Program temperature rise sampling device

Abstract

The utility model discloses a temperature programming sampling device, which relates to the technical field of temperature programming sampling devices and comprises a sampling device body, a gas chromatograph interface, a liner tube and a carrier gas inlet, the bottom of the sampling device body is connected with the gas chromatograph interface, the liner tube is positioned in the sampling device body, and the carrier gas inlet is communicated with the gas chromatograph interface. The carrier gas inlet is communicated with the top of the sampling device body, a movable communication assembly is arranged at the top of the carrier gas inlet, and a conveying and discharging assembly is arranged at the top of the sampling device body. The mobile communication component is matched with the conveying and discharging component to conveniently convey a solid sample into the liner tube, so that the problems that the sample cannot be directly moved into the liner tube by the existing sample injection device, the sample needs to be transferred into the sample injection liner tube through a special spoon, the sample needs to be relatively fine during movement, inconvenience in use is caused, and the sample injection efficiency is low are solved. The use convenience of the sampling device is reduced, and the effect of pushing and moving in is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature-raising sample injection devices, in particular to a programmed temperature-raising sample injection device. Background Art

[0002] Programmed temperature chromatography refers to the method in which the temperature of the chromatographic column is continuously increased linearly or nonlinearly over time according to the program set by the boiling range of the components, so that the column temperature corresponds to the boiling point of the components, so that both low-boiling point components and high-boiling point components are appropriately retained in the chromatographic column, the chromatographic peaks are evenly distributed and the peak shapes are symmetrical. The retention value of each component can be expressed by the corresponding temperature at the highest point of the chromatographic peak, that is, the retention temperature.

[0003] The programmed temperature vaporization (PTV) inlet of the 8890 and 7890B GC systems provides a variety of GC injection methods. This inlet combines the advantages of split, splitless, cool on-column and sample concentration (solvent elimination) modes. The PTV inlet supports hot and cold injections as well as large volume injections.

[0004] For example, the temperature-programmed vaporization solid sampling device, published as CN2655239Y, utilizes a simple, compact, and highly adaptable device for direct solid sampling. This device controls the sample volume by adjusting the device's temperature program and split ratio. Furthermore, the device utilizes a disposable liner to prevent contamination of the inlet. Its simplicity, compact size, ease of operation, and high adaptability allow it to be used with existing instruments. Its compact size allows for easy connection to portable gas chromatographs for rapid on-site testing.

[0005] Based on the search of patent numbers and combined with the findings of deficiencies in the prior art;

[0006] The existing injection device cannot directly inject the sample into the liner, and needs to use a specific injection needle to inject the sample into the injection liner. It needs to be more delicate when moving, which causes inconvenience in use and reduces the convenience of using the injection device. Utility Model Content

[0007] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a programmed temperature injection device, which has the advantage of push-in, and solves the problem that the existing injection device cannot directly inject the sample into the liner, and needs to use a specific injection needle to inject the sample into the injection liner. It needs to be more precise when moving, which causes inconvenience in use and reduces the convenience of using the injection device.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a programmed temperature injection device, comprising an injection device body, a gas chromatograph interface, a liner and a carrier gas inlet, the bottom of the injection device body being connected to the gas chromatograph interface, the liner being located in the injection device body, the carrier gas inlet being connected to the top of the injection device body, a movable connecting component being provided at the top of the carrier gas inlet, and a conveying and unloading component being provided at the top of the injection device body.

[0009] As a preferred embodiment of the present invention, the movable connecting component includes a connecting pipe, the bottom of the connecting pipe is sleeved on the top of the carrier gas inlet, the interior of the connecting pipe is movably connected to a movable ring, the interior of the movable ring is fixedly connected to a movable pipe, the top of the movable pipe is connected to a movable bucket, a movable groove is opened on the right side of the connecting pipe, and a movable block is fixedly connected to one side of the movable ring.

[0010] As a preferred embodiment of the present invention, the conveying and unloading assembly includes a movable ring, the bottom of the movable ring is fixedly connected to the top of the movable bucket, the surface of the movable ring is threadedly connected to a mounting ring, the top of the mounting ring is connected to a first one-way valve, the top of the first one-way valve is connected to a pressing ball, and one side of the pressing ball is connected to a second one-way valve.

