Bacteria culture medium stirring device
By employing a rotating design with spiral blades and interlocking flat teeth, along with the use of a temperature-controlled heater, the problems of stratification and uneven temperature of the culture medium within the petri dish are solved, ensuring uniform mixing and suitable temperature of the bacterial culture medium.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI HANNI BIOLOGICAL CELL TECH CO LTD
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Existing bacterial culture medium stirring devices are ineffective in preventing the formation of obvious stratification and uneven temperature in the culture medium within the petri dish.
It adopts a structural design with spiral blades, meshing flat teeth, slow motor, belt heater and temperature controller. Through slow rotation and temperature control heating, it avoids culture medium precipitation and maintains a suitable temperature environment.
It achieves uniform distribution of the culture medium and temperature control within the petri dish, avoiding problems of stratification and uneven temperature, and providing a suitable growth environment.
Smart Images

Figure CN224113779U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bacterial culture technology, specifically a bacterial culture medium stirring device. Background Technology
[0002] Existing bacterial culture media are nutrient substrates specifically designed to promote bacterial growth and reproduction. They are carefully formulated with a variety of nutrients to simulate the nutritional conditions required by bacteria in their natural environment. They can provide a uniform nutrient environment for bacteria, promoting uniform distribution and rapid growth of bacteria in the liquid. During the cultivation process, multiple nutrients need to be mixed, stirred, and heated. Stirring is mainly aimed at addressing the problem that bacterial culture media will precipitate and form obvious stratification. Uniform heating can provide the most suitable temperature environment for bacterial growth. Therefore, a bacterial culture media stirring device that solves the above problems is needed. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a bacterial culture medium stirring device, which solves the problems mentioned in the background.
[0004] This utility model provides the following technical solution: a bacterial culture medium stirring device, comprising: a base, the inner cavity of which has a loading cavity, a platform on the top of the base, a slow-speed motor installed in the inner cavity of the base, a meshing flat tooth connected to the outer wall of the slow-speed motor, a rubber gasket placed on the top of the platform, a rotating column sleeved on the outer wall of the meshing flat tooth, a meshing groove on the inner wall of the rotating column, a spiral blade connected to the outer wall of the rotating column, a smooth head on the top of the rotating column, a culture dish placed on the top of the platform, an external thread on the outer wall of the culture dish, a belt heater sleeved on the outer wall of the culture dish, a Velcro fastener on the outer wall of the belt heater, a temperature controller installed on the outer wall of the belt heater, and a top cover on the top of the culture dish.
[0005] Preferably, the inner wall size of the loading cavity is adapted to the outer wall size of the slow motor, and the slow motor is installed in the loading cavity.
[0006] Preferably, the power output shaft of the slow motor is connected to a rotating rod, and the outer wall of the rotating rod is symmetrically provided with meshing flat teeth.
[0007] Preferably, the meshing flat teeth are disposed in the inner cavity of the platform, and the height of the meshing flat teeth is slightly higher than that of the platform.
[0008] Preferably, the entire spiral blade is disposed within the inner cavity of the culture dish, and the spiral blade adopts a design that is narrower at the top and wider at the bottom.
[0009] Preferably, a temperature controller is provided in the middle section of the belt heater, and Velcro is provided at both ends of the belt heater.
[0010] Preferably, the outer wall of the base is movably fitted with a cover, and the outer wall of the cover is fitted with a heat insulation layer.
[0011] Preferably, the heat insulation layer is made of aluminum foil composite film, and the heat insulation layer is completely attached to the outer wall of the cover.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This bacterial culture medium stirring device, by setting up a spiral blade, a culture dish, meshing flat teeth, a slow motor, etc., allows the slow motor to output slow rotational power when the bacterial culture medium is stored in the inner cavity of the culture dish, and the meshing flat teeth to engage the rotating column, so that the rotating column on the device drives the spiral blade to rotate slowly in the inner cavity of the culture dish. In this way, the bacterial culture medium at the bottom of the inner cavity of the culture dish will not settle and form obvious stratification during the rotation process.
[0014] 2. This bacterial culture medium stirring device, by setting up a belt heater, temperature controller, heat insulation layer, and sealing cover, allows the bacterial culture medium to be cultured in the inner cavity of the culture dish. First, the temperature controller controls the temperature output of the belt heater, and the belt heater is used to heat the culture dish. After the belt heater is started, the sealing cover seals all the structures based on the base in the inner cavity. The heat insulation layer isolates the temperature inside and outside the sealing cover from the outside temperature, thereby preventing the external temperature difference from affecting the bacterial culture medium in the inner cavity of the culture dish. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the belt heater structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the meshing flat tooth structure of this utility model.
