JP2021178292A - Cleaning mechanism of two-liquid mixer and cleaning method with use of cleaning mechanism - Google Patents

Abstract

To provide a cleaning mechanism which is so made as to be a simple configuration relating to cleaning of a two-liquid mixer, and can keep cleaning costs low, and can reduce environmental load, and a cleaning method.SOLUTION: A cleaning mechanism of a two-liquid mixer 1 for mixing two liquids comprises: a cleaning fluid tank 21 which accommodates water for cleaning the two-liquid mixer 1; a cleaning fluid pipe 18 which connects the cleaning fluid tank 21 and the two-liquid mixer 1; and air pipe 20 which connects an air supply source 22 and the two-liquid mixer 1 in order to supply air from the air supply source 22 to the two-liquid mixer 1. The cleaning fluid pipe 18 is provided with a heat exchanger 23 for heating water flown out from the cleaning fluid tank 21.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cleaning mechanism of a two-component mixing device for mixing relatively highly viscous two-components such as adhesives and paints, and a cleaning method using this cleaning mechanism.

Conventionally, in a two-component mixing device that mixes relatively highly viscous two-components such as two-component adhesives and paints, two-component introduction paths are connected to each other, and the inside of the two-component mixing device is passed through these introduction paths. The two liquids are introduced into. However, if the liquid in the two-component mixing device is left unattended after performing the two-component mixing operation, the mixture will be effective and the device will not operate, or the nozzle will be clogged. There was a risk of trouble.

Therefore, as shown in Patent Document 1, of the two liquids used in the two-component mixing device, only one non-curable liquid is introduced into the two-component mixing device to perform internal cleaning, and the first liquid can be discharged. A method for cleaning a two-component mixing device is already known.

Japanese Patent No. 3776616

However, in the invention described in Patent Document 1, since it is necessary to prepare an extra first liquid for cleaning the two-component mixing device, the cost is high, and the waste liquid must be recovered and safely treated after cleaning. Since it has to be done, it takes time and effort to dispose of the waste liquid, and it also puts a burden on the environment.

Therefore, the present invention is intended to solve the above-mentioned problems, and when cleaning the two-component mixing device, it has a simple configuration, the cleaning cost can be kept low, and the load on the environment is increased. It is intended to obtain a reducing cleaning mechanism and cleaning method.

The first invention of the present application is a cleaning mechanism of a two-liquid mixing device that mixes two liquids used in the cleaning method of the two-liquid mixing device of the second invention of the present application, wherein the first liquid and the first liquid are used. In the cleaning mechanism of the two-component mixing device for introducing different second liquids and mixing them internally, a cleaning liquid tank containing water for cleaning the two-component mixing device, the cleaning liquid tank, and the above two liquids. The cleaning liquid pipe is provided with a cleaning liquid pipe connecting the mixing device and an air pipe connecting the air supply source and the two-liquid mixing device in order to supply air to the two-liquid mixing device from the air supply source. Is equipped with a heat exchanger for heating the water flowing out of the cleaning liquid tank, and can supply hot water and air to the two-liquid mixing device.

Further, the second invention of the present application is a method for cleaning a two-liquid mixing device for introducing a first liquid and a second liquid different from the first liquid and mixing them internally. A cleaning liquid tank containing water for cleaning, a cleaning liquid tube equipped with a heat exchanger for connecting the cleaning liquid tank and the above-mentioned two-component mixing device and heating the water flowing from the cleaning liquid tank, and the above-mentioned two-component mixing. An air pipe for supplying air to the apparatus is provided, and the water flowing out from the cleaning liquid tank to the cleaning liquid pipe is heated by the heat exchanger, and the hot water heated by this heating and the air from the air pipe are heated. The first liquid, the second liquid, and the mixed liquid remaining in the two-liquid mixing device can be removed by alternately distributing them to the two-liquid mixing device and discharging the liquid from the two-liquid mixing device to the outside. It is a thing.

Further, the cleaning liquid pipe is provided with a cleaning liquid valve for controlling the flow of hot water heated by the heat exchanger, and the air pipe is provided with an air valve for controlling the flow of air in the air pipe. By opening and closing the air valve and the cleaning liquid valve, hot water from the liquid cleaning pipe and air from the air pipe may be selectively supplied to the two-liquid mixing device.

Further, the air pipe is inserted and arranged in the heat exchanger, and the air flowing out from the air supply source is heated by the heat exchanger so that hot air can be circulated to the two-liquid mixing device. You may.

