JP2007330956A - Method for mixing a plurality of liquids - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent overreaction, setting, and transformation in a pipe by quickly delivering and applying a coating liquid after stirring and mixing a coated quantity of even micro-litters or less in a coating work of chemicals, adhesives, pastes and the like and provide a micro-configuration of mixer that performs stirring and mixing with a number of pipes with each small diameter of several millimeters or less through which a micro-quantity of the liquid passes. <P>SOLUTION: A stirring/mixing device is provided which keeps a stirrer inserted into a pipe end halfway in the pipe and makes the stirrer rotate by a magnet that rotates around the periphery of the pipe to stir and mixes the liquid in the pipe. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

Provided is an agitation / mixing device in which a stirrer is mainly inserted in the middle of a pipe and inside a pipe end, and the stirrer is rotated by a magnet that circulates around the outer periphery of the pipe to stir and mix the liquid in the pipe.

In application work of liquids such as chemicals, adhesives, pastes, etc., while the application amount is a microliter or less, it is stirred and mixed and quickly discharged and applied to prevent overreaction, curing, and alteration in the pipe. The pipe diameter for handling a minute amount is often a small diameter of several millimeters or less, and the mixer for stirring and mixing is also required to have a minute structure.

Problems to be solved by the invention

The volume of the stirring section is small.

The stirrer is a micro member.

There is no mechanism in the piping to rotate the stirrer.

Means for solving the problem

A stirrer made of a magnetic material is inserted into the pipe through which the liquid flows, and the position and posture of the stirrer is maintained and rotated by a magnet that circulates around the outer periphery of the pipe, and the liquid in the pipe is stirred and mixed.

The stirrer is a piece of magnetic material such as a thin iron plate or a small piece of magnetic material coated with a resin, and has a shape and size that can be easily rotated and moved in the pipe and can be easily stirred and mixed.

When a small piece of magnetic material (mostly coated with fluororesin) is put on the bottom of a conventional flask or the like and placed on a table containing a disk that rotates the magnet piece, the stir bar rotates with the magnet, There is a stirrer that stirs and mixes the liquid in the container.

The stirrer stirs and mixes the whole liquid stored in the container, while the main object of the present invention is to stir and mix the liquid flowing through the pipe at that time.

The present invention is classified into three categories. One is a drive device (hereinafter referred to as a stirrer) that circulates a magnet on the outer periphery of the pipe, two is a stirrer, and three is an application device.

(Figure 1)

The basic configuration will be described in detail in the first embodiment.

The stirrer 1 is formed in a rectangular shape with a thin iron plate having a long hole 3 punched out in the center, and is inserted into the pipe 2 as a dimension capable of rotating and moving inside the pipe 2.

A rotor 5 in which a magnet 4 that rotates the outer periphery of the pipe 2 and has a magnetic surface facing the pipe 2 is connected to the rotary shaft 7 of the hollow shaft motor 6.

The stirrer 1 is attracted to the magnet 4 and stands upright on the inner wall surface of the pipe 2 to hold the position. When the rotary shaft 7 of the hollow shaft motor 6 rotates, the rotor 5 rotates, the magnet 4 circulates around the outer periphery of the pipe 2, and the stirrer 1 rotates in the pipe 2 in an upright posture.

When the liquid flows into the pipe 2, the stirrer 1 stirs the liquid. The liquid with high viscosity adheres to the wall surface and is difficult to stir and mix, but the stirrer 1 scrapes off the liquid on the inner wall surface of the pipe 2 so that the liquid is efficiently stirred and mixed. It is effective for two-component mixing of adhesives and color mixing of paints.

Since the stirrer 1 is a thin iron plate, it does not obstruct the flow of the liquid, and the resistance is small and the magnetic force of the magnet 4 is not passed away. Also, the long hole 3 reduces the resistance of rotation and breaks up the liquid to increase the effect of stirring and mixing.

If the magnet 4 is also installed at a position opposed to 180 degrees and the direction of the magnetic force is matched, the posture of the stirrer 1 can be more strongly maintained, and it can cope with a high rotation and high viscosity liquid. Further, since the stirrer 1 can be formed in a very small size, it can be applied to a microtube of several millimeters or less, and can be used for a microreactor, a fuel mixing device for a fuel cell, a two-component mixed adhesive mixer that can be reacted and cured in a short time, and the like. .

Since the stirrer and the rotating device of the magnet are completely separate members, the stirrer for piping (for example, the assembly of the rotor 5 and the hollow shaft motor 7 of Example 1; hereinafter referred to as a stirrer) and the stirrer are the same as the stirrer. Can be provided according to.

