A conveying device for flame-retardant masterbatch

Abstract

This invention provides a conveying device for flame-retardant masterbatch, belonging to the field of injection molding technology. It includes a receiving cylinder with a receiving hopper at its top, a stirring assembly inside the cylinder, an air supply jacket on the outer wall of the cylinder, and an air extraction assembly inside the cylinder. These components work together to stir and cool the masterbatch inside the cylinder and promptly extract hot and humid air. A discharge pipe is connected to the bottom of the receiving cylinder, and a discharge conveyor is horizontally positioned below the discharge pipe. A discharge gap is provided between the discharge conveyor and the discharge pipe. A condensation assembly is installed on the negative pressure pipe. The discharge conveyor includes a conveyor frame and a conveyor belt. The conveyor belt vibrates with a supporting mesh plate, removing dust and debris from the surface of the masterbatch, thus improving the output quality of the flame-retardant masterbatch.

Description

Technical Field

[0001] This invention relates to the field of injection molding technology, and more particularly to a transfer device for flame-retardant masterbatch. Background Technology

[0002] Flame retardant masterbatch is a high-concentration pre-dispersion of flame retardant, usually made into granules. With social development, people have put forward higher quality requirements for polymer plastic products such as packaging bags, instrument shells, and protective nets. Especially in cities with dense high-rise buildings, the losses caused by fire disasters are amplified. In order to meet the fireproof and flame retardant requirements of plastic and rubber products, it is necessary to add flame retardant masterbatch during the production process to improve the flame retardant effect of the products.

[0003] During the production process, the flame retardant masterbatch is extruded into strips by an extruder and then cooled in a cooling water tank. The strips are then sent to a drying equipment to dry, and finally the flame retardant is cut into granules. The flame retardant masterbatch is then transported and packaged.

[0004] However, during the process of slitting and extruding and conveying the flame retardant masterbatch, the forced extrusion and collision between the masterbatches can easily cause the masterbatches that have not been completely cooled to break, generating a large amount of debris and dust, which affects the quality of the flame retardant masterbatch obtained after transmission. Summary of the Invention

[0005] In view of the above problems, the present invention provides a conveying device for flame retardant masterbatch.

[0006] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0007] A conveying device for flame retardant masterbatch is provided, including a receiving cylinder, a receiving hopper at the top of the receiving cylinder, and a stirring assembly for stirring the masterbatch disposed below the receiving hopper inside the receiving cylinder. The stirring assembly includes a rotating cylinder coaxially rotatably disposed inside the receiving cylinder, and a stirring rod fixedly disposed on the outer wall of the rotating cylinder. The rotating cylinder is driven by a first driving member to rotate relative to the receiving cylinder.

[0008] The receiving cylinder is equipped with an air extraction assembly, which includes an air extraction cylinder coaxially inserted inside the rotating cylinder. The top of the air extraction cylinder is connected to a negative pressure pipe, which is connected to a negative pressure source. The air extraction cylinder is equipped with a collection assembly for filtering and collecting debris.

[0009] The bottom of the receiving cylinder is connected to the discharge pipe, and a discharge conveyor is horizontally installed below the discharge pipe. An arch-breaking component is installed inside the discharge pipe. A discharge gap is provided between the discharge conveyor and the discharge pipe. The discharge conveyor includes a conveyor frame, a conveyor belt is horizontally installed on the conveyor frame, and a vibration component for driving the conveyor belt to vibrate is installed on the conveyor frame.

[0010] Furthermore, the outer layer of the receiving cylinder is provided with a mounting frame, the rotating cylinder is rotatably mounted on the mounting frame, the bottom end of the rotating cylinder extends coaxially into the receiving cylinder, the first driving component is mounted on the mounting frame, the air extraction cylinder is fixedly mounted on the mounting frame, the rotating cylinder and the stirring rod are hollow, the air extraction cylinder is coaxially inserted into the rotating cylinder, an air passage gap is provided between the air extraction cylinder and the inner wall of the rotating cylinder, and an air extraction hole is opened on the outer wall of the air extraction cylinder.

[0011] Furthermore, an air supply jacket is provided on the outer wall of the receiving cylinder, and several air inlets are opened on the outer wall of the receiving cylinder. The air supply jacket is connected to the inside of the receiving cylinder through the air inlets. An air inlet pipe is connected to the outer wall of the air supply jacket, and a cooling air source is connected to the outside of the air inlet pipe.

