JPS61187927A - Mixer - Google Patents

Abstract

PURPOSE:To mix a gas easily and uniformly as the fine foams into a liquid and to perform the excellent contact and mixing by opposing an inlet of a downstream duct part of a main duct to an aperture of a nozzle in a narrow interval in the inside of a suction chamber and opening it. CONSTITUTION:Air contg. ozone which is passed through an ozone generator enters a suction chamber 12 through a side duct 18 and is sucked into a jet stream of water injected from a nozzle 13 and passed through a passage 21 and sent to a downstream duct part 11b through a gap of both the apertures 15, 16. Herein since the passage 21 is narrow, the air is sucked in the opposite direction to the stream of water in the high velocity and sent to the downstream duct part 11b together with water by changing the direction parallel to the water passing between the apertures 15, 16. The air being a side stream is flowed in the high velocity and reversed between 90 deg. and 180 deg. and the direction is changed suddenly and largely and thereby the air is made to the fine air foams and mixed with water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mixing device particularly suitable for mixing gas and liquid using a jet stream from a nozzle.

It is well known that one of the means for mixing gas-air, gas-liquid, and liquid-liquid is to use an injector or ejector that generates a jet stream in the main stream using a nozzle and sucks a side stream. Generally, as shown in FIG. 3, this pipe agitation device has a suction chamber 2 in the main pipe 1, and a nozzle 3 is connected to the upstream pipe part 1a to open toward the downstream pipe part 1b. , the side flow sent from the side pipe 4 connected to the suction chamber 2 is sent in parallel to the main stream ejected from the nozzle/L/3 to provide a contact and mixing effect due to turbulent flow. is the downstream pipe section surrounding nozzle 3! It has a reduced portion 5 that gradually becomes smaller in diameter toward b.

In such a conventional configuration, especially when it is necessary to uniformly mix the gas or the components contained therein into the mainstream liquid, the gas as a side stream flows between the constriction section 5 and the nozzle 3. Since it is fed parallel to the jet of liquid through the intervening annular part 6, it has the disadvantage that turbulence does not generate small air bubbles and therefore does not allow for sufficiently uniform mixing.

Means for Solving the Problems The present invention solves the above-mentioned problems and provides a mixing device that generates small bubbles and provides an excellent mixing effect.

That is, in the present invention, a suction chamber connected to the fI main conduit is provided in the main conduit, and a nozzle connected to the upstream conduit section of the main conduit opens at the upstream end surface of the suction chamber, The inlet of the downstream pipe section of the main pipe opens in the suction chamber opposite to the opening of the nozzle at a narrow interval, and the two The above-mentioned problem was solved by providing a narrow passage for guiding the side flow into the opening.

Example The present invention will be explained based on the embodiment shown in FIG. 1.2.

A suction chamber 12 is provided in the main conduit 11, and a nozzle 13 whose inner diameter gradually becomes smaller is connected to the tip of the upstream conduit section 11m of the main conduit 11. Upstream end surface 1 of suction chamber 12 formed in a right-angled plane
4, the tip of the nozzle/I/13 is opened 015L, and the downstream pipe section 11b of the main pipe line 11 penetrates into the suction chamber 12, and its inlet is connected to the opening 15 of the nozzle 13, for example, z, om or less, preferably 1 Openings 16 facing each other with a narrow interval of .0a or less
It's on. These two openings 15 and 16 are made to have the same diameter, or the opening 15 of the nozzle 13 has a slightly larger diameter, and the downstream pipe section 11b is formed with a tapered section 17 that gradually widens from a little downstream of the opening 016. It has been expanded to the diameter of

A side conduit 1B is connected and opened on the side surface of the suction chamber 12.

Further, the outer circumferential surface of the inlet O portion of the downstream pipe section 11b has an opening 16.
The tapered surface 19 is formed on the upstream end wall of the suction chamber 12. An insertion hole is provided in the upstream end surface 14 and has a tapered surface 20 having a diameter slightly larger than that of 9. A narrow passage 21 having an annular thickness of about 3 times or less is formed. The peripheral edge of the opening 160 of the downstream conduit portion 11b is formed into a sharp knife-like shape.

This embodiment with such a configuration is used when, for example, water is flowed through the main pipe 11 and ozone-containing air is flowed through the side pipe 1B to mix them and sterilize the water with ozone. The pressurized water that is forced to flow through the upstream pipe section 11a is ejected from the nozzle 13 and enters the downstream pipe section 11b.

The ozone-containing air passes through the ozone generator and enters the suction chamber 12 from the side pipe 18, is sucked by the jet of water ejected from the nozzle 13, passes through the passage 21, and enters the two openings I.
It is fed into the downstream pipe section 11b from between points g and 1g. Here, since the first passage 21 is narrow, the air is sucked in at high speed in the opposite direction to the water flow, and at the 9th stage, the direction is changed parallel to the water passing between the openings 015 and 16, and it is carried along with the water to the downstream pipe section. 1
1b, the air flowing in the n flow flows at high speed and reverses at an angle between 90 degrees and 180 degrees, causing a sudden and large change in direction, which causes it to form minute bubbles and form water. It is mixed with

The tapered portion 17 is made wide enough to prevent bubble growth and transport water without causing loss, and generally has a slope of about 1 to 2 thousandths.

Incidentally, a plurality of nozzles 13 are branched and connected in one upstream pipe section 11m, and openings 016 of the downstream pipe section 11b are provided facing each nozzle, and these openings 16 are merged through a tapered section 17, and each A narrow passage 21 may be formed on the outer circumferential surface of the inlet O portion, and the flow rate of the main flow can be increased or the mixing ratio of the side flow can be increased.

According to the present invention, the nozzle of the upstream conduit section is opened at the upstream end face of the suction chamber, and the nozzle of the downstream conduit section is opened so as to face the opening at a narrow interval, and the inlet O of the downstream conduit section is opened. A narrow passage was provided on the outer circumferential surface of the part so that the IIIN was drawn between the two openings in a direction opposite to the main flow, so that the IIIN of the suction chamber was drawn in a direction opposite to the main flow. 1ML flows at a high speed through a narrow passage and then rapidly reverses direction, and as a result, am is divided into extremely small pieces and mixed into the mainstream. Therefore, when the gas is 9161 and the liquid is the main stream, the gas forms fine bubbles and is easily and evenly mixed into the liquid, resulting in good contact and aggregation.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is an enlarged partial view thereof, and FIG. 3 is a longitudinal sectional view of a conventional example. 11...Main pipeline, 11m...Upstream pipeline section, llb...Downstream pipeline section, 12...
・Suction chamber, 13... Nozzle, 14...
Upstream end face, Is, 16...1lc1.18.
... Side pipe, 21 ... Passage. Figure 1 Figure 2 13----) Spool

Claims (1)

[Scope of Claims] A suction chamber connected to a side pipe is provided in the main pipe, and a nozzle connected to the upstream pipe of the main pipe opens at the upstream end surface of the suction chamber, and The inlet of the downstream pipe section of the main pipe opens in the suction chamber opposite to the opening of the nozzle at a narrow interval, and the two openings are formed on the outer circumferential surface of the inlet part of the downstream pipe section. Mixing device characterized in that it is provided with a narrow passage for guiding a side flow into the mixing device.