Drying device for flame-retardant PP plate processing

Abstract

The utility model relates to the technical field of flame-retardant PP plate processing, in particular to a drying device for flame-retardant PP plate processing, which comprises a rack, a driving mechanism, a plurality of conveying rollers, a drying box, a first drying component and a second drying component, the conveying rollers are distributed at equal intervals along the conveying direction of flame-retardant PP plates, the driving mechanism is mounted on the rack, the conveying rollers are mounted on the rack, and the drying box is mounted on the rack. The driving mechanism is used for driving the conveying rollers to rotate so that the flame-retardant PP plate can move in the conveying direction, the drying box penetrates through the rack, and the first drying assembly, the conveying rollers and the second drying assembly are sequentially arranged in the drying box from top to bottom. The first drying assembly and the second drying assembly are matched with each other, the flame-retardant PP board can be dried from the upper side and the lower side of the flame-retardant PP board at the same time, and then the drying efficiency of the flame-retardant PP board can be improved.

Description

Technical Field

[0001] This utility model relates to the field of flame-retardant PP sheet processing technology, and in particular to a drying device for processing flame-retardant PP sheets. Background Technology

[0002] Flame-retardant PP sheets refer to PP (polypropylene) plastic sheets with flame-retardant properties. Due to their excellent flame-retardant performance, stability, lightweight, and good processing performance, they are widely used in electronics, automotive, and construction industries. To remove moisture from the PP raw materials and improve the flame-retardant performance and processing stability of the sheets, flame-retardant PP sheets need to be dried after molding. Therefore, we urgently need a drying device for processing flame-retardant PP sheets.

[0003] Currently, flame-retardant PP sheets are dried by conveying them to a drying chamber via a conveyor track, where they are dried. However, since the lower surface of the flame-retardant PP sheet is always in contact with the conveyor track, drying can only be done from the top, which affects the drying efficiency of the flame-retardant PP sheet. Utility Model Content

[0004] In view of the shortcomings of the existing production technology, the applicant provides a drying device for processing flame-retardant PP sheets. By improving the structure of the drying device, the flame-retardant PP sheets can be dried simultaneously from both the top and bottom sides, thereby improving the drying efficiency of the flame-retardant PP sheets.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A drying device for processing flame-retardant PP sheets includes: a frame, a drive mechanism, a plurality of conveying rollers evenly spaced along the conveying direction of the flame-retardant PP sheets, a drying chamber, a first drying component, and a second drying component. The drive mechanism is mounted on the frame, and the conveying rollers are mounted on the frame. The drive mechanism drives the conveying rollers to rotate, so that the flame-retardant PP sheets move along the conveying direction. The drying chamber extends through the frame. The first drying component, the conveying rollers, and the second drying component are arranged sequentially from top to bottom inside the drying chamber. A lifting part is provided at the bottom of the second drying component. The lifting part drives the second drying component to move up and down, so as to achieve contact or separation between the second drying component and the flame-retardant PP sheets. The first drying component is used to achieve drying treatment of the upper part of the flame-retardant PP sheets, and the second drying component is used to achieve drying treatment of the lower part of the flame-retardant PP sheets.

[0007] Therefore, through the cooperation of the first and second drying components, the flame-retardant PP sheet can be dried simultaneously from both the top and bottom sides. Compared with the existing method of drying only from the top of the flame-retardant PP sheet in one direction, this method has a simpler structure and is easier to operate. The simultaneous drying from both the top and bottom sides can improve the drying efficiency of the flame-retardant PP sheet. In addition, when drying the bottom of the flame-retardant PP sheet, the flame-retardant PP sheet can be separated from the conveyor roller to ensure that the second drying component can act on the lower surface of the flame-retardant PP sheet, thus further improving the drying efficiency of the flame-retardant PP sheet.

[0008] As a further improvement to the above technical solution: when the second drying component comes into contact with the flame-retardant PP sheet, the second drying component can perform drying treatment on the underside of the flame-retardant PP sheet.

