Plastic powder flame retardant drying device

Abstract

The utility model is suitable for the technical field of flame retardant production, provides a kind of plastic powder flame retardant drying device, including cylinder component, rotating component and the material guiding component being arranged in the inside of cylinder component, the cylinder component includes feed cylinder, drying cylinder, the material guiding component includes the material guiding part of feeding, drying material guiding part and the material guiding part of unloading being arranged along drying cylinder, the material guiding part of feeding includes inclined material guiding plate and material guiding groove, the drying material guiding part includes the main material guiding piece and auxiliary material guiding piece being arranged symmetrically about drying cylinder midline, the auxiliary material guiding piece is inclined to set relative main material guiding piece.This device solves the problem that only stirring cannot avoid the accumulation of flame retardant, thereby affecting the uniformity of flame retardant product drying, achieves by sequentially setting material guiding part of feeding, drying material guiding part and the material guiding part of unloading inside drying cylinder, so that flame retardant rotates gradually dispersed, reduce the accumulation of flame retardant, improve the effect of drying uniformity.

Description

Technical Field

[0001] This utility model relates to the field of flame retardant production technology, and more specifically, it relates to a drying device for plastic powder flame retardants. Background Technology

[0002] Plastic powder flame retardants are a class of chemical additives used to inhibit the combustion of plastics. They are mainly added to plastics through physical mixing or chemical bonding to reduce their flammability. During the production process of plastic powder flame retardants, the flame retardant obtained after the raw materials have reacted needs to be further dried before it can be pulverized and added to the plastic.

[0003] Patent CN222849666U discloses a flame retardant drying device. A spiral stirring blade is provided on the outer circumference of the stirring shaft. The lower edge of the spiral stirring blade contacts and engages with the lower sealing plate. When the stirring shaft rotates, the spiral stirring blade scoops up the flame retardant. As the stirring shaft continues to rotate, the flame retardant falls from the upper edge of the spiral stirring blade. During this falling process, the air permeability between flame retardants becomes very good, and there is no problem of clumping. The air from the fan can better remove the moisture in the flame retardant, which can shorten the drying time of the flame retardant and make the flame retardant dry more evenly.

[0004] Although the aforementioned device can agitate the flame retardant during the drying process using a spiral stirring plate, thereby shortening the drying time, the stirring alone cannot ensure uniform distribution of the flame retardant within the cylindrical shell. Accumulation of the flame retardant during the drying process still leads to insufficient drying, thus affecting the uniformity of the finished flame retardant product. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a plastic powder flame retardant drying device that, by sequentially arranging a feeding guide, a drying guide, and a discharging guide inside the drying cylinder, allows the flame retardant to be gradually dispersed during the drying process as it rotates with the drying cylinder, thereby reducing flame retardant accumulation and improving drying uniformity.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A plastic powder flame retardant drying device includes a base assembly, a cylinder assembly mounted on the base assembly, a rotating assembly, a discharge assembly, and a material guiding assembly disposed inside the cylinder assembly. The cylinder assembly includes a feed cylinder, a drying cylinder, and a discharge hole disposed at one end of the drying cylinder. The material guiding assembly includes an infeed guiding part, a drying guiding part, and a discharge guiding part disposed along the axial direction of the drying cylinder on the inner wall of the drying cylinder. The infeed guiding part includes an inclined guiding plate and an infeed guiding groove disposed around the inner wall of the drying cylinder. The drying guiding part includes a main material component symmetrically disposed about the centerline of the drying cylinder and an auxiliary material guiding component mounted on the main material component. The auxiliary material guiding component is inclined relative to the main material component.

[0008] The present invention is further configured such that: the drying cylinder is continuously provided with a plurality of main material components along the axial direction, the main material components including a first material plate and a second material plate connected to each other, the first material plate and the second material plate being arranged perpendicular to each other.

[0009] By adopting the above technical solution

[0010] The present invention is further configured such that: the auxiliary guide includes an inclined plate and horizontal plates disposed at both ends of the inclined plate, the angle between the inclined plate and the main guide is 45°, and the horizontal plate on the inclined plate near the main guide is connected to the main guide.

