JP2001179194A - Process and equipment for cleaning liquid beverage/food conveying path - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent any detergent or chemicals from remaining in the conveying path, to prevent environmental pollution from being caused and to reduce the cleaning cost by performing the cleaning without using any detergent or chemicals, in a cleaning process of a conveying path for liquid beverage/ food such as milk, which process basically comprises alkali cleaning, acid cleaning and sterilization cleaning. SOLUTION: In the above cleaning process, as cleaning water for the alkali cleaning, electrolytic alkaline water is used and also, as cleaning water for the acid cleaning and sterilization cleaning, electrolytic acidic water containing an active chlorine component is used, to eliminate the need of using any detergent or chemicals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of cleaning a transport system for liquid food and drink, and a cleaning apparatus for cleaning the transport system.

[0002]

2. Description of the Related Art Beverages containing a plurality of components such as fats, proteins, sugars, starches, and other inorganic substances,
In the case of transporting liquid food and drink such as liquid food from a production site or a concentrated place to a specific place, a means for transporting using a transport system path composed of piping lines is often employed. In the case of employing such a transporting means, some of the components of the liquid food or beverage being transported in the transporting path coagulate or precipitate, adhere to the inner wall of the transporting path, and contaminate the transporting path. Therefore, after the transfer operation is completed or the transfer operation is periodically interrupted, the transfer path is cleaned.

[0003] Liquid foods and drinks include milk, various types of drinking water, soy sauce, sauces, other liquid seasonings, liquid foods such as soups, and the like. Since it contains at least a plurality of types of proteins, sugars, starches, and other inorganic substances, contaminants adhering to the inner wall of the transport system also contain at least a plurality of types of these components. For this reason, in the cleaning of the transport system, basically, three cleanings of alkali cleaning, acid cleaning, and sterilization cleaning are performed, and if necessary, rinse cleaning is performed before and after.

Conventionally, in the cleaning of the transport system, the alkali cleaning is performed with an alkaline detergent solution, the acid cleaning is performed with an acidic detergent solution, and the sterilization cleaning is performed with a germicide solution. Will be

[0005]

As described above, the cleaning of the transport system for the liquid food and drink requires an alkaline detergent, an acidic detergent,
Since the use of detergents and chemicals such as disinfectants is indispensable, sufficient consideration must be given to contamination of the environment by washing and drainage, detergents remaining in the transport system, and contamination of liquid food and beverages during transport of the chemicals. In addition, there is a problem that the cleaning cost is increased due to the detergent and the chemical.

Accordingly, an object of the present invention is to provide an alkaline detergent which has been conventionally used for cleaning a liquid food and drink conveying system,
An object of the present invention is to address the above-mentioned problems by reducing the amount of an acidic detergent, a bactericide, or the like, or eliminating the use of these detergents and chemicals.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a method of cleaning a transport system for liquid food and drink, and a cleaning apparatus for cleaning the transport system.

Thus, a first method of cleaning a liquid food and drink transport system according to the present invention is a liquid food and drink transporting system for transporting a liquid food and drink, which comprises alkali washing, acid washing, and sterilization washing. This is a method for cleaning a material transport system, wherein electrolytically generated acidic water containing an effective chlorine component is employed as the cleaning water for the acid cleaning and the sterilization cleaning.

Further, a second method for cleaning a liquid food / drink transport system according to the present invention is a method for cleaning a liquid food / drink which transports the liquid food / drink by alkali washing, acid washing, and sterilization washing. A method of cleaning a transfer path for use, wherein electrolytically generated alkaline water is used as the cleaning water for the alkaline cleaning.

[0010] A third method of cleaning a liquid food / drink transport system according to the present invention is directed to a liquid food / drink comprising cleaning the transport system for transporting the liquid food / beverage with alkali, acid, and sterilization. It is a method of cleaning a transfer system path, employing electrolytically generated alkaline water as cleaning water for the alkali cleaning,
Further, the present invention is characterized in that electrolytically generated acidic water containing an effective chlorine component is used as the washing water for the acid washing and the sterilization washing.

In these cleaning methods according to the present invention, washing water at a temperature higher than room temperature can be used as the washing water for the alkali washing, and if necessary, before the alkali washing and / or the sterilization. A rinse may be added after the rinse.

