Test tube rack convenient for counting microorganisms

Abstract

The utility model discloses a test tube rack convenient for counting microorganisms, belongs to the technical field of test tube racks, and solves the problems that the distance between an upper rack plate and a lower rack plate of an existing device cannot be adjusted, the existing device is inconvenient to adapt to test tubes with different lengths and has limitation. A threaded rod is rotationally installed in the middle of the top face of the lower frame disc through a bearing ring, limiting rods fixedly installed on the top face of the lower frame disc are arranged on the left side and the right side of the threaded rod, limiting plates are fixedly installed on the top faces of the limiting rods, and the outer surface of the threaded rod is sleeved with the middle of the upper frame disc in a threaded mode; the limiting rod is slidably sleeved with the upper frame disc, the threaded rod is driven to rotate through the rotary knob, and then the upper frame disc can move up and down along the surfaces of the threaded rod and the limiting rod through the limiting effect of the limiting rod on the upper frame disc, so that the aim of conveniently adjusting the distance between the lower frame disc and the upper frame disc is achieved, and the test tubes with different lengths can be conveniently adapted; the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of test tube rack technology, specifically a test tube rack for facilitating microbial counting. Background Technology

[0002] When counting viable microorganisms, it is usually necessary to prepare a series of dilutions of different concentrations from the sample, then take a certain amount of dilution and inoculate it into a specific culture medium in a petri dish, and finally calculate the number of viable bacteria based on the number of colonies that grow on the plate. In this process, multiple test tubes are on the test tube rack at the same time, which is not only inconvenient to take out, but also easy to be confused and cross-contaminated.

[0003] A search revealed that patent application number 202023201983.5 discloses a test tube rack for convenient microbial counting, belonging to the field of laboratory equipment technology. The rack includes an upper shelf and a lower shelf. The upper shelf has five rows of test tube holes; each pair of test tube holes forms a group, and the upper shelf has five groups of test tube holes. The spacing between each group of test tube holes is greater than or equal to the diameter of the test tube hole. The lower shelf has grooves corresponding to the positions of the test tube holes. The short sides of both the upper and lower shelves are fixed to side plates. Multiple test tube racks can be stacked vertically.

[0004] Although this convenient test tube rack for microbial counting can separate multiple samples by adjusting the existing distribution of test tube wells, the distance between the upper and lower rack plates cannot be adjusted, making it inconvenient to accommodate test tubes of different lengths, thus having limitations.

[0005] Therefore, we propose a test tube rack for convenient microbial counting. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a test tube rack for convenient microbial counting, solving the problem that the spacing between the upper and lower racks of existing devices cannot be adjusted, making it inconvenient to accommodate test tubes of different lengths and thus limiting their functionality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a test tube rack for convenient microbial counting, comprising a lower rack and an upper rack. A threaded rod is rotatably mounted on the center of the top surface of the lower rack via a bearing ring. Limiting rods are fixedly mounted on the left and right sides of the threaded rod on the top surface of the lower rack. A limiting plate is fixedly mounted on the top surface of the limiting rod. A smooth rod portion is provided at the top of the threaded rod, and the smooth rod portion is rotatably fitted onto the center of the limiting plate. A second annular damping pad that contacts the limiting plate is fixedly fitted onto the smooth rod portion of the threaded rod. The center of the upper rack is threaded onto the outer surface of the threaded rod, and the limiting rod is slidably fitted inside the upper rack.

[0008] The second annular damping pad can restrict the rotation of the threaded rod, thereby preventing the threaded rod from rotating arbitrarily.

[0009] Preferably, the top end of the threaded rod extends above the limiting plate and is fixedly mounted with a knob. The knob has anti-slip grooves arranged in a ring array on its arc surface, which facilitates the rotation of the threaded rod.

[0010] Preferably, the top surface of the upper tray has three fan-shaped grooves arranged in a ring array, and the bottom surface of each fan-shaped groove has test tube holes arranged in a radiating pattern. The fan-shaped grooves allow different test tubes to be placed in separate areas.

[0011] Preferably, the top surface of the lower tray has a test tube groove corresponding to the position of the test tube hole, wherein the test tube groove facilitates the storage of the bottom end of the test tube.

[0012] Preferably, the lower shelf plate is rotatably mounted inside the base via a bearing ring, and a first annular damping pad is fixedly mounted on the side wall of the base. The side of the first annular damping pad away from the side wall of the base contacts the arc surface of the lower shelf plate, so as to facilitate the synchronous rotation of the lower shelf plate and the upper shelf plate, and to allow the lower shelf plate and the upper shelf plate to be fixed after rotating at a certain angle.

[0013] This invention provides a test tube rack for convenient microbial counting. It offers the following advantages:

[0014] 1. This test tube rack for convenient microbial counting uses a knob to rotate a threaded rod, which in turn limits the upper rack tray via a limiting rod. This allows the upper rack tray to move up and down along the surfaces of the threaded rod and the limiting rod, making it easy to adjust the distance between the upper and lower rack trays. This accommodates test tubes of different lengths and has a wide range of applications. It solves the problem that the distance between the upper and lower rack plates of existing devices cannot be adjusted, making it difficult to accommodate test tubes of different lengths and thus limiting their applicability.

[0015] 2. This test tube rack for convenient microbial counting allows test tubes to be placed in sections through the fan-shaped grooves and test tube holes. By rotating the lower and upper racks on the base, the angle of the upper rack can be adjusted, making it easier to pick up and place the test tubes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the lower shelf tray and upper shelf tray structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the threaded rod structure of this utility model.

