JPH0667400U - Foam feeder - Google Patents

Abstract

(57) [Summary] [Purpose] When a bubble is generated from a liquid such as a sealant and the bubble is supplied to a required supply area thoroughly, fluctuation of the bubble density is suppressed as much as possible to stabilize the supply of the liquid. Try to make it happen. A gas supply pipe 3 for supplying a gas for inducing bubbling into the liquid L is stored in a container 1 in which a liquid L capable of foaming is contained in a state less than full and a space 2 above the liquid surface is formed. While being attached, bubbles generated from the liquid L are collected by the bubbling, and a bubble collection space 5 communicating with the bubble discharge part 4 is formed inside, and the bubbles are discharged through the bubble collection space 5. . Further, a partition means A is provided in a part of the liquid level space 2 to partially form the bubble collection space 5 regardless of the liquid level change caused by the bubble discharge.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a foam supply device, and more particularly, to a container in which a liquid capable of foaming is contained in a state in which the liquid is less than full and a space above the liquid surface is formed in the liquid supply device. A gas supply pipe for supplying gas is attached, and bubbles generated from the liquid are collected by the bubbling, and a bubble collection space leading to a bubble discharge part is formed inside, and bubbles generated from the liquid are The present invention relates to a foam supply device configured to be freely discharged via a foam collection space.

[0002]

[Prior art]

 For example, it is necessary to thoroughly perform treatments such as sealing and cleaning on the inner parts of exposed pipes of gas, concealed pipes, and buried pipes (particularly the inner part of the pipe where the operator's hands and equipment cannot reach from the outside). In this case, it becomes necessary to thoroughly supply a liquid such as a liquid sealing agent or a cleaning liquid to the inner portion of the pipe where the sealing, cleaning or the like needs to be performed. At this point, it is generally difficult to supply the liquid to the upper part and the left and right side parts (particularly, the upper part) of the inner part of the pipe, because the liquid tends to constantly drip downward due to gravity. However, it is usually necessary to supply the above-mentioned liquid thoroughly to each of these parts. Therefore, the sealing agent and the liquid for the cleaning liquid are supplied to the inside of the pipe without fail by using a conventional foam supply device shown in FIG. 8 (hereinafter referred to as a conventional device). That is, in the case of the conventional device, the liquid L 1 such as the sealant and the cleaning liquid is contained in the container 1, and bubbles from the liquid L (hereinafter, not only the outer shell but also the inner space are referred to as bubbles) are continued. The liquid L, which has been turned into the outer shell of the bubbles, is sequentially fed into the pipe while being generated, so that the liquid L is supplied to the pipe inner portion vertically and horizontally. By the way, in the conventional device, the above-mentioned liquid L is contained in the container 1 in a state of being less than full, so that the above-liquid level space 2 is formed. Further, gas for inducing bubbling is supplied into the liquid L via the gas supply pipe 3. Further, bubbles start to be continuously generated from the liquid L based on the bubbling, and the liquid L that has become the outer shell of the bubbles is discharged to the outside of the container 1 via the bubble collection space 5 and the like. It is supposed to be done. In the conventional device, the liquid level space 2 and the bubble collecting space 5 are formed in the same space.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional apparatus, when the liquid L that has been formed into the outer shell of bubbles is gradually discharged to the outside of the container 1 via the bubble collection space 5 and the like, the amount of the liquid L contained in the container 1 gradually increases. As a result, the size of the space 2 above the liquid surface gradually increases. Further, since the above-liquid level space 2 and the above-mentioned bubble collecting space 5 are configured in the same space, as the size of the above-liquid level space 2 increases, The size will also increase. In this way, if the size of the bubble collection space 5 is increased, even if the operating conditions of the conventional device (for example, the condition of foam generation based on the bubbling) are kept constant, Since the size changes greatly as described above, the retention time before the bubbles are discharged to the outside of the container 1 becomes long, and the bubbles are discharged to the outside of the container 1 via the bubble collection space 5 due to the change over time in the shape of the bubbles. There has been a problem that the density of bubbles formed (in other words, foaming volume and foaming weight) fluctuates greatly. The present invention has been made by paying attention to such an actual situation, and when generating bubbles from the liquid and supplying the bubbles to the supply-necessary place thoroughly, the density fluctuation of the bubbles is suppressed as much as possible, and It is an object of the present invention to provide a means capable of ensuring a stable supply of liquid to a necessary place.

