A test tube rack

Abstract

The application belongs to the technical field of testing equipment, and discloses a test tube rack which comprises a rack body and a plurality of hole adjusting plates which are detachably connected to the rack body, the rack body is provided with a top partition plate and a middle partition plate which is located below the top partition plate, a plurality of fixing holes are correspondingly arranged on the top partition plate and the middle partition plate, each hole adjusting plate is provided with an adjusting hole, the diameter of the adjusting hole is smaller than that of the fixing hole, the middle partition plate is provided with mounting positions for mounting the hole adjusting plates, when the hole adjusting plates are located on the mounting positions, the adjusting holes on the hole adjusting plates are coaxial with the opposite fixing holes, so that the same test tube rack can be used for placing test tubes of various models, the flexibility of the test tube rack is improved, the use experience of the operator is improved, the test tubes can be conveniently taken by the operator, and the stability of the test tube rack is improved.

Description

Technical Field

[0001] This application belongs to the technical field of testing equipment, specifically relating to a test tube rack. Background Technology

[0002] Test tube racks are one of the most common and basic laboratory instruments. They are mainly used for placing, securing, and transporting test tubes, and sometimes for storing other similarly shaped glassware, such as centrifuge tubes and colorimetric tubes. The mounting holes on common test tube racks are usually designed for test tubes of specific diameters; that is, the diameter of the mounting holes is constant for each type of test tube rack. If multiple sizes of test tubes are needed at once, multiple test tube racks are required, which negatively impacts the user experience.

[0003] To improve the user experience, related technologies, such as Chinese Utility Model No. CN221580682U, disclose a multi-size adaptable test tube rack, which includes a support and several shelves. Each shelf is fixed relative to the support, and each shelf has several fixing holes. The edges of the fixing holes include several inwardly positioned positioning flaps, which are hinged relative to the fixing holes. An elastic element is provided between the positioning flaps and the fixing holes. The elastic element drives the positioning flaps to swing inward, thus enabling the positioning flaps to hold smaller diameter test tubes in place. The test tube rack is supported by the tube wall to ensure that the test tubes are in a vertical position, so that the same test tube rack can accommodate a variety of test tubes and improve the user experience. However, after the test tube is placed in the fixing hole, the positioning flap will form a barb-like structure with the tube wall. This means that the operator needs to apply a large pulling force to remove the test tube from the test tube rack, which affects the operator's ease of operation. At the same time, applying a large pulling force to the test tube may also cause the test tube rack to move upward with the test tube, thus affecting the stability of the test tube rack. Utility Model Content

[0004] This application provides a test tube rack to improve the flexibility of the test tube rack, making it easier to retrieve test tubes and increasing the stability of the test tube rack.

[0005] The technical solution adopted in this application is as follows:

[0006] A test tube rack includes a frame and multiple adjustable plates removably connected to the frame. The frame has a top partition and a middle partition located below the top partition. The top partition and the middle partition are respectively provided with multiple fixing holes. Each adjustable plate is provided with an adjustment hole, the diameter of which is smaller than the diameter of the fixing hole. The middle partition is provided with a mounting position for mounting the adjustable plate. When the adjustable plate is located in the mounting position, the adjustment hole on the adjustable plate and the corresponding fixing hole are coaxial.

[0007] By adopting the above technical solution, when placing test tubes of different diameters using the test tube rack in this application, it is only necessary to install the adjusting plate according to the diameter of the test tube. The adjusting plate, whose hole diameter matches the diameter of the test tube, is installed in the mounting position. Then, the test tube is inserted into the rack from top to bottom, so that the outer circumference of the test tube abuts against the hole wall of the adjusting hole. The adjusting plate and the rack limit the position of the test tube, thereby avoiding the test tube from tipping over due to the mismatch between the hole diameter and the test tube diameter, thus increasing the stability of the test tube. At the same time, the same test tube rack can be used to place multiple types of test tubes, increasing the flexibility of the test tube rack and improving the user experience.

[0008] Furthermore, compared to existing technologies that use positioning flaps to position test tubes, the adjustment plate does not form a hook structure with the test tube, allowing the operator to remove the test tube from the test tube rack with less force. This makes it easier for the operator to pick up the test tube and also avoids situations where the test tube rack shakes or moves upward with the test tube due to the operator having to apply a large force to the test tube, thus increasing the stability of the test tube rack.