[0012] Furthermore, a condensation assembly is provided on the negative pressure pipe. The condensation assembly includes a condensation sleeve, which is coaxially sleeved on the outside of the negative pressure pipe. An inlet pipe and an outlet pipe are respectively provided on the outer walls of both ends of the condensation sleeve. The condensation sleeve is used to pass the cooling medium. A guide groove is provided on the inner wall of the negative pressure pipe at the position covered by the condensation sleeve. A water-drawing strip is connected to the end of the guide groove near the negative pressure source. A water-drawing tank is threadedly connected to the outside of the negative pressure pipe below the guide groove. The water-drawing strip passes through each guide groove and enters the water-drawing tank.

[0013] Furthermore, two conveyor rollers are horizontally spaced on the conveyor frame, and the conveyor belt is wound around the two conveyor rollers and meshes with them for transmission. A second drive unit is provided on the conveyor frame to drive either conveyor roller to rotate.

[0014] Furthermore, a baffle plate is vertically slidably installed on the outer wall of the discharge pipe above the discharge gap, and a third driving component is installed on the receiving cylinder to drive the baffle plate to rise and fall.

[0015] Furthermore, the vibration assembly includes a support mesh plate mounted on the conveyor frame, the support mesh plate being supported below the upper mesh belt of the conveyor belt, and a fourth driving component mounted on the conveyor frame for driving the support mesh plate to vibrate vertically up and down.

[0016] Furthermore, the arch-breaking assembly includes an arch-breaking roller, which is rotatably disposed inside the discharge pipe. A fifth driving component for driving the arch-breaking roller to rotate is provided on the discharge pipe, and several arch-breaking rods are fixedly disposed on the outer wall of the arch-breaking roller.

[0017] Furthermore, the collection assembly includes a filter cartridge, a brush assembly, and a collection box. The filter cartridge is disposed between the rotating cylinder and the suction cylinder and is fixedly connected to the rotating cylinder. The brush assembly is spirally disposed on the outer wall of the suction cylinder and contacts the filter cartridge. The bottom of the filter cartridge is open. The collection box is fixedly connected to the bottom of the suction cylinder and is rotatably connected to the bottom of the rotating cylinder.

[0018] Furthermore, the bottom of the collection box has a through opening, and a discharge wheel for closing the bottom opening of the collection box is provided inside the collection box with damping rotation. A discharge groove is provided on the outer wall of the discharge wheel, and multiple discharge grooves are arranged at intervals along the circumference of the discharge wheel. A toggle rod is fixedly provided on the arch breaking roller, and the discharge wheel is driven to rotate by cooperating with the discharge groove through the toggle rod.

[0019] The beneficial effects of the present invention are as follows: 1. By setting a stirring component in the receiving cylinder, the flame retardant masterbatch falling into the receiving cylinder is stirred, and the flame retardant masterbatch with obviously unstable molding structure is broken by collision. The generated fine debris is sucked in by the exhaust component and filtered and collected by the collection component. The generated dust is removed by the exhaust component. The masterbatch in the receiving cylinder is discharged to the discharge conveyor by the arch breaking component. On the discharge conveyor, the masterbatch is vibrated again by the conveyor belt to remove the dust and debris adhering to the surface of the masterbatch, thereby improving the appearance quality of the output flame retardant masterbatch.

[0020] 2. Combined with the air supply jacket, cold air is provided to cool the masterbatch in the receiving cylinder, which accelerates the cooling and shaping of the masterbatch and reduces the breakage caused by the stirring component in the receiving cylinder of the flame retardant masterbatch. When the flame retardant masterbatch is broken, the internal moisture and heat will be released. The cold air is used to cool the environment inside the receiving cylinder. Combined with the suction component, the moisture and heat in the receiving cylinder are extracted in time to avoid the dust generated when the masterbatch is broken from adhering to other masterbatches and the inner wall of the receiving cylinder, thereby improving the yield of the flame retardant masterbatch produced.

[0021] 3. While the suction component draws in the humid and hot air and dust and debris in the material cylinder, it also filters the adsorbed debris. The debris is collected by the brush and collection box structure. Then, the discharge wheel and the agitator work together to break up and clear the blockage of the masterbatch in the discharge pipe and discharge the debris. This can maintain the suction effect of the suction component for a long time. At the same time, it intercepts large particles of debris and discharges them synchronously with the masterbatch, reducing the filtration burden on the air at the negative pressure source.