[0004]

[Means for Solving the Problems]

 A bubble supply device according to the present invention (hereinafter, referred to as a device of the present invention) induces bubbling into a liquid in a container in which a liquid capable of foaming is contained in a state less than full and a space above the liquid surface is formed inside. A gas supply pipe for supplying a gas for use is attached, and bubbles generated from the liquid are collected by the bubbling, and a bubble collection space leading to a bubble discharge part is formed inside, and bubbles generated from the liquid are A foam supply device configured to be freely discharged via a foam collection space, wherein the partition means partially forms the foam collection space in a part of the liquid level upper space irrespective of the liquid level change due to foam discharge. It has a feature in that is provided.

[0005]

[Action]

 In the device of the present invention, the partition means for partially forming the bubble collection space is provided in a part of the liquid level space, and therefore the presence of the partition means prevents the liquid level from changing due to bubble discharge. The rate of increase of the bubble collection space can be suppressed as low as possible.

[0006]

[Effect of device]

 Therefore, according to the device of the present invention, when the bubbles are generated from the liquid in the container and the bubbles are sent out of the container in order to supply the liquid to the necessary supply points, the fluctuation in the density of the bubbles causes the bubbles to change. By suppressing the growth rate of the collection space, it will be kept as low as possible. Therefore, the supply of the liquid to the necessary supply place can be stabilized, and the object of the present invention can be achieved.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same reference numerals as those in the conventional example indicate the same or corresponding portions.

FIG. 1 shows a first embodiment of the device according to the present invention, in which the foam supply device includes an exposed pipe or a concealed pipe inside a pipe (for example, from outside the pipe, a worker's hand or an instrument). In order to apply a seal to the pipe joint part where the temperature does not reach (in particular, to the upper part of the pipe joint part and also to both left and right side parts), the liquid sealant is bubbled and supplied to the pipe part without a gap. Is used when doing.

Reference numeral 1 in the figure denotes a container in which the foamable liquid L made of the liquid sealant is contained in a state less than full, and the inside of the container 1 is located above the liquid L containing portion. A liquid level space 2 is formed on one side.

A gas supply pipe 3 for supplying gas for causing bubbling into the liquid L is formed in the container 1 (a nozzle capable of ejecting the gas for causing bubbling is formed at the lower end thereof). And a bubble discharging part 4 which is a part for discharging bubbles generated from the liquid L to the outside of the container 1 by the bubbling. The bubble discharge part 4 is composed of a discharge pipe having a diameter larger than that of the gas supply pipe 3, and the discharge pipe having a large diameter is in a state of directly penetrating the ceiling wall of the container 1 downward. It is installed. On the other hand, the gas supply pipe 3 is indirectly attached to the container 1 by penetrating the upper part of the large-diameter discharge pipe and fixing the state of being inserted into the discharge pipe.

The gas supply pipe 3 may be attached to the container 1 separately from the bubble discharge part 4, as shown in FIG. However, also in this case, the nozzle formed at the tip of the gas supply pipe 3 is made to face the inside of the tip extension portion 4a of the large-diameter discharge pipe constituting the bubble discharge portion 4, and the gas is supplied from the nozzle. It is necessary to guide the generated foam to the foam discharge section 4.

Inside the container 1, a bubble collection space 5 is formed for collecting bubbles generated from the liquid L by the bubbling and communicating with the bubble discharge part 4. The bubble collection space 5 is constructed as follows. That is, the large-diameter discharge pipe that constitutes the bubble discharge portion 4 is attached to the container 1 with the tip extension portion 4a thereof being inserted into the container 1, and the tip extension portion 4a is used. The bubble collection space 5 is defined by partially partitioning the liquid level space 2. In other words, the partition means A that partially forms the bubble collecting space 5 in a part of the liquid level space 2 irrespective of the liquid level change due to bubble discharge constitutes the bubble discharge part 4. A discharge pipe having a diameter is attached to the container 1 with the tip extension portion 4a thereof being inserted into the container 1.

Then, bubbles generated from the liquid L are discharged to the outside of the container 1 via the bubble collection space 5 and the bubble discharge section 4.

In the device of the present invention configured as described above, the partition means A that partially forms the bubble collection space 5 is provided in a part of the liquid level space 2, so that the presence of the partition means A causes the bubble collection space 5 to partially form. Therefore, the increase rate of the bubble collection space 5 can be suppressed as small as possible regardless of the change in the liquid surface due to the bubble discharge. Therefore, according to the device of the present invention, by suppressing the increase rate of the bubble collecting space 5, bubbles are generated from the liquid body L in the container 1 so that the liquid L can be supplied to all the necessary supply locations, and the foam is stored in the container. 1 When it is sent to the outside, the density fluctuation of the bubbles can be suppressed as much as possible.

