JP4072135B2 - Cleaning water cleaning system for cleaning equipment - Google Patents

Description

  The present invention relates to a cleaning water purification system in a cleaning device for cleaning a beverage container by using the cleaning water in a circulating manner.

  2. Description of the Related Art Conventionally, various beverage container cleaning devices are known (see, for example, Patent Document 1), and a cleaning device that cleans beverage containers with cleaning water is often used.

  As such a cleaning device, there is one that cleans and warms the surface of a beverage container (see cleaning device 1 in FIG. 1). The cleaning apparatus 1 includes a water storage unit 11 that stores and heats cleaning water, a cleaning pipe 12 and a cleaning pump 13 that convey cleaning water from the water storage unit, and a nozzle 14 that is provided at a downstream end of the cleaning pipe 12. And a conveyor 15 that conveys the beverage container C. In this washing | cleaning apparatus 1, the surface of the beverage container C is made by injecting the washing water which passed the inside of the washing | cleaning apparatus 1 with the conveyor 15 and heated with the heating apparatus 10 from the nozzle 14 to the beverage container C. And the beverage container C is warmed.

  In such a cleaning apparatus, since it is a waste of water and heat that the heated cleaning water is used for cleaning once and is discarded, the cleaning water is circulated and used. When washing water is recycled, the content of dirt components in the washing water increases as washing is performed, so the washing device is stopped and the washing water is replaced, but in this case, the drinking water production line is stopped. As a result, the production efficiency is lowered, and the labor cost for replacing the washing water, the water bill, and the energy cost for heating the washing water again are increased.

  Therefore, it has been considered to purify the wash water to be circulated with a purifier. As a purification device, it is conceivable to first use a filter made of activated carbon, a hollow fiber membrane or the like. In this case, however, if the dirt component is adsorbed and accumulated in the filter, the purification ability is lowered. As a result, the cost has increased. In addition, as a purification device, an oxidizer such as chlorine or ozone or other chemicals may be administered to decompose the soil components in the wash water. In this case, new harmful substances such as trihalomethane may be generated. The drug itself may become a soil component, and a soil component having a strong binding force of molecules such as sugar attached to the surface of the beverage container cannot be decomposed.

Since the purification device as described above has problems in terms of purification capability and cost, a purification device that decomposes the soil components by microorganisms can be considered next. This purification device of the septic tank type is usually used for water treatment / drainage. It is used for treatment, etc., and if you try to use it for circulating wash water, there will be a problem of contamination of microorganisms into the wash water, and even if measures are taken to prevent contamination of microorganisms, This could not be detected when mixed.
JP 2004-25153 A

  The present invention has been made in view of the above points, and an object of the present invention is a cleaning water purification system in a cleaning apparatus that circulates and uses cleaning water to clean a beverage container. It is possible to eliminate the need for replacement of cleaning water, and it is possible to suppress the cost of replacement of cleaning water and the reduction in production efficiency caused by stopping the cleaning device when replacing cleaning water. An object of the present invention is to provide a cleaning water purification system for a cleaning device that can detect even when the cleaning water is mixed in the cleaning water.

In order to solve the above-mentioned problem, in the invention according to claim 1, the raw water transported from the cleaning device 1 that circulates and uses the cleaning water to the purification device 2 that purifies the cleaning water (raw water) to be purified by activated sludge. The piping 3 and the treated water piping 4 for returning the cleaning water (treated water) purified by the purification device 2 to the cleaning device 1 are connected to the cleaning device 1 and the purification device 2, respectively. Is stored in the treatment tank 21, and the microorganisms of the activated sludge charged therein decompose the dirt components in the washing water. The washing water in the treatment tank 21 is filtered and the filtered washing water is treated with the treated water piping. The detection unit 5 including a purification degree sensor for detecting a decrease in the purification degree of the washing water when the filtration membrane of the filtration unit 22 is broken is provided in the treated water pipe 4. 4 part up Together comprise a gas-liquid separation pipe 43 consisting of upper pipe 43a and a lower pipe 43b branches to and is characterized by comprising a transparent sensor 51a as purification degree sensor provided in the lower pipe 43b.

