Bacterial colony coating device

By designing a colony coating device, the problems of unevenness, cumbersomeness, and easy contamination of traditional coating methods have been solved, achieving efficient and uniform bacterial solution coating, adapting to various petri dish shapes, and improving the efficiency and accuracy of high-throughput experiments.

CN224077387UActive Publication Date: 2026-04-03SHANGHAI MANSON BIOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Traditional colony spreading methods suffer from uneven spreading, cumbersome operation, susceptibility to contamination, and poor adaptability, making them unsuitable for high-throughput experiments.

Method used

A colony coating device was designed, comprising a coating shaker body, a drive mechanism, and a shaking mechanism. Equipped with glass beads, it can achieve uniform shaking and fixation of multiple culture dishes, and is suitable for culture dishes of different shapes. The uniform movement of the coating platform is achieved through motor drive and eccentric hole structure.

Benefits of technology

It significantly improves the uniform distribution of bacterial suspension on the culture medium, reduces air bubbles and uncoated areas, improves experimental efficiency and result accuracy, and adapts to different experimental needs.

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Abstract

The utility model discloses a bacterial colony coating device which comprises a coating shaking table body, a main control device and a driving mechanism are arranged in the coating shaking table body, a coating platform is arranged at the output end of the driving mechanism, and a shaking mechanism is arranged between the coating platform and the coating shaking table body; a culture dish fixing mechanism is arranged on the top surface of the coating platform, and culture dishes in different shapes can be selectively placed on the culture dish fixing mechanism; a plurality of glass beads are arranged in the culture dish; according to the device, through the synergistic effect of the shaking mechanism and the driving mechanism, the coating platform can uniformly shake according to a set track; the glass beads are added into the culture dish, uniform distribution of the bacterial liquid is further promoted under the rolling action of the glass beads, bubbles and uncoated areas are reduced, and the coating quality is remarkably improved; the culture dish fixing mechanism can accommodate a plurality of culture dishes for coating at the same time, can be suitable for the culture dishes with different shapes and sizes, further improves the experiment efficiency, and is particularly suitable for high-throughput microbiological experiments.
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Description

Technical Field

[0001] This utility model relates to a colony coating device. Background Technology

[0002] In microbiology experiments, colony spreading is a fundamental and important technique used to evenly distribute microorganisms on the surface of a solid culture medium for subsequent isolation, culture, and counting.

[0003] Traditional colony spreading methods typically rely on manual operation, using a spreading stick to evenly spread the bacterial solution onto the surface of the culture medium; however, this method has the following problems:

[0004] Uneven coating: Manual operation makes it difficult to ensure that the bacterial solution is evenly distributed on the surface of the culture medium, resulting in uneven colony growth and affecting experimental results;

[0005] The operation is cumbersome: manual coating requires high operating skills and is time-consuming, making it difficult to meet the needs of high-throughput experiments.

[0006] Easy to contaminate: External contaminants can easily be introduced during the operation, affecting the accuracy of experimental results;

[0007] Poor adaptability: Traditional methods are difficult to adapt to different bacterial suspension viscosities, petri dish sizes and experimental requirements. Utility Model Content

[0008] The main objective of this invention is to provide a colony coating device to solve the aforementioned technical problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a colony coating device, comprising a coating shaker body, wherein a main control device and a drive mechanism are provided within the coating shaker body, a coating platform is provided at the output end of the drive mechanism, and a shaking mechanism is provided between the coating platform and the coating shaker body; a culture dish fixing mechanism is provided on the top surface of the coating platform, and culture dishes of different shapes can be selectively placed on the culture dish fixing mechanism; the culture dish contains a number of glass beads.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme: the driving mechanism includes a drive motor, the output end of the drive motor is provided with a first pulley, a second pulley is provided on one side of the first pulley, a transmission belt is provided between the first pulley and the second pulley, a rotating drum is provided on the top of the second pulley, a bearing is provided on the top of the rotating drum, a mounting plate is provided on the bearing, a rotating shaft is provided on the mounting plate, and a turntable is provided on the rotating shaft.

