Device for classified preservation of DNA (deoxyribonucleic acid) samples in low-temperature refrigerator

Abstract

The utility model discloses a device for classified preservation of DNA (deoxyribonucleic acid) samples in a low-temperature refrigerator, and relates to the technical field of DNA sample preservation, positioning mechanisms are symmetrically arranged on the inner side of a freezing box, each positioning mechanism comprises a positioning plate clamped in the freezing box, a connecting plate is fixedly mounted on the upper surface of each positioning plate, and each connecting plate is provided with a clamping groove. An adjusting plate is slidably mounted on the outer side of the connecting plate, a sample box is arranged on the upper surface of the adjusting plate, a placement groove is formed in the upper surface of the sample box, sample cells are mounted in the placement groove in an embedded manner, placement holes are formed in the upper surfaces of the sample cells, and fixing rods are symmetrically mounted on the upper surface of the sample box. A lifting rod is arranged at the upper end of the fixing rod in a penetrating mode, and the upper end of the lifting rod is connected with a pressing plate. The DNA sample test tube storage device can efficiently position and clamp a plurality of DNA sample test tubes, ensures the stability, and prevents the DNA sample test tubes from toppling over to influence the storage work.

Description

Technical Field

[0001] The utility model relates to the technical field of DNA sample preservation, in particular to a device for classifying and preserving DNA samples in a low-temperature refrigerator. Background Art

[0002] DNA samples are carriers of biological genetic information. By examining DNA samples, the genetic information of an individual can be analyzed and studied. DNA testing plays an important role in biotechnology, including criminal investigation, paternity testing, genetic disease screening, etc. After DNA samples are extracted, they need to be placed in a low-temperature refrigerator for storage to improve the accuracy of subsequent DNA samples during inspection.

[0003] A Chinese patent discloses a device for classifying and storing DNA samples in a low-temperature refrigerator (authorization announcement number CN211552156U). The patented technology has movable sample boxes and sample cells. This design makes it easier to take centrifuge tubes at different positions, and also avoids repeated freezing and thawing of DNA when storing and accessing samples. The refrigerant chamber is used to place a refrigerant, so that the utility model can achieve short-term storage and access of samples while still maintaining low temperatures.

[0004] However, existing test tubes for storing DNA samples often use a spring-loaded clamping mechanism, resulting in poor stability. This can easily cause the tubes to tip over and become damaged when impacted, compromising the preservation of the DNA samples. For example, the aforementioned reference document utilizes a spring-loaded clamping mechanism. In practice, collisions during storage can easily cause the tubes to tip over, compromising the preservation of the DNA samples. Therefore, those skilled in the art have provided a device for classifying and preserving DNA samples in a low-temperature refrigerator to address the issues raised in the aforementioned background art. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the present invention provides a device for classifying and storing DNA samples in a low-temperature refrigerator, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: A device for classifying and storing DNA samples in a low-temperature refrigerator, comprising: a freezing box and a box door hinged on the front surface of the freezing box, a positioning mechanism being symmetrically arranged on the inner side of the freezing box, the positioning mechanism comprising a positioning plate clamped on the freezing box, a connecting plate being fixedly installed on the upper surface of the positioning plate, an adjustment plate being slidably installed on the outer side of the connecting plate, a sample box being provided on the upper surface of the adjustment plate, a placement groove being provided on the upper surface of the sample box, a sample cell being embedded and installed in the interior of the placement groove, a placement hole being provided on the upper surface of the sample cell, a fixing rod being symmetrically installed on the upper surface of the sample box, a lifting rod being provided through the upper end of the fixing rod, and a pressing plate being connected to the upper end of the lifting rod.

[0007] As a further technical solution of the present invention, a limiting rod is symmetrically provided on one side of the positioning plate, and a limiting hole that engages with the limiting rod is opened on the inner side of the freezing box.

[0008] As a further technical solution of the present invention, the positioning plates and the connecting plates are arranged in an "L" shape, and at least two groups of positioning plates are symmetrically arranged on the inner side of the freezer.

[0009] As a further technical solution of the present invention, positioning rods are symmetrically provided on the upper surface of the adjustment plate, and positioning holes that are adapted to the positioning rods are opened on the lower surface of the sample box.

[0010] As a further technical solution of the present invention, a sealing gasket is further provided on the lower surface of the compression plate, a test tube for storing a DNA sample is embedded in the placement hole, and the lower surface of the sealing gasket contacts the upper end of the test tube.

[0011] As a further technical solution of the present invention, a spring is fixed to the inner end of the fixing rod, and the upper end of the spring is fixed to the lower end of the lifting rod.

