Flame retardant plastic production equipment and processing method thereof

Abstract

The present invention discloses a flame-retardant plastic production equipment and a processing method thereof, comprising: a tank body containing clean water for cooling a semi-finished product; two drive rollers fixedly arranged on one side of the tank body relative to each other, with the other side of the tank body being the side where a long strip of semi-finished product is extruded from a plastic extruder. When started, the two drive rollers rotate in opposite directions to pull the semi-finished product to move within the tank body; and a rapid cooling component obliquely arranged within the tank body, with its upwardly inclined end facing the direction of the semi-finished product. The present invention controls the rapid contraction and deformation of an airbag, thereby rapidly drawing the clean water within the tank body into a second ring body and contacting the semi-finished product, thereby absorbing heat from the semi-finished product. The airbag is then controlled to rapidly expand and deform, thereby rapidly discharging the clean water within the second ring body that has absorbed heat. This cycle is repeated, so that the clean water within the tank body rapidly and intermittently flushes the semi-finished product, thereby achieving rapid cooling of the semi-finished product.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic particle production, in particular to flame retardant plastic production equipment and a processing method thereof. Background Art

[0002] Plastic is a high molecular compound made from monomers through addition or condensation reactions. It has a medium deformation resistance, between that of fiber and rubber. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, flame retardants, and colorants.

[0003] Plastic extruders can be used to manufacture plastic granules. The corresponding materials pass through the action between the extruder barrel and the screw, while being heated and plasticized, and pushed forward by the screw, continuously passing through the head to form long strips of semi-finished products, which are then cooled and cut to form plastic granules.

[0004] However, in the cooling process, a cooling pool is usually used. The pool is filled with clean water. The high-temperature long strip semi-finished products extruded from the plastic extruder head are water-cooled by utilizing the large specific heat capacity of water. Since the high-temperature long strip semi-finished products are easily deformed under stress, the semi-finished products are usually placed in the cooling pool for natural cooling. The clean water in the cooling pool absorbs the temperature of the semi-finished products at a rate proportional to the contact area between the clean water and the semi-finished products. In order to increase the contact area, the cooling pool occupies a larger area. In addition, the above-mentioned water cooling method cools the semi-finished products extruded by the plastic extruder relatively slowly, thereby reducing the production speed of plastic particles. Summary of the Invention

[0005] The purpose of the present invention is to provide a flame retardant plastic production device and a processing method thereof, so as to accelerate the cooling of a semi-finished product extruded from a plastic extruder.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A flame retardant plastic production device, comprising:

[0008] A tank body, wherein the tank body contains clean water for cooling the semi-finished product;

[0009] Two driving rollers are relatively fixedly arranged on one side of the tank body, and the other side of the tank body is the side where the long semi-finished product is extruded from the plastic extruder. When started, the two driving rollers rotate in opposite directions, which can pull the semi-finished product to move within the tank body;

[0010] The rapid cooling component is obliquely arranged in the pool body, with its upward inclined end facing the direction of the semi-finished product and its downward inclined end facing the direction of the semi-finished product. The rapid cooling component absorbs and drains water in a high-frequency cycle to quickly cool the semi-finished product entering the rapid cooling component.

[0011] Preferably, the pool body is fixedly connected to a mounting plate, the mounting plate is provided with a plurality of through holes, the mounting plate is fixedly connected to a first ring body, the first ring body is arranged obliquely within the pool body, a second ring body is arranged coaxially with the first ring body, the second ring body is located inside the first ring body, the first ring body and the second ring body have the same length, a first annular cover is fixedly connected at both ends between the first ring body and the second ring body, an air extraction pump and an air inflation pump are fixedly installed on the inner wall of the first ring body, the air extraction pump can extract and discharge the gas in the first ring body outward, and the air inflation pump can inflate the gas outside the first ring body inward.

