CN211043259U - Sample gas circulation device for gas chromatograph - Google Patents

Abstract

The utility model discloses a gaseous circulation device of sample for gas chromatograph, including the chromatograph main part, the lateral wall fixedly connected with hydraulic telescoping rod of chromatograph main part, hydraulic telescoping rod runs through the lateral wall and the fixedly connected with block rubber of chromatograph main part, the lateral wall of block rubber offsets with the inner wall of chromatograph main part, hydraulic telescoping rod's lateral wall has been kept away from to the chromatograph main part has seted up the air inlet, the lateral wall sealing connection of chromatograph main part has the intake pipe that matches with the air inlet, be equipped with the valve in the intake pipe, the one end that the chromatograph main part was kept away from to the intake pipe is round platform shape setting, the equal fixedly connected with fixed block of upper and lower lateral wall of intake pipe, two the lateral wall of fixed block is through two extension spring fixedly connected with spacing rings. The utility model discloses can thoroughly discharge the gas in the chromatograph main part, convenient and practical also makes things convenient for the gas-supply pipe of centre gripping input chromatograph main part simultaneously, and is light convenient.

Description

Sample gas circulation device for gas chromatograph

Technical Field

The utility model relates to a gas chromatograph technical field especially relates to a sample gas circulation device for gas chromatograph.

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. The gas chromatograph is characterized in that gas is used as a mobile phase (carrier gas), when a sample enters an injector through a micro-injector, the sample is carried into a packed column or a capillary chromatographic column by the carrier gas, the components are repeatedly distributed between two phases under the flushing of the carrier gas to separate the components in the column due to the difference of distribution or adsorption coefficients of the components in the sample between the mobile phase (gas phase) and a fixed phase (liquid phase or solid phase) in the chromatographic column, then the components are sequentially detected according to the physicochemical characteristics of the components by a detector connected behind the column, and the gas is conveyed into the gas chromatograph through a gas conveying pipe during gas conveying.

In the prior art, when a gas chromatograph is used, gas is generally taken out of the gas chromatograph by a device such as a negative pressure pump, however, the gas is not completely taken out in such a way, and a part of the gas remains in the gas chromatograph, which affects the next detection result.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving and taking out gas from gas chromatograph through devices such as negative pressure pump among the prior art, but this kind of mode takes out gas not thoroughly, has partial gas to stay in gas chromatograph, influences the problem of the testing result next time, and the sample gas circulation device for gas chromatograph who proposes.

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

a sample gas circulation device for a gas chromatograph comprises a chromatograph main body, wherein a hydraulic telescopic rod is fixedly connected with the side wall of the chromatograph main body, the hydraulic telescopic rod penetrates through the side wall of the chromatograph main body and is fixedly connected with a rubber block, the side wall of the rubber block is abutted against the inner wall of the chromatograph main body, the side wall of the chromatograph main body, which is far away from the hydraulic telescopic rod, is provided with an air inlet, the side wall of the chromatograph main body is hermetically connected with an air inlet pipe matched with the air inlet, a valve is arranged on the air inlet pipe, one end of the air inlet pipe, which is far away from the chromatograph main body, is arranged in a round table shape, the upper and lower side walls of the air inlet pipe are fixedly connected with fixed blocks, the side walls of the two fixed blocks are fixedly connected with limit rings through two extension springs, the air inlet pipe penetrates through the limiting ring, the inner wall of the limiting ring is arranged in an inclined mode, and the inner wall of the limiting ring is abutted to the side wall of the air inlet pipe.

Preferably, the lateral wall that hydraulic telescoping rod was kept away from to the block rubber has been seted up and has been accomodate the groove, accomodate the diapire fixedly connected with mount pad in groove, the upper end lateral wall of mount pad is through a plurality of reset spring fixedly connected with pull rings, the lower extreme lateral wall fixedly connected with movable rod of pull ring, the one end that the pull ring was kept away from to the movable rod runs through mount pad and fixedly connected with clamp plate.

Preferably, the pressing plate is provided with a plurality of anti-slip lines on the convex surface of the end far away from the movable rod, and the reset springs are symmetrically arranged on two sides of the movable rod respectively.

Preferably, an annular opening is formed in the side wall, far away from the air inlet, of the chromatograph main body, and an annular screen plate is fixedly connected between the inner walls of the two sides of the annular opening.

