Magnetic stirring device

Abstract

The utility model relates to the technical field of magnetic stirrers. The utility model discloses a magnetic stirring device which comprises a stirring kettle, a stirring device, a fixing frame, an electromagnetic device and a power supply, the stirring kettle is spherical, the stirring device is arranged in the stirring kettle, the stirring device comprises a stirring sphere center and a plurality of blades, one end of each blade is connected to the stirring sphere center, and the other end of each blade is connected to the electromagnetic device. A spherical abutting part is arranged at the other end of each blade, magnetic attraction parts are arranged on part of the blades, the stirring kettle is connected to the upper portion of the fixing frame, the electromagnetic device comprises an electromagnetic switch and a plurality of electromagnetic parts, and the power source comprises a power switch and is electrically connected to the electromagnetic device. The circular stirring kettle and the stirring device are used, the stirring device is driven to stir through an electromagnetic effect, and the stirring kettle and the stirring device are arranged in a circular shape, so that the stirring of the stirring kettle is not influenced no matter whether the fixed frame is horizontal or not during use, errors caused by displacement can be avoided after long-time use, and time and labor are saved; the applicability of the stirring kettle is improved.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic stirrers, and in particular to a magnetic stirring device. Background Art

[0002] In the field of chemical technology, stirring can increase the contact area between reactants, speed up the chance of collision between molecules, thereby accelerating the rate of chemical reactions, ensuring a more uniform and thorough reaction, and improving reaction efficiency and yield. Therefore, chemical magnetic stirrers are often used in the chemical industry. Magnetic stirrers are instruments for liquid mixing, mainly used for stirring or simultaneously heating and stirring low-viscosity liquids or solid-liquid mixtures. Its basic principle is to use the principle of magnetic field that like charges repel and opposite charges attract, and use the magnetic field to drive the magnetic stirrer placed in the container to rotate in a circle, so as to achieve the purpose of stirring the liquid. In conjunction with the heating temperature control system, the sample temperature can be heated and controlled according to specific experimental requirements, the temperature conditions required for the experimental conditions can be maintained, and the liquid mixing can be ensured to meet the experimental requirements. However, the magnetic stirrer needs to be adjusted to a horizontal state before use. It is common to adjust it manually, but the manual adjustment rate is low and the error is large.

[0003] The patent with application number CN202221167596.0 discloses a magnetic stirrer for chemical industry, which relates to the technical field of magnetic stirrers, including a shell and a magnetic stirring body, and the magnetic stirring body is fixedly installed on the top of the shell, and the four corners of the bottom of the inner cavity of the shell are fixedly connected with an internal threaded barrel, and the bottom of the internal threaded barrel is connected with a foot plate, and the two ends of the top of the foot plate are symmetrically fixed with telescopic rods, and the threaded rod is threaded in the internal threaded barrel. The four corners of the bottom of the inner cavity of the shell are fixedly installed with a driving member, and the bottom of the inner cavity of the shell is fixedly installed with an adjusting member, and the top side of the magnetic stirring body is connected with a support rod, and a connecting rod is slidably arranged in the groove at the top of the support rod, and a fixing member is slidably arranged on the side wall of the support rod. This device controls four groups of driving members to operate through an adjusting member, so as to adjust the device to a horizontal state, which has a high adjustment efficiency and a small error. However, in the prior art, it is still necessary to adjust the magnetic stirrer horizontally, and the horizontal adjustment is affected by many factors. When used for a long time, it is necessary to adjust the error, which is time-consuming and laborious. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the present application discloses a magnetic stirring device that can directly stir materials without the need for level adjustment.