A first cleaning apparatus for a liquid food and beverage transport system according to the present invention is a cleaning apparatus for performing the first cleaning method according to the present invention, and includes a hot and cold water supply means, and an alkaline cleaning apparatus. An alkaline detergent solution supply unit that is water, an electrolytically generated acidic water supply unit, and a cold water supply unit,
An opening / closing valve for selectively switching supply of hot water, an alkaline detergent solution, electrolytically produced acidic water, and cold water is provided.

Further, a second cleaning device for a liquid food / drink transport system according to the present invention is a cleaning device for carrying out the second cleaning method according to the present invention, and comprises a hot and cold water supply means, Alkaline water supply means, an acidic detergent solution supply means that is wash water for acid washing, and a sterile detergent solution supply means that is wash water for sterilization wash, and a cold water supply means,
An opening and closing valve for selectively switching supply of hot water, electrolytically generated alkaline water, an acid detergent solution, a germicide solution, and cold water is provided.

[0014] A third apparatus for cleaning a transport system for liquid food and drink according to the present invention is a cleaning apparatus for carrying out the third method according to the present invention, comprising hot water supply means, electrolytically produced alkaline water. Supply means, an electrolytically generated acidic water supply means, and a cold water supply means, as well as hot water, electrolytically generated alkaline water,
An opening / closing valve for selectively switching the supply of the electrolytically generated acidic water and the cold water is provided.

The cleaning apparatus according to the present invention is provided with an alkaline detergent solution supplying means in parallel with the electrolytically produced alkaline water supplying means, and an opening / closing valve for selectively switching between these two supplying means. In addition, it is possible to adopt a configuration including an acidic detergent solution and a disinfectant solution supplying means in parallel with the electrolytically generated acidic water supplying means, and an opening / closing valve for selectively switching between these two supplying means.

[0016]

The first cleaning method according to the present invention comprises:
Electrolytically generated acidic water is used as the washing water for both acid cleaning and sterilizing cleaning.Electrolytically generated acidic water does not remain like an acid detergent or a bactericide. It can be rendered harmless by neutralizing with electrolytically generated alkaline water. For this reason, according to the cleaning method, it is possible to eliminate the problem of residual acidic detergents and disinfectants and environmental pollution, and to eliminate the use of conventional acidic detergents and disinfectants, and to perform acid washing and disinfection. Since the cleaning can be performed at the same time, the cleaning cost can be significantly reduced. The cleaning method is the first method according to the present invention.
By using the cleaning device of the above, the present invention can be suitably implemented.

Further, the second cleaning method according to the present invention employs electrolytically generated alkaline water as cleaning water for alkaline cleaning, and the electrolytically generated alkaline water does not remain like an alkaline detergent. In addition, it can be decomposed by contacting an organic substance during washing, and after washing, it can be neutralized with acidic water generated at the same time to make it harmless.
Therefore, according to the cleaning method, it is possible to eliminate the problem of residual alkaline detergent and environmental pollution,
The cleaning cost can be greatly reduced without using a conventional alkaline detergent. The washing method is
By using the second cleaning device according to the present invention, it is possible to carry out the method suitably.

Further, in the third cleaning method according to the present invention, electrolytically generated acidic water is used as cleaning water for both acid cleaning and sterilization cleaning, and electrolytically generated alkaline water is used as cleaning water for alkali cleaning. This has both the effects of both the first cleaning method and the second cleaning method according to the present invention. That is, according to the cleaning method,
It is possible to solve the problems of the residual acid detergent, bactericide, and alkaline detergent and environmental pollution, and to further significantly reduce the cleaning cost. The cleaning method can be suitably implemented by using the third cleaning device according to the present invention.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a piping system constituting a cleaning device according to an example of the present invention. The washing device is used to transport milked milk (delivery pipes and tanks)
Cleaning, alkali cleaning, acid cleaning, sterilization cleaning,
It has a function of performing rinse cleaning. The cleaning device basically uses electrolytically produced alkaline water as cleaning water for alkaline cleaning, and uses electrolytic acidic water as cleaning water for acid cleaning and sterilization cleaning. An alkaline detergent solution is used as washing water for washing, an acidic detergent solution is used as washing water for acid washing, and a germicide solution is used as washing water for sterilizing washing. The electrolytically generated alkaline water and the electrolytically generated acidic water are supplied from the electrolytic water supply device shown in FIG.

