Multi-air-bag automatic sample injection system with automatic dilution function

Abstract

The utility model provides a multipath air bag automatic sample introduction system with an automatic dilution function, which comprises a sample introduction device body, 36 air bag interfaces are arranged on one side surface of the sample introduction device body, six output interfaces are arranged on the back of the sample introduction device body, and the air bag interfaces are communicated with the output interfaces. A gas bag sample gas mass flow meter and a diluent gas mass flow meter are arranged in the sample injector body. The thirty-six gas bag connectors are arranged on the sample injector body, one gas bag connector can be optionally selected to be output to a subsequent gas chromatograph or other instruments for analysis, meanwhile, gas bag sample gas can be diluted before being output to the gas chromatograph through the arrangement of the gas bag sample gas mass flow meter and the diluent gas mass flow meter, and the gas bag sample gas can be conveniently and rapidly output to the gas chromatograph. And the gas bag sample gas mass flow meter and the diluent gas mass flow meter can respectively control the flow of the gas bag sample gas and the diluent gas, so that the function of accurately diluting the gas bag sample gas is achieved, and errors are prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic sample injector technology field, concretely is a kind of automatic dilution function's multichannel gas bag automatic sample injector system. BACKGROUND

[0002] In chromatographic experimental analysis, the device that can quantitatively send sample into chromatographic column is called sample injector.Sample injector is divided into manual sample injector and automatic sample injector two, and automatic sample injector is a kind of intelligent, automatic sample instrument, just need to set sample injection parameter, put into sample to be detected, can complete automatic sample injection process;

[0003] Current gas bag automatic sample injector has the following problems:

[0004] 1, some gas bag automatic sample injector in prior art is mostly through needle cylinder to dilute sample, and this dilution method is not accurate enough, not only can produce larger error, and also waste a large amount of manual cost;

[0005] 2, some gas bag automatic sample injector in prior art is installed to the back plate on the body by screw, and this method needs to be loaded and unloaded in order to screw when maintaining or overhauling the body, operation process is extremely inconvenient, reduces the overhauling and maintenance efficiency of gas bag automatic sample injector. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a kind of automatic dilution function's multichannel gas bag automatic sample injector to solve the problems raised in the above background.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of automatic dilution function's multichannel gas bag automatic sample injector, including sample injector body, one side of the sample injector body is provided with thirty-six gas bag interfaces, the back of the sample injector body is provided with six output interfaces, the inside of the sample injector body is provided with gas bag sample gas mass flow meter and dilution gas mass flow meter, the gas bag interface is connected with output interface by gas bag sample gas mass flow meter, and the dilution gas mass flow meter is connected between gas bag sample gas mass flow meter and output interface by tee pipe.

[0009] Preferably, another side of the sample injector body is provided with back plate, the bottom of the back plate is hinged to the surface of sample injector body by hinge, and connection structure is arranged between the top of the back plate and the sample injector body.

[0010] Preferably, the connection structure includes a first magnet, a second magnet, and a protective shell. The protective shell is fixedly installed on the surface of the back plate, the first magnet is fixedly installed on the surface of the injector body, and the second magnet is fixedly installed inside the protective shell. The first magnet and the second magnet have opposite polarities and attract each other.

[0011] Preferably, a separation structure is provided between the first magnet and the second magnet. The separation structure includes a cavity, a guide rod, and a push plate. The push plate is horizontally slidably connected to the surface of the protective shell through an elastic structure. The guide rod is fixedly connected to the surface of the push plate. The cavities are respectively provided on the surfaces of the first magnet and the second magnet, and a conical channel is formed between the two cavities. One end of the guide rod is slidably connected to the conical channel.

[0012] Preferably, the elastic structure includes a drive rod, a spring, a limiting plate, and a receiving cavity. One end of the drive rod is fixedly connected to the surface of the push plate. The receiving cavity is disposed inside the protective shell. The limiting plate is concentrically fixedly connected to the other end of the drive rod. The drive rod is slidably connected to the inside of the protective shell. The limiting plate is slidably connected to the inside of the receiving cavity. The spring is fixedly connected between the receiving cavity and the limiting plate. The diameter of the limiting plate is larger than the diameter of the drive rod.

