Sample clamping mechanism for gas chromatography mass spectrometer

Abstract

The utility model relates to the technical field of gas chromatography mass spectrometers, and provides a sample clamping mechanism for a gas chromatography mass spectrometer, which comprises a base and a support frame. The clamping structure is arranged, the movable base drives the movable frame to move up and down, then the two-way threaded rod drives the gear to be connected with the rack in the built-in groove in a meshed mode, when the movable base moves upwards, the gear rotates upwards on one side of the rack, the two-way threaded rod rotates forwards, and the gear is driven to move upwards. When a moving seat moves downwards, a gear rotates downwards on one side of a rack, a two-way threaded rod rotates reversely, then the clamping block and the clamping hoop are far away from each other, discharging can be achieved, when the clamping block drives a moving rod to enable a moving plate to be located in a fixing frame, a spring is compressed, and the clamping block and the clamping hoop can clamp a sample bottle. And through the arrangement of the anti-slip strips, the friction force between the anti-slip strips and the sample bottles is increased, and the sample bottles are prevented from falling off in the clamping process.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography-mass spectrometers, in particular to a sample clamping mechanism for gas chromatography-mass spectrometers. Background Art

[0002] Gas Chromatography-Mass Spectrometry (GC-MS) is an analytical technique that combines the advantages of gas chromatography (GC) and mass spectrometry (MS) and is used to separate, identify, and quantify compounds in complex samples. A sample clamping mechanism for gas chromatography-mass spectrometry is a device used to effectively introduce samples into the chromatographic system during GC-MS analysis, achieving efficient, accurate, and repeatable sample injection, which is crucial to ensuring the accuracy and repeatability of gas chromatography-mass spectrometry analysis results.

[0003] The existing sample clamping mechanism for gas chromatography-mass spectrometer is not convenient for quickly loading and unloading sample bottles during use, and the clamping effect is unstable, so that the sample bottles are easy to fall off during the clamping process, which is inconvenient to use. Utility Model Content

[0004] The utility model aims to provide a sample clamping mechanism for a gas chromatograph mass spectrometer, so as to solve the defect that the existing sample clamping mechanism for a gas chromatograph mass spectrometer is inconvenient for loading and unloading.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a sample clamping mechanism for a gas chromatograph mass spectrometer, comprising a base and a support frame;

[0006] The base includes a support frame, a built-in cavity, a rotating disk, a pulley, a lifting structure, a clamping structure, a sample bottle and a sample slot. The support frame is arranged on one side of the top of the base, and the built-in cavity is arranged on one side inside the base.

[0007] A rotating disk is fixed to the bottom end of the support frame, a pulley is provided on the top of the base at the bottom end of the rotating disk, a lifting structure is provided inside the support frame, and a clamping structure is provided on one side of the support frame;

[0008] A sample bottle is arranged inside the clamping structure, and a sample groove is arranged on a side of the top of the base away from the supporting frame.

[0009] Preferably, the lifting structure includes a motor, a rotating shaft, a rotating block, a reciprocating screw, a movable seat and a threaded groove. The motor is fixed inside the built-in cavity, the rotating shaft is fixed to the output end of the motor, a rotating block is provided inside the rotating disk, a reciprocating screw is provided inside the support frame, a movable seat is provided on the outside of the reciprocating screw, and a threaded groove is provided on the outside of the reciprocating screw inside the movable seat.

[0010] Preferably, the top end of the rotating shaft passes through the bottom end of the top support frame of the base and extends to the interior of the support frame and is fixedly connected to the bottom end of the reciprocating screw. The inside of the rotating block is fixedly connected to the outside of the rotating shaft, and the rotating disk is rotatably connected to the base through the rotating block.

[0011] Preferably, the top end of the reciprocating screw is movably connected to the top end inside the support frame, and the movable seat is threadedly connected to the reciprocating screw via a thread groove.

