CN214252157U - Gas chromatography advances appearance connecting pipe - Google Patents

Abstract

The utility model relates to a gas chromatography advances kind connecting pipe, including first arc, second arc, ring channel and connecting pipe, the inside elastic webbing that is equipped with of ring channel, the wrapping up in connecting pipe surface rear side has the fastening area, establish to the processing layer connecting pipe internal surface. Compared with the prior art, the utility model has the advantages that the fastening belt and the thread line matched with the fastening belt are designed, so that the fastening belt is fixed on the surface of the connecting pipe, the sample injection pipe can be clamped, the sample injection connecting pipe is secondarily clamped through the first arc-shaped plate and the second arc-shaped plate, gas leakage is avoided, the connecting effect of the sample injection connecting pipe is improved, interfaces connected with the same connecting pipe can be conveniently and rapidly distinguished through the elastic belt, and the adsorption of the inner surface of the sample injection connecting pipe to gas is reduced through the processing layer; the utility model discloses the linkage effect is better, can effectively reduce gaseous absorption, makes things convenient for the differentiation of connecting pipe.

Description

Gas chromatography advances appearance connecting pipe

Technical Field

The utility model relates to a gas chromatograph's auxiliary assembly specifically is a gas chromatograph advances kind connecting pipe.

Background

Gas chromatography (GC for short) is a major scientific and technological achievement in the fifties of the twentieth century. The method is a new separation and analysis technology and is widely applied to industrial, agricultural, national defense, construction and scientific research. Gas chromatography can be divided into gas-solid chromatography and gas-liquid chromatography.

Gas chromatograph need pass through the connecting pipe with gas outlet and introduction port before advancing the appearance and connect, in the in-service use, current appearance connecting pipe is because the needs of wasing and changing, its linkage effect is not very ideal, and the connecting pipe internal surface is comparatively crude, make gaseous a large amount of absorptions in the connecting pipe, whether the while is using the interface that a certain set of connecting pipe need be detected to the staff after a period whether stable, the inconvenient quick differentiation of current connecting pipe is the interface that same root connecting pipe is connected.

Disclosure of Invention

To the problem in the background art, the utility model aims at providing a gas chromatography advances kind connecting pipe is through designing first arc, second arc, elastic webbing, fastening area and processing layer to the connection effect who proposes in solving above-mentioned background art is relatively poor, and gaseous a large amount of absorption and the problem of inconvenient differentiation, the utility model discloses the connection effect is better, can effectively reduce gaseous absorption, makes things convenient for the differentiation of connecting pipe.

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

a gas chromatography sample introduction connecting tube, comprising: the first semicircular pipe and the second semicircular pipe are connected in a matched mode, a first arc plate and a second arc plate are arranged inside the first semicircular pipe and the second semicircular pipe, the connecting pipes wrap the inner surfaces of the first arc plate and the second arc plate, annular grooves are symmetrically formed in the outer surfaces of the first semicircular pipe and the second semicircular pipe, an elastic band is arranged inside each annular groove, a first annular plate and a second annular plate are respectively arranged on the rear sides of the inner surfaces of the first semicircular pipe and the second semicircular pipe, a fastening band is wrapped on the rear side of the outer surface of each connecting pipe and is arranged between the first annular plate and the second annular plate, first circular holes are formed in the upper side and the lower side of the outer surface of the first arc plate, two groups of second circular holes are formed in the upper side and the lower side of the inner surface of the first semicircular pipe, springs are arranged inside the first circular holes and the second circular holes, the spring both ends are fixed respectively in first round hole and second round hole bottom, first semicircle pipe surface set up threaded hole, threaded hole inside is equipped with hand screw, the connecting pipe internal surface is equipped with the processing layer, the processing layer is handled through pickling passivation or electrolytic polishing, connecting pipe surface equidistance is equipped with the external thread line, the fastening tape surface is equipped with the internal thread line, the upper surface of fastening tape one end is equipped with magic subsides matte, and the lower surface of fastening tape other end is equipped with magic subsides hook face.

Hinge is connected to first semicircle pipe and second semicircle pipe surface downside, and first semicircle pipe and second semicircle pipe surface upside symmetric connection have the fixed block, the fixed block surface is equipped with the pilot hole, and the inside screw nail that is equipped with of pilot hole.

