CN112451708A

CN112451708A - Bottle cap sterilization method

Info

Publication number: CN112451708A
Application number: CN202011190309.3A
Authority: CN
Inventors: 李前勇; 陆健锋; 施晨珏
Original assignee: Jiangsu Newamstar Packagin Machinery Co Ltd
Current assignee: Jiangsu Newamstar Packagin Machinery Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-03-09

Abstract

The invention discloses a bottle cap sterilization method, which comprises the following steps: (1) electrostatic dust removal is carried out on the surface of the bottle cap; (2) spraying vaporous hydrogen peroxide with sterilization temperature to the bottle cap to enable the hydrogen peroxide to be uniformly attached to the surface of the bottle cap, and sterilizing the bottle cap; (3) the bottle cap is blown by sterile hot air to activate and decompose the residual condensed hydrogen peroxide on the surface of the bottle cap. The invention relates to a bottle cap sterilization method, which comprises the steps of performing electrostatic precipitation on a bottle cap, spraying vaporous hydrogen peroxide with sterilization temperature to the bottle cap, and finally blowing the bottle cap through sterile hot air. The bottle cap sterilization device has the advantages that efficient sterilization of the bottle cap can be realized, the consumption of sterilization liquid is low, no dead angle exists in sterilization, no residue exists in the sterilization liquid, and meanwhile, the use of sterile water is avoided.

Description

Bottle cap sterilization method

Technical Field

The invention relates to a bottle cap sterilization method.

Background

In the beverage industry and the medical industry, as long as the bottle cap is used, the necessary sterilization of the bottle cap can not be avoided, and particularly the HDPE bottle cap for PET bottles.

In the prior art, the bottle caps are sterilized by spraying a hydrogen peroxide solution. The sterilization method not only needs to consume more sterilization liquid, but also easily remains on the bottle cap to influence the sterilization effect.

Disclosure of Invention

The invention aims to provide a bottle cap sterilization method which can realize efficient sterilization of a bottle cap, has less sterilization liquid consumption, no sterilization dead angle and no sterilization liquid residue, and avoids the use of sterile water.

In order to achieve the purpose, the invention adopts the technical scheme that:

a bottle cap sterilization method comprises the following steps:

(1) electrostatic dust removal is carried out on the surface of the bottle cap;

(2) spraying vaporous hydrogen peroxide with sterilization temperature to the bottle cap to enable the hydrogen peroxide to be uniformly attached to the surface of the bottle cap, and sterilizing the bottle cap;

(3) and blowing the bottle cap by sterile hot air to activate and decompose the residual condensed hydrogen peroxide on the surface of the bottle cap.

Preferably, the bottle caps are preheated by purging the bottle caps with sterile hot air prior to step (2).

Preferably, after the bottle cap is transported for a certain distance after the step (2), the bottle cap is blown by sterile hot air, so that the bottle cap is further sterilized by contact during the transportation process through gradually condensing hydrogen peroxide attached to the surface of the bottle cap.

Preferably, in step (2), the hydrogen peroxide mother liquor is metered by a liquid flow meter, the sterile low-pressure gas is metered by a gas flow meter, the hydrogen peroxide mother liquor and the sterile low-pressure gas are mixed proportionally, and the mixture is heated to obtain the vaporous hydrogen peroxide with the sterilization temperature.

Preferably, in the step (2), the temperature of the vaporous hydrogen peroxide is detected by the first temperature sensor, and the vaporous hydrogen peroxide with the temperature reaching the sterilization temperature is sprayed to the bottle cap.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the invention relates to a bottle cap sterilization method, which comprises the steps of performing electrostatic precipitation on a bottle cap, spraying vaporous hydrogen peroxide with sterilization temperature to the bottle cap, and finally blowing the bottle cap through sterile hot air. The bottle cap sterilization device has the advantages that efficient sterilization of the bottle cap can be realized, the consumption of sterilization liquid is low, no dead angle exists in sterilization, no residue exists in the sterilization liquid, and meanwhile, the use of sterile water is avoided.

Drawings

FIG. 1 is a schematic diagram of the apparatus for carrying out the method of the present invention.

Wherein: 1. the bottle cap is provided with an inlet; 2. an electrostatic dust removal unit; 3. a preheating unit; 4. a sterilization unit; 5. a first holding unit; 6. a second holding unit; 7. a decomposition unit; 8. and (4) an outlet of the sterile bottle cap.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

Referring to fig. 1, the bottle cap sterilization device sequentially comprises a bottle cap inlet 1, an electrostatic dust removal unit 2, a preheating unit 3, a sterilization unit 4, a first holding unit 5, a second holding unit 6, a decomposition unit 7 and a sterile bottle cap outlet 8 along the conveying direction of bottle caps.

When the bottle cap sterilization device is used for sterilizing the bottle cap, the method comprises the following steps:

(1) when the bottle cap enters the electrostatic dust removal unit 2 from the bottle cap inlet 1, the electrostatic dust removal unit 2 is used for carrying out electrostatic dust removal on the surface of the bottle cap; specifically, the bottle cap and the conveying space thereof are dedusted, a certain amount of micro organisms can be removed, the bottle cap is purified to a certain degree, and the subsequent bottle cap sterilization is facilitated; the removal of fine particles also helps the hydrogen peroxide to adhere evenly to the surface of the bottle cap.