[0012] Preferably, the clamping structure includes a moving frame, a rack, a gear, a built-in groove, a two-way threaded rod, a slider, a fixed frame, a spring, a moving plate, a moving rod, a clamping block, an anti-slip strip and a clamping hoop. The moving frame is fixed on one side of the moving seat, and a rack is fixed on one side of the reciprocating screw inside the support frame. A gear is provided inside the moving seat on one side of the rack, and a built-in groove is provided inside the moving seat outside the rack and the gear. A two-way threaded rod is provided inside the moving frame, and sliders are provided at both ends of the outer side of the two-way threaded rod. The bottom end of the slider is fixed with a fixed frame, and a spring is fixed on the top of the fixed frame, and one end of the spring is fixed to the moving plate, and the moving rod is fixed on the bottom end of the moving plate, and a clamping block is fixed on one end of the moving rod, an anti-slip strip is provided on one side of the clamping block, and a clamping hoop is fixed on one side of the fixed frame.

[0013] Preferably, the rack is meshed with the gear, one end of the bidirectional threaded rod passes through one side of the moving frame and the moving seat, extends to the inside of the built-in groove and is fixedly connected to one end of the gear, and two groups of sliders are provided, and the sliders are symmetrically distributed on the outside of the bidirectional threaded rod inside the moving frame.

[0014] Preferably, the interior of the slider is provided with an internal thread matching the outer side of the bidirectional threaded rod, the bidirectional threaded rod is threadedly connected to the slider, the movable rod and the fixed frame form a telescopic structure through a spring, the anti-slip strip is made of rubber material, and the clamping hoop is provided with four groups, and the clamping hoop is symmetrically distributed on one side of the fixed frame.

[0015] The utility model provides a sample clamping mechanism for a gas chromatograph-mass spectrometer, which has the following advantages:

[0016] By providing a lifting structure, the motor is started to drive the rotating shaft to rotate, the rotating shaft drives the rotating block to rotate, and then the rotating block drives the rotating disk to rotate through the pulley, and then drives the support frame to rotate, so that it is convenient to adjust the angle to clamp the sample bottle for loading and unloading, and the rotation of the rotating shaft drives the reciprocating screw to rotate, so that the movable seat moves horizontally on the outside of the reciprocating screw through the thread groove, so that it is convenient to adjust the height to realize loading and unloading of the sample bottle;

[0017] By providing a clamping structure, the mobile seat drives the mobile frame to move up and down through the mobile seat, thereby making the two-way threaded rod drive the gear to engage with the rack inside the built-in groove, and the mobile seat moves up and down, thereby making the rack drive the gear to rotate, thereby making the two-way threaded rod rotate and drive the two sets of slide blocks to move in opposite directions, thereby making the clamping block clamp the bottom end of the sample bottle, and the clamping hoop clamp the outside of the sample bottle, which is convenient for fast clamping and carrying of the sample bottle, and has a good clamping effect. When the mobile seat moves upward, the gear rotates upward on one side of the rack, making the two-way threaded rod The forward rotation causes the clamping block and the clamping hoop to clamp the sample bottle, thereby realizing loading. When the movable seat moves downward, the gear rotates downward on one side of the rack, causing the bidirectional threaded rod to rotate in the opposite direction, thereby causing the clamping block and the clamping hoop to move away from each other, thereby realizing unloading. When the clamping block unloads the sample bottle, the clamping block drives the moving rod to compress the spring inside the fixed frame, thereby playing a buffering role when unloading the sample bottle. By providing an anti-slip strip, the friction with the sample bottle is increased to prevent the sample bottle from falling off during the clamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0020] Figure 3 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 It is a side cross-sectional structural schematic diagram of the utility model;

[0022] Figure 5 For the utility model Figure 4 Enlarged structural diagram at point B in the middle.