[0011] The present invention is further configured such that: the inclined guide plate is disposed on the inner wall of the drying cylinder near the feed cylinder, the inclined guide plate is spirally arranged around the inner wall of the drying cylinder, and the feed guide groove is disposed on the inner wall of the drying cylinder near the drying guide section, the feed guide groove is equidistantly arranged around the inner wall of the drying cylinder.

[0012] The present invention is further configured such that: the material feeding guide is disposed on the inner wall of the drying cylinder near the discharge assembly, and the material feeding guide is equidistantly arranged around the inner wall of the drying cylinder.

[0013] The present invention is further configured such that: the rotating assembly includes a drive motor mounted on the base assembly, a driven gear ring mounted on the drying cylinder, and auxiliary rings mounted at both ends of the drying cylinder; the output end of the drive motor is connected to a drive gear, and the drive gear meshes with the driven gear ring.

[0014] The present invention is further configured such that: the discharge assembly includes a discharge chamber disposed at the end of the drying cylinder and a discharge cavity disposed at the bottom of the discharge chamber, the top of the discharge chamber is provided with an air outlet, and the bottom of the discharge cavity is connected to a discharge pipe.

[0015] The present invention is further configured such that: a door is rotatably mounted on the feed cylinder, and a connection port is provided on the door; and the drying cylinder is rotatably mounted on the feed cylinder.

[0016] The beneficial effects of this utility model are:

[0017] After entering the drying cylinder, the flame retardant moves forward spirally with the cylinder's rotation. First, it is guided by an inclined guide plate and then spirals into the feed chute for initial dispersion. It then continues into the drying guide section, where the flame retardant is further dispersed by channels at different angles created by the continuously arranged main and auxiliary guide components, ensuring full contact with hot air for drying. Finally, it enters the discharge guide section, where it is guided to complete the final drying process. This step-by-step dispersion through the feed, drying, and discharge guide sections reduces flame retardant accumulation and improves drying uniformity during the drying process. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of the plastic powder flame retardant drying device of this utility model.

[0020] Figure 2 for Figure 1 The diagram shows the structure of the base assembly.

[0021] Figure 3 for Figure 1 The diagram shows the structure of the cylinder assembly and the discharge assembly.

[0022] Figure 4 for Figure 3 The top view shown.

[0023] Figure 5 for Figure 3 The diagram shows the internal structure of the cylindrical assembly and the discharge assembly.

[0024] Figure 6 for Figure 5 The front view shown.

[0025] Figure 7 For along Figure 4 A cross-sectional view showing section line AA.

[0026] Explanation of reference numerals in the attached drawings: 1. Base assembly; 11. Support frame; 12. Mounting bracket; 13. Limiting bracket;

[0027] 2. Cylinder assembly; 21. Feed cylinder; 22. Rotating component; 23. Door; 24. Connection port; 25. Drying cylinder; 26. Drying chamber; 27. Auxiliary mounting bracket; 28. Discharge hole;

[0028] 3. Rotating assembly; 31. Drive motor; 32. Driving gear; 33. Driven gear ring; 34. Auxiliary ring; 35. Auxiliary wheel; 36. Auxiliary frame;

[0029] 4. Material guiding assembly; 41. Feeding guide section; 411. Inclined guide plate; 412. Feeding guide trough; 42. Drying guide section; 421. Main material component; 4211. First material plate; 4212. Second material plate; 422. Auxiliary material guiding component; 4221. Inclined plate; 4222. Horizontal plate; 43. Discharge guide section; 431. Guide trough; 432. Side plate;

[0030] 5. Discharge assembly; 51. Discharge chamber; 52. Air outlet; 53. Feeding chamber; 54. Feeding pipe. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Please refer to Figure 1 and Figure 6 A drying device for plastic powder flame retardant includes a base assembly 1, a cylindrical assembly 2 mounted on the base assembly 1, a rotating assembly 3, a discharge assembly 5, and a guiding assembly 4 disposed inside the cylindrical assembly 2. After the flame retardant is added into the cylindrical assembly 2, the rotating assembly 3 drives the cylindrical assembly 2 to rotate. As the cylindrical assembly 2 rotates and spirals forward, the flame retardant is guided and evenly dispersed by the guiding assembly 4, allowing the flame retardant to fully contact the hot air and dry evenly. Finally, the material is discharged through the discharge assembly 5.

