Temperature-controlled magnetic stirrer

Abstract

The utility model discloses a temperature -controlled magnetic stirrer, specifically related to the technical field of stirrer, including stirring mechanism, the outside of stirring mechanism is provided with cover plate mechanism and fetch mechanism, the stirring mechanism includes control base plate and installs the placement tray above control base plate, and the upper portion of placement tray is placed with container, and the container is placed with stirrer, and the upper portion fixedly connected with support and auxiliary support bar of control base plate. The utility model discloses the cooperation of auxiliary support bar, cover plate mechanism and fetch mechanism, and the diagonal line distribution design of support and auxiliary support bar restricts the rotation angle of cover plate mechanism, makes container rotate 135 after and automatically centring to the center of placement tray and clamping positioning, and the cooperation of cover plate down pressure plugging container port prevents liquid from throwing out when stirring, and fetch mechanism utilizes the magnetic attraction of metal block and stirrer and realizes quick adsorption and release, and the pickup sleeve rod of its columnar structure adopts high temperature -resistant corrosion -resistant material, and simplifies the operation process and improves cleaning maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of stirrer technology, and in particular to a temperature-controlled magnetic stirrer. Background Technology

[0002] A magnetic stirrer is a laboratory device that uses a magnetic field to drive the stir bar to rotate. It is widely used in liquid mixing and temperature control experiments in fields such as chemistry, biology and materials science. Its core consists of a magnetic coupling system, which achieves the dual functions of stirring and temperature control through a bottom heating plate and a rotating magnetic field.

[0003] The inventors have discovered at least the following problems in the prior art:

[0004] Modern magnetic stirrers have temperature control and stir bar speed adjustment functions. When using them, the container needs to be placed on the tray of the magnetic stirrer, and then the stir bar is placed inside the container. The stir bar is rotated by controlling the rotation of the magnetic shaft inside the stirrer. However, since the container is not in the center of rotation of the stir bar when it is placed, it needs to be manually adjusted frequently, which is inconvenient to use. At the same time, if the operation is not correct and the speed is too fast or the wrong container is selected, the liquid inside can easily be thrown out, which can damage the magnetic stirrer and affect its service life.

[0005] In addition, after mixing, the stir bar needs to be removed from the container using tongs, and the stir bar and tongs need to be cleaned. Due to the complexity of the tongs, more time is required for cleaning, which reduces work efficiency.

[0006] Therefore, this solution provides a temperature-controlled magnetic stirrer to address the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to provide a temperature-controlled magnetic stirrer to solve the problems existing in the prior art.

[0008] To solve the above-mentioned technical problems, the basic technical solution proposed by this utility model is as follows:

[0009] A temperature-controlled magnetic stirrer includes a stirring mechanism, an external cover mechanism, and a pick-up mechanism. The stirring mechanism includes a control base and a placement tray mounted on top of the control base. A container is placed on top of the placement tray, and a stir bar is placed inside the container. A bracket and an auxiliary support rod are fixedly connected above the control base, and the bracket and auxiliary support rod are diagonally distributed. The cover mechanism includes a cover plate and positioning ear plates and snap-fit ​​ear plates fixedly connected to both sides of the cover plate, and also includes two symmetrical L-shaped sliding plates slidably connected below the cover plate. The pick-up mechanism includes a pick-up sleeve and a pick-up insert rod slidably connected up and down inside the pick-up sleeve, and a metal block is fixedly connected to the bottom end of the pick-up insert rod.

[0010] Preferably, a cross clamp is installed on the periphery of the bracket, a temperature measuring rod is installed on one side of the cross clamp, a central insertion hole and a through hole are opened on the top of the cover plate, the temperature measuring rod passes through the through hole, and the central insertion hole fits the periphery of the pickup sleeve.

[0011] Preferably, a friction pad is fixedly connected to the inner side of the snap-fit ​​ear plate, the friction pad is in contact with the outer periphery of the auxiliary support rod, the positioning ear plate is penetrated by the bracket, and a positioning knob is threadedly connected to one side of the positioning ear plate.

[0012] Preferably, the cover plate is rotatably connected to a positive and negative lead screw, and the two ends of the positive and negative lead screw pass through an L-shaped sliding plate. The cover plate has a sliding groove inside, and the L-shaped sliding plate is slidably connected inside the sliding groove.

