CN213839986U - Novel gas chromatograph packed column parallel connection joint - Google Patents

Abstract

The utility model discloses a novel gas chromatograph packed column parallel connection head, including passageway main part and graphite cover, the top and both sides of passageway main part all are provided with the screwed pipe, the screwed pipe is kept away from the inboard edge of passageway main part one end and has been seted up the butt joint groove, the outside of screwed pipe is connected with the nut, the inside at the screwed pipe is set up to the graphite cover, the outside edge that the graphite cover is close to the spacing groove is provided with spacing arch, the one end that the screwed pipe was kept away from to the nut is fixed with the rotation post, the both sides of rotating the post are provided with spacing dish. This novel gas chromatograph packed column parallel connection head, through supporting open end wrench with rotate the butt joint of post and rotatory, because the distance of rotating between the outside of the post opposite surface is less than the diameter of spacing dish, when open end wrench and rotation post butt joint, moves through spacing dish restriction open end wrench side, and then avoids open end wrench and rotation post to screw up or appear skidding when unscrewing and deviate.

Description

Novel gas chromatograph packed column parallel connection joint

Technical Field

The utility model relates to a gas chromatograph technical field specifically is a novel gas chromatograph packed column and coupling head.

Background

Gas chromatographs are commonly used to analyze organics that are thermally stable in soil and have a boiling point of no more than 500 ℃. The gas chromatograph is to gasify the sample to be analyzed in the sample inlet, to bring the sample into the chromatographic column with carrier gas, to separate the components in the mixture to be detected through the chromatographic column with different retention performance, and to introduce the separated components into the detector in sequence to obtain the detection signal of each component. Gas chromatograph needs supporting packed column and coupling head to dock when using in the market, current gas chromatograph packed column and coupling head are in the use, the skew scheduling problem that skids easily when still having open-ended spanner butt joint rotation, for this reason, we hope to improve the availability factor of gas chromatograph packed column and coupling head through the innovation to gas chromatograph packed column and coupling head, prevent that supporting open-ended spanner from screwing up or unscrewing and appearing skidding phenomenon, it gives play to the biggest value to make it, along with the development of science and technology, novel gas chromatograph packed column and coupling head has had very big development of degree, its development has brought very big facility for people when examining the time measuring to the gasification organic matter, its kind and quantity are also increasing day by day.

Although the type and the quantity of the novel gas chromatograph packed column parallel connection joint on the current market are very many, the novel gas chromatograph packed column parallel connection joint has the defects that: the graphite sleeve inside the gas chromatograph packed column parallel connection head is easy to loosen and fall off when being connected with a screw cap, the gas chromatograph packed column parallel connection head is easy to slip when being screwed down or loosened by an open end wrench, and the sealing performance of the gas chromatograph packed column parallel connection head and the packed column in butt joint is poor. Therefore, the improvement of the existing novel gas chromatograph packed column parallel connection joint is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel gas chromatograph packed column and coupling head to solve the above-mentioned background art and put forward gas chromatograph packed column and coupling head on the existing market when inside graphite cover is connected with the nut not hard up the droing easily, gas chromatograph packed column and coupling head appear skidding easily when screwing up or unscrewing through the open end wrench and gas chromatograph packed column and coupling head and the relatively poor problem of sealing performance when packing the butt joint of post.

In order to achieve the above object, the utility model provides a following technical scheme: a novel parallel connection joint for a gas chromatograph packed column comprises a channel main body and a graphite sleeve, wherein threaded pipes are arranged on the top and two sides of the channel main body, and butt joint grooves are formed in the inner side edges of one ends, far away from the channel main body, of the threaded pipes;

the outside of screwed pipe is connected with the nut, the nut is kept away from the inboard edge of screwed pipe one end and is seted up the spacing groove, the graphite sleeve sets up the inside at the screwed pipe, the outside edge that the graphite sleeve is close to the spacing groove is provided with spacing arch, spacing arch docks with the spacing groove, the draw-in groove has been seted up to the inboard surface of graphite sleeve, the one end that the screwed pipe was kept away from to the nut is fixed with rotates the post, the both sides of rotating the post are provided with spacing dish, the outside edge of spacing dish is provided with anti-skidding arch.

Preferably, the cross section of the limiting protrusion is arc-shaped, the diameter of the limiting protrusion is matched with that of the limiting groove, and the limiting protrusion is connected with the limiting groove in a clamping manner.