[0033] Please refer to Figure 1-2 The base assembly 1 includes a mounting frame 12 and support frames 11 disposed at the bottom of the mounting frame 12. The mounting frame 12 is horizontally arranged, and multiple support frames 11 are vertically installed at the bottom of the mounting frame 12. Limiting frames 13 are symmetrically arranged at both ends of the mounting frame 12, and the limiting frames 13 are inclined towards the center of the mounting frame 12. The limiting frame 13 at one end of the mounting frame 12 is connected to the cylinder assembly 2, and the cylinder assembly 2 is inclined at the mounting frame 12. The inclination angle between the cylinder assembly 2 and the mounting frame 12 is 5-10°. The limiting frame 13 at the other end of the mounting frame 12 is connected to the discharge assembly 5.

[0034] Please refer to Figure 3-7The cylinder assembly 2 includes a feed cylinder 21, a drying cylinder 25, and a discharge port 28 located at one end of the drying cylinder 25. The drying cylinder 25 is located near the discharge assembly 5 and is rotatably mounted on the feed cylinder 21. One end of the drying cylinder 25 extends to form a connecting cylinder, which is rotatably mounted inside the feed cylinder 21. A drying chamber 26 for drying the flame retardant is formed inside the drying cylinder 25, and the drying chamber 26 communicates with the inside of the feed cylinder 21. A door 23 is rotatably mounted on the feed cylinder 21, located on the side away from the drying cylinder 25. A rotating component 22 is provided between the door 23 and the feed cylinder 21, connecting the door 23 to both the feed cylinder 21 and the door 23, allowing the door 23 to rotate relative to the feed cylinder 21, thereby opening and closing the feed cylinder 21. Opening the door 23 allows the flame retardant to be added into the feed cylinder 21. The rotating component is a hinge, and its specific structure is a well-known technical means, which will not be described in detail here. A connection port 24 is provided on the door 23. After the flame retardant is added, the door 23 is closed, and the hot air pipe is connected to the connection port 24, allowing hot air to be slowly introduced into the feed cylinder 21 through the connection port 24. The hot air passes through the drying chamber 26 and, after making full contact with the flame retardant, dries it. Multiple auxiliary mounting brackets 27 are arranged around both ends of the drying cylinder 25, and the auxiliary mounting brackets 27 are fixedly connected to the outer wall of the drying cylinder 25. The discharge hole 28 is located at one end of the drying cylinder 25 near the discharge assembly 5. The discharge hole 28 is equidistantly spaced around the side wall of the drying cylinder 25. The flame retardant that has been dried in the drying chamber 26 can be discharged through the discharge hole 28 and enter the discharge assembly 5 for discharge. Please refer to... Figure 1-4 The rotating assembly 3 includes a drive motor 31 mounted on the base assembly 1, a driven gear ring 33 mounted on the drying cylinder 25, and auxiliary rings 34 mounted at both ends of the drying cylinder 25. The drive motor 31 is mounted on the mounting frame 12, and the output end of the drive motor 31 is connected to a drive gear 32, which meshes with the driven gear ring 33. The inner wall of the driven gear ring 33 is fixedly connected to the auxiliary mounting frame 27 surrounding the outer side of the drying cylinder 25, and the auxiliary rings 34 are fixedly connected to the auxiliary mounting frame 27 surrounding the outer side of the drying cylinder 25. Specifically, two auxiliary rings 34 are arranged on both sides of the driven gear ring 33. Two auxiliary frames 36 are symmetrically installed on the top of the mounting frame 12 at positions corresponding to the auxiliary rings 34. Each auxiliary frame 36 has an auxiliary wheel 35 rotatably mounted on it, and the auxiliary wheels 35 abut against the auxiliary rings 34 from both sides. The drive motor 31 can drive the drive gear 32 to rotate. Through the meshing of the drive gear 32 and the driven gear ring 33, the driven gear ring 33 and the drying cylinder 25 are driven to rotate synchronously. During the rotation of the drying cylinder 25, the auxiliary ring 34 is driven to rotate relative to the auxiliary wheel 35, thereby ensuring that the entire drying cylinder 25 rotates evenly.

