Spiral flow guide type mixing and stirring device based on culture medium preparation

Abstract

The utility model discloses a spiral flow guide type mixing and stirring device based on culture medium preparation, and relates to the field of culture medium preparation. A driving mechanism is arranged above the culture medium preparation tank, a driving position of the driving mechanism and a stirring paddle in the culture medium preparation tank rotate around the interior of the culture medium preparation tank while rotating, the stirring paddle is spiral, and a plurality of flow guide holes are formed in the surface of a paddle blade of the stirring paddle; the device has the effects that the driving mechanism synchronously drives the stirring paddle to rotate and revolve around the central shaft of the culture medium preparation tank, when the spiral paddle rotates, the spiral curved surface pushes the culture medium to generate axial and radial composite flow, and the flow guide holes in the surface of the paddle are matched, so that the medium flowing at a high speed forms jet flow disturbance through the holes; a vertical circulating three-dimensional flow field is constructed in the tank body, meanwhile, revolution motion drives the stirring paddle to move in the radius direction of the tank body, and the disturbance range is enlarged.

Description

Spiral-guided mixing device based on culture medium preparation Technical Field

[0001] This invention relates to the field of culture medium preparation, and more specifically, to a spiral-guided mixing and stirring device based on culture medium preparation. Background Technology

[0002] In the process of culture medium preparation, the mixing and stirring device is the key equipment to achieve uniform dispersion of multiple components. Its stirring efficiency and mixing quality directly affect the preparation effect of the culture medium.

[0003] However, in the process of culture medium preparation, the blades of traditional stirring devices mostly adopt a planar or simple inclined structure, which can only generate a single radial flow during stirring. Moreover, the transmission structure usually only drives the stirring blade to rotate unidirectionally around the central axis, lacking multi-dimensional spatial motion capability, making it difficult for the medium to form a three-dimensional circulating flow field. This single motion mode not only results in low mixing uniformity and insufficient stirring efficiency, but also makes it easy for culture media containing multiple components and viscosity differences to have problems such as local component agglomeration and insufficient shear dispersion. In addition, the existing transmission structure cannot realize multi-directional movement of the stirring blade, so that the disturbance of the culture medium by the blade is limited to a fixed radius range. The material in the edge and bottom areas of the tank is difficult to be effectively moved, further aggravating the mixing dead zone and concentration gradient differences. Especially when dealing with complex systems where high viscosity components and low viscosity components coexist, traditional devices, due to their single flow field and fixed motion trajectory, cannot achieve turbulent mixing and shear dispersion of media with different viscosities through multi-directional disturbance, which seriously affects the quality of culture medium preparation and production efficiency.

[0004] Therefore, in order to solve the above-mentioned technical problems, this application proposes a spiral flow mixing and stirring device based on culture medium preparation. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a spiral flow mixing and stirring device based on culture medium preparation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a spiral flow-guided mixing and stirring device based on culture medium preparation, comprising a culture medium preparation tank, wherein a driving position and a driving mechanism are installed above the culture medium preparation tank, which rotates and rotates around the inside of the culture medium preparation tank while also rotating on its own axis.

[0007] The stirring paddle is spiral-shaped, and its blade surface has multiple flow guide holes.

[0008] Preferably, the driving mechanism includes a top plate that is fixedly supported and connected to the culture medium preparation tank. The two sides of the top plate are connected to an annular toothed plate with teeth set on its inner sidewall via L-shaped plates. A motor is installed at the middle part of the bottom end of the top plate. A rotating plate is fixedly connected to the transmission shaft of the motor. A gear that meshes with the teeth on the annular toothed plate is rotatably connected to the bottom end of the rotating plate. The stirring paddle is fixed at the center of the bottom end of the gear.

[0009] Preferably, a bearing is fixedly connected to the bottom end of the rotating plate, a rotating rod is fixedly connected to the inner ring of the bearing, and the gear is fixed to the bottom end of the rotating rod.

[0010] Preferably, the bottom of the culture medium preparation tank is provided with a discharge pipe equipped with a valve.

[0011] Preferably, the bottom of the culture medium preparation tank is fixedly connected to two support columns, and the bottom of the support columns is fixedly connected to a base.

[0012] Preferably, the inner bottom wall of the culture medium preparation tank is provided with multiple vertical rods surrounding the discharge pipe, and the head of the vertical rods is fixedly connected to a central blocking column.

[0013] Preferably, the support rod is detachably connected to the culture medium preparation tank by screws.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model uses a drive mechanism to synchronously drive the stirring paddle to rotate and revolve around the central axis of the culture medium preparation tank, forming a multi-dimensional spatial motion trajectory. This breaks through the limitation of the single radial flow of traditional devices. When the helical blade rotates, its helical surface pushes the culture medium to generate axial and radial composite flow. With the flow guide holes on the blade surface, the high-speed flowing medium forms jet disturbance through the holes, creating a three-dimensional flow field that circulates up and down in the tank. At the same time, the revolving motion drives the stirring paddle to move along the radius of the tank, expanding the disturbance range and effectively covering the edge and bottom areas of the tank, eliminating mixing dead zones, and solving the problem of insufficient local mixing caused by the single flow field and fixed motion trajectory of traditional devices.

