A drying device for packaging tape raw material

Abstract

The utility model relates to the field of plastic products, specifically disclose a kind of drying device of packaging tape raw material, including vacuum drying box, vacuum drying box is connected with vacuumizing equipment by pipeline, temperature maintaining mechanism is provided on the outer wall of vacuum drying box, temperature maintaining mechanism is covered on the surface of vacuum drying box by at least one pipeline, and temperature maintaining mechanism is communicated with the hollow side wall of vacuum drying box;Vacuum drying box and vacuumizing equipment are fixed on mobile support frame, and the left and right side and the upper and lower side and the rear side of mobile support frame are provided with the protective net for protecting vacuum drying box and vacuumizing equipment. Overcome the defects that material is unevenly heated, temperature is difficult to keep and equipment is inconvenient to move in prior art, provide a kind of drying device of packaging tape raw material.

Description

Technical Field

[0001] This utility model belongs to the field of material drying technology, specifically a drying device for raw materials in packaging tape. Background Technology

[0002] Before production, the plastic granules of the packaging tape need to be thoroughly dried to remove moisture and prevent defects such as bubbles and breakage during subsequent processing, thus ensuring product quality.

[0003] Existing drying devices come in various forms. For example, Chinese invention patent application CN120680646A discloses a plastic granule drying device, which uses an insulated drying chamber, a built-in pipeline unit, a water absorption unit, and a heating unit to form a hot air circulation drying system under normal pressure. Although this device can dry large quantities of materials, it still has the following limitations: First, it dries under normal pressure, where the boiling point of water is high, leaving room for improvement in drying efficiency, and it is difficult to effectively remove deep moisture; second, its heating pipeline runs through the inside of the drying chamber and comes into direct contact with the material, which may lead to localized overheating or uneven heating of the material, making it unsuitable for heat-sensitive materials; finally, the device has a fixed structure, making it inconvenient to move and lacking flexibility.

[0004] Vacuum drying technology is another solution. By lowering the ambient air pressure, the boiling point of water is reduced, allowing moisture to evaporate rapidly at a lower temperature, thus achieving efficient drying, especially beneficial for removing internal moisture from materials. However, traditional vacuum drying equipment also has some problems: in a vacuum environment, the interior of the chamber mainly relies on radiation heat transfer, with extremely poor convective heat transfer, resulting in slow overall heating of the material and difficulty in ensuring temperature uniformity; in addition, traditional equipment is usually bulky and has low integration, making it inconvenient to move and deploy between different production sites. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing vacuum drying devices, such as uneven heating of materials, difficulty in maintaining temperature, and inconvenience in moving the equipment, and to provide a drying device for raw materials in packaging.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] The technical solution adopted by this utility model to solve its technical problem is: a drying device for packaging tape raw materials, including a vacuum drying chamber, the vacuum drying chamber is connected to a vacuum pumping device through a pipeline, a temperature holding mechanism is provided on the outer wall of the vacuum drying chamber, the temperature holding mechanism is covered on the surface of the vacuum drying chamber through at least one pipe, and the temperature holding mechanism is connected to the hollow side wall of the vacuum drying chamber.

[0008] The vacuum drying chamber and vacuum pumping equipment are fixed on a movable support frame. Protective nets are provided on the left, right, top, bottom, and rear sides of the movable support frame to protect the vacuum drying chamber and vacuum pumping equipment.

[0009] In one feasible embodiment, a shelf is provided inside the vacuum drying chamber. The shelf includes a rotating shaft, which is sealed and fixed to the left and right inner walls of the vacuum drying chamber. One end of the rotating shaft passes through the side wall of the vacuum drying chamber and is connected to an external coupling.

[0010] A pair of main material support brackets are installed on the rotating shaft, and a connecting rod is installed between the main material support brackets. A platform with the storage surface always facing upward is suspended on the connecting rod.

[0011] The coupling is connected to a gearbox fixed on a movable support frame, and the input shaft of the gearbox is connected to the motor via a synchronous belt.

