Automatic sampling mechanism of liquid chromatograph-mass spectrometer for food detection

Abstract

The utility model discloses an automatic sample introduction mechanism of a liquid chromatograph-mass spectrometer for food detection, and particularly relates to the technical field of liquid chromatograph-mass spectrometers, the automatic sample introduction mechanism comprises a detector body, a detection groove is formed in the surface of the detector body, a push-and-pull assembly is installed in the detection groove of the detector body, and the push-and-pull assembly is arranged in the detection groove of the detector body. A storage assembly is installed at the transmission end of the push-pull assembly. The push-pull assembly comprises a back plate, and the surface of the back plate is fixedly connected with an electric push rod. The device has the beneficial effects that a sample is placed in the storage groove of the detection table, the electric push rod is started through external control equipment, and the transmission end of the electric push rod pulls the cover plate and the detection table, so that the detection table is driven to stably enter the inner side position of the detection groove of the detector body, the feeding process is stable, and the use effect is good; in the process that the electric push rod pulls the cover plate, the polish rod on the inner side of the cover plate slides relative to the guide base of the guide frame, and the good auxiliary guide effect is achieved.

Description

Technical Field

[0001] The utility model relates to an automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food detection, in particular to an automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food detection, belonging to the technical field of liquid chromatography-mass spectrometers. Background Art

[0002] Liquid chromatography-mass spectrometry, abbreviated as LC-MS, is an instrument that combines liquid chromatography with mass spectrometry. It combines the liquid chromatography's ability to effectively separate thermally unstable and high-boiling point compounds with the mass spectrometer's strong component identification capabilities. It is an effective means of separating and analyzing complex organic mixtures.

[0003] After searching, the existing patent number CN216051568U is an automatic sampling mechanism of a liquid chromatography-mass spectrometry instrument for food testing, including an outer shell and a base, a control panel and a cover plate groove are provided on one side of the outer shell, a coupling instrument body is provided in the cover plate groove, a detection groove is provided on one side of the coupling instrument body, a movable frame is provided in the detection groove, a plurality of equidistantly arranged storage grooves are provided on the movable frame, a storage plate is passed through the storage groove, guide blocks are provided on both sides of the storage plate, the guide blocks are movably matched with the slide grooves provided on the side walls of the storage groove, and a plurality of sample grooves for placing sample bottles are provided on the upper end of the storage plate; the samples are stored by means of guide rail movement, and at the same time, the storage plate adopts a separate sliding design, which can take out all the samples and also take and place a single group of samples separately, so that the staff can detect and replace the sample bottles conveniently and practically.

[0004] For commonly used liquid chromatography-mass spectrometry, when conducting food testing, food samples are placed on the testing table, and then the testing table needs to be manually pushed and pulled for sample injection. The rate of the pushing and pulling process cannot be effectively controlled, affecting the smoothness of sample delivery. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an automatic sample injection mechanism for a liquid chromatography-mass spectrometry instrument for food detection.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An automatic sampling mechanism of a liquid chromatography-mass spectrometer for food detection is designed, comprising a detector body, a detection slot is provided on the surface of the detector body, a push-pull component is installed inside the detection slot of the detector body, and a storage component is installed at the transmission end of the push-pull component;

[0008] The push-pull assembly includes a back plate, a surface of the back plate is fixedly connected to an electric push rod, a transmission output end of the electric push rod is transmission-connected to a cover plate, a carrier is installed at the inner side of the cover plate, a support seat is symmetrically installed on the upper surface of the carrier, and a positioning column is vertically installed on the upper surface of the support seat;

[0009] The storage component includes a detection table, a storage groove is opened in the middle position of the surface of the detection table, and positioning holes are symmetrically opened on the surface of the detection table. The sample is placed inside the storage groove of the detection table, and the electric push rod is started by an external control device. The transmission end of the electric push rod pulls the cover plate and the detection table, thereby driving the detection table to smoothly enter the inner side of the detection groove of the detector body, and the feeding process is smooth and the use effect is good. In the process of the electric push rod pulling the cover plate, the light rod on the inner side of the cover plate slides relative to the guide seat of the guide frame, which has a good auxiliary guiding effect.