[0023] Explanation of the reference numerals in the figure: 1. base; 101. support frame; 102. built-in cavity; 103. rotating disk; 104. pulley; 105. lifting structure; 1051. motor; 1052. rotating shaft; 1053. rotating block; 1054. reciprocating screw; 1055. moving seat; 1056. threaded groove; 106. clamping structure; 1061. moving frame; 1062. rack; 1063. gear; 1064. built-in groove; 1065. bidirectional threaded rod; 1066. slider; 1067. fixed frame; 1068. spring; 1069. moving plate; 10610. moving rod; 10611. clamping block; 10612. anti-slip strip; 10613. clamping hoop; 107. sample bottle; 108. sample tank. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The utility model provides a sample clamping mechanism for a gas chromatograph-mass spectrometer, comprising a base 1 and a support frame 101 .

[0026] Reference Figure 1 、 Figure 2 and Figure 4 As shown, the base 1 includes a support frame 101, a built-in cavity 102, a rotating disk 103, a pulley 104, a lifting structure 105, a clamping structure 106, a sample bottle 107 and a sample slot 108. The support frame 101 is arranged on one side of the top of the base 1, and the built-in cavity 102 is provided on one side of the interior of the base 1. The bottom end of the support frame 101 is fixed with a rotating disk 103, and the top end of the base 1 at the bottom end of the rotating disk 103 is provided with a pulley 104. The interior of the support frame 101 is provided with a lifting structure 105, and the lifting structure 105 includes a motor 1051, a rotating shaft 1052, a rotating block 1053, a reciprocating screw 1054, a movable seat 1055 and a threaded groove 1056. The motor 1051 is fixed inside the built-in cavity 102, and the output end of the motor 1051 is fixed with a rotating shaft 1052. A rotating block 1053 is provided inside the rotating disk 103, a reciprocating screw 1054 is provided inside the support frame 101, a moving seat 1055 is provided on the outside of the reciprocating screw 1054, and a threaded groove 1056 is provided on the outside of the reciprocating screw 1054 inside the moving seat 1055. The top of the rotating shaft 1052 passes through the bottom end of the support frame 101 at the top of the base 1 and extends to the interior of the support frame 101 and is fixedly connected to the bottom end of the reciprocating screw 1054. The interior of the rotating block 1053 is fixedly connected to the outside of the rotating shaft 1052. The rotating disk 103 is rotatably connected to the base 1 through the rotating block 1053, the top of the reciprocating screw 1054 is movably connected to the top inside the support frame 101, and the moving seat 1055 is threadedly connected to the reciprocating screw 1054 through the threaded groove 1056.

[0027] By starting the motor 1051, the rotating shaft 1052 is driven to rotate, and the rotating shaft 1052 drives the rotating block 1053 to rotate, and the rotating block 1053 drives the rotating disk 103 to rotate through the pulley 104, and then drives the support frame 101 to rotate, so as to facilitate the adjustment of the angle to clamp the sample bottle 107 for loading and unloading. The rotation of the rotating shaft 1052 drives the reciprocating screw 1054 to rotate, and then the movable seat 1055 moves horizontally on the outside of the reciprocating screw 1054 through the threaded groove 1056, so as to facilitate the height adjustment to realize the loading and unloading of the sample bottle 107.

