Bottle preform sterilization device

Abstract

The utility model discloses a bottle preform sterilizing device which comprises a conveying part and a sterilizing part, and further comprises a heating part, the conveying part comprises a first conveying assembly with a conveying path penetrating through the heating part and a second conveying assembly with a conveying path penetrating through the sterilizing part, the conveying path of the first conveying assembly and the conveying path of the second conveying assembly are connected front and back, and the heating components comprise the upper heating component and the lower heating component. According to the utility model, the heating component is arranged at the upstream of the sterilizing component, so that when the conveying component conveys the bottle blank, the inside and outside of the bottle blank are firstly heated by the heating component, and then gasified hydrogen peroxide is sprayed to the inner surface and the outer surface of the bottle blank by the sterilizing component; and when the bottle blank with the high temperature is continuously conveyed to the heating furnace to be heated, the gasified hydrogen peroxide on the surface of the bottle blank can rapidly reach the activation temperature so as to kill bacteria on the surface of the bottle blank, and the sterilization effect is better.

Description

Technical Field

[0001] The utility model belongs to the field of filling equipment, and in particular relates to a bottle blank sterilizing device. Background Art

[0002] Bottle blank sterilization technology is a key technology in aseptic filling equipment. When conveying the bottle blank, the bottle blank moves forward on an arc-shaped conveying path. A sterilization component is provided on the arc-shaped conveying path. A vaporized sterilization medium will be formed inside the sterilization component. The commonly used sterilization medium is hydrogen peroxide. After the bottle blank passes through the sterilization component, the vaporized hydrogen peroxide adheres to the surface of the bottle blank. Only when the bottle blank is further conveyed to the heating furnace and heated to a certain temperature, the vaporized hydrogen peroxide attached to the surface of the bottle blank will be heated and enter an activated state. The vaporized hydrogen peroxide in the activated state has the best sterilization ability to kill the bacteria on the surface of the bottle blank. That is, when the bottle blank passes through the heating furnace, there are two stages. The first stage is the heating stage of the bottle blank, in which the vaporized hydrogen peroxide has not yet been activated. The second stage is the sterilization stage of the bottle blank, at which time the vaporized hydrogen peroxide is activated to sterilize the bottle blank.

[0003] In the current prior art, the preform is at a relatively low temperature before passing through the sterilization component, and the preform at room temperature makes it very easy for the vaporized hydrogen peroxide attached to the surface of the preform to condense, and the temperature of the hydrogen peroxide attached to the surface of the preform at room temperature is far lower than the activation temperature. Therefore, when the preform passes through the heating furnace, it takes a long time to heat the vaporized hydrogen peroxide on the surface of the preform, that is, the heating stage of the preform takes too long. Since the preform travels at a high speed on the conveying path, the time it takes to pass through the heating furnace is relatively short. If the heating stage of the preform takes too long, the time occupied by the sterilization stage of the preform will be shortened, and the overall sterilization time of the preform is too short, and the preform cannot be sterilized thoroughly and comprehensively. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a bottle blank sterilizing device to solve the problem that the sterilization time of gasified hydrogen peroxide on the surface of the bottle blank is too short.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a bottle blank sterilization device, including a conveying component for conveying the bottle blank and a sterilization component for spraying gasified hydrogen peroxide inside and outside the bottle blank, and also including a heating component, the conveying component includes a first conveying component whose conveying path passes through the heating component and a second conveying component whose conveying path passes through the sterilization component, the conveying path of the first conveying component is connected front to back with the conveying path of the second conveying component, and the heating component includes an upper heating component for outputting sterile hot air to the inside of the bottle blank and a lower heating component for outputting sterile hot air to the outside of the bottle blank.

[0006] In the above-mentioned preform sterilizing device, the upper heating component includes an upper air bin having an upper heating cavity and an upper spray unit having a plurality of upper spray ports, and the upper spray unit is disposed on the upper air bin so that the upper spray ports are located in the upper heating cavity.

[0007] In the above-mentioned preform sterilizing device, the lower heating component includes a lower air bin having a lower heating chamber and a lower spray unit having a plurality of lower nozzles, and the lower spray unit is penetrated on the lower air bin so that the lower nozzles are located in the lower heating chamber.

