Sample inlet sealing mechanism of gas chromatograph-mass spectrometer

Abstract

The utility model relates to the technical field of gas chromatograph-mass spectrometers, and discloses a sample inlet sealing mechanism of a gas chromatograph-mass spectrometer, which comprises an equipment main body part, a connecting mechanism is arranged on the side of the equipment main body part, and a sealing closing mechanism is arranged, so that when a gas cylinder is mounted, the gas cylinder can be sealed by the connecting mechanism. When the gas cylinder is installed and in the installation process, the sliding sleeve abuts against the first rolling ball, so that the first rolling ball is driven to move leftwards, meanwhile, the sliding pipe drives the second rolling ball to move rightwards, and therefore sealing of the connecting pipe is completed. The first rolling ball and the second rolling ball are separated from the first connecting sleeve and the second connecting sleeve correspondingly, so that gas in the gas cylinder smoothly enters the pipeline, then a rotating plate is rotated, the rotating plate drives a sealing plate to move, the sealing plate is opened, and the gas can smoothly enter the device; therefore, air is further prevented from entering the device, and the overall sealing performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatography-mass spectrometry, in particular to an injection port sealing mechanism of a gas chromatography-mass spectrometry. Background Art

[0002] The main function of the gas chromatography-mass spectrometry inlet sealing structure is to ensure the sealing and accuracy of the injection process. First of all, the sealing structure can prevent external air or impurities from entering the injection port, thereby ensuring the stability of the injection process and the accuracy of the results. At the same time, the sealing structure can also prevent the leakage of internal gas or substances to avoid affecting the surrounding environment and the instrument itself.

[0003] According to the description of a gas chromatograph-mass spectrometer injection port sealing mechanism disclosed on the patent website (authorization announcement is CN217899075 U), "a gas chromatograph-mass spectrometer injection port sealing mechanism includes an equipment body, a connecting component is arranged on the right side of the equipment body, a universal component is arranged on the side of the connecting component, an injection tube is arranged on the side of the universal component, a sealing component is arranged on the outer side of the injection tube and the universal component, and a fixing component is arranged on the outer side of the sealing component and the injection tube."

[0004] In view of the above description, the applicant believes that there are the following problems:

[0005] During use of the utility model, the device is screwed into the fixing hole through the mounting tube, which makes it easy to replace the fixing tubes of different diameters, and then the sealing device is sleeved with the inner groove, outside the gap between the sampling tube and the mounting tube, so as to further seal the connection between the sampling tube and the mounting tube. However, in actual use, when the device is not connected, the general component is not provided with a sealing device, which may cause air to enter the inside of the fixing tube, and after installation, due to the lack of sealing components inside the pipeline, it is easy to cause the gas to mix with the outside air. Therefore, it is necessary to improve the sealing mechanism of the injection port of a gas chromatograph-mass spectrometer. Utility Model Content

[0006] The utility model aims to provide a sealing mechanism for an injection port of a gas chromatograph-mass spectrometer to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a sealing mechanism for an injection port of a gas chromatograph-mass spectrometer, comprising a device main body component, a connecting mechanism is arranged on the side of the device main body component, and a sealing closing mechanism is arranged on the right side of the connecting mechanism;

[0008] The sealing and closing mechanism includes a sealing component and a closing component. The closing component is arranged on the left side of the sealing component to ensure that the inside of the connecting pipe is isolated from the outside air.

[0009] Preferably, the connecting mechanism includes a fixing seat, which is installed on the right side of the main body of the equipment, and the fixing seat is threaded with bolts inside. A sealing seat is installed inside the fixing seat, a No. 1 sealing ring is installed on the right side of the sealing seat, and a No. 2 sealing ring is installed on the left side of the sealing seat, so as to improve the sealing between the fixing seat and the main body of the equipment.

[0010] Preferably, grooves are provided at corresponding positions of the fixing seat and the sealing seat, and the sealing seat is installed in the groove to improve the sealing performance.

