JPH11189791A - Conveyor lubricating cleaning liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject cleaning liquid at a low running cost due to no necessity for installing wastewater treating equipment without contaminating a conveying device such as a conveyor and excellent in sterilizing properties and detergency by using an alkaline liquid prepared by electrolyzing saline water. SOLUTION: This cleaning liquid comprises an alkaline liquid (preferably at pH >=10) prepared by electrolyzing saline water. For example, a saline solution obtained by adding a very small amount (0.05-0.1%) of common salt to tap water is electrolyzed with an electrolytic device to provide a colorless, transparent and alkaline liquid containing 160 mg/L sodium, 140 mg/L chloride ions, 16 mg/L calcium, magnesium or the like at pH >=11 and having <=-800 mV oxidation reduction potential on the cathode side. The objective cleaning liquid is suitable for use in a plant for carrying with a conveyor handling foods.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating liquid on the upper surface of a conveyor, when a container such as a bottle or can containing a liquid, such as a soft drink, beer, or a seasoning, is transported by the conveyor.

[0002]

2. Description of the Related Art In a conveyor for transporting bottles and cans, the frictional force between the upper surface of the conveyor and the bottom surface of the bottles and cans is reduced, and the damage and wear of each of the two are reduced. For the purpose of reducing the power required for driving, a conveyor lubricating liquid is employed, and is sprayed and applied to the conveyor.

[0003] Conventionally used conveyor lubricating liquids are based on soap liquids, to which various additives are added in order to improve lubricity, detergency and, if necessary, disinfection. It was prepared and used after diluting this stock solution.

[0004]

In the conventional conveyor lubricating liquid, some of the components of soap or various additives remain and adhere to and accumulate on a part of the conveyor or a device attached to the conveyor, It was not preferable on hygiene and appearance.

[0005] Further, in a specific device, the lubricating liquid sprayed onto the conveyor and applied thereto mixes with water handled by the device, which may adversely affect the surface of the device and the product container. There are also problems such as the fact that the stock solution of the lubricating liquid is relatively expensive, and that it is necessary to treat the used lubricating liquid used and sprayed onto the conveyor as a waste liquid.

[0006] The present invention solves the problems of the conventional conveyor lubricating liquid, does not contaminate the conveyors and other transporting devices, has low running costs, and has a sterilizing property. An object of the present invention is to provide a conveyor lubricating cleaning liquid having excellent cleaning properties.

[0007]

The inventors of the present application have found that alkaline water obtained by electrolyzing salt water has a small friction coefficient close to the friction coefficient of a conventionally used conveyor lubricating liquid, that is, lubricity. Then, when used as a conveyor lubricating liquid, the frictional force between the upper surface of the conveyor and the bottom surface of a bottle or a can was reduced, and both of them were found to have the ability to reduce damage and abrasion. The present invention has been completed by noting that the alkaline liquid does not include a substance that adheres and accumulates on a conveyor such as a conveyor, and has excellent cleaning and sterilizing ability.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the present invention is a conveyor lubricating and cleaning liquid comprising an alkaline liquid obtained by electrolyzing salt water.

A device for electrolyzing salt water into strongly alkaline water of caustic soda and acidic water of chlorinated water is widely sold in the market as a "strong electrolyzed water generator" or the like. It has been known that alkaline water obtained by electrolyzing this salt water has the ability to remove proteins and oil stains.However, the coefficient of friction of this alkaline water, especially when compared to conventional conveyor lubricating fluids, is known. And was never considered.

[0010] The friction coefficient of alkaline water obtained by electrolyzing salt water was measured by experiments on various cans and PET bottles by the present inventors. It was close to the coefficient of friction of the lubricating liquid.

As described above, the friction coefficient of the conventional conveyor lubricating liquid is somewhat higher than that of the conventional conveyor lubricating liquid. However, in the conveyor used for conveying cans and bottles, the conventional conveyor lubricating liquid was used instead of the conventional conveyor lubricating liquid. However, cans and bottles of the same weight and number as those conventionally transported can be transported with almost the same driving force as the conventional ones, and the transported bottles, the bottom of the cans and the upper surface of the conveyor are more than conventional ones. Since the friction coefficient of alkaline water obtained by electrolyzing salt water was larger than the friction coefficient of conventional conveyor lubricating fluids, it did not cause any damage or abrasion. It was confirmed that it was gained.