[0008] In the above-mentioned preform sterilizing device, the upper nozzle is arranged vertically downward, the lower nozzle is arranged vertically upward, and the lower nozzle is staggered with the upper nozzle.

[0009] In the above-mentioned preform sterilizing device, the number of the lower nozzles is smaller than the number of the upper nozzles.

[0010] In the above-mentioned preform sterilizing device, the first conveying assembly includes a first conveying turntable, and the second conveying assembly includes a second conveying turntable. The conveying paths of the first conveying turntable and the second conveying turntable are both arc-shaped and connected front to back.

[0011] The beneficial effects of the utility model are:

[0012] A bottle blank sterilizing device includes a conveying component for conveying the bottle blank and a sterilizing component for spraying gasified hydrogen peroxide inside and outside the bottle blank, and also includes a heating component, the conveying component includes a first conveying component whose conveying path passes through the heating component and a second conveying component whose conveying path passes through the sterilizing component, the conveying path of the first conveying component is connected front and back with the conveying path of the second conveying component, and the heating component includes an upper heating component for outputting sterile hot air to the inside of the bottle blank and a lower heating component for outputting sterile hot air to the outside of the bottle blank. The technical solution has the following technical effects:

[0013] The utility model arranges a heating component on the conveying path of the conveying component, and arranges the heating component upstream of the sterilizing component, so that when the conveying component conveys the bottle blank, the bottle blank first passes through the heating component to heat the inside and outside of the bottle blank, and the upper heating component and the lower heating component uniformly heat the inside and outside of the bottle blank to a certain temperature, and then passes through the sterilizing component, and the vaporized hydrogen peroxide is sprayed onto the inner surface and the outer surface of the bottle blank by the sterilizing component. Because before the vaporized hydrogen peroxide is sprayed onto the bottle blank, the bottle blank has been uniformly heated to a higher temperature by the sterile hot air sprayed by the upper heating component and the lower heating component, so the vaporized hydrogen peroxide attached to the inner surface and the outer surface of the bottle blank is not easy to condense, and the vaporized hydrogen peroxide is prevented from condensing on the surface of the bottle blank and flowing As a result, only part of the surface of the preform is attached with the vaporized hydrogen peroxide for sterilization, thereby avoiding the phenomenon that the vaporized hydrogen peroxide sterilizes only part of the preform, and when the preform with a higher temperature is further transported to the heating furnace for heating, the vaporized hydrogen peroxide on the surface of the preform will quickly reach the activation temperature to enter the activation state and kill the bacteria on the surface of the preform, that is, after the hot preform preheated by the heating component enters the heating furnace later, it takes a shorter time to heat up to the activation temperature required for the vaporized hydrogen peroxide than the lower temperature preform that has not been preheated by the heating component, so that the vaporized hydrogen peroxide on the surface of the hot preform has a longer sterilization time during the transportation of the hot preform inside the heating furnace, and the sterilization effect on the preform is better.

[0014] The upper heating component includes an upper air bin with an upper heating chamber and an upper spray unit with a plurality of upper spray ports, and the upper spray unit is disposed on the upper air bin so that the upper spray ports are located in the upper heating chamber. By configuring the upper heating component as a structure combining the upper air bin and the upper spray unit, the upper spray ports can not only spray sterile hot air toward the inside of the preform to heat the inner surface of the preform, but also the sterile hot air overflowing from the top of the preform into the upper heating chamber can heat the outer surface of the top of the preform extending into the upper heating chamber, thereby achieving a good heating effect on the preform.

[0015] The lower heating component includes a lower air bin with a lower heating chamber and a lower injection unit with multiple lower nozzles. The lower injection unit is penetrated on the lower air bin so that the lower nozzles are located in the lower heating chamber. The sterile hot air sprayed from the lower nozzles fills the lower heating chamber, which can heat the outer surface of the bottle preform extending into the lower heating chamber, so that the whole bottle preform is heated more evenly.

[0016] The upper nozzle is vertically arranged downward, and the lower nozzle is vertically arranged upward, and the lower nozzle is staggered with the upper nozzle. By staggering the upper nozzle and the lower nozzle, it is avoided that the upper nozzle and the lower nozzle spray sterile hot air at the same position of the preform, causing the position to be overheated, deformed or damaged, so that the whole preform is heated more evenly, ensuring that the temperature of each position of the preform rises evenly and stably.

