JP7365079B2 - Stirring bars, stirring devices and stirring systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to a stirring rod and a stirring device and stirring system using the stirring rod.

For example, Patent Document 1 describes a stirring device using a magnet, which uses a sensor unit that measures the physical properties of a substance such as a solution or particles, and a rotor equipped with a magnetic material to sense the physical properties and stir the substance. A stirring device is disclosed.

Japanese Patent Application Publication No. 2011-20024

However, in the stirring device disclosed in Patent Document 1, there is a risk that the substance may be ground due to the rotation of the rotor at the bottom of the container, and depending on the substance, stirring may not be optimal. Further, in order to heat or keep warm the substance to be stirred, a hot plate is used to heat the container from the bottom, but depending on the substance, heating may not be optimal.

An object of the present invention is to provide a stirring device capable of stirring under optimal stirring conditions.

In order to solve the above problems, the stirring device of the present invention includes a stirring bar including a magnet and a detection means for detecting the characteristics of a solution to be stirred, a container containing the solution, and a main body portion on which the container is placed. The stirring bar is characterized in that the stirring bar is oscillated by the magnetic force of a magnetic body provided in the main body.

According to the present invention, it is possible to provide a stirring device capable of stirring under optimal stirring conditions.

1 is a schematic diagram of a stirring device 100 according to the present invention. (A) It is a partial sectional view of stirring bar 10A of Example 1A. (B) It is a partial sectional view of stirring bar 10B of Example 1B. (C) It is a partial sectional view of stirring bar 10C of Example 1C. (A) It is a partial sectional view of stirring bar 20A of Example 2A. (B) It is a partial sectional view of stirring bar 20B of Example 2B. (A) It is a partial sectional view of stirring bar 30A of Example 3A. (B) It is a partial sectional view of stirring bar 30B of Example 3B.

(Embodiment)
Hereinafter, exemplary embodiments for carrying out the present invention will be described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative positions of constituent elements, etc. explained in the following examples are arbitrary and can be changed according to various conditions. Further, unless otherwise specified, the scope of the present invention is not limited to the examples specifically described below. Note that in this specification, up and down correspond to upward and downward directions in the direction of gravity, respectively.

FIG. 1 is a schematic diagram of a stirring device 100 to which the swinging member (stirring bar) of the present invention can be applied, and the stirring device 100 will be described with reference to FIG. The stirring device 100 includes a swinging member (resin tube 1), a support member 5 that supports the swinging member, a vial 6 (container) containing a solution, a lid member 7, a vibration-proof silicone sheet 8, and a vial 6. It is equipped with a magnetic stirrer 9 (main body). The anti-vibration silicone sheet 8 is used by being placed between the vial 6 and the magnetic stirrer 9.

By moving a magnetic body (not shown) provided in the magnetic stirrer 9, the swinging member swings due to the magnetic force of the magnetic body. The stirring device 100 enables non-sliding stirring using a so-called pendulum method, and the swinging member swings in a floating state, and the tip of the swinging member does not slide inside the vial 6, especially on the bottom surface. Contents are not crushed during stirring. Such a stirring device 100 is suitable for use in, for example, crystallization operations, molecular extension, solid-liquid dispersion, and the like.

The swinging member is composed of a fluororesin tube (resin tube 1), and in detail, a transparent fluororesin heat-shrinkable tube (heat resistant temperature 200° C.) is used. A magnet 2 is provided inside one end of the resin tube 1. A sealing member 3 made of fluororesin is disposed between the one end of the resin tube 1 and the magnet 2, and the resin tube 1 is sealed. (protected from solution). That is, all the liquid contact parts of the swinging member are made of fluororesin. Since the magnet 2 is a heat-resistant samarium cobalt magnet (heat-resistant temperature: 350° C.), it can cope with high temperature and high pressure conditions in sterilization processing.

Inside the resin tube 1, in addition to the magnet 2 and the sealing member 3, a means 4 for detecting the characteristics of the stirred solution (detection means) or a means 4 for promoting changes in the stirred solution (promotion means) is provided. The wiring 4a connected to the means 4 extends upward in the drawing. The other end of the resin tube 1, which is opposite to the one end, is fixed to a support member 5, and the support member 5 is placed on the entrance of the vial 6 and is fastened together with a lid member 7. A wiring 4a connected to the means 4 passes through the support member 5 and extends to the outside of the vial 6 from a hole 7a formed in the lid member 7. Hereinafter, each embodiment of the swinging member of the present invention will be described with reference to FIGS. 2(A) to 4(B).

