Dehumidifying and drying device for modified plastic particles

Abstract

The utility model discloses a dehumidifying and drying device for modified plastic particles, relates to the technical field of modified plastic particle processing, and aims to solve the problem that part of plastic particles cannot be fully dried easily due to the fact that the time of the plastic particles passing through a drying section is short. The cold air drying area is arranged below the first dispersing area and used for blowing cold air to the modified plastic particles, and inclined plates used for preventing the modified plastic particles from linearly falling are arranged in the cold air drying area and the hot air drying area. According to the utility model, a plurality of groups of inclined plates which are distributed in a staggered manner are arranged in the cold air drying area and the hot air drying area, so that modified plastic particles falling into the cold air drying area and the hot air drying area can be discharged downwards through cracks only after rolling on the multiple layers of inclined plates; and the retention time of the modified plastic particles in the cold air drying area and the hot air drying area is prolonged, so that the modified plastic particles are fully dried.

Description

Technical Field

[0001] The utility model relates to the field of modified plastic particle processing, in particular to a dehumidification and drying device for modified plastic particles. Background Art

[0002] Modified plastic particles refer to a new type of material obtained by adding various additives and fillers, or by using physical and chemical methods to modify plastic raw materials. Compared with ordinary plastics, modified plastics have added various additives and additives, such as antioxidants, stabilizers, etc. These additives will absorb air and moisture during the processing. If they are not dried, these additives will react chemically with plastic molecules, affecting the performance of the plastic, and even causing defects such as bubbles and shrinkage in the products. Therefore, in order to ensure product quality, modified plastics need to be dried.

[0003] The dehumidification and drying device for modified plastic particles is a device that can dry modified plastic particles.

[0004] A Chinese utility model (Announcement No.: CN217834324U) discloses a rapid drying device for the production of modified plastic particles, including a drying tower body, wherein the drying tower body is provided with a first buffer section, a first drying section, a second buffer section, and a second drying section from top to bottom, wherein the first drying section is provided with a cold air drying system, and the second drying section is provided with a hot air drying system. Compared with the prior art, the rapid drying device for the production of modified plastic particles provided by the utility model performs cold air dehumidification on the plastic particles through the first drying section, blows off the excess water on the surface of the plastic particles, reduces the drying load of the second drying section, and then performs hot air drying on the plastic particles through the second drying section, dries the plastic more completely, utilizes gravity to realize continuous conveying of the plastic particles, can realize continuous rapid drying of the plastic particles, and has a good drying effect.

[0005] In the process of realizing the utility model, the inventors found that there are at least the following problems in the technology: the modified plastic particles pass through the first buffer section, the first drying section, the second buffer section and the second drying section in sequence under the action of gravity for dehumidification and drying. If the plastic particles do not pass through the drying section for a long time, some of the plastic particles may not be fully dried. Therefore, a dehumidification and drying device for modified plastic particles is now proposed. Utility Model Content

[0006] In order to improve the problem that the plastic particles do not spend enough time in the drying section, which may result in some of the plastic particles not being fully dried, the utility model provides a dehumidification and drying device for modified plastic particles.

[0007] The utility model provides a dehumidification and drying device for modified plastic particles, which adopts the following technical scheme:

[0008] A dehumidification and drying device for modified plastic particles, comprising a first dispersion zone, and a cold air drying zone arranged below the first dispersion zone for blowing cold air to the modified plastic particles, a second dispersion zone having the same structure as the first dispersion zone is arranged below the cold air drying zone, a hot air drying zone for blowing hot air to the modified plastic particles is arranged below the second dispersion zone, a fan for supplying air is installed on one side of the first dispersion zone and the second dispersion zone by bolts, a discharge port for discharging is arranged below the hot air drying zone, and a support frame for supporting the dehumidification and drying device is welded to the outside of the hot air drying zone, a dispersion mechanism for breaking up the modified plastic particles is installed at the bottom of the first dispersion zone and the second dispersion zone, an inclined plate for blocking the modified plastic particles from falling straight down is arranged inside the cold air drying zone and the hot air drying zone, and a feed port is arranged above the first dispersion zone;

[0009] The dispersing mechanism includes a discharge pipe installed at the bottom of the first dispersing area and the second dispersing area, and a stirring shaft is arranged inside the discharge pipe, stirring rods are arranged around the stirring shaft, a driven bevel gear is fixed below the stirring shaft, and a driving bevel gear is arranged on one side of the driven bevel gear, a driving shaft is arranged below the driven bevel gear, and a frustum-conical dispersing disk is arranged below the driving shaft.

