JPS5826370Y2 - Defoaming flow divider - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a defoaming flow divider that is attached to a liquid turbidity meter or the like and divides a sampling liquid into a liquid to be measured without air bubbles and a drain liquid with air bubbles.

Turbidity meters are known that use optical means to measure oil contained in waste oil water for ships, generally called binge, or ballast water, which is put into empty tanks to compensate for the stabilization of turbulence.

This type of turbidimeter guides the liquid to be measured into a measurement cell, irradiates it with a parallel beam of light, and measures the intensity of the incident light and transmitted light, respectively, to determine the turbidity.

However, if air bubbles exist in the liquid to be measured, they will be measured as turbidity and an accurate measurement value will not be obtained. It is necessary to quickly remove this in the delivery path to prevent it from occurring.

The present invention was devised in view of the above points, and includes a cylindrical outer casing in which the upper opening end is closed with a member equipped with a degassing port and the lower opening end is closed with a member equipped with an analysis liquid outlet. An inner cylinder with a smaller diameter and lower height than this is installed in the inner chamber of the chamber, and the sample liquid that flows in from the inlet provided on the outer periphery of the outer casing is divided into a drain liquid containing air bubbles and a liquid to be measured that does not contain air bubbles. The object of the present invention is to provide a degassing flow divider that is configured to be discharged from a degassing port and an analysis liquid outlet, respectively, thereby making it possible to efficiently collect a liquid to be measured that does not contain bubbles.

Hereinafter, its configuration and the like will be explained in detail with reference to embodiments shown in the drawings.

1 to 3 show a defoaming flow divider according to the present invention,
Fig. 1 is a block diagram of a liquid turbidity measuring device that implements this, Fig. 2 is a sectional view of a defoaming flow divider, and Fig. 3 is a perspective view of the inside of the outer casing to explain the defoaming flow diversion function. .

In the figure, the defoaming flow divider 1 is equipped with an outer casing 2 formed in a cylindrical shape. 6 is provided.

This outer casing 2 has upper and lower open ends connected to an upper closing member 8.
and a lower closing member 9, and a defoaming port 10 is opened in the center of the upper closing member 8.
Further, the lower closing member 9 is provided with an analytical liquid outlet 11 having a smaller opening area than the defoaming port 10 .

An inner cylinder 12 that is concentric with the outer casing 2 and has a smaller diameter than its inner circumference and opens upward is erected on the lower closing member 9, and this inner cylinder 12 and the outer casing A liquid passage 13 is formed between the inner peripheral surface of the inner cylinder 12 and the lower surface of the upper closing member 8 by lowering the height of the inner cylinder 12. A passage 14 is formed.

Analysis liquid outlet 11 of the degassing flow divider 1 configured in this way
is connected to the inlet of the measurement cell 15 via a valve 16 and by a feed pipe 17.

The measurement cell 15 is conventionally known, and the liquid to be measured that is fed into the cell is irradiated with a parallel light beam from a light source 18, which is received by a light receiver 19, and the intensity of the incident light and transmitted light is calculated. The turbidity of the liquid to be measured is determined by measuring each of them.

A drain pipe 20 is connected to the defoaming port 10 of the defoaming flow divider 1, and a drain pipe 2 is connected to the outlet of the measurement cell 15.
1 is merged with the liquid at the ejector 22, and the drain pipe 20 that passes the ejector 22 is opened to the outside of the machine.

In the turbidity measurement device configured as described above, the sample liquid 6 containing air bubbles stored in the tank 5 is ejected from the inflow lower into the degassing flow divider 1 and collides with the outer wall of the inner cylinder 12 from a right angle direction. .

Then, this jet stream splits into two parts along the outer periphery of the cylinder 12, and flows into the liquid passage 13 while going around to the opposite side of the inflow lower.
Flows toward the exit, that is, upward, and the flow rate deteriorates.

At this time, bubbles existing in the sample liquid 6 float to the surface and collect in the upper fluid passage 14.

When the rising sample liquid 6 reaches the fluid passage 14, it is branched into two directions, and most of it is discharged from the relatively large-diameter defoaming port 10 along with the air bubbles collected there, while the sample liquid 6 does not contain air bubbles. A part of the liquid descends inside the inner cylinder 12 without disturbance and flows out from the small-diameter analysis liquid outlet 11 as an analysis liquid.