[0011] As a preferred embodiment of the present invention, a rotating block is fixedly connected to the outer side of the mounting ring, and a plurality of rotating blocks are provided, and the plurality of rotating blocks are arranged at equal distances.

[0012] As a preferred embodiment of the present invention, an observation groove is provided on the other side of the connecting pipe, and a transparent plate is fixedly connected to the interior of the observation groove.

[0013] As a preferred embodiment of the present invention, transparent glass is installed on the side of the movable tube close to the transparent plate, and a sealing ring is fixedly connected to the bottom of the movable ring.

[0014] As a preferred embodiment of the present invention, a limiting block is fixedly connected to the outer side of the movable ring, a limiting groove is provided on the outer side of the inner wall of the connecting tube, and the surface of the limiting block is movably connected to the inside of the limiting groove.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The utility model conveniently injects the sample into the liner by setting a mobile connecting component in conjunction with the conveying and unloading component, thereby solving the problem that the existing sampling device cannot directly inject the sample into the liner, and needs to use a specific injection needle to inject the sample into the sampling liner, which requires more precision when moving, causing inconvenience in use and reducing the convenience of using the sampling device, thereby achieving the effect of pushing and moving.

[0017] 2. The utility model sets a movable connecting component. The connecting tube can limit the surface of the movable ring during use, so that the movable ring can stably drive the surface of the movable tube to limit the movable position, which is convenient for the user to move the movable tube. During use, the user can place the sample into the movable bucket. After the sample enters the movable bucket, it can enter the interior of the movable tube. At this time, the user can move the moving block to drive the moving ring to move under the limit of the moving groove. The movement of the moving ring can drive the moving tube to move, which is convenient for the moving tube to move down to the top of the liner, and convenient for transporting the sample holder to the interior of the liner.

[0018] 3. The utility model is provided with a conveying and unloading component. During use, the surface thread of the mounting ring and the movable ring can be engaged, so that the movable ring can drive the first one-way valve, the pressing ball and the second one-way valve to be connected and fixed. During use, the user can press the pressing ball to allow the air in the pressing ball to enter the interior of the movable ring through the first one-way valve. The increased air pressure in the mounting ring will pass downward through the movable ring and the movable bucket into the interior of the movable tube, pushing the sample in the movable tube. At the same time, when the user releases the pressing ball, the outside air will enter the pressing ball through the second one-way valve under the action of atmospheric pressure, so that the user can continue to press to increase the air pressure to move the sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional split structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] In the figure: 1. Injection device body; 2. Gas chromatograph interface; 3. Liner; 4. Moving connecting component; 41. Connecting pipe; 42. Moving ring; 43. Moving pipe; 44. Movable bucket; 45. Moving groove; 46. Moving block; 5. Conveying and unloading component; 51. Movable ring; 52. Mounting ring; 53. First one-way valve; 54. Pressing ball; 55. Second one-way valve; 6. Rotating block; 7. Observation groove; 8. Transparent plate; 9. Transparent glass; 10. Sealing ring; 11. Limit block; 12. Limit groove; 13. Carrier gas inlet. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figures 1 to 3 As shown, the utility model provides a programmed temperature injection device, which includes an injection device body 1, a gas chromatograph interface 2, a liner 3 and a carrier gas inlet 13. The bottom of the injection device body 1 is connected to the gas chromatograph interface 2, the liner 3 is located in the injection device body 1, and the carrier gas inlet 13 is connected to the top of the injection device body 1. A movable connecting component 4 is provided on the top of the carrier gas inlet 13, and a conveying and unloading component 5 is provided on the top of the injection device body 1.

[0025] refer to Figure 3 The mobile connecting component 4 includes a connecting pipe 41, the bottom of the connecting pipe 41 is sleeved on the top of the carrier gas inlet 13, the interior of the connecting pipe 41 is movably connected to a mobile ring 42, the interior of the mobile ring 42 is fixedly connected to a mobile pipe 43, the top of the mobile pipe 43 is connected to a movable bucket 44, a mobile groove 45 is opened on the right side of the connecting pipe 41, and a mobile block 46 is fixedly connected to one side of the mobile ring 42.