[0011] Preferably, the closing component includes a fixed sleeve, which is fixedly connected to the right side of the fixed seat, to which the right side of the fixed sleeve is fixedly connected to an air intake plate, to which the right side of the air intake plate is rotatably connected to a rotating plate, to which the left side of the rotating plate is slidably connected to a sealing plate, and to which the right side of the sealing plate is fixedly connected to a slider, so as to facilitate further closing of the connecting pipe.

[0012] Preferably, a groove is provided at a position corresponding to the sliding block and the air intake plate, and the sliding block is slidably connected in the groove, so as to facilitate the control of the movement of the sealing plate.

[0013] Preferably, the sealing assembly includes a connecting tube, the connecting tube is slidably connected to the right side of the rotating plate, a No. 1 fixing block is fixedly connected inside the connecting tube, a No. 1 spring is fixedly connected to the right side of the No. 1 fixing block, a No. 1 rolling ball is fixedly connected to the right side of the No. 1 spring, a No. 1 connecting sleeve is fixedly connected inside the connecting tube, a sleeve tube is threadedly connected to the outside of the connecting tube, a No. 2 spring is fixedly connected inside the sleeve tube, a No. 2 rolling ball is fixedly connected to the left side of the No. 2 spring, a No. 2 connecting sleeve is fixedly connected inside the sleeve tube, a sliding tube is movably connected inside the No. 2 connecting sleeve, and a gas cylinder is fixedly connected to the right side of the sleeve tube, so as to isolate the outside air from the inside of the device.

[0014] Preferably, holes are provided at positions corresponding to the No. 1 connecting sleeve and the sliding tube, and the sliding tube is movably connected in the hole, so as to facilitate the installation of the gas inlet bottle.

[0015] Compared with the prior art, the utility model provides a sealing mechanism for the injection port of a gas chromatography-mass spectrometer, which has the following beneficial effects:

[0016] 1. The sealing mechanism of the injection port of the gas chromatograph-mass spectrometer is provided with a sealing closing mechanism. When the gas cylinder is installed, the No. 1 ball is abutted against the No. 1 connecting sleeve, thereby completing the sealing of the connecting pipe. When the gas cylinder is installed, and during the installation process, the sliding sleeve abuts against the No. 1 ball, thereby driving the No. 1 ball to move to the left, and at the same time, the sliding tube drives the No. 2 ball to move to the right, thereby making the No. 1 ball and the No. 2 ball separate from the No. 1 connecting sleeve and the No. 2 connecting sleeve respectively, so that the gas in the gas cylinder can smoothly enter the interior of the pipeline, and then by rotating the rotating plate, the rotating plate drives the sealing plate to move, so that the sealing plate is opened, so that the gas can smoothly enter the interior of the device, thereby further preventing air from entering the interior of the device and improving the overall sealing of the device.

[0017] 2. The injection port sealing mechanism of the gas chromatograph-mass spectrometer is connected to the main body of the equipment by bolts through a connecting mechanism, and then the sealing seat arranged inside compresses the No. 1 sealing ring and the No. 2 sealing ring during the connection process, so that the connection between the fixing seat and the main body of the equipment is completely sealed, thereby completely sealing the connection part to ensure that air does not enter the interior of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 It is a structural schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a front cross-sectional view of the sealing and closing mechanism of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the unfolded structure of the sealing component of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the unfolded structure of the closing component of the utility model;

[0023] Figure 5 It is a structural schematic diagram of the unfolded structure of the connecting mechanism of the utility model.

[0024] In the figure: 1. Main parts of the equipment; 2. Sealing and closing mechanism; 3. Connecting mechanism; 21. Sealing assembly; 22. Closing assembly; 211. Connecting pipe; 212. Fixed block No. 1; 213. Spring No. 1; 214. Ball No. 1; 215. Connecting sleeve No. 1; 216. Sleeve pipe; 217. Spring No. 2; 218. Ball No. 2; 219. Sliding pipe; 2110. Gas cylinder; 2111. Connecting sleeve No. 2; 221. Fixed sleeve; 222. Inlet plate; 223. Rotating plate; 224. Sealing plate; 225. Sliding block; 31. Fixed seat; 32. Bolt; 33. Sealing seat; 34. Sealing ring No. 1; 35. Sealing ring No. 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] See also Figure 1-5 The utility model provides a technical solution: a gas chromatography-mass spectrometry inlet sealing mechanism, comprising a device main body component 1, a connecting mechanism 3 is arranged on the side of the device main body component 1, and a sealing closing mechanism 2 is arranged on the right side of the connecting mechanism 3;

