A petri dish

Abstract

This utility model discloses a culture dish, comprising a cylindrical culture dish body with an inner cavity. At least two upwardly extending L-shaped protrusions are provided on the upper part of the outer side wall of the culture dish body, with the upper ends of the L-shaped protrusions exceeding the top surface of the culture dish body. At least two L-shaped grooves are provided on the lower part of the outer side wall of the culture dish body, with the lower openings of the L-shaped grooves located on the bottom surface of the culture dish body. The L-shaped protrusions of the lower culture dish body and the L-shaped grooves of the upper culture dish body are rotatably engaged. The culture dish provided by this utility model allows for the rapid stacking and locking of multiple culture dishes, facilitating the simultaneous handling and operation of multiple culture dishes.

Description

Technical Field

[0001] This utility model relates to the field of fungal culture, and in particular to a petri dish. Background Technology

[0002] In bacterial culture and microbiological experiments, petri dishes are frequently used. After the bacterial culture is placed in the petri dish, it needs to be stored in an incubator at a set temperature and humidity to cultivate the culture. When moving petri dishes, because of their small capacity, flat shape, and light weight, moving a single petri dish by hand can easily cause it to tip over due to hand shaking. While stacking multiple petri dishes for simultaneous transport increases the overall weight and reduces the likelihood of shaking, it requires trays or clamps, resulting in more tools being used. Furthermore, stacked petri dishes are prone to relative sliding or misalignment, which can cause them to tip over and pose a risk of contamination.

[0003] When petri dishes are placed on a countertop, their smooth bottoms can easily cause them to slide relative to the countertop, especially near the edge, posing a risk of slipping.

[0004] Colony counting is a fundamental and crucial experimental procedure, and its accuracy directly impacts the reliability of subsequent data analysis and conclusions. Traditional plate colony counting methods have certain limitations in practice. On the one hand, when colonies are unevenly distributed, researchers are prone to visual fatigue during counting, leading to missed counts, overcounts, or counting errors. On the other hand, for petri dishes with a large number of colonies, direct counting is not only time-consuming and labor-intensive but may also result in counting errors due to densely packed areas that are difficult to distinguish. Furthermore, in multi-group comparative experiments or simultaneous analysis of different samples, the lack of effective partitioning markers can easily lead to sample confusion, affecting the accuracy and reproducibility of experimental results. In addition, experiments often require the simultaneous use of multiple petri dishes, each potentially representing different samples or experimental conditions. Traditional petri dishes rely solely on simple markings, which are prone to blurry, worn, or limited marking information, leading to sample confusion and affecting the accuracy and traceability of experimental results. Utility Model Content

[0005] The purpose of this invention is to provide a petri dish that can be quickly stacked and locked, facilitating the simultaneous handling of multiple petri dishes.

[0006] To achieve the above objectives, this utility model provides a petri dish, comprising a cylindrical petri dish body with an inner cavity. The upper part of the outer side wall of the petri dish body is provided with at least two upwardly extending L-shaped protrusions, the upper ends of which are higher than the top surface of the petri dish body. The lower part of the outer side wall of the petri dish body is provided with at least two L-shaped grooves, the lower openings of which are located on the bottom surface of the petri dish body. The L-shaped protrusions of the lower petri dish body are rotatably engaged with the L-shaped grooves of the upper petri dish body.

[0007] As a further improvement of this utility model, the L-shaped protrusion includes a vertical rod and a protrusion. The lower end of the vertical rod is connected to the upper part of the outer side wall of the culture dish body, and the protrusion is disposed on the inner side of the upper end of the vertical rod. The L-shaped groove includes a vertical groove and a horizontal groove, both of which are disposed on the outer side wall of the culture dish body. The opening at the lower end of the vertical groove is located on the bottom surface of the culture dish body, and the upper end of the vertical groove is connected to one end of the horizontal groove. The protrusion slides vertically and vertically with the vertical groove, and slides horizontally with the horizontal groove.