Four groups of first round holes are formed in the outer surfaces of the first arc-shaped plate and the second arc-shaped plate, four groups of second round holes are formed in the inner surfaces of the first semicircular tube and the second semicircular tube, four groups of springs are arranged in the four groups of first round holes and the four groups of second round holes, four groups of threaded holes are formed in the four groups of threaded holes, the four groups of threaded holes are formed in the outer surfaces of the first semicircular tube and the second semicircular tube respectively, four groups of hand-screwed screws are arranged in the four groups of threaded holes respectively, and the four groups of hand-screwed screws are in contact with the outer surfaces of the first arc-shaped plate and the second arc-shaped plate respectively.

The outer surface of the elastic belt is adhered with a layer of colored paint.

The first annular plate and the second annular plate are both provided with two sets of, two sets of the first annular plate and the two sets of second annular plates are fixed respectively at the rear side of the inner surface of the first semicircular pipe and the second semicircular pipe, and the second annular plates are located at the rear sides of the two sets of first annular plates.

The fastening tape is composed of rubber.

The utility model has the advantages that: the utility model discloses a design fastening belt and with fastening belt complex whorl line for the fastening belt is fixed on the connecting pipe surface, can press from both sides tight to advance kind pipe, and then through first arc and second arc to advance kind connecting pipe secondary centre gripping, avoid gas to reveal, improved the connection effect of advancing kind connecting pipe, conveniently distinguish the interface that same root connecting pipe is connected fast through the elastic webbing, reduce the absorption of advancing kind connecting pipe internal surface to gas through the processing layer; the utility model discloses the linkage effect is better, can effectively reduce gaseous absorption, makes things convenient for the differentiation of connecting pipe.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the connecting pipe of the present invention.

Fig. 3 is a schematic overall plan view of the present invention.

Fig. 4 is a left side schematic view of the present invention.

Fig. 5 is an enlarged view of the part a of the present invention.

In the figure: 1. first semicircle pipe, 11, second semicircle pipe, 2, first arc, 3, second arc, 4, connecting pipe, 5, ring channel, 6, elastic webbing, 7, first annular plate, 8, fastening area, 9, second annular plate, 31, first round hole, 32, spring, 33, second round hole, 34, screw hole, 35, hand screw, 41, handle layer, 42, external thread line, 81, internal thread line, 82, magic tape matte, 83, magic tape hook face.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be noted that the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a gas chromatography sample introduction connecting tube, comprising: the connecting pipe comprises a first semicircular pipe 1, a second semicircular pipe 11 and a connecting pipe 4, wherein the first semicircular pipe 1 is connected with the second semicircular pipe 11 in a matching way, a first arc-shaped plate 2 and a second arc-shaped plate 3 are arranged inside the first semicircular pipe 1 and the second semicircular pipe 11, the connecting pipe 4 is wrapped on the inner surfaces of the first arc-shaped plate 2 and the second arc-shaped plate 3, annular grooves 5 are symmetrically arranged on the outer surfaces of the first semicircular pipe 1 and the second semicircular pipe 11, elastic belts 6 are arranged inside the annular grooves 5, a first annular plate 7 and a second annular plate 9 are respectively arranged on the rear sides of the inner surfaces of the first semicircular pipe 1 and the second semicircular pipe 11, fastening belts 8 are wrapped on the rear sides of the outer surfaces of the connecting pipe 4, the fastening belts 8 are arranged between the first annular plate 7 and the second annular plate 9, first round holes 31 are respectively arranged on the upper side and the lower side of the outer surface of the first arc-shaped plate 2, two groups of second round holes 33 are respectively arranged on the upper side and the lower side of the inner surface of the first semicircular pipe 1, springs 32 are arranged inside the first round holes 31 and the second round holes 33, spring 32 both ends are fixed respectively in first round hole 31 and second round hole 33 bottom, threaded hole 34 has been seted up to 1 surface of first semicircle pipe, the inside hand screw 35 that is equipped with of threaded hole 34, 4 internal surfaces of connecting pipe are established to handle layer 41, handle layer 41 through pickling passivation or electrolytic polishing processing, 4 surface equidistance of connecting pipe are equipped with external thread line 42, 8 surfaces in fastening area are equipped with internal thread line 81, 8 one section upper surfaces in fastening area are equipped with magic tape matte surface 82, the lower surface of the 8 other ends in fastening area is equipped with magic tape hook surface 83.

