An adjustable magnetic stirrer

Abstract

The utility model belongs to magnetic stirrer technical field, concretely is a kind of adjustable magnetic stirrer, including base, the base middle part is provided with magnetic stirrer body;The base top is fixedly connected with a pair of electric push rod;The electric push rod top is fixedly connected with rack for placing;The rack for placing end is fixedly connected with placing plate;The placing plate top is provided with stirring cup;By increasing a pair of electric push rod, the distance between stirring cup and magnetic stirrer body can be adjusted when stirring, when adjusting, magnetic stirrer body is still in high-speed rotation, and rotor is also driven to stir simultaneously, so that the magnetic force influence that rotor receives is adjusted by distance, so that more flexible response to different viscosity liquid, while when needing to take out rotor, stirring cup can also be gradually raised to make rotor leave magnetic force range, then it can be taken out by forceps, so that magnetic stirrer body does not need to be closed.

Description

Technical Field

[0001] This utility model relates to the field of magnetic stirrer technology, specifically an adjustable magnetic stirrer. Background Technology

[0002] The sponge production process typically involves first mixing raw materials such as polyols and isocyanates in a specific ratio, then thoroughly mixing them using a magnetic stirrer, adding catalysts, foaming agents, and other additives, and continuing to stir. The mixture is then injected into a mold to foam, solidify, and finally cut and trim to obtain the finished product.

[0003] A magnetic stirrer is a laboratory instrument used for mixing liquids. It is mainly used to stir low-viscosity liquids or solid-liquid mixtures. Its basic principle is to use the principle of like poles repelling and unlike poles attracting in magnetic fields. The magnetic field drives a magnetic stir bar placed in a container to rotate in a circular motion, thereby achieving the purpose of stirring the liquid.

[0004] Existing magnetic stirrers require the rotor to be placed inside the mixing bowl before use, and then the rotor is driven to rotate by the magnetic force at the bottom. However, if the rotor speed is increased for stirring, the rotor will slip and affect the stirring effect because it is difficult to follow the magnetic force of the stirrer.

[0005] Therefore, an adjustable magnetic stirrer is proposed to address the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: An adjustable magnetic stirrer of this utility model includes a base, with a magnetic stirrer body disposed in the middle of the base; a pair of electric push rods are fixedly connected to the top of the base; a placement frame is fixedly connected to the top of the electric push rods; a placement plate is fixedly connected to the end of the placement frame; a stirring cup is disposed on the top of the placement plate; by adding a pair of electric push rods, the distance between the stirring cup and the magnetic stirrer body can be adjusted during stirring. After adjustment, the magnetic stirrer body is still rotating at high speed while driving the rotor to stir. Thus, by adjusting the distance, the magnetic force on the rotor is adjusted, thereby more flexibly handling liquids of different viscosities. Furthermore, when it is necessary to remove the rotor, the stirring cup can be gradually raised to allow the rotor to leave the magnetic field range, and then it can be removed with tweezers, thus eliminating the need to turn off the magnetic stirrer body.

[0008] Preferably, a support frame is fixedly connected to the top of the placement rack; a square plate is rotatably connected to the end of the support frame; a cover plate is fixedly connected to the end of the square plate; by adding a cover plate, the top of the mixing cup can be closed, thereby intercepting the liquid when it is being rapidly stirred, so that when the liquid splashes, it stays inside the mixing cup and reduces splashing to the surrounding area.

[0009] Preferably, a magnet is fixed to the inner wall of the square plate; a metal plate is fixed to the inner wall of the support frame; by adding the magnet and the metal plate, the cover plate can be fixed after it is rotated, making the cover plate more stable when it stays on the stirring cup.

[0010] Preferably, a friction pad is fixed to the bottom of the base; multiple friction pads are provided on the base; by adding friction pads, the stability of the base and the worktable surface when in contact can be increased through the friction of the friction pads.

[0011] Preferably, a counterweight plate is provided on the top of the cover plate; a pair of sponges are fixedly connected to the bottom of the counterweight plate; the sponges and the cover plate are in a sliding fit; by adding sponges, splashed liquid can be absorbed, allowing the liquid to enter the interior of the sponges, thereby increasing the collection of splashed liquid.