[0012] In one feasible embodiment, the temperature holding mechanism includes a hot gas generating device disposed in front of a movable support frame, a hot gas transfer tank fixed to the upper surface of the vacuum drying chamber, the hot gas generating device and the hot gas transfer tank being connected via a first pipe, and three pipes being disposed on the hot gas transfer tank covering the surface of the vacuum drying chamber.

[0013] In one feasible embodiment, the vacuuming equipment includes a vacuum pump located at the bottom of a movable support frame, an input pipe on which the input pipe enters the vacuum drying chamber from the upper surface of the chamber, and an output pipe on which the output pipe is matched with a collection box located at the bottom of the movable support frame.

[0014] In one feasible embodiment, the opening of the vacuum drying chamber is located on the front of the movable support frame and extends out of the movable support frame; a sealing door is provided on the opening.

[0015] In one feasible implementation, a control panel is provided on the front of the movable support frame, located next to the opening of the vacuum drying chamber.

[0016] The present invention provides a drying device for raw materials in packaging tape, which has the following beneficial effects:

[0017] This application combines vacuum drying with an external temperature holding mechanism. The vacuum environment effectively lowers the boiling point of water, allowing internal moisture to evaporate rapidly. Simultaneously, the temperature holding mechanism located on the outer wall of the chamber provides uniform and gentle heating from the outside, compensating for heat loss under vacuum and maintaining a stable internal temperature. This "internal dehumidification, external heating" mode perfectly solves the problems of uneven internal heating in traditional vacuum drying and the low efficiency and overheating issues of traditional hot air drying, achieving a highly efficient, uniform, and gentle drying effect. This is fundamentally different from the method in existing technology CN120680646A, which relies on a hot air pipe penetrating the material under normal pressure for drying, avoiding localized overheating of the material, and is particularly suitable for temperature-sensitive packaging raw materials.

[0018] Furthermore, the racks and drive mechanisms inside the drying chamber allow the platform and the material on it to rotate or oscillate slowly within the vacuum drying chamber. This dynamic process ensures that all surfaces of the material receive uniform heat radiation from the chamber walls and allow internal water vapor to escape, further eliminating drying dead zones and significantly improving drying uniformity and efficiency.

[0019] This application integrates the core components of the vacuum drying chamber, vacuum equipment, temperature holding mechanism, and control system onto a single mobile support frame, forming a compact and complete drying unit. This allows the equipment to be easily moved between different workstations within the workshop or flexibly deployed according to production needs, greatly improving equipment utilization and production flexibility.

[0020] The protective netting installed on the entire mobile support frame of this application not only prevents personnel from accidentally coming into contact with the high-temperature vacuum drying chamber or moving transmission components, but also protects the core equipment from external collision damage. Meanwhile, placing components such as the vacuum pump and collection box at the bottom of the mobile support frame lowers the equipment's center of gravity, improves stability, and optimizes space utilization, resulting in a more rational overall structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0022] Figure 2 This is a schematic diagram of the structure inside the protective netting in Example 1;

[0023] Figure 3 This is a side view of Embodiment 1;

[0024] Figure 4 for Figure 3 Sectional view at point AA;

[0025] Figure 5 This is a structural diagram of the shelving unit;

[0026] The following are the labels in the diagram: 1. Vacuum drying chamber; 2. Vacuum equipment; 21. Vacuum pump; 22. Input pipe; 23. Output pipe; 24. Collection box; 3. Temperature holding mechanism; 31. Hot gas generator; 32. Hot gas transfer tank; 4. Movable support frame; 5. Protective net; 6. Shelf; 61. Rotating shaft; 62. Main material support bracket; 63. Connecting rod; 64. Platform; 65. Gearbox; 66. Motor; 67. Coupling; 7. Control panel. Detailed Implementation

[0027] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that all directional indicators (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] Example 1, please refer to Figure 1-3 As shown, this embodiment provides a drying device for packaging raw materials, which includes a vacuum drying chamber 1, a vacuum pumping device 2, a temperature holding mechanism 3, and a movable support frame 4.

