Novel pretreatment device for gas chromatograph-mass spectrometer sample

Abstract

The utility model relates to the technical field of a gas chromatograph-mass spectrometer, in particular to a novel pretreatment device for a gas chromatograph-mass spectrometer sample, which is characterized in that a pretreatment box is fixedly connected above a gas chromatograph-mass spectrometer body, a feeding pipe is fixedly connected above the pretreatment box, a feeding cavity is formed in the pretreatment box, ball moving grooves are formed in two sides of the feeding cavity, and a feeding pipe is fixedly connected above the ball moving grooves. A screening plate is arranged in the feeding cavity, screening holes are formed in the surface of the screening plate, movable balls are arranged on the two sides of the screening plate, a pull rod is fixed to the end face of the screening plate, side square blocks are fixedly connected to the two sides of the pretreatment box, sliding grooves are formed in the side square blocks, side sliding blocks are slidably connected into the sliding grooves, and the side sliding blocks are fixedly connected to a door plate. Limiting assemblies are arranged on the surfaces of the side square blocks. The pretreatment device disclosed by the utility model has the beneficial effects that the problem that subsequent sample detection is possibly influenced because a detection sample cannot be recycled after solid detection is completed by the existing pretreatment device is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography-mass spectrometry, in particular to a novel sample pretreatment device for gas chromatography-mass spectrometry. Background Art

[0002] GC-MS is an instrument that combines gas chromatograph and mass spectrometer. It is widely used in the separation and identification of complex components. It has the high resolution of GC and the high sensitivity of mass spectrometry. It is an effective tool for the qualitative and quantitative analysis of drugs and metabolites in biological samples. GC-MS can be used to detect volatile solids or solids that can be dissolved in solvents to form solutions.

[0003] In the prior art, before the gas chromatography-mass spectrometry (GC-MS) is used to detect samples, it is usually necessary to perform a pretreatment operation on the samples. When detecting solids, samples of suitable size are generally selected for screening and detection.

[0004] However, the existing pretreatment devices are often unable to recover the test samples after the solid detection is completed, which may affect the subsequent sample detection. Therefore, we need a gas chromatography-mass spectrometer sample pretreatment device. To this end, the utility model proposes a new gas chromatography-mass spectrometer sample pretreatment device to solve the above problem. Utility Model Content

[0005] The utility model aims to provide a novel sample pretreatment device for gas chromatography-mass spectrometry to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel sample pretreatment device for gas chromatography-mass spectrometry, the novel sample pretreatment device for gas chromatography-mass spectrometry comprising: a gas chromatography-mass spectrometry body, a pretreatment box fixedly connected to the top of the gas chromatography-mass spectrometry body, a feed pipe fixedly connected to the top of the pretreatment box, a feeding chamber provided inside the pretreatment box, ball movable grooves provided on both sides of the feeding chamber, a screening plate provided in the feeding chamber, screening holes provided on the surface of the screening plate, movable balls provided on both sides of the screening plate, and a pull rod fixed to the end surface of the screening plate;

[0007] The side blocks are fixedly connected to the two sides of the pretreatment box, a slide groove is provided inside the side blocks, a side slider is slidably connected in the slide groove, the side slider is fixedly connected to the door panel, and a limit position component is arranged on the surface of the side blocks.

[0008] Preferably, the outer wall of the feed pipe is provided with an external thread, a sealing cover is installed on the feed pipe, and the sealing cover and the feed pipe are threadedly connected.

[0009] Preferably, the movable ball and the ball movable groove are matched, a plurality of screening holes are provided, the plurality of screening holes are evenly distributed on the surface of the screening plate, and the feeding cavity is communicated with the gas chromatography-mass spectrometer body.

[0010] Preferably, two pull rods are provided, the two pull rods are symmetrically distributed about the center line of the screening plate, and the surfaces of the pull rods are provided with anti-slip patterns.

[0011] Preferably, the limiting assembly includes an insertion rod, a spring, a driving member and a handle, a first through hole is opened on the surface of the side block, the insertion rod is inserted into the first through hole, and the driving member is fixed to the end surface of the insertion rod.

[0012] Preferably, a spring is sleeved on the surface of the insertion rod, one end of the spring is fixedly connected to the driving member, and the other end of the spring is fixedly connected to the side block. A handle is fixed on the surface of the driving member, and a rubber pad is fixed inside the handle. The rubber pads are provided in several groups, and the several groups of rubber pads are evenly distributed inside the handle.