[0012] Preferably, an inflatable airbag is provided on the inner wall of the second ring body, and the airbag is bonded to the circumferential inner wall of the second ring body. The airbag is annular, and the second ring body is provided with a plurality of air holes, and the air holes are directly connected to the interior of the airbag. The output end of the air pump and the input end of the air pump are connected by a pipe and extend to the top of the pool body, and the input end of the air pump and the output end of the air pump are both located between the first ring body and the second ring body.

[0013] Preferably, a third ring body and a fourth ring body are coaxially arranged within the second ring body, and the third ring body and the fourth ring body are both located inside the second ring body and at both ends of the second ring body, respectively. Two annular second covers are fixedly connected at both ends of the second ring body, and are respectively fixedly connected to the third ring body and the fourth ring body, and a plurality of gear levers are fixedly connected between the third ring body and the fourth ring body, and the third ring body is located at the downward-inclined end of the second ring body, and the fourth ring body is located at the upward-inclined end of the second ring body.

[0014] Preferably, at least one one-way flow component is provided on each of the third ring body and the fourth ring body. The third ring body can allow the clean water in the pool body to enter the second ring body from the third ring body through the one-way flow component, and the fourth ring body can allow the clean water in the second ring body to be discharged from the fourth ring body into the pool body through the one-way flow component.

[0015] Preferably, the one-way flow component includes a flow groove provided in the third ring body or the fourth ring body, the flow groove passes through the third ring body or the fourth ring body, a rotating block is arranged inside the flow groove, a pair of diagonal edges of the rotating block are rounded, both sides of the rotating block are fixedly connected to the rotating shaft, the third ring body provides a rotating hole with the same aperture as the rotating shaft, the rotating shaft is located inside the corresponding rotating hole and is slidably connected to the rotating hole, a torsion spring is also provided inside the rotating hole, and the two ends of the torsion spring are respectively connected to the inner wall of the rotating hole and the rotating shaft.

[0016] Preferably, two limiting rings are fixedly connected to the inner rings of the third ring body and the fourth ring body, and an annular water-absorbing sponge is arranged between the two limiting rings. The diameter of the semi-finished product is the same as the inner diameter of the limiting ring. A rotating roller is rotatably connected in the pool body, and the lower side of the rotating roller corresponds to the extension direction of the virtual central axis of the third ring body. The semi-finished product passing through the third ring body passes under the rotating roller, winds upward, and then passes between the two driving rollers.

[0017] Preferably, support blocks are fixed at the four corners above the pool body, and the four support blocks are fixedly connected to the baffle. A plurality of wind guide components are arranged between the opening above the pool body and the baffle. The hot air flow from the clean water in the pool body absorbs heat and evaporates steam upward, and is guided by the wind guide components to change from the original upward airflow to the direction toward the plastic extruder to extrude the semi-finished product.

[0018] Preferably, the wind guide component includes an inverted U-shaped fold, which is fixedly connected to the baffle. The fold has a front end and a rear end, and the front end is bent toward the rear end and does not contact the rear end, forming an intermediate flow area bent and wrapped by the fold and a gap formed between the front end and the rear end.

[0019] A method for processing flame retardant plastic production equipment comprises the following steps:

[0020] The long semi-finished product extruded by the plastic extruder head in front of the tank body enters from the fourth ring body, passes through multiple gear bars and comes out from the third ring body, passes under the rotating roller and bends upward from the tank body. It is pulled by the two driving rollers at the rear of the tank body, so that the semi-finished product can move at a uniform speed in the tank body.

[0021] The inflation pump is started and the exhaust pump is stopped, and air is rushed into the airbag through the air hole, causing the airbag to expand and deform, squeezing the clean water inside the second ring body to increase the hydraulic pressure, thereby displacing part of the clean water inside the second ring body. The rotating block on the fourth ring body is subjected to the hydraulic pressure and rotates to overcome the elastic force of the torsion spring, thereby opening the flow groove on the fourth ring body, and the clean water in the second ring body is discharged from the second ring body, while taking away the heat of the semi-finished product inside the second ring body.