(Example 1A)
FIG. 2(A) is a partial cross-sectional view of the swinging member (stirring bar 10A) of Example 1A of the present invention. The stirring bar 10A is equipped with a temperature sensor S1 which is a detection means for detecting the temperature of the solution. Although a thermocouple is exemplarily used as the temperature sensor S1, it is also possible to use other sensors. The temperature sensor S1 is provided between the magnet 2 and the resin tube 1 along the longitudinal direction of the magnet 2, and is protected from the solution by the resin tube 1. Further, one end side of the resin tube 1 is sealed with a sealing member 3. The wiring 4a from the temperature sensor S1 extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a temperature measurement unit (not shown).

Since the temperature sensor S1 is provided in the stirring bar 10A of Example 1A along the longitudinal direction of the magnet 2, the temperature of the solution in the vial 6 can be accurately detected. Furthermore, since the temperature sensor S1 is disposed on the side surface of the magnet 2 in this way, it can be manufactured relatively easily compared to existing configurations.

(Example 1B)
Next, Example 1B will be described, but the different configurations from Example 1A will be explained, and the description of similar configurations will be omitted. FIG. 2(B) is a partial cross-sectional view of the stirring bar 10B of Example 1B of the present invention. The stirring bar 10B is equipped with a temperature sensor S2 which is a detection means for detecting the temperature of the solution.

The temperature sensor S2 is composed of a thermocouple covered with an insulator. More specifically, the thermocouple is formed by filling a cup-shaped container with chemical resistance with an insulator and molding the thermocouple, and the thermocouple is protected from the solution by the filled insulator and the cup-shaped container. ing. The temperature sensor S2 is adjacent to the magnet 12 and is provided on one end side of the resin tube 1 instead of the sealing member 3 in Example 1A.

The magnet 12 has a through hole 12a formed in the center of the magnet 12 and extending in the longitudinal direction through which the wiring 4a from the temperature sensor S2 passes. The wiring 4a passes through the through hole 12a, extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a temperature measurement unit (not shown). .

Since the stirring rod 10B of Example 1B is provided with the temperature sensor S2 at the tip of one end of the stirring rod 10B, the temperature sensor S2 can be completely immersed in the solution, and the temperature sensor S2 can be completely immersed in the solution. The temperature of the solution can be detected accurately. Further, since the temperature sensor S2 is provided in place of the sealing member 3, the size of the stirring rod 10B is approximately the same as the existing one.

(Example 1C)
Next, Example 1C will be described, but the different configurations from Examples 1A and 1B will be explained, and the description of similar configurations will be omitted. FIG. 2(C) is a partial cross-sectional view of the stirring bar 10C of Example 1C of the present invention. The stirring bar 10C is equipped with a temperature sensor S3 which is a detection means for detecting the temperature of the solution. Temperature sensor S3 is covered with an insulator and protected from the solution as in Example 1B.

The temperature sensor S3 is provided adjacent to the magnet 2 on the opposite side of the sealing member 3. One end of the resin tube 1 is sealed with a sealing member 3. The wiring 4a from the temperature sensor S3 extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a temperature measurement unit (not shown).

Since the stirring bar 10C of Example 1C is provided with the temperature sensor S3 on the opposite side to the one end side of the stirring bar 10C, the temperature of the solution in the upper layer of the vial 6 can be accurately detected. Furthermore, since the temperature sensor S3 is disposed above the magnet 2 in this way, it can be manufactured relatively easily compared to existing configurations.

As described above, each of the stirring rods 10A to 10C of Examples 1A to 1C has a built-in temperature sensor S1 to S3, so there is no need to arrange a separate sensor. Further, since the stirring rods 10A to 10C containing the temperature sensors S1 to S3 stir like pendulums, there is no risk of grinding the substance during stirring. According to Examples 1A to 1C, since the temperature of the solution can be measured, it is possible to detect the stirring conditions related to temperature. The temperature can be adjusted using a heating device (not shown). According to the present invention, it is possible to provide stirring rods 10A to 10C that can stir under optimal stirring conditions, and to provide a stirring device 100 equipped with any one of such stirring rods 10A to 10C.

