Drying device applied to coloring of TPU foamed beads

Abstract

The utility model discloses a drying device applied to TPU (thermoplastic polyurethane) foaming bead coloring, which comprises a tank body, a circulating mechanism is arranged in the tank body, a heating mechanism is arranged at the lower end of the circulating mechanism, the circulating mechanism comprises a vertical pipe arranged in the tank body, and the side wall of the vertical pipe is communicated with a plurality of connecting pipes arranged in a surrounding manner. According to the foaming bead drying device, the heating mechanism is arranged to be matched with the circulating mechanism, hot air blown out by the heating mechanism is used for driving foaming beads to move upwards, then the foaming beads fall on the conical plate, enter the connecting pipe through the flow dividing pipe and are driven by the hot air to move upwards again, and therefore the foaming beads move in the drying device in a circulating mode; according to the foaming bead drying device, the foaming beads are uniformly dried, and the foaming beads are sequentially arranged in the flow dividing pipe due to the arrangement of the flow dividing pipe, so that the situation that part of the foaming beads are not thoroughly dried is avoided, and it is ensured that all the foaming beads in the drying device can be rapidly dried through hot air.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware processing equipment, in particular to a drying device used for coloring TPU foam beads. Background Art

[0002] Thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber, abbreviated as TPU, is a (AB)n type block linear polymer, A is a polyester or polyether with a high molecular weight (1000~6000), B is a diol containing 2~12 straight-chain carbon atoms, and the chemical structure between the AB segments is diisocyanate. Thermoplastic polyurethane rubber relies on intermolecular hydrogen bond crosslinking or mild crosslinking between macromolecular chains. These two crosslinking structures are reversible as the temperature rises or falls. In the molten state or solution state, the intermolecular force is weakened, and after cooling or solvent evaporation, strong intermolecular forces are connected together to restore the original solid performance.

[0003] In a drying device for coloring TPU foam beads disclosed in my country's utility model CN220242078U, a built-in auger is used in conjunction with a blow pipe to achieve the operation of drying the TPU foam beads during the free fall process. Although the foam beads can be dried more evenly, the energy consumption of the equipment is increased due to the need to use an auger drive. On the other hand, some foam beads are prone to accumulate on the upper surface of the inclined plate, and then only the foam beads located on the upper layer of this part of the foam beads circulate in the drying device, resulting in incomplete drying of some foam beads. For this reason, we propose a drying device for coloring TPU foam beads to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art and proposes a drying device for coloring TPU foam beads.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A drying device for coloring TPU foam beads, comprising a tank body, a circulation mechanism is arranged in the tank body, and a heating mechanism is arranged at the lower end of the circulation mechanism;

[0007] The circulation mechanism includes a vertical pipe arranged in the tank body, the side wall of the vertical pipe is connected to a plurality of connecting pipes arranged around it, a plurality of diversion pipes are arranged at one end of the connecting pipe away from the vertical pipe, a conical plate is arranged between the diversion pipe and the vertical pipe, and a guide groove is arranged on the upper surface of the conical plate close to the diversion pipe, an elastic plate is arranged on the inner wall of the upper end of the tank body, and a discharging mechanism is arranged at the lower end of the vertical pipe.

[0008] Preferably, the heating mechanism includes an air inlet pipe connected to the vertical pipe, and a fan is arranged in the air inlet pipe, the upper end of the tank body is connected to an air outlet pipe, the air outlet pipe is connected to a dehumidification device, and the dehumidification device is connected to the air inlet pipe, and a motor heat module is also arranged in the air inlet pipe.

[0009] Preferably, a humidity sensor is provided in the air outlet pipe, and a conical screen is fixedly connected to the lower end of the air outlet pipe.

[0010] Preferably, the discharging mechanism includes an inclined plate slidably connected to the vertical pipe, a discharging port is opened on the side wall of the vertical pipe close to the inclined plate, and a guardrail is rotatably connected in the discharging port, a baffle is slidably connected to the upper surface of the vertical pipe close to the guardrail, and the baffle is arranged to abut against the guardrail.

[0011] Preferably, the connecting pipe is arranged at an angle, and an extension plate is arranged at the lower end of the connecting pipe.

