JPH0733841Y2 - Defoaming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a defoaming device for removing bubbles in a liquid such as a coating liquid.

[Prior Art] An example of a conventional defoaming device will be described with reference to FIG. 2. The upper end of the liquid inflow pipe 1 communicates with the liquid inflow chamber 2, and the upper plate above the liquid inflow chamber 2. 3 is provided. An upper cover 5 that forms a bubble storage chamber 4 is provided on the upper plate 3, and the casing 6 that forms the liquid inflow chamber 2 and the peripheral edges of the upper plate 3 and the upper cover 5 have stop bolts. It is tightened by 7. A boss 8 is attached to the upper plate 3, and an upper end of a vertical separation cylinder 9 is fixed to the lower side of the boss 8. A small hole 10 is formed at the center of the boss 8, and the central portion of the upper end of the separation cylinder 9 communicates with the bubble storage chamber 4 through the small hole 10. Also, on the upper side surface of the separation cylinder 9,
As shown in FIG. 3, a liquid inlet 11 in the tangential direction is bored so that the inside of the upper end of the separation cylinder 9 communicates with the liquid inflow chamber 2 via the liquid inlet 11. The lower end of the separation cylinder 9 communicates with the defoaming liquid storage chamber 12.

A liquid such as a paint liquid containing bubbles is pressurized, enters the liquid inflow chamber 2 from the liquid inflow pipe 1, and flows into the separation cylinder 9 through the liquid inflow port 11 at high pressure and high speed. Since the liquid inlet 11 is bored in the tangential direction of the separation cylinder 9, the liquid flowing into the separation cylinder 9 through the liquid inlet 11 at a high pressure and at a high speed is
It becomes a swirling flow along the inner wall surface of and descends. The bubbles having a low specific gravity gather at the center of the separation cylinder 9, pass through the pores 10 and enter the bubble storage chamber 4, and then are removed from the de-cylinder 13. The defoaming liquid from which the bubbles have been separated enters the defoaming liquid storage chamber 12 from the lower end of the separation cylinder 9 and is then taken out.

[Problems to be solved by the invention] When replacing a defoaming liquid, for example, when attempting to defoam a paint liquid of a different type from the defoaming paint liquid, the inside of the defoaming device is Need to be washed. In addition, it is necessary to wash similarly after the operation for a long time.

When the conventional defoaming apparatus shown in FIG. 2 is washed, the stop bolt 7 is removed to separate the upper cover 5 formed with the bubble storage chamber 4 from the upper plate 3 and the pressure water from the fine holes 10 is removed. Pour,
The insides of the separation cylinder 9, the defoaming liquid storage chamber 12, the liquid inflow chamber 2, and the liquid inflow pipe 1 were washed.

However, in the conventional defoaming device shown in FIG. 2,
There was a drawback that the upper corner portion 14 of the defoaming liquid storage chamber 12 could not be sufficiently washed with the pressure water poured from the pores 10.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a defoaming device that solves the above-mentioned conventional drawbacks and can sufficiently clean the upper corners of the defoaming liquid storage chamber.

[Means for Solving the Problems] A defoaming device of the present invention comprises a separation cylinder having a tangential direction liquid inflow port, a liquid inflow chamber communicating with the liquid inflow port, and a thin tube formed at one end of the separation cylinder. A bubble accommodating chamber that communicates with one end of the separation cylinder through a hole, a defoaming liquid storage chamber that communicates with the other end of the separation cylinder, and a communication with the liquid inflow chamber that are integrally formed with the separation cylinder. In a defoaming device including a connection pipe and a liquid inflow pipe that is capable of communicating with the connection pipe and is integrally formed with the defoaming liquid storage chamber, the defoaming liquid storage chamber and the separation cylinder can be opened. It is characterized by being connected.

[Operation] By separating the defoaming liquid storage chamber, the upper corners of the defoaming liquid storage chamber are exposed, and not only this portion but also the inside of the separation cylinder can be sufficiently cleaned. Further, a bubble storage chamber is formed on one end side of the separation cylinder, a defoaming liquid storage chamber is arranged on the other end side of the separation cylinder, and a liquid inflow pipe is arranged to connect the liquid from the liquid inflow pipe. Since the liquid is supplied to the liquid inflow port of the separation cylinder via the pipe and the liquid inflow chamber, a plurality of separation cylinders can be arranged so as to surround the liquid inflow pipe and the connection pipe. Even if the liquid has a relatively high viscosity as described above, the defoaming performance can be enhanced by uniformly supplying the liquid to the separation cylinders.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a liquid inflow pipe, 2 is a liquid inflow chamber, 3 is an upper plate, 4 is a bubble storage chamber formed by an upper cover 5, and a casing 6 forming the liquid inflow chamber 2, The peripheral edges of the upper plate 3 and the upper cover 5 are tightened with stop bolts 7. The upper end of the separation cylinder 9 is fixed to the lower side of the upper plate 3, and the central portion of the upper end of the separation cylinder 9 communicates with the bubble storage chamber 4 through the pores 10 formed in the upper plate 3. ing. A tangential direction liquid inflow port 11 shown in FIG. 3 is bored in the upper side surface of the separation cylinder 9 as in the conventional case, and communicates with the liquid inflow chamber 2.

