JP3853300B2 - Pipe cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe cleaning apparatus.
[0002]
[Prior art and problems to be solved by the invention]
2. Description of the Related Art Conventionally, there has been proposed a pipe cleaning apparatus (hereinafter referred to as a conventional example) for cleaning a pipe to be cleaned, for example, a cooling water circulation pipe disposed in a mold or an injection molding machine.
[0003]
This conventional example is connected to the cooling water inlet of the pipe to introduce the cleaning liquid into the pipe and the cleaning liquid introduced to the cooling water outlet of the pipe to derive the cleaning liquid that has passed through the pipe. The cleaning liquid outlet pipe material and a circulation mechanism that circulates the cleaning liquid through a cleaning liquid circulation path formed by the pipe, the cleaning liquid introduction pipe material, and the cleaning liquid outlet pipe material by driving a drive motor.
[0004]
However, when the present applicant actually tried this conventional example, it was confirmed that the dirt could not be removed well by simply circulating the cleaning liquid. Various attempts have been made in the past to improve the cleaning effect, such as using a powerful drive motor to strengthen the water flow, or providing a heater to warm the cleaning solution. In addition, there is a problem in installation workability and cost that the apparatus itself becomes large and complicated.
[0005]
The present applicant pays attention to the above-mentioned problems, and as a result of repeating various experiments and researches, has developed a pipe cleaning apparatus that exhibits an unprecedented effect.
[0006]
[Means for Solving the Problems]
The gist of the present invention will be described with reference to the accompanying drawings.
[0007]
A pipe cleaning apparatus for supplying a cleaning liquid W into a pipe 1 to be cleaned and cleaning the inside of the pipe 1. The cleaning liquid storage container 2 for storing the cleaning liquid W has a cleaning liquid stored in the cleaning liquid storage container 2. A container 3 that is in an immersive state is provided in W, and this container 3 is provided with a pneumatic feeding section 4 that can pump air into the container 3. Further, the container 3 is filled with the cleaning liquid W in the container 3. A cleaning liquid introducing section 6 with a first on-off valve 5 to be introduced, and a cleaning liquid outlet section 8 with a second on-off valve 7 connected to the pipe 1 to which the cleaning liquid W in the container 3 is to be led out and cleaned are provided. 4, when the inside of the container 3 is pressurized, the first on-off valve 5 is closed and the second on-off valve 7 is opened, so that the cleaning liquid W in the container 3 is led out from the cleaning liquid outlet 8 and is supplied with pneumatic pressure. When the inside of the container 3 is not pressurized by the portion 4, the second on-off valve 7 A pipe cleaning apparatus characterized in that the cleaning liquid W in the cleaning liquid storage container 2 is introduced into the container 3 from the cleaning liquid introduction part 6 in a state where the first on-off valve 5 is closed and opened. It is concerned.
[0008]
The pipe cleaning apparatus according to claim 1, wherein a plurality of the containers 3 are provided in the cleaning liquid storage container 2, and the cleaning liquid W is separately introduced from each cleaning liquid outlet 8 into the pipe 1 to be cleaned. The present invention relates to a pipe cleaning apparatus.
[0009]
[Action and effect of the invention]
The applicant of the present invention has the reason that the cleaning effect of the above-described conventional example is insufficient. If the cleaning liquid is simply circulated by driving the drive motor, a constant flow is generated in the pipe (the flow of the cleaning liquid W is Focusing on the fact that the cleaning liquid W actually flows in the pipe 1 in a state where it is difficult to remove the dirt, in the center of the pipe, and is late in the vicinity of the inner wall surface where the dirt in the pipe is attached) From this, it was found that a good cleaning effect can be obtained by changing the flow of the cleaning liquid W.
[0010]
Therefore, the present applicant repeatedly conducted various experiments and researches from this viewpoint, and as a result, completed the present invention that was extremely innovative.
[0011]
In the present invention, when the inside of the container 3 is pressurized by the pneumatic feeding part 4 when cleaning the pipe 1 to be cleaned, the first on-off valve 5 is closed and the second on-off valve 7 is opened, and the cleaning liquid W in the container 3 is opened. However, the cleaning liquid W is supplied from the cleaning liquid outlet 8 into the pipe 1 to be cleaned.