[0012] Preferably, a slider is slidably connected to the surface of the cover plate; a baffle is fixedly connected to the end of the slider; by adding the slider, the counterweight plate can be supported, so that the counterweight plate is initially fixed when the mixing cup is picked up, increasing the convenience of picking up the mixing cup.

[0013] The advantages of this utility model are:

[0014] 1. The adjustable magnetic stirrer of this utility model allows for adjustment of the distance between the stirring cup and the magnetic stirrer body during stirring by adding a pair of electric actuators. After adjustment, the magnetic stirrer body continues to rotate at high speed while driving the rotor to stir. By adjusting the distance, the magnetic force on the rotor is adjusted, thus more flexibly handling liquids of different viscosities. At the same time, when it is necessary to remove the rotor, the stirring cup can be gradually raised to make the rotor leave the magnetic field range, and then it can be removed with tweezers, so that the magnetic stirrer body does not need to be turned off.

[0015] 2. The adjustable magnetic stirrer of this utility model can close the top of the stirring cup by adding a cover plate. In this way, when the liquid is being stirred rapidly, the liquid is intercepted by the cover plate, so that when the liquid splashes, it stays inside the stirring cup and reduces splashing to the surrounding area. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the main body of this utility model;

[0018] Figure 2 This is a schematic diagram of the support frame in this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the placement plate in this utility model;

[0020] Figure 4 This is a schematic diagram of the counterweight plate in this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the metal plate in this utility model.

[0022] In the diagram: 1. Base; 11. Magnetic stirrer body; 12. Electric push rod; 13. Placement rack; 14. Placement plate; 15. Stirring cup; 2. Support frame; 21. Square plate; 22. Cover plate; 3. Magnet; 31. Metal plate; 4. Friction pad; 5. Counterweight plate; 51. Sponge; 6. Slider; 61. Baffle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0024] Specific implementation examples are given below.

[0025] like Figures 1 to 5As shown in the embodiment of this utility model, an adjustable magnetic stirrer includes a base 1, with a magnetic stirrer body 11 disposed in the middle of the base 1; a pair of electric push rods 12 are fixedly connected to the top of the base 1; a placement frame 13 is fixedly connected to the top of the electric push rods 12; a placement plate 14 is fixedly connected to the end of the placement frame 13; and a stirring cup 15 is disposed on the top of the placement plate 14. During operation, the stirring cup 15 is first placed between the pair of placement plates 14, and then the rotor is placed inside the stirring cup 15. After placement, the magnetic stirrer body 11 is activated, which drives the rotor inside the stirring cup 15 to rotate. When placing a liquid with low viscosity, the pair of electric push rods 12 are activated by an electronic controller to move the placement frame 13 upwards. After upward movement, the state of the rotor is observed. At this time, the magnetic force on the rotor is relatively weak, thus reducing foaming and splashing during stirring. When stirring a liquid with high viscosity, the electric push rods 12 are lowered, causing the stirring cup 15 and the magnetic stirrer body to rotate. The shortening of the distance between the stirrer bodies 11 increases the magnetic force on the rotor, thereby increasing the rotor's rotation speed and enhancing the stirring effect on the liquid. Thus, while the magnetic stirrer bodies 11 are operating at high speed, adjusting the distance between the stirring cup 15 and the magnetic stirrer bodies 11 allows for finding a suitable distance to drive the rotor's rotation. This adjustment of the distance between the stirring cup 15 and the magnetic stirrer bodies 11 further enhances the flexibility in stirring different liquids. Adding a pair of electric actuators 12 allows for adjustment of the distance between the stirring cup 15 and the magnetic stirrer bodies 11 during stirring. Even after adjustment, the magnetic stirrer bodies 11 continue to rotate at high speed while simultaneously driving the rotor to stir. This distance adjustment controls the magnetic force on the rotor, allowing for more flexible handling of liquids with different viscosities. Furthermore, when it is necessary to remove the rotor, the stirring cup 15 can be gradually raised to move the rotor out of the magnetic field, allowing it to be removed with tweezers without shutting down the magnetic stirrer bodies 11.

