阅读说明：本技术 一种油色谱辅助注射器 (Oil chromatogram auxiliary injector ) 是由 李训聿 顾绍君 佘晓楠 李东泽 鄯博元 于 2020-12-16 设计创作，主要内容包括：本发明公开了一种油色谱辅助注射器,包括注射器筒体、注射器活塞以及注射器推杆,所述注射器活塞安装在注射器筒体内部右端,所述注射器推杆安装在注射器筒体内部左侧,所述注射器推杆插入注射器活塞内部,本发明涉及气相色谱仪注射样气的进样系统辅助装置技术领域,本案设计内部结构简单,利用注射器筒体与辅助垂直器相嵌合,校正活塞注射器进样的方向始终保证竖直,利用限位螺栓限制注射器推杆的位移,以保证取样量始终保持1mL,助力弹簧帮助注射器活塞与注射器推杆始终受到弹簧弹性势能的限制,使其不易受到重力势能的影响而发生位移。(The invention discloses an oil chromatography auxiliary injector which comprises an injector cylinder, an injector piston and an injector push rod, wherein the injector piston is arranged at the right end in the injector cylinder, the injector push rod is arranged at the left side in the injector cylinder, and the injector push rod is inserted into the injector piston.)

1. An oil chromatography auxiliary injector comprises an injector cylinder (1), an injector piston (2) and an injector push rod (3), and is characterized in that the injector piston (2) is arranged at the right end inside the injector cylinder (1), the injector push rod (3) is arranged at the left side inside the injector cylinder (1), the injector push rod (3) is inserted into the injector piston (2), a limiting structure is arranged between the injector cylinder (1) and the injector push rod (3), and a guide assembly is arranged between the injector cylinder (1) and the injector push rod (3);

limit structure includes: a pair of first limit bolts (4), a pair of second limit bolts (5) and a first power spring (6);

the pair of first limiting bolts (4) are in threaded connection with the left side above the syringe barrel (1), the pair of second limiting bolts (5) are in threaded connection with the right side above the syringe barrel (1), and the first power spring (6) is sleeved on the syringe push rod (3).

2. The oil chromatography-assisted injector of claim 1, wherein: the guide assembly, including: a fixed frame (7), a guide rod (8) and a guide block (9);

the injection syringe is characterized in that the fixing frame (7) is fixedly arranged on the inner wall of the syringe barrel body (1), the guide rod (8) is arranged on the fixing frame (7), the guide block (9) is fixedly arranged on the syringe push rod (3), and the guide block (9) is connected to the guide rod (8) in a sliding mode.

3. The oil chromatography-assisted injector of claim 1, wherein: the right side of the injector piston (2) is communicated with an injector needle (10), the injector needle (10) penetrates through the inner wall of the right side of the injector barrel body (1), and a second power-assisted spring (11) is sleeved on the injector needle (10).

4. The oil chromatography-assisted injector of claim 1, wherein: the syringe barrel (1) is sleeved with an auxiliary vertical device (12).

5. The oil chromatography-assisted injector of claim 4, wherein: the inner diameter of the auxiliary vertical device (12) is the same as the outer diameter of the syringe barrel (1).

The oil chromatography-assisted injector of claim 1, wherein: the syringe piston (2) is internally tapered.

Technical Field

The invention relates to the technical field of sample injection system auxiliary devices for injecting sample gas by a gas chromatograph, in particular to an oil chromatograph auxiliary injector.

Background

At present, a gas chromatograph is a main application device for analyzing gas components by utilizing the characteristic that different components have different retention times in a fixed phase, and a sample injection system of the gas chromatograph is mostly manually injected with a syringe by testers. However, in the test process, the sampling level of the tester is uneven, so that the phenomena of different sampling amount, inconsistent injection angle and the like are caused, and the defects of high sampling failure rate, low reliability of the analysis sample result and the like are caused.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an oil chromatography auxiliary injector, which solves the problems of the prior background art

In order to achieve the purpose, the invention is realized by the following technical scheme: an oil chromatography auxiliary injector comprises an injector cylinder, an injector piston and an injector push rod, wherein the injector piston is arranged at the right end inside the injector cylinder, the injector push rod is arranged at the left side inside the injector cylinder, the injector push rod is inserted into the injector piston, a limiting structure is arranged between the injector cylinder and the injector push rod, and a guide assembly is arranged between the injector cylinder and the injector push rod;

limit structure includes: the pair of first limit bolts, the pair of second limit bolts and the first power-assisted spring;

the pair of first limiting bolts are in threaded connection with the left side above the syringe barrel, the pair of second limiting bolts are in threaded connection with the right side above the syringe barrel, and the first power-assisted spring is sleeved on the syringe push rod.

Preferably, the guide assembly includes: the device comprises a fixed frame, a guide rod and a guide block;

the fixed frame is fixedly arranged on the inner wall of the syringe barrel, the guide rod is arranged on the fixed frame, the guide block is fixedly arranged on the push rod of the syringe, and the guide block is connected to the guide rod in a sliding manner.

Preferably, the right side of the syringe piston is communicated with a syringe needle which penetrates through the inner wall of the right side of the syringe barrel, and a second power-assisted spring is sleeved on the syringe needle.

Preferably, the syringe barrel is sleeved with an auxiliary vertical device.

Preferably, the auxiliary vertical device has an inner diameter equal to the outer diameter of the syringe barrel.

Preferably, the syringe piston is internally tapered.