[0022] 4. After extrusion and pelletizing, the flame retardant masterbatch is cooled and dried, and then falls smoothly into the discharge pipe. During the cooling and drying process, the fragments of the crushed masterbatch are collected and discharged. With the help of the arch-breaking component, the masterbatch is ensured to pass smoothly through the discharge pipe to the discharge conveyor. On the discharge conveyor, the discharged crushed masterbatch fragments are vibrated and filtered to obtain dispersed and complete flame retardant masterbatch. The masterbatch is then conveyed by belt drive to avoid large accumulation and compression of the masterbatch. All of the above settings are designed to obtain dispersed and complete flame retardant masterbatch and to maintain the dispersed and complete state of the masterbatch during transportation, thereby obtaining high-quality flame retardant masterbatch. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the transmission device according to an embodiment of this application.

[0024] Figure 2 for Figure 1 A magnified view of part A in the diagram.

[0025] Figure 3 This is a schematic diagram of the internal structure of the receiving cylinder according to an embodiment of this application.

[0026] Figure 4 This is a partial cross-sectional view of the rotating cylinder and filter cylinder according to an embodiment of this application.

[0027] Figure 5 This is a cross-sectional view of the negative pressure pipe and water tank according to an embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the discharge conveyor according to an embodiment of this application.

[0029] The components are as follows: 1. Receiving cylinder; 11. Receiving hopper; 12. Air supply jacket; 121. Air inlet; 13. Discharge pipe; 14. Discharge gap; 15. Baffle plate; 16. Third drive component; 21. Rotating cylinder; 22. Mounting frame; 23. First drive component; 24. Stirring rod; 31. Air extraction cylinder; 32. Air extraction hole; 33. Negative pressure pipe; 34. Guide channel; 35. Water tank; 36. Water extraction bar; 41. Condensation sleeve; 51. Conveyor frame; 52. Conveyor belt; 53. Second drive component; 54. Support mesh plate; 55. Fourth drive component; 61. Arch breaking roller; 62. Arch breaking rod; 63. Fifth drive component; 64. Agitator rod; 71. Filter cartridge; 72. Brush; 73. Collection box; 74. Discharge wheel; 75. Discharge chute. Detailed Implementation

[0030] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0031] This application discloses a conveying device for flame-retardant masterbatch, referring to... Figure 1 , Figure 2 and Figure 3 This invention aims to solve the problem of unstable flame retardant masterbatches being broken during transport due to forced extrusion, resulting in impurities and dust in the final transported flame retardant masterbatches that affect their appearance quality. It mainly includes a receiving cylinder 1 for receiving flame retardant masterbatches obtained through extrusion, water cooling, and cutting. The top of the receiving cylinder 1 is equipped with a receiving hopper 11 for receiving flame retardant masterbatches produced by upstream equipment, such as a pelletizer. Inside the receiving cylinder 1, directly below the receiving hopper 11, is a stirring assembly. This stirring assembly continuously agitates the masterbatches falling into the receiving cylinder 1 and breaks up masterbatches with highly unstable molding structures within the cylinder 1, preventing them from breaking apart during subsequent transport and affecting the appearance quality of the resulting flame retardant masterbatch product.

[0032] Specifically, the mixing assembly includes a vertically arranged rotating cylinder 21. A mounting frame 22 is provided on the outer top of the receiving cylinder 1, and the rotating cylinder 21 is rotatably mounted on the mounting frame 22 via bearings and other components. The bottom end of the rotating cylinder 21 extends coaxially downward into the interior of the receiving cylinder 1. A first driving member 23 for driving the rotating cylinder 21 to rotate is provided on the mounting frame 22. This first driving member 23 can be an electric motor with a reducer, and its output shaft is connected to the rotating cylinder 21 via gear transmission or chain transmission. Multiple stirring rods 24 are fixedly installed on the outer wall of the rotating cylinder 21 located inside the receiving cylinder 1. These stirring rods 24 are distributed radially or spirally to expand their mixing range within the receiving cylinder 1.