[0009] As a further improvement to the above technical solution: when the second drying component separates from the flame-retardant PP sheet, the flame-retardant PP sheet is conveyed by the conveying roller.

[0010] As a further improvement to the above technical solution: the second drying assembly includes: multiple first drying sections and multiple support blocks. The lifting section is connected to the drying chamber. The lower surface of the first drying section is connected to the telescopic end of the lifting section through a support frame. The first drying section and the conveying rollers in the drying chamber are staggered. The support blocks are distributed at both ends of the upper surface of the first drying section. Multiple first drying holes are equally spaced on the upper surface of the first drying section. Heat source gas is sprayed out through the first drying holes and acts on the lower surface of the flame-retardant PP sheet to dry the flame-retardant PP sheet from below. Therefore, the first driving component can control the up-and-down movement of the first drying section to realize the up-and-down movement of the second drying component in the conveying and drying states; the support block can ensure that the first drying section does not come into contact with the lower surface of the flame-retardant PP sheet, and there is always a gap between the first drying section and the flame-retardant PP component. In this way, the heat source gas can be ensured to flow between the lower surface of the flame-retardant PP sheet and the first drying section, so as to further improve the drying efficiency of the flame-retardant PP sheet; the design of multiple first drying holes ensures that all parts of the lower surface of the flame-retardant PP sheet can be affected by the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet.

[0011] As a further improvement to the above technical solution: the first drying component includes: a first driving member and a second drying section. The first driving member is connected to the drying chamber, and the second drying section is connected to the telescopic end of the first driving member. The second drying section is used to dry the flame-retardant PP sheet from above. The lower surface of the second drying section is provided with a plurality of second drying holes at equal intervals. Heat source gas is sprayed out through the second drying holes and acts on the upper surface of the flame-retardant PP sheet to dry the flame-retardant PP sheet from above. Therefore, the second driving component can drive the second drying section to move up and down, and the position of the second drying section can be dynamically adjusted according to the thickness of the flame-retardant sheet to be dried. In this way, on the one hand, it is ensured that the position of the first drying component will not interfere with the processing of the flame-retardant PP sheet, and on the other hand, during the drying process, the second drying section will not be too far from the upper surface of the flame-retardant PP sheet (i.e., it is kept at the preset value H), so that the heat source gas can directly act on the upper surface of the flame-retardant PP sheet to reduce heat dissipation, thereby further improving the drying efficiency of the flame-retardant PP sheet. The design of multiple second drying holes ensures that all parts of the upper surface of the flame-retardant PP sheet can be affected by the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet.

[0012] As a further improvement to the above technical solution, it also includes: an air inlet pipe, which runs through the drying chamber, and the first drying component and the second drying component are both connected to the outlet end of the air inlet pipe.

[0013] As a further improvement to the above technical solution, it also includes: a pump and a heater arranged sequentially along the air intake direction of the air inlet pipe. The pump and the heater are both located outside the drying chamber and connected to the drying chamber. The pump and the heater are both installed on the air inlet pipe. The pump is used to draw outside air into the drying chamber, and the heater is used to heat the air drawn in by the pump.

[0014] As a further improvement to the above technical solution, it also includes: a first branch pipe and a second branch pipe, the inlet ends of the first branch pipe and the second branch pipe are both connected to the outlet end of the air inlet pipe, the outlet end of the first branch pipe is connected to the first drying component, and the outlet end of the second branch pipe is connected to the second drying component; when drying the flame-retardant PP sheet, one heat source gas after heating is transported to the first drying component through the first branch pipe, and the flame-retardant PP sheet is dried from above by the first drying component, and the other heat source gas after heating is transported to the second drying component through the second branch pipe, and the flame-retardant PP sheet is dried from below by the second drying component.