  By having such a configuration, a high purification ability is obtained because it is decomposed by microorganisms, and it is not necessary to replace cleaning water over a long period of time. While it is possible to suppress a decrease in production efficiency due to stopping the cleaning device 1 at the time of replacement, even if microorganisms are mixed into the treated water, this can be detected by the detection unit 5. Thus, the conveyance of the treated water to the cleaning device 1 can be stopped to prevent the beverage container C from being contaminated by the cleaning water mixed with microorganisms.

Further, the detecting section 5, by providing the cleaning degree sensor for detecting a decrease in the purification of the wash water when the filtration membrane of the filtration unit 22 is damaged, the reduction of the purification of the wash water by purification degree sensor It becomes possible to detect the breakage of the filtration membrane.

Further, the constituting in the gas-liquid separator pipe 43 consisting of upper pipe 43a and a lower pipe 43b which branches a part of the treatment water pipe 4 vertically, provided the transparency of the sensor 51a as purification degree sensor to the lower pipe 43b Thus, erroneous measurement of transparency due to bubbles can be prevented.

Moreover, in the invention which concerns on Claim 2 , it becomes a shape which has a parallel surface which opposes the cross section of the part to which the transparency sensor 51a of the lower piping 43b of the gas-liquid separation piping 43 is attached in Claim 1. It is what. By setting it as such a structure, the measurement precision of transparency improves.

  In the present invention, since it is decomposed by microorganisms, high purification ability is obtained, and it is unnecessary to replace cleaning water over a long period of time. Although it is possible to suppress a decrease in production efficiency due to stopping the cleaning device at the time, even if microorganisms are mixed into the treated water, it can be detected by the detection unit, and the treated water is washed. By stopping the conveyance to the apparatus, it is possible to prevent the beverage container from being contaminated by the washing water mixed with microorganisms.

  Hereinafter, a cleaning water purification system (hereinafter simply referred to as a purification system) of a cleaning apparatus of the present invention will be described based on the embodiment shown in FIGS. 1 to 3. FIG. 1 shows an overall configuration diagram.

  The cleaning device 1 in this embodiment is a so-called “warmer” that cleans the surface of the beverage container C and warms the beverage container C. In addition to the above-mentioned “warmer”, the cleaning device includes a device that only cleans the surface without warming the beverage container, and the beverage container is cleaned using circulating cleaning water. If it does not specifically limit. The beverage container C is a can, a bottle, or the like, and the drinking water filled in the beverage container C is beer, juice, or the like, but is not particularly limited. In addition, the washing | cleaning process by this washing | cleaning apparatus 1 is between the process of filling the drink container C which is the pre-process, and the label sticking process to the drink container C and the boxing process of the drink container C which are post processes. is there. When drinking water is filled in the beverage container C in the previous process, the drinking water adheres to the surface of the beverage container C, but when the process proceeds to the labeling process to the beverage container C in the subsequent process or the packaging process of the beverage container C as it is, Since the surface of the beverage container C to which the drinking water has adhered or condensed is pasted or boxed, the surface of the beverage container C is washed by this cleaning process and the beverage container C is warmed to prevent condensation. Is.

  As shown in FIG. 1, the cleaning device 1 includes a water storage unit 11 that includes a heating device 10 such as a heater that stores the cleaning water and heats the cleaning water, a cleaning pipe 12 that transports the cleaning water from the water storage unit 11, and It comprises a cleaning pump 13, a nozzle 14 that is provided at the downstream end of the cleaning pipe 12 and injects cleaning water, and a conveyor 15 that transports the beverage containers C.

  In this cleaning device 1, when the beverage container C is conveyed to the conveyor 15 and passes through the inside of the cleaning device 1, the surface of the beverage container C is washed by the cleaning water sprayed from the nozzles 14 disposed above the conveyor 15. Is washed and heated. Moreover, the water storage part 11 is arrange | positioned under the conveyor 15, and the wash water used for washing | cleaning is stored in the water storage part 11, and is circulated and utilized. And the washing water of the washing | cleaning apparatus 1 is purified by this purification system, and it demonstrates below.

  The purification system connects the raw water pipe 3 and the treated water pipe 4 to the cleaning device 1 and the purification device 2 respectively to form a circulation pipe, and the purification device 2 filters the treatment water and the washing water for purifying the washing water. The detection unit 5 is provided in the treated water pipe 4 to detect an abnormality when the filtration membrane of the filtration unit 22 is broken. First, the basic configuration will be described.

