Bottle preform sterile air circulation structure
By designing a sterile air circulation structure in the bottle embryo heating device and using filter components and fans to treat the supply and cold air, the pollution problem during the heating process of the bottle embryo is solved, ensuring a sterile environment and improving production efficiency.
Patent Information
- Application Number
- CN202420149230.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-22
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-22
AI Technical Summary
The existing bottle embryo heating device cannot ensure the sterile environment of the bottle embryo during the heating process, resulting in pollution and reducing the UV sterilization efficiency.
A sterile air circulation structure is designed, including the ultraviolet light box and infrared light box in the hood, equipped with filter components and fan, which can handle the air supply of the embryo body, the embryo mouth cold air and the UV light box by filtering to ensure the cleanliness of the airflow. Use the exhaust gas emission channels to centrally discharge waste gas to avoid bottle preform pollution.
It realizes the maintenance of sterile environment during the bottle preform heating process, reducing costs and improving production efficiency.
Smart Images
Figure CN222195538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bottle embryo heating device, in particular to an aseptic air flow structure of the bottle embryo heating device. Background Art
[0002] In the packaging field, a large number of plastic bottles are usually needed for filling. The bottle blowing process has become the main production method of plastic bottles because of its simple process and low cost. In the plastic bottle blowing production line, the preform needs to be heated in a preform heating box. When the preform reaches a certain temperature, the bottle is blown into a plastic bottle by a bottle blowing machine.
[0003] In the existing heating machines, the sterilization of preforms is relatively simple. The preforms first pass through a light box with infrared heating and then a light box with ultraviolet sterilization. At the same time, air is supplied at the bottom of each light box to dissipate heat and cool the body and mouth of the preforms. However, the air supplied to the preforms is not filtered, which makes it impossible to ensure a sterile environment for the preforms, resulting in contamination of the preforms during the heating process, which will inevitably reduce the efficiency of ultraviolet sterilization. Utility Model Content
[0004] The utility model provides a bottle preform aseptic air circulation structure which has a simple structure and can ensure that the bottle preform is not contaminated during the heating process.
[0005] The sterile air circulation structure for bottle embryos of the utility model comprises a machine cover, wherein an ultraviolet lamp box and a plurality of infrared lamp boxes are arranged in the machine cover, an embryo body air supply channel and an embryo mouth air supply channel located below the embryo body air supply channel and passing through the middle of the embryo body air supply channel are arranged below the infrared lamp box, a first filter component, a heat exchanger and a fan are arranged at the inlet of the embryo mouth air supply channel from the outside to the inside in sequence, and the outlet of the embryo mouth air supply channel is opposite to the embryo mouth; a fan and a second filter component are installed at the inlet of the embryo body air supply channel, and the outlet of the embryo body air supply channel is opposite to the embryo body; cooling air inlet channels for cooling the ultraviolet lamp tube are arranged on both sides of the bottom of the ultraviolet lamp box, and a third filter is installed at the inlet of the air inlet channel; and also comprises an exhaust gas discharge channel which is communicated with the outlet of the embryo mouth air supply channel, the outlet of the embryo body air supply channel and the cooling air inlet channel and is used to discharge exhaust gas.
[0006] In the sterile air circulation structure for the preform, the air sent to the preform body passes through the second filter component from the outside of the hood, and is transported under the pressure of the fan to form sterile air. The sterile air is transported to the infrared light box through the preform body air supply channel to cool the preform body and cover it with positive pressure, while the air sent to the preform mouth passes through the first filter component, the heat exchanger and the fan to form sterile cold air. The sterile cold air is transported to the preform mouth through the preform mouth air supply channel to cool and cover the preform mouth with positive pressure. The air entering the ultraviolet light box passes through the third filter through the cooling air inlet channel to cool the ultraviolet lamp tube, and the air passing through the preform body air supply channel, the preform mouth air supply channel and the cooling air inlet channel is discharged through the exhaust gas discharge channel. The utility model has a simple structure, and the air supply of the preform body, the cold air of the preform mouth and the air of the ultraviolet light box are filtered to meet the cleanliness requirements. At the same time, the exhaust gas discharge channel is used to collect the exhaust gas generated in each area and discharge it to the outside. During the heating of the preform, the contamination of the preform is avoided, the cost is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 The figure is a schematic diagram of the overall structure of a preform heating machine.
