CN211825878U

CN211825878U - Quantitative microsample injector for metrological verification

Info

Publication number: CN211825878U
Application number: CN202020313631.XU
Authority: CN
Inventors: 薛成
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-13
Filing date: 2020-03-13
Publication date: 2020-10-30
Anticipated expiration: 2030-03-13

Abstract

The utility model discloses a quantitative microsample injector for metrological verification, including base, liftable platform, outer sleeve and the microsample injector body, microsample injector body outside top is provided with the disc, disc outer wall both sides fixedly connected with sliding block, and fixedly connected with optical glass magnifying glass between the sliding block, outer sleeve inner wall both sides are provided with the slide rail, and sliding block opposite side and slide rail sliding connection, disc top fixedly connected with hand push rod, and hand push rod top run through the outer sleeve and extend to the outside top of outer sleeve, reset spring has been cup jointed to hand push rod outer wall top, the utility model relates to a metrological verification technical field. This metrological verification is with quantitative microsyringe, has improved microsyringe reading accuracy greatly, can effectively guarantee that the reading does not have angular deviation, adopts the location track push rod to guarantee the push rod power way direction, can effectively avoid the push rod direction not just, promotes microsyringe's life.

Description

Quantitative microsample injector for metrological verification

Technical Field

The utility model relates to a metrological verification technical field specifically is a microsyringe.

Background

A sample injector is a device that can quantitatively introduce an analysis sample into a column in a chromatography system. The sample injector comprises a plurality of specifications, wherein the micro sample injector can accurately measure a micro sample (the quantitative accuracy reaches microliter level), so the structure is more precise, and the price is more expensive. In the process of carrying out chromatographic tests, the sample injection is required to be fast and accurate, and the repeatability requirement is very high, so that the accuracy of the test can be ensured.

The push rod part of the existing microsyringe is slender, so that the push rod is deformed in a glass cavity or damages the wall of the glass cavity due to overlarge force and non-vertical force direction when a tester operates, the quantification of the microsyringe is out of alignment or damaged, and the microsyringe cannot be used continuously; the sampling precision of the microsyringe reaches microliter level, and because the microsyringe has small volume and large interval of adjacent scale values, the microsyringe is influenced by habits and operation levels of operators, and different operators have certain difference in repeated quantitative sampling; when the microsyringe extracts a sample, whether the microsyringe is vertical or not is completely judged by an operator, then scales are read, and due to the angle judgment error of the operator, the inclined position with a certain angle is considered as the vertical direction, so that a certain reading error is easily caused, and the quantitative deviation is caused; when the micro-sampler is used for extracting samples, the samples are generally extracted repeatedly and continuously for a plurality of times so as to remove air and accurately quantify the air. This process is totally dependent on manual operation, and is too loaded down with trivial details, and the ration of advancing the appearance at every turn also can not be completely unanimous because of the manual observation reason, and certain deviation exists in the repeatability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a ration microsample injector is used in metrological verification has solved current microsample injector and has damaged easily, measure the problem that error and complex operation appear easily inadequately accurate.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a quantitative microsyringe for metrological verification comprises a base, a liftable platform, an outer sleeve and a microsyringe body, wherein a disc is arranged above the outer side of the microsyringe body, sliding blocks are fixedly connected to two sides of the outer wall of the disc, an optical glass magnifier is fixedly connected between the sliding blocks, sliding rails are arranged on two sides of the inner wall of the outer sleeve, the other side of each sliding block is slidably connected with the corresponding sliding rail, a hand push rod is fixedly connected to the upper side of the disc, the top end of the hand push rod penetrates through the outer sleeve and extends to the upper part of the outer sleeve, a reset spring is sleeved above the outer wall of the hand push rod, a hand push rod cap is fixedly connected to the top end of the hand push rod, a limiting device is fixedly connected to one side of the outer wall of the outer sleeve and comprises, and the screw rod is connected with the inner cavity of the adjusting rod through threads, the bottom end of the outer wall of the screw rod is fixedly connected with a first gear, one side of the first gear is meshed with a second gear, the other side of the second gear is fixedly connected with an adjusting nut through rotation, the adjusting nut is positioned on one side of the outer wall of the quantitative barrel, and the top end of the adjusting rod is fixedly connected with a limiting rod.

Preferably, liftable platform top fixedly connected with anchor clamps, anchor clamps include splint, clamping screw and knob, and splint link to each other with the knob through clamping screw, the inside sample bottle that can dismantle of anchor clamps is connected with.

Preferably, the liftable platform comprises an upper fixed plate, a lower fixed plate, a telescopic cylinder and a telescopic rod, the telescopic rod is located inside the telescopic cylinder, the telescopic rod is connected with the inner wall of the telescopic cylinder in a sliding mode, and the telescopic cylinder is connected with the telescopic rod through an adjusting bolt.

Preferably, a level gauge is installed on one side of the base, and a horizontal adjusting nut is installed at the bottom end of the outer wall of the base.

Preferably, the outer sleeve is made of transparent PP materials.

