Nitrogen blowing needle row and sample holder

Abstract

The utility model discloses a nitrogen blowing needle row and a sample rack, and belongs to the technical field of chemical experiment devices. Comprising a blowing needle and a sample tube rack, the blowing needles are arranged below the needle rows in two rows and eight rows, the needle rows are arranged below the mounting plate in four rows, the mounting plate is connected with the lifting machine through the mounting frame, lifting handles are arranged on the two sides of each sample tube frame, and sample tubes of one sample tube frame correspond to the blowing needles respectively. The sample tubes of the other sample tube rack respectively correspond to the two blowing needles in the same column; the lifting machine can drive the blowing needles to ascend and descend to blow air to sample tubes of different sample tube frames, when the sample tubes smaller than 50 ml are used, each blowing needle can be aligned with one sample tube to blow air, when the sample tubes larger than 50 ml are used, the two blowing needles in the same row of the same needle row can be aligned with one sample tube to blow air, the needle row does not need to be replaced, the two blowing needles blow air at the same time, and the blowing efficiency is improved. Concentration of large-volume sample liquid can be accelerated, concentration efficiency is improved, and the sample tube rack can be easily taken out from a water bath by being provided with a bilateral handle.

Description

Technical Field

[0001] The utility model provides a nitrogen blowing needle row and a sample rack, belonging to the technical field of chemical experimental devices. Background Art

[0002] Nitrogen blow concentration technology is a fast, efficient and relatively non-destructive method for sample concentration. The principle of nitrogen blow concentration method is to place the sample tube on a sample tube rack, immerse the sample tube in a water bath to heat it, and use a needle to introduce gas to achieve the purpose of rapid concentration.

[0003] However, at present, most fully automatic nitrogen blow-through concentrators are limited to the use of sample tubes of a single specification. When actual experiments are carried out, sample tubes of different specifications are often encountered. At this time, it is necessary to replace sample tube racks and blow-through needle rows of different specifications. The replacement process is time-consuming and very inconvenient to use. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the specifications of test tubes that can be adapted to the current fully automatic nitrogen blowing concentrator are limited, and test tubes of specified specifications must be used. When test tubes of different specifications are used, the entire set of needle arrays and sample racks need to be replaced.

[0005] In order to solve the above problems, the utility model proposes a technical solution: a nitrogen blowing needle row and sample rack, including blowing needles and a sample tube rack; the blowing needles are arranged in two columns and eight rows below the needle row, and the needle row is arranged in four rows below the mounting plate, and the mounting plate is connected to the elevator through the mounting rack. The sample tube rack is provided with two handles on both sides, and the sample tubes of one sample tube rack correspond to a plurality of blowing needles respectively, and the sample tubes of the other sample tube rack correspond to two blowing needles in the same column respectively.

[0006] As an improvement, the two blow pins in the same row are supplied with air through an air inlet on the pin row;

[0007] As an improvement, the pin strip is mounted to the underside of the mounting plate using mounting screws at both ends;

[0008] As an improvement, a space is left between two adjacent needle rows;

[0009] As an improvement, the elevator is located outside the sample tube rack and the needle row.

[0010] Beneficial effects of the utility model:

[0011] By setting several blow needle rules below the needle row, setting several needle rows below the mounting plate, enabling the elevator to drive the blow needle to lift, thereby enabling the sample tube of different sample tube racks to be blown, when using a sample tube less than 50ml, each blow needle can be aligned with a sample tube to blow, when using a sample tube greater than 50ml, two blow needles in the same needle row and the same column can be aligned with a sample tube to blow, without changing the needle row, and the two blow needles blow at the same time, which can accelerate the concentration of large volume sample liquid and improve the concentration efficiency, and the sample tube rack is equipped with double side handles and can be easily taken out from the water bath. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Structure diagram of the nitrogen blow needle row and the sample rack Figure 1 .

[0013] Figure 2 Structure diagram of the nitrogen blow needle row and the sample rack Figure 2 .