[0016] 2. The screw connection method of this utility model allows the drive mechanism to be connected to the stirring paddle and can be quickly disassembled from the mixing device by removing and installing screws, which facilitates the inspection and replacement of the stirring paddle and drive mechanism during use, and avoids the disadvantage of traditional fixed connection where the whole part needs to be replaced when the component is damaged.

[0017] 3. This utility model uses a central blocking column to prevent material retention in the central area, forcing the raw materials to diffuse towards the edge of the culture medium preparation tank and enter the strong shearing range of the stirring paddle, thereby improving mixing efficiency. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 is a schematic diagram of the specific structure of the present invention from another angle, as shown in Figure 1.

[0021] Figure 3 is a schematic diagram of the specific structure of this utility model after the tank wall is removed;

[0022] Figure 4 is a schematic diagram of the specific structure of the drive mechanism in this utility model;

[0023] Figure 5 is an enlarged view of part A of the structure in Figure 4 of this utility model.

[0024] In the diagram: 1. Culture medium preparation tank; 2. Stirring paddle; 201. Flow guide hole; 3. Drive mechanism; 301. Support rod; 302. Top plate; 303. L-shaped plate; 304. Annular toothed plate; 3041. Tooth; 305. Motor; 306. Rotating plate; 307. Gear; 308. Bearing; 309. Rotating rod; 4. Discharge pipe; 5. Support column; 6. Base; 7. Vertical rod; 8. Central blocking column. Detailed Implementation

[0025] As shown in Figures 1-5, this utility model provides a spiral flow-guided mixing and stirring device based on culture medium preparation, including a culture medium preparation tank 1, and a drive mechanism 3 installed above the culture medium preparation tank 1, which rotates and spins around the inside of the culture medium preparation tank 1 while the stirring paddle 2 inside the culture medium preparation tank 1 is mounted on the drive position.

[0026] The stirring paddle 2 is spiral-shaped, and its blade surface has multiple guide holes 201.

[0027] In use, various raw materials (such as nutrients, additives, solvents, etc.) for preparing the culture medium are first added to the culture medium preparation tank 1. The driving mechanism 3 synchronously drives the stirring paddle 2 to rotate and revolve around the central axis of the culture medium preparation tank 1, forming a multi-dimensional spatial motion trajectory, breaking through the limitation of the single radial flow of traditional devices. When the helical blade rotates, its helical surface pushes the culture medium to generate axial and radial composite flow. With the flow guide holes 201 on the surface of the blade, the high-speed flowing medium forms jet disturbance through the holes, creating a three-dimensional flow field with vertical circulation in the tank. At the same time, the revolution motion drives the stirring paddle 2 to move along the radius of the tank, expanding the disturbance range and effectively covering the edge and bottom areas of the tank, eliminating mixing dead zones. When processing culture media containing multiple components and viscosity differences, the shearing effect of the helical structure combined with the turbulence effect of the flow guide holes 201 promotes the continuous collision and dispersion of high viscosity components and low viscosity components in the three-dimensional flow field. The multi-directional moving transmission structure further enhances the convective mixing of media in different areas, thereby significantly improving the mixing uniformity and stirring efficiency.

[0028] The following is the specific structure of the drive mechanism 3: The drive mechanism 3 includes a top plate 302 that is connected to the culture medium preparation tank 1 by a fixed support rod 301. The two sides of the top plate 302 are connected to the annular toothed plate 304 on its inner sidewall by L-shaped plates 303. A motor 305 is installed in the middle of the bottom end of the top plate 302. A rotating plate 306 is fixedly connected to the transmission shaft of the motor 305. A gear 307 that meshes with the teeth 3041 on the annular toothed plate 304 is rotatably connected to the bottom end of the rotating plate 306. The stirring paddle 2 is fixed at the center of the bottom end of the gear 307.

[0029] After the motor 305 starts, it drives the rotating plate 306 to rotate via the transmission shaft (the motor 305 is a bidirectional motor and can rotate forward or backward). The gear 307 at the bottom of the rotating plate 306 meshes with the teeth 3041 on the inner side of the annular toothed plate 304. While revolving around the central axis of the tank with the rotating plate 306, the gear 307 is forced to rotate on its own axis due to the meshing action of the teeth 3041 (at this time, the gear 307 rotates relative to the rotating plate 306), forming a compound motion mode of "revolution + rotation". Specifically, the fixed support rod 301 and the L-shaped plate 303 fix the annular toothed plate 304 to both sides of the top plate 302, so that the revolution trajectory of the gear 307 always follows the annular path of the cross-section of the tank, and the rotational power of the gear 307 comes directly from the rotational driving force of the rotating plate 306 and the reaction force generated by the meshing of the teeth 3041. This composite motion is transformed into multi-dimensional motion of the stirring paddle 2 fixed at the bottom center of gear 307 within the culture medium preparation tank 1—it revolves around the central axis of the tank and rotates on its own axis, thereby achieving the driving effect of "rotating and self-rotating simultaneously" in the technical solution, providing a power basis for the spiral stirring paddle 2 to construct a three-dimensional flow field and expand the range of medium disturbance.