[0012]
Further, when the air pressure feeding section 4 is opened without pressure by the air pressure feeding section 4 (when the inside of the container 3 is depressurized), the second on-off valve 7 is closed and the first on-off valve 5 is opened to store the cleaning liquid. The cleaning liquid W in the container 2 is introduced into the container 3 from the cleaning liquid introducing unit 6.
[0013]
Accordingly, the cleaning liquid W can be supplied into the pipe 1 to be cleaned, and the flow of the cleaning liquid W can be changed by repeatedly pressurizing and depressurizing the container 3 by the pneumatic feeding unit 4 (cleaning liquid Therefore, the cleaning effect can be drastically improved as compared with the conventional example. Further, as the power for supplying the cleaning liquid W, the pressure by the pneumatic feeding unit 4 can be increased. Since the structure uses pressure, it is possible to easily and reliably change the flow of the cleaning liquid W described above.
[0014]
That is, if the drive motor according to the conventional example tries to change the flow of the cleaning liquid W as described above, the operation and the stop are repeated, but in fact, it is difficult to control the drive motor itself. Of course, when such an operation is performed, the drive motor burns out immediately, which is not realistic.
[0015]
In this respect, the present invention creates the flow of the cleaning liquid W by the air pressure feeding (pressurization in the container 3) by the air pressure feeding section 4, so that the above-mentioned problem is caused even if the operation and the stop are repeated, for example. There is no concern about the occurrence (the pneumatic feeding section 4 can perform good intermittent air pressure feeding), and the flow of the cleaning liquid W can be surely changed to obtain a good cleaning effect. Since light weight, downsizing and simplification are surely achieved, the installation workability and cost are excellent.
[0016]
As described above, the present invention exhibits an epoch-making action and effect that has not been achieved so far, and has extremely high commercial value.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
The drawings illustrate one embodiment of the present invention and are described below.
[0018]
In this embodiment, the cleaning liquid W is supplied into the pipe 1 to be cleaned to clean the inside of the pipe 1. In this embodiment, the pipe 1 to be cleaned is a cooling water circulation pipe disposed in a mold or an injection molding machine. However, any pipe 1 that can exhibit the characteristics of this embodiment will be described. This can also be applied to the simple piping 1.
[0019]
Specifically, as shown in FIG. 1, a bottomed rectangular tube-shaped case main body 11 having a moving caster is provided at the lower portion, and the main body 11 is made of an appropriate metal, and a predetermined amount of cleaning liquid W is placed inside. The cleaning liquid storage container 2 can be stored. Reference numeral 12 denotes a drain for discharging the cleaning liquid W.
[0020]
The cleaning liquid storage container 2 is provided with an openable / closable lid 13 at an upper opening thereof so that the cleaning liquid W can be stored by opening the openable / closable lid 13. In addition, a control unit for controlling a pneumatic feeding unit 4 to be described later is disposed in the opening / closing lid 13.
[0021]
In addition, the cleaning liquid storage container 2 is provided with a pair of containers 3 having the same structure at a position where the cleaning liquid W is stored at a lower position inside the cleaning liquid storage container 2.
[0022]
As shown in FIG. 1, the container 3 is formed by forming an appropriate synthetic resin member in a hollow case shape, and is provided in a suspended state on a mounting member 14 installed inside the cleaning liquid storage container 2. It has been. Therefore, the container 3 is immersed in the cleaning liquid W when the cleaning liquid W is stored in the cleaning liquid storage container 2.
[0023]
The container 3 is connected to a pneumatic feeding section 4 at the top thereof.
[0024]
The pneumatic feeding unit 4 is configured by connecting a pneumatic feeding device 16 (air pump) to a proximal end portion of a tubular member 15 connected to the upper portion of the container 3 as shown in FIGS. Air is constantly pumped from the pneumatic feeding device 16, and a supply electromagnetic valve 17 is provided in the middle of the tubular member 15, and the supply electromagnetic valve 17 is controlled by the control unit 18 to control the inside of the container 3. In addition, the discharge solenoid valve 19 is provided in the middle of the tubular member 15, and the discharge solenoid valve 19 is controlled by the control unit 18 to control the discharge in the container 3. Compressed air is discharged. In this embodiment, the supply solenoid valve 17 and the discharge solenoid valve 19 are disposed in the above-described opening / closing lid 13, and the tubular member 15 is further provided with a quick exhaust valve 20 that achieves forced exhaust. Is provided.
