JPH0515861A - Waste water treating device for washing device - Google Patents

Abstract

PURPOSE:To attain a waste water treatment without discharging waste water at times exclusive of the time when a washing liquid is exchanged by the degradation in washing capacity. CONSTITUTION:The atm. taken into an atm. heating chamber 41 by a fan 41b is heated by a heater 41a and is supplied through a concentrated liquid supplying chamber 42 into a separating chamber 43. On the other hand, the washing water of a washing device 10 is dispersed and supplied into the separating chamber 43 by a shower pipe 44a. Tellerette, etc., are packed into the separating chamber 43 where the washing water is brought into contact with the heating atm. to evaporate the moisture in the washing water with the heating atm. The washing water is thereby separated to the concentrated liquid of the detergent and steam. The water drops and mists of the steam are respectively removed by a water drop removing filter 45a and a mist removing filter 45b and the steam is released into the atm. The concentrated liquid is returned into the washing device 10 by a concentrated liquid supplying chamber 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste water treatment device used for a cleaning device for cleaning processed products such as resin molded products without using CFCs.

[0002]

2. Description of the Related Art Conventionally, when a surface of a processed product such as a resin molded product obtained by a predetermined process is subjected to a post-treatment, unnecessary substances adhering to the surface of the processed product are removed before the post-treatment. Although cleaning is performed, CFCs are generally used for this cleaning because they are harmless, nonflammable, and inexpensive.

However, since CFCs destroy the ozone layer, CFCs have been regulated internationally since 1989.
There is an urgent need to develop CFC-free cleaning.

Therefore, in order to prevent the use of CFCs in cleaning, an aqueous solution type cleaning agent or an organic solvent type cleaning agent is used as an alternative cleaning agent for CFCs.

[0005]

However, in the cleaning using the above-mentioned cleaning agent, washing with water for removing the cleaning liquid adhering to the processed product after washing is indispensable, and therefore a large amount of wastewater generated by washing with water is required. Disposal (processing) becomes a problem.

The present invention has been made in view of the above problems of the prior art, and it is possible to perform wastewater treatment for a cleaning device without discarding the wastewater except when the cleaning liquid is replaced due to deterioration of the cleaning ability. The purpose is to provide a device.

[0007]

In order to achieve the above object, the present invention is intended to take in the atmosphere outside the structure to heat the lower part of the structure and to forcibly supply the heated atmosphere upward. While having an atmospheric heating unit, at the upper part of the structure, a steam discharge unit for discharging steam to the outside of the structure, and between the atmospheric heating chamber and the steam discharge unit of the structure, Detergent water supply means for dispersing and discharging downwardly the water containing the cleaning agent, which is supplied from a cleaning device for cleaning unnecessary substances adhering to the surface with cleaning water, and provided below the detergent water supply means. Further, the water containing the cleaning agent supplied from above is brought into contact with the heated atmosphere supplied from below with a large surface area, and the water containing the cleaning agent is converted into the water vapor and the concentrated solution of the cleaning agent. The packing for separation and the filling A separation unit, which is provided below the object via a partition member having a large number of openings, communicates with the atmospheric heating unit and includes a concentrated liquid supply unit that returns the concentrated liquid of the cleaning agent to the cleaning device. It is characterized by having.

Further, the water vapor discharging section may have a water droplet removing filter for removing water droplets and a mist removing filter for removing mist in order to remove the liquid component from the water vapor separated by the separating section.

Further, the cleaning agent is for removing the release agent of the resin molded product, and may have a property that the cleaning ability does not change even when diluted or concentrated.

[0010]

The water containing the cleaning agent supplied from the cleaning device is dispersed and discharged from above the filling material by the detergent water supply means,
The water containing the cleaning agent flows down along the surface of the filling material. On the other hand, the outside atmosphere is heated by the atmosphere heating chamber and then is forcibly supplied upward and reaches the packing through the concentrated liquid supply unit. Since the water containing the cleaning agent flows down along the surface of the filling material, the water containing the cleaning agent and the heated atmosphere come into contact with each other with a large surface area, so that the water containing the cleaning agent evaporates its water content. Then, the water vapor and the concentrated liquid are separated.

Then, the concentrated liquid drops into the concentrated liquid supply unit and is returned to the cleaning device, and at the same time, the water vapor reaches the water vapor discharge unit and is discharged to the outside from the water vapor discharge unit.

Further, by providing a water drop removing filter or a mist removing filter in the water vapor releasing portion, the water vapor is released to the outside after its liquid component is removed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic configuration diagram showing a CFC-less cleaning device using an embodiment of the wastewater treatment device of the present invention.