(Example 2A)
FIG. 3(A) is a partial cross-sectional view of a stirring bar 20A of Example 2A of the present invention. The stirring bar 20A is equipped with a heater H1, which is a promoting means for heating the solution and promoting change (reaction) in the solution. Although a film heater is illustratively used as heater H1, other forms of heating elements can also be used. Heater H1 is provided between magnet 2 and resin tube 1 and is protected from the solution. Further, the heater H1 has a tube-like or sheet-like shape, and is arranged so as to partially surround the magnet 2 and the sealing member 3. One end of the resin tube 1 is sealed with a sealing member 3. The wiring 4a from the heater H1 extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a heater control unit (not shown).

Conventionally, heating has been carried out using a water bath, a hot water bath, or a heat block, but these heat the vial 6 from the outside, which increases the size of the device and does not directly heat the object to be stirred. On the other hand, since the stirring bar 20A of Example 2A is provided with a heater H1 over a wide area so as to surround a part of the magnet 2 and the sealing member 3, the solution in the vial 6 can be efficiently heated. can do. Further, since the heater H1 is disposed around part of the magnet 2 and the sealing member 3 in this way, it can be manufactured relatively easily with respect to the existing configuration. Furthermore, it is possible to combine the temperature sensor S2 of Example 1B and the temperature sensor S3 of Example 1C, and it becomes possible to heat the solution while measuring the temperature of the solution.

(Example 2B)
Next, Example 2B will be described, but the different configurations from Example 2A will be explained, and the description of similar configurations will be omitted. FIG. 3(B) is a partial cross-sectional view of the stirring bar 20B of Example 2B of the present invention. The stirring bar 20B is equipped with a heater H2, which is a promoting means for heating the solution and promoting change (reaction) in the solution.

Although a cartridge heater is illustratively used as heater H2, other forms of heating elements may also be used. A cartridge heater is a rod-shaped heating element with a heating wire protected by a metal pipe. The heater H2 is adjacent to the magnet 22 and is provided on one end side of the resin tube 1 instead of the sealing member 3 of Example 2A.

The magnet 22 has a through hole 22a formed in the center of the magnet 22 and extending in the longitudinal direction through which the wiring 4a from the heater H2 passes. The wiring 4a passes through the through hole 22a, extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a temperature measurement unit (not shown). .

Since the stirring rod 20B of Example 2B is provided with a heater H2 at the tip of one end of the stirring rod 20B, the heater H2 can be completely immersed in the solution, and the solution near the bottom of the vial 6 can be completely immersed. Can be heated. Furthermore, since the heater H2 is provided in place of the sealing member 3, the size of the stirring rod 20B is approximately the same as the existing one. Furthermore, the temperature sensor S1 of Example 1A or the temperature sensor S3 of Example 1C can be combined with the stirring rod 20B, making it possible to heat the solution while measuring the temperature of the solution.

As described above, since the stirring rods 20A and 20B of Examples 2A and 2B have the heater H1 and the heater H2 built-in, respectively, there is no need to arrange a separate heating element. Furthermore, since the stirring rods 20A and 20B containing the heaters H1 and H2 stir like pendulums, there is no risk of grinding the substance during stirring. According to Examples 2A and 2B, since the solution can be heated, stirring rods 20A and 20B that can be stirred under stirring conditions that provide an optimal temperature are provided, and the stirring rods 20A and 20B are A stirring device 100 equipped with either of these can be provided.

(Example 3A)
FIG. 4(A) is a partial cross-sectional view of a stirring rod 30A according to Example 3A of the present invention. The stirring bar 30A includes a light emitter L1 that irradiates the solution and generates light of a specific wavelength, which is a promoting means for promoting change (reaction) in the solution. Although LED lighting is exemplarily used as the light emitter L1, it is also possible to use other forms of light emitting elements. The light emitting body L1 is adjacent to the magnet 32 and is provided on one end side of the resin tube 1 instead of the sealing member 3 of Example 1A.