  The raw water pipe 3 conveys cleaning water (raw water) to be purified from the cleaning device 1 to the purification device 2, and its upstream end is connected to the lower end of the water storage unit 11 of the cleaning device 1, The downstream end is disposed on the upper part of the treatment tank 21 of the purification device 2. The raw water pipe 3 is provided with a raw water pump 31 and a raw water valve 32 for conveying the raw water from the cleaning device 1 to the purification device 2, and the raw water can be transported and stopped arbitrarily. Note that the raw water pump 31 may be omitted by disposing the water storage unit 11 of the cleaning device 1 at a position higher than the treatment tank 21 of the purification device 2. The raw water pipe 3 is provided with a thermometer 33 for measuring the temperature of the raw water, a conductivity sensor 34 for measuring the conductivity, and a strainer 35 for removing large foreign matters in the raw water.

  The treated water pipe 4 returns the washing water (treated water) purified and filtered by the purification device 2 to the washing device 1, and its upstream end is connected to the filtration unit 22 of the purification device 2 and downstream. The side end portion is disposed on the upper portion of the cleaning apparatus 1. The treated water pipe 4 is provided with a treated water pump 41 and a treated water valve 42 for sucking treated water from the purification device 2 and conveying it to the cleaning device 1, and optionally conveying and stopping treated water. Can do. Further, the treated water pipe 4 is provided with a transparency sensor 51 as a purification degree sensor for measuring the degree of purification, a flow meter 52 for measuring the flow rate, and a pressure gauge 53 for measuring the pressure as the detection unit 5 described later. A circulation pipe is formed by the raw water pipe 3 and the treated water pipe 4.

  Next, the purification device 2 will be described. As shown in FIG. 2, the purification device 2 is mainly composed of a processing tank 21 and a filtration unit 22.

  The treatment tank 21 is for storing washing water, and the microorganisms are inhabited by introducing a lump of microorganisms called activated sludge in advance. The microorganism is preferably an aerobic bacterium, and further, a bacterium suitable for the decomposition treatment is preferably selected in accordance with the soil component (organic matter) contained in the washing water.

  As shown in FIG. 2, the filtration unit 22 is arranged in the treatment tank 21 to filter only clean water from the cleaning water stored in the treatment tank 21 as treated water. A large number of small sac-like units 22a each having a part or all of a filtration membrane and having a sealed space are formed side by side. The small unit 22a is provided with a communication portion 23 (tube in this embodiment) that communicates with the outside from a sealed space inside and leads out the internal treated water, and the communication portions 23 of many small units 22a are provided. The merging pipe 24 is joined to one merging pipe 24 and connected to the upstream end of the treated water pipe 4.

  Further, since oxygen is necessary for the decomposition treatment of the soil component by the microorganism, an aeration device is provided as the air supply unit 25 in the purification device 2. The aeration apparatus includes a blower 25a for sending air, an air supply pipe 25b that conveys air from the blower 25a, and an air diffusion pipe 25c that is provided at the downstream end of the air supply pipe 25b and diffuses air into the processing tank 21. Thus, oxygen is supplied to the microorganisms, and the filtration membrane of the small unit 22a of the filtration unit 22 is cleaned by bubbles from the air diffuser 25c.

  The basic operation of this purification system will be described. The raw water pump 31 is operated and the raw water valve 32 is opened to convey the raw water from the cleaning device 1 to the purification device 2. The raw water is stored in the treatment tank 21 of the purification device 2 and mixed with microorganisms. Microorganisms decompose soil components contained in raw water, for example, organic matter such as sugar, and the microorganisms themselves survive using the soil components as nutrient sources. The raw water is decomposed and removed by the microorganisms in the treatment tank 21, but the cleaning water stored in the treatment tank 21 is a mixed water of microorganisms and dirt components of the raw water not yet decomposed. Microorganisms and dirt components are filtered by the filtration membrane of the unit 22a, and only clean water passes through the sealed space inside, and clean water is led out by the communication portion 23 and conveyed to the treated water pipe 4. . At this time, the treated water is sucked into the treated water pipe 4 from the filtration unit 22 by being sucked from the downstream side by the treated water pump 41 of the treated water pipe 4 and is transported to the cleaning device 1.