[0013] Preferably, a synchronous drive structure is provided between the two push plates and the protective shell. The synchronous drive structure includes a gear, a rotating shaft, a rack, and a knob. The knob is concentrically fixed to one end of the rotating shaft, and the other end of the rotating shaft is rotatably connected to the surface of the protective shell. The gear is keyed to the surface of the rotating shaft. The two racks are respectively fixedly connected to the surface of the push plates. Both racks mesh with the gear, and the two racks are symmetrical about the center of the rotating shaft.

[0014] Preferably, a T-shaped track is fixedly installed on the surface of the protective shell, and a T-shaped groove matching the T-shaped track is provided on the surface of the rack, and the rack is slidably connected to the surface of the T-shaped track through the T-shaped groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model has thirty-six gas bag interfaces on the injector body, which can be selected to output to the subsequent gas chromatograph or other instruments for analysis. At the same time, by setting the gas bag sample gas mass flow meter and the dilution gas mass flow meter, the gas bag sample gas can be diluted before being output to the gas chromatograph. Furthermore, the gas bag sample gas mass flow meter and the dilution gas mass flow meter can control the flow rate of the gas bag sample gas and the dilution gas respectively, so as to achieve the function of accurately diluting the gas bag sample gas and thus preventing errors.

[0017] 2. This utility model uses a hinge to connect the back plate and the injector body, allowing the back plate to be separated from the injector body by flipping. The back plate and the injector body are connected by a connecting structure. The back plate can be flipped by turning a knob. This is not only simple to operate, but also eliminates the need for additional bolts in the back plate installation and removal process, as well as the use of additional tools, which greatly reduces the efficiency of inspection and maintenance of the injector body. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the sampler body of this utility model;

[0019] Figure 2 This is a side view of the sampler body of this utility model.

[0020] Figure 3 This is a schematic diagram of the main structure of the connection structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the main structure of the synchronous drive structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the first magnet and the second magnet of this utility model.

[0023] In the diagram: 1. Injector body; 2. Gas bag interface; 3. Output interface; 4. Gas bag sample gas mass flow meter; 5. Dilution gas mass flow meter; 6. Back plate; 7. Hinge; 8. First magnet; 9. Second magnet; 10. Protective shell; 11. Cavity; 12. Guide rod; 13. Push plate; 14. Drive rod; 15. Spring; 16. Limiting plate; 17. Receiving cavity; 18. Gear; 19. Rotating shaft; 20. Rack; 21. Knob; 22. T-shaped track; 23. T-shaped groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1-5This utility model provides a multi-channel gas bag automatic sampling system with automatic dilution function, including a sampler body 1. Thirty-six gas bag interfaces 2 are provided on one side of the sampler body 1, and six output interfaces 3 are provided on the back of the sampler body 1. A gas bag sample gas mass flow meter 4 and a dilution gas mass flow meter 5 are provided inside the sampler body 1. The gas bag interfaces 2 are connected to the output interfaces 3 through the gas bag sample gas mass flow meter 4, and the dilution gas mass flow meter 5 is connected between the gas bag sample gas mass flow meter 4 and the output interfaces 3 through a three-way pipe.

[0026] Please see Figure 1 and 2 The thirty-six gas bag interfaces 2 can be selected to output one of the channels to the subsequent gas chromatograph or other instruments for analysis. At the same time, through the settings of the gas bag sample gas mass flow meter 4 and the dilution gas mass flow meter 5, the gas bag sample gas can be diluted before being output to the gas chromatograph. Furthermore, the gas bag sample gas mass flow meter 4 and the dilution gas mass flow meter 5 can control the flow rate of the gas bag sample gas and the dilution gas respectively, so as to achieve the function of accurately diluting the gas bag sample gas and thus prevent errors.

[0027] A back plate 6 is provided on another side of the injector body 1. The bottom of the back plate 6 is hinged to the surface of the injector body 1 via a hinge 7. A connection structure is provided between the top of the back plate 6 and the injector body 1.