[0022] The vacuum pump is started and the inflation pump is stopped to suck out the gas inside the expanded and deformed airbag and discharge it to the outside. The airbag contracts and deforms, causing the pressure inside the second ring body to decrease and negative pressure to appear. The rotating block on the third ring body is affected by the negative pressure and overcomes the elastic force of the torsion spring to rotate, thereby opening the flow groove on the third ring body. The clean water in the pool body quickly enters the second ring body and absorbs the heat of the semi-finished product in the second ring body.

[0023] The airbag is controlled to shrink and deform rapidly, so that the clean water in the pool body is quickly sucked into the second ring body and contacts the semi-finished product, thereby absorbing the heat of the semi-finished product. The airbag is controlled to expand and deform rapidly, so that the clean water in the second ring body that has absorbed heat is quickly discharged. This cycle is repeated to achieve rapid cooling of the semi-finished product.

[0024] When the driving roller pulls the semi-finished product, the semi-finished product first approaches the clean water containing heat and maintaining a certain temperature;

[0025] The water vapor formed by the clean water absorbing heat flows upward and enters the ends on both sides of the fold, and converges in the middle flow area of ​​the fold. After converging to a certain extent, it flows from the middle flow area to the gap, and the outflowing steam airflow flows along the bent trajectory of the front end for a distance to form an air outlet. The air outlet is at a lower pressure, and a pressure difference is formed between the air outlet and the place behind it near the air outlet. Under the action of the pressure difference, the air behind is continuously pushed toward the air outlet, and finally forms a wind flow blowing in the direction of the semi-finished product extruded by the plastic extruder.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention controls the rapid contraction and deformation of the airbag, thereby quickly sucking the clean water in the pool into the second ring body and contacting the semi-finished product to absorb the heat of the semi-finished product. The airbag is controlled to quickly expand and deform, thereby quickly discharging the clean water in the second ring body that has absorbed heat. This cycle is repeated, so that the clean water in the pool body quickly and intermittently flushes the semi-finished product, thereby achieving rapid cooling of the semi-finished product.

[0028] 2. In the present invention, during the rapid water absorption and drainage process, the discharged clean water containing heat approaches the position where the semi-finished product is extruded from the plastic extruder head. The temperature of the clean water in the pool gradually decreases from one side of the plastic extruder to the side of the driving roller. In the process of the driving roller pulling the semi-finished product, the semi-finished product is first close to the clean water containing heat and maintaining a certain temperature, thereby avoiding excessive temperature difference between the area where the semi-finished product quickly contacts the clean water and the area that does not contact the clean water, preventing excessive difference in synchronous shrinkage of the semi-finished product, and avoiding large deformation.

[0029] 3. The present invention utilizes the flap to use the steam airflow to form an airflow blowing in the direction of the semi-finished product extruded by the plastic extruder, and blows the airflow containing a little heat above the pool body to the semi-finished product extruded from the plastic extruder in advance, so as to pre-cool the semi-finished product, further avoid excessive temperature difference between the area where the semi-finished product quickly contacts the clean water and the area that does not contact the clean water, prevent excessive difference in synchronous shrinkage of the semi-finished product, and avoid large deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic structural diagram of a flame retardant plastic production device proposed by the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of a tank body and its interior in a flame-retardant plastic production device proposed by the present invention;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the inclined first ring body and its interior in a flame-retardant plastic production device proposed by the present invention;

[0033] Figure 4 This is a schematic structural diagram of a third ring body, a fourth ring body, and a plurality of gear levers in a flame-retardant plastic production device proposed by the present invention;

[0034] Figure 5 This is a schematic cross-sectional view of the third and fourth ring bodies in a flame-retardant plastic production device proposed by the present invention;

[0035] Figure 6 This is a structural schematic diagram of a flame-retardant plastic production device proposed by the present invention, in which the left side shows a rotating block blocking the flow slot and the right side shows a rotating block not blocking the flow slot;

[0036] Figure 7 This is a schematic diagram of the cross-sectional structure of a folding piece in a flame-retardant plastic production device proposed by the present invention;

[0037] Figure 8 This is a schematic structural diagram of the cross section of a folding piece in a flame retardant plastic production device proposed by the present invention.