[0033] This invention integrates an air-cooling structure into the receiving cylinder 1. A sealed air supply jacket 12 is wrapped around the outer wall of the receiving cylinder 1. Several air inlets 121 are perforated through the cylinder wall of the receiving cylinder 1, through which the air supply jacket 12 communicates with the internal space of the receiving cylinder 1. At least one air inlet pipe is connected to the outer wall of the air supply jacket 12, which is used to connect to an external cooling air source, such as a cooling fan or compressed air system. Cold air or cooling gas enters the air supply jacket 12 through the air inlet pipe, and is then injected into the interior of the receiving cylinder 1 through the multiple air inlets 121, thereby forcibly cooling the tumbling masterbatch. By air-cooling the masterbatch in the receiving cylinder 1, the cooling and shaping rate of the masterbatch in the receiving cylinder 1 can be accelerated. Except for masterbatch with extremely unstable structure that will be broken by the stirring component, masterbatch with a certain structural strength can maintain its shape and continue to be conveyed to the discharge conveyor.

[0034] Reference Figure 4Meanwhile, to prevent dust carried by the cooling gas from spilling out during the mixing and blowing cooling of the masterbatch, an air extraction component is also provided inside the receiving cylinder 1. In a preferred embodiment, this air extraction component is integrated with the mixing component. Specifically, the air extraction component includes an air extraction cylinder 31, which is fixed on the mounting frame 22 and coaxially arranged with the rotating cylinder 21. Both the rotating cylinder 21 and the mixing rod 24 adopt a hollow structure design, forming a connected airflow channel inside. The air extraction cylinder 31 coaxially enters the interior of the rotating cylinder 21 from the top, and a certain distance is maintained between the outer wall of the air extraction cylinder 31 and the inner wall of the rotating cylinder 21, thereby forming a cylindrical air passage gap. Multiple extraction holes 32 are provided on the outer wall of the portion of the extraction cylinder 31 located inside the rotating cylinder 21. A negative pressure pipe 33 is connected to the top of the extraction cylinder 31. This negative pressure pipe 33 is connected to a negative pressure source, such as an air pump. Dust removal equipment, such as a bag filter, can also be installed in front of the negative pressure source to remove and purify dust from the gas. Under negative pressure, air and dust in the receiving cylinder 1 pass through the hollow channel between the stirring rod 24 and the rotating cylinder 21, through the air gap, and are then drawn into the extraction holes 32 on the extraction cylinder 31, and finally discharged through the negative pressure pipe 33. This design achieves simultaneous air blowing cooling, air extraction, dehumidification, and dust removal while stirring.

[0035] Reference Figure 5 Because the extracted gas contains water vapor, it easily condenses into cooling water when it encounters cold air inside the negative pressure pipe 33. Pumping this water into the negative pressure source can easily affect the normal operation of the equipment. Therefore, in this embodiment, a condensation assembly is provided on the negative pressure pipe 33. The condensation assembly includes a condensation sleeve 41, which is coaxially sleeved on the outside of the negative pressure pipe 33. Inlet pipes and outlet pipes are respectively provided on the outer walls of both ends of the condensation sleeve 41 for introducing circulating cooling medium, such as cooling water.

[0036] Specifically, a condenser sleeve 41 is installed on a vertically arranged section of the negative pressure pipe 33, through which air flows from top to bottom. The negative pressure pipe 33, located on the inner wall of the section covered by the condenser sleeve 41, has guide grooves 34 along its length, with multiple grooves circumferentially arranged. At the end of the guide groove 34 near the negative pressure source, downstream of the airflow direction, a highly absorbent water-collecting strip 36, such as a sponge strip or fiber rope, is connected. The water-collecting strip 36 is arranged in a circle on the inner wall of the negative pressure pipe 33, allowing it to pass through each guide groove 34. Outside the negative pressure pipe 33, below the lowest point of the guide groove 34, a detachable water-collecting tank 35 is threadedly connected. One end of the water-collecting strip 36 passes through the wall of the negative pressure pipe 33 and extends into the water-collecting tank 35. In this way, when the water vapor in the gas condenses into water droplets on the inner wall of the low-temperature negative pressure pipe 33, it will collect along the spiral guide groove 34 and be absorbed by the water-absorbing strip 36, and finally be guided to the water-absorbing tank 35 for collection, effectively dehumidifying the gas in the negative pressure pipe 33.