Next, the experimental data when the device of the present invention is used will be described in comparison with the experimental data when the conventional device is used. FIG. 3 shows the correlation between the liquid level height (distance from nozzle to liquid level (cm)) and bubble density (g / cc), and FIG. 4 shows the liquid level height ( The correlation between the distance from the nozzle to the liquid surface (cm) and the foaming volume (cc / min) is shown in FIG. 5, and the liquid level height (distance from the nozzle to the liquid surface (cm)) is shown in FIG. And the foam weight (g / min) is shown. In each figure, the black circles (solid line) are the experimental data when the device of the present invention is used, and the white circles (dashed line) are the experimental data when the conventional device is used. The flow rate of the gas ejected from the nozzle, which is one of the measurement conditions, was calculated using the flow meter indicated value (15.0 m ³ / Hr) and the flow rate correction coefficient (0.951) calculated by the following formula. The corrected value was set to 14.3 m ³ / Hr.

[0016]

[Equation 1]

From these data, when the device of the present invention is used, the fluctuation of the foam density (in other words, the fluctuation of the foam volume and the foam weight) is as small as possible as compared with the case where the conventional device is used. You can see that it is suppressed.

Next, another embodiment will be described. In the above-mentioned embodiment, the device of the present invention is applied when it is necessary to supply the liquid sealant to the inside of the exposed pipe or the concealment pipe indoors. The device of the present invention can also be applied to the case where it is necessary to supply the liquid to the inside of the pipe without exception. The device of the present invention can also be applied to the case where the liquid needs to be supplied to a supply-necessary place other than the inside of the pipe (for example, inside the gas-buried pipe).

The planar shape of the container 1 may be circular or rectangular, and may be any other suitable shape.

An embodiment in which the partitioning means A is constructed as shown in FIG. 6 is also conceivable. That is, an embodiment in which the partition wall 6 for partitioning a part of the liquid level space 2 is provided in the container 1 as the partitioning means A is also conceivable. The partition wall 6 is provided with its lower end constantly immersed in the liquid L.

An embodiment in which the partitioning means A is configured as shown in FIG. 7 is also conceivable. That is, a discharge pipe as the bubble discharge portion 4 is attached to the container 1 so as to be slidable in the vertical direction, and the lower end of the discharge pipe floats above the liquid level space 2 to follow the change in the liquid level. An embodiment is also conceivable in which the partition means A is provided with a floating lid 7 that moves and moves up and down and has a flat area that substantially covers the entire liquid surface of the liquid L.

In the claims of the utility model registration, reference numerals are given for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the device of the present invention.

FIG. 2 is a sectional view showing another embodiment of the device.

FIG. 3 is a graph showing characteristics (foam density) when the above-mentioned device is used, in comparison with a conventional one.

FIG. 4 is a graph showing characteristics (foaming volume) when the above-mentioned device is used in comparison with a conventional one.

FIG. 5 is a graph showing the characteristics (foaming weight) when the device is used in comparison with the conventional one.

FIG. 6 is a sectional view showing a second embodiment of the device of the present invention.

FIG. 7 is a sectional view showing a third embodiment of the device of the present invention.

FIG. 8 is a sectional view showing a conventional foam supply device.

[Explanation of symbols]

 1 Container 2 Space above Liquid Level 3 Gas Supply Pipe 4 Bubble Discharge Section 5 Bubble Collection Space A Partition Means L Liquid

Claims (1)

[Scope of utility model registration request] 1. A bubbling inducement into the liquid (L) with respect to a container (1) in which a liquid (L) capable of foaming is contained in a state less than full and a space (2) above the liquid surface is formed inside. A gas supply pipe (3) for supplying a gas for use is attached, and a bubble collection space (5) for collecting bubbles generated from the liquid (L) by the bubbling and communicating with a bubble discharge part (4) is provided inside. A foam supply device which is configured to be able to discharge bubbles generated from the liquid (L) via the foam collection space (5) in a part of the liquid level space (2), The foam collection space (5)
A foam supply device provided with a partitioning means (A) for partially forming the above regardless of a change in the liquid surface due to foam discharge.