[0017] The number of lower nozzles is less than the number of upper nozzles. When the preform enters the heating furnace for heating, the outer surface of the preform is heated first, and then the heat is gradually transferred to the inner surface of the preform. Because the preform is thicker, the heating rate of the outer surface of the preform will be greater than the heating rate of the inner surface of the preform, that is, the inner surface of the preform heats up slowly, resulting in a longer time for the vaporized hydrogen peroxide on the inner surface of the preform to reach the activation temperature than the time for the vaporized hydrogen peroxide on the outer surface of the preform to reach the activation temperature, thereby resulting in a shorter sterilization time for the inner surface of the preform. By setting the number of upper nozzles to be greater than the number of lower nozzles, when the preform passes through the heating component, the heating effect of the heating component on the inner surface of the preform is better than the heating effect on the outer surface of the preform, that is, the temperature of the inner surface of the preform entering the heating furnace is slightly higher than the temperature of the outer surface of the preform, which can shorten the time for the inner surface of the preform to reach the activation temperature of the vaporized hydrogen peroxide, so that the vaporized hydrogen peroxide on the inner and outer surfaces of the preform in the heating furnace can be kept activated synchronously, ensuring that the vaporized hydrogen peroxide fully sterilizes the inner and outer surfaces of the preform.

[0018] The first conveying assembly includes a first conveying turntable, and the second conveying assembly includes a second conveying turntable. The conveying paths of the first conveying turntable and the second conveying turntable are both arc-shaped and connected front to back. When the preform is conveyed on the first conveying turntable, it can be preheated by the heating component, and when the preform is conveyed on the second conveying turntable, it can be sprayed with gasified hydrogen peroxide by the sterilizing component. The arrangement of the two conveying turntables makes the conveying path arc-shaped and connected front to back, prolonging the time for the preform to pass the heating component and the sterilizing component, making the preform preheating and gasified hydrogen peroxide spraying more uniform and sufficient, so as to facilitate subsequent sterilization.

[0019] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0021] Figure 1 It is a three-dimensional diagram of the preform sterilizing device in Example 1;

[0022] Figure 2 It is a top view of the preform sterilizing device in Example 1;

[0023] Figure 3 It is a cross-sectional schematic diagram of the bottle blank sterilization device in Example 1;

[0024] Figure 4 It is a schematic diagram of the assembly of the upper gas chamber and the upper injection unit in the first embodiment;

[0025] Figure 5 It is a schematic diagram of the assembly of the lower gas bin and the lower injection unit in the first embodiment.

[0026] Reference numerals:

[0027] 110, first conveying assembly; 111, first conveying turntable; 120, second conveying assembly; 121, second conveying turntable;

[0028] 200, heating component; 210, upper heating component; 211, upper air chamber; 2111, upper heating chamber; 212, upper injection unit; 2121, upper injection pipe; 2122, upper nozzle; 220, lower heating component; 221, lower air chamber; 2211, lower heating chamber; 222, lower injection unit; 2221, lower injection pipe; 2222, lower nozzle;

[0029] 300. Sterilized parts;

[0030] 400. Bottle blank. DETAILED DESCRIPTION

[0031] The utility model provides a bottle blank sterilizing device, comprising a conveying component for conveying the bottle blank and a sterilizing component for spraying gasified hydrogen peroxide inside and outside the bottle blank, and also comprising a heating component. The conveying component comprises a first conveying component whose conveying path passes through the heating component and a second conveying component whose conveying path passes through the sterilizing component. The conveying path of the first conveying component is connected with the conveying path of the second conveying component front to back. The heating component comprises an upper heating component for outputting sterile hot air to the inside of the bottle blank and a lower heating component for outputting sterile hot air to the outside of the bottle blank. The utility model arranges a heating component on the conveying path of the conveying component, and arranges the heating component upstream of the sterilizing component, so that when the conveying component conveys the bottle blank, the bottle blank first passes through the heating component to heat the inside and outside of the bottle blank, and the upper heating component and the lower heating component uniformly heat the inside and outside of the bottle blank to a certain temperature, and then passes through the sterilizing component, and the vaporized hydrogen peroxide is sprayed onto the inner surface and the outer surface of the bottle blank by the sterilizing component. Because before the vaporized hydrogen peroxide is sprayed onto the bottle blank, the bottle blank has been uniformly heated to a higher temperature by the sterile hot air sprayed by the upper heating component and the lower heating component, so the vaporized hydrogen peroxide attached to the inner surface and the outer surface of the bottle blank is not easy to condense, and the vaporized hydrogen peroxide is prevented from condensing on the surface of the bottle blank and flowing As a result, only part of the surface of the preform is attached with the vaporized hydrogen peroxide for sterilization, thereby avoiding the phenomenon that the vaporized hydrogen peroxide sterilizes only part of the preform, and when the preform with a higher temperature is further transported to the heating furnace for heating, the vaporized hydrogen peroxide on the surface of the preform will quickly reach the activation temperature to enter the activation state and kill the bacteria on the surface of the preform, that is, after the hot preform preheated by the heating component enters the heating furnace later, it takes a shorter time to heat up to the activation temperature required for the vaporized hydrogen peroxide than the lower temperature preform that has not been preheated by the heating component, so that the vaporized hydrogen peroxide on the surface of the hot preform has a longer sterilization time during the transportation of the hot preform inside the heating furnace, and the sterilization effect on the preform is better.