Advantageous effects

The utility model provides a metrological verification is with quantitative microsyringe. The method has the following beneficial effects:

(1) compared with a common micro sample injector, the quantitative micro sample injector for metrological verification has the advantages that the quantitative precision of the scale is greatly improved (the reading precision is improved) by utilizing the optical glass magnifier.

(2) This metrological verification uses quantitative microsyringe, adopts horizontal adjusting device base and vertical structure design, can effectively guarantee that the reading does not have angular deviation.

(3) This metrological verification uses quantitative trace injector, adopts the location track push rod to guarantee the push rod power way direction, avoids the push rod direction just, promotes the life of trace injector.

(4) This metrological verification is with quantitative trace injector adopts reset spring structure and stop device that kick-backs, only needs to press and slowly send and can realize exhausting and accurate sample, has improved work efficiency promptly, has fine repeatability again.

Drawings

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

FIG. 2 is a schematic structural view of the limiting device of the present invention;

fig. 3 is the schematic diagram of the liftable platform structure of the utility model.

In the figure: 1. a base; 2. a lifting platform; 3. an outer sleeve; 4. a micro sample injector body; 5. a disc; 6. a slider; 7. an optical glass magnifier; 8. a slide rail; 9. pressing the push rod by hand; 10. a return spring; 11. pressing the push rod cap by hand; 12. a limiting device; 13. a dosing cylinder; 14. adjusting a rod; 15. a screw; 16. a first gear; 17. a second gear; 18. adjusting the nut; 19. a limiting rod; 20. a clamp; 21. a splint; 22. clamping the screw rod; 23. a knob; 24. a sample bottle; 25. an upper fixing plate; 26. a lower fixing plate; 27. a telescopic cylinder; 28. a telescopic rod; 29. a level gauge; 30. and a horizontal adjusting nut.

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. 1-3, the present invention provides a technical solution: a quantitative microsyringe for metrological verification comprises a base 1, a lifting platform 2, an outer sleeve 3 and a microsyringe body 4, wherein a disc 5 is arranged above the outer side of the microsyringe body 4, sliding blocks 6 are fixedly connected with two sides of the outer wall of the disc 5, an optical glass magnifier 7 is fixedly connected between the sliding blocks 6, the quantitative precision is greatly improved (the reading precision is improved) by adopting the magnification scale, sliding rails 8 are arranged on two sides of the inner wall of the outer sleeve 3, the other side of the sliding block 6 is slidably connected with the sliding rails 8, a push rod of a positioning sliding rail 8 is adopted to ensure the direction of a push rod force path, the direction of the push rod is prevented from being incorrect, a hand push rod 9 is fixedly connected above the disc 5, the top end of the hand push rod 9 penetrates through the outer sleeve 3 and extends to the upper part of the outer part of, outer sleeve 3 outer wall one side fixedly connected with stop device 12, stop device 12 includes ration barrel 13, adjust pole 14 and screw rod 15, it all is located the inside of ration barrel 13 to adjust pole 14 and screw rod 15, screw rod 15 is located and adjusts the pole 14 inside, and screw rod 15 passes through threaded connection with adjusting the pole 14 inner chamber, screw rod 15 outer wall bottom fixedly connected with first gear 16, the meshing of first gear 16 one side is connected with second gear 17, second gear 17 opposite side is through rotating fixedly connected with adjusting nut 18, and adjusting nut 18 is located ration barrel 13 outer wall one side, adjust pole 14 top fixedly connected with gag lever post 19, adopt reset spring 10 resilience structure and stop device 12, only need press slow sending and can realize exhausting and accurate sample, work efficiency has been improved, and is fine again, liftable platform 2 top fixedly connected with anchor clamps 20, anchor clamps 20 include splint 21, Clamping screw 22 and knob 23, and splint 21 links to each other with knob 23 through clamping screw 22, 20 inside detachably connected with sample bottle 24 of anchor clamps, but lifting platform 2 includes upper fixed plate 25, bottom plate 26, telescopic cylinder 27 and telescopic link 28, telescopic link 28 is located telescopic cylinder 27 inside, and telescopic link 28 and telescopic cylinder 27 inner wall sliding connection, link to each other through adjusting bolt between telescopic cylinder 27 and the telescopic link 28, base 1 side-mounting has spirit level 29, horizontal adjusting nut 30 is installed to base 1 outer wall bottom, adopt horizontal adjusting device base 1 and vertical structure design, can effectively guarantee that the reading does not have angular deviation, outer sleeve utensil 3 bodies is made for transparent PP material.