[0015] As a further improvement to the above technical solution: the driving mechanism includes: a second driving member and a belt gear assembly, the second driving member is connected to the frame, the driving end of the second driving member is connected to the input end of the belt gear assembly, and the output end of the belt gear assembly is connected to the conveying roller.

[0016] As a further improvement to the above technical solution: the belt gear assembly is provided in two sets, and the two sets of belt gear assemblies are respectively located at both ends of the frame. The two ends of the conveyor roller are respectively connected to the output ends of the two sets of belt gear assemblies. Each set of belt gear assemblies includes: a belt and multiple gears, and each gear meshes with the belt. The driving end of the second driving member is connected to one of the gears, and the gears correspond one-to-one with the conveyor rollers.

[0017] The beneficial effects of this utility model are as follows:

[0018] By cooperating with the first and second drying components, the flame-retardant PP sheet can be dried simultaneously from both the top and bottom sides. Compared to the existing method of drying only from the top of the flame-retardant PP sheet in one direction, this method is simple in structure and easy to operate. The simultaneous drying from both the top and bottom sides can improve the drying efficiency of the flame-retardant PP sheet. In addition, when drying the bottom of the flame-retardant PP sheet, the flame-retardant PP sheet can be separated from the conveyor roller to ensure that the second drying component can act on the lower surface of the flame-retardant PP sheet, thus further improving the drying efficiency of the flame-retardant PP sheet.

[0019] This utility model also has the following advantages:

[0020] 1. This utility model can control the up and down movement of the first drying part through the first driving component, so as to realize the up and down movement of the second drying component in the conveying state and the drying state; the support block can ensure that the first drying part will not come into contact with the lower surface of the flame-retardant PP sheet, and there is always a gap between the first drying part and the flame-retardant PP component. In this way, the heat source gas can be ensured to flow between the lower surface of the flame-retardant PP sheet and the first drying part, so as to further improve the drying efficiency of the flame-retardant PP sheet.

[0021] 2. This utility model uses a second driving component to drive the second drying section to move up and down, thereby enabling the second drying section to move up and down. The position of the second drying section can be dynamically adjusted according to the thickness of the flame-retardant PP sheet to be dried. In this way, on the one hand, it ensures that the position of the first drying component does not interfere with the processing of the flame-retardant PP sheet, and on the other hand, during the drying process, the second drying section will not be too far from the upper surface of the flame-retardant PP sheet (i.e., it is kept at a preset value H), so that the heat source gas can directly act on the upper surface of the flame-retardant PP sheet to reduce heat dissipation, thereby further improving the drying efficiency of the flame-retardant PP sheet.

[0022] 3. The design of multiple first drying holes in this utility model ensures that all parts of the lower surface of the flame-retardant PP sheet are exposed to the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet; the design of multiple second drying holes ensures that all parts of the upper surface of the flame-retardant PP sheet are exposed to the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the drying device for processing flame-retardant PP sheets according to the present invention.

[0024] Figure 2 This is a cross-sectional view of the drying device for processing flame-retardant PP sheets according to this utility model.

[0025] Figure 3 A schematic diagram of the installation of the first drying component, the second drying component, and the air inlet pipe of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the first drying component of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second drying component of this utility model;

[0028] Figure 6 This is a schematic diagram of the installation of the drive mechanism and the conveyor roller of this utility model;

[0029] Figure 7 For the present utility model Figure 6 Enlarged schematic diagram of a local structure at point A;

[0030] Figure 8 This is a schematic diagram of the structure of the flame-retardant PP sheet of this utility model in the conveying state;

[0031] Figure 9 This is a front view of the flame-retardant PP sheet of this utility model in the conveying state;

[0032] Figure 10This is a schematic diagram of the structure of the flame-retardant PP sheet of this utility model in a dry state;

[0033] Figure 11 This is a front view of the flame-retardant PP sheet of this utility model in its dry state.