[0009] Optionally, the mounting position is formed at the top of the central partition, and the central partition is provided with a blocking rib located on the side of the mounting position.

[0010] By adopting the above technical solution, since the top of the middle partition forms a mounting position, the middle partition can be used to support the adjusting plate, thereby increasing the stability of the adjusting plate when placed in the mounting position. At the same time, since the middle partition is provided with a blocking rib on the side of the mounting position, after the adjusting plate is placed in the mounting position, the side of the adjusting plate can abut against the blocking rib, thereby limiting the adjustment plate and further increasing the stability of the adjusting plate, thus improving the stability of the test tube passing through the adjusting hole.

[0011] Optionally, the frame is provided with a positioning groove located on the side of the central partition, and each of the adjusting plates is provided with a positioning rib that can extend into the positioning groove.

[0012] By adopting the above technical solution, since the frame is equipped with a positioning groove on the side of the middle partition, and the adjusting plate is equipped with a positioning rib that can extend into the positioning groove, after the adjusting plate is installed in the mounting position, the positioning rib can be located in the positioning groove. The insertion and cooperation between the positioning rib and the positioning groove can limit the position of the adjusting plate, thereby further increasing the stability of the adjusting plate and further increasing the stability of the test tubes placed in the test tube rack. At the same time, the positioning of the adjusting plate can also be achieved by the cooperation between the positioning rib and the positioning groove, so as to facilitate the operator to accurately install the adjusting plate into place.

[0013] Optionally, each of the adjusting plates is provided with an extension rib located outside the positioning rib, and the height of the positioning rib is greater than the depth of the positioning groove.

[0014] By adopting the above technical solution, since the adjusting plate is extended with an extension rib located outside the positioning rib, and the height of the positioning rib is greater than the depth of the positioning groove, after the adjusting plate is placed in the installation position, there is a gap between the extension rib and the positioning groove, so that the operator can grasp the extension rib by hand and remove the adjusting plate, thereby improving the disassembly efficiency of the adjusting plate.

[0015] Optionally, the positioning groove is provided with a label groove, which penetrates the adjusting plate in the thickness direction of the adjusting plate.

[0016] By adopting the above technical solution, since the label slot penetrates the orifice plate in the thickness direction of the orifice plate, the operator can insert the label used to distinguish the test tubes into the label slot, so as to facilitate the operator to distinguish the test tubes.

[0017] Optionally, one of the central partition and the adjusting plate is provided with a first iron block, and the other is provided with a magnet that can magnetically engage with the first iron block.

[0018] By adopting the above technical solution, since one of the middle partition and the orifice plate is provided with a first iron block, and the other is provided with a magnet that can magnetically engage with the first iron block, after the orifice plate is installed in the mounting position, the magnetic engagement of the first iron block and the magnet can be used to further fix the orifice plate, thereby increasing the stability of the orifice plate when it is in the mounting position. At the same time, it can also prevent the orifice plate from moving upward with the test tube when the test tube is picked up, thereby further facilitating the operator to pick up the test tube and further increasing the stability of the test tube rack.

[0019] Optionally, the first iron block is embedded in the central partition, and the magnet is embedded in the adjusting plate.

[0020] By adopting the above technical solution, since the first iron block is embedded in the middle partition and the magnet is embedded in the adjustment plate, the connection stability between the first iron block and the middle partition and the connection stability between the magnet and the adjustment plate are increased on the one hand, and the contact area between the adjustment plate and the middle partition is guaranteed on the other hand, thereby increasing the stability of the adjustment plate when it is installed in the mounting position.

[0021] Optionally, the height of the magnet is equal to the thickness of the adjusting plate, the frame has a base plate, and the base plate is provided with a second iron block that can be magnetically attracted by the magnet.

[0022] By adopting the above technical solution, since the height of the magnet is equal to the thickness of the orifice plate, the magnet penetrates the orifice plate through the thickness direction of the orifice plate. A second iron block that can be magnetically attracted by the magnet is provided at the bottom, so that the idle orifice plate can be placed on the base plate. The magnetic attraction between the second iron block and the magnet is used to fix the orifice plate, thereby increasing the connection stability between the orifice plate and the base plate.

