JPH06226145A - Gas-liquid mixing device - Google Patents

Abstract

PURPOSE:To increase the flow rate ratio of a liquid and a gas by simple constitution and to stabilize a gas suction flow rate. CONSTITUTION:A nozzle member 4 is arranged in the liquid inflow port 2 of a hollow main body 1 having a gas inflow port 7 provided to the side surface thereof and a conical barrier member 21 is arranged to the discharge port 5 of the main body 1 in concentric relation to the nozzle member 4 so that the top part 21a thereof is opposed to the nozzle member 4. The liquid injected from the nozzle member 4 flows along the inclined surface 21b of the barrier member 21 and gas is sucked into the main body 1 from the gas inflow port 7 by the ejecting action generated in the small gap 22 between the discharge port 5 and the barrier member 21 at the time of discharge. Since the area of the small gap 23 formed by the discharge port 5 and the barrier member 21 is large, the suction amt. of the gas becomes much and the flow rate ratio of the liquid and the gas can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-liquid mixing device for mixing gas and liquid.

[0002]

2. Description of the Related Art Conventionally, this type of gas-liquid mixing apparatus has a structure as shown in FIG.

The structure will be described below with reference to FIG. As shown in the figure, a nozzle body 4 is arranged at a liquid inlet 2 of a main body 1 via a nozzle holder 3, and a diffuser 6 is arranged at a discharge port 5 concentrically with the nozzle body 4. Further, a gas inlet 7 facing the tip of the nozzle 4 is provided on the side surface of the main body 1. Diffuser 6
Is an inlet portion 8 into which the liquid ejected from the nozzle 4 and the gas flowing from the gas inlet 7 of the main body 1 flow, a straight portion 9 connected to the inlet portion 8, and a downstream portion connected to the straight portion 9. The pressure recovery portion 10 has a tapered shape whose passage area increases accordingly, and an end portion of the pressure recovery portion 10 is an outlet portion 11 through which a mixed liquid in which a gas and a liquid are mixed is discharged to the outside.

In the above structure, the liquid flowing from the nozzle holder 3 is ejected from the nozzle 4 at a high speed as shown by the arrow A. On the other hand, the gas flows from the gas inlet portion 7 of the main body 1 to the periphery of the nozzle 4 as shown by the arrow C. Then, when the liquid ejected from the nozzle 4 at high speed flows into the inlet 8 of the diffuser 6, the gas is drawn into the diffuser 6 together with the liquid by the ejector action, and the liquid is discharged in the straight portion 9 and the pressure recovery portion 10 of the diffuser 6. And the gas is mixed. The pressure of the mixed liquid of gas and liquid is gradually recovered by the pressure recovery unit 10 and is discharged to the outside from the outlet 11 of the diffuser 6 as shown by arrow B.

Further, in Japanese Patent Laid-Open No. 59-213464, a conical body is fixed to the upper surface of the classification rotor below the powder dispersion passage so that the top of the conical body faces the powder dispersion passage. The powder disperser having the configuration provided is shown.

[0006]

In the gas-liquid mixing device having such a conventional structure, the flow rate of the gas sucked into the diffuser 6 depends on the flow rate of the liquid ejected from the nozzle 1 and the area where the ejector action occurs. However, since the area where the ejector action is generated by the flow of the liquid, that is, the area of the inlet portion 8 of the diffuser 6 is very small, the flow rate of the sucked gas is very small, and the flow rate ratio between the liquid and the gas is very small. The (gas flow rate / liquid flow rate) was also small. In order to increase the suction flow rate of the gas, it suffices to pressurize the liquid to increase the flow velocity, but this alone does not significantly change the flow rate ratio of the liquid and the gas. Therefore, in order to increase the flow rate ratio of the liquid and the gas, there is no choice but to provide an air supply device that increases the flow rate of the gas, and there is a problem that the device as a whole becomes large and the cost becomes very high.

Further, the one disclosed in Japanese Patent Laid-Open No. 59-213464 is to efficiently disperse the powder to be treated by utilizing the ejector effect by the high-speed air flow, and the flow rate ratio of liquid and gas. It did not solve the problem of increasing the.

The present invention solves the above-mentioned problems. It is possible to increase the flow rate ratio of liquid and gas with a simple structure, and to reduce the variation in the suction flow rate of gas to stabilize the suction flow rate of gas. It is an object of the present invention to provide a gas-liquid mixing device that can be used.

[0009]

In order to achieve the above object, the present invention has a nozzle body disposed in a liquid inlet of a hollow main body having a gas inlet on a side surface thereof, and the discharge port of the main body is provided with the nozzle body. The conical collision body is concentric with the nozzle body, and its top portion faces the nozzle body, and a conical collision body is arranged.

Further, the top of the collision body is formed into a spherical shape.

