Constant-temperature magnetic stirring device

Abstract

The utility model provides a constant-temperature magnetic stirring device which comprises a bearing seat, the interior of the bearing seat is hollow, a servo motor is installed in the bearing seat, a rotary table is fixedly installed at the output end of the servo motor, and the top end of the rotary table penetrates through the top of the inner wall of the bearing seat and extends to the position above the bearing seat. Compared with the prior art, the magnetic stirring device has the following beneficial effects that the magnetic transmission component and the magnetic stirring component are mutually adsorbed through the magnet and synchronously rotate under the driving of the rotary table, and the central stirring rod and the edge stirring rods are clear in division of labor, so that liquid in a constant-temperature stirring container can be stirred in all directions, and stirring dead angles are effectively avoided; moreover, the first positive pole magnet block and the first negative pole magnet block as well as the second positive pole magnet block and the second negative pole magnet block are mutually adsorbed, so that the magnetic transmission assembly efficiently drives the magnetic stirring assembly to rotate, the continuity and the stability of the stirring process are ensured, and the stirring effect is improved.

Description

Technical Field

[0001] This utility model is a constant temperature magnetic stirring device, belonging to the field of constant temperature magnetic stirring equipment. Background Technology

[0002] Thermostatic magnetic stirring device is a widely used device in experimental and production scenarios. It combines stirring and temperature control functions and can meet the specific requirements of various liquid handling operations. It generally includes a base, heating tray, container, stir bar and drive mechanism. The base is equipped with drive components such as motor, and a heating tray is set on top. A container for holding liquid is placed on the tray. A rotating shaft is fixed to the bottom wall of the container, and a stir bar is installed inside that is rotatably connected to the rotating shaft.

[0003] In existing technology, the bottom of the stir bar is magnetically attracted to an external magnet. When the magnet rotates, it can drive the stir bar to rotate. In order to improve the stirring force, the stir bar is usually composed of a horizontal stirring rod and a vertical stirring rod. However, only the horizontal stirring rod of the stir bar is subjected to magnetic force transmission. The vertical stirring rod can only receive the transmission from the horizontal stirring rod. This causes the resistance encountered by the stir bar during rotation to be mismatched with the force of magnetic transmission, which can easily lead to the phenomenon of stirring interruption and reduce the stirring stability.

[0004] In summary, this utility model provides a constant temperature magnetic stirring device to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a constant temperature magnetic stirring device to solve the problem of poor stirring stability mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a constant-temperature magnetic stirring device includes a support base, the interior of which is hollow. A servo motor is installed inside the support base, and a turntable is fixedly installed at the output end of the servo motor. The top of the turntable penetrates the top of the inner wall of the support base and extends to the top of the support base. Support plates are fixedly installed on both sides of the top of the support base, and connecting seats are fitted onto the tops of the two support plates. A constant-temperature stirring container is fixedly installed between the opposite sides of the two connecting seats. A magnetic transmission assembly is fixedly installed at the top of the turntable and at the bottom of the constant-temperature stirring container. A protrusion is provided at the center of the bottom of the inner wall of the constant-temperature stirring container. The magnetic stirring assembly is embedded inside the constant-temperature stirring container through the protrusion. A first annular movable groove is formed at the bottom of the constant-temperature stirring container, and a second annular movable groove is formed on the outer surface of the constant-temperature stirring container.

[0007] Furthermore, the tops of both support plates are rounded, and the bottoms of both connecting seats are provided with grooves that fit into the tops of the two support plates, with rubber pads fixedly attached inside the grooves.

[0008] Furthermore, the thermostatic stirring container is cylindrical with an open top, and the center of the top of the turntable and the center of the bottom of the thermostatic stirring container are located on the same longitudinal central axis.

[0009] Furthermore, the magnetic transmission assembly includes a transmission plate, which is fixedly installed on the top of the turntable. Mounting plates are fixedly installed on both sides of the top of the transmission plate and on both sides of the constant temperature stirring container. First positive magnet blocks are fixedly connected to both sides of the top of the transmission plate and inside the first annular movable groove. Second positive magnet blocks are fixedly installed on the opposite side of the two mounting plates and inside the second annular movable groove.