[0026] As a technical optimization solution of the present invention, by setting a movable connecting component 4, the connecting tube 41 can limit the surface movement of the movable ring 42 during use, so that the movable ring 42 can stably drive the surface movement of the movable tube 43 to limit the position, which is convenient for the user to move the movable tube 43. During use, the user can place the sample into the movable bucket 44. After the sample enters the movable bucket 44, it can enter the interior of the movable tube 43. At this time, the user can move the movable block 46 so that the movable block 46 drives the movable ring 42 to move under the limit of the movable groove 45. The movement of the movable ring 42 can drive the movable tube 43 to move, which is convenient for the movable tube 43 to move down to the top of the liner 3, and convenient for transporting the sample holder to the interior of the liner 3.

[0027] refer to Figure 2 The conveying and unloading component 5 includes a movable ring 51, the bottom of the movable ring 51 is fixedly connected to the top of the movable bucket 44, the surface of the movable ring 51 is threadedly connected to the mounting ring 52, the top of the mounting ring 52 is connected to a first one-way valve 53, the top of the first one-way valve 53 is connected to a pressing ball 54, and one side of the pressing ball 54 is connected to a second one-way valve 55.

[0028] As a technical optimization solution of the present invention, by setting up a conveying and unloading component 5, during use, the surface thread engagement of the mounting ring 52 and the movable ring 51 can be achieved, so that the movable ring 42 can drive the first one-way valve 53, the pressing ball 54 and the second one-way valve 55 to be connected and fixed. During use, the user can press the pressing ball 54 to allow the air in the pressing ball 54 to enter the interior of the movable ring 42 through the first one-way valve 53. The increased air pressure in the mounting ring 52 will pass downward through the movable ring 51 and the movable bucket 44 into the interior of the movable tube 43, pushing the sample in the movable tube 43. At the same time, when the user releases the pressing ball 54, the outside air will enter the pressing ball 54 through the second one-way valve 55 under the action of atmospheric pressure, so that the user can continue to press to increase the air pressure to push the sample to move.

[0029] refer to Figure 2 The outer side of the mounting ring 52 is fixedly connected with a rotating block 6. There are several rotating blocks 6, and the rotating blocks 6 are arranged at equal distances.

[0030] As a technical optimization solution of the present invention, by setting a rotating block 6, the rotating block 6 can facilitate the user to rotate the mounting ring 52, thereby enhancing the convenience of the rotation installation of the mounting ring 52 and avoiding the situation where the mounting ring 52 is inconvenient to be threadedly installed with the movable ring 51 during use.

[0031] refer to Figure 2 An observation slot 7 is provided on the other side of the connecting pipe 41 , and a transparent plate 8 is fixedly connected to the interior of the observation slot 7 .

[0032] As a technical optimization solution of the present invention, by setting up the observation slot 7 and the transparent plate 8, the observation slot 7 can facilitate the user to observe the interior of the connecting tube 41 during use. At the same time, the transparent plate 8 can protect the interior of the observation slot 7, thereby enhancing the safety of use of the observation slot 7.

[0033] refer to Figure 2 A transparent glass 9 is installed on the side of the moving tube 43 close to the transparent plate 8, and a sealing ring 10 is fixedly connected to the bottom of the moving ring 42.

[0034] As a technical optimization solution of the present invention, by setting transparent glass 9 and sealing ring 10, the transparent glass 9 can facilitate the user to observe the movement of the sample in the moving tube 43, and facilitate the user to quickly move the sample into the liner 3. The sealing ring 10 can seal the bottom of the moving ring 42 during use, thereby enhancing the sealing effect of the moving ring 42 during use.

[0035] refer to Figure 3 The outer side of the movable ring 42 is fixedly connected to the limiting block 11, and the outer side of the inner wall of the connecting tube 41 is provided with a limiting groove 12, and the surface of the limiting block 11 is movably connected to the inner part of the limiting groove 12.

[0036] As a technical optimization solution of the present invention, by setting a limit block 11 and a limit groove 12, the limit groove 12 can limit the outer side of the limit block 11 during use. After the limit block 11 is limited, it can drive the outer side of the movable limit of the moving ring 42, thereby enhancing the moving stability of the moving ring 42 and avoiding the tilting and dislocation of the moving ring 42 during movement.