That is, the alkaline water obtained by electrolyzing the salt water of the present invention has a low friction coefficient required for a conveyor lubricating liquid, ie, has a lubricating property. It can be used as a liquid.

Further, as described below, the alkaline water obtained by electrolyzing the salt water of the present invention has excellent characteristics not found in conventional conveyor lubricating liquids, and therefore can be used as a conveyor lubricating cleaning liquid. It is possible.

1. Contamination of the conveyor and attached devices can be prevented.

The conveyor lubricating cleaning solution of the present invention comprising alkaline water obtained by electrolyzing salt water is used for electrolyzing salt water produced by adding a small amount of salt to water such as tap water, industrial water, and groundwater in a usual manner. It does not contain soap components, chemical substances for improving physical properties, heavy metal compounds, and the like, unlike conventional conveyor lubricating fluids. For this reason, even if the conveyor lubricating cleaning liquid of the present invention is used for a long period of time, solids do not adhere to or accumulate on the conveyor and attached devices.

This is particularly important when handling food liquids that are required to be sanitary. Also,
Even when food liquids are not handled, solids do not adhere to or accumulate on the conveyor and attached equipment even after long-term use, from the viewpoint of preventing the occurrence of equipment problems due to sediments and the aesthetic appearance of the conveyor line. This is a great advantage.

2. A cleaning effect can be expected.

The alkaline water obtained by electrolyzing salt water is
It is known to have the ability to remove proteins and oil stains, and a certain degree of sterilization ability.

As a result, the growth of various bacteria such as bacteria is hindered, and bottles and cans can be transported under extremely sanitary conditions.

According to experiments conducted by the inventors, in the conveyor transport plant using the conveyor lubricating cleaning solution of the present invention, a clean appearance is maintained even after operation for more than six months, and propagation of various bacteria on the upper surface of the conveyor has been confirmed. Was not done,
Therefore, the conveyor lubricating cleaning liquid of the present invention is extremely useful in a conveyor transport plant that handles food.

3. Eliminates wastewater treatment.

Since the conveyor lubricating cleaning solution of the present invention is alkaline water obtained by electrolyzing salt water, even if it is discharged to the sewer as it is after use, it reacts with proteins and lipids in the sewage to reduce alkalinity. Since it is neutralized, there is no need for special wastewater treatment. That is, in the conventional conveyor lubricating liquid containing a soap component and a chemical substance, it is necessary to perform wastewater treatment. However, in the conveyor lubricating cleaning liquid of the present invention, this is not necessary, so that the cost can be reduced. .

4. Cost can be reduced.

Conventional conveyor lubricating liquids containing soap components and chemical substances are relatively expensive and costly in wastewater treatment and the like. However, the conveyor lubricating cleaning liquid of the present invention is not suitable for use with water such as tap water. It can be produced only by electrolysis with a commercially available electrolysis apparatus using salt as a raw material, and wastewater treatment is unnecessary, so that it can be used at low cost.

Depending on the products handled, the size of the capacity, etc. of the target conveyor transport plant, when used for the current standard high-capacity transport conveyor for bottling and canning plants, the total running cost is 2%. For about a year of use, it is advantageous to use the conveyor lubricating cleaning liquid of the present invention.

[0026]

Embodiment 1 An embodiment for producing a conveyor lubricating cleaning solution of the present invention will be described.

A small amount of salt (0.05% to 0.1%) is added to tap water.
%) Was electrolyzed with a commercially available electrolyzer (for example, a "strongly electrolyzed water generator") to generate alkaline water on the cathode side.

The analysis results and properties of the alkaline water are as follows:
It was as follows.