[0025]
Therefore, the pressure inside the container 3 can be increased to a high pressure by pumping air into the container 3 by the pneumatic feeding section 4, and the high pressure state in the container 3 stops the pumping of the air and the discharge solenoid valve 19 is turned on. When opened, the compressed air is discharged by the water pressure of the cleaning liquid W, and the inside of the container 3 is depressurized.
[0026]
In addition, the container 3 is provided with a cleaning liquid introduction part 6 for introducing the cleaning liquid W in the cleaning liquid storage container 2 at the lower part thereof.
[0027]
As shown in FIGS. 1 to 3, the cleaning liquid introducing section 6 is formed by opening a predetermined position below the container 3, and a first opening / closing valve 5 for opening and closing the valve hole 6 a formed by the opening is provided. It has been.
[0028]
The first on-off valve 5 is formed of an appropriate metal member. When the inside of the container 3 is at a high pressure by the pneumatic feeding portion 4, the first on-off valve 5 is lowered to close the valve hole 6 a to remove the cleaning liquid W. When the introduction is prevented and the inside of the container 3 is depressurized, the check valve structure is configured to float by the water pressure of the cleaning liquid W and open the valve hole 6a to allow the cleaning liquid W to be introduced.
[0029]
In addition, the container 3 is provided with a cleaning liquid lead-out part 8 for leading the cleaning liquid W in the container 3 at a lower part of the container 3 at a position different from the cleaning liquid introduction part 6.
[0030]
The cleaning liquid outlet 8 is formed by forming a tubular portion 21 through which the cleaning liquid W flows at a predetermined position below the container 3, and the tubular opening 21 is provided with a second opening / closing valve 7.
[0031]
The second on-off valve 7 includes a spherical member 22 that can close the valve hole 21 a of the tubular portion 21 and a biasing member 23 that biases the spherical member 22. When the inside is at a high pressure, the spherical member 22 moves against the biasing member 23 to open the valve hole 21a to permit the discharge of the cleaning liquid W, and when the inside of the container 3 is depressurized, the biasing is performed. The spherical member 22 is configured as a check valve structure that can block the valve hole 21a by the urging of the member 23 to prevent the cleaning liquid W from being led out.
[0032]
Further, the tubular portion 21 is provided with a tubular connection portion 9 connected to the distal end opening portion of the pipe 1 to be cleaned, and the pressure inside the container 3 is increased by the pneumatic feeding portion 4, and the cleaning liquid W is supplied from the cleaning liquid outlet portion 8. When derived, the cleaning liquid W is supplied into the pipe 1 to be cleaned through the connecting portion 9.
[0033]
Further, in this embodiment, a return pipe member 24 connected to the proximal end opening of the pipe 1 to be cleaned is provided, and the distal end portion of the return pipe member 24 is connected to the filter unit 25 in the cleaning liquid storage container 2. Yes.
[0034]
Accordingly, the used cleaning liquid W that has passed through the pipe 1 to be cleaned and passed through the return pipe member 24 passes through the filter unit 25 and is stored in the cleaning liquid storage container 2, and is reused as the cleaning liquid W again. .
[0035]
A pipe cleaning operation using the pipe cleaning apparatus according to the present embodiment having the above configuration will be described.
[0036]
Connect the pipe 1 to be cleaned. Specifically, a connecting portion 9 extending from the container 3 is connected to the distal end opening of the pipe 1 to be cleaned, and a return pipe 24 extending from the cleaning liquid storage container 2 to the proximal end opening of the piping 1 to be cleaned. Connect. An appropriate cleaning liquid W is stored in advance in the cleaning liquid storage container 2, and the cleaning liquid W is also filled in the container 3.
[0037]
First, when this apparatus is operated, air is pumped into the one container 3 from the pneumatic feeding section 4 and the cleaning liquid W is led out from the cleaning liquid deriving section 8, and the cleaning liquid W led out from the one container 3 is connected. It is supplied to the pipe 1 to be cleaned through the section 9.
