Bottle preform drying device

Abstract

The utility model provides a bottle preform drying device, which relates to the technical field of bottle preform drying, and comprises a drying box, a rotating shaft is rotatably arranged in the drying box, a driving assembly for driving the rotating shaft to rotate is arranged at the bottom of the drying box, a plurality of material supporting plates for placing bottle preforms are arranged on the rotating shaft, and locking assemblies are arranged on the material supporting plates. The driving assembly drives the rotating shaft to rotate, the retainer plate is locked on the rotating shaft through a locking assembly, the drying box is provided with a hot air assembly used for feeding and discharging hot air into the drying box, and the top of the drying box is provided with a moisture discharging port. Compared with the prior art, a traditional mode that the bottle preforms are placed in a static mode is broken through, the bottle preforms can be blown by hot air dynamically in an omnibearing mode and make full contact with the hot air, the drying process is accelerated, the production efficiency is effectively improved, the situation that the drying degree of the bottle preforms is not high is avoided, and the drying quality of the bottle preforms is guaranteed.

Description

Technical Field

[0001] This application relates to the field of preform drying technology, and more specifically, to a preform drying apparatus. Background Technology

[0002] In the plastic bottle manufacturing industry, the drying process of bottle preforms is crucial. During production, plastic bottle preforms often contain a certain amount of moisture on their surface and inside due to factors such as storage environment and processing technology. If subsequent processing such as blow molding is carried out directly, the moisture will quickly vaporize at high temperatures, leading to quality problems such as bubbles, deformation, and reduced strength in the molded plastic bottles, seriously affecting the product qualification rate and quality.

[0003] In current bottle preform drying operations, hot air is commonly used to dry the preforms. However, the preforms are usually placed statically inside the drying chamber. Due to the lack of an effective dynamic adjustment mechanism in the drying chamber, it is difficult for hot air to contact each preform in an all-round and uniform manner, resulting in a slow drying process, which seriously affects production efficiency and is also very likely to cause uneven drying of the preforms. Summary of the Invention

[0004] The purpose of this application is to provide a preform drying device that can solve the technical problems in existing preform drying operations, where the preforms are placed statically in the drying chamber, and the drying chamber lacks an effective dynamic adjustment mechanism, resulting in the inability of hot air to contact the preforms evenly, leading to slow drying process, low efficiency, and inconsistent drying degree of the preforms.

[0005] This application provides a preform drying device, including a drying chamber. A rotating shaft is rotatably arranged inside the drying chamber. A driving assembly for driving the rotating shaft to rotate is provided at the bottom of the drying chamber. A plurality of material support plates for placing preforms are provided on the rotating shaft. A locking assembly is provided on the material support plate, and the material support plate is locked to the rotating shaft by the locking assembly. A hot air assembly for introducing and discharging hot air into the drying chamber is provided on the drying chamber. A dehumidification port is provided at the top of the drying chamber.

[0006] Furthermore, the locking assembly includes a sleeve and a locking bolt. The sleeve is fixed in the middle of the material support plate and is movably sleeved on the rotating shaft. One side of the sleeve is provided with a threaded hole that matches the locking bolt. The locking bolt is threadedly connected to the sleeve through the threaded hole, and the end of the locking bolt can abut against the rotating shaft.

[0007] Furthermore, the material support plate is evenly provided with a plurality of bottle support holes, which are staggered.

[0008] Furthermore, the drive assembly includes a drive motor and a reducer, both of which are fixed to the bottom of the drying chamber. The lower end of the rotating shaft extends outside the drying chamber, and the drive motor is connected to the lower end of the rotating shaft through the reducer.

[0009] Furthermore, the hot air assembly includes a first hot air blower and a second hot air blower, and a set of mounting holes communicating with the interior of the drying chamber are symmetrically arranged at the bottom of the drying chamber. The first hot air blower and the second hot air blower are respectively installed in the two mounting holes.

[0010] Furthermore, an exhaust fan is provided at the vent, a sealing ring is provided at the connection between the rotating shaft and the drying chamber, and a sealed door is provided on one side of the drying chamber.

[0011] Furthermore, the inner wall of the drying chamber is provided with a circulating air duct, the top of the drying chamber is provided with a circulating fan connected to the circulating air duct, and an exhaust fan is provided at the exhaust port.