[0011]

In the above structure, the liquid ejected from the nozzle body at a high speed flows along the slope of the conical collision body and is discharged as a conical liquid film from the discharge port of the main body. At this time, a minute gap is created between the conical liquid film and the discharge port of the main body, and the gas is sucked by the ejector action accompanying the high-speed discharge of the liquid. The sucked gas comes into contact with the conical liquid film and is mixed with the liquid. In this mixing, the area that causes the ejector action, that is, the area of the gap formed between the collision body and the discharge port of the main body is large, so that the gas suction flow rate increases.

Further, since the top of the collision body is formed into a spherical shape, even if the arrangement position of the collision body deviates slightly and the central axis of the liquid ejected from the nozzle body deviates from the central axis of the collision body. The liquid flows relatively uniformly along the slope of the collision body to form a relatively uniform conical liquid film. As a result, a sufficient area for producing the ejector action is obtained, and the gas suction flow rate becomes stable.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The same parts as those shown in the conventional example are designated by the same reference numerals, and the description thereof will be omitted. (Embodiment 1) FIG. 1 shows a first embodiment of the present invention, in which a hollow main body 1 has a discharge port 5 which is concentric with a nozzle body 4 and whose top portion 21a is an ejection port of the nozzle body 4. A conical collision body 21 is arranged so as to face 4a. And
A small gap 22 is provided between the collision body 21 and the discharge port 5 of the main body 1.

In the above structure, the liquid flowing in from the nozzle holder 3 is jetted from the nozzle body 4 at a high speed as shown by the arrow A. The ejected liquid collides with a collision body 21 provided at the discharge port 5 of the main body 1, and the slope 21 of the collision body 21
It flows along b, passes through the small gap 22 and becomes a conical liquid film 23, and is discharged from the discharge port 5. At this time, a minute gap is formed between the conical liquid film 23 and the discharge port 5, and the gas is discharged through the gas inlet port 7 as shown by an arrow C by the ejector action accompanying the high-speed discharge of the liquid. Be sucked.
Then, the sucked gas comes into contact with the conical liquid film 23 and is mixed with the liquid.

As described above, according to the first embodiment of the present invention, by disposing the conical collision body 21 at the discharge port 5 of the main body 1 with the top portion 21a of the conical collision body 21 facing the nozzle body 4, the liquid The area in which an effective ejector action is generated by the discharge of the gas, that is, the area of the gap formed between the collision body 21 and the discharge port 5 is increased, and the gas suction flow rate is increased. There is an effect that the size can be increased to 10 times.

(Embodiment 2) FIG. 2 shows a second embodiment of the present invention in which the top of the conical collision body 21 is formed into a spherical surface 21c.

In the above structure, the top portion 21 of the collision body 21
Since c is formed in a spherical shape, even if the central position of the liquid ejected from the nozzle body 4 deviates from the central axis of the collision body 21 due to a slight deviation in the installation position of the collision body 21, the liquids are compared. Flow uniformly along the slope 21b of the collision body 21 to form a relatively uniform conical liquid film.

As described above, according to the second embodiment of the present invention, since the top of the collision body 21 is formed into the spherical shape 21c, even if the central axes of the nozzle body 4 and the collision body 21 are deviated, There is an effect that a sufficient area where an effective ejector action occurs can be obtained and the gas suction flow rate can be stabilized.

[0020]

As is apparent from the above description, according to the present invention, the conical collision body is disposed at the discharge port of the main body so that the top of the conical collision body faces the nozzle body. The area where the effective ejector action occurs due to the discharge of the liquid from the gap with the outlet becomes large, and the gas suction flow rate can be increased to increase the liquid-gas flow rate ratio.

Further, since the top of the collision body is formed into a spherical shape, even if there is a deviation between the central axes of the nozzle body and the collision body, a sufficient area for producing an effective ejector action can be obtained, and the gas suction flow rate. Can be stabilized.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of a gas-liquid mixing device of the present invention.

FIG. 2 is a side sectional view of the other embodiment.

FIG. 3 is a side sectional view of a conventional gas-liquid mixing device.

[Explanation of symbols]

 1 Main Body 2 Liquid Inlet 4 Nozzle 5 Outlet 7 Gas Inlet 21 Collision Body 21a Top 21c Spherical Surface 22 Small Gap

Claims (3)

[Claims] 1. A hollow main body having a liquid inlet at one end for introducing a liquid, a gas inlet at a side for introducing a gas, and a discharge outlet for discharging the liquid and the gas at the other end, and the main body. A nozzle body disposed in the liquid inflow port for ejecting the liquid at high speed, and a conical shape disposed concentrically with the nozzle body at the discharge port of the main body and having its top facing the nozzle body. A gas-liquid mixing device, comprising: a collision body. 2. The gas-liquid mixing device according to claim 1, wherein the top of the collision body is formed into a spherical shape. 3. The gas-liquid mixing device according to claim 1, wherein a small gap is formed between the slope of the collision body and the liquid inlet of the main body.