JP2000140595A - Flow mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to mix two kinds of fluid uniformly in the wide ranging from a low velocity of the falling of the fluid to a high velocity of that. SOLUTION: A first inlet 4 and a second inlet 5 are formed in a mixer body 1 and an outlet 6 is formed in an under cover, and an injecting-fluid pipe 8 which connects the second inlet 5 with a mixing chamber 7 is placed. Rotating blades 20, which connect the first inlet 4 with the mixing chamber 7, are so equipped on the surface of the fluid-injection pipe 8 as to move up and down flexibly. The velocity of fluid by the rotating blades 20 can be controlled by the control of a flow-area in such a way that the distance between the respective rotating blades 20 is changed by moving a screw 14 up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow mixer which is charged into a fluid transport piping system and injects and mixes another fluid into a transport fluid. This flow mixer is used for various purposes such as mixing water and oil, or mixing coffee and milk.

[0002]

2. Description of the Related Art As a conventional flow mixer, for example, the one disclosed in Japanese Utility Model Publication No. 61-97 has been used. This is to provide a plurality of small holes connected to the spiral channel,
In this method, another fluid is injected into the fluid passing through the spiral flow channel from the small holes to mix the two fluids.

[0003]

The conventional flow mixer described above has a problem that the two fluids cannot be mixed uniformly depending on the speed of the flowing fluid. If the flow rate is low, the two fluids cannot be uniformly mixed as a whole, and conversely, if the flow rate is too high, the fluid flows down before the uniform mixing.

Accordingly, an object of the present invention is to provide a flow mixer capable of controlling the flow rate of an inflowing fluid so as to uniformly mix fluids of any flow rate.

[0005]

Means of the present invention taken to solve the above-mentioned problems are to provide a mixing chamber for casing, a first inlet and a second inlet communicating with the mixing chamber, and Providing an outlet, mixing the fluids flowing from the first and second inlets in the mixing chamber and flowing down from the outlet, and disposing a fluid injection pipe communicating the one inlet and the mixing chamber, and the other inlet A flow rate adjusting member that communicates with the mixing chamber is mounted on the outer periphery of the fluid injection pipe, and the flow rate adjusting member is movably mounted to change the speed of the passing fluid to promote mixing.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When the flow velocity of the fluid to be mixed is low due to the movably mounted flow velocity adjusting member, the flow velocity adjusting member is moved to increase the flow velocity, and
When the flow velocity of the fluid to be mixed is too high, the flow velocity adjusting member is moved to reduce the flow velocity, so that a flow velocity suitable for mixing can be obtained, and both fluids can be uniformly mixed as a whole. .

The flow rate adjusting member can adjust the passage area of the flow path through which the fluid flows down. If the flow rate is low, the passage area is reduced to increase the flow rate. In this case, the flow rate can be adjusted to a suitable flow rate by lowering the flow rate by increasing the passage area.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A casing of a flow mixer is formed by a main body 1, a cap 2, and a lower lid 3. 1st entrance 4 and 2nd in body 1
The mixing chamber 7 is formed by the lower lid 3 provided with the inlet 5 and the outlet 6 and the main body 1. A fluid injection pipe 8 that communicates the second inlet 5 with the mixing chamber 7 is disposed at the center, and a spiral swirling blade 20 as a flow rate adjusting member that communicates the first inlet 4 with the mixing chamber 7 is vertically arranged on the outer periphery thereof. Attach movably across

A pipe 10 and a plurality of communication holes 9 are formed in the pipe 10 in the cylindrical fluid injection pipe 8 to communicate with the second inlet 5. A large number of small-diameter holes 11 are provided on the side of
The fluid to be injected from the inlet 5 of the nozzle can flow into the mixing chamber 7 through the small-diameter hole 11.

A spiral swirling blade 2 as a flow rate adjusting member
Numeral 0 is made of a thin plate spring material, the upper end of which is in contact with the inner wall 12 in the main body 1, and the lower end of which is a lower convex portion 13 of the fluid injection pipe 8.
And the swirl vane 20 slidably attaches the outer periphery of the fluid injection pipe 8. In the present embodiment, an example in which the swirling vanes 20 are arranged vertically in three stages is shown. The lower part of the swirling blade 20 communicates with the outlet 6.

An adjustment screw 14 is provided to extend above the communication hole 9 of the fluid injection pipe 8 so as to extend. A packing 15 is attached to the outer periphery of the adjusting screw 14 via the cap 2 to prevent leakage of the internal fluid to the outside.

The cap 2 is screwed to the main body 1 and provided with a female thread at the center to be screwed to the adjusting screw 14. By rotating the nut 16 at the upper end of the adjusting screw 14, the adjusting screw 14 moves up and down, and the protrusion 13 at the lower end of the fluid injection pipe 8 also moves up and down. Also moves up and down.

When the lower end of the swirling blade 20 moves upward, the passage area of the flow path between the swirling blades 20 is narrowed and the flow speed of the fluid is increased, and conversely, the lower end of the swirling blade 20 moves downward. By doing so, the passage area of the flow path between the swirling blades 20 is increased, and the flow velocity can be reduced. The state shown in the figure shows a state in which the protruding portion 13 contacts the lower stopper 17, the swirl blade 20 is located at the lowermost end, and the passage area of the flow path is the largest.

The fluids flowing into the mixing chamber 7 from the first inlet 4 and the second inlet 5 are mixed while swirling by the swirling blade 20, and are discharged from the outlet 6 out of the system.

When the flow velocity of the fluid passing through the swirl vanes 20 is low, the flow rate can be increased and a predetermined mixing can be performed by raising the adjusting screw 14 to reduce the passage area between the swirl vanes 20. On the other hand, when the flow rate is high, the flow rate can be reduced by lowering the adjusting screw 14 to increase the passage area, so that predetermined mixing can be performed.

[0016]

According to the present invention, by the flow rate adjusting member,
The flow rate of the fluids to be mixed can be arbitrarily adjusted, and the flow mixer can uniformly mix the two fluids over a wide range from low to high flow rates.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of a flow mixer of the present invention.

[Explanation of symbols]

 4 First Inlet 5 Second Inlet 6 Outlet 7 Mixing Room 8 Fluid Injection Tube 11 Small Hole 20 Swirling Blade

Claims (1)

[Claims] A casing is provided with a mixing chamber, a first inlet and a second inlet connected to the mixing chamber, and an outlet.
In the case where the fluid flowing from the first and second inlets is mixed in the mixing chamber and flows down from the outlet, a fluid injection pipe communicating between the one inlet and the mixing chamber is arranged, and the flow rate communicating the other inlet with the mixing chamber. A flow mixer, wherein an adjusting member is attached to an outer periphery of the fluid injection pipe, and the flow rate adjusting member is movably attached to change the speed of a passing fluid to promote mixing.