CN217156438U - Automatic sampling device of gas chromatograph - Google Patents

Abstract

The utility model discloses a gas chromatograph's automatic sampling device, including the sampling box, be equipped with sampling mechanism in the sampling box, sampling mechanism includes the air extractor, the end intercommunication of giving vent to anger of air extractor is equipped with the outlet duct, the inlet end intercommunication of air extractor is equipped with fixed pipe, the outside cover of fixed pipe is equipped with removes the pipe, the upper end intercommunication of removing the pipe is equipped with the cross, the mouth of pipe of cross all is equipped with the suction hood, be equipped with in the sampling box and be used for the drive to remove the actuating mechanism that the pipe reciprocated. The utility model discloses can extract the gas sample in equidirectional and not co-altitude range to guarantee the abundant degree of gas sample, improve the accurate degree of experimental data, make experimental data more representative.

Description

Automatic sampling device of gas chromatograph

Technical Field

The utility model relates to a gas chromatograph technical field especially relates to a gas chromatograph's automatic sampling device.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by using a chromatographic separation technology and a detection technology, and when the gas chromatograph is used for analyzing and processing gas, the gas needs to be sampled.

In the conventional gas chromatograph, when gas sampling is performed, a pipeline for gas inlet is generally fixed, only gas in the same range or the same area can be extracted, and a gas sample is too single, so that data analyzed by the gas is not abundant enough, unrepresentative and accidental, and therefore, in order to solve the problems, an automatic sampling device of the gas chromatograph needs to be designed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an automatic sampling device of a gas chromatograph.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a gas chromatograph's automatic sampling device, includes the sampling box, be equipped with sampling mechanism in the sampling box, sampling mechanism includes the air exhauster, the end intercommunication of giving vent to anger of air exhauster is equipped with the outlet duct, the inlet end intercommunication of air exhauster is equipped with fixed pipe, the outside cover of fixed pipe is equipped with removes the pipe, the upper end intercommunication of removing the pipe is equipped with the cross, the mouth of pipe of cross all is equipped with the suction hood, be equipped with in the sampling box and be used for the drive to remove the actuating mechanism that the pipe reciprocated.

Preferably, actuating mechanism includes the motor of fixed connection bottom in the sampling box, the output shaft fixedly connected with reciprocal lead screw of motor, reciprocal lead screw lateral wall threaded connection has the movable plate, the removal pipe runs through the movable plate lateral wall.

Preferably, the movable pipe is fixedly connected with the movable plate, and a sealing ring is arranged at a penetrating position of the movable pipe and the fixed pipe.

Preferably, a plurality of the air inlet cover inner walls are fixedly connected with dust screens.

Preferably, the lateral wall fixedly connected with installing frame on the sampling case, the equal fixedly connected with brush of circumference inner wall of installing frame.

Preferably, the plurality of brushes are respectively arranged right opposite to the plurality of air inlet covers and are respectively contacted with the side walls of the plurality of dust screens.

The utility model discloses following beneficial effect has:

1. the cross pipe is communicated and arranged at the upper end of the moving pipe, so that gas samples in different directions can be extracted, the richness of the gas samples is ensured, the accuracy of experimental data is improved, and the experimental data is more representative;

2. the driving mechanism of the utility model drives the reciprocating screw rod to rotate through the motor, further drives the moving plate and the moving pipe to move up and down, drives the cross pipe to move up and down, can extract gas samples in different height ranges, further enlarges the sampling range of the device, and improves the accuracy of the experiment;

3. the dust screen is arranged in the plurality of air inlet covers, so that impurities such as dust in gas can be prevented from being sucked into the device during sampling, the device is prevented from being damaged, the device is protected, and the service life of the device is prolonged;

4. the utility model discloses be equipped with the installing frame to be equipped with the brush hair on the installing frame, when the cross reciprocated, the dust screen process brush hair, the brush hair can fall the dust brush of dust screen surface adhesion, thereby guarantees the air permeability of dust screen, guarantees that gas can enter into in the cross smoothly.

Drawings

Fig. 1 is a schematic structural diagram of an automatic sampling device of a gas chromatograph according to the present invention;

fig. 2 is an enlarged view of a structure at a position a of the automatic sampling device of the gas chromatograph according to the present invention.