[0023] Optionally, the frame also has a bottom partition located below the middle partition, the bottom partition having a correction blind hole corresponding to the fixing hole, the diameter of the correction blind hole being equal to the diameter of the fixing hole, and the bottom wall of the correction blind hole being spherical.

[0024] By adopting the above technical solution, since the bottom partition is located below the middle partition, and the bottom partition is provided with a correction blind hole corresponding to the fixing hole, the bottom wall of the correction blind hole is spherical. After the test tube is placed in the test tube rack, the bottom wall of the correction blind hole can be used to correct the test tube so that the test tube is in a coaxial state with the fixing hole, thereby further increasing the stability of the test tube.

[0025] Optionally, the frame also has a base plate located below the bottom partition, and a storage space for accommodating the adjustment plate is formed between the base plate and the bottom partition.

[0026] By adopting the above technical solution, a storage space for the orifice plate is formed between the base plate and the bottom partition. This allows the idle orifice plate to be placed between the bottom partition and the base plate, thus storing the idle orifice plate. At the same time, it also prevents the test tubes placed on the test tube rack from touching the idle orifice plate and affecting the removal of the orifice plate, thereby facilitating the removal of the orifice plate.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The test tube rack in this application includes a frame and multiple adjustable plates removably connected to the frame. The frame has a top partition and a middle partition located below the top partition. The top partition and the middle partition are respectively provided with multiple fixing holes. Each adjustable plate is provided with an adjustment hole, the diameter of which is smaller than the diameter of the fixing hole. The middle partition is provided with a mounting position for installing the adjustable plate. When the adjustable plate is in the mounting position, the adjustment hole on the adjustable plate and the corresponding fixing hole are coaxial, thereby enabling the same test tube rack to be used for various types of test tubes. The placement of the test tube rack increases its flexibility, thereby improving the user experience. Compared to existing technologies that use positioning flaps to position test tubes, the adjustment plate does not form a hook structure between the plate and the test tube. This allows the operator to remove the test tube from the rack with less force, making it easier to pick up the test tube. It also avoids situations where the test tube rack shakes or moves upward with the test tube due to the operator having to apply a lot of force, thus increasing the stability of the test tube rack.

[0029] 2. The top of the central partition in this application forms a mounting position, which can then support the adjusting plate to increase the stability of the adjusting plate when placed in the mounting position. The central partition is provided with a blocking rib on the side of the mounting position. After the adjusting plate is placed in the mounting position, the side of the adjusting plate can abut against the blocking rib to limit the adjustment plate and further increase the stability of the adjusting plate, thereby improving the stability of the test tube passing through the adjusting hole.

[0030] 3. The frame in this application is provided with a positioning groove on the side of the central partition. Each adjusting plate is provided with a positioning rib that can extend into the positioning groove. After the adjusting plate is installed in the mounting position, the positioning rib can be located in the positioning groove. The positioning rib and the positioning groove are engaged to limit the position of the adjusting plate, thereby increasing the stability of the adjusting plate and further increasing the stability of the test tubes placed in the test tube rack. At the same time, the positioning rib and the positioning groove can be used to position the adjusting plate, so as to facilitate the operator to accurately install the adjusting plate into place. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the test tube rack described in one embodiment of this application;

[0033] Figure 2 This is a cross-sectional view of the test tube rack described in one embodiment of this application;

[0034] Figure 3 This is a schematic diagram of the structure of the frame described in one embodiment of this application. In the figure, solid arrows indicate the height direction of the frame, dashed arrows indicate the length direction of the frame, and dotted arrows indicate the width direction of the frame.

[0035] Figure 4 This is a schematic diagram of the frame structure from another perspective in one embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the structure of the orifice plate described in one embodiment of this application.