[0038] In the figure: 1. Pool body; 2. Driving roller; 3. Mounting plate; 4. Through hole; 5. First ring body; 6. Second ring body; 7. First sealing cover; 8. Vacuum pump; 9. Inflating pump; 10. Air bag; 11. Air hole; 12. Third ring body; 13. Fourth ring body; 14. Second sealing cover; 15. Gear lever; 16. Flow groove; 17. Rotating block; 18. Rotating shaft; 19. Rotating hole; 20. Torsion spring; 21. Limiting ring; 22. Water-absorbing sponge; 23. Rotating roller; 24. Support block; 25. Baffle; 26. Folding piece; 27. Middle flow area; 28. Gap. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] Reference Attachment Figure 1 -Attached Figure 8A flame-retardant plastic production equipment includes a tank body 1 with clean water inside. One side of the tank body 1 is where long strips of semi-finished products are extruded from a plastic extruder, and the other side is provided with a power-driven drive roller 2. Specifically, one side of the tank body 1 is fixedly connected to a mounting plate 3, and two upper and lower opposing drive rollers 2 are provided on the mounting plate 3. When started, the two drive rollers 2 rotate in opposite directions, which can pull the semi-finished products to move in the tank body 1;

[0041] A mounting plate 3 is fixedly connected inside the pool body 1, and the mounting plate 3 has a plurality of through holes 4 and is fixedly connected to a first ring body 5. The first ring body 5 is arranged obliquely inside the pool body 1, and a second ring body 6 is arranged coaxially with the first ring body 5. The second ring body 6 is located inside the first ring body 5. The first ring body 5 and the second ring body 6 have the same length. Both ends between the first ring body 5 and the second ring body 6 are fixedly connected to a first annular cover 7 for blocking the clean water in the pool body 1 so that it does not enter the space between the first ring body 5 and the second ring body 6. An air pump 8 and an air pump 9 are fixedly installed on the inner wall of the first ring body 5. The air pump 8 is used to extract the gas in the first ring body 5 outward, and the air pump 9 is used to fill the gas outside the first ring body 5 inward;

[0042] An inflatable airbag 10 is provided on the inner wall of the second ring body 6. The airbag 10 is bonded to the circumferential inner wall of the second ring body 6 and is annular. The second ring body 6 is provided with a plurality of air holes 11. The air holes 11 are directly connected to the interior of the airbag 10. The inflation and deflation of the airbag 10 are achieved by the mutual cooperation of the air pump 8 and the air pump 9. The output end of the air pump 8 and the input end of the air pump 9 are connected by a pipe and extend above the pool body 1. The input end of the air pump 8 and the output end of the air pump 9 are both located between the first ring body 5 and the second ring body 6. The clean water in the pool body 1 cannot enter the pipe;

[0043] A third ring body 12 and a fourth ring body 13 are coaxially arranged on the second ring body 6. The third ring body 12 and the fourth ring body 13 are both located inside the second ring body 6 and at both ends of the second ring body 6. Two annular second sealing covers 14 are fixedly connected to both ends of the second ring body 6, and are respectively fixedly connected to the third ring body 12 and the fourth ring body 13. A plurality of gear levers 15 are fixedly connected between the third ring body 12 and the fourth ring body 13. The third ring body 12 is located at the end of the second ring body 6 that is tilted downward, and the fourth ring body 13 is located at the end of the second ring body 6 that is tilted upward.

[0044] At least one one-way flow component is provided on each of the third ring body 12 and the fourth ring body 13. That is, the third ring body 12 can allow the clean water in the pool body 1 to flow from the third ring body 12 into the second ring body 6 through the one-way flow component, and the fourth ring body 13 can allow the clean water in the second ring body 6 to be discharged from the fourth ring body 13 into the pool body 1 through the one-way flow component.