[0005] The utility model discloses a magnetic stirring device, which comprises a stirring kettle, a stirring device, a fixing frame, an electromagnetic device and a power supply. The stirring kettle is spherical, comprises a hollow spherical stirring kettle cavity, a stirring kettle feeding pipe passing through the stirring kettle near the upper part and a stirring kettle discharging pipe passing through the stirring kettle near the lower part, a feeding port switch is arranged on the stirring kettle feeding pipe, a discharging port switch is arranged on the stirring kettle discharging pipe, the stirring kettle comprises an upper stirring kettle and a lower stirring kettle, one side of the upper stirring kettle is hinged to the lower stirring kettle, an upper stirring kettle protruding part protruding outwards is arranged on one side of the upper stirring kettle close to the lower stirring kettle, a lower stirring kettle protruding part protruding outwards is arranged on one side of the lower stirring kettle close to the lower upper stirring kettle, a plurality of through holes are respectively passed through the upper stirring kettle protruding part and the lower stirring kettle protruding part, and the upper stirring kettle protruding part and the lower stirring kettle protruding part are respectively passed through. The through hole on the protruding part of the kettle includes a plurality of fixing parts that can fix the upper stirring kettle and the lower stirring kettle through the through hole. The stirring device is arranged inside the stirring kettle. The stirring device includes a stirring ball core and a plurality of blades. The stirring ball core is arranged at the center of the stirring kettle. One end of the plurality of blades is connected to the stirring ball core. The end of the blade away from the stirring ball core is provided with a spherical abutment part. Some of the plurality of blades are provided with a magnetic attraction part. The fixing frame includes at least four fixed legs. The stirring kettle is fixedly connected to the top of the fixing frame through the protruding part of the lower stirring kettle. The electromagnetic device includes an electromagnetic switch and a plurality of electromagnetic parts. The electromagnetic device is arranged at the lower part of the stirring kettle. The plurality of electromagnetic parts are evenly distributed on both sides of the stirring kettle. The power supply is arranged on the fixing frame. The power supply includes a power switch. The power supply is electrically connected to the electromagnetic device.

[0006] Furthermore, a magnetic shielding member is provided on one end of the electromagnetic part away from the stirring kettle, the area of ​​the magnetic shielding member is larger than the area of ​​the electromagnetic part, and the magnetic shielding member completely covers the electromagnetic part.

[0007] Furthermore, the length between the two farthest abutting portions on the stirring device is 96% to 98% of the diameter length of the spherical stirring kettle cavity.

[0008] Furthermore, the shape of the blade is one of U-shape, spiral shape and semi-arc shape.

[0009] Furthermore, the stirring kettle and the stirring device are made of non-ferromagnetic metal or non-ferromagnetic alloy.

[0010] Furthermore, an observation window and a temperature sensor are provided on the upper stirring kettle.

[0011] Furthermore, a sealing gasket is provided between the upper stirring kettle protrusion and the lower stirring kettle protrusion.

[0012] Beneficial effects of the utility model:

[0013] When in use, the magnetic stirring device of the present application fixes the upper stirring kettle and the lower stirring kettle through the fixing part, closes the switch of the stirring kettle discharge pipe, and then introduces the raw materials to be stirred and mixed from the stirring kettle feed pipe into the stirring kettle and then closes the stirring kettle feed pipe, turns on the power through the switch to introduce current into the electromagnetic part of the electromagnetic device, the electromagnetic parts are evenly distributed on both sides of the bottom of the stirring kettle, and the electromagnetic part is energized to generate electromagnetics, thereby interacting with the magnetic suction parts provided on some of the blades on the stirring device, thereby driving the stirring device to rotate in the stirring kettle, so that the stirring kettle can complete the stirring of the materials. Because the stirring kettle and the stirring device are arranged in a circular shape, whether the fixing frame is horizontal or not during use will not affect the stirring of the stirring kettle, and no error will be generated due to displacement during long-term use, which saves time and manpower and increases the applicability of the stirring kettle.

[0014] When the stirring device of the present application needs to be maintained and cleaned, it is only necessary to open the upper stirring kettle and the lower stirring kettle, and directly take the stirring device out of the stirring kettle, which facilitates the maintenance and cleaning of the stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a magnetic stirring device in an embodiment of the present application.

[0016] Figure 2 It is a partial structural schematic diagram of a magnetic stirring device in an embodiment of the present application.

[0017] Figure 3 for Figure 1 A magnified schematic diagram of center A.