(2) After electrostatic dust collection is finished, the bottle cap enters the preheating unit 3 from the electrostatic dust collection unit 2, and is preheated by blowing the bottle cap with sterile hot air; specifically, the bottle cap is preheated to the temperature T1 through sterile hot air, and the preheating time is T1; through the step, the problem that when the bottle cap enters the sterilization unit 4, the vaporous hydrogen peroxide is in contact with the bottle cap and is rapidly condensed and accumulated can be avoided;

the temperature of the sterile hot air is detected through the second temperature sensor, and when the temperature of the sterile hot air is detected to reach T1, the bottle cap is blown.

(3) After the preheating is finished, the bottle cap enters the sterilization unit 4 from the preheating unit 3, and the vaporous hydrogen peroxide with sterilization temperature is sprayed to the bottle cap, so that the hydrogen peroxide is uniformly attached to the surface of the bottle cap to sterilize the bottle cap; specifically, the vaporous hydrogen peroxide is sprayed on the surface of the bottle cap, so that the vaporous hydrogen peroxide is in full contact with the bottle cap without dead angles, and the bottle cap is sterilized for t 2;

metering the hydrogen peroxide mother liquor through a liquid flow meter, metering the sterile low-pressure gas through a gas flow meter, mixing the hydrogen peroxide mother liquor and the sterile low-pressure gas in proportion, and heating the mixture to obtain vaporous hydrogen peroxide with a sterilization temperature; in this embodiment, the concentration of the hydrogen peroxide mother liquor is 30-40%, the hydrogen peroxide mother liquor and the sterile low-pressure gas are fully mixed in a gas-liquid mixing device, and are heated by an evaporator to obtain vaporous hydrogen peroxide;

the temperature of the vaporous hydrogen peroxide is detected by the first temperature sensor, and when the temperature of the vaporous hydrogen peroxide is detected to reach the sterilization temperature (T2), the vaporous hydrogen peroxide is sprayed to the bottle cap.

(4) After the spraying of the vaporous hydrogen peroxide is finished, the bottle caps sequentially enter the first holding unit 5 and the second holding unit 6 from the sterilization unit 4, so that the bottle caps are further sterilized by contact through gradually condensing the hydrogen peroxide attached to the surfaces of the bottle caps in the transmission process; the sterilization retention time was t 3.

(5) Then the bottle cap enters a decomposition unit 7, and the bottle cap is blown by sterile hot air to activate and decompose the residual condensed hydrogen peroxide on the surface of the bottle cap;

detecting the temperature of the sterile hot air through a third temperature sensor, and purging the bottle cap when the temperature of the sterile hot air reaches T3;

this decomposition unit 7 has a dual function:

a. carrying out thermal decomposition on the residual condensed hydrogen peroxide on the bottle cap, and playing a role in thermal activation and further sterilization;

b. the sterile hot air is applied for a time t4 to allow a portion of the condensed hydrogen peroxide to be gradually decomposed and removed.

The method mainly aims at sterilizing the HDPE bottle cap, and can effectively kill microorganisms or bacteria existing in the bottle cap to prevent the microorganisms from growing in the bottle cap, so that the potential risk that the microorganisms are transferred to the downstream of the bottle cap in the use process is eliminated.

The method has the advantages that:

(1) the method completely breaks through the limitation of the traditional sterilization process, and does not need to add additional sterile water in the whole sterilization process, thereby reducing the related cost;

(2) hydrogen peroxide (H) for use in the process of the invention₂O₂) The bactericide is known to have bactericidal performance, is widely applied particularly in the field of food processing, and has high-efficiency bactericidal effect;

(3) the sterilization process adopted by the method is simple and efficient, completely avoids the problem of subsequent sewage treatment, and is low in cost and more environment-friendly;

(4) the sterilization process adopted by the method not only enhances the sterilization effect, but also removes the residue on the surface of the bottle cap, and eliminates the influence on the taste of the product and the body of a drinker.

The above-mentioned embodiments are merely illustrative of the technical idea and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the scope of the present invention.

Claims

1. A bottle cap sterilization method is characterized in that: the method comprises the following steps:

(1) electrostatic dust removal is carried out on the surface of the bottle cap;

2. The bottle cap sterilization method according to claim 1, wherein: and (3) before the step (2), the bottle cap is preheated by blowing sterile hot air on the bottle cap.

3. The bottle cap sterilization method according to claim 1, wherein: after the step (2), after the bottle cap is conveyed for a certain distance, the bottle cap is blown by sterile hot air, so that the bottle cap is further sterilized by contact through gradually condensing hydrogen peroxide attached to the surface of the bottle cap during the conveying process.

4. The bottle cap sterilization method according to claim 1, wherein: in the step (2), metering hydrogen peroxide mother liquor through a liquid flow meter, metering sterile low-pressure gas through a gas flow meter, mixing the hydrogen peroxide mother liquor and the sterile low-pressure gas in proportion, and heating the mixture to obtain the vaporous hydrogen peroxide with the sterilization temperature.

5. The bottle cap sterilization method according to claim 1, wherein: in the step (2), the temperature of the vaporous hydrogen peroxide is detected through the first temperature sensor, and the vaporous hydrogen peroxide with the temperature reaching the sterilization temperature is sprayed to the bottle cap.