As described above, the first and second inventions of the present application make it possible to wash the mixed liquid remaining in the two-liquid mixing device by supplying hot water to the two-liquid mixing device. Therefore, the viscous mixed liquid can be washed. Even if it remains in the two-component mixer, it can be easily removed with warm water, the cleaning cost can be kept low with a simple mechanism, and most of the waste liquid is water. The load on the environment can be reduced.

The conceptual diagram which shows Example 1 of the 1st and 2nd inventions of this application. 1 and 4 are partially enlarged cross-sectional views taken along the line AA. FIG. 2 is a sectional view taken along line BB in FIG. The conceptual diagram which shows Example 2 of the 1st and 2nd inventions of this application.

Hereinafter, an embodiment of the cleaning mechanism of the two-component mixer according to the first invention of the present application will be described in the drawings. As shown in FIG. 1, (1) is a two-component mixer, which is a two-component adhesive. , The curing agent such as paint and the main agent are mixed in the stirring mechanism (2), and the mixed liquid is discharged to the outside from the stirring mechanism (2).

In this two-component mixing device (1), a pair of introduction bodies (4) are projected and arranged on both sides of the device main body (3), and the stirring mechanism (2) is provided at the bottom of the device main body (3). It consists of. Then, as shown in FIG. 1, the stirring mechanism (2) is provided with a stirring shaft (5) that is connected to a rotating mechanism (not shown) and rotates in the axial direction, and the stirring shaft (5) is rotated. By moving it, the two liquids stored in the stirring mechanism (2) can be stirred. Further, at the lower end of the stirring mechanism (2), a nozzle (6) for discharging the liquid in the stirring mechanism (2) is provided.

Further, as shown in FIGS. .. Further, the introduction body (4) is provided with an introduction valve (8) capable of controlling communication with the communication passage (7). Further, an introduction port (10) that communicates with the outside is formed in the pair of introduction bodies (4), and one end (15) of a supply pipe (11) that enables hot water and air to flow is formed in this introduction port (10). ) Are connected respectively.

Further, as shown in FIG. 2, the device main body (3) is connected to supply and discharge the first liquid and the second liquid to the stirring mechanism (2) in the direction perpendicular to the pair of introduction bodies (4). The body (31) is connected and fixed.

An introduction pipe (12) that communicates with the liquid storage tank (not shown) to the connection body (31) so that the first liquid and the second liquid can be supplied from the storage tank to the device main body (3). ) And the recirculation pipe (13) for recirculating the first liquid and the second liquid that are not supplied to the device main body (3) to the storage tank, respectively. As shown in FIG. 2, the connecting body (31) can communicate with the communication passage (7) of the apparatus main body (3) via the liquid valve (14) provided in the connecting body (31).

Further, as shown in FIG. 1, each pair of supply pipes (11) having one end connected to the introduction port (10) of the introduction body (4) has one convergence pipe (17) on the other end (16) side as shown in FIG. ). Further, the other end side of the converging pipe (17) is branched into a cleaning liquid pipe (18) for supplying the cleaning liquid and an air pipe (20) for supplying air. Then, the tip of the cleaning liquid pipe (18) is inserted and arranged in the cleaning liquid tank (21), and the tip of the air pipe (20) is connected to the air supply source (22).

Further, the cleaning liquid pipe (18) is provided with a heat exchanger (23), and a cleaning liquid valve (23) capable of controlling the flow of the cleaning liquid between the heat exchanger (23) and the converging pipe (17). 24) is provided. In the heat exchanger (23) of this embodiment, the outer periphery of the cleaning liquid tube (18) is covered with the heating body (25), so that the heating body (25) flows through the cleaning liquid tube (18). It is possible to heat the water to make hot water.

The air pipe (20) is provided with an air valve (26) that can control the flow of air. Further, the air supply valve (27) is provided in the air pipe (20), and the air pipe (20) is connected to the cleaning liquid tank (21) between the air supply valve (27) and the air valve (26). An air branch valve (30) is provided in the air branch pipe (28) branched to the side.

Next, the cleaning method of the second invention of the present application using the cleaning mechanism of the two-component mixing device (1), which is an embodiment of the first invention of the present application, will be described below. First, after using the two-liquid mixing device (1), the liquid valve (14) of the connection body (31) is closed, and the introduction valve (8) provided in the pair of introduction bodies (4) is opened. Keep it.

