A high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles

Abstract

This utility model relates to the field of pharmaceutical machinery technology, specifically a high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles. It solves the problems mentioned in the background art. The equipment includes a preheating zone, a high-temperature sterilization zone, and a cooling zone. Each zone is equipped with a housing, a heating device, a blower, a high-efficiency air filter, and a static pressure chamber. A turbulence-inducing device is installed within the static pressure chamber of the preheating zone and / or the high-temperature sterilization zone. This turbulence-inducing device includes a rotating shaft driven by a drive mechanism and several asymmetrically shaped turbulence-inducing components mounted on the shaft. By installing a turbulence-inducing device composed of asymmetrically shaped turbulence-inducing components within the static pressure chamber of the preheating zone and / or the high-temperature sterilization zone, and driving it to rotate, this utility model can periodically and slightly turbulent the laminar airflow, effectively eliminating dead zones in the airflow and making the hot air distribution more dynamically uniform. This improves the consistency of sterilization and drying effects on pharmaceutical PE bottles, while also increasing heat exchange efficiency and reducing equipment energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical machinery technology, specifically to a high-efficiency hot air sterilization and drying device for pharmaceutical PE bottles. Background Technology

[0002] In the pharmaceutical, health product, and medical device industries, polyethylene (PE) bottles are widely used for packaging various liquid preparations such as oral solutions, eye drops, and rinsing solutions due to their excellent chemical stability, impact resistance, and cost advantages. To ensure drug quality and medication safety, these PE bottles must undergo rigorous cleaning, sterilization, and drying processes before filling to thoroughly remove microbial contamination and residual water droplets from the cleaning process.

[0003] Currently, the industry commonly uses hot air sterilization and drying equipment to process washed PE bottles. This type of equipment typically has a tunnel-like structure, with a preheating zone, a high-temperature sterilization zone, and a cooling zone sequentially arranged along the conveying direction. It utilizes high-temperature clean air purified by high-efficiency filters to sterilize and dry the bottles. However, existing equipment often uses statically distributed perforated plates or slotted airflow. While this can create laminar flow, it still has significant drawbacks in actual operation: First, the static airflow field inevitably creates dead zones at the edges of the conveyor belt, gaps between bottles, and the bottom of the bottles, resulting in insufficient airflow in some areas. This can easily lead to incomplete drying or uneven sterilization of individual bottles, posing a quality risk. Second, to compensate for these shortcomings, the equipment usually needs to increase the overall heating power and fan frequency, which not only results in significant energy waste but also increases operating costs. Third, PE material has limited heat resistance, and uneven airflow distribution can lead to localized overheating, causing bottle shrinkage, deformation, or odor, affecting product qualification rates.

[0004] Therefore, developing a high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles that can effectively improve the uniformity of airflow distribution, ensure consistent sterilization and drying effects, and take into account energy efficiency has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To solve the above problems, this utility model provides the following technical solution: a high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles, comprising a preheating zone, a high-temperature sterilization zone, and a cooling zone arranged sequentially along the material conveying direction. Each zone is equipped with a housing, a heating device, a blower, a high-efficiency air filter, and a static pressure box located below the high-efficiency air filter. A turbulence-inducing device is provided in the static pressure box of the preheating zone and / or the high-temperature sterilization zone. The turbulence-inducing device includes a rotating shaft driven by a driving mechanism and several asymmetrically shaped turbulence-inducing components installed on the rotating shaft.

[0006] Preferably, the cross-section of the spoiler is arc-shaped or airfoil-shaped.

[0007] Preferably, the drive mechanism is a stepper motor or a servo motor with adjustable speed.

[0008] Preferably, the turbulence-inducing device is simultaneously installed in the static pressure chamber of both the preheating zone and the high-temperature sterilization zone.

[0009] Preferably, the rotating shaft extends laterally through the static pressure box, and the turbulence-disrupting components are evenly distributed along the length of the rotating shaft.

[0010] Preferably, the device further includes a central controller and a temperature sensor disposed within the housing, the drive mechanism being connected to the central controller, and the central controller being configured to adjust the rotational speed of the drive mechanism based on feedback signals from the temperature sensor.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a turbulence device composed of asymmetrical turbulence components in the static pressure chamber of the preheating zone and / or high-temperature sterilization zone, and driving it to rotate, the laminar airflow can be periodically and slightly disturbed, effectively eliminating dead airflow angles and making the hot air distribution more dynamic and uniform, thereby improving the consistency of sterilization and drying effects of pharmaceutical PE bottles, while improving heat exchange efficiency and reducing equipment energy consumption. In addition, by adjusting the speed of the drive mechanism according to the feedback signal of the temperature sensor through the central controller, the process adaptability is further optimized, and efficient, stable and energy-saving operation is achieved. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an enlarged structural diagram of the internal structure of the box of this utility model.