[0011] Based on the above scheme and as a preferred embodiment: the shaking mechanism includes sliding plates disposed on both sides of the top surface of the mounting plate, the sliding plates are provided with sliding rods, the sliding rods are slidably mounted with connecting blocks, the top of the connecting blocks is fixedly connected to the bottom of the coating platform; the turntable is provided with eccentric holes, the eccentric holes are installed with fastening bolts, one end of the fastening bolts is provided with circular sliders; the bottom of the coating platform is provided with a track groove, the circular sliders are slidably connected to the track grooves.

[0012] Based on the above scheme and as a preferred embodiment of the above scheme: the petri dish fixing mechanism includes a base plate, the base plate is provided with several supports, several petri dishes are stacked on the supports, the coating platform is provided with a placement groove, the base plate is placed in the placement groove, and quick clamps are provided on both sides of the placement groove.

[0013] Based on the above scheme and as a preferred embodiment of the above scheme: the coating shaker body is provided with a timer button, a speed adjustment button, a power button and an emergency stop button, and the timer button, speed adjustment button, power button and emergency stop button are electrically connected to the main control device.

[0014] The beneficial effects of this invention are as follows: Through the coordinated action of the shaking mechanism and the driving mechanism, the coating platform can be shaken evenly along a set trajectory; adding glass beads to the petri dish and utilizing their rolling action further promotes the uniform distribution of the bacterial solution, reduces the occurrence of air bubbles and uncoated areas, and significantly improves the coating quality; the petri dish fixing mechanism can accommodate multiple petri dishes for coating at the same time and is applicable to petri dishes of different shapes and sizes, further improving experimental efficiency, especially suitable for high-throughput microbial experiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the coating shaker body in Embodiment 1 of this utility model;

[0017] Figure 3 This is a side view of the coating shaker body in Embodiment 1 of this utility model;

[0018] Figure 4 This is a side perspective view of the coating shaker body in Embodiment 1 of this utility model;

[0019] Figure 5 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0021] Example 1

[0022] See attached diagram. Figures 1 to 4 The colony coating device in this embodiment includes a coating shaker body 1, which is equipped with a main control device and a drive mechanism. The output end of the drive mechanism is equipped with a coating platform 2, and a shaking mechanism is provided between the coating platform 2 and the coating shaker body 1. A culture dish fixing mechanism is provided on the top surface of the coating platform 2, and different shaped culture dishes can be selectively placed on the culture dish fixing mechanism. Several glass beads are placed inside the culture dish.

[0023] See attached image. Figure 1 In this embodiment, the culture dish is square in shape. In the culture dish fixing mechanism, a number of supports are provided on the base plate, and a number of square culture dishes 80 are stacked on the supports. The coating platform 2 is provided with a placement groove 21, and the base plate 82 is placed in the placement groove 21. Quick clamps 9 are provided on both sides of the placement groove 82. One of the supports is made of two vertical plates 8 spliced ​​at ninety degrees or integrally formed to fit the square culture dish 80. The bottom of the two vertical plates 8 is provided with a support seat 81 for supporting the square culture dish 80.

[0024] In this embodiment, the driving mechanism includes a drive motor 3, the output end of the drive motor 3 is provided with a first pulley 30, a second pulley 31 is provided on one side of the first pulley 30, a transmission belt 32 is provided between the first pulley 30 and the second pulley 31, a rotating drum 33 is provided on the top of the second pulley 32, a bearing 34 is provided on the top of the rotating drum 33, a mounting plate 4 is provided on the bearing 34, a rotating shaft is provided on the mounting plate 4, and a turntable 5 is provided on the rotating shaft;

[0025] Furthermore, the shaking mechanism includes slide plates 7 disposed on both sides of the top surface of the mounting plate 4, slide plates 7 are provided with slide rods 70, and connecting blocks 71 are slidably mounted on slide rods 70. The top of the connecting blocks 71 is fixedly connected to the bottom of the coating platform 2. The turntable 5 is provided with an eccentric hole, and a fastening bolt 6 is installed in the eccentric hole. One end of the fastening bolt 6 is provided with a circular slider 60. The bottom of the coating platform 2 is provided with a track groove 20, and the circular slider 60 is slidably connected to the track groove 20.