[0034] Among them: 1. Rack;

[0035] 2. Drive mechanism;

[0036] 201. Second drive component; 202. Belt and gear assembly; 2021. Belt; 2022. Gear;

[0037] 3. Conveyor rollers;

[0038] 4. Drying oven;

[0039] 5. First drying component;

[0040] 501, First driving component; 502, Second drying section; 5021, Second drying hole;

[0041] 6. Second drying component;

[0042] 601, First drying section; 6011, First drying hole; 602, Support block; 603, Support frame;

[0043] 7. Air inlet duct;

[0044] 8. Pump;

[0045] 9. Heater;

[0046] 10. First branch pipe;

[0047] 11. Second branch pipe;

[0048] 12. Lifting unit. Detailed Implementation

[0049] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0050] like Figures 1 to 11The diagram shows the preferred embodiment of this utility model. The drying device for processing flame-retardant PP sheets in this embodiment includes: a frame 1, a drive mechanism 2, multiple conveying rollers 3 evenly spaced along the conveying direction of the flame-retardant PP sheets, a drying chamber 4, a first drying component 5, and a second drying component 6. The drive mechanism 2 is mounted on the frame 1, and the conveying rollers 3 are also mounted on the frame 1. The drive mechanism 2 drives the conveying rollers 3 to rotate, causing the flame-retardant PP sheets to move along the conveying direction. The drying chamber 4 passes through the frame 1. The first drying component 5, the conveying rollers 3, and the second drying component 6 are arranged sequentially from top to bottom inside the drying chamber 4. A lifting part 12 is provided at the bottom of the second drying component 6. The lifting part 12 drives the second drying component 6 to move up and down, thereby achieving contact or separation between the second drying component 6 and the flame-retardant PP sheet. The first drying component 5 achieves drying above the flame-retardant PP sheet, and the second drying component 6 achieves drying below the flame-retardant PP sheet. Therefore, through the cooperation of the first drying component 5 and the second drying component 6, the flame-retardant PP sheet can be dried simultaneously from both the top and bottom sides. Compared with the existing method of drying only from the top of the flame-retardant PP sheet in one direction, this method has a simple structure and is easy to operate. The simultaneous drying from both the top and bottom sides can improve the drying efficiency of the flame-retardant PP sheet. In addition, when drying the bottom of the flame-retardant PP sheet, the flame-retardant PP sheet can be separated from the conveying roller 3 to ensure that the second drying component 6 can act on the lower surface of the flame-retardant PP sheet, thus further improving the drying efficiency of the flame-retardant PP sheet.

[0051] For example, the lifting unit 12 uses a cylinder.

[0052] In this embodiment, when the second drying component 6 comes into contact with the flame-retardant PP sheet, the second drying component 6 can dry the area below the flame-retardant PP sheet; when the second drying component 6 separates from the flame-retardant PP sheet, the flame-retardant PP sheet is conveyed by the conveying roller 3.

[0053] In this embodiment, the second drying assembly 6 includes: a plurality of first drying sections 601 and a plurality of support blocks 602. The lifting section 12 is connected to the drying chamber 4. The lower surface of the first drying section 601 is connected to the telescopic end of the lifting section 12 through the support frame 603. The first drying section 601 and the conveying roller 3 in the drying chamber 4 are staggered. The support blocks 602 are distributed at both ends of the upper surface of the first drying section 601. A plurality of first drying holes 6011 are equally spaced on the upper surface of the first drying section 601. Heat source gas is sprayed out through the first drying holes 6011 and acts on the lower surface of the flame-retardant PP sheet to dry the flame-retardant PP sheet from below. Therefore, the first driving component 501 can control the up-and-down movement of the first drying section 601 to realize the up-and-down movement of the second drying component 6 in the conveying state and the drying state; the support block 602 can ensure that the first drying section 601 does not come into contact with the lower surface of the flame-retardant PP sheet, and there is always a gap between the first drying section 601 and the flame-retardant PP component. In this way, the heat source gas can be ensured to flow between the lower surface of the flame-retardant PP sheet and the first drying section 601, so as to further improve the drying efficiency of the flame-retardant PP sheet; the design of multiple first drying holes 6011 is such that all parts of the lower surface of the flame-retardant PP sheet can be affected by the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet.

