JPH06126255A - Washer - Google Patents

Abstract

PURPOSE:To provide a washer where washing liquid is used by circulation while fat and oil content, etc., contained in the liquid after use is effectively separated and removed. CONSTITUTION:A washing tank 1, an oil separating tank 2 for separating fat and oil content, etc., in washing liquid which overflows the washing tank 1 to flow in it, a storage tank 3 in which the washing liquid after deprived of oil and fat content, etc., in the oil separating tank 2 flows and liquid circulating piping 4 for returning the washing liquid in the storage tank 3 to the washing tank 1 are provided. The oil separating tank 2 has at least one, preferably two or more separating tanks 6a, 6b. The separating tanks 6a, 6b, in which the washing liquid overflowing the tank on the upstream side flows, are divided into a floating separation part 7 for floating and separating the fat and oil content, etc., in the washing liquid and an overflow part 8 for making the washing liquid overflow to the tank on the downstream side and simultaneously the floating separation part 7 and the overflow part 8 communicate with each other at the lower part of the tank.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning device suitable for cleaning various metal parts, plastic parts and the like.

[0002]

2. Description of the Related Art Conventionally, as a cleaning device for metal parts, plastic parts, etc., an ultrasonic method, a jet jet method,
Various types of devices such as an air (bubble) supply system and a wash water stirring system are known. In these conventional devices, the object to be cleaned is immersed in a cleaning tank containing a cleaning liquid for cleaning, and the used cleaning liquid is discarded after removing oil and fat and solids by a filtering device or the like.

By the way, recently, a detergent (commercial name "Dynamax") having an extremely excellent detergency, which is made of a plant substance as a raw material, has been developed. This cleaning agent has a very strong effect of separating oils and fats, etc., and in the diluted liquid, dirt such as oils and fats attached to the object to be cleaned can be separated in a short time, and the separated oils and fats are condensed and floated on the cleaning liquid surface. Moreover, unlike the conventional detergents, the fats and oils are hardly emulsified in the liquid, so that there is a great advantage that the fats and oils can be separated and the cleaning liquid can be repeatedly used.

[0004]

Generally, the conventional cleaning liquid is rarely used repeatedly because the oil and fat content is emulsified in the liquid when used once. For this reason, each of the above-mentioned conventional cleaning devices also has a device configuration that presupposes that the cleaning liquid is discarded after each cleaning, and it is premised that the cleaning liquid is circulated and the oil and fat content contained in the liquid is contained. A cleaning device capable of efficiently separating and removing such substances has not been developed yet. In view of such a situation, the present invention is an apparatus capable of circulating and using a cleaning liquid while efficiently separating and removing oils and fats contained in the liquid, and in particular, excellent cleaning power and oil and fat as described above. It is an object of the present invention to provide a cleaning device suitable for the case where a cleaning agent having a minute flotation effect is used.

[0005]

In order to achieve such an object, the device of the present invention has the following structure. (1) A cleaning tank, an oil / water separation tank for separating oil / fat and the like in a cleaning liquid flowing from the cleaning tank, a storage tank into which the cleaning liquid after the oil / fat and the like are removed in the oil / water separation tank flows in, A liquid circulation pipe for returning the cleaning liquid in the storage tank to the cleaning tank, the cleaning tank having a configuration for overflowing the cleaning liquid into the oil / water separation tank, and the cleaning liquid overflowing from the cleaning tank flows into the oil / water separation tank. Then, the cleaning is divided into a floating separation part for floating and separating the oil and fats in the cleaning liquid and an overflow part for overflowing the cleaning liquid into the storage tank, and the floating separation part and the overflow part communicate with each other at the bottom of the tank. apparatus.

(2) A cleaning tank, an oil-water separation tank for separating oils and fats and the like in the cleaning liquid flowing from the cleaning tank, and a storage tank into which the cleaning liquid after the oils and fats and the like are removed in the oil-water separation tank flows And a liquid circulation pipe for returning the cleaning liquid in the storage tank to the cleaning tank, the oil / water separation tank is composed of two or more separation tanks in which the cleaning liquid sequentially flows, and the cleaning tank is an oil / water separation tank. A floating separation unit configured to overflow the cleaning liquid into the separation tank on the most upstream side, and the cleaning liquid overflowing from another tank on the upstream side flows into each of the separation tanks and floats and separates fats and oils in the cleaning liquid. And an overflow section for overflowing the cleaning liquid into another tank on the downstream side, and the floating separation section and the overflow section communicate with each other at the bottom of the tank.