[0029] The sealing and closing mechanism 2 includes a sealing component 21 and a closing component 22. The closing component 22 is arranged on the left side of the sealing component 21 to ensure that the inside of the connecting pipe 211 is isolated from the outside air.

[0030] Furthermore, the closing component 22 includes a fixed sleeve 221, which is fixedly connected to the right side of the fixed seat 31, to which an air intake plate 222 is fixedly connected on the right side of the fixed sleeve 221, to which a rotating plate 223 is rotatably connected on the right side of the air intake plate 222, to which a sealing plate 224 is slidably connected on the left side of the rotating plate 223, to which a slider 225 is fixedly connected on the right side of the sealing plate 224, so as to further close the connecting pipe 211.

[0031] Furthermore, a groove is provided at a position corresponding to the slider 225 and the air inlet plate 222 , and the slider 225 is slidably connected in the groove, so as to facilitate the control of the movement of the sealing plate 224 .

[0032] Furthermore, the sealing assembly 21 includes a connecting tube 211, which is slidably connected to the right side of the rotating plate 223, a No. 1 fixing block 212 is fixedly connected inside the connecting tube 211, a No. 1 spring 213 is fixedly connected to the right side of the No. 1 fixing block 212, a No. 1 rolling ball 214 is fixedly connected to the right side of the No. 1 spring 213, a No. 1 connecting sleeve 215 is fixedly connected inside the connecting tube 211, a sleeve tube 216 is threadedly connected to the outside of the connecting tube 211, a No. 2 spring 217 is fixedly connected inside the sleeve tube 216, a No. 2 rolling ball 218 is fixedly connected to the left side of the No. 2 spring 217, a No. 2 connecting sleeve 2111 is fixedly connected inside the sleeve tube 216, a sliding tube 219 is movably connected inside the No. 2 connecting sleeve 2111, and a gas cylinder 2110 is fixedly connected to the right side of the sleeve tube 216, so as to isolate the outside air from the inside of the device.

[0033] Furthermore, holes are provided at positions corresponding to the No. 1 connecting sleeve 215 and the sliding tube 219, and the sliding tube 219 is movably connected in the hole, so as to facilitate the installation of the gas inlet bottle 2110.

[0034] Embodiment 2:

[0035] See also Figure 5 , and combined with Example 1, it is further obtained that the connecting mechanism 3 includes a fixing seat 31, the fixing seat 31 is installed on the right side of the equipment main body component 1, the fixing seat 31 is internally threaded with a bolt 32, a sealing seat 33 is installed inside the fixing seat 31, a No. 1 sealing ring 34 is installed on the right side of the sealing seat 33, and a No. 2 sealing ring 35 is installed on the left side of the sealing seat 33, so as to improve the sealing between the fixing seat 31 and the equipment main body component 1.

[0036] Furthermore, grooves are provided at corresponding positions of the fixing seat 31 and the sealing seat 33, and the sealing seat 33 is installed in the grooves, so as to improve the sealing performance.