[0018] In the figure: a magnetic stirring device 100, a stirring kettle 11, a stirring kettle inlet pipe 111, a stirring kettle outlet pipe 112, an upper stirring kettle 113, an upper stirring kettle protrusion 1131, a fixing portion 1132, an observation window 1133, a temperature sensor 1134, a lower stirring kettle 114, a lower stirring kettle protrusion 1141, a sealing gasket 1142, a stirring device 12, a stirring ball core 121, blades 122, abutting portion 123, a magnetic attraction portion 124, a fixing frame 13, a fixing leg 131, an electromagnetic device 14, an electromagnetic portion 141, a magnetic shielding member 142, and a power supply 15. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the specific implementation manner of the utility model will be clearly and completely described below.

[0020] The utility model discloses a magnetic stirring device 100, such as Figure 1As shown, the magnetic stirring device 100 includes a stirring kettle 11, a stirring device 12, a fixing frame 13, an electromagnetic device 14 and a power supply 15. The stirring kettle 11 is spherical, and includes a hollow spherical stirring kettle 11 cavity, a stirring kettle feed pipe 111 passing through the upper part and a stirring kettle discharge pipe 112 passing through the lower part. The stirring kettle feed pipe 111 is provided with a feed inlet switch, and the stirring kettle discharge pipe 112 is provided with a discharge outlet switch. The stirring kettle 11 includes an upper stirring kettle 113 and a lower stirring kettle 114. One side of the upper stirring kettle 113 is hinged to the lower stirring kettle 114. The upper stirring kettle 113 is close to the lower stirring kettle 114. 4 is provided with an upper stirring kettle protrusion 1131 protruding outward, and a lower stirring kettle protrusion 1141 protruding outward is provided on a side of the lower stirring kettle 114 close to the upper stirring kettle 113. The upper stirring kettle protrusion 1131 and the lower stirring kettle protrusion 1141 are respectively penetrated with a plurality of through holes, and the through holes on the upper stirring kettle protrusion 1131 include a plurality of fixing parts 1132 that can fix the upper stirring kettle 113 and the lower stirring kettle 114 through the through holes. The fixing parts 1132 fix the upper stirring kettle 113 and the lower stirring kettle 114 through the upper stirring kettle protrusion 1131 and the lower stirring kettle protrusion 1141. Figure 2As shown, the stirring device 12 is arranged inside the stirring tank 11, and the stirring device 12 includes a stirring ball core 121 and a plurality of blades 122. The stirring ball core 121 is arranged at the center of the stirring tank 11, and one end of the plurality of blades 122 is connected to the stirring ball core 121. The end of the blade 122 away from the stirring ball core 121 is provided with a spherical abutment portion 123, and some of the plurality of blades 122 are provided with a magnetic attraction portion 124. The spherical abutment portion 123 is used to reduce the friction of the stirring device 12 on the inner wall of the stirring tank 11 when the stirring device 12 is stirring in the stirring tank 11. The fixing frame 13 includes at least four fixing legs 131. The stirring tank 11 is fixedly connected to the upper part of the fixing frame 13 through the lower stirring tank protrusion 1141. The fixing frame 13 is used to fix and support the stirring tank 11. The electromagnetic device 14 includes an electromagnetic switch and a plurality of electromagnetic parts 141. The electromagnetic device 14 is arranged at the lower part of the stirring kettle 11. The plurality of electromagnetic parts 141 are evenly distributed on both sides of the stirring kettle 11. The electromagnetic parts 141 are used to generate magnetic force and interact with the magnetic attraction part 124 when powered on, thereby driving the stirring device 12 to move. The electromagnetic parts 141 are evenly distributed on both sides of the stirring kettle 11 to make the interaction force generated by the electromagnetic device 14 on the stirring device 12 in the stirring kettle 11 more balanced, so as to achieve a more uniform stirring effect. The power supply 15 is arranged on the fixed frame 13. The power supply 15 includes a power supply 15 switch. The power supply 15 is electrically connected to the electromagnetic device 14. The power supply 15 is used to supply power to the electromagnetic device 14, and the magnetic force generated by the magnetic attraction part 124 on the electromagnetic device 14 is controlled according to the power supply amount, thereby controlling the movement speed of the stirring device 12 and the stirring speed of the stirring device 12. When the stirring device 12 of the present application needs to be maintained and cleaned, it is only necessary to open the upper stirring kettle 113 and the lower stirring kettle 114 and directly take the stirring device 12 out of the stirring kettle 11, so as to facilitate maintenance and cleaning of the stirring device 12. When the magnetic stirring device 100 of the present application is in use, the upper stirring kettle 113 and the lower stirring kettle 114 are fixed by the fixing part 1132, the switch of the stirring kettle discharge pipe 112 is closed, and then the raw materials to be stirred and mixed are introduced into the stirring kettle 11 from the stirring kettle inlet pipe 111 and then the stirring kettle inlet pipe 111 is closed, and the power supply 15 is turned on by the switch to introduce current into the electromagnetic part 141 of the electromagnetic device 14, and the electromagnetic part 141 is evenly distributed on both sides of the bottom of the stirring kettle 11. The electromagnetic part 141 is energized to generate electromagnetics, thereby interacting with the magnetic attraction part 124 provided on some of the blades 122 on the stirring device 12, thereby driving the stirring device 12 to rotate in the stirring kettle 11, so that the stirring kettle 11 can complete the stirring of the materials. Because the stirring kettle 11 and the stirring device 12 are arranged in a circular shape, whether the fixing frame 13 is horizontal or not during use does not affect the stirring of the stirring kettle 11, and no error will be generated due to displacement during long-term use, which saves time and manpower and increases the applicability of the stirring kettle 11.