[0030] The bottom end of the rotating plate 306 is fixedly connected to a bearing 308, and a rotating rod 309 is fixedly connected to the inner ring of the bearing 308. The gear 307 is fixed to the bottom end of the rotating rod 309. That is, when the gear 307 is rotated by the teeth 3041 on the ring gear plate 304, the gear 307 will drive the rotating rod 309 to rotate. The rotating rod 309 rotates along the inner ring of the bearing 308, and the inner ring of the bearing 308 rotates along its outer ring (the outer ring of the bearing 308 is fixed to the rotating plate 306), thereby realizing the rotational connection between the gear 307 and the rotating plate 306.

[0031] Furthermore, the support rod 301 is detachably connected to the culture medium preparation tank 1 by screws. The screw connection allows the drive mechanism 3 to be quickly disassembled from the mixing device by removing and installing the screws, which facilitates the inspection and replacement of the mixing paddle 2 and the drive mechanism 3 during use. This avoids the disadvantage of traditional fixed connections where the entire component needs to be replaced when it is damaged, thus reducing maintenance costs and downtime.

[0032] This utility model also has support columns 5 fixedly connected to both sides of the bottom of the culture medium preparation tank 1, and a base 6 fixedly connected to the bottom of the support column 5. The culture medium preparation tank 1 is supported to a certain height by the support columns 5, so that the discharge pipe 4 equipped with a valve can be set below it. The staff can place the collection container directly below the discharge pipe 4 and above the base 6 to collect and mix the culture medium product after it is evenly mixed.

[0033] Furthermore, this invention also includes multiple vertical rods 7 arranged around the discharge pipe 4 on the inner bottom wall of the culture medium preparation tank 1, with a central blocking column 8 fixedly connected to the head of each vertical rod 7. The vertical rods 7 are used to support the central blocking column 8 to a certain height. The space between the vertical rods 7 will not affect the normal discharge of the discharge pipe 4. When the stirring paddle 2 rotates, the material at the edge of the tank moves outward due to centrifugal force, while a low-speed vortex zone may be formed in the central area, causing nutrient accumulation and affecting the uniformity of mixing. The central blocking column 8 forces the raw materials to diffuse towards the edge of the culture medium preparation tank 1 by blocking the material retention in the central area, and enters the strong shearing range of the stirring paddle 2, thereby improving the mixing efficiency.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or equivalent variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are considered equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A spiral-guided mixing and stirring device for culture medium preparation, comprising a culture medium preparation tank (1), characterized in that: Above the culture medium preparation tank (1) is a drive mechanism (3) that drives the stirring paddle (2) located inside the culture medium preparation tank (1) to rotate around the inside of the culture medium preparation tank (1) while rotating on its own axis; the stirring paddle (2) is spiral-shaped and has multiple guide holes (201) on its blade surface.

2. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 1, characterized in that: The driving mechanism (3) includes a top plate (302) that is connected to a fixed support rod (301) and a culture medium preparation tank (1). The two sides of the top plate (302) are connected to an annular toothed plate (304) with teeth (3041) set on its inner sidewall through L-shaped plates (303). A motor (305) is installed in the middle part of the bottom end of the top plate (302). A rotating plate (306) is fixedly connected to the transmission shaft of the motor (305). A gear (307) that meshes with the teeth (3041) on the annular toothed plate (304) is rotatably connected to the bottom end of the rotating plate (306). The stirring paddle (2) is fixed at the center of the bottom end of the gear (307).

3. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 2, characterized in that: The bottom end of the rotating plate (306) is fixedly connected to a bearing (308), and a rotating rod (309) is fixedly connected to the inner ring of the bearing (308). The gear (307) is fixed to the bottom end of the rotating rod (309).

4. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 1, characterized in that: The bottom of the culture medium preparation tank (1) is fixedly connected to two support columns (5), and the bottom of the support column (5) is fixedly connected to a base (6).

5. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 1, characterized in that: The culture medium preparation tank (1) has a discharge pipe (4) equipped with a valve at its bottom.

6. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 1, characterized in that: The inner bottom wall of the culture medium preparation tank (1) is surrounded by multiple vertical rods (7) around the discharge pipe (4), and the head of the vertical rods (7) is fixedly connected to a central blocking column (8).

7. The spiral-guided mixing and stirring device based on culture medium preparation according to claim 2, characterized in that: The support rod (301) is detachably connected to the culture medium preparation tank (1) by screws.

Images