[0010] By adopting the above technical scheme, by arranging a plurality of groups of inclined plates inside the cold air drying zone and the hot air drying zone, the modified plastic particles falling into the cold air drying zone and the hot air drying zone can be discharged downward only after rolling on the multi-layer inclined plates, thereby increasing the residence time of the modified plastic particles in the cold air drying zone and the hot air drying zone, thereby fully drying the modified plastic particles. When the driving shaft and the stirring rod rotate synchronously, the stirring rod and the dispersion disk can be driven to rotate at the same time, thereby breaking up the modified plastic particles in the discharge pipe through the stirring rod, and the dispersion disk can rotate the modified plastic particles falling on the dispersion disk in all directions, thereby further preventing the modified plastic particles from sticking.

[0011] Optionally, one end of the active bevel gear is connected to a power output end of a driving motor, and the driving motor is fixedly mounted on one side of the discharge pipe by external bolts.

[0012] By adopting the above technical solution, the driving motor can directly drive the active bevel gear to rotate through the power output end, thereby driving the driven bevel gear to rotate through the active bevel gear.

[0013] Optionally, the driving shaft is connected to a connecting frame via a bearing, and the connecting frame is a cross structure, and the end of the connecting frame is welded to the inner wall of the discharge pipe.

[0014] By adopting the above technical solution, the connecting frame can support the driving shaft.

[0015] Optionally, a side baffle is provided on one side of the inclined plate, and the inclined plates are staggeredly distributed inside the cold air drying area and the hot air drying area.

[0016] By adopting the above technical solution, the staggered inclined plates can allow the modified plastic particles to fall layer by layer, thereby increasing the residence time of the modified plastic particles.

[0017] Optionally, one group of the inclined plates is fixed on the side baffle, and the other group of the inclined plates is fixed on the inner wall of the cold air drying area.

[0018] By adopting the above technical solution, the modified plastic particles can only fall through the gap between the inclined plate and the side wall.

[0019] Optionally, a heating plate parallel to the side baffle is further provided inside the hot air drying area, and a plurality of equidistant and evenly distributed electric heating wires are installed inside the heating plate.

[0020] By adopting the above technical solution, the wind from the fan is heated after passing through the heating plate to achieve a drying effect.

[0021] Optionally, the inclined plate and the side baffle are both hollow mesh structures, and the air outlet direction of the fan is perpendicular to the side baffle.

[0022] By adopting the above technical solution, the mesh diameter of the inclined plate needs to be smaller than the diameter of the modified plastic particles, and the inclined plate and side baffles with a hollow mesh structure will not block the free passage of wind.

[0023] In summary, the utility model has the following beneficial effects:

[0024] 1. The utility model arranges a plurality of groups of staggered inclined plates inside the cold air drying zone and the hot air drying zone, so that the modified plastic particles falling into the cold air drying zone and the hot air drying zone can be discharged downward through the gap only after rolling on the multi-layer inclined plates, thereby increasing the residence time of the modified plastic particles in the cold air drying zone and the hot air drying zone, thereby fully drying the modified plastic particles;

[0025] 2. The utility model adds a dispersion mechanism inside the first dispersion zone and the second dispersion zone. After the driving motor is started, the active bevel gear can be driven to rotate through the power output end, so that after the driven bevel gear rotates, the driving shaft and the stirring rod are driven to rotate synchronously, and the stirring rod and the dispersion disk can be driven to rotate. The modified plastic particles in the discharge pipe are dispersed by the stirring rod, and the dispersion disk can rotate the modified plastic particles falling on the dispersion disk in all directions, so as to further prevent the modified plastic particles from sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the utility model.

[0027] Figure 2 It is a schematic diagram of the internal structure of the hot air drying device of the utility model.

[0028] Figure 3 It is a structural schematic diagram of the first dispersion zone of the utility model.

[0029] Figure 4 It is a schematic diagram of the internal structure of the discharge pipe of the utility model.