[0026] like Figures 1 to 3 As shown, a support frame 2 is fixedly connected to the top of the placement rack 13; a square plate 21 is rotatably connected to the end of the support frame 2; a cover plate 22 is fixedly connected to the end of the square plate 21; during operation, when the stirring cup 15 is placed on the placement plate 14, the square plate 21 can be rotated so that the end of the square plate 21 contacts the support frame 2. When in contact, the cover plate 22 will be located on top of the stirring cup 15. At this time, the cover plate 22 will close the top of the stirring cup 15. When stirring is performed after closing, the liquid splashing will be blocked by the cover plate 22; by adding the cover plate 22, the top of the stirring cup 15 can be closed, thereby intercepting the liquid when it is being stirred rapidly, so that the liquid splashing will stay inside the stirring cup 15 and reduce splashing to the surroundings.

[0027] like Figure 5As shown, a magnet 3 is fixed to the inner wall of the square plate 21; a metal plate 31 is fixed to the inner wall of the support frame 2. During operation, when the square plate 21 is rotated and comes into contact with the support frame 2, the magnet 3 will come into contact with the metal plate 31. When they come into contact, the magnet 3 and the metal plate 31 will magnetically attract each other, thereby fixing the cover plate 22. After the cover plate 22 is fixed, it can increase the stability above the mixing cup 15, thereby increasing the stability of the cover plate 22 when it shakes during rotation. By adding the magnet 3 and the metal plate 31, the cover plate 22 can be fixed after rotation, making the cover plate 22 more stable when it stays on the mixing cup 15.

[0028] like Figures 1 to 2 As shown, a friction pad 4 is fixedly attached to the bottom of the base 1; multiple friction pads 4 are arranged on the base 1; during operation, when shaking occurs during stirring, it will gradually be transmitted to the rest of the whole. When it is transmitted to the friction pad 4, the friction pad 4 will increase the friction with the ground, thereby reducing the displacement of the base 1; by adding friction pads 4, the stability of the base 1 when in contact with the workbench surface can be increased through the friction of the friction pads 4.

[0029] like Figures 3 to 4 As shown, a counterweight plate 5 is provided on the top of the cover plate 22; a pair of sponges 51 are fixedly connected to the bottom of the counterweight plate 5; the sponges 51 and the cover plate 22 are in sliding fit; during operation, when the top of the stirring cup 15 is closed using the cover plate 22, the counterweight plate 5 can drive the pair of sponges 51 to be inserted into the cover plate 22. When the sponges 51 enter the cover plate 22, they will protrude from the cover plate 22. At this time, the liquid splashed onto the cover plate 22 will be absorbed by the sponges 51, thereby reducing liquid dripping from the cover plate 22 when it is opened later; by increasing the sponges 51, the splashed liquid can be absorbed, allowing the liquid to enter the interior of the sponges 51, thereby increasing the aggregation of the splashed liquid.

[0030] like Figure 4 As shown, a slider 6 is slidably connected to the surface of the cover plate 22; a baffle 61 is fixedly connected to the end of the slider 6; during operation, after the counterweight plate 5 is lifted and the sponge 51 is driven into the interior of the cover plate 22, the slider 6 can be pushed so that the baffle 61 and the cover plate 22 come into contact. Then the slider 6 will be located between the cover plate 22 and the counterweight plate 5, thereby supporting the counterweight plate 5 and preventing it from moving down; by adding the slider 6, the counterweight plate 5 can be supported, so that the counterweight plate 5 can be initially fixed when the mixing cup 15 is picked up, increasing the convenience of picking up the mixing cup 15.