[0008] As a further improvement of this utility model, a limiting protrusion is provided at the edge of the connection between the vertical groove and the horizontal groove.

[0009] As a further improvement of this utility model, a first magnetic element is provided inside the protrusion, and a second magnetic element is embedded in the main body of the culture dish at a position adjacent to the transverse groove, and the first magnetic element and the second magnetic element are magnetically attracted to each other.

[0010] As a further improvement of this utility model, the bottom surface of the petri dish body is provided with an anti-slip layer; the anti-slip layer is made of honeycomb silicone material.

[0011] As a further improvement of this utility model, the main body of the petri dish is made of transparent material, and grid lines are provided on the bottom surface of the main body of the petri dish.

[0012] As a further improvement of this utility model, a label protective cover is connected to the outer wall of the petri dish body, and a label insertion interface is provided on one side edge of the label protective cover. The label protective cover is made of transparent material.

[0013] As a further improvement of this utility model, the top opening of the inner cavity of the culture dish body is provided with a lid that fits therein, and the outer wall of the lid is connected to the inner wall of the inner cavity opening of the culture dish body by a thread.

[0014] Beneficial effects

[0015] Compared with the prior art, the advantages of the petri dish of this invention are:

[0016] 1. When multiple culture dishes need to be moved simultaneously, they can be stacked vertically. Adjacent culture dishes are connected by L-shaped protrusions and L-shaped grooves that rotate and lock together. The multiple stacked culture dishes form a single unit with moderate weight, reducing the likelihood of hand tremors during handling and minimizing the chance of the dishes shaking and tipping over. Adjacent culture dishes can be connected through their own structure, eliminating the need for trays or clamps and reducing the number of tools required.

[0017] 2. In the L-shaped groove, there is a limiting protrusion at the edge of the connection between the vertical groove and the horizontal groove. When the protrusion of the L-shaped protrusion rotates into the horizontal groove, one side of the protrusion is blocked by the limiting protrusion, making it difficult to fall out and avoiding accidental loosening, thus improving the connection stability.

[0018] 3. The L-shaped protrusion has a first magnetic component inside the protrusion, which can magnetically engage with the second magnetic component located on the main body of the culture dish and adjacent to the horizontal groove. After the L-shaped protrusion and the L-shaped groove are rotated and engaged, they are less likely to loosen when transporting multiple culture dishes stacked on top of each other, and the connection stability is higher.

[0019] 4. The anti-slip layer on the bottom of the petri dish can improve the anti-slip performance when the petri dish is placed on the table.

[0020] 5. By setting up a grid, researchers can independently count colonies in each region and then estimate the overall colony count by calculating the average or sum. This method avoids counting bias caused by uneven colony distribution (such as localized high density or low density), and is especially suitable for samples with uneven colony growth. This approach improves the accuracy and efficiency of counting while simplifying the experimental procedure and reducing reliance on the researcher's experience.

[0021] 6. The label corresponding to the petri dish can be inserted into the label protective cover through the label insertion interface. The label will not be worn during use, ensuring the integrity of the label information.

[0022] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. 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 only 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 This is a schematic diagram of the rotation and snap-fit ​​operation of two adjacent culture dishes in Example 1;

[0025] Figure 2 This is a front sectional view of a single culture dish in Example 1;

[0026] Figure 3 This is a top view of the petri dish body in Example 1;

[0027] Figure 4 This is a front view of multiple culture dishes after they have been rotated and snapped together in Example 1;

[0028] Figure 5 This is an enlarged view of the L-shaped groove in Example 1;

[0029] Figure 6 This is an enlarged view of the L-shaped groove in Example 2. Detailed Implementation