Preferably, the clamping grooves are distributed on the inner side surface of the graphite sleeve in parallel at equal intervals, the axial lead of the clamping grooves and the axial lead of the graphite sleeve are superposed, and the cross section of the clamping grooves is U-shaped.

Preferably, the axial lead of the limiting disc and the axial lead of the nut are overlapped, and the diameter of the limiting disc is larger than the vertical distance between the surfaces of the two opposite sides of the outer part of the rotating column.

Preferably, the anti-skid protrusions are distributed at equal included angles with respect to the axis of the limiting disc, and the shape of the anti-skid protrusions is a strip-shaped structure.

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

(1) the novel parallel connection joint for the gas chromatograph packed column is characterized in that the graphite sleeve and the packed column are in butt joint, and the graphite sleeve and the nut are pressed to be connected, so that the limiting groove in the inner side of the nut and the limiting protrusion in the outer side of the graphite sleeve are clamped, and the graphite sleeve and the nut are effectively prevented from being loosened and falling in butt joint;

(2) the novel parallel connection head of the gas chromatograph packed column is in butt joint and rotation with the rotating column through the matched open end wrench, and because the distance between the opposite surfaces of the outer sides of the rotating column is smaller than the diameter of the limiting disc, when the open end wrench is in butt joint with the rotating column, the limit disc limits the lateral movement of the open end wrench, and further, the slip deviation is avoided when the open end wrench is screwed or unscrewed with the rotating column;

(3) this novel gas chromatograph packed column and coupling head, it is fixed through locking nut and screwed pipe, make the nut drive the butt joint groove of graphite cover and screwed pipe one side and closely laminate for the graphite cover is tight antiskid is pressed from both sides to the packed column through inboard draw-in groove that is equidistant distribution, thereby guarantees the leakproofness of connecting between packed column and the graphite cover.

Drawings

Fig. 1 is a schematic view of a parallel connection joint of a gas chromatograph packed column according to the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the parallel connection joint of the gas chromatograph packed column of the present invention;

FIG. 3 is a left side view cross-sectional structure diagram of a parallel connection joint of a gas chromatograph packed column of the present invention;

fig. 4 is a schematic diagram of a part a enlarged structure in fig. 2 of the parallel connector of the gas chromatograph packed column of the present invention.

In the figure: 1. a channel body; 2. a threaded pipe; 3. a butt joint groove; 4. a nut; 5. a limiting groove; 6. a graphite sleeve; 7. a limiting bulge; 8. a card slot; 9. rotating the column; 10. a limiting disc; 11. and (4) anti-skid bulges.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a novel parallel connection joint for a gas chromatograph packed column comprises a channel main body 1, a threaded pipe 2, a butt joint groove 3, a nut 4, a limiting groove 5, a graphite sleeve 6, a limiting bulge 7, a clamping groove 8, a rotating column 9, a limiting disc 10 and an anti-skid bulge 11, wherein the threaded pipe 2 is arranged on the top and two sides of the channel main body 1, and the butt joint groove 3 is formed in the edge of the inner side of one end, away from the channel main body 1, of the threaded pipe 2;

the outer side of the threaded pipe 2 is connected with a screw cap 4, the inner side edge of one end, far away from the threaded pipe 2, of the screw cap 4 is provided with a limiting groove 5, the graphite sleeve 6 is arranged inside the threaded pipe 2, the outer side edge, close to the limiting groove 5, of the graphite sleeve 6 is provided with a limiting bulge 7, the cross section of the limiting bulge 7 is arc-shaped, the diameter of the limiting bulge 7 is matched with that of the limiting groove 5, the limiting bulge 7 is connected with the limiting groove 5 in a clamping manner, so that the graphite sleeve 6 can be prevented from falling off from the screw cap 4 when the graphite sleeve 6 is in butt joint with the screw cap 4, the limiting bulge 7 is in butt joint with the limiting groove 5, the inner side surface of the graphite sleeve 6 is provided with a clamping groove 8, the clamping grooves 8 are distributed on the inner side surface of the graphite sleeve 6 in parallel at equal intervals, the axial lead of the clamping grooves 8 and the axial lead of the graphite sleeve 6 are mutually coincident, and the cross section of the clamping grooves 8 is U-shaped, make graphite sleeve 6 when connecting to the packing post clamp that runs through, carry out antiskid to the packing post through draw-in groove 8, the one end that screwed pipe 2 was kept away from to nut 4 is fixed with rotates post 9, the both sides that rotate post 9 are provided with spacing dish 10, the axial lead of spacing dish 10 and the axial lead of nut 4 coincide each other, and the diameter of spacing dish 10 is greater than the perpendicular distance between the outside opposition both sides surface of rotation post 9 for spacing dish 10 can carry on spacingly to the open-ended spanner of inserting in rotating the post 9 outside, avoids supporting open-ended spanner to take place the side to move and skids, the outside edge of spacing dish 10 is provided with non-slip raised 11, non-slip raised 11 is the equal contained angle distribution about the axial lead of spacing dish 10, and non-slip raised 11's shape is bar structure, can avoid rotating when contacting through non-slip raised 11 and finger and skid.