[0010] Furthermore, both first positive electrode magnets are circumferentially slidably connected to the bottom of the constant temperature stirring container through the first annular movable groove, and both second positive electrode magnets are circumferentially slidably connected to the outer surface of the constant temperature stirring container through the second annular movable groove.

[0011] Furthermore, the magnetic stirring assembly includes a central stirring rod, the bottom center of which is embedded in a protrusion at the bottom center of the inner wall of the constant temperature stirring container. A fixing rod is fixedly installed at the top center of the central stirring rod, and connecting rods are fixedly installed on the top of both sides of the fixing rod. Edge stirring rods are fixedly installed at the opposite ends of the two connecting rods on both sides of the inner wall of the constant temperature stirring container. First negative magnets are respectively embedded on both sides inside the central stirring rod and directly above the two first positive magnets inside the magnetic transmission assembly. Second negative magnets are respectively fixedly embedded on opposite sides of the two edge stirring rods inside the magnetic transmission assembly.

[0012] Furthermore, the two edge stirring rods are in contact with the inner wall of the constant temperature stirring container on opposite sides, the bottom ends of the two edge stirring rods are in contact with the bottom of the inner wall of the constant temperature stirring container, the bottom of the center stirring rod is in contact with the bottom of the inner wall of the constant temperature stirring container, the first positive magnet and the first negative magnet are attracted to each other, and the second positive magnet and the second negative magnet are attracted to each other.

[0013] The beneficial effects of this utility model are:

[0014] The magnetic drive assembly and the magnetic stirring assembly are attracted to each other by magnets and rotate synchronously under the drive of the turntable. The central stirring rod and the edge stirring rod have a clear division of labor, which can realize all-round stirring of the liquid in the constant temperature stirring container, effectively avoiding stirring dead corners and greatly improving the stirring uniformity. Moreover, the first positive magnet block and the first negative magnet block, and the second positive magnet block and the second negative magnet block are attracted to each other, so that the magnetic drive assembly can efficiently drive the magnetic stirring assembly to rotate, ensuring the continuity and stability of the stirring process and improving the stirring effect. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0016] Figure 1 This is a perspective view of a constant temperature magnetic stirring device according to the present invention;

[0017] Figure 2 This is a main sectional view of a constant temperature magnetic stirring device according to the present invention;

[0018] Figure 3 This is a top view of a constant temperature magnetic stirring device according to the present invention;

[0019] Figure 4 for Figure 2 The bottom view of the thermostatic stirring vessel shown.

[0020] Figure 5 for Figure 2 The top view of the magnetic drive assembly shown.