The analytical liquid that has flowed out is sent to the measurement cell 15 via the feed pipe 17, and after a predetermined turbidity measurement is performed, it is sent to the ejector 22 via the drain pipe 21.

Further, when the liquid containing air bubbles discharged from the defoaming port 10 of the defoaming flow divider 1 passes through the ejector 22, the liquid is discharged from the drain pipe 2.
The liquids from 1 are combined and discharged outside the machine as drain.

In this way, since there are no bubbles in the liquid to be measured passing through the measurement cell 15, the turbidity of the liquid to be measured can be measured very accurately.

In order to increase the degassing and diverting efficiency, the resistance of the defoaming diverter 1 should be made as low as possible, and the capacity should be made small so as not to prolong the time from the start of sampling to the measurement by the measurement cell 15. Along with the need to
The inner cylinder 12 must be dimensioned to prevent air bubbles accumulated above from being drawn into the inner cylinder, and to ensure circulation of liquid between the inner cylinder 12 and the outer casing 2.

Furthermore, a space large enough for air bubbles to play is required above the inner cylinder 12.

Therefore, in this example, in order to obtain a response of 20 seconds or less at a flow rate of 1077L piping using 1077L piping, the inner diameter of the outer casing 2 was set to 82mm, the height was set to 90mm, and the capacity was set to 0.
．． I set it to 51 or less.

In addition, the inner cylinder 12 has an inner diameter of 42 mm and a height of 72 mm, the diameters of the inflow lower and defoaming port are 18 mm, and the analytical liquid outlet 1
The diameter of No. 1 was 11 mm.

Furthermore, by providing the ejector 7, the liquid on the drain pipe 20 side, which has a large flow rate of, for example, 91 per minute, can suck the liquid to be measured on the drain pipe 21 side, which has a small flow rate of, for example, 11 per minute. , the flow is promoted and appropriate diversion is obtained.

As is clear from the above explanation, according to the present invention, the defoaming flow divider is formed of a cylindrical outer casing and an inner cylinder with a smaller diameter and lower than this provided inside the cylindrical outer casing. A defoaming port and an analysis liquid flow port are opened in a member that separates the sample liquid flowing in from the inlet provided in the inlet into a drain liquid containing air bubbles and a liquid to be measured that does not contain air bubbles, and closes the upper and lower open ends of the outer casing. By configuring the liquid to be discharged from both sides, it is possible to collect the liquid to be measured that does not contain air bubbles very efficiently.By attaching this to a liquid turbidity meter, etc., it is possible to collect the liquid to be measured without air bubbles. Extremely accurate measurement results can be obtained, and its addition does not reduce the inherent capabilities of the measuring instrument.

Further, by providing an ejector in the liquid flow path, the defoaming and diversion effect can be further promoted.

[Brief explanation of drawings]

1 to 3 show a defoaming flow divider according to the present invention,
Fig. 1 is a block diagram of a liquid turbidity measuring device that implements this, Fig. 2 is a sectional view of a defoaming flow divider, and Fig. 3 is a perspective view of the inside of the outer casing to explain the defoaming flow diversion function. . 1... Defoaming flow divider, 2... Outer casing, 7.
...Inflow port, 8...Upper closing member, 9.
...Lower closing member, 10... Deaeration port, 1
1... Analysis liquid outlet, 12... Inner cylinder,
13, 14...Liquid passage.

Claims (2)

[Scope of utility model registration request] (1) An outer casing formed in a cylindrical shape and having a sampling liquid inlet near the lower part of the outer periphery; an upper closing member that closes the upper opening end of the outer casing and has a defoaming port in the center; a lower closing member that closes the lower opening end of the casing and includes an analysis liquid outlet in the center having an opening area smaller than the defoaming port;
A defoaming device characterized in that the inner cylinder is formed in a cylindrical shape that opens upward, and is erected on the lower closing member to form a liquid passage between the outer casing and the upper closing member. Flow divider. (2) Utility model registration item 1, characterized in that an ejector is provided at the confluence of the drain pipes from both days, which causes the liquid discharged from the defoaming port to suck the liquid discharged from the analytical solution outlet. Description 0 defoaming flow divider.