Multi-head magnetic stirrer for oil bath

Abstract

The utility model relates to the technical field of chemical experiments, and discloses a multi-head magnetic stirrer for oil bath, which comprises a plurality of groups of magnetic stirrers and a plurality of groups of oil bath pans arranged on the magnetic stirrers, each magnetic stirrer comprises a base, an accommodating cavity matched with the oil bath pans is arranged on the upper surface of the base, and the oil bath pans are arranged in the accommodating cavity. A containing cavity is formed in the machine base, a heating table is arranged at the position, at the bottom of the containing cavity, of the machine base, the oil bath pan is arranged on the heating table, a rotating module and a magnet arranged at the output end of the rotating module are arranged in the machine base, a heating coil is arranged in the heating table, and a stirrer is arranged at the bottom of the oil bath pan.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical experiments, in particular to a multi-head magnetic stirrer for oil bath. Background Art

[0002] In chemical synthesis reactions, water bath heating usually cannot meet the needs for high-temperature synthesis. For high-temperature heating of 100℃-300℃, an oil bath method is often used. In order to make the reaction temperature uniform, a stirring device is usually configured to stir the liquid raw materials in the reaction container to make its temperature uniform.

[0003] In some parallel experiments, stirring speed is often an important indicator for considering experimental parallelism. To achieve consistent stirring speed in each parallel test, the same stirrer has to be used for multiple times, which is time-consuming and laborious. In view of this, researchers in this field have designed a multi-head magnetic stirrer for oil bath. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a multi-head magnetic stirrer for an oil bath, which is convenient for conducting parallel tests on multiple groups of experimental solutions.

[0005] The technical solution of the utility model is: a multi-head magnetic stirrer for oil bath, comprising a plurality of groups of magnetic stirrers and a plurality of groups of oil bath pots arranged on the magnetic stirrers, the magnetic stirrer comprising a machine base, the upper surface of the machine base is provided with a receiving cavity adapted to the oil bath pot, the machine base is provided with a heating platform at the bottom of the receiving cavity, the oil bath pot is arranged on the heating platform, a rotating module and a magnet arranged at the output end of the rotating module are arranged in the machine base, a heating coil is arranged in the heating platform, and a stirring bar is arranged at the bottom of the oil bath pot.

[0006] It can be seen from the above scheme that heating oil is stored in the oil bath pot for oil bath heating of the container in the oil bath pot, the heating platform realizes heating at the bottom of the oil bath pot through the electric heating wire, the rotating module is used to perform multiple groups of magnetic stirring, the limit block limits the stirring bar through the placement groove to prevent the stirring bar from falling, the magnet and the stirring bar realize electromagnetic induction, drive the stirring bar to rotate, and realize uniform stirring of the liquid in the container in the oil bath pot, the oil bath pot and the heating platform are separately arranged, so that the oil bath container can be replaced according to different experimental design schemes when performing a series of experiments such as temperature changes.

[0007] The rotating module includes a driving motor, a first gear arranged at the output end of the driving motor, and a plurality of second gears arranged on the outside of the first gear, the second gear meshes with the first gear for transmission, the rotating shaft of the driving motor passes through the limit plate and is connected to the first gear through a bearing, a bearing plate is arranged on the top of each of the second gears, a mounting groove is arranged on the bearing plate, and the magnet is installed in the mounting groove. It can be seen that the driving motor is used to drive the first gear to rotate, and a plurality of second gears mesh with the outside of the first gear to realize synchronous rotation in the same direction, and the plurality of second gears are used to drive the bearing plate to rotate, thereby realizing the rotation of the magnet, facilitating synchronous magnetic stirring in the same direction, and facilitating parallel experiments. The rack transmission is used to replace the traditional pulley transmission, so that it has the characteristics of smooth transmission, precise transmission ratio, reliable operation, high efficiency, long life, and a wide range of power, speed and size.

[0008] The base is provided with a limit frame, the limit frame is sleeved with a mounting rod, the end of the mounting rod is provided with a first claw, the mounting rod is connected with an adjustment block, the adjustment block is penetrated with an adjustment rod, and the adjustment rod is provided with a second claw parallel to the first claw. It can be seen that the mounting rod is used to be sleeved on the limit frame to adjust the clamping height, and the adjustment block is used to adjust the telescopic length of the adjustment rod to achieve the spacing between the first claw and the second claw.