[0045] Specifically, the one-way flow component on the third ring body 12 includes a flow groove 16 provided in the third ring body 12, the flow groove 16 passes through the third ring body 12, and a rotating block 17 is provided inside the flow groove 16. The rotating block 17 can completely cover the cross-section of the flow groove 16, thereby preventing clean water from flowing in the flow groove 16. A pair of diagonal edges of the rotating block 17 are rounded, and both sides of the rotating block 17 are fixedly connected to the rotating shaft 18. The third ring body 12 provides a rotating hole 19 with the same aperture as the rotating shaft 18. The rotating shaft 18 is located inside the corresponding rotating hole 19 and is slidably connected to the rotating hole 19. A torsion spring 20 is further provided inside the rotating hole 19, and the two ends of the torsion spring 20 are respectively connected to the inner wall of the rotating hole 19 and the rotating shaft 18. Under the elastic force of the torsion spring 20, the rotating block 17 completely covers the cross-section of the flow groove 16;

[0046] Two limiting rings 21 are fixedly connected to the inner rings of the third ring body 12 and the fourth ring body 13. An annular water-absorbing sponge 22 is arranged between the two limiting rings 21. The diameter of the semi-finished product is the same as the inner diameter of the limiting rings 21. The water-absorbing sponge 22 surrounding the outer ring of the semi-finished product has a water-locking property, thereby preventing the clean water in the pool body 1 from flowing into or out of the second ring body 6 through the tiny gap between the limiting rings 21 and the semi-finished product.

[0047] A rotating roller 23 is connected and rotated in the tank body 1. The lower side of the rotating roller 23 corresponds to the extension direction of the virtual central axis of the third ring body 12. The semi-finished product passing through the third ring body 12 passes under the rotating roller 23 and is wound upwards and then passes between the two driving rollers 2, keeping the semi-finished product in the second ring body 6 and pulling it along the virtual central axis of the second ring body 6.

[0048] Support blocks 24 are fixed at the four corners above the pool body 1. The four support blocks 24 are fixedly connected to the baffle 25. A plurality of wind guide components are provided between the opening above the pool body 1 and the baffle 25. The hot air flow from the clean water in the pool body 1 absorbs heat and evaporates steam upward. The hot air flow is guided by the wind guide components and changes from the original upward airflow to the direction of the plastic extruder to extrude the semi-finished product.

[0049] Specifically, the wind guide component includes an inverted U-shaped fold 26, which is fixedly connected to the baffle 25. The fold 26 has a front end and a rear end, and the front end is bent toward the rear end and does not contact the rear end, forming an intermediate flow area 27 wrapped by the fold 26 and a gap 28 formed between the front end and the rear end. The upward steam airflow directly enters the intermediate flow area 27 and flows out from the gap 28. According to the Coanda effect, the steam airflow flowing out flows along the trajectory of the bent front end for a distance to form an air outlet. According to the Bernoulli principle, it can be known that the air pressure is low where the flow rate is large, and the air pressure is lower at the air outlet. A pressure difference is formed between the air outlet and the place behind it close to the air outlet. Under the action of the pressure difference, the air at the rear is continuously pushed toward the air outlet, and finally a wind flow is formed that blows in the direction of the plastic extruder to extrude the semi-finished product.

[0050] Working principle:

[0051] The long strip semi-finished product extruded from the plastic extruder head in front of the tank body 1 enters from the fourth ring body 13, passes through the multiple gear bars 15 and comes out from the third ring body 12, passes under the rotating roller 23 and bends upward from the tank body 1. It is pulled by the two driving rollers 2 at the rear of the tank body 1, so that the semi-finished product can move at a uniform speed in the tank body 1;

[0052] Start the inflation pump 9 and stop the exhaust pump 8, and air is rushed into the airbag 10 through the air hole 11, causing the airbag 10 to expand and deform, squeezing the clean water inside the second ring body 6 and causing the hydraulic pressure to rise, which can partially discharge the clean water inside the second ring body 6. The rotating block 17 on the fourth ring body 13 is subjected to the hydraulic pressure and rotates to overcome the elastic force of the torsion spring 20, thereby opening the flow groove 16 on the fourth ring body 13, and the clean water in the second ring body 6 is discharged from the second ring body 6, while taking away the heat of the semi-finished product in the second ring body 6;