The working principle is as follows: when the novel gas chromatograph packed column parallel connection joint is used, firstly, one end of the packed column is simultaneously connected with the screw cap 4 and the rotating column 9 in a penetrating way, the graphite sleeve 6 is connected with the packed column in a butting way, the graphite sleeve 6 is connected with the screw cap 4 in a pressing way, so that the limiting groove 5 at the inner side of the screw cap 4 is connected with the limiting bulge 7 at the outer side of the graphite sleeve 6 in a clamping way, the butting and falling of the graphite sleeve 6 and the screw cap 4 are avoided, then, the rotating column 9 is screwed up through the anti-skid bulge 11 on the surface of the limiting disc 10, so that the rotating column 9 drives the screw cap 4 and the threaded pipe 2 to be in threaded connection, then, the matched opening wrench is butted with the rotating column 9 and rotates, because the distance between the opposite surfaces at the outer side of the rotating column 9 is smaller than the diameter of the limiting disc 10, when the opening wrench is butted with the rotating column 9, the side shift of the opening wrench can be limited through the limiting disc 10, avoid open spanner and rotation post 9 to screw up or appear skidding skew when unscrewing, simultaneously, when nut 4 and screwed pipe 2 lock fastening, nut 4 drives the butt joint groove 3 of graphite cover 6 and screwed pipe 2 one side and closely laminates, make graphite cover 6 press from both sides tight antiskid to the packing post through inboard draw-in groove 8 that is equidistant distribution, thereby guarantee the connection leakproofness between packing post and the graphite cover 6, and then can carry out fixed connection with the passageway main part 1 of this packing post parallel connection joint and the open end of three packing post, the content of not making detailed description in this description belongs to the prior art that technical person in the field knows.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (5)

1. The utility model provides a novel gas chromatograph packed column parallel connection head, includes passageway main part (1) and graphite cover (6), its characterized in that: the top and two sides of the channel main body (1) are both provided with threaded pipes (2), and the inner side edge of one end, far away from the channel main body (1), of each threaded pipe (2) is provided with a butt joint groove (3);

the outside of screwed pipe (2) is connected with nut (4), spacing groove (5) have been seted up to the inboard edge that screwed pipe (2) one end was kept away from in nut (4), graphite cover (6) set up the inside at screwed pipe (2), the outside edge that graphite cover (6) are close to spacing groove (5) is provided with spacing arch (7), spacing arch (7) dock with spacing groove (5), draw-in groove (8) have been seted up to the inboard surface of graphite cover (6), the one end that screwed pipe (2) were kept away from in nut (4) is fixed with rotates post (9), the both sides that rotate post (9) are provided with spacing dish (10), the outside edge of spacing dish (10) is provided with anti-skidding arch (11).

2. The novel parallel connection joint for the gas chromatograph packed column according to claim 1, characterized in that: the cross-sectional shape of limiting protrusion (7) is circular-arc, the diameter of limiting protrusion (7) is identical to the diameter of limiting groove (5), and limiting protrusion (7) is connected with limiting groove (5) in a clamping manner.

3. The novel parallel connection joint for the gas chromatograph packed column according to claim 1, characterized in that: the clamping grooves (8) are distributed on the inner side surface of the graphite sleeve (6) in parallel at equal intervals, the axial lead of the clamping grooves (8) and the axial lead of the graphite sleeve (6) are superposed, and the cross section of each clamping groove (8) is U-shaped.

4. The novel parallel connection joint for the gas chromatograph packed column according to claim 1, characterized in that: the axial lead of the limiting disc (10) and the axial lead of the nut (4) are mutually overlapped, and the diameter of the limiting disc (10) is larger than the vertical distance between the two external opposite side surfaces of the rotating column (9).

5. The novel parallel connection joint for the gas chromatograph packed column according to claim 1, characterized in that: the antiskid lugs (11) are distributed at equal included angles relative to the axial lead of the limiting disc (10), and the antiskid lugs (11) are of strip-shaped structures.

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