[0012] Preferably, a heat conducting plate is fixedly connected to the side wall of the shunt pipe, and one end of the heat conducting plate away from the shunt pipe is disposed against the vertical pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model provides a heating mechanism in conjunction with a circulation mechanism, and utilizes the hot air blown by the heating mechanism to drive the foaming beads to move upward, and then the foaming beads fall on the conical plate, and enter the connecting pipe through the shunt pipe, and then are driven upward again by the hot air, so that the foaming beads circulate in the drying device, thereby realizing uniform drying of the foaming beads, and because the shunt pipe is provided, the foaming beads are arranged in sequence in the shunt pipe, thereby avoiding the situation that some foaming beads are not completely dried, and ensuring that the foaming beads in the drying device can be quickly dried by the hot air;

[0015] The utility model provides a heating mechanism and adopts a dehumidification device to dehumidify the hot air, so that the hot air circulates to dry the foamed beads, preventing external dust and impurities from entering the drying device and polluting the foamed beads, affecting the subsequent coloring effect, and at the same time reducing heat loss, reducing the energy consumption of the equipment in the drying operation, and achieving the effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a drying device for coloring TPU foam beads proposed by the utility model;

[0017] Figure 2 This is a schematic cross-sectional structure diagram of a drying device for coloring TPU foam beads proposed in the utility model;

[0018] Figure 3This is a schematic diagram of the conical plate structure of a drying device for coloring TPU foam beads proposed by the utility model;

[0019] Figure 4 The utility model discloses a schematic diagram of the structure of a discharging mechanism of a drying device for coloring TPU foam beads.

[0020] In the figure: 1. tank body; 2. vertical pipe; 3. connecting pipe; 4. diverter pipe; 5. conical plate; 6. guide groove; 7. elastic plate; 8. air inlet pipe; 9. air outlet pipe; 10. dehumidification equipment; 11. conical screen; 12. inclined plate; 13. guardrail; 14. baffle; 15. extension plate; 16. heat transfer plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 4 A drying device for coloring TPU foam beads comprises a tank body 1, the outer surface of the tank body 1 is coated with a heat preservation layer to prevent heat loss, a circulation mechanism is arranged in the tank body 1, and a heating mechanism is arranged at the lower end of the circulation mechanism;

[0023] The heating mechanism includes an air inlet pipe 8 connected to the vertical pipe 2, and a fan is arranged in the air inlet pipe 8. A filter is arranged above the fan to prevent the foaming beads from falling into the air inlet pipe 8 in the event of a power outage or fan failure. The upper end of the tank body 1 is connected to an air outlet pipe 9, and the air outlet pipe 9 is connected to a dehumidification device 10, and the dehumidification device 10 is connected to the air inlet pipe 8. A motor heat module is also arranged in the air inlet pipe 8.

[0024] In this design, the heating mechanism drives the airflow from bottom to top by the fan, and then returns the airflow to the dehumidification equipment 10 through the air outlet pipe 9. Finally, the hot air is heated again by the motor heat module after dehumidification and flows into the vertical pipe 2 through the air inlet pipe 8, so that the hot air circulates in the tank body 1 and the heating mechanism, reducing heat loss and preventing external dust and impurities from entering the drying equipment and causing contamination of the foamed beads, thereby affecting the coloring process of the foamed beads. It should be noted that if the water content of the foamed beads is reduced, the dehumidification equipment 10 can use an adsorbent type dehumidification method to absorb water vapor in the hot air, thereby further reducing heat loss. If the water content of the foamed beads is high, condensation is used for dehumidification.

[0025] The circulation mechanism comprises a vertical pipe 2 arranged in the tank body 1, the side wall of the vertical pipe 2 is connected with a plurality of connecting pipes 3 arranged around, a plurality of shunt pipes 4 are arranged at one end of the connecting pipe 3 away from the vertical pipe 2, a conical plate 5 is arranged between the shunt pipe 4 and the vertical pipe 2, and a guide groove 6 is arranged on the upper surface of the conical plate 5 close to the shunt pipe 4, an elastic plate 7 is arranged on the inner wall of the upper end of the tank body 1, and a discharging mechanism is arranged at the lower end of the vertical pipe 2;

[0026] In this design, the vertical pipe 2 is located at the center of the tank body 1. When the foam beads are dried, the hot air is driven by the blower to flow into the vertical pipe 2, thereby driving the foam beads in the vertical pipe 2 to move upward. In the process of moving upward, the hot air is used to exchange heat with the foam beads on the one hand, and the high-speed airflow is used to promote evaporation on the other hand, thereby improving the drying efficiency of the foam beads. After the foam beads move to the top of the vertical pipe 2, the circulation area of ​​the hot air becomes larger, the flow rate of the hot air decreases, and the foam beads rebound away from the vertical pipe 2 after contacting the elastic plate 7, and then fall on the conical plate 5. At this time, the foam beads fall into the shunt pipe 4 along the conical plate 5 and the guide groove 6 under the action of gravity, and then enter the connecting pipe 3 from the shunt pipe 4, and finally return to the vertical pipe 2 from the connecting pipe 3, thereby realizing the cyclic drying operation of the foam beads.

[0027] It should be noted that the inner diameter of the diverter tube 4 is larger than the outer diameter of the foamed beads and smaller than twice the outer diameter of the foamed beads, so that there is a gap between the foamed beads in the diverter tube 4 to prevent the foamed beads from getting stuck in the diverter tube 4. At the same time, it ensures that the foamed beads that first fall into the connecting tube 3 can first enter the connecting tube 3 and the vertical tube 2, ensuring that the foamed beads are in a state of sequential circulation to a certain extent.