[0032] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] Embodiment 1:

[0038] A preform sterilizing device, such as Figures 1 to 5 As shown, the conveying component includes a conveying component, a sterilizing component 300 and a heating component 200. The conveying component is used to convey the preform 400, and includes a first conveying component 110 and a second conveying component 120. The conveying path of the first conveying component 110 passes through the heating component 200, and the conveying path of the second conveying component 120 passes through the sterilizing component 300, and the conveying path of the first conveying component 110 is connected with the conveying path of the second conveying component 120. The heating component 200 includes an upper heating component 210 and a lower heating component 220. The upper heating component 210 is used to output sterile hot air to the inner surface of the passing preform 400 to heat the inner surface of the preform 400, and the lower heating component 220 is used to output sterile hot air to the outer surface of the passing preform 400 to heat the outer surface of the preform 400, so that the inside and outside of the preform 400 are heated synchronously, so as to achieve the purpose of rapid and uniform temperature increase of the preform 400.

[0039] When the preform 400 is conveyed, the preform 400 is first conveyed by the first conveying assembly 110. During the process of conveying the preform 400 by the first conveying assembly 110, the conveying path of the preform 400 passes through the heating component 200. The heating component 200 synchronously preheats the inner surface and the outer surface of the passing preform 400 to heat the preform 400. Then, the preform 400 is transferred from the first conveying assembly 110 to the second conveying assembly 120 and then conveyed by the second conveying assembly 120. During the process of conveying the preform 400 by the second conveying assembly 120, the conveying path of the preform 400 passes through the sterilizing component 300. The sterilizing component 300 sprays gasified hydrogen peroxide on the inner surface and the outer surface of the passing preform 400 so that the gasified hydrogen peroxide is evenly attached to the surface of the preform 400.

[0040] The utility model arranges a heating component 200 on the conveying path of the conveying component, and arranges the heating component 200 upstream of the sterilizing component 300, so that when the conveying component conveys the preform 400, the preform 400 first passes through the heating component 200 to heat the inside and outside of the preform 400, and the preform 400 is heated to a certain temperature, and then passes through the sterilizing component 300, and the sterilizing component 300 sprays the vaporized hydrogen peroxide onto the inner surface and the outer surface of the preform 400. Because before the vaporized hydrogen peroxide is sprayed onto the preform 400, the preform 400 has been uniformly heated to a higher temperature by the sterile hot air sprayed by the upper heating component 210 and the lower heating component 220, the vaporized hydrogen peroxide attached to the inner surface and the outer surface of the preform 400 is not easy to condense, so as to avoid the vaporized hydrogen peroxide condensing on the surface of the preform 400 and Due to the flow, only part of the surface of the preform 400 is attached with the vaporized hydrogen peroxide for sterilization, thereby avoiding the phenomenon that the vaporized hydrogen peroxide sterilizes only part of the preform 400, and when the preform 400 with a higher temperature is further transported to the heating furnace for heating, the vaporized hydrogen peroxide on the surface of the preform 400 will quickly reach the activation temperature to enter the activation state to kill the bacteria on the surface of the preform 400, that is, after the hot preform 400 preheated by the heating component 200 enters the heating furnace later, it takes a shorter time to heat up to the activation temperature required for the vaporized hydrogen peroxide compared to the low-temperature preform 400 that has not been preheated by the heating component 200, so that the vaporized hydrogen peroxide on the surface of the hot preform 400 has a longer sterilization time during the transportation of the hot preform 400 inside the heating furnace, and the sterilization effect on the preform 400 is better.