(Figure 2)

The stirrer 10 is formed in a cross shape with a thin iron plate in a bowl shape. (Figure 2)

The stirrer 11 rotatably supports the rotor 13 with a bearing 12. The rotor 13 has a hollow structure, and the magnet 14 and the magnet 15 are installed at the 90 ° position in the same cross section in the body portion 18, and the magnet 16 and the magnet 17 are installed at the same position in a slightly separated cross section.

A semicircular groove 22 is formed in the body portion 18. A motor 19 is installed in parallel with the rotor 13, and a pulley 21 is attached to the motor rotating shaft 20. The belt 23 is hung on the semicircular groove 22 and the pulley 21.

The bearing 12 and the motor 19 are held and attached to the mount 24.

Inside the pipe 2, the stirrer 10 is inserted and inserted into the inner diameter of the rotor 13. Since the bowl-shaped large-diameter portion is held at four points of the magnet 14, the magnet 15, the magnet 16, and the magnet 17 in the longitudinal direction and the cross-sectional direction of the stirrer 10, respectively, the rotational force of the stirrer 11 can be strongly received, and the high viscosity liquid And can stir and mix liquids with a high flow rate. The bowl-shaped constricted portion reduces the resistance to rotation and breaks up the liquid to increase the effect of stirring and mixing.

The stirrer 11 has a thin pedestal 24, so that a large number of stirrers 11 can be installed in the middle of the pipe.

The stirrer sensor 25 installed on the gantry 24 detects and transmits a signal when the stirrer 10 flows away from the holding force of the magnet. Further, the pipe 2 is provided with a smaller diameter portion than the stirrer 10 to prevent the stirrer from flowing out.

The motor 19 is an electric motor, an air motor or the like, and the number of rotations is selected by a control device.

(Figure 3)

The stirrer 20 is provided on a hollow rotor 21 with a magnet 22 having a magnetic surface facing upward and a magnet 23 having a magnetic surface facing inward. A motor 25 is installed on the upper surface of a pedestal 24 that receives the hollow rotor 21 in a rotatable manner, a pulley 26 is fixed to the rotating shaft of the motor 25, and the hollow rotor 21 is rotated by a belt 27.

When the stirrer 20 is not inserted into the pipe 2, if a stirrer is put into the container on the upper surface of the gantry 24, the stirrer 20 becomes a container stirrer, and a stirrer for both pipes and containers.

(Fig. 4)

Several examples of stirrers are described below. The stirrer 30 forms a constricted portion 31 at the center of a thin rectangular iron plate, and is twisted 90 degrees there. A saw blade 32 is engraved on the outer side.

The stirrer 30 scrapes off the liquid on the inner wall of the pipe with a saw blade 31 and divides the liquid to increase the efficiency of stirring and mixing.

(Fig. 5)

The stirrer 40 has a shape similar to a two-wire TV antenna wire, and is provided with rod-like magnetic bodies 31 and 32 on both sides and covered with a covering material 33 such as a fluorine resin. A hole 34 is provided in the center.

The coating material 33 prevents liquid contact with the metal and reduces friction with the inner wall of the pipe.
(In the following examples, description of magnetic material and coating material is omitted.)

(Fig. 6)

The stirrer 50 is bent at both ends of a rectangular thin iron plate to form tongues 51 and 52. The tongues 51 and 52 scrape off the liquid on the inner wall surface of the pipe to enhance the stirring and mixing effect.

(Fig. 7)

The stirring bar 60 connects a plurality of rings 61. Applicable even if the pipe is bent.

(Fig. 8)

The stirrer 70 has a spring shape. When rotating, a flow along the spiral is generated, which enhances the stirring and mixing effect.

(Fig. 9)

The stirrer 80 has blades 82 and 83 attached to a round bar 81. The fast flowing part in the center of the pipe is brought close to the inner wall surface by the round bar 81 to enhance the stirring and mixing effect.

(Fig. 10)

Several examples of application devices are described below. The stirrer 90 stirs and mixes two liquids (or a plurality of liquids). The stirrer and the mixing part are located at a position far away from the drive unit. It has been introduced. Examples of use include injection of a rapidly reacting liquid after mixing into a deep hole bottom, application of an adhesive in a nuclear reactor, a space station, etc., injection of a chemical into the body with a flexible member.

The stirrer 91 protrudes the rotor 92 long, and a magnet 93 is installed at the tip.
A pipe 94 is inserted into the hollow hole of the rotor 92. The pipe 94 is fixed to the gantry 95.
A nozzle 96 is attached to the tip of the pipe 94. A stirrer 97 is inserted into the pipe 94 in the vicinity of the magnet 93. The A liquid tube 98 and the B liquid tube 99 are inserted into the pipe 94 to the vicinity of the stirrer 97 and fixed with the fixing sleeve 100. A mixing chamber 103 is formed at the tip of the pipe 94.