[0010] Preferably, the back plate is attached to the closed end of the detection slot of the detector body, and the back plate and the detector body are fixedly connected.

[0011] Preferably, the cover plate is plugged into and corresponds to the opening position of the detection slot of the detector body, and a sealing member is bonded to the inner surface of the cover plate.

[0012] Preferably, a guide frame is fixedly connected to the surface of the back plate, a guide seat is fixedly connected to the end surface of the guide frame, a polished rod is slidably inserted inside the guide seat, and the free end of the polished rod is fixedly connected to the cover plate.

[0013] Preferably, the positioning holes on the surface of the detection platform are plug-in-corresponding to the positioning columns on the upper surface of the support seat, and a rubber pad is bonded to the upper surface of the support seat.

[0014] Preferably, both ends of the testing platform are fixedly connected with handles, and the surfaces of the handles are provided with anti-slip patterns.

[0015] The utility model provides an automatic sample injection mechanism for a liquid chromatography-mass spectrometer for food testing, which has the following beneficial effects:

[0016] 1. The utility model places the sample inside the storage slot of the test table, starts the electric push rod through the external control device, and the transmission end of the electric push rod pulls the cover plate and the test table, thereby driving the test table to smoothly enter the inner position of the test slot of the detector body. The feeding process is smooth and the use effect is good. In the process of the electric push rod pulling the cover plate, the light rod on the inner side of the cover plate slides relative to the guide seat of the guide frame, which has a good auxiliary guiding effect.

[0017] 2. The surface of the testing table of the utility model is symmetrically provided with positioning holes, and the positioning holes on the surface of the testing table are plugged into and correspond to the positioning columns on the upper surface of the support seat, so that the testing table can be disassembled relative to the carrier and cleaned, which is cleaner and more hygienic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the connection structure of the cover plate and the back plate of the automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing proposed by the utility model;

[0020] Figure 3 This is a structural schematic diagram of the cover plate and back plate of the automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing proposed by the utility model from another perspective;

[0021] Figure 4 The utility model provides a schematic diagram of the automatic sample introduction mechanism stage structure of a liquid chromatography-mass spectrometer for food testing.

[0022] In the figure: 1. detector body; 2. storage slot; 3. positioning hole; 4. detection table; 5. handle; 6. cover plate; 7. carrier; 8. support seat; 9. rubber pad; 10. positioning column; 11. back plate; 12. electric push rod; 13. guide frame; 14. guide seat; 15. light rod. DETAILED DESCRIPTION

[0023] Reference Figure 1-4 , an automatic sampling mechanism of a liquid chromatography-mass spectrometer for food detection, comprising a detector body 1, a detection slot is provided on the surface of the detector body 1, a push-pull component is installed inside the detection slot of the detector body 1, and a storage component is installed at the transmission end of the push-pull component;

[0024] The push-pull assembly includes a back plate 11, a surface of the back plate 11 is fixedly connected with an electric push rod 12, a transmission output end of the electric push rod 12 is transmission-connected with a cover plate 6, a carrier 7 is installed at the inner side of the cover plate 6, a support seat 8 is symmetrically installed on the upper surface of the carrier 7, and a positioning column 10 is vertically installed on the upper surface of the support seat 8;

[0025] The storage component comprises a detection platform 4 , a storage groove 2 is provided in the middle of the surface of the detection platform 4 , and positioning holes 3 are symmetrically provided on the surface of the detection platform 4 .

[0026] The back plate 11 is fitted on the closed end of the detection slot of the detector body 1, the back plate 11 and the detector body 1 are fixedly connected, the cover plate 6 is plugged into and corresponds to the opening position of the detection slot of the detector body 1, a seal is bonded to the inner surface of the cover plate 6, a guide frame 13 is fixedly connected to the surface of the back plate 11, a guide seat 14 is fixedly connected to the end face of the guide frame 13, a light rod 15 is slidably plugged into the inside of the guide seat 14, and the free end of the light rod 15 is fixedly connected to the cover plate 6.