(3) A cleaning device according to the above (1) or (2), which has a filtering device in the middle of the liquid circulation pipe or in the middle of the bypass pipe provided in the liquid circulation pipe. As a cleaning mechanism applied to the cleaning tank, any known mechanism such as a conventionally known ultrasonic system, jet jet system, air (bubble) supply system, cleaning water agitation system and the like can be used.

[0008]

The cleaning liquid is put in the cleaning tank, the object to be cleaned is immersed in the cleaning liquid, and cleaning is performed by ultrasonic waves or jet jets. Oils and fats separated from the object to be cleaned by the action of the cleaning agent float to the surface of the cleaning liquid, overflow with the cleaning liquid from the cleaning tank, and flow into the floating separation section of the oil-water separation tank, where the oils and fats are floated and separated. . The cleaning liquid in the floating separation unit flows into the overflow unit through the lower communication unit, rises inside the overflow unit, and overflows into the storage tank. The cleaning liquid in the storage tank is returned to the cleaning tank through the liquid circulation pipe and is used for circulation.

Further, the cleaning liquid sequentially flows through the oil-water separation tank 2
In the apparatus having the above separation tank, the cleaning liquid containing the oil and fats and the like overflowing from the cleaning tank first flows into the floating separation section of the separation tank on the most upstream side, where the oil and fats and the like are floated and separated. The cleaning liquid in the flotation separation section flows into the overflow section through the lower communication section, rises inside the overflow section, overflows into the next separation tank, and the same floating separation of oil and fat is performed as described above. In this way, the cleaning liquid is removed of fats and oils during the process of sequentially flowing through the two or more separation tanks. The cleaning liquid overflowing from the most downstream separation tank flows into the storage tank,
The cleaning liquid in the storage tank is returned to the cleaning tank through the liquid circulation pipe and is used for circulation.

The oil and fat components floated and separated in the oil / water separation tank are discharged outside the tank by an appropriate means such as an oil drain hole or a suction device. Further, the cleaning liquid is extracted out of the system as needed, and is sent to, for example, a treatment device such as activated sludge water treatment. Further, in a cleaning device provided with a filtering device in the middle of the liquid circulation pipe or in the middle of a bypass pipe provided in the liquid circulation pipe, the circulating cleaning liquid is filtered by the filtering device, and solid contents, impurities, and harmful substances contained in the liquid are filtered. Etc. are removed. When the filtration device is provided in the liquid circulation pipe itself, the cleaning liquid is constantly filtered, while when the filtration device is provided through the bypass pipe, the cleaning liquid flows to the bypass pipe as necessary. Then, the liquid is filtered.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which a cleaning device comprises a cleaning tank 1 in which an object to be cleaned is placed, and an oil / water separation tank for separating oils and fats in a cleaning liquid flowing from the cleaning tank. Two
And a storage tank 3 into which the cleaning liquid after the oil and fats and the like have been removed in the oil / water separation tank flows in, and a liquid circulation pipe 4 for returning the cleaning liquid in the storage tank to the cleaning tank. The cleaning tank 1 is
In this embodiment, an ultrasonic cleaning mechanism is provided, and an ultrasonic oscillator 5 is provided at the bottom of the tank. Also,
The cleaning tank 1 has an outlet 10 at its upper part for overflowing the cleaning liquid into the oil / water separation tank 2.

The oil-water separation tank 2 is provided with a floating separation unit 7 into which the cleaning liquid overflowing from the cleaning tank 1 flows and separates the oil and fats contained in the cleaning liquid, and an overflow unit 8 to overflow the cleaning liquid into the storage tank 3. Partitioned,
The floating separation section 7 and the overflow section 8 communicate with each other at the bottom of the tank. In the figure, reference numeral 11 is an opening for allowing the cleaning liquid to flow from the overflow section 8 to the storage tank 3 side. One end of the liquid circulation pipe 4 is connected to a liquid discharge part 16 provided in the storage tank 3 so as to face the bottom of the tank so that the solid matter settled in the storage tank can be sucked and discharged. A circulation pump 12 is provided in the middle of the liquid circulation pipe 4, and a pipe device between the circulation pump 12 and the storage tank 3 is provided with a filtering device 13 via a bypass pipe 14. The filtering device 13 may be provided in the liquid circulation pipe 4 itself.