[0019] In the diagram: 1. Base; 2. Loading cavity; 3. Placement platform; 4. Slow-speed motor; 5. Meshing flat teeth; 6. Rubber gasket; 7. Rotating column; 8. Meshing groove; 9. Spiral blade; 10. Smooth head; 11. Petri dish; 12. External thread; 13. Belt heater; 14. Velcro; 15. Temperature controller; 16. Top cover; 17. Sealing cover; 18. Insulation layer. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-4 A bacterial culture medium stirring device includes: a base 1, a loading cavity 2 in the inner cavity of the base 1, a platform 3 on the top of the base 1, a slow motor 4 installed in the inner cavity of the base 1, meshing flat teeth 5 connected to the outer wall of the slow motor 4, a rubber gasket 6 placed on the top of the platform 3, a rotating column 7 sleeved on the outer wall of the meshing flat teeth 5, a meshing groove 8 in the inner wall of the rotating column 7, a spiral blade 9 connected to the outer wall of the rotating column 7, a smooth head 10 on the top of the rotating column 7, a culture dish 11 placed on the top of the platform 3, an external thread 12 on the outer wall of the culture dish 11, a belt heater 13 sleeved on the outer wall of the culture dish 11, a Velcro fastener 14 on the outer wall of the belt heater 13, a temperature controller 15 installed on the outer wall of the belt heater 13, and a top cover 16 on the top of the culture dish 11.
[0022] The inner wall size of the loading cavity 2 is adapted to the outer wall size of the slow motor 4, and the slow motor 4 is installed in the loading cavity 2. By installing the slow motor 4 in the loading cavity 2, the slow motor 4 itself is a low-power micro motor, and the slow motor 4 is completely hidden in the inner cavity of the loading cavity 2, so that the slow motor 4 is not in contact with the outside world.
[0023] The slow motor 4 has a power output shaft connected to a rotating rod, and the outer wall of the rotating rod is symmetrically provided with meshing flat teeth 5. When the power output of the slow motor 4 on the device is rotated, the slow motor 4 uses the rotating rod to control the meshing flat teeth 5 to rotate, and uses the meshing flat teeth 5 to mesh with the bottom of the rotating column 7, so that the rotating column 7 on the device rotates synchronously.
[0024] The meshing flat teeth 5 are located in the inner cavity of the platform 3, and the height of the meshing flat teeth 5 is slightly higher than that of the platform 3. Because the height of the meshing flat teeth 5 on the device is slightly higher than that of the platform 3, the meshing flat teeth 5 on the device protrudes from the platform 3. A rubber gasket 6 is placed on the outer wall of the meshing flat teeth 5, and the rubber gasket 6 is used to increase the sealing of the interface between the meshing flat teeth 5 and the rotating column 7. Thus, after the meshing flat teeth 5 on the device are connected to the rotating column 7, there is no need to worry about sealing problems in the contact area.
[0025] The spiral blade 9 is entirely housed within the inner cavity of the culture dish 11. The spiral blade 9 has a design that is narrower at the top and wider at the bottom. By placing the entire spiral blade 9 within the inner cavity of the culture dish 11, when the rotating column 7 is driven to rotate by the meshing flat teeth 5, the spiral blade 9 on the outer wall of the rotating column 7 rotates within the inner cavity of the culture dish 11. The spiral shape of the spiral blade 9 gradually flips the bacterial culture medium deposited at the bottom of the culture dish 11 upwards, thus preventing the bacterial culture medium in the inner cavity of the culture dish 11 from settling and forming obvious stratification.
[0026] The belt heater 13 has a temperature controller 15 in the middle section and Velcro 14 at both ends. The temperature controller 15 in the middle section allows the belt heater 13 to be fitted onto the outer wall of the culture dish 11. The belt heater 13 on both sides of the temperature controller 15 forms a ring around the outer wall of the culture dish 11, and the Velcro 14 at both ends secures it. This allows the belt heater 13 to fit snugly against the outer wall of the culture dish 11 for heating, maintaining the temperature inside the culture dish 11 at 20℃-40℃, a suitable temperature for bacterial culture.