[0027] It should be noted that when performing the sample injection process, the sample is first placed inside the storage slot 2 of the detection table 4, and the electric push rod 12 is started through an external control device. The transmission end of the electric push rod 12 pulls the cover plate 6 and the detection table 4, thereby driving the detection table 4 to smoothly enter the inner position of the detection slot of the detector body 1. The feeding process is smooth and the use effect is good. In the process of the electric push rod 12 pulling the cover plate 6, the light rod 15 on the inner side of the cover plate 6 slides relative to the guide seat 14 of the guide frame 13, which has a good auxiliary guiding effect.

[0028] Reference Figure 1 and Figure 4 As shown, the positioning holes 3 on the surface of the testing platform 4 are plugged into and correspond to the positioning columns 10 on the upper surface of the support seat 8, a rubber pad 9 is bonded to the upper surface of the support seat 8, and handles 5 are fixedly connected to both ends of the testing platform 4, and the surface of the handles 5 is provided with anti-slip grooves.

[0029] It should be noted that the surface of the testing table 4 is symmetrically provided with positioning holes 3, and the positioning holes 3 on the surface of the testing table 4 are plugged into and correspond to the positioning columns 10 on the upper surface of the support seat 8, which makes it convenient to disassemble the testing table 4 relative to the carrier 7 and clean the testing table 4, making it cleaner and more hygienic.

[0030] Working principle: When in use, when performing sample injection processing, first place the sample inside the storage slot 2 of the detection table 4, start the electric push rod 12 through the external control device, and the transmission end of the electric push rod 12 pulls the cover plate 6 and the detection table 4, thereby driving the detection table 4 to smoothly enter the inner position of the detection slot of the detector body 1, and the feeding process is smooth and the use effect is good; in the process of the electric push rod 12 pulling the cover plate 6, the light rod 15 on the inner side of the cover plate 6 slides relative to the guide seat 14 of the guide frame 13, which has a good auxiliary guiding effect; the surface of the detection table 4 is symmetrically provided with positioning holes 3, and the positioning holes 3 on the surface of the detection table 4 are plugged into and correspond to the positioning columns 10 on the upper surface of the support seat 8, which is convenient for disassembling the detection table 4 relative to the carrier 7 and cleaning the detection table 4, which is cleaner and more hygienic.

Claims

1. An automatic sampling mechanism for a liquid chromatography-mass spectrometry instrument for food testing, comprising a detector body (1), characterized in that: A detection groove is provided on the surface of the detector body (1), a push-pull component is installed inside the detection groove of the detector body (1), and a storage component is installed at the transmission end of the push-pull component; The push-pull assembly comprises a back plate (11), the surface of the back plate (11) is fixedly connected to an electric push rod (12), the transmission output end of the electric push rod (12) is transmission-connected to a cover plate (6), a carrier (7) is installed at the inner side of the cover plate (6), a support seat (8) is symmetrically installed on the upper surface of the carrier (7), and a positioning column (10) is vertically installed on the upper surface of the support seat (8); The storage component comprises a detection platform (4), a storage groove (2) is provided in the middle of the surface of the detection platform (4), and positioning holes (3) are symmetrically provided on the surface of the detection platform (4).

2. The automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing according to claim 1, characterized in that: The back plate (11) is fitted on the closed end of the detection slot of the detector body (1), and the back plate (11) and the detector body (1) are fixedly connected.

3. The automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing according to claim 1, characterized in that: The cover plate (6) is plugged into and corresponds to the opening position of the detection slot of the detector body (1), and a sealing member is bonded to the inner surface of the cover plate (6).

4. The automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing according to claim 1, characterized in that: A guide frame (13) is fixedly connected to the surface of the back plate (11); a guide seat (14) is fixedly connected to the end surface of the guide frame (13); a light rod (15) is slidably inserted inside the guide seat (14); and a free end of the light rod (15) is fixedly connected to the cover plate (6).

5. The automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing according to claim 1, characterized in that: The positioning holes (3) on the surface of the detection platform (4) are plugged into and correspond to the positioning columns (10) on the upper surface of the support seat (8), and a rubber pad (9) is bonded to the upper surface of the support seat (8).

6. The automatic sample injection mechanism of a liquid chromatography-mass spectrometer for food testing according to claim 1, characterized in that: Both ends of the detection platform (4) are fixedly connected with handles (5), and the surface of the handles (5) is provided with anti-slip patterns.

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