[0030] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0031] Example 1

[0032] The specific embodiments of this utility model are as follows: Figures 1 to 5 As shown, a petri dish includes a petri dish body 1 with an inner cavity 11. The petri dish body 1 is generally cylindrical. Four upwardly extending L-shaped protrusions 5 are provided on the upper part of the outer side wall of the petri dish body 1. The upper ends of the L-shaped protrusions 5 are higher than the top surface of the petri dish body 1. Four L-shaped grooves 6 are provided on the lower part of the outer side wall of the petri dish body 1. The lower openings of the L-shaped grooves 6 are located on the bottom surface of the petri dish body 1. The four L-shaped protrusions 5 and the four L-shaped grooves 6 are evenly distributed around the central axis of the petri dish body 1. When multiple petri dishes are stacked, the L-shaped protrusions 5 of the lower petri dish body 1 and the L-shaped grooves 6 of the upper petri dish body 1 are rotatably engaged. Figure 1 As shown.

[0033] The L-shaped protrusion 5 includes a vertical rod 52 and a protrusion 51. The lower end of the vertical rod 52 is connected to the upper part of the outer wall of the petri dish body 1, and the protrusion 51 is disposed on the inner side of the upper end of the vertical rod 52. The L-shaped groove 6 includes a vertical groove 61 and a horizontal groove 62, both of which are disposed on the outer wall of the petri dish body 1. The opening at the lower end of the vertical groove 61 is located on the bottom surface of the petri dish body 1, and the upper end of the vertical groove 61 is connected to one end of the horizontal groove 62. The protrusion 51 slides vertically with the vertical groove 61, and the protrusion 51 slides horizontally with the horizontal groove 62.

[0034] During operation, first move the lower culture dish body 1 directly below the upper culture dish body 1, so that the protrusion 51 of the lower culture dish body 1 is directly below the lower opening of the vertical groove 61 of the upper culture dish body 1. Then, slide the protrusion 51 of the lower culture dish body 1 upward from the lower opening of the vertical groove 61 into the vertical groove 61 until the protrusion 51 reaches the upper end of the vertical groove 61. Then, rotate the upper and lower culture dish bodies 1 relative to each other around their central axis by a certain angle, so that the protrusion 51 of the lower culture dish body 1 slides laterally into the horizontal groove 62, thereby completing the rotational locking of the upper and lower culture dish bodies 1.

[0035] In this embodiment, a limiting protrusion 63 is provided at the edge of the connection between the vertical groove 61 and the horizontal groove 62. For example... Figure 5As shown, after the protrusion 51 of the lower culture dish body 1 overcomes the resistance of the limiting protrusion 63 and slides to the left into the horizontal groove 62, the limiting protrusion 63 is located on the right side of the protrusion 51 and provides some obstruction to the protrusion 51, preventing the protrusion 51 from sliding out of the horizontal groove 62 and becoming loose due to shaking when handling multiple stacked culture dishes. When it is necessary to release the rotational locking between the upper and lower culture dishes, the operator applies a little force to make the upper and lower culture dishes rotate relative to each other, causing the protrusion 51 of the lower culture dish body 1 to overcome the resistance of the limiting protrusion 63 and slide to the right out of the horizontal groove 62, and then move it downwards from the lower opening of the vertical groove 61. The operation is convenient.

[0036] The bottom surface of the petri dish body 1 is provided with an anti-slip layer 3. In this embodiment, the anti-slip layer 3 is made of honeycomb silicone material. The position of the anti-slip layer 3 should not block the lower opening of the vertical groove 61.

[0037] The petri dish body 1 is made of transparent material, and a grid pattern 7 is provided on the bottom surface of the petri dish body 1. In this embodiment, the grid pattern 7 adopts a nine-square grid format, such as... Figure 3 As shown.

[0038] A label protector 4 is attached to the outer wall of the petri dish body 1. One edge of the label protector 4 has a label insertion interface 41. The label protector 4 is made of transparent material. In use, paper labels can be inserted into the label protector 4 through the label insertion interface 41, and the label protector 4 protects the paper labels.

