Spiral tube type airflow dryer

Abstract

The utility model discloses a spiral tube type airflow dryer which comprises a driving seat, a drying cylinder group and a hot air box, the drying cylinder group is driven to rotate through a bearing wheel group and a motor, and alternate movement of materials is achieved through a spiral structure formed by an outer roller, an inner guide cylinder and a spiral drying cylinder. According to the drying machine, the densely-distributed airflow guide hole heating rotary blades and the reversely-rotating structure configuration material guide rotary blades are arranged, so that the heat conduction efficiency of airflow is effectively improved, and it is ensured that materials are evenly heated in the drying process. And through cooperation of accurate discharging control and reverse rotation, the materials can stably and continuously move in the drying process, and the drying effect is further improved. According to the utility model, through the optimized airflow and material contact mode, the heat exchange efficiency can be obviously improved, the uniform heating of the materials is ensured, and the drying effect and efficiency are further improved.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, specifically a spiral tube airflow dryer. Background Art

[0002] Existing spiral tube airflow dryers typically employ a static structure, where materials are transported and dried solely by gravity or simple mechanical devices during the drying process. A traditional spiral tube airflow dryer mainly consists of a spiral tube, a hot air unit, and a drive system. Hot air is delivered to the drying zone through pipes, and the material is propelled by the spiral structure and gradually discharged during the drying process. This type of traditional dryer has a relatively simple structure and mostly uses a static configuration, resulting in a passive heating process for the material, making it difficult to ensure uniform heating and limiting drying efficiency.

[0003] Traditional spiral tube airflow dryers suffer from uneven heating of materials due to the lack of effective material movement during the drying process. Materials rely solely on gravity or mechanical propulsion for transport. Furthermore, the low efficiency of hot air conduction and radiation during drying compromises the drying effect. In addition, traditional designs often fail to properly coordinate the spiral direction with the airflow, leading to unstable or uneven airflow, which further reduces drying efficiency and energy utilization. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0005] This utility model relates to a spiral tube airflow dryer, comprising: a drive base, a drying cylinder assembly, and a hot air box. The drive base is provided with a bearing roller assembly and a motor on its surface. The motor drives the bearing roller assembly to rotate on the top surface of the drive base. The drying cylinder assembly includes an outer drum, an inner guide cylinder, and a spiral drying cylinder, which are sequentially fitted from the outside to the inside. The inner sides of the outer drum and the inner guide cylinder are provided with guide vanes. A rolling ring that abuts against the surface of the bearing roller assembly is fixedly installed on the surface of the outer drum. A heating vane is fixedly installed on the inner side of the spiral drying cylinder, and the surface of the heating vane is provided with densely distributed airflow guide holes. The inner guide vanes of the outer drum and the inner guide cylinder rotate in opposite directions, and the inner rolling ring of the heating vane and the inner guide cylinder rotate in opposite directions. The hot air box and the feeder are located on both sides of the drying cylinder assembly and are rotatably connected to both ends of the outer drum. By setting up a drive base and bearing rollers and a motor on the surface of the drive base, the drying cylinder can be driven to rotate efficiently. With the inner spiral structure of the material guide blades and the heating blades arranged in opposite directions, the material can move alternately, promoting uniform heating of the material and thus improving the drying effect and efficiency.

[0006] In a preferred embodiment, this invention can be further configured such that the number of bearing roller groups is four and they are symmetrically arranged about the axis of the outer drum, with the bearing roller groups engaging in contact with the surface of the rolling ring for transmission. By increasing the number of bearing roller groups and their symmetrical arrangement, the driving force becomes more uniform, enabling smooth rotation of the drying drum assembly, ensuring uniform heating of the material during the drying process, and improving the drying effect.

[0007] In a preferred embodiment, this invention can be further configured such that: the outer periphery of the inner guide cylinder is fixedly connected to the inner guide vane of the outer drum, and the outer periphery of the spiral drying cylinder is fixedly connected to the inner guide vane of the inner guide cylinder; the outer drum, inner guide cylinder, and spiral drying cylinder are located on the same axis. Through a reasonable structural design, the outer drum, inner guide cylinder, and spiral drying cylinder are ensured to be on the same axis, effectively transmitting power and maintaining overall stability, thereby improving the efficiency of material drying.

