CN210863645U - Trace sampling device for gas chromatography - Google Patents

Abstract

The utility model belongs to the technical field of gas chromatography detects technique and specifically relates to a trace sampling device for gas chromatography, including first base, the inside sliding connection of first base has first slide bar, and the right side welding of first slide bar has the blowing structure, and the positive of blowing structure is installed limit structure, and the bottom of blowing structure is equipped with the inlet pipe, and the right side welding of blowing structure has the second slide bar, and the bottom sliding connection of second slide bar has the second base, and the right side fixed mounting of second slide bar has the tooth, and the right side of tooth is equipped with the power structure that drives the blowing structure and carry out the removal; the utility model discloses an adopt and be in the blowing structure of same axis with the inlet pipe to in the blowing operation of carrying on that the feeding syringe needle can be accurate, and come to effectively press from both sides the feeding syringe needle through limit structure and get, stability when reinforcing feeding syringe needle removes, come to carry out accurate control to the distance of marcing of feeding syringe needle through power structure at last.

Description

Trace sampling device for gas chromatography

Technical Field

The utility model relates to a gas chromatography detects technical field, specifically is a trace sampling device for gas chromatography.

Background

The gas chromatograph is an important instrument in the field of chromatographic analysis, is widely applied to the fields of life science, material science, environmental protection, medical science, food safety and the like, is a most common analytical chemical method in various fields as a representative of modern analytical instruments after development of more than half a century, and plays an extremely important role in many analytical laboratories.

When the gas chromatograph advances a sample at every turn, the syringe needle of microsyringe gets into the degree of depth unanimity of gas chromatograph's introduction port, just can make each group data that successively record have good reproducibility, and chinese patent network discloses "a microinjection device for gas chromatograph", and the patent number is: CN207571089U, this patent is through "set up the inlet on gas chromatograph, the inlet both sides are provided with the supporting legs, the supporting legs overcoat is equipped with sliding sleeve … … that can reciprocate the utility model provides a scheme enables the axis of syringe needle unanimous with the inlet all the time, also can regulate and control the degree of depth that the syringe needle got into the inlet for the accuracy and the reproducibility of experiment have all been showing and have improved, this patent can make the axis of syringe needle unanimous with the inlet all the time, but can't carry out accurate control to the distance of marcing of syringe needle, and can't carry out effective fixed clamp to the feeding syringe needle and get, for this, we have provided a trace sampling device for gas chromatography, with the problem of solving above-mentioned content existence.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a trace sampling device for gas chromatography possesses the feeding accuracy, can effectively press from both sides the feeding syringe needle and get to can carry out the advantage of accurate control to the syringe needle distance of marcing, it is inaccurate to have solved current trace sampling device for gas chromatography feeding, can't effectively press from both sides the feeding syringe needle and get, can't carry out the problem of accurate control to the distance of marcing of syringe needle.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a trace sampling device for gas chromatography, includes first base, the inside sliding connection of first base has first slide bar, the right side welding of first slide bar has the blowing structure, limit structure is installed in the front of blowing structure, the bottom of blowing structure is equipped with the inlet pipe, the right side welding of blowing structure has the second slide bar, the bottom sliding connection of second slide bar has the second base, the right side fixed mounting of second slide bar has tooth, the right side of tooth is equipped with the power structure that the drive blowing structure carried out the removal.

Preferably, the blowing structure includes the blowing case, the blowing hole has been seted up to the inside of blowing case, the centre of a circle in blowing hole and the centre of a circle of inlet pipe are in same axis, the inside fixed mounting in blowing hole has first stopper.

Preferably, limit structure includes the spacing case, the back of spacing case and the front welding of blowing case, the inside of spacing case is equipped with the pull rod, the surface cover of pull rod is equipped with the spring, the front of pull rod extends to the outside of spacing case, the back welding of pull rod has the movable plate, the back fixed mounting of movable plate has the second stopper, the back of second stopper extends to the inside in blowing hole.

Preferably, the front surface of the spring is bolted with the inside of the limit box, the back surface of the spring is bolted with the front surface of the moving plate, and the first limit block and the second limit block are symmetrically arranged.