[0026] Working principle: The first pulley 30 is driven to rotate by the drive motor 3, which in turn drives the second pulley 31 to rotate. The second pulley 31 drives the bearing 34 on the rotating drum 33 to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft drives the turntable 5 to rotate. Since the turntable 5 has an eccentric hole, the circular slider 60 at one end of the fastening bolt 6 inside it can slide in the track groove 20. Furthermore, since there is a connecting block 71 and a sliding rod 70 between the coating platform 2 and the mounting plate 4, the coating platform 2 can shake under their synergistic action, thereby uniformly coating the petri dish.

[0027] Furthermore, the coating shaker body 1 is equipped with a timer button 10, a speed adjustment button 11, a power button 12, and an emergency stop button 13, which are electrically connected to the main control device. Users can quickly set the shaking parameters and coating time according to the viscosity of the bacterial solution and experimental requirements, making operation simple and convenient.

[0028] Example 2

[0029] See attached image. Figure 5 Unlike Embodiment 1, the culture dish in this embodiment is circular. In the culture dish fixing mechanism, a number of supports are provided on the base plate 82, and a number of circular culture dishes 84 are stacked on the supports. The coating platform 2 is provided with a placement groove 21, and the base plate 82 is placed in the placement groove 21. Quick clamps 9 are provided on both sides of the placement groove 21. Four cylindrical supports 83 form a limiting area, and there are at least four limiting areas on the base plate 82. A number of circular culture dishes 84 are stacked in each limiting area.

[0030] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A colony coating device, characterized in that: The device includes a coating shaker body, which contains a main control device and a drive mechanism. The output end of the drive mechanism is equipped with a coating platform, and a shaking mechanism is provided between the coating platform and the coating shaker body. A culture dish fixing mechanism is provided on the top surface of the coating platform, and different shaped culture dishes can be selectively placed on the culture dish fixing mechanism. The culture dish contains a number of glass beads.

2. The colony coating device according to claim 1, characterized in that: The driving mechanism includes a drive motor, the output end of which is provided with a first pulley, a second pulley is provided on one side of the first pulley, a transmission belt is provided between the first pulley and the second pulley, a rotating drum is provided on the top of the second pulley, a bearing is provided on the top of the rotating drum, a mounting plate is provided on the bearing, a rotating shaft is provided on the mounting plate, and a turntable is provided on the rotating shaft.

3. The colony coating device according to claim 2, characterized in that: The shaking mechanism includes sliding plates on both sides of the top surface of the mounting plate, sliding rods on the sliding plates, connecting blocks slidably mounted on the sliding rods, and the top of the connecting blocks being fixedly connected to the bottom of the coating platform; the turntable has an eccentric hole, a fastening bolt is installed in the eccentric hole, and a circular slider is provided at one end of the fastening bolt; the bottom of the coating platform has a track groove, and the circular slider is slidably connected to the track groove.

4. The colony coating device according to claim 3, characterized in that: The petri dish fixing mechanism includes a base plate, a plurality of supports on the base plate, a plurality of petri dishes stacked on the supports, a placement groove on the coating platform, the base plate being placed in the placement groove, and quick clamps on both sides of the placement groove.

5. The colony coating device according to claim 4, characterized in that: The coating shaker body is equipped with a timer button, a speed adjustment button, a power button, and an emergency stop button, which are electrically connected to the main control device.