Specifically, before the use, firstly the elastic band 6 is sleeved on the surface of the connecting pipe 4, then the gas chromatography air inlet pipe or air outlet pipe is inserted into the connecting pipe 4 with a proper caliber, then the internal thread line 81 on the inner surface of the fastening band 8 is in fit contact with the external thread line 42 on the outer surface of the connecting pipe 4, at the moment, a group of pressing acting force is applied to one end of the fastening band 8, one end of the fastening band 8 is fixed on the surface of the connecting pipe 4, then the other end of the fastening band 8 is pulled, the lower surface of the fastening band 8 is attached to the outer surface of the connecting pipe 4, at the moment, the upper surface and the lower surface of the fastening band 8 are in contact, at the moment, the magic paste rough surface 82 is in fit connection with the magic paste hook surface 83, so that the fastening band 8 is fixed on the outer surface of the connecting pipe 4, the tightness between the connecting pipe 4 and the gas chromatography air inlet pipe or air outlet pipe is increased through the fastening band 8, and then the first semicircular pipe 1 and the second semicircular pipe 11 are wrapped on the outer surface of the connecting pipe 4, make fastening area 8 assemble between first arc 2 and second arc 3, and then draw close first semicircle pipe 1 and second semicircle pipe 11, then align the fixed block on first semicircle pipe 1 and second semicircle pipe 11 surface, assemble the screw thread nail inside the fixed block at last to accomplish the connection between first semicircle pipe 1 and the second semicircle pipe 11.

Then, rotating acting force is respectively applied to the four groups of hand screws 35, so that the hand screws 35 extend into the threaded holes 34, at the moment, the hand screws 35 extrude the surfaces of the first arc-shaped plate 2 or the second arc-shaped plate 3, the spring 32 is elastically deformed and stretched, the hand screws 35 push the first arc-shaped plate 2 or the second arc-shaped plate 3 to move, then, the inner surfaces of the first arc-shaped plate 2 and the second arc-shaped plate 3 are in contact with the outer surface of the connecting pipe 4, clamping of the connecting pipe 4 on an air inlet pipe or an air outlet pipe is realized, gas leakage through the connecting pipe 4 is avoided, finally, pulling acting force is applied to the elastic belt 6, the elastic belt 6 is elastically deformed, then, the elastic belt 6 is wrapped in the annular groove 5, after the use for a period, a worker needs to detect whether the interface of a certain group of the connecting pipe 4 is stable, the interfaces of the same group of connecting pipes 4 can be quickly distinguished through colored paint on the surface of the elastic belt 6, is convenient to find.

In actual use, because the inner surface of the processing layer 41 is subjected to acid pickling passivation or electrolytic polishing treatment, after the surface treatment, the roughness of the pipeline material is reduced, the gas outlet rate is reduced, and the surface adsorbability is weakened, so that when gas passes through the inside of the connecting pipe 4, the adsorption of the connecting pipe 4 to the gas is reduced.

Hinge is connected to 11 surface downside of first semicircle pipe 1 and second semicircle pipe, and 11 surface upside symmetric connections of first semicircle pipe 1 and second semicircle pipe have the fixed block, and the fixed block surface is equipped with the pilot hole, and the inside screw nail that is equipped with of pilot hole is convenient for fix through fixed block and screw nail specifically.

Four groups of first round holes 31 are formed in the outer surfaces of the first arc-shaped plate 2 and the second arc-shaped plate 3, four groups of second round holes 33 are formed in the inner surfaces of the first semicircular tube 1 and the second semicircular tube 11, four groups of springs 32 are arranged in the four groups of first round holes 31 and the four groups of second round holes 33, four groups of threaded holes 34 are formed in the four groups of threaded holes 34, the outer surfaces of the first semicircular tube 1 and the second semicircular tube 11 are respectively formed in the four groups of threaded holes 34, four groups of hand-screwed screws 35 are respectively arranged in the four groups of threaded holes, the four groups of hand-screwed screws 35 are respectively in contact with the outer surfaces of the first arc-shaped plate 2 and the second arc-shaped plate 3, and particularly, the first arc-shaped plate 2 and the second arc-shaped plate 3 are enabled to move through the hand-screwed screws 35.

The outer surface of the elastic belt 6 is attached with a layer of colored paint, and particularly, the connecting pipe 4 is convenient to distinguish through the colored paint.