[0035] Please refer to Figure 4-7The material guiding assembly 4 includes an inlet guide section 41, a drying guide section 42, and a discharge guide section 43, which are arranged axially along the inner wall of the drying cylinder 25. After the flame retardant enters the drying chamber 26, the flame retardant is synchronously driven to move forward in a spiral motion during the rotation of the drying cylinder 25. It is guided sequentially by the inlet guide section 41, the drying guide section 42, and the discharge guide section 43, which fully disperses the flame retardant, allowing it to fully contact the hot air and complete the drying process. The inlet guide section 41 includes an inclined guide plate 411 and an inlet guide groove 412 arranged around the inner wall of the drying cylinder 25. The inclined guide plate 411 is located on the inner wall of the drying cylinder 25 near the inlet cylinder 21 and is spirally arranged around the inner wall of the drying cylinder 25. The inlet guide groove 412 is located on the inner wall of the drying cylinder 25 near the drying guide section 42 and is equidistantly arranged around the inner wall of the drying cylinder 25. The end of the feed guide trough 412 is fixedly connected to the end of the inclined guide plate 411. After the flame retardant enters the drying chamber 26, the drying cylinder 25 rotates and drives the flame retardant to spiral forward along the inclined guide plate 411, and then enters the feed guide trough 412 to continue forward, completing the initial dispersion.

[0036] Please refer to Figure 4-7The drying guide section 42 includes a main guide member 421 symmetrically arranged about the centerline of the drying cylinder 25 and an auxiliary guide member 422 mounted on the main guide member 421. The auxiliary guide member 422 is inclined relative to the main guide member 421. Multiple main guide members 421 are continuously arranged along the axial direction of the drying cylinder 25, with an inclination angle of 45° between different main guide members 421 along the axial direction of the drying cylinder 25. In some other embodiments, the inclination angle between different main guide members 421 along the axial direction of the drying cylinder 25 may be other angles. Two main guide members 421 are symmetrically arranged at the same position along the axial direction of the drying cylinder 25, with an angle of 90° between the two main guide members 421. In some other embodiments, the angle between two main guide members 421 symmetrically arranged at the same position along the axial direction of the drying cylinder 25 may be other angles. The main guide member 421 includes a first material plate 4211 and a second material plate 4212 connected to each other, and the first material plate 4211 and the second material plate 4212 are arranged perpendicular to each other. The first material plate 4211 and the second material plate 4212 are fixedly connected to the inner wall of the drying cylinder 25 at both ends. The auxiliary guide component 422 includes an inclined plate 4221 and horizontal plates 4222 disposed at both ends of the inclined plate 4221. The angle between the inclined plate 4221 and the main material component 421 is 45°. The horizontal plate 4222 on the side of the inclined plate 4221 closest to the main material component 421 is connected to the main material component 421. A channel for the flame retardant to disperse is formed between the first material plate 4211 and the second material plate 4212. The inclined plate 4221 further divides the channel, allowing the flame retardant to be further dispersed when it passes through, reducing the probability of flame retardant accumulation, and making the contact between the flame retardant and the hot air more uniform. The discharge guide part 43 is disposed on the inner wall of the drying cylinder 25 near the discharge component 5, and the discharge guide part 43 is equidistantly arranged around the inner wall of the drying cylinder 25. The feeding guide section 43 includes a feeding trough 431 and side plates 432 disposed on both sides of the feeding trough 431. The side plates 432 are connected to the inner wall of the drying cylinder 25. After the flame retardant is discharged from the main material component 421, it continues to move along the feeding guide section 43. After being dispersed and guided by the feeding guide section 43, the dispersion degree of the flame retardant is further improved.

[0037] Please refer to Figure 1 and Figure 3-6 The discharge assembly 5 includes a discharge chamber 51 located at the end of the drying cylinder 25 and a discharge cavity 53 located at the bottom of the discharge chamber 51. The discharge chamber 51 is hollow and communicates with the discharge cavity 53. A discharge pipe 54 is connected to the bottom of the discharge cavity 53. The flame retardant dried in the drying chamber 26 can be discharged into the discharge chamber 51 through the discharge hole 28, and then continues downward through the discharge cavity 53 into the discharge pipe 54 under the action of gravity, finally completing the discharge. An air outlet 52 is opened at the top of the discharge chamber 51. After the hot air fully contacts the flame retardant to complete the drying, it is discharged into the discharge chamber 51 through the discharge hole 28, and then discharged upward through the air outlet 52.

