JPS6030643A - Washing of machinery - Google Patents

Abstract

PURPOSE:To keep the action of a detergent for a long period, and to improve the washing effect, by blasting a detergent liquid, water and air from single nozzle with respective prescribed pressures. CONSTITUTION:Machines are washed without using brush, by blasting a detergent liquid, water and air from single nozzle with respective prescribed pressures. The detergent liquid is blasted in the form of finely foamed liquid, retained for a long period even on a smooth surface, exhibits the detergent function for a long time, and gives improved washing effect. When a process comprising the blasting of high-pressure water is used as a pretreatment process of the above washing process, the material sticked to the machine by adhesive force, e.g. egg yolk and albumen, etc. can be removed physically, and the following chemical washing treatment with detergent liquid can be facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cleaning machinery, and more particularly to a method for cleaning food machinery that is installed in a food processing factory and requires washing with water.

Machines that fully automatically process various foods in food processing factories 1 For example, automatic egg breaking machines, which accept the broken egg yolk and albumen flowing down from the eggshell into a container, and separate and remove the egg white from the container. For machines that separately collect only the egg yolks, the yolks and whites tend to adhere to the container and other parts of the egg-breaking mechanism when breaking the eggs or separating the yolks and whites, so they must be cleaned. There is a need.

When cleaning food that has adhered to the surface of each part of the food processing machine as described above, cleaning using a cleaning brush may not be able to reliably remove the food that has adhered to the small parts or deep parts of the machine. Hair from the brush comes off and sticks to the machine, and this removal is undesirable because it causes the hair to get mixed into food.

On the other hand, as a cleaning method for cleaning machinery without using a brush, inert scum or air is blown into a cleaning solution to generate air bubbles, and the cleaning process is carried out in the cleaning solution containing the bubbles (Japanese Patent Laid-Open No. 47 -22843 Publication), and a spray cleaning method (Japanese Patent Application Laid-Open No. 2002-228402) in which a spray nozzle is installed on the peripheral wall of the washing tank, primary spray cleaning is performed with the liquid retained in this tank, and then secondary spraying with cleaning water is performed to completely clean the equipment. (Refer to Publication No. 1989-89135).

However, when trying to use the above cleaning method to clean food processing machines, the former method uses a bubble solution, so even if bubbles are blown, the time it takes for the bubbles to adhere to the surface of the machine is However, the latter method has the disadvantage that the amount of detergent solution and the time required for cleaning are large.

In view of this, the present invention has been developed by spraying detergent liquid, water, and air at predetermined pressures from the same jet orifice, without using a brush, and spraying the machine as a cleaning foam liquid of fine particles to clean a smooth surface. The purpose of the present invention is to provide a cleaning method in which the detergent remains attached for a long period of time and has a long residence time. The purpose of this invention is to provide an optimal cleaning method that can be applied to a cleaning device that uses a jointed robot to clean the area to be cleaned.

Embodiments of the present invention will be described below with reference to the drawings.

The present invention is characterized in that cleaning is carried out by simultaneously spraying a detergent solution, water, and air at a predetermined pressure from a single nozzle opening onto a portion of a machine to be cleaned that requires cleaning, The pre-process includes spraying of high-pressure water, and the post-process includes spraying a hypochlorous acid solution.

The opening shape and dimensions of the nozzle and the pressures of the detergent solution, water, and air are as follows.

The shape of the opening of the nozzle is as follows: As shown in Fig. 1, the nozzle 1 itself has a flat tubular shape, or only the tip opening IA has a flat shape and is an oval opening. Depending on the shape of the machine to be cleaned, the opening may be circular.

The dimensions of the nozzle 1 are the long axis of the opening IA.

f 13 rry'm, m diameter D2? 2 m/m,
The length of the nozzle 1 is approximately 100 nV/m, and the supply pressure of detergent solution and water is 3.2 kg/i, respectively.
The air supply pressure is set to 2.85 vd.

By ejecting the detergent foam with the above dimensions and pressure values, the granular form of the detergent foam is most preferable, and a foam with a cleaning effect can be obtained.

When the present invention is applied to the above-mentioned egg breaking machine - Implementation detergent solution (
As the stock solution, an alkaline detergent is used, and an example of its composition is as follows.

Caustic soda 15 (%) Anionic surfactant 5 Ethanolamine 2 Chelating agent 3 Solvent (propylene glycol) 5 Water 70 The above detergent solution becomes foamy with water and air at the tip of the nozzle 1, but at this time the detergent solution On the other hand, it is further diluted with about 1.00 times as much water and is sprayed onto the machine to be cleaned as a cleaning liquid (foam).

