device 38 drives the rotating disc 33 to rotate at the top of the rotating groove 32, and the rotating disc 33 drives the columnar stirring rod 34 on the side away from the driving device 38 to rotate synchronously. The columnar stirring rod 34 is slidingly connected in the inside of the strip-shaped groove 36, and the columnar stirring rod 34 rotates to drive the half gear rod 35 to rotate through the strip-shaped groove 36. During the process of continuously rotating the columnar stirring rod 34 by the driving device 38 through the rotating disc 33, the half gear rod 35 is engaged with the toothed column 37, and the columnar stirring rod 34 drives the half gear rod 35 to reciprocate around the rotating groove 32 through the strip-shaped groove 36;

[0058] When the half gear rod 35 reciprocates around the rotating groove 32, the half gear rod 35 is continuously engaged with the toothed column 37, thereby making the toothed column 37 horizontally reciprocate along the bottom of the rotating groove 32, and the toothed column 37 drives the square push rod 41 fixedly connected thereto to horizontally reciprocate, thereby making the square push rod 41 move away from the discharge block 31. During the process of moving away from the discharge block 31, the square push rod 41 drives the crescent-shaped combing block 47 to horizontally reciprocate through the bottom air cylinder group 42. During the movement of the crescent-shaped combing block 47, the crescent-shaped combing block 47 combs the melted columnar polypropylene, thereby avoiding the interlaced winding condition of the melted columnar polypropylene before entering the reservoir 12;

[0059] At the same time, after the air pump 48 is started, the air pump 48 injects air into the inside of the sealing cylinder 46 through the telescopic air pipe 49. The air inlet hole 45 is obliquely arranged at the bottom of the air cylinder group 42, and the sealing cylinder 46 is sleeved on the outside of the air inlet hole 45. The air flowing into the inside of the sealing cylinder 46 flows into the inside of the air cylinder group 42 along the oblique air inlet hole 45, and the air entering the inside of the air cylinder group 42 forms a high-speed rotating vortex. Due to the centrifugal action of the vortex, the air flow is divided into cold and hot air flows. The hot air flow is close to the pipe wall, and the hot air flow close to the inner wall of the air cylinder group 42 spirally flows out through the gap between the table-shaped air resistance block 44 and the sealing air cylinder group 42, and finally flows out from the air outlet hole 43;

[0060] The remaining gas is blocked by the block 44 and flows to the bottom of the gas cylinder group 42 in a reverse spiral manner, and then forms a cold air flow, and finally the cold air flow flows into the crescent combing block 47 along the bottom of the gas cylinder group 42, and finally flows out through the inside of the crescent combing block 47. When the columnar polypropylene passes outside the crescent combing block 47, it is cooled by the cold air flow flowing out of the inside of the crescent combing block 47, thereby achieving the purpose of cooling the columnar polypropylene before entering the reservoir 12.

[0061] For those skilled in the art, although several embodiments and examples of the present application are described, these embodiments and examples are presented as examples and are not intended to limit the scope of the application. These new embodiments can be implemented in other various ways, and various omissions, substitutions, changes can be made without departing from the scope of the application. These embodiments and their modifications are included in the scope and spirit of the application, and are included in the scope of the application and its equivalents as recited in the claims.

[0062] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each example can be properly combined to form other embodiments that those skilled in the art can understand.

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).

2. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 1, characterized in that, 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 opened on the inner wall of the cylindrical material distribution shell (21).

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 moving assembly 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).

4. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 3, 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-shaped 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).

5. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 3, 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).

6. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 2, characterized in that, 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.

7. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 4, 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).

8. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 5, 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).

9. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 5, 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.

10. The melt granulation platform for processing flame-retardant and smoke-suppressing polypropylene microporous foam sheets according to claim 5, characterized in that, The air inlet (45) is inclined at the bottom of the air delivery cylinder assembly (42).

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