Preferably, the material of the air inlet pipe is titanium alloy.

Preferably, the length of the hydraulic telescopic rod is greater than the width of the chromatograph main body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the rubber block is driven to move by the hydraulic telescopic rod, so that the gas in the gas chromatograph is thoroughly discharged, the accuracy of the next detection result is convenient, and meanwhile, the limiting ring is pulled to clamp the gas inlet pipe and the gas conveying pipe input into the chromatograph main body, so that the structure is simple, the gas inlet is easier and more convenient, and the time and the labor are saved;

2. the position of solid phase can be stably limited through the cooperation of reset spring, movable rod, clamp plate etc. and the solid phase can not rock, also can conveniently take out the solid phase from the chromatograph main part simultaneously, convenient and practical, in addition, can make the gas in the external world enter into the right of the rubber piece in the chromatograph through annular opening and annular otter board, and is more convenient when promoting gas outgoing like this.

Drawings

Fig. 1 is a schematic structural diagram of a sample gas circulation device for a gas chromatograph according to the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram at B in fig. 1.

In the figure: 1 chromatograph main part, 2 hydraulic telescoping rod, 3 rubber blocks, 4 intake pipes, 5 valves, 6 fixed blocks, 7 extension spring, 8 spacing rings, 9 mount pads, 10 reset spring, 11 movable rods, 12 clamp plates, 13 annular otter boards, 14 pull rings.

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. 1-3, a sample gas circulation device for a gas chromatograph, comprising a chromatograph main body 1, wherein an annular opening is arranged on the side wall of the chromatograph main body 1 far away from the gas inlet, an annular mesh plate 13 is fixedly connected between the inner walls of the two sides of the annular opening, and the outside gas can enter the right side of a rubber block 3 in the chromatograph through the annular opening and the annular mesh plate 13, so that the gas is more conveniently pushed to be discharged, a hydraulic telescopic rod 2 is fixedly connected to the side wall of the chromatograph main body 1, the length of the hydraulic telescopic rod 2 is greater than the width of the chromatograph main body 1, so that the hydraulic telescopic rod 2 can drive the rubber block 3 to move left and right, thereby the gas in the chromatograph main body 1 is completely discharged, the hydraulic telescopic rod 2 penetrates through the side wall of the chromatograph main body 1 and is fixedly connected with the, thereby avoiding the air circulation at the left and right sides of the rubber block 3 and ensuring that the air can be thoroughly extruded when the rubber block 3 moves;

the side wall of the rubber block 3 far away from the hydraulic telescopic rod 2 is provided with a containing groove, the bottom wall of the containing groove is fixedly connected with a mounting seat 9, the upper end side wall of the mounting seat 9 is fixedly connected with a pull ring 14 through a plurality of reset springs 10, the lower end side wall of the pull ring 14 is fixedly connected with a movable rod 11, one end of the movable rod 11 far away from the pull ring 14 penetrates through the mounting seat 9 and is fixedly connected with a pressing plate 12, the position of a solid phase can be stably limited through the matching of the reset springs 10, the movable rod 11, the pressing plate 12 and the like, the solid phase can not shake, meanwhile, the solid phase can be conveniently taken out of the chromatograph main body 1, the chromatograph is convenient and practical, the convex surface of one end of the pressing plate 12 far away from the movable rod 11 is provided with a plurality of anti-skid grains, the plurality of reset springs 10 are respectively and symmetrically arranged on two sides of the movable rod 11, the friction force, chromatograph main part 1's lateral wall sealing connection has intake pipe 4 that matches with the air inlet, intake pipe 4's material is the titanium alloy, long service life, and can be better with spacing ring 8 cooperation, can not reveal when guaranteeing to admit air, be equipped with valve 5 on the intake pipe 4, the one end that chromatograph main part 1 was kept away from to intake pipe 4 is the setting of round platform shape, the equal fixedly connected with fixed block 6 of the upper and lower lateral wall of intake pipe 4, the lateral wall of two fixed blocks 6 is through 7 fixedly connected with spacing rings 8 of two extension spring, intake pipe 4 runs through spacing ring 8, spacing ring 8's inner wall slope sets up, spacing ring 8's inner wall offsets with intake pipe 4's lateral.