[0037] After being stirred, dispersed, cooled, and dehumidified in the receiving cylinder 1, the flame retardant masterbatch is finally discharged from the discharge pipe 13 at the bottom of the receiving cylinder 1. Below the discharge pipe 13, a discharge conveyor is horizontally installed. The conveying surface of the discharge conveyor maintains a certain vertical distance from the lower end of the discharge pipe 13, forming a discharge gap 14. As the discharge conveyor rotates, the masterbatch is spread out evenly from the discharge gap 14, ensuring uniform output of the masterbatch.

[0038] In one specific embodiment, refer to Figure 6 The discharge conveyor includes a conveyor frame 51. Two conveyor rollers, a drive roller and a driven roller, are horizontally spaced on the conveyor frame 51, and a conveyor mesh belt 52 is wound around the two conveyor rollers. The conveyor mesh belt 52 meshes with the conveyor rollers for transmission, for example, using a chain-plate mesh belt to ensure operational stability. A second drive component 53, such as a motor, is provided on the conveyor frame 51 to drive one of the conveyor rollers to rotate. The mesh belt design facilitates the further shaking off of dust and debris generated on the surface of the masterbatch during pelleting and mixing during the conveying process, preventing dust and debris from accumulating on the device during output and causing blockages or jams, and reducing the impact of dust and debris adhesion on product quality.

[0039] To control the amount of material output by the conveyor belt 52 during operation, a slide rail is provided on the outer wall of the discharge pipe 13, above the discharge gap 14, and a baffle plate 15 is vertically slidably mounted on the slide rail. A third driving component 16, such as an electric push rod or a cylinder, is provided on the receiving cylinder 1 or the discharge pipe 13 to drive the baffle plate 15 to rise and fall. By adjusting the height of the baffle plate 15, the actual opening size of the discharge gap 14 can be changed, thereby controlling the discharge flow rate.

[0040] Furthermore, in order to effectively remove dust and debris attached to the masterbatch on the conveyor belt 52, a vibration assembly for driving the conveyor belt 52 to vibrate is provided on the conveyor frame 51. Specifically, a support mesh plate 54 is provided on the conveyor frame 51, below the upper mesh belt of the conveyor belt 52. The support mesh plate 54 supports the conveyor belt 52 and is vertically raised and lowered while maintaining a horizontal position on the conveyor frame 51. A fourth driving component 55 is provided on the support mesh plate 54 for driving its own vertical vibration. The fourth driving component 55 can be a vibration motor installed on the support mesh plate 54. The support mesh plate 54 is raised and lowered on the conveyor frame 51 by a spring. The vibration motor drives the support mesh plate 54 to vibrate, thereby vibrating the masterbatch on the conveyor belt 52, vibrating and removing dust and debris attached to the surface of the masterbatch, and improving the dust removal and filtration effect on the output flame-retardant masterbatch. In other embodiments, the fourth drive element 55 can also be an electric motor, with its output shaft connected to a cam. The support mesh plate 54 is also supported by springs and mounted on the conveyor frame 51. The springs push the support mesh plate 54 into contact with the cam, and the cam and spring work together to repeatedly push / press the support mesh plate 54, thereby driving the support mesh plate 54 to reciprocate. A dust collection hopper is provided on the conveyor frame 51 below the conveyor belt 52 to collect dust and debris for centralized discharge.

[0041] Furthermore, to prevent the masterbatch from arching and clogging due to accumulation in the discharge pipe 13, an arch-breaking assembly is provided inside the discharge pipe 13. In this embodiment, the arch-breaking assembly includes a horizontally rotating arch-breaking roller 61. A fifth driving member 63 for driving the arch-breaking roller 61 to rotate is provided on the outer wall of the discharge pipe 13. The fifth driving member 63 can be an electric motor installed on the outer wall of the discharge pipe 13, and its output shaft is connected to the rotating shaft of the arch-breaking roller 61 through a reducer. Several radially extending arch-breaking rods 62 are fixedly provided on the outer wall of the arch-breaking roller 61. When the arch-breaking roller 61 rotates slowly, the arch-breaking rods 62 continuously agitate the masterbatch falling in the receiving cylinder 1, effectively destroying the supporting force between the masterbatch and ensuring smooth discharge from the discharge pipe 13.