A piping system 10 constituting the cleaning device
Is a first supply line 11 for supplying high-temperature water, a second supply line 12 for supplying electrolytically generated alkaline water, a third supply line 13 for supplying electrolytically generated acidic water, and a fourth supply line for supplying cold water. The first supply line 11 is provided with a first bypass line 15, and the fourth supply line 14 is provided with a second bypass line 16. Each of the pipes 11 to 16 is provided with an electromagnetic open / close valve 11a to 16a, and the first bypass pipe 15 has a detergent tank 15b containing an alkaline detergent. A chemical tank 16 in which an acidic detergent and a germicide are selectively stored.
b is interposed.

Opening and closing of each of the open / close valves 11a to 16a is controlled by a control device (not shown). High-temperature water and an alkaline detergent solution are selectively supplied, electrolytically generated alkaline water is supplied through a second supply line 12, electrolytically generated acidic water is supplied through a third supply line 13, and a fourth supply line is provided. Road 14
Through which cold water, an acidic detergent solution and a disinfectant solution are selectively supplied.

FIG. 2 shows an electrolyzed water supply device 20 for generating electrolyzed water and supplying the generated electrolyzed water to the piping system 10. Electrolyzed water supply device 2
0 is the first storage tank 2 for preparing and storing the electrolyzed water
1, an electrolysis device 22, a second storage tank 23 for storing electrolyzed alkaline water, a third storage tank 24 for storing electrolyzed acidic water, and a heating tank 25 for heating the electrolyzed alkaline water to a predetermined temperature. Have.

A predetermined amount of salt is added to the first storage tank 21, and tap water is supplied through a water softener 26, so that a diluted salt solution having a predetermined concentration in the range of 0.1 to 3.0% by weight is obtained. It is prepared and stored as electrolyzed water. The diluted saline stored in the first storage tank 21 is supplied to the electrolysis device 2.
During the operation of 2, the electrolyte is supplied to the anode chamber and the cathode chamber in the electrolytic cell of the electrolysis device 22 to be electrolyzed. The diluted saline solution is electrolyzed in the anode chamber and the cathode chamber. In the anode chamber, acidic water (electrolytically generated acidic water) is generated, and in the cathode chamber, alkaline water (electrolytically generated alkaline water) is generated.

The electrolyzed alkaline water generated in the electrolyzer 22 is temporarily stored in a second storage tank 23, and then supplied to a heating tank 25, where the heater 27 operates in the heating tank 25 to a predetermined temperature, for example. Heat to about 70 ° C. The supply pipe 25a of the heating tank 25 is connected to the second supply pipe 12 in the piping system 10 of the cleaning device, and is supplied to the second supply pipe 12 by driving the supply pump 25b as necessary. It is supplied to the milk transport system A as washing water for alkaline washing. The generated electrolyzed acidic water is stored in the third storage tank 24.
The supply line 24a of the third storage tank 24 is connected to the third supply line 13 in the piping system 10 of the cleaning device. If necessary, the supply line 24a is supplied to the third supply line 13 by driving the supply pump 24b. Is supplied to the milk transport system A as washing water for acid washing.

A piping system 10 constituting the cleaning device
In the first supply pipe 11 is connected to a supply source of high-temperature water, and if necessary, supplies high-temperature water at a predetermined temperature, for example, about 70 ° C., to the milk transport system A as washing water for rinsing, By opening and closing the two opening / closing valves 11a and 15a, high-temperature water is supplied to the detergent tank 15b to prepare an alkaline detergent solution at about 70 ° C. in the detergent tank 15b, and this alkaline detergent solution is used as washing water for alkaline washing with milk. It is supplied to the transport path A.

