Sample tube with moisture-proof function

Abstract

The utility model discloses a sample tube with a moisture-proof function, which comprises a sample tube main body and a sample tube cover, and the sample tube main body is in threaded connection with the sample tube cover; a moisture-proof water absorption layer is arranged in the sample tube main body, and a sealing gasket is arranged on the sample tube cover. The moisture-proof water absorption layer comprises a breathable film and a water absorption layer, the upper end of the breathable film is fixed on the inner wall of the sample tube main body, and the water absorption layer is arranged between the breathable film and the inner wall of the sample tube main body. The water absorption layer is made of calcium chloride. The breathable film is a polytetrafluoroethylene (PTFE) filter film. According to the device, moisture in air can be absorbed through the internal moisture-proof water absorption layer, dryness in the sample tube main body is ensured, and a sample is ensured not to absorb moisture; the device adopts a double-layer structure, and the sample tube main body is made of a plastic material, so that the sample tube is not easy to damage during transportation; and the use is also convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of sample tubes, in particular to a sample tube with a moisture-proof function. Background Art

[0002] During the sample inspection process, some solids that are easy to absorb moisture or experimental samples that need to be kept dry for a long time (solid samples) should be placed in dry containers for transportation to prevent the samples from absorbing moisture in the air during transportation.

[0003] Currently, there are no sample tubes with moisture-proof function on the market; when solid samples that are easy to absorb moisture need to be sent for inspection, their storage method is relatively cumbersome; and some containers such as vacuum dryers used in laboratories cannot be used for transportation; therefore, in order to solve the above problems, the utility model provides a sample tube with moisture-proof function. Utility Model Content

[0004] The purpose of the utility model is to provide a sample tube with moisture-proof function to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sample tube with moisture-proof function, comprising a sample tube body and a sample tube cover, wherein the sample tube body and the sample tube cover are threadedly connected; a moisture-proof and water-absorbing layer is provided inside the sample tube body, and a sealing gasket is provided on the sample tube cover.

[0006] Preferably, the moisture-proof water-absorbing layer comprises a breathable membrane and a water-absorbing layer, the upper end of the breathable membrane is fixed on the inner wall of the sample tube body, and the water-absorbing layer is arranged between the breathable membrane and the inner wall of the sample tube body.

[0007] Preferably, the water absorbing layer is made of calcium chloride.

[0008] Preferably, the breathable membrane is a polytetrafluoroethylene (PTFE) filter membrane.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The device can absorb moisture in the air through the internal moisture-proof and water-absorbing layer to ensure the dryness of the sample tube body and ensure that the sample will not absorb moisture; the device adopts a double-layer structure, and the sample tube body is made of plastic material, which is not easy to be damaged during transportation; it is also convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a front view of the utility model;

[0013] Figure 3 for Figure 2 AA section view.

[0014] In the figure: 1. sample tube body, 2. sample tube cover, 3. breathable membrane, 4. water absorption layer, 5. sealing gasket. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3 The utility model provides a technical solution: a sample tube with moisture-proof function, comprising a sample tube body 1 and a sample tube cover 2, wherein the sample tube body 1 and the sample tube cover 2 are threadedly connected.

[0017] In order to solve the problem of air entering the sample tube and causing the sample to absorb water, the device provides a moisture-proof and water-absorbing layer inside the sample tube body 1, and a sealing gasket 5 is provided on the sample tube cover 2; the sealing gasket 5 adopts an existing sealing gasket.

[0018] In order to better solve the problem of moisture inside the sample tube, the moisture-proof water-absorbing layer in the device includes a breathable membrane 3 and a water-absorbing layer 4. The upper end of the breathable membrane 3 is fixed on the inner wall of the sample tube body 1, and the water-absorbing layer 4 is arranged between the breathable membrane 3 and the inner wall of the sample tube body 1. When the sample tube body 1 is opened and the sample is placed, air will enter the sample tube body 1, and the moisture in the air is easily absorbed by the sample, causing the sample to deteriorate; at this time, the water-absorbing layer 4 can preferentially absorb the moisture in the air, so that the air in the sample tube body 1 is guaranteed to be dry. The water-absorbing layer 4 uses calcium chloride.

[0019] In order to avoid contact between the water-absorbing layer 4 and the sample, the air-permeable membrane 3 in the present device adopts a polytetrafluoroethylene (PTFE) filter membrane. The polytetrafluoroethylene (PTFE) filter membrane has excellent chemical stability and corrosion resistance, and the polytetrafluoroethylene (PTFE) filter membrane can prevent calcium chloride powder from passing through while allowing water molecules to pass through, thereby absorbing moisture in the sample tube body 1.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sample tube with moisture-proof function, comprising a sample tube body (1) and a sample tube cover (2), wherein the sample tube body (1) and the sample tube cover (2) are threadedly connected; characterized in that: A moisture-proof and water-absorbing layer is provided inside the sample tube body (1), and a sealing gasket (5) is provided on the sample tube cover (2).

2. The sample tube with moisture-proof function according to claim 1, characterized in that: The moisture-proof water-absorbing layer comprises a breathable membrane (3) and a water-absorbing layer (4), the upper end of the breathable membrane (3) is fixed on the inner wall of the sample tube body (1), and the water-absorbing layer (4) is arranged between the breathable membrane (3) and the inner wall of the sample tube body (1).

3. The sample tube with moisture-proof function according to claim 2, characterized in that: The air permeable membrane (3) is a polytetrafluoroethylene (PTFE) filter membrane.

4. The sample tube with moisture-proof function according to claim 2, characterized in that: The water absorbing layer (4) is made of calcium chloride.

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