[0015] In the diagram: 1. Preheating zone; 2. High-temperature sterilization zone; 3. Cooling zone; 4. Chamber; 5. Heating device; 6. Air supply fan; 7. High-efficiency air filter; 8. Static pressure chamber; 9. Baffle device; 91. Rotating shaft; 92. Baffle component; 10. Drive mechanism; 11. Temperature sensor; 12. Central controller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] like Figure 1 As shown, the high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles in this embodiment includes a preheating zone 1, a high-temperature sterilization zone 2, and a cooling zone 3 arranged sequentially along the material conveying direction. The three functional zones together form a sealed tunnel-type box structure, with a horizontal stainless steel conveyor belt running through the interior to carry and convey the PE bottles to be processed. Each zone is equipped with a box 4, a heating device 5, a blower 6, a high-efficiency air filter 7, and a static pressure box 8 located below the high-efficiency air filter 7. The static pressure box 8 is a sealed cavity with an open bottom, and its function is to re-pressurize the filtered clean air to form a stable and uniform vertical laminar flow, which blows downwards onto the PE bottles on the conveyor belt. A turbulence device 9 is provided in the static pressure box 8 of the preheating zone 1 and / or the high-temperature sterilization zone 2. The turbulence device 9 includes a rotating shaft 91 driven by a drive mechanism 10 and several asymmetrical turbulence components 92 installed on the rotating shaft 91. The heating device 5 is located in the air duct below the blower 6. In this embodiment, a stainless steel electric heating tube array is used, and its power is adjustable. It is used to heat the airflow to the required temperature. The preheating zone is about 100-150°C, the high-temperature sterilization zone is about 250-350°C, and the cooling zone is not in operation.

[0018] The cross-section of the spoiler 92 is arc-shaped or airfoil-shaped.

[0019] The drive mechanism 10 is a stepper motor or servo motor with adjustable speed.

[0020] The turbulence device 9 is installed in the static pressure chamber 8 of both the preheating zone 1 and the high-temperature sterilization zone 2.

[0021] The rotating shaft 91 extends laterally through the static pressure box 8, and the turbulence-disrupting components 92 are evenly distributed along the length of the rotating shaft 91.

[0022] The device further includes a central controller 12 and a temperature sensor 11 located inside the housing 4. The drive mechanism 10 is connected to the central controller 12, which is configured to adjust the rotational speed of the drive mechanism 10 based on the feedback signal from the temperature sensor 11.

[0023] The working principle of this utility model is as follows: When the equipment is running, the blower 6 delivers air heated by the heating device 5 through the high-efficiency air filter 7 into the static pressure box 8 to form clean hot air; the drive mechanism 10 drives the asymmetrical turbulence component 92 on the rotating shaft 91 to rotate slowly, periodically disturbing the airflow in the static pressure box 8 and breaking the fixed airflow distribution state; the disturbed hot air is blown towards the PE bottles in the conveying process in a more uniform dynamic manner, effectively eliminating dead airflow angles and ensuring that all surfaces of the bottles are in full contact with the hot air, thereby achieving efficient evaporation of moisture and uniform heat sterilization; the central controller 12 adjusts the speed of the drive mechanism 10 in real time according to the temperature signal inside the box 4 monitored by the temperature sensor 11, so that the intensity of airflow disturbance matches the process temperature requirements, ultimately achieving the purpose of improving the uniformity of drying and sterilization and energy utilization efficiency.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A high-efficiency hot air sterilization and drying device for pharmaceutical PE bottles, comprising a preheating zone (1), a high-temperature sterilization zone (2), and a cooling zone (3) arranged sequentially along the material conveying direction, each zone being equipped with a housing (4), a heating device (5), a blower (6), a high-efficiency air filter (7), and a static pressure chamber (8) located below the high-efficiency air filter (7), characterized in that, A flow disturbance device (9) is provided in the static pressure chamber (8) of the preheating zone (1) and / or the high temperature sterilization zone (2). The flow disturbance device (9) includes a rotating shaft (91) driven by a driving mechanism (10) and several asymmetrical flow disturbance components (92) installed on the rotating shaft (91).

2. The high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles according to claim 1, characterized in that: The cross-section of the spoiler (92) is arc-shaped or airfoil-shaped.

3. The high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles according to claim 1, characterized in that: The drive mechanism (10) is a stepper motor or servo motor with adjustable speed.

4. The high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles according to claim 1, characterized in that: The turbulence device (9) is simultaneously installed in the static pressure chamber (8) of both the preheating zone (1) and the high-temperature sterilization zone (2).

5. The high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles according to claim 1, characterized in that: The rotating shaft (91) extends laterally through the static pressure box (8), and the turbulence-disrupting components (92) are evenly distributed along the length of the rotating shaft (91).

6. The high-efficiency hot air sterilization and drying equipment for pharmaceutical PE bottles according to claim 1, characterized in that: The device further includes a central controller (12) and a temperature sensor (11) disposed in the housing (4). The drive mechanism (10) is connected to the central controller (12), which is configured to adjust the rotational speed of the drive mechanism (10) according to the feedback signal of the temperature sensor (11).

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