Special fixing device for gas phase / gas chromatography-mass spectrometry solid phase microextraction

Abstract

The utility model provides a special fixing device for gas phase / gas chromatography-mass spectrometry solid phase microextraction, which relates to the technical field of laboratory devices and comprises an extraction component, a sample bottle clamping component and a solid phase microextraction clamping component are arranged on the extraction component, and the extraction component comprises a base. The solid-phase microextraction clamping assembly comprises a mounting plate and a fastening bolt. According to the utility model, the air cylinder is controlled to extend synchronously, so that the clamping plate is pushed to move, the solid-phase microextraction parts are limited by the clamping plate, the solid-phase microextraction parts with different sizes can be effectively fixed, the practicability and the flexibility are improved, and after the solid-phase microextraction parts are clamped and fixed by the clamping plate, the solid-phase microextraction parts are clamped and fixed by the clamping plate. The limiting plates penetrate through the interiors of the single clamping plates, the springs are stressed and compressed by pulling the limiting rods upwards, after the clamping plates clamp and fix the solid-phase microextraction part, the limiting rods are loosened, the limiting rods penetrate through the interiors of the single limiting grooves through the elasticity of the springs, and limiting is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to laboratory device technical field especially, relates to a gas phase / gas quality combined solid -phase microextraction special fixing device. BACKGROUND

[0002] The solid -phase microextraction technology of gas phase / gas quality combination is a new solventless sample microextraction technology which integrates sampling, extraction, concentration and sampling. Compared with solid -phase extraction technology, solid -phase microextraction is simpler, more convenient to carry and lower in cost. In addition, it overcomes the shortcomings of low recovery rate and easy plugging of adsorbent pores. Therefore, it has become one of the most widely used methods in current sample pretreatment technology.

[0003] In the prior art, a solid -phase microextraction special fixing device is disclosed in Chinese patent (patent publication number CN213885076U), which comprises two hollow cylinders, and is made of transparent plastic. The upper hollow cylinder has an inner diameter slightly larger than the outer diameter of the solid -phase microextraction handle, no upper bottom surface, a circular hole is arranged at the center position of the lower bottom surface, and an external thread is arranged at the lower end. The lower hollow cylinder has an inner diameter slightly larger than the outer diameter of the headspace bottle, no upper bottom surface, a circular hole is arranged at the center position of the lower bottom surface, and a plurality of rectangular through holes are arranged on the side surface. An internal thread is arranged at the upper end and matched with the external thread. The technical scheme can realize the vertical fixation of the handle during the solid -phase microextraction operation process, prevent the inclination and pollution or damage of the extraction head, and avoid the influence on the ultrasonic and water bath auxiliary processes of solid -phase microextraction.

[0004] Although the solid -phase microextraction special fixing device in the above technical scheme has the functions of preventing the inclination and pollution or damage of the extraction head, and avoiding the influence on the ultrasonic and water bath auxiliary processes of solid -phase microextraction, the existing extraction fixing device is usually designed for a specific size of sample container, which has limitations and is not convenient for fixing containers of different sizes, thereby reducing the practicability. Therefore, we propose a solid -phase microextraction special fixing device for gas phase / gas quality combination. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the problem that the extraction fixing device in the prior art is usually designed for a specific size of sample container, which has limitations and is not convenient for fixing containers of different sizes, thereby reducing the practicability, and proposes a solid -phase microextraction special fixing device for gas phase / gas quality combination.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a gas phase / gas chromatography combined solid phase microextraction special fixing device, including extraction component, the extraction component is provided with sample bottle clamping component and solid phase microextraction clamping component, the extraction component includes the base, the solid phase microextraction clamping component includes mounting plate and fastening bolt, the fastening bolt is arranged at mounting plate one end, the top of mounting plate is installed with pneumatic cylinder against symmetry, the output of pneumatic cylinder is connected with clamping plate all, the side of one clamping plate is installed with limit stop, the side of another clamping plate is installed with connecting plate, the inside of connecting plate is penetrated with limit rod, the outside of limit rod is provided with spring.

[0007] Further, the sample bottle clamping component includes a turntable, a plurality of mounting slots are formed in the inside of the turntable, a plurality of electric telescopic columns are distributed on the inner wall of the mounting slots, and the output ends of the electric telescopic columns are connected with clamping plates.

[0008] Further, a plurality of limiting grooves are formed in the inside of the limit stop, and one end of the limit rod penetrates into the inside of a single limiting groove.

[0009] Further, a through groove is formed in the inside of the mounting plate, and a solid phase microextraction piece is installed in the inside of the through groove.

[0010] Further, a rotating shaft is connected to the bottom of the turntable, and a rotating motor is installed at the bottom of the rotating shaft.

[0011] Further, a single mounting slot is installed in the inside of the mounting plate.

[0012] Further, a mounting seat is installed on the side of the base, a support rod is threadedly connected in the inside of the mounting seat, and support columns are installed at the four corners of the bottom of the base.