[0013] Preferably, the L-shaped sliding plate is located below the cover plate, and a pad is fixedly connected to the side of the two L-shaped sliding plates that are close to each other.

[0014] Preferably, the inside of the pickup sleeve has a pressing cavity and an adsorption cavity that are connected vertically, and the metal block is located inside the adsorption cavity.

[0015] Preferably, the pickup rod is fixedly connected to a receiving ring inside the pressing cavity, and a spring is provided below the receiving ring, with the spring surrounding the pickup rod.

[0016] The beneficial effects of this utility model are:

[0017] I. This utility model, through the cooperation of the auxiliary support rod, cover plate mechanism and picking mechanism, and the diagonal distribution of the bracket and auxiliary support rod, restricts the rotation angle of the cover plate mechanism, so that the container automatically centers to the center of the placement tray after the cover plate mechanism rotates. At this time, the container is clamped and positioned, so that the container can be aligned with the center of the placement tray without frequent manual adjustment, which is convenient to use. At the same time, the cover plate mechanism can seal the top of the container, thus not only improving the stability of the stirring rotor rotation, but also avoiding the risk of liquid splashing due to container displacement.

[0018] Second, this utility model utilizes the cooperation of an auxiliary support rod, a cover plate mechanism, and a picking mechanism. The picking mechanism uses the magnetic attraction between the metal block and the stirring rod to quickly attract and release the stirring rod without the need for additional clamps, simplifying the operation process and reducing cleaning complexity. Furthermore, the picking rod is made of a columnar structure and high-temperature and corrosion-resistant materials, making it easy to clean and maintain, and significantly improving work efficiency. Attached Figure Description

[0019] Figure 1 This is an overall perspective view of Embodiment 1 of the present utility model;

[0020] Figure 2This is a schematic diagram of the stirring mechanism according to Embodiment 1 of this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the cover plate mechanism according to Embodiment 1 of this utility model;

[0022] Figure 4 This is a side cross-sectional view of the overall taking mechanism of Embodiment 1 of this utility model;

[0023] Figure 5 This is a split side cross-sectional view of the picking mechanism of Embodiment 1 of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Stirring mechanism; 11. Control base; 12. Placement tray; 13. Stirring rod; 14. Support; 15. Cross clamp; 16. Temperature measuring rod; 2. Auxiliary support rod;

[0026] 3. Cover plate mechanism; 31. Cover plate; 311. Center insertion hole; 312. Through hole; 32. Positioning knob; 33. Snap-fit ​​ear plate; 34. Friction pad; 35. Slide groove; 36. Positive and negative lead screw; 37. L-shaped slide plate; 38. Pad plate; 39. Positioning ear plate;

[0027] 4. Picking mechanism; 41. Picking sleeve; 42. Pressing chamber; 43. Adsorption chamber; 44. Picking insertion rod; 45. Receiving ring; 46. Spring; 47. Metal block. Detailed Implementation

[0028] Please refer to the following. Figures 1 to 5 As shown, the technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0029] It should be noted that, in the embodiments of this utility model, the directions shown in the accompanying drawings shall prevail, such as front and back. Figure 1 For the sake of accuracy, the specific details should be as follows: Figure 1 The left side is the front. Figure 1 The right side is the rear; at the same time, as Figure 2 As shown, the horizontal direction is roughly defined as left and right, and the vertical direction is defined as up and down. If a specific orientation changes, the directional indication will also change accordingly.

[0030] This utility model provides a temperature-controlled magnetic stirrer, including a stirring mechanism 1, and a cover mechanism 3 and a picking mechanism 4 are provided on the outside of the stirring mechanism 1.

[0031] The stirring mechanism 1 includes a control base 11 and a placement plate 12 mounted on the control base 11. A container is placed on the placement plate 12, and a stirring rod 13 is placed inside the container. A bracket 14 and an auxiliary support rod 2 are fixedly connected to the top of the control base 11. The bracket 14 and the auxiliary support rod 2 are distributed diagonally.

[0032] The cover plate mechanism 3 includes a cover plate 31 and positioning ear plates 39 and snap-fit ​​ear plates 33 fixedly connected to both sides of the cover plate 31, and also includes two symmetrical L-shaped sliding plates 37 slidably connected to the bottom of the cover plate 31.

