CN203324234U - Chromatography manual sample injection device - Google Patents

Abstract

The utility model specifically discloses a chromatographic manual sampling device, which includes a syringe, the syringe is arranged in a positioning slot, and a clamping plate is arranged at the rear end of a piston core rod of the syringe. The rear end of the piston core rod is arranged in the groove of the clamping plate, and two screws capable of sliding back and forth along the groove are arranged in the groove, and the screws are arranged at both ends of the piston core rod. The cardboard is a glass cardboard. The beneficial effect of the utility model is that it can greatly reduce the situation of sample injection slipping, and can adjust the position of the clamping plate according to the condition of the analyst's fingers, so as to increase the comfort during sample injection and reduce mistakes.

Description

A chromatographic manual sampling device

technical field

The utility model relates to a manual sampling device for chromatographic analysis.

Background technique

At present, the commonly used transformer chromatographic sampler is a syringe with a positioning card slot (as shown in Figure 1). This positioning card slot can change the injection volume (0ml-1.0ml) at will, and can ensure that each injection The sample volume is the same volume, but because the rear caliper of the syringe covers most of the plunger rod of the syringe because of the need to fix the scale, only a small part can be used for sample injection, because the sample needs to be loaded Injection under the pressure of air, coupled with the influence of finger sweat, there is a high probability that the hands will slip during sample injection, resulting in sample injection failure. The failure of sampling will lead to three results. First, the remaining amount of gas available for analysis may not be enough, and the analysis cannot be performed again, which will restart the entire experiment from sampling, which will greatly increase the workload; second, gas chromatography analysis of transformer oil The analysis cycle is generally between 9-15 minutes, depending on the conditions of the instrument and the experimental conditions. If the sample injection fails, the next sample analysis cannot be carried out immediately. It must run a cycle before it can be performed again, which is a waste of time. Third, if there are samples that need to be analyzed urgently, it will seriously affect the progress of installation and commissioning of on-site equipment. Therefore, it is necessary to improve the injector and greatly reduce the sampling errors.

Utility model content

In order to solve the shortcomings of the prior art, the utility model specifically discloses a chromatographic manual sampling device.

The technical scheme that the utility model adopts is as follows:

A chromatographic manual sampling device includes a syringe, the syringe is arranged in a positioning slot, and a clamping plate is provided at the rear end of the plunger rod of the syringe.

The rear end of the piston core rod is arranged in the groove of the clamping plate, and two screws capable of sliding back and forth along the groove are arranged in the groove, and the screws are arranged at both ends of the piston core rod.

The card board is a plexiglass card board.

One end of the clamping plate is provided with anti-skid lines.

The beneficial effect of the utility model is that it can greatly reduce the situation of sample injection slipping, and can adjust the position of the clamping plate according to the condition of the analyst's fingers, so as to increase the comfort during sample injection and reduce mistakes.

Description of drawings

Fig. 1 Structural diagram of the original manual injector;

Fig. 2 is the front view of the utility model;

Fig. 3 is the right side view of the utility model;

In the figure: 1 syringe, 2 piston core rod, 3 positioning slot, 4 clamping plate, 5 groove, 6 rear caliper, 7 screw, 8 anti-skid pattern.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The utility model includes a syringe 1, the syringe 1 is arranged in a positioning slot 3, and a clamping plate 4 is provided at the rear end of the piston rod 2 of the syringe 1. The rear end of the piston core rod 2 is set in the groove 5 of the clamping plate 4, and two screws 7 which can slide back and forth along the groove are arranged in the groove 5, and the screws 7 are arranged on the piston core rod 2 both ends. Card board 4 is a glass card board. A rear caliper 6 is provided at the rear end of the syringe 1 . Carry out anti-slip pattern 8 at one end of clamping plate 4.

When using the device of the utility model to inject samples, the hand feeling is good, and the failure of sample injection due to slipping of fingers does not occur, which greatly reduces the error rate of sample analysis.

Claims (3)

1. a chromatogram hand sampling device, comprise syringe, and described syringe is arranged in locating groove, it is characterized in that: the piston core rod rear end of described syringe is provided with a clamp.

2. sampling device as claimed in claim 1, it is characterized in that: the rear end of described piston core bar is located in the groove of clamp, and is provided with the screw that two energy slidably reciprocate along groove in groove, and described screw is located at the two ends of piston core bar.

3. sampling device as claimed in claim 1, it is characterized in that: described clamp is the organic glass clamp.

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