As described above, as a result of carrying out the cleaning according to the present invention and the manual cleaning over the same period of time, a cleaning result free from bacterial contamination was obtained in both cases, and therefore, even without using a brush, the same cleaning effect as the conventional manual cleaning can be obtained. It has been found that the present invention is superior in terms of unmanned cleaning using the cleaning port getter and prevention of hair contamination during removal.

Figure 2 shows an example of a piping system for carrying out the above-mentioned cleaning, in which each supply pipe line 2, 3, 4, 5, 6 for tap water, high pressure water, detergent solution, hypochlorous acid, and air is connected. Pulp 7.8,9
．． 1 (1, 11 (in the air supply system, insert a filter 12 and a pressure regulating valve 13 on the downstream side of the pulp 11), manifold T, !1. ts, ig, check valve Z).

21.22.23'e is connected to the nozzle section. The air pipe line 6 is connected to the nozzle section via a filter 5 and a pressure regulating valve 26.

The nozzle section has a high-pressure water blowing nozzle γ, a blowing nozzle 1 for blowing a mixture of detergent liquid, tap water, and air, and a separate blowing nozzle for hypochlorous acid, and the blowing from these nozzles is as described above. This is done by switching the switching valves 1 (i, 17, 18, and 19).The nozzle 1 that blows out the detergent solution, tap water, and air is longer than the other nozzles n and 28, as shown in FIG. Its dimensions and shape are as described above.

Therefore, the nozzle part 24 having the nozzle 1, 27, 28'e is attached to the wrist part 30 of the jointed armrest 29 as shown in FIGS. 4(A) and CB), and each pipe line is connected to this nozzle part. In this case, the direction of each nozzle can be controlled by free pressure by the movement of each joint of W, and automatic cleaning can be performed toward the cleaning area of the machine to be cleaned.

The present invention based on the above configuration simultaneously sprays the detergent liquid, water, and air onto the machine to be cleaned from one nozzle at predetermined pressures, so that the detergent liquid, water, and air are well mixed and the cleaning liquid is is attached to the machine as fine particle detergent foam of lrl'rnφ or less, and can remain in the attached state for a long time even on a smooth surface, and as a result, it can work effectively as a detergent. By the way, the vertical length of the machine is 100
When sprayed on the vertical surface of rrV/rn, it took about 10 minutes to fall, and the average diameter of the cleaning liquid bubbles was 0.5
~1.0rrI/rrI.

Furthermore, since the present invention does not use any brushes, there is no possibility that the hairs from the hairs will stick to the machine and will not cause any inconveniences such as the hairs from the hairs getting mixed into the food when applied to food processing machines.

Furthermore, by including a pre-process of spraying high-pressure water, the present invention can physically remove sticky deposits such as egg yolks and whites that are stuck to the machine, and chemical cleaning with a cleaning solution in the post-process. Processing can be facilitated.

Furthermore, by including the process of repeating the process of spraying high-pressure water, it is possible to remove all residual detergent liquid after the cleaning action has been completed, and it is possible to completely eliminate the contamination of the cleaning liquid with the food.

The process of spraying hypochlorous acid has a sterilizing effect on the machine after cleaning, and even if bacteria adhere to the machine afterwards, it is killed and there is no bacterial growth.

The present invention, which has the above-mentioned effects, has a single nozzle) v
Since it can be used by attaching it to the hand part of the f-joint logget, it is ideal for unattended cleaning, and provides excellent hygiene benefits, including a reduction in human labor required for cleaning work.

[Brief explanation of drawings]

FIG. 1 is a partial perspective view showing an example of a blow-off nozzle for carrying out the present invention, FIG. 2 is a circuit diagram showing an example of the same piping,
Figure 3 is a side view of the nozzle part in Figure 2, and Figure 4 (A
), (Il) are a front view and a side view of an example of an articulated robot in which the above-mentioned nozzle part is attached and automatic cleaning is performed. 1... nozzle, IA... opening, 2... Tap water pipe line, 3... High pressure water chamber line, 4... Detergent liquid pipe line, 5...
・Hypochlorous acid pipe, 6...Air pipe, 7, 8, 9
．． 10.11... Valve, 14, 15... Manhold, lfi, 17, 18. 19... Switching valve, San-
... Nozzle part, 27... High pressure water blowing nozzle, public...
・Hypochlorous acid blowing nozzle, 29...joint loget. Applicant's agent Kiyoshi Inomata

Claims (1)

[Claims] 1. A method for cleaning machinery, characterized in that the machine is cleaned by jetting detergent liquid, water, and air simultaneously at predetermined pressures from one jet nozzle. 2. The method for cleaning machinery according to claim 1, which includes a step of spraying high-pressure water before the cleaning step. 3. The method for cleaning machinery according to claim 1, which includes the step of repeatedly spraying the high-pressure water. 4. The method for cleaning machinery according to claim 1, which includes a step 4 of spraying a hypochlorous acid solution after the cleaning.