[0042] To further improve dust removal efficiency and achieve automatic cleaning, in an improved embodiment, the extraction cylinder 31 is equipped with a collection assembly for filtering and collecting debris. The collection assembly includes a filter cartridge 71, a brush assembly 72, and a collection box 73. The filter cartridge 71 is cylindrical and positioned between the rotating cylinder 21 and the extraction cylinder 31. The top of the filter cartridge 71 is fixedly connected to the inner wall of the rotating cylinder 21, and the bottom of the filter cartridge 71 is fixedly connected to the rotating cylinder 21 via multiple spaced support rods, allowing the filter cartridge 71 to rotate with the rotating cylinder 21. The brush assembly 72 is spirally positioned along the axial direction of the extraction cylinder 31 on its outer wall, with the bristles on the brush assembly 72 in close contact with the inner or outer wall of the filter cartridge 71. The bottom of the filter cartridge 71 is open, and the collection box 73 is fixedly connected to the bottom of the extraction cylinder 31. The collection box 73 is rotatably connected to the bottom of the rotating cylinder 21 via bearings, and the top of the collection box 73 has multiple discharge holes that communicate with the air gap. During the process of dispersing and stirring the masterbatch by rotating the drum 21, the filter cartridge 71 remains in contact with the brush assembly 72. The brush assembly 72 pushes the debris attached to the filter cartridge 71 between the filter cartridge 71 and the rotating drum 21. As the brush assembly 72 continues to rotate, it pushes the debris downwards until it falls into the collection box 73 for collection. This effectively maintains the cleanliness of the filter cartridge 71 and the air extraction effect inside the connecting drum 1.

[0043] Furthermore, the bottom of the collection box 73 has a through opening, and a discharge wheel 74 is damped and rotatably mounted at this opening. Multiple axially extending discharge grooves 75 are spaced circumferentially on the outer wall of the discharge wheel 74. As the discharge wheel 74 rotates, the discharge grooves 75 enter / exit the collection box 73, thereby discharging the debris collected in the collection box 73. Dust collected in the collection box 73 falls into the discharge grooves 75. To drive the discharge wheel 74 to automatically discharge, a lever 64 can be fixedly mounted at the end of the anti-arching roller 62. When the anti-arching roller 61 rotates, the lever 64 rotates accordingly. The rotation of the lever 64 engages with the discharge grooves 75 on the discharge wheel 74, causing the discharge wheel 74 to rotate through an angle, rotating one of the discharge grooves 75 out of the collection box 73, thereby discharging the debris collected in the collection box 73.

[0044] Those skilled in the art will understand that although preferred embodiments of the invention have been described, those skilled in the art, once they understand the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the claims of the invention and their equivalents, the invention also intends to include these modifications and modifications.

Claims

1. A conveying device for flame-retardant masterbatches, characterized in that: The device includes a receiving cylinder (1), a receiving hopper (11) is provided at the top of the receiving cylinder (1), and a stirring assembly for stirring masterbatch is provided inside the receiving cylinder (1) below the receiving hopper (11). The stirring assembly includes a rotating cylinder (21) coaxially rotatably disposed inside the receiving cylinder (1). A stirring rod (24) is fixedly disposed on the outer wall of the rotating cylinder (21). The rotating cylinder (21) is driven by a first driving member (23) to rotate relative to the receiving cylinder (1). The receiving cylinder (1) is provided with an air extraction assembly, which includes an air extraction cylinder (31) coaxially inserted in the rotating cylinder (21). The top of the air extraction cylinder (31) is connected to a negative pressure pipe (33), and the negative pressure pipe (33) is connected to a negative pressure source. The air extraction cylinder (31) is provided with a collection assembly for filtering and collecting debris. The bottom of the receiving cylinder (1) is connected to the discharge pipe (13), and a discharge conveyor is horizontally arranged below the discharge pipe (13). An arch-breaking component is arranged inside the discharge pipe (13). A discharge gap (14) is arranged between the discharge conveyor and the discharge pipe (13). The discharge conveyor includes a conveyor frame (51). A conveyor belt (52) is horizontally arranged on the conveyor frame (51). A vibration component for driving the conveyor belt (52) to vibrate is arranged on the conveyor frame (51). The arch-breaking assembly includes an arch-breaking roller (61), which is rotatably disposed inside the discharge pipe (13). The discharge pipe (13) is provided with a fifth driving member (63) for driving the arch-breaking roller (61) to rotate. Several arch-breaking rods (62) are fixedly disposed on the outer wall of the arch-breaking roller (61). The collection assembly includes a filter cartridge (71), a brush assembly (72), and a collection box (73). The filter cartridge (71) is disposed between the rotating cylinder (21) and the suction cylinder (31), and the filter cartridge (71) is fixedly connected to the rotating cylinder (21). The brush assembly (72) is spirally disposed on the outer wall of the suction cylinder (31), and the brush assembly (72) contacts the filter cartridge (71). The bottom of the filter cartridge (71) is open. The collection box (73) is fixedly connected to the bottom of the suction cylinder (31), and the collection box (73) is connected to the rotating cylinder. (21) is rotatably connected to the bottom. The bottom of the collection box (73) has a through opening. The collection box (73) is equipped with a damping rotatable discharge wheel (74) for closing the bottom opening of the collection box (73). The outer wall of the discharge wheel (74) is provided with a discharge groove (75). Multiple discharge grooves (75) are arranged at intervals along the circumference of the discharge wheel (74). A toggle rod (64) is fixedly provided on the arch-breaking roller (61). The toggle rod (64) cooperates with the discharge groove (75) to drive the discharge wheel (74) to rotate.