[0012] The utility model provides a device for classifying and storing DNA samples in a low-temperature refrigerator, which has the following advantages compared with the prior art:

[0013] 1. This design is a device for classifying and storing DNA samples in a low-temperature refrigerator. Through the arrangement of a compression plate, a sealing gasket, a lifting rod, a fixing rod, and a spring, when the compression plate is pulled upward, the spring inside the fixing rod is deformed by tension. At this time, the lower end of the test tube storing the DNA sample can be inserted into the placement hole. After placement, the compression plate can be released to allow the spring to recover its deformation, and then the compression plate can be moved downward to press the DNA sample test tube to ensure its stability. This arrangement has a simple structure and is easy to operate. It can efficiently position and clamp multiple DNA sample test tubes to ensure stability and prevent them from tipping over and affecting their storage work.

[0014] 2. This design is a device for classifying and preserving DNA samples in a low-temperature refrigerator. Through the setting of the positioning mechanism, the positioning plate can be installed by embedding the limiting rod on one side of the positioning plate into the limiting hole, and there are multiple limiting holes. In this way, the positioning plate can be installed to different positions to meet the subsequent placement and preservation of test tubes of different heights. The length of the connecting plate can be adjusted by sliding the adjusting plate on the outside of the connecting plate, thereby meeting the placement of sample boxes of different lengths, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a device for classifying and storing DNA samples in a low-temperature refrigerator;

[0016] Figure 2 A schematic structural diagram of a device for a compression plate used in classifying and preserving DNA samples in a low-temperature refrigerator;

[0017] Figure 3 A schematic diagram of a device for positioning a DNA sample for classification and storage in a low-temperature refrigerator;

[0018] Figure 4 The figure is a schematic diagram of the structure of a device for classifying and storing springs in DNA samples in a low-temperature refrigerator.

[0019] In the figure: 1. Freezer; 11. Door; 2. Sample box; 3. Sample cell; 31. Placement hole; 4. Pressing plate; 41. Lifting rod; 42. Fixing rod; 43. Sealing gasket; 44. Spring; 5. Positioning mechanism; 51. Positioning plate; 52. Connecting plate; 53. Adjusting plate; 531. Positioning rod; 54. Limiting hole. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-4The present invention provides a technical solution for a device for classifying and storing DNA samples in a low-temperature refrigerator: it comprises: a freezing box 1 and a door 11 hinged on the front surface of the freezing box 1, a positioning mechanism 5 is symmetrically arranged on the inner side of the freezing box 1, the positioning mechanism 5 comprises a positioning plate 51 clamped on the freezing box 1, a connecting plate 52 is fixedly installed on the upper surface of the positioning plate 51, an adjusting plate 53 is slidably installed on the outer side of the connecting plate 52, a sample box 2 is arranged on the upper surface of the adjusting plate 53, a placement groove is opened on the upper surface of the sample box 2, and a placement groove is embedded in the interior of the placement groove. The sample cell 3 is installed, and a placement hole 31 is opened on the upper surface of the sample cell 3. The upper surface of the sample box 2 is also symmetrically installed with a fixing rod 42, and the upper end of the fixing rod 42 is penetrated by a lifting rod 41, and the upper end of the lifting rod 41 is connected to a pressing plate 4. This setting uses a positioning plate 51 to be clamped to different positions inside the freezer 1, thereby meeting the storage needs of DNA sample tubes of different heights, and the test tube inside the placement hole 31 can be pressed downward by the pressing plate 4, thereby ensuring the stability of the test tube for the convenience of DNA sample preservation.

[0022] like Figure 3 As shown, a limiting rod is symmetrically arranged on one side of the positioning plate 51, and a limiting hole 54 is opened on the inner side of the freezer 1 to engage with the limiting rod. This setting utilizes the limiting rod to be embedded in the limiting hole 54 to position the positioning plate 51 and install it on the inner side of the freezer 1.

[0023] like Figure 3 As shown, the positioning plate 51 and the connecting plate 52 are arranged in an "L" shape, and there are at least two groups of positioning plates 51 symmetrically arranged on the inner side of the freezer 1. This arrangement utilizes the connecting plate 52 to facilitate the subsequent placement of the sample box 2, so that the test tubes on the sample cells 3 can be preserved.

[0024] like Figure 1 and Figure 3 As shown, the upper surface of the adjustment plate 53 is symmetrically provided with positioning rods 531, and the lower surface of the sample box 2 is provided with positioning holes that are compatible with the positioning rods 531. This setting utilizes the positioning rods 531 to be embedded in the positioning holes to facilitate the positioning and installation of the sample box 2.

