A magnetic stirrer

Abstract

The utility model discloses a magnetic stirring rod, include: magnetic core, magnetic core cover, annular support part, first casing, second casing, the magnetic core cover is used for to the magnetic core spacing fixed, first casing with second casing buckling is in the both sides of annular support part and forms the sealed space. The utility model discloses through the magnetic core cover to the magnetic core spacing fixed, and first casing and second casing buckling are in the both sides of annular support part and form the sealed space, and the magnetic stirring rod is contacted with the magnetic force rotating device through annular support part and carries out the rotary motion, has solved the contact surface of the stirring rod and the container bottom in the prior art larger, leads to the friction of the resistance generation and reduces the problem of stirring efficiency, and produces the problem of greater noise simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of stirring vessel technology, and in particular to a magnetic stir bar. Background Technology

[0002] Magnetic stirring is a commonly used stirring method in liquid mixing. It is mainly used to stir and mix different types of liquids. Magnetic stir bar is widely used in the field of magnetic stirring. It uses a magnetic drive device at the bottom of the cup to drive the magnetic stir bar to rotate at the bottom of the cup, thereby uniformly stirring and mixing the liquid in the cup.

[0003] Existing stir bar structures typically consist of an internal magnet encased in an external plastic shell. Due to the large contact area between the stir bar and the bottom of the container, the resistance encountered is also significant, which can easily cause the stir bar to stop rotating and reduce stirring efficiency. At the same time, the friction generated by the large contact area can also produce a lot of noise, affecting the user experience.

[0004] Therefore, it is necessary to propose a magnetic stir bar to solve the problems in the existing technology where the contact area between the stir bar and the bottom of the container is large, resulting in friction due to resistance, which reduces the stirring efficiency and generates a lot of noise. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art that the contact area between the stir bar and the bottom of the container is large, resulting in friction due to resistance, which reduces stirring efficiency and generates a lot of noise.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a magnetic stirrer, comprising: a magnetic core, a magnetic core sleeve, an annular support portion, a first housing, and a second housing. The magnetic core sleeve is used to limit and fix the magnetic core. The first housing and the second housing are fastened to both sides of the annular support portion to form a sealed space.

[0008] Furthermore, the annular support portion is composed of a single support ring or multiple support rings.

[0009] Furthermore, the top of the individual support ring has a convex arc surface.

[0010] Furthermore, the multiple support rings are arranged side by side, and the height of the multiple support rings decreases from the middle to both sides.

[0011] Furthermore, the magnetic core sleeve and the annular support are made of plastic material.

[0012] Furthermore, the first and second housings are made of stainless steel.

[0013] Furthermore, the magnetic core sleeve is composed of two symmetrical halves along the long axis of the magnetic core sleeve; the two halves of the magnetic core sleeve form a sealed groove through a sealing part, and the sealed groove is used to fix the magnetic core.

[0014] Furthermore, the sealing part is composed of a male tenon and a female tenon with matching structures. By setting the male and female tenons on the connecting surfaces of the two magnetic core sleeves respectively, a sealed groove is formed when the male and female tenons are fitted together.

[0015] Furthermore, the magnetic core sleeve is provided with a positioning part for precise positioning when the two halves of the magnetic core sleeve are engaged.

[0016] Furthermore, the positioning part is formed by the engagement of protrusions and recesses on the mating surface of the magnetic core assembly; there are one or more positioning parts.

[0017] This utility model also provides a magnetic stirrer, including a magnetic core, a magnetic core sleeve, an annular support portion, and an outer shell. The magnetic core sleeve is used to limit and fix the magnetic core, and the outer shell is used to enclose the magnetic core and the magnetic core sleeve to form a sealed space. The annular support portion is sleeved and fixed in the middle of the outer shell.

[0018] Furthermore, the magnetic core sleeve is made of plastic material, the outer shell is made of stainless steel material, and the annular support part is made of plastic material;

[0019] Furthermore, the cross-sectional height of the annular support portion is higher in the middle and lower on both sides.

[0020] The beneficial effects of this utility model are as follows:

[0021] This invention uses a magnetic core sleeve to limit and fix the magnetic core, and fastens the first and second housings to both sides of the annular support to form a sealed space. The magnetic stirrer is configured with a single or multiple support rings in the annular support. The top of the single support ring has a convex arc surface, and the height of the multiple support rings decreases from the middle to both sides. When the magnetic stirrer is working, it rotates by contacting the magnetic rotating device through the convex arc surface at the top of the single support ring or through the highest support ring in the middle. This results in a smaller contact area between the magnetic stirrer and the magnetic rotating device, which effectively reduces friction when the magnetic stirrer rotates. This improves the rotation efficiency of the magnetic stirrer and also helps to reduce the noise caused by friction.

