CN212904710U

CN212904710U - Sample introduction structure of gas chromatograph

Info

Publication number: CN212904710U
Application number: CN202021357899.XU
Authority: CN
Inventors: 张淑娥; 孙永威; 田甲栋
Original assignee: Henan Huajian Testing Technology Service Co ltd
Current assignee: Henan Huajian Testing Technology Service Co ltd
Priority date: 2020-07-13
Filing date: 2020-07-13
Publication date: 2021-04-06
Anticipated expiration: 2030-07-13

Abstract

The utility model discloses a gas chromatograph's sampling structure, including the install bin, the bottom intercommunication of install bin has the sample inlet pipe, the equal fixedly connected with fixed block in both sides of install bin inner chamber bottom, the top fixedly connected with stopper of fixed block, the top of install bin is provided with the syringe body, the bottom of syringe body runs through to the inner chamber of install bin and contacts with the stopper. The utility model provides a current gas chromatograph's advance a kind structure to fixed insecure of syringe needle, the problem that the syringe needle bending damage appears easily, this gas chromatograph's advance a kind structure possesses to fixed firm of syringe needle, prevents to appear the advantage that the syringe needle bending damage.

Description

Sample introduction structure of gas chromatograph

Technical Field

The utility model relates to a gas chromatograph technical field specifically is a gas chromatograph's structure of advancing.

Background

The gas chromatograph is an instrument for qualitatively and quantitatively analyzing a multi-component complex mixture by utilizing a chromatographic separation technology and a detection technology, can be generally used for analyzing organic matters with thermal stability and boiling points not more than five hundred degrees in soil, such as volatile organic matters, organic chlorine, organic phosphorus, polycyclic aromatic hydrocarbons, phthalate ester and the like, has various functions and similar basic structures, generally comprises a gas path system, a sample introduction system, a separation system, a detection and temperature control system and a recording system, and when the gas chromatograph is used, a detection sample needs to be input into the gas chromatograph through a sample introduction device, the sample introduction structure of the existing gas chromatograph has the defects that a sample introduction needle is unstable at a sample introduction port, the needle is easy to be broken, bent or damaged, the gas chromatograph cannot be continuously used, the needle needs to be replaced again, the process is troublesome and the waste of resources is caused, is not beneficial to the use of people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas chromatograph's sampling structure possesses to the fixed firm of syringe needle, prevents to appear the crooked advantage of damaging of syringe needle, and the sampling structure of having solved current gas chromatograph is fixed unstable to the syringe needle, appears the crooked problem of damaging of syringe needle easily.

The utility model provides a following technical scheme: a sample introduction structure of a gas chromatograph comprises an installation box, wherein the bottom of the installation box is communicated with a sample introduction pipe, two sides of the bottom of an inner cavity of the installation box are fixedly connected with fixed blocks, the top of the fixed blocks is fixedly connected with a limiting block, the top of the installation box is provided with a sample introduction needle body, the bottom of the sample introduction needle body penetrates through the inner cavity of the installation box and is contacted with the limiting block, the bottom of the sample introduction needle body is communicated with a needle head body, the bottom of the needle head body extends to the inner cavity of the sample introduction pipe, two sides of the top of the inner cavity of the installation box are fixedly connected with an adjusting shell, the bottom of the inner cavity of the adjusting shell is movably connected with a threaded rod, the top of the threaded rod penetrates through the outer side of the installation box and is fixedly connected with a knob, a threaded sleeve is sleeved on the surface of the threaded, the top of the fixed rod is fixedly connected with a control rod, the top of the control rod penetrates to the outer side of the installation box and is fixedly connected with a fixed box, one opposite sides of the two fixed boxes are respectively provided with a pull rod, one opposite sides of the two pull rods penetrate through the fixed box and are fixedly connected with a pull ring, a movable plate is sleeved on the surface of the pull rod and is positioned in an inner cavity of the fixed box, a first spring is sleeved on one side of the surface of the pull rod, which is positioned close to the pull ring, of the movable plate, a slide rod is fixedly connected with the bottom of the adjusting shell, the bottom of the slide rod is fixedly connected with the inner wall of the installation box, sliding sleeves are respectively sleeved on the top and the bottom of the surface of the slide rod, a second spring is sleeved on the surface of the slide rod and is positioned between the two sliding sleeves, push plates are respectively arranged, the equal fixedly connected with regulating block in top of the relative one side of two push pedals, the equal fixedly connected with in bottom of the relative one side of two push pedals adjusts the pole, the one side of keeping away from the push pedal of adjusting the pole runs through to the inner chamber and the fixedly connected with movable block of fixed block.