[0021] In the diagram: 1. Load-bearing base; 2. Support plate; 3. Connecting seat; 4. Constant temperature stirring container; 5. Servo motor; 6. Turntable; 7. Magnetic transmission assembly; 8. Magnetic stirring assembly; 9. Protrusion; 10. Rubber pad; 11. First annular movable groove; 12. Second annular movable groove; 71. Transmission plate; 72. Mounting plate; 73. First positive magnet; 74. Second positive magnet; 81. Central stirring rod; 82. Fixed rod; 83. Connecting rod; 84. First negative magnet; 85. Edge stirring rod; 86. Second negative magnet. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1-5This utility model provides a technical solution: a constant temperature magnetic stirring device, including a support base 1, the interior of which is hollow. A servo motor 5 is installed inside the support base 1, and a turntable 6 is fixedly installed at the output end of the servo motor 5. The servo motor 5 is connected to an external power source via wires and is equipped with a power control switch. The top of the turntable 6 penetrates the top of the inner wall of the support base 1 and extends to the top of the support base 1. The turntable 6 is rotatably connected to the support base 1 via bearings. This connection method greatly reduces friction during rotation, reduces energy loss, and improves efficiency. The improved rotational precision and stability of the turntable 6 ensures the reliable operation of the entire stirring device. Support plates 2 are fixedly installed on both sides of the top of the support base 1. Connecting seats 3 are fitted onto the top of each of the two support plates 2. A constant-temperature stirring container 4 is fixedly installed between the opposite sides of the two connecting seats 3. A magnetic drive assembly 7 is fixedly installed at the top of the turntable 6 and at the bottom of the constant-temperature stirring container 4. The bottom of the constant-temperature stirring container 4 consists of a heating tray, which heats the container. A temperature sensing rod monitors the liquid temperature inside the container in real time and feeds the information back to the control system. To precisely control heating or cooling and maintain a set constant temperature, a protrusion 9 is provided at the center of the bottom of the inner wall of the constant temperature stirring container 4. A magnetic stirring component 8 is embedded inside the constant temperature stirring container 4 via the protrusion 9. A first annular movable groove 11 is formed at the bottom of the constant temperature stirring container 4, and a second annular movable groove 12 is formed on the outer surface of the constant temperature stirring container 4. The tops of both support plates 2 are rounded, and the bottoms of both connecting seats 3 are provided with grooves that fit the tops of the two support plates 2. A rubber pad 10 is fixedly adhered inside the groove, which enhances the connection. The friction between the seat 3 and the support plate 2 makes the connection more stable and effectively prevents the seat 3 from shifting on the support plate 2. On the other hand, the rubber pad 10 can also play a role in shock absorption and buffering, reducing the impact of vibration generated during the stirring process on the constant temperature stirring container 4, thereby improving the stability of the stirring. The constant temperature stirring container 4 is cylindrical with an open top. This shape design facilitates the injection and removal of liquid and is also conducive to the flow and mixing of liquid during the stirring process. The top center of the turntable 6 and the bottom center of the constant temperature stirring container 4 are located on the same longitudinal central axis.

[0024] Please see Figure 2 , Figure 4 and Figure 5The magnetic drive assembly 7 includes a drive plate 71, which is fixedly mounted on the top of the turntable 6. Mounting plates 72 are fixedly mounted on both sides of the top of the drive plate 71 and on both sides of the constant temperature stirring container 4. First positive magnet blocks 73 are fixedly connected to both sides of the top of the drive plate 71 and inside the first annular movable groove 11. Second positive magnet blocks 74 are fixedly mounted on the opposite side of the two mounting plates 72 and inside the second annular movable groove 12. The two first positive magnet blocks 73 are circumferentially slidably connected to the bottom of the constant temperature stirring container 4 through the first annular movable groove 11. The two second positive magnet blocks 74 are circumferentially slidably connected to the outer surface of the constant temperature stirring container 4 through the second annular movable groove 12. The design of the first annular movable groove 11 and the second annular movable groove 12 provides a precise movement track for the first positive magnet blocks 73 and the second positive magnet blocks 74, enabling them to stably slide circumferentially on the bottom and outer surface of the constant temperature stirring container 4, and drive the magnetic stirring assembly 8 inside the constant temperature stirring container 4 through magnetic interaction.