A pipe 15 for discharging the cleaning liquid to the outside of the system (water treatment device or the like) is connected to the circulation pump 12. In addition, in other drawings, 17 is a shutoff valve, 18 is a circulation pump space,
The filter device 13 is housed in the circulation pump space 18. In addition, a heater for heating the cleaning liquid can be provided inside the cleaning tank 1 and the storage tank 3 in order to enhance the cleaning effect and the action of separating oil and fat. An electric heater, a steam pipe, or the like can be used as this heater.

FIGS. 2 to 4 show another embodiment of the present invention, in which the oil / water separation tank 2 is composed of a plurality of separation tanks in which the cleaning liquid sequentially flows. In this cleaning device, the cleaning liquid overflowing from the outflow port 10 of the cleaning tank 1 is configured to flow into the upstreammost separation tank (separation tank 6a described below) that constitutes the oil / water separation tank 2.

The oil / water separation tank 2 is composed of two separation tanks 6a and 6b in which the cleaning liquid sequentially flows. To each of the separation tanks 6a and 6b, the cleaning liquid overflowing from the upstream tanks (that is, the cleaning tank 1 for the separation tank 6a and the separation tank 6a for the separation tank 6b) flows into the separation tanks 6a and 6b, and the oil and fat content in the cleaning liquid, etc. Is separated into a levitation separation unit 7 for floating and separating the cleaning liquid and an overflow unit 8 for overflowing the cleaning liquid into a downstream tank (that is, the separation tank 6b for the separation tank 6a and the storage tank 3 for the separation tank 6b). The separation section 7 and the overflow section 8 communicate with each other at the bottom of the tank. In the figure, 11a and 11b are openings for allowing the cleaning liquid to flow out from the overflow section 8 to the downstream tank.

In order to ensure the floating separation of oils and fats and the like, the oil / water separation tank 2 may be composed of three or more separation tanks in which the cleaning liquid sequentially flows. Other configurations are shown in FIG.
Since it is the same as the embodiment shown in, the same reference numerals are given and the description thereof is omitted.

FIG. 5 shows another embodiment of the present invention.
The cleaning mechanism in the cleaning tank 1 is of a jet jet type. That is, a plurality of injection nozzles 19 are arranged at the bottom of the cleaning tank 1, and the liquid circulation piping 4 is connected to the injection nozzles 19 so that cleaning is performed using the circulating cleaning liquid. Since the other construction is the same as that of the embodiment shown in FIGS. 2 to 4, the same reference numerals are given and the description thereof is omitted.

Next, the operation of the above embodiment will be described with reference to FIGS.
The cleaning tank 1 is filled with a cleaning liquid, and an object to be cleaned placed in a basket or the like is immersed in the cleaning liquid. Then, the object to be cleaned is cleaned by the oscillation of ultrasonic waves from the ultrasonic oscillator 5. Note that FIG.
In the apparatus shown in (1), the cleaning liquid supplied from the liquid circulation pipe 4 is sprayed from the spray nozzle 19 to clean the object to be cleaned.

The fats and oils separated from the object to be cleaned due to the action of the cleaning agent float to the cleaning liquid surface of the cleaning tank 1. The cleaning liquid is
With this floating oil and fat, etc., the outlet 10 at the upper part of the cleaning tank
Flow into the flotation separation section 7 of the first separation tank 6a, and the oil and fat components in the cleaning liquid are floated and separated in the flotation separation section 7. The cleaning liquid in the floating separation unit 7 flows into the overflow unit 8 from the communication unit 9 in the lower part of the tank and rises inside the overflow unit 8 to open the opening 1
It overflows from 1a and flows into the floating separation section 7 of the second separation tank 6b. In this separation tank 6b as well, the floating separation of the oils and fats and the like is performed in the same manner as above, and the cleaning liquid from which the oils and fats and the like have been almost completely removed is passed through the communicating portion 9, the overflow portion 8 and the opening 11b to the storage tank 3. Inflow. The cleaning liquid in the storage tank 3 is sucked from the liquid discharge unit 16 by the circulation pump 12 and returned to the cleaning tank 1 through the liquid circulation pipe 4. In addition, the cleaning liquid is extracted from the system through the pipe 15 as necessary and sent to a water treatment device such as an activated sludge water treatment device. Normally, the replenishment of the cleaning liquid (or water and cleaning agent) into the system is carried out in the storage tank 3.