[0027] Among them, the outer wall of the base 1 is movably fitted with a cover 17, and the outer wall of the cover 17 is fitted with a heat insulation layer 18. By using the cover 17 to movably fit the outer wall of the base 1 on the device, after the belt heater 13 on the device enters the heating operation, in order to avoid the influence of the external temperature on the internal temperature of the culture dish 11 and the output power of the belt heater 13, the cover 17 is used to fasten all the structures based on the base 1 in the inner cavity.
[0028] The heat insulation layer 18 is made of aluminum foil composite film and is completely attached to the outer wall of the cover 17. The aluminum foil composite film used in the heat insulation layer 18 gives it the characteristics of heat insulation, waterproofing and moisture resistance. By completely attaching the heat insulation layer 18 to the cover 17, the heat insulation layer 18 isolates the temperature of the inner and outer sides of the cover 17 from each other, so that the outside does not affect the inside of the cover 17.
[0029] The working principle involves first setting up a spiral blade 9, a culture dish 11, meshing flat teeth 5, and a slow-speed motor 4. When bacterial culture medium is stored in the inner cavity of the culture dish 11, the slow-speed motor 4 outputs a slow rotational force, and the meshing flat teeth 5 engage the rotating column 7. This causes the rotating column 7 to drive the spiral blade 9 to rotate slowly within the inner cavity of the culture dish 11. This prevents the bacterial culture medium at the bottom of the inner cavity of the culture dish 11 from settling and forming obvious stratification. Then, a belt heater 13 and a temperature controller are added. The structure including the heat insulation layer 18, the cover 17, etc., allows the temperature output of the belt heater 13 to be controlled by the temperature controller 15 when the bacterial culture medium is cultured in the inner cavity of the culture dish 11. The belt heater 13 is then used to heat the culture dish 11. After the belt heater 13 is started, the cover 17 seals all the structures based on the base 1 in the inner cavity. The heat insulation layer 18 is used to isolate the temperature inside and outside the cover 17 from the outside of the cover 17, thereby preventing the external temperature difference from affecting the bacterial culture medium in the inner cavity of the culture dish 11.
[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A bacterial culture medium stirring device, characterized in that, include: A base (1) has a loading cavity (2) inside its interior. A platform (3) is provided on the top of the base (1). A slow motor (4) is installed inside the base (1). The outer wall of the slow motor (4) is connected to a meshing flat tooth (5). A rubber gasket (6) is placed on the top of the platform (3). A rotating column (7) is sleeved on the outer wall of the meshing flat tooth (5). A meshing groove (8) is provided on the inner wall of the rotating column (7). The outer wall of the rotating column (7) is connected to... It has a spiral blade (9), a smooth head (10) on the top of the rotating column (7), a petri dish (11) on the top of the platform (3), an external thread (12) on the outer wall of the petri dish (11), a belt heater (13) sleeved on the outer wall of the petri dish (11), a Velcro (14) on the outer wall of the belt heater (13), a temperature controller (15) installed on the outer wall of the belt heater (13), and a top cover (16) on the top of the petri dish (11).
2. The bacterial culture medium stirring device according to claim 1, characterized in that, The inner wall size of the loading cavity (2) is adapted to the outer wall size of the slow motor (4), and the slow motor (4) is installed in the loading cavity (2).
3. The bacterial culture medium stirring device according to claim 1, characterized in that, The power output shaft of the slow motor (4) is connected to a rotating rod, and the outer wall of the rotating rod is symmetrically provided with meshing flat teeth (5).
4. The bacterial culture medium stirring device according to claim 1, characterized in that, The meshing flat teeth (5) are disposed in the inner cavity of the platform (3), and the height of the meshing flat teeth (5) is slightly higher than that of the platform (3).
5. The bacterial culture medium stirring device according to claim 1, characterized in that, The entire spiral blade (9) is disposed in the inner cavity of the culture dish (11), and the spiral blade (9) adopts a design that is narrow at the top and wide at the bottom.
6. The bacterial culture medium stirring device according to claim 1, characterized in that, A temperature controller (15) is provided in the middle section of the belt heater (13), and Velcro (14) is provided at both ends of the belt heater (13).
7. The bacterial culture medium stirring device according to claim 1, characterized in that, The outer wall of the base (1) is movably fitted with a cover (17), and the outer wall of the cover (17) is fitted with a heat insulation layer (18).
8. The bacterial culture medium stirring device according to claim 7, characterized in that, The heat insulation layer (18) is made of aluminum foil composite film and is completely attached to the outer wall of the cover (17).