One side that the push pedal was kept away from to the stopper contacts with the syringe body, the first opening that uses with the cooperation of syringe body is seted up at the top of install bin.

The surface of threaded rod all passes through bearing swing joint with the junction of adjusting shell and install bin, the equal fixedly connected with slider in the opposite one side of two thread bush, the spout that uses with the slider cooperation is seted up to the inner wall of install bin.

The surface of the pull rod is fixedly connected with the movable plate, and second openings matched with the pull rod for use are formed in the two sides of the fixing box.

The top and the bottom of second spring all with sliding sleeve fixed connection, the junction of one side that two push pedals are opposite and connecting rod all through pivot swing joint, one side and the injection needle body contact of push pedal are kept away from to the regulating block.

The utility model has the advantages as follows:

1. the utility model provides a current gas chromatograph's advance a kind structure to fixed insecure of syringe needle, the problem of the crooked damage of syringe needle appears easily, this gas chromatograph's advance a kind structure possesses to fixed firm of syringe needle, prevents the advantage that the syringe needle bending damage appears, is worth promoting.

2. The utility model discloses a set up the stopper, can prevent that the syringe body from taking place the displacement in the install bin inside, through setting up the knob, can the person of facilitating the use rotate the threaded rod, through setting up the thread bush, can drive the dead lever with the threaded rod cooperation and remove, through setting up the pull ring, can the person of facilitating the use pulling rod, through setting up the pull rod, can adjust the position of use of fly leaf, through setting up the regulating block, can the fixed syringe body of centre gripping, through setting up regulation pole and movable block, can make things convenient for the removal of push pedal.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the structure of the present invention;

fig. 3 is a partially enlarged view of a in fig. 1 according to the present invention.

In the figure: 1. installing a box; 2. a sample inlet pipe; 3. a fixed block; 4. a limiting block; 5. a sample injection needle body; 6. a needle body; 7. an adjustment housing; 8. a threaded rod; 9. a knob; 10. a threaded sleeve; 11. fixing the rod; 12. a control lever; 13. a fixing box; 14. a pull rod; 15. a pull ring; 16. a movable plate; 17. a first spring; 18. a slide bar; 19. a sliding sleeve; 20. a second spring; 21. pushing the plate; 22. a connecting rod; 23. an adjusting block; 24. adjusting a rod; 25. a movable block.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