[0012] The beneficial effects of this utility model are:

[0013] This invention drives the rotating shaft to rotate via a drive assembly. Since the support plate is locked onto the rotating shaft by a locking assembly, the rotation of the shaft drives the support plate to rotate, causing the preforms placed on the support plate to rotate with the support plate. Compared with the prior art, this breaks the traditional mode of static placement of preforms, allowing the preforms to receive hot air blowing from all directions and to fully contact the hot air, thus accelerating the drying process, effectively improving production efficiency, avoiding uneven drying of preforms, and ensuring consistent drying quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0016] Figure 2 These are cross-sectional views of some embodiments of this application;

[0017] Figure 3 This is a schematic diagram of the structure of the rotating shaft and the material support plate in some embodiments of this application;

[0018] Figure 4 This is a top view of the material tray in some embodiments of this application;

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Drying oven; 11. Exhaust vent; 111. Exhaust fan; 2. Rotating shaft; 3. Drive assembly; 31. Drive motor; 32. Reducer; 4. Material support plate; 41. Bottle support hole; 5. Locking assembly; 51. Sleeve; 52. Locking bolt; 6. Hot air assembly; 61. First hot air blower; 62. Second hot air blower; 7. Sealing ring; 8. Sealing door; 9. Circulating air duct; 10. Circulating fan. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific implementation examples:

[0028] like Figure 1 and Figure 2 As shown, this application provides a preform drying device, including a drying chamber 1. A rotating shaft 2 is rotatably mounted inside the drying chamber 1. A drive assembly 3 for driving the rotating shaft 2 is provided at the bottom of the drying chamber 1. Multiple support plates 4 for placing preforms are provided on the rotating shaft 2. Locking assemblies 5 are provided on the support plates 4, and the support plates 4 are locked to the rotating shaft 2 by the locking assemblies 5. A hot air assembly 6 for introducing and discharging hot air into the drying chamber 1 is provided on the drying chamber 1. A dehumidification port 11 is provided at the top of the drying chamber 1. In use, the operator uses the locking assemblies 5 on the support plates 4 to fix the support plates 4 to the rotating shaft 2, and then places the preforms on the support plates 4. The hot air assembly 6 starts working, sending hot air into the drying chamber 1, and the drive assembly 3 drives the shaft 2. As the shaft 2 rotates, the support plate 4 is locked to the shaft 2 by the locking assembly 5. When the shaft 2 rotates, it drives the support plate 4 to rotate, causing the preforms placed on the support plate 4 to rotate with the support plate 4. Hot air can blow on the preforms from different angles, exchange heat with the preforms, and remove the moisture from the surface and inside of the preforms to achieve the drying purpose. During the drying process, the moisture evaporates to form hot and humid air, which is finally discharged through the exhaust port 11 at the top of the drying chamber 1. Compared with the existing technology, this breaks the traditional mode of placing the preforms statically, allowing the preforms to receive hot air blowing from all directions and dynamically, making full contact with the hot air, accelerating the drying process, effectively improving production efficiency, avoiding uneven drying of preforms, and ensuring consistent drying quality of preforms.

[0029] like Figure 2As shown, the locking assembly 5 includes a sleeve 51 and a locking bolt 52. The sleeve 51 is fixed in the middle of the material support plate 4 and is movably sleeved on the rotating shaft 2. One side of the sleeve 51 is provided with a threaded hole that matches the locking bolt 52. The locking bolt 52 is threadedly connected to the sleeve 51 through the threaded hole. The end of the locking bolt 52 can abut against the rotating shaft 2. In this embodiment, in order to improve the locking effect, the cross-section of the sleeve 51 is square, the lower end of the rotating shaft 2 is a cylindrical section, and the rest are rectangular cylindrical sections. The lower cylindrical section is rotatably connected to the drying box 1. When it is necessary to fix the position of the material support plate 4, the operator screws the locking bolt 52 into the threaded hole until the end of the locking bolt 52 abuts tightly against the rotating shaft 2, thereby firmly fixing the material support plate 4 in a specific position on the rotating shaft 2. The setting of the locking assembly 5 makes the distance between two adjacent material support plates 4 adjustable, avoiding the contact of the bottle preforms on two adjacent material support plates and affecting the drying effect, and can adapt to the drying needs of bottle preforms of different specifications.

[0030] like Figure 3 and Figure 4 As shown, the support plate 4 is uniformly provided with multiple bottle support holes 41, which are staggered. In the prior art, the preform consists of the right bottle mouth and the unblown bottle body. The bottle body is often smaller than the bottle mouth. The bottle support holes 41 provide a placement point for the preform. When the bottom of the preform is inserted into the bottle support hole 41, the edge of the bottle support hole 41 supports the preform, ensuring that the preform remains stable and upright on the support plate 4, which is convenient for subsequent drying. The staggered arrangement of the bottle support holes 41 allows the preforms placed on the support plate 4 to be staggered, so that each preform can fully contact the hot air, improve the uniformity of drying, and ensure the consistency of the preform drying quality.

