Floating centrifuge tube rack for water bath heating

Abstract

The utility model discloses a floating centrifuge tube rack for water bath heating, which comprises a centrifuge tube rack body, a plurality of centrifuge tube holes are arranged on the centrifuge tube rack body, and a floating device detachably connected with the centrifuge tube rack body is arranged on the centrifuge tube rack body; and a handheld short rod is arranged on the centrifuge tube rack body. According to the floating centrifuge tube rack for water bath heating, the floating device and the plastic centrifuge tube rack body are detachably combined together, so that when a sample in the centrifuge tube is heated in a water bath, the floating centrifuge tube rack is used for fixing the centrifuge tube and ensuring the heating effect of the sample, and the phenomenon that the tube cover is jacked open by gas expansion when the whole or most of the centrifuge tube is heated is avoided; and sample and environment pollution is caused.

Description

Technical Field

[0001] The utility model relates to a floating centrifuge tube rack for water bath heating, belonging to the technical field of sample heating experimental equipment. Background Art

[0002] Heating samples is a common experimental method in laboratories. Currently, there are two methods: water bath heating and metal bath heating. When using water bath heating, a foam water float or a plastic bracket is the main way to fix centrifuge tubes, but it has the following main disadvantages: The foam water float is prone to aging and deformation after repeated heating, and the centrifuge tube cannot be firmly fixed, which is likely to cause sample and environmental pollution; Since the centrifuge tube needs to be fixed in the foam water float with more than 1 / 2 of its length to be firm, this easily leads to a large volume of the centrifuge tube when heated, and the gas in the tube expands to push open the tube cap. Especially when the volume of the sample in the tube is small, high-temperature heating is extremely likely to occur, resulting in sample contamination and external environmental pollution. The existing plastic bracket has a fixed bottom height and is not suitable for the liquid level with variable height in the water bath. Each time it is used, water needs to be added or poured out to adjust the liquid level, which is time-consuming and laborious. The aperture of the plastic bracket is relatively large, and the centrifuge tube is immersed more underwater, which will also cause the gas in the tube to expand and push open the tube cap.

[0003] The metal bath has the same problem. The placement hole of the centrifuge tube in the metal bath has a fixed depth, and when heated at high temperature, it is also likely to cause the gas in the tube to expand and push open the tube cap, resulting in sample and environmental pollution. Therefore, a water bath heating fixing device that can not only ensure the heating effect of the sample but also ensure that the tube cap of the centrifuge tube will not be pushed open due to heating is needed. Summary of the Invention

[0004] The technical problem to be solved by the utility model is: when heating a sample, how to ensure both the heating effect of the sample and that the tube cap of the centrifuge tube will not be pushed open due to heating.

[0005] To solve the above technical problem, the technical solution of the utility model is to provide a floating centrifuge tube rack for water bath heating, which is characterized in that it includes a centrifuge tube rack body, a plurality of centrifuge tube holes are provided on the centrifuge tube rack body, and a floating device detachably connected to the centrifuge tube rack body is provided on the centrifuge tube rack body; a handheld short rod is provided on the centrifuge tube rack body.

[0006] Preferably, floating devices are provided on at least two opposite sides of the centrifuge tube rack body; a handheld short rod is provided on at least one side of the centrifuge tube rack body.

[0007] Preferably, a clamping groove is provided at the position where the centrifuge tube rack body is connected to the floating device, and a clamping block matching the clamping groove is provided on the floating device.

[0008] Preferably, the clamping groove is of a concave trapezoidal structure; the clamping block is a trapezoidal protrusion.

[0009] Preferably, the centrifuge tube rack body is a plastic bracket.

[0010] Preferably, the centrifuge tube rack body is of a rectangular structure.

[0011] Preferably, the floating device is a foam board / bar with good buoyancy.

[0012] Preferably, the foam board / bar is of a square or cylindrical structure.

[0013] Preferably, the buoyancy of the floating device can make the heated volume of the sample contained in a centrifuge tube less than 1 / 3 of the centrifuge tube volume less than 1 / 2 when heated in a water bath.

[0014] The present utility model provides a floating centrifuge tube rack for water bath heating, which detachably combines a floating device and a plastic centrifuge tube rack body, and is used to fix centrifuge tubes when heating samples in centrifuge tubes in a water bath to ensure the heating effect of the samples. When the centrifuge tube contains a small amount of samples, it can avoid the situation that when the whole or most of the centrifuge tubes are heated, the gas expands and pushes open the tube cap, resulting in sample and environmental pollution.

[0015] Compared with the prior art, the present utility model has at least one of the following advantages:

[0016] ① High throughput: It can hold up to 96 0.6 mL centrifuge tubes or 50 1.5 mL centrifuge tubes. It has a higher throughput than the traditional foam water float with 12 - 20 holes or the plastic bracket with 16 - 20 holes, ensuring the heating efficiency of a large number of samples and reducing the heating treatment differences between batches.

[0017] ② Safe and easy to take: It is designed with a short handle for easy taking without touching the centrifuge tubes.

[0018] ③ Durable. The plastic plate is made of heat-resistant material and can withstand large temperature changes; the buoyant foam bar is made of hard material with large buoyancy and is not easily worn. Description of the Drawings

[0019] Figure 1 is a top view of a floating centrifuge tube rack for water bath heating;

[0020] Figure 2 is a top view of the centrifuge tube rack body;

[0021] Figure 3 is a plan view of the centrifuge tube rack body;

[0022] Figure 4 is a side view of the centrifuge tube rack body;

[0023] Figure 5 is a plan view of the buoyant foam bar;

[0024] Figure 6Side view of the buoyancy foam strip. Detailed implementation mode

[0025] To make the present utility model more obvious and understandable, the preferred embodiments are described in detail below in conjunction with the accompanying drawings.