[0013] Preferably, the upper and lower ends of the side sliding block are both provided with second through holes, the insertion rod can be inserted into the second through holes, and a handle is fixed to the upper end of the door panel.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a novel sample pretreatment device for gas chromatography-mass spectrometer, which utilizes a set limit assembly to facilitate limiting the door panel. The door panel is moved up by toggling a handle, and then the limit assembly is used to limit the position to prevent the door panel from loosening. Then the vertical rod is manually pulled to pull the screening plate out of the feeding chamber, so as to facilitate the recovery of the sample remaining on the screening plate. After the recovery is completed, the screening plate is installed into the feeding chamber, and the movable balls roll in the movable ball grooves to provide guidance and support. Then the limit assembly is used to release the limit, and the door panel is moved down, and then the limit assembly is used to limit the position to prevent the door panel from loosening. In this way, the problem that the existing pretreatment device is often unable to recover the test sample after the solid test is completed, which may affect the subsequent sample test is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the screening plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the door panel structure of the utility model

[0020] Figure 5 for Figure 2 A magnified view of the structure in the middle.

[0021] In the figure: 1, cover; 2, feed pipe; 3, pretreatment box; 4, GC-MS instrument body; 5, door panel; 6, limit assembly; 7, handle; 8, external thread; 9, side slide groove; 10, side block; 11, feeding chamber; 12, handle; 13, screening plate; 14, ball movable groove; 15, screening hole; 16, movable ball; 17, pull rod; 18, anti-slip pattern; 19, side slider; 20, second through hole; 21, first through hole; 22, plug rod; 23, spring; 24, driving member; 25, rubber pad. DETAILED DESCRIPTION

[0022] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present utility model, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other. Embodiment 1

[0026] See also Figures 1 to 5 The utility model provides a technical solution: a novel sample pretreatment device for gas chromatography-mass spectrometry, the novel sample pretreatment device for gas chromatography-mass spectrometry comprising: a gas chromatography-mass spectrometry body 4, a pretreatment box 3 is fixedly connected to the top of the gas chromatography-mass spectrometry body 4, a feed pipe 2 is fixedly connected to the top of the pretreatment box 3, a feeding chamber 11 is provided inside the pretreatment box 3, ball movable grooves 14 are provided on both sides of the feeding chamber 11, a screening plate 13 is provided in the feeding chamber 11, screening holes 15 are provided on the surface of the screening plate 13, movable balls 16 are provided on both sides of the screening plate 13, and a pull rod 17 is fixed to the end surface of the screening plate 13;

[0027] Side blocks 10, which are fixedly connected to both sides of the pretreatment box 3, and the side blocks 10 are provided with side slide grooves 9 inside, and side sliders 19 are slidably connected in the side slide grooves 9, and the side sliders 19 are fixedly connected to the door panel 5, and a limit assembly 6 is provided on the surface of the side blocks 10;

[0028] When in use, the limit assembly 6 is used to facilitate the limitation of the door panel 5. The door panel 5 is moved up by turning the handle 7, and then the limit assembly 6 is used to limit it to prevent the door panel 5 from loosening. The vertical rod is manually pulled to pull the screening plate 13 out of the feeding chamber 11, so as to facilitate the recovery of the sample remaining on the screening plate 13. After the recovery is completed, the screening plate 13 is installed into the feeding chamber 11, and the movable ball 16 rolls in the corresponding ball movable groove 14 to provide guidance and support. The limit assembly 6 is used to release the limit, and the door panel 5 is moved down, and then the limit assembly 6 is used to limit it to prevent the door panel 5 from loosening. Embodiment 2

[0029] On the basis of the first embodiment, the outer wall of the feed pipe 2 is provided with an external thread 8, the feed pipe 2 is provided with a cover 1, the cover 1 and the feed pipe 2 are screwed, the movable ball 16 and the ball movable groove 14 are adapted, a plurality of screening holes 15 are provided, and the plurality of screening holes 15 are evenly distributed on the surface of the screening plate 13, the feeding chamber 11 and the gas chromatography-mass spectrometer body 4 are communicated, two pull rods 17 are provided, and the two pull rods 17 are symmetrically distributed about the center line of the screening plate 13, and the surface of the pull rod 17 is provided with an anti-slip pattern 18;

[0030] When in use, the material can be fed through the feed tube 2, and the sample falls into the feeding chamber 11 through the screening hole 15, and finally falls into the gas chromatography-mass spectrometer body 4. The cover 1 is connected to the feed tube 2 by screwing, which is easy to operate. The surface of the pull rod 17 is provided with anti-slip texture 18, which can increase friction, improve stability when pulling the pull rod 17, and avoid slipping. Embodiment 3

[0031] On the basis of the second embodiment, the limit assembly 6 includes an insertion rod 22, a spring 23, a driving member 24 and a handle 12. A first through hole 21 is opened on the surface of the side block 10. The insertion rod 22 is inserted into the first through hole 21. The end surface of the insertion rod 22 is fixed with a driving member 24. The surface of the insertion rod 22 is sleeved with a spring 23. One end of the spring 23 is fixedly connected to the driving member 24, and the other end of the spring 23 is fixedly connected to the side block 10.