[0041] The conveying paths of the first conveying assembly 110 and the second conveying assembly 120 in this embodiment can be straight or arc-shaped. Preferably, Figure 2 As shown, the first conveying assembly 110 includes a first conveying turntable 111, and the second conveying assembly 120 includes a second conveying turntable 121. The conveying paths of the first conveying turntable 111 and the second conveying turntable 121 are both arc-shaped and connected front to back. When the preform 400 is conveyed on the first conveying turntable, it can pass through the heating component 200 for preheating. When the preform 400 is conveyed on the second conveying turntable 121, it can pass through the sterilizing component 300 for spraying with gasified hydrogen peroxide. The arrangement of the two conveying turntables makes the conveying path arc-shaped and connected front to back, prolonging the time for the preform 400 to pass through the heating component 200 and the sterilizing component 300, so that the preheating of the preform 400 and the coverage of the gasified hydrogen peroxide on its surface are more uniform and sufficient, so as to facilitate subsequent sterilization.

[0042] like Figure 3 and Figure 4As shown, the upper heating component 210 is located above the first conveying turntable 111, and includes an upper air chamber 211 and an upper spray unit 212. The upper air chamber 211 has an upper heating chamber 2111 with a bottom opening. The upper spray unit 212 has an upper spray pipe 2121 and a plurality of upper spray ports 2122. The plurality of upper spray ports 2122 are located in the upper heating chamber 2111. The upper spray pipe 2121 is arranged on the upper air chamber 211. The upper spray pipe 2121 extends into the upper heating chamber 2111 and is connected to the plurality of upper spray ports 2122. 122 is connected, and the sterile hot air transmitted in the upper injection pipe 2121 is sprayed into the interior of the bottle blank 400 passing through the upper heating chamber 2111 through the upper nozzle 2122 to heat the inner surface of the bottle blank 400. The sterile hot air overflowing from the top of the bottle blank 400 to the upper heating chamber 2111 increases the overall temperature of the upper heating chamber 2111, and can also heat the outer side wall of the top of the bottle blank 400 located in the upper heating chamber 2111, thereby having a good heating effect on the bottle blank 400.

[0043] like Figure 3 and Figure 5 As shown, the lower heating component 220 is located below the first conveying turntable 111, and includes a lower air bin 221 and a lower spray unit 222. The lower air bin 221 has a lower heating chamber 2211 with a top opening. The lower spray unit 222 has a lower spray pipe 2221 and a plurality of lower nozzles 2222. The plurality of lower nozzles 2222 are located in the lower heating chamber 2211. The lower spray pipe 2221 is penetrated on the lower air bin 221. The lower spray pipe 2221 extends into the lower heating chamber 2211 and communicates with the plurality of lower nozzles 2222. The sterile hot air transmitted in the lower spray pipe 2221 The gas is sprayed into the lower heating chamber 2211 through the lower nozzle 2222 to increase the temperature in the lower heating chamber 2211, and then the outer surface of the bottle blank 400 in the lower heating chamber 2211 is heated by heat conduction. The upper and lower parts of the bottle blank 400 conveyed on the first conveying turntable 111 are respectively located in the upper heating chamber 2111 and the lower heating chamber 2211 for heating, so that the inner and outer surfaces of the bottle blank 400 are evenly heated, preventing the uneven heating of the bottle blank 400 from causing a low local temperature of the bottle blank 400 and causing the subsequent vaporized hydrogen peroxide to condense on the bottle blank 400.