First annular plate 7 and second annular plate 9 all are provided with two sets ofly, and two sets of first annular plates 7 and two sets of second annular plates 9 are fixed respectively at first semicircle pipe 1 and 11 internal surface rear sides of second semicircle pipe, and two sets of second annular plates 9 are located two sets of first annular plates 7 rear sides, specifically, conveniently are connected with the cooperation of fastening belt 8.

The fastening tape 8 is made of rubber, and in particular, facilitates to improve the effect of connecting the fastening tape 8 with the first annular plate 7 and the second annular plate 9.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

The part of the utility model not detailed is prior art.

Claims (6)

1. The utility model provides a kind connecting pipe is advanced to gas chromatography, includes first semicircle pipe (1), second semicircle pipe (11) and connecting pipe (4), characterized by: the first semicircular pipe (1) is connected with the second semicircular pipe (11) in a matched mode, a first arc-shaped plate (2) and a second arc-shaped plate (3) are arranged inside the first semicircular pipe (1) and the second semicircular pipe (11), the inner surfaces of the first arc-shaped plate (2) and the second arc-shaped plate (3) are wrapped by connecting pipes (4), annular grooves (5) are symmetrically formed in the outer surfaces of the first semicircular pipe (1) and the second semicircular pipe (11), an elastic belt (6) is arranged inside the annular grooves (5), the rear sides of the inner surfaces of the first semicircular pipe (1) and the second semicircular pipe (11) are respectively provided with a first annular plate (7) and a second annular plate (9), a fastening belt (8) is wrapped on the rear side of the outer surface of the connecting pipes (4), the fastening belt (8) is arranged between the first annular plate (7) and the second annular plate (9), and first round holes (31) are formed in the upper side and the lower side of the outer surface of the first arc-shaped plate (2), two groups of second round holes (33) are respectively arranged at the upper side and the lower side of the inner surface of the first semicircular tube (1), a spring (32) is arranged inside the first round hole (31) and the second round hole (33), two ends of the spring (32) are respectively fixed at the bottoms of the first round hole (31) and the second round hole (33), a threaded hole (34) is formed in the outer surface of the first semicircular tube (1), a hand-screwed screw (35) is arranged in the threaded hole (34), the inner surface of the connecting pipe (4) is provided with a treatment layer (41), the treatment layer (41) is subjected to acid cleaning passivation or electrolytic polishing treatment, connecting pipe (4) surface equidistance is equipped with external thread line (42), fastening area (8) surface is equipped with internal thread line (81), and the upper surface of fastening area (8) one end is equipped with magic tape matt surface (82), and the lower surface of the fastening area (8) other end is equipped with magic tape hook face (83).

2. The gas chromatography sample introduction connecting pipe according to claim 1, characterized in that: hinge is connected to first semicircle pipe (1) and second semicircle pipe (11) surface downside, and first semicircle pipe (1) and second semicircle pipe (11) surface upside symmetric connection has the fixed block, the fixed block surface is equipped with the pilot hole, and the pilot hole is inside to be equipped with the screw thread nail.

3. The gas chromatography sample introduction connecting pipe according to claim 1, characterized in that: four groups of first round holes (31) are respectively formed in the outer surfaces of the first arc-shaped plate (2) and the second arc-shaped plate (3), four groups of second round holes (33) are respectively formed in the inner surfaces of the first semicircular tube (1) and the second semicircular tube (11), four groups of springs (32) are arranged inside the first round holes (31) and the four groups of second round holes (33), four groups of threaded holes (34) are formed, four groups of threaded holes (34) are respectively formed in the outer surfaces of the first semicircular tube (1) and the second semicircular tube (11), four groups of hand-screwed screws (35) are respectively arranged inside the four groups of threaded holes (34), and the four groups of hand-screwed screws (35) are respectively in contact with the outer surfaces of the first arc-shaped plate (2) and the second arc-shaped plate (3).

4. The gas chromatography sample introduction connecting pipe according to claim 1, characterized in that: the outer surface of the elastic belt (6) is attached with a layer of colored paint.

5. The gas chromatography sample introduction connecting pipe according to claim 1, characterized in that: first annular plate (7) and second annular plate (9) all are provided with two sets ofly, and two sets of first annular plate (7) and two sets of second annular plate (9) are fixed respectively in first semicircle pipe (1) and second semicircle pipe (11) internal surface rear side, and two sets of second annular plate (9) are located two sets of first annular plate (7) rear sides.

6. The gas chromatography sample introduction connecting pipe according to claim 1, characterized in that: the fastening band (8) is made of rubber.

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