Hot air drying device for plastic granules

Abstract

The utility model discloses a hot air drying device for plastic granules, which comprises a cover body and a drying cylinder, the drying cylinder comprises a feeding section, a drying section and a discharging section, the drying section is positioned inside the cover body, and both the feeding section and the discharging section are exposed outside the cover body. The feeding section is provided with a feeding port, the discharging section is provided with a discharging port, and the drying section is movably connected with the feeding section and the discharging section. The utility model relates to the technical field of plastic drying equipment, in particular to a hot air drying device for plastic granules, which is provided with an internal and external convection type drying mechanism, and hot air synchronously dries the plastic granules from two directions, so that the drying efficiency is greatly improved, and further, in order to enable the continuity of the device to be stronger, the drying efficiency is improved. The spiral stirrer and the drying mechanism are organically combined, namely, the spiral stirrer is introduced to achieve the purpose of continuous material conveying, meanwhile, granules are dried through the spiral stirrer, the granules can be discharged while being dried, shutdown is not needed, and continuity is high.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic drying equipment, in particular to a hot air drying device for plastic pellets. Background Technique

[0002] At present, hot air drying is mostly used for drying plastic pellets. For example, a hot air drying device for plastic pellets disclosed in Chinese Patent No. CN207256617U and a negative pressure hot air drying device disclosed in CN209649240U both adopt the method of hot air drying.

[0003] There is generally a problem with the above-mentioned devices. First, the hot air outlet is located at the bottom of the device, and multiple layers of sieve meshes are arranged above. Therefore, when the hot air passes through the sieve meshes layer by layer, its heat energy is gradually consumed, so its drying efficiency is relatively low. Second, the continuity of the above-mentioned devices is poor. Once the pellets on the sieve mesh reach a certain amount, the penetration of the hot air is greatly limited at this time, and it is necessary to stop the machine for discharging.

[0004] Therefore, we propose a drying device with high drying efficiency and strong continuity. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a hot air drying device for plastic pellets, which solves the problems of low drying efficiency and poor continuity of the existing plastic pellet drying.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solutions: A hot air drying device for plastic pellets includes a cover body and a drying cylinder. The drying cylinder includes a feeding section, a drying section, and a discharging section. Among them, the drying section is located inside the cover body, and the feeding section and the discharging section are both exposed outside the cover body.

[0009] A feeding port is arranged on the feeding section, a discharging port is arranged on the discharging section, and the drying section is movably connected to both the feeding section and the discharging section.

[0010] A toothed ring is installed on the drying section, a rotating motor is arranged at the bottom of the cover body, a gear is installed at the output end of the rotating motor, and the gear meshes with the toothed ring.

[0011] A rotatable spiral feeding shaft is installed inside the drying cylinder, ventilation holes are formed on the surface of the spiral feeding shaft, and the spiral feeding shaft is driven by an external driving motor.

[0012] It further includes a hot air blower. The air outlet of the hot air blower is respectively connected with an external air duct and an internal air duct. The external air duct is located below the drying section, and an air outlet nozzle is arranged on the external air duct. The internal air duct extends into the interior of the spiral feeding shaft, and exhaust ports are formed on the internal air duct.

[0013] As a further preference, an air convection groove is formed in the middle of the drying section, and the air convection groove is completely located inside the cover body.

[0014] As a further preference, the drying cylinder is inclined.

[0015] (III) Beneficial effects

[0016] The utility model provides a hot air drying device for plastic pellets, which has the following beneficial effects:

[0017] For the hot air drying device for plastic pellets, by setting an internal and external convection drying mechanism, hot air dries the plastic pellets synchronously from two directions, thus greatly improving the drying efficiency. Further, in order to make the device more continuous, we organically combine the spiral stirrer with the drying mechanism, that is, introduce the spiral stirrer to achieve the purpose of continuous feeding. At the same time, the pellets are dried by the spiral stirrer, and the material can be discharged while drying without stopping the machine, with strong continuity. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of the utility model.

[0019] In the figure: 1, cover body; 2, drying cylinder; 21, feeding section; 22, drying section; 221, air convection groove; 23, discharging section; 3, feeding port; 4, discharging port; 5, gear ring; 6, rotating motor; 7, gear; 8, spiral feeding shaft; 9, driving motor; 10, ventilation holes; 11, hot air blower; 12, external air duct; 13, internal air duct; 14, air outlet nozzle; 15, exhaust ports. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the utility model.

[0021] Such as Figure 1As shown in the figure, the present utility model provides a technical solution: a hot air drying device for plastic pellets, which includes a housing 1 and a drying cylinder 2. The drying cylinder 2 is inclined to facilitate the feeding. The drying cylinder 2 includes a feeding section 21, a drying section 22, and a discharging section 23. Among them, the drying section 22 is located inside the housing 1. An air convection groove 221 is provided in the middle of the drying section 22, and the air convection groove 221 is completely located inside the housing 1 to avoid heat loss to the air. The feeding section 21 and the discharging section 23 are both exposed outside the housing 1.