[0054] In this embodiment, the first drying component 5 includes: a first driving member 501 and a second drying part 502. The first driving member 501 is connected to the drying chamber 4, and the second drying part 502 is connected to the telescopic end of the first driving member 501. The second drying part 502 is used to dry the flame-retardant PP sheet from above. A plurality of second drying holes 5021 are equally spaced on the lower surface of the second drying part 502. Heat source gas is sprayed out through the second drying holes 5021 and acts on the upper surface of the flame-retardant PP sheet to dry the flame-retardant PP sheet from above. Therefore, the second driving component 201 can drive the second drying section 502 to move up and down, thereby dynamically adjusting the position of the second drying section 502 according to the thickness of the flame-retardant sheet to be dried. In this way, on the one hand, it is ensured that the position of the first drying component 5 does not interfere with the processing of the flame-retardant PP sheet, and on the other hand, during the drying process, the second drying section 502 is not too far from the upper surface of the flame-retardant PP sheet (i.e., it is kept at a preset value H), so that the heat source gas can directly act on the upper surface of the flame-retardant PP sheet to reduce heat dissipation, thereby further improving the drying efficiency of the flame-retardant PP sheet. The design of multiple second drying holes 5021 ensures that all parts of the upper surface of the flame-retardant PP sheet can be affected by the heat source gas, thereby improving the drying efficiency of the flame-retardant PP sheet.

[0055] For example, the first driving component 501 is a cylinder.

[0056] In this embodiment, the system further includes: an air inlet pipe 7, a pump 8 and a heater 9 arranged sequentially along the air intake direction of the air inlet pipe 7, a first branch pipe 10, and a second branch pipe 11. The air inlet pipe 7 passes through the drying chamber 4. The first drying assembly 5 and the second drying assembly 6 are both connected to the outlet end of the air inlet pipe 7. The pump 8 and the heater 9 are both located outside the drying chamber 4 and connected to the drying chamber 4. The pump 8 and the heater 9 are both installed on the air inlet pipe 7. The pump 8 is used to draw outside air into the drying chamber 4, and the heater 9 is used to heat the air drawn in by the pump 8. The inlet ends of the first branch pipe 10 and the second branch pipe 11 are both connected to the air inlet pipe 7. The outlet ends of the first branch pipe 10 and the second branch pipe 11 are connected to the first drying component 5, and the outlet end of the second branch pipe 11 is connected to the second drying component 6. When drying the flame-retardant PP sheet, one heat source gas after heating is transported to the first drying component 5 through the first branch pipe 10, and the flame-retardant PP sheet is dried from above by the first drying component 5. The other heat source gas after heating is transported to the second drying component 6 through the second branch pipe 11, and the flame-retardant PP sheet is dried from below by the second drying component 6.

[0057] In this embodiment, the drive mechanism 2 includes a second drive member 201 and a belt gear assembly 202. The second drive member 201 is connected to the frame 1, and the drive end of the second drive member 201 is connected to the input end of the belt gear assembly 202. The output end of the belt gear assembly 202 is connected to the conveyor roller 3. There are two sets of belt gear assemblies 202, which are located at both ends of the frame 1. The two ends of the conveyor roller 3 are connected to the output ends of the two sets of belt gear assemblies 202. Each set of belt gear assemblies 202 includes a belt 2021 and multiple gears 2022, and each gear 2022 meshes with the belt 2021. The drive end of the second drive member 201 is connected to one of the gears 2022, and the gears 2022 correspond one-to-one with the conveyor roller 3. Specifically, the second drive unit 201 is activated, which drives the gear 2022 connected to the second drive unit 201 to rotate, thereby rotating the conveyor roller 3 connected to the gear 2022. The rotation of the gear 2022 connected to the second drive unit 201 drives the belt 2021 to rotate, thereby rotating all the remaining gears 2022, and then rotating all the remaining conveyor rollers 3, ultimately causing the flame-retardant PP sheet to be conveyed along the conveying direction.