Preferably, the power structure includes the backup pad, the inside of backup pad is rotated and is connected with first rotary rod, the surface joint of first rotary rod has the action wheel, the surface of action wheel is connected with from the driving wheel through belt drive, the inside of following the driving wheel is rotated and is connected with the second rotary rod, the both ends of second rotary rod are all rotated and are connected with the support frame, the back from the driving wheel is equipped with the gear, the inside of gear and the surface joint of second rotary rod, the left side of gear and the right side meshing of tooth.

Preferably, the diameter of the driving wheel is smaller than that of the driven wheel, and the diameter of the driven wheel is smaller than that of the gear.

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

the utility model discloses an adopt and be in the blowing structure of same axis with the inlet pipe to in the blowing operation of carrying on that the feeding syringe needle can be accurate, and come to effectively press from both sides the feeding syringe needle through limit structure and get, stability when reinforcing feeding syringe needle removes, come to carry out accurate control to the distance of marcing of feeding syringe needle through power structure at last.

Drawings

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

FIG. 2 is a schematic top view of a partial structure of the present invention;

FIG. 3 is a schematic top sectional view of a partial structure of the present invention;

fig. 4 is a partially enlarged view of a portion a in fig. 3 according to the present invention.

In the figure: 1. a first base; 2. a first slide bar; 3. a material discharging structure; 31. a material placing box; 32. a discharge hole; 33. a first stopper; 4. a limiting structure; 41. a limiting box; 42. a pull rod; 43. a spring; 44. moving the plate; 45. a second limiting block; 5. a feed pipe; 6. a second slide bar; 7. a second base; 8. teeth; 9. a power structure; 91. a support plate; 92. a first rotating rod; 93. a driving wheel; 94. a belt; 95. a driven wheel; 96. a second rotating rod; 97. a support frame; 98. a gear.

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, a micro-sampling device for gas chromatography comprises a first base 1, a first slide bar 2 is slidably connected inside the first base 1, a material placing structure 3 is welded on the right side of the first slide bar 2, a limiting structure 4 is installed on the front surface of the material placing structure 3, a feeding pipe 5 is arranged at the bottom of the material placing structure 3, a second slide bar 6 is welded on the right side of the material placing structure 3, a second base 7 is slidably connected to the bottom of the second slide bar 6, a tooth 8 is fixedly installed on the right side of the second slide bar 6, a power structure 9 for driving the material placing structure 3 to move is arranged on the right side of the tooth 8, the feeding structure 3 which is arranged on the same axis with the feeding pipe 5 is adopted, so that the feeding needle can accurately perform feeding operation, and come to effectively press from both sides the feeding syringe needle through limit structure 4 and get, stability when reinforcing feeding syringe needle removes, come to carry out accurate control to the distance of marcing of feeding syringe needle through power structure 9 at last.

In this embodiment, blowing structure 3 includes blowing case 31, and blowing hole 32 has been seted up to the inside of blowing case 31, and the centre of a circle of blowing hole 32 is in same axis with the centre of a circle of inlet pipe 5, and the inside fixed mounting of blowing hole 32 has first stopper 33, uses through the cooperation of blowing case 31, blowing hole 32 and first stopper 33, can place the feeding syringe needle.

In this embodiment, limit structure 4 includes spacing box 41, the back of spacing box 41 and the front welding of blowing case 31, the inside of spacing box 41 is equipped with pull rod 42, the surface cover of pull rod 42 is equipped with spring 43, the front of pull rod 42 extends to the outside of spacing box 41, the back welding of pull rod 42 has movable plate 44, the back fixed mounting of movable plate 44 has second stopper 45, the back of second stopper 45 extends to the inside of blowing hole 32, through spacing box 41, pull rod 42, spring 43, movable plate 44 and second stopper 45's cooperation is used, can carry out elasticity spacingly to the feeding syringe needle, strengthen the stability of feeding syringe needle.

In this embodiment, the front surface of the spring 43 is bolted to the inside of the limiting box 41, the back surface of the spring 43 is bolted to the front surface of the moving plate 44, and the first limiting block 33 and the second limiting block 45 are symmetrically disposed, so that the feeding needle can be fixed at the center of the discharging hole 32.

In this embodiment, power structure 9 includes backup pad 91, the inside of backup pad 91 is rotated and is connected with first rotary rod 92, the surface joint of first rotary rod 92 has action wheel 93, the surface of action wheel 93 is connected with from driving wheel 95 through the transmission of belt 94, the inside of following driving wheel 95 is rotated and is connected with second rotary rod 96, the both ends of second rotary rod 96 are all rotated and are connected with support frame 97, be equipped with gear 98 from the back of driving wheel 95, the inside of gear 98 and the surface joint of second rotary rod 96, the left side of gear 98 and the right side meshing of tooth 8, through backup pad 91, first rotary rod 92, action wheel 93, belt 94, follow driving wheel 95, second rotary rod 96, support frame 97 and the cooperation of gear 98 are used, can carry out the accurate removal to drop feed structure 3.