[0053] Start the vacuum pump 8 and stop the inflation pump 9, sucking the gas inside the expanded and deformed airbag 10 out of the outside. The airbag 10 contracts and deforms, reducing the pressure inside the second ring body 6 and creating a negative pressure. The rotating block 17 on the third ring body 12 is affected by the negative pressure and overcomes the elastic force of the torsion spring 20 to rotate, thereby opening the flow groove 16 on the third ring body 12. The clean water in the pool body 1 quickly enters the second ring body 6 and absorbs the heat of the semi-finished product in the second ring body 6.

[0054] The airbag 10 is controlled to shrink and deform rapidly, thereby quickly drawing clean water from the pool body 1 into the second ring body 6 and contacting the semi-finished product to absorb heat from the semi-finished product. The airbag 10 is controlled to expand and deform rapidly, thereby quickly discharging the clean water that has absorbed heat from the second ring body 6. This cycle is repeated, so that the clean water in the pool body 1 quickly and intermittently flushes the semi-finished product, thereby achieving rapid cooling of the semi-finished product.

[0055] During the rapid water absorption and drainage process, the discharged clean water containing heat approaches the position where the semi-finished product is extruded from the plastic extruder head. The temperature of the clean water in the pool body 1 gradually decreases from the side of the plastic extruder to the side of the driving roller 2. In the process of the driving roller 2 pulling the semi-finished product, the semi-finished product first approaches the clean water containing heat and maintaining a certain temperature, thereby avoiding a large temperature difference between the area where the semi-finished product quickly contacts the clean water and the area that does not contact the clean water, preventing the semi-finished product from having too large a difference in synchronous shrinkage and avoiding large deformation;

[0056] Since the clean water absorbs heat, it will inevitably have water vapor flowing upward. The water vapor flows upward and enters the ends on both sides of the flap 26, and converges in the middle flow area 27 of the flap 26. After converging to a certain extent, it flows from the middle flow area 27 to the gap 28. Since the gap 28 is too small, a faster flow rate is generated after flowing out. The outflowing steam flow flows along the bent trajectory of the front end for a distance to form an air outlet, and the air pressure at the air outlet is lower. Then, an air pressure difference is formed between the air outlet and the area behind it near the air outlet. Under the action of the pressure difference, the air behind is continuously pushed toward the air outlet, and finally a wind flow is formed to blow in the direction of the semi-finished product extruded by the plastic extruder. The air flow containing a little heat above the pool body 1 is blown to the semi-finished product extruded from the plastic extruder in advance, so as to pre-cool the semi-finished product, further avoid excessive temperature difference between the area where the semi-finished product quickly contacts the clean water and the area that does not contact the clean water, prevent excessive difference in synchronous shrinkage of the semi-finished product, and avoid large deformation.

[0057] It should be noted that, due to the absorption of heat by the clean water, the clean water containing heat in the pool body 1 flows more to the upper layer, and the third ring body 12 and the fourth ring body 13 are arranged relatively tilted, so that the third ring body 12 absorbs the clean water with less heat in the bottom layer of the pool body 1, and the fourth ring body 13 discharges the clean water containing heat directly to the top layer of clean water. Compared with placing the semi-finished product directly in the pool body 1 for cooling, the present application forms a fast unidirectional flow of water by quickly absorbing and discharging clean water, which quickly flushes the area of ​​the semi-finished product within the second ring body 6 and takes away the heat. Unlike the semi-finished product that is directly cooled in contact with the stationary clean water, the heat of the semi-finished product is gradually transferred between the clean water at different distances during cooling. The present application completes the cooling of the semi-finished product more quickly.