[0025] Please see Figure 2 and Figure 3The magnetic stirring assembly 8 includes a central stirring rod 81. The bottom center of the central stirring rod 81 is embedded in a protrusion 9 at the bottom center of the inner wall of the constant temperature stirring container 4. The protrusion 9 not only accurately positions the central stirring rod 81 but also enhances the stability of the central stirring rod 81 during rotation, preventing it from shifting. A fixing rod 82 is fixedly installed at the top center of the central stirring rod 81. Connecting rods 83 are fixedly installed on the top of both sides of the fixing rod 82. Edge stirring rods 85 are fixedly installed at the ends of the two connecting rods 83 that are separated from each other and located on both sides of the inner wall of the constant temperature stirring container 4. This structural design allows the central stirring rod 81 to stir the central area of ​​the liquid when the magnetic stirring assembly 8 rotates, while the edge stirring rods 85 focus on stirring the liquid near the inner wall and bottom of the container, achieving all-round stirring of the liquid in the constant temperature stirring container 4, effectively avoiding the occurrence of stirring dead zones, and greatly improving the uniformity of stirring. The two first positive sides inside the central stirring rod 81 and located inside the magnetic transmission assembly 7 are also fixedly installed. A first negative magnet 84 is embedded directly above the positive magnet 73. A second negative magnet 86 is fixedly embedded on the opposite side of the two second positive magnets 74 inside the two edge stirring rods 85 and within the magnetic transmission assembly 7. The sides of the two edge stirring rods 85 that are separated from each other are in contact with the inner wall of the constant temperature stirring container 4, and the bottom ends of the two edge stirring rods 85 are in contact with the bottom of the inner wall of the constant temperature stirring container 4. The bottom of the central stirring rod 81 is in contact with the bottom of the inner wall of the constant temperature stirring container 4. This close contact design ensures that the edge stirring rods 85 fully stir the liquid at the edge and bottom of the constant temperature stirring container 4, further improving the stirring effect and making the stirring more comprehensive and uniform. The first positive magnet 73 and the first negative magnet 84 attract each other, and the second positive magnet 74 and the second negative magnet 86 attract each other. This magnetic attraction mechanism enables the magnetic transmission assembly 7 to efficiently drive the magnetic stirring assembly 8 to rotate, ensuring the continuity and stability of the stirring process.

[0026] Detailed implementation: When the stirring device is needed, the servo motor 5 is first connected to the external power supply and started by the power control switch. After the servo motor 5 is started, its output end drives the turntable 6, which is fixedly installed with it, to start rotating. Since the turntable 6 is rotatably connected to the load-bearing seat 1 through the bearing, this connection method greatly reduces the friction during the rotation process and reduces energy loss, so that the turntable 6 can rotate with high precision and stability, thereby ensuring the reliable operation of the entire stirring device.

[0027] The magnetic drive assembly 7 at the top of the turntable 6 rotates together with the turntable 6. The drive plate 71 in the magnetic drive assembly 7 is fixed to the top of the turntable 6. The first positive pole magnets 73 on both sides of the top slide in a circular motion through the first annular groove 11 at the bottom of the constant temperature stirring container 4. The second positive pole magnets 74 on the mounting plate 72 slide in a circular motion through the second annular groove 12 on the outer surface of the constant temperature stirring container 4. The first annular groove 11 and the second annular groove 12 provide a precise movement track for the magnets, ensuring that they slide in a stable circular motion.

[0028] Inside the thermostatic stirring container 4, the magnetic stirring assembly 8 is embedded in the container through a protrusion 9 at the bottom center. The protrusion 9 provides precise positioning for the central stirring rod 81, enhancing its rotational stability. The first negative magnet 84 inside the central stirring rod 81 is attracted to the first positive magnet 73 in the magnetic transmission assembly 7. The second negative magnet 86 inside the edge stirring rod 85 is attracted to the second positive magnet 74. Under the action of magnetic force, the magnetic transmission assembly 7 drives the magnetic stirring assembly 8 to rotate synchronously. During rotation, the central stirring rod 81 is responsible for stirring the central area of ​​the liquid, while the edge stirring rod 85, due to its close contact with the inner wall and bottom of the thermostatic stirring container 4, can stir the liquid near the inner wall and bottom of the container, achieving all-round stirring of the liquid in the thermostatic stirring container 4, effectively avoiding stirring dead zones, and greatly improving the stirring uniformity.