A liquid A is sent a little from the A liquid pump 101, and then a B liquid is sent a little from the B liquid pump 102. If this is repeated, the liquid A and the liquid B are injected into the mixing chamber 103 so as to be stacked in layers. (Coarse mixing) When the stirrer 97 is rotated by the stirrer 91, the roughly mixed liquid A and liquid B are further mixed strongly and discharged from the nozzle 96.

The mixing chamber 103 can form a very small volume mixing chamber if the pipe diameter and stirrer dimensions are set to be small, and can quickly discharge after mixing an epoxy adhesive, an acrylic adhesive, etc., which have a quick reaction. Also, when the liquid is hardened by mistake, it is only necessary to discard the pipe and the stirring bar. The shape of the mixing chamber is simple and can be cleaned simply by flowing a cleaning solution.

Since the rotor 92 protrudes long, the magnet 93 can be installed in several stages and several stirring bars can be inserted to increase the number of stirring sections.

(Fig. 11)

The stirrer 110 is suitable for various sizes such as commercially available syringes and test tubes.
The stirrer 111 projects a hollow rotating shaft 112 from a pedestal 113. The rotor 115 on which the magnet 114 is installed has various inner diameters and is detachably attached to the rotating shaft 112.

A hole 116 is provided on the back surface of the gantry 113, and the sleeve 117 is detachably attached. The sleeve 117 has various inner diameters, and the inserted syringe 118 is fixed.

A rotor 115 and a sleeve 117 matched to the syringe 118 containing the liquid are attached to the stirrer 111, and the syringe 118 is inserted and attached. When the required stirrer 120 is put into the syringe 118 and the rotating shaft 112 is rotated, the liquid inside is stirred. The liquid in the syringe 118 is discharged from the nozzle 119 by means of piston insertion or air pressure feeding.

When a liquid feeding pipe is connected to the syringe 118 and the liquid is fed by a pump, the liquid can be continuously stirred and mixed. Conventional static mixer (inserts various wall materials into the pipe or branches and gathers the pipes to disturb the liquid flow and stirs), Dynamic mixer (stirs to the rotating shaft protruding outside the pipe) Compared with the case of connecting the child and rotating the rotating shaft with a motor or the like to stir, the structure of the wetted part is simple, there is little stagnation, cleaning is easy, and it can be adapted from a small size to a large size. In particular, the peeling effect of the liquid adhering to the inner wall is great and the mixing effect is excellent.

(Fig. 12)

When stirring a highly viscous liquid, the stirrer may swing more favorably than rotation. Furthermore, a stirrer is provided that promotes agitation and mixing by applying axial back and forth motion to the agitator.

The stirrer 120 is provided with a hollow shaft 121 that swings and moves back and forth in the axial direction. The rotor holding the magnet, the stirrer, etc. are the same as in Example 11.

The hollow shaft 121 is slowly swung and axially moved back and forth, and stirred and mixed so that frictional heat and kinetic energy are not added to the liquid.

Sectional view of Example 1 Sectional drawing of Example 2 Sectional drawing of Example 3 Three-dimensional view of Example 4 Three-dimensional view of Example 5 Three-dimensional view of Example 6 Three-dimensional view of Example 7 Three-dimensional view of Example 8 Three-dimensional view of Example 9 Partial sectional view of Example 10 Partial sectional view of Example 11 Partial sectional view of Example 12

Explanation of symbols

1: Stirrer 2: Piping 3: Long hole 4: Magnet 5: Rotor 6: Hollow shaft motor 7: Rotating shaft

Claims (4)

It is composed of a hole that penetrates the mount, a hollow rotating shaft that is exposed from this hole, a hollow rotor that is attached to this rotating shaft, and a magnet that is attached with the magnetic surface facing the through hole of this rotor. And a stirrer made of a magnetic material that holds the posture and position by the magnetic force of the magnet, and the stirrer as the rotor rotates. A stirring device that rotates. It is composed of a hole that penetrates the mount, a hollow rotating shaft that is exposed from this hole, a hollow rotor that is attached to this rotating shaft, and a magnet that is attached with the magnetic surface facing the through hole of this rotor. A stirrer. A stirrer for piping that has a hole in the center of a rectangular thin steel plate. A method of discharging a small amount of a plurality of liquids into a single pipe at a time difference, and inserting the pipe into the stirring device according to claim 1 to stir and mix the liquid in the pipe.

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