This CFC-less cleaning device is a cleaning device 10.
And a concentrating device 40 which is an embodiment of the wastewater treatment device of the present invention
Consists of. First, the cleaning device 10 will be described. The cleaning device 10 includes the following components.

(1) First degreasing tank 11 and first recovery tank 1
2. Second degreasing tank 13 and second recovery tank 14 These tanks are a cleaning water cleaning step of cleaning the unnecessary mold release agent adhering to the surface of a resin molded product as a processed product with cleaning water. It is provided to do. As a resin molded product to be washed, it is used in the paper discharge part of the laser beam printer "LBP-B406" manufactured by Canon Inc.,
A transport guide 50 (see FIG. 2) made of ABS (acrylic, butyl, styrene), a separation claw 60 (see FIG. 3) made of PPS (polyphenylene sulfide), and the like are used. Here, in the first degreasing tank 11, as a cleaning agent, “P
₃ Grato 20 "(manufactured by Henkel Hakusui Co., Ltd.) is filled with cleaning water (temperature: about 55 ° C, cleaning agent concentration: 4%), and the mold release agent adhering to the surface of the resin molded product is washed first. belongs to. The first recovery tank 12 is for cleaning the cleaning agent adhering to the surface of the resin molded product cleaned in the first degreasing tank 11 with water and recovering it. The second degreasing tank 13 is filled with cleaning water containing a cleaning agent (temperature of about 55 ° C., cleaning agent concentration 2%), and the surface of the resin molded product washed with water in the first recovery tank 12 It is for re-cleaning the release agent remaining in. The second recovery tank 14 is for cleaning the cleaning agent adhering to the surface of the resin molded product cleaned in the second degreasing tank 13 with water and recovering it.

The resin-formed product to be washed is not limited to the conveyance guide 50 shown in FIG. 2 and the separation claw 60 shown in FIG. 3, but is made of a resin material used in copying machines, printers and facsimiles. It may be a guide, a paper feed / discharge guide, an exterior plate, a separation claw, an operation button, a plastic lens, or the like. In addition to ABS (acrylic butyl styrene) and PPS (polyphenylene sulfide) described above, PC (polycarbonate), PPO (polyphenylene oxide), acrylic resin, fluororesin, PUR (polyurethane), PP ( It may be polypropylene), PE (polyethylene), PVC (vinyl chloride), EP (epoxy resin) and PA (polyamide).

As the cleaning agent, the above-mentioned "P ₃ g
rato20 "In addition to the [Henkel white water (Ltd.), as well Henkel white water (Ltd.) of P ₃ series of" LT5600
5 "," Siliron 41 "," EP-680 ",
"Saxin", "Upon" and "P3-T18"
It can be used as long as the cleaning ability does not change even when diluted or concentrated, such as "0".

(2) First washing tank 15 and second washing tank 1
6 and pure water tank 17 These tanks are provided for performing a water washing step of washing the resin molded product washed in the washing water washing step with water.
The cleaning agent remaining on the surface of the resin molded product washed with water in the second recovery tank 14 is washed with water.

(3) Draining tank 18 The draining tank 18 is provided to perform a draining process for draining the resin molded product washed in the water washing process, and the surface of the resin molded product washed in the pure water tank 17 is removed. Remove the pure water adhering to.

(4) Drying Tank 19 The drying tank 19 is provided for performing a drying process of the resin molded product drained in the draining process, and the resin molded product from which pure water has been removed is dried in the draining tank 18. To do.

(5) Tank 20 and first pump 21 The tank 20 and the first pump 21 are provided to reuse the waste water generated in the washing and draining steps in the washing water washing step. Here, the tank 20 is for temporarily storing the waste water discharged from the first washing tank 15 and the draining tank 18. Further, the first pump 21 is for supplying the waste water in the tank 20 to the first recovery tank 12 and the second recovery tank 14.

(6) Second Pump 22 The second pump 22 cleans the water containing the cleaning agent (hereinafter referred to as "detergent water") from the second degreasing tank 13 for cleaning the concentrator 40 which will be described later. It is for supplying to the water supply chamber 44.

Next, the structure of the concentrating device 40 will be described. The concentrating device 40 separates the detergent water generated from the washing water washing step into a detergent concentrate and steam, reuses the detergent concentrate in the washing water wash step, and releases the vapor to the atmosphere. It is for.