[0013] Further, one end of the support rod penetrates into the inside of the mounting plate.

[0014] Compared with the prior art, the utility model has the advantages and positive effects that,

[0015] 1. In the utility model, the pneumatic cylinder is controlled to extend synchronously, which is conducive to moving the clamping plate, so that the clamping plate limits the solid phase microextraction piece, which is conducive to effectively fixing solid phase microextraction pieces of different sizes, improves the practicality and flexibility, when the clamping plate clamps and fixes the solid phase microextraction piece, the limit stop penetrates into the inside of a single clamping plate, the limit rod is pulled upward, the spring is compressed under stress, when the clamping plate clamps and fixes the solid phase microextraction piece, the limit rod penetrates into the inside of a single limiting groove by releasing the limit rod and using the elasticity of the spring, which is conducive to further limiting, and ensures the stability and reliability of clamping and fixing the solid phase microextraction piece.

[0016] 2、The utility model discloses, through the control electric telescopic column synchronous extension is favorable to make the clamping plate provides the clamping fixed role to sample bottle, guarantees the stability of sample bottle, avoids the sample bottle to shake, displacement or inclination etc. When extracting, to improve the extraction efficiency and the accuracy of data, and then favorable to guarantee the stability and reliability when extracting work, and through electric telescopic column and clamping plate to the sample bottle of different size is fixedly clamped, improved the flexibility of sample bottle clamping subassembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model;

[0018] Figure 2 Another angle structure schematic view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model;

[0019] Figure 3 A partial structure schematic view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model;

[0020] Figure 4 A partial structure schematic view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model;

[0021] Figure 5 A clamping subassembly structure schematic view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model;

[0022] Figure 6 Another angle clamping subassembly structure schematic view of a gas phase / gas chromatography combined solid phase microextraction special fixing device is provided for the utility model.

[0023] Legend: 1, extraction subassembly;101, base;102, mounting seat;103, support rod;104, support column;2, sample bottle clamping subassembly;201, turntable;202, rotating shaft;203, rotation motor;204, electric telescopic column;205, clamping plate;206, sample bottle;3, solid phase microextraction clamping subassembly;301, mounting plate;302, fastening bolt;303, air cylinder;304, clamping plate;305, limit plate;306, connecting plate;307, limit slot;308, limit rod;309, spring;311, solid phase microextraction piece. DETAILED DESCRIPTION

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1, such as Figures 1-6 As shown, this utility model provides a dedicated fixing device for solid-phase microextraction (SPE) using gas chromatography / mass spectrometry (GC / MS), including an extraction assembly 1, a sample vial clamping assembly 2, and a SPE clamping assembly 3. The extraction assembly 1 includes a base 101, and the SPE clamping assembly 3 includes a mounting plate 301 and a fastening bolt 302. The fastening bolt 302 is located at one end of the mounting plate 301. Cylinders 303 are symmetrically mounted on the top of the mounting plate 301, and the output ends of the cylinders 303 are connected to clamping plates 304. A limit plate 305 is installed on the side of one clamping plate 304, and a limit plate 305 is installed on the side of the other clamping plate 304. A connecting plate 306 is installed, with a limiting rod 308 passing through its interior. A spring 309 is provided on the outside of the limiting rod 308. Multiple limiting grooves 307 are opened inside the limiting plate 305, and one end of the limiting rod 308 passes through the interior of a single limiting groove 307. A through groove is opened inside the mounting plate 301, and a solid phase micro-extraction component 311 is installed inside the through groove. A mounting seat 102 is installed on the side of the base 101, and a support rod 103 is threadedly connected inside the mounting seat 102. Support columns 104 are installed at the four corners of the bottom of the base 101, and one end of the support rod 103 passes through the interior of the mounting plate 301.

[0027] The effect achieved by the whole embodiment 1 is that the support rod 103 is conveniently installed by being screwed in the inside of the mounting seat 102, the mounting plate 301 is installed outside the support rod 103, the fastening bolt 302 is used to limit the mounting plate 301, the height of the mounting plate 301 is adjusted according to the needs, the cylinder 303 is controlled to extend synchronously during use, and then the clamping plate 304 is pushed to move, so that the clamping plate 304 limits the solid-phase microextraction piece 311, different sizes of solid-phase microextraction pieces 311 are effectively fixed, the practicality and flexibility are improved, when the clamping plate 304 clamps and fixes the solid-phase microextraction piece 311, the limiting plate 305 penetrates into the inside of the single clamping plate 304, the limiting rod 308 is pulled upward, the spring 309 is compressed under stress, when the clamping plate 304 clamps and fixes the solid-phase microextraction piece 311, the limiting rod 308 penetrates into the inside of the single limiting groove 307 by the elasticity of the spring 309, further limiting is facilitated, and the stability and reliability of clamping and fixing the solid-phase microextraction piece 311 are ensured.