[0058] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A flame retardant plastic production equipment, characterized in that, include: A tank body (1), wherein the tank body (1) contains clean water for cooling the semi-finished product; Two driving rollers (2) are relatively fixedly arranged on one side of the tank body (1), and the other side of the tank body (1) is the side where the long strip semi-finished product is extruded from the plastic extruder. When started, the two driving rollers (2) rotate in opposite directions to pull the semi-finished product to move in the tank body (1); A rapid cooling component is obliquely arranged in the pool body (1), with its upwardly inclined end facing the direction of the semi-finished product and its downwardly inclined end facing the direction of the semi-finished product. The rapid cooling component absorbs and drains water in a high-frequency cycle to rapidly cool the semi-finished product entering the rapid cooling component. The pool body (1) is fixedly connected to a mounting plate (3), the mounting plate (3) is provided with a plurality of through holes (4), the mounting plate (3) is fixedly connected to a first ring body (5), the first ring body (5) is arranged obliquely in the pool body (1), the first ring body (5) is coaxially provided with a second ring body (6), the second ring body (6) is located inside the first ring body (5), the first ring body (5) and the second ring body (6) are of the same length, both ends between the first ring body (5) and the second ring body (6) are fixedly connected to an annular first cover (7), an air pump (8) and an air pump (9) are fixedly installed on the inner wall of the first ring body (5), the air pump (8) can extract the gas in the first ring body (5) outwards, and the air pump (9) can fill the gas outside the first ring body (5) inwards; An inflatable airbag (10) is provided on the inner wall of the second ring body (6), the airbag (10) is bonded to the circumferential inner wall of the second ring body (6), the airbag (10) is annular, the second ring body (6) is provided with a plurality of air holes (11), the air holes (11) are directly connected to the interior of the airbag (10), the output end of the air pump (8) and the input end of the air pump (9) are connected through a pipe and extend to the top of the pool body (1), and the input end of the air pump (8) and the output end of the air pump (9) are both located between the first ring body (5) and the second ring body (6); The second ring body (6) is coaxially provided with a third ring body (12) and a fourth ring body (13); the third ring body (12) and the fourth ring body (13) are both located inside the second ring body (6) and are respectively located at two ends of the second ring body (6); at least one one-way flow component is provided on each of the third ring body (12) and the fourth ring body (13); the third ring body (12) can allow the clean water in the pool body (1) to enter the second ring body (6) from the third ring body (12) through the one-way flow component; and the fourth ring body (13) can allow the clean water in the second ring body (6) to be discharged from the pool body (1) from the fourth ring body (13) through the one-way flow component; The one-way flow component includes a flow groove (16) provided in the third ring body (12) or the fourth ring body (13), the flow groove (16) passes through the third ring body (12) or the fourth ring body (13), a rotating block (17) is provided inside the flow groove (16), a pair of diagonal edges of the rotating block (17) are rounded, both sides of the rotating block (17) are fixedly connected to a rotating shaft (18), the third ring body (12) is provided with a rotating hole (19) with the same aperture as the rotating shaft (18), the rotating shaft (18) is located inside the corresponding rotating hole (19) and is slidably connected to the rotating hole (19), a torsion spring (20) is further provided inside the rotating hole (19), and the two ends of the torsion spring (20) are respectively connected to the inner wall of the rotating hole (19) and the rotating shaft (18).

2. The flame retardant plastic production equipment according to claim 1, characterized in that: Two annular second sealing covers (14) are fixedly connected at both ends of the second ring body (6), and are respectively fixedly connected to the third ring body (12) and the fourth ring body (13). A plurality of shift rods (15) are fixedly connected between the third ring body (12) and the fourth ring body (13). The third ring body (12) is located at an end of the second ring body (6) that is tilted downward, and the fourth ring body (13) is located at an end of the second ring body (6) that is tilted upward.

3. The flame retardant plastic production equipment according to claim 2, characterized in that: Two limiting rings (21) are fixedly connected to the inner rings of the third ring body (12) and the fourth ring body (13), and an annular water-absorbing sponge (22) is arranged between the two limiting rings (21). The diameter of the semi-finished product is the same as the inner diameter of the limiting ring (21). A rotating roller (23) is rotatably connected in the pool body (1), and the lower side of the rotating roller (23) corresponds to the extension direction of the virtual central axis of the third ring body (12). The semi-finished product passing through the third ring body (12) passes under the rotating roller (23), is wound upward, and then passes between the two driving rollers (2).