Advantageous effects

The invention provides an oil chromatography auxiliary injector. Possess following beneficial effect, the present case designs inner structure simple, utilize syringe barrel and supplementary perpendicular ware looks gomphosis, it is vertical all the time to rectify the direction that the piston syringe advances a kind, utilize the displacement of spacing bolt restriction syringe push rod, with guarantee that the sample volume remains 1mL all the time, helping hand spring help syringe piston and syringe push rod receive the restriction of spring elastic potential energy all the time, make it be difficult for receiving the influence of gravitational potential energy and take place the displacement, improve the defect that traditional syringe is difficult to judge the injection angle and can't guarantee standard injection volume, effectively improve and advance kind success rate and reliability.

Drawings

Fig. 1 is a schematic sectional structural view of a main view of an oil chromatography auxiliary injector according to the present invention.

Fig. 2 is a schematic front view of the auxiliary vertical device of the oil chromatography auxiliary injector.

Fig. 3 is a right-view structural schematic diagram of the oil chromatography auxiliary injector.

FIG. 4 is a schematic top view of an auxiliary vertical device of the oil chromatography auxiliary injector according to the present invention.

FIG. 5 is a schematic diagram of a top view of an auxiliary vertical device of the oil chromatography auxiliary injector according to the present invention.

In the figure: 1-syringe barrel; 2-a syringe piston; 3-injector push rod; 4-a first stop bolt; 5-a second limit bolt; 6-a first power spring; 7-a fixing frame; 8-a guide rod; 9-a guide block; 10-syringe needle; 11-a second assistor spring; 12-auxiliary verticality.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): the following working principles, detailed connecting means thereof, and the following main descriptions of the working principles and processes are well known in the art, and will be referred to by those skilled in the art for the specific connection and operation sequence of the components in this application.

Referring to fig. 1-5, the present invention provides a technical solution: an oil chromatography auxiliary injector comprises an injector cylinder 1, an injector piston 2 and an injector push rod 3, wherein the injector piston 2 is arranged at the right end inside the injector cylinder 1, the injector push rod 3 is arranged at the left side inside the injector cylinder 1, the injector push rod 3 is inserted into the injector piston 2, a limiting structure is arranged between the injector cylinder 1 and the injector push rod 3, and a guide assembly is arranged between the injector cylinder 1 and the injector push rod 3;

it should be noted that, the syringe barrel 1, the syringe piston 2 and the syringe push rod 3 which are arranged are matched with each other, so that a basic syringe can be realized, the syringe can be limited by the limiting structure which is arranged, the quantity taking range of the syringe is ensured, good guiding treatment can be carried out by the guiding assembly which is arranged, and the syringe push rod 3 can vertically move in the syringe barrel 1.

Limit structure includes: a pair of first limit bolts 4, a pair of second limit bolts 5 and a first assist spring 6;

a pair of first limit bolts 4 are in threaded connection with the left side above the syringe barrel 1, a pair of second limit bolts 5 are in threaded connection with the right side above the syringe barrel 1, and a first power spring 6 is sleeved on the syringe push rod 3;

the syringe plunger 3 can be moved to a position within the syringe barrel 1 to be restricted by the engagement of the pair of first stopper bolts 4 and the pair of second stopper bolts 5, and the syringe plunger 3 can be displaced without being influenced by gravitational potential energy by the first assist spring 6.

In a specific implementation, further, the guide assembly includes: a fixed frame 7, a guide rod 8 and a guide block 9;

the fixed frame 7 is fixedly arranged on the inner wall of the syringe cylinder 1, the guide rod 8 is arranged on the fixed frame 7, the guide block 9 is fixedly arranged on the syringe push rod 3, and the guide block 9 is connected to the guide rod 8 in a sliding manner;

the guide rod 8 is fixed by the fixing frame 7, and the syringe plunger 3 can be guided by moving the guide block 9 on the guide rod 8.

In the specific implementation process, further, the right side of the injector piston 2 is communicated with an injector needle 10, the injector needle 10 penetrates through the inner wall of the right side of the injector barrel 1, and the injector needle 10 is sleeved with a second power-assisted spring 11;

the syringe needle 10 is used for sampling and injecting, and the second power spring 11 is provided to prevent the syringe piston 2 from being displaced without being influenced by gravitational potential energy.

In the implementation process, furthermore, the syringe barrel 1 is sleeved with an auxiliary vertical device 12, and the auxiliary vertical device 12 is used for ensuring the vertical of the syringe.

In the specific implementation process, the inner diameter of the auxiliary vertical device 12 is the same as the outer diameter of the syringe barrel 1.

In a specific implementation, further, the syringe piston 2 has a conical shape inside.

The specific implementation mode is that firstly, after the injector push rod 3 is pushed to the end in the injector piston 2, the injector needle 10 is connected with a device filled with gas to be tested, then the injector push rod 3 is slowly loosened, the injector needle 10 can be pulled out when the injector push rod 3 is completely static, under the combined action of the pair of first limiting bolts 4, the pair of second limiting bolts 5 and the first boosting spring 6, the interior of the injector piston 2 is filled with 1mL of gas sample to be tested, the injector cylinder 1 and the auxiliary vertical device 12 are nested, the whole auxiliary device is pushed downwards while the injector push rod 3 is pressed, all the gas is injected into a chromatograph, and then the gas sample is pulled out.

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.

In summary, the present invention provides an oil chromatography auxiliary injector, which is designed to have a simple internal structure, wherein a syringe cylinder is embedded in an auxiliary vertical device, a sampling direction of a piston injector is corrected to be always vertical, a limit bolt is used to limit displacement of a syringe push rod so as to ensure that a sampling amount is always kept at 1mL, a booster spring helps the syringe piston and the syringe push rod to be always limited by elastic potential energy of the spring, so that the syringe piston and the syringe push rod are not easily influenced by gravitational potential energy to displace, defects that a conventional syringe is difficult to judge an injection angle and cannot ensure a standard injection amount are overcome, and sample injection success rate and reliability are effectively improved Modifications, substitutions and variations, and the scope of the invention is defined by the appended claims and their equivalents.