[0028] The discharging mechanism comprises an inclined plate 12 slidably connected to the vertical pipe 2, a discharging port is provided on the side wall of the vertical pipe 2 close to the inclined plate 12, and a guard plate 13 is rotatably connected in the discharging port, a blocking rod 14 is slidably connected to the upper surface of the vertical pipe close to the guard plate 13, and the blocking rod 14 is arranged to abut against the guard plate 13;

[0029] In this design, the user pushes the lever upwards, and then rotates the guardrail 13 while sliding the inclined plate 12 into the vertical pipe 2. The fallen foam beads are then discharged from the discharge port along the inclined plate 12 to complete the unloading operation. It should be noted that the user should first slide the inclined plate 12 and then turn off the fan to prevent the foam beads from falling into the air inlet pipe 8 along the vertical pipe 2.

[0030] Furthermore, a humidity sensor is provided in the air outlet pipe 9, and a conical screen 11 is fixedly connected to the lower end of the air outlet pipe 9;

[0031] A humidity sensor is provided to monitor the water content in the circulating hot air, and whether the drying is completed can be determined based on the water content. A conical screen 11 is provided to cooperate with the elastic plate 7 to bounce the foam beads so that they fall on the conical plate 5, and to prevent broken foam beads or smaller foam beads from entering the dehumidification equipment 10 under the drive of the hot air.

[0032] Furthermore, the connecting tube 3 is arranged at an angle, and an extension plate 15 is provided at the lower end of the connecting tube 3, wherein the extension plate 15 is provided to block the airflow, thereby preventing the hot air from flowing toward the connecting tube 3 and causing the foamed beads to be unable to enter the vertical tube 2 through the connecting tube 3, thereby ensuring that the foamed beads can circulate in the drying device.

[0033] Furthermore, a heat conducting plate 16 is fixedly connected to the side wall of the diverter tube 4, and one end of the heat conducting plate 16 away from the diverter tube 4 is arranged to abut against the vertical tube 2, wherein the heat conducting plate 16 is arranged to conduct the heat of the vertical tube 2 to the diverter tube 4, so that the foaming beads can be dried in the process of moving toward the vertical tube 2, thereby further improving the drying efficiency of the foaming beads.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A drying device for coloring TPU foam beads, comprising a tank (1), characterized in that: A circulation mechanism is provided in the tank body (1), and a heating mechanism is provided at the lower end of the circulation mechanism; The circulation mechanism comprises a vertical pipe (2) arranged in the tank body (1); the side wall of the vertical pipe (2) is connected to a plurality of connecting pipes (3) arranged around the vertical pipe (2); a plurality of branch pipes (4) are arranged at one end of the connecting pipe (3) away from the vertical pipe (2); a conical plate (5) is arranged between the branch pipe (4) and the vertical pipe (2); and a guide groove (6) is arranged on the upper surface of the conical plate (5) close to the branch pipe (4); an elastic plate (7) is arranged on the inner wall of the upper end of the tank body (1); and a discharge mechanism is arranged at the lower end of the vertical pipe (2).

2. A drying device for coloring TPU foam beads according to claim 1, characterized in that: The heating mechanism comprises an air inlet pipe (8) connected to the vertical pipe (2), and a fan is arranged in the air inlet pipe (8); the upper end of the tank body (1) is connected to an air outlet pipe (9), the air outlet pipe (9) is connected to a dehumidification device (10), and the dehumidification device (10) is connected to the air inlet pipe (8); and a motor heat module is also arranged in the air inlet pipe (8).

3. A drying device for coloring TPU foam beads according to claim 2, characterized in that: A humidity sensor is arranged in the air outlet pipe (9), and a conical screen (11) is fixedly connected to the lower end of the air outlet pipe (9).

4. A drying device for coloring TPU foam beads according to claim 1, characterized in that: The discharge mechanism comprises an inclined plate (12) slidably connected to the vertical pipe (2); a discharge port is provided on a side wall of the vertical pipe (2) close to the inclined plate (12), and a guard plate (13) is rotatably connected in the discharge port; a stop rod (14) is slidably connected to an upper surface of the vertical pipe close to the guard plate (13), and the stop rod (14) is arranged to abut against the guard plate (13).

5. A drying device for coloring TPU foam beads according to claim 1, characterized in that: The connecting pipe (3) is arranged at an angle, and an extension plate (15) is arranged at the lower end of the connecting pipe (3).

6. A drying device for coloring TPU foam beads according to claim 2, characterized in that: A heat conducting plate (16) is fixedly connected to the side wall of the flow diverter pipe (4), and one end of the heat conducting plate (16) away from the flow diverter pipe (4) is arranged to abut against the vertical pipe (2).

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