A fan 41b is provided in the atmosphere heating chamber 41 provided in the lower portion of the structure, and the suction side of the fan 41b communicates with the outside of the atmosphere heating chamber 41 via the heater 41a. The discharge side of the fan 41b communicates with a concentrated liquid supply chamber 42 provided above the atmosphere heating chamber 41 via a discharge pipe extending upward.

The concentrated liquid supply chamber 42 is a separation chamber 43 described later.
It receives the concentrated solution of the cleaning agent separated from the detergent water in (1) and returns it to the second degreasing tank 13 of the cleaning apparatus 10.

A separation chamber 43 is provided above the concentrated liquid supply chamber 42. The concentrated liquid supply chamber 42 and the separation chamber 43 are
It is partitioned by a partition plate as a partition member in which small holes as a large number of openings are dispersedly formed. Further, in the separation chamber 43, there is a filler (not included) for contacting the atmosphere heated by the atmosphere heating chamber 41 and supplied to the separation chamber 43 with the detergent water supplied by the shower pipe 44a described later with a large surface area. (Shown). As the filling,
"M type terraret" [manufactured by Nittetsu Kakoki Co., Ltd.] or the like is used.

A detergent water supply chamber 44 is provided above the separation chamber 43.
Is provided. The detergent water supply chamber 44 has a shower tube 44a as a detergent water supply means, and the second pump 2
The detergent water sent from the second degreasing tank 13 by 2 is evenly dispersed in the shower pipe 44a and supplied to the lower separation chamber 43.

The concentrated liquid supply chamber 42, the separation chamber 43, and the detergent water supply chamber 44 described above constitute a separation section.

Above the detergent water supply chamber 44, there is provided a water vapor releasing chamber 45 as a water vapor releasing portion, which is provided with a water droplet removing filter 45a and a mist removing filter 45b. The water vapor releasing chamber 45 removes water droplets. Filter 45
The detergent water supply chamber 44 and the outside are communicated with each other through a and the mist removal filter 45b. Here, as the water drop removing filter 45a, "Sunloid eliminator" [registered trademark, manufactured by Tsutsunaka Plastic Industry Co., Ltd.] or the like is used,
"Saran lock" as the mist removal filter 45b
[Registered trademark, manufactured by Asahi Dow Co., Ltd.] and the like are used.

Next, the wastewater treatment process by the concentrating device 40 of this embodiment will be described.

The detergent waste water sent from the second degreasing tank 13 of the cleaning apparatus 10 is separated into the separation chamber 43 by the shower pipe 44a.
Are distributed and supplied.

On the other hand, the atmosphere outside the concentrating device 40 (temperature 2
The temperature of 5 ° C. and the humidity of 60% is heated to a temperature of about 60 ° C. by the heater 41a, and then the heated atmosphere (hereinafter,
It is called "heated atmosphere". ) Is forcibly sent to the concentrated liquid supply chamber 42 by the fan 41a and further reaches the separation chamber 43. In the separation chamber 43, the above-mentioned "M type terraret"
Since the filler water (not shown) is filled with the detergent water, the detergent water flows down along the surface of the filler, and as a result, the detergent water obtains a large surface area and comes into contact with the heated atmosphere. When the heated atmosphere passes through the surface of the filling in which the detergent water flows down, the detergent water obtains heat of evaporation from the heated atmosphere to evaporate the moisture, and the detergent water is separated into the concentrated liquid of the detergent and the steam. The concentrated liquid separated from the detergent water drops into the concentrated liquid supply chamber 41 through the small holes (not shown) of the partition plate, and is returned to the second degreasing tank 13 of the cleaning device 10. Further, the water vapor separated from the detergent water passes through the detergent water supply chamber 44, reaches the water vapor release chamber 45, and is released into the atmosphere from the outlet of the water vapor release chamber 45. At this time, the water droplets and the mist contained in the water vapor are removed by the water droplet removing filter 45a and the mist removing filter 45b, respectively, and the temperature is 40 ° C.
It becomes steam with a humidity of 100% and is released into the atmosphere.

In this CFC-less cleaning device, pure water is supplied to the pure water tank 17 from the outside, pure water is supplied from the pure water tank 17 to the second water washing tank 16, and first water is supplied from the second water washing tank 16 to the first water washing tank 16. Pure water is supplied to the water washing tank 15. Pure water containing a small amount of cleaning agent is supplied from the first recovery tank 12 to the first degreasing tank 11, and the second recovery tank 1 is supplied to the second degreasing tank 13.
By supplying pure water containing a small amount of cleaning agent from 4,
Even if the number of times of cleaning progresses, the first and second degreasing tanks 11 and 13
Prevents the internal washing water from running out. Further, first to third liquid level sensors 31 to 33 are attached to the first degreasing tank 11, the second degreasing tank 13 and the tank 20, respectively, to prevent overflow of washing water and the like. There is.