[0030] Description of reference numerals:

[0031] 1. Feed inlet; 2. First dispersion zone; 3. Cold air drying zone; 4. Second dispersion zone; 5. Hot air drying zone; 6. Support frame; 7. Discharge port; 8. Fan; 9. Inclined plate; 10. Side baffle; 11. Heating plate; 12. Dispersion disc; 13. Discharge pipe; 14. Driven bevel gear; 15. Stirring shaft; 16. Active bevel gear; 17. Drive motor; 18. Drive shaft; 19. Connecting frame; 20. Stirring rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] Please refer to Figure 1-2 A dehumidification and drying device for modified plastic particles comprises a first dispersion zone 2, and a cold air drying zone 3 arranged below the first dispersion zone 2 for blowing cold air to the modified plastic particles, a second dispersion zone 4 having the same structure as the first dispersion zone 2 is arranged below the cold air drying zone 3, a hot air drying zone 5 for blowing hot air to the modified plastic particles is arranged below the second dispersion zone 4, a fan 8 for air supply is installed on one side of the first dispersion zone 2 and the second dispersion zone 4 by bolts, a discharge port 7 for discharging is arranged below the hot air drying zone 5, and a support frame 6 for supporting the dehumidification and drying device is welded to the outside of the hot air drying zone 5, a dispersing mechanism for breaking up the modified plastic particles is installed at the bottom of the first dispersion zone 2 and the second dispersion zone 4, an inclined plate 9 for blocking the modified plastic particles from falling straight down is arranged inside the cold air drying zone 3 and the hot air drying zone 5, and a feed port 1 is arranged above the first dispersion zone 2.

[0034] Reference Figure 3 and Figure 4The dispersing mechanism includes a discharge pipe 13 installed at the bottom of the first dispersing area 2 and the second dispersing area 4, and a stirring shaft 15 is arranged inside the discharge pipe 13, and stirring rods 20 are arranged around the stirring shaft 15. A driven bevel gear 14 is fixed below the stirring shaft 15, and a driving bevel gear 16 is arranged on one side of the driven bevel gear 14. One end of the driving bevel gear 16 is connected to the power output end of the driving motor 17, and the driving motor 17 is fixedly installed on one side of the discharge pipe 13 by external bolts. The driving motor 17 can directly drive the driving bevel gear 16 to rotate through the power output end, thereby driving the driven bevel gear 14 to rotate through the driving bevel gear 16, and the driven bevel gear 16 can rotate. A driving shaft 18 is arranged below the bevel gear 14, and a dispersing disk 12 with a truncated cone structure is arranged below the driving shaft 18. The driving shaft 18 is connected to a connecting frame 19 through a bearing, and the connecting frame 19 is a cross structure. The end of the connecting frame 19 is welded to the inner wall of the discharge pipe 13. The connecting frame 19 can support the driving shaft 18. When the driving shaft 18 and the stirring rod 20 rotate synchronously, the stirring rod 20 and the dispersing disk 12 can be driven to rotate at the same time, so that the modified plastic particles in the discharge pipe 13 are dispersed by the stirring rod 20, and the dispersing disk 12 can rotate the modified plastic particles falling on the dispersing disk 12 in all directions, so as to further prevent the modified plastic particles from sticking.

[0035] Reference Figure 2 A side baffle 10 is provided on one side of the inclined plate 9, and the inclined plates 9 are staggered inside the cold air drying zone 3 and the hot air drying zone 5. The staggered inclined plates 9 can allow the modified plastic particles to fall layer by layer, thereby increasing the residence time of the modified plastic particles. One group of inclined plates 9 is fixed on the side baffle 10, and the other group of inclined plates 9 is fixed on the inner wall of the cold air drying zone 3. The modified plastic particles can only fall through the gap between the inclined plates 9 and the side walls. A heating plate 11 is also provided inside the hot air drying zone 5, which is parallel to the side baffle 10, and a number of equidistant and evenly distributed electric heating wires are installed inside the heating plate 11. The wind of the fan 8 is heated after passing through the heating plate 11 to achieve the drying effect. The inclined plates 9 and the side baffles 10 are both hollow mesh structures, and the air outlet direction of the fan 8 is perpendicular to the side baffles 10. The mesh diameter of the inclined plates 9 needs to be smaller than the diameter of the modified plastic particles. The inclined plates 9 and the side baffles 10 with hollow mesh structures will not block the free passage of wind.