[0033] The picking mechanism 4 includes a picking sleeve 41 and a picking insertion rod 44 that is slidably connected up and down inside the picking sleeve 41. A metal block 47 is fixedly connected to the bottom end of the picking insertion rod 44.

[0034] The stirring mechanism 1 is a temperature-controlled magnetic stirrer as in the prior art.

[0035] In a further embodiment, a cross clamp 15 is installed on the periphery of the bracket 14, and a temperature measuring rod 16 is installed on one side of the cross clamp 15. A central insertion hole 311 and a through hole 312 are opened on the top of the cover plate 31. The temperature measuring rod 16 passes through the through hole 312, and the central insertion hole 311 fits the periphery of the pickup sleeve 41.

[0036] In this embodiment, the top of the temperature measuring rod 16 is connected to the control base 11 via a circuit, thereby providing feedback on the temperature of the liquid.

[0037] In a further embodiment, a friction pad 34 is fixedly connected to the inner side of the snap-fit ​​ear plate 33. The friction pad 34 fits against the outer periphery of the auxiliary support rod 2. The positioning ear plate 39 is penetrated by the bracket 14. A positioning knob 32 is threadedly connected to one side of the positioning ear plate 39.

[0038] In this embodiment, there is a notch on one side of the snap-fit ​​ear plate 33, and the friction pad 34 is fixedly connected in the notch. The notch fits the outer periphery of the auxiliary support rod 2. Since the auxiliary support rod 2 and the bracket 14 are located at the diagonal of the placement tray 12, the cover plate mechanism 3 can only rotate 135 degrees around the bracket 14. In the initial position, the cover plate mechanism 3 is located on the outside, but after rotation, the center of the cover plate 31 is aligned with the center of the placement tray 12. Therefore, after rotating the positive and negative screws 36, it can not only clamp the container but also keep the container in the center of the placement tray 12 without manual adjustment, making it more convenient to use.

[0039] In a further embodiment, a positive and negative lead screw 36 is rotatably connected inside the cover plate 31, and an L-shaped sliding plate 37 is passed through both ends of the positive and negative lead screw 36. A groove 35 is opened inside the cover plate 31, and part of the L-shaped sliding plate 37 is slidably connected inside the groove 35.

[0040] In this embodiment, the positive and negative lead screw 36 has a knob on the outside of the cover plate 31, which facilitates rotation, and the positive and negative lead screw 36 is offset from the center insertion hole 311.

[0041] In a further embodiment, part of the L-shaped slide plate 37 is located below the cover plate 31, and a pad plate 38 is fixedly connected to the side of the two L-shaped slide plates 37 that are close to each other.

[0042] In this embodiment, the pad 38 is used to prevent damage to the container when clamping it.

[0043] In a further embodiment, the inside of the picking sleeve 41 is provided with a pressing cavity 42 and an adsorption cavity 43 that are connected vertically, and the metal block 47 is located inside the adsorption cavity 43.

[0044] In this embodiment, the material of the picking mechanism 4 is the same as that of the outer shell of the stirrer 13, both being made of high-temperature resistant and corrosion-resistant materials.

[0045] In a further embodiment, a receiving ring 45 is fixedly connected to the pickup rod 44 inside the pressing cavity 42, and a spring 46 is provided below the receiving ring 45, with the spring 46 surrounding the periphery of the pickup rod 44.

[0046] In this embodiment, the stir bar 13 has a magnetic block inside, so that when the metal block 47 moves down, the stir bar 13 is attracted to the bottom end of the pickup sleeve 41.

[0047] The working principle of this utility model is as follows:

[0048] When it is necessary to stir the liquid in the container, the stir bar 13 can be placed in and the cover plate mechanism 3 can be rotated so that the cover plate mechanism 3 rotates 135 degrees around the support 14 and reaches the top of the placement plate 12. At this time, the positive and negative screws 36 can be rotated so that the two L-shaped slide plates 37 move closer to the middle to limit the container, so that the container is in the center of the placement plate 12. Then the cover plate 31 is pressed down so that it fits the port of the container, thereby preventing leakage of the liquid in the container due to accident, and thus protecting the stirring mechanism 1 and extending its service life.