[0008] Figure 2 This is a schematic diagram of the embryo mouth air supply channel structure.
[0009] Figure 3 This is a horizontal schematic diagram of a preform heating machine.
[0010] Figure 4 This is a schematic diagram of the structure of the infrared light box chassis.
[0011] Figure 5 It is a schematic diagram of the partial structure of the UV lamp box chassis. DETAILED DESCRIPTION
[0012] like Figure 1-5As shown, a sterile air circulation structure for bottle embryos comprises a machine cover 1, in which an ultraviolet lamp box 2 and a plurality of infrared lamp boxes 3 are arranged, an embryo body air supply channel 4 and an embryo mouth air supply channel 5 located below the embryo body air supply channel and passing through the middle of the embryo body air supply channel are arranged below the infrared lamp box, a first filter component 6, a heat exchanger 7 and a fan 8 are arranged at the inlet of the embryo mouth air supply channel from the outside to the inside, and the outlet of the embryo mouth air supply channel is opposite to the embryo mouth; a fan and a second filter component 9 are installed at the inlet of the embryo body air supply channel, and the outlet of the embryo body air supply channel is opposite to the embryo body; cooling air inlet channels 10 for cooling the ultraviolet lamp tube are arranged on both sides of the bottom of the ultraviolet lamp box, and a third filter 11 is installed at the inlet of the air inlet channel; and also includes an exhaust gas discharge channel 12 which is communicated with the outlet of the embryo mouth air supply channel, the outlet of the embryo body air supply channel and the cooling air inlet channel and is used to discharge exhaust gas. The wind sent to the embryo body passes through the second filter component from the outside of the hood, and is transported under the pressure of the fan to form sterile wind. The sterile wind is transported to the infrared light box through the embryo body air supply channel to cool the embryo body and cover it with positive pressure. The wind sent to the embryo mouth passes through the first filter component, the heat exchanger and the fan to form sterile cold wind. The sterile cold wind is transported to the embryo mouth through the embryo mouth air supply channel to cool the embryo mouth and cover it with positive pressure. The wind entering the ultraviolet light box passes through the third filter through the cooling air inlet channel to cool the ultraviolet lamp tube. The wind passing through the embryo body air supply channel, the embryo mouth air supply channel and the cooling air inlet channel is discharged through the exhaust gas discharge channel. The utility model has a simple structure, and the air of the bottle body, the bottle mouth cold air and the ultraviolet light box is filtered to meet the cleanliness requirements. At the same time, the exhaust gas discharge channel is used to collect the exhaust gas generated in each area and discharge it to the outside. During the heating of the bottle embryo, the bottle embryo is prevented from being contaminated, the cost is reduced, and the production efficiency is improved.
[0013] It also includes an exhaust hood 13 which is covered on the top of the machine cover and is used to collect and discharge the exhaust gas discharged through the exhaust gas discharge channel. An outlet is arranged on the top of the exhaust hood, and an axial flow fan 14 which accelerates the discharge speed is installed at the outlet.
[0014] A plurality of rows of small air intake holes 18 are provided on the left and right sides of the exhaust hood, and a differential pressure gauge for detecting the pressure difference between the inside and outside of the exhaust hood is installed on the exhaust hood. The exhaust hood exhausts the exhaust gas sent from various areas to the outside through the axial flow fan. When the exhaust volume of the axial flow fan is greater than the total amount of exhaust gas, the internal and external pressure difference is detected by the differential pressure gauge. In order to prevent excessive extraction of internal wind of the chassis, a plurality of rows of small air intake holes are provided on the left and right sides of the exhaust hood. When the exhaust volume is insufficient, the small air intake holes are used to supplement the required amount. The frequency of the axial flow fan is controlled by the differential pressure gauge to stabilize to a pressure difference range.
[0015] The preform needs to pass through the ultraviolet light box and the infrared light box in sequence through the cooperation of the driving wheel, the driven wheel and the chain transmission mechanism, and the passive star wheel area composed of the driving wheel and the driven wheel also needs to be introduced with sterile air to ensure a sterile environment. It also includes a passive star wheel chassis 15 for conveying the preform. A fan filter group 16 is installed on the top of the passive star wheel chassis. The external air is filtered by the fan filter group and sent to the inside of the passive star wheel chassis, so that the passive star wheel area is covered with sterile air.