[0009] A limiting frame is provided below the oil bath pot, and a plurality of through slots are provided on the limiting frame, and the stirring bar is placed between the bottom wall of the oil bath pot and the limiting frame. It can be seen that the through slots facilitate the circulation of the heating oil in the oil bath pot.

[0010] The front side of the base is provided with a console protruding therefrom, the surface of the console is provided with a display screen and control buttons, the heating coil is electrically connected to a controller, and the control buttons are electrically connected to the controller. It can be seen that the control buttons are used to control the heating coil to achieve temperature adjustment, and the controller is used to achieve temperature control.

[0011] The mounting grooves on the surfaces of the plurality of the bearing plates are all located on the same side. It can be seen that the magnets are respectively mounted on the same side of the plurality of the bearing plates, and when rotating, the distances between the magnets in the adjacent limiting grooves are always equal, so that it is convenient to maintain the balance of the influence of the multiple magnetic forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross-sectional view of the utility model;

[0014] Figure 3 It is a structural diagram of the transmission module;

[0015] Figure 4 yes Figure 2 Schematic diagram of the structure at A in the middle. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0017] like Figures 1 to 4 As shown, the utility model is a multi-head magnetic stirrer for oil bath, comprising a plurality of groups of magnetic stirrers 1 and a plurality of groups of oil bath pots 2 arranged on the magnetic stirrers 1, the magnetic stirrer 1 comprising a machine base 3, the upper surface of the machine base 3 is provided with a receiving cavity 31 adapted to the oil bath pot 2, the machine base 3 is provided with a heating platform 4 at the bottom of the receiving cavity 31, the oil bath pot 2 is arranged on the heating platform 4, a rotating module 5 and a magnet 6 arranged at the output end of the rotating module 5 are arranged in the machine base 3, a heating coil 7 is arranged in the heating platform 4, and a stirring rod 8 is arranged at the bottom of the oil bath pot 2. In this embodiment, the heating oil in the oil bath pot 2 is silicone oil, and a supporting foot is provided at the bottom of the magnetic stirrer 1. The utility model can perform oil bath heating and mixing treatment on four groups of samples at a time. The stirrer 8 provided at the bottom of the oil bath pot 2 realizes synchronous rotation through induction with the magnet 6 to achieve uniform stirring of the heat-conducting oil in the oil bath pot 2, which is convenient for achieving uniform heat conduction. The magnet 6 and the stirrer 8 are made of high-temperature resistant magnetic material, and the material of the magnet 6 and the stirrer 8 is rare earth permanent magnetic material or aluminum-nickel-cobalt alloy, and the material of the heating coil 7 is copper tube.

[0018] The rotating module 5 includes a driving motor 51, a first gear 52 arranged at the output end of the driving motor 51, and a plurality of second gears 53 arranged outside the first gear 52, the second gear 53 is meshed with the first gear 52 for transmission, the rotating shaft of the driving motor 51 passes through the limit plate 34 and is connected to the first gear 52 through the bearing 55, the top of the second gear 53 is provided with a bearing plate 54, the bearing plate 54 is provided with a mounting groove 541, the magnet 6 is installed in the mounting groove 541, and the mounting grooves 541 on the surface of the plurality of bearing plates 54 are located on the same side. In this embodiment, the second gear 53 includes four groups of second gears 53 meshed with the outside of the first gear 52, the driving motor 51 adopts a DC brushless motor to achieve stepless speed regulation, so that the stirrers 8 in the four groups of oil bath pots 2 can be synchronously operated, thereby providing the same reaction adjustment for the samples, which is convenient for parallel experiments.

[0019] The base 3 is provided with a limit frame 11, a mounting rod 12 is sleeved on the limit frame 11, a first gripping claw 13 is provided at the end of the mounting rod 12, an adjustment block 14 is connected to the mounting rod 12, an adjustment rod 15 is passed through the adjustment block 14, and a second gripping claw 16 is provided on the adjustment rod 15 which is parallel to the first gripping claw 13. In this embodiment, the first gripping claw 13 and the second gripping claw 16 are arranged in an arc shape, which is helpful for clamping and limiting the columnar reaction container.

[0020] A limiting frame plate 21 is disposed below the oil bath pot 2, and a plurality of through slots 22 are disposed through the limiting frame plate 21, and the stirring bar 8 is placed between the bottom wall of the oil bath pot 2 and the limiting frame plate 21. In this embodiment, the through slots 22 are arranged in a circular ring shape.