The fourth supply line 14 is connected to a supply source of tap water, and if necessary, supplies cold water to the first supply line 1.
1 to make hot water at a predetermined temperature, for example, about 35 ° C., and supply it to the milk transport system A as rinse water for rinsing, and to open and close both open / close valves 14a, 16a.
The cold water is supplied to the chemical tank 16b by the open / close switching operation to prepare an acidic detergent solution or a bactericide solution in the chemical tank 16b, and the acidic detergent solution and the bactericide solution are washed with acid washing water and sterilizing washing. Water is supplied to the milk transport system A.

In the cleaning device, each open / close valve 1
By selectively opening and closing 1a to 16a, the first cleaning method, the second cleaning method, and the third cleaning method according to the present invention can be performed, and the conventional cleaning method can be performed. Can also.

The first cleaning method according to the present invention comprises the steps of carrying out alkali cleaning, acid cleaning, and sterilization cleaning of a liquid food and drink transport system, and is effective as washing water for acid cleaning and sterilization cleaning. Electrolytically generated acidic water containing a chlorine component is employed.

In the embodiment of the cleaning method, the first supply pipe 11 of the piping system 10 constituting the cleaning apparatus, the first bypass pipe 15 provided in the pipe 11 and the third supply pipe 13 The fourth supply line 14 is used to wash the milking milk transport system A. In the washing method, rinse washing, alkali washing, acid washing and sterilization washing, and rinse washing are performed in this order. Is what you do.

In the first rinse cleaning, the first supply line 11 and the fourth supply line 14 are opened to supply high-temperature water and cold water, and to supply temperature-controlled hot water to the transport system A. . Second
In the alkaline cleaning of the first embodiment, the first supply line 11 and the first bypass line 15 are opened, and the high-temperature water and the detergent tank 15b are opened.
The alkaline detergent solution flowing out from the inside is joined to prepare washing water for alkaline washing, and this alkaline washing water is supplied to the transport system path A. The third acid washing and the sterilizing washing employs electrolytically generated acidic water as the washing water and perform both of these washings at the same time. The electrolytically generated acidic water in the storage tank 24 is supplied to the transport system path A. The fourth rinse cleaning is performed in the same manner as the first rinse cleaning. In the cleaning method, hot and cold water of about 35 ° C. is used in rinse cleaning, and pH 11 is used in alkaline cleaning.
The washing water heated to about 70 ° C. with the above alkaline washing water is used for acid washing and sterilization washing, and electrolytically produced acidic water having a pH of 3 or less and an effective chlorine concentration of 10 mg / L or more, preferably 30 mg / L or more is adopted. Is preferred.

According to this cleaning method, electrolytically generated acidic water is employed as the cleaning water for both acid cleaning and sterilizing cleaning. The electrolytically generated acidic water has an acidic cleaning and bactericidal action. It does not remain like an agent, and the washing waste water after washing can be neutralized with alkaline water generated at the same time as the electrolytic water to make it harmless. For this reason, according to the cleaning method, it is possible to eliminate the problem of residual acidic detergents and disinfectants and environmental pollution, and to eliminate the use of conventional acidic detergents and disinfectants, and to perform acid washing and disinfection. Since the cleaning can be performed simultaneously, the cleaning cost can be greatly reduced.

When only the cleaning method is performed, it is not always necessary to use the cleaning apparatus having the structure shown in FIG. 1 as it is. In this case, in the piping system 10 constituting the cleaning device, the second system used for acid cleaning is used.
Since the bypass conduit 16 is not used, the conduit 16 can be eliminated, and the cleaning method can be performed by the cleaning device having such a configuration.

A second cleaning method according to the present invention comprises cleaning the transport system for liquid food and drink with alkali, acid, and sterilization, and employs electrolytically generated alkaline water as cleaning water for alkali cleaning. Things.

In the embodiment of the cleaning method, the first supply pipe 11 and the second supply pipe 11 of the piping system 10 constituting the cleaning apparatus are used.
Supply line 12, third supply line 13, fourth supply line 1
4 and a second bypass line 16 provided in the fourth supply line 14
Is used to clean the transport system A of milked milk. In the cleaning method, rinse cleaning, alkali cleaning,
Acid cleaning, sterilization cleaning, and rinsing cleaning are performed in this order.