[0044] In this embodiment, the upper nozzles 2122 are vertically arranged downward, and the upper nozzles 2122 are arranged one-to-one corresponding to the bottle blanks 400 located in the upper heating chamber 2111. When the bottle blanks 400 pass through the upper heating chamber 2111, each upper nozzle 2122 is aligned with the open top of a bottle blank 400, so that the sterile hot air blown out by the upper nozzles 2122 vertically enters the interior of the corresponding bottle blank 400 to heat the inner surface of the bottle blank 400. The lower nozzle 2222 is arranged vertically upward. Preferably, the upper nozzle 2122 and the lower nozzle 2222 are staggered. Not only are the lower nozzle 2222 and the upper nozzle 2122 staggered along the circumference of the first conveyor turntable 111, but the horizontal distance between the lower nozzle 2222 and the central axis of the first conveyor turntable 111 is also different from the horizontal distance between the upper nozzle 2122 and the central axis of the first conveyor turntable 111. This makes the overall heating of the preform 400 more uniform, avoids the upper nozzle 2122 and the lower nozzle 2222 spraying sterile hot air at the same position of the preform 400, causing overheating, deformation or damage at that position, and ensures that the temperature of each position of the preform 400 rises evenly and steadily.

[0045] Because when the bottle blank 400 with the vaporized hydrogen peroxide attached subsequently enters the heating furnace for heating, the outer surface of the bottle blank 400 is heated first, and then the heat is gradually transferred to the inner surface of the bottle blank 400, and the bottle blank 400 is thick, so the temperature rise rate of the outer surface of the bottle blank 400 will be greater than the temperature rise rate of the inner surface of the bottle blank 400, that is, the inner surface of the bottle blank 400 heats up slowly, resulting in that when the vaporized hydrogen peroxide on the outer surface of the bottle blank 400 reaches the activation temperature, the vaporized hydrogen peroxide on the inner surface of the bottle blank 400 has not yet reached the activation temperature, that is, the time for the vaporized hydrogen peroxide on the inner surface of the bottle blank 400 to reach the activation temperature is longer than the time for the vaporized hydrogen peroxide on the outer surface of the bottle blank 400 to reach the activation temperature, which leads to a shorter sterilization time of the inner surface of the bottle blank 400. In order to shorten the time for the inner surface of the bottle blank 400 to reach the activation temperature of the vaporized hydrogen peroxide, in this embodiment, the number of the upper nozzles 2122 is set to be greater than the number of the lower nozzles 2222, so that when the bottle blank 400 passes through the heating component 200, the heating effect of the heating component 200 on the inner surface of the bottle blank 400 is better than the heating effect on the outer surface of the bottle blank 400, that is, the temperature of the inner surface of the bottle blank 400 that is about to enter the heating furnace is slightly higher than the temperature of the outer surface, so that the vaporized hydrogen peroxide on the inner surface of the bottle blank 400 in the heating furnace can be activated synchronously with the vaporized hydrogen peroxide on the outer surface, ensuring that the vaporized hydrogen peroxide fully sterilizes the inner and outer surfaces of the bottle blank 400.

[0046] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A preform sterilizing device, comprising a conveying component for conveying the preform and a sterilizing component for spraying gasified hydrogen peroxide inside and outside the preform, characterized in that: It also includes a heating component, the conveying component includes a first conveying component whose conveying path passes through the heating component and a second conveying component whose conveying path passes through the sterilization component, the conveying path of the first conveying component is connected front to back with the conveying path of the second conveying component, and the heating component includes an upper heating component for outputting sterile hot air to the inside of the bottle blank and a lower heating component for outputting sterile hot air to the outside of the bottle blank.

2. A preform sterilizing device according to claim 1, characterized in that: The upper heating component comprises an upper air bin having an upper heating cavity and an upper spray unit having a plurality of upper spray ports, wherein the upper spray unit is disposed on the upper air bin so that the upper spray ports are located in the upper heating cavity.

3. A preform sterilizing device according to claim 2, characterized in that: The lower heating component comprises a lower air bin having a lower heating chamber and a lower spray unit having a plurality of lower spray ports, wherein the lower spray unit is disposed on the lower air bin so that the lower spray ports are located in the lower heating chamber.

4. A preform sterilizing device according to claim 3, characterized in that: The upper nozzle is vertically arranged downward, the lower nozzle is vertically arranged upward, and the lower nozzle is staggered with the upper nozzle.

5. A preform sterilizing device according to claim 3, characterized in that: The number of the lower nozzles is smaller than the number of the upper nozzles.

6. A preform sterilizing device according to claim 1, characterized in that: The first conveying assembly includes a first conveying turntable, and the second conveying assembly includes a second conveying turntable. The conveying paths of the first conveying turntable and the second conveying turntable are both arc-shaped and connected front to back.

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