As described above, in the CFC-less cleaning device, the waste water discharged from the first cleaning tank 15 and the draining tank 18 is temporarily stored in the tank 20, and then the first and second recovery tanks 1 are used.
It is supplied to the second and the second degreasing tanks 13, and the detergent water discharged from the second degreasing tank 13 is separated into a concentrated liquid of the cleaning agent and water vapor by the concentrating device 40, and then harmless water vapor is released into the atmosphere, which is used for washing Wastewater treatment of large amounts of water is not a problem.

In this embodiment, the case where the separating agent adhering to the surface of the resin-formed product is washed with the washing water has been described. However, the washing device using the wastewater treatment device of the present invention can be applied to the surface of a product such as glass. It can also be applied when cleaning unnecessary substances such as oil and dust that have adhered to the.

[0037]

Since the present invention is configured as described above, it has the following effects.

The water containing the cleaning agent supplied from the cleaning apparatus and the atmosphere heated in the atmosphere heating chamber are brought into contact with each other over a large surface area due to the filling material, whereby the water containing the cleaning agent is converted into the cleaning agent. It is separated into a concentrated liquid and steam. And
By returning the concentrated liquid to the cleaning device and releasing the water vapor into the atmosphere, it is possible to perform wastewater treatment in the form of water vapor that does not adversely affect the environment without discarding the water containing the cleaning agent. it can. Further, since the concentrated liquid of the cleaning agent is returned to the cleaning device and reused, the cleaning agent can be effectively used.

Further, by providing a water drop removing filter and a mist removing filter in the water vapor releasing section, the water vapor can be released into the atmosphere after completely removing the liquid component contained in the water vapor.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a CFC-less cleaning device using an embodiment of a wastewater treatment device of the present invention.

FIG. 2 is a perspective view of a conveyance guide that is an example of a resin molded product that is cleaned by the fluorocarbon cleaning device shown in FIG.

FIG. 3 is a perspective view of a separation claw that is another example of a resin molded product that is cleaned by the Florence cleaning device shown in FIG.

[Explanation of symbols]

10 Cleaning device 11 First degreasing tank 12 First collection tank 13 Second degreasing tank 14 Second recovery tank 15 First flush tank 16 Second washing tank 17 Pure water tank 18 drainage tank 19 drying tank 20 tanks 21 first pump 22 Second pump 31 First Liquid Level Sensor 32 Second liquid level sensor 33 Third Liquid Level Sensor 40 Concentrator 41 Atmosphere heating chamber 41a heating heater 41b fan 42 Concentrate supply room 43 Separation room 44 Detergent water supply room 44a shower tube 45 Water vapor release chamber 45a Water Drop Removal Filter 45b Mist removal filter 50 Transport guide 60 separate nails

Claims (3)

[Claims] 1. An atmosphere heating unit is provided at a lower portion of the structure for taking in and heating an atmosphere outside the structure and forcibly supplying the heated atmosphere to an upper side, and an upper portion of the structure is provided with an atmosphere heating unit. There is a water vapor discharge part that discharges water vapor to the outside of the structure, and between the atmosphere heating chamber of the structure and the water vapor discharge part, for cleaning unnecessary substances adhering to the surface of the processed product with cleaning water. Detergent water supply means for dispersing and discharging downwardly the water containing the detergent supplied from the cleaning device; and the water containing the detergent supplied from above, which is provided below the detergent water supply means. A packing for contacting the heated atmosphere supplied from below with a large surface area to separate the water containing the cleaning agent into the water vapor and the concentrated solution of the cleaning agent, and below the packing. , A partition member with multiple openings A wastewater treatment device for a cleaning device, characterized in that it has a separating part that is provided in communication with the atmospheric heating part and that comprises a concentrated liquid supply part that returns the concentrated liquid of the cleaning agent to the cleaning device. . 2. The water vapor releasing section has a water droplet removing filter for removing water droplets and a mist removing filter for removing mist in order to remove a liquid component from the water vapor separated by the separating section. Wastewater treatment equipment for cleaning equipment as described. 3. The cleaning agent is for removing a release agent attached to the surface of a resin molded product, and has a property that the cleaning ability does not change even when diluted or concentrated. , Wastewater treatment equipment for cleaning equipment.