[0021] A console 33 is protruding from the front side of the base 3, and a display screen 35 and control buttons 36 are arranged on the surface of the console 33. The heating coil 7 is electrically connected to a controller, and the control buttons 36 are electrically connected to the controller. In this embodiment, the controller is a temperature control board, and its maximum temperature threshold is 120°C. The control buttons 36 include buttons for controlling the speed of the drive motor 51 and buttons for controlling the heating temperature.

[0022] The working process of the utility model is as follows: four groups of reaction containers are placed in four groups of oil bath pots 2 respectively, and the mounting rod 12 is sleeved on the limiting frame 11 to adjust the height appropriately, and the length of the adjusting rod 15 is adjusted to adjust the gap between the first claw 13 and the second claw 16 to adapt to the reaction container to be clamped, and the heating button on the control console 33 is started, and the heating coil 7 heats the heat transfer oil in the oil bath pot 2, and the reaction container is fixed in the oil bath pot 2 by the first claw 13 at the end of the limiting frame 11, and the driving motor 51 drives the first gear 52 to rotate, and the first gear 52 drives the four groups of second gears 53 to rotate synchronously, and drives the magnets 6 on the four groups of carrying plates 54 to rotate synchronously, and the magnets 6 and the stirring rods in the oil bath pot 2 are induced to rotate synchronously, and the heat transfer oil in the oil bath pot 2 is stirred, so that the oil temperature in the oil bath pot 2 is more uniform, and the four groups of accommodating chambers 31 on the machine base 3 are convenient for parallel control experiments on multiple groups of solutions.

[0023] Finally, it should be emphasized that the above is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-head magnetic stirrer for an oil bath, comprising a plurality of groups of magnetic stirrers (1) and a plurality of groups of oil bath pots (2) arranged on the magnetic stirrers (1), characterized in that: The magnetic stirrer (1) comprises a machine base (3), the upper surface of the machine base (3) is provided with a receiving cavity (31) adapted to the oil bath pot (2), the machine base (3) is provided with a heating platform (4) at the bottom of the receiving cavity (31), the oil bath pot (2) is placed on the heating platform (4), a rotating module (5) and a magnet (6) arranged at the output end of the rotating module (5) are arranged in the machine base (3), a heating coil (7) is arranged in the heating platform (4), and a stirring rod (8) is arranged at the bottom of the oil bath pot (2).

2. The multi-head magnetic stirrer for oil bath according to claim 1, characterized in that: The rotating module (5) comprises a driving motor (51), a first gear (52) arranged at the output end of the driving motor (51), and a plurality of groups of second gears (53) arranged outside the first gear (52); the second gears (53) are meshed with the first gears (52) for transmission; the rotating shaft of the driving motor (51) passes through a limiting plate (34) and is connected to the first gear (52) via a bearing (55); a bearing plate (54) is arranged on the top of each of the second gears (53); a mounting groove (541) is arranged on the bearing plate (54); and the magnet (6) is mounted in the mounting groove (541).

3. The multi-head magnetic stirrer for oil bath according to claim 1, characterized in that: A limiting frame plate (21) is arranged below the oil bath pot (2), and a plurality of through grooves (22) are arranged through the limiting frame plate (21). The stirring rod (8) is placed between the bottom wall of the oil bath pot (2) and the limiting frame plate (21).

4. The multi-head magnetic stirrer for oil bath according to claim 1, characterized in that: A limit frame (11) is arranged on the machine base (3), a mounting rod (12) is sleeved on the limit frame (11), a first claw (13) is arranged at the end of the mounting rod (12), an adjustment block (14) is connected to the mounting rod (12), an adjustment rod (15) is passed through the adjustment block (14), and a second claw (16) parallel to the first claw (13) is arranged on the adjustment rod (15).

5. The multi-head magnetic stirrer for oil bath according to claim 1, characterized in that: A control console (33) is protruding from the front side of the machine base (3), a display screen (35) and control buttons (36) are arranged on the surface of the control console (33), the heating coil (7) is electrically connected to a controller, and the control buttons (36) are electrically connected to the controller.

6. The multi-head magnetic stirrer for oil bath according to claim 2, characterized in that: The mounting grooves (541) on the surfaces of the plurality of supporting plates (54) are all located on the same side.

Images