In the figure: the device comprises a sampling box 1, a motor 2, a moving plate 3, a reciprocating screw rod 4, a moving pipe 5, a fixed pipe 6, an air pump 7, an air outlet pipe 8, an installation frame 9, a cross pipe 10, a hair brush 11, an air inlet cover 12 and a dust screen 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, an automatic sampling device of a gas chromatograph comprises a sampling box 1, a sampling mechanism is arranged in the sampling box 1, the sampling mechanism comprises an air pump 7, an air outlet end of the air pump 7 is communicated with an air outlet pipe 8, the air outlet pipe 8 is communicated with a gas treatment device of the gas chromatograph, an air inlet end of the air pump 7 is communicated with a fixed pipe 6, the outer side of the fixed pipe 6 is sleeved with a movable pipe 5, a sealing ring is arranged at the penetrating position of the movable pipe 5 and the fixed pipe 6, the lower end of the movable pipe 5 is sealed, the fixed pipe 6 penetrates through the lower side wall of the movable pipe 5, the upper end of the movable pipe 5 is communicated with a cross pipe 10, the cross section of the cross pipe 10 is in a cross-shaped structure, air inlet covers 12 are arranged at pipe openings of the cross pipe 10, dustproof nets 13 are fixedly connected to the inner walls of the air inlet covers 12, and can prevent the air pump 7 from sucking impurities such as dust into the device to damage the device when extracting gas, the device is protected, and the service life of the device is prolonged.

Be equipped with in the sampling box 1 and be used for driving the actuating mechanism that removes 5 and reciprocate, actuating mechanism includes motor 2 of fixed connection bottom in sampling box 1, and motor 2's output shaft fixedly connected with is reciprocal lead screw 4, and 4 lateral walls threaded connection of reciprocal lead screw have a movable plate 3, and removal pipe 5 runs through 3 lateral walls of movable plate, removes 5 and 3 fixed connection of movable plate.

Sampling box 1 side wall fixedly connected with installing frame 9, the equal fixedly connected with brush 11 of the circumference inner wall of installing frame 9, a plurality of brushes 11 are just setting up a plurality of air inlet covers 12 respectively, a plurality of brushes 11 respectively with a plurality of dust screens 13 lateral wall contact.

The utility model discloses its functional principle is explained to following mode of operation of accessible: when sampling gas, the air pump 7 may be activated to suck gas from the plurality of air inlet hoods 12 into the cross 10, and then the gas may be introduced into the gas processing apparatus of the gas chromatograph through the moving pipe 5, the fixed pipe 6, and the air outlet pipe 8 in this order.

When the gas sampling, can start motor 2, motor 2 drives reciprocal lead screw 4 and rotates, and then drives movable plate 3 and reciprocates to drive movable pipe 5 and reciprocate, drive cross 10 and a plurality of cover 12 that admits air and reciprocate, can extract the not gas sample of co-altitude, thereby guarantee the accuracy nature of gas treatment, prevent that the sample data of extraction gas is too single.

When the cross pipe 10 moves to the lower end, the brush 11 can brush off dust attached to the dust screen 13 when passing through the dust screen 13, so that the air permeability of the dust screen 13 is ensured, and gas can smoothly enter the cross pipe 10.

The above, only be the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any technical solution and the utility model thereof should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a gas chromatograph's automatic sampling device, includes sampling box (1), its characterized in that: be equipped with sampling mechanism in sampling box (1), sampling mechanism includes air extractor (7), the end intercommunication of giving vent to anger of air extractor (7) is equipped with outlet duct (8), the inlet end intercommunication of air extractor (7) is equipped with fixed pipe (6), the outside cover of fixed pipe (6) is equipped with removes pipe (5), the upper end intercommunication that removes pipe (5) is equipped with cross (10), the mouth of pipe of cross (10) all is equipped with suction hood (12), be equipped with in sampling box (1) and be used for the drive to remove the actuating mechanism that pipe (5) reciprocated.

2. The automatic sampling device of a gas chromatograph of claim 1, wherein: the drive mechanism comprises a motor (2) fixedly connected to the bottom in the sampling box (1), an output shaft of the motor (2) is fixedly connected with a reciprocating lead screw (4), a movable plate (3) is connected to the side wall of the reciprocating lead screw (4) in a threaded manner, and a movable pipe (5) penetrates through the side wall of the movable plate (3).

3. The automatic sampling device of a gas chromatograph of claim 2, wherein: the movable pipe (5) is fixedly connected with the movable plate (3), and a sealing ring is arranged at the penetrating position of the movable pipe (5) and the fixed pipe (6).

4. The automatic sampling device of a gas chromatograph of claim 1, wherein: the inner walls of the air inlet covers (12) are fixedly connected with dust screens (13).

5. The automatic sampling device of a gas chromatograph of claim 4, wherein: the sampler case (1) goes up lateral wall fixedly connected with installing frame (9), the equal fixedly connected with brush (11) of circumference inner wall of installing frame (9).

6. The automatic sampling device of a gas chromatograph of claim 5, wherein: the plurality of brushes (11) are respectively arranged right opposite to the plurality of air inlet covers (12), and the plurality of brushes (11) are respectively contacted with the side walls of the plurality of dust screens (13).

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