[0025] like Figure 2 As shown, a sealing gasket 43 is further provided on the lower surface of the compression plate 4, and a test tube for storing a DNA sample is embedded in the placement hole 31. The lower surface of the sealing gasket 43 contacts the upper end of the test tube. This arrangement utilizes the sealing gasket 43 on the lower surface of the compression plate 4 to ensure the sealing of the test tube, thereby preventing leakage of the test tube and affecting subsequent storage.

[0026] like Figure 4As shown, a spring 44 is fixed to the inner end of the fixing rod 42, and the upper end of the spring 44 is fixed to the lower end of the lifting rod 41. This arrangement utilizes the spring 44 to deform after the clamping plate 4 is pulled, and after the test tube is placed, the clamping plate 4 is released to allow the spring 44 to restore its deformation, and then the test tube can be clamped by the clamping plate 4 to ensure the stability of the test tube.

[0027] The working principle of the present invention is as follows: when the device for classifying and storing DNA samples in a low-temperature refrigerator is used, the DNA sample tube to be classified and stored is first placed in the placement hole 31 opened on the sample cell 3. When placing, the pressing plate 4 can be pulled upward to cause the spring 44 inside the fixing rod 42 to be deformed by tension. At this time, the lower end of the test tube storing the DNA sample can be inserted into the placement hole 31. After placement, the pressing plate 4 can be released to allow the spring 44 to recover its deformation, thereby allowing the pressing plate 4 to move downward to the D The NA sample test tube is pressed to ensure its stability, and at the same time, the limiting rod on one side of the positioning plate 51 is embedded into the inside of the limiting hole 54, so that the positioning plate 51 can be installed. After installation, the adjustment plate 53 is slid on the outside of the connecting plate 52 according to the size of the sample box 2, and then the position of the connecting plate 52 can be adjusted. After adjustment, the sample box 2 can be placed inside the freezer 1, and the positioning rod 531 is embedded in the positioning hole opened on the lower surface of the sample box 2, thereby ensuring the stability of the sample box 2, so as to facilitate the preservation of the test tube of the DNA sample.

[0028] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A device for classifying and storing DNA samples in a low-temperature refrigerator, characterized in that: include: A freezer (1) and a door (11) hinged on the front surface of the freezer (1); a positioning mechanism (5) is symmetrically arranged on the inner side of the freezer (1); the positioning mechanism (5) includes a positioning plate (51) clamped on the freezer (1); a connecting plate (52) is fixedly installed on the upper surface of the positioning plate (51); an adjusting plate (53) is slidably installed on the outer side of the connecting plate (52); a sample box (2) is arranged on the upper surface of the adjusting plate (53); a placement groove is provided on the upper surface of the sample box (2); a sample cell (3) is embedded and installed in the interior of the placement groove; a placement hole (31) is provided on the upper surface of the sample cell (3); a fixing rod (42) is also symmetrically arranged on the upper surface of the sample box (2); a lifting rod (41) is provided through the upper end of the fixing rod (42); and a pressing plate (4) is connected to the upper end of the lifting rod (41).

2. The device for classifying and storing DNA samples in a low-temperature refrigerator according to claim 1, characterized in that: A limiting rod is symmetrically provided on one side of the positioning plate (51), and a limiting hole (54) engaging with the limiting rod is provided on the inner side of the freezing box (1).

3. The device for classifying and storing DNA samples in a low-temperature refrigerator according to claim 1, characterized in that: The positioning plates (51) and the connecting plates (52) are arranged in an L-shape, and at least two groups of positioning plates (51) are symmetrically arranged on the inner side of the freezing box (1).

4. The device for classifying and storing DNA samples in a low-temperature refrigerator according to claim 1, characterized in that: Positioning rods (531) are symmetrically provided on the upper surface of the adjustment plate (53), and positioning holes adapted to the positioning rods (531) are provided on the lower surface of the sample box (2).

5. The device for classifying and storing DNA samples in a low-temperature refrigerator according to claim 1, characterized in that: The lower surface of the pressing plate (4) is further provided with a sealing gasket (43), and a test tube for storing a DNA sample is embedded in the interior of the placement hole (31), and the lower surface of the sealing gasket (43) contacts the upper end of the test tube.

6. The device for classifying and storing DNA samples in a low-temperature refrigerator according to claim 1, characterized in that: A spring (44) is fixed to the inner end of the fixing rod (42), and the upper end of the spring (44) is fixed to the lower end of the lifting rod (41).

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