In addition, water is stored in the cleaning liquid tank (21), and the heat exchanger (23) provided in the cleaning liquid pipe (18) is operated. Further, the air supply valve (27), the air branch valve (30), the cleaning liquid valve (24) of the cleaning liquid pipe (18), and the air valve (26) of the air pipe (20) are closed in advance.

First, the air supply valve (27) and the air branch valve (30) are opened, and water is circulated from the cleaning liquid tank (21) to the cleaning liquid pipe (18) by pressurizing the air. As a result, the water flowing through the cleaning liquid pipe (18) is heated when it passes through the heat exchanger (23), and the water that has passed through the heat exchanger (23) is transferred as hot water in the direction of the cleaning liquid valve (24). Will be done.

Then, by opening the cleaning liquid valve (24), the hot water is transferred to the pair of supply pipes (11) via the converging pipe (17). Then, the hot water transferred to the pair of supply pipes (11) is transferred into the introduction body (4) through the introduction port (10). Since the introduction valve (8) is opened as described above, the hot water is transferred into the communication passage (7) of the apparatus main body (3) via the introduction valve (8). ..

Then, as shown in FIG. 3, the hot water circulated in the communication passage (7) is supplied to the stirring mechanism (2). Then, by agitating the hot water supplied into the stirring mechanism (2) by operating the stirring shaft (5), the inside of the stirring mechanism (2) is washed with the hot water. Then, the hot water in the stirring mechanism (2) is discharged to the outside through the nozzle (6) while being stirred.

By washing with warm water as described above, the first liquid, the second liquid, and the mixed liquid remaining in the communication passage (7) and the stirring mechanism (2) of the apparatus main body (3) are washed away with warm water. It will be discharged to the outside. Further, after cleaning with warm water as described above for a certain period of time, cleaning with air is performed. Explaining this air cleaning, the cleaning liquid valve (24) is closed and the air valve (26) is opened.

As a result, the air supplied from the air supply source (22) is transferred to the supply pipe (11) via the air valve (26) and the converging pipe (17). Then, the air supplied to the supply pipe (11) is transferred into the introduction body (4) through the introduction valve (8) and the introduction port (10) of the introduction body (4). After that, the air is discharged to the outside from the nozzle (6) through the stirring mechanism (2).

By cleaning with air as described above, the liquid remaining in the communication passage (7) and the stirring mechanism (2) when cleaning with warm water is transferred together with the air and discharged from the nozzle (6). It will be.

Then, after cleaning with air as described above for a certain period of time, cleaning with warm water is performed again. In this way, cleaning with hot water and cleaning with air are performed alternately, and finally, the liquid remaining in the communication passage (7) and the stirring mechanism (2) is discharged by the air, and the above-mentioned device main body (3) is introduced. Cleaning is completed by drying the inside of the body (4).

As described above, by supplying hot water to the two-component mixing device (1) using the cleaning mechanism of the present invention, the first solution, the second solution, and the mixture thereof remaining in the two-component mixing device (1) are supplied. Can be washed. Therefore, even if a viscous mixture remains in the two-component mixing device (1), it can be easily removed with warm water, and the cleaning cost can be kept low by a simple mechanism. Furthermore, since most of the waste liquid is water, the burden on the environment can be kept low.

Hereinafter, if Example 2 of the cleaning mechanism of the two-component mixing device according to the first invention of the present application is described in the drawings, as shown in FIG. 2, (1) is a two-component mixing device, which is a two-component adhesive. , The curing agent such as paint and the main agent are mixed in the stirring mechanism (2), and the mixed liquid is discharged to the outside from the stirring mechanism (2).

In this two-component mixing device (1), a pair of introduction bodies (4) are projected and arranged on both sides of the device main body (3), and the stirring mechanism (2) is provided at the bottom of the device main body (3). It consists of. Then, as shown in FIG. 4, the stirring mechanism (2) is provided with a stirring shaft (5) that is connected to a rotating mechanism (not shown) and rotates in the axial direction, and the stirring shaft (5) is rotated. By moving it, the two liquids stored in the stirring mechanism (2) can be stirred. Further, at the lower end of the stirring mechanism (2), a nozzle (6) for discharging the liquid in the stirring mechanism (2) is provided.

Further, as shown in FIGS. .. Further, the introduction body (4) is provided with an introduction valve (8) capable of controlling communication with the communication passage (7). Further, an introduction port (10) that communicates with the outside is formed in the pair of introduction bodies (4), and one end (15) of a supply pipe (11) that enables hot water and air to flow is formed in this introduction port (10). ) Are connected respectively.