[0029] In addition, the thermostatic stirring container 4 is cylindrical with an open top, which facilitates the injection and removal of liquids and also promotes the flow and mixing of liquids during stirring. The support plates 2 on both sides of the top of the support base 1 are fixed to the thermostatic stirring container 4 by the connecting seat 3 fitted at the top. The rounded corner design at the top of the support plate 2 and the rubber pad 10 adhered in the groove at the bottom of the connecting seat 3 not only enhance the stability of the connection and prevent the connecting seat 3 from shifting, but also reduce shock and buffer, reduce the impact of stirring vibration on the thermostatic stirring container 4, and further improve the stability of stirring.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A constant-temperature magnetic stirring device, comprising a support base (1), characterized in that: The interior of the load-bearing base (1) is hollow. A servo motor (5) is installed inside the load-bearing base (1). A turntable (6) is fixedly installed at the output end of the servo motor (5). The top of the turntable (6) penetrates the top of the inner wall of the load-bearing base (1) and extends to the top of the load-bearing base (1). Support plates (2) are fixedly installed on both sides of the top of the load-bearing base (1). Connecting seats (3) are fitted on the top of the two support plates (2). A constant temperature stirring container (4) is fixedly installed between the opposite sides of the two connecting seats (3). A magnetic drive assembly (7) is fixedly installed at the top of the turntable (6) and at the bottom of the constant temperature stirring container (4). A protrusion (9) is provided at the center of the bottom of the inner wall of the constant temperature stirring container (4). A magnetic stirring assembly (8) is embedded in the interior of the constant temperature stirring container (4) through the protrusion (9). A first annular movable groove (11) is opened at the bottom of the constant temperature stirring container (4). A second annular movable groove (12) is opened on the outer surface of the constant temperature stirring container (4).

2. The constant temperature magnetic stirring device according to claim 1, characterized in that: The tops of the two support plates (2) are rounded, and the bottoms of the two connecting seats (3) are provided with grooves that fit the tops of the two support plates (2), and rubber pads (10) are fixedly attached inside the grooves.

3. The constant temperature magnetic stirring device according to claim 1, characterized in that: The thermostatic stirring container (4) is cylindrical with an open top. The center of the top of the turntable (6) and the center of the bottom of the thermostatic stirring container (4) are located on the same longitudinal central axis.

4. The constant temperature magnetic stirring device according to claim 1, characterized in that: The magnetic drive assembly (7) includes a drive plate (71), which is fixedly installed on the top of the turntable (6). Mounting plates (72) are fixedly installed on both sides of the top of the drive plate (71) and on both sides of the constant temperature stirring container (4). First positive magnet blocks (73) are fixedly connected to both sides of the top of the drive plate (71) and inside the first annular movable groove (11). Second positive magnet blocks (74) are fixedly installed on the opposite side of the two mounting plates (72) and inside the second annular movable groove (12).

5. The constant temperature magnetic stirring device according to claim 4, characterized in that: The two first positive magnet blocks (73) are circumferentially connected to the bottom of the constant temperature stirring container (4) through the first annular movable groove (11), and the two second positive magnet blocks (74) are circumferentially connected to the outer surface of the constant temperature stirring container (4) through the second annular movable groove (12).

6. The constant temperature magnetic stirring device according to claim 1, characterized in that: The magnetic stirring assembly (8) includes a central stirring rod (81). The bottom center of the central stirring rod (81) is embedded in a protrusion (9) at the bottom center of the inner wall of the constant temperature stirring container (4). A fixing rod (82) is fixedly installed at the top center of the central stirring rod (81). Connecting rods (83) are fixedly installed on the top of both sides of the fixing rod (82). Edge stirring rods (85) are fixedly installed at the ends of the two connecting rods (83) that are separated from each other and on both sides of the inner wall of the constant temperature stirring container (4). A first negative magnet (84) is embedded on both sides inside the central stirring rod (81) and directly above the two first positive magnets (73) inside the magnetic transmission assembly (7). A second negative magnet (86) is fixedly embedded on the opposite side of the two second positive magnets (74) inside the two edge stirring rods (85).

7. The constant temperature magnetic stirring device according to claim 6, characterized in that: The two edge stirring rods (85) are in contact with the inner wall of the constant temperature stirring container (4) on their opposite sides. The bottom ends of the two edge stirring rods (85) are in contact with the bottom of the inner wall of the constant temperature stirring container (4). The bottom of the center stirring rod (81) is in contact with the bottom of the inner wall of the constant temperature stirring container (4). The first positive magnet (73) and the first negative magnet (84) are attracted to each other. The second positive magnet (74) and the second negative magnet (86) are attracted to each other.

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