Referring to fig. 1-3, a sample injection structure of a gas chromatograph comprises an installation box 1, a sample injection tube 2 is communicated with the bottom of the installation box 1, fixed blocks 3 are fixedly connected to both sides of the bottom of an inner cavity of the installation box 1, a limit block 4 is fixedly connected to the top of the fixed block 3, a sample injection needle body 5 is arranged at the top of the installation box 1, the bottom of the sample injection needle body 5 penetrates through the inner cavity of the installation box 1 and contacts with the limit block 4, a needle body 6 is communicated with the bottom of the sample injection needle body 5, the bottom of the needle body 6 extends to the inner cavity of the sample injection tube 2, an adjusting shell 7 is fixedly connected to both sides of the top of the inner cavity of the installation box 1, a threaded rod 8 is movably connected to the bottom of the inner cavity of the adjusting shell 7, the top of the threaded rod 8 penetrates through the outer side of the installation box 1 and is fixedly connected, a fixed rod 11 is fixedly connected to one side of each of the two thread sleeves 10, a control rod 12 is fixedly connected to the top of each fixed rod 11, the top of each control rod 12 penetrates through the outer side of the installation box 1 and is fixedly connected with a fixed box 13, a pull rod 14 is arranged on one side of each of the two fixed boxes 13, one side of each pull rod 14, which is opposite to the other side, penetrates through the fixed box 13 and is fixedly connected with a pull ring 15, a movable plate 16 is sleeved on the surface of each pull rod 14 and in an inner cavity of the fixed box 13, a first spring 17 is sleeved on one side of the movable plate 16, which is close to the pull ring 15, the surface of each pull rod 14, a slide rod 18 is fixedly connected to the bottom of the adjusting shell 7, the bottom of each slide rod 18 is fixedly connected with the inner wall of the installation box 1, sliding sleeves 19 are respectively sleeved on the top and the bottom of the, one side of the sliding sleeve 19 close to the push plate 21 is movably connected with a connecting rod 22, one side of the connecting rod 22 far away from the sliding sleeve 19 is movably connected with the push plate 21, the tops of the opposite sides of the two push plates 21 are fixedly connected with an adjusting block 23, the bottoms of the opposite sides of the two push plates 21 are fixedly connected with an adjusting rod 24, one side of the adjusting rod 24 far away from the push plate 21 penetrates through an inner cavity of the fixed block 3 and is fixedly connected with a movable block 25, one side of the limiting block 4 far away from the push plate 21 is contacted with the sample injection needle body 5, the top of the installation box 1 is provided with a first opening matched with the sample injection needle body 5 for use, the surface of the threaded rod 8 is movably connected with the joint of the adjusting shell 7 and the installation box 1 through a bearing, one side of the two thread sleeves 10 opposite is fixedly connected with a sliding, the two sides of the fixing box 13 are both provided with second openings matched with the pull rod 14 for use, the top and the bottom of the second spring 20 are both fixedly connected with the sliding sleeve 19, the opposite sides of the two push plates 21 are both movably connected with the connecting rod 22 through a rotating shaft, one side of the adjusting block 23 far away from the push plates 21 is contacted with the sampling needle body 5, the limiting block 4 is arranged to prevent the sampling needle body 5 from displacing in the installation box 1, the knob 9 is arranged, so that a user can conveniently rotate the threaded rod 8, the threaded sleeve 10 is arranged, the threaded sleeve can be matched with the threaded rod 8 to drive the fixed rod 11 to move, the pull ring 15 is arranged, so that a user can conveniently pull the pull rod 14, the use position of the movable plate 16 can be adjusted by arranging the pull rod 14, through setting up regulating block 23, can the centre gripping fixed injection needle body 5, through setting up regulation pole 24 and movable block 25, can make things convenient for the removal of push pedal 21.

The utility model drives the threaded rod 8 to rotate through the knob 9, the threaded rod 8 is matched with the thread bushing 10 to drive the fixed rod 11 and the control rod 12 to move, the control rod 12 is moved to drive the fixed box 13 to move, when the fixed box 13 is adjusted to a certain height, the pull ring 15 is pulled, the pull ring 15 is matched with the pull rod 14 to drive the movable plate 16 to extrude the first spring 17, one end of the pull rod 14 returns to the inner cavity of the fixed box 13, the sampling needle body 5 is put into the installation box 1, the sampling needle body 5 extrudes the inclined plane of the adjusting block 23, the adjusting block 23 is moved to drive the push plate 21 to move, the push plate 21 is matched with the connecting rod 22 to drive the sliding sleeve 19 to extrude the second spring 20, the bottom of the sampling needle body 5 is contacted with the limit block 4, the needle body 6 enters the sampling tube 2, the pull ring 15 is loosened, the first spring 17 is reset, the knob 9 is rotated, the knob 9 is matched with the threaded rod 8 to drive the threaded sleeve 10 to move, the threaded sleeve 10 is matched with the fixed rod 11 to drive the control rod 12 to move, the control rod 12 is matched with the fixed box 13 to enable the pull rod 14 to be in contact with the sample injection needle body 5 and press the sample injection needle body 5, and the situation that the needle head is folded, bent or damaged due to unstable fixation in the using process is avoided.