[0036] The implementation principle of the utility model is as follows: the modified plastic particles enter the first dispersion zone 2 through the feed port 1, fall into the cold air drying zone 3 along the discharge pipe 13 in the first dispersion zone 2, and after passing through the cold air drying zone 3, the fan 8 is started to blow air into the cold air drying zone 3, and the modified plastic particles are dried by cold air, and then enter the second dispersion zone 4, and fall into the hot air drying zone 5 along the discharge pipe 13 in the second dispersion zone 4, and the air blown by the fan 8 is heated by the heating plate 11 and enters the hot air drying zone 5, and the modified plastic particles are dried by hot air in the hot air drying zone 5 and discharged outward through the discharge port 7;

[0037] Each time the material enters the discharge pipe 13, the corresponding drive motor 17 is started. When the drive motor 17 drives the active bevel gear 16 to rotate through the power output end, so that the driven bevel gear 14 rotates, the drive shaft 18 and the stirring rod 20 are driven to rotate synchronously, and the stirring rod 20 and the dispersion plate 12 are driven to rotate. The modified plastic particles in the discharge pipe 13 are dispersed by the stirring rod 20, and the dispersion plate 12 can rotate the modified plastic particles falling on the dispersion plate 12 in all directions, so that the modified plastic particles enter the cold air drying area 3 or the hot air drying area 5;

[0038] Then, the fan 8 is started, and the modified plastic particles entering the cold air drying zone 3 or the hot air drying zone 5 can be discharged downward through the gap only after rolling on the multi-layer inclined plates 9, thereby increasing the residence time of the modified plastic particles in the cold air drying zone 3 and the hot air drying zone 5, thereby fully drying the modified plastic particles.

[0039] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A dehumidification and drying device for modified plastic particles, comprising a first dispersion zone (2), and a cold air drying zone (3) arranged below the first dispersion zone (2) for blowing cold air to the modified plastic particles, a second dispersion zone (4) having the same structure as the first dispersion zone (2) being arranged below the cold air drying zone (3), a hot air drying zone (5) for blowing hot air to the modified plastic particles being arranged below the second dispersion zone (4), a fan (8) for supplying air being bolted to one side of each of the first dispersion zone (2) and the second dispersion zone (4), a discharge port (7) for discharging material being arranged below the hot air drying zone (5), and a support frame (6) for supporting the dehumidification and drying device being welded to the outside of the hot air drying zone (5), characterized in that: The bottoms of the first dispersing zone (2) and the second dispersing zone (4) are both provided with dispersing mechanisms for breaking up the modified plastic particles, the interiors of the cold air drying zone (3) and the hot air drying zone (5) are both provided with inclined plates (9) for preventing the modified plastic particles from falling straight down, and a feed port (1) is provided above the first dispersing zone (2); The dispersing mechanism comprises a discharge pipe (13) installed at the bottom of the first dispersing area (2) and the second dispersing area (4), and a stirring shaft (15) is arranged inside the discharge pipe (13), stirring rods (20) are arranged around the stirring shaft (15), a driven bevel gear (14) is fixed below the stirring shaft (15), and a driving bevel gear (16) is arranged on one side of the driven bevel gear (14), a driving shaft (18) is arranged below the driven bevel gear (14), and a dispersing disk (12) with a frustum structure is arranged below the driving shaft (18).

2. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: One end of the active bevel gear (16) is connected to the power output end of the drive motor (17), and the drive motor (17) is fixedly mounted on one side of the discharge pipe (13) by means of external bolts.

3. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: The driving shaft (18) is connected to a connecting frame (19) via a bearing, and the connecting frame (19) is a cross structure, and the end of the connecting frame (19) is welded to the inner wall of the discharge pipe (13).

4. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: A side baffle (10) is provided on one side of the inclined plate (9), and the inclined plates (9) are staggeredly distributed inside the cold air drying area (3) and the hot air drying area (5).

5. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: One group of the inclined plates (9) is fixed on the side baffle (10), and the other group of the inclined plates (9) is fixed on the inner wall of the cold air drying area (3).

6. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: The hot air drying area (5) is further provided with a heating plate (11) parallel to the side baffle (10), and a plurality of evenly distributed and equidistant electric heating wires are installed inside the heating plate (11).

7. The dehumidification and drying device for modified plastic particles according to claim 1, characterized in that: The inclined plate (9) and the side baffle plate (10) are both hollow mesh structures, and the air outlet direction of the fan (8) is perpendicular to the side baffle plate (10).

Images