[0037] Figure label:

[0038] 1. Frame; 11. Top partition; 111. Fixing hole; 12. Middle partition; 121. Blocking rib; 122. Positioning groove; 13. Bottom partition; 131. Protrusion; 132. Correction blind hole; 133. First iron block; 14. Base plate; 141. Dividing rib; 142. Second iron block; 15. Support plate; 2. Adjustment plate; 21. Positioning rib; 22. Label groove; 23. Extension rib; 24. Magnet; 25. Adjustment hole. Detailed Implementation

[0039] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0041] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0044] Reference Figures 1 to 5 A test tube rack is disclosed, comprising a frame body 1 and multiple adjustable plates 2 detachably connected to the frame body 1. The frame body 1 has a top partition 11 and a middle partition 12 located below the top partition 11. The top partition 11 and the middle partition 12 are respectively provided with multiple fixing holes 111. Each adjustable plate 2 is provided with an adjusting hole 25. The diameter of the adjusting hole 25 is smaller than the diameter of the fixing hole 111. The middle partition 12 is provided with a mounting position for installing the adjustable plate 2. When the adjustable plate 2 is in the mounting position, the adjusting hole 25 on the adjustable plate 2 is coaxial with the corresponding fixing hole 111.

[0045] It is understood that the frame 1 has a length direction, a width direction perpendicular to the length direction, and a height direction perpendicular to the length and width directions. The top partition 11 and the middle partition 12 are arranged sequentially along the height direction of the frame 1. The diameter of the multiple fixing holes 111 is the same. When the adjustment hole 25 is in the installation position, the central axis of the adjustment hole 25 on the adjustment plate 2 in the installation position is collinear with the central axis of the fixing hole 111 that is opposite to the adjustment hole 25 in the vertical direction. Multiple installation positions are arranged sequentially along the length direction of the frame 1.

[0046] It should be noted that the "multiple adjustment plates 2 that can be placed and removed from the frame 1" mentioned above means that the adjustment plates 2 can be placed on the frame 1 and can also be separated from the frame 1.

[0047] When using the test tube rack of this application to place test tubes of different diameters, simply install the adjusting plate 2 according to the diameter of the test tube. Install the adjusting plate 2, whose hole diameter matches the diameter of the test tube, in the mounting position. Then, insert the test tube into the rack body 1 from top to bottom, so that the outer circumference of the test tube abuts against the hole wall of the adjusting hole 25. The adjusting plate 2 and the rack body 1 limit the position of the test tube, thereby avoiding the test tube from tipping over due to the mismatch between the hole diameter of the fixing hole 111 and the diameter of the test tube. This increases the stability of the test tube and allows the same test tube rack to be used to place multiple types of test tubes, increasing the flexibility of the test tube rack and improving the user experience.

[0048] Furthermore, compared to existing technologies that use positioning flaps to position test tubes, the adjusting plate 2 does not form a barb structure with the test tube, allowing the operator to remove the test tube from the test tube rack with less force. This makes it easier for the operator to pick up the test tube and also avoids situations where the test tube rack shakes or moves upward with the test tube due to the operator having to apply a large force to the test tube, thereby increasing the stability of the test tube rack.

[0049] This application does not specifically limit the relationship between the diameters of the adjusting holes 25 on the multiple adjusting plates 2. Preferably, the diameters of the adjusting holes 25 on the multiple adjusting plates 2 are different to further increase the flexibility of the test tube rack. In other embodiments, the diameters of the adjusting holes 25 on the multiple adjusting plates 2 may be the same and not equal to the diameter of the fixed hole 111.

[0050] This application does not specify a particular installation location; however, preferred options are described below. Figure 3 The top of the middle partition 12 forms a mounting position, and the middle partition 12 is provided with a blocking rib 121 located on the side of the mounting position.

[0051] It is understood that the top plane of the middle partition 12 forms multiple mounting positions, and a blocking rib 121 is provided between two adjacent mounting positions. The blocking rib 121 extends along the width direction of the frame 1 so that the adjusting plate 2 can be picked up and put down by applying a force parallel to the width direction of the frame 1.

[0052] Since the top of the middle partition 12 forms a mounting position, the middle partition 12 can be used to support the adjusting plate 2, thereby increasing the stability of the adjusting plate 2 when placed in the mounting position. At the same time, since the middle partition 12 is provided with a blocking rib 121 located on the side of the mounting position, after the adjusting plate 2 is placed in the mounting position, the side of the adjusting plate 2 can abut against the blocking rib 121, thereby limiting the adjusting plate 2 and further increasing the stability of the adjusting plate 2, thereby improving the stability of the test tube passing through the adjusting hole 25.

[0053] In other embodiments, the frame 1 also includes a lower partition located below the middle partition 12. The lower partition is provided with a hole structure corresponding to the adjustment hole 25. The diameter of the hole structure is equal to the diameter of the fixing hole 111, and the distance between the lower partition and the middle partition 12 is equal to the thickness of the adjustment plate 2, so that the space between the lower partition and the middle partition 12 together forms the installation position.