Further, as shown in FIG. 2, the device main body (3) is connected to supply and discharge the first liquid and the second liquid to the stirring mechanism (2) in the direction perpendicular to the pair of introduction bodies (4). The body (31) is connected and fixed.

An introduction pipe (12) that communicates with the liquid storage tank (not shown) to the connection body (31) so that the first liquid and the second liquid can be supplied from the storage tank to the device main body (3). ) And the recirculation pipe (13) for recirculating the first liquid and the second liquid that are not supplied to the device main body (3) to the storage tank, respectively. As shown in FIG. 2, the connecting body (31) can communicate with the communication passage (7) of the apparatus main body (3) via the liquid valve (14) provided in the connecting body (31).

Further, as shown in FIG. 4, each pair of supply pipes (11) having one end connected to the introduction port (10) of the introduction body (4) has one convergence pipe (17) on the other end (16) side as shown in FIG. ). Further, the other end side of the converging pipe (17) is branched into a cleaning liquid pipe (18) for supplying the cleaning liquid and an air pipe (20) for supplying air. Then, the tip of the cleaning liquid pipe (18) is inserted and arranged in the cleaning liquid tank (21), and the tip of the air pipe (20) is connected to the air supply source (22).

Further, the cleaning liquid pipe (18) is provided with a heat exchanger (23), and a cleaning liquid valve (23) capable of controlling the flow of the cleaning liquid between the heat exchanger (23) and the converging pipe (17). 24) is provided. As described above, in the heat exchanger (23) of the present embodiment, by covering the outer periphery of the cleaning liquid pipe (18) with the heating body (25), the inside of the cleaning liquid tube (18) is covered with the heating body (25). The water circulating in the water can be heated to make hot water.

Further, as shown in FIG. 4, an air pipe (20) is inserted and arranged in the heating body (25) of the heat exchanger (23). By inserting and arranging the air pipe (20) in the heating body (25) in this way, it is possible to heat the air flowing in the air pipe (20) with the heating body (25) to obtain warm air. It becomes. A cleaning liquid valve (24) that can control the flow of the cleaning liquid is provided between the heat exchanger (23) and the convergence pipe (17).

The air pipe (20) is provided with an air valve (26) that can control the flow of air. Further, the air pipe (20) is provided with an air supply valve (27) as shown in FIG. 4, and the air pipe (20) is provided between the air supply valve (27) and the air valve (26). An air branch valve (30) is provided in the air branch pipe (28) branched from the cleaning liquid tank (21) side.

Next, the cleaning method of the second invention of the present application using the cleaning mechanism of the two-component mixing device (1) which is the second embodiment of the first invention of the present application will be described below. First, after using the two-liquid mixing device (1), the liquid valve (14) of the connection body (31) is closed, and the introduction valve (8) provided in the pair of introduction bodies (4) is opened. Keep it.

In addition, water is stored in the cleaning liquid tank (21), and the heat exchanger (23) provided in the cleaning liquid pipe (18) is operated. Further, the air supply valve (27), the air branch valve (30), the cleaning liquid valve (24) of the cleaning liquid pipe (18), and the air valve (26) of the air pipe (20) are closed in advance.

First, the air supply valve (27) and the air branch valve (30) are opened, and water is circulated from the cleaning liquid tank (21) to the cleaning liquid pipe (18) by pressurizing the air. As a result, the water flowing through the cleaning liquid pipe (18) is heated when it passes through the heat exchanger (23), and the water that has passed through the heat exchanger (23) is transferred as hot water in the direction of the cleaning liquid valve (24). Will be done.

Then, by opening the cleaning liquid valve (24), the hot water is transferred to the pair of supply pipes (11) via the converging pipe (17). Then, the hot water transferred to the pair of supply pipes (11) is transferred into the introduction body (4) through the introduction port (10). Since the introduction valve (8) is opened as described above, the hot water is transferred into the communication passage (7) of the apparatus main body (3) via the introduction valve (8). ..

Then, as shown in FIG. 3, the hot water circulated in the communication passage (7) is supplied to the stirring mechanism (2). Then, by agitating the hot water supplied into the stirring mechanism (2) by operating the stirring shaft (5), the inside of the stirring mechanism (2) is washed with the hot water. Then, the hot water in the stirring mechanism (2) is discharged to the outside through the nozzle (6) while being stirred.