[0038] After the flame retardant enters the drying cylinder 25, it spirals forward following the rotation of the cylinder. First, guided by the inclined guide plate 411, it spirals into the feed chute 412 for initial dispersion. Then, it continues into the drying guide section 42, where the flame retardant is further dispersed by the channels at different angles created by the continuously arranged main feed member 421 and auxiliary feed member 422, ensuring sufficient contact with hot air for drying. Finally, it enters the discharge guide section 43, where it is guided to complete the final drying process. This step-by-step dispersion through the feed guide section 41, drying guide section 42, and discharge guide section 43 reduces flame retardant accumulation and improves drying uniformity during the drying process.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A drying device for plastic powder flame retardant, characterized in that: The system includes a base assembly (1), a cylinder assembly (2) mounted on the base assembly (1), a rotating assembly (3), and a discharge assembly (5), as well as a material guiding assembly (4) disposed inside the cylinder assembly (2). The cylinder assembly (2) includes a feed cylinder (21), a drying cylinder (25), and a discharge hole (28) disposed at one end of the drying cylinder (25). The material guiding assembly (4) includes a material inlet guide section (41) disposed axially along the inner wall of the drying cylinder (25). The drying guide section (42) and the feeding guide section (43) are provided. The feeding guide section (41) includes an inclined guide plate (411) and a feeding guide groove (412) arranged around the inner wall of the drying cylinder (25). The drying guide section (42) includes a main material component (421) symmetrically arranged about the center line of the drying cylinder (25) and an auxiliary material component (422) installed on the main material component (421). The auxiliary material component (422) is inclined relative to the main material component (421).

2. The drying device for plastic powder flame retardant according to claim 1, characterized in that: The drying cylinder (25) is continuously provided with a plurality of main material components (421) along the axial direction. The main material components (421) include a first material plate (4211) and a second material plate (4212) connected to each other. The first material plate (4211) and the second material plate (4212) are arranged perpendicular to each other.

3. The drying device for plastic powder flame retardant according to claim 2, characterized in that: The auxiliary guide (422) includes an inclined plate (4221) and horizontal plates (4222) disposed at both ends of the inclined plate (4221). The angle between the inclined plate (4221) and the main guide (421) is 45°. The horizontal plate (4222) on the side of the inclined plate (4221) closer to the main guide (421) is connected to the main guide (421).

4. The plastic powder flame retardant drying device according to claim 3, characterized in that: The inclined guide plate (411) is disposed on the inner wall of the drying cylinder (25) near the feed cylinder (21). The inclined guide plate (411) is spirally arranged around the inner wall of the drying cylinder (25). The feed guide groove (412) is disposed on the inner wall of the drying cylinder (25) near the drying guide section (42). The feed guide groove (412) is equidistantly arranged around the inner wall of the drying cylinder (25).

5. A plastic powder flame retardant drying device according to claim 4, characterized in that: The feeding guide (43) is located on the inner wall of the drying cylinder (25) near the discharge assembly (5), and the feeding guide (43) is equidistantly arranged around the inner wall of the drying cylinder (25).

6. The drying device for plastic powder flame retardant according to claim 1, characterized in that: The rotating assembly (3) includes a drive motor (31) mounted on the base assembly (1), a driven gear ring (33) mounted on the drying cylinder (25), and auxiliary rings (34) mounted at both ends of the drying cylinder (25). The output end of the drive motor (31) is connected to a drive gear (32), which meshes with the driven gear ring (33).

7. The drying device for plastic powder flame retardant according to claim 1, characterized in that: The discharge assembly (5) includes a discharge chamber (51) located at the end of the drying cylinder (25) and a discharge cavity (53) located at the bottom of the discharge chamber (51). An air outlet (52) is provided at the top of the discharge chamber (51), and a discharge pipe (54) is connected to the bottom of the discharge cavity (53).

8. A drying device for plastic powder flame retardant according to claim 1, characterized in that: A hatch (23) is rotatably mounted on the feed cylinder (21), and a connection port (24) is provided on the hatch (23). The drying cylinder (25) is rotatably mounted on the feed cylinder (21).

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