[0054] In a preferred embodiment, refer to Figure 2 , Figure 4 and Figure 5 The frame 1 is provided with a positioning groove 122 located on the side of the middle partition 12, and each adjusting plate 2 is provided with a positioning rib 21 that can extend into the positioning groove 122.

[0055] It is understood that the positioning groove 122 extends along the length of the frame 1, and the positioning groove 122 is located at one end of the middle partition 12 in the width direction of the frame 1.

[0056] Because the frame 1 is provided with a positioning groove 122 located on the side of the middle partition 12, and the adjusting plate 2 is provided with a positioning rib 21 that can extend into the positioning groove 122, after the adjusting plate 2 is installed in the mounting position, the positioning rib 21 can be located in the positioning groove 122, so as to limit the adjusting plate 2 by the insertion and cooperation of the positioning rib 21 and the positioning groove 122, thereby further increasing the stability of the adjusting plate 2, and further increasing the stability of the test tube placed in the test tube rack; at the same time, the positioning of the adjusting plate 2 can also be achieved by the cooperation of the positioning rib 21 and the positioning groove 122, so as to facilitate the operator to accurately install the adjusting plate 2 into place.

[0057] Preferably, the positioning rib 21 and the adjusting plate 2 are integrally formed, which reduces the manufacturing cost of the adjusting plate 2 on the one hand, and increases the connection stability between the positioning rib 21 and the adjusting plate 2 on the other hand.

[0058] This application does not specifically limit the formation method of the positioning groove 122; preferably, refer to Figure 4 The frame 1 has C-shaped ribs fixedly connected to the central partition 12, and the internal space of the C-shaped ribs forms a positioning groove 122. In other embodiments, the positioning groove 122 may also be formed by a groove-shaped structure formed on the central partition 12.

[0059] Furthermore, refer to Figure 2 and Figure 5 Each adjusting plate 2 is provided with an extension rib 23 located outside the positioning rib 21, and the height of the positioning rib 21 is greater than the depth of the positioning groove 122.

[0060] It is understandable that after the adjusting plate 2 is installed in the mounting position, there is a gap between the extension rib 23 and the C-shaped rib.

[0061] It should be noted that the outside of the positioning rib 21 refers to the side of the positioning rib 21 that is away from the adjusting plate 2.

[0062] Since the adjusting plate 2 is provided with an extension rib 23 located outside the positioning rib 21, and the height of the positioning rib 21 is greater than the depth of the positioning groove 122, after the adjusting plate 2 is placed in the installation position, there is a gap between the extension rib 23 and the positioning groove 122, so that the operator can grasp the extension rib 23 by hand and remove the adjusting plate 2, thereby improving the disassembly efficiency of the adjusting plate 2.

[0063] Furthermore, refer to Figure 5 The positioning groove 122 is provided with a label groove 22, which penetrates the adjusting plate 2 in the thickness direction.

[0064] Understandably, after the adjustment plate 2 is installed in the mounting position, the groove of the label slot 22 faces upward.

[0065] Since the label slot 22 penetrates the orifice plate 2 in the thickness direction, the operator can insert the label used to distinguish the test tubes into the label slot 22, so as to facilitate the operator to distinguish the test tubes.

[0066] In a preferred embodiment, refer to Figure 2 One of the middle partition 12 and the adjusting plate 2 is provided with a first iron block 133, and the other is provided with a magnet 24 that can magnetically engage with the first iron block 133.

[0067] It is understandable that after the adjustment plate 2 is installed in the mounting position, the magnet 24 and the first iron block 133 are magnetically attracted to each other.

[0068] Since one of the middle partition 12 and the orifice plate 2 is provided with a first iron block 133, and the other is provided with a magnet 24 that can magnetically engage with the first iron block 133, after the orifice plate 2 is installed in the mounting position, the magnetic engagement of the first iron block 133 and the magnet 24 can be used to further fix the orifice plate 2, thereby increasing the stability of the orifice plate 2 when it is in the mounting position. At the same time, it can also prevent the orifice plate 2 from moving upward with the test tube when the test tube is picked up, thereby further facilitating the operator to pick up the test tube and further increasing the stability of the test tube rack.

