JP3203742U - Sunflower for magnetic stirrer - Google Patents

Abstract

Provided is a magnetic stirrer slat that enables a magnetic stirrer to rotate in a container even when the container is placed on the slat in a constant temperature water bath. A bearing 11 is mounted on the upper and lower sides of a fixed shaft 10 that extends downward from the center of the back surface of the top plate 2 of the magnetic stirrer slat 1. That the bases 13 and 14 are fixed to the upper and lower ends of the cylindrical body 12, the fixed shaft 10 protrudes from the cylindrical body 12 at both ends and penetrates the bases 13 and 14, The magnet 7 is fixed to the upper surface of the base 13 and the magnet 8 is fixed to the lower surface of the base 14. When the motor driving magnet rotates, the rotating magnet unit 4 rotates and magnetic stirring in the container is performed. The child rotates. [Selection] Figure 2

Description

  The present invention relates to a slat used for a thermostatic water tank of a magnetic stirrer.

  As shown in FIG. 5 of Patent Document 1 and FIG. 5 of Patent Document 2, as devices for stirring the water in the constant temperature water tank to equalize the water temperature and adjusting the temperature of the sample in the container placed in the water tank, A magnetic stirrer that performs stirring by rotating a magnetic stirrer disposed in a water tank is generally known.

JP-A-3-232524 JP 2008-62209 A

  The magnetic stirrer is a rod-shaped magnet covered with plastic, and is rotated by rotation of a driving magnet attached to a motor provided under the thermostatic water bath.

  As shown in FIG. 5 of the present application, in the magnetic stirrer 30, a stool 32 is placed in a constant temperature water tank 31, and a container 34 containing a sample 33 is placed thereon to maintain an appropriate height. .

  In this case, the magnetic stirrer 35 is on the constant temperature water tank bottom 36 and is rotated by a driving magnet 38 that is rotated by driving a motor 37 installed under the bottom 36, and the temperature is adjusted by a heater 39. The water temperature in the constant temperature water tank is made uniform by stirring the water in 31 or warm water.

  However, since the container 34 is on the slat 32 and has a distance, the magnetic force does not reach and it is impossible to put the magnetic stir bar 35 in the container 34 and rotate it by the driving magnet 38.

  Therefore, in order to immediately make the temperature of the sample 33 in the container 34 on the slats 32 uniform, as shown in FIGS. 1 to 4 of Patent Document 1, a stirring blade is inserted into the container from above the container. It had to be put in and operated with another drive or manually stirred by a human.

  However, when the blade is operated using another driving device, there is a problem that the weight of the magnetic stirrer including the driving device is greatly increased, the size is increased, and the manufacturing cost is increased. It was.

  Some samples 33 are inappropriate for the blade material, and the blade material cannot be uniform. Furthermore, when mixing a liquid and a solid, there is a possibility that the solid is cut with a blade and the tissue of the individual is decomposed. Furthermore, when the container mouth is thin, it may be difficult to mix with a blade.

  In addition, depending on the manufacturer of the magnetic stirrer, the position of the heater 39 in the thermostatic water tank 36 is different. Therefore, depending on the magnetic stirrer to be used, a slat that matches the position of the heater must be used. It was bulky and inconvenient.

  The present invention has been made to solve the above-described problem, and enables the magnetic stirrer to be rotated in the container even when the container is placed on the slats in the thermostatic water bath. It is to provide a slat for a magnetic stirrer.

  Another object of the present invention is to provide a magnetic stirrer that can be used even if the position of the heater of the thermostatic water tank is different by making the position of the leg portion of the snowboard movable.

  It is another object of the present invention to provide a magnetic stirrer slat that can efficiently homogenize the temperature of the sample in a short time by efficiently stirring the sample in the container and the water in the thermostatic bath or the hot water simultaneously.

  In order to achieve the above object, the first feature of the magnetic stirrer slats according to the present invention is that a top plate provided in a thermostatic water tank of the magnetic stirrer and provided with a plurality of holes, and the top plate Magnetic stirrer that is composed of a plurality of legs extending downward from the back surface of the magnetic stirrer, and uses a magnetic stirrer placed on a top plate and containing a sample and a magnetic stirrer In the slat, the center of the back surface of the top plate is provided with a fixed shaft extending downward, and a cylindrical body rotatably mounted with a bearing mounted on the shaft. A plate-shaped base is fixed to each of the upper end and the lower end of the cylindrical body so as to penetrate the fixed shaft. The upper surface of the upper base and the lower surface of the lower base are arranged on the left and right sides of the base. Magnets are installed at the ends of the Each base is configured to rotate around the axis of the fixed shaft together with the magnets in a thermostatic water tank, and the magnetic stirrer in the container rotates as the magnets rotate to stir the sample. At the same time, each base is rotated, so that water or hot water in the thermostatic water tank can be stirred.