[0031] Working principle: In use, first place the mixing cup 15 between a pair of placement plates 14, then place the rotor inside the mixing cup 15. After placement, start the magnetic stirrer body 11. The magnetic stirrer body 11 will drive the rotor inside the mixing cup 15 to rotate. When mixing liquids with low viscosity, the electronic controller activates a pair of electric push rods 12 to move the placement rack 13 upwards. After upward movement, observe the rotor's state. At this time, the magnetic force on the rotor is relatively weak, thus reducing foaming and splashing during stirring. When mixing liquids with higher viscosity, lower the electric push rods 12 to move the mixing cup 15 and the magnetic stirrer... The shortening of the distance between the main bodies 11 increases the magnetic force on the rotor, thereby increasing the rotor's rotational speed and enhancing the stirring effect on the liquid. Thus, while the magnetic stirrer body 11 is operating at high speed, the distance between the stirring cup 15 and the magnetic stirrer body 11 is adjusted to find a suitable distance to drive the rotor's rotation. This adjustment of the distance between the stirring cup 15 and the magnetic stirrer body 11 allows for stirring of the liquid inside the stirring cup 15, increasing flexibility in stirring different liquids. After the stirring cup 15 is placed on the placement plate 14, the square plate 21 can be rotated so that its end contacts the support frame 2. When contact occurs, the cover plate 22... Located at the top of the mixing cup 15, the cover plate 22 closes the top of the mixing cup 15. When mixing, splashing liquid is blocked by the cover plate 22. When the square plate 21 is rotated and contacts the support frame 2, the magnet 3 contacts the metal plate 31. When they contact, the magnet 3 and the metal plate 31 are magnetically attracted, thus fixing the cover plate 22. Once the cover plate 22 is fixed, it increases the stability above the mixing cup 15, thereby increasing the stability of the cover plate 22 when shaking occurs during rotation. When shaking occurs during mixing, it will gradually be transmitted to the rest of the whole. When it is transmitted to the friction pad 4, the friction pad 4 will increase the friction with the ground, making... To reduce the displacement of the base 1 due to shaking; when closing the top of the mixing cup 15 using the cover plate 22, the counterweight plate 5 can be used to drive a pair of sponges 51 into the inside of the cover plate 22. After the sponges 51 enter the inside of the cover plate 22, they will protrude from the cover plate 22. At this time, the liquid splashed onto the cover plate 22 will be absorbed by the sponges 51, thereby reducing liquid dripping from the cover plate 22 when it is opened later; after lifting the counterweight plate 5 and driving the sponges 51 into the inside of the cover plate 22, the slider 6 can be pushed so that the baffle 61 contacts the cover plate 22. Then the slider 6 will be located between the cover plate 22 and the counterweight plate 5, thereby supporting the counterweight plate 5 and preventing it from moving down.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An adjustable magnetic stirrer, characterized in that: Includes a base (1), in which a magnetic stirrer body (11) is provided in the middle; a pair of electric push rods (12) are fixedly connected to the top of the base (1); a placement rack (13) is fixedly connected to the top of the electric push rods (12); a placement plate (14) is fixedly connected to the end of the placement rack (13); and a stirring cup (15) is provided on the top of the placement plate (14).

2. The adjustable magnetic stirrer according to claim 1, characterized in that: The top of the placement rack (13) is fixedly connected to a support frame (2); a square plate (21) is rotatably connected to the end of the support frame (2); and a cover plate (22) is fixedly connected to the end of the square plate (21).

3. An adjustable magnetic stirrer according to claim 2, characterized in that: A magnet (3) is fixed to the inner wall of the square plate (21); a metal plate (31) is fixed to the inner wall of the support frame (2).

4. An adjustable magnetic stirrer according to claim 3, characterized in that: The base (1) has a friction pad (4) fixedly attached to its bottom; there are multiple friction pads (4) on the base (1).

5. An adjustable magnetic stirrer according to claim 4, characterized in that: The top of the cover plate (22) is provided with a counterweight plate (5); a pair of sponges (51) are fixed to the bottom of the counterweight plate (5); the sponges (51) and the cover plate (22) are in sliding fit.

6. An adjustable magnetic stirrer according to claim 5, characterized in that: The cover plate (22) is slidably connected to a slider (6); a baffle (61) is fixedly connected to the end of the slider (6).

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