[0008] In a preferred embodiment, this invention can be further configured such that: one end of the inner guide cylinder has a gap with the inner side of the outer roller to allow material to be guided from the inner side of the inner guide cylinder to the inner side of the outer roller; the surface of the outer roller has a discharge port and is fitted with a gate. By setting a gap between the inner guide cylinder and the outer roller, material can be smoothly guided from the inner guide cylinder to the inner side of the outer roller and discharged through the discharge port on the surface of the outer roller, ensuring smooth material flow during the drying process, avoiding blockages, and improving drying efficiency.

[0009] In a preferred embodiment, the present invention can be further configured such that: the other end of the inner guide cylinder is provided with a steam vent, and one end of the spiral drying cylinder and the inner side of the inner guide cylinder are provided with a gap for the material to be discharged from the inner side of the spiral drying cylinder to the inner side of the inner guide cylinder.

[0010] Specifically, after the material is fed into the inner side of the spiral drying drum via the feeder, it is pushed by heated vanes under the overall rotation of the drying drum assembly. The material is then guided through a gap at one end of the spiral drying drum to the inner guide drum. Inside the inner guide drum, the material is pushed in the opposite direction by the counter-rotating guide vanes, achieving a reverse movement, and is then output again to the inner side of the outer drum. Thus, the alternating movement of the material, achieved by the heated vanes and guide vanes inside the outer drum, inner guide drum, and spiral drying drum, ensures uniform heating and drying. This design, through the reverse movement and alternating pushing of the material, ensures that the material is fully heated in all parts, thereby improving the uniformity and efficiency of material drying.

[0011] In a preferred embodiment, this invention can be further configured such that the inner guide cylinder, spiral drying cylinder, heating vanes, and material guiding vanes are made of metal for rapid heat conduction, while the outer roller is made of insulating material to reduce heat loss. By selecting suitable metal and insulating materials, heat is conducted rapidly and heat loss is reduced, thereby effectively improving thermal efficiency, reducing energy consumption, and enhancing the overall drying effect.

[0012] In a preferred embodiment, this invention can be further configured such that the hot air box includes a fan and a PTC heater. The fan outlet is connected to the PTC heater to generate hot air, and the PTC heater port delivers hot air to the inside of the drying cylinder assembly via a duct to improve the drying effect. The combination of the fan and the PTC heater efficiently generates hot air and stably supplies it to the drying cylinder assembly, ensuring sufficient heat during the drying process and further improving the drying effect and work efficiency.

[0013] The beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, by setting a drive seat and a bearing wheel assembly and a motor on the surface of the drive seat, the drying cylinder assembly can be driven to rotate efficiently. With the inner spiral structure material guide blades and heating blades arranged in opposite directions, the material can move alternately, promote uniform heating of the material, and thus improve the drying effect and efficiency.

[0015] 2. In this utility model, through the reasonable structural design of the outer drum, inner guide drum and spiral drying drum in the drying drum assembly, as well as the setting of dense airflow guide holes on the inner side of the spiral drying drum heating blades, the heat radiation and heat conduction efficiency of the airflow can be improved, the drying effect can be enhanced, and the uniform heating of the material during the drying process can be ensured. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0017] Figure 2 This is a schematic diagram of the surface structure of the drive seat according to an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of a drying cylinder assembly according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the internal structure of the drying cylinder assembly according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the spiral drying cylinder structure according to one embodiment of the present invention.

[0021] Figure label:

[0022] 100. Drive base; 110. Bearing roller assembly; 120. Motor; 200. Drying cylinder assembly; 210. Outer drum; 220. Inner guide cylinder; 230. Spiral drying cylinder; 211. Roller ring; 212. Guide vane; 221. Exhaust hole; 231. Heating vane; 300. Hot air box; 400. Feeder. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0024] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of this invention.

[0025] The following is in conjunction with the appendix Figures 1-5 This invention describes a spiral tube airflow dryer provided by some embodiments of the present invention.