[0021] As an implementation method, Figure 3 As shown, a magnetic shielding member 142 is provided on one end of the electromagnetic part 141 away from the stirring kettle 11, and the area of ​​the magnetic shielding member 142 is larger than the area of ​​the electromagnetic part 141, and the magnetic shielding member 142 completely covers the electromagnetic part 141. The electromagnetic part 141 is fixedly connected to the lower stirring kettle 114. When the power supply 15 energizes the electromagnetic device 14, the electromagnetic part 141 begins to generate magnetic force due to the energization. Although the electromagnetic part 141 is to drive the stirring device 12 to move, the magnetic force generated by the electromagnetic part 141 will still interfere with the external environment, and the generated magnetic force may absorb external magnetic metals and magnetic metal alloys, which is easy to cause safety hazards when the stirring kettle 11 is operating. The present application provides a magnetic shielding member 142, and the area of ​​the magnetic shielding member 142 is larger than the area of ​​the electromagnetic part 141, so that the electromagnetic part 141 is completely covered on the lower reaction kettle, so as to prevent the electromagnetic part 141 from interfering with the outside world when it is energized to generate magnetic force, and improve the safety of the electromagnetic part 141.

[0022] As an embodiment, the length between the two farthest abutment parts 123 on the stirring device 12 is 96% to 98% of the length of the cavity diameter of the spherical stirring kettle 11. The length between the two farthest abutment parts 123 of the stirring device 12 in the reactor is the area that the stirring device 12 can cover by stirring. The stirring area of ​​the stirring device 12 is set to 96% to 98% of the length of the cavity diameter of the spherical stirring kettle 11 in order to ensure the stirring effect and reduce vibration during the stirring process. When the length between the two farthest abutment parts 123 on the stirring device 12 is less than 96% of the length of the cavity diameter of the spherical stirring kettle 11, the stirring area of ​​the stirring device 12 is small when stirring, and the stirring device 12 is prone to vibration or even shaking when stirring, and the collision between the abutment part 123 and the inner wall of the stirring kettle 11 will also be large, affecting the service life of the reactor. When the length between the two farthest abutment portions 123 on the stirring device 12 is more than 98% of the length of the cavity diameter of the spherical stirring kettle 11 , the friction between the stirring device 12 and the stirring kettle 11 is relatively large, and the magnetic force required for stirring is relatively large, which affects the stirring effect of the stirring device 12 .

[0023] As an embodiment, the shape of the blade 122 is one of U-shaped, spiral and semi-arc. In order to ensure that the stirring device 12 can stir smoothly on the one hand, and on the other hand, the stirring device 12 can stir and drive more materials, the page of the stirring device 12 is set to have a certain arc shape. Preferably, the shape of the blade 122 is U-shaped, spiral and semi-arc.

