JPS601799Y2 - mixer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mixer for mixing multiple types of fluids at a predetermined ratio, and particularly to the structure of a mixer main body consisting of a cylinder and a piston.

As is well known, conventional mixers consist of a plurality of cylinders and a separate piston inserted into each cylinder.

The mixing ratio is determined by the cross-sectional area of the internal space of each cylinder and the stroke of the piston.

However, in this conventional product, since the pistons are separate for each fluid, their strokes cannot be perfectly matched, and therefore, the difference in the strokes of the individual pistons results in an error in the mixing ratio.

Therefore, the present invention provides a mixer with a new configuration in which the stroke of the piston does not affect the mixing ratio.

That is, in the mixer according to the present invention, one piston is provided with different diameter parts, and the different diameter parts are separated so that the mixing ratio of the fluids to be mixed is determined by the difference in cross-sectional area of the different diameter parts. The fluid is inserted into the cylinder chamber of the piston, and as the piston reciprocates, the fluid of - is sent out through the piping that communicates with the cylinder chamber of -, and the other fluid is sent out through the piping that communicates with the other cylinder chamber. The gist is that the bark was mixed with fluid.

Embodiments of the present invention will be described below based on the drawings.

Fig. 1 shows an embodiment of the present invention, in which 1 indicates a piston, 2
is a cylinder.

The piston 1 has a small diameter portion 1a on its tip side,
The proximal end side is shaped like a large diameter portion 1b.

Inside the cylinder 2, two units 2a, 2 are sealed by a suitable sealing member 3.
The small diameter portion 1a of the piston 1 is inserted into one chamber 2a, and the large diameter portion 1b is inserted into the other chamber 2b.

Each cylinder chamber 2a, 2b is provided with an inlet/outlet for fluid (liquid in this embodiment), and each inlet/outlet is provided with a pipe P1. P2
is connected.

4 is a storage tank storing one of the liquids W1 to be mixed; 5 is a storage tank storing the other liquid W2 to be mixed; 6 and 7 are three-way valves;
8 is a mixing tank.

In this configuration, if the three-way valves 6 and 7 are set so that the storage tanks 4 and 5 and the cylinder chambers 2a and 2b are in communication with each other, and the piston 1 is moved downward by a length l, suction is drawn into the cylinder chamber 2a. The amount of liquid Q1 sucked into the cylinder chamber 2b and the amount Q2 of liquid sucked into the cylinder chamber 2b are reduced.

Here, Dl is the diameter of the small diameter portion 1a, and D2 is the diameter of the large diameter portion 1b.

Next, when the three-way valves 6 and 7 are switched and the piston 1 is raised to its original position, the liquid W1 sucked into the cylinder chamber 2a passes through the three-way valve 6 of the pipe P1, and is sucked into the cylinder chamber 2b. The liquid W2 passes through the pipe P2 and the three-way valve 7, and is discharged into the mixing tank 8, respectively.

Emission amount is Q engineering + Q2.

Both liquids are mixed in this mixing tank 8, and the mixing ratio is Q
□: Given by Q2.

Substituting the above equations (1) and (21) into Ql and Q2 and rearranging them, we get the following.

DY: (D≦-D) In other words, the mixing ratio is a function only of Dl and D2, and is not affected by the stroke of the piston.

Next, FIG. 2 shows another embodiment of the present invention.

In this embodiment two different diameter sections 1a of the piston 1
The sample liquid is diluted at a high dilution ratio without increasing the diameter ratio of tlb too much.

In this embodiment, when the piston 1 moves downward, the diluent is drawn into the cylinder chamber 2a from the storage tank 4, and the sample liquid is drawn into the pipe 9 from the storage tank 5 through the nozzle 10 of the pipe 9.

Since the diameter ratio D1/D2 of the two different diameter portions la and lb is small, the amount of sample liquid sucked is small, so the sample liquid is not sucked into the cylinder chamber 2b and is stored in the pipe 9. .

Next, when the piston 1 is moved upward, the diluent sucked into the cylinder chamber 2a is transferred to the three-way valve 6, the piping 11, and the cylinder chamber 2b.
, is discharged from the nozzle portion 10 through the pipe 9.

At this time, the sample liquid in the pipe 9 is discharged together with the diluent.

The dilution ratio in this example is based on the same concept as in the above example.

In other words, the dilution factor is the stroke of piston 1. It is not affected by

3 and 4 show further embodiments of the present invention, in which the piston has different diameter portions 1a,
An example is shown in which the cylinder 2 is formed in a shape corresponding to the shape of the piston 1 while three lb, lc... An example of the configuration is shown.

As explained above, in the mixer of the present invention, one piston is provided with different diameter parts, and the different diameter parts are arranged so that the mixing ratio of the fluids to be mixed is determined by the difference in the cross-sectional area of the different diameter parts. The fluid is inserted into each separate cylinder chamber, and as the piston reciprocates, the fluid is sent out through the piping that communicates with the cylinder chamber - and the fluid is sent out through the piping that communicates with the other cylinder chamber. Since the mixing ratio of the fluids to be mixed is determined by the difference in cross-sectional area of the different diameter portions of the piston, it can be made unaffected by the stroke of the piston. Since the fluids to be mixed are always sent out through the pipes communicating with each cylinder chamber, there is no error in the mixing ratio.

Therefore, even when the piston reciprocates irregularly, mixing is performed at a mixing ratio determined by the cross-sectional area of each diameter portion of the piston.

Since the mixing ratio is always fixed at a constant value, mixing can be performed with high precision. For example, when a sample liquid to be analyzed and a diluted liquid must be mixed with high precision. It can be suitably used for.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is an overall configuration diagram of one embodiment, FIG. 2 is an overall configuration diagram of another embodiment, and FIGS. 3 and 4 are each of the invention. FIG. 7 is an explanatory diagram showing still other embodiments of the present invention. 1...Zeston, 1a, 1b, 1c...Different diameter portions, 2a, 2b, 2c...Cylinder chamber, 9.
Pl. P2...Piping.

Claims (1)

[Scope of utility model registration request] One piston is provided with different diameter parts, and the different diameter parts are inserted into different cylinder chambers so that the mixing ratio of the fluids to be mixed is determined by the difference in the cross-sectional area of the different diameter parts. As the piston reciprocates, the fluid -, which is sent out through the piping that communicates with the cylinder chamber -, and the other fluid that is sent out through the piping, which communicates with other cylinder chambers, are mixed. A mixer characterized by its bark.