[0026] A spiral tube airflow dryer includes: a drive base 100, a drying cylinder assembly 200, and a hot air box 300. The drive base 100 has a bearing roller assembly 110 and a motor 120 on its surface. The motor 120 drives the bearing roller assembly 110 to rotate on the top surface of the drive base 100. The drying cylinder assembly 200 includes an outer roller 210, an inner guide cylinder 220, and a spiral drying cylinder 230, sequentially connected from the outside to the inside. The inner sides of both the outer roller 210 and the inner guide cylinder 220 are provided with guide vanes 212. The outer roller 210... A rolling ring 211 is fixedly installed on the surface of the roller assembly 110, and a heating blade 231 is fixedly installed on the inner side of the spiral drying cylinder 230. The surface of the heating blade 231 is provided with densely distributed airflow guide holes. The inner guide blades 212 of the outer cylinder 210 and the inner guide cylinder 220 rotate in opposite directions, and the inner rolling ring 211 of the heating blade 231 and the inner guide cylinder 220 rotate in opposite directions. The hot air box 300 and the feeder 400 are located on both sides of the drying cylinder assembly 200 and are rotatably connected to both ends of the outer cylinder 210.

[0027] With the above structure, the material moves alternately through the opposite rotation of the heating vane 231 and the guide vane 212 in the drying cylinder assembly 200, thereby improving the uniform heating of the material and ultimately achieving an optimized drying effect.

[0028] In this embodiment, the number of bearing roller assemblies 110 is four, and they are arranged symmetrically about the axis of the outer drum 210. The bearing roller assemblies 110 abut against the surface of the rolling ring 211 for transmission. By setting four bearing roller assemblies 110 on the drive base 100, and by symmetrically arranging these bearing roller assemblies 110 about the axis of the outer drum 210, a uniform driving force is effectively provided, ensuring that the entire drying drum assembly 200 rotates stably and smoothly, further guaranteeing the drying effect of the material.

[0029] In this embodiment, the outer periphery of the inner guide cylinder 220 is fixedly connected to the inner guide vane 212 of the outer drum 210, and the outer periphery of the spiral drying cylinder 230 is fixedly connected to the inner guide vane 212 of the inner guide cylinder 220. The outer drum 210, inner guide cylinder 220, and spiral drying cylinder 230 are located on the same axis. By fixing the outer drum 210, inner guide cylinder 220, and spiral drying cylinder 230 to the same axial position, the stability of the structure is ensured, the transmission efficiency is high, and the flowability and heating uniformity of the material in the drying cylinder assembly are improved.

[0030] In this embodiment, a gap is provided between one end of the inner guide cylinder 220 and the inner side of the outer roller 210 to allow material to be guided from the inner side of the inner guide cylinder 220 to the inner side of the outer roller 210. The surface of the outer roller 210 is provided with a discharge port and is equipped with a gate. By setting a gap between the inner guide cylinder 220 and the outer roller 210, the material can be smoothly guided in the drying cylinder assembly 200, avoiding blockage and material accumulation, and effectively improving the stability and efficiency of the overall drying process.

[0031] In this embodiment, the other end of the inner guide cylinder 220 is provided with a steam vent 221, and a gap is provided between one end of the spiral drying cylinder 230 and the inner side of the inner guide cylinder 220 for material to be guided from the inner side of the spiral drying cylinder 230 to the inner side of the inner guide cylinder 220. The material is fed into the inner side of the spiral drying cylinder 230 by the feeder 400. Under the action of the overall rotation of the drying cylinder assembly 200, the material is pushed by the heating blades 231, and guided into the inner side of the inner guide cylinder 220 through the gap at one end of the spiral drying cylinder 230. Then, under the reverse pushing action of the guide blades 212 inside the inner guide cylinder 220, the material achieves reverse movement. After passing through the inner side of the inner guide cylinder 220, the material re-enters the inner side of the outer drum 210, thereby achieving alternating movement, so that the material is heated evenly and the drying is completed. The reverse movement and alternating pushing of the material in the spiral pipe ensure that each part receives sufficient and uniform heat, effectively improving the drying efficiency of the material.