[0014] 1, blow needle; 2, sample tube rack; 201, handle; 202, sample tube; 3, needle row; 301, mounting screw; 4, mounting plate; 5, mounting frame; 6, elevator. DETAILED DESCRIPTION

[0015] The utility model is further explained in connection with the drawings.

[0016] According to Figure 1-2: The utility model provides a nitrogen blowing needle row and sample rack: comprising blowing needles 1 and sample tube rack 2; the blowing needles 1 are arranged in two columns and eight rows under the needle row 3, the needle row 3 is arranged in four rows under the mounting plate 4, the mounting plate 4 is connected to the elevator 6 through the mounting rack 5, the sample tube rack 2 is provided with two handles 201 on both sides, the sample tubes 202 of one sample tube rack 2 correspond to a plurality of blowing needles 1 respectively, and the sample tubes 202 of the other sample tube rack 2 correspond to two blowing needles 1 in the same row; the two blowing needles 1 in the same row are supplied with air through an air inlet on the needle row 3; the needle row 3 is installed under the mounting plate 4 by means of mounting screws 301 at both ends; a space is left between two adjacent needle rows 3; the elevator 6 is in the sample The outside of the quality control rack 2 and the needle row 3; by regularly arranging several blow needles 1 under the needle row 3, and arranging several needle rows 3 under the mounting plate 4, the elevator 5 can drive the blow needles 1 to rise and fall, so that the sample tubes 202 of different sample tube racks 2 can be blown. When using sample tubes 202 less than 50ml, each blow needle 1 can be aimed at one sample tube 202 for blowing. When using sample tubes 202 larger than 50ml, two blow needles 1 in the same column of the same needle row 3 can be aimed at one sample tube 202 for blowing. There is no need to replace the needle row 3, and the two blow needles 1 blow at the same time, which can accelerate the concentration of large-volume sample liquid and improve the concentration efficiency. The sample tube rack 2 is equipped with double-sided handles 201 and can be easily removed from the water bath.

[0017] The principle of the present invention is as follows: when in use, first place a suitable sample tube rack 2 in a water bath, then fix the elevator 6 to the outside of the water bath, and when in use, lower the height of the mounting plate 4, the needle row 3, and the blow needle 1 by the elevator 6, so that the blow needle 1 enters the sample tube 202 of the sample tube rack 2 to blow air. When using a sample tube 202 less than 50ml, each blow needle 1 is aligned with one sample tube 202 for blowing air. When using a sample tube 202 larger than 50ml, two blow needles 1 in the same column of the same needle row 3 are aligned with one sample tube 202 for blowing air. In this way, there is no need to replace the needle row 3, and the two blow needles 1 blow air at the same time, which can accelerate the concentration of large-volume sample liquid and improve the concentration efficiency. The sample tube rack 2 is equipped with a double-sided handle 201 and can be easily taken out of the water bath.

[0018] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.

Claims

1. A nitrogen blowing needle array and sample rack, comprising a blowing needle (1) and a sample tube rack (2); characterized in that: The blow needles (1) are arranged in two columns and eight rows below a needle row (3), and the needle row (3) is arranged in four rows below a mounting plate (4). The mounting plate (4) is connected to a lift (6) via a mounting frame (5). The sample tube rack (2) is provided with two handles (201) on both sides. The sample tubes (202) of one of the sample tube racks (2) correspond to a plurality of blow needles (1), and the sample tubes (202) of the other sample tube rack (2) correspond to two blow needles (1) in the same column.

2. A nitrogen blow needle row and sample holder according to claim 1, characterized in that: The two blowing needles (1) in the same row are supplied with air through an air inlet on the needle row (3).

3. The nitrogen blowing needle row and sample holder according to claim 1, characterized in that: The needle row (3) is mounted below the mounting plate (4) via mounting screws (301) at both ends.

4. The nitrogen blowing needle row and sample holder according to claim 1, characterized in that: There is space between two adjacent needle rows (3).

5. The nitrogen blowing needle row and sample holder according to claim 1, characterized in that: The elevator (6) is located outside the sample tube rack (2) and the needle row (3).

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