[0031] like Figure 2 As shown, the drive assembly 3 includes a drive motor 31 and a reducer 32 (which are existing technologies and will not be described in detail here). Both the drive motor 31 and the reducer 32 are fixed at the bottom of the drying chamber 1. The lower end of the rotating shaft 2 extends outside the drying chamber 1. The drive motor 31 is connected to the lower end of the rotating shaft 2 through the reducer 32. Through the reduction action of the reducer 32, the high-speed rotation of the drive motor 31 can be precisely adjusted to a speed suitable for the preform drying operation. Preforms of different materials and specifications may require different rotation speeds during drying to ensure uniform contact of hot air and drying effect.

[0032] like Figure 2As shown, the hot air assembly 6 includes a first hot air blower 61 and a second hot air blower 62. A set of mounting holes communicating with the interior of the drying chamber 1 are symmetrically arranged at the bottom of the drying chamber 1. The first hot air blower 61 and the second hot air blower 62 are respectively installed in the two mounting holes. The symmetrical installation of the first hot air blower 61 and the second hot air blower 62 allows hot air to enter evenly from both sides of the bottom of the drying chamber 1, which can form a relatively uniform heat field distribution inside the chamber. In addition, when one of the hot air blowers fails, the other hot air blower can still continue to work, maintaining a certain supply of hot air inside the drying chamber 1, reducing the risk of production stoppage due to equipment failure, and improving the stability and continuity of production.

[0033] like Figure 1 As shown, an exhaust fan 111 is installed at the exhaust port 11. The exhaust fan 111 at the exhaust port 11 can quickly and efficiently exhaust hot and humid air, which helps to improve the drying efficiency. A sealing ring 7 is provided at the connection between the rotating shaft 2 and the drying chamber 1. A sealing door 8 is provided on one side of the drying chamber 1. The sealing door 8 is provided with a sealing strip. The sealing strip fills the gap between the sealing door 8 and the drying chamber 1. The setting of the sealing door 8 and the sealing ring 7 ensures that the drying chamber 1 maintains good sealing performance and reduces heat loss caused by hot air leakage.

[0034] like Figure 2 As shown, the inner wall of the drying chamber 1 is equipped with a circulating air duct 9, and the top of the drying chamber 1 is equipped with a circulating fan 10 connected to the circulating air duct 9. An exhaust fan 111 is installed at the exhaust port 11. Hot air is drawn from the drying chamber 1 into the circulating air duct 9 under the action of the circulating fan 10. Guided by the circulating air duct 9, the hot air flows along a predetermined path and returns to the interior of the drying chamber 1, forming a circulating airflow. This increases the frequency and time of contact between the hot air and the preform, further accelerating the drying process.

[0035] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for drying bottle preforms, characterized in that: The device includes a drying chamber, inside which a rotating shaft is rotatably mounted. The bottom of the drying chamber is provided with a drive assembly for driving the rotating shaft to rotate. The rotating shaft is provided with multiple material support plates for placing bottle preforms. Each material support plate is provided with a locking assembly, and the material support plate is locked to the rotating shaft by the locking assembly. The drying chamber is provided with a hot air assembly for introducing and discharging hot air into the drying chamber. The top of the drying chamber is provided with a dehumidification vent.

2. The preform drying apparatus according to claim 1, characterized in that: The locking assembly includes a sleeve and a locking bolt. The sleeve is fixed in the middle of the material support plate and is movably sleeved on the rotating shaft. One side of the sleeve is provided with a threaded hole that matches the locking bolt. The locking bolt is threadedly connected to the sleeve through the threaded hole, and the end of the locking bolt can abut against the rotating shaft.

3. The preform drying apparatus according to claim 1, characterized in that: The material support plate is evenly provided with multiple bottle support holes, which are staggered.

4. The preform drying apparatus according to claim 1, characterized in that: The drive assembly includes a drive motor and a reducer. Both the drive motor and the reducer are fixed to the bottom of the drying chamber. The lower end of the rotating shaft extends outside the drying chamber. The drive motor is connected to the lower end of the rotating shaft through the reducer.

5. The preform drying apparatus according to claim 1, characterized in that: The hot air assembly includes a first hot air blower and a second hot air blower. A set of mounting holes communicating with the interior of the drying chamber are symmetrically arranged at the bottom of the drying chamber. The first hot air blower and the second hot air blower are respectively installed in the two mounting holes.

6. The preform drying apparatus according to claim 5, characterized in that: An exhaust fan is installed at the vent, a sealing ring is provided at the connection between the rotating shaft and the drying chamber, and a sealed door is provided on one side of the drying chamber.

7. The preform drying apparatus according to claim 1, characterized in that: The drying chamber has a circulating air duct on its inner wall, a circulating fan connected to the circulating air duct is installed at the top of the drying chamber, and an exhaust fan is installed at the exhaust port.

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