By washing with warm water as described above, the first liquid, the second liquid, and the mixed liquid remaining in the communication passage (7) and the stirring mechanism (2) of the apparatus main body (3) are washed away with warm water. It will be discharged to the outside. Further, after cleaning with warm water as described above for a certain period of time, cleaning with air is performed. Explaining this air cleaning, the cleaning liquid valve (24) is closed and the air valve (26) is opened.

As a result, the air supplied from the air supply source (22) passes through the heat exchanger (23) and is supplied as warm air. Then, this warm air is transferred to the supply pipe (11) via the air valve (26) and the converging pipe (17). Then, the warm air supplied to the supply pipe (11) is transferred into the introduction body (4) through the introduction valve (8) and the introduction port (10) of the introduction body (4). After that, the warm air is discharged to the outside from the nozzle (6) through the stirring mechanism (2).

By cleaning with warm air as described above, the liquid remaining in the communication passage (7) and the stirring mechanism (2) when cleaning with warm water is transferred together with the hot air from the nozzle (6). It will be discharged.

Then, after washing with warm air as described above for a certain period of time, washing with warm water is performed again. In this way, cleaning with hot water and cleaning with warm air are performed alternately, and finally, the liquid remaining in the communication passage (7) and the stirring mechanism (2) is discharged by the warm air, and the above-mentioned device main body (3) is discharged. , Cleaning is completed by drying the inside of the introduced body (4).

As described above, by supplying hot water and hot air to the two-component mixing device (1) using the cleaning mechanism of the present invention, the first liquid and the second liquid remaining in the two-component mixing device (1). And its mixture can be washed. Therefore, even if a viscous mixture remains in the two-component mixer (1), it can be easily removed with hot water and warm air, and the cleaning cost can be kept low by a simple mechanism. Furthermore, since most of the waste liquid is water, the burden on the environment can be kept low.

1 Two-liquid mixing device 18 Cleaning liquid pipe 20 Air pipe 21 Cleaning liquid tank 22 Air supply source 23 Heat exchanger 24 Cleaning liquid valve 26 Air valve

Claims (6)

In the cleaning mechanism of the two-component mixing device for introducing the first liquid and the second liquid different from the first liquid and mixing them internally, a cleaning liquid containing water for cleaning the two-component mixing device. The tank, the cleaning liquid pipe connecting the cleaning liquid tank and the two-component mixing device, and the air supply source and the two-component mixing device for supplying air to the two-component mixing device from the air supply source are connected. The cleaning liquid pipe is provided with a heat exchanger for heating the water flowing out of the cleaning liquid tank, and hot water and air can be circulated to the two-liquid mixing device. Cleaning mechanism of liquid mixer. A cleaning method for a two-component mixing device for introducing a first liquid and a second liquid different from the first liquid and mixing them internally, and is a cleaning liquid containing water for cleaning the two-liquid mixing device. To connect the tank, the cleaning liquid tank, and the two-component mixing device, and to supply air to the cleaning liquid tube equipped with a heat exchanger for heating the water flowing from the cleaning liquid tank and the two-component mixing device. An air pipe is provided, and the water flowing out from the cleaning liquid tank to the cleaning liquid pipe is heated by the heat exchanger, and the hot water heated by this heating and the air from the air pipe are alternately transferred to the two-liquid mixing device. The two-liquid mixing is characterized in that the first liquid, the second liquid, and the mixed liquid remaining in the two-liquid mixing device can be removed by distributing the liquid and discharging the liquid from the two-liquid mixing device to the outside. How to clean the equipment. The cleaning liquid pipe is provided with a cleaning liquid valve for controlling the flow of hot water heated by the heat exchanger, and the air pipe is provided with an air valve for controlling the flow of air in the air pipe. The cleaning mechanism for the two-component mixing device according to claim 1, wherein the two-component mixing device is provided. The cleaning liquid pipe is provided with a cleaning liquid valve for controlling the flow of hot water heated by the heat exchanger, and the air pipe is provided with an air valve for controlling the flow of air in the air pipe. 2. How to clean the two-component mixer. The heat exchanger is characterized by having the air pipe inserted and arranged, and the air flowing out from the air supply source is heated by the heat exchanger so that hot air can be circulated to the two-liquid mixing device. The cleaning mechanism for the two-component mixing device according to claim 1 or 3. An air pipe is inserted and arranged in the heat exchanger, and the air flowing out from the air supply source is heated by the heat exchanger so that hot air can be circulated to the two-liquid mixing device. The method for cleaning the two-component mixing device according to claim 2 or 4.

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