  A second feature of the magnetic stirrer slat according to the present invention is that the magnets in the first feature are circular.

  Furthermore, a third feature of the magnetic stirrer slats according to the present invention is that each of the magnets in the first or second feature is a samarium cobalt magnet.

  Furthermore, a fourth feature of the magnetic stirrer slat according to the present invention is that each of the bearings in any one of the first to third features is an oilless bearing.

  The fifth feature of the magnetic stirrer slats according to the present invention is that the top plate according to any one of the first to fourth features is provided with the legs equidistant from the central direction toward the circumferential direction. The same number of notches are formed, and the legs can be fixed at an arbitrary position on the top plate by inserting a screw from above the notch and screwing it onto the head of the leg. It is in.

  Furthermore, a sixth feature of the magnetic stirrer slat according to the present invention is that the upper end base in any one of the first to fifth features is a blade that protrudes at both ends and bends downward. The base of the lower end forms a blade that protrudes at both ends and bends upward.

  Furthermore, a seventh feature of the magnetic stirrer slat according to the present invention is that each blade in the sixth feature protrudes in a direction perpendicular to the longitudinal axis of each base. .

  The eighth feature of the magnetic stirrer slat according to the present invention is that the blades in the sixth or seventh feature are alternately projected in opposite directions.

  Furthermore, the ninth feature of the magnetic stirrer slats according to the present invention is that the base of the lower end in any one of the sixth to eighth features is longer in the longitudinal direction than the base of the upper end. The blades formed on the lower base are longer than the blades formed on the upper base in the longitudinal direction.

  Furthermore, the tenth feature of the magnetic stirrer slats according to the present invention is that two magnets installed on the base of the upper end in any one of the first to ninth features overlap each other. It is to be provided.

  According to the present invention, since it is possible to agitate the sample in the container without requiring an apparatus other than the magnetic stapler body, the entire apparatus can be reduced in size and weight, and can be easily moved. At the same time, it can be manufactured at a low cost.

  In addition, because the position of the slatted leg can be adjusted according to the position of the heater in the thermostatic water tank, it becomes possible to handle different magnetic stirrers from different manufacturers with one slat, reducing extra costs and storage space. be able to.

  Furthermore, the blades provided in the base sufficiently stir the water or warm water in the constant temperature water tank, and simultaneously stir both the sample in the container and the water or warm water in the constant temperature water tank. It becomes possible to make the temperature uniform even more efficient.

It is a top view in the 1st example of the magnetic stirrer slats concerning the present invention. It is front sectional drawing of the AA line of FIG. It is a front view of the magnetic stirrer slats according to the present invention. It is sectional drawing of the magnetic stayer which shows the state using the said slats. It is sectional drawing of the magnetic stayer which shows the state using the conventional slats. It is a top view in the 2nd example of the magnetic stirrer slats concerning the present invention. It is a front view of the magnetic stirrer slats in the second embodiment. It is a right view of the magnetic stirrer slats in the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIGS. 1 to 4 show a first embodiment of the present invention. Among these, FIGS. 1 to 3 are overall schematic views of a magnetic stirrer slat according to the first embodiment.

  In the drawing, reference numeral 1 denotes a magnetic stirrer slat formed of stainless steel, which is roughly composed of a top plate 2, a leg portion 3 and a rotating magnet portion 4.

  The top plate 2 is a circular plate, and a plurality of circular holes 5 are formed so as to be easily submerged in water. A plurality of columnar legs 3 are connected to the four corners of the back surface of the top plate 2 via screws 6. In the illustrated example, four leg portions 3 are provided.

  Moreover, the rotating magnet part 4 is attached to the center part of the back surface of the top plate 2 so that rotation is possible. The rotating magnet unit 4 includes magnets 7 and 8 and is a member for rotating them.

  The rotating magnet unit 4 includes a fixed shaft 10 fixed to the center of the back surface of the top plate via a screw 9, a pair of bearings 11 attached to the fixed shaft 10, and the bearing 11 fitted therein. A cylindrical body 12 into which the fixed shaft 10 is loosely inserted, plate-like bases 13 and 14 fixed to the upper and lower ends of the cylindrical body 12, and magnets 7 and 8 fixed to the bases 13 and 14. Has been.