[0026] The present utility model provides a floating centrifuge tube rack for water bath heating, as Figures 1-6 shown, which includes a centrifuge tube rack body 1. A plurality of centrifuge tube holes 11 for placing centrifuge tubes and communicating with the external water bath are provided on the centrifuge tube rack body 1. A floating device is provided on the centrifuge tube rack body 1. A card slot 12 is provided at the position on the centrifuge tube rack body 1 connected to the floating device. A clamping block 21 is provided on the floating device and is matched and connected with the card slot 12. A handheld short rod 3 is provided on one side of the centrifuge tube rack body 1.

[0027] In this embodiment, card slots 12 are provided on the opposite sides or around the centrifuge tube rack body 1, and the card slots 12 are of a concave trapezoidal structure. The clamping block 21 is a trapezoidal protrusion. The centrifuge tube rack body 1 is a plastic plate with dimensions of 5 cm to 15 cm in length, 5 cm to 15 cm in width, and 0.5 cm to 0.8 cm in thickness, that is, the centrifuge tube rack body 1 is a plastic bracket. 4 to 12 rows of round holes (i.e., centrifuge tube holes 11) with 8 to 12 round holes in each row are provided on the centrifuge tube rack body 1, and the diameter of the round holes is 0.8 cm to 1 cm. The plastic plate is of a rectangular structure. On both sides of the short side of the plastic plate (i.e., the centrifuge tube rack body 1), there is a cylindrical short rod (i.e., the handheld short rod 3) with a length of 2 cm to 4 cm and a diameter of 0.5 cm to 0.8 cm, which is used to avoid scalding when putting into or taking out from the water bath pot. On both sides of the long side of the plastic plate, there is a concave trapezoidal card slot 12 for fixing the floating device 2 with a trapezoidal protrusion. The floating device 2 is a foam board / strip with good buoyancy. The foam board / strip is square or cylindrical, and has a trapezoidal protrusion on one side, and can be clamped into the card slots 12 on both sides of the plastic plate to play a role in providing buoyancy.

[0028] According to the principle of aerodynamics, when the sample volume in a commonly used 0.6 mL or 1.5 mL centrifuge tube in the laboratory is less than 1 / 3 and the volume of the centrifuge tube heated is greater than 1 / 2, the gas above the sample expands due to high-temperature heating, and the pressure is likely to push the tube cap open. The present utility model controls the aperture of the centrifuge tube holes in the centrifuge tube rack, so that the heated volume of the sample with a volume less than 1 / 3 of the centrifuge tube volume during heating is less than 1 / 2, effectively avoiding the tube cap being pushed open by the high-temperature expansion of the gas in the tube, preventing the sample from being contaminated and polluting the environment.

[0029] Taking a plastic plate with a specification of 11.2 cm × 7.2 cm × 0.8 cm as an example, 96 holes with a diameter of 0.8 cm can be drilled, arranged in 12 rows and 8 columns. On both sides of the long edge of the plastic plate, there is a concave trapezoidal card slot respectively, which is used to fix the foam strip with trapezoidal protrusions. In the middle of both sides of the short edge of the plastic plate, there is a cylindrical short rod with a height of 2 cm to 4 cm and a diameter of 0.5 cm to 0.8 cm respectively.

[0030] The using process of the utility model is as follows:

[0031] Place the 0.6 mL or 1.5 mL centrifuge tube containing the sample in the centrifuge tube hole 11 of the floating centrifuge tube rack (it is recommended to place symmetrically). Hold the handheld short rod 3 on one side or both sides, and put the centrifuge tube rack into the water bath. After heating is completed, hold the handheld short rod 3 on one side or both sides, take out the centrifuge tube rack, and then take out the centrifuge tube.

Claims

1. A floating centrifuge tube rack for water bath heating, characterized in that: The centrifuge tube rack body (1) comprises a centrifuge tube rack body (1), a plurality of centrifuge tube holes (11) are provided on the centrifuge tube rack body (1), a floating device detachably connected thereto is provided on the centrifuge tube rack body (1); and a hand-held short rod (3) is provided on the centrifuge tube rack body (1).

2. A floating centrifuge tube rack for water bath heating as claimed in claim 1, characterized in that: At least two sides of the centrifuge tube rack body (1) and two opposite sides are provided with floating devices; at least one side of the centrifuge tube rack body (1) is provided with a handheld short rod (3).

3. A floating centrifuge tube rack for water bath heating as claimed in claim 1 or 2, characterized in that: A clamping groove (12) is provided on the centrifuge tube rack body (1) at a position connected to the floating device, and a clamping block (21) matching and connected to the clamping groove (12) is provided on the floating device.

4. A floating centrifuge tube rack for water bath heating as claimed in claim 3, characterized in that: The clamping slot (12) is a concave trapezoidal structure; the clamping block (21) is a trapezoidal protrusion.

5. A floating centrifuge tube rack for water bath heating as claimed in claim 1, characterized in that: The centrifuge tube rack body (1) is a plastic rack.

6. A floating centrifuge tube rack for water bath heating as claimed in claim 5, characterized in that: The centrifuge tube rack body (1) is a rectangular structure.

7. A floating centrifuge tube rack for water bath heating as claimed in claim 1, characterized in that: The floating device (2) is a foam board / strip with good buoyancy.

8. A floating centrifuge tube rack for water bath heating as claimed in claim 7, characterized in that: The foam board / strip is a square or cylindrical structure.

9. A floating centrifuge tube rack for water bath heating as claimed in claim 1, 7 or 8, characterized in that: The buoyancy of the floating device (2) can enable the heated volume of a sample containing less than 1 / 3 of the volume of a centrifuge tube to be less than 1 / 2 when heated in a water bath.

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