[0028] Please see Figure 2 In this embodiment, the back plate 6 is connected to the injector body 1 from the top and bottom respectively. The top of the back plate 6 is set as a connecting structure for easy disassembly. The bottom of the back plate 6 is connected to the injector body 1 through a hinge 7. This allows the back plate 6 to be flipped on the surface of the injector body 1. The back plate 6 will not separate from the injector body 1 after it is opened, thus preventing the back plate 6 from being lost. Moreover, there are no independent small parts such as screws between the back plate 6 and the injector body 1, which can prevent these small parts from being lost.

[0029] The connection structure includes a first magnet 8, a second magnet 9, and a protective shell 10. The protective shell 10 is fixedly installed on the surface of the back plate 6. The first magnet 8 is fixedly installed on the surface of the injector body 1. The second magnet 9 is fixedly installed inside the protective shell 10. The first magnet 8 and the second magnet 9 have opposite polarities and attract each other. A separation structure is provided between the first magnet 8 and the second magnet 9. The separation structure includes a cavity 11, a guide rod 12, and a push plate 13. The push plate 13 is horizontally slidably connected to the surface of the protective shell 10 through an elastic structure. The guide rod 12 is fixedly connected to the surface of the push plate 13. The cavities 11 are respectively provided on the surfaces of the first magnet 8 and the second magnet 9, forming a conical channel between the two cavities 11. One end of the guide rod 12 is slidably connected inside the conical channel.

[0030] Please see Figure 5 The protective shell 10 is fixed to the surface of the sample injector body 1 by the mutual attraction between the first magnet 8 and the second magnet 9. When it is necessary to open the back plate 6, the guide rod 12 is driven horizontally into the conical channel by the push plate 13. Since the conical channel is conical in shape and the inner diameter gradually shortens along the center line of the cone, as the guide rod 12 moves, the guide rod 12 will gradually push the first magnet 8 and the second magnet 9 apart between the two cavities 11 so that the first magnet 8 and the second magnet 9 can be separated from each other so that the back plate 6 can be opened.

[0031] The elastic structure includes a drive rod 14, a spring 15, a limiting plate 16, and a receiving cavity 17. One end of the drive rod 14 is fixedly connected to the surface of the push plate 13. The receiving cavity 17 is disposed inside the protective shell 10. The limiting plate 16 is concentrically fixedly connected to the other end of the drive rod 14. The drive rod 14 is slidably connected to the inside of the protective shell 10. The limiting plate 16 is slidably connected to the inside of the receiving cavity 17. The spring 15 is fixedly connected between the receiving cavity 17 and the limiting plate 16. The diameter of the limiting plate 16 is larger than the diameter of the drive rod 14.

[0032] Please see Figure 5 As the push plate 13 drives the guide rod 12 to push open the first magnet 8 and the second magnet 9, it gradually approaches the protective shell 10. Therefore, the push plate 13 will drive the limiting plate 16 through the drive rod 14 to gradually compress the spring 15 inside the receiving cavity 17, so that the spring 15 continuously stores energy. After the push plate 13 is released, it can drive the drive rod 14 to reset under the action of the spring 15, and then drive the guide rod 12 to reset through the push plate 13, so as to facilitate the re-adsorption between the first magnet 8 and the second magnet 9.

[0033] It should be noted that the first magnet 8 and the second magnet 9 do not need to be too large in size, so as to prevent the magnetic field from interfering with the operation of the sample injector body 1 or other equipment.

[0034] A synchronous drive structure is provided between the two push plates 13 and the protective shell 10. The synchronous drive structure includes a gear 18, a rotating shaft 19, a rack 20 and a knob 21. The knob 21 is concentrically fixed to one end of the rotating shaft 19, and the other end of the rotating shaft 19 is rotatably connected to the surface of the protective shell 10. The gear 18 is keyed to the surface of the rotating shaft 19. The two racks 20 are respectively fixedly connected to the surface of the push plates 13. Both racks 20 mesh with the gear 18, and the two racks 20 are symmetrical about the center of the rotating shaft 19.

[0035] Please see Figure 3 , 45. Through the setting of the synchronous drive mechanism, the two push plates 13 can be driven to move simultaneously, so that the two guide rods 12 can push the first magnet 8 and the second magnet 9 open from two directions. When the knob 21 is turned, the rotating shaft 19 can be driven to rotate. When the rotating shaft 19 rotates, it can drive the gear 18 to rotate synchronously. At this time, the gear 18 can simultaneously drive the two racks 20 to move linearly on the surface of the protective shell 10, so that the racks 20 can drive the push plate 13 to gradually approach the protective shell 10, thereby realizing the drive of the guide rod 12.