[0039] The top opening of the inner cavity 11 of the petri dish body 1 is provided with a lid 2 that fits therein. The outer wall of the lid 2 is connected to the inner wall of the opening of the inner cavity 11 of the petri dish body 1 by a thread. A handle 21 is provided in the recessed part of the top surface of the lid 2. The handle 21 does not protrude from the top surface of the lid 2. By pinching the handle 21 with your fingers, the lid 2 can be rotated relative to the petri dish body 1.

[0040] Example 2

[0041] like Figure 6 As shown, the difference from Embodiment 1 is that the limiting protrusion 63 is not provided at the edge of the connection between the vertical groove 61 and the horizontal groove 62. Instead, a first magnetic element 81 is embedded in the protrusion 51, and a second magnetic element 82 is embedded in the petri dish body 1 at a position adjacent to the horizontal groove 62. When the protrusion 51 slides into the horizontal groove 62 to the left, the first magnetic element 81 and the second magnetic element 82 magnetically attract each other due to their proximity, preventing the protrusion 51 from sliding out of the horizontal groove 62 to the right and becoming loose when personnel are handling multiple petri dishes stacked on top of each other.

[0042] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A culture dish comprising a culture dish main body (1) provided with an inner cavity (11) and having a cylindrical shape, characterized in that, The upper part of the outer side wall of the culture dish body (1) is provided with at least two upwardly extending L-shaped protrusions (5), the upper end of the L-shaped protrusions (5) is higher than the top surface of the culture dish body (1), and the lower part of the outer side wall of the culture dish body (1) is provided with at least two L-shaped grooves (6), the lower end opening of the L-shaped grooves (6) is located on the bottom surface of the culture dish body (1); the L-shaped protrusions (5) of the lower layer of the culture dish body (1) and the L-shaped grooves (6) of the upper layer of the culture dish body (1) are rotated and engaged.

2. A petri dish according to claim 1, characterized in that, The L-shaped protrusion (5) includes a vertical rod (52) and a protrusion (51). The lower end of the vertical rod (52) is connected to the upper part of the outer wall of the culture dish body (1), and the protrusion (51) is located on the inner side of the upper end of the vertical rod (52). The L-shaped groove (6) includes a vertical groove (61) and a horizontal groove (62) both located on the outer wall of the culture dish body (1). The opening at the lower end of the vertical groove (61) is located on the bottom surface of the culture dish body (1), and the upper end of the vertical groove (61) is connected to one end of the horizontal groove (62). The protrusion (51) slides vertically and vertically with the vertical groove (61), and the protrusion (51) slides horizontally with the horizontal groove (62).

3. A petri dish according to claim 2, characterized in that, The edge of the connection between the vertical groove (61) and the horizontal groove (62) is provided with a limiting protrusion (63).

4. A petri dish according to claim 2, characterized in that, The protrusion (51) is provided with a first magnetic element (81), and the culture dish body (1) is provided with a second magnetic element (82) at a position adjacent to the transverse groove (62). The first magnetic element (81) and the second magnetic element (82) are magnetically attracted to each other.

5. A petri dish according to claim 1, characterized in that, The bottom surface of the culture dish body (1) is provided with an anti-slip layer (3); the anti-slip layer (3) is made of honeycomb silicone material.

6. A petri dish according to claim 1, characterized in that, The petri dish body (1) is made of transparent material, and grid lines (7) are provided on the bottom surface of the petri dish body (1).

7. A petri dish according to claim 1, characterized in that, A label protection cover (4) is connected to the outer wall of the main body (1) of the culture dish. A label insertion interface (41) is provided on one side edge of the label protection cover (4). The label protection cover (4) is made of transparent material.

8. A petri dish according to claim 1, characterized in that, The top opening of the inner cavity (11) of the culture dish body (1) is provided with a lid (2) that fits into it. The outer wall of the lid (2) is connected to the inner wall of the opening of the inner cavity (11) of the culture dish body (1) by a thread.

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