  The fixed shaft 10 is shorter than the leg portion 3 and fixed to the center of the back surface of the top plate 2 downward. The length in the longitudinal direction of the rotating magnet part 4 is also shorter than the leg part 3 and is formed so as to fit inside the lower part of the snowboard 1.

  Bearings 11 are respectively attached to the upper side and the lower side of the fixed shaft 10. The bearing 11 is for rotating the cylindrical body 12 in which they are fitted, and is composed of a flange 17 and a cylindrical body 18. The cylindrical body 18 includes a bearing.

  Holes are formed in the central portions of the bases 13 and 14, respectively, and the cylindrical body 18 of the bearing 11 is fitted into the holes from above the base 13 and below the base 14, and the flange 17 is provided at the base. Locked on the base 13 and under the base 14. The bearing 11 is preferably an oilless bearing.

  Magnets 7 are fixed to both ends of the upper surface of the base 13 fixed to the upper end of the cylindrical body 12. In addition, magnets 8 are fixed to both ends of the lower surface of the base 14 fixed to the lower end of the cylindrical body 12.

  The magnets 7 and 8 have a circular shape with a circular hole formed in the center, and are fixed to the bases 13 and 14 via screws 15 and 16, respectively. The magnets 7 and 8 are arranged so that one is an N pole and the other is an S pole. Moreover, the magnets 7 and 8 desirably have a strong magnetic force, for example, samarium cobalt magnets are suitable. In the illustrated example, the magnets 7 are doubled, but the number, shape, etc. are not limited as long as the magnetic force and height can be adjusted.

  An upper end and a lower end of the fixed shaft 10 protrude from the cylindrical body 12 and penetrate the bases 13 and 14.

  Next, the operation of the snowboard 1 will be described with reference to FIG. In FIG. 4, the snowboard 1 is installed in a constant temperature water tank 21 of a magnetic stirrer 20, and water or hot water adjusted to an appropriate temperature by a heater 22 is stored in the constant temperature water tank 21.

  A container 27 containing a sample 26 is placed on the top plate 2 of the snowboard 1, and a magnetic stirrer 28 is disposed at the bottom of the container 27. The north pole of the magnetic stir bar 28 faces the south pole of the magnet 7, and the south pole of the magnetic stir bar 28 faces the north pole of the magnet 7.

  A motor 24 is installed below the thermostatic water tank bottom 23, and a pair of drive magnets 25 are attached to the tip of the drive shaft of the motor 24. The north pole of the drive magnet 25 faces the south pole of the magnet 8, and the south pole of the drive magnet 25 faces the north pole of the magnet 8.

  When the driving magnet 25 is rotated by the motor 24, a rotating magnetic field is formed around the magnet 8, and the rotating magnet unit 4 rotates. As a result, the magnet 7 rotates and a rotating magnetic field is formed around the magnetic stirrer 28. The magnetic stirrer 28 rotates in the direction of rotation of the magnetic field, whereby the sample 26 in the container 27 is stirred, and the temperature in the container can be made uniform in a short time.

Next, FIGS. 6 to 8 show a second embodiment of the present invention.
In the second embodiment, the leg portion 3 can be moved in accordance with the position of the heater 22 of the thermostatic water tank 21 in the first embodiment, and the blades 42, 43, 44, 45 are attached to the rotating magnet portion 4. Is provided to facilitate stirring of the water in the constant temperature water tank 21 or the hot water.

  That is, the top plate 2 is formed with four notches 41 that are the same number as the legs 3 at equal intervals from the central direction toward the circumferential direction. The width of the notch 41 is formed so that the screw portion of the screw 6 penetrates and is smaller than the head of the screw 6. Therefore, after the leg 3 is disposed at an appropriate position along the notch 41, the screw 3 is screwed onto the head threaded portion of the leg 3 from above the top plate 2, so that the leg 3 is Fixed to the plate 2. Thereby, it becomes possible to use the snowboard 1 for the magnetic stirrer which has various constant temperature water tanks 21 in which the positions of the heaters 22 are different.

  In addition, the blades 42 and 43 are configured such that both end portions of the base 13 are alternately projected in the opposite directions in the direction perpendicular to the longitudinal axis and bent downward. In the illustrated example (FIGS. 6 and 7), the left blade 42 protrudes forward from the base 13 and bends downward, and the right blade 43 protrudes rearward from the base 13 and bends downward. Yes.