[0036] A T-shaped track 22 is fixedly installed on the surface of the protective shell 10, and a T-shaped groove 23 matching the T-shaped track 22 is provided on the surface of the rack 20. The rack 20 is slidably connected to the surface of the T-shaped track 22 through the T-shaped groove 23.

[0037] Please see Figure 3 , 4 5. The rack 20 can slide on the T-shaped track 22 on the surface of the protective shell 10 through the T-shaped slide groove 23. The cooperation between the T-shaped track 22 and the T-shaped slide groove 23 can guide the movement of the rack 20 to prevent the rack 20 from deviating during movement, thereby ensuring the precise meshing between the rack 20 and the gear 18.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-channel gas bag automatic sample injection system with automatic dilution function, comprising an injector body (1), characterized in that: Thirty-six gas bag ports (2) are provided on one side of the injector body (1), and six output ports (3) are provided on the back of the injector body (1). A gas bag sample gas mass flow meter (4) and a dilution gas mass flow meter (5) are provided inside the injector body (1). The gas bag ports (2) are connected to the output ports (3) through the gas bag sample gas mass flow meter (4), and the dilution gas mass flow meter (5) is connected between the gas bag sample gas mass flow meter (4) and the output ports (3) through a three-way pipe.

2. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 1, characterized in that: A back plate (6) is provided on another side of the injector body (1). The bottom of the back plate (6) is hinged to the surface of the injector body (1) by a hinge (7). A connection structure is provided between the top of the back plate (6) and the injector body (1).

3. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 2, characterized in that: The connection structure includes a first magnet (8), a second magnet (9), and a protective shell (10). The protective shell (10) is fixedly installed on the surface of the back plate (6). The first magnet (8) is fixedly installed on the surface of the injector body (1). The second magnet (9) is fixedly installed inside the protective shell (10). The first magnet (8) and the second magnet (9) have opposite polarities and attract each other.

4. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 3, characterized in that: A separation structure is provided between the first magnet (8) and the second magnet (9). The separation structure includes a cavity (11), a guide rod (12) and a push plate (13). The push plate (13) is horizontally slidably connected to the surface of the protective shell (10) through an elastic structure. The guide rod (12) is fixedly connected to the surface of the push plate (13). The cavities (11) are respectively provided on the surfaces of the first magnet (8) and the second magnet (9). A conical channel is formed between the two cavities (11). One end of the guide rod (12) is slidably connected to the conical channel.

5. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 4, characterized in that: The elastic structure includes a drive rod (14), a spring (15), a limiting plate (16), and a receiving cavity (17). One end of the drive rod (14) is fixedly connected to the surface of the push plate (13). The receiving cavity (17) is disposed inside the protective shell (10). The limiting plate (16) is concentrically fixedly connected to the other end of the drive rod (14). The drive rod (14) is slidably connected to the inside of the protective shell (10). The limiting plate (16) is slidably connected to the inside of the receiving cavity (17). The spring (15) is fixedly connected between the receiving cavity (17) and the limiting plate (16). The diameter of the limiting plate (16) is larger than the diameter of the drive rod (14).

6. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 4, characterized in that: A synchronous drive structure is provided between the two push plates (13) and the protective shell (10). The synchronous drive structure includes a gear (18), a rotating shaft (19), a rack (20), and a knob (21). The knob (21) is concentrically fixed to one end of the rotating shaft (19), and the other end of the rotating shaft (19) is rotatably connected to the surface of the protective shell (10). The gear (18) is keyed to the surface of the rotating shaft (19). The two racks (20) are respectively fixedly connected to the surface of the push plates (13). Both racks (20) mesh with the gear (18), and the two racks (20) are symmetrical about the center of the rotating shaft (19).

7. The multi-channel gas bag automatic sampling system with automatic dilution function according to claim 6, characterized in that: The protective shell (10) is fixedly mounted with a T-shaped track (22), and the rack (20) is provided with a T-shaped groove (23) that matches the T-shaped track (22). The rack (20) is slidably connected to the surface of the T-shaped track (22) through the T-shaped groove (23).

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