[0049] After the cover plate mechanism 3 rotates 135 degrees, the locking ear plate 33 will be locked on the outer periphery of the auxiliary support rod 2, thereby providing auxiliary support to the other side of the cover plate mechanism 3, which will facilitate the downward movement of the cover plate mechanism 3.

[0050] After the cover plate mechanism 3 is closed, the height of the cover plate mechanism 3 can be limited by rotating the positioning knob 32, and the position of the temperature measuring rod 16 can be adjusted and then passed through the through hole 312 into the container, so that the bottom of the temperature measuring rod 16 contacts the liquid. Then, stirring can be started by controlling the base 11.

[0051] After stirring, the height of the cover plate mechanism 3 can be raised first. Then, hold the picking rod 41 and pass it through the central insertion hole 311 so that its bottom enters the container. Press the picking rod 44 so that the metal block 47 reaches the bottom of the adsorption chamber 43, and then the magnetic stir bar 13 is adsorbed at the bottom of the picking rod 41. Then, remove the container and place the collection box on the placement tray 12. Then release the picking rod 44. At this time, the metal block 47 will move away from the stir bar 13 under the rebound of the spring 46, and then the stir bar 13 can be picked up. Since the picking rod 41 is cylindrical, it will be more convenient to clean it later.

[0052] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A temperature-controlled magnetic stirrer, comprising a stirring mechanism (1), characterized in that, The stirring mechanism (1) is provided with a cover plate mechanism (3) and a picking mechanism (4) on its exterior; The stirring mechanism (1) includes a control base (11) and a placement plate (12) installed above the control base (11). A container is placed above the placement plate (12), and a stirring rod (13) is placed inside the container. A bracket (14) and an auxiliary support rod (2) are fixedly connected above the control base (11). The bracket (14) and the auxiliary support rod (2) are diagonally distributed. The cover plate mechanism (3) includes a cover plate (31) and positioning ear plates (39) and snap-fit ​​ear plates (33) fixedly connected to both sides of the cover plate (31), and also includes two symmetrical L-shaped sliding plates (37) slidably connected to the bottom of the cover plate (31); The picking mechanism (4) includes a picking sleeve (41) and a picking insert (44) that is slidably connected inside the picking sleeve (41). A metal block (47) is fixedly connected to the bottom end of the picking insert (44).

2. The temperature-controlled magnetic stirrer according to claim 1, characterized in that: A cross clamp (15) is installed on the periphery of the bracket (14), and a temperature measuring rod (16) is installed on one side of the cross clamp (15). A central insertion hole (311) and a through hole (312) are opened on the top of the cover plate (31). The temperature measuring rod (16) passes through the through hole (312), and the central insertion hole (311) fits the periphery of the pickup sleeve (41).

3. The temperature-controlled magnetic stirrer according to claim 1, characterized in that: The inner side of the snap-fit ​​ear plate (33) is fixedly connected to a friction pad (34), which fits against the outer periphery of the auxiliary support rod (2). The positioning ear plate (39) is penetrated by the bracket (14), and a positioning knob (32) is threadedly connected to one side of the positioning ear plate (39).

4. A temperature-controlled magnetic stirrer according to claim 1, characterized in that: The cover plate (31) is rotatably connected to a positive and negative lead screw (36), and the two ends of the positive and negative lead screw (36) are connected to an L-shaped sliding plate (37). The cover plate (31) is provided with a sliding groove (35), and part of the L-shaped sliding plate (37) is slidably connected inside the sliding groove (35).

5. A temperature-controlled magnetic stirrer according to claim 1, characterized in that: Part of the L-shaped slide plate (37) is located below the cover plate (31), and a pad plate (38) is fixedly connected to the side of the two L-shaped slide plates (37) that are close to each other.

6. A temperature-controlled magnetic stirrer according to claim 1, characterized in that: The inside of the picking sleeve (41) is provided with a pressing cavity (42) and an adsorption cavity (43) that are connected vertically, and the metal block (47) is located inside the adsorption cavity (43).

7. A temperature-controlled magnetic stirrer according to claim 1, characterized in that: The pickup rod (44) is fixedly connected to a receiving ring (45) inside the pressing cavity (42). A spring (46) is provided below the receiving ring (45) and the spring (46) surrounds the periphery of the pickup rod (44).

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