[0030] The vacuum drying chamber 1 is used to hold the raw packaging tape to be dried. The vacuum equipment 2 is connected to the interior of the vacuum drying chamber 1 via pipelines and is used to create a vacuum inside the chamber, reducing the temperature at which moisture evaporates. The temperature maintaining mechanism 3 is located on the outer wall of the vacuum drying chamber 1 and its function is to heat the chamber from the outside to maintain the temperature required for the material inside during the drying process.

[0031] The temperature maintaining mechanism 3 covers the outer surface of the vacuum drying chamber 1 via three pipes. The pipes are preferably coiled or serpentine in shape; only straight pipes are shown in the accompanying drawings. These pipes can carry heat media such as hot water, hot oil, or steam. Figure 3In one specific embodiment, the temperature holding mechanism 3 includes a hot air generating device 31 located at the front of the movable support frame 4 and a hot air transfer tank 32 fixed to the upper surface of the vacuum drying chamber 1. Hot air generated by the hot air generating device 31 is delivered to the hot air transfer tank 32 through a first pipe, and then evenly covers the surface of the chamber via three branch pipes for heat exchange. Furthermore, the temperature holding mechanism 3 is connected to the hollow sidewall of the vacuum drying chamber 1 itself, allowing the heat medium to be introduced into the hollow interlayer for more uniform heating over a larger area. The two methods described above, "pipe covering the surface" and "temperature holding mechanism 3 connected to the hollow sidewall," can be used individually or in combination.

[0032] To enhance the flexibility and safety of the equipment, the vacuum drying chamber 1 and the vacuum pumping device 2 are jointly fixed to a mobile support frame 4. This mobile support frame 4 preferably has casters at the bottom. Protective nets 5 are installed on the left, right, top, bottom, and rear sides of the mobile support frame 4. These protective nets 5 effectively prevent operators from accidentally contacting the high-temperature chamber or moving parts, and also prevent collisions with external objects.

[0033] Example 2, based on Example 1, such as Figure 4 and Figure 5 As shown, this embodiment adds a rotatable shelf 6 inside the vacuum drying chamber 1. The shelf 6 includes a rotating shaft 61, which is fixed to the left and right inner walls of the chamber via bearings or other sealing structures, with one end extending out of the chamber and connected to an external coupling 67. A pair of material support main supports 62 are fixedly mounted on the rotating shaft 61, and the two main supports 62 are connected by multiple connecting rods 63. Multiple material-carrying platforms 64 are suspended from these connecting rods 63. These platforms 64 are connected to the connecting rods 63 via hinges or other means to ensure that their storage surface remains upward during rotation, preventing material spillage.

[0034] The drive mechanism of the shelf 6 includes a motor 66 fixed on the movable support frame 4 and a reduction gearbox 65. The output shaft of the motor 66 is connected to the input shaft of the reduction gearbox 65 via a synchronous belt. The output shaft of the reduction gearbox 65 is connected to the rotating shaft 61 via a coupling 67. Starting the motor 66 will drive the shelf 6 and the materials on it to rotate slowly in a vacuum environment, achieving dynamic and uniform drying of the materials.

[0035] Example 3, combined with Figure 2 , Figure 3 and Figure 4This embodiment details the vacuuming device 2. The vacuuming device 2 includes a vacuum pump 21 mounted at the bottom of the movable support frame 4. The inlet of the vacuum pump 21 is connected to the interior of the vacuum drying chamber 1 via an input pipe 22, which preferably connects to the upper surface of the chamber. The outlet of the vacuum pump 21 is connected to an output pipe 23, which leads the extracted water vapor and other gases to a collection box 24 also located at the bottom of the movable support frame 4. A desiccant or a condenser can be placed inside the collection box 24 to collect and process the water vapor.