Claims

1. The utility model provides a kind structure of advancing of gas chromatograph, includes install bin (1), its characterized in that: the bottom of the installation box (1) is communicated with a sample inlet pipe (2), both sides of the bottom of an inner cavity of the installation box (1) are fixedly connected with fixed blocks (3), the top of each fixed block (3) is fixedly connected with a limiting block (4), the top of the installation box (1) is provided with a sample inlet needle body (5), the bottom of the sample inlet needle body (5) penetrates through the inner cavity of the installation box (1) and is contacted with the limiting block (4), the bottom of the sample inlet needle body (5) is communicated with a needle body (6), the bottom of the needle body (6) extends to the inner cavity of the sample inlet pipe (2), both sides of the top of the inner cavity of the installation box (1) are fixedly connected with adjusting shells (7), the bottom of the inner cavity of the adjusting shells (7) is movably connected with a threaded rod (8), the top of the threaded rod (8) penetrates through the outer side of the installation box (1) and is fixedly, the surface of the threaded rod (8) and the inner cavity of the adjusting shell (7) are sleeved with threaded sleeves (10), one opposite sides of the two threaded sleeves (10) are fixedly connected with fixing rods (11), the top of each fixing rod (11) is fixedly connected with a control rod (12), the top of each control rod (12) penetrates through the outer side of the installation box (1) and is fixedly connected with a fixing box (13), one opposite side of each fixing box (13) is provided with a pull rod (14), one opposite side of each pull rod (14) penetrates through the fixing box (13) and is fixedly connected with a pull ring (15), the surface of each pull rod (14) and the inner cavity of each fixing box (13) are sleeved with a movable plate (16), one side, close to the pull ring (15), of the surface of each pull rod (14) and the movable plate (16) is sleeved with a first spring (17), the bottom of the adjusting shell (7) is fixedly connected with a slide rod (18, the bottom of the sliding rod (18) is fixedly connected with the inner wall of the installation box (1), sliding sleeves (19) are sleeved on the top and the bottom of the surface of the sliding rod (18), a second spring (20) is sleeved on the surface of the sliding rod (18) and between the two sliding sleeves (19), push plates (21) are arranged on the opposite sides of the two sliding rods (18), one side of the sliding sleeve (19) close to the push plate (21) is movably connected with a connecting rod (22), one side of the connecting rod (22) far away from the sliding sleeve (19) is movably connected with the push plates (21), the tops of the opposite sides of the two push plates (21) are fixedly connected with adjusting blocks (23), the bottoms of the opposite sides of the two push plates (21) are fixedly connected with adjusting rods (24), one side of the adjusting rod (24) far away from the push plate (21) penetrates through the inner cavity of the fixed block (3) and is fixedly connected with a movable block (25).

2. The sample injection structure of a gas chromatograph of claim 1, wherein: one side that push pedal (21) were kept away from in stopper (4) contacts with injection needle body (5), the first opening that uses with injection needle body (5) cooperation is seted up at the top of install bin (1).

3. The sample injection structure of a gas chromatograph according to claim 2, characterized in that: the surface of threaded rod (8) and the junction of adjusting shell (7) and install bin (1) all pass through bearing swing joint, the equal fixedly connected with slider in the opposite one side of two thread bush (10), the spout that uses with the slider cooperation is seted up to the inner wall of install bin (1).

4. The sample injection structure of a gas chromatograph according to claim 3, characterized in that: the surface of the pull rod (14) is fixedly connected with the movable plate (16), and second openings matched with the pull rod (14) for use are formed in the two sides of the fixed box (13).

5. The sample injection structure of a gas chromatograph according to claim 4, characterized in that: the top and the bottom of second spring (20) all with sliding sleeve (19) fixed connection, the junction of the opposite one side of two push pedal (21) and connecting rod (22) all through pivot swing joint, one side and the contact of injection needle body (5) of push pedal (21) are kept away from in regulating block (23).