Multi-position magnetic stirrer for extracting polysaccharide

Abstract

A multi-position magnetic stirrer for polysaccharide extraction comprises a magnetic stirrer body, a rotating shaft and a multi-position turntable, a plurality of magnetic bases are arranged on the magnetic stirrer body, the rotating shaft is arranged in the center of the magnetic stirrer body, the plurality of magnetic bases are arranged around the rotating shaft, a through hole is formed in the middle of the multi-position turntable, and the rotating shaft is sleeved with the through hole. The rotating shaft is matched with the through hole to drive the multi-position rotating disc to rotate, and a plurality of cavities used for containing containers are formed in the multi-position rotating disc. The magnetic stirrer has the advantages that the magnetic stirrer can be used for extracting polysaccharides of multiple samples at the same time, and an operator can complete operation on each sample container at the same station when using the magnetic stirrer.

Description

Technical Field

[0001] The utility model relates to the technical field of laboratory equipment, in particular to a multi-position magnetic stirrer for extracting polysaccharides. Background Art

[0002] During the laboratory polysaccharide extraction process using water extraction and alcohol precipitation, a magnetic stirrer continuously stirs the polysaccharide. High-concentration ethanol is gradually added during this stirring process. The rate and amount of ethanol addition must be controlled based on the specific circumstances of the precipitation. If this is not done properly, other impurities such as proteins and starches will quickly precipitate and encapsulate the concentrate. As the number of ethanol layers increases, the concentrate inside cannot be dispersed, resulting in non-sugar precipitates and affecting the alcohol precipitation effect.

[0003] Currently, the most common multi-position magnetic stirrers have no interconnected stirring positions, requiring the operator to change their position to reach the appropriate stirring position. This requires constant picking up and putting down containers, which is very cumbersome and can easily cause confusion. When comparing multiple polysaccharide extraction samples, it is difficult to balance the different steps of alcohol precipitation and stirring for different samples. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a multi-position magnetic stirrer for extracting polysaccharides, which can simultaneously perform operations on multiple samples and different steps and can reduce the manual operation steps of the operator.

[0005] A multi-position magnetic stirrer for extracting polysaccharides includes a magnetic stirrer body, a rotating shaft and a multi-position turntable. The magnetic stirrer body is provided with several magnetic bases, the rotating shaft is arranged in the center of the magnetic stirrer body, and the several magnetic bases are arranged around the rotating shaft. A through hole is provided in the middle of the multi-position turntable, and the through hole is sleeved on the rotating shaft. The rotating shaft and the through hole cooperate to drive the multi-position turntable to rotate. The multi-position turntable is provided with several cavities for placing containers.

[0006] Furthermore, there are four magnetic bases and four cavities on the multi-position turntable.

[0007] Furthermore, a plurality of protrusions are provided on the surface of the rotating shaft, and a plurality of grooves matching with the protrusions are provided on the inner wall surface of the through hole.

[0008] Furthermore, a supporting plane is provided at the bottom of the boss.

[0009] Furthermore, a plurality of slots are provided on the inner wall surface of the cavity, positioning rubber strips are provided in the slots, and a return spring is provided between the positioning rubber strips and the slots.

[0010] Furthermore, a square hole is provided at the center of the rotating shaft, and a bracket is connected to the square hole.

[0011] Furthermore, a rubber boss is provided between two adjacent magnetic bases, and the height of the rubber boss is higher than the magnetic base.

[0012] Furthermore, the cavity is a vertically penetrating structure.

[0013] The utility model is beneficial in that:

[0014] 1. This magnetic stirrer can extract polysaccharides from multiple samples simultaneously. When using it, the operator can stay at the same station to complete the operation of each sample container.

[0015] 2. The magnetic stirrer can be used to perform different steps of polysaccharide extraction simultaneously, or the same step can be performed simultaneously, thereby increasing the efficiency of polysaccharide extraction.

[0016] 3. The multi-position turntable in this magnetic stirrer can be disassembled and can be used in the same way as a traditional magnetic stirrer after disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a multi-position magnetic stirrer for extracting polysaccharides according to the present invention.

[0018] Figure 2 This is a structural schematic diagram of a multi-position magnetic stirrer (excluding a multi-position turntable) for extracting polysaccharides according to the present invention.

[0019] Figure 3 This is a partial cross-sectional schematic diagram of a multi-position turntable in a multi-position magnetic stirrer for extracting polysaccharides according to the present invention.

[0020] Figure 4 The utility model is a cross-sectional schematic diagram of a rubber boss in a multi-position magnetic stirrer for extracting polysaccharides.