[0058] For example, the second drive unit 201 uses a motor.

[0059] The drying process of this invention's flame-retardant PP sheet is as follows: First, the flame-retardant PP sheet to be dried is placed on the conveyor roller 3, and the second drive unit 201 is activated to drive the synchronous rotation of multiple conveyor rollers 3, conveying the flame-retardant PP sheet from the loading position to the drying chamber 4 (e.g., ...). Figures 8 to 9 As shown, at this time, the flame-retardant PP sheet is in the conveying state; then, the second drive unit 201 is turned off, and the lifting unit 12 and the first drive unit 501 are started. The lifting unit 12 drives the first drying unit 601 to move upward, so that the lower surface of the flame-retardant PP sheet is separated from the conveying roller 3 (as shown). Figures 10 to 11 As shown, at this time, the flame-retardant PP sheet is in a dry state. The first driving component 501 drives the second drying part 502 to move downward so that the second drying part 502 is not too far from the upper surface of the flame-retardant PP sheet (i.e., it is kept at the preset value H). Then, the pump 8 and heater 9 are started to draw outside air into the drying chamber 4 and heat it through the heater 9 to form a heat source gas. The gas is sprayed out through the first drying hole 6011 and acts on the lower part of the flame-retardant PP sheet, and sprayed out through the second drying hole 5021 and acts on the upper part of the flame-retardant PP sheet. At the same time, the flame-retardant PP sheet is dried from both the upper and lower sides. Finally, after drying is completed, the pump 8 and heater 9 are turned off, and the lifting part 12 and the first driving component 501 are started to restore the first drying part 601 and the second drying part 502 to their initial positions. Then, the second driving component 201 is started to drive the synchronous rotation of multiple conveying rollers 3 to transport the flame-retardant PP sheet from the drying chamber 4 to the unloading position.

[0060] In summary, this invention, through the cooperation of the first drying component 5 and the second drying component 6, can simultaneously dry the flame-retardant PP sheet from both the top and bottom sides. Compared to existing methods that only dry from the top of the flame-retardant PP sheet in one direction, this method has a simpler structure, is easier to operate, and improves the drying efficiency of the flame-retardant PP sheet by drying from both the top and bottom sides simultaneously. Furthermore, when drying the bottom of the flame-retardant PP sheet, the flame-retardant PP sheet can be separated from the conveying roller 3 to ensure that the second drying component 6 can act on the lower surface of the flame-retardant PP sheet, thus further improving the drying efficiency of the flame-retardant PP sheet.

[0061] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A drying device for processing flame-retardant PP plates, characterized in that, The utility model relates to a kind of flame-retardant PP plate drying machine, including: Rack (1), and Driving mechanism (2) and multiple conveying rollers (3) distributed equidistantly along the conveying direction of flame-retardant PP plate, the driving mechanism (2) is installed on the rack (1), the conveying roller (3) is installed on the rack (1), the driving mechanism (2) is used to drive the conveying roller (3) rotation, so that flame-retardant PP plate moves along conveying direction; Drying box (4), first drying assembly (5) and second drying assembly (6), the drying box (4) penetrates the rack (1), the first drying assembly (5), the conveying roller (3) and the second drying assembly (6) are sequentially arranged from top to bottom in the inside of the drying box (4); The bottom of the second drying assembly (6) is provided with lifting part (12), the lifting part (12) is used to drive the second drying assembly (6) lifting movement, to realize the contact or separation between the second drying assembly (6) and flame-retardant PP plate, and the drying treatment above flame-retardant PP plate is realized by the first drying assembly (5), and the drying treatment below flame-retardant PP plate is realized by the second drying assembly (6).

2. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: When the second drying assembly (6) and flame-retardant PP plate are in contact, the second drying assembly (6) can dry the below flame-retardant PP plate.

3. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: When the second drying assembly (6) and flame-retardant PP plate are separated, flame-retardant PP plate is conveyed by the conveying roller (3).

4. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: The second drying assembly (6) includes: Multiple first drying parts (601) and multiple support blocks (602), the lifting part (12) is connected with the drying box (4), the lower surface of the first drying part (601) is connected with the telescopic end of the lifting part (12) by support frame (603), the first drying part (601) is staggered with the conveying roller (3) in the drying box (4), and the support block (602) is distributed on the both ends of the upper surface of the first drying part (601); The upper surface of the first drying part (601) is provided with multiple first drying holes (6011) equidistantly, and the heat source gas is sprayed out through the first drying hole (6011) and acts on the lower surface of flame-retardant PP plate to dry the flame-retardant PP plate from below.

5. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: The first drying assembly (5) includes: First driving part (501) and second drying part (502), the first driving part (501) is connected with the drying box (4), the second drying part (502) is connected with the telescopic end of the first driving part (501), and the second drying part (502) is used to dry the flame-retardant PP plate from above; The lower surface of the second drying part (502) is provided with multiple second drying holes (5021) equidistantly, and the heat source gas is sprayed out through the second drying hole (5021) and acts on the upper surface of flame-retardant PP plate to dry the flame-retardant PP plate from above.

6. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: Further include: An air inlet pipe (7) penetrates the drying box (4), and the first drying assembly (5) and the second drying assembly (6) are both connected with the outlet end of the air inlet pipe (7).

7. The drying device for processing flame-retardant PP sheet material according to claim 6, characterized in that: Further comprising: A pump (8) and a heater (9) are arranged in sequence along the air inlet direction of the air inlet pipe (7), and the pump (8) and the heater (9) are both located outside the drying box (4) and connected with the drying box (4), and the pump (8) and the heater (9) are both mounted on the air inlet pipe (7), the pump (8) is used for pumping external air into the drying box (4), and the heater (9) is used for heating treatment of the air pumped by the pump (8).

8. The drying device for processing flame-retardant PP sheet material according to claim 6, characterized in that: Further comprising: A first branch pipe (10) and a second branch pipe (11), the inlet end of the first branch pipe (10) and the second branch pipe (11) are both connected with the outlet end of the air inlet pipe (7), the outlet end of the first branch pipe (10) is connected with the first drying assembly (5), and the outlet end of the second branch pipe (11) is connected with the second drying assembly (6); When the flame-retardant PP plate is dried, one of the heat source gases after heating is delivered to the first drying assembly (5) through the first branch pipe (10) and dries the flame-retardant PP plate from above, and the other heat source gas after heating is delivered to the second drying assembly (6) through the second branch pipe (11) and dries the flame-retardant PP plate from below.

9. The drying device for processing flame-retardant PP sheet material according to claim 1, characterized in that: The driving mechanism (2) comprises: A second driving member (201) and a belt gear assembly (202), the second driving member (201) is connected with the rack (1), the driving end of the second driving member (201) is connected with the input end of the belt gear assembly (202), and the output end of the belt gear assembly (202) is connected with the conveying roller (3).

10. The drying device for processing flame-retardant PP sheet material according to claim 9, characterized in that: The belt gear assembly (202) is provided with two groups, and the two groups of belt gear assemblies (202) are located at both ends of the rack (1), and the two ends of the conveying roller (3) are connected with the output ends of the two groups of belt gear assemblies (202); Each group of belt gear assemblies (202) comprises: A belt (2021) and a plurality of gears (2022), each gear (2022) is engaged with the belt (2021); The driving end of the second driving member (201) is connected with one of the gears (2022), and the gears (2022) correspond one-to-one with the conveying roller (3).

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