[0024] As an embodiment, the stirring kettle 11 and the stirring device 12 are made of non-ferromagnetic metal or non-ferromagnetic alloy. The stirring device 12 of the present application drives the stirring device 12 to move by the interaction between the electromagnetic part 141 on the electromagnetic device 14 and the magnetic attraction part 124 on the blade 122 of the stirring device 12, and a large magnetic force will be generated when in use. In order to prevent the stirring kettle 11 and the stirring device 12 from affecting the stirring process of the stirring kettle 11, the stirring kettle 11 and the stirring device 12 are made of non-ferromagnetic metal or non-ferromagnetic alloy.

[0025] As an embodiment, the upper stirring tank 113 is provided with an observation window 1133 and a temperature sensor 1134. The observation window 1133 is used to observe the stirring of the material on the one hand, and to observe the content of the material in the stirring tank 11 on the other hand, to prevent the material from affecting the stirring in the stirring tank 11.

[0026] As an embodiment, a sealing gasket 1142 is provided between the upper stirring kettle protrusion 1131 and the lower stirring kettle protrusion 1141. The sealing gasket 1142 is used to prevent moisture in the material from flowing out from between the upper stirring kettle protrusion 1131 and the lower stirring kettle protrusion 1141 during the stirring process, thereby increasing the sealing performance between the upper stirring kettle protrusion 1131 and the lower stirring kettle protrusion 1141.

[0027] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A magnetic stirring device, characterized in that: include: A spherical stirring kettle, the stirring kettle comprising a hollow spherical stirring kettle cavity, a stirring kettle feed pipe passing through the upper part and a stirring kettle discharge pipe passing through the lower part, the stirring kettle feed pipe is provided with a feed port switch, the stirring kettle discharge pipe is provided with a discharge port switch, the stirring kettle comprises an upper stirring kettle and a lower stirring kettle, one side of the upper stirring kettle is hinged to the lower stirring kettle, an upper stirring kettle protrusion protruding outward is provided on one side of the upper stirring kettle close to the lower stirring kettle, a lower stirring kettle protrusion protruding outward is provided on one side of the lower stirring kettle close to the lower upper stirring kettle, a plurality of through holes are respectively passed through the upper stirring kettle protrusion and the lower stirring kettle protrusion, and the through holes on the upper stirring kettle protrusion include a plurality of fixing parts capable of fixing the upper stirring kettle and the lower stirring kettle through the through holes; A stirring device, the stirring device is arranged inside the stirring kettle, the stirring device comprises a stirring ball core and a plurality of blades, the stirring ball core is arranged at the center of the stirring kettle, one end of the plurality of blades is connected to the stirring ball core, a spherical abutment portion is arranged at one end of the blade away from the stirring ball core, and a magnetic attraction portion is arranged on some of the plurality of blades; A fixing frame, the fixing frame includes at least four fixing legs, and the stirring kettle is fixedly connected to the upper part of the fixing frame through the lower stirring kettle protrusion; The electromagnetic device includes an electromagnetic switch and a plurality of electromagnetic parts. The electromagnetic device is arranged at the lower part of the stirring kettle, and the plurality of electromagnetic parts are evenly distributed on both sides of the stirring kettle. The power supply is arranged on the fixing frame, the power supply comprises a power switch, and the power supply is electrically connected to the electromagnetic device.

2. A magnetic stirring device according to claim 1, characterized in that: A magnetic shielding component is arranged on one end of the electromagnetic part away from the stirring kettle. The area of ​​the magnetic shielding component is larger than the area of ​​the electromagnetic part, and the magnetic shielding component completely covers the electromagnetic part.

3. A magnetic stirring device according to claim 1, characterized in that: The length between the two farthest abutting parts on the stirring device is 96% to 98% of the length of the diameter of the spherical stirring kettle cavity.

4. A magnetic stirring device according to claim 1, characterized in that: The shape of the blade is one of U-shape, spiral shape and semi-arc shape.

5. A magnetic stirring device according to claim 1, characterized in that: The stirring kettle and the stirring device are made of non-ferromagnetic metal or non-ferromagnetic alloy.

6. A magnetic stirring device according to claim 1, characterized in that: An observation window and a temperature sensor are provided on the upper stirring kettle.

7. A magnetic stirring device according to claim 1, characterized in that: A sealing gasket is arranged between the upper stirring kettle protrusion and the lower stirring kettle protrusion.

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