4. The flame retardant plastic production equipment according to claim 3, characterized in that: Support blocks (24) are fixed at the four corners above the pool body (1), and the four support blocks (24) are fixedly connected to the baffle (25). A plurality of wind guide components are arranged between the opening above the pool body (1) and the baffle (25). The hot air flow from the clean water in the pool body (1) absorbs heat and evaporates steam upward is guided by the wind guide components and is converted from the original upward air flow to the direction of the semi-finished product extruded by the plastic extruder.

5. The flame retardant plastic production equipment according to claim 4, characterized in that: The wind guide component includes an inverted U-shaped folded piece (26), the folded piece (26) is fixedly connected to the baffle (25), and the folded piece (26) has a front end and a rear end, the front end is bent toward the rear end and does not contact the rear end, forming an intermediate flow area (27) wrapped by the folded piece (26) and a gap (28) formed between the front end and the rear end.

6. A method for processing flame retardant plastic production equipment, characterized in that: The flame retardant plastic production equipment according to claim 5 comprises the following steps: The long strip semi-finished product extruded from the plastic extruder head in front of the tank body (1) enters from the fourth ring body (13), passes between the multiple gear bars (15) and comes out from the third ring body (12), passes under the rotating roller (23) and bends upward from the tank body (1), and is pulled by the two driving rollers (2) at the rear of the tank body (1), so that the semi-finished product can move at a uniform speed in the tank body (1); The air pump (9) is started and the air pump (8) is stopped, and air is rushed into the air bag (10) through the air hole (11), so that the air bag (10) expands and deforms, squeezing the clean water inside the second ring body (6) to increase the hydraulic pressure, and partially discharging the clean water inside the second ring body (6). The rotating block (17) on the fourth ring body (13) is subjected to the hydraulic pressure and rotates to overcome the elastic force of the torsion spring (20), thereby opening the flow groove (16) on the fourth ring body (13), and the clean water in the second ring body (6) is discharged outside the second ring body (6), and at the same time, the heat of the semi-finished product in the second ring body (6) is taken away; The vacuum pump (8) is started and the inflation pump (9) is stopped, so that the gas inside the expanded and deformed airbag (10) is sucked out to the outside, and the airbag (10) contracts and deforms, so that the pressure inside the second ring body (6) decreases and negative pressure appears. The rotating block (17) on the third ring body (12) is affected by the negative pressure and overcomes the elastic force of the torsion spring (20) to rotate, thereby opening the flow groove (16) on the third ring body (12), and the clean water in the pool body (1) quickly enters the second ring body (6) and absorbs the heat of the semi-finished product in the second ring body (6); The airbag (10) is controlled to shrink and deform rapidly, thereby quickly drawing clean water from the pool body (1) into the second ring body (6) and contacting the semi-finished product to absorb heat from the semi-finished product; the airbag (10) is controlled to expand and deform rapidly, thereby quickly discharging the clean water that has absorbed heat from the second ring body (6); and this cycle is repeated to achieve rapid cooling of the semi-finished product; In the process of the driving roller (2) pulling the semi-finished product, the semi-finished product first approaches the clean water containing heat and maintaining a certain temperature; The water vapor formed by the heat absorbed by the clean water flows upward and enters the ends of both sides of the fold (26), and converges in the middle flow area (27) of the fold (26). After converging to a certain extent, it flows from the middle flow area (27) to the gap (28), and the outflowing steam airflow flows along the bent trajectory of the front end to a distance to form an air outlet. The air outlet is at a lower pressure, and a pressure difference is formed between the air outlet and the area behind it close to the air outlet. Under the action of the pressure difference, the air behind is continuously pushed toward the air outlet, and finally forms a wind flow blowing in the direction of the semi-finished product extruded by the plastic extruder.

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