[0028] Embodiment 2, as shown in Figures 1-6 The difference between the embodiment and the embodiment 1 is that the sample bottle clamping assembly 2 includes a rotating disc 201, a plurality of installation grooves are formed in the inside of the rotating disc 201, a plurality of electric telescopic columns 204 are distributed on the inner wall of the installation groove, a clamping plate 205 is connected to the output end of the electric telescopic column 204, a rotating shaft 202 is connected to the bottom of the rotating disc 201, a rotating motor 203 is installed at the bottom of the rotating shaft 202, and a sample bottle 206 is installed in the inside of the single installation groove.

[0029] The effect achieved by the whole embodiment 2 is that the sample bottle 206 is placed in the inside of the installation groove, the clamping plate 205 provides clamping and fixing action on the sample bottle 206 by controlling the electric telescopic column 204 to extend synchronously, the stability of the sample bottle 206 is ensured, the sample bottle 206 is prevented from shaking, shifting or tilting during extraction, thereby improving the extraction efficiency and the accuracy of data, and then the stability and reliability during extraction work are ensured, different sizes of sample bottles 206 are clamped by the electric telescopic column 204 and the clamping plate 205, the flexibility of the sample bottle clamping assembly 2 is improved, the rotating shaft 202 is driven to rotate by the rotating motor 203, the rotating disc 201 is driven to rotate by the rotating shaft 202, and continuous operation is facilitated, and the working efficiency is improved.

[0030] Working principle: the sample bottle 206 is placed in the inside of the installation groove, through the synchronous extension of the control electric telescopic column 204, the clamping plate 205 is beneficial to the sample bottle 206 and provides clamping fixation, guarantees the stability of the sample bottle 206, the mounting plate 301 is installed on the outside of the support rod 103, the fastening bolt 302 is used to limit the installation plate 301, it is beneficial to the height of the installation plate 301 according to the demand adjustment, in use, through the synchronous extension of the control air cylinder 303, in turn, it is beneficial to push the clamping plate 304 and move, so that the clamping plate 304 is limited to the solid phase microextraction piece 311, it is beneficial to the effective fixation of different sizes of solid phase microextraction piece 311, when the clamping plate 304 is clamped and fixed to the solid phase microextraction piece 311, the limiting plate 305 is penetrated in the inside of single clamping plate 304, by pulling the limiting rod 308 upwards, the spring 309 is compressed under stress, when the clamping plate 304 is clamped and fixed to the solid phase microextraction piece 311, the limiting rod 308 is loosened and the elasticity of the spring 309 makes the limiting rod 308 penetrate in the inside of single limiting groove 307, it is beneficial to further limit, finally the fiber head of the solid phase microextraction piece 311 is placed in the inside of the sample bottle 206 and is extracted.

[0031] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can change or modify the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the protection scope of the present application technical scheme.

Claims

1. A dedicated immobilization device for solid-phase microextraction using gas chromatography / mass chromatography-mass spectrometry (GC / MS), comprising an extraction assembly (1), characterized in that: The extraction assembly (1) is provided with a sample bottle clamping assembly (2) and a solid phase microextraction clamping assembly (3). The extraction assembly (1) includes a base (101). The solid phase microextraction clamping assembly (3) includes a mounting plate (301) and a fastening bolt (302). The fastening bolt (302) is located at one end of the mounting plate (301). Cylinders (303) are symmetrically mounted on the top of the mounting plate (301). The output ends of the cylinders (303) are all connected to clamping plates (304). A limiting plate (305) is installed on the side of one clamping plate (304). A connecting plate (306) is installed on the side of the other clamping plate (304). A limiting rod (308) passes through the inside of the connecting plate (306). A spring (309) is provided on the outside of the limiting rod (308).

2. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 1, characterized in that: The sample bottle clamping assembly (2) includes a turntable (201), the turntable (201) has multiple mounting slots inside, and multiple electric telescopic columns (204) are distributed on the inner wall of the mounting slots. The output end of the electric telescopic column (204) is connected to a clamping plate (205).

3. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 1, characterized in that: The limiting plate (305) has multiple limiting grooves (307) inside, and one end of the limiting rod (308) passes through the inside of a single limiting groove (307).

4. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 1, characterized in that: The mounting plate (301) has a through groove inside, and a solid phase microextraction device (311) is installed inside the through groove.

5. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 2, characterized in that: The bottom of the turntable (201) is connected to a rotating shaft (202), and a rotating motor (203) is installed at the bottom of the rotating shaft (202).

6. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 2, characterized in that: A sample bottle (206) is installed inside each of the aforementioned mounting slots.

7. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 1, characterized in that: The base (101) has a mounting seat (102) installed on its side. The mounting seat (102) is internally threaded with a support rod (103). The base (101) has support columns (104) installed at its four bottom corners.

8. The solid-phase microextraction fixture for gas chromatography / mass chromatography-mass spectrometry (GC / MS) as described in claim 7, characterized in that: One end of the support rod (103) extends through the interior of the mounting plate (301).

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