[0016] The first filter assembly includes a primary filter, a medium filter and a high efficiency filter with increasing filtering effects. The primary filter and the medium filter are placed in front of the fan in sequence, and the high efficiency filter is installed behind the fan in the air supply direction, so that the wind passing through the high efficiency filter is sterile air.
[0017] The second filter assembly includes a primary filter, a medium filter and a high efficiency filter with increasing filtering effects. The primary filter and the medium filter are placed in front of the fan in sequence, and the high efficiency filter is installed behind the fan in the air supply direction, so that the wind passing through the high efficiency filter is sterile air.
[0018] A temperature detector 17 is also installed on the upper part of the ultraviolet lamp box. The temperature required by the ultraviolet lamp box is obtained through the temperature detector and the frequency conversion control of the fan to ensure the required temperature of the ultraviolet lamp tube.
[0019] It also includes a differential pressure gauge installed near the first filter assembly, the second filter assembly and the third filter for detecting the pressure difference value. The filter blockage degree is determined by monitoring the differential pressure gauge, thereby facilitating cleaning or replacement.
Claims
1. A sterile air circulation structure for preforms, comprising a housing (1), wherein an ultraviolet light box (2) and a plurality of infrared light boxes (3) are arranged in the housing, characterized in that: An embryo body air supply channel (4) and an embryo mouth air supply channel (5) located below the embryo body air supply channel and passing through the middle of the embryo body air supply channel are arranged below the infrared light box. A first filter component (6), a heat exchanger (7) and a fan (8) are arranged at the inlet of the embryo mouth air supply channel in order from the outside to the inside, and the outlet of the embryo mouth air supply channel is opposite to the embryo mouth; a fan and a second filter component (9) are installed at the inlet of the embryo body air supply channel, and the outlet of the embryo body air supply channel is opposite to the embryo body; cooling air inlet channels (10) for cooling the ultraviolet lamp are arranged on both sides of the bottom of the ultraviolet light box, and a third filter (11) is installed at the inlet of the air inlet channel; and an exhaust gas discharge channel (12) is also included, which is connected to the outlet of the embryo mouth air supply channel, the outlet of the embryo body air supply channel and the cooling air inlet channel and is used to discharge exhaust gas.
2. The aseptic air circulation structure for preforms according to claim 1, characterized in that: It also includes an exhaust hood (13) which is covered on the top of the machine hood and is used to collect and discharge the exhaust gas discharged through the exhaust gas discharge channel. An outlet is arranged on the top of the exhaust hood, and an axial flow fan (14) is installed at the outlet to accelerate the discharge speed.
3. The aseptic air circulation structure for preforms according to claim 2, characterized in that: A plurality of rows of small air inlet holes (18) are provided on the left and right sides of the exhaust hood, and a differential pressure gauge for detecting the differential pressure between the inside and outside of the exhaust hood is installed on the exhaust hood.
4. The aseptic air circulation structure for preforms according to claim 1, characterized in that: It also includes a passive star wheel box (15) for conveying bottle preforms, and a fan filter group (16) is installed on the top of the passive star wheel box.
5. The aseptic air circulation structure for preforms according to claim 1, characterized in that: The first filter assembly includes a primary filter, a medium filter and a high efficiency filter with increasing filtering effects. The primary filter and the medium filter are placed in front of the fan in sequence, and the high efficiency filter is installed behind the fan in the air supply direction.
6. The aseptic air circulation structure for preforms according to claim 1, characterized in that: The second filter assembly includes a primary filter, a medium filter and a high efficiency filter with increasing filtering effects. The primary filter and the medium filter are placed in front of the fan in sequence, and the high efficiency filter is installed behind the fan in the air supply direction.
7. The aseptic air circulation structure for preforms according to claim 1, characterized in that: A temperature detector (17) is also installed on the upper part of the ultraviolet lamp box.
8. The aseptic air circulation structure for preforms according to claim 1, characterized in that: Also included is a differential pressure gauge installed near the first filter assembly, the second filter assembly and the third filter for detecting the differential pressure value.