  Purifying with this purification system provides high purification capability because it is decomposed by microorganisms, and it is not necessary to replace cleaning water over a long period of time. In this case, it is possible to suppress a decrease in production efficiency due to stopping the cleaning device 1.

  In addition, when recycling treated water that has been decomposed by microorganisms, even if microorganisms are mixed into the treated water, the contamination of the treated water is detected and the transport of the treated water to the cleaning device 1 is stopped to perform cleaning. In order to prevent the beverage container C from being contaminated by the washing water mixed with microorganisms in the apparatus 1, a detection unit 5 is provided in the treated water pipe 4.

  The detection unit 5 uses a purification degree sensor, uses a flow meter 52, uses a pressure gauge 53, or uses a combination of these, and will be described below.

  In the present embodiment, the purification degree sensor uses a transparency sensor 51 that measures the transparency of the treated water from the purification apparatus 2. In addition to the transparency sensor 51, the purification degree sensor may be a conductivity sensor that measures the conductivity of the treated water, a PH sensor that measures the pH (acidity) of the treated water, or the like.

  As shown in FIG. 3, the transparency sensor 51 measures the transparency by measuring the amount of light received from the light-emitting unit 51 a by the light-receiving unit 51 b, and is a small unit 22 a of the filtration unit 22. The filter membrane is detected to be broken by detecting a decrease in the transparency of the washing water due to filth such as microorganisms flowing out when the filter membrane is broken. In particular, in this embodiment, the gas-liquid separation pipe 43 is provided to prevent erroneous detection of the transparency sensor 51.

  As shown in FIG. 3, the gas-liquid separation pipe 43 is composed of an upper pipe 43a and a lower pipe 43b in which a part of the treated water pipe 4 branches up and down. A part of the lower pipe 43b is made of acrylic or the like. A transparent portion made of a transparent member is formed. The transparent portion has a cross-sectional shape having parallel surfaces facing each other in a direction perpendicular to the flow direction, and a light emitting portion 51a and a light receiving portion 51b of the transparency sensor 51 are provided on the parallel surfaces facing each other. If air bubbles are mixed in the treated water, the air bubbles flow through the upper upper pipe 43a in the gas-liquid separation pipe 43 and do not flow into the lower pipe 43b. This prevents erroneous measurement of transparency due to air bubbles. it can.

  Next, what uses the flowmeter 52 as the detection part 5 is demonstrated. When the filtration membrane of the filtration unit 22 is damaged, the resistance to the water flow of the treated water is reduced and the flow rate is increased. By providing the flow meter 52 for detecting an increase in the flow rate of the treated water in the treated water pipe 4, it can be considered that the filtration membrane is broken when a flow rate larger than the normal flow rate is measured. Further, when the filtration membrane of the filtration unit 22 is clogged, the resistance to the water flow of the treated water increases and the flow rate decreases. By detecting the decrease in the flow rate of the treated water in the treated water pipe 4 with the flow meter 52, the clogging of the filtration membrane can be detected.

  Next, what uses the pressure gauge 53 as the detection part 5 is demonstrated. When the filtration membrane of the filtration unit 22 is broken, the pressure loss in the filtration unit 22 is reduced, and the suction pressure of the treated water pump 41 sucked from the downstream side of the treated water pipe 4 is reduced. Here, a negative pressure gauge is used as the pressure gauge 53. Thereby, breakage of the filtration membrane can be detected. Further, when the filtration membrane of the filtration unit 22 is clogged, the pressure loss in the filtration unit 22 is increased, the suction pressure of the treated water pump 41 is increased, and the increase in the suction pressure is measured by the pressure gauge 53. Clogging of the filtration membrane can be detected.

  Also, a plurality of purification degree sensors, flow meters 52, and pressure gauges 53 as the detection unit 5 are combined (that is, the purification degree sensor and flow meter 52, or the flow meter 52 and pressure gauge 53, or the purification degree sensor and pressure gauge 53). (Or all of them) can be used for more accurate detection. By arranging the transparency sensor 51, the flow meter 52, and the pressure gauge 53 in series with the treated water pipe 4 as in the present embodiment, detection with higher accuracy becomes possible.

  When breakage or clogging of the filtration membrane is detected by the detection unit 5 described above, circulation of the cleaning water is stopped by a control unit (not shown).

  Moreover, in this embodiment, when the filtration membrane of the filtration unit 22 is damaged, a chemical injection device 6 is provided for sterilizing microorganisms (bacteria) mixed in the treated water and removing dirt components.