In the first rinse cleaning, the first supply line 11 and the fourth supply line 14 are opened to supply high-temperature water and cold water, and to supply the adjusted hot and cold water to the transfer path A. . Second
In the alkaline cleaning of (2), the second supply pipe line 12 is opened, and the heated electrolytically produced alkaline water in the heating tank 25 of the electrolytic water supply device 20 is supplied to the transport system path A. Third
In the acid washing, the fourth supply pipe 14 and the second bypass pipe 16 are opened, and cold water and an acidic detergent solution flowing out of the chemical tank 16b are combined to prepare washing water for acid washing. Then, the acid cleaning water is supplied to the transport path A. In the fourth sterilizing cleaning, the sterilizing agent is added to the chemical tank 16b after the acid cleaning.
, The fourth supply pipe 14 and the second bypass pipe 16 are opened, and the cold water and the germicide solution flowing out of the medicine tank 16b are combined to prepare washing water for germicidal washing. Water is supplied to the transport system path A. The fifth rinse washes
Perform the same as in the first rinse cleaning. In the washing method, hot water of about 35 ° C. is used for rinsing, washing water heated to about 70 ° C. with electrolytically generated alkaline water of pH 11 or more for alkali washing, and an acidic detergent solution of pH 3 or less for acid washing. Is preferred.

According to the cleaning method, the electrolytically generated alkaline water is employed as the cleaning water for the alkaline cleaning, and the electrolytically generated alkaline water has an alkali cleaning action and may remain like an alkaline detergent. In addition, it is possible to decompose by contacting an organic substance during washing, and to neutralize acidic water generated at the same time as washing water after washing to make the washing wastewater harmless. Therefore, according to the cleaning method, the problem of residual alkaline detergent and environmental pollution can be solved, and the cleaning cost can be significantly reduced without using a conventional alkaline detergent.

When only the cleaning method is performed, it is not always necessary to use the cleaning apparatus having the structure shown in FIG. 1 as it is. In this case, in the piping system 10 constituting the cleaning device, the first bypass line 15 used in the alkaline cleaning is not used, so that the piping 15 can be eliminated. The cleaning method can also be performed.

The third cleaning method according to the present invention comprises washing the transport system of the liquid food or beverage with an alkali, an acid, and a sterilizing wash. Electrolytically generated alkaline water is used as washing water for the alkali washing. Electrolytically generated acidic water is used as washing water for washing and sterilizing washing. Therefore, the cleaning method is configured by combining the first and second cleaning methods described above, and has the functions and effects of both the cleaning methods.

In order to carry out the cleaning method, in the first rinse cleaning, the first supply pipe 11 and the fourth supply pipe 14 are opened to supply hot water and cold water to control the temperature. Hot water is supplied to the transport system path A. In the second alkaline cleaning, the second supply pipe 12 is opened and the electrolytic water supply device 20 is opened.
The heated electrolytically produced alkaline water in the heating tank 25 is supplied to the transport system path A. In the third acid washing and the sterilizing washing, the third supply pipe 13 is opened to supply the electrolytically generated acidic water in the fourth storage tank 24 of the electrolytic water supply device 20 to the transport system A.

When only the cleaning method is performed, it is not always necessary to use the cleaning apparatus having the structure shown in FIG. 1 as it is. In this case, in the piping system 10 constituting the cleaning device, the first bypass line 15 used for alkali cleaning and the second bypass line 16 used for acid cleaning and sterilization cleaning are not used. Both pipes 15 and 16 can be eliminated, and the cleaning method can be implemented by the cleaning device having such a configuration.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of a piping system constituting a cleaning apparatus according to an example of the present invention.

FIG. 2 is a schematic explanatory view of an electrolyzed water supply device that generates and supplies electrolyzed water to be supplied to the piping system.