[0022] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description, claims, and drawings. Attached Figure Description

[0023] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of a magnetic stir bar according to an embodiment of the present invention is shown;

[0025] Figure 2 This diagram shows another structural schematic of a magnetic stir bar according to an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of another embodiment of the present invention without a magnetic core is shown;

[0027] Figure 4 This diagram shows another structural schematic of a magnetic stirrer according to another embodiment of the present invention.

[0028] Figure 5 A cross-sectional view of a magnetic stirrer according to another embodiment of the present invention is shown;

[0029] Figure 6 A cross-sectional view of a magnetic stirrer according to another embodiment of the present invention is shown;

[0030] Figure 7 An exploded view of a magnetic stirrer according to another embodiment of the present invention is shown;

[0031] Figure 8 A schematic diagram of the structure of a magnetic stirrer according to another embodiment of the present invention is shown.

[0032] In the figure: 1. Magnetic core; 2. Magnetic core sleeve; 3. Annular support part; 4. First shell; 5. Second shell; 6. Sealed slot; 7. Female tenon; 8. Male tenon; 9. Positioning part; 10. Protrusion; 11. Recess; 111. Magnetic core; 112. Magnetic core sleeve; 113. Annular support part; 114. Outer shell. Detailed Implementation

[0033] 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 protection scope of the present utility model.

[0034] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] Example

[0036] like Figure 1-8 As shown, this utility model provides a magnetic stirrer, including: a magnetic core 1, a magnetic core sleeve 2, an annular support 3, a first housing 4, and a second housing 5. The magnetic core sleeve 2 is used to limit and fix the magnetic core 1. The first housing 4 and the second housing 5 are fastened to both sides of the annular support 3 to form a sealed space.

[0037] Preferably, the annular support portion 3 is composed of a single support ring or multiple support rings, wherein the annular support portion 3 is disposed on the outer periphery of the middle portion of the magnetic core sleeve 2, the inner wall of the annular support portion 3 is fixedly fitted to the outer wall of the magnetic core sleeve 2, and the annular support portion 3 is fixedly sleeved at the center of the magnetic core sleeve 2. Specifically, as shown... Figure 1 and Figure 2 As shown, the top of the single support ring has a convex arc surface, which allows the magnetic stir bar to rotate through the convex arc surface of the top of the single support ring during operation. This design results in a smaller contact area between the magnetic stir bar and the magnetic rotating device, which can effectively reduce friction when the magnetic stir bar rotates. This not only improves the rotation efficiency of the magnetic stir bar but also helps to reduce the noise caused by friction.

[0038] like Figure 3 and Figure 4 As shown in another embodiment of this utility model, the multiple support rings are arranged side by side, and the height of the multiple support rings decreases from the middle to both sides, so that the magnetic stir bar rotates through the highest support ring in the middle when it is working. This arrangement makes the contact area between the magnetic stir bar and the magnetic rotation device smaller, which can effectively reduce friction when the magnetic stir bar rotates. This not only improves the rotation efficiency of the magnetic stir bar, but also helps to reduce the noise caused by friction.

[0039] Preferably, the magnetic core sleeve 2 and the annular support portion 3 are made of plastic material. The first shell 4 and the second shell 5 are made of stainless steel. The first shell 4 and the second shell 5 constitute the outer shell of the stirrer. The first shell 4 and the second shell 5 are fastened together. The first shell 4 and the second shell 5 are fastened together with both sides of the annular support portion 3 and seal the magnetic core sleeve 2. After fastening, the first shell 4 and the second shell 5 are symmetrically arranged about the annular support portion 3, which can ensure that the structure of the magnetic stirrer is in a state close to equilibrium.

[0040] Preferably, the magnetic core sleeve 2 is composed of two symmetrical halves along the long axis of the magnetic core sleeve 2; the two halves of the magnetic core sleeve 2 can be connected by ultrasonic connection, and the two halves of the magnetic core sleeve 2 form a sealed groove 6 through a sealing part, the sealed groove 6 being used to fix the magnetic core 1.