  The drug injection device 6 includes a drug tank 60 for storing a drug, a drug injection pipe 61 and a drug injection pump 62 for conveying the drug from the drug tank 60. Examples of the drug include sodium hypochlorite and sodium oxalate which can sterilize microorganisms and remove dirt components attached to the inner wall of the pipe, but are not particularly limited. The drug injection pipe 61 includes a drug injection pipe 61a for injecting a drug into the circulation pipe (treated water pipe 4) and a drug injection pipe 61b for injecting a drug into the purification device 2, each of which has a drug injection pump. 62a and 62b are provided.

  When the filtration membrane is damaged, the treated water mixed with microorganisms flows in the treated water pipe 4. Therefore, when the detection unit 5 detects the breakage of the filtration membrane, the medicine is passed from the medicine tank 60 through the medicine injection pipe 61 a. A chemical is injected from the chemical injection part 49 of the treated water pipe 4 by the injection pump 62a, microorganisms in the treated water flowing in the treated water pipe 4 are sterilized, and the beverage container C washed by the washing apparatus 1 is contaminated with microorganisms. Is prevented.

  In addition, when the filtration membrane is clogged, the clogging of the filtration membrane is detected by the detection unit 5 described above. At this time, the medicine is injected into the filtration unit 22 of the purification device 2. explain.

  The purifier 2 is provided with an elevated tank 20 in the upper part of the treatment tank 21, and a chemical injection pipe 61 b is connected to the elevated tank 20, so that the chemical is conveyed and stored in the elevated tank 20. An injection pipe 63 to the filtration unit 22 protrudes downward from the lower end of the elevated tank 20 and the lower end of the injection pipe 63 is connected to a merging pipe 24 from the filtration unit 22. In addition, a medicine discharge valve 64 is provided in the middle of the injection pipe 63, and a water stop valve 65 is provided on the downstream side of the joining pipe 24 where the lower end of the injection pipe 63 is connected. .

  Next, the operation will be described. First, the medicine is injected and stored in advance from the medicine tank 60 to the elevated tank 20 of the purification device 2 by the medicine injection pump 62b through the medicine injection pipe 61b. When the filter membrane is clogged and detected by the detection unit 5, the medicine discharge valve 64 is opened and the water stop valve 65 is closed. Then, the medicine flows down from the elevated tank 20 through the injection pipe 63. Since the elevated tank 20 is disposed above the processing tank 21, that is, above the filtration unit 22, the medicine from the elevated tank 20 is injected. From the pipe 63, it flows back into the small unit 22a through the junction pipe 24 and the communication portion 23 of the small unit 22a. Thereby, the dirt component which has caused clogging in the filtration membrane can be removed, and clogging can be eliminated.

It is a block diagram of one Embodiment of this invention. It is explanatory drawing of a purification apparatus. It is explanatory drawing of a gas-liquid separation piping and a transparency sensor, (a) is a side view, (b) is AA sectional drawing of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cleaning apparatus 2 Purification apparatus 21 Treatment tank 22 Filtration unit 3 Raw water piping 4 Treated water piping 5 Detection part

Claims (2)

The cleaning device includes a raw water pipe that conveys cleaning water to be purified from the cleaning device that circulates the cleaning water to the purification device that purifies the activated water using activated sludge, and a treated water pipe that returns the cleaning water purified by the purification device to the cleaning device. A treatment tank that stores cleaning water from the raw water piping and decomposes dirt components in the washing water by activated sludge microorganisms that are put into the purification apparatus, and cleaning the treatment tank. A purification unit that filters the water and returns the filtered wash water to the treated water piping, and detects a decrease in the purity of the washing water when the filtration membrane of the filtration unit is damaged in the treated water piping. comprising a detection portion provided, as well as configured by gas-liquid separation pipe consisting of the pipe and a lower pipe on which branches a part of the process water pipe vertically, transparency sensor as purification degree sensor to the lower pipe Purification system of the washing water in the washing apparatus, characterized by comprising providing a chromatography.   2. The cleaning water purification system for a cleaning apparatus according to claim 1, wherein a cross section of a portion to which the transparency sensor of the lower pipe of the gas-liquid separation pipe is attached has a parallel surface facing each other.

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