[0038]
Subsequently, when the pressurization by the air pressure feeding unit 4 into the one container 3 is stopped and the compressed air is exhausted, the derivation of the cleaning liquid W from the cleaning liquid deriving unit 8 is stopped, and one container from the cleaning liquid introducing unit 6 is stopped. The cleaning liquid W is introduced into 3. At the same time that the cleaning liquid W is introduced into the one container 3, air is pumped from the pneumatic feeding section 4 into the other container 3, and the cleaning liquid W is led out from the cleaning liquid outlet section 8. The cleaning liquid W led out from the inside is supplied to the pipe 1 to be cleaned through the connecting portion 9.
[0039]
Subsequently, when the pressurization by the pneumatic feeding section 4 into the other container 3 is stopped and the compressed air is exhausted, the derivation of the cleaning liquid W from the cleaning liquid deriving section 8 is stopped, and the other container from the cleaning liquid introducing section 6 is stopped. The cleaning liquid W is introduced into 3. At this time, the cleaning liquid W is led out in one container 3.
[0040]
As described above, the cleaning liquid W is sequentially supplied into the pipe 1 to be cleaned by repeating the lead-in / out of the alternating cleaning liquid W in the pair of containers 3, and the flow of the cleaning liquid W supplied in this way is pulsating. Changes are made to do.
[0041]
Further, if the control method of the present apparatus described above is changed and the inside of the container 3 is emptied by increasing the time of air pressure feeding in one container 3, air will be introduced into the connecting portion 9, and therefore By mixing air into the cleaning liquid W, an action that further disturbs the flow of the cleaning liquid is generated, and a good cleaning effect is obtained. In this way, by continuing to pump air into the container 3, It is possible to completely extrude the liquid in the pipe 1 to be cleaned.
[0042]
Since the present embodiment is configured as described above, the cleaning liquid W can be supplied into the pipe 1 to be cleaned, and the pressurization / depressurization of the container 3 by the air pressure feeding unit 4 is repeatedly performed. The flow can be changed (the flow is in a pulsating state), so that the cleaning effect can be dramatically improved as compared with the conventional example, and the cleaning liquid W is further supplied. As the power to be used, the structure uses the pressurization by the pneumatic feeding section 4, so that the above-described flow of the cleaning liquid W can be easily and reliably changed, and a good cleaning effect can be obtained. Since light weight, downsizing and simplification are surely achieved, the installation workability and cost are excellent.
[0043]
Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.
[Brief description of the drawings]
FIG. 1 is an explanatory cross-sectional view showing a present embodiment.
FIG. 2 is a schematic explanatory diagram of a main part according to the present embodiment.
FIG. 3 is a circuit diagram showing the present embodiment.
[Explanation of symbols]
W Cleaning liquid 1 Pipe 2 to be cleaned Cleaning liquid storage container 3 Container 4 Pneumatic feed part 5 First on-off valve 6 Cleaning liquid introduction part 7 Second on-off valve 8 Cleaning liquid outlet part

Claims (2)

A pipe cleaning apparatus for supplying cleaning liquid into a pipe to be cleaned and cleaning the inside of the pipe, wherein the cleaning liquid storage container for storing the cleaning liquid is immersed in the cleaning liquid stored in the cleaning liquid storage container The container is provided with an air pressure feeding section capable of pumping air into the container, and further, the container is provided with a cleaning liquid introducing section with a first on-off valve for introducing the cleaning liquid into the container and the container. A cleaning liquid outlet with a second on-off valve connected to the pipe to be cleaned and connected to the pipe to be cleaned is provided. When the valve is opened and the cleaning liquid in the container is led out from the cleaning liquid outlet and the container is not pressurized by the pneumatic feeder, the second on-off valve is closed and the first on-off valve is opened. Cleaning the cleaning liquid storage container There pipe cleaning apparatus characterized by being configured to be introduced into the container body from the cleaning liquid introduction section. 2. The pipe cleaning apparatus according to claim 1, wherein a plurality of the containers are provided in the cleaning liquid storage container, and the cleaning liquid is separately introduced from each cleaning liquid outlet to a pipe to be cleaned. Piping cleaning equipment.

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