The magnet 32 is formed with a through hole 32a extending in the longitudinal direction at the center of the magnet 32, through which the wiring 4a from the light emitter L1 passes. The wiring 4a passes through the through hole 32a, extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a lighting control unit (not shown). .

Since the stirring bar 30A of Example 3A is provided with the luminous body L1 at the tip of one end of the stirring bar 30A, the luminous body L1 can be completely immersed in the solution, and the luminous body L1 can be completely immersed in the solution. The solution can be irradiated. Furthermore, since the light emitter L1 is provided in place of the sealing member 3, the size of the stirring rod 30A is approximately the same as the existing one. By irradiating the solution, it is possible, for example, to promote photosynthesis.

(Example 3B)
Next, Example 3B will be described, but the different configurations from Example 3A will be explained, and the description of similar configurations will be omitted. FIG. 4(B) is a partial cross-sectional view of the stirring bar 30B of Example 3B of the present invention. The stirring bar 30B is equipped with a light emitter L2 that is a promoting means for irradiating the solution and promoting change (reaction) in the solution.

The light emitter L2 is provided adjacent to the magnet 2 on the opposite side of the sealing member 3. One end of the resin tube 1 is sealed with a sealing member 3. The wiring 4a from the light emitter L2 extends inside the resin tube 1, extends from the hole 7a of the lid member 7 of the vial 6 (not shown) to the outside of the vial 6, and is connected to a temperature measurement unit (not shown).

Since the stirring bar 30B of Example 3B is provided with the light emitter L2 on the side opposite to the one end side of the stirring bar 30B, the solution in the upper layer of the vial 6 can be irradiated. Further, since the light emitting body L2 is disposed above the magnet 2 in this way, it can be manufactured relatively easily compared to the existing configuration.

As described above, since the stirring rods 30A and 30B of Examples 3A and 3B have the light emitter L1 and the light emitter L2 built-in, respectively, there is no need to arrange a separate lighting element. Further, since the stirring rods 30A and 30B containing the light emitters L1 and L2 stir like pendulums, there is no risk of grinding the substance during stirring. According to Examples 3A and 3B, since the solution can be irradiated, stirring rods 30A and 30B that can be stirred under stirring conditions that provide the optimum illumination intensity are provided, and the stirring rods 30A and 30B of such stirring rods 30A and 30B are A stirring device 100 equipped with either of these can be provided.

The stirring device 100 of the present invention constitutes a stirring system in which the drive cycle of the magnetic material provided in the magnetic stirrer 9, the drive of the promoting means, etc. are controlled by a control device (not shown) based on the detected value of the detection means. be able to.

1 Resin tube 2, 12, 22, 32 Magnet 6 Vial (container)
9 Magnetic stirrer (main body)
10A, 10B, 10C Stirring rod 20A, 20B Stirring rod 30A, 30B Stirring rod 100 Stirring device H1, H2 Heater (promotion means)
L1, L2 Luminous body (promotion means)
S1, S2, S3 temperature sensor (detection means)

Claims (7)

A stirring bar comprising a magnet and a heater that heats a solution to be stirred or a light emitter that irradiates the solution to be stirred ,
The stirring rod is made of a resin tube, and the magnet and the heater or the light emitting body are provided adjacent to each other in the longitudinal direction of the stirring rod in the resin tube,
A stirring bar, wherein the stirring bar is swingable by magnetic force. A stirring bar that includes a magnet and a heater that heats a solution to be stirred ,
The stirring bar is made of a resin tube, and the heater is provided between the magnet and the resin tube in the resin tube,
A stirring bar, wherein the stirring bar is swingable by magnetic force. The stirring rod according to claim 1, wherein the heater or the light emitter is provided at the tip of one end of the stirring rod. The stirring bar according to claim 1, wherein a sealing member, the magnet, and the light emitting body are provided in this order from the tip on one end side of the stirring bar. 5. The stirring bar according to claim 1, wherein the light emitter generates light of a specific wavelength and irradiates the solution. The stirring bar according to any one of claims 1 to 5 ,
a container containing the solution;
A main body part on which the container is placed,
The stirring device includes a magnetic body in the main body, the magnetic force is generated by the magnetic body, and the stirring bar is oscillated by the magnetic force. A stirring system for controlling the stirring device according to claim 6 .

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