In this embodiment, the diameter of action wheel 93 is less than the diameter from driving wheel 95, and the diameter from driving wheel 95 is less than the diameter of gear 98, makes the staff can carry out the accurate adjustment to the rotation distance from driving wheel 95 through action wheel 93 and the diameter difference from driving wheel 95 to carry out the accurate adjustment to the displacement distance of second slide bar 6, finally carry out the accurate adjustment to the distance of marcing of feeding needle.

When the feeding needle is used, a feeding needle is placed in the discharging hole 32, then the pull rod 42 is stretched, the moving of the pull rod 42 drives the moving plate 44 to extrude the spring 43, then the second limit block 45 moves, then the feeding needle is placed between the first limit block 33 and the second limit block 45, then the pull rod 42 is slowly loosened, the spring 43 pushes the moving plate 44 to move, then the second limit block 45 and the first limit block 33 fix the feeding needle, then the first rotating rod 92 is slowly rotated, the rotation of the first rotating rod 92 drives the driving wheel 93 to rotate, the driving wheel 93 drives the driven wheel 95 to rotate through the belt 94, the rotation of the driven wheel 95 drives the second rotating rod 96 to rotate, the rotation of the second rotating rod 96 drives the gear 98 to rotate, the rotation of the gear 98 drives the second sliding rod 6 to move downwards, and then the discharging structure 3 and the first sliding rod 2 to move downwards, the feed needle then slowly enters the feed tube 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a trace sampling device for gas chromatography, includes first base (1), its characterized in that: the inside sliding connection of first base (1) has first slide bar (2), the right side welding of first slide bar (2) has blowing structure (3), limit structure (4) are installed in the front of blowing structure (3), the bottom of blowing structure (3) is equipped with inlet pipe (5), the right side welding of blowing structure (3) has second slide bar (6), the bottom sliding connection of second slide bar (6) has second base (7), the right side fixed mounting of second slide bar (6) has tooth (8), the right side of tooth (8) is equipped with power structure (9) that drive blowing structure (3) carry out the removal.

2. A micro-sampling device for gas chromatography according to claim 1, characterized in that: the discharging structure (3) comprises a discharging box (31), a discharging hole (32) is formed in the discharging box (31), the circle center of the discharging hole (32) and the circle center of the feeding pipe (5) are located on the same axis, and a first limiting block (33) is fixedly installed in the discharging hole (32); limit structure (4) include limit box (41), the back of limit box (41) and the front welding of blowing case (31), the inside of limit box (41) is equipped with pull rod (42), the surface cover of pull rod (42) is equipped with spring (43), the front of pull rod (42) extends to the outside of limit box (41), the back welding of pull rod (42) has movable plate (44), the back fixed mounting of movable plate (44) has second stopper (45), the back of second stopper (45) extends to the inside of blowing hole (32).

3. A micro-sampling device for gas chromatography according to claim 2, characterized in that: the front surface of the spring (43) is bolted with the inner part of the limit box (41), the back surface of the spring (43) is bolted with the front surface of the moving plate (44), and the first limit block (33) and the second limit block (45) are symmetrically arranged.

4. A micro-sampling device for gas chromatography according to claim 1, characterized in that: power structure (9) are including backup pad (91), the inside rotation of backup pad (91) is connected with first rotary rod (92), the surface joint of first rotary rod (92) has action wheel (93), the surface of action wheel (93) is connected with from driving wheel (95) through belt (94) transmission, the inside rotation from driving wheel (95) is connected with second rotary rod (96), the both ends of second rotary rod (96) all rotate and are connected with support frame (97), the back from driving wheel (95) is equipped with gear (98), the inside of gear (98) and the surface joint of second rotary rod (96), the left side of gear (98) and the right side meshing of tooth (8).

5. A micro-sampling device for gas chromatography according to claim 4, characterized in that: the diameter of the driving wheel (93) is smaller than that of the driven wheel (95), and the diameter of the driven wheel (95) is smaller than that of the gear (98).

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