[0032] A handle 12 is fixed on the surface of the driving member 24, a rubber pad 25 is fixed inside the handle 12, and the rubber pad 25 is provided in a plurality of groups, and the plurality of groups of rubber pads 25 are evenly distributed inside the handle 12. The upper and lower ends of the side slider 19 are provided with second through holes 20, and the insertion rod 22 can be inserted into the second through holes 20. A grip 7 is fixed on the upper end of the door panel 5;

[0033] When in use, manually pull the handle 12 to pull the rod 22 out of the first through hole 21 and the second through hole 20 and hold it, then manually pull the grip 7 to move the door panel 5 upward to open the feeding chamber 11, and then release the handle 12. The rod 22 is automatically inserted into the first through hole 21 and the second through hole 20 below the side slider 19 under the rebound action of the spring 23, thereby limiting the door panel 5 and facilitating the recycling operation. After the recycling operation is completed, pull the handle 12 again to pull the rod 22 out of the first through hole 21 and the second through hole 20 to release the limit, and then move the door panel 5 downward, and then use the limit assembly 6 to limit it to prevent the door panel 5 from loosening.

[0034] Working principle: In actual use, the limit assembly 6 is used to facilitate the limitation of the door panel 5. The door panel 5 is moved up by turning the handle 7, and the limit assembly 6 is used to limit the door panel 5 to prevent it from loosening. The vertical rod is manually pulled to pull the screening plate 13 out of the feeding chamber 11, so as to facilitate the recovery of the sample remaining on the screening plate 13. After the recovery is completed, the screening plate 13 is installed into the feeding chamber 11, and the movable ball 16 rolls in the corresponding ball movable groove 14 to provide guidance and support. The limit assembly 6 is used to release the limit, and the door panel 5 is moved down. The limit assembly 6 is used to limit the door panel 5 to prevent it from loosening. This avoids the problem that the existing pretreatment device is often unable to recover the test sample after the solid test is completed, which may affect the subsequent sample test.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel pretreatment device for gas chromatography-mass spectrometry samples, characterized in that: The novel gas chromatography-mass spectrometer sample pretreatment device comprises: a gas chromatography-mass spectrometer body (4), a pretreatment box (3) fixedly connected to the top of the gas chromatography-mass spectrometer body (4), a feed pipe (2) fixedly connected to the top of the pretreatment box (3), a feeding chamber (11) provided inside the pretreatment box (3), ball movable grooves (14) provided on both sides of the feeding chamber (11), a screening plate (13) provided inside the feeding chamber (11), screening holes (15) provided on the surface of the screening plate (13), movable balls (16) provided on both sides of the screening plate (13), and a pull rod (17) fixed to the end surface of the screening plate (13); A side block (10) is fixedly connected to two sides of the pretreatment box (3); a side slide groove (9) is provided inside the side block (10); a side slider (19) is slidably connected inside the side slide groove (9); the side slider (19) is fixedly connected to the door panel (5); and a limit position assembly (6) is provided on the surface of the side block (10).

2. A novel pretreatment device for gas chromatography-mass spectrometry samples according to claim 1, characterized in that: The outer wall of the feed pipe (2) is provided with an external thread (8), a sealing cover (1) is installed on the feed pipe (2), and the sealing cover (1) and the feed pipe (2) are threadedly connected.

3. The novel pretreatment device for gas chromatography-mass spectrometry samples according to claim 1, characterized in that: The movable ball (16) is matched with the movable ball groove (14), a plurality of screening holes (15) are provided, and the plurality of screening holes (15) are evenly distributed on the surface of the screening plate (13), and the feeding chamber (11) is communicated with the gas chromatography-mass spectrometer body (4).

4. The novel pretreatment device for gas chromatography-mass spectrometry samples according to claim 1, characterized in that: Two pull rods (17) are provided, and the two pull rods (17) are symmetrically distributed about the center line of the screening plate (13), and the surface of the pull rods (17) is provided with anti-slip patterns (18).

5. The novel pretreatment device for gas chromatography-mass spectrometry samples according to claim 1, characterized in that: The limit assembly (6) comprises an insertion rod (22), a spring (23), a driving member (24) and a handle (12); a first through hole (21) is provided on the surface of the side block (10); the insertion rod (22) is inserted into the first through hole (21); and the driving member (24) is fixed to the end surface of the insertion rod (22).

6. A novel sample pretreatment device for gas chromatography-mass spectrometry according to claim 5, characterized in that: A spring (23) is sleeved on the surface of the insertion rod (22), one end of the spring (23) is fixedly connected to the driving member (24), and the other end of the spring (23) is fixedly connected to the side block (10). A handle (12) is fixed on the surface of the driving member (24), and a rubber pad (25) is fixed inside the handle (12). The rubber pad (25) is provided in a plurality of groups, and the plurality of groups of rubber pads (25) are evenly distributed inside the handle (12).

7. The novel pretreatment device for gas chromatography-mass spectrometry samples according to claim 1, characterized in that: The upper and lower ends of the side sliding block (19) are both provided with second through holes (20), and the insertion rod (22) can be inserted into the second through hole (20). A handle (7) is fixed to the upper end of the door panel (5).

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