The lower end of the separation cylinder 9 is fixed to the lower plate 15, and the upper end of the lower casing 16 forming the defoaming liquid storage chamber 12 is the substrate 17
Is stuck to. The lower plate 15 is mounted on the substrate 17, and one side of the lower plate 15 is pivotally attached to one side of the substrate 17 by a hinge 18 so as to be pivotable upward. The other side of the lower plate 15 can be fixed to the other side of the board 17 by a lock lever 19. A connection pipe 20 having the same diameter as that of the liquid inflow pipe 1 is fixed between the lower plate 15 and the casing 6 so as to closely contact the upper end of the liquid inflow pipe 1.

In the apparatus shown in FIG. 1, liquid such as paint liquid containing bubbles is
It is pressurized and passes through the liquid inflow pipe 1 and the connection pipe 20, and the liquid inflow chamber 2
It flows into the separation cylinder 9 through the liquid inlet 11, becomes a swirling flow, and while separating the bubbles, enters the defoaming liquid storage chamber 12, and is then taken out. The bubbles separated from the liquid pass through the pores 10 and enter the bubble storage chamber 4, and then are removed upward. Further, the bubble accommodating chamber 4 is formed at one end side of the separating cylinder 9, the defoaming liquid accommodating chamber 12 is arranged at the other end side of the separating cylinder 9, and the liquid inflow pipe 1 is arranged so that the liquid inflow pipe is formed. The liquid from 1 is connected to the connecting pipe 20 and the liquid inflow chamber 12
Since the liquid is supplied to the liquid inflow port 2 of the separation cylinder 9 via the above, a plurality of separation cylinders 9 can be arranged so as to surround the liquid inflow pipe 1 and the connecting pipe 20, and thus the coating liquid As described above, even a liquid having a relatively high viscosity can be uniformly supplied to each of the separation cylinders 9 to enhance the defoaming performance.

When cleaning the inside of the defoaming device of FIG. 1, the stop bolt 7 is removed and the upper cover 5 is separated from the upper plate 3 as in the conventional case. Further, the lock lever 19 is removed, and the lower plate 15 is rotated upward about the hinge 18.

Of course, in some cases, hinge 18, lock lever 19
It is also possible to separate them by not attaching them and simply fixing them with bolts like the upper plate 3.

As a result, the lower plate 15 and the separation cylinder 9 are separated from the defoaming liquid storage chamber 12, and the upper surface of the defoaming liquid storage chamber 12 is opened. You will be able to wash. Further, the separation cylinder 9 can also be sufficiently washed by injecting pressurized water from the wide opening on the lower end side.

The defoaming device of the present invention is not limited to the above-described embodiment, but can be similarly applied to the case of horizontal arrangement and upside down arrangement, and other various changes within the scope not departing from the gist of the present invention. Of course, what can be done, etc.

[Advantage of the Invention] The present invention can enhance the defoaming efficiency by uniformly supplying the liquid to the separation cylinder, and can sufficiently clean the defoaming liquid storage chamber and the separation cylinder in a short time. There is an effect that can be done.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional view of an embodiment of the present invention, FIG. 2 is a vertical sectional view of a conventional apparatus, and FIG. 3 is an enlarged sectional view taken along line III-III of FIG. In the figure, 4 is a bubble storage chamber, 9 is a separation cylinder, 10 is a pore, 11 is a liquid inlet, 12 is a defoaming liquid storage chamber, 15 is a lower plate, and 17 is a substrate.

Claims (1)

[Scope of utility model registration request] 1. A separation cylinder having a tangential direction liquid inlet, a liquid inflow chamber communicating with the liquid inlet, and a communication formed inside one end of the separation cylinder through a small hole formed at one end of the separation cylinder. A bubble storage chamber, a defoaming liquid storage chamber that communicates with the inside of the other end of the separation cylinder, a connection pipe that communicates with the liquid inflow chamber and is configured integrally with the separation cylinder, and can communicate with the connection pipe. A defoaming device comprising a defoaming liquid storage chamber and a liquid inflow pipe integrally formed with the defoaming liquid storage chamber, wherein the defoaming liquid storage chamber and a separation cylinder are openably connected.