[0037] The working principle and use process of the present invention are as follows: when in use, the connecting tube 41 can limit the surface of the movable ring 42, so that the movable ring 42 can stably drive the surface of the movable tube 43 to limit the movement, which is convenient for the user to move the movable tube 43. During use, the user can place the sample into the interior of the movable bucket 44. After the sample enters the movable bucket 44, it can enter the interior of the movable tube 43. At this time, the user can move the movable block 46 so that the movable block 46 drives the movable ring 42 to move under the limit of the movable groove 45. The movement of the movable ring 42 can drive the movable tube 43 to move, which is convenient for the movable tube 43 to move down to the top of the liner 3, so that the sample holder can be transported to the interior of the liner 3. At the same time, in use, the user can install the ring 5 2 is threadedly engaged with the surface of the movable ring 51, so that the movable ring 42 drives the first one-way valve 53, the pressing ball 54 and the second one-way valve 55 to be connected and fixed. During use, the user can press the pressing ball 54 to allow the air in the pressing ball 54 to enter the interior of the movable ring 42 through the first one-way valve 53. The increased air pressure in the mounting ring 52 will pass downward through the movable ring 51 and the movable bucket 44 into the interior of the movable tube 43, pushing the sample in the movable tube 43. At the same time, when the user releases the pressing ball 54, the outside air will enter the pressing ball 54 through the second one-way valve 55 under the action of atmospheric pressure, so that the user can continue to press to increase the air pressure to push the sample to move, thereby achieving the effect of pushing the sample into the liner tube 3 and enhancing the convenience of use of the sample injection device.

[0038] To sum up: this programmed temperature injection device, by setting a mobile connecting component and cooperating with the conveying and unloading component 5, conveniently injects the sample into the liner 3, solves the problem that the existing injection device cannot directly move the sample into the liner, and needs to use a specific injection needle to inject the sample into the injection liner, which requires more precision when moving, causing inconvenience in use and reducing the convenience of using the injection device.

[0039] 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A programmed temperature injection device, comprising an injection device body (1), a gas chromatograph interface (2), a liner (3) and a carrier gas inlet (13), characterized in that: The bottom of the sampling device body (1) is connected to the gas chromatograph interface (2), the liner (3) is located in the sampling device body (1), the carrier gas inlet (13) is connected to the top of the sampling device body (1), the top of the carrier gas inlet (13) is provided with a movable communication component (4), and the top of the sampling device body (1) is provided with a conveying and unloading component (5).

2. A programmed temperature injection device according to claim 1, characterized in that: The movable connecting component (4) comprises a connecting pipe (41), the bottom of the connecting pipe (41) is sleeved on the top of the carrier gas inlet (13), the interior of the connecting pipe (41) is movably connected to a movable ring (42), the interior of the movable ring (42) is fixedly connected to a movable pipe (43), the top of the movable pipe (43) is connected to a movable bucket (44), a movable groove (45) is provided on the right side of the connecting pipe (41), and a movable block (46) is fixedly connected to one side of the movable ring (42).

3. A programmed temperature injection device according to claim 2, characterized in that: The conveying and unloading assembly (5) includes a movable ring (51), the bottom of the movable ring (51) is fixedly connected to the top of the movable bucket (44), the surface of the movable ring (51) is threadedly connected to a mounting ring (52), the top of the mounting ring (52) is connected to a first one-way valve (53), the top of the first one-way valve (53) is connected to a pressing ball (54), and one side of the pressing ball (54) is connected to a second one-way valve (55).

4. A programmed temperature injection device according to claim 3, characterized in that: A rotating block (6) is fixedly connected to the outer side of the mounting ring (52), and a plurality of rotating blocks (6) are provided, and the plurality of rotating blocks (6) are arranged at equal distances.

5. The programmed temperature injection device according to claim 2, characterized in that: An observation slot (7) is provided on the other side of the connecting pipe (41), and a transparent plate (8) is fixedly connected to the interior of the observation slot (7).

6. The programmed temperature injection device according to claim 2, characterized in that: A transparent glass (9) is installed on one side of the moving tube (43) close to the transparent plate (8), and a sealing ring (10) is fixedly connected to the bottom of the moving ring (42).

7. The programmed temperature injection device according to claim 2, characterized in that: The outer side of the movable ring (42) is fixedly connected to a limiting block (11), the outer side of the inner wall of the connecting pipe (41) is provided with a limiting groove (12), and the surface of the limiting block (11) is movably connected to the inside of the limiting groove (12).

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