[0041] like Figure 5 As shown, the sealing part is composed of a male tenon 7 and a female tenon 8 with matching structures. By setting the male tenon 7 and the female tenon 8 on the connecting surface of the two magnetic core sleeves 2 respectively, when the male tenon 7 and the female tenon 8 are installed together, a sealed cavity 6 is formed. Specifically, the male tenon 7 and the female tenon 8 are respectively arranged around the sealed cavity 6 around the top edge of the two magnetic core sleeves 2. The magnetic core 1 is set in the sealed cavity 6. The side cut surfaces of the male tenon 7 and the female tenon 8 are U-shaped or V-shaped.

[0042] In another embodiment of this utility model, the sealing part is composed of a sealing rubber layer. By setting the sealing rubber layer at the connection of the two magnetic core sleeves 2, a sealed groove 6 is formed.

[0043] like Figure 6 As shown, the magnetic core sleeve 2 is provided with a positioning part 9, which is used to accurately position the two halves of the magnetic core sleeve 2 when they are engaged, and then the two halves of the magnetic core sleeve are fixedly installed using ultrasonic waves.

[0044] Specifically, the positioning part 9 is formed by the cooperation of protrusions 10 and recesses 11 on the mounting surface of the magnetic core sleeve 2; one of the two magnetic core sleeves 2 has a protrusion 10 on its mounting surface, and the other has a recess 11 on its mounting surface. The precise positioning of the two magnetic core sleeves 2 is achieved through the cooperation of the protrusions 10 and the recesses 11. There are one or more positioning parts 9, with the protrusions 10 of multiple positioning parts 9 distributed on the same magnetic core sleeve 2 or on different magnetic core sleeves 2, and the recesses 11 of multiple positioning parts 9 distributed on the same magnetic core sleeve 2 or on different magnetic core sleeves 2.

[0045] like Figure 7 and Figure 8 As shown, this utility model also provides a magnetic stirrer, including a magnetic core 111, a magnetic core sleeve 112, an annular support 113, and an outer shell 114. The magnetic core sleeve 112 is used to limit and fix the magnetic core 111, and the outer shell 114 is used to wrap the magnetic core 111 and the magnetic core sleeve 112 to form a sealed space. The annular support 113 is sleeved and fixed in the middle of the outer shell 114.

[0046] Furthermore, the magnetic core sleeve 112 is made of plastic material, the outer shell 114 is made of stainless steel material, and the annular support portion 113 is made of plastic material;

[0047] Furthermore, the cross-sectional height of the annular support 113 is higher in the middle and lower on both sides, so that the magnetic stir bar rotates through the highest part in the middle of the annular support 113 during operation. This design makes the contact area between the magnetic stir bar and the magnetic rotating device smaller, which can effectively reduce friction when the magnetic stir bar rotates. This not only improves the rotation efficiency of the magnetic stir bar, but also helps to reduce the noise caused by friction.

[0048] When the liquid needs to be stirred and mixed, the magnetic stir bar rotates at the bottom of the cup under the traction of the magnetic drive device. While the magnetic stir bar is rotating, the top of a single support ring is set with a convex arc surface, or when multiple support rings are arranged side by side, the height of the multiple support rings decreases from the middle to both sides, so that the contact area between the magnetic stir bar and the magnetic rotation device is smaller. When the magnetic stir bar rotates, it can effectively reduce friction, which not only improves the rotation efficiency of the magnetic stir bar, but also helps to reduce the noise caused by friction.

[0049] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0050] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A magnetic stir bar, comprising: A magnetic core (1), a magnetic core sleeve (2), an annular support (3), a first housing (4), and a second housing (5), characterized in that the magnetic core sleeve (2) is used to limit and fix the magnetic core (1), and the first housing (4) and the second housing (5) are fastened to both sides of the annular support (3) to form a sealed space; The annular support (3) is composed of multiple support rings; The multiple support rings are arranged side by side, and the height of the multiple support rings decreases from the middle to both sides; The annular support part (3) is located on the outer periphery of the middle part of the magnetic core sleeve (2), and the inner wall of the annular support part (3) is fixedly attached to the outer wall of the magnetic core sleeve (2).

2. The magnetic stir bar according to claim 1, characterized in that, The magnetic core sleeve (2) and the annular support (3) are made of plastic material.

3. A magnetic stir bar according to claim 1, characterized in that, The first housing (4) and the second housing (5) are made of stainless steel.

4. A magnetic stir bar according to claim 1, characterized in that, The magnetic core sleeve (2) is composed of two symmetrical halves along the long axis of the magnetic core sleeve (2); the two halves of the magnetic core sleeve (2) form a sealed groove (6) through a sealing part, and the sealed groove (6) is used to fix the magnetic core (1).

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