[0037] In actual operation, when the device is used, first, the fixing seat 31 is fixedly connected to the main body part 1 of the device through the provided connection mechanism 3 and the bolts 32, and then the sealing seat 33 provided inside compresses the No. 1 sealing ring 34 and the No. 2 sealing ring 35 during the connection process, so that the connection between the fixing seat 31 and the main body part 1 of the device is completely sealed, thereby completely sealing the connection part to ensure that air does not enter the interior of the device, and then through the provided sealing closure mechanism 2, when the gas cylinder 2110 is installed, the No. 1 spring 213 drives the No. 1 rolling ball 214 to move, so that the No. 1 rolling ball 214 abuts against the No. 1 connecting sleeve 215, thereby completing the connection of the connecting pipe 211. Sealing, when installing the gas cylinder 2110, and during the installation process, the sliding tube 219 abuts against the No. 1 ball 214, thereby driving the No. 1 ball 214 to move to the left, and at the same time the sliding tube 219 drives the No. 2 ball 218 to move to the right, so that the No. 1 ball 214 and the No. 2 ball 218 are respectively separated from the No. 1 connecting sleeve 215 and the No. 2 connecting sleeve 2111, so that the gas in the gas cylinder 2110 can smoothly enter the interior of the pipeline, and then by rotating the rotating plate 223, the rotating plate 223 drives the sealing plate 224 to move, so that the sealing plate 224 is opened, so that the gas can smoothly enter the interior of the device, thereby further preventing air from entering the interior of the device and improving the overall sealing of the device.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A gas chromatography-mass spectrometry inlet sealing mechanism, comprising a device main body component (1), characterized in that: The main body component (1) of the device is provided with a connecting mechanism (3) on one side, and a sealing closing mechanism (2) is provided on the right side of the connecting mechanism (3); The sealing and closing mechanism (2) comprises a sealing component (21) and a closing component (22); the closing component (22) is arranged on the left side of the sealing component (21); The connecting mechanism (3) comprises a fixing seat (31), the fixing seat (31) is installed on the right side of the main body component (1) of the equipment, a bolt (32) is threadedly connected inside the fixing seat (31), a sealing seat (33) is installed inside the fixing seat (31), a first sealing ring (34) is installed on the right side of the sealing seat (33), and a second sealing ring (35) is installed on the left side of the sealing seat (33); The closing component (22) comprises a fixing sleeve (221), the fixing sleeve (221) being fixedly connected to the right side of the fixing seat (31), an air intake plate (222) being fixedly connected to the right side of the fixing sleeve (221), a rotating plate (223) being rotatably connected to the right side of the air intake plate (222), a sealing plate (224) being slidably connected to the left side of the rotating plate (223), and a sliding block (225) being fixedly connected to the right side of the sealing plate (224).

2. The gas chromatography-mass spectrometry inlet sealing mechanism according to claim 1, characterized in that: The fixing seat (31) and the sealing seat (33) are provided with grooves at corresponding positions, and the sealing seat (33) is installed in the grooves.

3. The injection port sealing mechanism of a gas chromatography-mass spectrometer according to claim 1, characterized in that: A groove is provided at a position corresponding to the sliding block (225) and the air inlet plate (222), and the sliding block (225) is slidably connected in the groove.

4. The gas chromatography-mass spectrometry inlet sealing mechanism according to claim 1, characterized in that: The sealing assembly (21) comprises a connecting pipe (211), the connecting pipe (211) is slidably connected to the right side of the rotating plate (223), a No. 1 fixing block (212) is fixedly connected inside the connecting pipe (211), a No. 1 spring (213) is fixedly connected to the right side of the No. 1 fixing block (212), a No. 1 rolling ball (214) is fixedly connected to the right side of the No. 1 spring (213), a No. 1 connecting sleeve (215) is fixedly connected inside the connecting pipe (211), and the No. 1 connecting sleeve (215) is fixedly connected to the connecting pipe (211). The connecting tube (211) is externally threadedly connected to a sleeve tube (216), a No. 2 spring (217) is fixedly connected inside the sleeve tube (216), a No. 2 rolling ball (218) is fixedly connected to the left side of the No. 2 spring (217), a No. 2 connecting sleeve (2111) is fixedly connected inside the sleeve tube (216), a sliding tube (219) is movably connected inside the No. 2 connecting sleeve (2111), and a gas cylinder (2110) is fixedly connected to the right side of the sleeve tube (216).

5. The injection port sealing mechanism of a gas chromatography-mass spectrometer according to claim 4, characterized in that: The first connecting sleeve (215) and the sliding tube (219) are provided with holes at positions corresponding to each other, and the sliding tube (219) is movably connected in the holes.

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