[Explanation of symbols]

A: milk conveying system, 10: piping system, 11: first supply line, 11a: open / close valve, 12: second supply line, 1
2a: open / close valve, 13: third supply line, 13a: open / close valve, 14: fourth supply line, 14a: open / close valve, 1
5. First bypass line, 15a Open / close valve, 15b
Detergent tank, 16: second bypass line, 16a: open / close valve, 16b: chemical tank, 20: electrolytic water supply device, 2
DESCRIPTION OF SYMBOLS 1 ... 1st storage tank, 22 ... Electrolyzer, 23 ... 2nd storage tank, 24 ... 3rd storage tank, 24a ... Supply pipeline, 2
4b: supply pump, 25: heating tank, 25a: supply line, 25b: supply pump, 26: water softener, 27: heater.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B201 AA13 AB51 BB03 BB92 CD41 4B001 AC46 BC06 BC99 CC01 EC99 4C058 AA30 BB07 JJ08 JJ21 4H003 BA12 DA12 DA17 EA01 EA22 ED02 FA02 FA03 FA34

Claims (10)

[Claims] 1. A method for cleaning a transport system for a liquid food and beverage, comprising washing a transport system for transporting the liquid food and beverage with an alkali, an acid, and a sterilizer. A method for cleaning a transport system for a liquid food or beverage, wherein an electrolytically produced acidic water containing an effective chlorine component is employed. 2. A method for cleaning a transport system for a liquid food and drink, comprising washing a transport system for transporting the liquid food and beverage with an alkali, an acid, and a sterilizer. What is claimed is: 1. A method for cleaning a transport system for a liquid food or drink, comprising using generated alkaline water. 3. A method for cleaning a transport system for liquid foods and drinks, comprising subjecting a transport system for transporting liquid foods and drinks to alkali washing, acid washing, and sterilization washing, wherein electrolytic cleaning is performed as washing water for the alkali washing. A method for cleaning a liquid food and beverage transport system, wherein alkaline water is used, and electrolytically generated acidic water containing an effective chlorine component is used as cleaning water for the acid cleaning and the sterilization cleaning. 4. A method for cleaning a transport system for a liquid food or beverage according to claim 1, wherein the cleaning water for the alkaline cleaning is a cleaning water at a temperature higher than a normal temperature. A method for cleaning the transport system for liquid food and drink. 5. A method for cleaning a transport system for a liquid food or beverage according to claim 1, 2, 3, or 4, wherein rinsing cleaning is added before alkali cleaning or after sterilization cleaning. A method for cleaning the transport system for liquid food and drink. 6. A cleaning apparatus for carrying out the method of cleaning a transport system for liquid food and drink according to claim 1, comprising hot water supply means, and alkali detergent solution supply means for cleaning water for alkaline cleaning. For liquid food and drink, comprising an electrolytically generated acidic water supply means and a cold water supply means, and an opening / closing valve for selectively switching supply of hot water, alkaline detergent solution, electrolytically generated acidic water, and cold water. Cleaning system for transport system. 7. A cleaning apparatus for carrying out the method for cleaning a transport system for liquid food and drink according to claim 2, wherein the hot water supply means, the electrolytically generated alkaline water supply means, and the cleaning water for acid cleaning. Acid detergent solution supply means that is, disinfectant solution supply means that is cleaning water for sterilization cleaning, and cold water supply means, as well as hot water, electrolytically generated alkaline water, acid detergent solution supply means, disinfectant solution, and cold water A cleaning device for a liquid food and beverage transport system, comprising an opening / closing valve for selectively switching supply. 8. A cleaning apparatus for carrying out the method for cleaning a transport system for a liquid food and beverage according to claim 3, wherein the hot water supply means, the electrolytically produced alkaline water supply means, and the electrolytically produced acidic water supply are performed. Means and cold water supply means,
A cleaning device for a liquid food and beverage transport system, comprising: an open / close valve for selectively switching supply of electrolytically generated alkaline water, electrolytically generated acidic water, and cold water. 9. The cleaning apparatus for a transport system for a liquid food or beverage according to claim 8, wherein said alkaline detergent solution supply means is a cleaning water for alkaline cleaning in parallel with said electrolytically produced alkaline water supply means. A cleaning device for a liquid food / drink transport system, comprising an opening / closing valve for selectively switching between both supply means. 10. The cleaning apparatus for a transportation system for liquid food and drink according to claim 8, wherein the acidic cleaning solution for acid cleaning and the cleaning water for sterilization cleaning are provided in parallel with the electrolytically generated acidic water supply means. A cleaning device for a liquid food and beverage transport system, comprising: a supply means for a certain disinfectant solution; and an opening / closing valve for selectively switching between these two supply means.