[0069] Preferably, the first iron block 133 is located in the middle partition 12, and the magnet 24 is located in the adjusting plate 2.

[0070] This application does not specify the fixed connection method between the first iron block 133 and the middle partition 12, or the fixed connection method between the magnet 24 and the adjusting plate 2. Preferably, the first iron block 133 is embedded in the middle partition 12, and the magnet 24 is embedded in the adjusting plate 2.

[0071] It is understood that the middle partition 12 is provided with a hole structure to accommodate the first iron block 133, and the first iron block 133 is embedded in the hole structure of the middle partition 12; the adjusting plate 2 is provided with a hole structure to accommodate the magnet 24, and the magnet 24 is embedded in the hole structure of the adjusting plate 2.

[0072] Since the first iron block 133 is embedded in the middle partition 12 and the magnet 24 is embedded in the adjusting plate 2, the connection stability between the first iron block 133 and the middle partition 12 and the connection stability between the magnet 24 and the adjusting plate 2 are increased on the one hand, and the contact area between the adjusting plate 2 and the middle partition 12 is guaranteed on the other hand, thereby increasing the stability of the adjusting plate 2 when it is installed in the mounting position.

[0073] Furthermore, refer to Figure 2 The height of magnet 24 is equal to the thickness of adjustment plate 2. The frame 1 has a base plate 14, and the base plate 14 is provided with a second iron block 142 that can be magnetically attracted by magnet 24.

[0074] It is understandable that the two end faces of the magnet 24 in the height direction are flush with the two end faces of the adjustment plate 2 in the thickness direction. After the adjustment plate 2 is placed on the base plate 14, the magnet 24 on the adjustment plate 2 can magnetically engage with the second iron block 142 on the base plate 14.

[0075] Since the height of the magnet 24 is equal to the thickness of the orifice plate 2, the magnet 24 penetrates the orifice plate 2 through the thickness direction of the orifice plate 2. A second iron block 142 that can be magnetically attracted by the magnet 24 is provided at the bottom, so that the idle orifice plate 2 can be placed on the base plate 14. The magnetic attraction between the second iron block 142 and the magnet 24 is used to fix the orifice plate 2, thereby increasing the connection stability between the orifice plate 2 and the base plate 14.

[0076] Preferably, the second iron block 142 is embedded in the top end face of the base plate 14 to increase the connection stability between the second iron block 142 and the base plate 14 and to ensure that when the adjusting plate 2 is placed on the base plate 14, the end face of the adjusting plate 2 can completely abut against the base plate 14.

[0077] It should be noted that when installing the adjusting plate 2 on the base plate 14, the groove of the label slot 22 should face downwards so that the positioning rib 21 is located above the adjusting plate 2, thereby making the positioning rib 21 avoid contact with the desktop or workbench.

[0078] In other embodiments, the magnet 24 can also be fixedly connected to the adjusting plate 2 by adhesive, and the first iron block 133 can also be fixedly connected to the middle partition 12 by adhesive.

[0079] In a preferred embodiment, refer to Figures 1 to 3 The frame 1 also has a bottom partition 13 located below the middle partition 12. The bottom partition 13 is provided with a correction blind hole 132 corresponding to the fixing hole 111. The diameter of the correction blind hole 132 is equal to the diameter of the fixing hole 111, and the bottom wall of the correction blind hole 132 is spherical.

[0080] Since the bottom partition 13 is located below the middle partition 12, the bottom partition 13 is provided with a correction blind hole 132 corresponding to the fixing hole 111. The bottom wall of the correction blind hole 132 is spherical. After the test tube is placed in the test tube rack, the bottom wall of the correction blind hole 132 can be used to correct the test tube so that the test tube is in a coaxial state with the fixing hole 111, thereby further increasing the stability of the test tube.

[0081] This application does not specifically limit the formation method of the correction blind hole 132; preferably, refer to Figure 1 and Figure 2 The bottom partition 13 is provided with a downwardly protruding protrusion 131, and the internal space of the protrusion 131 forms a correction blind hole 132. In other embodiments, the correction blind hole 132 may also be formed by a groove-shaped structure provided on the bottom wall of the bottom partition 13, which is spherical.