[0021] Reference numerals: magnetic stirrer body 1, multi-position turntable 2, bracket 3, positioning rubber strip 4, rotating shaft 5, boss 6, rubber boss 7, magnetic base 8, slot 9, return spring 10, through hole 11. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] A multi-position magnetic stirrer for extracting polysaccharides includes a magnetic stirrer body, a rotating shaft, and a multi-position turntable. The magnetic stirrer body is provided with several magnetic bases. The rotating shaft is arranged in the center of the magnetic stirrer body. Several magnetic bases are arranged around the rotating shaft. A through hole is provided in the middle of the multi-position turntable. The through hole is sleeved on the rotating shaft. The rotating shaft and the through hole cooperate to drive the multi-position turntable to rotate. The multi-position turntable is provided with several cavities for placing containers. There are four magnetic bases, and the number of cavities on the multi-position turntable is four. Several bosses are provided on the surface of the rotating shaft, and several grooves that cooperate with the bosses are provided on the inner wall surface of the through hole. A supporting plane is also provided at the bottom of the boss. Several slots are provided on the inner wall surface of the cavity, and positioning strips are provided in the slots. A reset spring is also provided between the positioning strips and the slots. A square hole is also provided in the center of the rotating shaft, and a bracket is connected to the square hole. A rubber boss is provided between two adjacent magnetic bases, and the height of the rubber boss is higher than the magnetic base. The cavity is a through structure from top to bottom.

[0024] The actual usage is as follows:

[0025] When used as a traditional magnetic stirrer, there is no need to install a multi-position turntable and it can be used directly.

[0026] The multi-position turntable is sleeved onto the shaft. The grooves in the through-holes of the multi-position turntable mate with the protrusions on the shaft surface, allowing the multi-position turntable to rotate when the shaft rotates. A motor is housed within the magnetic stirrer body, driving the shaft. Furthermore, the rotation of the shaft can be controlled from the operating surface of the magnetic stirrer body. Key control functions include selecting the operating position, rotating the multi-position turntable, and bringing the corresponding position to the operator's view. Furthermore, all or any of the four magnetic bases can be turned on or off. The stirring speed can also be controlled by adjusting the knob.

[0027] After the multi-position turntable is mounted on the shaft, the container for polysaccharide extraction can be placed in the cavity. The positioning rubber strips in the cavity can fix the container in any position. Usually, when stirring is required, the container is moved to the bottom so that the bottom of the container contacts the surface of the magnetic base. Then, when the multi-position turntable rotates, to prevent the bottom of the container from scratching the adjacent magnetic base, a rubber boss slightly higher than the height of the magnetic base is set between the two adjacent magnetic bases. When the multi-position turntable rotates, it drives the container to rotate. When the container rotates to the position of the rubber boss, it is slightly lifted, creating a certain height difference between it and the next magnetic base.

[0028] During the process of extracting polysaccharides by water extraction and alcohol precipitation, ethanol needs to be added gradually. The bracket can be inserted into the square hole as needed, and the funnel can be placed on the bracket to add ethanol gradually.

[0029] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A multi-position magnetic stirrer for extracting polysaccharides, characterized by: It includes a magnetic stirrer body, a rotating shaft and a multi-position turntable. The magnetic stirrer body is provided with several magnetic bases. The rotating shaft is arranged in the center of the magnetic stirrer body. Several magnetic bases are arranged around the rotating shaft. A through hole is provided in the middle of the multi-position turntable. The through hole is sleeved on the rotating shaft. The rotating shaft and the through hole cooperate to drive the multi-position turntable to rotate. The multi-position turntable is provided with several cavities for placing containers.

2. A multi-position magnetic stirrer for extracting polysaccharides according to claim 1, characterized in that: There are four magnetic bases and four cavities on the multi-position turntable.

3. A multi-position magnetic stirrer for extracting polysaccharides according to claim 2, characterized in that: The surface of the rotating shaft is provided with a plurality of convex columns, and the inner wall surface of the through hole is provided with a plurality of grooves matched with the convex columns.

4. A multi-position magnetic stirrer for extracting polysaccharides according to claim 3, characterized in that: A supporting plane is also provided at the bottom of the convex column.

5. A multi-position magnetic stirrer for extracting polysaccharides according to claim 4, characterized in that: A plurality of slots are provided on the inner wall surface of the cavity, positioning rubber strips are provided in the slots, and a reset spring is provided between the positioning rubber strips and the slots.

6. A multi-position magnetic stirrer for extracting polysaccharides according to claim 5, characterized in that: A square hole is also provided in the center of the rotating shaft, and a bracket is connected to the square hole.

7. A multi-position magnetic stirrer for extracting polysaccharides according to claim 6, characterized in that: A rubber boss is provided between two adjacent magnetic bases, and the height of the rubber boss is higher than the magnetic base.

8. The multi-position magnetic stirrer for extracting polysaccharides according to claim 7, characterized in that: The cavity is a vertical through structure.

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