[0032] In this embodiment, the inner guide cylinder 220, spiral drying cylinder 230, heating vane 231, and material guide vane 212 are made of metal for rapid heat conduction, while the outer roller 210 is made of heat-insulating material to reduce heat loss. By selecting a suitable metal material to improve heat conduction efficiency and using a heat-insulating outer roller 210 to reduce heat loss, heat is concentrated during the drying process, thereby improving drying efficiency and saving energy.

[0033] In this embodiment, the hot air box 300 includes a fan and a PTC heater. The fan outlet is connected to the PTC heater to generate hot air, and the PTC heater outlet delivers hot air to the inside of the drying cylinder assembly 200 through a duct to improve the drying effect. The combination of the fan and the PTC heater can quickly generate high-temperature hot air, and deliver the hot air to the inside of the drying cylinder assembly 200 through the duct, ensuring temperature stability during the drying process and further improving the drying effect.

[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A spiral tube type airflow dryer, characterized in that, include: The assembly includes a drive base (100), a drying cylinder assembly (200), and a hot air box (300). The drive base (100) has a bearing roller assembly (110) and a motor (120) on its surface. The motor (120) drives the bearing roller assembly (110) to rotate on the top surface of the drive base (100). The drying cylinder assembly (200) includes an outer roller (210), an inner guide cylinder (220), and a spiral drying cylinder (230) that are sequentially connected from the outside to the inside. The inner sides of the outer roller (210) and the inner guide cylinder (220) are provided with guide vanes (212). The surface of the outer roller (210) is fixedly mounted. There is a rolling ring (211) that abuts against the surface of the bearing assembly (110). A heating blade (231) is fixedly installed on the inner side of the spiral drying cylinder (230), and the surface of the heating blade (231) is provided with densely distributed airflow guide holes. The inner guide blade (212) of the outer cylinder (210) and the inner guide cylinder (220) rotate in opposite directions, and the inner rolling ring (211) of the heating blade (231) and the inner guide cylinder (220) rotate in opposite directions. The hot air box (300) and the feeder (400) are located on both sides of the drying cylinder assembly (200) and are rotatably connected to both ends of the outer cylinder (210).

2. The spiral tube airflow dryer according to claim 1, characterized in that, The number of bearing roller assemblies (110) is four and they are arranged symmetrically about the axis of the outer roller (210). The bearing roller assemblies (110) are in contact with the surface of the roller ring (211) for transmission.

3. The spiral tube airflow dryer according to claim 1, characterized in that, The outer periphery of the inner guide cylinder (220) is fixedly connected to the inner guide blade (212) of the outer drum (210), and the outer periphery of the spiral drying cylinder (230) is fixedly connected to the inner guide blade (212) of the inner guide cylinder (220). The outer drum (210), the inner guide cylinder (220) and the spiral drying cylinder (230) are located on the same axis.

4. A spiral tube airflow dryer according to claim 1, characterized in that, One end of the inner guide cylinder (220) is provided with a gap between the inner side of the outer roller (210) and the inner side of the outer roller (210) for the material to be discharged from the inner side of the inner guide cylinder (220) to the inner side of the outer roller (210). The surface of the outer roller (210) is provided with a discharge port and is equipped with a gate.

5. A spiral tube airflow dryer according to claim 4, characterized in that, The other end of the inner guide cylinder (220) is provided with a steam vent (221), and one end of the spiral drying cylinder (230) and the inner side of the inner guide cylinder (220) are provided with a gap for the material to be discharged from the inner side of the spiral drying cylinder (230) to the inner side of the inner guide cylinder (220).

6. A spiral tube airflow dryer according to claim 1, characterized in that, The inner guide cylinder (220), spiral drying cylinder (230), heating vane (231), and material guide vane (212) are made of metal for rapid heat conduction, while the outer roller (210) is made of heat-insulating material to reduce heat loss.

7. A spiral tube airflow dryer according to claim 1, characterized in that, The hot air box (300) includes a fan and a PTC heater. The fan outlet is connected to the PTC heater to generate hot air. The PTC heater port is delivered to the inside of the drying cylinder group (200) through the air duct to improve the drying effect.

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