[0082] Furthermore, the frame 1 also has a base plate 14 located below the bottom partition 13. The base plate 14 and the bottom partition 13 form a storage space for accommodating the adjustment plate 2. This allows the idle adjustment plate 2 to be placed between the bottom partition 13 and the base plate 14, thus storing the idle adjustment plate 2. At the same time, it also prevents the test tubes placed on the test tube rack from touching the idle adjustment plate 2 and affecting the retrieval of the adjustment plate 2, thereby facilitating the retrieval of the adjustment plate 2.

[0083] Preferably, the distance between the protrusion 131 and the base plate 14 is equal to the thickness of the adjusting plate 2, so that after the adjusting plate 2 is placed in the storage space, the two end faces of the adjusting plate 2 in the thickness direction abut against the protrusion 131 and the base plate 14 respectively, thereby increasing the stability of the adjusting plate 2.

[0084] Preferably, the base plate 14 is provided with a plurality of partition ribs 141, which are arranged sequentially along the length of the frame 1, and each partition rib 141 extends along the width of the frame 1. The distance between two adjacent partition ribs 141 is equal to the thickness of the adjusting plate 2, so as to limit the adjusting plate 2 by using the partition ribs 141, thereby increasing the stability of placing the adjusting plate 2 on the base plate 14.

[0085] Furthermore, the frame 1 has support plates 15 at both ends along its length, and the support plates 15 are integrally formed on the top partition 11, the middle partition 12, the bottom partition 13 and the base plate 14.

[0086] In other embodiments, the support plate 15 is provided with a hanging rod that extends along the length of the frame 1 so that the idle adjustment plate 2 can be hung on the hanging rod to store the idle adjustment plate 2.

[0087] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0088] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0089] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A rack for test tubes, characterized in that The device includes a frame (1) and multiple adjustable plates (2) that are removably connected to the frame (1). The frame (1) has a top partition (11) and a middle partition (12) located below the top partition (11). The top partition (11) and the middle partition (12) are respectively provided with multiple fixing holes (111). Each adjustable plate (2) is provided with an adjusting hole (25). The diameter of the adjusting hole (25) is smaller than the diameter of the fixing hole (111). The middle partition (12) is provided with a mounting position for installing the adjustable plate (2). When the adjustable plate (2) is located in the mounting position, the adjusting hole (25) on the adjustable plate (2) and the corresponding fixing hole (111) are coaxial.

2. The test tube rack of claim 1, wherein, The mounting position is formed at the top of the central partition (12), and the central partition (12) is provided with a blocking rib (121) located on the side of the mounting position.

3. A rack as claimed in claim 1 or 2, characterised in that The frame (1) is provided with a positioning groove (122) located on the side of the middle partition (12), and each of the adjusting plates (2) is provided with a positioning rib (21) that can extend into the positioning groove (122).

4. A rack as claimed in claim 3, wherein Each of the adjustment plates (2) is provided with an extension rib (23) located outside the positioning rib (21), and the height of the positioning rib (21) is greater than the depth of the positioning groove (122).

5. The test tube rack of claim 3 wherein, The positioning groove (122) is provided with a label groove (22), which penetrates the adjusting plate (2) in the thickness direction.

6. The test tube rack of claim 1 or 2, wherein One of the central partition (12) and the adjusting plate (2) is provided with a first iron block (133), and the other is provided with a magnet (24) that can magnetically engage with the first iron block (133).

7. A rack as claimed in claim 6, wherein The first iron block (133) is embedded in the middle partition (12), and the magnet (24) is embedded in the adjusting plate (2).

8. A rack as claimed in claim 7, wherein The height of the magnet (24) is equal to the thickness of the adjusting plate (2), and the frame (1) has a base plate (14), on which a second iron block (142) is provided that can be magnetically attracted by the magnet (24).

9. The test tube rack of claim 1 or 2, wherein The frame (1) also has a bottom partition (13) located below the middle partition (12). The bottom partition (13) is provided with a correction blind hole (132) corresponding to the fixing hole (111). The diameter of the correction blind hole (132) is equal to the diameter of the fixing hole (111), and the bottom wall of the correction blind hole (132) is spherical.

10. The test tube rack of claim 9, wherein, The frame (1) also has a base plate (14) located below the bottom partition (13), and a storage space for accommodating the adjustment plate (2) is formed between the base plate (14) and the bottom partition (13).

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