  Further, the blades 44 and 45 are configured such that both end portions of the base 14 are alternately projected in a direction perpendicular to the longitudinal axis and bent upward. In the illustrated example (FIGS. 6 and 7), the left blade 44 protrudes backward from the base 14 and bends upward, and the right blade 45 protrudes forward from the base 14 and bends upward. Yes.

  In the illustrated example, the base 14 has a longer length in the longitudinal direction than the base 13 and is formed in a horizontally long shape, and the blades 44 and 45 are arranged outside the blades 42 and 43. .

  With the above configuration, when the rotating magnet unit 4 rotates, the water or hot water in the constant temperature water tank 21 is swung over a wide range by the blades 42, 43, 44, and 45, and stirring is performed well. Thereby, the water in the constant temperature water tank 21 or the warm water can be made uniform in a short time.

  In addition, since both the sample 26 in the container 27 and the water in the constant temperature water tank 21 or hot water can be stirred at the same time, the temperature can be made uniform in and out of the container 27 in a short time, and the temperature of the sample can be made uniform. Can be made more efficient.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the present invention is not limited to this, and can be implemented in various modes within the scope of the configuration described in the claims of the utility model registration. it can.

  In the present embodiment, the case of using a magnetic stirrer in which a constant temperature water tank is integrated has been described. However, the present invention is not limited to this, and can also be used for a magnetic stirrer in which the water tank is a separate body. .

DESCRIPTION OF SYMBOLS 1 Sunoko for magnetic stirrer 2 Top plate 4 Rotating part 7, 8 Magnet 10 Fixed shaft 11 Bearing 12 Cylindrical body 13, 14 Base 20 Magnetic stirrer 21 Constant temperature water tank 25 Rotating magnet 28 Magnetic stirrer 41 Notch 42, 43, 44, 45 feathers

Claims (10)

A magnetic stirrer slat that is installed in a constant temperature water tank of a magnetic stirrer and includes a top plate having a plurality of holes and a plurality of legs extending downward from the back surface of the top plate. In a magnetic stirrer slat that uses a container containing a sample and a magnetic stirrer placed on the top plate,
The center of the back surface of the top plate includes a fixed shaft extending downward, and a cylindrical body that is rotatably mounted with a bearing that is pivotally mounted on the shaft. A plate-like base is passed through the fixed shaft and fixed to the upper end and the lower end, and the upper surface of the upper base and the lower surface of the lower base are respectively connected to the left and right end portions of the base. Magnets are respectively installed, and each base is configured to be rotatable around the axis of the fixed shaft together with the magnets in the thermostatic water tank. When the magnets rotate, the magnets in the container are rotated. The stirrer is rotated to stir the sample, and at the same time, the bases are rotated so that the water in the constant temperature bath or hot water can be stirred.
A magnetic stirrer slat that features Each of the magnets is circular;
The magnetic stirrer slat according to claim 1, wherein: Each of the magnets is a samarium cobalt magnet;
The magnetic stirrer slat according to claim 1 or 2, characterized in that. Each of the bearings is an oilless bearing;
The magnetic stirrer slat according to any one of claims 1 to 3, characterized in that: The top plate is formed with notches of the same number as the leg portions at equal intervals from the center direction to the circumferential direction, and screws are inserted from above the notches and screwed to the head portions of the leg portions. By making it possible to fix the leg to an arbitrary position of the top plate,
5. The magnetic stirrer slat according to claim 1, wherein: The base at the upper end forms a blade that protrudes at both ends and bends downward, and the base at the lower end forms a blade that protrudes at both ends and bends upward,
The magnetic stirrer slat according to any one of claims 1 to 5, wherein Each of the blades protrudes in a direction perpendicular to the longitudinal axis of the base;
The magnetic stirrer slat according to claim 6 characterized by the above-mentioned. Each of the blades protrudes in the opposite direction alternately,
The magnetic stirrer slat according to claim 6 or 7, wherein The lower base is longer in the longitudinal direction than the upper base, and the blades formed on the lower base are disposed on the outer side in the longitudinal direction than the blades formed on the upper base. is being done,
The magnetic stirrer slat according to any one of claims 6 to 8, wherein The magnets installed on the base at the upper end are provided to be stacked two by two,
The magnetic stirrer slat according to any one of claims 1 to 9, wherein:

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