[0028] Reference Figure 2-Figure 5 As shown, a clamping structure 106 is provided on one side of the support frame 101, and the clamping structure 106 includes a moving frame 1061, a rack 1062, a gear 1063, a built-in groove 1064, a bidirectional threaded rod 1065, a slider 1066, a fixed frame 1067, a spring 1068, a moving plate 1069, a moving rod 10610, a clamping block 10611, an anti-slip strip 10612 and a clamping hoop 10613. The moving frame 1061 is fixed to one side of the moving seat 1055, and a rack 1062 is fixed to one side of the reciprocating screw 1054 inside the support frame 101. A gear 1063 is provided inside the movable seat 1055 on one side of 1062. A built-in groove 1064 is provided inside the movable seat 1055 outside the rack 1062 and the gear 1063. A bidirectional threaded rod 1065 is provided inside the movable frame 1061. Sliders 1066 are provided at both ends of the outer side of the bidirectional threaded rod 1065. A fixed frame 1067 is fixed to the bottom end of the slide 1066. A spring 1068 is fixed to the top end of the fixed frame 1067. A movable plate 1069 is fixed to one end of the spring 1068. The bottom end of the movable plate 1069 is fixed to the movable rod 1061. 0, a clamping block 10611 is fixed to one end of the moving rod 10610, an anti-slip strip 10612 is provided on one side of the clamping block 10611, a clamping hoop 10613 is fixed to one side of the fixed frame 1067, the rack 1062 is meshed with the gear 1063, one end of the bidirectional threaded rod 1065 passes through the moving frame 1061 and one side of the moving seat 1055 and extends to the inside of the built-in groove 1064 and is fixedly connected to one end of the gear 1063, and two groups of sliders 1066 are provided, and the sliders 1066 are opposite to each other on the outside of the bidirectional threaded rod 1065 inside the moving frame 1061. The slider 1066 is provided with an internal thread that matches the outer side of the bidirectional threaded rod 1065. The bidirectional threaded rod 1065 is threadedly connected to the slider 1066. The moving rod 10610 and the fixed frame 1067 form a telescopic structure through the spring 1068. The anti-slip strip 10612 is made of rubber material. There are four groups of clamping hoops 10613, and the clamping hoops 10613 are symmetrically distributed on one side of the fixed frame 1067. A sample bottle 107 is provided inside the clamping structure 106, and a sample slot 108 is provided on the side of the top of the base 1 away from the support frame 101.

[0029] The movable frame 1061 is driven up and down by the movable seat 1055, so that the two-way threaded rod 1065 drives the gear 1063 to mesh with the rack 1062 inside the built-in groove 1064, and the movable seat 1055 moves up and down, so that the rack 1062 drives the gear 1063 to rotate, so that the two-way threaded rod 1065 rotates and drives the two sets of sliders 1066 to move in the opposite direction, so that the clamping block 10611 clamps the bottom end of the sample bottle 107, and the clamping hoop 10613 clamps the outside of the sample bottle 107, which is convenient for fast clamping and carrying of the sample bottle 107, and the clamping effect is good. When the movable seat 1055 moves upward, the gear 1063 rotates upward on one side of the rack 1062, so that the two-way threaded rod 1065 rotates forward, so that The clamping block 10611 and the clamping hoop 10613 clamp the sample bottle 107 to achieve loading. When the movable seat 1055 moves downward, the gear 1063 rotates downward on one side of the rack 1062, causing the bidirectional threaded rod 1065 to rotate in the opposite direction, thereby causing the clamping block 10611 and the clamping hoop 10613 to move away from each other, thereby achieving unloading. When the clamping block 10611 unloads the sample bottle 107, the clamping block 10611 drives the moving rod 10610 to compress the moving plate 1069 inside the fixed frame 1067 so that the spring 1068 is compressed, thereby playing a buffering role when unloading the sample bottle 107. By providing the anti-slip strip 10612, the friction with the sample bottle 107 is increased to prevent the sample bottle 107 from falling off during the clamping process.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sample clamping mechanism for a gas chromatograph mass spectrometer, comprising a base (1) and a support frame (101); Its characteristics are: The base (1) comprises a support frame (101), a built-in cavity (102), a rotating disk (103), a pulley (104), a lifting structure (105), a clamping structure (106), a sample bottle (107) and a sample tank (108); the support frame (101) is arranged on one side of the top of the base (1); and the built-in cavity (102) is arranged on one side inside the base (1); A rotating disk (103) is fixed to the bottom end of the support frame (101), a pulley (104) is provided at the top end of the base (1) at the bottom end of the rotating disk (103), a lifting structure (105) is provided inside the support frame (101), and a clamping structure (106) is provided on one side of the support frame (101); A sample bottle (107) is provided inside the clamping structure (106), and a sample groove (108) is provided on a side of the top of the base (1) away from the support frame (101).

2. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 1, characterized in that: The lifting structure (105) comprises a motor (1051), a rotating shaft (1052), a rotating block (1053), a reciprocating screw (1054), a moving seat (1055) and a threaded groove (1056); the motor (1051) is fixed inside the built-in cavity (102); the rotating shaft (1052) is fixed to the output end of the motor (1051); the rotating block (1053) is arranged inside the rotating disk (103); the reciprocating screw (1054) is arranged inside the support frame (101); the moving seat (1055) is arranged outside the reciprocating screw (1054); and the threaded groove (1056) is arranged outside the reciprocating screw (1054) inside the moving seat (1055).

3. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 2, characterized in that: The top end of the rotating shaft (1052) passes through the bottom end of the top support frame (101) of the base (1), extends to the interior of the support frame (101), and is fixedly connected to the bottom end of the reciprocating screw (1054). The interior of the rotating block (1053) is fixedly connected to the outside of the rotating shaft (1052). The rotating disk (103) is rotatably connected to the base (1) via the rotating block (1053).

4. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 2, characterized in that: The top end of the reciprocating screw (1054) is movably connected to the top end inside the support frame (101), and the movable seat (1055) is threadedly connected to the reciprocating screw (1054) via a thread groove (1056).

5. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 1, characterized in that: The clamping structure (106) comprises a moving frame (1061), a rack (1062), a gear (1063), a built-in groove (1064), a bidirectional threaded rod (1065), a slider (1066), a fixed frame (1067), a spring (1068), a moving plate (1069), a moving rod (10610), a clamping block (10611), an anti-slip strip (10612) and a clamping hoop (10613), wherein the moving frame (1061) is fixed to one side of the moving seat (1055), a rack (1062) is fixed to one side of the reciprocating screw (1054) inside the support frame (101), a gear (1063) is provided inside the moving seat (1055) on one side of the rack (1062), and the rack (1062) and the gear (1063) are arranged on the outside of the moving seat (1055). 055) is provided with a built-in groove (1064), a bidirectional threaded rod (1065) is provided inside the movable frame (1061), sliders (1066) are provided at both ends of the outer side of the bidirectional threaded rod (1065), a fixed frame (1067) is fixed at the bottom end of the slider (1066), a spring (1068) is fixed at the top end of the fixed frame (1067), a movable plate (1069) is fixed at one end of the spring (1068), a movable rod (10610) is fixed at the bottom end of the movable plate (1069), a clamping block (10611) is fixed at one end of the movable rod (10610), an anti-slip strip (10612) is provided on one side of the clamping block (10611), and a clamping hoop (10613) is fixed on one side of the fixed frame (1067).

6. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 5, characterized in that: The rack (1062) is meshedly connected with the gear (1063), one end of the bidirectional threaded rod (1065) passes through the movable frame (1061) and one side of the movable seat (1055), extends to the interior of the built-in groove (1064), and is fixedly connected to one end of the gear (1063), and two groups of sliders (1066) are provided. The sliders (1066) are symmetrically distributed on the outside of the bidirectional threaded rod (1065) inside the movable frame (1061).

7. The sample clamping mechanism for a gas chromatograph-mass spectrometer according to claim 5, characterized in that: The interior of the slider (1066) is provided with an internal thread that matches the outer side of the bidirectional threaded rod (1065). The bidirectional threaded rod (1065) is threadedly connected to the slider (1066). The movable rod (10610) and the fixed frame (1067) form a telescopic structure via a spring (1068). The anti-slip strip (10612) is made of rubber. Four groups of clamping hoops (10613) are provided, and the clamping hoops (10613) are symmetrically distributed on one side of the fixed frame (1067).

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