[0022] A feeding port 3 is provided on the feeding section 21, a discharging port 4 is provided on the discharging section 23, and the drying section 22 is movably connected to both the feeding section 21 and the discharging section 23.

[0023] A gear ring 5 is installed on the drying section 22. A rotating motor 6 is provided at the bottom of the housing 1. A gear 7 is installed at the output end of the rotating motor 6. The gear 7 meshes with the gear ring 5. When the rotating motor 6 is turned on, the gear 7 can be driven to rotate, and then the drying section 22 can be driven to rotate independently. The purpose of such a design is that on the one hand, it can avoid the problem of thermal deformation caused by one side of the drying section 22 being in contact with the hot air flow for a long time, and on the other hand, it can make the pellets contact the hot air flow more evenly and fully.

[0024] A rotatable spiral feeding shaft 8 is installed inside the drying cylinder 2. Vent holes 10 are provided on the surface of the spiral feeding shaft 8. The spiral feeding shaft 8 is driven by an external driving motor 9.

[0025] It also includes a hot air blower 11. The air outlet of the hot air blower 11 is respectively connected with an external air duct 12 and an internal air duct 13. The external air duct 12 is located below the drying section 22, and an air outlet nozzle 14 is provided on the external air duct 12. The internal air duct 13 extends into the inside of the spiral feeding shaft 8. It should be noted that the internal air duct 13 does not rotate with the spiral feeding shaft 8. Exhaust ports 15 are provided on the internal air duct 13.

[0026] Meanwhile, the content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0027] During use, plastic pellets are poured into the drying cylinder 2 through the feeding port 3, and then the hot air blower 11 is turned on to send hot air into the external air duct 12 and the internal air duct 13 respectively. The external air duct 12 conveys hot air flow into the drying section 22 from the outside through the air outlet nozzle 14. The hot air flow can pass through the air convection groove 221 and directly enter the drying section 22 to contact the pellets. The internal air duct 13 sends out hot air flow through the exhaust ports 15 on it. The hot air flow is dissipated through the vent holes 10 on the spiral feeding shaft 8 and contacts the pellets from the inside, and convects with the hot air flow blown out by the external air duct 12, so as to dry the pellets evenly.

[0028] By starting the drive motor 9, the spiral feeding shaft 8 is driven to rotate, thereby driving the granular material to move in the drying cylinder 2. When the granular material is dried, it can be discharged through the discharge port 4.

[0029] In summary, for this hot air drying device for plastic granular materials, by setting up an internal and external convection drying mechanism, hot air dries the plastic granular materials synchronously from two directions, thus greatly improving the drying efficiency. Further, in order to make the device more continuous, we organically combine the spiral stirrer with the drying mechanism, that is, introduce the spiral stirrer to achieve the purpose of continuous feeding. At the same time, the granular materials are dried by the spiral stirrer, and the materials can be discharged while drying without stopping the machine, with strong continuity.

[0030] It should be noted that the electrical components appearing in this article are all electrically connected to the external main controller and 220V or 380V mains. And the main controller can be a conventional known device such as a computer for control. Its control principle, internal structure, control switch mode, etc. are all conventional means of the existing technology and are directly cited here without further elaboration. In this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot air drying device for plastic pellets, characterized in that: The invention comprises a housing (1) and a drying cylinder (2), wherein the drying cylinder (2) comprises a feeding section (21), a drying section (22) and a discharging section (23), wherein the drying section (22) is located inside the housing (1), and the feeding section (21) and the discharging section (23) are both exposed outside the housing (1); The feeding section (21) is provided with a feeding port (3), the discharging section (23) is provided with a discharging port (4), and the drying section (22) is movably connected to the feeding section (21) and the discharging section (23); A gear ring (5) is installed on the drying section (22), a rotating motor (6) is arranged at the bottom of the cover body (1), a gear (7) is installed at the output end of the rotating motor (6), and the gear (7) is meshed with the gear ring (5); A rotatable spiral feed shaft (8) is installed inside the drying cylinder (2), and a vent hole (10) is provided on the surface of the spiral feed shaft (8). The spiral feed shaft (8) is driven by an external drive motor (9); The invention also comprises a hot air blower (11), the air outlet of the hot air blower (11) is respectively connected to an outgoing air duct (12) and an inner air outlet duct (13), the outgoing air duct (12) is located below the drying section (22), and an air outlet nozzle (14) is arranged on the outgoing air duct (12), the inner air outlet duct (13) extends to the inside of the spiral feed shaft (8), and an exhaust port (15) is arranged on the inner air outlet duct (13).

2. A hot air drying device for plastic pellets according to claim 1, characterized in that: An air convection groove (221) is provided in the middle of the drying section (22), and the air convection groove (221) is completely located inside the cover body (1).

3. A hot air drying device for plastic pellets according to claim 1, characterized in that: The drying cylinder (2) is arranged inclined.

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