2. A conveying device for flame-retardant masterbatch according to claim 1, characterized in that, The receiving cylinder (1) is provided with an mounting frame (22) on its outer layer. The rotating cylinder (21) is rotatably mounted on the mounting frame (22). The bottom end of the rotating cylinder (21) extends coaxially into the receiving cylinder (1). The first driving member (23) is mounted on the mounting frame (22). The air extraction cylinder (31) is fixedly mounted on the mounting frame (22). The rotating cylinder (21) and the stirring rod (24) are hollow. The air extraction cylinder (31) is coaxially inserted into the rotating cylinder (21). An air passage gap is provided between the air extraction cylinder (31) and the inner wall of the rotating cylinder (21). An air extraction hole (32) is opened on the outer wall of the air extraction cylinder (31).

3. The conveying device for flame-retardant masterbatch according to claim 2, characterized in that, An air supply jacket (12) is provided on the outer wall of the receiving cylinder (1). Several air inlets (121) are provided on the outer wall of the receiving cylinder (1). The air supply jacket (12) is connected to the inside of the receiving cylinder (1) through the air inlets (121). An air inlet pipe is connected to the outer wall of the air supply jacket (12), and a cooling air source is connected to the outside of the air inlet pipe.

4. The conveying device for flame-retardant masterbatch according to claim 3, characterized in that, A condensing assembly is provided on the negative pressure pipe (33). The condensing assembly includes a condensing sleeve (41). The condensing sleeve (41) is coaxially sleeved on the outside of the negative pressure pipe (33). An inlet pipe and an outlet pipe are respectively provided on the outer walls of both ends of the condensing sleeve (41). The condensing sleeve (41) is used to pass a cooling medium. A guide groove (34) is provided on the inner wall of the negative pressure pipe (33) at the position covered by the condensing sleeve (41). A water-drawing strip (36) is connected to one end of the guide groove (34) near the negative pressure source. A water-drawing tank (35) is threadedly connected to the outside of the negative pressure pipe (33) below the guide groove (34). The water-drawing strip (36) passes through each guide groove (34) and then enters the water-drawing tank (35).

5. A conveying device for flame-retardant masterbatch according to claim 3, characterized in that, Two conveyor rollers are horizontally spaced on the conveyor frame (51). The conveyor belt (52) is wound around the two conveyor rollers and meshes with them for transmission. A second drive unit (53) is provided on the conveyor frame (51) for driving any one of the conveyor rollers to rotate.

6. A conveying device for flame-retardant masterbatch according to claim 5, characterized in that, A baffle plate (15) is vertically slidably arranged on the outer wall of the discharge pipe (13) above the discharge gap (14), and a third driving component (16) is provided on the receiving cylinder (1) for driving the baffle plate (15) to rise and fall.

7. A conveying device for flame-retardant masterbatch according to claim 5, characterized in that, The vibration assembly includes a support mesh plate (54) mounted on the conveyor frame (51), the support mesh plate (54) being supported below the upper mesh belt of the conveyor belt (52), and a fourth driving member (55) mounted on the conveyor frame (51) for driving the support mesh plate (54) to vibrate vertically.

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