Component analysis results: Analysis items Alkaline water Tap water Sodium 160 mg / L 10 mg / L Chloride ion 140 mg / L 8.1 mg / L Calcium / magnesium etc. (Hardness) ^{16 mg / L 66 mg / L} (Other analysis items The result was almost the same as that of tap water.) Properties: Appearance Colorless and transparent liquid pH 11 or more Redox potential -800 mV or less Viscosity (25 ° C) Equivalent to water Transfer the friction coefficient of alkaline water by conveyor conveyor Cans, transparent containers made of polyethylene terephthalate ("PET bottle" or "PE
2 and 3 were obtained.

FIGS. 2 and 3 show a conventional conveyor lubricating liquid.
As shown in the figure, even if any of the articles was targeted, the friction coefficient was somewhat larger, but in the case of dry without any use, the friction coefficient was smaller than that of tap water. It was confirmed that.

When this alkaline water was used in a conveyor conveyor instead of the conventional conveyor lubricating liquid, the same weight and number of cans and bottles as those conventionally conveyed were conveyed with almost the same driving force as before. Can also be transported bottles,
There was no damage or wear on the bottom surface of the can and the top surface of the conveyor.

The pH of the alkaline water produced in this example
Was 11, but the alkalinity of the conveyor lubricating and cleaning liquid of the present invention is not limited to around pH 11, and conditions such as the shape, weight, and material of containers (bottles, cans, etc.) conveyed by the conveyor, and It can be appropriately selected according to conditions such as a conveyor conveyance speed. However, in order to maintain the cleaning ability, the sterilization ability, etc. while maintaining the lubricity (relatively low coefficient of friction), it was preferable to use in the alkaline region of pH 10 or more.

[0033]

Embodiment 2 An example in which the conveyor lubricating cleaning liquid of the present invention is used in a conveyor transport device will be described with reference to FIG.

The salt water is supplied from the salt water tank 1 to the electrolyzer 2. The alkaline water electrolyzed by the electrolyzer 2 and generated on the cathode side is sent to the alkaline water tank 3, and the acidic water generated on the anode side is sent to the acidic water tank 4. The alkaline water stored in the alkaline water tank 3 is sent to the spray nozzle 7 by the alkaline water supply unit 5 through the alkaline water supply pipe 6, and is sprayed on the upper surface of the conveyor 9 carrying the container (bottle) 8. .

On the other hand, the acidic water stored in the acidic water tank 4 is sent to a predetermined place by the acidic water feed unit 10 through the acidic water feed pipe 11.

The alkaline water sprayed on the conveyor and acting as a conveyor lubricating cleaning liquid returns to ordinary water and has no persistence, so that it is not necessary to provide a special wastewater treatment facility.

Using the equipment of the embodiment shown in FIG. 1 for continuous operation for half a year, no deposits or deposits remained on the conveyor or the like.

[0038]

The conveyor lubricating cleaning liquid of the present invention comprising alkaline water obtained by electrolyzing salt water has a relatively low coefficient of friction, and can be used in a conveyor conveyor instead of a conventional conveyor lubricating liquid. It has lubricity.

Since the conveyor lubricating cleaning liquid of the present invention is alkaline water, it has a cleaning property and a sterilizing property, and is suitable for use in a transport plant where handling of foods and the like and care for hygiene are required. I have. In addition, salt water produced by dissolving salt in water such as tap water can be produced simply by electrolysis using a commercially available electrolysis device, and after use, it returns to ordinary water, so it is special for wastewater treatment. There is no need to install equipment,
It can be used at very low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an example in which a conveyor lubricating cleaning liquid of the present invention is used for a conveyor transport device.

FIG. 2 is a diagram comparing the coefficient of friction of a conveyor lubricating cleaning liquid of the present invention and a conventional conveyor lubricating liquid for cans and PET bottles.

FIG. 3 is a diagram comparing the coefficient of friction between the conveyor lubricating cleaning liquid of the present invention and a conventional conveyor lubricating liquid for other cans and PET bottles.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Salt water tank 2 Electrolyzer 3 Alkaline water tank 5 Alkaline water water supply unit 6 Alkaline water water supply pipe 7 Spray nozzle 8 Container (bottle) 9 Conveyor 9

Claims (1)

[Claims] 1. A conveyor lubricating and cleaning liquid comprising an alkaline liquid obtained by electrolyzing salt water.