[0020] In the diagram: 1. Base plate; 11. First annular damping pad; 2. Lower rack plate; 21. Test tube trough; 3. Upper rack plate; 31. Fan-shaped groove; 32. Test tube hole; 4. Threaded rod; 41. Limiting rod; 42. Limiting plate; 43. Second annular damping pad; 44. Knob. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] like Figure 1-4 As shown: The device includes a lower mounting plate 2 and an upper mounting plate 3. A threaded rod 4 is rotatably mounted on the center of the top surface of the lower mounting plate 2 via a bearing ring. Limiting rods 41, fixedly mounted on the top surface of the lower mounting plate 2, are provided on both sides of the threaded rod 4. A limiting plate 42 is fixedly mounted on the top surface of the limiting rod 41. A smooth rod portion is provided at the top of the threaded rod 4, which rotatably fits onto the center of the limiting plate 42. A second annular damping pad 43, in contact with the limiting plate 42, is fixedly fitted onto the smooth rod portion of the threaded rod 4. The upper mounting plate 3 is threaded onto the outer surface of the threaded rod 4 at its center. The limiting rod 41 is slidably fitted inside the upper shelf plate 3. The top of the threaded rod 4 extends to the top of the limiting plate 42 and is fixedly installed with a knob 44. The curved surface of the knob 44 is provided with anti-slip grooves arranged in a ring array. The knob 44 drives the threaded rod 4 to rotate, and then the limiting rod 41 limits the upper shelf plate 3, so that the upper shelf plate 3 can move up and down along the surface of the threaded rod 4 and the limiting rod 41. This achieves the purpose of facilitating the adjustment of the distance between the lower shelf plate 2 and the upper shelf plate 3, so as to adapt to test tubes of different lengths and have a wide range of applications.

[0024] Example 2:

[0025] like Figure 1-3As shown: The top surface of the upper shelf tray 3 has three fan-shaped grooves 31 arranged in a ring array. The bottom surface of each fan-shaped groove 31 has test tube holes 32 arranged in a radiating pattern. The top surface of the lower shelf tray 2 has test tube slots 21 corresponding to the positions of the test tube holes 32. The lower shelf tray 2 is rotatably mounted inside the base 1 via a bearing ring. A first annular damping pad 11 is fixedly installed on the side wall of the base 1. The side of the first annular damping pad 11 away from the side wall of the base 1 contacts the arc surface of the lower shelf tray 2. Through the arrangement of the fan-shaped grooves 31 and the test tube holes 32, the test tubes can be placed in different areas. By rotating the lower shelf tray 2 and the upper shelf tray 3 on the base 1, the angle of the upper shelf tray 3 can be adjusted, thereby facilitating the picking up and placing of test tubes.

[0026] The working principle and usage process of this utility model: When using this test tube rack for convenient microbial counting, the lower rack 2 is fixed by hand, and then the threaded rod 4 is rotated by the knob 44. Then, the upper rack 3 is limited by the limiting rod 41, which allows the upper rack 3 to move up and down along the surface of the threaded rod 4 and the limiting rod 41. This makes it easier to adjust the distance between the lower rack 2 and the upper rack 3 to match the length of the test tubes to be used. The fan-shaped groove 31 and the test tube hole 32 allow the test tubes to be placed in sections. At the same time, when placing or taking out the test tubes, the lower rack 2 and the upper rack 3 can be rotated to adjust the angle of the upper rack 3, which makes it easier to pick up and place the test tubes.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A test tube rack for convenient microbial counting, characterized in that: The device includes a lower shelf (2) and an upper shelf (3). A threaded rod (4) is rotatably mounted on the middle of the top surface of the lower shelf (2) via a bearing ring. Limiting rods (41) are fixedly mounted on the top surface of the lower shelf (2) on the left and right sides of the threaded rod (4). A limiting plate (42) is fixedly mounted on the top surface of the limiting rod (41). A smooth rod part is provided at the top of the threaded rod (4). The smooth rod part is rotatably fitted in the middle of the limiting plate (42). A second annular damping pad (43) is fixedly fitted in the smooth rod part of the threaded rod (4) and contacts the limiting plate (42). The middle of the upper shelf (3) is threadedly fitted on the outer surface of the threaded rod (4). The limiting rod (41) is slidably fitted inside the upper shelf (3).

2. The test tube rack for convenient microbial counting according to claim 1, characterized in that: The top end of the threaded rod (4) extends above the limiting plate (42) and is fixedly mounted with a knob (44). The knob (44) has anti-slip grooves arranged in a ring array on its arc surface.

3. The test tube rack for convenient microbial counting according to claim 1, characterized in that: The top surface of the upper plate (3) is provided with three fan-shaped grooves (31) arranged in a ring array, and the bottom surface of each fan-shaped groove (31) is provided with test tube holes (32) arranged in a scattering pattern.

4. The test tube rack for convenient microbial counting according to claim 3, characterized in that: The top surface of the lower tray (2) is provided with a test tube groove (21) corresponding to the position of the test tube hole (32).

5. The test tube rack for convenient microbial counting according to claim 1, characterized in that: The lower rack plate (2) is rotatably mounted inside the base plate (1) via a bearing ring. A first annular damping pad (11) is fixedly mounted on the side wall of the base plate (1). The side of the first annular damping pad (11) away from the side wall of the base plate (1) contacts the arc surface of the lower rack plate (2).

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