The utility model discloses when utilizing chromatograph main part 1 to examine, can open the door of chromatograph main part 1 thereby put into the groove of accomodating the solid phase, when placing the solid phase, stimulate pull ring 14 earlier, pull ring 14 drives reset spring 10 and extends, drive movable rod 11 and clamp plate 12 simultaneously and rise, then put into the solid phase, loosen pull ring 14, make clamp plate 12 push down the solid phase under reset spring 10's bounce-back effect, thereby limit the position of solid phase, guarantee that the solid phase can not fall down from accomodating the groove, then can make hydraulic telescoping rod 2 extend, thereby drive rubber block 3 and remove, all discharge the left air of rubber block 3 out of chromatograph main part 1 through intake pipe 4 and valve 5;

then will deposit and wait to detect gas container's gas transmission pipe card to intake pipe 4 on, at first stimulate spacing ring 8, make extension spring 7 take place deformation, make spacing ring 8's inner wall and intake pipe 4's lateral wall separation simultaneously, then insert the gas-supply pipe on intake pipe 4, the gas-supply pipe card is between spacing ring 8 and intake pipe 4, then loosen spacing ring 8, make spacing ring 8 and intake pipe 4 cooperation under extension spring 7's bounce-back effect, tightly block the gas-supply pipe, thereby guarantee that the gas transmission process goes on smoothly, and can not have the external gas to get into, guarantee the accuracy of gaseous testing result, moreover, the steam generator is simple in structure, therefore, the clothes hanger is strong in practicability, detect the completion back, open valve 5, make hydraulic telescoping rod 2 drive rubber block 3 and remove, thereby extrude the whole chromatograph main parts 1 of gas, so that next time can use smoothly.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a gaseous circulation device of sample for gas chromatograph, includes chromatograph main part (1), its characterized in that, the lateral wall fixedly connected with hydraulic telescoping rod (2) of chromatograph main part (1), hydraulic telescoping rod (2) run through the lateral wall and the fixedly connected with rubber block (3) of chromatograph main part (1), the lateral wall of rubber block (3) offsets with the inner wall of chromatograph main part (1), the lateral wall that hydraulic telescoping rod (2) were kept away from in chromatograph main part (1) has seted up the air inlet, the lateral wall sealing connection of chromatograph main part (1) has intake pipe (4) with the air inlet matching, be equipped with valve (5) on intake pipe (4), the one end that chromatograph main part (1) was kept away from in intake pipe (4) is the setting of round platform shape, the equal fixedly connected with fixed block (6) of the upper and lower lateral wall of intake pipe, two the lateral wall of fixed block (6) is through two extension spring (7) fixedly connected with spacing ring (8), spacing ring (8) are run through in intake pipe (4), the inner wall slope setting of spacing ring (8), and the inner wall of spacing ring (8) offsets with the lateral wall of intake pipe (4).

2. The sample gas circulation device for the gas chromatograph according to claim 1, wherein a receiving groove is formed in a side wall of the rubber block (3) far away from the hydraulic telescopic rod (2), a mounting seat (9) is fixedly connected to a bottom wall of the receiving groove, a pull ring (14) is fixedly connected to an upper end side wall of the mounting seat (9) through a plurality of return springs (10), a movable rod (11) is fixedly connected to a lower end side wall of the pull ring (14), and one end of the movable rod (11) far away from the pull ring (14) penetrates through the mounting seat (9) and is fixedly connected with a pressing plate (12).

3. The sample gas circulation device for gas chromatograph according to claim 2, wherein the pressure plate (12) is provided with a plurality of anti-slip threads and a convex surface at an end thereof away from the movable rod (11), and the plurality of return springs (10) are symmetrically provided at both sides of the movable rod (11).

4. The sample gas circulation device for gas chromatograph according to claim 1, wherein the chromatograph body (1) has a circular opening on its side wall away from the gas inlet, and a circular mesh plate (13) is fixedly connected between the inner walls of the circular opening.

5. The sample gas flow-through device for gas chromatograph according to claim 1, wherein the material of the inlet pipe (4) is titanium alloy.

6. The sample gas circulation device for gas chromatograph according to claim 1, wherein the length of the hydraulic telescopic rod (2) is greater than the width of the chromatograph main body (1).

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