[0036] Furthermore, the opening of the vacuum drying chamber 1 is located on the front of the movable support frame 4, and this opening extends outward for easy loading and unloading of materials. A sealing door is provided at the opening to ensure a vacuum seal. On the front of the movable support frame 4, next to the opening of the vacuum drying chamber 1, a control panel 7 is also installed. This control panel 7 integrates control and parameter setting functions for components such as the vacuum pumping device 2, the temperature holding mechanism 3, and the motor 66, facilitating user operation.

[0037] The working principle of the above embodiment is as follows: During use, the raw packaging material is placed on the platform 64, and the sealed door is closed. The vacuum equipment 2 is activated via the control panel 7 to evacuate the vacuum drying chamber 1. Simultaneously, the temperature holding mechanism 3 and the rack drive motor 66 are activated. Under the combined action of vacuum and external heating, the moisture in the material evaporates rapidly and is removed. The slow rotation of the rack ensures uniform heating and dehydration of all parts of the material. After drying is complete, the vacuum is broken, the sealed door is opened, and the material is removed.

[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A drying apparatus for packaging raw materials, characterized in that, Includes a vacuum drying chamber (1), the vacuum drying chamber (1) is connected to a vacuum pumping device (2) through a pipeline, a temperature holding mechanism (3) is provided on the outer wall of the vacuum drying chamber (1), the temperature holding mechanism (3) is covered on the surface of the vacuum drying chamber (1) through at least one pipe, and the temperature holding mechanism (3) is connected to the hollow side wall of the vacuum drying chamber (1); The vacuum drying chamber (1) and the vacuum pumping device (2) are fixed on the movable support frame (4). The left and right sides, upper and lower sides and the rear side of the movable support frame (4) are provided with protective nets (5) to protect the vacuum drying chamber (1) and the vacuum pumping device (2).

2. The drying apparatus for raw materials of packaging tape according to claim 1, characterized in that, The vacuum drying chamber (1) is provided with a shelf (6), which includes a rotating shaft (61). The rotating shaft (61) is sealed and fixed on the left and right inner walls of the vacuum drying chamber (1), and one end of it passes through the side wall of the vacuum drying chamber (1) and is connected to the external coupling (67). A pair of material support main brackets (62) are provided on the rotating shaft (61), and a connecting rod (63) is provided between the material support main brackets (62). A platform (64) with the storage surface always facing upward is suspended on the connecting rod (63). The coupling (67) is fixed to the gearbox (65) on the movable support frame (4), and the input shaft of the gearbox (65) is connected to the motor (66) via a synchronous belt.

3. The drying apparatus for packaging tape raw materials according to claim 1, characterized in that, The temperature holding mechanism (3) includes a hot gas generating device (31) disposed in front of the movable support frame (4) and a hot gas transfer tank (32) fixed on the upper surface of the vacuum drying chamber (1). The hot gas generating device (31) and the hot gas transfer tank (32) are connected through a first pipe. Three pipes are provided on the hot gas transfer tank (32) to cover the surface of the vacuum drying chamber (1).

4. The drying apparatus for packaging tape raw materials according to claim 1, characterized in that, The vacuum pump (2) includes a vacuum pump (21) located at the bottom of the movable support frame (4). The vacuum pump (21) is provided with an input pipe (22), which enters the vacuum drying chamber (1) from the upper surface of the vacuum drying chamber (1). The vacuum pump (21) is provided with an output pipe (23), which is matched with a collection box (24) located at the bottom of the movable support frame (4).

5. The drying apparatus for packaging tape raw materials according to claim 2, characterized in that, The opening of the vacuum drying chamber (1) is located on the front of the movable support frame (4) and the opening extends out of the movable support frame (4); a sealing door is provided on the opening.

6. The drying apparatus for packaging tape raw materials according to claim 1 or 5, characterized in that, The movable support frame (4) has a control panel (7) located next to the opening of the vacuum drying chamber (1) on its front side.

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