When the micro sample injector works, the outer sleeve 3 is made of transparent PP material, only one side of the magnifier is not sealed, the bottom end of the outer sleeve 3 is sealed and flat, only a small hole for a needle point to pass through is reserved at the bottom, the needle point of the internal micro sample injector body 4 is exposed, a micro sample injection needle (with scales) is fixed below the inner part of the outer sleeve 3, the needle point is exposed outside through the small hole, the tail end of an original push rod of the micro sample injector body 4 is connected with the disc 5, one side of the disc 5 is connected with the slide block 6 of the magnifier, and the other side of the; two sliding rails 8 are arranged on two sides inside the outer sleeve 3 and used for positioning the square optical glass magnifier 7 to move, scales are arranged on the optical glass magnifier 7, the scales of the micro sample injection needle can be amplified and then accurately set, the right side of a sliding block 6 of the magnifier is connected with the disc 5, when a push rod 9 is pressed by hand to move, the sliding block 6 of the magnifier synchronously moves, and the liquid position of the micro sample injection needle is ensured to be always in the visual field of the optical glass magnifier 7; a limiting device 12 is arranged on one side of the outer sleeve 3, the screw rod 15 is rotated through an adjusting nut 18, so that the adjusting rod 14 can move up and down to synchronously drive the limiting rod 19 to move up and down, and the limiting position is determined according to the scale reading of the magnifier; the base 1 is provided with a level meter 29 with four feet and a horizontal adjusting nut 30, the middle of the base 1 is provided with a sample bottle 24 fixing device (provided with a clamp), the sample bottle 24 is connected with the lifting platform 2 through the clamp 20, the upper and lower height of the sample bottle 24 can be adjusted according to the needle point length of the micro-sample injector body 4, and sampling is convenient. When the micro sample injection needle is used, the lifting platform 2 is firstly adjusted to the lowest position, the sample bottle 24 is fixed on the clamp 20, and the adjusting nut 18 of the limiting device 12 is adjusted to enable the micro sample injection needle push rod to be located at the zero position (the reset spring 10 supports against the hand-press push rod 9, and the micro sample injection needle push rod can be accurately located by matching with the limiting rod 19). The base 1 is leveled, the sleeve needle is downwards inserted into the base 1, the needle point enters the sample bottle 24 (the telescopic cylinder 27 and the telescopic rod 28 are adjusted as required so as to adjust the lifting platform 2 to reach the optimal position), the adjusting nut 18 of the limiting device 12 is adjusted until the required quantitative scale value is observed in the magnifier, and the quantification is finished. When in use, the push rod is pressed downwards to the bottom and then slowly loosened at a constant speed, the push rod 9 is pressed by hand under the action of the return spring 10 to automatically rise to the quantitative scale of the limiting rod 19 and stop, and the air can be removed by repeatedly pressing for a plurality of times, and the accurate quantitative sampling can be realized.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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

1. The utility model provides a quantitative microsample injector for metrological verification, includes base (1), liftable platform (2), outer sleeve (3) and microsample injector body (4), its characterized in that: be provided with disc (5) above microsample feeder body (4) outside, disc (5) outer wall both sides fixedly connected with sliding block (6), and fixedly connected with optical glass magnifying glass (7) between sliding block (6), outer sleeve (3) inner wall both sides are provided with slide rail (8), and sliding block (6) opposite side and slide rail (8) sliding connection, disc (5) top fixedly connected with hand push rod (9), and hand push rod (9) top run through outer sleeve (3) and extend to outer sleeve (3) outside top, reset spring (10) have been cup jointed to hand push rod (9) outer wall top, hand push rod (9) top fixedly connected with hand push rod cap (11), outer sleeve (3) outer wall one side fixedly connected with stop device (12), stop device (12) are including ration barrel (13) Adjust pole (14) and screw rod (15), it all is located quantitative barrel (13) inside to adjust pole (14) and screw rod (15), screw rod (15) are located and adjust pole (14) inside, and screw rod (15) pass through threaded connection with regulation pole (14) inner chamber, screw rod (15) outer wall bottom fixedly connected with first gear (16), first gear (16) one side meshing is connected with second gear (17), second gear (17) opposite side is through rotating fixedly connected with adjusting nut (18), and adjusting nut (18) are located quantitative barrel (13) outer wall one side, adjust pole (14) top fixedly connected with gag lever post (19).

2. The quantitative microsyringe for a metrological assay as claimed in claim 1, wherein: liftable platform (2) top fixedly connected with anchor clamps (20), anchor clamps (20) are including splint (21), clamping screw (22) and knob (23), and splint (21) link to each other with knob (23) through clamping screw (22), anchor clamps (20) inside can be dismantled and be connected with sample bottle (24).

3. The quantitative microsyringe for a metrological assay as claimed in claim 1, wherein: liftable platform (2) include upper fixed plate (25), bottom plate (26), a flexible section of thick bamboo (27) and telescopic link (28), telescopic link (28) are located flexible section of thick bamboo (27) inside, and telescopic link (28) and flexible section of thick bamboo (27) inner wall sliding connection, link to each other through adjusting bolt between flexible section of thick bamboo (27) and telescopic link (28).

4. The quantitative microsyringe for a metrological assay as claimed in claim 1, wherein: a level gauge (29) is installed on one side of the base (1), and a horizontal adjusting nut (30) is installed at the bottom end of the outer wall of the base (1).

5. The quantitative microsyringe for a metrological assay as claimed in claim 1, wherein: the outer sleeve (3) is made of transparent PP materials.