The oil and fat components floated and separated by the flotation / separation unit 7 of each separation tank are discharged to the outside of the tank by an appropriate means such as an oil drain hole or a suction device. Further, if necessary, the cleaning liquid extracted from the storage tank 3 is caused to flow through the bypass pipe 14 by operating the shutoff valve 17, and the solid content, impurities, harmful substances and the like in the cleaning liquid are removed by the filtering device 13. It is preferable to regulate the flow rate of the cleaning liquid circulating in the system in order to prevent the floating of the oil and fats in each separation tank from being disturbed by the circulation of the cleaning liquid.

[0021]

According to the apparatus of the present invention described above, the cleaning liquid can be circulated and used while efficiently removing the separated fats and oils, and in particular, the excellent cleaning power described above can be obtained. It is extremely suitable as a cleaning device using a cleaning agent having a condensing and floating action of oil and fat. Further, in an apparatus in which the oil / water separation tank is composed of two or more separation tanks in which the cleaning liquid sequentially flows, the separation of oils and fats and the like in the cleaning liquid can be carried out very efficiently and reliably, and there is a particularly excellent effect.

[Brief description of drawings]

FIG. 1 is a vertical sectional view schematically showing an embodiment of the device of the present invention.

FIG. 2 is a vertical sectional view schematically showing another embodiment of the device of the present invention.

FIG. 3 is a perspective view of the apparatus of the embodiment shown in FIG.

FIG. 4 is a plan view of the apparatus of the embodiment shown in FIG.

FIG. 5 is a vertical sectional view schematically showing another embodiment of the device of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Washing tank, 2 ... Oil-water separation tank, 3 ... Storage tank, 4 ... Liquid circulation piping, 5 ... Ultrasonic transmitter, 6a, 6b ... Separation tank, 7 ... Flotation separation part, 8 ... Overflow part, 9 ... Communication Part, 10 ...
Outflow port, 11, 11a, 11b ... Opening, 12 ... Circulation pump, 13 ... Filtration device, 14 ... Bypass pipe, 15 ... Pipe, 16 ... Liquid discharge part, 19 ... Injection nozzle

Claims (3)

[Claims] 1. A cleaning tank, an oil / water separation tank for separating oil / fat and the like in a cleaning liquid flowing from the cleaning tank, and a storage tank into which the cleaning liquid flows after the oil / fat and the like are removed in the oil / water separation tank. ,
A liquid circulation pipe for returning the cleaning liquid in the storage tank to the cleaning tank, the cleaning tank having a configuration for overflowing the cleaning liquid into the oil / water separation tank, and the oil / water separation tank is provided with a cleaning liquid overflowing from the cleaning tank. It is divided into a levitation separation section that flows in and floats and separates oils and fats in the cleaning solution, and an overflow section that overflows the cleaning solution into a storage tank, and the levitation separation section and the overflow section are in communication at the bottom of the tank. Cleaning device. 2. A cleaning tank, an oil / water separation tank for separating oil / fat and the like in a cleaning liquid flowing from the cleaning tank, and a storage tank into which the cleaning liquid after the oil / fat and the like are removed in the oil / water separation tank flows in. ,
A liquid circulation pipe for returning the cleaning liquid in the storage tank to the cleaning tank, the oil / water separation tank is composed of two or more separation tanks in which the cleaning liquid sequentially flows, and the cleaning tank is the uppermost stream forming the oil / water separation tank. The cleaning solution overflows into the separation tank on the side, each of the separation tanks, the cleaning solution overflowing from the other tank on the upstream side flows in, and a flotation separation section for floating and separating the fats and oils in the cleaning solution, A cleaning device which is partitioned into an overflow section for overflowing the cleaning liquid into another tank on the downstream side, and the levitation separation section and the overflow section communicate with each other in the lower section of the tank. 3. The cleaning device according to claim 1, further comprising a filtering device in the liquid circulation pipe or in a bypass pipe provided in the liquid circulation pipe.